A hydraulic support withdrawal device and method

Abstract

The present application belongs to the technical field of coal mine equipment, and particularly relates to a device and method for withdrawing a support to be loaded on a car, which aims to solve the technical problem of low efficiency of withdrawing the support to be loaded on the car by using a winch to push and a jack to lift, and adopts the technical scheme of a hydraulic support withdrawing device for withdrawing the support to be loaded on a car at a working face, which comprises a base, a sliding part slidingly arranged on the base, and a rotating mechanism arranged on the sliding part. The rotating mechanism comprises a support supporting plate for placing and rotating the support to be loaded on the car, and the support supporting plate rotates in the horizontal direction through a driving assembly arranged on the sliding part. A pushing mechanism is further arranged on the base, and the pushing mechanism pushes the sliding part and the rotating mechanism to move on the base. The present application is used for horizontally overturning the support to be loaded on the car by 90 degrees, avoiding the supports to be loaded on the car on both sides, improving safety, and reducing labor intensity.

Description

Technical Field

[0001] This invention belongs to the field of coal mine equipment technology, specifically relating to a hydraulic support removal device and method. Background Technology

[0002] Hydraulic supports are structures used to support coal mining faces. These supports are numerous and account for over 80% of the total weight of the equipment at the working face. During the relocation of a fully mechanized coal mining face, hydraulic supports need to be removed from the original face and transported to the new face for installation. Currently, hydraulic support removal is achieved by using winches to push the supports and manual labor with jacks. This method is labor-intensive, poses numerous safety hazards, and has low installation efficiency, making it a bottleneck in the relocation process of fully mechanized mining faces. Summary of the Invention

[0003] The technical problem to be solved by the present invention is to provide a vehicle loading bracket removal device with low labor intensity, high work efficiency and good safety performance.

[0004] To solve the above-mentioned technical problems, the technical solution adopted by the present invention is as follows: a hydraulic support removal device for removing a support to be loaded onto a working surface, comprising: a base, a sliding part slidably disposed on the base, and a rotating mechanism disposed on the sliding part; the rotating mechanism includes a support plate for placing the support to be loaded onto and driving it to rotate, the support plate rotating horizontally by a driving component disposed on the sliding part; the base is also provided with a pushing mechanism, the pushing mechanism pushing the sliding part together with the rotating mechanism to move on the base.

[0005] Furthermore, a slewing bearing is provided at the lower end of the support plate, and the lower end of the slewing bearing is fixedly connected to the sliding part.

[0006] Furthermore, a connecting seat is fixed on the side of the base opposite to the bracket plate, and the connecting seat has a connecting hole for connecting the tension chain ring.

[0007] Furthermore, the pushing mechanism is located on one side opposite to the support plate, wherein the pushing mechanism includes two pushing cylinders, which are arranged in parallel on both sides of the connecting seat, and the cylinder end of the pushing cylinder is hinged to one end of the base through a hinge seat.

[0008] Furthermore, the drive assembly includes a first hydraulic cylinder and a connecting lug plate. The cylinder barrel of the first hydraulic cylinder is hinged to the sliding part, and the piston rod of the first hydraulic cylinder faces the bracket plate. One end of the connecting lug plate is fixedly connected to the bracket plate, and the other end of the connecting lug plate is hinged to the piston rod of the first hydraulic cylinder.

[0009] Furthermore, the base includes a base plate and a base plate extending upward around the base plate. The sliding part is U-shaped, and there are protrusions on both sides of the sliding part. The outer side of the protrusion abuts against the inner side of the base plate to form a guide structure, and the first oil cylinder is hinged and fixed inside the protrusion.

[0010] The present invention also provides a method for removing a hydraulic support, including the aforementioned hydraulic support removal device, the removal method comprising the following steps:

[0011] The vehicle-to-be-loaded bracket moves onto the bracket support plate of the vehicle-to-be-loaded bracket removal device via its own moving mechanism. During the process, the vehicle-to-be-loaded bracket is secured by a tension chain hook to prevent it from sliding down.

[0012] Remove the tension chain link from the support frame to be loaded onto the vehicle;

[0013] Open the valve of the first hydraulic cylinder, and the first hydraulic cylinder drives the bracket plate together with the bracket to be loaded to turn. At the same time, open the valve of the push cylinder, and the push cylinder pushes the sliding part together with the bracket to be loaded to move laterally to avoid obstacles.

[0014] Rotate the bracket plate 90° and drive the bracket to be loaded onto the vehicle to rotate 90°;

[0015] The vehicle-to-be-loaded bracket moves off the vehicle-to-be-loaded bracket removal device via its own moving mechanism.

[0016] Return each part of the hydraulic support removal device to its initial state, and transport away the removed support to be loaded onto the vehicle.

