CN220890232U

CN220890232U - Walking type supporting device

Info

Publication number: CN220890232U
Application number: CN202322376097.3U
Authority: CN
Inventors: 游明乐; 张恒; 桑梓; 王力全; 刘德林; 王艳杰; 王一凡; 马顺顺; 刘好博; 李博阳; 肖威
Original assignee: Railway Engineering Equipment Group Tunnel Equipment Manufacturing Co Ltd
Current assignee: Railway Engineering Equipment Group Tunnel Equipment Manufacturing Co Ltd
Priority date: 2023-09-01
Filing date: 2023-09-01
Publication date: 2024-05-03
Anticipated expiration: 2033-09-01

Abstract

The utility model belongs to the technical field of stepping mine roofs and tunnel supports, and particularly provides a stepping type supporting device. The stepping type supporting device comprises an inner bracket group, an outer bracket group and a propelling device which is connected between the inner bracket group and the outer bracket group and used for propelling the inner bracket group and the outer bracket group to alternately step, wherein the outer bracket group comprises at least one first supporting module which is used for contacting the top of a tunnel or a roadway, the inner bracket group comprises at least one second supporting module which is used for contacting the top of the tunnel or the roadway, at least one of the first supporting module and the second supporting module is a telescopic supporting module, and the telescopic supporting module comprises a fixed body, a telescopic body and a telescopic device which drives the telescopic body to move in a telescopic way relative to the fixed body. The telescopic body of the telescopic support module in the utility model stretches forward to support the advance, the front end excavation part of the temporary support tunneling equipment is used for prolonging the temporary support distance of the step support device, and the problem that the step support device is difficult to support in advance is solved.

Description

Walking type supporting device

Technical Field

The utility model belongs to the technical field of stepping mine roofs and tunnel supports, and particularly relates to a stepping type supporting device.

Background

When non-full-face excavation equipment such as a cantilever heading machine or an excavating and anchoring integrated machine is constructed under unfavorable geological conditions such as crushing, caving and the like, after excavation cutting, an unsupported area at the front end of a heading face cannot be effectively supported, so that the top is easy to collapse, and the heading efficiency is severely restricted.

The patent application with publication number CN104278999A (publication date: 2015.01.14) provides a temporary support frame for stepping a fully-mechanized mining face, which comprises an inner support group and an outer support group, wherein push-pull oil cylinders are arranged on the beams of the inner support group and the outer support group, are connected between the beams of the inner support group and the beams of the outer support group, and are used for pulling the inner support group and the outer support group to step forward.

Although the temporary support bracket can realize temporary support, the support distance is limited by the length of the bracket, and advanced support is difficult to realize. For the cantilever tunneling machine or the tunneling and anchoring integrated machine, if the position of the cutting head or the cutting roller at the front end of the cantilever tunneling machine or the tunneling and anchoring integrated machine for cutting the face of the hand, effective support cannot be obtained, and serious potential safety hazards exist.

Disclosure of utility model

The utility model aims to provide a stepping type supporting device, which solves the technical problem that the stepping type supporting device in the prior art is difficult to realize advanced supporting.

In order to achieve the above purpose, the technical scheme of the walking type supporting device provided by the utility model is as follows:

The utility model provides a step-by-step support device, including interior support group, outer support group and connect the advancing device who is used for promoting the alternate step-by-step of interior support group and outer support group between interior support group and the outer support group, outer support group includes at least one first support module that is used for contacting tunnel or tunnel top, interior support group includes at least one second support module that is used for contacting tunnel or tunnel top, at least one of first support module and second support module is flexible support module, flexible support module includes the fixed body, the flexible body and drives the flexible device of the flexible relative fixed body concertina movement.

The beneficial effects are that: the utility model improves the stepping type supporting device in the prior art. When the device is used, the inner support group and the outer support group realize advancing under the action of the propelling device, the first support module and the second support module support and contact with a tunnel or a temporary support at the top of the tunnel, the telescopic body of the telescopic support module stretches forward and stretches forward to support the front end excavation part of the tunneling equipment in advance. Compared with the prior art, the temporary support distance of the walking support device is prolonged, but the whole support device is not too long, and the problem that the prior walking support device is difficult to realize advanced support is solved.

