System and method for correcting forward inclination of hydraulic support on inclined working face through rotation of basic top

Abstract

The invention discloses a system and method for correcting forward inclination of a hydraulic support on an inclined working face through rotation of a basic top. A rotating shaft is connected to the top of a fixed supporting frame through a bearing. The winding drum shell covers the rotating shaft, a primary winding drum mounting cavity and a secondary winding drum mounting cavity are formed in the winding drum shell, and a primary winding drum and a secondary winding drum are rotatably connected into the primary winding drum mounting cavity and the secondary winding drum mounting cavity; the primary winding drum is connected with the rotating shaft, and the rotating shaft is connected with the secondary winding drums through the gear transmission assemblies; a rope locking assembly is arranged on a drum body of each winding drum; the rotary arm is fixedly connected to a drum body of the primary winding drum; the plurality of inhaul cable assemblies are correspondingly connected with the plurality of winding drums; the thorn shaft is fixedly connected to the bottom of the fixed supporting frame. The two thorn wheels are fixedly arranged at the two ends of the thorn wheel shaft in a sleeving mode respectively. The broken basic top is used for pressing down a bearing plate which is installed on the rotary arm and directly makes contact with the basic top, all the winding drums are driven to rotate, and the hydraulic support is pulled through all the pairs of inhaul cables. The posture of the hydraulic support can be automatically corrected.

Description

Technical Field

[0001] The present invention belongs to the technical field of intelligent mining machinery, and specifically provides a system and method for correcting the forward tilt of a hydraulic support on a pitched working surface by utilizing basic top rotation. Background Art

[0002] In the inclined working face of mining, hydraulic supports, as the main supporting equipment, often slide or tip over toward the coal body due to factors such as geological conditions and mining technology, resulting in instability of the support structure, which in turn may cause the risk of roof accidents, seriously affecting the safe and efficient production operations of the working face. In the existing technology, the device structure for correcting the forward tilt of hydraulic supports is often relatively complex, and the correction process often requires manual intervention or the addition of additional power sources. At the same time, the action process is single, and it is difficult to achieve synchronous correction operations of multiple hydraulic supports. In addition, such correction devices are inconvenient to move and need to be frequently disassembled and assembled, which obviously increases the labor intensity and safety risks of workers. Furthermore, traditional devices and methods have insufficient utilization of the basic top pressure, resulting in low correction efficiency and high cost. Therefore, there is an urgent need to provide a system and method that can efficiently and automatically correct the forward tilt of hydraulic supports to solve the stability problem in the process of hydraulic support support of inclined working faces. Summary of the Invention

[0003] In response to the problems existing in the above-mentioned prior art, the present invention provides a system and method for correcting the forward tilt of a hydraulic support on a pitched working surface by utilizing basic top rotation. The system has a simple structure and low manufacturing cost. It can effectively correct the problem of the hydraulic support on a pitched working surface sliding and tipping toward the coal body side, and can effectively save the cost of correcting the sliding and forward tilt of the hydraulic support. The method has a simple implementation process and low implementation cost. After the hydraulic support slips and tilts, it can use the downward force generated by the basic top rotation to pull the support back to its original position, and can automatically correct the sliding and tilting posture of the hydraulic support, thereby ensuring the safety and stability of the support of the hydraulic support.

[0004] In order to achieve the above object, the present invention provides a system for correcting the forward tilt of a hydraulic support on a pitched working surface by using basic top rotation, comprising a fixed support frame, a multi-stage drum, a rotary arm, a cable assembly and a lance assembly; The multi-stage reel is arranged on the top of the fixed support frame, and includes a rotating shaft, a reel shell, a primary reel, a secondary reel, a gear transmission assembly and a locking rope assembly; the rotating shaft is horizontally arranged at the axis center of the multi-stage reel, and its two ends are connected to the top of the fixed support frame through two bracket bearings; the reel shell cover is arranged on the outside of the rotating shaft and is fixedly connected to the fixed support frame, and a primary reel mounting cavity is opened in its central area, and multiple pairs of secondary reel mounting cavities are opened symmetrically in sequence from the central area to the outside on both sides, and at the same time, a primary arc groove is opened in the central area of ​​the upper part of the reel shell corresponding to the primary reel mounting cavity, and a secondary arc groove is opened in the central area of ​​the corresponding secondary reel mounting cavity; the outer cylindrical end of the primary reel is rotatably connected to the primary reel mounting cavity through a primary bearing. The inner axis of the gear is fixedly sleeved on the outer side of the rotating shaft through a rotating bracket; the outer circumferential end portions of the multiple pairs of secondary reels are rotatably connected to the inner sides of the corresponding multiple pairs of secondary reel mounting cavities through multiple pairs of secondary bearings; multiple pairs of gear transmission assemblies are respectively arranged corresponding to the multiple pairs of secondary reels, and the gear transmission assemblies include spur gear 1, inner gear ring, spur gear 2 and spur gear 3; the spur gear 1 is fixedly sleeved on the rotating shaft, and the inner gear ring is coaxially mounted on the inner circumferential surface of the secondary reel. The spur gear 2 and spur gear 3 are arranged in sequence from the inside to the outside, and the transmission shafts at the centers of the two are respectively connected to the side walls of the corresponding secondary reel mounting cavity through three-stage bearings and four-stage bearings. At the same time, the spur gear 1, spur gear 2, spur gear 3 and the inner gear ring are meshed in sequence; multiple rope locking assemblies are respectively arranged in one-to-one correspondence with the multiple reels; the rope locking assembly includes a locking hole and a lock, the locking hole is opened in the middle of the front side barrel of each reel, and the lock is installed in the locking hole, which includes two opposing conical clips installed in the inner cavity of the sleeve; The slewing arm is obliquely arranged at the middle of the rear body of the first-stage reel, and its lower end is fixedly connected to the body of the first-stage reel, and its upper end is hinged with a pressure plate; A plurality of cable assemblies are provided corresponding to the plurality of drums, the cable assemblies comprising a pair of cables and a pair of hooks, the fixed ends of the pair of cables extending into the lock holes and being fixedly clamped in the lock holes by two conical clips, and the pair of hooks being fixedly connected to the connecting ends of the pair of cables; The spur assembly comprises a spur shaft and two spurs. The spur shaft is fixedly connected to the bottom of the fixed support frame; the two spurs are fixedly sleeved on the two end portions of the spur shaft respectively.

[0005] Furthermore, in order to be able to promptly remind relevant workers by means of an alarm when the cable is abnormal or the hydraulic support posture is abnormal, so as to achieve the purpose of timely response to abnormal working conditions, an automatic alarm component is also included; the automatic alarm component includes a limit block and an alarm trigger, the limit block is correspondingly arranged below the slewing arm and is fixedly installed on the drum shell, and the alarm trigger is installed on the upper end face of the limit block.

