A safety device for preventing coal from falling on a working face in a coal mine

Abstract

The application discloses a coal mine underground working face coal throwing prevention safety device, which comprises side frames, a top plate, side plates, side moving mechanisms and a driving device. Two groups of side frames are arranged, and the top plate is slidably connected to the two groups of side frames. The driving device is fixedly connected to the side frames and cooperates with the top plate, so that the driving device can drive the top plate to move up and down. The side moving mechanisms are arranged on each group of side frames, and the side plates are fixedly connected to the side moving mechanisms. The driving device cooperates with the side moving mechanisms, so that when the driving device drives the top plate to move up, the driving device drives the side moving mechanisms to work, and the side moving mechanisms drive the side plates to move outward. The application relates to the technical field of coal mine supporting devices and has the characteristics of excellent supporting effect, flexible use and convenient installation.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of coal mine supporting devices, in particular to a coal mine underground working face coal falling prevention safety device. BACKGROUND

[0002] A coal mine is an area where human beings mine coal resources in a coal-rich mining area. It is generally divided into underground coal mines and open-pit coal mines. When the coal seam is far from the ground surface, a roadway is generally excavated underground to mine coal, which is an underground coal mine. When the distance between the coal seam and the ground surface is very close, the ground surface soil layer is directly stripped to excavate coal, which is an open-pit coal mine. Most of the coal mines in China are underground coal mines. During production operation of the underground coal mine, the working face generally needs a supporting device to support the roadway, so as to avoid roadway collapse and production accidents. The current supporting device is generally manually built by multiple groups of beam frames, and the building effect is slow. To solve the above problems, the prior art also has a supporting device that supports the top of the roadway by a hydraulic support, such as the compact light top coal caving hydraulic support disclosed in the announcement CN 210152700 U. Although this type of hydraulic support has a certain supporting effect on the top of the coal roadway, the two sides of the roadway cannot be effectively supported, so that the supporting effect is poor. SUMMARY

[0003] In view of the above deficiencies in the prior art, the present application aims to provide a coal falling prevention safety device with excellent supporting effect, flexible use, and convenient installation.

[0004] The technical solution adopted by the present application to achieve the above-mentioned purpose is: a coal mine underground working face coal falling prevention safety device, comprising a side frame, a top plate, a side plate, a side shifting mechanism, and a driving device. Two groups of side frames are provided, and the top plate is slidably connected to the two groups of side frames. The driving device is fixedly connected to the side frame and cooperates with the top plate, so that the driving device can push the top plate to move up and down. Each group of side frames is provided with a side shifting mechanism, and the side plate is fixedly connected to each group of side shifting mechanisms. The driving device cooperates with the side shifting mechanism, so that when the driving device pushes the top plate to rise, the driving device drives the side shifting mechanism to work, and the side shifting mechanism drives the side plate to move outward.

[0005] In the above technical solution, the top plate member includes a load-bearing plate, a mounting table and a lifting column, the mounting table is fixedly connected to the load-bearing plate, mounting grooves are arranged on the mounting table near both ends thereof, a plurality of first mounting holes are arranged through the mounting grooves on the mounting table, the lifting column is provided in two groups, each group of the lifting column is provided with a mounting portion at the top thereof, a second mounting hole is arranged on the mounting portion, the mounting portion is slidably connected in the mounting groove, and each group of the first mounting hole corresponds to the second mounting hole, a connecting member is arranged, the connecting member penetrates the first mounting hole and the second mounting hole to fix the lifting column and the mounting table.

[0006] In the above technical solution, a groove is arranged on the side frame, the lifting column is slidably connected in the groove, the driving device is fixedly connected in the groove of the side frame, and the driving device is fixedly connected with the lifting column, so that the driving device drives the lifting column to lift and lower, thereby achieving the lifting of the load-bearing plate.

