A tunnel steel arch installation auxiliary trolley

Abstract

The present application relates to the technical field of tunnel arch frame engineering construction equipment, in particular to a kind of tunnel steel arch frame installation auxiliary trolley and application method, solve the effective supporting adjustment means for the assembly process and the steel arch frame after assembly in the prior art are short, and the auxiliary trolley of present only has lifting construction function, and cannot provide effective support with backtracking amount, to prevent the quality deviation caused by the steel arch frame in construction due to installation causes installation precision technical problems, the lifting support function provided in the present technical scheme has two sections, one section is used for main lifting, another section is used for the adjustment of backtracking load of support;The present technical scheme can effectively assist positioning, even if deviation is caused by the deviation of weight in construction, it is also easy to complete the re-adjustment by the cooperation of abutting positioning mechanism and jacking mechanism, and the backtracking load effect of abutting positioning mechanism can also well avoid part of the accidents caused by full rigid contact.

Description

Technical Field

[0001] This invention relates to the field of tunnel arch frame construction equipment technology, and in particular to an auxiliary trolley for installing tunnel steel arch frames and its application method. Background Technology

[0002] In the prior art, Chinese invention application CN109681245A, entitled "A Tunnel Steel Arch Frame Installation Trolley," discloses a technical solution that mentions that in drill-and-blast tunnel construction, when encountering surrounding rock with poor self-stability, initial support must be carried out immediately after the excavation process: installing steel arches, hanging wire mesh, and performing concrete spraying to consolidate the tunnel and prevent collapse. Current methods for installing steel arches typically involve using a simple steel platform as a platform, moving it by shoulder and hand, placing each section of the steel arch, and then connecting them in mid-air and installing bolts. Each section of the steel arch weighs approximately 200 kg, resulting in high labor intensity, slow construction speed, and inability to provide timely and effective support to the excavated section. When tunnel instability and collapse occur, this poses a significant threat to personal and equipment safety and is prone to accidents. This technical solution provides a tunnel steel arch frame installation trolley, including a main platform, chassis, robotic arm, and gripper. The chassis is located at the bottom of the main platform, and the robotic arm is located on the main platform. The end of the robotic arm is equipped with a gripper. The tunnel steel arch frame installation trolley provided by this invention can lift and install the pre-assembled steel arch frame on the ground to the required location in the tunnel, thereby reducing labor intensity and making the installation of the steel arch frame quick and safe.

[0003] The existing technical problem is that there is a lack of effective means of support and adjustment for the steel arch frame during and after assembly. Furthermore, the current auxiliary trolley only has the function of lifting and lowering the construction, and cannot provide effective support with backtracking to prevent the installation accuracy problem caused by the mass displacement of the steel arch frame during construction. Summary of the Invention

[0004] This invention aims to address the lack of effective support and adjustment methods for the assembly process and the assembled steel arch frame in the existing technology. Furthermore, the current auxiliary trolleys only have lifting and lowering functions and cannot provide effective support with backtracking to prevent the installation accuracy problem caused by the mass deviation of the steel arch frame during construction. This invention provides an auxiliary trolley for tunnel steel arch frame installation and its application method.

[0005] To solve the above-mentioned technical problems, the technical solution of the present invention is as follows: A tunnel steel arch frame installation auxiliary trolley includes a vehicle body 100 and support mechanisms 200 extending on both sides of the vehicle body for positioning, comprising: Two sets of support platforms 10 are arranged on the vehicle body 100; In terms of the direction of travel of the vehicle, the height of the outer set of support platforms 10 is less than the height of the inner set of support platforms 10. A shear lifting mechanism 20 is arranged on each set of support platforms 10. The shear lifting mechanism 20 can be lifted vertically. The abutment positioning mechanism 30 has an abutment end 301 that can abut against the supporting arc surface 2 of the steel arch frame 1. After abutting against the supporting arc surface 2 of the steel arch frame 1, it is subjected to the pressure of the steel arch frame 1 to generate a pressure perpendicular to the horizontal plane, so that the abutment positioning mechanism 30 retracts a predetermined distance towards the horizontal plane; and A lifting mechanism 40 is arranged above the shear-type lifting mechanism 20. The lifting mechanism 40 is used to push the abutment positioning mechanism 30 in a first direction so that the abutment end 301 contacts the support arc surface 2.

