Airborne temporary supporting device

Abstract

The utility model provides an onboard temporary supporting device which comprises a supporting frame and supporting columns, the number of the supporting columns is two, the supporting columns are arranged on the two sides of a cutting arm of a heading machine respectively and rotationally connected with the cutting arm, and the ends, away from the heading machine, of the two supporting columns are rotationally connected with the supporting frame through two connecting bases respectively. Buffering assemblies are arranged on the two sides of the top face of the supporting frame respectively, a displacement assembly capable of moving in the tunneling direction of the tunneling machine is arranged at the front end of the supporting frame, and overturning assemblies allowing the supporting columns and the supporting frame to be overturned are arranged on the two supporting columns. The device is easy to operate and good in supporting effect, the buffering effect can be effectively achieved when coal mine rockfall occurs, and the service life of the supporting device can be effectively prolonged.

Description

Technical Field

[0001] The utility model belongs to the technical field of coal mining, and in particular relates to an airborne temporary supporting device. Background Art

[0002] During coal mine tunnel operations, airborne temporary support devices typically provide temporary support, lifting anchor nets and steel belts to protect the roof and effectively prevent roof falls and casualties. However, the impact of falling rock in coal mines is significant, especially when it lands on either side of the support frame. This force causes the frame to sway significantly, easily deforming and damaging the existing temporary support and damaging the hydraulic mechanism that flips the support frame. This impact shortens the service life of the entire temporary support device, reducing the protective effect of the roadheader. Furthermore, existing support devices offer poor support effectiveness and are difficult to adjust.

[0003] In view of this, in order to solve the above problems, the utility model proposes an airborne temporary support device that can effectively play a buffering role when coal mine rockfall occurs and extend the service life of the support. The device effectively improves the support effect and is simple to operate. Summary of the Invention

[0004] The utility model provides an airborne temporary support device with simple operation and good support effect. It can effectively play a buffering role when rockfall occurs in coal mines and effectively extend the service life of the support device. The specific scheme is as follows:

[0005] A temporary airborne support device comprises a support frame and a support column, wherein the support columns are two and are respectively arranged on both sides of the cutting arm of the tunnel boring machine and are rotatably connected to the cutting arm. The two support columns are rotatably connected to the support frame through two connecting seats at one end facing away from the tunnel boring machine. Buffer assemblies are respectively provided on both sides of the top surface of the support frame, and a displacement assembly that can be moved toward the tunneling direction of the tunnel boring machine is provided at the front end of the support frame. A flipping assembly is provided on the two support columns for flipping the support columns and the support frame.

[0006] Furthermore, the buffer assembly includes a buffer frame and a buffer spring. The buffer frame is arranged on one side of the top of the support frame and is rotatably connected to the support frame through an axle pin. There are multiple buffer springs and they are arranged at intervals between the buffer frame and the support frame.

[0007] Furthermore, the displacement assembly includes a connecting frame and two first hydraulic cylinders. The two beams at the front end of the support frame are hollow structures. First hydraulic cylinders are respectively provided in the beams of the two hollow structures. The output ends of the two first hydraulic cylinders are respectively connected to the two connecting rods at the rear end of the connecting frame, and the two first hydraulic cylinders are respectively connected to the control valves.

[0008] Furthermore, the flipping assembly includes a second hydraulic cylinder, a third hydraulic cylinder and a support. There are two supports and they are respectively arranged on the side walls on the front sides of the two support columns. The support frames on the front sides of the two connecting seats are respectively connected with U-shaped mounting blocks. The two U-shaped mounting blocks are rotatably connected to the support frames. The second hydraulic cylinders are respectively rotatably connected between the supports and the U-shaped mounting blocks on both sides. The third hydraulic cylinders are respectively rotatably connected between the lower parts of the two support columns and the rear side walls on both sides of the tunneling machine. The second hydraulic cylinder and the third hydraulic cylinder are respectively connected to the control valves.

[0009] Furthermore, a plurality of arched protective rods are provided at intervals on the top of the support frame.

[0010] The beneficial effects of the utility model are:

[0011] The utility model provides an airborne temporary support device, which can buffer the rockfall on the top of the support frame by rotating the buffer frames and the multiple buffer springs between the buffer frames and the support frames. When rockfall occurs on the top of the tunnel, the buffer frames and the buffer springs can play a buffering role. This not only effectively reduces the protection of the support frame by the rockfall and avoids deformation, but also reduces the oil pressure part connected to it, plays a protective role, and extends the service life of the support device. The lifting and flipping of the device can be completed by directly operating the control valve, which makes the operation extremely simple and effectively improves the work efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] Figure 1 It is a structural diagram of the present utility model.

[0013] Figure 2 This is a schematic diagram of the layout structure of the utility model.

