Towing trolley for mining drawknife

FIELD: mining.

SUBSTANCE: invention refers to mining industry, and namely to towing trolley for underground mining drawknife. Towing trolley for underground mining drawknife includes a towing trolley body inserted in the drawknife body cavity, which is provided on rear side of the cavity guide with a connection element to fix the drawknife chain, and on front side of the cavity guide - with front part, the ends of which indicate the movement direction and form thrust surfaces to interact with counter-thrust surfaces in the drawknife body cavity; at that, a damping device is integrated into the front part of towing trolley and acts with damping in both movement directions. Connection element is movable relative to thrust surfaces with overcoming of back force of damping system of damping device, which is located between thrust surfaces. The provision is made for a receiving body that is rigidly connected to the connection element to receive the damping system. Thrust surfaces form ends of movable bushing, in inner space of which the receiving body is located in movable manner; at that, inner sides of thrust surfaces preferably form thrusts for relative movement between movable bushing and receiving body.

EFFECT: increasing the device efficiency.

16 cl, 12 dwg

 

The invention relates to a traction truck for underground mining of a plane containing the insert in the recess of the body of the plow body traction truck, which is on the rear side of the guide grooves has a connecting element for mounting the plow chain and on the front side of the guide grooves front side pointing in the direction of movement of the ends of which form a hard surface for interaction with anthroponymy surfaces in the recess of the body of the plane, with the front of the traction truck integrated with current damping in both directions of movement of the damping device. This invention relates to a supplementary application to the German patent application DE 10 2006 027955, the full content of which is included in this description.

In an unpublished main application DE 10 2006 027955 damping device comprises protruding on both sides for the hard surface on the front part of the rod, the length of which is larger than the distance of the thrust surfaces from each other, and the rod has a fixed focus for package Belleville springs, which creates a return force, which should prevent the penetration of the end of the rod fully into the front part. Due to the applied packages Belleville springs should be created using the rearward end of the end of the rod for uparrowovername damping, which must withstand, for example, forces up to 500 kN (kilonewton) in each direction, before the entire lower end of the rod in the front. Only after this damping device loses its damping action.

Other mining plane containing inserted into the notch on the body of the plow body traction truck, known from DE 4300534 A1. When the execution of the traction trolley set relatively freely in the recess, thereby pulling the cart and plow can be arranged independently from each other with the progress direction of the plane, but without causing damping.

The objective of the invention is to provide a traction truck production plane, which is equipped with a damping device which is simple in maintenance (maintenance) and provides a favorable transmission of force between the thrust surface on the traction trolley and centropomus surface mine plow.

This task is solved according to the invention in that the connecting element is movable relative to the thrust surfaces of overcoming the return force located between the thrust surfaces of the damping system damping device. In the solution according to the invention, in contrast to the basic patent, supported by full contact over a large surface between the thrust surfaces is, on the one hand, and anthroponymy surfaces on telestroke, on the other hand, since there is no protruding for the hard surface parts of the damping device. Instead, according to the invention, the damping system lies completely between the thrust surfaces, and a damping system dampens relative movement between spaced at a constant distance from each other hard surfaces, on the one hand, and the connecting element, on the other hand.

In a preferred embodiment, the provided still connected to the connecting element receiving body for receiving the damping system. Hard surfaces can preferably form the ends of the movable sleeve in the inner space of which is the receiving body for the damping system. Thus the inner side of the thrust surfaces may form end stops movement, which limit the maximum path shift of the connecting element relative to the end stops and thereby relatively contrmpory surfaces and, respectively, the notches in the body of the plane. The receiving body can simultaneously perform the function of the guide between the receiver body and the movable sleeve and may be provided with guide means. By performing the anterior part of the escolca parts and locations of both hard surfaces with remaining a constant distance between them on the sliding sleeve can provide significantly more a long way damping, than the solution in accordance with the main patent.

In a particularly preferred embodiment, the damping system has for each direction of movement of the damping plunger, while the shank of the plunger protrudes from the receiving body and is installed with the possibility of bias against the action of a return force, at least one damping element relative to the other of the damping plunger. Each of the damping plunger may preferably be located in the receiving body of the plate, on the front side of which is formed by the shank of the plunger and the rear side of which rests against and, respectively, which adjoins the damping element or damping elements. Thus, damping is achieved by reducing the distance the inner side lying at the front in the direction of the thrust surface of the corresponding end side of the receiving body, the change in the distance between the receiver body and hard surfaces creates a resetting force which is accumulated in the damping elements and with further decrease of the distance may be increased, for example, with 100 kN in the initial state up to approximately 500 kN in end position relative offset.

In order, despite the relative shift between the receiver body and a movable sleeve, POPs avati as possible parallel to the axis of the return force, between the plates, in particular, in the center of the damping elements can be located centering finger, in particular, telescopic centering finger. Due to this, the receiving body can be made particularly simple manner that the receiving body is preferably welded to the connecting element flange plate, which is welded to the tubular section, the other end of which Rethimno closed lid. In this case, it is one of the damping plunger is held by its shank pusher through the flange plate and the other of the damping plunger is held by its shank pusher through the cover. Due to the removable cover can be relatively simple way to mount a damping system in the receiving body and placed there with pre-stress. In addition, the damping plungers preferably several damping elements, which are preferably distanced from each other by intermediate spacers. The damping elements may be of the Belleville springs or other elastic deformable damping elements, through which you can create a return force. Particularly preferably, when the intermediate washer is centered on the inner lateral surface of the tubular section of the receiving body. In addition, each prom is mediate washer can be provided with protruding on both sides of the surface of the washer part of the centering finger. Between the parts of the centering fingers are preferably provided, at least in the initial state of the damping system, a sufficient air gap, to ensure the implementation of the relative motion between the two damping plungers in a big enough way.

