Large-mining-height hydraulic support movable maintenance platform based on coal mining machine

Abstract

The utility model provides a coal mining machine-based large mining height hydraulic support mobile maintenance platform, which comprises a mobile hoisting platform, the mobile hoisting platform comprises a track, a base and a suspension arm, the track is arranged at the upper part of the coal mining machine, and the track is arranged along the length direction of the coal mining machine; the base is arranged on the track and moves on the track, and the suspension arm is arranged at the upper part of the base and swings up and down on the base. The large-mining-height hydraulic support mobile maintenance platform based on the coal mining machine has the advantages that when the mobile hoisting platform works, the height of the large-mining-height hydraulic support does not need to be reduced, maintenance workers can safely and stably reach the place, needing maintenance work, on the hydraulic support under the condition that the normal working state of the hydraulic support is not interfered, and the maintenance work efficiency is improved. And the carrying capacity is high, and the parts can be conveniently conveyed when being replaced.

Description

Technical Field

[0001] This utility model relates to a mobile lifting platform, specifically, to a mobile maintenance platform for a high-lift hydraulic support based on a coal mining machine. Background Technology

[0002] For high-rise hydraulic supports, such as those 8.8 meters or even 10 meters high, the maintenance and replacement of hydraulic support components becomes a challenge. Currently, when repairing or replacing components at high positions on high-rise hydraulic supports, ladders and lifting trolleys are generally unable to reach the high positions of the supports. It is necessary to first lower the hydraulic support to an operable position, and then maintenance workers can use ladders or lifting trolleys to access it for repairs.

[0003] Currently, among the existing lifting trolley structures, such as the coal mine hydraulic support maintenance platform disclosed in Chinese Utility Model Patent CN202220618331.1, the lifting is directly controlled by hydraulic rods, resulting in poor overall balance of this type of lifting trolley; and a portable maintenance frame for large hydraulic supports disclosed in Chinese Utility Model Patent CN201921289575.4, which controls the lifting through hinged support plates (scissor structure), has a limited load-bearing capacity.

[0004] Furthermore, while lowering the height of hydraulic supports facilitates maintenance and replacement work, it also carries certain risks. Lowering the height of the hydraulic supports means that the roof in that area loses support, potentially causing roof collapse, rendering roof maintenance ineffective, and injuring personnel. Moreover, the parts that need to be repaired or replaced on hydraulic supports are generally quite heavy; for example, a single hydraulic cylinder can weigh over 100 kilograms. Using ladders to move these parts is impossible, and using a lifting trolley for maintenance may exceed its load capacity or cause it to lose balance, posing a certain risk.

[0005] In order to solve the above problems, people have been seeking an ideal technological solution. Utility Model Content

[0006] The purpose of this utility model is to address the shortcomings of existing technologies by providing a mobile maintenance platform for high-extraction hydraulic supports based on coal mining machines. This platform allows maintenance workers to safely and stably reach the locations on the hydraulic supports requiring maintenance work without lowering the height of the high-extraction hydraulic supports or interfering with their normal operation. It also has a high load capacity, making it convenient to transport parts when they need to be replaced.

[0007] To achieve the above objectives, the technical solution adopted by this utility model is as follows: it includes a mobile lifting platform, which includes a track, a base, and a boom. The track is located on the upper part of the coal mining machine and is arranged along the length direction of the coal mining machine. The base is located on the track and moves on the track. The boom is located on the upper part of the base and swings up and down on the base.

[0008] Based on the above, the base includes a sliding seat and a rotating seat that can rotate relative to each other. The sliding seat is located on the upper part of the track and moves on the track. The rotating seat is located on the upper part of the sliding seat and rotates horizontally on the sliding seat. The boom is located on the upper part of the rotating seat.

[0009] Based on the above, a slewing support bearing is provided between the sliding seat and the rotating seat, and a hydraulic motor drives the rotating seat to rotate on the sliding seat as a hydraulic actuator.

[0010] Based on the above, a drive gear is provided at the bottom of the base, and a rack that meshes with the drive gear is provided on the track. A hydraulic motor, as a hydraulic actuator, drives the drive gear to move the base on the track.

[0011] Based on the above, a braking device is provided on the hydraulic motor.

[0012] Based on the above, the upper part of the base is provided with an ear plate, and a hydraulic cylinder is provided between the boom and the base. One end of the boom is rotatably connected to the ear plate, and the hydraulic cylinder acts as a hydraulic actuator to drive the other end of the boom to swing up and down.

