Cutting arm convenient to steer and heading machine

Abstract

The utility model discloses a cutting arm convenient to steer and a heading machine, and relates to the heading machine field, the cutting arm convenient to steer comprises a bearing seat, a steering assembly and a displacement assembly, an installation cylinder is fixed above the bearing seat, the steering assembly is installed in the installation cylinder, a rocker arm seat is installed above the steering assembly, one side of the rocker arm seat is fixedly provided with a connecting seat, and the other side of the connecting seat is fixedly provided with a connecting rod. A first-stage large rocker arm is installed on one side of the connecting base, a displacement assembly is installed on the lower portion of the inner side of the first-stage large rocker arm and comprises a moving base, a limiting sliding groove, a limiting sliding block and a hydraulic push rod, and the limiting sliding block is fixed to the position, close to the limiting sliding groove, of the inner side of the first-stage large rocker arm. According to the cutting arm convenient to steer and the heading machine, the steering assembly can conveniently drive the rocker arm base, the connecting base and the first-stage large rocker arm on the upper side of the steering assembly to steer stably, the displacement assembly can make the moving base move stably, then the second-stage small rocker arm can be driven to move, the heading range of the heading machine is adjustable, and functionality is better.

Description

Technical Field

[0001] The utility model relates to the field of tunneling machines, in particular to a cutting arm and a tunneling machine which are easy to turn. Background Art

[0002] The roadheader is a machine used to dig tunnels on flat ground. It is mainly composed of a traveling mechanism, a working mechanism, a loading mechanism and a transfer mechanism. As the traveling mechanism moves forward, the cutting head in the working mechanism continuously breaks up the rocks and transports the broken rocks away. It has the advantages of safety, high efficiency and good tunnel quality. The cutting arm is an important part of the roadheader.

[0003] However, the current cutting arm still has some shortcomings. For example, the existing cutting arm is limited by the overall structure, so that the length and position of the rocker arm cannot be increased or moved and adjusted, which further limits the operating range and is not conducive to efficient operation.

[0004] Therefore, it is urgent to improve this shortcoming. The utility model studies and improves the existing structural deficiencies and provides a cutting arm and a tunneling machine that are easy to turn. Utility Model Content

[0005] The utility model aims to provide a cutting arm and a tunneling machine which are easy to turn, so as to solve the problems raised in the above-mentioned background technology.

[0006] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a cutting arm and tunneling machine that are easy to turn, including a bearing seat, a steering assembly and a displacement assembly, a mounting cylinder is fixed on the top of the bearing seat, and a steering assembly is installed inside the mounting cylinder, a rocker arm seat is installed above the steering assembly, and a connecting seat is fixed on one side of the rocker arm seat, a first-level large rocker arm is installed on one side of the connecting seat, and a displacement assembly is installed on the inner lower side of the first-level large rocker arm, the displacement assembly includes a moving seat, a limiting slide groove, a limiting slider and a hydraulic push rod, limiting slide grooves are provided on both sides of the moving seat, a limiting slider is fixed on the inner side of the first-level large rocker arm near the limiting slide groove, a hydraulic push rod is installed between the connecting seat and the moving seat, a second-level small rocker arm is arranged on the front side of the moving seat through a rotating shaft, and a cutting head is installed on the top of the second-level small rocker arm.

[0007] Furthermore, the steering assembly includes a shock-absorbing base pad, a drive motor, a steering shaft and a top plate, the shock-absorbing base pad is bonded to the inner bottom surface of the mounting tube, and the drive motor is installed on the upper side of the shock-absorbing base pad, the steering shaft is arranged on the upper side of the drive motor, and the top plate is fixed to the top end of the steering shaft.

[0008] Furthermore, the steering assembly also includes a connecting bearing and a bearing cover shell. The outer side of the top plate is rotatably connected to the mounting cylinder via the connecting bearing, and a bearing cover shell is arranged above the top plate and the mounting cylinder. The bearing cover shell is fixedly connected to the top plate, and the bearing cover shell is rotatably connected to the mounting cylinder.

