A direction adjusting and recycling device for a coal mine hydraulic support

Abstract

The utility model relates to a hydraulic support recovery technical field especially relates to a kind of direction adjusting recovery device for coal mine hydraulic support, including two symmetrical support base, two groups of lifting mechanisms are symmetrically installed on each support base, and multiple groups of lifting mechanisms are used to drive the top beam mechanism lifting of its top capable of hoisting hydraulic support;Gear can drive rotating support plate to rotate 90 degrees to the inside of two support base and be perpendicular to support base.It has beneficial effect, hoist hydraulic support by lifting mechanism driving top beam mechanism, avoid the damage such as wear and tear, structural damage caused by part ground dragging;Rotary support mechanism can make rotating support plate rotate 90 degrees and connect into platform, it is convenient to support and transport hydraulic support in the coal mine underground with many sundries, reduce moving resistance, improve direction adjusting flexibility and recovery efficiency, and structure symmetrical stable, compact adaptation underground environment, reduce manual operation, improve security.

Description

Technical Field

[0001] This utility model relates to the field of hydraulic support recycling technology, and in particular to a reversing and recycling device for hydraulic supports in coal mines. Background Technology

[0002] Hydraulic supports are hydraulic power units that use liquid pressure to generate supporting force and achieve automatic movement for roof support and management. They are indispensable supporting equipment in fully mechanized coal mining. Hydraulic supports consist of hydraulic cylinders (columns, jacks), load-bearing structural components (roof beams, shield beams, and bases, etc.), a primary pushing device, a control system, and other auxiliary devices. The heavy weight of hydraulic supports makes disassembly at the longwall mining face difficult.

[0003] In existing technologies, there are two methods for transporting hydraulic supports during their lowering and raising from the mine shaft: integral transportation and disassembly transportation. The recovery method for hydraulic supports is limited by transportation equipment and dimensions; therefore, most methods involve on-site disassembly. After disassembly, the length of the hydraulic support is reduced, and the remaining base section can be rotated 90 degrees for recovery. Specifically, the existing recovery process uses a hydraulic single-prop, a hand-operated hoist, and a return-prop winch to disassemble the hydraulic support top beam in the recovery triangle area, separating the top beam from the base section. The disassembled top beam is then placed directly on the ground at a height and towed to the loading chamber using the return-prop winch. The remaining base section is then towed 90 degrees using the return-prop winch and a dry-land tower to the loading chamber. However, this recovery method has the following problems: 1. Dragging the hydraulic support parts on the ground can damage them; 2. Movement is difficult in coal mines filled with debris.

[0004] Therefore, there is an urgent need for a repositioning and recovery device for hydraulic supports in coal mines that can be easily moved underground without damaging the hydraulic supports. Utility Model Content

[0005] (a) Technical problems to be solved

[0006] In view of the above-mentioned shortcomings and deficiencies of the prior art, the present invention provides a reversing and recovery device for hydraulic supports in coal mines, which solves the technical problems of difficulty in moving the hydraulic supports underground and damage caused by dragging the hydraulic supports' parts in the existing recovery methods.

[0007] (II) Technical Solution

[0008] To achieve the above objectives, the main technical solutions adopted by this utility model include:

[0009] This utility model provides a reversing and recovery device for hydraulic supports in coal mines, comprising two symmetrically arranged support bases, each support base having two sets of lifting mechanisms symmetrically installed. These lifting mechanisms drive the lifting of a top beam mechanism capable of hoisting the hydraulic support at its top. Two first-push cylinders are symmetrically arranged within the support bases, each first-push cylinder having a rack fixedly connected to its piston rod. The rack meshes with a gear installed on the support base, and the top of the gear is connected to a rotating support mechanism via a rotating shaft. The rotating support mechanism includes a rotating support plate embedded in the support base, the upper surface of which is on the same plane as the upper surface of the support base. The gear can drive the rotating support plate to rotate 90 degrees inwards towards the two support bases and perpendicular to them. The two rotating support plates on the same side of the two support bases can be connected to form a platform for supporting and transporting the hydraulic support.

[0010] Optionally, the support base is provided with movable wheels, one of the support bases is provided with multiple wedges on the outer side, and the other support base is provided with a second push cylinder. The piston rod of the second push cylinder is fixed with a hook, which can be connected to the hydraulic support for the second push cylinder to push the hydraulic support.