[0013] Based on the above, the boom is a telescopic boom, and a hydraulic cylinder is provided inside the boom. The hydraulic cylinder serves as a hydraulic actuator to drive the boom to extend and retract.

[0014] Based on the above, a manned platform is provided at the front end of the boom.

[0015] Based on the above, a hydraulic cylinder is provided between the boom and the manned platform. The hydraulic cylinder serves as a hydraulic actuator to drive and adjust the angle of the manned platform.

[0016] Based on the above, it also includes a hydraulic control system, which is used to control the hydraulic actuators on the mobile lifting platform, and the hydraulic control system includes a remote control module.

[0017] This utility model has substantial features and advancements compared to existing technologies. Specifically, the mobile maintenance platform for high-height hydraulic supports based on coal mining machines has the following advantages: It utilizes the existing coal mining machine at the working face, employing a mobile lifting platform that can move horizontally, rotate horizontally, swing vertically, and extend and retract horizontally, providing a wide operating range; the track prevents overall tipping, and the base can adapt to working faces with inclination angles, ensuring high safety; the boom has a high load capacity and can be retracted when not in use; maintenance work can be completed using remote control, ensuring personnel safety. When operating the mobile lifting platform, there is no need to lower the height of the high-height hydraulic supports. Without interfering with the normal operation of the hydraulic supports, maintenance workers can safely and stably reach the location on the hydraulic supports requiring maintenance. The high load capacity facilitates the convenient transport of replacement parts. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the overall structure of this utility model in its working state;

[0019] Figure 2 This is a side view of the overall structure of this utility model;

[0020] Figure 3 This is a top view of the overall structure of this utility model;

[0021] In the figure, the attached figures are labeled as follows:

[0022] Mobile lifting platform 100, track 10, base 20, sliding seat 21, rotating seat 22, boom 30, lug 31, and personnel platform 40;

[0023] Coal mining machine 200;

[0024] Hydraulic support 300. Detailed Implementation

[0025] The technical solution of this utility model will be further described in detail below through specific embodiments.

[0026] like Figures 1-3 As shown, the mobile maintenance platform for high-lift hydraulic supports based on a coal mining machine of this utility model includes a mobile lifting platform 100. The mobile lifting platform 100 is set on the coal mining machine 200 and can move with the coal mining machine 200 to the approximate position of the hydraulic support 300 that needs maintenance. After reaching the target approximate position, the mobile lifting platform 100 can move horizontally and swing up and down on the coal mining machine 200 to accurately reach the location where maintenance work needs to be carried out and to complete the transportation of maintenance personnel and hydraulic support parts.

[0027] Specifically, the mobile lifting platform 100 includes a track 10, a base 20, and a boom 30. The track 10 is located on top of the coal mining machine 200 and is arranged along the length of the coal mining machine 200. Preferably, the track 10 adopts a double-row parallel track to ensure the stability of the mobile lifting platform 100. The base 20 is located on the track 10 and moves on the track 10 to complete the fine adjustment of the position of the mobile lifting platform 100. Based on the track 10, the base 20 can prevent the base 20 from tipping over to a certain extent, ensuring the stability of the mobile lifting platform 100. For example, H-shaped wheels can be set at the bottom of the base 20 as load-bearing wheels or drive wheels, and the H-shaped wheels roll on the track 10. The boom 30 is located on top of the base 20 and swings on the base 20. During the up-and-down swinging process, the boom 30 completes the transportation of maintenance personnel and hydraulic support parts. Figure 1 The dotted line in the diagram represents the swing of the boom 30.

[0028] like Figure 2 As shown, the base 20 includes a sliding seat 21 and a rotating seat 22 that can rotate relative to each other. The sliding seat 21 is located on the upper part of the track 10 and moves on the track 10. The rotating seat 22 is located on the upper part of the sliding seat 21 and rotates horizontally on the sliding seat 21. The boom 30 is located on the upper part of the rotating seat 22 and swings on the rotating seat 22. In this way, on the one hand, the boom 30 can rotate on the base 20, improving the positioning accuracy of the mobile lifting platform 100 and increasing the effective range of the mobile lifting platform 100. On the other hand, when the mobile lifting platform 100 is not needed, the length direction of the boom 30 can be made parallel to the length direction of the coal mining machine 200, so as to complete the storage of the boom 30 without affecting the passage of the coal mining machine 200. For reference, Figure 3 The dotted line in the diagram represents the storage layout of the boom 30.