For the relative direction between the movable sleeve and the receiving body, the receiving body can be formed, in particular, its outer lateral surface, guide means for the movable sleeve. As the guide means in one embodiment, the outer side surface may be provided with a wedge-shaped guiding metal sheet. In the alternative or additionally, the cover and/or cover, and the flange plate can form guides tools for mobile bushings, why they act in the radial direction over the tubular section and is preferably on the side surface vypecheno parallel to the direction of motion. Due to the protrusion in the radial direction, into contact with the inner surface of the tubular part of the casing front part comes exclusively the lateral surface of both lids or, respectively, one of the cover and flange plates. Due to this, creates the specified contact surface between the PR is taking a damping system and still connected to the circuit receiving the body and its host with the ability to shift in the axial direction of the body of the traction truck, which (the contact surface) even under high shock loads or variable loads reliably prevents the inclined position of the receiving body, and a damping system. According to one particularly preferred variant implementation, each cover may be provided with axially overlapping the ends of the tubular section annular rim to ensure it is possible more elongated in the length of the guide surface and at the same time the flat vypechennoe on the side.

As mentioned above, the intermediate washers can be centered on the inner lateral surface of the tubular section. According to another variant implementation, the damping elements can also be placed on the Central tie rod, and the damping plungers have a side plate blind hole as a free space for movement of the tie rod. To improve the damping direction pushers inner side surface of the tubular section may be in the area all additional, in particular, a finer surface finish and perhaps due to this larger inner diameter, an additional surface treatment preferably is only possible along the guide path for pushers. Also the ends of the tubular phase may have inside additional surface treatment, such as, for example, fine grinding or hardening, with the purpose of further improving the slip between the receiving body for the damping device body and pulling carts. The damping elements may be pre-strained with the tie rod to implement the shortest possible path of movement of the springs. Resistant surface, as is in itself known, preferably provided with a passing vertically slots, which in assembled condition of the traction truck are located on the side of the body of the plane of the strap.

The movable sleeve may consist of open-shell tubular casing, in one embodiment, the parallel to the boundary edge of the tubular shell casing is a guide beam, which runs until both hard surfaces. In addition, the shell of the tubular casing may preferably be provided with at least one longitudinal rib on the outer periphery, with the aim of improving motionless, at the same time detachable fixing between the movable sleeve and the reception in the body of the traction truck.

Other advantages and embodiments of the traction truck, according to the invention, with an integrated damping device follow from the following description of examples of the traction truck, with reference to the accompanying drawings, in which which schematically:

figure 1 is guided on the conveyor mining the plane with traction trolley according to the invention, in top view, partially in section;

figure 2 - hauling truck, according to the invention, with attached chain belts in the initial position, partly in section;

figure 3 - trailer truck, according to figure 2, in the working position when spent way damping;

figure 4 - damping elements of the damping system in the initial position, in an enlarged scale;

5 is a damping elements according to figure 4, with the full effect of the damping device;

6 is a traction truck, according to the second variant implementation of the invention, in perspective and partially in section;

Fig.7 - hauling truck, according to Fig.6, when taken movable sleeve in the future;

Fig - movable sleeve traction truck, according to Fig.6, in the future;

figure 9 is a third example of the traction truck, according to the invention, with attached chain belts in the initial position, partly in section;

figure 10 is a section along the line X-x of figure 9; and

11 is a fragment XI figure 9.

Figure 1 shows the designated generally by the number 1 underground mining plow, which your body 1A of the plow goes by using a not shown guide device according to machine guideline, which is made on a schematic with the part of the panline sections 2 conveyor 3. Native guide or, respectively, the conveyor 3 contain, among other things, chain channel 4, which passes traction branch 5 of the chain plane, with the aim of moving underground mining plow 1 parallel to the conveyor 3 in the bottom. Mining plow 1 is for both directions of F corresponding movement of the rotary tool support plate 6, thus depending on the direction F of movement of one of both assemblies calipers 6 with the respective cutters 6A produces coal or other minerals at the front of the sewage treatment works underground pit, while the other cutting calipers are inactive. Using traction branches 5 chain Struga mining plow 1 can be pulled reciprocating between the ends of the bottom, and force transmission between the chain Struga and mining plow 1 is carried out using the designated generally by item 10 of the traction truck, which is inserted into the open at the lower side of the mining plow 1 in the recess 7. The recess 7 is limited in both directions F movement anthroponymy surfaces 8 of the body 1A of the plow, which are respectively held vertically, the outstanding forward bar 9 for centering and direction of traction of the truck 10 in the recess 7. Mining plow 1 with the above features, as well as installed in the recess 7 of the traction truck 10, known to experts in the art, so further the Scripture is not given here. The invention relates to the execution of the traction truck 10, the construction of which is explained below with reference to figure 2-5.

