Cantilever excavator laterally movable rear support device

Abstract

The utility model relates to the technical field of boom roadheader, concretely relates to a side -shifting formula rear support device of boom roadheader, two slide rails are oppositely arranged in the bottom of rear support frame, and the space between two slide rails constitutes a slide, and the mobile seat is slidably arranged in the slide, support assembly is arranged on both sides of the mobile seat, and support assembly includes support leg and support oil cylinder, the upper end of support leg is hinged with mobile seat, and the lower end is hingedly connected with support shoe, the tail end and piston end of support oil cylinder are hinged with mobile seat and the lower end of support leg respectively, the slip oil cylinder that is located the outside of mobile seat is equipped below rear support frame, and the tail end and piston end of slip oil cylinder are hinged with rear support frame and mobile seat respectively. The utility model can realize the lateral movement of boom roadheader, adjusts the attitude of boom roadheader, can provide lateral support for boom roadheader simultaneously, and improves the stability when boom roadheader cuts.

Description

Technical Field

[0001] This utility model relates to the field of cantilever tunneling machine technology, and specifically to a side-moving rear support device for a cantilever tunneling machine. Background Technology

[0002] Cantilever tunneling machines are mainly used for rock breaking and excavation operations in tunnels or mine roadways. They have functions such as rock breaking, loading and transportation, and support coordination. The rear support section of the cantilever tunneling machine mainly plays a role in dynamic stability support. It uses a hydraulic system to hold the tunnel wall or surrounding structure in place, preventing the machine body from shifting or vibrating, and ensuring excavation accuracy. The rear support section of the cantilever tunneling machine includes a rear support frame, support legs, and support cylinders. The rear support frame is connected to the main body of the cantilever tunneling machine, and the support cylinders connect the rear support frame and the support legs. Although this structure can raise and lower the rear of the cantilever tunneling machine vertically by extending and retracting the piston end of the support cylinder, it cannot achieve lateral movement adjustment or lateral support. Summary of the Invention

[0003] This invention addresses the problem that the rear support of existing cantilever tunneling machines cannot achieve lateral movement adjustment and lateral support. It provides a laterally movable rear support device for cantilever tunneling machines. This rear support device enables lateral movement of the cantilever tunneling machine, adjusts its posture, and provides lateral support, thereby improving the stability of the cantilever tunneling machine during cutting operations.

[0004] To achieve the above objectives, the technical solution of this utility model is: a laterally movable rear support device for a cantilever tunneling machine, including a rear support frame, with two slide rails arranged opposite each other at the bottom of the rear support frame, the space between the two slide rails forming a slide rail, and a movable seat slidably arranged in the slide rail, so that the movable seat can move left and right at the bottom of the rear support frame through the slide rail formed by the two slide rails.

[0005] Support assemblies are provided on both sides of the movable base. Each support assembly includes support legs and support cylinders. The upper end of the support leg is hinged to the movable base, and the lower end is hinged to a support shoe. The tail end and piston end of the support cylinder are respectively hinged to the lower ends of the movable base and the support legs. By extending and retracting the piston ends of the support cylinders of the two support assemblies, the support legs and support shoes on both sides extend to the sides and touch the ground, providing lateral and bottom support for the cantilever tunneling machine, thereby improving the stability of the cantilever tunneling machine during cutting operations.

[0006] A sliding cylinder is located below the rear support frame and outside the movable seat. The tail end and piston end of the sliding cylinder are hinged to the rear support frame and the movable seat, respectively. The piston end of the sliding cylinder moves horizontally and vertically, causing the movable seat to move left and right, thereby enabling the rear support frame of the cantilever tunneling machine to slide left and right relative to the movable seat, and thus adjusting the attitude of the cantilever tunneling machine.

[0007] Furthermore, the slide rail has a U-shaped cross-section, and a wear-resistant plate is fixedly installed at the bottom of the rear support frame, located between the two slide rails. The wear-resistant plate protects the bottom of the rear support frame and extends its service life.

[0008] Furthermore, limit plates are provided at the rear ends of the two slide rails. The movable seat includes a sliding plate and a sliding base disposed at the bottom of the sliding plate. The sliding plate is slidably disposed inside the slide track, with its two sides located within the two slide rails respectively. The limit plates limit and block the sliding plate within the slide track, preventing the sliding plate from sliding out of the slide track. Through the cooperation between the sliding plate and the two slide rails, the piston end of the sliding cylinder can drive the movable base to slide left and right at the bottom of the rear support frame.

