Pre-assembly trolley for primary support steel frame of subsurface tunnel

Abstract

The utility model belongs to the technical field of tunnel construction, and discloses a subsurface tunnel primary support steel frame pre-assembly trolley which comprises a trolley support, a connecting seat is fixed at the bottom end of the trolley support, a clamping limiting mechanism is fixed at the top end of a lifting mechanism, and an adjusting mechanism is fixed on the side wall of the top end of the trolley support. Through cooperation of a bidirectional motor, a first connecting rod and a first bevel gear, the device can start the bidirectional motor, so that the bidirectional motor drives the first connecting rod and the first bevel gear to rotate during operation, and then the second bevel gear can be driven to rotate during rotation through the shapes of the first bevel gear and the second bevel gear; and then the threaded rod is driven to rotate, so that the threaded rod drives the cantilever beam table to move up and down through the shape of the threaded rod during rotation, a constructor can conveniently move to a steel frame connecting point to perform bolt tightening and welding construction, and the purpose that the constructor can conveniently use the device to adjust the height of the preassembled side face of the steel frame is achieved.

Description

TECHNICAL FIELD

[0001] The utility model belongs to tunnel construction technical field, specifically is a kind of pre-assembled trolley of cut-and-cover tunnel primary support steel frame. BACKGROUND

[0002] When traditional primary support steel frame is constructed, arch unit is assembled by manpower at working face, at most two units are connected, after the bolt connection of all segment steel frames is completed, the position of the whole steel arch is adjusted, steel frame and anchor rod are connected firmly, accurate positioning is carried out, steel frame is installed vertically in line with center line, after positioning is completed, steel frame connecting reinforcement and steel mesh welding are carried out.

[0003] After the excavation of the prior art cut-and-cover tunnel is completed, mechanical equipment is withdrawn, support workbench is moved to working face, and steel frame installation construction is started in segments, excavation and support cycle operation time is relatively independent, and the cycle time is long; There are many circumferential steel frame connection nodes when steel frame is assembled, it is difficult to meet the verticality of circumferential segmented steel frame in vertical direction, and the more connection nodes, the more serious linear deviation, which directly affects the construction quality; The working space of working face is small during primary support construction, and the working cycle of workers is long under the condition of no support, and the safety risk is high.

[0004] It is necessary to ensure the quality of steel frame connection and installation, improve the overall construction quality and construction efficiency, make the connection of circumferential segmented steel frame more simple and convenient, not affected by the number of connection nodes and the small space of working face; The pre-assembly process is not affected by the excavation of working face, so that the device can not only reduce the process cycle period and ensure the safety of construction, but also ensure the verticality in vertical direction through simple limiting device; Steel frame is conveniently laid through telescopic jacking device. UTILITY MODEL CONTENTS

[0005] To solve the problems in the above background art, the utility model provides a cut-and-cover tunnel primary support steel frame pre-assembly trolley.

[0006] To achieve the above purpose, the utility model provides the following technical scheme: a cut-and-cover tunnel primary support steel frame pre-assembly trolley, including trolley support, the bottom end of the trolley support is movably connected with connecting seat, the inner wall of the connecting seat is rotatably connected with walking wheel, the inside of the trolley support is provided with lifting mechanism, the top end of the lifting mechanism is fixed with clamping limiting mechanism, the top end of the trolley support is provided with contraction groove, the top end of the trolley support is provided with jacking mechanism, the side wall of the top end of the trolley support is fixed with adjusting mechanism, the top end of the connecting seat is provided with fine adjustment mechanism.

[0007] The lifting mechanism comprises a bidirectional motor, a first connecting rod and a first bevel gear, the bottom end of the bidirectional motor is fixed inside the trolley support, the side wall of the bidirectional motor is fixed with the first connecting rod, the side wall of the first connecting rod is fixed with the first bevel gear, the bottom end of the first bevel gear is provided with a second bevel gear, the bottom end of the second bevel gear is fixed with a threaded rod, and the outer wall of the threaded rod is threadedly connected with a suspension beam table.

[0008] Preferably, the first connecting rod is provided with two groups of mounting on the output end of the bidirectional motor, and the first connecting rod is symmetrically distributed about the central axis of the bidirectional motor.

[0009] Preferably, the outer wall of the first bevel gear is provided with a plurality of groups of teeth, the outer wall of the second bevel gear is provided with a plurality of groups of teeth, the first bevel gear and the second bevel gear are meshed, and the second bevel gear is rotatably connected to the inner wall of the trolley support.

