Roadway tunneling supporting hydraulic support

Abstract

The utility model relates to a roadway tunneling supporting hydraulic support which comprises a support body A, a support body B and a support moving jack for driving the support body A and the support body B to relatively move front and back, and the support body A comprises a plurality of parallel beams A and a plurality of cross beams A fixedly connected to the lower ends of the parallel beams A; the frame body B comprises a plurality of side-by-side parallel beams B and a plurality of cross beams B fixedly connected to the lower ends of the parallel beams B, the lower ends of the cross beams A and the lower ends of the cross beams B are fixedly connected with telescopic stand columns, the parallel beams A and the parallel beams B are arranged in parallel, the front ends of the parallel beams A are hinged to overturning beams A swinging up and down, and the front ends of the parallel beams B are hinged to overturning beams B swinging up and down; and overturning jacks are connected between the forward beam A and the overturning beam A as well as between the forward beam B and the overturning beam B. The front end of the roadway is supported through the overturning beam A and the overturning beam B which are arranged at the foremost end of the roadway, and the overturning beam A and the overturning beam B can swing up and down to be adjusted, so that conditions such as the height of the roadway at the front end of the roadway are adapted, and the supporting effect is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of tunnel support, and specifically refers to a hydraulic support for tunnel excavation support. Background Art

[0002] Tunnel excavation support hydraulic supports are used for temporary support of the tunneling head of the comprehensive excavation working face. For example, the utility model with the announcement number CN201137499Y discloses a new type of tunnel excavation advance support support, and the utility model with the announcement number CN204152534U discloses a tunneling support, both of which can realize temporary support at the end of the tunnel and can be moved as the tunnel is excavated.

[0003] However, the front end of the current tunneling support hydraulic support has insufficient support effect on the tunneling position and cannot achieve effective and safe support effect. Utility Model Content

[0004] The utility model aims at the deficiencies of the prior art and provides a tunnel excavation support hydraulic bracket.

[0005] The utility model is realized through the following technical scheme, and provides a tunnel excavation support hydraulic support, including a frame A and a frame B and a frame shifting jack driving the frame A and the frame B to move relative to each other front and back, the frame A includes a plurality of side-by-side longitudinal beams A and a plurality of cross beams A fixedly connected to the lower ends of the longitudinal beams A, the frame B includes a plurality of side-by-side longitudinal beams B and a plurality of cross beams B fixedly connected to the lower ends of the longitudinal beams B, the lower ends of the cross beams A and the lower ends of the cross beams B are both fixedly connected with telescopic columns, the longitudinal beams A and the longitudinal beams B are arranged in parallel, the front end of the longitudinal beam A is hinged with a flip beam A that swings up and down, and the front end of the longitudinal beam B is hinged with a flip beam B that swings up and down.

[0006] In this scheme, the entire hydraulic support frame moving operation is achieved by the relative forward and backward movement of frame A and frame B, and support is achieved by the contact between longitudinal beams A and longitudinal beams B and the top surface of the tunnel. Flip beams A and flip beams B are located at the front end of the tunnel to support the front end of the tunnel. Flip beams A and flip beams B can be swung up and down to adjust, thereby adapting to conditions such as the tunnel height at the front end of the tunnel.

[0007] As an optimization, a flip jack is connected between the longitudinal beam A and the flip beam A, and between the longitudinal beam B and the flip beam B. In this solution, the up and down swing adjustment of the flip beam A and the flip beam B is achieved by the flip jack.

[0008] As an optimization, the upper end surface of the flip beam A and the upper end surface of the flip beam B are both fixedly connected with a side guard plate. The side guard plate in this solution increases the support area of ​​the front end of the tunnel, prevents falling rocks, and improves the support effect.

[0009] As an optimization, both ends of the beam A and the beam B are equipped with side push jacks, and the telescopic shafts of the side push jacks are equipped with side push seats. The side push jacks in this solution push the side push seats against the side of the roadway to achieve stable support of the entire hydraulic support.

[0010] As an optimization, two cross beams A and two cross beams B are provided and are staggered.

[0011] As an optimization, four longitudinal beams A and four longitudinal beams B are provided respectively and are arranged in a staggered manner.

[0012] As an optimization, one end of the frame shifting jack is hinged to the beam A, and the other end is hinged to the beam B. Two frame shifting jacks are provided and arranged side by side. In this solution, two frame shifting jacks can realize the left and right movements of the frame A and the frame B being consistent when they move relative to each other.

