Mining tunnelling machine

FIELD: mining.

SUBSTANCE: mining tunnelling combine comprises a displacement mechanism and a boom or a frame. On the frame there are at least two rotary cutting heads and two cutting rollers. Axes of cutting heads rotation pass in direction of tunnelling or are arranged at the sharp angle relative to tunnelling direction. Two cutting rollers are installed in parallel and behind the cutting heads, and may be arranged on the foot and on the roof, accordingly. Both cutting rollers comprise end sections capable of sliding to the profile width to form a substantially rectangular profile of cutting. At the same time each cutting roller is separately hingedly connected with the boom or the frame with the possibility of height adjustment, and each cutting roller has a diameter corresponding to at least one fifth of diameter of cutting heads cutting.

EFFECT: formation of a rectangular profile of a tunnel by a mining machine, exclusion of operation to remove curved profiles, higher safety.

5 cl, 5 dwg

 

The technical field to which the invention relates

The present invention relates to mining and tunneling processor containing the mechanism of movement and arrow for cutting or frame which carries at least two rotating cutting heads, the axis of rotation of which are in the direction of penetration or form acute angles with the direction of drilling, and which together define the profile of the cutting, with the width of the profile, and two cutting rollers placed essentially parallel to and behind the cutting heads and located on the sole and on the roof, respectively.

Tunneling machines with cutting heads, the axis of rotation of which are in the direction of penetration or form acute angles with the direction of penetration, usually referred to as borax Marietta", in which the cutting block contains two or more rotating cutting heads. Two cutting heads determine the profile cutting with a maximum width of the profile, and the cutting tools are usually placed on the cutting head so that the cutting tool is one of the cutting heads are in engagement between the cutting tools of the other cutting heads during rotation so that all the corresponding profiles of cut will overlap each other. The overall profile of cutting two or more cutting heads that are positioned next to and preferably on the same level, as a rule, will correspond to the appropriate number of partially overlapping circular areas with a so-called wedge profile, remaining between the individual circular areas in the region of the sole or of the roof. The edge profile is bounded by two semicircles.

For straightening the corners of the profile, left rotating cutting means known to the cutting chain from U.S. patent 3343882, through which the profile of the sole and the profile of the roof can be partially rectified.

An alternative variant of the invention, the cutting device is known from U.S. patent 3407006 in which is provided a vertically adjustable cutting rollers mounted on the frame of the cutting device for receiving the rectified profiles soles and roof.

From U.S. patent 5921632 known edging device for drill Marietta, in which the retractable cutting roller is placed on the frame of the digging machine vertically adjustable manner to trim the soles. On the roof wedge cut cut cutting roller, mounted stationary on the frame. This device is connected to the Central drive through the gear shafts.

It is known that the use of roadheaders provides circumcision wedges profile cutting between all parts of the soles and roof using pruned devices. Also the profile turn the La will maintain its round shape in the corners of the roof. This, in particular, is extremely unfavorable in the extraction of potassium, where the increased profile of the tunnel is achieved by the fact that several parallel profiles, directly adjoin each other in the lateral direction, are performed one after the other to create the desired increased profile of the tunnel. This procedure act truncated wedges remaining when using the known roadheaders, as well as profile curves along the edges of the profile are especially annoying because they either must be removed using a separate device, or will constitute a significant risk, as the breed can be easily separated from such areas of the profile.

The present invention is directed to the creation of a digging machine, providing the driving or the formation of essentially rectangular profile of the tunnel and at the same time eliminating the above drawbacks.

To solve this problem, a continuous miner previously specified type according to the invention is essentially characterized in that the two cutting rollers include end sections that are adjustable to the width of the profile to create, essentially, a rectangular profile of the undercut. Due to the fact that both roller: upper cutting roller, i.e. one that is subject to placement on the roof, and the bottom R of the driving roller, that is, one that is subject to placement on the sole, contain retractable leaf plots, it becomes feasible to increase the working width of cut of the cutting roller to the width of the profile, certain other cutting tools, namely a rotating cutting heads. This allows, in essence, completely cut wedges cut remaining between the individual circular areas of cutting heads, so that, essentially, can be obtained rectangular profile cutting. In addition, to actually cut the corners round profile in the form of one quarter of a circle with the help of cutting rollers, extended to the full width of the profile in such a way that no doubt will have a fully rectangular profile.

