Integral arch frame installation method and integral arch frame installation trolley

Abstract

The present invention discloses an integral arch frame installation trolley, comprising a trolley body, a lifting device, a transport lifting device and a first protective net cover, wherein the lifting device is arranged at the rear of the trolley body, and is used to lift the arch frame in a flat state to an upright state; the transport lifting device comprises a slide rail arranged on the top of the trolley body along the direction from the front to the rear of the trolley body and a lifting strut that can slide along the slide rail, and the transport lifting device is used to translate the arch frame in an upright state to the installation area at the front of the vehicle and lift it to the installation height; the first protective net cover is arranged on both sides of the translation surface of the lifting strut and is arranged close to the front of the vehicle. The present invention solves the problem that the existing arch frame installation machine has a complex structure and lacks a protective structure, which is not conducive to the personal safety of construction workers.

Description

Technical Field

[0001] The invention relates to the field of tunnel construction, and in particular to an integral arch frame installation method and an integral arch frame installation trolley. Background Art

[0002] In my country's current tunnel construction, when the surrounding rock is weak and severely broken, it is necessary to install steel arch frames as initial support in a timely manner to control the deformation of the surrounding rock and prevent collapse. Steel arch frames generally use two structures: steel arch frames and grid steel frames, and are combined with tie bars, mesh, locking anchors and shotcrete to form a joint support.

[0003] The installation of steel arch frames mainly adopts manual installation, that is, with the help of simple platforms or loaders, the arch frames are installed in place by manpower. This installation method requires a large number of construction workers, high labor intensity, low work efficiency, poor installation quality, and high construction risks. At present, domestically developed three-arm arch frame installation machines and other equipment have been used to meet the installation of steel arch frames in mountain tunnels. However, these existing arch frame installation machines have complex structures and lack protective structures, which are not conducive to the personal safety of construction workers. Summary of the invention

[0004] Based on this, it is necessary to provide an integral arch frame installation method and an integral arch frame installation trolley to address the problem that the existing arch frame installation machine has a complex structure and lacks a protective structure, which is not conducive to the personal safety of construction workers.

[0005] The present invention provides an integral arch frame installation trolley, comprising:

[0006] Trolley body;

[0007] A lifting device, arranged at the rear of the trolley body, for lifting the arch frame from a flat state to an upright state;

[0008] The transport jacking device comprises a slide rail arranged on the top of the trolley body along the direction from the front to the rear of the trolley body and a lifting support rod that can slide along the slide rail. The transport jacking device is used to translate the arch frame in an upright state to the installation area at the front of the trolley and lift it to the installation height;

[0009] The first protective net cover is arranged on both sides of the translation surface of the lifting support rod and is arranged close to the front of the vehicle.

[0010] Preferably, the integral arch frame installation trolley further comprises a receiving frame arranged above the slide rail and a lifting mechanism connecting the receiving frame and the trolley body, wherein the receiving frame is used to receive the arch frame.

[0011] Preferably, the lifting device includes a winch arranged on both sides of the slide rail, a fixed pulley arranged on one side of the winch and close to the rear of the vehicle, a steel cable with one end wound around the winch and the other end bypassing the fixed pulley, and a clamp arranged at one end of the steel cable away from the winch, wherein the clamp is used to connect to the arch frame.

[0012] Preferably, the lifting device comprises a mechanical arm arranged on the trolley and a clamping claw arranged at a free end of the mechanical arm, and the clamping claw is used to grasp the arch.

[0013] Preferably, the integral arch frame installation trolley further comprises working platforms arranged on both sides of the trolley body, and a second protective mesh cover is arranged on the upper part of the working platform.

[0014] Preferably, the integral arch frame installation trolley also includes a protective mesh plate and a flipping mechanism arranged at the front of the vehicle, the lower part of the protective mesh plate is hinged to the trolley body, one end of the flipping mechanism is hinged to the installation trolley, and the other end is hinged to the upper part of the protective mesh plate, and is used to drive the protective mesh plate to flip at a certain angle to get close to the palm face.