[0009] Furthermore, the limiting sliding groove of the movable seat is slidably connected to the limiting sliding block, and the rear side of the movable seat is fixedly connected to the hydraulic push rod.

[0010] Furthermore, a fixing plate is fixed below the connecting seat, and a pushing cylinder is rotatably installed on one side of the fixing plate close to the secondary small rocker arm, and the front end of the pushing cylinder is connected to the rotating shaft of the secondary small rocker arm.

[0011] A tunneling machine is provided with the cutting arm which is convenient for steering as described above.

[0012] The utility model provides a cutting arm and a tunneling machine that are easy to turn, and has the following beneficial effects:

[0013] 1. The utility model is provided with a steering assembly, which is convenient for driving the steering of the top plate by driving the motor and the steering shaft. The outer side of the top plate is rotatably connected to the mounting cylinder through a connecting bearing so that it rotates smoothly, thereby being able to drive the rotation of the bearing cover shell. The mounting cylinder is used to carry the bearing cover shell in rotation, so that the bearing cover shell can bear the force, so as to drive the steering of the upper rocker arm seat, the connecting seat, and the first-level large rocker arm.

[0014] 2. The utility model is provided with a displacement component, which facilitates telescopic pushing of the position of the moving seat through a hydraulic push rod. The sliding cooperation between the limit slide groove of the moving seat and the limit slider makes the moving seat move smoothly, thereby driving the movement of the secondary small rocker arm, so that the excavation range of the tunnel boring machine is adjustable and the functionality is better. The cutting head at the top of the secondary small rocker arm is used for cutting operations. The angle of the secondary small rocker arm can be adjusted by pushing the oil cylinder, and it is more flexible to use. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 This is a front structural schematic diagram of a cutting arm and a tunnel boring machine that are easy to turn according to the utility model;

[0016] Figure 2 This is a schematic diagram of the structure of a cutting arm and a steering assembly of a tunnel boring machine that are easy to turn according to the utility model;

[0017] Figure 3 This is a schematic diagram of the displacement assembly structure of a cutting arm and a tunnel boring machine that are easy to turn according to the utility model;

[0018] Figure 4 The utility model is a schematic diagram of the rear view structure of a cutting arm and a tunnel boring machine which are easy to turn.

[0019] In the figure: 1. bearing seat; 2. mounting cylinder; 3. steering assembly; 301. shock-absorbing base pad; 302. driving motor; 303. steering shaft; 304. top plate; 305. connecting bearing; 306. bearing cover; 4. rocker arm seat; 5. connecting seat; 6. primary large rocker arm; 7. displacement assembly; 701. moving seat; 702. limiting slide groove; 703. limiting slide block; 704. hydraulic push rod; 8. rotating shaft; 9. secondary small rocker arm; 10. cutting head; 11. fixing plate; 12. pushing cylinder. DETAILED DESCRIPTION

[0020] The following is a further detailed description of the implementation of the present invention in conjunction with the accompanying drawings and examples. The following examples are used to illustrate the present invention, but cannot be used to limit the scope of the present invention.

