Backstop force arm structure of mining belt conveyor

Abstract

The utility model relates to a backstop force arm structure of a mining belt conveyor, which comprises a backstop body and a force arm and is characterized by further comprising an anti-rotation stop block pre-buried on a foundation, one end of the force arm is detachably connected with the backstop body, the other end of the force arm is inserted into an inner hole of the anti-rotation stop block, and the other end of the force arm is fixedly connected with the backstop body. And meanwhile, the force arm is in loose fit with the anti-rotation stop block, and when the outer ring of the backstop body and the force arm limit the reverse rotation of the transmission shaft of the mining belt conveyor, the anti-rotation stop block restricts the other end of the force arm to rotate in the backstop body at the same time so as to play a stopping role. The utility model provides a split type structure, which not only can ensure accurate positioning and stable connection, but also can reliably transmit torque, is more convenient to maintain, and improves the operation efficiency.

Description

Technical Field

[0001] This utility model relates to a lever arm structure, specifically to a backstop lever arm structure for a mining belt conveyor. Background Technology

[0002] Backstops used in mining belt conveyors are crucial components that prevent the conveyor from reversing when it stops or experiences a sudden power outage. As an important part of the backstop, the rationality and stability of its installation structure directly affect the braking effect of the backstop and the overall safety of the conveyor.

[0003] In existing technologies, the connection between the lever arm and the main body of a backstop is mostly fixed using rigid methods. For example, one end of the lever arm is bolted or welded to the outside of the backstop body, or the lever arm is designed as an integral part of the backstop body, with the other end fixed to the foundation bottom using bolts or welding. Regardless of the structural form, maintenance requires the entire lever arm and main body to be disassembled for maintenance, which is difficult and labor-intensive. Furthermore, the backstops used in existing mining conveyors operate in very harsh environments, with limited space for manual maintenance. The lever arm end is located near the bottom of the foundation, making welding and fixing extremely inconvenient. Summary of the Invention

[0004] The purpose of this utility model is to provide a split-type backstop arm structure for a mining belt conveyor that not only ensures accurate positioning and stable connection, but also reliably transmits torque and is easier to maintain, thereby improving operational efficiency.

[0005] To achieve the above objectives, the technical solution of this utility model is: a backstop lever arm structure for a mining belt conveyor, comprising a backstop body and a lever arm. Its innovation lies in that it also includes an anti-rotation block pre-embedded in the foundation. One end of the lever arm is detachably connected to the outer ring of the backstop body, and the other end of the lever arm is inserted into the inner hole of the anti-rotation block. Simultaneously, the lever arm and the anti-rotation block are loosely fitted. When the outer ring of the backstop body and the lever arm restrict the reverse rotation of the mining belt conveyor's drive shaft, the anti-rotation block simultaneously restricts the other end of the lever arm from rotating within it, thus providing a stop function.

[0006] In the above technical solution, one end of the lever arm is detachably connected to the outer ring of the backstop body via a cotter pin and a pin shaft.

[0007] In the above technical solution, the backstop body has a lever arm mounting part, and the lever arm mounting part is provided with a pin hole corresponding to the connecting hole provided at one end of the lever arm. The pin passes through both the pin hole on the lever arm mounting part and the connecting hole on the lever arm, and the outer ring of the backstop body and the lever arm are detachably connected by a cotter pin.

[0008] In the above technical solution, the lever arm is an I-beam structure.

[0009] The positive effects of this utility model are as follows: After adopting the backstop lever arm structure of this utility model for a mining belt conveyor, since this utility model includes an anti-rotation block pre-embedded in the foundation, one end of the lever arm is detachably connected to the outer ring of the backstop, and the other end of the lever arm is inserted into the inner hole of the anti-rotation block. Simultaneously, the lever arm and the anti-rotation block are loosely fitted.

[0010] When the mining belt conveyor is operating normally, the inner ring of the backstop body rotates forward together with the shaft, while the outer ring of the backstop body is stationary. The lever arm is connected to the outer ring of the backstop body and is therefore also stationary.

[0011] When the drive shaft of the mining belt conveyor rotates in reverse, if the inner ring of the backstop body continues to attempt to rotate in reverse, it will transmit the backstop torque to the lever arm, which will then restrict its reverse rotation. The anti-rotation stop block simultaneously restricts the other end of the lever arm, rotating inside to act as a stop, thereby preventing the shaft from rotating in reverse.

[0012] This utility model designs the backstop body and lever arm as a separate structure, and the connection between the outer ring of the backstop body and the lever arm is detachable. This not only ensures that the lever arm and the backstop body form a firm connection to prevent loosening or falling off, but also allows the other end of the lever arm to be freely inserted into the inner hole of the anti-rotation block. This has the following advantages: First, it simplifies the installation process, avoids complex welding procedures, and reduces maintenance costs. Second, it reduces maintenance difficulty, and the backstop and its lever arm are more convenient to replace when needed. Third, it avoids stress concentration, as welding fixation may lead to stress concentration and increase the risk of damage. Attached Figure Description

[0013] Figure 1 This is a structural schematic diagram of one specific embodiment of the present invention;

[0014] Figure 2 yes Figure 1 A top-down view;

[0015] Figure 3 yes Figure 2 A schematic diagram of direction A. Detailed Implementation

[0016] The present invention will be further described below with reference to the accompanying drawings and the given embodiments, but it is not limited thereto.