[0006] Specifically, the supporting arc surface 2 includes a superior arc area 3 located at the top of the steel arch frame 1 and inferior arc areas 4 located on both sides of the steel arch frame 1; Each of the abutting ends 301 abuts within the inferior arc region 4.

[0007] Specifically, the shear-type lifting mechanism 20 includes: Upper platform 21 and lower platform 22, The lower platform 22 is fixedly connected to the support platform 10; A platform base 23 is fixedly connected to the upper platform 21; A shear-type lifting assembly connects the upper platform 21 and the lower platform 22, and the movement of the shear-type lifting assembly is controlled by a drive cylinder 210 so that the upper platform 21 and the lower platform 22 remain parallel during the lifting process.

[0008] Specifically, the shear-type lifting assembly includes: The first parallel mechanism includes two sets of parallel first linkage groups 11, wherein the second end of one set of first linkage groups 11 is rotatably connected to the first side of the lower platform 22. The first end of another first link assembly 11 is rotatably connected to the second side of the upper platform 21; The two sets of first connecting rod groups 11 are rotatably connected by two sets of second connecting rod groups 12, and The end of each second link group 12 is taken as the rotation point 1001; Specifically, the second parallel mechanism includes two sets of parallel third linkages 13; The first end of one set of the third linkage group 13 is rotatably connected to the first side of the upper platform 21, and the second end of the other set of the third linkage group 13 is rotatably connected to the second side of the lower platform 22; The first end of the third link group 13, which connects to the lower platform 22, is connected to a common rotation point 1002; The second end of the third link group 13 connecting the upper platform 21 is connected to another common rotation point 1002; The common rotation point 1002 is the rotation point 1001 at the end of the first link group 11 and the second link group 12; A support shaft 16 is provided at the corresponding common rotation point 1002; and as well as A transverse rod 14 is connected to the third link group 13 that connects the lower platform 22; The fixed end of the drive cylinder 210 is rotatably connected to one-third of the lower platform 22 near the first connecting rod group 11, and its output end has a sleeve 15, which is sleeved on the transverse rod 14.

[0009] Specifically, the abutment positioning mechanism 30 includes: The abutting body 31 is covered with a rubber sleeve on its top and radial sides; The second end of the abutting body 31 is connected to the action body 32; The actuator 32 is radially constructed with two sets of symmetrical main slides 310 in the vertical direction of the actuator 32, which do not extend to both ends of the actuator 32. The first radial slide 302 has a first end connected to the first end of a set of main slides 310, and a second end connected to the second end of another main slide 310. The second radial slide 303 has its second end connected to the first end of a set of main slides 310, and its first end connected to the second end of another main slide 310. The first radial slide 302 and the second radial slide 303 are connected to the main slide 310 in a spiral direction in the radial direction of the actuating body 32; and The slide rail limiting post 311 can extend into the main slide rail 310 and reach the first radial slide rail 302 or the second radial slide rail 303 after the moving body 32 moves up and down. The slide rail limiting post 311 is partially located inside a transverse moving sleeve 320, and one end of the transverse moving sleeve 320 is connected to a limiting spring 330. The limiting spring 330 is connected to a fixing part 340; The fixing part 340 is fixedly connected inside the transverse moving sleeve 320.