[0017] The hydraulic support removal device is pushed to the next removal working position by the end support pushing mechanism on the connecting end working surface;

[0018] Repeat the above steps to complete the removal of all hydraulic supports.

[0019] Compared with the prior art, the present invention has the following beneficial effects.

[0020] I. This invention, by setting up a pushing mechanism and a rotating mechanism, causes the loading support to rotate horizontally by 90 degrees. The pushing mechanism pushes the sliding part to move the loading support laterally during the rotation, avoiding the hydraulic supports on both sides. The rotation and forward movement of the loading support occur on the support plate, eliminating the need for pushing with steel cables and the driving force not acting directly on the loading support, greatly reducing resistance. This allows large hydraulic supports to be moved with relatively small equipment, significantly reducing costs. It also improves stability and safety during the removal process, eliminating the need for frequent manual adjustments with jacks, simplifying operation and reducing labor intensity.

[0021] Second, the entire process of removing the hydraulic support in this invention is completed by the operator using the hydraulic mechanism, which significantly improves efficiency compared to the traditional pushing and turning removal method.

[0022] Third, the dismantling device of the present invention has a flat structure, which not only does not occupy too much space in the limited space of the mine, but also allows the support to rotate and move at a low center of gravity. Furthermore, the support can be moved up and down the dismantling device using its own moving mechanism. The device improves both safety and efficiency during the process.

[0023] Fourth, the lifting device of the present invention uses emulsion as power. The emulsion power is provided by the emulsion pump station that is already set on the working surface, so there is no need to equip it with additional power equipment or power mechanism, which simplifies the equipment structure and reduces costs. Attached Figure Description

[0024] The present invention will now be further described with reference to the accompanying drawings.

[0025] Figure 1 This is a top view schematic diagram of the structure of Embodiment 1 of the present invention.

[0026] Figure 2 This is a side view schematic diagram of the structure of Embodiment 1 of the present invention.

[0027] Figure 3 This is an enlarged schematic diagram of point A in Embodiment 1 of the present invention.

[0028] Figure 4 This is a schematic diagram of the withdrawal process of the present invention. Figure 1 .

[0029] Figure 5 This is a schematic diagram of the withdrawal process of the present invention. Figure 2 .

[0030] Figure 6 This is a schematic diagram of the withdrawal process of the present invention. Figure 3 .

[0031] Figure 7 This is a schematic diagram of the withdrawal process of the present invention. Figure 4 .

[0032] In the diagram, 1 is the base, 12 is the sliding part, 121 is the protruding part, 13 is the base plate, 14 is the base upright plate; 2 is the bracket to be loaded onto the vehicle.

[0033] 31 is the connecting seat, 32 is the connecting hole, and 33 is the pushing cylinder;

[0034] 41 is the support plate, 42 is the first oil cylinder, 44 is the slewing bearing, 441 is the moving ring of the raceway bearing, 442 is the stationary ring of the raceway bearing, 444 is the rolling assembly, 45 is the connecting lug, 46 is the guide groove, and 5 is the cover plate. Detailed Implementation

[0035] Embodiments of the present invention are described in detail below, examples of which are illustrated in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and intended to explain the present invention, and should not be construed as limiting the present invention.

[0036] The vehicle mounting bracket removal device according to an embodiment of the present invention is described below with reference to the accompanying drawings.

[0037] Figure 1 This is a schematic diagram of a hydraulic support removal device provided in an embodiment of the present invention. The hydraulic support removal device is used to remove a support 2 awaiting loading from a working face. It includes: a base 1, a sliding part 12 slidably disposed on the base 1, and a rotating mechanism disposed on the sliding part 12. The rotating mechanism includes a support plate 41 for placing the support 2 awaiting loading and driving it to rotate. The support plate 41 is disposed on the front side of the base 1, i.e., near the goaf side of the working face, and rotates horizontally via a driving component disposed within the sliding part 12. A pushing mechanism is also disposed on the base 1, which pushes the sliding part 12 and the rotating mechanism to move within a slide rail 11.

[0038] In this embodiment, as Figure 1 As shown, the base 1 includes a rectangular base plate 13 and a base upright plate 14 extending upwards around the base plate 13. The support plate 41 is disc-shaped, with its center longitudinally aligned with the center of the sliding part, and its lateral distance from one end approximately half the width of the base. To prevent debris from entering and to protect the internal structure, a cover plate 5 is detachably fixed to the upper end of the base 1, with the support plate 41 higher than the cover plate 5.

[0039] It should be noted that the spacing between the loading supports on the goaf side is very small, and there is not enough space for the loading support 2 to rotate 90 degrees. Through the cooperation of the pushing mechanism, the rotating mechanism and the sliding part 12, the rotating mechanism drives the loading support to rotate horizontally by 90 degrees. At this time, the pushing mechanism pushes the rotating mechanism and the sliding part 12, causing the loading support 2 to move laterally in a timely manner during the rotation to avoid the loading supports on both sides. During the process, it is not necessary to push with steel wire ropes, nor is it necessary to frequently use jacks to adjust the direction manually.