[0015] Preferably, an opening is provided in the middle of the protective mesh plate, and a mesh door is provided at the opening.

[0016] Preferably, the slide rail is an I-beam, and the transfer jacking device also includes rollers arranged in the grooves on both sides of the I-beam and roller brackets connected to the rollers. The lifting strut includes a first cylinder arranged at the lower end on the roller bracket and a support seat arranged at the top of the first cylinder, and the support seat is provided with a groove adapted to the arch frame.

[0017] The present invention also provides an integral arch frame installation method, which uses the above-mentioned integral arch frame installation trolley, comprising the following steps:

[0018] Lifting the arch frame from a horizontal position to an upright position;

[0019] The arch frame in the upright state is translated to the installation area and lifted to the installation height;

[0020] Anchor the arch frame that has been lifted to the installation height.

[0021] Preferably, the step of lifting the arch from a flat state to an upright state further comprises:

[0022] Using the lower end of the arch frame as a fulcrum, the arch top of the arch frame is lifted to above the receiving frame;

[0023] The receiving frame is lifted to receive the arch frame and keep the arch frame upright off the ground.

[0024] The present invention provides an integral arch frame installation trolley including a trolley body, a lifting device, a transfer jacking device and a first protective net cover. The lifting device can lift the arch frame in a flat state to an upright state; the transfer jacking device then translates the arch frame in the upright state to an installation area at the front of the vehicle and lifts it to an installation height, wherein the first protective net cover is arranged on both sides of the translation surface of the lifting support rod and is arranged close to the front of the vehicle, and the staff can fix the arch frame to the inner wall of the tunnel in the first protective net cover. Compared with the existing arch frame installation trolley, the arch frame installation trolley in the present invention has a simpler structure, and the transportation and jacking installation of the arch frame can be completed through the cooperation of the lifting device and the transfer jacking device, and the provision of the first protective net cover makes the construction process safer. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Figure 1 It is a structural schematic diagram of an embodiment of the integral arch frame installation trolley of the present invention;

[0026] Figure 2 for Figure 1 A schematic structural diagram of the arch mounting trolley from another perspective in the embodiment;

[0027] Figure 3 The figure is a flow chart of an embodiment of the method for installing an integral arch frame in the present invention. DETAILED DESCRIPTION

[0028] Embodiment 1:

[0029] The present invention proposes an integral arch frame installation trolley, referring to Figure 1 to Figure 2The integral arch frame installation trolley includes a trolley body 10, a lifting device 20, a transfer lifting device 30 and a first protective net cover 40; wherein the trolley body 10 is driven by a crawler 11 or a wheel drive. The lifting device 20 is arranged at the rear of the trolley body 10, and is used to lift the arch frame in a flat state to an upright state; the lifting device 20 includes a winch 21 arranged on both sides of the slide rail 31, a fixed pulley 22 arranged on one side of the winch 21 and close to the rear of the vehicle, a steel cable 23 with one end wound around the winch 21 and the other end bypassing the fixed pulley 22, and a clamp arranged at one end of the steel cable 23 away from the winch 21, and the clamp is used to connect with the arch frame. The arch frame includes a steel arch frame and a grid steel frame, and the above-mentioned arch frame can be an integrated type or a split splicing type. The steel cable 23 is released from the winch 21, and the clamps are symmetrically clamped at a certain point on the left and right sides of the arch frame. The winch 21 recycles the steel cable 23, and the arch frame uses the lower ends of the left and right sides as fulcrums to lift the arch top of the arch frame to a vertical state. In this embodiment, the lifting device 20 is not limited to the scheme of the winch 21 steel cable 23 stretching, and a mechanical arm with multiple degrees of freedom and a clamping claw set at the free end of the mechanical arm can also be set on the trolley, and the clamping claw is used to grab the arch frame. The mechanical arm directly lifts the arch frame to an upright state so that it can be docked with the transfer jacking device 30.

