Arch frame mounting trolley capable of accurately positioning arch frame

Abstract

The utility model discloses a lagging jack mounting trolley capable of accurately positioning a lagging jack. The lagging jack mounting trolley comprises a trolley main body and a steering system, an arch frame lifting and jacking device is arranged on the trolley body, the arch frame jacking device comprises two jacking longitudinal beams which are arranged in parallel in the longitudinal direction of the trolley and provided with a plurality of arch frame carrying trolleys, and the jacking longitudinal beams ascend and descend based on jacking oil cylinders at the two ends; the two plane scanning laser radars are located at the front end and the rear end of the vehicle and used for obtaining tunnel side wall contour data; the bearing cross beam is arranged between the jacking oil cylinder and the jacking longitudinal beam, and a position adjusting device is connected between the jacking longitudinal beam and the bearing cross beam. The device has the advantages that the plane radar is used for obtaining tunnel contour data to control a vehicle to run in the middle, the position adjusting device is used for adjusting the left-right position and the deflection angle of the vehicle, and the purpose of accurately positioning the arch center is achieved. Labor intensity can be relieved, potential safety hazards are reduced or eliminated, accurate centering of the arch center can be rapidly achieved, and the installation efficiency of the arch center is improved.

Description

Technical Field

[0001] The utility model relates to a tunnel operation trolley, in particular to an arch frame installation trolley which can accurately position the arch frame. Background Art

[0002] In the construction of railway or highway tunnels, it is necessary to erect steel arch frames in the excavation section with weak surrounding rock grade. In the prior art, when using trolley-type equipment to erect arch frames, the trolley is first driven to the arch frame installation area, and the arch frame assembly section with the arch top (the assembly section is referred to as the arch frame during the arch frame installation process) is transported to the tunnel ground near the end of the trolley near the tunnel entrance by a transport vehicle or a transfer equipment; then, the arch frame is hoisted above the installation trolley by the arch frame hoisting device on the trolley, and then the arch frame is transferred to the arch frame carrying trolley on the trolley, and the arch frame is transported to the installation position by the carrying trolley, or the arch frame is transported to the installation position by the installation trolley and the carrying trolley together. Finally, the arch frame is lifted to the installation height by the lifting device on the trolley, and then fixed to the excavated tunnel wall by anchor rods. The existing operation in the tunnel relies on manual visual judgment to make it roughly run in the tunnel centerline position; after the arch frame is lifted to the installation height, it is usually necessary to rely on manual push and pull to adjust the left and right positions to ensure the accurate installation position of the arch frame. The labor intensity is high and there are safety hazards. Therefore, improvements are needed to reduce labor intensity, improve arch frame installation efficiency, and reduce or eliminate safety hazards. Summary of the invention

[0003] The purpose of this utility model is to address the defect that the existing arch frame installation trolley needs to rely on manpower for left and right adjustment during the arch frame installation process, and to provide an arch frame installation trolley that can accurately position the arch frame. By setting a plane scanning laser radar on the trolley and setting the lifting longitudinal beam to a structure with adjustable left and right positions, the trolley can be automatically driven on the center line of the tunnel during the process of arch frame installation by using the steering system; at the same time, when the arch frame deviates from the ideal position and needs to be adjusted left and right, the position adjustment device is used to adjust its left and right positions, so as to achieve the purpose of accurate positioning of the arch frame. Compared with the existing method of adjusting the left and right positions of the arch frame by relying on the naked eye to realize the centering of the trolley and the manual push-pull adjustment method, it can reduce labor intensity, reduce or eliminate safety hazards, and improve the efficiency of arch frame installation.

[0004] In order to achieve the above-mentioned purpose, the utility model adopts the following technical scheme.

[0005] An arch frame installation trolley capable of accurately positioning an arch frame comprises a trolley main body arranged on a trolley chassis or having a chassis component, an arch frame lifting device being arranged at one end of the trolley main body; the trolley chassis or the chassis component comprises a steering system; an arch frame lifting device is arranged on the trolley main body, the arch frame lifting device comprises two lifting longitudinal beams arranged in parallel along the longitudinal direction of the trolley, each lifting longitudinal beam is provided with a plurality of arch frame carrying trolleys, and the lifting longitudinal beams are driven to rise and fall based on a lifting cylinder at each end; the trolley also comprises two load-bearing crossbeams and two plane scanning laser radars respectively located at the front and rear ends of the vehicle; the load-bearing crossbeam is arranged between the lifting cylinder and the lifting longitudinal beam, the same end of the two lifting longitudinal beams is movably connected to the same load-bearing crossbeam, and a position adjustment device capable of adjusting the lateral position of the lifting longitudinal beam is connected between the lifting longitudinal beam and the load-bearing crossbeam; the plane scanning laser radar is used to obtain tunnel side wall profile data at the horizontal plane where the radar is located.