[0006] Furthermore, in order to ensure a stable and reliable connection between the cable and the front end of the hydraulic support top beam, and at the same time, to avoid the cable being accidentally pulled, it also includes multiple sets of support connection mechanisms, and the multiple sets of support connection mechanisms are respectively arranged corresponding to multiple drums; the support connection mechanism includes a guide cable wheel, a triangular pull block and a cable guide, a pair of guide cable wheels are connected to the tail of the hydraulic support top beam at intervals in the width direction, a pair of triangular pull blocks are installed at the front end of the hydraulic support top beam at intervals in the width direction, and multiple pairs of cable guides are distributed between the guide cable wheels and the triangular pull blocks. and are installed on the top beam of the hydraulic support at equal intervals in sequence; the rope guide includes a rope guide box body and a locking wheel, the rope guide box body is in a cubic shape, with a through wire passage on two opposite sides of the middle, and an inspection door on the side; the two locking wheels are relatively distributed on both sides of the wire passage, and are rotatably connected to the inner cavity of the rope guide box body through the rotating shaft at the center thereof, and the two locking wheels are fixedly connected to a meshing tooth group on the opposite side, and the distance from the multiple teeth in the meshing tooth group to the axis of the locking wheel gradually decreases along the pulling direction of the cable; The connecting ends of a pair of cables in each cable assembly are first wound around a pair of cable guide wheels, and then sequentially pass through the wire passages in multiple pairs of cable guides, and a pair of hooks in each cable assembly are respectively connected to a pair of triangular pull blocks.

[0007] Furthermore, in order to facilitate the synchronous following action during the movement of the hydraulic support, it also includes a hanging ring and a traction chain, and multiple hanging rings are distributed corresponding to multiple reels and are fixedly connected to the prong shaft; multiple traction chains are arranged corresponding to multiple cable assemblies, and each traction chain is respectively connected to the base of the corresponding hydraulic support and the hanging ring on the prong shaft.

[0008] As a preference, the outer diameters of the multiple pairs of secondary reels increase sequentially from the central area toward both sides, and the outer diameters of each pair of secondary reels are the same.

[0009] As a preference, under normal conditions of the multi-stage reels, the positions of the multiple rope locking assemblies are raised successively from the central area to both sides, and the positions of the two rope locking assemblies on each pair of secondary reels are at the same height.

[0010] As a preference, the alarm trigger is an audible and visual alarm or a wireless signal transmitter. When it is a wireless signal transmitter, it also includes a wireless signal receiver, a controller and a buzzer alarm, and the controller is connected to the wireless signal receiver and the buzzer alarm respectively.

[0011] Furthermore, in order to facilitate the fixed support frame to sink after the basic top, the prongs at its bottom can penetrate into the bottom plate more efficiently and deeply. At the same time, in order to be able to use the traction chain connecting the hydraulic support and the fixed support frame to smoothly pull the prongs out from the bottom plate when moving the hydraulic support, so as to avoid workers from going to the dangerous area of ​​mining to perform on-site operations. While ensuring the improvement of work efficiency, it can also effectively improve the safety factor of the operation. The prongs of the prongs are bent in the opposite direction of the forward direction of the fixed support frame, with an arc of 25° to 35°; the cable is a steel wire rope.

[0012] In the present invention, the rotating shaft is connected to the fixed support frame via two bracket bearings, which can ensure that the resistance during the rotation of the rotating shaft is minimized and the rotation process is stable. A reel housing is provided on the outside of the rotating shaft. At the same time, a primary reel mounting cavity and multiple pairs of secondary reel mounting cavities are provided from the middle to both sides of the reel housing. The primary reel and multiple pairs of secondary reels are connected therein via a primary bearing and multiple pairs of secondary bearings, respectively. In this way, each reel can be ensured to rotate smoothly relative to the reel housing. The primary reel is fixedly connected to the rotating shaft through a rotating bracket, and a plurality of spur gears 1 are respectively installed in the secondary reel mounting cavity on the rotating shaft. At the same time, the inner circumference of each secondary reel is fixedly connected to the inner gear ring. Then, spur gears 2 and 3 are sequentially arranged in each secondary reel mounting cavity, and spur gears 1, spur gear 2, spur gear 3 and the inner gear ring are sequentially meshed. In this way, a gear transmission connection is achieved between the multiple reels. Therefore, when any one of the reels rotates, it can act on each reel through the rotating shaft and the plurality of gear transmission assemblies, thereby achieving the synchronous rotation of the multiple reels. On this basis, a cable is used to establish a connection between the multiple reels and the multiple hydraulic supports, which is conducive to the synchronous pulling operation of the multiple hydraulic supports through the rotation of the multiple reels. A primary arc groove is opened at the upper part of the primary reel mounting cavity to provide a channel for the rotating arm and the cable connected to the primary reel, which can prevent the rotating arm and the cable from causing adverse interference with the rotation process of the primary reel. A secondary arcuate groove is provided in the upper portion of the secondary drum mounting cavity, providing a passage for the cable connected to the secondary drum, preventing the cable from interfering with the secondary drum's rotation. Each drum body is slotted and a lock containing two opposing tapered clips is installed into the lock hole on the drum body. To connect the cable end to the drum, simply insert the cable end into the lock hole and apply a certain preload. The tapered clips then quickly and securely secure the cable end to the lock, thus achieving a reliable connection between the cable and drum. By fixing a swivel arm to the rear body of the primary drum, the swivel arm equipped with a pressure plate can be brought into direct contact with the basic top, and the downward swinging action of the basic top can be used to drive the swivel arm to drive the primary drum to rotate in the opposite direction of the hydraulic support. In this way, the hydraulic support can be pulled away from the coal body by the downward action of the swivel arm and the pulling action of the cable, thereby achieving the correction process of the hydraulic support's slip and forward tilt. Each cable assembly is provided with a pair of cables and a pair of hooks, which can facilitate the pair of hooks to be respectively hung at both ends of the hydraulic support in the width direction, and then the pair of cables are used to establish a connection between the pair of hooks and the drum. In this way, the hydraulic support can be ensured to translate in the direction away from the coal body during the pulling process without the hydraulic support shifting sideways, thereby ensuring the stability and safety of the hydraulic support.By connecting the lance shaft and two lances to the bottom of the fixed support frame, it is possible to facilitate the connection between the base of the hydraulic support and the lance shaft via a traction chain, and it is also possible to facilitate the insertion of the lances into the base plate, thereby providing a stable fixed support foundation for the fixed support frame. Using this system, when multiple pairs of cable assemblies are used to connect the multiple drums in the system to multiple hydraulic supports, the pressure caused by the basic top breaking and sinking can be effectively utilized to simultaneously address the problems of slippage and forward tilt of multiple hydraulic supports. Furthermore, when multiple traction chains are used to connect the lance shaft to the bases of multiple hydraulic supports in the system, it is possible to synchronously drive the system to perform follow-up operations during the hydraulic support's relocation process.

