Hydraulic support and base gap bridge structure

Abstract

The utility model relates to a hydraulic support and a base gap bridge structure. The hydraulic support comprises a hydraulic support body, protective plates are installed at the two ends of one side of the hydraulic support body, lifting grooves are formed in one ends of the interiors of the protective plates, auxiliary arms are slidably connected to the inner sides of the lifting grooves, and the other ends of the auxiliary arms are installed on the hydraulic support body; a positioning and locking mechanism is installed on the auxiliary arm and the protective plate, the positioning and locking mechanism comprises a pushing and butting assembly and an elastic pressing and positioning assembly, the pushing and butting assembly is used for preliminarily positioning the position of the auxiliary arm, and the elastic pressing and positioning assembly is used for locking or unlocking the position relation between the auxiliary arm and the protective plate. The device is simple in structure and convenient to operate, locking and unlocking operation can be completed by pressing and then twisting, a worker can conveniently and rapidly adjust and position the auxiliary arm when adjusting the position of the top plate, and the practicability and the working efficiency of the device are further improved.

Description

Technical Field

[0001] This utility model relates to the field of hydraulic support technology, specifically to a hydraulic support and base bridge structure. Background Technology

[0002] In underground coal mining, top caving is a mining technique developed for thick and extra-thick coal seams. This technique typically involves setting up a working face supported by hydraulic supports at the bottom of the thick coal seam and mining horizontally along the seam. As the working face advances towards the hydraulic supports, the coal seam at the top of the goaf behind the supports breaks and falls out, exiting through a "coal release window" at the tail of the hydraulic supports. This allows for the recovery of remaining coal at the top of the goaf, enabling simultaneous mining in front of and behind the hydraulic supports, achieving full-thickness coal seam extraction in a single operation and significantly increasing mining intensity. In contrast, the coal seam at the top of the goaf is usually broken up using blasting or similar methods. This method exerts a significant impact on the hydraulic supports of the working face, easily causing damage and failure of the hydraulic cylinders, leading to the collapse of the hydraulic support roof and posing a substantial safety hazard.

[0003] To address the aforementioned technical problems, Chinese Patent No. CN115929376A discloses a hydraulic support, which includes a base, a top plate, a first hydraulic cylinder, and a locking component. The first hydraulic cylinder is movably connected to the base and vertically positioned. The top plate is movably connected to the top of the first hydraulic cylinder. The front end of the top plate is provided with a hinged flap that can swing up and down and a first driving component that can drive the flap to rotate. The top plate is also provided with an auxiliary component connected to the base. The locking component can lock the auxiliary pipe and the base so that the auxiliary component cannot move up and down relative to the base, or the locking component can release the auxiliary pipe so that the auxiliary component can move up and down relative to the base.

[0004] Although the existing technical solution described above can replace the hydraulic cylinder to support the top plate of the hydraulic support when the hydraulic cylinder of the hydraulic support fails due to the impact of blasting, thus preventing the top plate from falling and improving the safety of the top caving coal mining process, the operation is cumbersome and time-consuming. This is because when placing the hydraulic support and adjusting the position of the top plate, both locking and unlocking require the operator to turn the corresponding bolt locking parts one turn at a time. This affects the work efficiency of the operator. Utility Model Content

[0005] The purpose of this utility model is to provide a hydraulic support and base bridge structure to solve the problem mentioned in the background art that when placing the hydraulic support and adjusting the position of the top plate, whether locking or unlocking, the operator needs to turn the corresponding bolt locking parts one circle at a time, which is cumbersome and time-consuming, thus affecting the work efficiency of the operator.

[0006] To achieve the above objectives, this utility model provides the following technical solution:

[0007] A hydraulic support includes a hydraulic support body. Protective plates are installed at both ends of one side of the hydraulic support body. A lifting groove is formed at one end of the inner side of each protective plate. An auxiliary arm is slidably connected to the inner side of the lifting groove. The other end of the auxiliary arm is mounted on the hydraulic support body. A positioning and locking mechanism is installed on the auxiliary arm and the protective plates. The positioning and locking mechanism includes a pushing and docking assembly and a spring-loaded positioning assembly. The pushing and docking assembly is used to initially position the auxiliary arm, and the spring-loaded positioning assembly is used to lock or unlock the positional relationship between the auxiliary arm and the protective plates.