[0006] The utility model adopting the above scheme, the arch frame is hoisted on the trolley by the arch frame hoisting device, the plane scanning laser radar at the front and rear ends of the trolley is used to obtain the tunnel side wall profile data of the horizontal plane where the radar is located, and the existing mature vehicle centering driving control technology is used to control the vehicle steering system, so that the trolley drives to the arch frame installation area in the center, laying the foundation for the precise positioning of the arch frame; at the same time, by setting the jacking longitudinal beam to a structure with adjustable left and right positions, when the arch frame deviates from the ideal position and needs to be adjusted left and right during the installation of the arch frame, the position adjustment device is used to adjust its left and right positions, so as to achieve the purpose of accurate positioning of the arch frame. Compared with the existing method of relying on naked eye observation of the center position of the vehicle and manual push-pull adjustment of the arch frame left and right, it can not only reduce labor intensity, reduce or eliminate safety hazards, but also quickly realize the precise centering of the arch frame and improve the efficiency of arch frame installation. Among them, the two jacking longitudinal beams can be fixedly connected together by a connecting rod, or a parallelogram four-bar mechanism can be formed by hinged connecting rods at both ends, so as to achieve a structure in which the two jacking longitudinal beams have synchronous left and right movement. In addition, the position adjustment device can be a hydraulically powered cylinder driven adjustment, or it can be an electric position adjustment device with a screw-nut pair structure.

[0007] Preferably, the plane scanning laser radar is suspended on the lintel of the gantry steel frame of the trolley body to avoid being blocked and to ensure that the position is stable and the arch frame is accurately positioned.

[0008] Preferably, the steering system is based on a steering cylinder to drive the vehicle to steer, thereby simplifying the structure of the steering system, reducing failure points, and improving reliability.

[0009] Preferably, a bearing trolley that moves based on rollers is provided on the bearing crossbeam; the lifting longitudinal beam is seated on the bearing trolley. The use of a trolley that moves based on rollers can reduce the movement resistance of the lifting longitudinal beam and improve the convenience of position adjustment.

[0010] Preferably, one end of the lifting longitudinal beam is hinged to the corresponding carrying trolley through a column hole matching structure, and the other end is connected to the other carrying trolley through the matching of a pin shaft and a long hole. When the two carrying trolleys move relative to each other, the longitudinal axis of the lifting longitudinal beam and the longitudinal axis of the trolley body form an angle change, which can be used to adjust the left and right swing angle when the longitudinal axis of the trolley body is not parallel to the tunnel centerline.

[0011] Further preferably, the load-bearing trolley is provided with load-bearing rollers and anti-skid rollers, the load-bearing rollers are in rolling contact with the top surface of the load-bearing beam, and the anti-skid rollers are located on both sides of the load-bearing beam and can be in rolling contact with the side surfaces of the load-bearing beam; the anti-skid rollers are provided on both sides of the load-bearing beam. This can effectively prevent the trolley from skidding, and through the anti-skid measures, the arch frame on the lifting longitudinal beam is kept from swinging along the longitudinal direction of the trolley, the movement stability of the adjustment process is maintained, and the safety of the adjustment process is ensured.

[0012] More preferably, the bearing crossbeam is an H-shaped steel structure; the bearing trolley is also provided with anti-tilt rollers symmetrically on the left and right, and the roller axes of the anti-tilt rollers and the bearing rollers are parallel to each other, and the two clamp the upper wing plate of the H-shaped steel, so as to prevent the bearing trolley from pressing the bearing crossbeam longitudinally, that is, the trolley from tilting laterally, so that the arch frame does not slide laterally, and the left and right automatic centering function of the two lifting longitudinal beams is maintained.