At the same time performing pull-out end sections of the cutting rollers allow you to bring back the ends in such a way as to reduce the width of the cutting rollers and to facilitate the management of the tunneling machine when driving on the road.

To cut the rounded corners of the profile, with the ability to completely and reliably capture all of the wedges profile shear, it is provided according to additional preferred variant of the invention, each cutting roller has a diameter corresponding to at least one fifth, preferably at least one-fourth d is ametra cutting cutting heads. Accordingly, the large diameter of the cutting rollers ensure a particularly good approximation to the expected rectangular shape of the profile.

To provide adjustment of the size of the profile cutting to the appropriate requirement, according to an additional variant of the invention provides that the cutting head is equipped with cutting tools that are adjustable or retractable in the radial direction. This will ensure the adjustment of the size of the round profile, cut a separate rotating cutting heads. Another advantage of this configuration is that the cutting tools, for example, for increased maneuverability digging machine, can be displaced in the radial direction inside while moving back out of the tunnel shear to reduce the required space and, consequently, the risk of collisions with the walls of the tunnel or similar

To adapt the cutting rollers made according to the present invention, the sizes of the corresponding profile and, in particular, to the height profile of each cutting roller fixed hinge separately on the boom or frame with adjustable height.

Additional adaptation is achieved preferred additional variant in which the boom or frame is placed with adjustable relatively mechanism is ZMA movement in the vertical direction. This configuration will provide a simultaneous adjustment of all cutting tools, fixed or hinged to the boom or frame, so that the two rotating cutting heads and two cutting rollers are, respectively, jointly adjustable in height. Thus, it will be ensured the best adaptation of the profile with a number of options to adapt the entire profile to the respective requirements and end-use conditions, in particular in combination with the sliding in the lateral direction of the cutting rollers.

Actuation of the individual cutting tools usually provide a Central drive and the appropriate gear. Such a Central drive in the tunneling machine according to the present invention, for example, can be used to trigger at least two rotating cutting heads. However, according to additional preferred variant, the two cutting rollers are driven separately, each cutting roller contains an individual drive. This provides the best mutual adjustment of energy consumption for individual cutting tools, which is the case with Central drive, including the drive shaft. Central drives, in particular, pose a problem in that, if one of the cutting medium is in, driven by the Central drive is stalled due to a defect or other unforeseen circumstances, the drive power will be automatically distributed to the remaining cutting tools, which are often not available for such high actuating forces and, thus, can be damaged. In the case of separate drives for the cutting tools and, in particular, for the two cutting rollers such problems will not arise, because each actuator can be controlled separately.

As already noted, is the preferred configuration in which the cutting tool is placed on the cutting head so that the cutting tool is one of the cutting heads are in engagement between the cutting tools of the other cutting heads during rotation so that the annular area of the respective profiles of the cutting overlap. With such a configuration carved wedges remaining between the mutually overlapping profiles all areas will be correspondingly less to facilitate trimming.

Hereinafter the invention will be explained in more detail using the example of a variant embodiment of the invention, schematically illustrated in the drawings, which shows the following:

figure 1 is a side view of the tunnel komba is in accordance with the present invention;

figure 2 is a top view of the digging machine according to the present invention;

figure 3 is a front view of the digging machine according to the present invention;

figure 4 shows the profile cutting, produced using known digging machine;

figure 5 shows the profile cutting, obtained by digging machine according to the present invention.

Figure 1 shows the continuous miner 1 containing mechanism 2 movement. The movement mechanism 2 in this case designed as a crawler mechanism. On the boom 3 for cutting, which can be adjusted in the vertical direction, in the direction of the double arrow 4, using the appropriate Adjuster, set the cutting head 5, which are driven in rotational movement around the axis 6 of rotation.

For the cutting tool 5 is placed the cutting roller 8, which should be located on the roof 7 and the cutting roller 10 located on the sole 9. Cutting rollers 8 and 10 are attached to the rotary arm 11 or 12, respectively, which is rotatable relative to the boom 3 around the axis 13 or 14, respectively. The hydraulic cylinders 15 and 16, respectively, serve as actuators levers. Each of the two cutting rollers 8 and 10 are combined with separate actuator 17 or 18, but the but.

Figure 1 additionally shows the means of transportation, which runs in the longitudinal direction of the harvester far back as the end of the digging machine 1 and includes a rotary section delivery. Support frame 22 is connected to the frame of the harvester by means of a hydraulic cylinder 21 and able to be towed, and carries the drilling and installation of the device 23 for anchor and the corresponding support device 24.