[0010] Specifically, the abutment positioning mechanism 30 further includes: The movable frame 33 has a connecting end 331; The first end of the connecting end 331 is fixedly connected to the lower part of the action body 32; A spring 332 is connected below the connecting end 331; The rebound spring 332 is connected to a fixed plate 333; A set of guide posts 334 are arranged on both sides of the rebound spring 332; The first end of the guide post 334 is fixedly connected to the connecting end 331; The second end of the guide post 334 can pass through the guide hole 335 of the frame body 351; The fixing plate 333 is fixedly connected to the lower part of the transverse moving sleeve 320 by an L-shaped component 336; Specifically, a vertical connecting plate 341 is connected to one side of the fixing plate 333; The fixing plate 333 is connected to a support block 342; The lifting mechanism 40 includes: a lifting cylinder 410; The lifting cylinder 410 is detachably connected to the first side of the upper platform 21; The output direction of the lifting cylinder 410 is vertically upward; The output end of the lifting cylinder 410 is fixedly connected to the support block 342.

[0011] Specifically, the mobile frame 33 also includes: Frame body 351, which is connected to the connecting end 331; The lower end of the frame 351 is provided with a pull ring connection part 352, and a pull rope is provided on the pull ring connection part 352.

[0012] A method for positioning an auxiliary trolley for installing tunnel steel arch frames, as described above, is used for positioning construction of tunnel steel arch frames, comprising: Step S1: Transport the components for steel arch frame 1 to the location. First, prefabricate the high-level components of steel arch frame 1, and then splice and prefabricate the components of the inferior arc zone 4 from bottom to top. When the height is greater than 5 meters, transport the two tunnel steel arch frame installation auxiliary trolleys to the location. Step S2: Two auxiliary trolleys for installing tunnel steel arch frames are moved into place. First, the shearing lifting mechanism 20 is raised, and then the jacking mechanism 40 is raised. That is, the two abutting ends 301 of each auxiliary trolley for installing tunnel steel arch frames on one side of the steel arch frame 1 are arranged at different heights, and the two abutting ends 301 and the endpoints of the steel arch frame 1 on the ground form a three-point arc connection for positioning. Step S3: Gradually splice the superior arc area 3 of the steel arch frame 1 to the arch top position of the steel arch frame 1, and use the abutment end 301 to bear the load, and gradually adjust through the lifting cylinder 410 to ensure that the abutment positioning mechanism 30 can still maintain three-point positioning after backtracking. In addition, scaffolding or lifting work vehicles may be necessary. Step S4, after the splicing endpoints of the near superior arc zone 3 and inferior arc zone 4 are completed, the abutment end 301 will bear the full weight and be adjusted using the lifting cylinder 410. If the positioning mechanism 30 is stuck with the steel arch frame 1, the fault can be resolved by manually pulling the rope or by connecting a tensioning machine at different angles.

[0013] The present invention has the following beneficial effects: Firstly, the lifting support function provided by this technical solution has two stages: one stage is used for main lifting, and the other stage is used for adjusting the back load-bearing capacity of the support. Secondly, this technical solution can effectively assist in positioning. Even if deviations are caused by weight shifts during construction, it is easy to readjust through the cooperation of the abutment positioning mechanism and the lifting mechanism. The back-load bearing effect of the abutment positioning mechanism can also effectively avoid some accidents caused by rigid contact. Thirdly, the application method provided by this technical solution is not only conducive to adjustment and installation, but also applicable to disassembly and reassembly, and has the advantages of strong adjustability, saving labor and improving construction efficiency. Attached Figure Description

[0014] The present invention will now be described in further detail with reference to the accompanying drawings and specific embodiments.

[0015] Figure 1 This is a schematic diagram of the structure of the present invention; Figure 2 This is a schematic diagram of the shear-type lifting mechanism of the present invention; Figure 3 This is a schematic diagram of the abutment positioning mechanism of the present invention; Figure 4 This is a schematic diagram illustrating the arrangement of the method of use of the present invention; Figure 5 This is a three-dimensional structural schematic diagram of the shear-type lifting mechanism of the present invention; Figure 6 This is a three-dimensional schematic diagram of the action body of the present invention.

