Supporting device of coal mining machine for mining steeply inclined coal seam

By designing a support device consisting of a base plate, connecting columns, and clamping components, the problem of inconvenient placement and transportation of coal mining machines in steeply inclined coal seam mining was solved, improving work efficiency and safety, and adapting to different models of coal mining machines.

CN223594176UActive Publication Date: 2025-11-25KUNMING COAL DESIGN & RES INST CO LTD
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Patent Information

Application Number
CN202422758485.2
Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
Filing Date
2024-11-13
Publication Date
2025-11-25
Estimated Expiration
2034-11-13

AI Technical Summary

Technical Problem

Existing coal mining machine support devices are cumbersome to operate in steeply inclined coal seam mining, and are difficult to place and transport conveniently, affecting work efficiency and safety.

Method used

A support device comprising a base plate, a first connecting column, a support assembly, and a clamping assembly is designed. By adjusting the height of the base plate and the position of the clamping assembly, it provides stable support and flexible adjustment to adapt to different specifications and models of coal mining machines.

Benefits of technology

It improves the working stability and safety of coal mining machines, reduces the difficulty of handling, reduces downtime and failures, and ensures the safety of operators.

✦ Generated by Eureka AI based on patent content.

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Abstract

The utility model provides a supporting device of a coal mining machine for mining a steeply inclined coal seam, which belongs to the technical field of coal mining and comprises a bottom plate, a first connecting column and a supporting component, the bottom plate is of a square structure, the coal mining machine is placed on the bottom plate, and the supporting component is arranged on the bottom plate. The size of the coal mining machine is larger than that of the bottom plate, the first connecting columns are arranged on the left side and the right side of the bottom plate, penetrate through the side wall of the bottom plate and are slidably connected with the bottom plate, the supporting assembly is fixedly connected to the lower portion of the bottom plate, and the supporting assembly is used for adjusting the placement height of the coal mining machine. A clamping assembly is slidably connected to the first connecting column and used for clamping the coal mining machine on the bottom plate. According to the utility model, the coal mining machine can be conveniently placed and carried.
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Description

TECHNICAL FIELD

[0001] The utility model belongs to coal mining technical field, concretely relates to a kind of support device for steeply inclined coal seam mining with coal mining machine. BACKGROUND

[0002] Steeply inclined coal seam refers to the coal seam with large inclination angle, usually more than 30 degrees. It is necessary to maintain the stable state of the coal mining machine during mining. The application number CN202021019880.4 (publication number: CN212454409U) provides a coal mining machine support device for coal mining, which includes a support plate, a bottom side pressure plate, a top side pressure plate, and a coal mining machine main body on the support plate. Four groups of support rods are protruding downward from the bottom end face of the support plate. Four groups of rectangular arrayed sliding grooves are opened at the four corners of the upper end face of the support plate. Two groups of horizontal cross beams are fixedly connected between the two groups of support rods on the same side. Two groups of symmetrically arranged electric push rods are embeddedly installed in the two groups of cross beams. The bottom side pressure plate is fixed to the piston rod of the electric push rod. The coal mining machine main body is placed in the middle position of the support plate, and a group of sliding plates is installed on the two groups of sliding grooves on both sides of the coal mining machine main body.

[0003] The area of the support plate in the above-mentioned scheme is large, which can provide good support for the coal mining machine, but it is not convenient to move the coal mining machine before and after use. After the coal mining machine is placed on the support plate, it can only be adjusted in angle by pushing it to be placed in the center. When disassembling, the coal mining machine needs to be pushed to the edge of the support plate, then separated from the edge of the support plate, and finally moved. The operation is complicated and inconvenient. UTILITY MODEL CONTENTS

[0004] Therefore, the utility model provides a support device for steeply inclined coal seam mining with coal mining machine, which can conveniently place and move the coal mining machine.

[0005] The utility model is implemented as follows:

[0006] The utility model provides a support device for steeply inclined coal seam mining with coal mining machine, which includes a bottom plate, a first connecting column and a support assembly. The bottom plate is a square structure. A coal mining machine is placed on the bottom plate. The size of the coal mining machine is larger than that of the bottom plate. The first connecting column is arranged on the left and right sides of the bottom plate. The first connecting column penetrates the side wall of the bottom plate and is slidingly connected with the bottom plate. The support assembly is fixedly connected below the bottom plate. The support assembly is used to adjust the placement height of the coal mining machine. A clamping assembly is slidingly connected on the first connecting column. The clamping assembly is used to clamp the coal mining machine on the bottom plate.