[0013] The system has a simple structure and low manufacturing cost. It can effectively correct the problem of hydraulic supports on the inclined working face sliding and tipping toward the coal body side, and can effectively save the cost of correcting the sliding and forward tilt of the hydraulic supports. At the same time, it can greatly improve the correction efficiency and labor cost of the sliding and forward tilt of the hydraulic supports, significantly improve the production efficiency of the inclined working face, and effectively improve the support effect of the working face, ensuring safe and efficient production operations on the working face.

[0014] The present invention also provides a method for correcting the forward tilt of a hydraulic support on a pitched working surface by using basic top rotation, which uses a system for correcting the forward tilt of a hydraulic support on a pitched working surface by using basic top rotation, comprising the following steps: Step 1: Arrange a system that uses basic top rotation to correct the forward tilt of the hydraulic support on the inclined working surface; S11: First, fix a pair of triangular pull blocks and a pair of cable guide wheels at the width ends of the head and tail of the hydraulic support top beam respectively, and fix multiple pairs of cable guides at equal intervals in the middle section of the hydraulic support top beam; then open the maintenance door on the side of each cable guide box body, first wrap a pair of cables around a pair of cable guide wheels, and then pass through the wire passages of the multiple pairs of cable guides in sequence; then, close the maintenance door, and then fix a pair of hooks on the pair of triangular pull blocks; S12: First, pull the pair of cables away from the hydraulic support and insert the other ends of the cables into the lock holes on a secondary drum or a primary drum. At the same time, use a pair of conical clips to fix the cables in the lock holes and pre-tighten them to ensure a secure connection. S13: Repeat S11 and S12 until connections between multiple hydraulic supports and multiple drums are established using multiple pairs of cables; S14: placing the fixed support frame in the tunnel, and at the same time, putting multiple pairs of cables in a preliminary tensioned state, and rotating the lock hole to the side of the drum body away from the hydraulic support, and then making the two lances initially penetrate into the bottom plate, and then using multiple traction chains to connect the bases of the multiple hydraulic supports and the multiple hanging rings on the lance shafts respectively; Step 2: Perform automatic correction of the forward-leaning hydraulic support; S21: When any hydraulic support slides or tilts toward the coal body, the fractured basic roof originally supported by the hydraulic support will sink. The corresponding pair of cables will be pulled and tightened by the forward-leaning hydraulic support, driving the corresponding secondary drum or primary drum to rotate. When the secondary drum is directly driven to rotate, it acts on the rotating shaft through the gear transmission assembly and drives the primary drum to rotate. When the primary drum rotates, it simultaneously drives the slewing arm to swing toward the basic roof until the pressure plate touches the basic roof. S22: Under the action of the downward pressure of the broken basic roof, the two thorn wheels located at the bottom of the fixed support frame are further penetrated into the bottom plate. At the same time, the slewing arm that is swung downward by the downward pressure of the broken basic roof synchronously drives the rotating shaft to rotate, and then drives multiple secondary drums to rotate synchronously through multiple gear transmission components. Through multiple pairs of cables, multiple hydraulic supports are pulled an equal distance to the side away from the coal body, and multiple forward-leaning hydraulic supports are corrected synchronously, and the top beams of multiple hydraulic supports are made close to the direct roof, thereby playing a role in stabilizing the support of the direct roof.

[0015] Furthermore, in order to remind relevant personnel to take necessary emergency measures in a timely manner through automatic alarm reminders when an abnormality occurs, in step two, when the slewing arm touches the alarm trigger on the limit block, the alarm trigger directly issues an alarm to remind workers in the nearby area. After receiving the alarm, the workers will promptly check and correct the posture of the hydraulic support, first remove the two prongs from the bottom plate, and then move the hydraulic support and correct its posture.

[0016] In the present invention, a pair of hooks connected to each pair of cables are respectively hung on the triangular pull blocks at both ends of the hydraulic support in the width direction, which can ensure that when the pair of cables is used to pull the hydraulic support, the hydraulic support as a whole only undergoes a translational movement without causing the hydraulic support to shift laterally, thereby ensuring the safety and reliability of the support and the correction effect. A pair of cable guide wheels and multiple pairs of equally spaced cable guides are installed at the tail end of the hydraulic support top beam. Each pair of cables is then passed around the cable guide wheels and through the wire passages in the multiple pairs of cable guides. The two locking wheels inside the cable guides can then be used to achieve a unidirectional locking action on each cable. In this way, when each pair of cables is used to pull the hydraulic support, it can be ensured that each pair of cables can stably act on both ends of the hydraulic support in the width direction, thereby ensuring that the hydraulic support as a whole can undergo a translational movement without causing the hydraulic support to shift laterally during the pulling process, thereby ensuring the stability of the hydraulic support during movement and the support effect of the hydraulic support. Using a spike that initially penetrates the bottom plate to provide a fixed support base for the fixed support frame can prevent the fixed support frame from slipping and ensure that the correction process of the hydraulic support can be carried out stably and reliably. When the hydraulic support slips or tilts toward the coal body, the rotation of the drum drives the movement of the slewing arm on the primary drum, and the sinking effect of the fractured basic top presses down the slewing arm on which the pressure plate is installed, thereby driving the drum to rotate away from the hydraulic support. This process can effectively use multiple pairs of cables to pull multiple hydraulic supports synchronously toward the side away from the coal body, achieving the purpose of correcting the slip and forward tilt of the hydraulic support. Using multiple traction chains to connect the bases of multiple hydraulic supports to the spike shaft at the bottom of the fixed support frame can facilitate pulling the fixed support frame through the traction chain when the hydraulic support is moved, thereby not only automatically pulling the spike from the bottom plate, but also synchronously driving the fixed support frame to move with it.

[0017] This method is simple to implement and has low implementation costs. After a hydraulic support slips or tilts forward, it can use the downward force generated by the basic top rotation to pull the support back to its original position. This automatically corrects the posture of the slipping and tilting hydraulic support, and can simultaneously correct the slippage and tilting problems of multiple supports, ensuring the safety and stability of the hydraulic support. Furthermore, this method can achieve a follow-up process with the movement of the hydraulic support through the pulling process of the traction chain, reducing the labor cost required during the movement process and improving production efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a schematic diagram of the connection state between the system and the hydraulic support in the present invention; Figure 2 It is a front view of the system of the present invention; Figure 3 is a side view of the system of the present invention; Figure 4 It is a cross-sectional view of the lock hole and the lock part of the present invention; Figure 5 It is a structural schematic diagram of the rope guide in the present invention.