[0013] Preferably, each of the two ends of the load-bearing crossbeam is provided with a position adjustment device, so that the lifting longitudinal beam is evenly stressed during the left and right position adjustment process, thereby ensuring the adjustment effect.

[0014] Preferably, the position adjustment device is composed of an adjustment oil cylinder, and the two ends of the adjustment oil cylinder are respectively hinged on the lifting longitudinal beam and the bearing cross beam, so as to simplify the structure, reduce the cost and improve the convenience of adjustment.

[0015] The beneficial effect of the utility model is that the arch frame is hoisted on the trolley by the arch frame hoisting device, and the tunnel side wall profile data obtained by the front and rear plane scanning laser radar and the existing mature vehicle centering driving control technology are used to make the trolley always located on the tunnel center line, laying the foundation for the accurate positioning of the arch frame; at the same time, the left and right positions and left and right swing angles of the arch frame are adjusted by the position adjustment device to achieve the purpose of accurate positioning of the arch frame. It can not only reduce labor intensity, reduce or eliminate safety hazards, but also quickly realize accurate centering of the arch frame and improve the efficiency of arch frame installation. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a schematic axonometric diagram of the structure of the utility model.

[0017] Figure 2 This utility model Figure 1 Enlarged view of part A in .

[0018] Figure 3 It is a schematic axonometric diagram of the structure of the arch frame jacking device of the utility model.

[0019] Figure 4 This utility model Figure 2 Enlarged view of part B in .

[0020] Figure 5 It is a structural schematic axonometric diagram of the relevant parts of the load-bearing crossbeam and the load-bearing trolley in the utility model, wherein the load-bearing trolley shown is a structure with long strip holes on the top plate.

[0021] Figure 6 It is a schematic structural front view of the relevant parts of the load-bearing crossbeam and the load-bearing trolley in the utility model. DETAILED DESCRIPTION

[0022] The present invention will be further described below in conjunction with the accompanying drawings, but the present invention is not limited to the scope of the embodiments described.

[0023] See also Figure 1 , Figure 2 , Figure 3 , Figure 4 , Figure 5 and Figure 6 , an arch frame installation trolley that can accurately position the arch frame, comprising a trolley body 1 with a chassis component, the trolley body 1 is provided with an arch frame lifting device 8, and the chassis component includes a steering system; the trolley body 1 is provided with an arch frame lifting device, the arch frame lifting device comprises two lifting longitudinal beams 2 arranged in parallel along the longitudinal direction of the trolley, each lifting longitudinal beam 2 is provided with a plurality of arch frame carrying trolleys 3, and the lifting longitudinal beam 2 is driven to rise and fall based on a lifting cylinder 4 at each end; it also includes two bearing crossbeams 5 and two plane scanning laser radars 9 respectively located at the front and rear ends of the vehicle; the bearing crossbeam 5 is arranged between the lifting cylinder 4 and the lifting longitudinal beam 2, the same end of the two lifting longitudinal beams 2 is movably connected to the same bearing crossbeam 5, and a position adjustment device capable of adjusting the lateral position of the lifting longitudinal beam 2 is connected between the lifting longitudinal beam 2 and the bearing crossbeam 5; the plane scanning laser radar 9 is used to obtain the tunnel side wall profile data of the horizontal plane where the radar is located. The arch frame lifting device 8 is a two-point or four-point balanced lifting structure. The arch frame lifting device 8 is used to lift the arch frame on the tunnel ground from the trolley entrance end and transfer it to the arch frame carrying trolley 3. Each arch frame is jointly supported by an arch frame carrying trolley 3 on each of the two lifting longitudinal beams 2.

[0024] The plane scanning laser radar 9 is suspended on the lintel of the gantry steel frame of the trolley body 1 and is located in the middle of the lintel. The steering wheel 12 is arranged on the wheel suspension, and the wheel suspension is rotatably arranged on the frame beam of the chassis component in the trolley body 1 through the steering pin shaft 11. The steering cylinder 10 in the steering system for driving the steering wheel 12 to steer is connected between the frame beam and the wheel suspension.