[0016] Figure label: 1. Steel arch frame; 2. Supporting arc surface; 3. Superior arc zone; 4. Inferior arc zone; 10. Support platform; 11. First link group; 12. Second link group; 13. Third link group; 14. Transverse rod; 15. Sleeve joint; 16. Support shaft; 20. Shear-type lifting mechanism; 21. Upper platform; 22. Lower platform; 23. Platform base; 30. Abutment positioning mechanism; 31. Abutment body; 32. Moving body; 33. Lifting mechanism; 40. Vehicle body; 100. Support mechanism; 200. Drive cylinder; 210. Abutment end; 301. First radial slide 302, second radial slide 303, main slide 310, slide limit post 311, lateral moving sleeve 320, limit spring 330, fixing part 340, connecting end 331, rebound spring 332, fixing plate 333, guide post 334, guide hole 335, L-shaped component 336, vertical connecting plate 341, support block 342, frame body 351, pull ring connecting part 352, lifting cylinder 410, rotation point 1001, common rotation point 1002. Detailed Implementation

[0017] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the scope of protection of the present invention. It should be noted that, for ease of description, in this application, "left side" is referred to as "first end", "right side" as "second end", "upper side" as "first end", and "lower side" as "second end" in the current view. The purpose of such description is to clearly express the technical solution and should not be construed as an improper limitation of the technical solution of this application.

[0018] This invention addresses the lack of effective support and adjustment methods for the steel arch frame during and after assembly in existing technologies. Furthermore, current auxiliary trolleys only offer lifting and lowering functions and cannot provide effective backtracking support to prevent installation inaccuracies caused by mass shifts in the steel arch frame during installation. The specific configuration of this technical solution is detailed in the appendix. Figure 1 , 4 As shown, the tunnel steel arch frame installation auxiliary trolley includes a vehicle body 100 and support mechanisms 200 extending on both sides of the vehicle body for positioning. In a more preferred embodiment and usage, two such tunnel steel arch frame installation auxiliary trolleys are used. Each tunnel steel arch frame installation auxiliary trolley can be modified from an existing engineering vehicle. The specific engineering vehicle is generally configured with a vehicle body 100 and support mechanisms 200 for positioning, as shown in the attached diagram. Figure 1 , 4 As shown, the specific support mechanism 200 is an engineering vehicle with a cantilever support; In a further configuration, two sets of support platforms 10 are arranged on the vehicle body 100; wherein, viewed in the direction of travel of the vehicle body, the height of the outer set of support platforms 10 is less than the height of the inner set of support platforms 10. Since the tunnels under construction are mostly not perfectly curved, specifically not perfectly semi-circular, and this curve usually has a certain span, this plan requires two or more vehicles to work together during construction. (See attached...) Figure 4 The following is an example illustrating the configuration method; Then, for the assembly of the steel arch frame 1, a shearing lifting mechanism 20 is designed. A shearing lifting mechanism 20 is arranged on each set of support platforms 10. The shearing lifting mechanism 20 can be lifted vertically. The positioning and support function is provided by the abutment positioning mechanism 30, which has an abutment end 301 that can abut against the support arc surface 2 of the steel arch frame 1. After abutting against the support arc surface 2 of the steel arch frame 1, it is subjected to the pressure of the steel arch frame 1 to generate a pressure perpendicular to the horizontal plane, so that the abutment positioning mechanism 30 retracts a preset distance towards the horizontal plane. In this way, the support method is changed to a non-direct, non-rigid positioning contact. The advantages of this contact are mainly reflected in the change of construction scenario, such as the control of construction steps and the control of curvature. It can also ensure the safety of construction. That is, when the abutment end 301 is deformed or loosened, this support method can be coordinated accordingly, which can improve the fault tolerance space for fault handling. In addition, a set of lifting mechanisms 40 is arranged above the shear-type lifting mechanism 20. The lifting mechanism 40 is used to push the abutment positioning mechanism 30 in the first direction so that the abutment end 301 contacts the support arc surface 2. It mainly plays the role of height adjustment and is easier to adapt to the overall shape of the steel arch frame 1.