[0011] Optionally, multiple rollers are embedded in the top of the rotating support plate, with the rollers' rolling axis perpendicular to the length direction of the rotating support plate, and the rollers are evenly spaced along the length direction of the rotating support plate.

[0012] Optionally, the top of the rotating shaft is connected to the bottom of one end of the rotating support plate, and one of the rotating support plates on the same support base is provided with a plug-in block at the other end, and the other rotating support plate is provided with a plug-in groove that mates with the plug-in block at the other end; the two rotating support plates on the same side of the two support bases can be connected to form a platform for supporting and conveying hydraulic supports, which is also achieved by the cooperation of the plug-in block and the plug-in groove.

[0013] Optionally, the bottom of the rotating support plate is provided with a placement groove, and a support moving mechanism is provided inside the placement groove. The support moving mechanism includes a rotary motor rotatably connected to the placement groove, a drive rod fixedly connected to the output shaft of the rotary motor, a connecting plate movably connected to the drive rod, a support wheel mounted on the connecting plate, and a spring between the connecting plate and the drive rod. A tilting cylinder is also movably connected inside the placement groove. The piston rod end of the tilting cylinder is connected to the drive rod. The extension and retraction of the tilting cylinder drives the support moving mechanism to expand and contract relative to the placement groove.

[0014] Optionally, the lifting mechanism includes a bracket fixedly connected to the end of the support base and a lifting cylinder located on the bracket, the lifting cylinder being fixedly connected to the corner of the top beam mechanism.

[0015] Optionally, the top beam mechanism includes a first slide rail assembly, a rotating assembly, and a second slide rail assembly connected to the bottom of the first slide rail assembly via the rotating assembly; the first slide rail assembly includes: two parallel first rails and a movable plate disposed on the first rails and capable of reciprocating, the movement of which is driven by two third push cylinders; the rotating assembly includes a rotating disk rotatably connected to the movable plate, which drives the second slide rail assembly to rotate; the second slide rail assembly includes an I-shaped rotating plate and two second rails located at the bottom of two parallel sub-plates of the rotating plate, two clamping blocks slidably disposed on the second rails, and a bidirectional cylinder disposed on the second rails between the two clamping blocks, the two piston rods of the bidirectional cylinder being respectively connected to the two clamping blocks.

[0016] Optionally, the bottom of the rotating disk is fixedly connected to the rotating plate via a drive shaft, a fixed disk is sleeved on the bottom of the drive shaft, the top of the fixed disk is fixedly connected to the rotating plate, the rotating plate has multiple connection positions arranged around the drive shaft, and the outer circumferential surface of the drive shaft is fixedly connected to the connection positions via multiple L-shaped connectors.

[0017] Optionally, a hook is provided at the bottom of the rotating plate.

[0018] Optionally, the two ends of the two first tracks are fixedly connected to two crossbeams respectively, and multiple support guide rods are arranged in parallel between the two crossbeams, with the movable plate slidably connected to the support guide rods.

[0019] (III) Beneficial Effects

[0020] The beneficial effects of this utility model are as follows: This utility model provides a reversing and recovery device for hydraulic supports in coal mines, comprising two symmetrically arranged support bases. Each support base is symmetrically equipped with two sets of lifting mechanisms. These lifting mechanisms drive the top beam mechanism capable of hoisting the hydraulic support to rise and fall. Two first-push cylinders are symmetrically arranged inside the support bases. A rack is fixedly connected to the piston rod of each first-push cylinder. The rack meshes with a gear installed on the support base. The top of the gear is connected to a rotating support mechanism via a rotating shaft. The rotating support mechanism includes a rotating support plate embedded in the support base. The upper surface of the rotating support plate is on the same plane as the upper surface of the support base. The gear can drive the rotating support plate to rotate 90 degrees inward towards the two support bases and perpendicular to them. The two rotating support plates on the same side of the two support bases can be connected to form a platform for supporting and transporting the hydraulic support. Compared to existing technologies, the hydraulic support is hoisted by driving the top beam mechanism through a lifting mechanism, avoiding wear and structural damage caused by dragging parts on the ground; the rotating support mechanism can rotate the rotating support plate 90 degrees and connect it into a platform, which facilitates stable support and transportation of hydraulic supports in coal mines with many debris, reduces movement resistance, improves the flexibility of adjustment and recovery efficiency, and the structure is symmetrical, stable and compact, which is suitable for the underground environment, reduces manual operation and improves safety. Attached Figure Description

[0021] Figure 1 This is a three-dimensional structural diagram of the orienting and recovery device for a hydraulic support in a coal mine, according to Embodiment 1 of this utility model.