As a further improvement, the fixing body comprises an outer slide box, and the telescopic body is movably assembled inside the outer slide box.

The beneficial effects are that: the telescopic body moves in the outer sliding box, and the sliding box plays a role in guiding and limiting the telescopic body, so that the movement stability of the telescopic body is improved.

As a further improvement, the telescopic device comprises a telescopic cylinder fitted inside the outer slide case.

The beneficial effects are that: the movement of the telescopic cylinder is relatively simple, no other transmission mechanism is needed, and the control is convenient. In addition, because the outer slide box limits the telescopic body, the telescopic cylinder can not bear torque at the moment, and the stress of the telescopic cylinder is improved.

As a further improvement, the inner bracket group or the outer bracket group is provided with a net hanging structure for hanging the anchor net roll, and the telescopic body is provided with a supporting part for supporting the anchor net.

The beneficial effects are that: the anchor net is laid in an integrated manner by advanced support and automatic laying, and the telescopic body is beneficial to the laying of the anchor net, so that the support efficiency is improved.

As a further improvement, the net hanging structure is arranged at the other end opposite to the telescopic body.

The beneficial effects are that: at this time, the anchor net can be unfolded for a longer length, so that the telescopic body can be conveniently ejected out of the anchor net. In addition, the anchor net roll can also play a role of a counterweight, and the weight of the advanced extension part of the telescopic support module is balanced.

As a further development, the inner and outer support groups each comprise a cross beam provided with a roller shaft for supporting the anchor net.

The beneficial effects are that: the roll shaft forms a support for the anchor net, so that stability of the anchor net during unfolding and laying is improved.

As a further improvement, the supporting part comprises a guide idler roller arranged on the telescopic body.

The beneficial effects are that: the guide carrier roller has the redirection guiding function to the anchor net, and the anchor net of being convenient for is redirected to the support module top, has further promoted the support efficiency of anchor net.

As a further improvement, the inner bracket group and the outer bracket group both comprise a base and a cross beam, a guide sliding box is arranged on the base, the guide sliding box comprises a sliding frame, a lifting oil cylinder is arranged between the sliding frame and the base, and the cross beam is arranged on the sliding frame.

The beneficial effects are that: the crossbeam has better stability through direction slide box and base cooperation, and lift cylinder does not receive the load of overturning for the whole support device has better stability, more is fit for being used for tunnel or tunnel support under the adverse circumstances.

As a further improvement, a side wall supporting mechanism is arranged on the sliding frame of the outer bracket group, and comprises a side wall oil cylinder and a side sub-strut boot.

The beneficial effects are that: the side sub-strut boots extend out to support the side wall of the tunnel or tunnel, so as to prevent the ledge phenomenon of broken rock stratum. In addition, the whole direction of the support device can be adjusted by controlling different expansion and contraction amounts of the side wall support mechanism.

As a further improvement, the propelling device comprises a telescopic cylinder, and two ends of the telescopic cylinder are respectively hinged with the cross beams of the inner bracket group and the outer bracket group.

The beneficial effects are that: the mounting position of the telescopic cylinder is nearer to the support module, so that the stability of the stepping motion of the support module is improved.

Drawings

FIG. 1 is a schematic view of an embodiment 1 of a walking support device according to the present utility model;

FIG. 2 is a central cross-sectional view of an embodiment 1 of a walking support device of the present utility model;

FIG. 3 is a schematic view of an embodiment 1 of a walking support device in an advanced support state of a telescopic support module according to the present utility model;

FIG. 4 is a schematic view of an embodiment 1 of a walking support device of the present utility model in a top-supported anchor net state;

Fig. 5 is a schematic view of an embodiment 1 of a walking support device of the present utility model in another view of the top anchor mesh state.

Reference numerals illustrate:

1. A first support module; 2. a second support module; 3. a side sub-strut boot; 4. a base; 5. a first lift cylinder; 6. a second lifting cylinder; 7. a side wall oil cylinder; 8. a telescopic body; 9. an outer slide case; 10. a second cross beam; 11. a first cross beam; 12. a roll shaft; 13. a carriage; 14. a guide slide box; 15. a net hanging device; 16. a telescopic oil cylinder; 17. a thrust cylinder; 18. a guide idler; 19. a link mechanism; 20. anchoring the net rolls; 21. an anchor net.