[0019] In one specific embodiment, please refer to Figure 1 , 2 As shown, the supporting arc surface 2 includes a superior arc zone 3 located at the top of the steel arch frame 1 and inferior arc zones 4 located on both sides of the steel arch frame 1; each abutting end 301 abuts within the inferior arc zone 4; the reason for this configuration is that this technical solution does not need to control the quality of the superior arc zone 3, but it is easier to control the superior arc zone 3 by using the existing method of building the main support group, and the superior arc zone 3 has a center point, and the positioning of the center point is the advantage of this solution.

[0020] Therefore, based on the above, the advantages of this technical solution are: Firstly, the lifting support function provided by this technical solution has two stages: one stage is used for main lifting, and the other stage is used for adjusting the back load-bearing capacity of the support. Secondly, this technical solution can effectively assist in positioning. Even if deviations are caused by weight shifts during construction, it is easy to readjust through the cooperation of the abutment positioning mechanism and the lifting mechanism. The back-load bearing effect of the abutment positioning mechanism can also effectively avoid some accidents caused by rigid contact. Thirdly, the application method provided by this technical solution is not only conducive to adjustment and installation, but also applicable to disassembly and reassembly, and has the advantages of strong adjustability, saving labor and improving construction efficiency.

[0021] In one specific embodiment, please refer to Figure 2 , 5 As shown, the shear-type lifting mechanism 20 includes: The upper platform 21 and the lower platform 22 are fixedly connected to the support platform 10. The upper platform 21 is fixedly connected to the platform base 23. The shearing lifting assembly connects the upper platform 21 and the lower platform 22 and controls the movement of the shearing lifting assembly through a drive cylinder 210 so that the upper platform 21 and the lower platform 22 remain parallel during the lifting process.

[0022] In one specific embodiment, please refer to Figure 2 , 5 As shown, the shear-type lifting assembly includes: a first parallel mechanism, which includes two sets of parallel first linkage groups 11, wherein the second end of one set of first linkage groups 11 is rotatably connected to the first side of the lower platform 22; the first end of the other set of first linkage groups 11 is rotatably connected to the second side of the upper platform 22; the two sets of first linkage groups 11 are rotatably connected through two sets of second linkage groups 12, and the end of each set of second linkage groups 12 is used as the rotation point 1001; In one specific embodiment, please refer to Figure 1-3 As shown, the second parallel mechanism includes two sets of parallel third linkage groups 13. The first end of one set of third linkage 13 is rotatably connected to the first side of the upper platform 21, and the second end of another set of third linkage 13 is rotatably connected to the second side of the lower platform 22; Among them, the first end of the third link group 13 connecting the lower platform 22 is connected to a common rotation point 1002; The second end of the third linkage 13 connected to the platform 21 is connected to another common rotation point 1002; The common rotation point 1002 is the rotation point 1001 at the end of the first link group 11 and the second link group 12; A support shaft 16 is provided on the corresponding common rotation point 1002; and a transverse rod 14 is connected between the third link group 13 connecting the lower platform 22; the fixed end of the drive cylinder 210 is rotatably connected to one-third of the lower platform 22 near the first link group 11, and its output end has a sleeve 15, which is sleeved on the transverse rod 14.