Figure 2 shows the traction trolley 10 in the same state of stress, as in figure 1. Pulling the cart 10 has a front portion 11, which both the parties i.e. for both directions F movement is limited to the respective thrust surface 12, which is to interact with straps (9 in figure 1) in the hollow body of the plane is equipped on its outer side going vertically slot 13. On the rear side of the traction truck 10 is formed of a relatively massive and going up to about the same height as the front part 11, the connecting member 14, which are adjacent chain links 5A traction branches 5 of the circuit of a plough, with a view to the transfer of the mining plough with the help of the traction truck 10. The connecting element 14 can simultaneously together with lying adjacent to the front part 11 of the intermediate wall 15 to form a guide for the traction of the truck 10 in the chain channel pipeline. Position 16 on the figures marked protective link for chain links 5A on the coupling element 14. Between the connecting element 14 and the front part 11 is formed limited intermediate wall 15 of the guide groove 16, which interacts with a corresponding guide bar on the machine guide, CONV what hyŤres. Pulling the cart 10 is provided according to the invention, the damping device 20, which is integrated into the front part 11 of the traction truck 10 and which ensures that even when changes of direction without obstruction during movement of the plow does not occur excessively strong fluctuations in the force chain tension plow and/or also limited by the wear between the cooperating thrust surfaces 12 and anthroponymy surfaces (8 in figure 1) in the body of the plane. Explanation design integrated in the front part 11 of the damping device 20 are described below with additional reference to figure 3 and 5, these figures used the same position as in figure 1 and 2.

The damping device 20 has several interacting parts or, respectively, the nodes that provide the possibility of movement of the connecting element 14 relative to the thrust surface 12 against the return force of the damping system damping device 20. To achieve this, both the thrust surface 12, which interact with anthroponymy surfaces on the body of the plane, are part of a rigid, stable movable sleeve 18, which is formed by connecting both hard surfaces 12 with passes between their inner surfaces 12' part 19 TRU is striated shell. The end portion 19 of the tubular casing may be, for example, welded to the inner sides 12' of the thrust surfaces 12. In addition, the damping device 20 includes a receiving body 30 having, in this case, overall, eleven of the damping elements 35 of the damping system. The receiving device 30 consists of a closed cylindrical body with a flange plate 31, a cylindrical pipe section 32, one end of which is welded to the flange plate 31 and the cover 33, which by means of screws 34 Rethimno screwed to the other end of the pipe section. At least the flange plate 31, it is also possible pipe section 32 is stationary connected to the connecting element 14, for example, by means of two jumpers 23, which limits the bottom of the guide groove 17 between the towering wall 21 of the front part 11 and the intermediate wall 15. As the flange plate 31 and the cover 33 are parallel to the middle axis M of the movable sleeve 18 and, accordingly, the receiving body 30 of the passage 36 or 37, through the passages 36, 37 and passes the shank 38 of the damping plunger 39. The shank 38 of both the damping plungers 39 are connected in one piece with the plate 40. Plates 40 both damping plungers 39 are located in the inner space of the receiving body 30 so that the normal voltage of the damping element is in 35 plate 40 of the first damping plunger 39 exerts a pre-stress to the inner side of the flange plates 31, and the plate of the second damping of the pusher 39 is pressed against the cover 33. This stress state of the damping elements 35, which typically occurs when the circuit plow applies a traction force to the traction trolley which is less than the pre-tension of the damping elements 35 shown in figure 2.

If the connecting element 14 has a higher traction force through the chain links 5A traction chain 5 to move the traction truck 10, as well as the mining plow in the direction of motion, then the receiving body 30 and, accordingly, all of the connecting part 14 is moved in the pulling direction of the chain 5 to plow lying in the direction F of movement of the thrust surface 12, i.e. a relatively hard surfaces 12 and part 19 of the tubular casing movable sleeve, which is essentially without a gap in the recess of the body of the plane. This state is shown most clearly in figure 3, in which the cover 33 of the receiving body is attached directly to the inner side 12' of the right thrust surface 12. Through the thrust surface 12 from the initial position according to figure 2, until the end position according to figure 3, on the body of the plow operates damped with the damping elements 35, in particular with respect to impact loads, traction, with the aim of moving the body of the plane, for example, to the right. Comparing images on the Phi is .2 and 3 shows the protective element 16 and the intermediate wall 15, which are made integrally on the connecting element 14, is shifted to the right compared with the image in figure 2, since the connecting member 14 is moved relative to the thrust surfaces 12. The shift of the receiving body 30 relative to the movable sleeve 18 occurs with the formation of the return force of the damping elements 35 in accordance with their spring characteristic, as well as by maximum shift between the extended condition of the damping of the pusher at 2 and pushed the state of the damping plunger 39 figure 3. Due to a suitable choice of the damping elements 35 can be achieved in that at least under normal load always remains small spring path, so that during the movement of the plane is always granted damping force by the damping device 20. Due to the preliminary tension of the damping elements 35 can provide damping when all forces between 100 kN and 500 kN. Located inside the movable sleeve 18 of the receiving body 30 for damping plungers 39 and the damping elements 35 may have or to form a sliding guides or the like to a movable sleeve 18.