[0008] As a preferred embodiment of this utility model, the pushing and docking assembly includes an overlapping plate installed on one end of the outer wall of the guard plate. The top of the overlapping plate is provided with a synchronization groove. A synchronization block is slidably connected to the inner side of the synchronization groove. The cross-section of the synchronization block and the synchronization groove is T-shaped. A fixing plate is installed on one end of the synchronization block. A docking block is installed on one side of the fixing plate. A first rubber pad is installed on one end of one side of the fixing plate. A docking hole is provided inside the first rubber pad. The docking hole fits against the outer wall of the docking block.

[0009] As a preferred embodiment of this utility model, a mounting base is installed at the other end of the top of the overlapping plate. An extension groove is provided at the top of the mounting base. A sealing cover is hinged to the top of the mounting base on one side of the extension groove. A magnetic block is embedded in one end of the sealing cover. An iron block that attracts the magnetic block is embedded in one side of the inner wall of the extension groove. A snap-pull groove is provided on one side of the sealing cover. A docking groove that slides with the docking block is provided on one side of the mounting base.

[0010] As a preferred embodiment of this utility model, the spring-loaded positioning assembly includes a mounting groove located inside the mounting base on one side of the docking groove, a first movable rod rotatably connected to one end of the inner side of the mounting groove, and a spring-loaded block sleeved on the outer side of the first movable rod.

[0011] As a preferred embodiment of this utility model, the opposing surfaces of the spring-loaded block and the docking block are both provided with inclined surfaces. A fixing groove is provided inside the spring-loaded block on one side of the inclined surface. A fixing spring is installed between the fixing groove and the inner wall of the mounting groove. The other end of the fixing spring is fixedly connected to the inner wall of the mounting groove. A knob is installed at one end of the first movable rod that extends to the inner side of the extension groove.

[0012] As a preferred embodiment of this utility model, the inner surface of the spring-loaded block is provided with a retraction groove at its inclined surface, a retraction rod is rotatably connected to the inner side of the retraction groove, a retraction plate is installed on the outer side of the retraction rod, a slope surface that fits against the inclined surface is provided on one side of the retraction plate, a torsion spring is installed on one end of the retraction rod, and an abutment groove is provided on the outer wall of the mating block at its inclined surface.

[0013] As a preferred embodiment of this utility model, a limiting plate is installed at the other end of the spring-loaded block, a limiting groove is provided on the inner wall of the mounting groove to be slidably connected with the limiting plate, a positioning rod is installed at the other end of one side of the fixing plate, and multiple sets of positioning holes are arranged on one side of the outer wall of the auxiliary arm, and the positioning rod and the positioning hole are slidably connected.

[0014] A base bridge structure includes a hydraulic support as described above.

[0015] Compared with the prior art, the beneficial effects of this utility model are:

[0016] In this invention, the auxiliary arm is initially positioned by pushing and docking components, and the positional relationship between the auxiliary arm and the guard plate is locked or unlocked by spring-pressing positioning components. The structure is simple and easy to operate. The locking and unlocking operations can be completed by pressing and then twisting, which makes it easy for workers to quickly adjust and position the auxiliary arm when adjusting the position of the top plate, further improving the practicality and work efficiency of the device. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0018] Figure 2 This is a three-dimensional structural diagram of the overlapping plate and mounting base of this utility model;

[0019] Figure 3 This is a partial cross-sectional view of the mounting base of this utility model.

[0020] In the diagram: 1. Main body of hydraulic support; 2. Guard plate; 3. Auxiliary arm; 4. Sealing cover; 5. Magnetic block; 6. Fixing plate; 7. Connecting block; 8. First movable rod; 9. First rubber pad; 10. Mounting seat; 11. Spring block; 12. Knob; 13. Fixing spring; 14. Retraction rod; 15. Retraction plate; 16. Overlap plate; 17. Torsion spring; 18. Limiting plate; 19. Positioning rod. Detailed Implementation

[0021] The technical solutions of the present utility model will be clearly and completely described below with reference to the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. All other embodiments obtained by those skilled in the art based on the embodiments of the present utility model without creative effort are within the protection scope of the present utility model.