[0023] In one specific embodiment, please refer to Figure 1 , 2 As shown in Figures 3 and 6, the abutment positioning mechanism 30 includes: an abutment body 31, the top and radial sides of which are covered with rubber sleeves; and an actuating body 32 connected to the second end of the abutment body 31. The actuator 32 is radially constructed with two sets of symmetrical main slides 310 in the vertical direction of the actuator 32, which do not extend to both ends of the actuator 32; the first radial slide 302 has its first end connected to the first end of one set of main slides 310, and its second end connected to the second end of another set of main slides 310; the second radial slide 303 has its second end connected to the first end of one set of main slides 310, and its first end connected to the second end of another set of main slides 310; the first radial slide 302 and the second radial slide 303 are connected to the main slides 310 in a spiral direction in the radial direction of the actuator 32; and a slide limiting post 311, which can extend into the main slides 310, and after the actuator 32 moves up and down, it reaches the first radial slide 302 or the second radial slide 303; the slide limiting post 311 is partially located in a transverse moving sleeve 320, and one end located in the transverse moving sleeve 320 is connected to a limiting spring 330. The limiting spring 330 is connected to a fixing part 340; the fixing part 340 is fixedly connected inside the transverse moving sleeve 320.

[0024] In one specific embodiment, please refer to Figure 2 As shown, the abutment positioning mechanism 30 further includes: a movable frame 33 having a connecting end 331; the first end of the connecting end 331 is fixedly connected to the lower part of the action body 32; A spring 332 is connected to the lower part of the connecting end 331; the spring 332 is connected to a fixed plate 333; a set of guide posts 334 are arranged on both sides of the spring 332; the first end of the guide post 334 is fixedly connected to the connecting end 331; the second end of the guide post 334 can pass through the guide hole 335 of the frame body 351; the fixed plate 333 is fixedly connected to the lower part of the transverse moving sleeve 320 through an L-shaped component 336, thus realizing the principle of springback in this technical solution.

[0025] In one specific embodiment, please refer to Figure 2As shown, a vertical connecting plate 341 is connected to one side of the fixed plate 333; a support block 342 is connected to the fixed plate 333; the lifting mechanism 40 includes a lifting cylinder 410. The lifting cylinder 410 is detachably connected to the first side of the upper platform 21; the output direction of the lifting cylinder 410 is vertically upward; the output end of the lifting cylinder 410 is fixedly connected to the support block 342.

[0026] In one specific embodiment, please refer to Figure 2 As shown, the movable frame 33 also includes: a frame body 351, which is connected to a connecting end 331; a pull ring connecting part 352 is provided at the lower end of the frame body 351, and a pull rope is provided on the pull ring connecting part 352 as a way to deal with a fault, such as when the abutment end 301 is stuck.

[0027] In addition, this technical solution proposes a positioning method using an auxiliary trolley for tunnel steel arch frame installation, which is used for positioning construction of tunnel steel arch frames, including: Step S1: Transport the components for steel arch frame 1 to the location. First, prefabricate the high-level components of steel arch frame 1, and then splice and prefabricate the components of the inferior arc zone 4 from bottom to top. When the height is greater than 5 meters, transport the two tunnel steel arch frame installation auxiliary trolleys to the location. Step S2: Two auxiliary trolleys for installing tunnel steel arch frames are moved into place. First, the shearing lifting mechanism 20 is raised, and then the jacking mechanism 40 is raised. That is, the two abutting ends 301 of each auxiliary trolley for installing tunnel steel arch frames on one side of the steel arch frame 1 are arranged at different heights, and the two abutting ends 301 and the endpoints of the steel arch frame 1 on the ground form a three-point arc connection for positioning. Step S3: Gradually splice the superior arc area 3 of the steel arch frame 1 to the arch top position of the steel arch frame 1, and use the abutment end 301 to bear the load, and gradually adjust through the lifting cylinder 410 to ensure that the abutment positioning mechanism 30 can still maintain three-point positioning after backtracking. In addition, scaffolding or lifting work vehicles may be necessary. Step S4, after the splicing endpoints of the near superior arc zone 3 and inferior arc zone 4 are completed, the abutment end 301 will bear the full weight and be adjusted using the lifting cylinder 410. When the positioning mechanism 30 is stuck with the steel arch frame 1, the fault can be resolved by manually pulling the rope or by connecting a tensioning machine at different angles.