[0022] Figure 2 This is a schematic diagram of the support base used in the reversing and recovery device of a hydraulic support in a coal mine.

[0023] Figure 3 This is a schematic diagram of the gear and rack meshing structure in a reversing and recovery device used in a coal mine hydraulic support.

[0024] Figure 4 This is a schematic diagram of the assembly of the rotating support plate in the reversing and recovery device used in coal mine hydraulic supports.

[0025] Figure 5 This is a schematic diagram of the bottom structure of the rotating support plate in the reversing and recovery device used in coal mine hydraulic supports.

[0026] Figure 6 This is a schematic diagram of the rotating movement mechanism in a repositioning and recovery device for hydraulic supports in coal mines.

[0027] Figure 7 This is a three-dimensional structural diagram of the orienting and recovery device for a hydraulic support in a coal mine, according to Embodiment 2 of this utility model, wherein the rotating support plate is in a spliced ​​state;

[0028] Figure 8 A front view of a repositioning and recovery device used in coal mine hydraulic supports;

[0029] Figure 9 A side view of a repositioning and recovery device used in hydraulic supports for coal mines;

[0030] Figure 10 This is a top view of the tilting and recovery device used for hydraulic supports in coal mines, viewed horizontally downwards along the lifting mechanism.

[0031] [Explanation of Labels in the Attached Image]

[0032] 1. Support base; 11. First push cylinder; 12. Rack; 13. Gear; 14. Rotating shaft; 15. Moving wheel; 16. Wedge; 17. Second push cylinder; 18. Hook;

[0033] 2. Lifting mechanism; 21. Support frame; 22. Lifting cylinder;

[0034] 3. Top beam mechanism; 31. First track assembly; 311. First track; 312. Moving plate; 313. Third push cylinder; 314. Support guide rod; 32. Rotating assembly; 321. Rotary disk; 322. Drive shaft; 323. Fixed disk; 324. Connector; 33. Second slide rail assembly; 331. Rotating plate; 332. Second track; 333. Clamp block; 334. Double-acting cylinder; 34. Hook; 35. Crossbeam;

[0035] 4. Rotary support mechanism; 41. Rotary support plate; 42. Roller; 43. Insertion block; 44. Insertion slot; 45. Placement slot; 46. Support moving mechanism; 461. Rotary motor; 462. Drive rod; 463. Connecting plate; 464. Support wheel; 465. Spring; 466. Tilting cylinder. Detailed Implementation

[0036] To better explain and facilitate understanding of this utility model, the present utility model will be described in detail below with reference to the accompanying drawings and specific embodiments.

[0037] Example 1:

[0038] Reference Figures 1 to 6 This utility model proposes a reversing and recovery device for hydraulic supports in coal mines. It is used to recover parts of disassembled hydraulic supports in underground coal mines. For large and heavy components such as top beams and bases, direct transport to the trolley is inconvenient; the device needs to be reversing its direction before being placed on the trolley for transport. Specifically, in this embodiment, the reversing and recovery device for hydraulic supports in coal mines includes a support base 1, a rotating support mechanism 4, a lifting mechanism 2, and a top beam mechanism 3, as detailed below.

[0039] In this embodiment, the reversing and recovery device includes two symmetrically arranged support bases 1. Each support base 1 is symmetrically equipped with two sets of lifting mechanisms 2. The multiple sets of lifting mechanisms 2 are used to drive the top beam mechanism 3, which can suspend the hydraulic support, to rise and fall. Two first push cylinders 11 are symmetrically arranged inside the support base 1. A rack 12 is fixedly connected to the piston rod of each first push cylinder 11. The rack 12 meshes with a gear 13 installed on the support base 1. The top of the gear 13 is connected to the rotating support mechanism 4 through a rotating shaft 14. The rotating support mechanism 4 includes a rotating support plate 41 embedded in the support base 1. The upper surface of the rotating support plate 41 is on the same plane as the upper surface of the support base 1. The gear 13 can drive the rotating support plate 41 to rotate 90 degrees inward to the two support bases 1 and be perpendicular to the support base 1. The two rotating support plates 41 on the same side of the two support bases 1 can be connected to form a platform for supporting and conveying the hydraulic support.