[0009] Furthermore, the upper end of the support leg is hinged to the sliding seat, and the top of the support shoe is provided with a lower hinge seat. The lower end of the support leg is hinged to the lower hinge seat, so that the piston end of the support cylinder can drive the support leg to extend or retract to the side.

[0010] Furthermore, the support cylinder is inclinedly disposed above the support leg, and an upper hinge seat is fixedly disposed at the top of the lower end of the support leg. The piston end of the support cylinder is hinged to the upper hinge seat. The purpose is to enable the support leg to extend or retract when the piston end of the support cylinder performs telescopic movement.

[0011] Furthermore, the sliding seat has symmetrically arranged side hinge seats on both sides inside, and the tail end of the support cylinder is fixedly connected to an ear plate, which is hinged to the side hinge seats. Through the action of the side hinge seats, the piston end of the support cylinder can drive the support leg to extend or retract.

[0012] Furthermore, a front hinge seat is fixedly connected to the outer side of the sliding seat, and a rear hinge seat is fixedly provided at the bottom of the rear support frame. The tail end and piston end of the sliding cylinder are respectively hinged to the rear hinge seat and the front hinge seat. Through the action of the front hinge seat and the rear hinge seat, the piston end of the sliding cylinder can synchronously drive the sliding seat to slide left and right when it makes a telescopic movement.

[0013] The beneficial effects of this utility model through the above technical solution are as follows: This utility model has a reasonable structure and good performance. It can not only realize the lateral movement of the cantilever tunneling machine and adjust its posture to improve the cutting efficiency and quality of the cantilever tunneling machine, but also provide lateral support for the cantilever tunneling machine to improve its stability during cutting operations.

[0014] This invention provides lateral and bottom support for the cantilever tunneling machine by placing the movable seat in the middle of the bottom of the rear support frame and extending the piston ends of the support cylinders of the support components on both sides of the movable seat, thereby driving the support legs and support shoes to extend to the side and touch the ground. This improves the stability of the cantilever tunneling machine during cutting operations.

[0015] This invention uses the telescopic movement of the piston end of the sliding cylinder to drive the moving seat to slide left and right in the slide rail at the bottom of the rear support frame, thereby realizing the left and right movement of the rear support frame of the cantilever tunneling machine relative to the moving seat and support components, and thus achieving the effect of lateral adjustment of the cantilever tunneling machine's posture. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the structure of a laterally movable rear support device for a cantilever tunneling machine according to this utility model. Figure 1 ; Figure 2 This is a schematic diagram of the structure of a laterally movable rear support device for a cantilever tunneling machine according to this utility model. Figure 2 ; Figure 3 This is a schematic diagram of the structure of the rear support frame of this utility model. Figure 1 ; Figure 4 This is a schematic diagram of the structure of the rear support frame of this utility model. Figure 2 ; Figure 5 This is a schematic diagram of the structure of this utility model in use (sliding cylinder retracted state); Figure 6 This is a schematic diagram of the structure of this utility model in use (sliding cylinder extended state).

[0017] The numbers in the attached diagram are as follows: 1 is the rear support frame, 2 is the slide rail, 3 is the wear-resistant plate, 4 is the limiting block plate, 5 is the sliding plate, 6 is the sliding seat, 601 is the side hinge seat, 7 is the rear hinge seat, 8 is the front hinge seat, 9 is the sliding cylinder, 10 is the support leg, 11 is the upper hinge seat, 12 is the support cylinder, 13 is the support shoe, and 14 is the lower hinge seat. Detailed Implementation

[0018] The present invention will be further described below with reference to the accompanying drawings and specific embodiments: like Figures 1-6As shown, a laterally movable rear support device for a cantilever tunneling machine includes a rear support frame 1. Two slide rails 2 are arranged opposite each other at the bottom of the rear support frame 1, and the space between the two slide rails 2 forms a slide rail. A movable seat is slidably disposed within the slide rail. In this embodiment, the rear support frame 1 is connected to the body of the cantilever tunneling machine. The two slide rails 2 are fixedly installed at the bottom of the rear support frame 1. The movable seat is slidably connected to the slide rails 2 and the rear support frame 1. The design of the two slide rails 2 facilitates the left-right movement of the movable seat at the bottom of the rear support frame.