Both different state voltage of the damping elements 35 shows the person is but clearly in figure 4 and 5. Thus in figure 4 the damping elements 35 shown in the initial state, in which the damping elements 35 with pre-stress, for example, about 100 kN, sandwiched between the flange plate 31 and are not depicted here with a lid. Between every two damping elements 35 is located intermediate the washer 41, which is centered on the inner side surface 32' of the tubular part 32. In contrast, the damping elements 35 are of sufficient distance from the inner side surface 32' and centered with relatively short finger portions 42, which are located in the center relative to the Central axis of the receiving body 30 and protrude on both sides with a uniform distance for intermediate washer 41. The finger portion 42 and an intermediate washer 41 may be welded to each other. In figure 4 you can see that between every two finger portions 42 formed in the air gap, while the total length of all gaps between the finger portions 43 corresponds to the maximum spring path or restricts it. The voltage condition of the damping elements 35 with the maximum return force is shown in figure 5, where there are no more gaps between the individual finger portions 42. To protect the damping elements 35 in the inner space of the receiving body from dirt and the like, with the festival of the AMI 37 in the flange plate 31, and with the passage in the cover aligned corresponding rod seal 43, which is hermetically attached to the shank 38 of the pusher.

Figure 6-8 are shown schematically in simplified form another particularly preferred embodiment of made of several parts of the traction truck 110, according to the invention, with the connecting element 114, which in this simplified form, shows no hook to attach the chain and ends in the intermediate wall 115, which limits the guide groove 117 with backfill side of the face. At the bottom of the traction truck 110 is formed in this case a solid jumper 123, which connects the intermediate wall 115 of the connecting portion 114 with a relatively massive, vertically rising wall 121 of the front portion 111. In the example, run the connecting portion 114 with the adjacent intermediate wall 115, a bottom jumper 123 and the wall 121 is composed of a molded part, but it may also consist of welded construction. Figure 6 and 7 can well see that towering wall 121 turned on when working to Oistamo the bottom front surface provided with polyacrolein 124, which is partly adjacent and preferably welded tubular section 132 of its cylindrical outer wall. Tubular section 132 acts on both sides for facing in the direction of the movement toward the end surface 121' of the wall 121, as they have between their two end surfaces 121' is slightly shorter length than the length of the tubular section 132. Both ends of the tubular section 132 are closed with lids 134; both cover 134 may be threaded ledge, which is screwed to the internal thread inside the tubular section 132. On on the mortgage side of the side surface of the tubular section 132, over the wall 121 and essentially opposite the connecting element 114, respectively, of the intermediate wall 115, to tubular section 132 is welded wedge-shaped guide beam 160, positioned on the mortgage side and pointing to the guide groove 117, the front surface 161 which is flat and runs essentially perpendicular and parallel to the bounding wall of the wall 121. Tubular section 132 of the receiving body 130, in turn, accepts the damping device, from which 7 shows only passing through the cover 134 damping plunger 139 and figure 6 - intermediate finger portion 142.

A movable sleeve 118, which is shown in detail on Fig has an approximately C-shaped, elongated on one shoulder sheath 119 tubular casing which its semicircular inner surface 119' goes on the outer periphery of the tubular section 132 of the receiving body 130 over a relatively large surface is. For additional directions to the free edge section 172 extending C-shaped cross-section of the shoulder 170 of the shell 119 tubular casing is welded solid guide bar 171, which interacts with the wedge-shaped guide bar 160 during the relative shifting of the fitting 114 and the movable sleeve 118 and provides the parallel direction of both parts relative to each other. This flat inner surface 171' lies directly opposite the front surface 160 of wedge-shaped guide beam 160, as may be seen, in particular, figure 6. Guide beam 171, which is preferably welded to the free edge 172 of the shell 119 tubular casing, passes between the two end stops 112 movable sleeve 118 and preferably also welded with both hard surfaces 112. In addition, in the example of execution to the outer periphery of the shell 119 of the tubular casing are welded two offset in the circumferential direction relative to each other lengthwise of the strap 180, 181, which is fixed in the groove in the recess in the body of the plane or can interact with the bounding edge of the notch on the body of the plane, with the aim of improving the fixed placement of the movable sleeve 118 in the recess in the body of the plane, in addition to passing vertically in the slots 113 in the axial surfaces 112.