[0040] like Figure 2 As shown, the lower end of the bracket plate 41 is fixedly connected to a slewing bearing 44 by bolts. The lower end of the slewing bearing 44 is fixedly connected to the sliding part 12. By using the slewing bearing 44 as the base for the rotation of the bracket plate 41, it can be ensured that after the bracket to be loaded is placed on the bracket plate 41, the bracket plate 41 can still rotate relatively smoothly.

[0041] In this embodiment, as Figure 3 As shown, the slewing bearing 44 includes a moving race bearing 441, a fixed race bearing 442, and a rolling assembly 444 disposed between the two. The upper end of the moving race bearing 441 is fixedly connected to the support plate 47 by bolts, and the lower end of the fixed race bearing 442 is fixedly connected to the sliding part 12 by bolts. The rolling assembly 444 includes structures such as balls, cylindrical rollers, and cages.

[0042] A connecting seat 31 is fixed on the side of the base 1 opposite to the support plate 41. The connecting seat 31 has a connecting hole 32 for connecting the tension chain ring. The height of the connecting hole is higher than the platform and above the cover plate 5. During the process of the vehicle-to-be-loaded bracket 2 moving to the support plate 41, the tension chain ring hooks onto the vehicle-to-be-loaded bracket 2 to help prevent the bracket from falling. The length of the tension chain ring is adjusted by the chain ring adjuster.

[0043] The pushing mechanism is located on the side of the base 1 opposite to the bracket plate 41, that is, on the same side of the connecting seat 31. The pushing mechanism includes two pushing cylinders 33, which are respectively arranged in parallel on both sides of the connecting seat 31. The piston rod end of the pushing cylinder 33 is hinged and fixed to one end of the base 1. The piston cylinder of the pushing cylinder 33 is hinged to the base 1 through the hinge seat.

[0044] It should be noted that the piston cylinders of both the auxiliary push cylinder 31 and the push cylinder 33 are hinged to the base 1. One end of the piston rod of the push cylinder 33 is hinged to the sliding part 12 through a hinge seat. The hinge shafts are both set horizontally. Therefore, the auxiliary push cylinder 31 and the push cylinder 33 can rotate to a certain extent in the vertical direction.

[0045] like Figure 1 and 2 As shown, the drive assembly includes a first hydraulic cylinder 42 and two connecting lugs 45. The cylinder barrel of the first hydraulic cylinder 42 is hinged to the base plate of the base 1 via a hinge seat. The piston rod of the first hydraulic cylinder 42 faces the bracket plate 41. The connecting lugs 45 are respectively disposed on both sides of the bracket plate 47. One end of the connecting lug 45 is fixedly connected to the lower end of the bracket plate 47, and the other end of the connecting lug 45 extends to the outside of the bracket plate 41. One of the connecting lugs 45 is hinged to the piston rod of the first hydraulic cylinder 42.

[0046] It should be noted that in this embodiment, the two ends of the first hydraulic cylinder 42 are hinged to the sliding part 12 and the connecting ear plate 45 in the horizontal direction, that is, the hinge axis is set vertically from bottom to top. In this way, when the first hydraulic cylinder 42 pushes the bracket plate 41 to rotate, the first hydraulic cylinder 42 can rotate in the horizontal direction with a certain amplitude around the hinge axis, thereby adapting to the angle change of the connecting ear plate 45 during the rotation of the bracket plate 41.

[0047] like Figure 1As shown, the sliding part 12 is U-shaped, and there are protrusions 121 on both sides of the sliding part 12. The outer side of the protrusion 121 fits against the inner side of the base plate 14 to form a guide structure. A first hydraulic cylinder 42 is hinged and fixed inside the protrusion 121. The protrusion 121 not only adapts to the shape of the pushing mechanism, thus saving installation space and reducing costs, but also extends the guide structure. The long guide structure improves the service life of the contact part between the outer side of the sliding part 12 and the inner side of the base plate 14.

[0048] A method for removing a hydraulic support according to an embodiment of the present invention includes a hydraulic support removal device as described in the above embodiment, such as... Figure 4-7 As shown, the withdrawal method includes the following steps:

[0049] The vehicle-to-be-loaded bracket 2 moves onto the bracket support plate 41 of the vehicle-to-be-loaded bracket removal device via its own moving mechanism. During the process, the vehicle-to-be-loaded bracket 2 is secured by a tension chain hook to prevent it from sliding down.

