A crawler anchor drilling vehicle with guarded head support platform

Abstract

The utility model discloses a head-on support platform with a crawler anchor drilling vehicle, comprising a main head-on protection net frame, a frame body, and a support beam. The frame body is connected to the support beam through a spiral swing oil cylinder I. Side head-on protection net frames are movably connected on both sides of the main head-on protection net frame. The main head-on protection net frame is connected to the frame body through a spiral swing oil cylinder II. A plurality of movable channel steels are symmetrically arranged on the frame body. Side beams are arranged on both sides of the frame body. A plurality of movable rods are connected to one side of the side beam. The movable rods are slidably matched with the movable channel steel. The movable rods are fixed to one end of a transverse telescopic oil cylinder, and the other end of the transverse telescopic oil cylinder is fixed in the movable channel steel. Controlling the telescopic oil cylinder can drive the side beams and the movable steel on both sides of the frame body to telescope in the movable channel steel. The utility model can gradually expand the side beams, movable rods, the main head-on protection net frame, and the side head-on protection net frame according to needs, so as to ensure that the entire support platform meets actual needs, avoid working under an empty roof, and ensure construction safety.

Description

Technical Field

[0001] The utility model relates to the technical field of tunnel excavation machinery, in particular to a head-on support platform with a guard of a crawler type anchor drilling vehicle. Background Art

[0002] At present, in the process of tunnel excavation construction in my country, the excavation work on the front face is not allowed to be carried out under the empty roof, so the tunnel excavation construction must be carried out under the supported tunnel, and the existing support platform mostly adopts a fixed structure, that is, in each tunnel excavation cycle, the tunnel top area that it can protect is fixed. This support platform cannot adapt to the changing geological conditions of the tunnel roof, that is, when the roof conditions are good, it cannot meet the support needs of single-cycle multi-row excavation (long excavation and long support), and when the roof conditions are poor, it cannot meet the support needs of small-row excavation. The poor adaptability seriously restricts the excavation efficiency of the tunnel. In addition, with the promotion and application of mechanization, some construction companies have adopted special anchor drilling vehicles, or installed temporary supports on the tunnel boring machine or adopted a digging and anchoring machine. After the tunnel is blasted or fully excavated, the anchor drill is driven to the head or the tunnel boring machine hangs a net to temporarily support the empty top area, but this support is usually just an I-shaped one, which can only temporarily support the top of the tunnel with a simple net. Since the contact area with the top is too small, it cannot play a supporting role. At the same time, due to the lack of support, the head surface may also collapse, posing a safety hazard; in addition, this support mechanism can only support one row at a time. When the top plate is good, it can support two rows at a time, which cannot meet the needs of construction; therefore, providing a new support platform mechanism with head protection that can adapt to multi-row tunnel excavation support operations is a problem that technical personnel in this field urgently need to solve. Utility Model Content

[0003] The purpose of the utility model is to provide a head-on support platform with a guard for a crawler anchor drilling vehicle to solve the problems existing in the prior art. During operation, the side telescopic beams and the head-on guard net can be gradually unfolded according to the needs of tunnel excavation to ensure that the entire support platform mechanism meets actual needs, avoid working under an empty roof, and ensure construction safety.

[0004] To achieve the above-mentioned purpose, the utility model provides the following scheme: a crawler anchor drilling vehicle with a guarded head support platform, comprising a main head guard grid frame, a frame body, and a support beam, the frame body is connected to the support beam through a spiral swing cylinder I, side head guard grid frames are movably connected on both sides of the main head guard grid frame, the main head guard grid frame is connected to the frame body through a spiral swing cylinder II, a plurality of movable channel steels are symmetrically arranged on the frame body, side beams are arranged on both sides of the frame body, a plurality of movable rods corresponding to the positions of the movable channel steels are connected to one side of the side beams, the movable rods are slidably matched with the movable channel steels, the movable rods are fixed to one end of a transverse telescopic cylinder by a pin shaft, and the other end of the transverse telescopic cylinder is fixed in the movable channel steel by a pin shaft, and controlling the telescopic cylinder can drive the side beams and the movable steels on both sides of the frame body to telescope in the movable channel steels.

[0005] Furthermore, the main head guard net frame is movably connected to the side head guard net frames on both sides through hinges.

[0006] Compared with the prior art, the utility model has achieved the following technical effects:

[0007] The utility model can replace the support platform frame on the crawler anchor trolley equipment, and can also replace the support frame on the airborne support platform on the tunnel boring machine, or be used in the temporary support platform of tunnel excavation equipment such as drilling rigs, so as to meet the support needs during tunnel excavation and ensure construction safety. When the utility model is used, the side beams, mobile rods, main head protection net frames and side head protection net frames can be gradually deployed according to the needs of tunnel excavation, ensuring that the entire support platform mechanism meets the actual needs, avoiding working under the empty roof, and ensuring construction safety. BRIEF DESCRIPTION OF THE DRAWINGS

[0008] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0009] Figure 1 This is a schematic diagram of the working state structure of the utility model in the lane;

[0010] Figure 2 for Figure 1 The structural diagram of the main head screen at different rotation angles in the middle is enlarged;

[0011] Figure 3 This is a schematic diagram of the main structure of the utility model;

[0012] Figure 4 for Figure 3 AA cross-sectional structure diagram in;

[0013] Figure 5 This is a schematic diagram of the structure of the utility model in a fully expanded state;

[0014] Figure 6 It is a schematic diagram of the structure of the utility model in all contracted states.

