Support stability structure for hydraulic support
By designing structures such as lower sliding shell, upper sliding shell and telescopic frame in the hydraulic support, using the motor to drive the double-threaded rotating shaft and buffer column, the problem of reducing support effect caused by the increase in hydraulic cylinder load is solved, and the stability of the hydraulic support is achieved. Improved flexibility, reducing failure and safety risks.
Patent Information
- Application Number
- CN202420942095.8
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-05-06
- Publication Date
- 2024-12-06
- Estimated Expiration
- 2034-05-06
AI Technical Summary
During the lifting process of existing hydraulic support, the support load of the hydraulic cylinder increases, resulting in a decrease in overall support effect and unstable roof beam plates, which may lead to equipment failure and safety accidents.
A bracket structure including a lower sliding shell, an upper sliding shell, a telescopic frame, a square column and a buffer column is designed. The double-threaded rotating shaft drives the lower sliding block and the upper sliding block to move, adjust the height and angle of the telescopic frame, and combine it with The cushioning effect of square columns and springs maintains the stability and flexibility of the hydraulic bracket.
It effectively improves the stability and flexibility of the hydraulic support, reduces the chance of parts and instrument failures, enhances safety, and ensures the support and cushioning effect of the hydraulic support when height adjustment.
Smart Images
Figure CN222121569U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of hydraulic supports, in particular to a support stability structure for a hydraulic support. Background Art
[0002] Hydraulic support is one of the necessary mechanical equipment for coal mining. It can support and fix coal mines and tunnels, and improve the safety and production efficiency of coal mining.
[0003] The stability of the hydraulic support in the prior art mostly relies on the support of the hydraulic cylinder, support arm and support leg. When the hydraulic cylinder drives the hydraulic support to gradually rise, the supporting load of the hydraulic cylinder will become larger and larger, so that the overall supporting effect of the hydraulic support will gradually decrease, and the top beam plate will be prone to instability. When the hydraulic cylinder load is too large and the top beam plate is unstable, it will cause the parts and instruments on the hydraulic cylinder and the hydraulic support to malfunction, thereby causing economic losses. In severe cases, it may cause loopholes in the protection of the hydraulic support, resulting in safety accidents.
[0004] In view of the above technical problems, this application proposes a solution. Utility Model Content
[0005] The purpose of the utility model is to solve the problem that the stability of the hydraulic support in the prior art mostly relies on the support of the hydraulic cylinder, the support arm and the support leg. When the hydraulic cylinder drives the hydraulic support to gradually rise, the supporting load of the hydraulic cylinder will become larger and larger, so that the overall supporting effect of the hydraulic support will gradually decrease, and the top beam plate will be prone to instability. When the hydraulic cylinder load is large and the top beam plate is unstable, it will cause the parts and instruments on the hydraulic cylinder and the hydraulic support to malfunction, thereby causing economic losses. In severe cases, it may cause loopholes in the protection of the hydraulic support, thereby causing safety accidents. The proposed support stability structure for the hydraulic support is provided.
[0006] The purpose of the utility model can be achieved through the following technical solutions:
[0007] The support stability structure for a hydraulic support comprises a hydraulic support body; both sides of the outer wall at the base of the hydraulic support body are fixedly connected to a lower sliding shell; both sides of the outer wall at the top beam plate of the hydraulic support body are fixedly connected to an upper sliding shell; the inner side wall of the lower sliding shell is provided with a pair of lower sliding blocks, and the lower sliding blocks are in an L shape; the inner side wall of the upper sliding shell is provided with a pair of upper sliding blocks, and the upper sliding blocks are in an inverted L shape; one side of the inner wall of a pair of the lower sliding blocks is rotatably connected to a telescopic frame through a pair of first rotating rods, and one side of the outer wall at the top of the telescopic frame is rotatably connected to one side of the inner wall of a pair of upper sliding blocks through a pair of second rotating rods; square columns are provided at both ends of the top end of the outer wall of the lower sliding shell through a square shell; a circular groove is opened at the top end of the outer wall of the square column; the bottom end of the inner wall of the circular groove is fixedly connected to a buffer column through a spring, and the top end of the outer wall of the buffer column is fixedly connected to the bottom end of the outer wall of the upper sliding shell.