[0010] Preferably, the inner wall of the suspension beam table is provided with a sliding groove, the inner wall of the suspension beam table is close to the outer wall of the trolley support, and the suspension beam table and the trolley support are slidingly connected.

[0011] Preferably, the jacking mechanism comprises a first hydraulic cylinder, a top plate and a limiting groove, the top end of the first hydraulic cylinder is fixed inside the trolley support, the top end of the first hydraulic cylinder is fixed with the top plate, the side wall of the top plate is provided with the limiting groove, the top end of the trolley support is slidingly connected with a limiting plate, the side wall of the limiting plate is fixed with a first limiting rod, the side wall of the limiting plate is provided with a return spring, and the top end of the limiting plate is fixed with a limiting hole.

[0012] Preferably, the inner wall of the top plate is close to the inner wall of the trolley support, the top plate and the trolley support are slidingly connected, the limiting groove is provided with two groups of symmetrically distributed about the central axis of the top plate, and the limiting plate is provided with two groups of symmetrically distributed about the central axis of the trolley support.

[0013] Preferably, the first limiting rod is provided with two groups of symmetrically distributed about the central axis of the limiting plate, the return spring is used for extruding the limiting plate and keeping the tendency of moving to the limiting groove, and the return spring is provided with two groups of symmetrically distributed about the central axis of the limiting plate.

[0014] Preferably, the clamping limiting mechanism comprises a second hydraulic cylinder, a connecting disc and a mounting block, the second hydraulic cylinder is fixed at the top end of the suspension beam table, the side wall of the second hydraulic cylinder is fixed with the connecting disc, the side wall of the connecting disc is fixed with the mounting block, the outer wall of the mounting block is fixed with a servo motor, the output end of the servo motor is provided with a first gear, the first gear is rotationally connected to the inner wall of the mounting block, the outer wall of the first gear is engaged with a second gear, the inner wall of the second gear is fixed with a bidirectional screw rod, the bidirectional screw rod is rotationally connected to the inner wall of the mounting block, the inner wall of the mounting block is fixed with a second limiting rod, the outer wall of the bidirectional screw rod is threadedly connected with a clamping arm, and the outer wall of the second limiting rod is rotationally connected with the clamping arm.

[0015] Preferably, the adjusting mechanism comprises a sliding rail block, a third hydraulic cylinder and a mounting plate, the sliding rail block is fixed at the side wall of the top end of the trolley support, the top end of the sliding rail block is fixed with the third hydraulic cylinder, and the bottom end of the third hydraulic cylinder is fixed with the mounting plate; the mounting plate and the sliding rail block are in sliding connection, and the bottom end of the mounting plate is fixed with a second hydraulic cylinder.

[0016] Preferably, the fine adjustment mechanism comprises a fourth hydraulic cylinder, a connecting groove and a mounting rail, the fourth hydraulic cylinder is fixed at the top end of the connecting seat, the bottom end of the trolley support is provided with the connecting groove, and the top end of the connecting seat is provided with the mounting rail.

[0017] Compared with the prior art, the device has the advantages that:

[0018] The device can drive the first connecting rod and the first bevel gear to rotate by starting the bidirectional motor, and then drive the second bevel gear to rotate through the shape of the first bevel gear and the second bevel gear when rotating, and then drive the threaded rod to rotate, so that the threaded rod drives the suspension beam table to move up and down through its shape when rotating, so that the construction personnel can conveniently move to the steel frame connecting point to tighten the bolt and perform welding construction, thereby achieving the purpose of conveniently adjusting the side height of the steel frame by the construction personnel using the device.

[0019] The utility model discloses a first hydraulic cylinder, roof, the cooperation between the limiting groove makes device can pass through the start of first hydraulic cylinder, makes first hydraulic cylinder drive roof lifting at the top, and the steel frame is supported to the top through roof, and the worker can more conveniently weld steel frame, can insert first limiting rod into limiting groove before and after welding, makes the position of roof stay in the plane of trolley support top, prevents the influence when working to the worker, when needing jacking, through two reset springs can make two limiting plates close and separate from the contact of limiting groove, and then the lock bar is inserted into two limiting holes and can fix two limiting plates and make roof can normally operate, to this to reach the purpose that the device is convenient for the storage of jacking mechanism and guarantees that the device will not influence the worker work.