N the Fig.9-11 shows the third exemplary embodiment is indicated generally by the position 210 of the traction truck. In this case, forming a movable sleeve 218 front part 211 is also limited in both directions of movement of the respective thrust surface 212, which to interact with from the body of the plow straps provided each on its outer side going vertically slot 213. On the rear side of the guide recess 217 is connecting element 214, which is connected both branches of the circuit plane and which is welded with integral, bounding from below the guide groove 217 of the bottom crosspiece 223 with a few solid bars 290, 291 on the outer periphery of the tubular section 232 of the receiving body 230. A movable sleeve 218 may be taken with shift by using consisting of a molded part shell part 219 a flat outer sides of the receiving body 230, while the shell part 219 connects for one both resistant surface 212 with each other, even when the shell portion is shown in Fig.9 as consisting of several parts welded. In contrast to the previous exemplary embodiment, the tubular section 232 is closed at both ends removable, in this case made identical to each other and screwed from the front side to the ends of the tubular section 232 covers 233 relative to the receiving body 230 for the damping device 220. The damping device is istwo 220 has several suitable damping elements 235, are separated from each other by using centered on the inner lateral surface of the tubular section 232 of the intermediate spacers 241 and using passing through the center of the damping elements 235 and an intermediate washer 241 tie rod 295 pre-assembled with pre-stress. Using screwed on one end of the tie rod 295 coupling nut 296 is possible to set the damping element 220 with sufficient pre-stress in order to press in the initial state, passing through the center through both the cover 233 damping plunger 239 to the inner sides of the thrust surfaces 212. Figure 9 shows the initial position. Depending on the movement direction, the connecting portion 214, which is quasi rigidly connected with the receiving body 230 may move relative to the thrust surfaces 212, until one of the covers 233 will not rest against the inner surface of the adjacent hard surface 212. Blind holes 297 for damping plungers 239 provide sufficient clearance for movement of the free end of the tie rod 295 and allow you to change the distance between the damping plungers 239 overcoming the return force of the damping elements 235.

Figure 9 receiving the receiving body shell 230 part 219 is shown consisting of several parts. However, it preferably is composed of a single molded part or the like To optimize the relative motion between the receiver body 230, on the one hand, and the shell part 219, on the other hand, both the cover 233 is made in the form of guide means, which provide the most accurate direction of the receiving body 230 on the inner periphery of the shell part 219. As shown most clearly figure 11, the cover 233 protrude in the radial direction far enough its radial side surface 233' for connecting the cover 233 of the tubular portion 232. Cover 233 are provided with an annular rim A, which stands out beyond the ends of the tubular portion 232, with the purpose of the seal in the assembled condition, the traction trolley 210 solely side surface 233' cover 233 to the inner lateral surface of the shell part 219. To further improve the areas between the shell part 219 and the receiver body 230, the side surface 233' takes place in this case, protruding in the direction of motion and, respectively, in the axial direction of the receiving body 230, which occurs optimum fit and the sliding surface between the receiving body 230 and the shell part 219. In end zones of the shell portion 219 may contain inside additional surface treatment, to minimize friction losses when there is relative movement of the receiving body 230 consider is Ino shell part 219 during operation. Similarly, the inner surface of the tubular portion 232 near the ends may also be provided with an additional surface treatment, with the aim of improving the slip characteristics of the damping pushers 239, in particular, they are located side plate ends, the motion damping. With the above measures, even at high shock loads are achieved gentle material relative motion between the shell part 219 and the receiver body 230, along with the damping device 220.

From the above description for specialists in this field of technology understandable numerous modifications that should be included in the scope of protection of the attached claims. In particular, the implementation of hard surfaces, the coupling element, the receiving body, and the number and performance of the damping elements may vary depending on run size and weight of the mining plow and apply the chain plane. By increasing or decreasing the spring stroke or due to the choice of the damping elements, you can set the maximum damping force, which acts damping and allows damping excessive voltage circuit. In particular, the damping elements can consist of Belleville springs, or other elastic Def is reremix and accumulating the recoil force of the damping elements.

1. Traction truck for underground mining of a plane containing the insert in the recess of the body of the plow body traction truck, which is on the rear side of the guide grooves (17) has a connecting element (14) for mounting the plow chain, and on the front side of the guide grooves - the front part (11), pointing in the direction of movement of the ends of which form a hard surface (12) to communicate with anthroponymy surfaces in the recess of the body of the plane, with the front part (11) of the traction trolley (10) integrated with current damping in both directions of movement of the damping device (20), characterized the fact that the connecting element (14) is movable relative to the thrust surfaces (12) with overcoming the return force located between the thrust surfaces (12) of the damping system damping device (20).

2. Traction trolley according to claim 1, characterized in that there are still United with the connecting element (14) of the receiving body (30) for receiving the damping system.

3. Traction trolley according to claim 2, characterized in that the thrust surface (12) form the ends of the movable sleeve (18), in the inner space of which is movably receiving body (30), preferably the inner side (12') of hard surfaces (12) form stops for the relative movement to the Oia between the sliding sleeve (18) and the receiving body (30).

4. Traction trolley according to claim 2, characterized in that the damping system (20) has for each direction (F) motion damping plunger (39), the shank (38) of the pusher protrudes from the receiving body (30) and is mounted with the ability to shift against the action of a return force, at least one damping element (35) relative to the other of the damping plunger (39).

5. Towing Dolly according to claim 4, wherein each of the damping plunger (39) is located in the receiving body (30) of the plate (40)on the front side of which is formed a shaft (38) of the follower and the rear side of which rests against the damping element (35).

6. Towing Dolly according to claim 5, characterized in that between the plates (40) is the centering finger, in particular telescopic centering finger damping elements.

7. Traction trolley according to claim 2, characterized in that the receiving body (30) is preferably welded to the connecting element (14) flange plate (31), which is welded to the tubular section (32), the other end of which Rethimno is closed by a cover (33), preferably one damping plunger (39) is held by its shank (38) of the pusher through the flange plate (31), and the other of the damping plunger (39) passes through the cover (33).

8. Towing Dolly according to claim 4, characterized in that between Denver the sponding tappets (39) there are several damping elements (35), which are distanced from each other by intermediate washers (41).