[0008] Preferably, a motor is fixedly connected to one side of the outer wall of the lower sliding shell through a fixed block; a double-threaded shaft is provided at the output end of the motor, and one end of the outer wall of the double-threaded shaft passes through one side of the outer wall of the lower sliding shell and a pair of lower sliding blocks, and the double-threaded shaft is threadedly connected to the pair of lower sliding blocks; the outer side walls of the pair of lower sliding blocks are both slidably connected to the inner side wall of the lower sliding shell; the outer side walls of the pair of upper sliding blocks are both slidably connected to the inner side wall of the upper sliding shell.
[0009] Preferably, a pair of first bevel gears are fixedly connected to the outer side wall of the double-threaded rotating shaft, and the pair of first bevel gears are both located in the lower sliding shell; the bottom ends of the outer walls of the pair of square shells are fixedly connected to the top end of the outer wall of the lower sliding shell; the outer side walls of the pair of square columns are respectively slidably connected to the inner side walls of the pair of square shells; the bottom ends of the outer walls of the pair of square shells are rotatably connected to the first threaded rods; the bottom ends of the outer walls of the pair of first threaded rods are fixedly connected to the second bevel gears, and the pair of second bevel gears are respectively meshed with the pair of first bevel gears; the top end of the outer wall of the first threaded rod passes through the square shell and the square column and is located in a circular groove, and the first threaded rod is threadedly connected to the square column.
[0010] Preferably, opposite sides of the outer walls of a pair of lower sliding shells are rotatably connected to a rotating rod via a connecting block; a worm gear is fixedly connected to one end of the outer wall of the rotating rod; one side of the outer wall of the lower sliding shell is rotatably connected to a worm via a first block, and the worm gear and the worm gear are meshed with each other; and the outer side wall of the rotating rod is fixedly connected to a support plate.
[0011] Preferably, one side of the outer wall of the support plate is rotatably connected to a circular rod through a second block; a pair of auxiliary plates are fixedly connected to the outer side wall of the circular rod; one end of the outer wall of the circular rod and the rotating rod are fixedly connected to a first sprocket, and the pair of first sprockets are connected by a chain.
[0012] Compared with the prior art, the beneficial effects of the utility model are:
[0013] 1. The double-threaded shaft is driven to rotate by a motor. Since the double-threaded shaft is threadedly connected to a pair of lower sliding blocks, the rotation of the double-threaded shaft will drive a pair of lower sliding blocks to move toward the center or both sides at the same time, thereby driving the telescopic frame to change the angle and adjust the height, so that the telescopic frame can be adjusted according to the height of the hydraulic support, thereby making the device more flexible. When the hydraulic support needs to adjust the height according to the existing situation, the device can change the shape and height of the telescopic frame at any time through the double-threaded shaft to cooperate with the hydraulic support to enhance stability, thereby making the device more convenient.
[0014] 2. The rotation of the double-threaded shaft will also drive the first bevel gear to rotate, so that the rotation of the first bevel gear drives the second bevel gear to rotate, and the rotation of the second bevel gear drives the first threaded rod to rotate. Because the first threaded rod is threadedly connected to the square column, and the shape of the square column prevents it from rotating in the square shell, the rotation of the first threaded rod causes the square column to only move up and down, so that when the device raises the telescopic frame, the square column will also rise, and when the telescopic frame is lowered, the square column will drop, so that the spring and buffer column on the square column can maintain sufficient elasticity, so that the support, buffering and pressure relief effects on the hydraulic support will not change, so that the hydraulic support will not reduce the stability of the buffer column and the spring due to changes in height. BRIEF DESCRIPTION OF THE DRAWINGS
[0015] In order to facilitate understanding by those skilled in the art, the present invention is further described below in conjunction with the accompanying drawings.
[0016] Figure 1 It is a schematic diagram of the main structure of the utility model;
[0017] Figure 2 It is a schematic diagram of the exploded structure of the lower sliding shell and the rotating rod of the utility model;
[0018] Figure 3 It is a structural schematic diagram of the lower sliding block and the double-threaded rotating shaft of the utility model;
[0019] Figure 4 It is a schematic diagram of the explosion structure of the square shell, square column and buffer column of the utility model;
[0020] Figure 5 It is a structural schematic diagram of the support plate and the auxiliary plate of the utility model;
[0021] Figure 6 It is a structural schematic diagram of the rotating rod and the circular rod of the utility model;
[0022] In the figure: 1. hydraulic support body; 2. lower sliding shell; 3. upper sliding shell; 4. lower sliding block; 5. upper sliding block; 6. telescopic frame; 7. square shell; 8. square column; 9. circular groove; 10. buffer column; 11. motor; 12. double-threaded shaft; 13. first bevel gear; 14. first threaded rod; 15. second bevel gear; 16. rotating rod; 17. worm wheel; 18. worm; 19. support plate; 20. circular rod; 21. auxiliary plate; 22. first sprocket; 23. chain. DETAILED DESCRIPTION
[0023] The technical solution of the utility model will be described clearly and completely in conjunction with the embodiments below. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.