[0025] The two ends of the two lifting longitudinal beams 2 are respectively hinged with a connecting rod 13, and the two lifting longitudinal beams 2 and the two connecting rods 13 form a parallelogram four-bar mechanism. A bearing trolley 7 based on roller movement is provided on the bearing crossbeam 5; the two ends of the lifting longitudinal beam 2 are respectively arranged on a bearing trolley 7. A position adjustment device is provided at both ends of the bearing crossbeam 5, and the position adjustment device is composed of an adjustment cylinder 6, and the two ends of the adjustment cylinder 6 are respectively hinged on the bearing trolley 7 and the bearing crossbeam 5. One end of the lifting longitudinal beam 2 is hinged with the corresponding bearing trolley 7 through a column hole matching structure (not shown in the attached figure), and the other end is connected to another bearing trolley 7 through the matching of a pin shaft and a long strip hole 7d.

[0026] The load-bearing trolley 7 is provided with a load-bearing roller 71 and an anti-skid roller 72. The load-bearing roller 71 is in rolling contact with the top surface of the load-bearing beam 5. The anti-skid roller 72 is located on the side of the load-bearing beam 5 and can be in rolling contact with the side of the load-bearing beam 5. The load-bearing beam 5 is an H-shaped steel structure; the load-bearing trolley 7 is also provided with an anti-tilt roller 73. The roller axes of the anti-tilt roller 73 and the load-bearing roller 71 are parallel to each other, and the two clamp the upper wing plate of the H-shaped steel.

[0027] In order to increase the span between the load-bearing roller 71 and the anti-tilt roller 73, as well as the contact area between the anti-skid roller 72 and the load-bearing beam 5, the movement stability of the load-bearing trolley 7 is improved; a rectangular tube 51 is welded on the inner wall surface of the H-shaped steel upper wing plate of the load-bearing beam 5, and the outer side surface of the rectangular tube 51 is flush with the outer side surface of the H-shaped steel upper wing plate of the load-bearing beam 5; the anti-tilt roller 73 can roll in contact with the corresponding side surface of the rectangular tube 51.

[0028] In order to improve the movement stability of the trolley 7 during the adjustment process, rectangular tubes 51 are welded on the inner wall surfaces of both sides of the H-shaped steel wing plate of the load-bearing crossbeam 5, and anti-skid rollers 72 are provided on both sides of the load-bearing crossbeam 5; anti-tilt rollers 73 are provided on both sides of the load-bearing trolley 7; and two coaxial load-bearing rollers 71 are provided at the same position along the longitudinal direction of the load-bearing trolley 7; two load-bearing rollers 71, two anti-skid rollers 72 and two anti-tilt rollers 73 at the same position constitute a roller group; two roller groups are provided on the load-bearing trolley 7. Further improve the stability.

[0029] In this embodiment, the position adjustment device may also be an electric adjustment device of a screw-nut pair structure.

[0030] In this embodiment, the load-bearing trolley 7 includes a top plate 7a connected to the lifting longitudinal beam 2, and a partition plate 7b is welded on the top plate 7a. The partition plate 7b extends vertically downward from both sides and then extends to the middle. The extended parts on both sides form a symmetrical L shape. The two partition plates 7b are welded together through a plurality of longitudinally extending connecting plates 7c. Corresponding rollers are arranged between the two longitudinal connecting plates through roller shafts. A roller group is arranged between the two partition plates 7b. Among them, Figure 5 and Figure 6 The state shown is that a partition plate 7b at the outer end is removed. A circular through hole is provided on the top plate 7a of the trolley 7 at one end of the lifting longitudinal beam 2, and a pin is fixedly connected to the corresponding end of the lifting longitudinal beam 2. The pin cooperates with the circular through hole to form a shaft hole, so that the lifting longitudinal beam 2 can swing left and right relative to the trolley 7; a long hole 7d is provided on the top plate 7a of the trolley 7 at the other end of the lifting longitudinal beam 2, and another pin is fixedly connected to the corresponding end of the lifting longitudinal beam 2. The pin is slidably fitted in the long hole 7d, and the extension direction of the long hole 7d is perpendicular to the movement direction of the trolley 7, so that the lifting longitudinal beam 2 is driven to move, so as to cause the trolley 7 to deflect around the pin axis at the other end, and adjust the left and right deflection angle.

[0031] In this embodiment, the trolley can also adopt a combined structure in which the trolley body 1 and the trolley chassis are two independent parts. When this structure is adopted, the trolley body 1 is fixedly connected to the trolley chassis, but this structural form is not shown in the drawings.

