Plough for underground mineral resources mining

FIELD: mechanics, mining.

SUBSTANCE: invention relates to mining, particularly, to coal ploughs. Plough for underground mineral resources mining comprises plough casing moving along plough guide. The plough casing incorporates, at least, one bearing element accommodating a skid. Latter features, at least, one bearing surface on its lower side that slides, in the skid operating position, on over the guiding rail of the plough guide. The skid lower side features, at least, one wearable insert.

EFFECT: longer life, lower costs of production and operation.

13 cl, 5 dwg

 

The invention concerns a plow for underground mining, particularly coal plow, plow, which is directed along the width of the plow, and the plow has at least one supporting element for placement of a runner having at least one formed on the lower side of the bearing surface which slides in the working position on the guide rail guiding the plow.

Such a plane with snake known, for example, from DE 3313502. Known the plow goes by his plow, which includes mining mining tool along the guide plane and connected at both ends by means of the support element with replaceable skid. Each runner's guide Shoe, which is based on the reference element.

During operation of the plow skids slide with the sliding surface provided on the lower side guide rail of the guide plane. Under the weight of the plow and effort that must be passed during operation of the plow from the runners on the guide rail, the rails are subjected to particularly high abrasion/wear. Therefore, runners Rethimno connected with the plow for quick and easy replacement of worn-out runners. However, the replacement of worn-out runners associated with large ZAT is Atami. Runners, in the aggregate, are relatively complex structural elements, making them expensive. Replacement may take a relatively long time, and this time the plane will be decommissioned, so that cuts the coal is terminated.

The objective of the invention is the creation of a plane called the first type, at least one skid, which not only would have had a long life, but at the same time would be inexpensive in manufacture and operation.

This problem can be solved by the invention by the fact that the snake has on its bottom side, preferably in the area of greatest load, at least one wear the tab. Come wearing tab snake can a long time to withstand high mechanical loads than previously known runners. For these purposes in the areas of greatest load can effectively and concentrated to apply more isotony material, which may be more expensive than the base material of the runners. Thus the runners glide mainly wear tab or, respectively, the wear tabs.

In a preferred improvement of the invention, the skid is formed as a hinged skid that has the ability to swivel in the normal reservoir rocks plane connection of the a priori element, moreover, the axis of rotation passes at right angles to the two opposite directions of sliding of the skid, and, accordingly, one wearing a tab is provided in front of the axis of rotation, and one wearing a tab behind the axis of rotation. Acting on the skid force is distributed on both the wear tabs, and the ratio of the force components applied corresponds to the inverse ratio of the operating levers moving tabs around the axis of swing. At the same time operating levers meet when approaching existing in the direction of slide distance between centers of gravity of the surface of both surfaces of the sliding wear of the tabs and the axis of rotation.

It is possible that the distance from wearing one tab to the axis of rotation is approximately two times greater than the distance from wearing another tab to the axis of rotation. This means that one wearing the tabs should take twice the load than the other wearing tab. It may be appropriate that located closer to the axis of rotation of the wear tab has a greater effective surface and/or a higher wear resistance to achieve even wear on both the wear tabs. If, on the contrary, to choose a very small distance between one isnative is considered the tab and the axis of rotation, this tab will be wearing to bear almost the entire load, which can lead to the corresponding one-sided wear of the wear tab.

Preferably, the distance from both the wear tabs to the axis of rotation would be approximately equal. Thanks to this location, both wearing the tabs are approximately the same load and thus of the same size and durability also wear out in about equal measure.

Wearing(bill) tab(s) can be made of hard alloys, resulting in high wear resistance. The individual wearing the tabs may also be made of hard metal pins, which are cast in a matrix, for example, from cast steel. This matrix, in turn, may carry the bulk of the plate is preferably made of material that can be welded.

Made of hard alloy pins can be located in the wear tab so that they are transversely to the sliding direction of the skid. Their peripheral circuit can be formed so that when worn it will not have or to form sharp edges that could cause damage to the stationary guide rail.

Preferably the wear tab fixed with option C the exchange on the underside of the skid. The fastening may be accomplished, for example, by means of a threaded connection. However, preferred is a variant in which the wear tab is attached to the underside of the skid by soldering or welding.

Reasonable wear strip is made in the form of a wear plate which is inserted in adjusted preferably essentially rectangular recess on the underside of the skid. Wear plate may end flush with the bottom surface or slightly to speak.

In a preferred development of the invention the lower side, at least one area stands out, and the plot takes wearing the tab so that, essentially, only wearing this tab rests on the guide rail. Thereby, it is possible to guarantee the absence of wear in the area of the snake, in which there is provided a wear-resistant material.