[0020] The utility model discloses a second hydraulic cylinder, the cooperation between connecting disc, mounting block makes device can pass through the start of servo motor drive first gear rotation and then through the shape of first gear drive second gear and bidirectional screw rotation, makes bidirectional screw through the thread of both ends in rotation and drive two sets of clamping arms move in opposite directions, and then can hold steel frame, add second limiting rod, and second limiting rod can improve the stability of clamping arm holding, guarantee its holding strength, after holding steel frame, start second hydraulic cylinder, and second hydraulic cylinder pushes connecting disc and the assembly of this end, makes steel frame contact to the side of tunnel and fixes, and then is welded by the worker, to this to reach the purpose that the device is convenient for the preinstallation of steel frame tunnel side limit.

[0021] The utility model discloses a sliding rail block, the cooperation between third hydraulic cylinder, mounting plate makes device can pass through the start of third hydraulic cylinder and push mounting plate and the second hydraulic cylinder of fixed on mounting plate and so on assembly about the slotting of sliding rail block in vertical direction and lift, can make device more one set of fulcrum and resist steel frame side, can guarantee the stability of support, to improve the effect that device whole steel frame carries out tunnel side preinstallation limit, guarantee its installation is more stable.

[0022] The utility model discloses a fourth hydraulic cylinder, the cooperation between connecting groove, mounting rail makes device can pass through walking wheel and fix the position of device whole and after preinstalling steel frame, because there is some construction deviation in tunnel and can not fine tune the position of steel frame after holding, start fourth hydraulic cylinder, and fourth hydraulic cylinder can push trolley support and then drive trolley support and the assembly of trolley support on installation move through connecting groove and mounting rail, to reach the purpose that device whole steel frame carries out tunnel side preinstallation limit fine tuning. ACCURACY OF DRAWINGS

[0023] Figure 1 It is whole structure schematic diagram of the utility model discloses;

[0024] Figure 2 It is the whole right view structural schematic diagram of the utility model;

[0025] Figure 3 It is the lifting mechanism structural schematic diagram of the utility model;

[0026] Figure 4 It is the lifting mechanism right view structural schematic diagram of the utility model;

[0027] Figure 5 It is the jacking mechanism structural schematic diagram of the utility model;

[0028] Figure 6 It is the Figure 5 It is the local section enlarged structural schematic diagram of A place in the utility model;

[0029] Figure 7 It is the clamping limiting mechanism section structural schematic diagram of the utility model;

[0030] Figure 8 It is the clamping limiting mechanism plan view structural schematic diagram of the utility model;

[0031] Figure 9 It is the adjusting mechanism structural schematic diagram of the utility model;

[0032] Figure 10 It is the Figure 2 It is the local section enlarged structural schematic diagram of B place in the utility model.

[0033] In the drawing: 1, trolley support; 2, connecting seat; 3, walking wheel; 4, lifting mechanism; 401, bidirectional motor; 402, first connecting rod; 403, first bevel gear; 404, second bevel gear; 405, threaded rod; 406, suspension beam table; 5, contraction groove; 6, jacking mechanism; 601, first hydraulic cylinder; 602, top plate; 603, limiting groove; 604, limiting plate; 605, first limiting rod; 606, reset spring; 607, limiting hole; 7, clamping limiting mechanism; 701, second hydraulic cylinder; 702, connecting disc; 703, mounting block; 704, servo motor; 705, first gear; 706, second gear; 707, bidirectional screw rod; 708, second limiting rod; 709, clamping arm; 8, adjusting mechanism; 801, sliding rail block; 802, third hydraulic cylinder; 803, mounting plate; 9, fine adjustment mechanism; 901, fourth hydraulic cylinder; 902, connecting groove; 903, mounting rail. DETAILED DESCRIPTION

[0034] The technical solutions in the embodiments of the utility model will be clearly and completely described below with reference to the drawings in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, rather than all the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by those skilled in the art without creative labor fall within the scope of the utility model.

[0035] As shown in Figures 1 to 10 The utility model provides a kind of pre-assembly trolley of tunnel primary support steel frame, including trolley support 1, the bottom of trolley support 1 is fixed with connecting seat 2, the inner wall of connecting seat 2 is rotatably connected with walking wheel 3, the inside of trolley support 1 is provided with lifting mechanism 4, the top of lifting mechanism 4 is fixed with clamping limiting mechanism 7, the top of trolley support 1 is equipped with shrinkage slot 5, the top of trolley support 1 is installed with jacking mechanism 6, the top side wall of trolley support 1 is fixed with adjusting mechanism 8, the top of connecting seat 2 is installed with fine adjustment mechanism 9.