[0029] In one embodiment, a slewing bearing is provided between the sliding seat 21 and the rotating seat 22 so that the sliding seat 21 and the rotating seat 22 can rotate relative to each other; the hydraulic motor serves as the hydraulic actuator of the rotating seat 22, driving the rotating seat 22 to rotate on the sliding seat 21; preferably, the hydraulic motor is provided with a braking device so that the sliding seat 21 and the rotating seat 22 can be braked relative to each other to prevent accidents during maintenance and replacement operations.

[0030] In one embodiment, in addition to load-bearing wheels (such as H-shaped wheels on the track 10) that support the load, a gear and rack structure is also provided between the bottom of the base 20 (i.e., the bottom of the sliding seat 21) and the track 10 to enable driving engagement between the base 20 and the track 10. Specifically, the bottom of the base 20 is provided with a drive gear, and the track 10 is provided with a rack that meshes with the drive gear. For example, the track 10 is configured as an I-shaped track, and the rack is provided on the web of the I-shaped track. The hydraulic motor acts as the hydraulic actuator of the drive gear, driving the base 20 to move on the track 10. Preferably, the hydraulic motor is provided with a braking device, which brakes the base 20 and the track 10 relative to each other through the braking of the gear and rack structure. This prevents the base 20 from moving on the track 10 due to its own weight when the coal mining machine 200 is on an inclined plane, allowing the mobile lifting platform 100 to operate normally at a certain inclination angle.

[0031] like Figure 2 , Figure 3 As shown, the base 20 is provided with an ear plate 31 on the upper part. The ear plate 31 is rotatably connected to one end of the boom 30, so that the other end of the boom 30 can swing up and down on the upper part of the base 20 (i.e., the upper part of the rotating seat 22). A hydraulic cylinder is provided between the boom 30 and the base 20 to control the lifting (i.e., swinging up and down) of the other end of the boom 30. The hydraulic cylinder is a hydraulic actuator for the boom 30 to swing up and down. One end of the hydraulic cylinder is connected to the base 20 (specifically the rotating seat 22), and the other end of the hydraulic cylinder is connected to the boom 30. During the extension and retraction of the hydraulic cylinder, the boom 30 is controlled to complete the swinging up and down.

[0032] like Figure 1 , Figure 2 , Figure 3 As shown, the boom 30 adopts a telescopic boom to increase the applicable range of the boom 30 and reduce the storage volume of the boom 30. The boom 30 is equipped with a hydraulic cylinder that can control the extension and retraction of the boom 30. The hydraulic cylinder is a hydraulic actuator that drives the extension and retraction of the boom 30.

[0033] like Figure 1 , Figure 2 , Figure 3 As shown, a manned platform 40 is provided at the front end of the boom 30. The manned platform 40 adopts a basket structure. The connection point between the boom 30 and the manned platform 40 is located at the upper end of the manned platform 40. The boom 30 and the manned platform are connected by a hinge. A hydraulic cylinder that can adjust the angle of the manned platform 40 is provided between the boom 30 and the manned platform 40. The hydraulic cylinder is a hydraulic actuator that keeps the manned platform 40 balanced. One end of the hydraulic cylinder is connected to the boom 30, and the other end of the hydraulic cylinder is connected to the bottom of the manned platform 40. The extension and retraction of the hydraulic cylinder drives the angle adjustment of the manned platform 40.

[0034] In another embodiment, the front end of the boom 30 can be replaced with a crusher instead of a manned platform 40. Based on the flexibility of the mobile lifting platform 100, the crusher can be used to crush large pieces of coal, reducing the labor intensity of workers.

[0035] The mobile lifting platform 100 also includes a hydraulic control system for controlling the hydraulic actuators on the mobile lifting platform 100. The controllable hydraulic actuators include: a hydraulic motor that drives the rotating base 22 to rotate on the sliding base 21; a hydraulic motor that drives the base 20 to move on the track 10; a hydraulic cylinder that drives the boom 30 to swing up and down; a hydraulic cylinder that drives the boom 30 to extend and retract; and a hydraulic cylinder that drives the angle adjustment of the personnel platform 40. For example, the hydraulic actuators may include control valves for overall hydraulic fluid control, and may also include hydraulic locks for locking the state of the hydraulic actuators. The hydraulic control system also includes a remote control module, enabling remote operation of the hydraulic actuators, allowing operators to operate remotely and reducing the risk of accidents.