[0024] See also Figure 1-Figure 6As shown, a support stability structure for a hydraulic support comprises a hydraulic support body 1; lower sliding shells 2 are fixedly connected to both sides of the outer wall at the base of the hydraulic support body 1; upper sliding shells 3 are fixedly connected to both sides of the outer wall at the top beam plate of the hydraulic support body 1; a pair of lower sliding blocks 4 are provided on the inner side wall of the lower sliding shell 2, and the lower sliding blocks 4 are L-shaped; a pair of upper sliding blocks 5 are provided on the inner side wall of the upper sliding shell 3, and the upper sliding blocks 5 are in an inverted L shape; one side of the inner wall of the pair of lower sliding blocks 4 is rotatably connected to a telescopic frame 6 through a pair of first rotating rods, and one side of the outer wall at the top of the telescopic frame 6 is rotatably connected to one side of the inner wall of the pair of upper sliding blocks 5 through a pair of second rotating rods; both ends of the outer wall top of the lower sliding shell 2 are connected by square The shell 7 is provided with a square column 8; the top of the outer wall of the square column 8 is provided with a circular groove 9; the bottom end of the inner wall of the circular groove 9 is fixedly connected with a buffer column 10 through a spring, and the top end of the outer wall of the buffer column 10 is fixedly connected to the bottom end of the outer wall of the upper sliding shell 3, and the two sides of the hydraulic support body 1 are supported by a pair of telescopic frames 6, thereby improving the stability of the hydraulic support, and the telescopic frame 6 is triangular in shape, so that the stability of the telescopic frame 6 is further improved, and the top beam plate of the hydraulic support is supported by the structure of the square column 8, the buffer column 10, the spring and the upper sliding shell 3, so that the top beam plate of the hydraulic support is more stable, and the buffer column 10 and the spring can buffer and release pressure, so that the application improves the hydraulic support through the overall structure of the device The overall stability of the frame is improved, the probability of failure of parts and instruments on the hydraulic support is reduced, thereby further improving the safety of the hydraulic support. A pair of opposite sides of the outer wall of the lower sliding shell 2 are rotatably connected to a rotating rod 16 through a connecting block; one end of the outer wall of the rotating rod 16 is fixedly connected to a worm wheel 17; one side of the outer wall of the lower sliding shell 2 is rotatably connected to a worm 18 through a first block, and the worm wheel 17 and the worm 18 are meshed with each other; the outer side wall of the rotating rod 16 is fixedly connected to a support plate 19, and by rotating the worm 18, the worm wheel 17 and the worm 18 are meshed with each other, so that the rotation of the worm 18 will drive the worm wheel 17 to rotate, thereby causing the rotation of the worm wheel 17 to drive the rotating rod 16 to rotate, and because the outer side wall of the rotating rod 16 is fixedly connected to the worm 18, the worm wheel 17 and the worm 18 are meshed with each other, There is a support plate 19, so that the rotation of the worm 18 can adjust the angle of the support plate 19, so that when it is idle, the support plate 19 can be folded up so that it does not affect the use of the hydraulic support. When the hydraulic support is working, the support plate 19 can be changed in angle by rotating the worm 18, so that the bottom end of the support plate 19 is placed on the ground, so that the support plate 19 plays a supporting role, so that the support plate 19 supports the ground, thereby increasing the force-bearing area of the hydraulic support, and the support plate 19 and the hydraulic support are in a triangular shape, so that the stability of the hydraulic support is further improved, and a circular rod 20 is rotatably connected to one side of the outer wall of the support plate 19 through the second block; a pair of auxiliary plates 21 are fixedly connected to the outer side wall of the circular rod 20;The first sprocket 22 is fixedly connected to one end of the outer wall of the circular rod 20 and the rotating rod 16, and the pair of first sprockets 22 are connected by the chain 23. When the rotating rod 16 rotates, because the first sprocket 22 is fixedly connected to one end of the outer wall of the circular rod 20 and the rotating rod 16, and the pair of first sprockets 22 are connected by the chain 23, the rotation of the rotating rod 16 will drive the circular rod 20 to rotate through the first sprocket 22 and the chain 23. Because the outer side wall of the circular rod 20 is fixedly connected to a pair of auxiliary plates 21, the rotation of the circular rod 20 will drive the auxiliary plates 21 to adjust the angle, so that when the device adjusts the support plate 19 to support the ground, the auxiliary plates 21 will also adjust the angle, so that when the support plate 19 is adjusted to a certain position, the auxiliary plates 21 It will be parallel to the ground and against the ground, thereby increasing the force-bearing area of the support plate 19 and making the hydraulic support more stable. When the support plate 19 and the