[0014] Figure 3 This is a schematic diagram of the disassembly of the present utility model.

[0015] Explanation of the accompanying drawings: support frame 1, crossbeam 101, support column 2, tunnel boring machine 3, buffer assembly 4, buffer frame 401, buffer spring 402, displacement assembly 5, connecting frame 501, first hydraulic cylinder 502, flipping assembly 6, second hydraulic cylinder 601, third hydraulic cylinder 602, support 603, U-shaped mounting block 604, connecting seat 7, protective rod 8. DETAILED DESCRIPTION

[0016] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments.

[0017] See Figure 1-3The support column 2 is connected to the cutting arm of the tunnel boring machine 3 and is rotatably connected to the cutting arm of the tunnel boring machine 3, wherein the support column 2 is rotatably connected to the cutting arm of the tunnel boring machine 3 by an axle pin, so that the support column 2 can be tilted along the front and rear directions of the tunnel boring machine 3. The two support columns 2 are rotatably connected to the support frame 1 at one end away from the tunnel boring machine 3 by two connecting seats 7, wherein the connecting seat 7 is provided with an axle pin, and the end of the support column 2 is horizontally opened with an axle pin hole, so that the support frame 1 can be rotated up and down along the support seat 2. Buffer components 4 are respectively provided on both sides of the top surface of the support frame 1, which can effectively buffer falling rocks in the coal mine, play a role in protecting the support frame 1 and prolonging its service life. A displacement component 5 is provided at the front end of the support frame 1 which can move toward the excavation direction of the tunnel boring machine 3, and a tilting component 6 is provided on the two support columns 2 for tilting the support column 2 and the support frame 1, so that the support frame 1 and the support column 2 can be tilted to adjust the height and angle.

[0018] The buffer assembly 4 includes a buffer frame 401 and a buffer spring 402. The buffer frame 401 is arranged on one side of the top of the support frame 1, and the buffer frame 401 is rotatably connected to the support frame 1 through an axle pin, wherein a plurality of grooves are spaced apart on both sides of the support frame 1, and blind holes suitable for the rotation of the axle pin are provided on the two side walls of the groove. The axle pin is arranged between the two blind holes, so that the other end of the buffer frame 401 can rotate up and down along the support frame 1. There are multiple buffer springs 402 and they are spaced apart between the buffer frame 401 and the support frame 1. When falling rocks occur and fall onto the buffer frames 401 on both sides of the support frame 1, a certain buffering force can be formed by the buffer springs 402 to relieve the impact force of the falling rocks, thereby effectively protecting the support frame 1, greatly reducing the force of its left and right swinging, and effectively avoiding deformation of the support frame 1.

[0019] The displacement assembly 5 includes a connecting frame 501 and two first hydraulic cylinders 502. The two beams 101 at the front end of the support frame 1 are hollow structures. The first hydraulic cylinders 502 are respectively provided in the beams 101 of the two hollow structures. The output ends of the two first hydraulic cylinders 502 are respectively connected to the two connecting rods at the rear end of the connecting frame 501. The two first hydraulic cylinders 502 are respectively connected to the control valves, wherein the two connecting rods at the rear end of the connecting frame 501 are respectively placed in the hollow structures of the beams 101. When the first hydraulic cylinders 502 are working, the two connecting rods are also placed in the hollow structure during the displacement of the connecting frame 501. The setting of the displacement assembly 5 facilitates providing a larger support area for the support frame 1 to protect safety.

[0020] The flip assembly 6 includes a second hydraulic cylinder 601, a third hydraulic cylinder 602 and a support 603. There are two supports 603 and they are respectively arranged on the side walls of the front sides of the two support columns 2. The supports 603 are connected to the side walls of the support columns 2 by welding. The support frames 1 on the front sides of the two connecting seats 7 are respectively connected with U-shaped mounting blocks 604. The two U-shaped mounting blocks 604 are rotatably connected to the support frames 1 and are rotatably connected through axle pins. The second hydraulic cylinder 601 is rotatably connected between the supports 603 and the U-shaped mounting blocks 604 on both sides, wherein the second hydraulic cylinder 601 is used to rotate the support frame 1 up and down along the support column 2 to adjust To achieve the required angle, third hydraulic cylinders 602 are rotatably connected between the lower parts of the two support columns 2 and the rear side walls on both sides of the tunnel boring machine 3, wherein the lower parts of the support columns 2 are connected with two axle pins horizontally spaced along their height direction, and two third hydraulic cylinders 602 are rotatably connected to the tunnel boring machine 3 on the rear side of the support columns 2 through the two axle pins, and the output ends of the two third hydraulic cylinders 602 are rotatably connected to the two axle pins on the support columns 2, so that the support columns 2 can be controlled by the third hydraulic cylinders 602 on both sides of the tunnel boring machine 3 to complete the front and rear flipping to adjust to the required height, and the second hydraulic cylinder 601 and the third hydraulic cylinder 602 are respectively connected to the control valve.