[0040] Specifically, the symmetrically arranged support base 1 is equivalent to the chassis of the reversing and recovery device, which is used to support the reversing and recovery device. Two sets of lifting mechanisms 2 are symmetrically installed on each support base 1. The lifting mechanism 2 lifts and lowers the top beam mechanism 3 to adapt to the height of different parts of the disassembled hydraulic support. The top beam mechanism 3 can clamp and turn the parts of the disassembled hydraulic support. Two first push cylinders 11 are symmetrically arranged near the end of the support base 1. The piston rod end of the first push cylinder 11 is fixedly connected to a rack 12 by welding, integral molding or snap-fit. The rack 12 meshes with a gear 13 to drive the gear 13 to rotate. The top of the gear 13 is a rotating shaft 14. The rotating shaft 14 is fixedly connected to the end of the rotating support plate 41 near the end of the support base 1 by snap-fit, screw connection or welding. Two rotating support plates 41 are symmetrically arranged on each support base 1. The ends of the two rotating support plates 41 abut each other. The rotation of the gear 13 drives the rotating shaft 14 to rotate, thereby causing the rotating support plate 41 to rotate 90 degrees inward towards the two support bases 1, perpendicular to the support base 1. After the rotating support plates 41 on the same side of the two support bases 1 rotate 90 degrees, they can be spliced ​​to form a platform for supporting and transporting hydraulic supports.

[0041] In summary, compared with existing technologies, the hydraulic support is hoisted by driving the top beam mechanism 3 through the lifting mechanism 2, avoiding wear and structural damage caused by dragging parts on the ground; the rotating support mechanism 4 can rotate the rotating support plate 41 90 degrees and connect it into a platform, which facilitates the stable support and transportation of hydraulic supports in coal mines with many debris, reduces movement resistance, improves the flexibility of adjustment and recovery efficiency, and the structure is symmetrical, stable and compact, which is suitable for the underground environment, reduces manual operation and improves safety.

[0042] Furthermore, the support base 1 is equipped with movable wheels 15, and one of the support base 1 has multiple wedges 16 on its outer side. The other support base 1 is equipped with a second push cylinder 17, and a hook 18 is fixed to the piston rod of the second push cylinder 17. The hook 18 can be connected to the hydraulic support for the second push cylinder 17 to push the hydraulic support. The movable wheels 15 on the support base 1 enable the repositioning and recovery device to move. The wedges 16 are located on the outer side of the support base 1 to facilitate the transport of disassembled parts of the hydraulic support to the transport mechanism. The hook 18 is fixedly connected to the piston rod of the second push cylinder 17 by means of integral molding, welding, or screwing. The hook 18 is used to directly push the displacement of the parts of the hydraulic support.

[0043] Furthermore, multiple rollers 42 are embedded in the top of the rotating support plate 41. The rolling axis of the rollers 42 is perpendicular to the length direction of the rotating support plate 41, and the rollers 42 are evenly spaced along the length direction of the rotating support plate 41. The rolling axis of the rollers 42 is perpendicular to the rotating support plate 41, which facilitates the transportation of hydraulic support parts, reduces the frictional force pushing the hydraulic support parts, and allows them to move along the length direction of the rotating support plate 41.

[0044] Furthermore, the top end of the rotating shaft 14 is connected to the bottom of one end of the rotating support plate 41. One of the rotating support plates 41 located on the same support base 1 has a plug-in block 43 at its other end, and the other rotating support plate 41 has a plug-in groove 44 that mates with the plug-in block 43 at its other end. The two rotating support plates 41 located on the same side of the two support bases 1 can be connected to form a platform for supporting and conveying hydraulic supports, which is also achieved through the cooperation of the plug-in block 43 and the plug-in groove 44.