[0036] The above scheme is adopted: trolley support 1 is formed by steel frame splicing, and the position of the device can be adjusted more labor-saving by walking wheel 3.

[0037] As shown in Figures 1 to 10 Clamping limiting mechanism 7 includes second hydraulic cylinder 701, connecting disc 702 and mounting block 703, second hydraulic cylinder 701 is fixed at the top of suspension beam table 406, the side wall of second hydraulic cylinder 701 is fixed with connecting disc 702, the side wall of connecting disc 702 is fixed with mounting block 703, the outer wall of mounting block 703 is fixed with servo motor 704, the output end of servo motor 704 is installed with first gear 705, first gear 705 is rotatably connected to the inner wall of mounting block 703, the outer wall of first gear 705 is meshed with second gear 706, the inner wall of second gear 706 is fixed with bidirectional screw rod 707, bidirectional screw rod 707 is rotatably connected to the inner wall of mounting block 703, the inner wall of mounting block 703 is fixed with second limiting rod 708, the outer wall of bidirectional screw rod 707 is threadedly connected with clamping arm 709, the outer wall of second limiting rod 708 is rotatably connected with clamping arm 709.

[0038] Adopting the above scheme: by starting the servo motor 704 to drive the first gear 705 to rotate, and then driving the second gear 706 and the bidirectional screw rod 707 to rotate through the shape of the first gear 705, so that the bidirectional screw rod 707 drives the two groups of clamping arms 709 to move oppositely through the threads at both ends, thereby being able to clamp the steel frame, and the second limiting rod 708 can improve the stability of the clamping of the clamping arm 709, and ensure the strength of the clamping, after clamping the steel frame, start the second hydraulic cylinder 701, the second hydraulic cylinder 701 pushes the connecting disc 702 and the components at that end, so that the steel frame contacts the side of the tunnel to be fixed, and then welded by the worker.

[0039] As shown in Figures 1 to 10 The jacking mechanism 6 includes a first hydraulic cylinder 601, a top plate 602 and a limiting groove 603, the first hydraulic cylinder 601 is fixed at the top end inside the trolley support 1, the top end of the first hydraulic cylinder 601 is fixed with the top plate 602, the side wall of the top plate 602 is provided with the limiting groove 603, the top end of the trolley support 1 is slidingly connected with the limiting plate 604, the inner wall of the top plate 602 is close to the inner wall of the trolley support 1, the top plate 602 and the trolley support 1 are slidingly connected, the limiting groove 603 is provided with two groups of symmetrically distributed about the central axis of the top plate 602, and the limiting plate 604 is provided with two groups of symmetrically distributed about the central axis of the trolley support 1.

[0040] As shown in Figures 1 to 10 The side wall of the limiting plate 604 is fixed with the first limiting rod 605, the side wall of the limiting plate 604 is provided with the reset spring 606, the top end of the limiting plate 604 is fixed with the limiting hole 607, the first limiting rod 605 is provided with two groups of symmetrically distributed about the central axis of the limiting plate 604, the reset spring 606 is used for pressing the limiting plate 604 and keeping the tendency of the limiting plate 604 moving towards the limiting groove 603, and the reset spring 606 is provided with two groups of symmetrically distributed about the central axis of the limiting plate 604.

[0041] Adopting the above scheme: by starting the first hydraulic cylinder 601, the first hydraulic cylinder 601 drives the top plate 602 at the top end to rise and fall, and supports the steel frame at the top end through the top plate 602, so that the worker can more conveniently weld the steel frame, and the first limiting rod 605 can be inserted into the limiting groove 603 before and after welding, so that the position of the top plate 602 stays at the top end of the trolley support 1 to form a plane, preventing the worker from being affected during work, and when jacking is needed, the two groups of limiting plates 604 can be brought close to each other and out of contact with the limiting groove 603 through the two groups of reset springs 606, and then the locking bar can be inserted into the two groups of limiting holes 607 to fix the two groups of limiting plates 604 and enable the top plate 602 to operate normally.