Detailed Description

In order to solve the problem that the existing step-by-step supporting device is difficult to realize advanced supporting, the core technical concept of the utility model is to improve the supporting module of the step-by-step supporting device for supporting the tunnel or the top of the roadway into a telescopic supporting module, and when the step-by-step supporting device is used, the telescopic body of the telescopic supporting module extends forwards to extend the supporting distance forwards, so that the step-by-step supporting device can be supported to the position of the excavation face of the tunneling equipment, and the safety of construction operation is improved.

The present utility model is described in further detail below with reference to examples.

Specific example 1 of a walking support device provided by the utility model:

The embodiment aims at providing a walking type supporting device which combines advanced supporting and automatic anchor net laying. As shown in fig. 1-3, the embodiment includes an outer bracket set and an inner bracket set disposed in the outer bracket set, where the inner bracket set and the outer bracket set each include a support module, a base, a lifting cylinder, and a beam, and the beam can drive the support module to lift under the action of the lifting cylinder. A propulsion device is connected between the inner bracket group and the outer bracket group, and under the action of the propulsion device, the inner bracket group and the outer bracket group can realize alternate stepping forward.

Specifically, the outer bracket set in this embodiment includes a base 4, a guide slide box 14 is provided on the base 4, the guide slide box 14 includes a guide body fixed on the base 4 and a sliding frame 13 sliding along the guide body, a first lifting cylinder 5 for pushing the sliding frame 13 to lift up and down is provided between the sliding frame 13 and the base 4, and the first lifting cylinders 5 are respectively arranged in front of and behind each other, a first cross beam 11 is provided on the sliding frame 13, and three groups of first support modules 1 are provided on the first cross beam 11.

The inner bracket set in this embodiment also includes a base 4, a guide slide box 14 is disposed on the base 4, the guide slide box 14 includes a guide body fixed on the base 4 and a sliding frame 13 sliding along the guide body, a second lifting cylinder 6 pushing the sliding frame 13 to lift up and down is disposed between the sliding frame 13 and the base 4, and the second lifting cylinders 6 are disposed in front of and behind each other, a second cross beam 10 is disposed on the sliding frame 13, and two sets of second support modules 2 are disposed on the second cross beam 10.

Under the guiding action of the guiding slide box 14, the first support module 1 and the second support module 2 in the embodiment have better stability in moving up and down, and can provide more stable support for temporary support of a tunnel or a roadway.

A propulsion cylinder 17 is hinged between the first beam 11 and the second beam 10, i.e. the propulsion device which plays a role in advancing the walking propulsion supporting device in the embodiment is the propulsion cylinder 17, so that the stability is better.

The first support module 1 and the second support module 2 in this embodiment are both telescopic support modules. The telescopic support module comprises a fixed body and a telescopic body, and a telescopic device for pushing the telescopic body to stretch back and forth is connected between the fixed body and the telescopic body. Therefore, when the tunneling equipment is matched for tunneling, the telescopic body can extend forwards, and advanced support is realized.

Specifically, the fixed body comprises an outer slide box 9, and the telescopic body 8 is movably assembled in the outer slide box 9, wherein the movable assembly comprises two forms of sliding and rolling. When the telescopic body 8 moves in a telescopic way, the outer slide box 9 can play a stable limiting and guiding role, and the movement stability of the telescopic body 8 is improved.

Further, the telescopic device in the embodiment comprises the telescopic oil cylinder 16, and the telescopic oil cylinder 16 is also arranged in the outer slide box 9, so that the telescopic oil cylinder 16 does not bear torque in the telescopic movement process, the stress of the telescopic oil cylinder 16 is improved, and the telescopic oil cylinder 16 has better reliability. Of course, in other embodiments, the telescopic cylinder 16 may be replaced with other telescopic cylinders such as an electric push rod or a cylinder.

