Support withdrawing device

Abstract

The utility model discloses a support withdrawing device, which relates to the technical field of coal mining, and comprises an L-shaped working surface, which comprises a vertical part and a horizontal part; the multiple supports are vertically stacked on the side face of the vertical part of the working face, and the supports are sequentially and transversely pulled from top to bottom; the monorail crane is positioned at the top of the working surface and is fixedly connected with the uppermost bracket to be drawn; according to the scheme, by means of an ordered support stacking and pulling-out mode and cooperation of the monorail crane and the mechanical arm, the support withdrawing efficiency is greatly improved, the withdrawing time is shortened, the influence on follow-up mining operation is reduced, the length design and stacking layout of the supports are reasonable, and the height of the mechanical arm is adjusted through the hydraulic jack; the whole device is kept stable in the support withdrawing process, and device faults or support damage caused by an unreasonable structure are avoided.

Description

A support retraction device Technical Field

[0001] This utility model relates to the technical field of coal mining, specifically to a support retraction device. Background Technology

[0002] In underground coal mining operations, the retraction of the working face supports is a critical and inherently dangerous task. Traditional support retraction methods often suffer from low efficiency and poor safety. For example, underground working space is limited, and the monorail cannot properly lift the supports after they are pulled out. Furthermore, the supports are not located under the monorail beam, making lifting them inconvenient. Therefore, how to rationally design the retraction device to improve the stability and convenience of support retraction is a pressing issue that needs to be addressed.

[0003] Therefore, those skilled in the art have provided a support retraction device to solve the problems mentioned. Summary of the Invention

[0004] To address the aforementioned problems, this utility model provides a support retraction device.

[0005] To achieve the above objectives, the technical solution of this utility model is as follows:

[0006] A stent retraction device, comprising:

[0007] The working surface is designed in an "L" shape, including a vertical section and a horizontal section;

[0008] Multiple supports are provided, which are vertically stacked on the side of the vertical part of the working surface, and the supports are to be pulled out horizontally from top to bottom;

[0009] A monorail crane is located at the top of the working surface and is fixedly connected to the uppermost support to be pulled out;

[0010] The outer section cut eye is located at the corner of the working surface;

[0011] The robotic arm is fixedly connected to the third adjacent support below the top support to be pulled out. The robotic arm pulls the top support horizontally and pulls it out. After pulling it out, the support is kept vertical. The monorail crane lowers the support along the center line of the working surface to the outer section cut-out position.

[0012] Preferably, a protective support is provided above the support, and the side of the support and the protective support away from the working face is the goaf area. After the uppermost support is pulled out, the protective support always remains on top of the uppermost support.

[0013] Preferably, the length of the lowermost plurality of supports is greater than the length of the upper supports, and the plurality of supports and the shield support are aligned with each other on the side closest to the vertical part of the working face.

[0014] Preferably, a hydraulic jack is fixedly mounted on a support located below the robotic arm, and the output end of the hydraulic jack is fixedly connected to the robotic arm for moving the robotic arm downward.

[0015] Preferably, the monorail crane includes a track, a traveling mechanism, and a hoisting assembly structure, with the track positioned along the top centerline of the working surface.

[0016] In summary, this utility model has the following beneficial technical effects:

[0017] 1. The orderly stacking and extraction of supports, along with the coordination of monorail cranes and robotic arms, greatly improves the efficiency of support retraction, shortens the retraction time, and reduces the impact on subsequent mining operations.

[0018] 2. The installation of the protective support effectively prevents the collapse of the roof in the goaf, ensuring the safety of workers and equipment. The precise operation of the robotic arm and monorail crane reduces safety hazards caused by shaking and collision during the withdrawal of the support.

[0019] 3. The reasonable support length design and stacking layout, as well as the hydraulic jack adjustment of the robot arm height, ensure that the entire device remains stable during the support retraction process, avoiding device failure or support damage caused by unreasonable structure. Attached Figure Description

[0020] The disclosure of this utility model is illustrated with reference to the accompanying drawings. It should be understood that the drawings are for illustrative purposes only and are not intended to limit the scope of protection of this utility model. In the drawings, the same reference numerals are used to refer to the same parts. Wherein:

[0021] Figure 1 is a schematic diagram of the preliminary connection structure of the robotic arm of this utility model;

[0022] Figure 2 is a schematic diagram of the pull-out structure of the bracket part of this utility model;

[0023] Figure 3 is a schematic diagram of the bracket angle adjustment structure of this utility model;

[0024] Figure 4 is a schematic diagram of the vertically lowered state of the bracket of this utility model.

[0025] Explanation of reference numerals in the attached drawings: 1. Working face; 2. Support frame; 3. Protective support frame; 4. Monorail crane; 5. Outer section cut-out; 6. Robotic arm; 7. Hydraulic jack. Detailed Implementation

[0026] It is readily understood that, based on the technical solution of this utility model, those skilled in the art can propose various interchangeable structural methods and implementations without altering the essential spirit of this utility model. Therefore, the following detailed embodiments and accompanying drawings are merely illustrative descriptions of the technical solution of this utility model and should not be considered as the entirety of this utility model or as limitations or restrictions on the technical solution of this utility model.