[0007] In the above technical solution, the side moving mechanism includes a lead screw, a moving member, and a sliding table, a rotating shaft is rotatably connected to the side frame, one end of the rotating shaft penetrates out of the outside and is fixedly connected with the lead screw, the other end of the rotating shaft penetrates into the groove and is fixedly connected with a gear, a rack is fixedly connected to the surface of the lifting column corresponding to the gear, the rack is meshingly connected with the gear, the moving member is threadedly connected to the lead screw, the sliding table is fixedly connected to the side frame, the side plate member is slidably connected to the sliding table, and the moving member is fixedly connected with the side plate member.

[0008] In the above technical solution, the side plate member includes an inner side plate, an outer side plate and a spring, a plurality of springs are fixedly connected to the inner side plate, the other end of the spring is fixedly connected with the outer side plate, a plurality of slide columns are fixedly connected to the outer side plate, and the slide columns penetrate through the inner side plate.

[0009] In the above technical solution, the moving member includes a threaded table and a first connecting column fixedly connected to the threaded table, and the first connecting column is fixedly connected with the inner side plate.

[0010] In the above technical solution, the connecting member includes a second connecting column and a nut, one end of the second connecting column is fixedly connected with a limiting cap, a threaded portion is arranged on the second connecting column near the other end, the second connecting column penetrates through the first mounting hole and the second mounting hole, and the nut is threadedly connected to the threaded portion.

[0011] In the above technical solution, a sliding cavity is arranged on the sliding table, a sliding block is fixedly connected to the inner side plate, and the sliding block is slidably connected in the sliding cavity.

[0012] In the above technical scheme, the lifting column is fixedly connected with a sliding bar, one side of the groove is provided with a slot, the sliding bar is slidingly connected in the slot, the bottom of the lifting column is further fixedly connected with a top block, the driving device adopts a hydraulic telescopic cylinder, and the piston end of the hydraulic telescopic cylinder is fixedly connected with the top block.

[0013] In the above technical scheme, the mounting sliding groove adopts a T-shaped structure, and the mounting portion matched therewith also adopts a T-shaped structure.

[0014] In the above technical scheme, the bottom of the side frame is fixedly connected with a base, a plurality of pin holes are arranged on the base, and the bottom of the base is fixedly connected with a cone.

[0015] Compared with the prior art, the beneficial effects of the present application are as follows: the driving device can drive the top plate to move upwards, thereby supporting the top of the coal roadway; during the upward movement of the top plate, the side moving mechanism can drive the side plate to move to both sides, thereby supporting the side wall of the coal roadway, so that the device can effectively support the inside of the coal roadway, the supporting effect is excellent, and the production accident caused by collapse can be avoided, the device adjusts the installation position of the lifting column on the mounting table, thereby adjusting the distance between the side plate and the side wall of the coal roadway, so as to meet the width of different roadways, and the device is more flexible to use, and the device is more convenient to install as a whole, thereby speeding up the work efficiency. BRIEF DESCRIPTION OF DRAWINGS

[0016] Figure 1 It is a structural schematic view of the present application;

[0017] Figure 2 It is a structural schematic view of the present application in a supporting state;

[0018] Figure 3 It is a structural schematic view of the top plate in the present application;

[0019] Figure 4 It is a structural schematic view of the side frame connecting structure in the present application;

[0020] Figure 5 It is Figure 4 a detailed structural schematic view of the a part in the present application;

[0021] Figure 6 It is a structural schematic view of the side moving mechanism in the present application.

[0022] In the figure: 1 side frame, 101 groove, 2 top plate, 201 bearing plate, 202 mounting table, 203 lifting column, 204 mounting sliding groove, 205 first mounting hole, 206 mounting part, 207 second mounting hole, 208 connecting piece, 209 second connecting column, 210 nut, 211 sliding bar, 212 top block, 3 side plate, 301 inner side plate, 302 outer side plate, 303 spring, 304 sliding column, 4 side shift mechanism, 401 lead screw, 402 moving part, 403 sliding table, 404 rotating shaft, 405 gear, 406 rack, 407 threaded table, 408 first connecting column, 409 sliding block, 5 driving device, 6 base, 7 pin hole, 8 cone. DETAILED DESCRIPTION

[0023] The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative work fall within the scope of protection of the present application.