The carriage 13 on the left and right sides of the outer side bracket group (the extending and contracting direction of the extending and contracting oil cylinder 16 is defined as the front and rear direction) is also connected with a side wall supporting mechanism, the side wall supporting mechanism comprises a side wall oil cylinder 7 and a side sub-strut boot 3, the side wall oil cylinder 7 and the side sub-strut boot 3 are in transmission connection through a connecting rod mechanism 19, and the side wall oil cylinder 7 pushes the side sub-strut boot 3 to open outwards to tighten the side wall of a tunnel or a roadway. On the one hand, the side wall of the tunnel or the roadway can be supported, and the ledge phenomenon of broken rock strata is prevented. In addition, the whole direction of the support device can be adjusted by controlling different expansion and contraction amounts of the side wall support mechanism.

The specific working process of the embodiment is as follows:

The piston rod of the second lifting oil cylinder 6 contracts to drive the second support module 2 to drop on the first cross beam 11 along with the second cross beam 10 falling off from the top, and the base 4 retracts, so that the inner bracket group is in a suspended state; controlling the pushing oil cylinder (17) to extend out of the step distance to drive the second support module 2 to move forwards by one step distance; the second lifting cylinder 6 extends out, and the base 4 and the second support module 2 are respectively supported on the ground and the top; the first lifting oil cylinder 5 contracts to drive the first support module 1 to drop on the second cross beam 10 after being separated from the top, the base 4 continues to retract, the side wall oil cylinder 7 of the side wall support mechanism contracts, the side wall support boot 3 retracts, and the outer support group is in a suspended state; the pushing oil cylinder 17 is controlled to shrink by one step distance, and the outer bracket group is driven to move forwards by one step distance; the first lifting oil cylinder 5 is controlled to extend, the base 4 and the first supporting module 1 extend and support on the ground and the top respectively, the side wall oil cylinder 7 extends to drive the side sub-strut boot 3 to extend to prevent the wall forming phenomenon of broken rock stratum, and at the moment, the first supporting module 1 and the second supporting module 2 still support simultaneously. The telescopic cylinders 16 in the first support module 1 and the second support module 2 extend out, and the telescopic bodies 8 in the telescopic support modules extend out to perform advanced support.

The present embodiment is further provided with a net hanging device 15, and the net hanging device 15 may be disposed in the inner bracket set or the outer bracket set, so that the automatic laying of the anchor net 21 can be realized. The net hanging device can be a hook, a hanging hole, a hanging shaft and the like, and can realize the hanging of the anchor net roll 20. During the advancing of the support device and the advance support, the telescopic body 8 can drive the anchor net 21 to be unfolded, i.e. the telescopic body 8 should have a supporting part for supporting the anchor net, thus realizing automatic laying of the anchor net, as shown in fig. 4 and 5.

Specifically, the net hanging device 15 is disposed at the other end (rear end) opposite to the telescopic body 8, so that the anchor net 21 can be extended outwards for a longer length, the telescopic body 8 can be conveniently ejected outwards, and the anchor net supporting efficiency is improved.

In order to enhance the supporting effect on the anchor net 21, the first beam 11 and the second beam 10 are provided with the roll shafts 12 in the present embodiment, and the anchor net can be continuously supported by the roll shafts 12 in the process of being outwards opened.

In addition, in order to facilitate the anchor net 21 to smoothly bypass the top of the supporting device, in this embodiment, as shown in fig. 3, the telescopic body 8 is further provided with a guide roller 18, the guide roller 18 forms a top supporting portion of the telescopic body 8, and under the action of the guide roller 18, the anchor net 21 is easy to bend and redirect.

The specific embodiment 2 of the step support device provided by the utility model is mainly different from the embodiment 1 in that: an object of the present embodiment is to provide a telescopic support module of another form. Specifically, the support module in this embodiment includes the fixed body and the flexible body, and the fixed body is equipped with the spout, and flexible body is movable in the spout to telescoping device fixes in the outside of flexible body and fixed body.