[0027] A stent retraction device, comprising:

[0028] Working face 1 is designed in an "L" shape, including a vertical section and a horizontal section. This unique "L" shape design can better adapt to the layout of the underground roadway, provide reasonable space planning for the retraction of support 2, and facilitate the extraction and transportation of support 2.

[0029] Multiple supports 2 are provided and are vertically stacked on the side of the vertical part of the working surface 1. The supports 2 are arranged horizontally from top to bottom and are arranged vertically stacked and arranged horizontally in sequence to ensure that the retraction process of supports 2 is carried out in an orderly manner and improves the retraction efficiency.

[0030] The monorail crane 4 is located at the top of the working face 1 and is fixedly connected to the uppermost support 2 to be pulled out. The monorail crane 4 can provide stable lifting and traction power for the movement of the support 2, ensuring that the support 2 moves along the predetermined route during the retraction process. During the lifting process, the connection position with the support 2 needs to be changed according to the state of the pulled-out support 2 to facilitate the turning of the support 2.

[0031] The outer section cut-in 5 is located at the corner of the working face 1. The outer section cut-in 5 serves as a temporary storage or further transportation channel for the support 2 after its retraction, making reasonable use of the roadway space and optimizing the retraction process.

[0032] The robotic arm 6 and monorail crane 4 include a track, a traveling mechanism, and a lifting assembly structure. The track is positioned along the top centerline of the working surface 1 and is fixedly connected to the third support 2 adjacent to the uppermost support 2 to be pulled out. The robotic arm 6 pulls the uppermost support 2 laterally out via a chain. After being pulled out, it pushes the support 2 directly under the lifting beam of the monorail crane 4 and keeps it vertical. The monorail crane 4 lowers the support 2 along the centerline of the working surface 1 to the outer section cut-out 5 and positions it in place. The length of the chain and the angle of the boom are adjustable.

[0033] A hydraulic jack 7 is fixedly installed on the bracket 2 located below the robot arm 6. The output end of the hydraulic jack 7 is fixedly connected to the robot arm 6. The hydraulic jack 7 can adjust the height of the robot arm 6 according to actual needs.

[0034] Repeating the above process, support 2 can be pulled out from top to bottom in sequence, which is a relatively safe process. The cooperation between monorail crane 4 and robotic arm 6 greatly improves the efficiency of support 2 retraction, shortens the retraction time, and reduces the impact on subsequent mining operations.

[0035] A protective support 3 is installed above the support 2. The side of the support 2 away from the working face 1 is the goaf. After the uppermost support 2 is withdrawn, the protective support 3 remains on top of the uppermost support 2. The installation of the protective support 3 can effectively support the goaf side during the withdrawal of the support 2, prevent the roof from collapsing, and ensure the safety of the withdrawal operation.

[0036] The lengths of the lowermost brackets 2 are greater than those of the upper brackets 2, and the brackets 2 and the shield brackets 3 are aligned with each other on the side closest to the vertical part of the working surface 1. This arrangement of length differences and alignment makes the stacking of brackets 2 more stable, and also facilitates the operation of the robotic arm 6 and the monorail crane 4, thereby improving the overall stability and reliability of the device.

[0037] In practical use, the method can be simplified. The support 2 can be placed directly at the outer section cut eye 5 by the robotic arm 6, and then the position of the monorail crane 4 can be moved to keep it directly above the support 2 for hoisting, which can improve the safety of the operator.

[0038] The technical scope of this utility model is not limited to the content described above. Those skilled in the art can make various modifications and variations to the above embodiments without departing from the technical concept of this utility model, and all such modifications and variations should fall within the protection scope of this utility model.

Claims

1. A support retraction device, characterized in that, include: The working surface (1) is set in an "L" shape, including a vertical part and a horizontal part; Multiple supports (2) are arranged vertically stacked on the side of the vertical part of the working surface (1), and the supports (2) are to be pulled out horizontally from top to bottom; a monorail crane (4) is located at the top of the working surface (1) and is fixedly connected to the uppermost support (2) to be pulled out; an outer section cut eye (5) is located at the corner of the working surface (1); a robot (6) is fixedly connected to the third support (2) adjacent to the uppermost support (2) to be pulled out, and the robot (6) pulls the uppermost support (2) to be pulled out horizontally. After being pulled out, the support (2) is kept vertical, and the monorail crane (4) lowers the support (2) along the center line of the working surface (1) to the position of the outer section cut eye (5).

2. The support retraction device according to claim 1, characterized in that: A shield support (3) is provided above the support (2). The side of the support (2) and the shield support (3) away from the working face (1) is the goaf area. After the uppermost support (2) is pulled out, the shield support (3) always remains on top of the uppermost support (2).

3. The support retraction device according to claim 2, characterized in that: The length of the lowermost brackets (2) is greater than that of the upper brackets (2), and the brackets (2) and the shield brackets (3) are aligned with the side of the vertical part of the working face (1).

4. The support retraction device according to claim 3, characterized in that: A hydraulic jack (7) is fixedly installed on the bracket (2) located below the robotic arm (6). The output end of the hydraulic jack (7) is fixedly connected to the robotic arm (6) for moving the robotic arm (6) downward.

5. The support retraction device according to claim 4, characterized in that: The monorail crane (4) includes a track, a traveling mechanism and a hoisting component structure, with the track positioned along the top centerline of the working surface (1).

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