[0042] As shown in Figures 1 to 10As shown, the lifting mechanism 4 comprises a bidirectional motor 401, a first connecting rod 402 and a first bevel gear 403, the bidirectional motor 401 is fixed at the bottom end inside the trolley support 1, the side wall of the bidirectional motor 401 is fixed with the first connecting rod 402, the first connecting rod 402 is provided with two groups of output ends mounted on the bidirectional motor 401, the first connecting rod 402 is symmetrically distributed about the central axis of the bidirectional motor 401, the side wall of the first connecting rod 402 is fixed with the first bevel gear 403, the bottom end of the first bevel gear 403 is provided with the second bevel gear 404, the outer wall of the first bevel gear 403 is provided with a plurality of groups of teeth, the outer wall of the second bevel gear 404 is provided with a plurality of groups of teeth, the first bevel gear 403 and the second bevel gear 404 are meshed and connected, the second bevel gear 404 is rotatably connected to the inner wall of the trolley support 1, the bottom end of the second bevel gear 404 is fixed with the threaded rod 405, the outer wall of the threaded rod 405 is threadedly connected with the suspension beam table 406, the inner wall of the suspension beam table 406 is provided with a sliding groove, the inner wall of the suspension beam table 406 is close to the outer wall of the trolley support 1, and the suspension beam table 406 and the trolley support 1 are slidably connected.

[0043] By starting the bidirectional motor 401, the first connecting rod 402 and the first bevel gear 403 are driven to rotate when the bidirectional motor 401 operates, and then the second bevel gear 404 is driven to rotate through the shape of the first bevel gear 403 and the second bevel gear 404 when rotating, and then the threaded rod 405 is driven to rotate, so that the threaded rod 405 drives the suspension beam table 406 to move up and down when rotating through its shape, so that the construction personnel can move to the steel frame connection point for bolt tightening and welding construction.

[0044] As shown in Figures 1 to 10 The adjusting mechanism 8 comprises a sliding rail block 801, a third hydraulic cylinder 802 and a mounting plate 803, the sliding rail block 801 is fixed to the side wall at the top end of the trolley support 1, the third hydraulic cylinder 802 is fixed to the top end of the sliding rail block 801, the mounting plate 803 is fixed to the bottom end of the third hydraulic cylinder 802, the mounting plate 803 and the sliding rail block 801 are slidably connected, and the second hydraulic cylinder 701 is fixed to the bottom end of the mounting plate 803.

[0045] By setting the cooperation between the sliding rail block 801, the third hydraulic cylinder 802 and the mounting plate 803, the device can be lifted in the vertical direction about the slot of the sliding rail block 801 by starting the third hydraulic cylinder 802 to push the mounting plate 803 and the second hydraulic cylinder 701 fixed on the mounting plate 803 and other components, so that the device can have more fulcrums to resist the side of the steel frame, and the stability of the support can be ensured to improve the effect of the device on the tunnel side preloading limiting of the steel frame and ensure more stable installation.

[0046] As shown in Figures 1 to 10As shown, the fine adjustment mechanism 9 comprises a fourth hydraulic cylinder 901, a connecting groove 902 and a mounting rail 903, the fourth hydraulic cylinder 901 is fixed at the top end of the connecting seat 2, the bottom end of the trolley support 1 is provided with the connecting groove 902, and the top end of the connecting seat 2 is provided with the mounting rail 903.

[0047] By adopting the above scheme: after the position of the whole device is fixed by the walking wheel 3 and the steel frame is pre-assembled, some construction deviations exist in the tunnel, so that the position of the clamped steel frame cannot be fine adjusted, the fourth hydraulic cylinder 901 is started, the fourth hydraulic cylinder 901 can push the trolley support 1, and then drive the trolley support 1 and the components mounted on the trolley support 1 to move through the connecting groove 902 and the mounting rail 903.