[0007] The technical effects of the supporting device for the coal mining machine used in the steeply inclined coal seam mining are as follows: the bottom plate is arranged, a stable foundation is provided, the inclination and shaking of the coal mining machine are reduced, safe operation is ensured, the size of the bottom plate is smaller than that of the coal mining machine, the coal mining machine is more convenient to move, and the carrying difficulty is reduced.The stable bottom plate helps to improve the working efficiency of the coal mining machine, reduces the failure and downtime, the supporting assembly is arranged, the distance between the bottom plate and the ground can be flexibly adjusted to adapt to different working requirements, the clamping assembly is arranged, better support is provided, the coal mining machine is kept stable during the working process, vibration and displacement are reduced, the coal mining machine can be effectively prevented from sliding accidentally during operation, the accident risk is reduced, and the safety of the operator is protected, the first connecting column is arranged, the position of the clamping assembly can be flexibly adjusted, and the coal mining machine of different specifications and models is clamped.

[0008] On the basis of the above technical scheme, the supporting device for the coal mining machine used in the steeply inclined coal seam mining can be further improved as follows:

[0009] The bottom plate comprises a plate body, a first side plate and a second side plate, the size of the plate body is smaller than that of the coal mining machine, the first side plate and the second side plate penetrate through two side walls of the plate body and are slidably connected with the plate body, the first side plate is located above the second side plate, the sizes of the first side plate and the second side plate are smaller than that of the plate body, a magnetic coating is coated on the upper top surface of the first side plate and the second side plate, and the upper surface of the plate body is a rough surface.

[0010] The beneficial effects of the above improved scheme are that the upper surface of the plate body is a rough surface, greater friction can be provided, the coal mining machine is not easy to slide or move during the operation process, and the stability is improved. The first side plate and the second side plate are combined with the first pad and the second pad, the overall size of the bottom plate can be enlarged, and the work of the coal mining machine is more stable.

[0011] Further, the supporting assembly comprises an inner cylinder, an outer cylinder, a foot pad and a through hole, the outer cylinder is sleeved outside the inner cylinder, the inner cylinder is slidably connected with the outer cylinder, the lower bottom surface of the outer cylinder is fixedly connected with the foot pad, the surfaces of the inner cylinder and the outer cylinder are provided with the through hole, and the inner cylinder and the outer cylinder are fixed through the through hole by bolts.

[0012] Further, the inner cylinder is of an obtuse angle structure, and the lower bottom surface of the inner cylinder is fixedly connected with the plate body.

[0013] The beneficial effects of the above improved scheme are that the shape of the inner cylinder provides a ground support area larger than the plate body for the outer cylinder, so that the supporting assembly can more stably support the bottom plate and the work of the coal mining machine.

[0014] Further, a plurality of through holes are uniformly arranged on the first connecting column, and the through holes are arranged on the side wall of the plate body, and the through holes on the side wall of the plate body and the through holes on the first connecting column are fixed by bolts to fix the plate body and the first connecting column.

[0015] Further, a receiving frame is clamped on the lower bottom surface of the plate body, and the receiving frame is internally provided with a first pad plate and a second pad plate, the thickness of the first pad plate is the same as the distance from the upper top surface of the first side plate to the upper top surface of the plate body, the thickness of the second pad plate is the same as the distance from the upper top surface of the second side plate to the upper top surface of the plate body, and the upper surfaces of the first pad plate and the second pad plate are smooth surfaces.

[0016] The beneficial effects of the above improvement scheme are that the upper surfaces of the first pad plate and the second pad plate are smooth surfaces, which can facilitate the extraction of the first pad plate and the second pad plate, reduce the overall area of the bottom plate, and facilitate the transportation of the coal mining machine.

[0017] Further, the four corners of the lower bottom surface of the first pad plate and the second pad plate are coated with a metal coating, and the side wall of the first pad plate and the second pad plate is fixed with a pull rope.

[0018] Further, the clamping assembly comprises a main clamping plate, a vice clamping plate and a positioning hole, the first connecting column penetrates the main clamping plate and is in sliding connection with the main clamping plate, the two sides of the main clamping plate are provided with a vice clamping plate, the second connecting column penetrates the side wall of the main clamping plate and is in sliding connection with the main clamping plate, the second connecting column penetrates the vice clamping plate and is in sliding connection with the vice clamping plate, and the included angle between the main clamping plate and the vice clamping plate is a right angle.