auxiliary plate 21 are not needed, the worm 18 is reversed to reverse the rotating rod 16 and the circular rod 20, so that when the support plate 19 moves upward to retract, the auxiliary plate 21 will also adjust the angle to retract, thereby overlapping with the support plate 19. Therefore, when the support plate 19 and the auxiliary plate 21 are not needed, not only the occupied space is reduced, but also the normal operation of the hydraulic support is not easily affected. A motor 11 is fixedly connected to one side of the outer wall of the lower sliding shell 2 through a fixing block; a double-threaded rotating shaft 12 is provided at the output end of the motor 11, and one end of the outer wall of the double-threaded rotating shaft 12 passes through one side of the outer wall of the lower sliding shell 2 and A pair of lower sliding blocks 4, a double-threaded shaft 12 is threadedly connected to the pair of lower sliding blocks 4; the outer side walls of the pair of lower sliding blocks 4 are slidably connected to the inner side walls of the lower sliding shell 2; the outer side walls of the pair of upper sliding blocks 5 are slidably connected to the inner side walls of the upper sliding shell 3. When the hydraulic support rises or falls, the double-threaded shaft 12 is driven to rotate by the rotation of the motor 11. Because the double-threaded shaft 12 is threadedly connected to the pair of lower sliding blocks 4, the rotation of the double-threaded shaft 12 will drive the pair of lower sliding blocks 4 to move toward the center or both sides at the same time, thereby driving the telescopic frame 6 to change the angle and adjust the height, so that the telescopic frame 6 can adjust the height according to the height of the hydraulic support, thereby making the device more flexible and enabling the hydraulic support to be adjusted according to the existing situation. When adjusting the height, the device can change the shape and height of the telescopic frame 6 at any time through the double-threaded rotating shaft 12 to cooperate with the hydraulic support to enhance stability, so as to make the device more convenient. A pair of first bevel gears 13 are fixedly connected to the outer wall of the double-threaded rotating shaft 12, and the pair of first bevel gears 13 are both located in the lower sliding shell 2; the bottom ends of the outer walls of the pair of square shells 7 are fixedly connected to the top ends of the outer walls of the lower sliding shell 2; the outer walls of the pair of square columns 8 are respectively slidably connected to the inner walls of the pair of square shells 7; the bottom ends of the outer walls of the pair of square shells 7 are rotatably connected to the first threaded rods 14; the bottom ends of the outer walls of the pair of first threaded rods 14 are fixedly connected to the second bevel gears 15, and the pair of second bevel gears 15 are respectively meshed with the pair of first bevel gears 13;The top of the outer wall of the first threaded rod 14 passes through the square shell 7 and the square column 8 and is located in the circular groove 9, and the first threaded rod 14 is threadedly connected with the square column 8. When the double-threaded shaft 12 rotates to adjust the height of the telescopic frame 6, the rotation of the double-threaded shaft 12 will also drive the first bevel gear 13 to rotate, so that the rotation of the first bevel gear 13 drives the second bevel gear 15 to rotate, and the rotation of the second bevel gear 15 drives the first threaded rod 14 to rotate. Because the first threaded rod 14 is threadedly connected with the square column 8 and the shape of the square column 8 makes it impossible to rotate in the square shell 7, the rotation of the first threaded rod 14 makes the square column 8 only move up and down, so that when the device raises the telescopic frame 6, the square column 8 will also rise, and when the telescopic frame 6 is lowered, the square column 8 will fall, so that the spring and buffer column 10 on the square column 8 can maintain sufficient elasticity, so that the support, buffering and pressure relief effects on the hydraulic support will not change, so that the hydraulic support will not change height, thereby reducing the stability of the buffer column 10 and the spring. ;
[0025] Working principle: The lower sliding shell 2 is fixedly connected to both sides of the outer wall of the base of the hydraulic support body 1; the upper sliding shell 3 is fixedly connected to both sides of the outer wall of the top beam plate of the hydraulic support body 1, and the upper and lower sliding blocks 4 are slidably connected in the upper and lower sliding blocks 4, and the telescopic frame 6 is rotatably connected to the upper and lower sliding blocks 4, and the overall structure of the telescopic frame 6 has multiple triangular shapes, thereby improving the overall stability of the hydraulic support, and the top beam plate of the hydraulic support is supported by the structure of the square column 8 and the buffer column 10 and the spring and the upper sliding shell 3, so that the top beam plate of the hydraulic support is more stable. The hydraulic support is more stable, and the buffer column 10 and the spring can buffer and release pressure, thereby further improving the overall stability of the hydraulic support through the overall structure of