[0028] Obviously, the above embodiments are merely illustrative examples for clear explanation and are not intended to limit the implementation. Those skilled in the art will recognize that other variations or modifications can be made based on the above description. It is neither necessary nor possible to exhaustively list all possible implementations here. However, obvious variations or modifications derived therefrom are still within the scope of protection of this invention.

Claims

1. A tunnel steel arch frame installation auxiliary trolley, comprising a vehicle body (100) and support mechanisms (200) extending on both sides of the vehicle body for positioning, characterized in that, include: Two sets of support platforms (10) are arranged on the vehicle body (100); In terms of the direction of travel of the vehicle body, the height of the outer set of support platforms (10) is less than the height of the inner support platform (10); A shear lifting mechanism (20) is arranged on each set of support platforms (10), and the shear lifting mechanism (20) can be lifted vertically. The abutment positioning mechanism (30) has an abutment end (301) that can abut against the supporting arc surface (2) of the steel arch frame (1), and after abutting against the supporting arc surface (2) of the steel arch frame (1), it is subjected to the pressure of the steel arch frame (1) to generate a pressure perpendicular to the horizontal plane, so that the abutment positioning mechanism (30) retraces a predetermined distance towards the horizontal plane; and A lifting mechanism (40) is arranged above the shear lifting mechanism (20). The lifting mechanism (40) is used to push the abutting positioning mechanism (30) in a first direction so that the abutting end (301) contacts the supporting arc surface (2). The contact positioning mechanism (30) includes: The abutting body (31) is covered with a rubber sleeve on its top and radial sides; The second end of the abutting body (31) is connected to the action body (32). The action body (32) is radially constructed with two sets of symmetrical main slides (310) in the vertical direction of the action body (32) and not extending to both ends of the action body (32). A first radial slide (302) has a first end connected to the first end of a set of main slides (310) and a second end connected to the second end of another main slide (310); A second radial slide (303) has its second end connected to the first end of a set of main slides (310), and its first end connected to the second end of another main slide (310); The first radial slide (302) and the second radial slide (303) are connected to the main slide (310) in a spiral direction in the radial direction of the actuator (32); and The slide rail limiting post (311) can extend into the main slide rail (310) and reach the first radial slide rail (302) or the second radial slide rail (303) after the moving body (32) moves up and down; The slide rail limiting post (311) is located inside a transverse moving sleeve (320), and one end of the transverse moving sleeve (320) is connected to a limiting spring (330). The limiting spring (330) is connected to a fixing part (340); The fixing part (340) is fixedly connected inside the transverse moving sleeve (320); The abutment positioning mechanism (30) further includes: A mobile frame (33) having a connecting end (331); The first end of the connecting end (331) is fixedly connected to the lower part of the action body (32); A spring (332) is connected below the connecting end (331). The rebound spring (332) is connected to a fixed plate (333); A set of guide posts (334) are arranged on both sides of the spring (332). The first end of the guide post (334) is fixedly connected to the connecting end (331); The second end of the guide post (334) can be inserted into the guide hole (335) of the frame body (351); The fixed plate (333) is fixedly connected to the lower part of the transverse moving sleeve (320) by an L-shaped component (336).

2. The tunnel steel arch frame installation auxiliary trolley as described in claim 1, characterized in that, The supporting arc surface (2) includes a superior arc area (3) located at the top of the steel arch frame (1) and inferior arc areas (4) located on both sides of the steel arch frame (1). Each of the abutting ends (301) abuts within the inferior arc region (4).

3. The tunnel steel arch frame installation auxiliary trolley as described in claim 2, characterized in that, The shear-type lifting mechanism (20) includes: Upper platform (21) and lower platform (22). The lower platform (22) is fixedly connected to the support platform (10); A platform base (23) is fixedly connected to the upper platform (21); A shear-type lifting assembly is connected to the upper platform (21) and the lower platform (22), and the shear-type lifting assembly is controlled by a drive cylinder (210) so that the upper platform (21) and the lower platform (22) remain parallel during the lifting process.