[0015] In the figure, 1. tunnel; 2. crawler anchor drilling vehicle; 3. tunnel roof; 4. spiral swing cylinder I; 5. frame body; 6. main head grid; 7. tunnel head; 8. tunnel bottom; 9. support beam; 10. spiral swing cylinder II; 11. pin shaft; 12. transverse telescopic cylinder; 13. movable channel steel; 14. movable rod; 15. side beam; 16. hinge; 17. lateral head grid. DETAILED DESCRIPTION

[0016] In order to enable those skilled in the art to better understand the technical solution of the present invention, the present invention is further described in detail below in combination with specific implementation modes according to the accompanying drawings.

[0017] As shown in the figure, the crawler anchor drilling vehicle with a head-on support platform is installed on the crawler anchor drilling vehicle operating on the bottom surface 8 of the tunnel in the tunnel 1, and includes a main head-on protection grid frame 6, a frame body 5, and a support beam 9. The frame body 5 is connected to the support beam 9 through a spiral swing cylinder Ⅰ4. The two sides of the main head-on protection grid frame 6 are movably connected with side head-on protection grid frames 17 through hinges. The main head-on protection grid frame is connected to the frame body 5 through a spiral swing cylinder Ⅱ14. A plurality of movable channel steels 13 corresponding to the positions of movable channel steels are symmetrically arranged on the frame body. Side beams 15 are arranged on both sides of the frame body. A plurality of movable rods 14 are connected to one side of the side beam. The movable rod 14 is slidably matched with the movable channel steel. The movable rod is fixed to one end of a transverse telescopic cylinder 12 through a pin shaft 11, and the other end of the transverse telescopic cylinder 12 is fixed in the movable channel steel through the pin shaft 11. Controlling the telescopic cylinder can drive the side beams and the movable steel on both sides of the frame body to telescope in the movable channel steel.

[0018] When the utility model is working, the hydraulic system controls the lateral telescopic cylinder 12 to drive the side beams 15 on both sides and the moving rod 14 to move horizontally in the moving channel steel 13 on the frame body 5 to adjust, which can adapt to various different tunnel sections and various different anchor bolts and anchor cable spacings; the main head grid 6 is connected to the frame body through the spiral swing cylinder II, and the spiral swing cylinder II 10 is controlled by the hydraulic system to drive the main head grid to rotate 180°. When fully opened, it can support multi-row support hanging nets, and when opened 90°, it can support the tunnel head 7, and it can be fully retracted after the support construction is completed; the left and right sides of the main head grid are respectively installed with side head grids 17 through hinges 16, and the side head grids can be opened and closed according to the working conditions to adapt to different tunnel sections; the frame body 5 is connected to the supporting beam 9 of the whole machine through the spiral swing cylinder I, and the spiral swing cylinder I is controlled by the hydraulic system to drive the entire support platform to rotate 180°, so that it can adapt to the tunnel roof 3 with different inclination angles. This support platform can quickly support the empty top area after the tunnel boring machine cuts into the tunnel depth, and simultaneously supports the tunnel front face 7, which greatly improves the safety of the support operation.

[0019] This specification uses specific examples to illustrate the principles and implementation methods of the utility model. The above examples are only used to help understand the method and core idea of ​​the utility model. At the same time, for those skilled in the art, according to the idea of ​​the utility model, there will be changes in the specific implementation methods and application scope. In summary, the content of this specification should not be understood as limiting the utility model.

Claims

1. A head-on support platform with guard for a crawler anchor drilling vehicle, characterized in that: The invention comprises a main frontal protection net frame (6), a frame body (5), and a support beam (9), wherein the frame body (5) is connected to the support beam (9) via a spiral swing oil cylinder I (4), side frontal protection net frames (17) are movably connected to both sides of the main frontal protection net frame (6), the main frontal protection net frame (6) is connected to the frame body (5) via a spiral swing oil cylinder II (10), a plurality of movable channel steels (13) are symmetrically arranged on the frame body (5), side beams (15) are arranged on both sides of the frame body (5), and the side beams (15) ) is connected to one side with a plurality of moving rods (14) corresponding to the positions of the moving channel steel (13), the moving rods (14) and the moving channel steel (13) are slidably matched, the moving rods (14) are fixed to one end of the transverse telescopic cylinder (12) through a pin shaft (11), and the other end of the transverse telescopic cylinder (12) is fixed in the moving channel steel (13) through a pin shaft, so that the transverse telescopic cylinder (12) can be controlled to drive the side beams (15) and the moving rods (14) on both sides of the frame body (5) to extend and retract in the moving channel steel (13).

2. The head-on support platform with guard for a crawler anchor drilling vehicle according to claim 1, characterized in that: The main front guard net frame (6) and the side front guard net frames (17) on both sides are movably connected via hinges (16).

Images