Boom steering limiting mechanism, boom and ore pass dredging device

Abstract

The utility model discloses an arm support steering limiting mechanism, an arm support and an ore pass dredging device in the technical field of mining instruments, the limiting mechanism comprises a rotary supporting part used for being connected with a front arm support and providing steering, a pair of limiting switches is arranged at the non-rotating end of the rotary supporting part, a limiting switch triggering piece is arranged on the front arm support, and a limiting switch is arranged on the limiting switch triggering piece. The two limiting switches are located at the two ends of the moving path of the limiting switch triggering piece respectively. The limiting switch triggering piece is arranged on the front arm frame, and the pair of limiting switches is arranged on the rotation path of the limiting switches, so that the angle of the front arm frame does not deviate too much compared with the angle of the rear arm frame in the rotation process of the front arm frame relative to the rear arm frame, and stabilization is facilitated; and the rotary supporting part is controlled to stop rotating through contact of the limiting switch, so that the impact force is reduced, and stable operation of the rotary supporting part is ensured.

Description

Technical Field

[0001] This utility model relates to the field of mining machinery, specifically to a boom steering limit mechanism, a boom, and a mine chute clearing device. Background Technology

[0002] A mine chute is a tunnel through which ore flows downwards by natural drop. Due to the shape of the ore, blockages often occur during the chute process. Common methods for dealing with mine chute blockages include: mechanical prying, drilling and blasting, blasting with explosive charges suspended by bamboo poles, blasting with explosive charges suspended by hydrogen balloons, and mining rockets.

[0003] Among them, the bamboo pole suspension explosive charge blasting method is relatively efficient. For example, the safety unblocking mobile device for mine chute disclosed in application number 202510866337.9 uses a transport vehicle with a mechanical arm to extend a bamboo pole with explosives to the blasting point for blasting. Due to the complex environment of mine chute, the mechanical arm needs to be able to bend and extend and have the ability to bypass obstacles. Therefore, the mechanical arm is often designed as two sections, including a front boom and a rear boom. Since the front boom is prone to tipping over when the rotation angle is large, a rotation angle limiting structure is set. Common limiting structures are directly subjected to force. Under the condition of large rotation force, direct force obstruction can easily cause wear, burn out the motor and other problems. Summary of the Invention

[0004] The purpose of this utility model is to provide a boom steering limit mechanism, a boom and a mine chute dredging device, which solves the problem of large stress on the existing slewing limit structure.

[0005] This utility model achieves the above objectives through the following technical solutions:

[0006] A boom steering limiting mechanism includes a slewing support for connecting to the boom and providing steering, a pair of limit switches are provided at the non-rotating end of the slewing support, and limit switch triggers are provided on the boom, with the two limit switches located at opposite ends of the movement path of the limit switch triggers.

[0007] As a preferred embodiment of this utility model, the rotating end of the slewing support is further provided with a boom mounting seat for connecting the boom frame. The axial direction of the slewing support is perpendicular to the length direction of the boom frame. This embodiment enables the boom frame to have a slewing function by setting the slewing support.

[0008] As a preferred embodiment of this utility model, the non-rotating end of the slewing support is further provided with a slewing support mounting seat. This embodiment facilitates its installation with the rear boom through the slewing support mounting seat.

[0009] As a preferred embodiment of this utility model, the bottom of the slewing support mounting base is provided with a swing cylinder and is connected to the rotating end of the swing cylinder. The non-rotating end of the swing cylinder is provided with a connector for installation with the rear boom. This embodiment enables the front boom and the rear boom to be movably connected through the connector and the swing cylinder, making the angle adjustment more flexible.

[0010] As a preferred embodiment of this utility model, the rotary support mounting base is provided with a mounting plate for connecting the limit switch. In this embodiment, the mounting plate allows the limit switch to extend to the path of the limit switch trigger.

[0011] In order to apply the above-mentioned boom steering limiting mechanism, this utility model also proposes a boom, including a rear boom and a front boom, wherein the rear boom and the front boom are connected by any of the above-mentioned boom steering limiting mechanisms.

[0012] In order to apply the above-mentioned boom, this utility model also proposes a mine chute dredging device, including a transport vehicle, on which the above-mentioned boom is provided. The transport vehicle is connected to the rear boom, and a grab is provided on the front boom. The grab is used to grab bamboo poles to drop explosives.

[0013] The beneficial effects of this utility model are as follows: By setting a limit switch trigger on the front boom and setting a pair of limit switches on the rotation path of the limit switch, the angle of the front boom will not deviate too much from the angle of the rear boom during the rotation of the front boom relative to the rear boom, which helps to stabilize the system. Furthermore, by controlling the slewing support to stop rotating through the contact of the limit switches, the impact force is reduced, ensuring the stable operation of the slewing support. Attached Figure Description

[0014] Figure 1 This is the left axonometric drawing of this utility model;

[0015] Figure 2 This is the right-side axonometric drawing of this utility model;

[0016] Figure 3 This is the front view of the present invention;

[0017] Figure 4 This is a side view of the present invention;

[0018] In the diagram: 1. Front boom; 2. Boom mounting base; 3. Limit switch trigger; 4. Slewing support; 5. Slewing support mounting base; 6. Swing cylinder; 7. Connector; 8. Mounting plate; 9. Limit switch. Detailed Implementation

[0019] The present application will now be described in further detail with reference to the accompanying drawings. It should be noted that the following specific embodiments are only used to further illustrate the present application and should not be construed as limiting the scope of protection of the present application. Those skilled in the art can make some non-essential improvements and adjustments to the present application based on the above application content.