[0022] Example:

[0023] Please see Figures 1-3 This utility model provides a technical solution:

[0024] A hydraulic support includes a hydraulic support body 1. Protective plates 2 are installed at both ends of one side of the hydraulic support body 1. A lifting groove is formed at one end of the inner side of the protective plate 2, and an auxiliary arm 3 is slidably connected to the inner side of the lifting groove. The other end of the auxiliary arm 3 is installed on the hydraulic support body 1. A positioning and locking mechanism is installed on the auxiliary arm 3 and the protective plate 2. The positioning and locking mechanism includes a pushing and docking assembly and a spring-loaded positioning assembly. The pushing and docking assembly is used to initially position the auxiliary arm 3, and the spring-loaded positioning assembly is used to lock or unlock the positional relationship between the auxiliary arm 3 and the protective plate 2. In use, the auxiliary arm 3 can be initially positioned by pushing and docking assembly, and the positional relationship between the auxiliary arm 3 and the protective plate 2 can be locked or unlocked by spring-loaded positioning assembly. The device has a simple structure and is easy to operate; locking and unlocking operations can be completed by pressing and then twisting. This allows workers to quickly adjust and position the auxiliary arm 3 when adjusting the top plate position, further improving the practicality and work efficiency of the device.

[0025] In this embodiment, as Figure 1 , Figure 2 and Figure 3 As shown, the push-and-connect assembly includes an overlapping plate 16 installed on one end of the outer wall of the guard plate 2. The top of the overlapping plate 16 is provided with a synchronous groove, and a synchronous block is slidably connected inside the synchronous groove. The cross-section of the synchronous block and the synchronous groove is T-shaped. A fixing plate 6 is installed on one end of the synchronous block, and a connecting block 7 is installed on one side of the fixing plate 6. A first rubber pad 9 is installed on one end of one side of the fixing plate 6. A connecting hole is opened inside the first rubber pad 9, and the connecting hole fits against the outer wall of the connecting block 7. First, when the top plate is raised by the hydraulic cylinder on the hydraulic support body 1, the auxiliary arm 3 can slide synchronously inside the lifting groove, and the positioning rod 19 also begins to slide into the positioning hole. After the top plate reaches the designated position, the fixing plate 6 can be held in conjunction with the synchronous groove and the synchronous block to drive the connecting block 7 to slide into the connecting groove. The first rubber pad 9 on the fixing plate 6 can overlap the outer wall of the mounting base 10.

[0026] In this embodiment, as Figure 1 , Figure 2 and Figure 3As shown, the spring-loaded positioning assembly includes a mounting groove located inside the mounting base 10 on one side of the docking groove. A first movable rod 8 is rotatably connected to one end of the mounting groove. A spring-loaded block 11 is sleeved on the outside of the first movable rod 8. Then, the fixing plate 6 is pressed to make the docking block 7 and the spring-loaded block 11 partially contact each other. With the help of two sets of inclined surfaces, the spring-loaded block 11 and the first movable rod 8 can rotate and shift. At the same time, the fixing spring 13 is also stretched until the inclined surface on the docking block 7 contacts the slope on the retraction plate 15, forcing the retraction plate 15 to retract to the inside of the retraction groove. After it is aligned with the abutment groove, the torsion spring 17 rebounds and drives the retraction plate 15 to unfold inside the abutment groove. At this time, the first rubber pad 9 is in a compressed state. Then, the fixing plate 6 is released, and the first rubber pad 9 rebounds a distance and the retraction plate 15 abuts against the inner wall of the abutment groove, thus completing the fixation of the position of the positioning rod 19 and limiting the auxiliary arm 3.