[0019] Support assemblies are provided on both sides of the movable base. Each support assembly includes a support leg 10 and a support cylinder 12. The upper end of the support leg 10 is hinged to the movable base, and the lower end is hinged to a support shoe 13. The tail end and piston end of the support cylinder 12 are respectively hinged to the lower ends of the movable base and the support leg 10. In this embodiment, there are two support assemblies. When the piston end of the support cylinder 12 extends, it causes the support leg 10 and support shoe 13 to extend to the side and touch the ground, providing lateral and bottom support for the cantilever tunneling machine. Conversely, when the piston end of the support cylinder 12 retracts, it causes the support leg 10 and support shoe 13 to retract downwards and backwards from the support frame 1. The support shoe 13 is connected to the support leg 10 by a pin, allowing adjustment of the ground contact angle according to ground conditions. The design area of ​​the support shoe 13 is based on the overall weight of the machine to meet the gripping and support requirements of the cantilever tunneling machine.

[0020] A sliding cylinder 9 is located outside the movable seat at the bottom of the rear support frame 1. The tail end and piston end of the sliding cylinder 9 are hinged to the rear support frame 1 and the movable seat, respectively. In this embodiment, the piston end of the sliding cylinder 9 performs a telescopic movement, causing the movable seat to slide left and right within the slide rail at the bottom of the rear support frame 1, thereby achieving the effect of lateral adjustment of the cantilever tunneling machine's posture.

[0021] The slide rail 2 has a U-shaped cross-section, and a wear-resistant plate 3 is fixedly installed at the bottom of the rear support frame 1, with the wear-resistant plate 3 located between the two slide rails 2. In this embodiment, the bottom of the rear support frame 1 is protected by the wear-resistant plate 3, and the wear resistance of the wear-resistant plate 3 extends the service life of the rear support frame 1, thereby reducing maintenance frequency and downtime.

[0022] Limiting plates 4 are provided at the rear ends of the two slide rails 2. The movable seat includes a sliding plate 5 and a sliding seat 6 disposed at the bottom of the sliding plate 5. The sliding plate 5 is slidably disposed inside the slide track, with its two sides located within the two slide rails 2 respectively. In this embodiment, the limiting plates 4 are vertically fixed to the bottom of the rear support frame 1. The limiting plates 4 limit and block the sliding plate 5 inside the slide track, preventing it from sliding out of the slide track under the action of the sliding cylinder 9. The edge of the sliding plate 5 is slidably installed inside the slide rail 2, so that the piston end of the sliding cylinder 9 can drive the movable seat to slide left and right in the slide track, realizing the left and right sliding of the rear support frame 1 relative to the movable seat.

[0023] The upper end of the support leg 10 is hinged to the sliding seat 6, and the top of the support shoe 13 is provided with a lower hinge seat 14. The lower end of the support leg 10 is hinged to the lower hinge seat 14. In this embodiment, the upper end of the support leg 10 is hinged to the lower end of the sliding seat 6 by a pin, and the lower end of the support leg 10 is hinged to the lower hinge seat 14 by a pin, so that the support leg 10 can move under the action of the support cylinder 12.

[0024] The support cylinder 12 is inclinedly disposed above the support leg 10. An upper hinge seat 11 is fixedly disposed at the top of the lower end of the support leg 10. The piston end of the support cylinder 12 is hinged to the upper hinge seat 11. In this embodiment, the piston end of the support cylinder 12 is hinged to the upper hinge seat 11 via a pin, so that while the piston end of the support cylinder 12 is extending or retracting, it can simultaneously drive the support leg 10 to extend or retract.

[0025] The sliding seat 6 has symmetrically arranged side hinge seats 601 on both sides inside. The tail end of the support cylinder 12 is fixedly connected to an ear plate, which is hinged to the side hinge seats 601. In this embodiment, the ear plate is hinged to the side hinge seats 601 by a pin, so that the piston end of the support cylinder 12 can drive the support leg 10 to move.

[0026] A front hinge seat 8 is fixedly connected to the outer side of the sliding seat 6, and a rear hinge seat 7 is fixedly installed at the bottom of the rear support frame 1. The tail end and piston end of the sliding cylinder 9 are respectively hinged to the rear hinge seat 7 and the front hinge seat 8. In this embodiment, the tail end and piston end of the sliding cylinder 9 are respectively hinged to the rear hinge seat 7 and the front hinge seat 8 through pins. When the piston end of the sliding cylinder 9 performs a telescopic movement, it drives the sliding seat 6 to move left and right. The sliding seat 6 drives the sliding plate 5 to slide left and right in the slide rail at the bottom of the rear support frame 1.