[0048] The working principle and use process of the utility model: through starting two-way motor 401, make two-way motor 401 run and drive first connecting rod 402 and first bevel gear 403 rotate, further through the shape of first bevel gear 403 and second bevel gear 404 can drive second bevel gear 404 rotate when rotating, further drive threaded rod 405 rotate, make threaded rod 405 rotate through the shape of itself and drive suspension beam platform 406 move up and down, make construction personnel can be conveniently moved to steel frame connecting point for screw bolt tightening and welding construction, start first hydraulic cylinder 601, make first hydraulic cylinder 601 drive the lifting of top plate 602 at the top, and support the steel frame at the top through top plate 602, make the worker more convenient to weld the steel frame, can insert first limiting rod 605 into limiting groove 603 before and after welding, make the position of top plate 602 stay in the plane formed at the top of trolley support 1, prevent the influence when working, when jacking is needed, two sets of limiting plates 604 can be close and separate from the contact with limiting groove 603 through two sets of reset springs 606, then insert the lock bar into two sets of limiting holes 607 can fix two sets of limiting plates 604 and make top plate 602 can operate normally, drive first gear 705 rotate through starting servo motor 704, further drive second gear 706 and two-way screw rod 707 rotate through the shape of first gear 705, make two-way screw rod 707 drive two sets of clamping arms 709 move oppositely through the thread at both ends when rotating, further can clamp the steel frame, add second limiting rod 708, second limiting rod 708 can improve the stability of clamping arm 709 clamping, ensure the strength of clamping, after clamping the steel frame, start second hydraulic cylinder 701, second hydraulic cylinder 701 drives connecting disc 702 and the assembly at the end, make the steel frame contact the side of the tunnel and fix, then weld by the worker, and the mechanism is also installed on the side wall at the top of trolley support 1, can make the device have one more fulcrum to resist the side of the steel frame, can ensure the stability of support, through the cooperation between slide rail block 801, third hydraulic cylinder 802 and mounting plate 803, make the device can drive mounting plate 803 and second hydraulic cylinder 701 and other assemblies fixed on mounting plate 803 about the slotting of slide rail block 801 in vertical direction, can make the device have one more fulcrum to resist the side of the steel frame, can ensure the stability of support, to improve the effect of the device as a whole on the steel frame preloading limit of the side of the tunnel, ensure that it is installed more stably, after fixing the position of the device as a whole through walking wheel 3 and preloading the steel frame, because there is some construction deviation in the tunnel, the position of the clamped steel frame cannot be fine-tuned, start fourth hydraulic cylinder 901, fourth hydraulic cylinder 901 can drive trolley support 1, further drive trolley support 1 and the assemblies installed on trolley support 1 move through connecting groove 902 and mounting rail 903.

[0049] It is to be noted that, in the present document, relational terms such as first and second and the like can be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Moreover, the terms "comprises", "comprising", or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but can include other elements not expressly listed or inherent to such process, method, article, or apparatus.

[0050] While the embodiments of the present application have been illustrated and described, it will be understood by those skilled in the art that various changes, modifications, substitutions, and alterations can be made therein without departing from the spirit and scope of the application, which is defined by the appended claims and their equivalents.

Claims

1. A preliminary assembly trolley for a primary support steel frame of a tunneling tunnel, comprising a trolley support (1), characterized in that: The bottom end of the trolley support (1) is movably connected with a connecting seat (2), the inner wall of the connecting seat (2) is rotatably connected with a traveling wheel (3), the inside of the trolley support (1) is provided with a lifting mechanism (4), the top end of the lifting mechanism (4) is fixedly provided with a clamping limiting mechanism (7), the top end of the trolley support (1) is provided with a contraction groove (5), the top end of the trolley support (1) is provided with a jacking mechanism (6), the top end side wall of the trolley support (1) is fixedly provided with an adjusting mechanism (8), and the top end of the connecting seat (2) is provided with a fine adjustment mechanism (9). The lifting mechanism (4) comprises a bidirectional motor (401), a first connecting rod (402) and a first bevel gear (403), the bottom end of the inside of the trolley support (1) is fixedly provided with the bidirectional motor (401), the side wall of the bidirectional motor (401) is fixedly provided with the first connecting rod (402), the side wall of the first connecting rod (402) is fixedly provided with the first bevel gear (403), the bottom end of the first bevel gear (403) is provided with a second bevel gear (404), the bottom end of the second bevel gear (404) is fixedly provided with a threaded rod (405), and the outer wall of the threaded rod (405) is threadedly connected with a suspension beam platform (406).

2. The preliminary assembly trolley for the initial support steel frame of the tunneling tunnel according to claim 1, characterized in that: The first connecting rod (402) is provided with two groups of output ends mounted on the bidirectional motor (401), and the first connecting rod (402) is symmetrically distributed about the central axis of the bidirectional motor (401).