[0013] The beneficial effects of the utility model are as follows: a tunnel excavation support hydraulic support of the utility model has a flip beam A that swings up and down hinged at the front end of the longitudinal beam A, and a flip beam B that swings up and down hinged at the front end of the longitudinal beam B. By locating the flip beam A and the flip beam B at the very front end of the tunnel, the front end of the tunnel is supported. Since the flip beam A and the flip beam B can be swung up and down to adjust, they can adapt to conditions such as the tunnel height at the front end of the tunnel. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 This is the front view of the utility model;

[0015] Figure 2 It is a side view of the utility model;

[0016] Figure 3 It is a top view of the utility model;

[0017] Figure 4 It is a cross-sectional schematic diagram of the cross beam A and the cross beam B of the utility model;

[0018] Figure 5 It is a cross-sectional schematic diagram of the longitudinal beam A and the longitudinal beam B of the utility model;

[0019] As shown in the figure:

[0020] 1. First crossbeam, 2. Second crossbeam, 3. Third crossbeam, 4. Fourth crossbeam, 5. Longitudinal beam A, 6. Longitudinal beam B, 7. Side push seat, 8. Flip beam A, 9. Flip beam B, 10. Telescopic column, 11. Frame transfer jack, 12. Side push jack, 13. Flip jack, 14. Guard plate. DETAILED DESCRIPTION

[0021] In order to clearly illustrate the technical features of this solution, this solution is described below through a specific implementation method.

[0022] like Figures 1 to 5 As shown, a tunnel excavation support hydraulic support of the utility model includes a frame A and a frame B and a frame moving jack 11 for driving the frame A and the frame B to move relative to each other forward and backward.

[0023] The frame A includes a plurality of side-by-side longitudinal beams A5 and a plurality of cross beams A fixedly connected to the lower end of the longitudinal beams A5; the frame B includes a plurality of side-by-side longitudinal beams B6 and a plurality of cross beams B fixedly connected to the lower end of the longitudinal beams B6; the longitudinal beams A5 and the longitudinal beams B6 are arranged in parallel and both extend along the front-to-back direction of the lane; the cross beams A and the cross beams B are arranged in parallel and both extend along the left-to-right direction of the lane.

[0024] like Figure 5 As shown, in this embodiment, the longitudinal beam A5 and the longitudinal beam B6 adopt a box-shaped deformed section structure welded by high-strength steel plates.

[0025] The bending moment and torque borne by beams A and B are large and the working conditions are bad, so the beams must have sufficient strength and rigidity. Figure 4 As shown, the cross beam A and the cross beam B of the device are integral box-shaped variable section structures, which are welded with steel plates to ensure that the cross beams have sufficient strength.

[0026] The four longitudinal beams A5 and B6 are arranged in a staggered manner. The four longitudinal beams A5 are fixedly connected to each cross beam A, and the four longitudinal beams B6 are fixedly connected to each cross beam B. The four longitudinal beams A5 and the four longitudinal beams B6 correspond to each other one by one, and the corresponding longitudinal beams A5 and longitudinal beams B6 are arranged close to each other side by side. In the supporting state, the ends of the longitudinal beams A5 and B6 are generally aligned.

[0027] The beams A and B are provided with two each and are staggered. Figure 3 As shown, in this embodiment, from right to left are the first crossbeam 1, the second crossbeam 2, the third crossbeam 3 and the fourth crossbeam 4, wherein the first crossbeam 1 and the third crossbeam 3 are crossbeam A, and the second crossbeam 2 and the fourth crossbeam 4 are crossbeam B.

[0028] One end of the frame moving jack 11 is hinged to the beam A, and the other end is hinged to the beam B. Specifically, one end of the frame moving jack 11 in this embodiment is hinged to the second beam 2, and the other end is hinged to the third beam 3.

[0029] There are two frame shifting jacks 11 arranged side by side, so that the left and right movements of frame A and frame B can be consistent when they move relative to each other. If the left and right movements are not synchronized, they can be adjusted with a single-side side push jack.

[0030] The lower ends of the beam A and the beam B are both fixedly connected with telescopic columns 10. In this embodiment, a telescopic column 10 is installed at each end of the beam A, and a telescopic column 10 is installed at each end of the beam B.

[0031] Both ends of the beam A and the beam B are equipped with side thrust jacks 12, which extend in left and right directions with their telescopic shafts facing the side walls of the tunnel. Side thrust seats 7 are installed on the telescopic shafts of the side thrust jacks 12.

[0032] The front end of the longitudinal beam A5 is hinged with a swinging up and down flip beam A8, and a flip jack 13 is connected between the longitudinal beam A5 and the flip beam A8. The flip jack 13 is located below the hinge point of the longitudinal beam A5 and the flip beam A8, one end of which is hinged to the flip beam A8, and the other end is hinged to the longitudinal beam A5.