[0019] Figure: 1. Multi-stage drum; 2. Fixed support frame; 3. Rotating shaft; 4. Bracket bearing; 5. Primary drum; 6. Drum housing; 7. Secondary drum; 8. Spur gear 1; 9. Spur gear 2; 10. Spur gear 3; 11. Internal gear ring; 12. Rope lock assembly; 13. Primary arc groove; 14. Secondary arc groove; 15. Rope lock assembly; 16. Cable assembly; 17. Lock hole; 18. Lock; 19. Cable; 20. Hook; 21. Conical clip; 22. Rotation Arm; 23. Pressure plate; 24. Razor assembly; 25. Razor shaft; 26. Razor; 27. Limit block; 28. Reimbursement trigger; 29. ​​Rope guide box; 30. Locking wheel; 31. Passing channel; 32. Engaging tooth group; 33. Gear teeth; 34. Pull rod; 35. Rope guide; 36. Triangular pull block; 37. Rope guide wheel; 38. Hydraulic support; 39. Traction chain; 40. Hydraulic support guard plate; 41. Broken basic top; 42. Direct top; 43. Coal body. DETAILED DESCRIPTION

[0020] The present invention will be further described below with reference to the accompanying drawings.

[0021] like Figures 1 to 5 As shown, the present invention provides a system for correcting the forward tilt of a hydraulic support on a pitched working surface by using basic top rotation, comprising a fixed support frame 2, a multi-stage drum 1, a rotary arm 22, a cable assembly 16 and a ratchet assembly 24; As a preferred embodiment, the fixed support frame 2 is a frame structure with multiple support legs, and multiple staggered tie rods 34 are provided at the bottom thereof. The multiple tie rods 34 are staggeredly connected to the lower support legs to ensure the overall bearing strength and support stability of the fixed support frame 2. Further preferably, the bottom of the fixed support frame 2 has four support legs, and the four tie rods 34 are staggeredly connected to the four support legs; The multi-stage reel 1 is arranged on the top of the fixed support frame 2, and includes a rotating shaft 3, a reel shell 6, a primary reel 5, a secondary reel 7, a gear transmission assembly and a locking rope assembly 15; the rotating shaft 3 is horizontally arranged at the axis center of the multi-stage reel 1, and its two ends are connected to the top of the fixed support frame 2 through two bracket bearings 4; the reel shell 6 is covered on the outside of the rotating shaft 3 and is fixedly connected to the fixed support frame 2, and a primary reel mounting cavity is opened in the central area thereof, and multiple pairs of secondary reel mounting cavities are opened symmetrically in sequence from the central area to the outside on both sides. At the same time, a primary arc groove 13 is opened in the central area corresponding to the primary reel mounting cavity, and a secondary arc groove 14 is opened in the central area corresponding to the secondary reel mounting cavity on the upper part of the reel shell 6; as a preferred embodiment, the radians of the corresponding central angles of the primary arc groove 13 and the secondary arc groove 14 are both 45°~60°.

[0022] The outer cylindrical end of the primary reel 5 is rotatably connected to the inside of the primary reel installation cavity through a primary bearing, and its internal axis is fixedly sleeved on the outside of the rotating shaft 3 through a rotating bracket; the outer cylindrical ends of multiple pairs of secondary reels 7 are rotatably connected to the inside of the corresponding multiple pairs of secondary reels installation cavities through multiple pairs of secondary bearings; multiple pairs of gear transmission assemblies are respectively arranged corresponding to the multiple pairs of secondary reels 7, and the gear transmission assembly includes a spur gear 1 8, an inner gear ring 11, a spur gear 2 9 and a spur gear 3 10; the spur gear 1 8 is fixedly sleeved on the rotating shaft 3, and the inner gear ring 1 1 is coaxially mounted on the inner circumference of the secondary reel 7, with the second spur gear 9 and the third spur gear 10 arranged sequentially from the inside to the outside, and the transmission shafts at the centers of the two are connected to the side walls of the corresponding secondary reel mounting cavity through the third and fourth bearings, respectively. At the same time, the first spur gear 8, the second spur gear 9, the third spur gear 10 and the inner ring gear 11 are meshed in sequence. As a preferred embodiment, the radius of the first spur gear 8 is inversely proportional to the radius of the corresponding secondary reel 7, and the radii of the second spur gear 9 and the third spur gear 10 are matched according to the gear transmission ratio to ensure that the linear speed of each reel is consistent. Multiple rope lock assemblies 15 are provided in a one-to-one correspondence with the multiple reels. The rope lock assemblies 15 include a lock hole 17 and a lock 18. The lock hole 17 is located in the middle of the front side of each reel. The lock 18 is installed in the lock hole 17 and comprises two opposing tapered clips 21 installed in the inner cavity of the sleeve. The swivel arm 22 is obliquely arranged at the middle of the rear body of the first-stage reel 5, and its lower end is fixedly connected to the body of the first-stage reel 5, and its upper end is hinged with a pressure plate 23; A plurality of cable assemblies 16 are provided corresponding to the plurality of drums. The cable assemblies include a pair of cables 19 and a pair of hooks 20. The fixed ends of the pair of cables 19 extend into the lock holes 17 and are fixedly clamped in the lock holes 17 by two tapered clips 21. The pair of hooks 20 are fixedly connected to the connecting ends of the pair of cables 19. The ratchet assembly 24 includes a ratchet shaft 25 and two ratchet wheels 26. The ratchet shaft 25 is fixedly connected to the bottom of the fixed support frame 2; the two ratchet wheels 26 are fixedly sleeved on the two ends of the ratchet shaft 25 through the mounting holes in the center thereof.

[0023] As a preference, the height of the fixed support frame 2 is adapted to the height of the lane. For example, for some lanes, the height of the fixed support frame 2 may be 600-1200 mm.

[0024] In order to be able to promptly remind relevant workers by means of an alarm when the cable is abnormal or the hydraulic support 38 is in an abnormal posture, so as to achieve the purpose of timely response to abnormal working conditions, an automatic alarm component is also included; the automatic alarm component includes a limit block 27 and an alarm trigger 28, the limit block 27 is correspondingly arranged below the rotating arm 22 and is fixedly installed on the drum housing 6, the alarm trigger 28 is installed on the upper end face of the limit block 27, and is used to issue an alarm when triggered by the rotating arm 22, so as to promptly prompt the operator to adjust the cable 19 or detect the posture of the hydraulic support 38.