[0020] Example 1

[0021] like Figure 1-4 As shown, a boom steering limit mechanism includes a slewing support 4 for connecting the boom 1 and providing steering. A pair of limit switches 9 are provided on the non-rotating end of the slewing support 4. Limit switch triggers 3 are provided on the boom 1. The two limit switches 9 are located at both ends of the movement path of the limit switch triggers 3.

[0022] This solution sets a limit switch trigger 3 on the front boom 1 and sets a pair of limit switches 9 on the rotation path of the limit switches 9, so that the angle of the front boom 1 will not deviate too much from the angle of the rear boom during the rotation of the front boom 1 relative to the rear boom, which helps to stabilize it. In addition, the limit switches 9 contact control to stop the rotation of the slewing support 4, which helps to reduce the impact force and ensure the stable operation of the slewing support 4.

[0023] During use, the slewing support 4 drives the front boom 1 to rotate. When the limit switch trigger 3 contacts the limit switch 9, the slewing support 4 stops operating and will not cause a large impact force.

[0024] Preferably, the rotating end of the slewing support 4 is also provided with a boom mounting seat 2 for connecting the boom 1. The axial direction of the slewing support 4 is perpendicular to the length direction of the boom 1. This solution enables the boom 1 to have a slewing function by setting the slewing support 4, and the boom mounting seat 2 is used to stably connect the boom 1.

[0025] Preferably, the non-rotating end of the slewing support part 4 is also provided with a slewing support mounting seat 5. This solution facilitates its installation with the rear boom through the slewing support mounting seat 5.

[0026] Preferably, the bottom of the slewing support mounting base 5 is provided with a swing cylinder 6 and is connected to the rotating end of the swing cylinder 6. The non-rotating end of the swing cylinder 6 is provided with a connector 7 for installation with the rear boom. This solution enables the front boom 1 and the rear boom to be movably connected through the connector 7 and the swing cylinder 6, making the angle adjustment more flexible.

[0027] Please see Figure 3-4 Connector 7 is used to install the rear boom, and the extension direction of the rear boom is... Figure 3In this embodiment, the front boom 1 is parallel to the rear boom. The limit switches 9 are located on both sides of the rear boom extension direction, so that the rotation range of the front boom 1 is -45° to 45° compared to the rear boom.

[0028] Preferably, the rotary support mounting base 5 is provided with a mounting plate 8 for connecting the limit switch 9. In this solution, the mounting plate 8 allows the limit switch 9 to extend to the path of the limit switch trigger 3.

[0029] In order to apply the above-mentioned boom steering limiting mechanism, this utility model also proposes a boom, including a rear boom and a front boom 1, wherein the rear boom and the front boom 1 are connected by any of the above-mentioned boom steering limiting mechanisms.

[0030] In order to apply the above-mentioned boom, this utility model also proposes a mine chute dredging device, including a transport vehicle, on which the above-mentioned boom is provided. The transport vehicle is connected to the rear boom, and a grab is provided on the front boom 1. The grab is used to grab bamboo poles to drop explosives.

[0031] Specific implementation method: The explosive is fixed to the top of the bamboo pole, and then the bamboo pole is fixed with a grab. The transport vehicle is moved to the blasting position. When the appropriate position is reached, the transport vehicle is parked and fixed. If necessary, reinforcement and support are provided. Then the boom angle is adjusted. During the adjustment process, when the front boom 1 is adjusting the rotation angle, it is restricted by the limit switch trigger 3 to prevent the center of gravity of the transport vehicle from becoming unstable. Finally, the front boom 1 and the rear boom reach the appropriate angle so that the explosive at the top of the bamboo pole reaches the appropriate blasting position.

[0032] The embodiments described above are merely examples of several implementations of this utility model, and while the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of this utility model patent. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of this utility model, and these modifications and improvements all fall within the protection scope of this utility model.

Claims

1. A boom steering and limiting mechanism, characterized in that, It includes a slewing support (4) for connecting the boom (1) and providing steering. The non-rotating end of the slewing support (4) is provided with a pair of limit switches (9). The boom (1) is provided with limit switch triggers (3). The two limit switches (9) are located at both ends of the movement path of the limit switch triggers (3).

2. The boom steering limiting mechanism according to claim 1, characterized in that, The rotating end of the slewing support (4) is also provided with a boom mounting seat (2) for connecting the boom (1), and the axial direction of the slewing support (4) is perpendicular to the length direction of the boom (1).

3. The boom steering limiting mechanism according to claim 1, characterized in that, The non-rotating end of the slewing support (4) is also provided with a slewing support mounting base (5).

4. The boom steering limiting mechanism according to claim 3, characterized in that, The bottom of the slewing support mounting base (5) is provided with a swing cylinder (6) and is connected to the rotating end of the swing cylinder (6). The non-rotating end of the swing cylinder (6) is provided with a connector (7) for installation with the rear boom.

5. A boom steering limiting mechanism according to claim 3, characterized in that, The slewing support mounting base (5) is provided with a mounting plate (8) for connecting the limit switch (9).

6. A boom, characterized in that, It includes a rear boom and a front boom (1), and the rear boom and the front boom (1) are connected by a boom steering limit mechanism as described in any one of claims 1-5.

7. A mine chute dredging device, characterized in that, The vehicle includes a transport vehicle equipped with a boom as described in claim 6. The transport vehicle is connected to the rear boom, and a grab is provided on the front boom (1). The grab is used to grab bamboo poles to drop explosives.

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