[0027] In this embodiment, as Figure 1 , Figure 2 and Figure 3 As shown, both the spring-loaded block 11 and the mating block 7 have inclined surfaces on their opposite sides. A fixing groove is formed inside the spring-loaded block 11 on one side of the inclined surface. A fixing spring 13 is installed between the fixing groove and the inner wall of the mounting groove. The other end of the fixing spring 13 is fixedly connected to the inner wall of the mounting groove. A knob 12 is installed at one end of the first movable rod 8 extending into the inner side of the extension groove. A retraction groove is formed inside the spring-loaded block 11 on its inclined surface. A retraction rod 14 is rotatably connected to the inner side of the retraction groove. A retraction plate 15 is installed on the outer side of the retraction rod 14. A slope that fits against the inclined surface is formed on one side of the retraction plate 15. A torsion spring 17 is installed at one end of the retraction rod 14. The outer wall of the mating block 7 is located on its inclined surface... The mounting plate 11 has an abutment groove on one side, and a limit plate 18 is installed on the other end of the spring-loaded block 11. A limit groove is provided on the inner wall of the mounting groove, which is slidably connected to the limit plate 18. A positioning rod 19 is installed on the other end of one side of the fixing plate 6. Multiple sets of positioning holes are arranged on one side of the outer wall of the auxiliary arm 3. The positioning rod 19 is slidably connected to the positioning hole. Furthermore, when it is necessary to unlock the position of the auxiliary arm 3, the knob 12 can be rotated to rotate the first movable rod 8 in conjunction with the limit plate 18 and the limit groove, so that the spring-loaded block 11 actively stretches the fixing spring 13. The retracting plate 15 can then be disengaged from the abutment groove, and the positioning rod 19 moves away from the inner side of the positioning hole. At this time, the position of the auxiliary arm 3 can be adjusted.

[0028] In this embodiment, as Figure 1 , Figure 2 and Figure 3As shown, a mounting base 10 is installed at the other end of the top of the overlapping plate 16. An extension groove is provided at the top of the mounting base 10. A sealing cover 4 is hinged to the top of the mounting base 10 on one side of the extension groove via a hinge. A magnetic block 5 is embedded in one end of the sealing cover 4. An iron block that attracts the magnetic block 5 is embedded in one side of the inner wall of the extension groove. A snap-pull groove is provided on one side of the sealing cover 4. A docking groove that slides with the docking block 7 is provided on one side of the mounting base 10. Furthermore, when the locking is completed, the snap-pull groove can be engaged with the hinge to rotate the sealing cover 4 so that it engages with the inner side of the extension groove. After the magnetic block 5 and the iron block are attracted, the knob 12 can be covered inside the extension groove to prevent subsequent personnel from accidentally touching it and causing the parts to loosen.

[0029] The implementation principle of the hydraulic support and base bridge structure in this application embodiment is as follows: When the top plate is raised by the hydraulic cylinder on the hydraulic support body 1, the auxiliary arm 3 can slide synchronously inside the lifting groove, and the positioning rod 19 also begins to slide into the positioning hole. After the top plate reaches the designated position, the fixing plate 6 can be held in conjunction with the synchronous groove and synchronous block to drive the docking block 7 to slide into the docking groove. The first rubber pad 9 on the fixing plate 6 can overlap the outer wall of the mounting base 10. Then, the fixing plate 6 is pressed to make the docking block 7 and the spring pressure block 11 partially contact each other. With the help of the two sets of inclined surfaces, the spring pressure block 11 and the first movable rod 8 can rotate and shift. At the same time, the fixing spring 13 is also stretched until the inclined surface on the docking block 7 contacts the slope on the retraction plate 15, forcing the retraction plate 15 to retract into the retraction groove. After it is aligned with the abutment groove, the torsion spring 17 rebounds and drives the return. The retractable plate 15 unfolds inside the abutment groove. At this time, the first rubber pad 9 is compressed. Then, the fixing plate 6 is released, and the first rubber pad 9 rebounds a distance, causing the retractable plate 15 to abut against the inner wall of the abutment groove. This completes the fixation of the position of the positioning rod 19 and limits the position of the auxiliary arm 3. When it is necessary to unlock the position of the auxiliary arm 3, the knob 12 can be rotated in conjunction with the limiting plate 18 and the limiting groove to drive the first movable rod 8 to rotate, allowing the spring block 11 to actively stretch the fixing spring 13. The retractable plate 15 can then be disengaged from the abutment groove, and the positioning rod 19 will move away from the inner side of the positioning hole. At this time, the position of the auxiliary arm 3 can be adjusted. When the locking is completed, the latching groove can be engaged with the hinge to drive the sealing cover 4 to flip, so that it engages with the inner side of the extension groove. After the magnetic block 5 and the iron block are attracted, the knob 12 can be covered inside the extension groove to prevent subsequent personnel from accidentally touching it and causing the parts to loosen.