[0025] In order to ensure a stable and reliable connection between the cable and the front end of the top beam of the hydraulic support 38, and at the same time, to avoid the cable being accidentally pulled, multiple sets of support connection mechanisms are also included, and the multiple sets of support connection mechanisms are respectively arranged corresponding to multiple drums; the support connection mechanism includes a guide cable wheel 37, a triangular pull block 36 and a cable guide 35, a pair of guide cable wheels 37 are connected to the tail of the top beam of the hydraulic support 38 at intervals in the width direction, and a pair of triangular pull blocks 36 are installed at the front end of the top beam of the hydraulic support 38 at intervals in the width direction, such as Figure 1 As shown in, at the same time, the triangular pull block 36 is located on the rear side of the hydraulic support guard plate 40, and multiple pairs of rope guides 35 are distributed between the rope guide wheel 37 and the triangular pull block 36, and are installed on the top beam of the hydraulic support 38 at equal intervals in sequence; the rope guide 35 includes a rope guide box body 29 and a locking wheel 30, and the rope guide box body 29 is cubical, with a through wire passage 31 on two opposite sides of the middle, and an inspection door on its side; the two locking wheels 30 are relatively distributed on both sides of the wire passage 31, and are rotatably connected to the inner cavity of the rope guide box body 29 through the rotating shaft at its center, and the two locking wheels 30 are fixedly connected to the opposite side with a bite tooth group 32, and the distance from the multiple teeth 33 in the bite tooth group 32 to the axis center of the locking wheel 30 gradually decreases along the pulling direction of the cable 19; as a preferred embodiment, the maximum spacing between the two locking wheels 30 is slightly larger than the outer diameter of the cable 19, and the minimum spacing is slightly smaller than the outer diameter of the cable 19.

[0026] The connecting ends of a pair of cables 19 in each cable assembly 16 are first passed through a pair of guide rope wheels 37, and then sequentially pass through the wire passages 31 in multiple pairs of rope guides 35, and the pair of hooks 20 in each cable assembly 16 are respectively connected to a pair of triangular pull blocks 36. In this way, multiple pairs of cables 19 in multiple cable assemblies 16 are correspondingly connected to multiple hydraulic supports 38.

[0027] In order to facilitate the synchronous follow-up movement of the hydraulic support 38 during its movement, it also includes a hanging ring and a traction chain 39. The hanging rings are distributed corresponding to the multiple reels and are fixedly connected to the ratchet shaft 25. The multiple traction chains 39 are arranged corresponding to the multiple cable assemblies 16, and each traction chain 39 is respectively connected to the base of the corresponding hydraulic support 38 and the hanging ring on the ratchet shaft 25. In this way, when the hydraulic support 38 is moved, the traction chain 39 can pull the ratchet shaft toward the hydraulic support 38. Under the action of the pulling force, the ratchet that has penetrated the bottom plate will also be smoothly separated from the bottom plate.

[0028] As a preferred embodiment, the outer diameters of the multiple pairs of secondary reels 7 increase sequentially from the central area toward both sides, and the outer diameters of each pair of secondary reels 7 are the same. The radius of the multiple pairs of secondary reels 7 is further determined by their distance from the hydraulic support 38 to ensure balanced tension during the rotation of the reels. As a preference, in the normal state of the multi-stage reel 1, the positions of the multiple rope locking assemblies 15 are successively increased from the central area to both sides, and the positions of the two rope locking assemblies 15 on each pair of secondary reels 7 are at the same height.

[0029] As a preference, the alarm trigger 28 is an audible and visual alarm or a wireless signal transmitter. When it is a wireless signal transmitter, it also includes a wireless signal receiver, a controller and a buzzer alarm. The controller is connected to the wireless signal receiver and the buzzer alarm respectively.

[0030] In order to facilitate the fixed support frame to sink after the basic top, the prongs at its bottom can penetrate into the bottom plate more efficiently and deeply. At the same time, in order to be able to use the traction chain 39 connecting the hydraulic support 38 and the fixed support frame to smoothly pull the prongs out from the bottom plate when moving the hydraulic support 38, so as to avoid workers from going to the dangerous area of ​​goaf for field operations. While ensuring the improvement of work efficiency, it can also effectively improve the safety factor of the operation. The prongs 26 are bent in the opposite direction of the forward direction of the fixed support frame 2, with an arc of 25°~35°. It is further preferred that the root width of the prongs of the prongs 26 is 100~150mm, and the length of the prongs is 200~300mm; the cable 19 is a steel wire rope, the length of which can be 2000~2500mm, and the outer diameter of which is 20~25mm.

[0031] In the present invention, the rotating shaft is connected to the fixed support frame via two bracket bearings, which can ensure that the resistance during the rotation of the rotating shaft is minimized and the rotation process is stable. A reel housing is provided on the outside of the rotating shaft. At the same time, a primary reel mounting cavity and multiple pairs of secondary reel mounting cavities are provided from the middle to both sides of the reel housing. The primary reel and multiple pairs of secondary reels are connected therein via a primary bearing and multiple pairs of secondary bearings, respectively. In this way, each reel can be ensured to rotate smoothly relative to the reel housing. The primary reel is fixedly connected to the rotating shaft through a rotating bracket, and a plurality of spur gears 1 are respectively installed in the secondary reel mounting cavity on the rotating shaft. At the same time, the inner circumference of each secondary reel is fixedly connected to the inner gear ring. Then, spur gears 2 and 3 are sequentially arranged in each secondary reel mounting cavity, and spur gears 1, spur gear 2, spur gear 3 and the inner gear ring are sequentially meshed. In this way, a gear transmission connection is achieved between the multiple reels. Therefore, when any one of the reels rotates, it can act on each reel through the rotating shaft and the plurality of gear transmission assemblies, thereby achieving the synchronous rotation of the multiple reels. On this basis, a cable is used to establish a connection between the multiple reels and the multiple hydraulic supports, which is conducive to the synchronous pulling operation of the multiple hydraulic supports through the rotation of the multiple reels. A primary arc groove is opened at the upper part of the primary reel mounting cavity to provide a channel for the rotating arm and the cable connected to the primary reel, which can prevent the rotating arm and the cable from causing adverse interference with the rotation process of the primary reel. A secondary arcuate groove is provided in the upper portion of the secondary drum mounting cavity, providing a passage for the cable connected to the secondary drum, preventing the cable from interfering with the secondary drum's rotation. Each drum body is slotted and a lock containing two opposing tapered clips is installed into the lock hole on the drum body. To connect the cable end to the drum, simply insert the cable end into the lock hole and apply a certain preload. The tapered clips then quickly and securely secure the cable end to the lock, thus achieving a reliable connection between the cable and drum. By fixing a swivel arm to the rear body of the primary drum, the swivel arm equipped with a pressure plate can be brought into direct contact with the basic top, and the downward swinging action of the basic top can be used to drive the swivel arm to drive the primary drum to rotate in the opposite direction of the hydraulic support. In this way, the hydraulic support can be pulled away from the coal body by the downward action of the swivel arm and the pulling action of the cable, thereby achieving the correction process of the hydraulic support's slip and forward tilt. Each cable assembly is provided with a pair of cables and a pair of hooks, which can facilitate the pair of hooks to be respectively hung at both ends of the hydraulic support in the width direction, and then the pair of cables are used to establish a connection between the pair of hooks and the drum. In this way, the hydraulic support can be ensured to translate in the direction away from the coal body during the pulling process without the hydraulic support shifting sideways, thereby ensuring the stability and safety of the hydraulic support.By connecting the lance shaft and two lances to the bottom of the fixed support frame, it is possible to facilitate the connection between the base of the hydraulic support and the lance shaft via a traction chain, and it is also possible to facilitate the insertion of the lances into the base plate, thereby providing a stable fixed support foundation for the fixed support frame. Using this system, when multiple pairs of cable assemblies are used to connect the multiple drums in the system to multiple hydraulic supports, the pressure caused by the basic top breaking and sinking can be effectively utilized to simultaneously address the problems of slippage and forward tilt of multiple hydraulic supports. Furthermore, when multiple traction chains are used to connect the lance shaft to the bases of multiple hydraulic supports in the system, it is possible to synchronously drive the system to perform follow-up operations during the hydraulic support's relocation process.