[0033] The front end of the longitudinal beam B6 is hinged with a tilting beam B9 that swings up and down. A tilting jack 13 is connected between the longitudinal beam B6 and the tilting beam B9. The tilting jack 13 is located below the hinge point of the longitudinal beam B6 and the tilting beam B9, with one end hinged to the tilting beam B9 and the other end hinged to the longitudinal beam B6.

[0034] The upper end surfaces of the flip beam A8 and the flip beam B9 are both fixedly connected with a guard plate 14 to increase the supporting area.

[0035] In this embodiment, the flip beam A8 and the flip beam B9 can swing upward to an angle of 5 degrees with the horizontal plane, and can swing downward to an angle of 32 degrees with the horizontal plane.

[0036] The use method of the utility model: in the supporting state, such as Figure 1 As shown, the telescopic column 10 extends the longitudinal beam A5 and the longitudinal beam B6 to contact and support the tunnel roof, and the telescopic column 10 supports the tunnel floor.

[0037] When the rack needs to be moved, e.g. Figure 3 As shown, the frame moves to the left, first the telescopic column 10 of the frame B is retracted, and under the action of gravity, the beam B6 falls and supports on the beam A (the first beam 1 and the third beam 3), and then the frame transfer jack 11 is extended to push the frame B in the suspended state forward by one step; then the telescopic column 10 of the frame B is extended to support the frame B. Then, the retracted telescopic column 10 of the frame A is retracted, and under the action of gravity, the beam A5 falls and supports on the beam B (the second beam 2 and the fourth beam 4), and then the frame transfer jack 11 is retracted to pull the frame A forward by one step, and the telescopic column 10 of the frame A is extended to support the frame A, and the entire support returns to the initial support state.

[0038] In the supporting state, the front end flip beam A8 and flip beam B9 can be swung up and down by the flip jack 13 to increase the supporting area.

[0039] Of course, the above description is not limited to the above examples. The technical features not described in the present invention can be achieved by or by adopting the existing technology, which will not be repeated here. The above embodiments and drawings are only used to illustrate the technical scheme of the present invention and are not limitations of the present invention. The present invention is described in detail with reference to the preferred implementation methods. Ordinary technicians in this field should understand that the changes, modifications, additions or substitutions made by ordinary technicians in this technical field within the essential scope of the present invention do not deviate from the purpose of the present invention and should also fall within the scope of protection of the claims of the present invention.

Claims

1. A tunnel excavation support hydraulic support, characterized in that: The invention comprises a frame A and a frame B and a frame shifting jack (11) for driving the frame A and the frame B to move relative to each other forward and backward. The frame A comprises a plurality of parallel longitudinal beams A (5) and a plurality of transverse beams A fixedly connected to the lower ends of the longitudinal beams A (5). The frame B comprises a plurality of parallel longitudinal beams B (6) and a plurality of transverse beams B fixedly connected to the lower ends of the longitudinal beams B (6). The lower ends of the transverse beams A and B are both fixedly connected with telescopic columns (10). The longitudinal beams A (5) and the longitudinal beams B (6) are arranged in parallel. The front end of the longitudinal beam A (5) is hinged with a tilting beam A (8) that swings up and down. The front end of the longitudinal beam B (6) is hinged with a tilting beam B (9) that swings up and down.

2. The tunnel excavation support hydraulic support according to claim 1, characterized in that: A flip jack (13) is connected between the longitudinal beam A (5) and the flip beam A (8), and between the longitudinal beam B (6) and the flip beam B (9).

3. The tunnel excavation support hydraulic support according to claim 1, characterized in that: The upper end surface of the flip beam A (8) and the upper end surface of the flip beam B (9) are both fixedly connected with a side guard plate (14).

4. The tunnel excavation support hydraulic support according to claim 1, characterized in that: Both ends of the crossbeam A and the two ends of the crossbeam B are equipped with side thrust jacks (12), and the telescopic shafts of the side thrust jacks (12) are equipped with side thrust seats (7).

5. The tunnel excavation support hydraulic support according to claim 1, characterized in that: The cross beams A and B are each provided with two and are staggeredly arranged.

6. The tunnel excavation support hydraulic support according to claim 1, characterized in that: The longitudinal beams A (5) and the longitudinal beams B (6) are each provided with four and are arranged in a staggered manner.

7. The tunnel excavation support hydraulic support according to claim 1, characterized in that: One end of the frame moving jack (11) is hinged to the crossbeam A, and the other end is hinged to the crossbeam B. Two frame moving jacks (11) are provided and are arranged side by side on the left and right.

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