From figure 2 it is clear that the two rotating cutting head 5 is placed near the front end of the harvester. The cutting roller 8 has a Central section 27 of the roller and two pull-out end section 25. The ends 25 are retractable in the direction of the double arrow 26 to adjust the width of cut of the cutting roller 8. The rotational actuator 17 is used for the cutting roller 8, while the Central section 27 of the cutting roller 8 is driven by a gear, not shown in detail, with pull-out end sections 25 are connected with the Central section 27 with a positive connection in a manner that protects against rotation, but offset in the direction of the axis of rotation of the cutting drum 8. Adjusting device for vertical readjustment of the boom 3 for the production of shear indicated by the position 38.

Figure 3 shows two cutting heads 5, each of which contains many cutting ant the tools and in particular, the cutting blades 28, which are adjustable in the radial direction, in the direction of the double arrow 29, to change the size of the corresponding circular profile, which must be achieved. Two cutting head 5 preferably are driven in mutually opposite directions with separate cutting tools 29, respectively, are included in engagement with each other during rotation in such a way as to create an overlap between individual round profiles, shown in figure 5. From figure 3 is additionally clear that each cutting roller 8 and 10 is a lot of cutting tools, such as, for example, of the milling cutter 30 at the Central section 27 of the roller and retractable end parts 25. As clearly seen from figure 3, the ends 25 are retractable in the direction of the double arrow 26, so that was cut out, essentially rectangular profile.

Figs.4 and 5 show the profiles of cutting, obtained according to known solutions and in accordance with the present invention, respectively. Parallel cut-outs 31 and 32 are illustrated, each with a continuous miner initially makes the cutout 31 and then the cutout 32, parallel to the preceding. Figure 4 shows two profiles 33, cut using a rotating cutting head, and a wedge 35 profile cut using a cutting device in VI is e cutting chain 34. General rectangular profile cutting, however, was not achieved with the digging machine of this type. This is why the area overlapping with the recess 31 may be covered by a subsequent cut-out 32 in such a way as to achieve a reduced overall width of the profile.

Figure 5 shows a General profile that is achieved by digging machine according to the present invention. All profiles 33 can be obtained two cutting heads 5 with a width ofandprofile. The remaining wedges 35 profile, as well as in a similar manner the remaining rounded corners 36, which in this case are cut using the cutting rollers 8 and 10, the width of which corresponds to the width of the profileandwith regard to pull-out end sections 25, thus forming a profile 37. The thus obtained rectangular overall profile. Subsequent cutout 32 may follow immediately after the first cutout 31 in such a way as to increase the efficiency of retrieval.

1. Mountain road header containing the mechanism of movement and arrow or a frame carrying at least two rotating cutting heads, the axis of rotation of which are in the direction of penetration or are at an acute angle relative to the direction of penetration and which together define the profile of the cutting, with the width of the profile, and two cutting rollers placed, essentially, the parallel and cutting heads, and capable of, located on the sole and on the roof, respectively, characterized in that the two cutting rollers (8, 10) contain the ends (25), able to run up to a width (a) profile for the formation of essentially rectangular profile cutting, each of the cutting rollers (8, 10) separately hinged arrow (3) or frame with height adjustable and each of the cutting rollers (8, 10) has a diameter corresponding to at least one fifth, preferably at least one-fourth of the diameter cutting heads (5).

2. Continuous miner according to claim 1, characterized in that the cutting head (5) provided with cutting tools (28), which are adjustable or retractable in the radial direction.

3. Continuous miner according to claim 1 or 2, characterized in that the cutting tools (28) is placed on the cutting head (5) in such a way that the cutting tools (28) one of the cutting heads (5) engages between the cutting tools (28) of the other cutting heads during rotation so that all the corresponding profiles (33) cutting overlap.

4. Continuous miner according to claim 1 or 2, characterized in that each of the cutting rollers (8, 10) contains individual actuator (17, 18).

5. Continuous miner according to claim 1 or 2, characterized in that the bolt (3) or frame is placed with an option of regulation in the vertical direction relative to mechanism (2) movement.



 

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55 cl, 22 dwg

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5 dwg

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EFFECT: providing of driving of tunnel of optimal oval shape transverse and establishing of conditions for maximum mechanisation and automation of all operating processes during tunnel building.

5 dwg

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