Preferably the skid is equipped with hook nozzle, which includes acting, distilirovanoy from the guide Shoe shoulder and together with the guide Shoe forms open up approximately U-shaped reception downward directing a beam guide the plow. Therefore, during operation of the skid is also sent in the transverse direction through the guide beams, to the which cover the shoulder and the guide Shoe, i.e. transversely to the longitudinal direction of the guide rail.

Preferably the guide Shoe is on one side, facing the speaker shoulder, vysokopillay ledge. The scarp associated with the crossmember hook nozzle, which connects the protruding shoulder and the guide Shoe may be greater than the height of the shoulder. Vysokopillay escarpment is a large contact surface for the guide Shoe, which reduces the wear in this area. On the inner side of the shoulder and/or facing shoulder surface of the ledge can also be provided by wearing tab.

The guide Shoe can have an open up slot, which may be a basic element of a plane, and the end side of the groove formed in the form of a pivot bearing (nest), whereby the skid together with a correspondingly shaped supporting element of the plane forms a swivel connection.

Other features and advantages of the invention follow from the following description and drawings, which are explained in more detail embodiments of the invention.

Figure 1 - corresponding to the invention of the plow with the guide rail and mounted on the plow, which relies on the rails, on the front view.

Figure 2 is an enlarged image of a runner of a plane according to figure 1.

F. the D.3 - the snake according to figure 2 in side view.

4 is a snake in the long term, with hidden lines or edges are depicted by shading.

5 is a snake in perspective and bottom.

Figure 1 before cleaning or coal face (not illustrated) has a face conveyor 1, which presents only addressed to the working face side profile 2 and base 3 convier. On the side profile 2 AFC 1 from stope mounted guide 4 Struga, which essentially marked only by the circuit. Guide 4 plane as the face conveyor 1 consists of separate parts that can horizontally and vertically to form a slight angular deviations relative to each other. The basic design is similar to the plow known and requires no detailed description.

Guide 4 plane has a lower guide rail 6, which is based on a housing 7 of a plane with its two face ends by means of respective runners, of which Fig 1 is only visible to the runner 8. Above the guide rail 6 rail 4 plane has a lower chain channel 9 and the upper chain channel 10, through which passes the endless chain 11 to the drive housing 7 of the plow along the guide 4 of the plow.

Figure 1 is a visible one fixed to the body 7 of the plow pin 12 for the reception are not presented here cutting plan and, fixed on tools for blasting coal.

In its upper region guide 4 plane is oriented upward, the guide bar 13. The guide bar 13 covers the upper guide nozzle 14 of plow body. Between the guide nozzle 14 and the guide plate 13 is provided a U-shaped guide element 15, which is subjected to increased wear and therefore is connected with a guide nozzle 14 with the ability to detach and replace. On the upper side of the housing 7 of the plow fixed crane loop 16 through which it can be lifted with suitable lifting means.

The runner 8 is sliding its lower edge 17 on the guide rail 6. Snake has a side Shoe 18, which has located on the housing 7 of the plow and downward supporting element (hidden, not shown). Through supporting element is gravity plane 7 and the current when operating on the plane of the efforts transmitted to the runner 8 and thereby to guide the plow 4. Snake 8 forms a U-shaped reception 19, which covers aimed down the guide beam 20 on the guide plane, so that transverse forces, i.e. efforts across the direction of movement of plow body can be fixed on the snake 8.

Figure 2 shows the skid 8 in an enlarged scale. Provided for directing a beam 20 of the direction of the Commissioner 4 Struga U-shaped reception 19 is limited on one side hook nozzle 21, which forms a protruding shoulder 22 of the reception 19. The shoulder 22 is rounded at its end ends (see, for example, figure 4). Vysokopillay ledge 23 of the guide Shoe 18 forms another shoulder of the U-shaped receiving 19. Height vysokopolnogo ledge 23 relative to the cross member 24 connecting the ledge 23 and the shoulder 22 of the U-shaped receiving 19, the height of the opposite shoulder 22. In the working position of the skid 8 shoulder 22 is included in the chain channel 9 (as shown in figure 1) and with a ledge 23 provides lateral guide skid 8.

Figure 3 represents a section along the line In figure 2. In section depicts two wear plate tabs 25 and 26, which are inserted in the convex lower side 17. Wearing the tabs consist of hard-alloy plates, which are inserted into appropriately cut the notches on the bottom side of the skid 8 and fastened to them by means of soldering or other suitable method. Due to its production of hard alloys wearing tabs are particularly durable, so come wearing tabs snake has a considerably longer service life to the necessary replacement of the skid with a new one. Old snake can easily and with low cost to be repaired due to a simple restoration only wear tabs, which essentially alone are subjected to high wear, sleds the ance transfer gravity and effort blasting from the body of the plane to guide the plow. Even if the cost of the material of the wear tabs are high, yet the cost of multiple possible recovery of the species is lower than the cost of replacement of the skid to an entirely new snake.