[0032] The system has a simple structure and low manufacturing cost. It can effectively correct the problem of hydraulic supports on the inclined working face sliding and tipping toward the coal body side, and can effectively save the cost of correcting the sliding and forward tilt of the hydraulic supports. At the same time, it can greatly improve the correction efficiency and labor cost of the sliding and forward tilt of the hydraulic supports, significantly improve the production efficiency of the inclined working face, and effectively improve the support effect of the working face, ensuring safe and efficient production operations on the working face.

[0033] The present invention also provides a method for correcting the forward tilt of a hydraulic support on a pitched working surface by using basic top rotation, which uses a system for correcting the forward tilt of a hydraulic support on a pitched working surface by using basic top rotation, comprising the following steps: Step 1: Arrange a system that uses basic top rotation to correct the forward tilt of the hydraulic support on the inclined working surface; S11: First, a pair of triangular pull blocks 36 and a pair of cable guide wheels 37 are respectively fixed to the width ends of the head and tail of the top beam of the hydraulic support 38, and multiple pairs of cable guides 35 are evenly fixed in the middle section of the top beam of the hydraulic support 38; then, the maintenance door on the side of each cable guide box 29 is opened, and a pair of cables 19 are first passed through the pair of cable guide wheels 37, and then sequentially passed through the wire passages 31 of the multiple pairs of cable guides 35; then, the maintenance door is closed, and then, a pair of hooks 20 are fixedly hung on the pair of triangular pull blocks 36; S12: First, pull the pair of cables 19 away from the hydraulic support 38, and extend the other ends of the pair of cables 19 into the lock hole 17 on one of the secondary reel 7 or the primary reel 5. At the same time, use a pair of conical clips 21 to fix the pair of cables 19 in the lock hole 17 and pre-tighten them to ensure a firm connection; S13: Repeat S11 and S12 until connections between the plurality of hydraulic supports 38 and the plurality of drums are established using a plurality of pairs of cables 19; S14: The fixed support frame 2 is placed in the tunnel. At the same time, the multiple pairs of cables 19 are initially tightened, and the lock hole 17 is rotated to the side of the drum body away from the hydraulic support 38. Then, the two lances 26 are initially inserted into the bottom plate. Then, multiple traction chains 39 are used to connect the bases of the multiple hydraulic supports 38 and the multiple hanging rings on the lance shaft 25 respectively. Step 2: Performing automatic correction of the forward-leaning hydraulic support 38; S21: When any hydraulic support 38 slides or tilts toward the coal body 43, the fractured basic roof 41 originally supported by the hydraulic support 38 will sink. The corresponding pair of cables 19 will be pulled and tightened by the forward-leaning hydraulic support 38, driving the corresponding secondary drum 7 or primary drum 5 to rotate. When the secondary drum 7 is directly driven to rotate, it acts on the rotating shaft 3 through the gear transmission assembly and drives the primary drum 5 to rotate. When the primary drum 5 rotates, it simultaneously drives the slewing arm 22 to swing toward the basic roof 41 until the pressure plate 23 touches the basic roof 41. S22: Under the downward pressure of the broken basic roof 41, the two spurs 26 at the bottom of the fixed support frame 2 are further penetrated into the bottom plate. At the same time, the slewing arm 22, which is swung downward by the broken basic roof 41, synchronously drives the rotating shaft 3 to rotate, and then synchronously drives the multiple secondary drums 7 to rotate through multiple gear transmission components. Multiple pairs of cables 19 are used to pull the multiple hydraulic supports 38 to the side away from the coal body 43 by an equal distance, thereby simultaneously correcting the multiple forward-leaning hydraulic supports 38 and making the top beams of the multiple hydraulic supports 38 close to the direct roof 42, providing stable support for the direct roof 42. After the correction operation of the hydraulic supports 38 is completed, the spurs 26 that penetrated the bottom plate are pulled out by the pulling chain 39, and the fixed support frame 2 is rearranged to prepare for the next slip and forward-leaning correction action.

[0034] In order to remind relevant personnel to take necessary emergency measures in time through automatic alarm reminders when an abnormality occurs, in step 2, when the rotating arm 22 touches the alarm trigger 28 on the limit block 27, the alarm trigger 28 directly issues an alarm to remind workers in the nearby area. After receiving the alarm, the workers will check and correct the posture of the hydraulic support in time, first remove the two prongs 26 from the bottom plate, and then move the hydraulic support 38 and correct its posture.

