Coal mine composite roof supporting structure

Abstract

The utility model belongs to the field of coal mining, particularly relates to a coal mine composite roof supporting structure, and aims to solve the problems that when a coal seam is supported and fixed in the prior art, the coal seam needs to penetrate through the interior of the coal seam, certain drilling damage is caused to the coal seam, and the coal seam is still cracked due to a perforation position after being used for a long time. According to the scheme, the device comprises a stabilizing mechanism, and the stabilizing mechanism is arranged in the composite roof and used for stably supporting the two sides of the inner wall of the composite roof; and the supporting mechanism is arranged in the composite top plate and used for supporting and fixing the top side of the inner wall of the composite top plate. When used, the composite top plate does not need to penetrate through the interior of the composite top plate, certain drilling damage to the composite top plate is prevented, the phenomenon that after being used for a long time, the composite top plate still cracks due to the penetrating hole is avoided, the service life of the composite top plate is prolonged, and the application effect is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of coal mining, in particular to a composite roof support structure for a coal mine. Background Art

[0002] The composite roof support technology of coal mines is a representative new technology. For the composite roof coal seam, the layers are very distinct, and each layer is composed of different lithology strata. At the same time, there is a relatively clear separation surface between the strata.

[0003] After searching, the patent with the authorization announcement number CN219865078U proposes a composite roof support structure for coal mines, including a mounting seat, the front end of which is provided with a coal seam and a rock layer, and a connecting rod 2 is installed on the outer part of the upper surface of the mounting seat. In this composite roof support structure for coal mines, when the screw tube is pushed forward, the welding rod connected to the upper surface of the connecting plate will drive the total rod to move forward, and the connecting plate installed on the top of the total rod will push the push column to move. The articulated arm hinged to the lower part of the outer wall of the push column is hinged to the through-groove opening opened on the surface of the expansion arm, so that under the push of the push column, the articulated arm can swing, and the expansion arm expands outward. After expansion, the expansion arm contacts the hole wall pre-opened in the rock layer through the through-hole opened on the outer wall of the anchor column, and the oblique triangle connected under the outer wall of the expansion arm will fully contact the hole wall to prevent the anchor column from falling off the perforated part. The following problems exist in this technical solution:

[0004] In the existing method, when the coal seam is supported and fixed, it is necessary to penetrate the inside of the coal seam, and certain drilling damage will be caused to the coal seam, resulting in cracks in the coal seam due to the perforation after long-term use, thereby affecting the service life of the coal seam and reducing the applicability effect;

[0005] In view of the above problems, the utility model document proposes a composite roof support structure for a coal mine. Utility Model Content

[0006] The utility model provides a composite roof support structure for a coal mine, which solves the problem in the prior art that when supporting and fixing the coal seam, it is necessary to penetrate the interior of the coal seam, and certain drilling damage to the coal seam is caused, resulting in the coal seam still cracking due to the perforation after long-term use, thereby affecting the service life of the coal seam and reducing the applicability effect.

[0007] The utility model provides the following technical solutions:

[0008] A composite roof support structure for a coal mine, comprising:

[0009] A composite top plate, wherein a plurality of damping buffers are fixedly arranged on both sides of the inner wall of the composite top plate, a buffer baffle is fixedly arranged at one end of the plurality of damping buffers, and an anti-collision pad is arranged on one side of the buffer baffle;

[0010] A stabilizing mechanism, which is arranged in the composite roof plate and is used to provide stable support to both sides of the inner wall of the composite roof plate;

[0011] The supporting mechanism is arranged in the composite top plate and is used to support and fix the top side of the inner wall of the composite top plate.

[0012] In a possible design, the stabilizing mechanism includes two side plates, and the two side plates are respectively fixed on both sides of the inner wall of the composite top plate. A sliding groove is opened on one side of each side plate, and two slides are slidably connected inside the sliding groove. The four slides are divided into two groups, and one side of each group of slides is rotatably connected to a rotating rod through a rotating shaft.