[0036] This utility model relates to a mobile maintenance platform for high-height hydraulic supports based on a coal mining machine. Utilizing the existing coal mining machine 200 at the working face, it employs a mobile lifting platform 100 capable of horizontal movement, horizontal rotation, vertical swinging, and forward and backward extension, providing a wide operating range. The track 10 prevents overall tipping, and the base 20 allows operation on inclined working faces, ensuring high safety. The boom 30 has a high load capacity and can be retracted when not in use. Maintenance work can be completed using remote control, ensuring personnel safety. This mobile maintenance platform for high-height hydraulic supports based on a coal mining machine eliminates the need to lower the height of the high-height hydraulic support 300. Without interfering with the normal operation of the hydraulic support 300, maintenance workers can safely and stably reach the location requiring maintenance on the hydraulic support 300. Its high load capacity facilitates the convenient transport of replacement parts.

[0037] Finally, it should be noted that the above embodiments are only used to illustrate the technical solution of this utility model and not to limit it; although the utility model has been described in detail with reference to preferred embodiments, those skilled in the art should understand that modifications can still be made to the specific implementation of this utility model or equivalent substitutions can be made to some technical features without departing from the spirit of the technical solution of this utility model, and all such modifications and substitutions should be covered within the scope of the technical solution claimed by this utility model.

Claims

1. A coal cutter based high extraction hydraulic support mobile maintenance platform, characterized in that, The mobile lifting platform (100) comprises a track (10), a base (20) and a boom (30), the track (10) is arranged on the upper part of a coal mining machine (200), and the track (10) is arranged along the length direction of the coal mining machine (200); the base (20) is arranged on the track (10) and moves on the track (10), and the boom (30) is arranged on the upper part of the base (20) and swings up and down on the base (20).

2. The shearer-based high coal cutting hydraulic support moving maintenance platform according to claim 1, characterized in that, The base (20) comprises a sliding seat (21) and a rotating seat (22) which can rotate relative to each other, the sliding seat (21) is arranged on the upper part of the track (10) and moves on the track (10), the rotating seat (22) is arranged on the upper part of the sliding seat (21) and rotates horizontally on the sliding seat (21), and the boom (30) is arranged on the upper part of the rotating seat (22).

3. The shearer-based high coal cutting hydraulic support moving maintenance platform according to claim 2, characterized in that, A rotary support bearing is arranged between the sliding seat (21) and the rotating seat (22), and a hydraulic motor is used as a hydraulic executing element to drive the rotating seat (22) to rotate on the sliding seat (21).

4. The shearer-based high coal cutting hydraulic support moving maintenance platform according to claim 1, characterized in that, A drive gear is arranged at the bottom of the base (20), a rack is arranged on the track (10) and engages with the drive gear, and a hydraulic motor is used as a hydraulic executing element to drive the drive gear to move the base (20) on the track (10).

5. The shearer-based high-rising hydraulic support moving maintenance platform according to claim 3 or 4, characterized in that, A brake device is arranged on the hydraulic motor.

6. The shearer-based high coal cutting hydraulic support moving maintenance platform according to claim 1, characterized in that, An ear plate (31) is arranged on the upper part of the base (20), a hydraulic oil cylinder is arranged between the boom (30) and the base (20), one end of the boom (30) is rotationally connected with the ear plate (31), and the hydraulic oil cylinder is used as a hydraulic executing element to drive the other end of the boom (30) to swing up and down.

7. The shearer-based high coal cutting hydraulic support moving maintenance platform according to claim 1, characterized in that, The boom (30) is a telescopic boom, a hydraulic oil cylinder is arranged in the boom (30), and the hydraulic oil cylinder is used as a hydraulic executing element to drive the boom (30) to extend and retract.

8. The shearer-based high coal cutting hydraulic support moving maintenance platform according to claim 1, characterized in that, A manned platform (40) is arranged at the front end of the boom (30).

9. The shearer-based high coal cutting hydraulic support moving maintenance platform according to claim 8, characterized in that, A hydraulic oil cylinder is arranged between the boom (30) and the manned platform (40), and the hydraulic oil cylinder is used as a hydraulic executing element to drive the angle of the manned platform (40) to be adjusted.

10. The shearer-based high hydraulic support moving maintenance platform according to claim 3 or 4 or 6 or 7 or 9, characterized in that, A hydraulic control system is further arranged, which is used to control the hydraulic executing elements on the mobile lifting platform (100) and comprises a remote control module.

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