The specific embodiment 3 of the step support device provided by the utility model is mainly different from the embodiment 1 in that: it is an object of this embodiment to provide a telescopic device of other forms. Specifically, the telescopic device in this embodiment may be a screw nut mechanism or a rack and pinion mechanism, and taking the rack and pinion mechanism as an example, the rack that moves in a straight line may be regarded as a telescopic body or the rack is connected with the telescopic body to drive the telescopic body to move.

The specific embodiment 4 of the step support device provided by the utility model is mainly different from the embodiment 1 in that: the aim of the embodiment is to provide a support device without a net hanging device. Specifically, the embodiment does not include a net hanging device, namely, automatic laying of the anchor net rolls cannot be realized, but advanced support can still be realized due to the telescopic support module.

The specific embodiment 5 of the step support device provided by the utility model is mainly different from the embodiment 1 in that: the aim of the embodiment is to provide a supporting device with a net hanging device arranged at other positions. Specifically, the net hanging device in this embodiment is disposed at the front end, that is, the same end as the telescopic body, and at this time, the telescopic body extends outwards to support the anchor net and drive the anchor net roll to be unfolded.

The specific embodiment 6 of the step support device provided by the utility model is mainly different from the embodiment 1 in that: in this embodiment, the first support module and the second support module both include 1, and only the first support module is a telescopic support module, but at this time, the first support module can also play a role in advanced support during operation.

The specific embodiment 7 of the step support device provided by the utility model is mainly different from the embodiment 1 in that: the aim of the embodiment is to provide a supporting device with a propulsion device connected at other positions. In particular, the propulsion device in this embodiment is connected between the bases of the inner bracket set and the outer bracket set, but the propulsion device in embodiment 1 is mounted closer to the support module, and theoretically, the stability is better when pushing the inner bracket set or the outer bracket set to move.

The specific embodiment 8 of the step support device provided by the utility model is mainly different from the embodiment 1 in that: the aim of the embodiment is to provide a support device without a side wall support mechanism. Specifically, in this embodiment, the left and right sides of the outer bracket set are not provided with side wall supporting mechanisms, so that the top advanced supporting of the telescopic supporting module is not affected.

It should be noted that the above-mentioned embodiments are merely preferred embodiments of the present utility model, and the present utility model is not limited to the above-mentioned embodiments, but may be modified without inventive effort or equivalent substitution of some of the technical features thereof by those skilled in the art. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present utility model should be included in the protection scope of the present utility model.

Claims

1. The utility model provides a step-by-step support device, including interior support group, outer support group and connect the advancing device who is used for promoting the alternate step-by-step of interior support group and outer support group between interior support group and the outer support group, outer support group includes at least one first support module that is used for contacting tunnel or tunnel top, interior support group includes at least one second support module that is used for contacting tunnel or tunnel top, its characterized in that, at least one of first support module and second support module is flexible support module, flexible support module includes the fixed body, the flexible body and drives the flexible device of the flexible relative fixed body telescopic motion.

2. The swing support of claim 1, wherein the stationary body comprises an outer slide box, and the telescoping body is movably mounted within the outer slide box.

3. The swing support of claim 2, wherein the telescoping device includes a telescoping cylinder that fits inside the outer slide box.

4. A walking support device according to claim 1, 2 or 3, wherein the inner or outer set of brackets is provided with a netting structure for suspending the anchor net roll, and the telescopic body is provided with a jacking portion for jacking the anchor net.

5. The swing support of claim 4, wherein said netting structure is disposed at the opposite end from said telescoping body.

6. The swing support of claim 5, wherein the inner and outer sets of brackets each include a cross beam having rollers for supporting the anchor net.

7. The swing support of claim 4, wherein the jacking portion comprises a guide idler disposed on the telescoping body.

8. A walking support device according to claim 1, 2 or 3, wherein the inner and outer support groups each comprise a base and a cross beam, the base is provided with a guide slide box, the guide slide box comprises a carriage, a lifting cylinder is arranged between the carriage and the base, and the cross beam is arranged on the carriage.

9. The swing support of claim 8, wherein the carriage of the outer frame set is provided with a side wall support mechanism comprising a side wall cylinder and a side sub-strut boot.

10. The swing support of claim 8, wherein said propulsion means comprises a telescoping cylinder having ends hinged to the cross members of the inner and outer sets of brackets, respectively.