[0035] In the present invention, a pair of hooks 20 connected to each pair of cables 19 are respectively hung on the triangular pull blocks 36 at both ends of the hydraulic support 38 in the width direction, which can ensure that when the hydraulic support 38 is pulled by a pair of cables 19, the hydraulic support 38 as a whole only undergoes a translational movement, and the hydraulic support 38 will not shift sideways, thereby ensuring the safety and reliability of the support and, at the same time, ensuring the correction effect. A pair of cable guide pulleys 37 and multiple pairs of equally spaced cable guides 35 are installed opposite each other at the rear end of the top beam of the hydraulic support 38. Each pair of cables 19 is then passed around the cable guide pulleys 37 and through the wire passages 31 in the multiple pairs of cable guides 35. Two locking pulleys 30 within the cable guides 37 are then used to lock each cable 19 in one direction. This ensures that each pair of cables 19 can stably act on both ends of the width of the hydraulic support 38 during the pulling process, thereby ensuring that the hydraulic support 38 can move horizontally as a whole without lateral shifting. This ensures the stability of the hydraulic support 38 during movement and the support effect of the hydraulic support 38. The spike pulleys 26 initially inserted into the bottom plate provide a fixed support base for the fixed support frame 2, preventing the fixed support frame 2 from slipping and ensuring that the hydraulic support 38 can be corrected stably and reliably. When the hydraulic supports 38 slide or tilt toward the coal body 43, the rotation of the drum drives the slewing arm 22 on the primary drum 5 to move, and the sinking action of the broken basic top 41 presses down the slewing arm 22 on which the pressure plate 23 is mounted, thereby driving the drum to rotate away from the hydraulic supports 38. This process effectively pulls the multiple hydraulic supports 38 synchronously toward the side away from the coal body 43 using multiple pairs of cables 19, thereby correcting the slippage and forward tilt of the hydraulic supports 38. Multiple traction chains 39 are used to connect the bases of the multiple hydraulic supports 38 to the spur shaft 25 at the bottom of the fixed support frame 2. This facilitates the traction chains 39 to pull the fixed support frame 2 when the hydraulic supports 38 are moved, thereby not only automatically pulling the spur 26 from the bottom plate, but also synchronously driving the fixed support frame 2 to move with it.

[0036] This method is simple to implement and has low implementation costs. After a hydraulic support slips or tilts forward, it can use the downward force generated by the basic top rotation to pull the support back to its original position. This automatically corrects the posture of the slipping and tilting hydraulic support, and can simultaneously correct the slippage and tilting problems of multiple supports, ensuring the safety and stability of the hydraulic support. Furthermore, this method can achieve a follow-up process with the movement of the hydraulic support through the pulling process of the traction chain, reducing the labor cost required during the movement process and improving production efficiency.

Claims

1. A system for correcting the forward tilt of a hydraulic support on a pitched working surface by utilizing basic top rotation, comprising a fixed support frame (2), characterized in that: It also includes a multi-stage reel (1), a slewing arm (22), a cable assembly (16) and a ratchet assembly (24); The multi-stage reel (1) is arranged on the top of the fixed support frame (2), and comprises a rotating shaft (3), a reel shell (6), a primary reel (5), a secondary reel (7), a gear transmission assembly and a locking rope assembly (15); the rotating shaft (3) is horizontally arranged at the axis of the multi-stage reel (1), and its two ends are connected to the top of the fixed support frame (2) through two bracket bearings (4); the reel shell (6) is arranged on the outside of the rotating shaft (3) and is fixedly connected to the fixed support frame (2), and a primary reel installation cavity is opened in the central area thereof, and is provided with a central reel installation cavity. A plurality of pairs of secondary reel mounting cavities are symmetrically opened in the direction of the outer sides starting from the center area. At the same time, a primary arc groove (13) is opened in the center area of ​​the corresponding primary reel mounting cavity on the upper part of the reel shell (6), and a secondary arc groove (14) is opened in the center area of ​​the corresponding secondary reel mounting cavity. The outer cylindrical end of the primary reel (5) is rotatably connected to the inside of the primary reel mounting cavity through a primary bearing, and its internal axis is fixedly sleeved on the outside of the rotating shaft (3) through a rotating bracket. The outer cylindrical end of the plurality of pairs of secondary reels (7) is connected to the outside of the rotating shaft (3) through a plurality of pairs of The secondary bearing is rotatably connected to the interior of the corresponding multiple pairs of secondary reel mounting cavities; the multiple pairs of gear transmission assemblies are respectively arranged corresponding to the multiple pairs of secondary reels (7), and the gear transmission assemblies include a spur gear 1 (8), an inner gear ring (11), a spur gear 2 (9) and a spur gear 3 (10); the spur gear 1 (8) is fixedly sleeved on the rotating shaft (3), the inner gear ring (11) is coaxially mounted on the inner circumference of the secondary reel (7), the spur gear 2 (9) and the spur gear 3 (10) are arranged in sequence from the inside to the outside, and the transmission shafts at the centers of the two are respectively connected through The third-stage bearing and the fourth-stage bearing are connected to the side wall of the corresponding secondary reel installation cavity, and at the same time, the spur gear 1 (8), the spur gear 2 (9), the spur gear 3 (10) and the inner gear ring (11) are meshed in sequence; a plurality of rope locking assemblies (15) are respectively arranged in a one-to-one correspondence with the plurality of reels; the rope locking assemblies (15) include a locking hole (17) and a lock (18), the locking hole (17) is opened in the middle of the front side of each reel body, and the lock (18) is installed in the locking hole (17), which includes two opposite conical clips (21) installed in the inner cavity of the sleeve; The slewing arm (22) is obliquely arranged at the middle of the rear body of the first-stage reel (5), and its lower end is fixedly connected to the body of the first-stage reel (5), and its upper end is hinged to a pressure plate (23); A plurality of cable assemblies (16) are arranged corresponding to the plurality of drums, and the cable assemblies include a pair of cables (19) and a pair of hooks (20), wherein the fixed ends of the pair of cables (19) extend into the lock hole (17) and are fixedly clamped in the lock hole (17) by two conical clips (21), and the pair of hooks (20) are fixedly connected to the connection ends of the pair of cables (19); The spur assembly (24) comprises a spur shaft (25) and two spur wheels (26). The spur shaft (25) is fixedly connected to the bottom of the fixed support frame (2); and the two spur wheels (26) are fixedly sleeved on the two end portions of the spur shaft (25).

2. The system for correcting the forward tilt of a hydraulic support on a pitched working surface by using basic top rotation according to claim 1, characterized in that: It also includes an automatic alarm component; the automatic alarm component includes a limit block (27) and an alarm trigger (28), the limit block (27) is correspondingly arranged below the rotary arm (22) and fixedly installed on the reel shell (6), and the alarm trigger (28) is installed on the upper end surface of the limit block (27).