[0024] Embodiment one

[0025] Please refer to Figure 1 -6, a coal mine underground working face anti-coal throwing safety device, including side frame 1, top plate 2, side plate 3, side shift mechanism 4 and driving device 5, side frame 1 is equipped with two groups, two groups of side frame 1 are slidingly connected with top plate 2, top plate 2 includes bearing plate 201, mounting table 202 and lifting column 203, the bottom surface of bearing plate 201 is fixedly connected with mounting table 202, mounting table 202 is equipped with T-shaped structure mounting sliding groove 204 near both ends of mounting table 202, a plurality of first mounting holes 205 are provided through mounting sliding groove 204 on mounting table 202, the distance between every two groups of first mounting holes 205 is 10-30mm, and the lifting column 203 is provided with two groups, the top of each group of lifting column 203 is provided with T-shaped structure mounting part 206, the second mounting hole 207 is provided on the mounting part 206, when the mounting part 206 is slidingly connected in the mounting sliding groove 204, a group of first mounting holes 205 correspond to the second mounting hole 207, and the connecting piece 208 is further provided, the connecting piece 208 penetrates the first mounting hole 205, the second mounting hole 207, and fixes the lifting column 203 with the mounting table 202, specifically, the connecting piece 208 here includes the second connecting column 209 and the nut 210, one end of the second connecting column 209 is fixedly connected with a limiting cap, a threaded part is provided on the second connecting column 209 near the other end, the second connecting column 209 penetrates the first mounting hole 205 and the second mounting hole 207, and the nut 210 is threadedly connected on the threaded part;

[0026] The side frame 1 is longitudinally provided with a groove 101, one side of the groove 101 is longitudinally provided with a strip slot, the lifting column 203 is longitudinally fixedly connected with a sliding strip 211, and the sliding strip 211 is slidingly connected in the strip slot. In this way, the top plate 2 can be lifted on the side frame 1. The bottom of the lifting column 203 is further fixedly connected with a top block 212. The driving device 5 adopts a hydraulic telescopic cylinder. The piston end of the hydraulic telescopic cylinder is fixedly connected with the top block 212. In this way, the lifting column 203 can be pushed to rise or fall by the hydraulic telescopic cylinder, so as to make the top bearing plate 201 rise or fall. When the bearing plate 201 rises and abuts against the top surface of the coal roadway, the top of the coal roadway can be supported. In order to ensure that the bearing plate 201 meets the different top profiles of the coal roadway, the bearing plate 201 can be designed as a plane, an arc or a special-shaped structure as needed.

[0027] The side moving mechanism 4 is further arranged on each group of side frames 1. The side moving mechanism 4 comprises a lead screw 401, a moving piece 402, a sliding table 403, a rotating shaft 404, a gear 405, a rack 406, a sliding cavity, a sliding block 409 and a first connecting column 408. The rotating shaft 404 is rotatably connected to the side frame 1. One end of the rotating shaft 404 penetrates out of the outside and is fixedly connected with the lead screw 401. The other end of the rotating shaft 404 penetrates into the groove 101 and is fixedly connected with the gear 405. The rack 406 is fixedly connected to the surface of the lifting column 203 corresponding to the gear 405. The rack 406 is in meshing connection with the gear 405. The moving piece 402 is screwedly connected to the lead screw 401. The moving piece 402 comprises a threaded table 407 and a first connecting column 408 fixedly connected to the threaded table 407. The sliding table 403 is fixedly connected to the side frame 1. The sliding table 403 is provided with a sliding cavity. The sliding block 409 is fixedly connected to the side plate 3 and slidingly connected in the sliding cavity. The first connecting column 408 of the moving piece 402 is fixedly connected with the side plate 3. In this way, when the hydraulic telescopic cylinder drives the lifting column 203 to rise, the rack 406 drives the gear 405 to rotate, and then the lead screw 401 rotates. The moving piece 402 drives the side plate 3 to move, so that the side plate 3 approaches the side wall of the coal roadway to support the side wall.