4. The tunnel steel arch frame installation auxiliary trolley as described in claim 3, characterized in that, The shear-type lifting assembly includes: The first parallel mechanism includes two sets of parallel first linkage groups (11), wherein the second end of one set of first linkage groups (11) is rotatably connected to the first side of the lower platform (22); The first end of another first linkage (11) is rotatably connected to the second side of the upper platform (21); The two sets of first link groups (11) are rotatably connected by two sets of second link groups (12), with the end of each set of second link groups (12) serving as the rotation point (1001).

5. The tunnel steel arch frame installation auxiliary trolley as described in claim 4, characterized in that, The second parallel mechanism includes two sets of parallel third linkages (13). The first end of one set of the third linkage group (13) is rotatably connected to the first side of the upper platform (21), and the second end of the other set of the third linkage group (13) is rotatably connected to the second side of the lower platform (22); The first end of the third link group (13) connecting the lower platform (22) is connected to a common rotation point (1002); The second end of the third link assembly (13) connecting the upper platform (21) is connected to another common rotation point (1002); The common rotation point (1002) is the rotation point (1001) at the end of the first link group (11) and the second link group (12). A support shaft (16) is provided at the corresponding common rotation point (1002); and A transverse rod (14) is connected between the third link group (13) that connects the lower platform (22); The fixed end of the drive cylinder (210) is rotatably connected to the lower platform (22) at one-third of the distance from the first connecting rod group (11), and its output end has a sleeve (15) which is sleeved on the transverse rod (14).

6. The tunnel steel arch frame installation auxiliary trolley as described in claim 1, characterized in that, A vertical connecting plate (341) is connected to one side of the fixing plate (333). The fixing plate (333) is connected to a support block (342); The lifting mechanism (40) includes: a lifting cylinder (410); The lifting cylinder (410) is detachably connected to the first side of the upper platform (21); The output direction of the lifting cylinder (410) is vertically upward; The output end of the lifting cylinder (410) is fixedly connected to the support block (342).

7. The tunnel steel arch frame installation auxiliary trolley as described in claim 1, characterized in that, The mobile framework (33) also includes: The frame body (351) is connected to the connecting end (331). The lower end of the frame (351) is provided with a pull ring connection part (352), and a pull rope is provided on the pull ring connection part (352).

8. A method for positioning an auxiliary trolley for installing a tunnel steel arch as described in claim 7, used for positioning and construction of a tunnel steel arch, characterized in that, include: Step S1: Transport the components for the steel arch frame (1) to the location. First, prefabricate the high-level components of the steel arch frame (1), and then splice and prefabricate the components of the inferior arc area (4) from bottom to top. When the height is greater than 5 meters, transport the two tunnel steel arch frame installation auxiliary trolleys to the location. Step S2: Two auxiliary trolleys for installing tunnel steel arch frames are moved into place. First, the shearing lifting mechanism (20) is raised, and then the jacking mechanism (40) is raised. That is, the two abutting ends (301) of each auxiliary trolley for installing tunnel steel arch frames on one side of the steel arch frame (1) are arranged at different heights, and the two abutting ends (301) and the endpoints of the steel arch frame (1) on the ground form a three-point arc connection for positioning. Step S3: Gradually splice the superior arc area (3) of the steel arch frame (1) to the top of the arch of the steel arch frame (1), and use the abutment end (301) to bear the load, and gradually adjust through the lifting cylinder (410) to ensure that the abutment positioning mechanism (30) can still maintain three-point positioning after backtracking; In addition, scaffolding or lifting work vehicles may be necessary. Step S4: After the splicing endpoints of the adjacent superior arc zone (3) and inferior arc zone (4) are completed, the abutment end (301) will bear the full weight and be adjusted by the lifting cylinder (410); When the positioning mechanism (30) is stuck with the steel arch frame (1), the fault can be relieved by pulling it manually with a rope or by connecting a tensioning machine at different angles.

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