9. Pulling the cart of claim 8, wherein each intermediate plate (41) is provided with a protruding on both sides of the surface of the washer part (42) of the centering finger.

10. Traction trolley according to claim 2, characterized in that the receiving body (130) forms a means for directing a movable sleeve (118), in particular provided with a wedge-shaped guiding metal sheet (160).

11. Traction trolley according to any one of claim 2, 9 or 10, characterized in that the receiving body (130; 230) is still connected to the connecting element (114; 214) tubular section (132; 232), which is closed at both ends with removable covers (134; 234).

12. Traction trolley according to claim 7, characterized in that the cover (233) and/or flanged plate forming means for directing a movable sleeve (218), protrude in the radial direction for a tubular section (232) and is preferably vypecheno on the side surface (233') parallel to the direction of movement.

13. Traction trolley in claim 11, characterized in that the cover (233) and/or flanged plate forming means for directing a movable sleeve (218), protrude in the radial direction for a tubular section (232) and is preferably vypecheno on the side surface (233') parallel to the direction of movement.

14. Pulling the cart on p.12, characterized in that the cover (233) provided with axially overlapping the ends of the tubular section (232) annular rim (A).

15. Pulling the cart through 13, characterized in that the cover (233) provided with axially overlapping the ends of the tubular section (232) annular rim (A).

16. Traction trolley according to any one of claims 7, 12-14 or 15, characterized in that the intermediate washers (41; 141; 241) centered on the inner side surface (32'; 232') pipe section (32; 232).

17. Traction trolley in claim 11, characterized in that the intermediate washers (41; 141; 241) centered on the inner side surface (32'; 232') pipe section (32; 232).

18. Traction trolley according to any one of claims 4, 5 or 7, characterized in that the damping elements (235) located at the Central tie rod (295), and/or that the damping plungers (239) have a side plate blind hole (297) as free space for movement of the tie rod (295).

19. Traction trolley according to claim 3, characterized in that the sliding sleeve (118) consists of an open shell (119) of the tubular casing, with preferably parallel to the boundary edge (172) shell (119) of the tubular casing is a guide beam (171), which runs until both hard surfaces (112), shell (119) a tubular casing provided with at least one longitudinal bar (180) on uenoi the periphery.



 

Same patents:

FIELD: mining.

SUBSTANCE: guide for pulling chain of mining machine, namely for chain of plough on mining plough with drive stations and/or rotary sprockets of pulling chain (11), which are installed in end sections of mining machine, and at least with one element (21; 121) of the guide for chain, which are spatially located near chain sprockets (18) on drive station and/or turning station and pressed across chain movement direction to its load and/or empty branch. Element (21; 121) of chain guide includes at least one pressure roller (22; 122) pressed to links (33) of pulling chain (11); at that, pressure roller (22; 122) is installed on roller axis (29; 129) with possibility of rotation and replacement together with it. Axis (29; 129) of pressure roller (22; 122) rests on brackets (28, 28A; 128) of bearings, which are installed in receiving pocket (40; 140); besides, brackets (128) of bearings in receiving pocket (140) are protected against unfixturing at least by means of one retractable fixture (190). Pressure roller (22; 122) has bearing race (23) matched with enveloping surface (34) determined with links (33) of the chain. Pressure roller (22; 122) is arranged in lead-in unit (25; 125) installed in inlet section (19) of drive station and/or turning station (17) with possibility of being replaced. Brackets (28, 28A; 128) of bearings are installed in receiving pocket (40; 140) with possibility of being replaced. Brackets (28, 28A) of bearings in receiving pocket (40) are protected against unfixturing by means of a hinged cover (35). Upper bracket (128) of bearing is equipped with guides (173) for retractable fixtures (190). Above receiving pocket (140) there installed are retaining units (166) with fixing seats (165) facing each other, and retractable fixtures (190) have fixing projections (198) which are locked in fixing seats (165) to protect upper bracket (128) in receiving pocket (140) against unfixturing. Guide includes pair of retractable fixtures (190); at that, each retractable fixture (190) has U shape with base (191) and three elbows of which one extreme elbow (193) and intermediate elbow (194) on outer sides facing each other are equipped with guide planks (195, 196) to be installed in guides (173) with form closure, and the second extreme elbow (192) has passage opening (199) for locking bolt. At the bottom of receiving pocket (14) there located is lower seat (155) for roller axis (129), and is mainly made in lead-in unit (125) as a part of it or rigidly attached to it. Guide includes several pressure rollers pressed or to be pressed to chain (11) and located one after the other in chain movement direction. Pressure roller (22) is pressed to chain under action at least of one elastic element. Pressure roller (22) is pressed to the chain under action at least of one shock absorber.

EFFECT: improved wear resistance of the chain.

12 cl, 7 dwg

FIELD: mining.

SUBSTANCE: proposed section of tear-off planer comprises guide element arranged on the side of mined-out space from haulage chute and return travel conveyor chute, upper channel for haulage chain and lower channel for haulage chain, and guide slot, open towards breakage face, for engagement of under-conveyor plate of tear-off planer. Note here that said guide element can carry at least one cover element to stop inspection hole for both haulage chain channels that comprises connecting cantilever for hydraulic cylinder to control conveyor unit inclination and receiving bins for heads of boltless joint between conveyor chutes in rigid joints of adjacent sections of tear-off planer guides. Guide element consists of casting incorporating receiving pans, and/or return travel conveyor chute sections on the side of mined-out space, and/or guide for under-conveyor plate of tear-off planer.