[0013] In a possible design, one side of the other group of slides is fixedly provided with an internal threaded tube, one end of the rotating rod is fixedly provided with a screw threadedly connected to the inside of the internal threaded tube, and the outer wall of the rotating rod is fixedly provided with an anti-slip sleeve.

[0014] In a possible design, a limiting rod is respectively passed through the top of both ends of each side plate, and a slot for limiting the limiting rod to be inserted into the bottom side of the inner wall of the slide groove is provided.

[0015] In a possible design, the support mechanism includes a connecting plate, which is fixedly arranged between two side plates. The internal thread of the connecting plate is connected to a threaded rod, and a hand wheel is fixedly arranged at the bottom end of the threaded rod. The top end of the threaded rod is rotatably connected to a resistance plate that contacts the bottom side of the inner wall of the composite top plate through a rotating shaft, and two telescopic rods are fixedly arranged between the bottom side of the resistance plate and the top side of the connecting plate.

[0016] In a possible design, fixing plates are fixedly provided on both sides of the inner wall of the composite top plate, and a plurality of fixing holes are opened on the top of each of the fixing plates.

[0017] In the present application, when in use, the composite top plate is first installed to the designated position, and the expansion bolts are used to penetrate the fixing holes provided on the fixing plate so that the expansion bolts are fixed to the corresponding ground to ensure the stability of the composite top plate. Then, the screw rod is threadedly rotated in the internal threaded barrel by rotating the rotating rod, so that the length of the internal threaded barrel and the screw rod can be adjusted according to the actual width requirements of the composite top plate. Then, the slide plate is pushed to slide in the slide groove, and the internal threaded barrel and the screw rod can be slidably installed between the two side plates, which plays a better supporting role. At the same time, it is convenient to adjust the supporting position according to the supporting requirements, thereby enhancing the scope of use. Therefore, when supporting and fixing the composite top plate, it is no longer necessary to pass through its interior, thereby preventing certain drilling damage to the composite top plate, and avoiding the composite top plate from cracking due to the perforation after long-term use, thereby enhancing the service life of the composite top plate and improving the applicable effect. When the threaded barrel and the screw rod reach the appropriate position, the limit rod is penetrated through the top side of the side plate and inserted into the slot for fixing, thereby achieving the limit resistance effect, preventing the slide plate from slipping, and improving the use effect.

[0018] Next, by rotating the hand wheel, the threaded rod is driven to rotate in the thread inside the connecting plate, thereby driving the contact plate to move up and down. The telescopic rod ensures the stability of the contact plate during movement. When the contact plate is in close contact with the bottom side of the inner wall of the composite roof plate, stable support for the top side of the inner wall of the composite roof plate can be achieved, so as to complete the supporting and fixing function, further expand the supporting range, and improve the use effect. When the composite roof plate is impacted or vibrated, the damping buffer and the anti-collision pad can absorb part of the impact force, reduce the damage to the composite roof plate, and prevent it from deformation or collapse, which is convenient for use.

[0019] In the utility model, the composite roof support structure of a coal mine can slide and install the threaded tube and the screw rod between the two side plates through a stabilizing mechanism, which plays a good supporting role. At the same time, it is convenient to adjust the supporting position according to the supporting requirements, thereby enhancing the scope of use.

[0020] In the utility model, the composite roof support structure of a coal mine can slide and install the threaded tube and the screw rod between the two side plates through the support mechanism, which plays a good supporting role. At the same time, it is convenient to adjust the support position according to the support requirements, thereby enhancing the scope of use;

[0021] In the utility model, when supporting and fixing the composite roof plate, it is no longer necessary to penetrate the inside thereof, thereby preventing certain drilling damage to the composite roof plate and avoiding the composite roof plate from cracking due to the perforations after long-term use, thereby enhancing the service life of the composite roof plate and improving the applicability effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 A schematic diagram of the main structure of a composite roof support structure for a coal mine provided by an embodiment of the utility model;

[0023] Figure 2 A schematic diagram of a buffer baffle structure of a coal mine composite roof support structure provided by an embodiment of the utility model;

[0024] Figure 3 A schematic diagram of the structure of two side plates of a composite roof support structure for a coal mine provided by an embodiment of the utility model;

[0025] Figure 4 A schematic diagram of a connecting plate structure of a coal mine composite roof support structure provided in an embodiment of the utility model.