[0021] like Figure 1 , Figure 2 As shown, a cutting arm and a tunneling machine that are easy to turn, include a bearing seat 1, a steering assembly 3 and a displacement assembly 7, a mounting tube 2 is fixed above the bearing seat 1, and a steering assembly 3 is installed inside the mounting tube 2, the steering assembly 3 includes a shock-absorbing base pad 301, a drive motor 302, a steering shaft 303 and a top plate 304, the shock-absorbing base pad 301 is bonded to the inner bottom surface of the mounting tube 2, and a drive motor 302 is installed on the upper side of the shock-absorbing base pad 301, a steering shaft 303 is arranged on the upper side of the drive motor 302, and a top plate 304 is fixed to the top of the steering shaft 303; the steering assembly 3 also includes a connecting bearing 305 and a bearing cover shell 306, and the outer side of the top plate 304 is connected by a connecting The connecting bearing 305 is rotatably connected to the mounting tube 2, and a bearing cover shell 306 is arranged above the top plate 304 and the mounting tube 2, the bearing cover shell 306 is fixedly connected to the top plate 304, and the bearing cover shell 306 is rotatably connected to the mounting tube 2; the top plate 304 is conveniently driven to turn by driving the motor 302 and the steering shaft 303, the outer side of the top plate 304 is rotatably connected to the mounting tube 2 through the connecting bearing 305 so that its rotation is stable, thereby being able to drive the bearing cover shell 306 to rotate, and the mounting tube 2 is used for rotatably bearing the bearing cover shell 306, so that the bearing cover shell 306 can bear the force, so as to drive the upper rocker arm seat 4, the connecting seat 5, and the first-stage large rocker arm 6 to turn.

[0022] like Figure 1 , Figure 3As shown, a rocker arm seat 4 is installed above the steering assembly 3, and a connecting seat 5 is fixed on one side of the rocker arm seat 4, a first-level large rocker arm 6 is installed on one side of the connecting seat 5, and a displacement assembly 7 is installed on the inner and lower side of the first-level large rocker arm 6, and the displacement assembly 7 includes a moving seat 701, a limiting slide groove 702, a limiting slider 703 and a hydraulic push rod 704, and the moving seat 701 is provided with a limiting slide groove 702 on both sides, and the limiting slider 703 is fixed on the inner side of the first-level large rocker arm 6 near the limiting slide groove 702. A hydraulic push rod 704 is installed between the moving seats 701, the limiting slide groove 702 of the moving seat 701 is slidably connected with the limiting slider 703, and the rear side of the moving seat 701 is fixedly connected with the hydraulic push rod 704; the hydraulic push rod 704 is used to facilitate telescopic pushing of the position of the moving seat 701, and the sliding cooperation between the limiting slide groove 702 of the moving seat 701 and the limiting slider 703 makes the moving seat 701 move smoothly, thereby being able to drive the movement of the secondary small rocker arm 9, so that the excavation range of the tunnel boring machine is adjustable and the functionality is better.

[0023] like Figure 1 , Figure 4 As shown, a secondary small rocker arm 9 is rotatably provided on the front side of the movable seat 701 through the rotating shaft 8, and a cutting head 10 is installed on the top of the secondary small rocker arm 9; a fixed plate 11 is fixed under the connecting seat 5, and a pushing cylinder 12 is rotatably installed on the side of the fixed plate 11 close to the secondary small rocker arm 9, and the front end of the pushing cylinder 12 is connected to the rotating shaft 8 of the secondary small rocker arm 9; the cutting head 10 at the top of the secondary small rocker arm 9 is used for cutting operations, and the angle of the secondary small rocker arm 9 is conveniently adjusted by pushing the cylinder 12, which is more flexible to use.

[0024] A tunnel boring machine is provided with a cutting arm as described above which is easy to turn. The bearing seat 1 of the cutting arm is installed at a corresponding position of the tunnel boring machine. The first-stage large rocker arm 6, the second-stage small rocker arm 9 and the cutting head 10 of the cutting arm can be operated to perform tunneling operations. The steering of the cutting arm can also be controlled by the steering assembly 3.

[0025] In summary, the cutting arm and tunnel boring machine that are easy to turn are first based on Figures 1 to 4The structure shown in the figure is to install the bearing seat 1 of the cutting arm at the corresponding position of the tunnel boring machine. During use, the position of the moving seat 701 can be pushed by the hydraulic push rod 704. The sliding cooperation between the limiting slide groove 702 of the moving seat 701 and the limiting slider 703 makes the moving seat 701 move smoothly, thereby driving the movement of the secondary small rocker arm 9, so that the tunneling range of the tunnel boring machine can be adjusted, and then the cutting head 10 at the top of the secondary small rocker arm 9 can perform cutting operations. In this process, the angle of the secondary small rocker arm 9 can be adjusted by pushing the oil cylinder 12, and the steering of the top plate 304 can be driven by the driving motor 302 and the steering shaft 303. The outer side of the top plate 304 is rotatably connected to the mounting cylinder 2 through the connecting bearing 305 to make it rotate smoothly, thereby driving the rotation of the bearing cover shell 306. The mounting cylinder 2 is used to rotate and bear the bearing cover shell 306, so that the bearing cover shell 306 can bear the force, thereby driving the steering of the upper rocker arm seat 4, the connecting seat 5, and the primary large rocker arm 6.