[0019] Further, a plurality of through holes are uniformly arranged on the second connecting column, and the main clamping plate is provided with the positioning hole, and the position of the second connecting column is fixed by the through holes and the positioning hole penetrated by the bolts, and another bolt penetrates the through holes on the second connecting column to limit the position of the vice clamping plate.

[0020] Further, the main clamping plate and the vice clamping plate are both double-layer structures, and the double-layer structures are internally provided with strong springs, and the main clamping plate is a trapezoidal structure.

[0021] Compared with the prior art, the support device for the coal mining machine used in the steeply inclined coal seam has the beneficial effects that: the bottom plate is arranged to provide a stable foundation, reduce the inclination and shaking of the coal mining machine, and ensure safe operation, wherein the size of the bottom plate is smaller than the coal mining machine, so that the coal mining machine is more convenient to move, and the difficulty of carrying is reduced. The stable bottom plate helps to improve the working efficiency of the coal mining machine, reduce the failure and downtime. The support assembly is arranged to flexibly adjust the distance between the bottom plate and the ground to adapt to different working requirements. The clamping assembly is arranged to provide better support, ensure the stability of the coal mining machine during operation, reduce vibration and displacement, effectively prevent the coal mining machine from sliding accidentally during operation, reduce the risk of accidents, and protect the safety of the operator. The first connecting column is arranged to flexibly adjust the position of the clamping assembly, and facilitate clamping of coal mining machines of different specifications. BRIEF DESCRIPTION OF DRAWINGS

[0022] In order to more clearly illustrate the technical scheme of the embodiments of the present application, the following will briefly introduce the drawings needed to be used in the description of the embodiments of the present application. Obviously, the drawings in the following description are only some embodiments of the present application, and other drawings can also be obtained according to these drawings without creative labor for those skilled in the art.

[0023] Fig. 1 It is a front view of a support device for a coal mining machine used in a steeply inclined coal seam.

[0024] Fig. 2 It is a rear view of a bottom plate of a support device for a coal mining machine used in a steeply inclined coal seam.

[0025] Fig. 3 It is a top view of a bottom plate of a support device for a coal mining machine used in a steeply inclined coal seam.

[0026] In the drawings, the components represented by each reference numeral are listed as follows:

[0027] 10, bottom plate; 101, plate body; 102, first side plate; 103, second side plate; 11, first connecting column; 12, support assembly; 121, inner cylinder; 122, outer cylinder; 123, foot pad; 124, through hole; 13, magnetic coating; 14, through hole; 15, receiving frame; 16, first pad; 17, second pad; 18, clamping assembly; 181, main clamping plate; 182, auxiliary clamping plate; 183, positioning hole; 19, second connecting column. DETAILED DESCRIPTION

[0028] In order to make the purpose, technical scheme and advantages of the utility model embodiment clearer, the technical scheme in the utility model embodiment will be clearly and completely described below in combination with the drawings in the utility model embodiment.

[0029] As Figs. 1-3 shown, it is an embodiment of the support device of the coal mining machine for steeply inclined coal seam mining provided by the utility model, in the embodiment, including bottom plate 10, first connecting column 11 and support assembly 12, bottom plate 10 is square structure, the coal mining machine is placed on bottom plate 10, the size of the coal mining machine is greater than the size of bottom plate 10, the left and right sides of bottom plate 10 are all provided with first connecting column 11, first connecting column 11 penetrates the side wall of bottom plate 10 and is slidably connected with bottom plate 10, support assembly 12 is fixedly connected below bottom plate 10, support assembly 12 is used for adjusting the placing height of the coal mining machine, clamping assembly 18 is slidably connected on first connecting column 11, clamping assembly 18 is used for clamping the coal mining machine on bottom plate 10.

[0030] The model of the coal mining machine is selected to be greater than the plate body 101, and the size ratio of the bottom surface of the coal mining machine to the size of the plate body 101 is 1.5-2:1.

[0031] The first side plate 102 and the second side plate 103 can pull out the size of the outside of the plate body 101 to account for 2 / 3 of the total size, and the part not pulled out is blocked by the sliding block inside the first side plate 102 and the second side plate 103.