[0045] Specifically, the rotating support plate 41 is fixedly connected to the rotating shaft 14 by means of snap-fit, screw-fit, or welding. The rotation of the rotating shaft 14 can drive the rotation of the rotating support plate 41. The rotating support mechanism 4 includes four rotating support plates 41 embedded in two support bases 1. One end of one rotating support plate 41 is provided with a plug-in block 43. The other rotating support plate 41 on the same support base 1 is provided with a plug-in groove 44 that cooperates with the plug-in block 43 at the end corresponding to the plug-in block 43. The two rotating support plates 41 on the same support base 1 can be snapped together. When the four rotating support plates 41 on the two support bases 1 rotate 90 degrees inward towards the two support bases 1, they can be snapped together to form a platform for supporting and conveying hydraulic supports. When the two rotating support plates on the same side are snapped together, it is achieved by the cooperation of the plug-in block 43 and the plug-in groove 44. The strength between the two rotating support plates 41 is increased to enhance their supporting force. The rotation range of the rotating support plate 41 is from the length direction of the support base 1 to 90 degrees from the perpendicular line to the inner side of the two support bases 1.

[0046] Furthermore, a placement groove 45 is provided at the bottom of the rotating support plate 41. A support moving mechanism 46 is provided inside the placement groove 45. The support moving mechanism 46 includes a rotary motor 461 rotatably connected to the placement groove 45. A drive rod 462 is fixedly connected to the output shaft of the rotary motor 461. A connecting plate 463 is movably connected to the drive rod 462. A support wheel 464 is installed on the connecting plate 463. A spring 465 is provided between the connecting plate 463 and the drive rod 462. A tilting cylinder 466 is also movably connected inside the placement groove 45. The piston rod end of the tilting cylinder 466 is connected to the drive rod 462. The extension and retraction of the tilting cylinder 466 drives the support moving mechanism 46 to expand and contract relative to the placement groove 45.

[0047] Specifically, when the rotating support plate 41 rotates 90 degrees, the tilting cylinder 466 pushes the drive rod 462 to tilt, the support wheel 464 extends, and the rotating motor 461 rotates, thereby driving the support wheel 464 to rotate. Since the support wheel 464 is in contact with the ground during rotation, it can be retracted during rotation by the spring 465 to protect the support wheel 464. The support moving mechanism 46 is used to support the hydraulic support parts on the rotating support plate 41 on the one hand, and to facilitate the movement of the rotating support plate 41 on the other hand.

[0048] Furthermore, the lifting mechanism 2 includes a bracket 21 fixedly connected to the end of the support base 1 and a lifting cylinder 22 located on the bracket 21. The lifting cylinder 22 is fixedly connected to the corner of the top beam mechanism 3. The bracket 21 is fixedly connected to the end of the support base 1 by welding, screwing, or snapping. There are a total of four brackets 21 at the ends of the two support bases 1. Each bracket 21 has a lifting cylinder 22 at its top for driving the top beam mechanism 3 to lift. The top beam mechanism 3 is quadrilateral, and the lifting cylinder 22 is connected to the four corners of the top beam mechanism 3.

[0049] Example 2:

[0050] Reference Figures 7 to 10 The difference between this embodiment and embodiment 1 is that the top beam mechanism 3 in this embodiment can hoist the hydraulic support and adjust its direction, as detailed below.

[0051] In this embodiment, the top beam mechanism 3 includes a first slide rail assembly 31, a rotating assembly 32, and a second slide rail assembly 33 connected to the bottom of the first slide rail assembly 31 via the rotating assembly 32. The first slide rail assembly 31 includes two parallel first rails 311 and a movable plate 312 disposed on the first rails 311 and capable of reciprocating, the movement of which is driven by two third push cylinders 313. The rotating assembly 32 includes a rotating disk 321 rotatably connected to the movable plate 312, which drives the second slide rail assembly 33 to rotate. The second slide rail assembly 33 includes an I-shaped rotating plate 331 and two second rails 332 located at the bottom of two parallel sub-plates of the rotating plate 331. Two clamping blocks 333 are slidably disposed on the second rails 332, and a bidirectional cylinder 334 is disposed on the second rails 332 between the two clamping blocks 333. The two piston rods of the bidirectional cylinder 334 are respectively connected to the two clamping blocks 333.