[0028] In the embodiment, the side plate 3 comprises an inner side plate 301, an outer side plate 302 and a spring 303. A plurality of springs 303 are fixedly connected to the inner side plate 301. The other end of the spring 303 is fixedly connected with the outer side plate 302. A plurality of slide columns 304 are fixedly connected to the outer side plate 302. The slide column 304 penetrates through the inner side plate 301. In this way, when the side plate 3 approaches the side wall of the coal roadway, the outer side plate 302 first abuts against the side wall. At this time, the spring 303 is compressed by a distance. If the top plate is not tightly abutted against the top of the coal roadway at this time, the spring 303 can be continuously compressed until the outer side plate 302 is tightly abutted against the side wall of the coal roadway. In this way, it can be ensured that the device has excellent supporting effect on the top and the side wall of the coal roadway.

[0029] In this embodiment, the bottom of the side frame 1 is fixedly connected with a base 6, a plurality of groups of pin holes 7 are arranged on the base 6, and a conical body 8 is fixedly connected to the bottom of the base 6. The ground nail can be driven into the ground through the pin hole 7, so that the side frame 1 is fixed to the ground, and the conical body 8 can be driven into the ground after the hydraulic telescopic cylinder drives the top plate 2 to rise and abut against the top surface of the coal roadway, so as to enhance the installation stability of the device on the ground.

[0030] In summary, the embodiment discloses a coal mine underground working face anti-coal-throwing safety device, which is mainly used for supporting the coal mining roadway. Specifically, the device is transported to a suitable position of the coal mining roadway, and then a suitable installation position of the lifting column 203 is selected according to the width of the coal mining roadway, that is, a suitable first mounting hole 205 is selected to install the lifting column 203, the hydraulic telescopic cylinder is connected with the hydraulic system, and the hydraulic telescopic cylinder is driven to extend through the hydraulic system. At this time, the hydraulic telescopic cylinder drives the lifting column 203 to rise, and then the top load-bearing plate 201 rises until the load-bearing plate 201 abuts against the top surface of the coal mining roadway to form a support. In the process of rising of the lifting column 203, the rack 406 drives the gear 405 to rotate, and then the lead screw 401 rotates. In this way, the moving part 402 drives the side plate 3 to move towards the side wall of the coal mining roadway until the side plate 3 supports the side wall of the coal mining roadway.

[0031] It is apparent for those skilled in the art that the present application is not limited to the details of the above-mentioned exemplary embodiments, but can be implemented in other concrete forms without departing from the spirit or essential characteristics of the present application. Therefore, the embodiments should be considered as exemplary and non-limiting, and the scope of the present application is defined by the appended claims rather than the above description, and all changes falling within the meaning and range of the equivalent elements of the claims are intended to be embraced in the present application. Any reference signs in the claims should not be considered as limiting the claims involved.

[0032] In addition, it should be understood that although the present specification is described in terms of embodiments, not every embodiment contains only one independent technical solution, and the description manner of the specification is only for the sake of clarity, and those skilled in the art should consider the specification as a whole, and the technical solutions in each embodiment can be properly combined to form other embodiments that those skilled in the art can understand.