The dashed lines in figure 3 depict the end walls 27 and 28 of the groove 29 (see figure 4), which is open both up and down is formed of end walls 27, 28 and the longitudinal walls 30, 31 of the guide Shoe 18.

As can be seen from figure 4, the end wall 27 of the groove 29 is made in the form of an open to the inner side of the groove, solid, hard pivoting bearing type policharki, which is inserted with the possibility of rotation of the supporting element with a correspondingly designed swivel head (not shown), which is suitable for input into the groove. Opposite wall 27 of the wall 28 is made as zelobkova contact surface that receives the convex rounded rear surface of the support element.

The axis of rotation of the swivel connection between the support element housing 7 of the plow and skid 8 passes perpendicular to both directions of sliding of the skid, which is shown by the double arrow 32 in figure 2. According to figure 3, the axis of rotation passes through the point of intersection of the dashed lines 33, 34. The corresponding distances from the wear tabs 25 and 26 respectively to the axis of rotation are in the ratio 1:2. what that means, that, on the basis of the equilibrium of moments around the axis of rotation, mounted near policharki 27 wearing tab 25 accept themselves two times greater load than the wear tab 26. By determining the size of the wear tabs on its working surface slip and wear resistance can be considered different load.

Figure 5 shows the skid 8 in perspective and bottom. Visible rectangular basic shape of both the plate wear of the tabs 25, 26, and their corners are rounded. Wearing the tabs 25, 26 pass through the large portion of the total width of the lower side 17.

Wearing the tab 26 on facing the groove 29 to the side slightly cropped about half its length, so as not to interfere with the entry of the support element of the plane. Of course, wearing the tab 26 may be located remote from the groove 29. However, this would mean a greater distance from the axis of rotation, resulting in, respectively, would increase the load on the other wearing the tab 25.

1. The plane for underground mining, particularly coal plow, with case (7) of the plow, which is directed along the guide plane (4), and the plow has at least one supporting element for placing the runner (8), which has at least one formed at the bottom with the Auron (17) bearing surface, which slides in the working position of the runner (8) guide rail (6) of the guide (4) plane, characterized in that the carrier (8) on its bottom side (17), preferably in the field of higher load has at least one wear tab (25, 26).

2. The plow according to claim 1, characterized in that the carrier (8) is formed as a hinged skid that has the ability to swivel connection with the supporting member, and a rotation axis runs perpendicular to the two opposite directions (32) sliding skid (8), and thus wearing one tab (25) is provided in front of the axis of rotation, and the other wearing a tab (26) is behind the axis of rotation.

3. The plow according to claim 2, characterized in that the distance from wearing one tab (26) to the axis of rotation is approximately two times greater than the distance from wearing another tab (25) to the axis of rotation.

4. The plow according to claim 2, characterized in that the distance from both the wear tabs (25, 26) to the axis of rotation at least approximately equal.

5. The plow according to any one of claims 1 to 4, characterized in that the wear tab or tabs (25, 26) is made of hard alloy.

6. The plow according to claim 1, characterized in that the wear tab or tabs attached to the bottom side (17) of the runner (8) with the possibility of replacement.

7. The plow according to claim 6, characterized in that iznashivayetsya or tabs attached to the bottom side (17) of the runner (8) by means of a threaded connection.

8. The plow according to claim 1, characterized in that the wear tab or tabs attached to the bottom side (17) by means of soldering or welding.

9. The plow according to claim 1, characterized in that the wear tab or tabs formed in the wear plate or plates, which are inserted in the fit rectangular recess on the underside (17) of the runner (8).

10. The plow according to claim 1, characterized in that the underside (17) of the snake, at least in one area stands out, and this site takes the wear tab (25, 26) so that in this area, essentially, only this wear-intensive tab (25, 26) comes into contact with the rail (4) of the plane.

11. The plow according to claim 1, characterized in that the carrier (8) is provided with a lateral hook nozzle (21), which has a protruding and discontinuance from the guide Shoe (18) of the runner (8) shoulder (22) and forms a U-shaped opening (19) for directing a beam (20), located on the rail (4) of the plane.

12. The plane in claim 11, characterized in that the guide Shoe (18) is turned to the speaker and the shoulder (22) side has vysokopillay ledge (23).

13. The plane in claim 11, characterized in that the guide Shoe (18) has an open up the groove (29), which has the possibility of inserting the support element, and the end wall (27) of the groove made in the form of articulated about the ora, with the help of which the runner (8) forms together with the correspondingly shaped supporting element housing (7) of the plane of the swivel connection.

Priority items:

14.01.2004 according to claims 1-13.



 

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