Rectangular self-moving temporary supporting device with self-adaptive inclination angle

Abstract

A self-adaptive dip angle rectangular self-moving temporary supporting device is composed of a frame top beam A, a frame top beam B, a plurality of stand columns used for lifting and a plurality of front beam jacks and is characterized in that the stand columns capable of stretching out and drawing back are arranged on the lower portion of the frame top beam A, the stand columns are arranged on the lower portion of the frame top beam B, and the frame top beam A and the frame top beam B are arranged in a staggered mode. A top beam of the frame A and a top beam of the frame B are respectively provided with a pushing jack, two sides of the top beam of the frame A and two sides of the top beam of the frame B are provided with frame adjusting jack boxes, frame adjusting jacks are installed in the frame adjusting jack boxes, the frame adjusting jacks are connected with frame adjusting seats through pin shafts, and the stand columns, the front beam jacks and the pushing jacks are connected with a hydraulic system. Compared with the prior art, the device can support an exposed top plate in time along with forward tunneling of the tunneling machine and automatically move forwards.

Description

Technical Field

[0001] The utility model relates to a temporary supporting device for a coal mine excavation working face, in particular to an adaptive inclination rectangular self-moving temporary supporting device. Background Art

[0002] As we all know, the safety problem of temporary support during tunneling is a long-standing technical problem that has plagued coal mine production. Since the roof is exposed after tunneling and cannot be supported in time, accidents of falling gangue from the roof often occur and injure people. The current solution to this technical problem is to use a temporary support device on the tunneling machine, but this solution has a small support area and cannot achieve full-section support. When laying nets and anchor support, the workers are still in the empty roof area. Therefore, designing an adaptive inclined rectangular self-moving temporary support device that can provide full-section support, has a large operating space and a high safety factor is a technical problem that needs to be solved at present. Summary of the invention

[0003] The technical problem to be solved by the utility model is to provide an adaptive inclined rectangular self-moving temporary support device which can provide full-section support, has a large working space and a high safety factor.

[0004] The technical solution of the utility model to solve the technical problem is:

[0005] The adaptive inclination rectangular self-moving temporary support device is composed of an A-frame top beam, a B-frame top beam, a plurality of columns for lifting and a plurality of front beam jacks, and is characterized in that a plurality of telescopic columns are arranged at the lower part of the A-frame top beam, a plurality of columns are arranged at the lower part of the B-frame top beam, the A-frame top beam and the B-frame top beam are arranged alternately, push jacks are respectively arranged on the A-frame top beam and the B-frame top beam, adjustment jack boxes are arranged on both sides of the A-frame top beam and the B-frame top beam, an adjustment jack is installed in the adjustment jack box, the adjustment jack is connected to the adjustment seat through a pin shaft, and the columns, the front beam jack and the push jack are connected to the hydraulic system.

[0006] As a preferred solution of the utility model, guard plates are hinged on both sides of the A-frame top beam through hinge shafts, and a guard plate jack is provided between the A-frame top beam and the guard plate, and the guard plate jack is connected to the hydraulic system.

[0007] As a preferred solution of the utility model, an A-frame front beam is hinged at the front part of the A-frame top beam, and a front beam jack for flipping the A-frame front beam is provided between the A-frame top beam and the A-frame front beam; a B-frame front beam is hinged at the front part of the B-frame top beam, and a front beam jack for flipping the B-frame front beam is provided between the B-frame top beam and the B-frame front beam.

[0008] As a preferred solution of the utility model, the A frame top beam is formed by connecting the cross beam I and the longitudinal beams I, III and V through a pin shaft, and the B frame top beam is formed by connecting the cross beam II, longitudinal beam II and IV through a pin shaft.

[0009] As a preferred solution of the utility model, the longitudinal beam III and the longitudinal beam V form a telescopic longitudinal beam through a telescopic jack, and the telescopic jack is connected to the hydraulic system.

[0010] As a preferred solution of the utility model, the A-frame type front beam is composed of a front beam and a longitudinal beam V, and the front end of the longitudinal beam V is connected to the front beam through a pin shaft.

[0011] As a preferred solution of the utility model, the frame adjustment jack box is divided into an A frame adjustment jack box and a B frame adjustment jack box, and the frame adjustment jack is also divided into an A frame adjustment jack and a B frame adjustment jack. The A frame adjustment jack box is arranged at both ends of the cross beam Ⅰ of the A frame top beam, and the B frame adjustment jack box is arranged at both ends of the cross beam Ⅱ of the B frame top beam. The A frame adjustment jack is arranged in the A frame adjustment jack box, and the B frame adjustment jack is arranged in the B frame adjustment jack box, and is connected to the frame adjustment seat through a pin shaft.

[0012] As a preferred embodiment of the utility model, the hydraulic system is composed of a pressure source and a control system. The pressure source is a hydraulic pump, which is connected to the control system through a safety valve. At the same time, the hydraulic source is connected to the adjustment jack, column, front beam jack, push jack, guard plate jack, front beam jack and telescopic jack through the control system. The control system is composed of a lateral valve group, a spherical stop valve, a two-way valve and a one-way valve.