3. A system for correcting the forward tilt of a hydraulic support on a pitched working surface by using basic top rotation according to claim 1 or 2, characterized in that: The invention also includes a plurality of support connection mechanisms, wherein the plurality of support connection mechanisms are respectively arranged corresponding to the plurality of drums; the support connection mechanisms include a guide cable wheel (37), a triangular pull block (36) and a cable guide (35); a pair of guide cable wheels (37) are connected to the tail of the top beam of the hydraulic support (38) at intervals in the width direction; a pair of triangular pull blocks (36) are installed at the front end of the top beam of the hydraulic support (38) at intervals in the width direction; a plurality of pairs of cable guides (35) are distributed between the guide cable wheels (37) and the triangular pull blocks (36), and are sequentially installed on the top beam of the hydraulic support (38) at equal intervals; the cable guide (35) The invention comprises a guide cable box body (29) and a locking wire wheel (30), wherein the guide cable box body (29) is in a cubic shape, and a through wire passage (31) is provided on two opposite sides of the middle thereof, and an inspection door is provided on the side thereof; the two locking wire wheels (30) are relatively distributed on both sides of the wire passage (31), and are rotatably connected to the inner cavity of the guide cable box body (29) through the rotating shaft at the center thereof; the two locking wire wheels (30) are fixedly connected to a meshing tooth group (32) on the opposite side, and the distance between the multiple teeth (33) in the meshing tooth group (32) and the axis center of the locking wire wheel (30) gradually decreases along the pulling direction of the cable (19); The connecting ends of a pair of cables (19) in each cable assembly (16) are first wound around a pair of cable guide wheels (37) and then sequentially passed through the wire passages (31) in the plurality of pairs of cable guides (35), and a pair of hooks (20) in each cable assembly (16) are respectively connected to a pair of triangular pull blocks (36).

4. The system for correcting the forward tilt of a hydraulic support on a pitched working surface by using basic top rotation according to claim 3, characterized in that: It also includes a hanging ring and a traction chain (39), wherein the plurality of hanging rings are distributed corresponding to the plurality of reels and are fixedly connected to the spur shaft (25); the plurality of traction chains (39) are arranged corresponding to the plurality of cable assemblies (16), and each traction chain (39) is respectively connected to the base of the corresponding hydraulic support (38) and the hanging ring on the spur shaft (25).

5. The system for correcting the forward tilt of a hydraulic support on a pitched working surface by using basic top rotation according to claim 1, characterized in that: The outer diameters of the multiple pairs of secondary reels (7) increase sequentially from the central area toward both sides, and the outer diameters of each pair of secondary reels (7) are the same.

6. The system for correcting the forward tilt of a hydraulic support on a pitched working surface by utilizing basic top rotation according to claim 1, characterized in that: In the normal state of the multi-stage reel (1), the positions of the multiple locking rope assemblies (15) are successively raised from the central area to the two sides, and the positions of the two locking rope assemblies (15) on each pair of secondary reels (7) are at the same height.

7. The system for correcting the forward tilt of a hydraulic support on a pitched working surface by using basic top rotation according to claim 1, characterized in that: The alarm trigger (28) is an audible and visual alarm or a wireless signal transmitter. When it is a wireless signal transmitter, it also includes a wireless signal receiver, a controller and a buzzer alarm. The controller is connected to the wireless signal receiver and the buzzer alarm respectively.

8. The system for correcting the forward tilt of a hydraulic support on a pitched working surface by using basic top rotation according to claim 1, characterized in that: The thorn claws of the thorn wheel (26) are bent in the opposite direction of the forward direction of the fixed support frame (2), with an arc of 25° to 35°; the pull rope (19) is a steel wire rope.

9. A method for correcting the forward tilt of a hydraulic support on a pitched working surface by using basic top rotation, using the system for correcting the forward tilt of a hydraulic support on a pitched working surface by using basic top rotation as claimed in claim 4, characterized in that: The following steps are involved: Step 1: Arrange a system that uses basic top rotation to correct the forward tilt of the hydraulic support on the inclined working surface; S11: First, a pair of triangular pull blocks (36) and a pair of guide rope wheels (37) are respectively fixed to the width direction ends of the head and tail of the top beam of the hydraulic support (38), and multiple pairs of guide ropes (35) are fixed at equal intervals in the middle section of the top beam of the hydraulic support (38); then, the inspection door on the side of each guide rope box (29) is opened, and a pair of cables (19) are first passed through a pair of guide rope wheels (37), and then sequentially passed through the wire passages (31) in the multiple pairs of guide ropes (35); then, the inspection door is closed, and then, a pair of hooks (20) are fixedly hung on the pair of triangular pull blocks (36); S12: First, pull the pair of cables (19) in a direction away from the hydraulic support (38), and extend the other ends of the pair of cables (19) into a lock hole (17) on a secondary reel (7) or a primary reel (5). At the same time, use a pair of conical clips (21) to fix the pair of cables (19) in the lock hole (17) and pre-tighten them to ensure a firm connection; S13: Repeat S11 and S12 until connections between the plurality of hydraulic supports (38) and the plurality of drums are established using a plurality of pairs of cables (19); S14: placing the fixed support frame (2) in the tunnel, and at the same time, making the multiple pairs of cables (19) in a preliminary tensioned state, and rotating the lock hole (17) to the side of the drum body away from the hydraulic support (38), and then making the two thorn wheels (26) initially penetrate into the bottom plate, and then using multiple traction chains (39) to respectively connect the bases of the multiple hydraulic supports (38) and the multiple hanging rings on the thorn wheel shaft (25); Step 2: Performing automatic correction operation of the forward tilting hydraulic support (38); S21: When any hydraulic support (38) slides or tilts toward the coal body (43), the fractured basic top (41) originally supported by the hydraulic support (38) will sink, and the corresponding pair of cables (19) will be pulled and tightened by the forward-leaning hydraulic support (38), driving the corresponding secondary drum (7) or primary drum (5) to rotate. When the secondary drum (7) is directly driven to rotate, it acts on the rotating shaft (3) through the gear transmission assembly and drives the primary drum (5) to rotate. When the primary drum (5) rotates, it simultaneously drives the slewing arm (22) to swing toward the basic top (41) until the pressure plate (23) touches the basic top (41); S22: Under the action of the downward pressure of the broken basic top (41), the two thorn wheels (26) located at the bottom of the fixed support frame (2) are further penetrated into the bottom plate. At the same time, the slewing arm (22) that is pressed downward by the broken basic top (41) drives the rotating shaft (3) to rotate synchronously, and then drives the multiple secondary drums (7) to rotate synchronously through multiple gear transmission components. The multiple hydraulic supports (38) are pulled to the side away from the coal body (43) by an equal distance through multiple pairs of cables (19), and the multiple forward-leaning hydraulic supports (38) are corrected synchronously, and the top beams of the multiple hydraulic supports (38) are made close to the direct top (42), thereby playing a role in stabilizing the support of the direct top (42).

10. The method of correcting the forward tilt of a hydraulic support on an inclined working surface by using basic top rotation according to claim 9, characterized in that: In step 2, when the slewing arm (22) touches the alarm trigger (28) on the limit block (27), the alarm trigger (28) directly sounds an alarm to alert workers in the nearby area. After receiving the alarm, the workers promptly check and correct the posture of the hydraulic support (38), first remove the two prongs (26) from the bottom plate, and then move the hydraulic support (38) and correct its posture.

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