[0052] Specifically, the movable plate 312 is driven to reciprocate by the third push cylinder 313. The piston rod of the third push cylinder 313 is fixedly connected to the movable plate 312 by welding, snap-fitting, or screwing. Thus, the third push cylinder 313 is set at both ends of the top beam mechanism 3. A rotating disk 321 is rotatably connected to the movable plate 312. The rotating disk 321 is driven to rotate by a swing cylinder, or it can be driven by 13 gears (not shown in the figure). The bottom of the two parallel sub-plates of the I-shaped rotating plate 331 is symmetrically provided with two rotatable clamping blocks 333. A two-way cylinder 334 is provided between the two clamping blocks 333. Through the two-way cylinder 334 between the two clamping blocks 333, the two clamping blocks 333 can move towards each other or relative to each other to clamp the hydraulic support.

[0053] Furthermore, the bottom of the rotating disk 321 is fixedly connected to the rotating plate 331 via a drive shaft 322. A fixed disk 323 is fitted onto the bottom of the drive shaft 322, and the top of the fixed disk 323 is fixedly connected to the rotating plate 331. The rotating plate 331 has multiple connection positions arranged around the drive shaft 322, and the outer circumferential surface of the drive shaft 322 is fixedly connected to the connection positions via multiple L-shaped connectors 324. The bottom of the rotating disk 321 is fixedly connected to the drive shaft 322 by snap-fit, screw-fit, or welding, and the drive shaft 322 passes through the middle of the rotating plate 331 and is fixed to it by snap-fit, welding, or screw-fit. The fixed plate 323 clamps the rotating plate 331 to the bottom of the drive shaft 322, while the top of the fixed plate 323 is fixedly connected to the rotating plate 331 by welding, screwing, or riveting. The two ends of multiple connecting parts 324 are fixedly connected to the outer circumference of the drive shaft 322 and the top of the rotating plate 331 by welding, screwing, or clamping. The connecting parts 324 are used to strengthen the connection between the rotating plate 331 and the drive shaft 322 during the rotation of the moving plate 312, preventing the rotating plate 331 from falling off. Moreover, among the parts of the hydraulic support, the top beam and the base are relatively heavy and generate a large force during rotation. When the rotating plate 331 stops, it is subject to a large inertia and is prone to falling off at the connection between the rotating plate 331 and the drive shaft 322, causing an accident. Therefore, the connecting parts 324 further improve the connection strength, making it less likely to fall off and avoiding safety accidents.

[0054] Furthermore, a hook 34 is provided at the bottom of the rotating plate 331. The movable plate 312 is quadrilateral, and thus, four hooks 34 are provided at the four corners of the movable plate 312. When it is impossible to clamp the parts of the hydraulic support (such as the base) by the clamp block 333, it is necessary to first lift it to a certain height by the hooks 34, and then clamp it by the clamp block 333. Moreover, the way the hooks 34 and the clamp block 333 cooperate with each other can also reduce the swaying of the hooks 34 during the rotation process, which can cause certain hazards.

[0055] Furthermore, the two ends of the two first rails 311 are fixedly connected to two crossbeams 35 respectively. Multiple supporting guide rods 314 are arranged parallel to each other between the two crossbeams 35, and the moving plate 312 is slidably connected to the supporting guide rods 314. The two ends of the two first rails are connected by the two crossbeams 35, and two supporting guide rods 314 are arranged between the two crossbeams 35. The supporting guide rods 314 are slidably connected to the moving plate 312, thereby guiding the movement of the moving plate 312 and also supporting the moving plate 312, thus improving the strength of the top beam mechanism 3.

[0056] The working principle of the reversing and recovery device is as follows: Hydraulic supports are arranged in rows in the coal mine. The support base 1, lifting mechanism 2 and top beam mechanism 3 are set up so that the reversing and recovery device can be moved to both sides of a single hydraulic support and disassembled one by one.

[0057] Step 1: Retract the hydraulic support, adjust the height of the top beam mechanism 3, move it to both sides of the hydraulic support, drive the clamp block 333 to descend, move it to both sides of the top beam of the hydraulic support, and then start the bidirectional cylinder 334, which will drive the clamp block 333 and the top beam of the hydraulic support to rotate 90 degrees.