[0013] Principle of the utility model:

[0014] The operator completes the permanent support behind the tunnel boring machine and under the support of the device. Specifically: the tunnel boring machine cuts coal and withdraws the machine; lays the net; moves the frame: ① Lowering the frame: operate the valve of the column of the A beam frame, the column is retracted, the height from the ground is about 400mm, and the A beam is lowered. ② Moving the frame: operate the left and right push jack valves, the piston rod extends, and pushes the A beam to move toward the coal wall, and the top net is automatically laid. ③ Raising the frame: operate the valve of the column of the A beam frame, the column rises, the A beam rises, and the beam supports the top plate. The column reaches the initial support force and ensures that it is vertical to the ground. ④ Lowering the frame: operate the valve of the column of the B beam frame, the column is retracted, the height from the ground is about 400mm, and the B beam is lowered. ⑤ Operate the left and right push jack valves, the piston rod extends, and pushes the B beam to move toward the coal wall. ⑥ Raising the frame: operate the valve of the column of the B beam frame, the column rises, the B beam rises, and the beam supports the top plate. The column reaches the initial support force and is guaranteed to be vertical to the ground. ⑦ The tunnel boring machine continues to advance, repeating the above steps every time it advances 1000mm. Retreat the tunnel boring machine; set up the working platform, anchor rods and anchor cables; inspect and accept, and proceed to the next cycle if qualified.

[0015] Compared with the prior art, the utility model can timely support the exposed top plate as the tunneling machine advances forward and move forward automatically. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 A front view of the structural schematic diagram of the utility model;

[0017] Figure 2 yes Figure 1 A top view of

[0018] Figure 3 yes Figure 1 Right view of;

[0019] Figure 4 It is a schematic diagram of the hydraulic principle of the utility model;

[0020] In the figure, 1 is cross beam I, 2 is longitudinal beam I, 3 is cross beam II, 4 is longitudinal beam II, 5 is longitudinal beam III, 6 is longitudinal beam IV, 7 is longitudinal beam V, 8 is front beam, 9 is guard plate, 10 is adjustment frame seat, 11 is column, 12 is push jack, 13 is front beam jack, 14 is guard plate jack, 15 is telescopic jack, 16 is adjustment frame jack, 311 is lateral valve group, 312 is spherical stop valve, 313 is two-way valve, 314 is one-way valve, 315 is safety valve, 316 is three-way, 317 is straight, 318 is elbow, 319 is plugging, and 320 is high-pressure hose. DETAILED DESCRIPTION

[0021] The adaptive inclination rectangular self-moving temporary support device is composed of an A-frame top beam, a B-frame top beam, a plurality of columns 11 for lifting and a plurality of front beam jacks 13. A plurality of retractable columns 11 are arranged at the lower part of the A-frame top beam, and a plurality of columns 11 are arranged at the lower part of the B-frame top beam. The A-frame top beam and the B-frame top beam are arranged alternately. Push jacks 12 are respectively arranged on the A-frame top beam and the B-frame top beam. Adjustment jack boxes are arranged on both sides of the A-frame top beam and the B-frame top beam. An adjustment jack 16 is installed in the adjustment jack box. The adjustment jack 16 is connected to the adjustment seat 10 through a pin shaft. The column 11, the front beam jack 13 and the push jack 12 are connected to the hydraulic system.

[0022] Guard plates 9 are hinged on both sides of the A-frame top beam through hinge shafts, and guard plate jacks 14 are arranged between the A-frame top beam and the guard plates 9 , and the guard plate jacks 14 are connected to the hydraulic system.

[0023] An A-frame front beam is hinged at the front of the A-frame top beam, and a front beam jack 13 for flipping the A-frame front beam is provided between the A-frame top beam and the A-frame front beam. A B-frame front beam is hinged at the front of the B-frame top beam, and a front beam jack 13 for flipping the B-frame front beam is provided between the B-frame top beam and the B-frame front beam.

[0024] The A frame top beam is formed by connecting the cross beam Ⅰ1 and the longitudinal beam Ⅰ2, the longitudinal beam Ⅲ5 and the longitudinal beam Ⅴ7 through a pin shaft, and the B frame top beam is formed by connecting the cross beam Ⅱ3, the longitudinal beam Ⅱ4 and the longitudinal beam Ⅳ6 through a pin shaft.

[0025] The longitudinal beam III5 and the longitudinal beam V7 form a telescopic longitudinal beam through the telescopic jack 15, and the telescopic jack 15 is connected to the hydraulic system.

[0026] The A-frame type front beam is composed of a front beam 8 and a longitudinal beam V7, and the front end of the longitudinal beam V7 is connected to the front beam 8 via a pin shaft.

