Tunnel face forepoling excavating device

Abstract

The utility model provides a tunnel face forepoling excavating device, which relates to the technical field of face tunneling and comprises a tunnel, a support connected to the middle of the tunnel, a base arranged at the top of the support, a telescopic groove arranged at the top of the base, a hydraulic telescopic rod arranged at one end of the telescopic groove, and a rotating motor connected to one end of the hydraulic telescopic rod. The end, away from the hydraulic telescopic rod, of the rotating motor is in transmission connection with a connecting rod, the end, away from the connecting rod, of the connecting rod is provided with a chain saw, and sliding assemblies are arranged on the two sides of the rotating motor and slide along the two sides of the telescopic groove. Displacement and deflection of a chain saw can be controlled through a hydraulic telescopic rod and a rotating motor which are arranged in the device, so that a groove can be conveniently formed in the arc-shaped edge of a tunnel face, an advance support is more conveniently built, no mudstone falls off when the tunnel face is tunneled, and the construction efficiency is improved. And the tunneling of the tunnel face is more stable.

Description

Technical Field

[0001] The utility model relates to the technical field of tunnel face excavation, in particular to a tunnel face advance support excavation device. Background Art

[0002] Face excavation is the construction process of continuing to excavate the excavated end face of the tunnel.

[0003] However, during the excavation of the face, it is impossible to build advance support and only perform preliminary stabilization of the anchor rods, which makes it easy for mud and rocks to fall during the excavation process, thus affecting the safety of the construction. Utility Model Content

[0004] The purpose of the utility model is to provide a tunnel face advance support excavation device to solve the problem that when the tunnel face is being excavated, only drilling and anchoring can be carried out, and a complete support cannot be built, which makes it easy for mud and rocks to fall during excavation construction, leading to construction safety problems.

[0005] The utility model is achieved through the following technical solutions:

[0006] The utility model provides an advance support excavation device for a tunnel face, comprising a tunnel, a bracket connected to the middle of the tunnel, a base provided on the top of the bracket, a telescopic slot provided on the top of the base, a hydraulic telescopic rod provided at one end of the telescopic slot, a rotating motor connected at one end of the hydraulic telescopic rod, a connecting rod provided at one end of the rotating motor away from the hydraulic telescopic rod, an oil saw provided at one end of the connecting rod away from the connecting rod, sliding assemblies provided on both sides of the rotating motor, and the sliding assemblies slide along both sides of the telescopic slot.

[0007] Preferably, the chain saw is arranged transversely and is aligned with the edge of the palm face.

[0008] Preferably, the base is telescopically arranged.

[0009] Preferably, the hydraulic telescopic rod and the rotary motor are both connected to the power supply via wires.

[0010] Preferably, the sliding assembly includes a slide groove, a slider, a roller and a positioning rod. The slide groove is arranged on both sides of the middle of the telescopic groove, the slider is arranged on both sides of the rotating motor, the roller is arranged on one side of the slider, and the positioning rod is arranged on the top of the slider.

[0011] Preferably, the slider cooperates with the slide groove.

[0012] Preferably, the positioning rod is only provided on the top of the slider on one side of the rotating motor, and the top protruding portion of the positioning rod is in the strip grooves on both sides of the opening of the telescopic slot.

[0013] Preferably, length markings are provided on both sides of the telescopic slot opening to match the groove openings of the positioning rod.

[0014] The technical solution of the utility model has at least the following advantages and beneficial effects:

[0015] 1. The hydraulic telescopic rod and the rotating motor provided in the device can control the displacement and deflection of the chain saw, so that grooves can be easily opened on the arc edge of the tunnel face, so as to more conveniently build advanced support, so that there will be no mud and rocks falling during excavation of the tunnel face, and the excavation of the tunnel face will be more stable.

[0016] 2. The device is also provided with a sliding assembly that can limit the displacement of the rotating motor through the slider, making its displacement more stable. At the same time, the forward depth of the chain saw can be better controlled through the positioning rod on the top of the slider. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the following is a brief introduction to the drawings required for use in the embodiments. It should be understood that the following drawings only illustrate certain embodiments of the present invention and therefore should not be regarded as limiting the scope. For ordinary technicians in this field, other relevant drawings can be obtained based on these drawings without paying any creative work.