[0032] In the above technical scheme, the bottom plate 10 includes the plate body 101, the first side plate 102 and the second side plate 103, the size of the plate body 101 is less than the size of the coal mining machine, the first side plate 102 and the second side plate 103 penetrate the two side walls of the plate body 101 and are slidably connected with the plate body 101, the first side plate 102 is located above the second side plate 103, the size of the first side plate 102 and the second side plate 103 is less than the size of the plate body 101, the upper top surface of the first side plate 102 and the second side plate 103 is coated with a magnetic coating 13, and the upper surface of the plate body 101 is a rough surface.

[0033] Further, in the above technical scheme, the support assembly 12 includes an inner cylinder 121, an outer cylinder 122, a foot pad 123 and a through hole 124, the outer cylinder 122 is sleeved outside the inner cylinder 121, the inner cylinder 121 is slidably connected with the outer cylinder 122, the lower bottom surface of the outer cylinder 122 is fixedly connected with the foot pad 123, the surfaces of the inner cylinder 121 and the outer cylinder 122 are both provided with the through hole 124, and the inner cylinder 121 and the outer cylinder 122 are fixed by penetrating the through hole 124 through bolts.

[0034] Further, in the above technical scheme, the inner cylinder 121 is an obtuse angle structure, and the inner cylinder 121 is fixedly connected with the lower bottom surface of the plate body 101.

[0035] Further, in the above technical solution, the first connecting column 11 is uniformly provided with a plurality of through holes 14, the side wall of the plate body 101 is provided with a through hole 14, and the bolt penetrates the through hole 14 on the side wall of the plate body 101 and the through hole 14 on the first connecting column 11 to fix the plate body 101 and the first connecting column 11.

[0036] Further, in the above technical solution, the lower bottom surface of the plate body 101 is clamped with a receiving frame 15, the receiving frame 15 is internally provided with a first pad 16 and a second pad 17, the thickness of the first pad 16 is the same as the distance from the upper top surface of the first side plate 102 to the upper top surface of the plate body 101, the thickness of the second pad 17 is the same as the distance from the upper top surface of the second side plate 103 to the upper top surface of the plate body 101, and the upper surfaces of the first pad 16 and the second pad 17 are smooth surfaces.

[0037] Further, in the above technical solution, the lower bottom surface of the first pad 16 and the second pad 17 is coated with a metal coating, and the side wall of the first pad 16 and the second pad 17 is fixed with a pull rope.

[0038] The range of the magnetic coating 13 is larger than the range of the metal coating.

[0039] Further, in the above technical solution, the clamping assembly 18 includes a main clamping plate 181, a secondary clamping plate 182, and a positioning hole 183, the first connecting column 11 penetrates the main clamping plate 181 and is in sliding connection with the main clamping plate 181, the two sides of the main clamping plate 181 are provided with the secondary clamping plate 182, the second connecting column 19 penetrates the side wall of the main clamping plate 181 and is in sliding connection with the main clamping plate 181, the second connecting column 19 penetrates the secondary clamping plate 182 and is in sliding connection with the secondary clamping plate 182, and the included angle between the main clamping plate 181 and the secondary clamping plate 182 is a right angle.

[0040] Further, in the above technical solution, the second connecting column 19 is uniformly provided with a plurality of through holes 14, the main clamping plate 181 is provided with a positioning hole 183, a bolt penetrates the positioning hole 183 and the through hole 14 on the second connecting column 19 to fix the position of the second connecting column 19, and another bolt penetrates the through hole 14 on the second connecting column 19 to limit the position of the secondary clamping plate 182.

[0041] The clamping assembly 18 and the second connecting column 19 are the same in structure.

[0042] Further, in the above technical solution, the main clamping plate 181 and the secondary clamping plate 182 are both double-layer structures, the double-layer structures are internally provided with strong springs, and the main clamping plate 181 is a trapezoidal structure.