[0030] A base bridge structure includes a hydraulic support as described above.

[0031] The control method of this utility model is through a controller. The control circuit of the controller can be implemented by simple programming by those skilled in the art. The power supply is also common knowledge in the field. Since this utility model is used to protect mechanical devices, the control method and circuit connection will not be explained in detail.

[0032] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A hydraulic support, comprising a hydraulic support body (1), characterized in that: The hydraulic support body (1) has guard plates (2) installed at both ends on one side. A lifting groove is opened at one end of the guard plate (2). An auxiliary arm (3) is slidably connected to the inside of the lifting groove. The other end of the auxiliary arm (3) is installed on the hydraulic support body (1). A positioning and locking mechanism is installed on the auxiliary arm (3) and the guard plate (2). The positioning and locking mechanism includes a push-and-connect component and a spring-press positioning component. The push-and-connect component is used to initially position the auxiliary arm (3). The spring-press positioning component is used to lock or unlock the positional relationship between the auxiliary arm (3) and the guard plate (2).

2. A hydraulic support according to claim 1, characterized in that: The push-and docking assembly includes an overlap plate (16) installed on one end of the outer wall of the guard plate (2). The top of the overlap plate (16) is provided with a synchronization groove. A synchronization block is slidably connected to the inside of the synchronization groove. The cross-section of the synchronization block and the synchronization groove is T-shaped. A fixing plate (6) is installed on one end of the synchronization block. A docking block (7) is installed on one side of the fixing plate (6). A first rubber pad (9) is installed on one end of one side of the fixing plate (6). A docking hole is provided inside the first rubber pad (9). The docking hole fits against the outer wall of the docking block (7).

3. A hydraulic support according to claim 2, characterized in that: The other end of the top of the overlapping plate (16) is equipped with a mounting base (10). The top of the mounting base (10) is provided with an extension groove. The top of the mounting base (10) is connected to a sealing cover (4) by a hinge on one side of the extension groove. A magnetic block (5) is embedded in one end of the sealing cover (4). An iron block that attracts the magnetic block (5) is embedded in one side of the inner wall of the extension groove. A snap-pull groove is provided on one side of the sealing cover (4). A docking groove that slides with the docking block (7) is provided on one side of the mounting base (10).

4. A hydraulic support according to claim 3, characterized in that: The spring-loaded positioning assembly includes a mounting groove located inside the mounting base (10) on one side of the docking groove. A first movable rod (8) is rotatably connected to one end of the inner side of the mounting groove, and a spring-loaded block (11) is sleeved on the outer side of the first movable rod (8).

5. A hydraulic support according to claim 4, characterized in that: The opposing surfaces of the spring-loaded block (11) and the docking block (7) are both provided with inclined surfaces. The inside of the spring-loaded block (11) is provided with a fixing groove on one side of the inclined surface. A fixing spring (13) is installed between the fixing groove and the inner wall of the mounting groove. The other end of the fixing spring (13) is fixedly connected to the inner wall of the mounting groove. A knob (12) is installed at one end of the first movable rod (8) that extends to the inner side of the extension groove.

6. A hydraulic support according to claim 5, characterized in that: The inner side of the spring block (11) is provided with a retraction groove on its inclined surface. A retraction rod (14) is rotatably connected to the inner side of the retraction groove. A retraction plate (15) is installed on the outer side of the retraction rod (14). A slope surface that fits the inclined surface is provided on one side of the retraction plate (15). A torsion spring (17) is installed on one end of the retraction rod (14). An abutment groove is provided on the outer wall of the connecting block (7) on its inclined surface.

7. A hydraulic support according to claim 6, characterized in that: The other end of the spring block (11) is equipped with a limiting plate (18), and the inner wall of the mounting groove is provided with a limiting groove that is slidably connected to the limiting plate (18). The other end of one side of the fixing plate (6) is equipped with a positioning rod (19), and a number of positioning holes are arranged on one side of the outer wall of the auxiliary arm (3). The positioning rod (19) is slidably connected to the positioning hole.

8. A base bridge structure, characterized in that: Includes the hydraulic support as described in any one of claims 1-7.

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