[0026] The embodiments of the present invention are provided for the purpose of illustration and description, and are not intended to be exhaustive or to limit the present invention to the disclosed forms. Many modifications and variations will be apparent to those of ordinary skill in the art. The embodiments are selected and described to better illustrate the principles and practical applications of the present invention, and to enable those of ordinary skill in the art to understand the present invention and thereby design various embodiments with various modifications suitable for specific uses.

Claims

1. A cutting arm that is easy to turn, comprising a bearing seat (1), a turning assembly (3) and a displacement assembly (7), characterized in that: A mounting cylinder (2) is fixed above the bearing seat (1), and a steering assembly (3) is installed inside the mounting cylinder (2), a rocker seat (4) is installed above the steering assembly (3), and a connecting seat (5) is fixed on one side of the rocker seat (4), a primary large rocker arm (6) is installed on one side of the connecting seat (5), and a displacement assembly (7) is installed on the lower inner side of the primary large rocker arm (6), and the displacement assembly (7) comprises a moving seat (701), a limiting slide groove (702), and a limiting slider (703). 3) and a hydraulic push rod (704), both sides of the movable seat (701) are provided with limit slide grooves (702), the inner side of the primary large rocker arm (6) is fixed with a limit slide block (703) near the limit slide groove (702), a hydraulic push rod (704) is installed between the connecting seat (5) and the movable seat (701), a secondary small rocker arm (9) is rotatably arranged on the front side of the movable seat (701) through a rotating shaft (8), and a cutting head (10) is installed at the top end of the secondary small rocker arm (9).

2. A cutting arm that is easy to turn according to claim 1, characterized in that: The steering assembly (3) comprises a shock-absorbing base pad (301), a drive motor (302), a steering shaft (303) and a top plate (304); the shock-absorbing base pad (301) is bonded to the inner bottom surface of the mounting tube (2), and the drive motor (302) is installed on the upper side of the shock-absorbing base pad (301); the steering shaft (303) is arranged on the upper side of the drive motor (302), and the top plate (304) is fixed to the top end of the steering shaft (303).

3. A cutting arm that is easy to turn according to claim 2, characterized in that: The steering assembly (3) further comprises a connecting bearing (305) and a bearing cover (306); the outer side of the top plate (304) is rotatably connected to the mounting cylinder (2) via the connecting bearing (305); a bearing cover (306) is disposed above the top plate (304) and the mounting cylinder (2); the bearing cover (306) is fixedly connected to the top plate (304), and the bearing cover (306) is rotatably connected to the mounting cylinder (2).

4. A cutting arm that is easy to turn according to claim 1, characterized in that: The limiting sliding groove (702) of the movable seat (701) is slidably connected to the limiting sliding block (703), and the rear side of the movable seat (701) is fixedly connected to the hydraulic push rod (704).

5. A cutting arm that is easy to turn according to claim 1, characterized in that: A fixing plate (11) is fixed below the connecting seat (5), and a pushing oil cylinder (12) is rotatably mounted on one side of the fixing plate (11) close to the secondary small rocker arm (9), and the front end of the pushing oil cylinder (12) is connected to the rotating shaft (8) of the secondary small rocker arm (9).

6. A tunnel boring machine, characterized in that: The tunnel boring machine is equipped with a cutting arm that is easy to steer as described in any one of claims 1-5.

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