[0032] The preferred specific embodiments of the utility model are described in detail above. It should be understood that ordinary technicians in this field can make many modifications and changes based on the concept of the utility model without creative work. Therefore, all technical solutions that can be obtained by technicians in this technical field based on the concept of the utility model through logical analysis, reasoning or limited experiments on the basis of the existing technology should be within the scope of protection determined by the claims.

Claims

1. An arch frame installation trolley capable of accurately positioning an arch frame, comprising a trolley body (1) arranged on a trolley chassis or having a chassis component, one end of the trolley body (1) is provided with an arch frame lifting device (8); the trolley chassis or chassis component includes a steering system; the trolley body (1) is provided with an arch frame lifting device, the arch frame lifting device comprises two lifting longitudinal beams (2) arranged in parallel along the longitudinal direction of the trolley, each lifting longitudinal beam (2) is provided with a plurality of arch frame carrying trolleys (3), and the lifting longitudinal beam (2) is driven to rise and fall based on a lifting oil cylinder (4) at each end; it is characterized in that The invention also comprises two bearing crossbeams (5) and two plane scanning laser radars (9) respectively located at the front and rear ends of the vehicle; the bearing crossbeam (5) is arranged between the lifting cylinder (4) and the lifting longitudinal beam (2); the same end of the two lifting longitudinal beams (2) is movably connected to the same bearing crossbeam (5); a position adjustment device capable of adjusting the lateral position of the lifting longitudinal beam (2) is connected between the lifting longitudinal beam (2) and the bearing crossbeam (5); the plane scanning laser radar (9) is used to obtain tunnel side wall profile data.

2. The arch frame installation trolley capable of accurately positioning the arch frame according to claim 1, characterized in that: The plane scanning laser radar (9) is suspended on the lintel of the gantry steel frame of the trolley body (1).

3. The arch frame installation trolley capable of accurately positioning the arch frame according to claim 1, characterized in that: The steering system drives the wheels to steer based on a steering cylinder (10).

4. The arch frame installation trolley capable of accurately positioning the arch frame according to claim 1, characterized in that: Two ends of the two lifting longitudinal beams (2) are respectively hinged with a connecting rod (13), and the two lifting longitudinal beams (2) and the two connecting rods (13) form a parallelogram four-bar mechanism.

5. The arch frame installation trolley capable of accurately positioning the arch frame according to any one of claims 1 to 4, characterized in that: A bearing trolley (7) that moves based on rollers is provided on the bearing crossbeam (5); and both ends of the lifting longitudinal beam (2) are respectively provided on one of the bearing trolleys (7).

6. The arch frame installation trolley capable of accurately positioning the arch frame according to claim 5, characterized in that: One end of the lifting longitudinal beam (2) is hinged to the corresponding carrying trolley (7) through a column hole matching structure, and the other end is connected to another carrying trolley (7) through the matching of a pin shaft and a long hole.

7. The arch frame installation trolley capable of accurately positioning the arch frame according to claim 5, characterized in that: The load-bearing trolley (7) is provided with a load-bearing roller (71) and an anti-skid roller (72); the load-bearing roller (71) is in rolling contact with the top surface of the load-bearing beam (5); the anti-skid roller (72) is located on both sides of the load-bearing beam (5) and can be in rolling contact with the side surfaces of the load-bearing beam (5); the anti-skid roller (72) is provided on both sides of the load-bearing beam (5).

8. The arch frame installation trolley capable of accurately positioning the arch frame according to claim 7, characterized in that: The bearing crossbeam (5) is an H-shaped steel structure; the bearing trolley (7) is also provided with anti-tipping rollers (73) symmetrically on the left and right, and the roller axes of the anti-tipping rollers (73) and the bearing rollers (71) are parallel to each other, and the two clamp the upper wing plate of the H-shaped steel.

9. The arch frame installation trolley capable of accurately positioning the arch frame according to claim 5, characterized in that: Both ends of each of the bearing crossbeams (5) are provided with a position adjustment device.

10. The arch frame installation trolley capable of accurately positioning the arch frame according to claim 5, characterized in that: The position adjustment device is composed of an adjustment cylinder (6), and the two ends of the adjustment cylinder (6) are respectively hinged on the lifting longitudinal beam (2) and the carrying trolley (7).

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