[0021] A plurality of arched protection rods 8 are provided at intervals on the top of the support frame 1 , and the arched protection rods 8 can be provided so that when rocks fall, they can roll along the arched protection rods to the sides of the support frame 1 .

[0022] The working principle of the present invention is as follows: first determine the required height and angle of the support frame 1, and then operate the control valve to simultaneously control the operation of the second hydraulic cylinder 601 and the third hydraulic cylinder 602, wherein the third hydraulic cylinder 602 controls the two support columns 2 to flip forward or backward to achieve the adjustment of the height of the support column 2, and the second hydraulic cylinder 601 controls the support frame 1 to flip up and down to adjust the flipping angle of the support frame 1, and then control the first hydraulic cylinder 502 according to the actual situation to make the connecting frame 501 move forward or forward and backward to achieve the adjustment of the support range of the auxiliary support frame 1. When falling rocks occur at the top of the tunnel, especially when they fall directly onto the buffer frames 401 on both sides, the multiple buffer springs 402 set up can achieve a certain buffering force for the falling rocks, reduce the amplitude of the left and right shaking of the support frame 1, thereby reducing the risk of deformation of the support frame 1 and damage to each hydraulic cylinder.

[0023] It will be apparent to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above and that the invention can be embodied in other specific forms without departing from the spirit or essential characteristics of the invention. Therefore, the embodiments should be considered in all respects as illustrative and non-restrictive, and the scope of the invention is defined by the appended claims rather than the foregoing description. It is intended that all variations within the meaning and range of equivalents of the claims be embraced herein, and any reference signs in the claims should not be construed as limiting the claims to which they relate.

[0024] In addition, it should be understood that although this specification is described in terms of implementation methods, not every implementation method contains only one independent technical solution. This narrative method of the specification is only for the sake of clarity. Those skilled in the art should regard the specification as a whole. The technical solutions in each embodiment can also be appropriately combined to form other implementation methods that can be understood by those skilled in the art.

Claims

1. An airborne temporary support device, characterized in that: The invention comprises a support frame (1) and a support column (2), wherein the support columns (2) are two and are respectively arranged on both sides of the cutting arm of the tunnel boring machine (3) and are rotatably connected to the cutting arm. The ends of the two support columns (2) facing away from the tunnel boring machine (3) are rotatably connected to the support frame (1) through two connecting seats (7). Buffer components (4) are respectively provided on both sides of the top surface of the support frame (1). A displacement component (5) that can move toward the tunneling direction of the tunnel boring machine (3) is provided at the front end of the support frame (1). A flip component (6) that can flip the support column (2) and the support frame (1) is provided on the two support columns (2).

2. The airborne temporary support device according to claim 1, characterized in that: The buffer assembly (4) comprises a buffer frame (401) and a buffer spring (402); the buffer frame (401) is arranged on one side of the top of the support frame (1), and the buffer frame (401) is rotatably connected to the support frame (1) via an axle pin; the buffer spring (402) is in plurality and is arranged at intervals between the buffer frame (401) and the support frame (1).

3. The airborne temporary support device according to claim 1, characterized in that: The displacement assembly (5) comprises a connecting frame (501) and two first hydraulic cylinders (502); the two crossbeams (101) at the front end of the support frame (1) are respectively hollow structures; the first hydraulic cylinders (502) are respectively arranged in the crossbeams (101) of the two hollow structures; the output ends of the two first hydraulic cylinders (502) are respectively connected to the two connecting rods at the rear end of the connecting frame (501); and the two first hydraulic cylinders (502) are respectively connected to the control valve.

4. The airborne temporary support device according to claim 1, characterized in that: The tilting assembly (6) comprises a second hydraulic cylinder (601), a third hydraulic cylinder (602) and a support (603), wherein the support (603) is two and is respectively arranged on the side walls on the front sides of the two support columns (2), and a U-shaped mounting block (604) is respectively connected to the support frame (1) on the front side of the two connecting seats (7), and the two U-shaped mounting blocks (604) are rotatably connected to the support frame (1), and the second hydraulic cylinder (601) is respectively rotatably connected between the support (603) and the U-shaped mounting block (604) on both sides, and the third hydraulic cylinder (602) is respectively rotatably connected between the lower parts of the two support columns (2) and the rear side walls on both sides of the tunnel boring machine (3), and the second hydraulic cylinder (601) and the third hydraulic cylinder (602) are respectively connected to the control valve.

5. The airborne temporary support device according to claim 1, characterized in that: A plurality of arched protection rods (8) are provided at intervals on the top of the support frame (1).

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