the device, and when the hydraulic support needs to adjust the height, the double-threaded shaft 12 is driven to rotate by the rotation of the motor 11. Because the double-threaded shaft 12 is threadedly connected with a pair of lower sliding blocks 4, the rotation of the double-threaded shaft 12 will drive the pair of lower sliding blocks 4 to move toward the center or both sides at the same time, thereby driving the telescopic frame 6 to change the angle and adjust the height, so that the telescopic frame 6 can be adjusted according to the height of the hydraulic support. When the double-threaded shaft 12 is rotated to adjust the height of the telescopic frame 6, the rotation of the double-threaded shaft 12 will also drive the first bevel gear 13 to rotate, so that the rotation of the first bevel gear 13 drives the second bevel gear 15 to rotate, and the rotation of the second bevel gear 15 drives the first threaded rod 14 to rotate. Because the first threaded rod 14 is threadedly connected to the square column 8 and the shape of the square column 8 makes it impossible to rotate in the square shell 7, the rotation of the first threaded rod 14 causes the square column 8 to only move up and down, so that when the device raises the telescopic frame 6, the square column 8 will also rise, When the retractable frame 6 is lowered, the square column 8 will drop, so that the spring and buffer column 10 on the square column 8 can maintain sufficient elasticity, so that when the hydraulic support changes height, the telescopic frame 6 and the square column 8 will also change height at the same time, so that the spring and buffer column 10 on the telescopic frame 6 and the square column 8 can maintain a stable state, so that when the hydraulic support changes height, the device can still play a stabilizing role, making the device not only more flexible, but also more convenient, and the opposite sides of the outer wall of a pair of lower sliding shells 2 are rotatably connected to the rotating rod 16 through the connecting block;A worm wheel 17 is fixedly connected to one end of the outer wall of the rotating rod 16, so that when the worm 18 is rotated, the worm wheel 17 and the worm 18 are meshed with each other, so that the rotation of the worm 18 will drive the worm wheel 17 to rotate, thereby causing the rotation of the worm wheel 17 to drive the rotating rod 16 to rotate. Because the outer side wall of the rotating rod 16 is fixedly connected with a support plate 19, the rotation of the worm 18 can adjust the angle of the support plate 19, so that when it is idle, the support plate 19 can be retracted so that it does not affect the use of the hydraulic support. When the hydraulic support is working, the support plate 19 can be changed in angle by rotating the worm 18, so that the bottom end of the support plate 19 is against the ground, so that the support plate 19 plays a supporting role, so that the support plate 19 supports the ground, thereby increasing the force bearing area of the hydraulic support and making it more stable. The support plate 19 and the hydraulic support form a triangular shape, so that the stability of the hydraulic support is further improved. When the rotating rod 16 rotates, the circular rod 20 and one end of the outer wall of the rotating rod 16 are fixedly connected with the first sprocket 22, and a pair of first chain The wheels 22 are connected by chains 23, so that the rotation of the rotating rod 16 will drive the circular rod 20 to rotate through the first sprocket 22 and the chain 23. Because the outer wall of the circular rod 20 is fixedly connected with a pair of auxiliary plates 21, the rotation of the circular rod 20 will drive the auxiliary plates 21 to adjust their angles, so that when the device adjusts the angle of the support plate 19 and the support plate 19 supports the ground, the auxiliary plates 21 will also adjust their angles, so that when the support plate 19 is adjusted to a certain position, the auxiliary plates 21 will be parallel to the ground and against the ground, thereby increasing the force-bearing area of the support plate 19, making the hydraulic support more stable, and when the support plate 19 and the auxiliary plates 21 are not needed, the worm 18 is reversed to reverse the rotating rod 16 and the circular rod 20, so that the support plate 19 moves upward to retract, and the auxiliary plates 21 will also adjust their angles to retract, thereby overlapping with the support plate 19, so that when the support plate 19 and the auxiliary plates 21 are not needed, not only the occupied space is reduced, but also the normal operation of the hydraulic support is not easily affected. ;
[0026] The preferred embodiments of the utility model disclosed above are only used to help explain the utility model. The preferred embodiments do not describe all the details in detail, nor do they limit the utility model to only specific implementation methods. Obviously, many modifications and changes can be made according to the content of this specification. This specification selects and specifically describes these embodiments in order to better explain the principles and practical applications of the utility model, so that technicians in the relevant technical field can well understand and use the utility model. The utility model is limited only by the claims and their full scope and equivalents.