[0058] Step 2: The second push cylinder 17 pushes the rotating support plate 41 to rotate 90 degrees, the four rotating support plates 41 are interlocked in pairs, and the support moving mechanism 46 is activated to extend and contact the ground for support; then the top beam of the hydraulic support is placed on the rotating support plate 41, and the top beam of the hydraulic support is pushed out by the first push cylinder 11 and the hook 18.

[0059] Step 3: The repositioning and recovery device moves to both sides of the hydraulic support base again. Due to the heavy weight of the base, it cannot be clamped by clamping block 333 alone. Therefore, it is first lifted by hook 34, and then the rotating support plate 41 is rotated 90 degrees to place the hydraulic support base on the rotating support plate 41. It is then clamped by clamping block 333. At this time, it moves outward by supporting moving mechanism 46 and moving wheel 15. After reaching the designated position, rotating disk 321 rotates 90 degrees, driving the hydraulic support base to rotate 90 degrees. Then, the second push cylinder 17 is used to push it out.

[0060] When the hydraulic support needs to be installed, simply reverse the disassembly sequence of the hydraulic support. Pull the hydraulic support parts onto the rotating support plate 41, then rotate it. After the coal mine hydraulic support retraction device moves to the designated position, the hydraulic support parts are released, and the installation of the hydraulic support can then be completed.

[0061] In the description of this utility model, it should be understood that the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Therefore, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this utility model, "a plurality of" means two or more, unless otherwise explicitly specified.

[0062] In this utility model, unless otherwise explicitly specified and limited, the terms "installation," "connection," "joining," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. For those skilled in the art, the specific meaning of the above terms in this utility model can be understood according to the specific circumstances.

[0063] In this utility model, unless otherwise explicitly specified and limited, "above" or "below" the second feature can mean that the first feature is in direct contact with the second feature, or that the first feature is in indirect contact with the second feature through an intermediate medium. Furthermore, "above," "on top of," and "over" the second feature can mean that the first feature is directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "beneath" the second feature can mean that the first feature is directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.

[0064] In the description of this specification, the terms "one embodiment," "some embodiments," "embodiment," "example," "specific example," or "some examples," etc., refer to specific features, structures, materials, or characteristics described in connection with that embodiment or example, which are included in at least one embodiment or example of the present invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples. Moreover, without contradiction, those skilled in the art can combine and integrate the different embodiments or examples described in this specification, as well as the features of different embodiments or examples.

[0065] Although embodiments of the present invention have been shown and described above, it is understood that the above embodiments are exemplary and should not be construed as limiting the present invention. Those skilled in the art can make modifications, alterations, substitutions and variations to the above embodiments within the scope of the present invention.

Claims

1. A reversing and recovery device for hydraulic supports in coal mines, characterized in that: It includes two symmetrically arranged support bases (1), and each support base (1) is symmetrically equipped with two sets of lifting mechanisms (2). The multiple sets of lifting mechanisms (2) are used to drive the top beam mechanism (3) that can suspend the hydraulic support at its top to lift up and down. Two first push cylinders (11) are symmetrically arranged inside the support base (1). A rack (12) is fixedly connected to the piston rod of each first push cylinder (11). The rack (12) meshes with a gear (13) installed on the support base (1). The top of the gear (13) is connected to the rotating support mechanism (4) through a rotating shaft (14). The rotating support mechanism (4) includes a rotating support plate (41) embedded in the support base (1). The upper surface of the rotating support plate (41) is on the same plane as the upper surface of the support base (1). The gear (13) can drive the rotating support plate (41) to rotate 90 degrees inward to the two support bases (1) and be perpendicular to the support bases (1). The two rotating support plates (41) on the same side of the two support bases (1) can be connected to form a platform for supporting and conveying hydraulic supports.

2. The reversing and recovery device for hydraulic supports in coal mines as described in claim 1, characterized in that: The support base (1) is provided with a movable wheel (15), and one of the support bases (1) is provided with a plurality of wedges (16) on the outer side. The other support base (1) is provided with a second push cylinder (17). A hook (18) is fixed on the piston rod of the second push cylinder (17). The hook (18) can be connected to the hydraulic support for the second push cylinder (17) to push the hydraulic support.