EFFECT: longer life, efficient use.

15 cl, 6 dwg

FIELD: mining.

SUBSTANCE: invention refers to driving facility for sprockets of chain drives, particularly to drive of scraper-chain transporters or chain plane knives for underground mine developments. Drive incorporates the asynchronous electric engine and a gear box. Also the asynchronous electric engine consists of an engine with feeding from a frequency converter, while there is an intermediary two-speed sprocket gear box in the driving block between an engine shaft and the gear box; the intermediary gear box is designed in particular as the front gear box with one starting and one normal stage, when by means of the latter starting effect in the starting stage can be achieved, which is required for starting of loaded scraper-chain conveyer or for free pulling of the chain plane knife.

EFFECT: regulating rotary speed and torque of asynchronous electrical engines.

22 cl, 3 dwg

FIELD: mining.

SUBSTANCE: invention refers to mining, particularly to guide for plough with chain rod. The guide of the plough with chain rod consists of guiding sections which are made complex and designed to be connected between themselves by means of connecting elements providing high tensile strength and angular freedom. Also each guiding section of the plough has middle part with chain guiding channels arranged one above the other; corresponding end part is welded to each side of the middle part; this end part is made out of integral cast item with assembled one above the other sections of chain channels separated with cast-on antifriction distance element. The end sections are equipped with cast-on opened from the side of mining face pockets for connecting units which serve as connecting elements. Each end section has predominantly closed circular upper section of the chain channel where an upper section of the chain channel has conjugating projection at one of the two side parts, while an upper section of the chain channel of the other end section has responding indent.

EFFECT: increased service life of plough guide and economy of fabrication.

18 cl, 8 dwg

FIELD: guiding devices for chain in mining machine, in particular, in mining drawknife.

SUBSTANCE: guiding device for chain is mounted in one of its chain channels for loading or blank branch in area of transition to driving block or rotary mechanism. Device has receiving pocket open towards driving chain and hold-down tool. Pocket is limited at end by hinged finger positioned across chain movement direction. Hold-down tool on one end is provided with base element for finger, synchronized with hinged finger, open on one side, and also with holding element. Hold-down tool has on its lower side a holding surface, adjoining driving chain in state of hold-down setup in receiving pocket and of holding.

EFFECT: shorter time needed for repairs.

14 cl, 3 dwg

The invention relates to the mining industry, mainly for stoping coal complexes with mehrabani and plows

The invention relates to mining

FIELD: guiding devices for chain in mining machine, in particular, in mining drawknife.

SUBSTANCE: guiding device for chain is mounted in one of its chain channels for loading or blank branch in area of transition to driving block or rotary mechanism. Device has receiving pocket open towards driving chain and hold-down tool. Pocket is limited at end by hinged finger positioned across chain movement direction. Hold-down tool on one end is provided with base element for finger, synchronized with hinged finger, open on one side, and also with holding element. Hold-down tool has on its lower side a holding surface, adjoining driving chain in state of hold-down setup in receiving pocket and of holding.

EFFECT: shorter time needed for repairs.

14 cl, 3 dwg

FIELD: mining.

SUBSTANCE: invention refers to mining, particularly to guide for plough with chain rod. The guide of the plough with chain rod consists of guiding sections which are made complex and designed to be connected between themselves by means of connecting elements providing high tensile strength and angular freedom. Also each guiding section of the plough has middle part with chain guiding channels arranged one above the other; corresponding end part is welded to each side of the middle part; this end part is made out of integral cast item with assembled one above the other sections of chain channels separated with cast-on antifriction distance element. The end sections are equipped with cast-on opened from the side of mining face pockets for connecting units which serve as connecting elements. Each end section has predominantly closed circular upper section of the chain channel where an upper section of the chain channel has conjugating projection at one of the two side parts, while an upper section of the chain channel of the other end section has responding indent.

EFFECT: increased service life of plough guide and economy of fabrication.

18 cl, 8 dwg

FIELD: mining.

SUBSTANCE: invention refers to driving facility for sprockets of chain drives, particularly to drive of scraper-chain transporters or chain plane knives for underground mine developments. Drive incorporates the asynchronous electric engine and a gear box. Also the asynchronous electric engine consists of an engine with feeding from a frequency converter, while there is an intermediary two-speed sprocket gear box in the driving block between an engine shaft and the gear box; the intermediary gear box is designed in particular as the front gear box with one starting and one normal stage, when by means of the latter starting effect in the starting stage can be achieved, which is required for starting of loaded scraper-chain conveyer or for free pulling of the chain plane knife.

EFFECT: regulating rotary speed and torque of asynchronous electrical engines.

22 cl, 3 dwg

FIELD: mining.