[0027] The frame adjustment jack box is divided into an A frame adjustment jack box and a B frame adjustment jack box, and the frame adjustment jack 16 is also divided into an A frame adjustment jack and a B frame adjustment jack. The A frame adjustment jack box is arranged at both ends of the crossbeam Ⅰ1 of the A frame top beam, and the B frame adjustment jack box is arranged at both ends of the crossbeam Ⅱ3 of the B frame top beam. The A frame adjustment jack is arranged in the A frame adjustment jack box, and the B frame adjustment jack 16 is arranged in the B frame adjustment jack box and connected to the frame adjustment seat through a pin shaft.

[0028] The hydraulic system is composed of a pressure source and a control system. The pressure source is a hydraulic pump, which is connected to the control system through a safety valve 315. At the same time, the hydraulic source is connected to the adjustment jack 16, the column 11, the front beam jack 13, the push jack 12, the guard plate jack 14, the front beam jack 13 and the telescopic jack 15 through the control system. The control system is composed of a lateral valve group 311, a spherical stop valve 312, a two-way valve 313 and a one-way valve 314.

Claims

1. An adaptive inclination rectangular self-moving temporary support device, comprising an A frame top beam, a B frame top beam, a plurality of columns (11) for lifting and lowering, and a plurality of front beam jacks (13), characterized in that: A plurality of telescopic columns (11) are arranged at the bottom of the A frame top beam, a plurality of columns (11) are arranged at the bottom of the B frame top beam, the A frame top beam and the B frame top beam are arranged in a staggered manner, push jacks (12) are arranged on the A frame top beam and the B frame top beam respectively, a frame adjustment jack box is arranged on both sides of the A frame top beam and the B frame top beam, a frame adjustment jack (16) is installed in the frame adjustment jack box, the frame adjustment jack (16) is connected to the frame adjustment seat (10) through a pin shaft, and the columns (11), the front beam jack (13) and the push jack (12) are connected to a hydraulic system.

2. The adaptive inclined rectangular self-moving temporary support device according to claim 1 is characterized in that: Guard plates (9) are hingedly connected on both sides of the A-frame top beam via hinge shafts, and a guard plate jack (14) is provided between the A-frame top beam and the guard plate (9), and the guard plate jack (14) is connected to a hydraulic system.

3. The adaptive inclined rectangular self-moving temporary support device according to claim 2 is characterized in that: An A-frame front beam is hingedly connected to the front of the A-frame top beam, and a front beam jack (13) for flipping the A-frame front beam is provided between the A-frame top beam and the A-frame front beam; a B-frame front beam is hingedly connected to the front of the B-frame top beam, and a front beam jack (13) for flipping the B-frame front beam is provided between the B-frame top beam and the B-frame front beam.

4. The adaptive inclined rectangular self-moving temporary support device according to claim 3 is characterized in that: The A frame top beam is formed by connecting the cross beam I (1) and the longitudinal beam I (2), the longitudinal beam III (5) and the longitudinal beam V (7) through a pin shaft, and the B frame top beam is formed by connecting the cross beam II (3), the longitudinal beam II (4) and the longitudinal beam IV (6) through a pin shaft.

5. The adaptive inclined rectangular self-moving temporary support device according to claim 4 is characterized in that: The longitudinal beam III (5) and the longitudinal beam V (7) form a telescopic longitudinal beam through a telescopic jack (15), and the telescopic jack (15) is connected to the hydraulic system.

6. The adaptive inclined rectangular self-moving temporary support device according to claim 3 is characterized in that: The A-frame type front beam is composed of a front beam (8) and a longitudinal beam V (7), and the front end of the longitudinal beam V (7) is connected to the front beam (8) via a pin shaft.

7. The self-adaptive inclined rectangular self-moving temporary support device according to claim 1 is characterized in that: The frame adjustment jack box is divided into an A frame adjustment jack box and a B frame adjustment jack box. The frame adjustment jack (16) is also divided into an A frame adjustment jack and a B frame adjustment jack. The A frame adjustment jack box is arranged at both ends of the cross beam Ⅰ (1) of the A frame top beam, and the B frame adjustment jack box is arranged at both ends of the cross beam Ⅱ (3) of the B frame top beam. The A frame adjustment jack is arranged in the A frame adjustment jack box, and the B frame adjustment jack (16) is arranged in the B frame adjustment jack box and connected to the frame adjustment seat through a pin shaft.

8. The self-adaptive inclined rectangular self-moving temporary support device according to claim 1 is characterized in that: The hydraulic system is composed of a pressure source and a control system. The pressure source is a hydraulic pump, which is connected to the control system through a safety valve (315). At the same time, the hydraulic source is connected to the frame adjustment jack (16), the column (11), the front beam jack (13), the push jack (12), the guard plate jack (14), the front beam jack (13) and the telescopic jack (15) through the control system. The control system is composed of a lateral valve group (311), a spherical stop valve (312), a two-way valve (313) and a one-way valve (314).

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