[0030] In this embodiment, the transfer lifting device 30 includes a slide rail 31 arranged on the top of the trolley body 10 along the direction from the front to the rear of the trolley body 10, and a lifting support rod 32 that can slide along the slide rail 31. The slide rail 31 is preferably an I-beam, and rollers are arranged on the grooves on both sides of the I-beam. The rollers on both sides are connected by roller brackets, so that the roller brackets can translate in the slide rail 31. The lifting support rod 32 includes a first oil cylinder with a lower end arranged on the top of the roller bracket 33 and a support seat 34 arranged on the top of the first oil cylinder. The support seat 34 is provided with a groove adapted to the arch frame, and the groove is used to support the arch frame. When the arch frame is lifted to a vertical state, the roller bracket 33 is pushed to the bottom of the arch frame by manual or motor push, and the lifting support rod 32 thereon rises upward and docks with the arch frame on it until the arch frame is lifted off the ground. After the arch frame leaves the ground, it is transferred to the front of the vehicle until it is transferred horizontally to the installation area. The lifting struts 32 continue to lift the arch frame to make it close to the top of the tunnel for subsequent fixed installation.

[0031] In this embodiment, the first protective mesh cover 40 is arranged on both sides of the translational surface of the lifting strut 32 and is arranged close to the front of the vehicle. In this embodiment, the virtual surface formed by the translation of the lifting strut 32 is the translational surface. When the arch frame is in translational transportation, the first protective mesh cover 40 is located below the arch frame, and the lifting strut 32 moves between the two first protective mesh covers 40. When the arch frame reaches the specified height of the installation area, the construction personnel can carry out the next step of installation and fixing of the arch frame under the protection of the first protective mesh cover 40, so that it is connected and fixed to the inner wall of the tunnel. Further, a working window is arranged on the first protective mesh cover 40, and the size of the working window is larger than the mesh size of the mesh cover. In addition, a translation mechanism whose translation direction is parallel to the slide rail 31 is arranged at the lower end of the first protective mesh cover 40, and the translation mechanism is used to drive the first protective mesh cover 40 so that its working window corresponds to the arch frame.

[0032] The present invention provides an integral arch frame installation trolley including a trolley body 10, a lifting device 20, a transfer jacking device 30 and a first protective net cover 40. The lifting device 20 can lift the arch frame in a flat state to an upright state; the transfer jacking device 30 then translates the arch frame in the upright state to the installation area at the front of the vehicle and lifts it to the installation height, wherein the first protective net cover 40 is arranged on both sides of the translation surface of the lifting support rod 32 and is arranged close to the front of the vehicle, and the staff can fix the arch frame on the inner wall of the tunnel in the first protective net cover 40. Compared with the existing arch frame installation trolley, the arch frame installation trolley in the present invention has a simpler structure, and the transportation and jacking installation of the arch frame can be completed by the cooperation of the lifting device 20 and the transfer jacking device 30, and the provision of the first protective net cover 40 makes the construction process safer.

[0033] Embodiment 2:

[0034] In this embodiment, the integral arch frame installation trolley also includes a receiving frame 51 arranged above the slide rail 31 and a lifting mechanism 52 connecting the receiving frame 51 and the trolley body 10, and the receiving frame 51 is used to receive the arch frame. The lifting mechanism 52 is preferably an oil cylinder, which is vertically arranged, with its lower end connected to the trolley body 10 and its upper end connected to the receiving frame 51. When the arch frame is lifted to an upright state by the lifting device 20, the receiving frame 51 below it is lifted to receive the arch frame. Therefore, in this embodiment, by setting the receiving frame 51 and the lifting mechanism 52, it can be used to receive multiple arch frames for continuous operation and improved work efficiency.