[0017] like Figure 1 , 2As shown in Figure 3, a backstop lever arm structure for a mining belt conveyor includes a backstop body 1 and a lever arm 2, and also includes an anti-rotation block 3 pre-embedded in the foundation. One end of the lever arm 2 is detachably connected to the outer ring of the backstop body 1, and the other end of the lever arm 2 is inserted into the inner hole of the anti-rotation block 3. At the same time, the lever arm 2 and the anti-rotation block 3 are loosely fitted. There is a gap between the outer periphery of the other end of the lever arm 2 and the inner wall of the anti-rotation block 3. When the outer ring of the backstop body 1 and the lever arm 2 restrict the reverse rotation of the driving shaft of the mining belt conveyor, the anti-rotation block 3 simultaneously restricts the other end of the lever arm 2 from rotating inside it, thus playing a stopping role.

[0018] like Figure 1 , 2 As shown, in order to ensure a secure connection between the lever arm and the backstop body, and to prevent loosening or detachment during operation, one end of the lever arm 2 is detachably connected to the outer ring of the backstop body 1 via a cotter pin 4 and a pin shaft 5.

[0019] Furthermore, such as Figure 2 As shown, in order to further improve the rationality of the structure, the outer ring of the backstop body 1 has a lever arm mounting part 11. The lever arm mounting part 11 is provided with a pin hole corresponding to the connecting hole provided at one end of the lever arm 2. The pin 5 passes through both the pin hole on the lever arm mounting part 11 and the connecting hole on the lever arm 2, and the outer ring of the backstop body 1 and the lever arm 2 are detachably connected by the cotter pin 4.

[0020] Furthermore, such as Figure 3 As shown, in order to improve the structural strength of the lever arm itself, the lever arm 2 is an I-beam structure.

[0021] When the mining belt conveyor is operating normally, the inner ring of the backstop body 1 rotates forward together with the shaft, while the outer ring of the backstop body 1 is in a stationary state. The lever arm 2 is connected to the outer ring of the backstop body 1 and is therefore also stationary.

[0022] When the drive shaft of the mining belt conveyor rotates in reverse, if the inner ring of the backstop body 1 continues to attempt to rotate in reverse, it will transmit the backstop torque to the lever arm 2, thus restricting the reverse rotation of the lever arm 2. The anti-rotation block 3 can simultaneously restrain the other end of the lever arm, rotating inside it to act as a stop, thereby preventing the shaft from rotating in reverse.

[0023] The structural advantages of this utility model are specifically reflected in the following aspects:

[0024] Accurate positioning: The cylindrical pin effectively ensures the precise positioning of the lever arm and the backstop body, preventing performance degradation due to positional deviation.

[0025] Secure connection: The cotter pin and cylindrical pin work together to firmly connect the lever arm to the backstop body, preventing loosening or detachment during operation.

[0026] Power transmission: It can reliably transmit torque, ensuring the normal operation of the check valve.

[0027] Easy maintenance: The pins and cotter pins are standard parts with a simple structure, making them easier to replace and maintain compared to bolt or welded connections. Compared to an integrated lever arm, this significantly reduces operating costs. Furthermore, the individual lever arm remains unaffected during later maintenance of the check valve body, making installation and maintenance more convenient.

[0028] In summary, this utility model designs the backstop body and lever arm as a separate structure, and the connection between the backstop body and the lever arm is detachable. This not only ensures a firm connection between the lever arm and the backstop body, preventing loosening or detachment, but also allows the other end of the lever arm to be freely inserted into the inner hole of the anti-rotation block. This provides the following advantages: First, it simplifies the installation process, avoids complex welding procedures, and reduces maintenance costs. Second, it reduces maintenance difficulty, making it more convenient to replace the backstop and its lever arm when needed. Third, it avoids stress concentration, as welding fixation may lead to stress concentration and increase the risk of damage.

[0029] Based on the above-described preferred embodiments of this utility model, and through the foregoing description, those skilled in the art can make various changes and modifications without departing from the technical concept of this utility model. The technical scope of this utility model is not limited to the contents of the specification, but must be determined according to the scope of the claims.

Claims

1. A backstop lever arm structure for a mining belt conveyor, comprising a backstop body (1) and a lever arm (2), characterized in that: It also includes an anti-rotation block (3) pre-embedded in the foundation. One end of the lever (2) is detachably connected to the outer ring of the backstop body (1), and the other end of the lever (2) is inserted into the inner hole of the anti-rotation block (3). At the same time, the lever (2) and the anti-rotation block (3) are loosely fitted, and there is a gap between the outer periphery of the other end of the lever (2) and the inner wall of the anti-rotation block (3). The outer ring of the backstop body (1) has a lever arm mounting part (11). The lever arm mounting part (11) is provided with a pin hole corresponding to the connecting hole provided at one end of the lever arm (2). The pin (5) passes through both the pin hole on the lever arm mounting part (11) and the connecting hole on the lever arm (2). The outer ring of the backstop body (1) and the lever arm (2) are detachably connected by a cotter pin (4). When the outer ring of the backstop body (1) and the lever arm (2) restrict the reverse rotation of the drive shaft of the mining belt conveyor, the anti-rotation block (3) simultaneously restricts the other end of the lever arm (2) from rotating inside it, thus playing a blocking role.

2. The backstop lever arm structure of the mining belt conveyor according to claim 1, characterized in that: The lever arm (2) is an I-beam structure.

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