[0026] Reference numerals:

[0027] 1. Composite top plate; 2. Damping buffer; 3. Buffer baffle; 4. Anti-collision pad; 5. Fixed plate; 6. Fixed hole; 7. Side plate; 8. Slide groove; 9. Slide plate; 10. Rotating rod; 11. Anti-slip sleeve; 12. Screw rod; 13. Internal threaded cylinder; 14. Limiting rod; 15. Slot; 16. Connecting plate; 17. Threaded rod; 18. Hand wheel; 19. Telescopic rod; 20. Contact plate. DETAILED DESCRIPTION

[0028] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all of the embodiments.

[0029] Example 1

[0030] Please refer to Figure 1-Figure 4 , a supporting structure, comprising:

[0031] A composite roof 1, wherein a plurality of damping buffers 2 are fixedly arranged on both sides of the inner wall of the composite roof 1, a buffer baffle 3 is fixedly arranged at one end of the plurality of damping buffers 2, and an anti-collision pad 4 is arranged on one side of the buffer baffle 3. When the composite roof 1 is impacted or vibrated, the damping buffer 2 and the anti-collision pad 4 can absorb part of the impact force, reduce the damage to the composite roof 1, and prevent it from deformation or collapse.

[0032] A stabilizing mechanism is arranged in the composite top plate 1 for providing stable support to both sides of the inner wall of the composite top plate 1. The stabilizing mechanism includes two side plates 7, which are respectively fixedly arranged on both sides of the inner wall of the composite top plate 1. A slide groove 8 is provided on one side of each side plate 7. Two slide plates 9 are slidably connected inside the slide groove 8. The four slide plates 9 are divided into two groups. One side of one group of slide plates 9 is respectively connected to a rotating rod 10 through a rotating shaft, and one side of the other group of slide plates 9 is respectively fixedly provided with an internal threaded tube 13. One end of the rotating rod 10 is fixedly provided with a screw rod 12 threadedly connected to the inside of the internal threaded tube 13, and the outer wall of the rotating rod 10 is fixedly sleeved with an anti-slip sleeve 11.

[0033] By rotating the rotating rod 10, the screw rod 12 is threadably rotated in the internal threaded tube 13, so that the length of the internal threaded tube 13 and the screw rod 12 can be adjusted according to the actual width requirements of the composite top plate 1, and then the slide plate 9 is pushed to slide in the slide groove 8, and the internal threaded tube 13 and the screw rod 12 can be slidably installed between the two side plates 7, which plays a better supporting role. At the same time, it is convenient to adjust the supporting position according to the supporting requirements, thereby enhancing the scope of use. The anti-slip sleeve 11 can not only enhance the friction and anti-slip properties during rotation, but also improve the comfort.

[0034] A limiting rod 14 is respectively passed through the top of both ends of each side panel 7, and a slot 15 for the limiting rod 14 to be inserted into the bottom side of the inner wall of the slide groove 8 is provided. After the internal threaded tube 13 and the screw rod 12 reach the appropriate position, the limiting rod 14 is passed through the top side of the side panel 7 and inserted into the slot 15 for fixing, so as to achieve the limiting resistance effect, prevent the slide plate 9 from slipping, and improve the use effect.

[0035] A supporting mechanism is arranged in the composite top plate 1 for supporting and fixing the top side of the inner wall of the composite top plate 1. The supporting mechanism includes a connecting plate 16, which is fixedly arranged between the two side plates 7. The internal thread of the connecting plate 16 is connected with a threaded rod 17, and a hand wheel 18 is fixedly arranged at the bottom end of the threaded rod 17. The top end of the threaded rod 17 is rotatably connected with a resistance plate 20 that contacts the bottom side of the inner wall of the composite top plate 1 through a rotating shaft, and two telescopic rods 19 are fixedly arranged between the bottom side of the resistance plate 20 and the top side of the connecting plate 16.