3. The preliminary assembly trolley for the initial support steel frame of the tunneling tunnel according to claim 1, characterized in that: The outer wall of the first bevel gear (403) is provided with a plurality of groups of teeth, the outer wall of the second bevel gear (404) is provided with a plurality of groups of teeth, the first bevel gear (403) and the second bevel gear (404) are meshingly connected, and the second bevel gear (404) is rotatably connected to the inner wall of the trolley support (1).

4. The preliminary assembly trolley for the initial support steel frame of the tunneling tunnel according to claim 1, characterized in that: The inner wall of the suspension beam platform (406) is provided with a sliding groove, the inner wall of the suspension beam platform (406) is close to the outer wall of the trolley support (1), and the suspension beam platform (406) and the trolley support (1) are slidably connected.

5. The initial support steel frame pre-assembly trolley for tunneling according to claim 1, characterized in that: The jacking mechanism (6) comprises a first hydraulic cylinder (601), a top plate (602) and a limiting groove (603), the top end of the inside of the trolley support (1) is fixedly provided with the first hydraulic cylinder (601), the top end of the first hydraulic cylinder (601) is fixedly provided with the top plate (602), the side wall of the top plate (602) is provided with the limiting groove (603), the top end of the trolley support (1) is slidably connected with a limiting plate (604), the side wall of the limiting plate (604) is fixedly provided with a first limiting rod (605), the side wall of the limiting plate (604) is provided with a return spring (606), and the top end of the limiting plate (604) is fixedly provided with a limiting hole (607).

6. The initial support steel frame pre-assembly trolley for tunneling according to claim 5, characterized in that: The inner wall of the top plate (602) is close to the inner wall of the trolley support (1), the top plate (602) and the trolley support (1) are slidably connected, the limiting groove (603) is provided with two groups of symmetrically distributed limiting grooves about the central axis of the top plate (602), and the limiting plate (604) is provided with two groups of symmetrically distributed limiting plates about the central axis of the trolley support (1).

7. The initial support steel frame pre-assembly trolley for tunneling according to claim 5, characterized in that: The first limiting rod (605) is provided with two groups of symmetric distribution about the central axis of the limiting plate (604), the reset spring (606) is used for extruding the limiting plate (604) and making it keep the tendency of moving to the limiting groove (603), and the reset spring (606) is provided with two groups of symmetric distribution about the central axis of the limiting plate (604).

8. The initial support steel frame pre-assembly trolley for tunneling according to claim 1, characterized in that: The clamping limiting mechanism (7) comprises a second hydraulic cylinder (701), a connecting disc (702) and a mounting block (703), the second hydraulic cylinder (701) is fixed at the top end of the cantilever table (406), the side wall of the second hydraulic cylinder (701) is fixed with the connecting disc (702), the side wall of the connecting disc (702) is fixed with the mounting block (703), the outer wall of the mounting block (703) is fixed with a servo motor (704), the output end of the servo motor (704) is provided with a first gear (705), the first gear (705) is rotatably connected to the inner wall of the mounting block (703), the outer wall of the first gear (705) is meshed with a second gear (706), the inner wall of the second gear (706) is fixed with a bidirectional screw rod (707), the bidirectional screw rod (707) is rotatably connected to the inner wall of the mounting block (703), the inner wall of the mounting block (703) is fixed with a second limiting rod (708), the outer wall of the bidirectional screw rod (707) is threadedly connected with a clamping arm (709), and the outer wall of the second limiting rod (708) is rotatably connected with the clamping arm (709).

9. The initial support steel frame pre-assembly trolley for tunneling according to claim 1, characterized in that: The adjusting mechanism (8) comprises a sliding rail block (801), a third hydraulic cylinder (802) and a mounting plate (803), the sliding rail block (801) is fixed to the side wall of the top end of the trolley support (1), the top end of the sliding rail block (801) is fixed with the third hydraulic cylinder (802), the bottom end of the third hydraulic cylinder (802) is fixed with the mounting plate (803), the mounting plate (803) and the sliding rail block (801) are in sliding connection, and the bottom end of the mounting plate (803) is fixed with the second hydraulic cylinder (701).

10. The initial support steel frame pre-assembly trolley for tunneling according to claim 1, characterized in that: The fine adjustment mechanism (9) comprises a fourth hydraulic cylinder (901), a connecting groove (902) and a mounting rail (903), the fourth hydraulic cylinder (901) is fixed at the top end of the connecting seat (2), the bottom end of the trolley support (1) is provided with the connecting groove (902), and the top end of the connecting seat (2) is provided with the mounting rail (903).

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