SUBSTANCE: proposed section of tear-off planer comprises guide element arranged on the side of mined-out space from haulage chute and return travel conveyor chute, upper channel for haulage chain and lower channel for haulage chain, and guide slot, open towards breakage face, for engagement of under-conveyor plate of tear-off planer. Note here that said guide element can carry at least one cover element to stop inspection hole for both haulage chain channels that comprises connecting cantilever for hydraulic cylinder to control conveyor unit inclination and receiving bins for heads of boltless joint between conveyor chutes in rigid joints of adjacent sections of tear-off planer guides. Guide element consists of casting incorporating receiving pans, and/or return travel conveyor chute sections on the side of mined-out space, and/or guide for under-conveyor plate of tear-off planer.

EFFECT: longer life, efficient use.

15 cl, 6 dwg

FIELD: mining.

SUBSTANCE: guide for pulling chain of mining machine, namely for chain of plough on mining plough with drive stations and/or rotary sprockets of pulling chain (11), which are installed in end sections of mining machine, and at least with one element (21; 121) of the guide for chain, which are spatially located near chain sprockets (18) on drive station and/or turning station and pressed across chain movement direction to its load and/or empty branch. Element (21; 121) of chain guide includes at least one pressure roller (22; 122) pressed to links (33) of pulling chain (11); at that, pressure roller (22; 122) is installed on roller axis (29; 129) with possibility of rotation and replacement together with it. Axis (29; 129) of pressure roller (22; 122) rests on brackets (28, 28A; 128) of bearings, which are installed in receiving pocket (40; 140); besides, brackets (128) of bearings in receiving pocket (140) are protected against unfixturing at least by means of one retractable fixture (190). Pressure roller (22; 122) has bearing race (23) matched with enveloping surface (34) determined with links (33) of the chain. Pressure roller (22; 122) is arranged in lead-in unit (25; 125) installed in inlet section (19) of drive station and/or turning station (17) with possibility of being replaced. Brackets (28, 28A; 128) of bearings are installed in receiving pocket (40; 140) with possibility of being replaced. Brackets (28, 28A) of bearings in receiving pocket (40) are protected against unfixturing by means of a hinged cover (35). Upper bracket (128) of bearing is equipped with guides (173) for retractable fixtures (190). Above receiving pocket (140) there installed are retaining units (166) with fixing seats (165) facing each other, and retractable fixtures (190) have fixing projections (198) which are locked in fixing seats (165) to protect upper bracket (128) in receiving pocket (140) against unfixturing. Guide includes pair of retractable fixtures (190); at that, each retractable fixture (190) has U shape with base (191) and three elbows of which one extreme elbow (193) and intermediate elbow (194) on outer sides facing each other are equipped with guide planks (195, 196) to be installed in guides (173) with form closure, and the second extreme elbow (192) has passage opening (199) for locking bolt. At the bottom of receiving pocket (14) there located is lower seat (155) for roller axis (129), and is mainly made in lead-in unit (125) as a part of it or rigidly attached to it. Guide includes several pressure rollers pressed or to be pressed to chain (11) and located one after the other in chain movement direction. Pressure roller (22) is pressed to chain under action at least of one elastic element. Pressure roller (22) is pressed to the chain under action at least of one shock absorber.

EFFECT: improved wear resistance of the chain.

12 cl, 7 dwg

FIELD: mining.

SUBSTANCE: invention refers to mining industry, and namely to towing trolley for underground mining drawknife. Towing trolley for underground mining drawknife includes a towing trolley body inserted in the drawknife body cavity, which is provided on rear side of the cavity guide with a connection element to fix the drawknife chain, and on front side of the cavity guide - with front part, the ends of which indicate the movement direction and form thrust surfaces to interact with counter-thrust surfaces in the drawknife body cavity; at that, a damping device is integrated into the front part of towing trolley and acts with damping in both movement directions. Connection element is movable relative to thrust surfaces with overcoming of back force of damping system of damping device, which is located between thrust surfaces. The provision is made for a receiving body that is rigidly connected to the connection element to receive the damping system. Thrust surfaces form ends of movable bushing, in inner space of which the receiving body is located in movable manner; at that, inner sides of thrust surfaces preferably form thrusts for relative movement between movable bushing and receiving body.

EFFECT: increasing the device efficiency.

16 cl, 12 dwg

FIELD: process engineering.

SUBSTANCE: set of inventions relates to cutters to be attached to grader body element and to underground extraction graders, particularly, to development of steeply inclined coal seams. Grader comprises body with means to guide it in its guides, cutters with multiples seats for individual cutters. Grader comprises split body with two main elements and body mid element to be fitted between said main elements and tool plate attached to grader body mid element. Tool plate front has recesses for fixation of cutter seats while its rear has slitted recess for rigid connection of fixation ledge made at grader body mid element. Tool plate rear part front end has longer top part and shorter locking part with slitted recess made there between.

EFFECT: reliable attachment of cutters, optimized development of minerals.

16 cl, 9 dwg

FIELD: process engineering.

SUBSTANCE: invention relates to mining, particularly to coal of minerals ploughing at inclined strata, particularly, of steep deposits. Ploughing plant comprises plough, at least on pull chain to displace plough over coal work face and guide mechanism arranged along coal work face by means of sliding guide runners. Said plough has split ploughing body with two main elements. Ploughing body main element is provided with retainer for separate pull chain and one or several guide sliding runners. Guide mechanism has two guide plates spaced apart by, in fact, identical distance to coal work face over which plough body is driven with help of their guide sliding runners.

EFFECT: working of coal seams with higher safety.

30 cl, 11 dwg

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