[0035] In this embodiment, the integral arch frame installation trolley also includes a working platform arranged on both sides of the trolley body 10, and a second protective mesh cover 62 is arranged on the upper part of the working platform. In this embodiment, the working platform includes a first table top 61 and a second table top 63 arranged below the first table top 61. The first table top 61 and the second table top 63 are arranged to prevent the staff from fixing the parts of the arch frame at different heights to the inner wall of the tunnel. Furthermore, the second protective mesh cover 62 is arranged above the first table top 61 to protect the staff thereon, and the second table top 63 is under the shelter of the first table top 61, so that the staff can also work safely.

[0036] In this embodiment, the integral arch installation trolley also includes a protective mesh plate 71 and a flip mechanism 72 arranged at the front of the trolley. The lower part of the protective mesh plate 71 is hinged to the trolley body 10. One end of the flip mechanism 72 is hinged to the installation trolley, and the other end is hinged to the upper part of the protective mesh plate 71, which is used to drive the protective mesh plate 71 to flip a certain angle to get close to the face, so as to prevent the collapse of the tunnel from endangering the construction personnel on the trolley. The flip mechanism 72 is preferably an oil cylinder with one end hinged to the trolley body 10 and the other end hinged to the protective mesh plate 71. An opening is also provided in the middle of the protective mesh plate 71, and a mesh door is provided at the opening. The opening and closing of the mesh door can facilitate the passage of vehicles and personnel.

[0037] Embodiment 3:

[0038] Reference Figures 1 to 3 The present invention also proposes an integral arch frame installation method, using the above-mentioned integral arch frame installation trolley, comprising the following steps:

[0039] S10. Lift the arch frame from a flat state to an upright state; in this step, for an arch frame installation trolley using a winch 21 as a lifting device 20, the steel cable 23 wound on the winch 21 can be released so that the clamps at one end of the steel cable 23 are symmetrically clamped at a certain point on the left and right sides of the arch frame, respectively. The winch 21 retracts the steel cable 23, and the arch frame uses the lower ends of the left and right sides as fulcrums to lift the arch top of the arch frame to a vertical state by the winch 21. For an arch frame installation trolley using a mechanical arm as a lifting device 20, the mechanical arm and its upper clamp can also be used to grab the arch frame and lift the arch frame to an upright state so that it can be docked with the transfer jacking device 30.

[0040] S20. The arch frame in the upright state is translated to the installation area and lifted to the installation height; in this step, when the arch frame is lifted to the upright state, the roller bracket 33 is driven (manually or by a motor) to the bottom of the arch frame, and the lifting support rod 32 on it rises upward and docks with the arch frame on it until the arch frame is lifted off the ground. After the arch frame is off the ground, it is transferred to the front of the vehicle until it is translated to the installation area, and the lifting support rod 32 continues to lift the arch frame close to the top of the tunnel for subsequent fixed installation.

[0041] S30. Anchor the arch frame that has been lifted to the installation height. In this step, construction workers install retractable anchor pipes on both sides of the arch frame to lock it. When the gap between the arch frame and the inner wall of the tunnel is large, concrete blocks are inserted into the gap to wedge it tightly and then spray concrete to fill it. The longitudinal connection of the arch frame is connected by steel bars.

[0042] The present invention provides an integral arch frame installation trolley including a trolley body 10, a lifting device 20, a transfer jacking device 30 and a first protective net cover 40. The lifting device 20 can lift the arch frame in a flat state to an upright state; the transfer jacking device 30 then translates the arch frame in the upright state to the installation area at the front of the vehicle and lifts it to the installation height, wherein the first protective net cover 40 is arranged on both sides of the translation surface of the lifting support rod 32 and is arranged close to the front of the vehicle, and the staff can fix the arch frame on the inner wall of the tunnel in the first protective net cover 40. Compared with the existing arch frame installation trolley, the arch frame installation trolley in the present invention has a simpler structure, and the transportation and jacking installation of the arch frame can be completed by the cooperation of the lifting device 20 and the transfer jacking device 30, and the provision of the first protective net cover 40 makes the construction process safer.