[0050] Remove the tension chain link from the bracket 2 to be loaded onto the vehicle;

[0051] Open the valve of the first hydraulic cylinder 42, and the first hydraulic cylinder 42 drives the bracket plate 41 and the bracket 2 to be loaded to turn. At the same time, open the valve of the push cylinder 33, and the push cylinder 33 pushes the sliding part 12 and the bracket 2 to be loaded to move laterally to avoid obstacles.

[0052] Rotate the bracket plate 41 by 90° and drive the bracket 2 to be loaded onto the vehicle to rotate by 90°;

[0053] Control the vehicle-to-be-loaded bracket 2 to move off the vehicle-to-be-loaded bracket removal device via its own moving mechanism;

[0054] Return all parts of the hydraulic support removal device to their initial state, and transport away the removed support 2 that is ready to be loaded onto the vehicle.

[0055] Push the hydraulic support removal device to the next removal position;

[0056] Repeat the above steps to complete the removal of all hydraulic supports.

[0057] It should be noted that the power source used in this invention is the emulsion pressure source of the longwall mining face, and no additional power system is required, which simplifies the equipment structure and reduces costs.

[0058] The above embodiments are merely illustrative of the principles and effects of the present invention and are not intended to limit the invention. Those skilled in the art can modify or improve the above embodiments without departing from the spirit and scope of the present invention. Therefore, all equivalent modifications or changes made by those skilled in the art without departing from the spirit and technical concept disclosed in the present invention should still be covered by the claims of the present invention.

Claims

1. A hydraulic support retraction device for retracting a support (2) to be loaded onto a work surface, characterized in that, include: A base (1) is provided with a sliding part (12) slidably disposed on the base (1). A rotary mechanism is provided on the sliding part (12). The rotary mechanism includes a bracket plate (41) for placing the bracket (2) to be loaded onto the vehicle and driving it to rotate. The bracket plate (41) rotates in the horizontal direction through a drive assembly disposed on the sliding part (12). A push mechanism is also provided on the base (1). The push mechanism pushes the sliding part (12) together with the rotary mechanism to move on the base (1). A connecting seat (31) is fixed on the side of the base (1) opposite to the bracket plate (41), and a connecting hole (32) for connecting the tension chain ring is provided on the connecting seat (31). The pushing mechanism is located on one side opposite to the support plate (41). The pushing mechanism includes two pushing cylinders (33). The two pushing cylinders (33) are arranged in parallel on both sides of the connecting seat (31). The cylinder end of the pushing cylinder (33) is hinged to one end of the base (1) through a hinge seat. The drive assembly includes a first hydraulic cylinder (42) and a connecting ear plate (45). The cylinder barrel of the first hydraulic cylinder (42) is hinged to the sliding part (12). The piston rod of the first hydraulic cylinder (42) faces the bracket plate (41). One end of the connecting ear plate (45) is fixedly connected to the bracket plate (41), and the other end of the connecting ear plate (45) is hinged to the piston rod of the first hydraulic cylinder (42). The base (1) includes a base plate (13) and a base plate (14) extending upward around the base plate (13). The sliding part (12) is U-shaped, and there are protrusions (121) on both sides of the sliding part (12). The outer side of the protrusion (121) abuts against the inner side of the base plate (14) to form a guide structure. The first oil cylinder (42) is hinged and fixed inside the protrusion (121).

2. The hydraulic support withdrawal device according to claim 1, characterized in that, The lower end of the bracket plate (41) is provided with a slewing bearing (44), and the lower end of the slewing bearing (44) is fixedly connected to the sliding part (12).

3. A method for removing a hydraulic support, comprising the hydraulic support removal device as described in claim 1, characterized in that, Includes the following steps: Place one end of the withdrawal device mounting bracket (41) facing the loading bracket (2). Control the vehicle to be loaded bracket (2) to move onto the bracket plate (41) of the hydraulic bracket removal device through its own moving mechanism. During the process, the vehicle to be loaded bracket (2) is hooked by the tightening chain ring to prevent the vehicle to be loaded bracket (2) from sliding down. Remove the tension chain link from the bracket (2) to be loaded onto the vehicle; Open the valve of the first cylinder (42), and the first cylinder (42) drives the bracket plate (41) and the vehicle-mounted bracket (2) to turn. At the same time, open the valve of the push cylinder (33), and the push cylinder (33) pushes the sliding part (12) and the vehicle-mounted bracket (2) to move laterally to avoid obstacles. Rotate the bracket plate (41) 90° and drive the bracket to be loaded (2) to rotate 90°; Control the vehicle mounting bracket (2) to move down the hydraulic bracket removal device through its own moving mechanism; Return each part of the hydraulic support removal device to its initial state, and transport the removed hydraulic support away. Push the hydraulic support withdrawal device to the next withdrawal working position; Repeat the above steps to complete the removal of all hydraulic supports.

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