[0018] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0019] Figure 2 This is a schematic diagram of the front cross-sectional structure of the bracket of the utility model;

[0020] Figure 3 This is a schematic diagram of the cross-sectional structure of the bracket of the utility model;

[0021] Icons: tunnel 1, bracket 2, base 201, telescopic slot 202, slide 2021, hydraulic telescopic rod 203, rotating motor 204, slider 2041, roller 2042, positioning rod 2043, connecting rod 205, chain saw 206. DETAILED DESCRIPTION

[0022] It should also be noted that, in the description of this utility model, unless otherwise expressly specified or limited, the terms "disposed," "installed," "connected," and "connected" should be understood in a broad sense. For example, they can refer to fixed connections, detachable connections, or integral connections; mechanical connections, electrical connections; direct connections, indirect connections through an intermediate medium, and internal connections between two components. Those skilled in the art will understand the specific meanings of the above terms in this utility model based on the specific circumstances.

[0023] The following combination Figures 1 to 3 The utility model is described in detail.

[0024] A tunnel face advance support excavation device includes a tunnel 1, a support 2 connected to the middle of the tunnel 1, a base 201 provided on the top of the support 2, a telescopic slot 202 provided on the top of the base 201, a hydraulic telescopic rod 203 provided at one end of the telescopic slot 202, a rotating motor 204 connected at one end of the hydraulic telescopic rod 203, a connecting rod 205 transmission-connected to the end of the rotating motor 204 away from the hydraulic telescopic rod 203, an oil saw 206 provided at the end of the connecting rod 205 away from the connecting rod 205, sliding components provided on both sides of the rotating motor 204, the sliding components slide along both sides of the telescopic slot 202, the oil saw 206 is arranged horizontally and aligned with the edge of the tunnel face, the base 201 is telescopically arranged, and the hydraulic telescopic rod 203 and the rotating motor 204 are both connected to a power supply via wires.

[0025] First, the bracket 2 is moved to the tunnel face of the tunnel 1 through the support and movement of the base 201, and then the hydraulic telescopic rod 203 at one end of the telescopic slot 202 starts to operate to push the rotating motor 204 to move in the slide 2021, thereby pushing the chain saw 206 on the connecting rod 205 at one end to contact the curved edge of the tunnel face, and then the chain saw 206 starts to operate to cut and excavate the tunnel face. At the same time, the hydraulic telescopic rod 203 continues to push, so that the chain saw 206 can dig deep into the edge of the tunnel face.

[0026] Furthermore, the sliding assembly includes a slide groove 2021, a slider 2041, a roller 2042 and a positioning rod 2043. The slide groove 2021 is arranged on both sides of the middle part of the telescopic groove 202, the slider 2041 is arranged on both sides of the rotating motor 204, the roller 2042 is arranged on one side of the slider 2041, and the positioning rod 2043 is arranged on the top of the slider 2041. The slider 2041 cooperates with the slide groove 2021, and the positioning rod 2043 is only arranged on the top of the slider 2041 on one side of the rotating motor 204. The top protruding part of the positioning rod 2043 is in the strip grooves on both sides of the opening of the telescopic groove 202, and the groove openings on both sides of the opening of the telescopic groove 202 that cooperate with the positioning rod 2043 are provided with length scale marks.

[0027] After the chainsaw 206 digs into the face, the motor 204 is rotated to drive the connecting rod 205 to deflect, so that the chainsaw 206 will move in a circle along the arc edge of the face, so that the face can be directly and conveniently excavated, so that an arched groove can be directly dug at the edge of the face, and then the isolation board can be directly laid and cement poured, so that an arched advance support will be directly formed, so that when the face is excavated, mud and rocks will not fall, avoiding the difficulty of ordinary manual excavation in operating and excavating the arc edge.

[0028] At the same time, when the rotating motor 204 moves, the sliders 2041 on both sides will be embedded in the slide groove 2021 to move, so that the movement of the rotating motor 204 will be limited, making its movement more stable. At the same time, the raised roller 2042 on one side of the slider 2041 will reduce its friction, making the movement of the rotating motor 204 smoother. At the same time, the slider 2041 on one side will drive the top positioning rod 2043 to move in the strip grooves on both sides of the opening of the telescopic groove 202. By observing where the positioning rod 2043 moves to the scale mark in the strip groove, the distance moved by the hydraulic telescopic rod 203 can be judged, and the excavation depth of the chain saw 206 can be better controlled.