[0036] By rotating the hand wheel 18, the threaded rod 17 is driven to rotate on the inner thread of the connecting plate 16, thereby driving the contact plate 20 to move up and down. The telescopic rod 19 ensures the stability of the contact plate 20 during the movement. When the contact plate 20 is in close contact with the bottom side of the inner wall of the composite top plate 1, it can further achieve stable support for the top side of the inner wall of the composite top plate 1, so as to complete the supporting and fixing function.

[0037] The present application can be used in the field of coal mining, and can also be used in other fields applicable to the present application.

[0038] Example 2

[0039] refer to Figure 1 , improved on the basis of the first embodiment: a composite roof support structure for a coal mine, which is applied to the field of coal mining;

[0040] Fixing plates 5 are fixedly arranged on both sides of the inner wall of the composite roof 1. A plurality of fixing holes 6 are opened on the top of each fixing plate 5. The composite roof 1 is installed to a designated position, and expansion bolts are passed through the fixing holes 6 opened on the fixing plates 5 so that the expansion bolts are fixed to the corresponding ground to ensure the stability of the composite roof 1.

[0041] The above are only specific implementations of the utility model, but the protection scope of the utility model is not limited to them. Any technician familiar with the technical field can easily think of changes or substitutions within the technical scope disclosed by the utility model, which should be included in the protection scope of the utility model; in the absence of conflicts, the embodiments of the utility model and the features in the embodiments can be combined with each other. Therefore, the protection scope of the utility model shall be based on the protection scope of the claims.

Claims

1. A composite roof support structure for a coal mine, characterized in that: include: A composite top plate (1), wherein a plurality of damping buffers (2) are fixedly arranged on both sides of the inner wall of the composite top plate (1), a buffer baffle (3) is fixedly arranged at one end of the plurality of damping buffers (2), and an anti-collision pad (4) is arranged on one side of the buffer baffle (3); A stabilizing mechanism, the stabilizing mechanism being arranged in the composite top plate (1) and used for providing stable support to both sides of the inner wall of the composite top plate (1); A support mechanism is arranged in the composite top plate (1) and is used to support and fix the top side of the inner wall of the composite top plate (1).

2. A coal mine composite roof support structure according to claim 1, characterized in that: The stabilizing mechanism comprises two side plates (7), the two side plates (7) are respectively fixedly arranged on both sides of the inner wall of the composite top plate (1), one side of each side plate (7) is provided with a slide groove (8), the interior of the slide groove (8) is slidably connected with two slide plates (9), the four slide plates (9) are divided into two groups, one side of each group of slide plates (9) is rotatably connected with a rotating rod (10) via a rotating shaft.

3. A coal mine composite roof support structure according to claim 2, characterized in that: One side of the other group of slide plates (9) is fixedly provided with an internal threaded tube (13), one end of the rotating rod (10) is fixedly provided with a screw rod (12) threadedly connected to the inside of the internal threaded tube (13), and the outer wall of the rotating rod (10) is fixedly provided with an anti-slip sleeve (11).

4. A coal mine composite roof support structure according to claim 3, characterized in that: A limiting rod (14) is respectively passed through the top of both ends of each side plate (7), and a slot (15) for the limiting rod (14) to be inserted into the limiting position is provided on the bottom side of the inner wall of the slide groove (8).

5. A coal mine composite roof support structure according to claim 4, characterized in that: The support mechanism comprises a connecting plate (16), wherein the connecting plate (16) is fixedly arranged between the two side plates (7), the internal thread of the connecting plate (16) is connected to a threaded rod (17), the bottom end of the threaded rod (17) is fixedly provided with a hand wheel (18), the top end of the threaded rod (17) is rotatably connected to a contact plate (20) in contact with the bottom side of the inner wall of the composite top plate (1) via a rotating shaft, and two telescopic rods (19) are fixedly arranged between the bottom side of the contact plate (20) and the top side of the connecting plate (16).

6. A coal mine composite roof support structure according to claim 1, characterized in that: Fixing plates (5) are fixedly arranged on both sides of the inner wall of the composite top plate (1), and a plurality of fixing holes (6) are opened on the top of each fixing plate (5).

Images