Claims

1. A safety device for preventing coal falling in underground coal mine working faces, characterized in that: The device includes a side frame (1), a top plate (2), a side plate (3), a lateral shifting mechanism (4), and a driving device (5). The side frame (1) is provided in two sets, and the top plate (2) is slidably connected to the two sets of side frames (1). The driving device (5) is fixedly connected to the side frame (1). The driving device (5) cooperates with the top plate (2) so that the driving device (5) can push the top plate (2) to move up and down. Each set of side frames (1) is provided with the lateral shifting mechanism (4), and each set of lateral shifting mechanism (4) is fixedly connected to the side plate (3). The driving device (5) cooperates with the lateral shifting mechanism (4) so ​​that when the driving device (5) pushes the top plate (2) to rise, the driving device (5) drives the lateral shifting mechanism (4) to work, and the lateral shifting mechanism (4) drives the side plate (3) to move outward. The top plate component (2) includes a load-bearing plate (201), a mounting platform (202), and a lifting column (203). The mounting platform (202) is fixedly connected to the load-bearing plate (201). The mounting platform (202) has mounting grooves (204) near both ends. The mounting platform (202) has multiple sets of first mounting holes (205) passing through the mounting grooves (204). The lifting column (203) has two sets, and the top of each set of the lifting column (203) has... An installation part (206) is provided, and a second installation hole (207) is provided on the installation part (206). The installation part (206) is slidably connected in the installation groove (204), and a set of first installation holes (205) corresponds to the second installation hole (207). A connector (208) is provided, and the connector (208) passes through the first installation hole (205) and the second installation hole (207) to fix the lifting column (203) to the mounting platform (202). The side frame (1) is provided with a groove (101), and the lifting column (203) is slidably connected in the groove (101). The driving device (5) is fixedly connected in the groove (101) of the side frame (1). The driving device (5) is fixedly connected to the lifting column (203), so that the driving device (5) can lift the load-bearing plate (201) by pushing the lifting column (203) to lift. The lateral shifting mechanism (4) includes a lead screw (401), a moving part (402), and a sliding table (403). A rotating shaft (404) is rotatably connected to the side frame (1). One end of the rotating shaft (404) extends out to the outside and is fixedly connected to the lead screw (401). The other end of the rotating shaft (404) is inserted into the groove (101) and is fixedly connected to the gear (405). A rack (406) is fixedly connected to the surface of the lifting column (203) corresponding to the gear (405). The rack (406) meshes with the gear (405). The moving part (402) is threaded onto the lead screw (401). A sliding table (403) is fixedly connected to the side frame (1). The side plate (3) is slidably connected to the sliding table (403). The moving part (402) is fixedly connected to the side plate (3).

2. The safety device for preventing coal falling in underground coal mine working faces according to claim 1, characterized in that: The side plate component (3) includes an inner side plate (301), an outer side plate (302), and a spring (303). Multiple sets of the springs (303) are fixedly connected to the inner side plate (301), and the other end of the springs (303) is fixedly connected to the outer side plate (302). Multiple sets of sliding pillars (304) are fixedly connected to the outer side plate (302), and the sliding pillars (304) pass through the inner side plate (301).

3. A safety device for preventing coal falling in underground coal mine working faces according to claim 2, characterized in that: The moving part (402) includes a threaded platform (407) and a first connecting post (408) fixedly connected to the threaded platform (407), the first connecting post (408) being fixedly connected to the inner side plate (301); The connector (208) includes a second connecting post (209) and a nut (210). One end of the second connecting post (209) is fixedly connected to a limit cap. The second connecting post (209) has a threaded part near the other end. The second connecting post (209) passes through the first mounting hole (205) and the second mounting hole (207). The nut (210) is threaded onto the threaded part. The sliding stage (403) is provided with a sliding cavity, and a slider (409) is fixedly connected to the inner side plate (301). The slider (409) is slidably connected in the sliding cavity.

4. A safety device for preventing coal falling in underground coal mine working faces according to claim 3, characterized in that: A slide bar (211) is fixedly connected to the lifting column (203). A groove is provided on one side of the groove (101). The slide bar (211) is slidably connected in the groove. A top block (212) is also fixedly connected to the bottom of the lifting column (203). The driving device (5) adopts a hydraulic telescopic cylinder. The piston end of the hydraulic telescopic cylinder is fixedly connected to the top block (212).

5. A safety device for preventing coal falling in underground coal mine working faces according to claim 3, characterized in that: The mounting groove (204) adopts a T-shaped structure, and the matching mounting part (206) also adopts a T-shaped structure.

6. A safety device for preventing coal falling in underground coal mine working faces according to claim 1, characterized in that: The bottom of the side frame (1) is fixedly connected to a base (6), the base (6) is provided with multiple sets of nail holes (7), and the bottom of the base (6) is fixedly connected to a cone (8).

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