[0029] The following is a specific implementation process of the present invention. First, the support 2 is moved to the tunnel face of the tunnel 1 through the support and movement of the base 201. Then, the hydraulic telescopic rod 203 at one end of the telescopic slot 202 starts to operate to drive the rotary motor 204 to move in the slide 2021, thereby pushing the chain saw 206 on the connecting rod 205 at one end to contact the arc edge of the tunnel face. Then, the chain saw 206 starts to operate to cut and excavate the tunnel face. At the same time, the hydraulic telescopic rod 203 is continuously pushed to allow the chain saw 206 to dig deep into the edge of the tunnel face. After the chain saw 206 digs into the tunnel face, the connecting rod 205 is driven to deflect by the operation of the rotary motor 204, so that the chain saw 206 will move in a circle along the arc edge of the tunnel face, so that the tunnel face can be directly and conveniently excavated, so that an arched groove can be directly dug at the edge of the tunnel face, and then isolation can be directly laid. The plate is then poured with cement, so that it will directly form an arched advance support, so that when excavating the tunnel face, mud and rocks will not fall, and it is avoided that ordinary manual excavation is difficult to operate and excavate on the arc edge. At the same time, when the rotating motor 204 moves, the sliders 2041 on both sides will be embedded in the slide 2021 for movement, so that the movement of the rotating motor 204 will be limited, making its movement more stable. At the same time, the raised roller 2042 on one side of the slider 2041 will reduce its friction, so that the movement of the rotating motor 204 will be smoother. At the same time, when the slider 2041 on one side is displaced, it will drive the top positioning rod 2043 to move in the strip grooves on both sides of the opening of the telescopic groove 202. By observing where the positioning rod 2043 moves to the scale mark in the strip groove, the distance moved by the hydraulic telescopic rod 203 can be judged, and the excavation depth of the chain saw 206 can be better controlled.

[0030] The above are merely preferred embodiments of the present invention and are not intended to limit the present invention. Those skilled in the art will readily appreciate that the present invention is susceptible to various modifications and variations. Any modifications, equivalent substitutions, or improvements made within the spirit and principles of the present invention shall be included within the scope of protection of the present invention.

Claims

1. A tunnel face advance support excavation device, comprising a tunnel (1), characterized in that: The middle part of the tunnel (1) is connected to a bracket (2), a base (201) is provided on the top of the bracket (2), a telescopic slot (202) is provided on the top of the base (201), a hydraulic telescopic rod (203) is provided at one end of the telescopic slot (202), one end of the hydraulic telescopic rod (203) is connected to a rotating motor (204), an end of the rotating motor (204) away from the hydraulic telescopic rod (203) is connected to a connecting rod (205) in a transmission manner, an end of the connecting rod (205) away from the connecting rod (205) is provided with an oil saw (206), and sliding components are provided on both sides of the rotating motor (204), and the sliding components slide along both sides of the telescopic slot (202).

2. The tunnel face advance support excavation device according to claim 1, characterized in that: The chain saw (206) is arranged horizontally, and the chain saw (206) is aligned with the edge of the tunnel face.

3. The tunnel face advance support excavation device according to claim 1, characterized in that: The base (201) is telescopically arranged.

4. The tunnel face advance support excavation device according to claim 1, characterized in that: The hydraulic telescopic rod (203) and the rotary motor (204) are both connected to a power source via a wire.

5. The tunnel face advance support excavation device according to claim 1, characterized in that: The sliding assembly comprises a slide groove (2021), a slider (2041), a roller (2042) and a positioning rod (2043); the slide groove (2021) is arranged on both sides of the middle of the telescopic slot (202); the slider (2041) is arranged on both sides of the rotating motor (204); the roller (2042) is arranged on one side of the slider (2041); and the positioning rod (2043) is arranged on the top of the slider (2041).

6. The tunnel face advance support excavation device according to claim 5, characterized in that: The slider (2041) cooperates with the slide groove (2021).

7. The tunnel face advance support excavation device according to claim 5, characterized in that: The positioning rod (2043) is only arranged on the top of the slider (2041) on one side of the rotating motor (204), and the top protruding part of the positioning rod (2043) is in the strip grooves on both sides of the opening of the telescopic slot (202).

8. The tunnel face advance support excavation device according to claim 5, characterized in that: Length markings are provided on both sides of the opening of the telescopic slot (202) to match the groove openings of the positioning rod (2043).

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