[0043] When in use, the whole supporting device is placed in the proper position and the supporting assembly 12 is adjusted so that the bottom plate 10 is at the proper height, the small coal mining machine is carried onto the plate body 101, since the size of the coal mining machine is larger than the plate body 101, the coal mining machine is easily placed, when carrying and adjusting the position, the hand can be placed under the coal mining machine to carry and adjust the position of the coal mining machine so as to make the midpoint of the coal mining machine align with the midpoint of the plate body 101. The first side plate 102 and the second side plate 103 are pulled out and the corresponding first pad plate 16 and the second pad plate 17 are taken out from the storage frame 15 and are slid between the coal mining machine and the corresponding first side plate 102 and the second side plate 103. The side of the first side plate 102 and the second side plate 103 which is in contact with the first pad plate 16 and the second pad plate 17 will generate mutual attraction force, which avoids the first pad plate 16 and the second pad plate 17 from sliding out accidentally when the coal mining machine is working. The length of the first connecting column 11 is adjusted, the bolt is inserted through the through hole 14 on the side wall of the plate body 101 and is inserted into the through hole 14 on the first connecting column 11 to fix the first connecting column 11, which avoids the sliding of the first connecting column 11. The main clamping plate 181 is slid so that the main clamping plate 181 clamps the coal mining machine from both sides, the bolt is inserted into the through hole 14 on the first connecting column 11 to resist the main clamping plate 181 and avoid the movement of the main clamping plate 181. The position of the auxiliary clamping plate 182 on the second connecting column 19 is adjusted, the bolt is inserted through the positioning hole 183 to fix the length of the second connecting column 19, another bolt is directly inserted through the through hole 14 on the second connecting column 19 to limit the position of the auxiliary clamping plate 182, so that the main clamping plate 181 and the auxiliary clamping plate 182 clamp the coal mining machine at the same time.

[0044] When the use is finished, the bolts in each position are unloaded in sequence, the first pad plate 16 and the second pad plate 17 are taken out from the bottom of the coal mining machine, and the coal mining machine can be directly carried from top to bottom.

[0045] Specific, the principle of the utility model is: when using, the whole support device is placed in proper position and the support assembly 12 is adjusted to make the bottom plate 10 be in proper height, the small coal mining machine is carried to the plate body 101, because the size of the coal mining machine is greater than the plate body 101, so the coal mining machine is conveniently placed, when carrying and adjusting position, the hand can be placed under the coal mining machine to carry and adjust the position of the coal mining machine to make the midpoint of the coal mining machine and the midpoint of the plate body 101 align as far as possible. The first side plate 102 and the second side plate 103 are pulled out and the corresponding first gusset plate 16 and the second gusset plate 17 are taken out from the storage frame 15 and are slid to the coal mining machine and the corresponding first side plate 102 and the second side plate 103. The side of the first side plate 102, the second side plate 103 and the first gusset plate 16, the second gusset plate 17 contact will generate mutual attraction, avoid the first gusset plate 16 and the second gusset plate 17 accidentally slip out when the coal mining machine works. The length of the first connecting column 11 is adjusted, the bolt is inserted through the through hole 14 on the side wall of the plate body 101 and is inserted into the through hole 14 on the first connecting column 11 to fix the first connecting column 11, avoid the sliding of the first connecting column 11. The main clamping plate 181 is slid to make the main clamping plate 181 clamp the coal mining machine from both sides, the bolt is inserted into the through hole 14 on the first connecting column 11 and is resisted against the main clamping plate 181 to avoid the movement of the main clamping plate 181. The position of the auxiliary clamping plate 182 on the second connecting column 19 is adjusted, the bolt is inserted through the positioning hole 183 to fix the length of the second connecting column 19, another bolt is directly inserted through the through hole 14 on the second connecting column 19 to limit the position of the auxiliary clamping plate 182, so that the main clamping plate 181 and the auxiliary clamping plate 182 clamp the coal mining machine simultaneously.

Claims

1. A support device for a coal mining machine for steep seam mining, characterized in that The utility model provides a support assembly for coal mining machine, including bottom plate (10), first connecting column (11) and support assembly (12), the bottom plate (10) is square structure, the bottom plate (10) is placed with coal mining machine, and the size of coal mining machine is greater than the size of bottom plate (10), and the left and right sides of bottom plate (10) are provided with first connecting column (11), and first connecting column (11) penetrates the side wall of bottom plate (10) and is connected with bottom plate (10) slidingly, and the bottom of bottom plate (10) is fixedly connected with support assembly (12), and support assembly (12) is used for adjusting the placing height of coal mining machine, and the first connecting column (11) is slidably connected with clamping assembly (18), and clamping assembly (18) is used for clamping the coal mining machine on bottom plate (10).