Claims
1. A support stability structure for a hydraulic support, comprising a hydraulic support body (1); lower sliding shells (2) are fixedly connected to both sides of the outer wall at the base of the hydraulic support body (1); upper sliding shells (3) are fixedly connected to both sides of the outer wall at the top beam plate of the hydraulic support body (1); It is characterized in that The inner side wall of the lower sliding shell (2) is provided with a pair of lower sliding blocks (4), and the lower sliding blocks (4) are in an L shape; the inner side wall of the upper sliding shell (3) is provided with a pair of upper sliding blocks (5), and the upper sliding blocks (5) are in an inverted L shape; one side of the inner wall of the pair of lower sliding blocks (4) is rotatably connected to a telescopic frame (6) through a pair of first rotating rods, and one side of the outer wall at the top of the telescopic frame (6) is rotatably connected to one side of the inner wall of the pair of upper sliding blocks (5) through a pair of second rotating rods; square columns (8) are provided at both ends of the top end of the outer wall of the lower sliding shell (2) through a square shell (7); a circular groove (9) is provided at the top end of the outer wall of the square column (8); a buffer column (10) is fixedly connected to the bottom end of the inner wall of the circular groove (9) through a spring, and the top end of the outer wall of the buffer column (10) is fixedly connected to the bottom end of the outer wall of the upper sliding shell (3).
2. The support stability structure for a hydraulic support according to claim 1, It is characterized in that A motor (11) is fixedly connected to one side of the outer wall of the lower sliding shell (2) via a fixing block; a double-threaded rotating shaft (12) is provided at the output end of the motor (11), and one end of the outer wall of the double-threaded rotating shaft (12) penetrates one side of the outer wall of the lower sliding shell (2) and a pair of lower sliding blocks (4), and the double-threaded rotating shaft (12) is threadedly connected to the pair of lower sliding blocks (4); the outer side walls of the pair of lower sliding blocks (4) are both slidably connected to the inner side wall of the lower sliding shell (2); and the outer side walls of the pair of upper sliding blocks (5) are both slidably connected to the inner side wall of the upper sliding shell (3).
3. The support stability structure for a hydraulic support according to claim 2, It is characterized in that A pair of first bevel gears (13) are fixedly connected to the outer wall of the double-threaded rotating shaft (12), and the pair of first bevel gears (13) are both located in the lower sliding shell (2); the outer wall bottom ends of the pair of square shells (7) are fixedly connected to the outer wall top end of the lower sliding shell (2); the outer wall of the pair of square columns (8) are respectively slidably connected to the inner wall of the pair of square shells (7); the outer wall bottom ends of the pair of square shells (7) are rotatably connected to the first threaded rod (14); the outer wall bottom ends of the pair of first threaded rods (14) are fixedly connected to the second bevel gears (15), and the pair of second bevel gears (15) are respectively meshed with the pair of first bevel gears (13); the outer wall top end of the first threaded rod (14) passes through the square shell (7) and the square column (8) and is located in the circular groove (9), and the first threaded rod (14) is threadedly connected to the square column (8).
4. The support stability structure for a hydraulic support according to claim 3, It is characterized in that The outer walls of a pair of lower sliding shells (2) are rotatably connected to a rotating rod (16) at opposite sides via a connecting block; a worm wheel (17) is fixedly connected to one end of the outer wall of the rotating rod (16); a worm (18) is rotatably connected to one side of the outer wall of the lower sliding shell (2) via a first block, and the worm wheel (17) and the worm (18) are meshed with each other; and a support plate (19) is fixedly connected to the outer side wall of the rotating rod (16).
5. The support stability structure for a hydraulic support according to claim 4, It is characterized in that One side of the outer wall of the support plate (19) is rotatably connected to a circular rod (20) via a second block; a pair of auxiliary plates (21) are fixedly connected to the outer side wall of the circular rod (20); one end of the outer wall of the circular rod (20) and the rotating rod (16) are both fixedly connected to a first sprocket (22), and the pair of first sprockets (22) are connected via a chain (23).