[0027] The working principle of this utility model is as follows: When the cantilever tunneling machine is working, the sliding cylinder 9 is opened and controlled to make the moving seat located at the middle position of the bottom of the rear support frame 1. Then, the support cylinders 12 of the two support components are opened, and the piston ends of the two support cylinders 12 extend out, driving the support legs 10 to extend to the side, so that the support legs 10 and support shoes 13 on both sides extend to the side and touch the ground, thereby providing lateral support and bottom support for the cantilever tunneling machine and improving the stability of the cantilever tunneling machine during cutting operations.

[0028] When the working posture of the cantilever tunneling machine needs to be adjusted during the cutting operation, firstly, the support cylinders 12 of the two support components are opened. The piston ends of the two support cylinders 12 extend and drive the support legs 10 to extend to the side. The support boots 13 touch the ground and lift the tail of the cantilever tunneling machine. Then, the sliding cylinder 9 is opened and the piston end of the sliding cylinder 9 is controlled to extend and retract. The piston end of the sliding cylinder 9 drives the sliding seat 6 to move left and right. The sliding seat 6 drives the sliding plate 5 to slide left and right in the slide rail at the bottom of the rear support frame 1, so as to realize the left and right movement of the rear support frame 1 of the cantilever tunneling machine relative to the sliding seat and support components, thereby realizing the lateral adjustment of the posture of the cantilever tunneling machine.

[0029] The embodiments described above are merely preferred embodiments of the utility model and are not intended to limit the scope of the utility model. Therefore, all equivalent changes or modifications made to the technical solutions described in the scope of the utility model patent application should be included within the scope of the utility model patent application.

Claims

1. A laterally movable rear support device for a cantilever tunneling machine, comprising a rear support frame (1), characterized in that, The bottom of the rear support frame (1) is provided with two slide rails (2) facing each other, and the space between the two slide rails (2) forms a slide rail. A movable seat is slidably arranged in the slide rail. Both sides of the movable seat are provided with support components, which include support legs (10) and support cylinders (12). The upper end of the support leg (10) is hinged to the movable seat, and the lower end is hinged to a support shoe (13). The tail end and piston end of the support cylinder (12) are respectively hinged to the lower end of the movable seat and the support leg (10). Below the rear support frame (1) is a sliding cylinder (9) located outside the movable seat. The tail end and piston end of the sliding cylinder (9) are respectively hinged to the rear support frame (1) and the movable seat.

2. The laterally movable rear support device for a cantilever tunneling machine according to claim 1, characterized in that, The slide rail (2) has a U-shaped cross-section, and a wear-resistant plate (3) is fixedly installed at the bottom of the rear support frame (1). The wear-resistant plate (3) is located between the two slide rails (2).

3. The laterally movable rear support device for a cantilever tunneling machine according to claim 1, characterized in that, Limiting plates (4) are provided at the rear ends of the two slide rails (2). The movable seat includes a sliding plate (5) and a sliding seat (6) provided at the bottom of the sliding plate (5). The sliding plate (5) is slidably disposed inside the slide rail and its two sides are respectively located inside the two slide rails (2).

4. A laterally movable rear support device for a cantilever tunneling machine according to claim 3, characterized in that, The upper end of the support leg (10) is hinged to the sliding seat (6), and the top of the support shoe (13) is provided with a lower hinge seat (14), and the lower end of the support leg (10) is hinged to the lower hinge seat (14).

5. A laterally movable rear support device for a cantilever tunneling machine according to claim 4, characterized in that, The support cylinder (12) is inclined above the support leg (10), and the upper hinge seat (11) is fixedly installed at the top of the lower end of the support leg (10). The piston end of the support cylinder (12) is hinged to the upper hinge seat (11).

6. A laterally movable rear support device for a cantilever tunneling machine according to claim 5, characterized in that, The sliding seat (6) has symmetrically arranged side hinge seats (601) on both sides inside. The tail end of the support cylinder (12) is fixedly connected to an ear plate, which is hinged to the side hinge seat (601).

7. A laterally movable rear support device for a cantilever tunneling machine according to claim 3, characterized in that, The outer side of the sliding seat (6) is fixedly connected to the front hinge seat (8), and the bottom of the rear support frame (1) is fixedly provided with the rear hinge seat (7). The tail end and piston end of the sliding cylinder (9) are respectively hinged to the rear hinge seat (7) and the front hinge seat (8).

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