2. A support device for a coal mining machine used in a steeply inclined coal seam according to claim 1, characterized in that, The bottom plate (10) includes a plate body (101), a first side plate (102), and a second side plate (103). The size of the plate body (101) is smaller than that of the coal mining machine. The first side plate (102) and the second side plate (103) penetrate the two side walls of the plate body (101) and are slidably connected with the plate body (101). The first side plate (102) is located above the second side plate (103). The sizes of the first side plate (102) and the second side plate (103) are smaller than that of the plate body (101). The upper top surfaces of the first side plate (102) and the second side plate (103) are coated with a magnetic coating (13). The upper surface of the plate body (101) is a rough surface.

3. A support device for a coal mining machine in steeply inclined coal seams according to claim 2, characterized in that, The support assembly (12) includes an inner cylinder (121), an outer cylinder (122), a foot pad (123), and a through hole (124). The outer cylinder (122) is sleeved outside the inner cylinder (121). The inner cylinder (121) and the outer cylinder (122) are slidably connected. The lower bottom surface of the outer cylinder (122) is fixedly connected with the foot pad (123). The surfaces of the inner cylinder (121) and the outer cylinder (122) are provided with the through hole (124). The inner cylinder (121) and the outer cylinder (122) are fixed by bolts penetrating the through hole (124).

4. A support device for a coal mining machine used in a steeply inclined coal seam according to claim 3, characterized in that, The inner cylinder (121) is an obtuse angle structure, and the lower bottom surface of the inner cylinder (121) is fixedly connected with the plate body (101).

5. A support device for a coal mining machine in steeply inclined coal seams according to claim 4, characterized in that, A plurality of through holes (14) are uniformly arranged on the first connecting column (11). The through holes (14) are arranged on the side wall of the plate body (101). The through holes (14) on the side wall of the plate body (101) and the through holes (14) on the first connecting column (11) are fixed by bolts.

6. A support device for a coal mining machine in steeply inclined coal seams according to claim 5, characterized in that, The lower bottom surface of the plate body (101) is clamped with a receiving frame (15), the receiving frame (15) is internally provided with a first pad plate (16) and a second pad plate (17), the thickness of the first pad plate (16) is the same as the distance from the upper top surface of the first side plate (102) to the upper top surface of the plate body (101), the thickness of the second pad plate (17) is the same as the distance from the upper top surface of the second side plate (103) to the upper top surface of the plate body (101), and the upper surfaces of the first pad plate (16) and the second pad plate (17) are smooth surfaces.

7. A support device for a coal mining machine in steeply inclined coal seams according to claim 6, characterized in that, The lower bottom surfaces of the first pad plate (16) and the second pad plate (17) are coated with a metal coating, and the side walls of the first pad plate (16) and the second pad plate (17) are fixed with a pull rope.

8. A support device for a coal mining machine in steeply inclined coal seams according to claim 7, characterized in that, The clamping assembly (18) comprises a main clamping plate (181), a vice clamping plate (182) and a positioning hole (183), the first connecting column (11) penetrates through the main clamping plate (181) and is in sliding connection with the main clamping plate (181), the two sides of the main clamping plate (181) are provided with a vice clamping plate (182), the second connecting column (19) penetrates through the side wall of the main clamping plate (181) and is in sliding connection with the main clamping plate (181), the second connecting column (19) penetrates through the vice clamping plate (182) and is in sliding connection with the vice clamping plate (182), and the included angle between the main clamping plate (181) and the vice clamping plate (182) is a right angle.

9. A support device for a coal mining machine in steeply inclined coal seams according to claim 8, characterized in that, A plurality of through holes (14) are uniformly arranged on the second connecting column (19), the positioning hole (183) is arranged on the main clamping plate (181), a bolt penetrates through the positioning hole (183) and the through hole (14) on the second connecting column (19) to fix the position of the second connecting column (19), and another bolt penetrates through the through hole (14) on the second connecting column (19) to limit the position of the vice clamping plate (182).

10. A support device for a coal mining machine in steeply inclined coal seams according to claim 9, characterized in that, The main clamping plate (181) and the vice clamping plate (182) are both double-layer structures, and a strong spring is arranged in the double-layer structure, and the main clamping plate (181) is a trapezoidal structure.

Citation Information

Patent Citations

  • Coal mining machine supporting device for coal mine collection

    CN212454409U