[0043] Furthermore, the above step S10 further includes the following steps:

[0044] The arch top of the arch is lifted to the top of the receiving frame 51 with the lower end of the arch as a fulcrum, and the receiving frame 51 receives the arch; the receiving frame 51 continues to lift the arch off the ground and keeps it upright. In this embodiment, the receiving frame 51 and the lifting mechanism 52 can be used to receive multiple arches for continuous operation and improved work efficiency.

[0045] The technical features of the above embodiments can be combined arbitrarily. In order to make the description concise, all possible combinations of the technical features in the above embodiments are not described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification. The above embodiments only express several implementation methods of the present invention, and their descriptions are relatively specific and detailed, but they cannot be understood as limiting the scope of the invention patent. It should be pointed out that for ordinary technicians in this field, without departing from the concept of the present invention, several variations and improvements can be made, which all belong to the protection scope of the present invention. Therefore, the protection scope of the patent of the present invention shall be based on the attached claims.

Claims

1. An integral arch frame installation trolley, characterized in that: include: Trolley body; A lifting device, arranged at the rear of the trolley body, for lifting the arch frame from a flat state to an upright state; The transport jacking device comprises a slide rail arranged on the top of the trolley body along the direction from the front to the rear of the trolley body and a lifting support rod that can slide along the slide rail. The transport jacking device is used to translate the arch frame in an upright state to the installation area at the front of the trolley and lift it to the installation height; The first protective net cover is arranged on both sides of the imaginary plane formed by the lifting support rod and the slide rail and is arranged close to the front of the vehicle; Among them, it also includes working platforms arranged on both sides of the trolley body, and a second protective net cover is arranged on the upper part of the working platform; It also includes a protective mesh plate and a flipping mechanism arranged at the front of the vehicle, wherein the lower part of the protective mesh plate is hinged to the trolley body, one end of the flipping mechanism is hinged to the installation trolley, and the other end is hinged to the upper part of the protective mesh plate, and is used to drive the protective mesh plate to flip at a certain angle to be close to the tunnel face; The integral arch frame installation trolley further comprises a receiving frame arranged above the slide rail and a lifting mechanism connecting the receiving frame and the trolley body, wherein the receiving frame is used to receive the arch frame; An opening is also provided in the middle of the protective mesh plate, and a mesh door is provided at the opening; The slide rail is an I-beam, the transfer jacking device also includes rollers arranged in the grooves on both sides of the I-beam, roller brackets connected to the rollers, the lifting strut includes a first oil cylinder with a lower end arranged on the roller bracket and a support seat arranged at the top of the first oil cylinder, and the support seat is provided with a groove adapted to the arch frame; The lifting device includes winches arranged on both sides of the slide rail, a fixed pulley arranged on one side of the winch and close to the rear of the vehicle, a steel cable with one end wound around the winch and the other end wound around the fixed pulley, and a clamp arranged at one end of the steel cable away from the winch, and the clamp is used to connect with the arch frame; Alternatively, the lifting device comprises a mechanical arm arranged on the trolley and a clamping claw arranged at a free end of the mechanical arm, wherein the clamping claw is used to grasp the arch frame.

2. A method for installing an integral arch frame, using the integral arch frame installation trolley according to claim 1, characterized in that: The following steps are involved: Lifting the arch frame from a horizontal position to an upright position; The arch frame in the upright state is translated to the installation area and lifted to the installation height; The arch frame lifted to the installation height is fixed to the inner wall of the tunnel.

3. The method for installing an integral arch according to claim 2, characterized in that: The step of lifting the arch frame from a flat state to an upright state also includes: The arch top of the arch frame is lifted to above the receiving frame with the lower end of the arch frame as a fulcrum; the receiving frame is lifted to receive the arch frame and keep the arch frame upright off the ground.

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