3. The reversing and recovery device for hydraulic supports in coal mines as described in claim 1, characterized in that: The top of the rotating support plate (41) is embedded with a plurality of rollers (42), the rolling axis of the rollers (42) is perpendicular to the length direction of the rotating support plate (41), and the rollers (42) are evenly spaced along the length direction of the rotating support plate (41).

4. The reversing and recovery device for hydraulic supports in coal mines as described in claim 1, characterized in that: The top end of the rotating shaft (14) is connected to the bottom of one end of the rotating support plate (41). One of the rotating support plates (41) located on the same support base (1) is provided with a plug-in block (43) at the other end, and the other rotating support plate (41) is provided with a plug-in groove (44) that cooperates with the plug-in block (43) at the other end. The two rotating support plates (41) located on the same side of the two support bases (1) can be connected to form a platform for supporting and conveying hydraulic supports, which is also achieved by the cooperation of the plug block (43) and the plug slot (44).

5. The reversing and recovery device for hydraulic supports in coal mines as described in claim 1, characterized in that: The bottom of the rotating support plate (41) is provided with a placement groove (45), and a support moving mechanism (46) is provided inside the placement groove (45). The support moving mechanism (46) includes a rotary motor (461) rotatably connected to the placement groove (45). A drive rod (462) is fixedly connected to the output shaft of the rotary motor (461). A connecting plate (463) is movably connected to the drive rod (462). A support wheel (464) is installed on the connecting plate (463). A spring (465) is provided between the connecting plate (463) and the drive rod (462). The placement slot (45) is also movably connected to a tilting cylinder (466). The piston rod end of the tilting cylinder (466) is connected to the drive rod (462). The tilting cylinder (466) extends and retracts, thereby driving the support moving mechanism (46) to expand and contract relative to the placement slot (45).

6. The reversing and recovery device for hydraulic supports in coal mines as described in claim 1, characterized in that: The lifting mechanism (2) includes a bracket (21) fixedly connected to the end of the support base (1) and a lifting cylinder (22) located on the bracket (21). The lifting cylinder (22) is fixedly connected to the corner of the top beam mechanism (3).

7. The reversing and recovery device for hydraulic supports in coal mines as described in claim 1, characterized in that: The top beam mechanism (3) includes a first slide rail assembly (31), a rotating assembly (32), and a second slide rail assembly (33) connected to the bottom of the first slide rail assembly (31) via the rotating assembly (32). The first slide rail assembly (31) includes: two parallel first rails (311) and a movable plate (312) disposed on the first rails (311) and capable of reciprocating, the movement of which is driven by two third push cylinders (313); The rotating assembly (32) includes a rotating disk (321) rotatably connected to the moving plate (312), which drives the second slide rail assembly (33) to rotate. The second slide rail assembly (33) includes an I-shaped rotating plate (331) and two second tracks (332) located at the bottom of two parallel sub-plates of the rotating plate (331). Two clamping blocks (333) are slidably arranged on the second tracks (332). A bidirectional cylinder (334) is arranged on the second tracks (332) between the two clamping blocks (333). The two piston rods of the bidirectional cylinder (334) are respectively connected to the two clamping blocks (333).

8. The reversing and recovery device for hydraulic supports in coal mines as described in claim 7, characterized in that: The bottom of the rotating disk (321) is fixedly connected to the rotating plate (331) via a drive shaft (322). A fixed disk (323) is sleeved on the bottom of the drive shaft (322). The top of the fixed disk (323) is fixedly connected to the rotating plate (331). The rotating plate (331) has multiple connection positions arranged around the drive shaft (322). The outer circumferential surface of the drive shaft (322) is fixedly connected to the connection positions via multiple L-shaped connectors (324).

9. The reversing and recovery device for hydraulic supports in coal mines as described in claim 7, characterized in that: The bottom of the rotating plate (331) is provided with a hook (34).

10. The reversing and recovery device for hydraulic supports in coal mines as described in claim 7, characterized in that: The two ends of the first two tracks (311) are fixedly connected to two crossbeams (35) respectively. Multiple support guide rods (314) are arranged in parallel between the two crossbeams (35). The moving plate (312) is slidably connected to the support guide rods (314).

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