A steel arch installation device for tunnel construction

Abstract

The application belongs to the technical field of tunnel construction, and specifically relates to a steel arch installation device for tunnel construction, which comprises a conveying mechanism, a butt joint mechanism and a lifting mechanism. The composite mechanism of the hydraulic arm, the gear rack and the trajectory plate is adopted through the transfer system, the sliding path control of the lifting swing arm along the trajectory plate is adopted, three-dimensional accurate transfer of the material piece is realized through vertical lifting and then horizontal transfer, manual carrying error is avoided, the material piece is adsorbed by the magnetic suction sliding seat of the butt joint mechanism, the linkage of the arc-shaped sliding groove of the rotating plate and the inclined sliding groove of the inclined plate is combined, the horizontal rotation of the material piece is driven by the driving support connecting rod, and the angle adjustment requirement of the arc-shaped steel arch is met.

Description

TECHNICAL FIELD

[0001] The application belongs to the technical field of tunnel construction, and particularly relates to a steel arch installation device for tunnel construction. BACKGROUND

[0002] The steel arch support is a rigid support system formed by welding or cold bending process to make the steel into an arch structure and form a composite lining with the anchor shotcrete. It is mainly applied to shallow tunnel, broken surrounding rock and expansive rock soil and other geological conditions of complex underground engineering, and realizes stable support by sharing the surrounding rock pressure and inhibiting the expansion of the plastic zone.

[0003] In the prior art, the steel arch installation faces multidimensional risks: the steel arch is usually installed near the excavation surface, and workers need to perform high-altitude operation on the temporary platform, ladder or arch itself, which has a falling risk; in addition, in the prior art, the position is adjusted manually, which not only brings inconvenience to the workers and increases the labor intensity, but also is not conducive to improving the work efficiency and has a great safety risk; the arch unit is usually heavy and large in size, and is transported, hoisted and spliced in the traditional way, which is easy to slip and collide, and poses a threat to the personnel below. SUMMARY

[0004] In view of the above problems, the application provides a steel arch installation device for tunnel construction to overcome the defects of the prior art.

[0005] The technical scheme adopted by the application is as follows: the application provides a steel arch installation device for tunnel construction, which comprises a transportation mechanism, a butt joint mechanism and a lifting mechanism. The transportation trolley runs on the tunnel track. The transportation mechanism is arranged at the rear end of the transportation trolley and is used for automatically receiving, conveying and positioning the steel arch material. The butt joint mechanism is arranged at the outer end of the middle part of the transportation trolley and is used for receiving the material from the transportation mechanism and adjusting the horizontal position and rotating the angle of the material to realize accurate hole alignment with the main steel arch. The lifting mechanism is arranged at the front end of the transportation trolley and is used for receiving and vertically lifting the main steel arch material and providing stable support during butt joint to assist in completing the high-altitude butt joint of the main steel arch and the side steel arch.

[0006] Among them, the transportation mechanism includes a transportation base, a conveyor belt, a transportation unit, a clutch, a transfer system and an intercepting arm. The transportation base is arranged at the rear end of the transportation trolley as the installation base of the entire transportation mechanism. The conveyor belt is arranged above the transportation base for carrying and horizontally transporting steel arch frame materials. The transportation unit is arranged above the transportation base. The clutch is transmission-connected to the output end of the transportation unit, and the output end of the clutch is transmission-connected to the conveyor belt. The transfer system is arranged above the transportation base for accurately grasping and three-dimensionally transferring the material pieces on the conveyor belt to the docking mechanism or lifting mechanism after being triggered. The intercepting arm is arranged above the transportation base.

[0007] Furthermore, a contact switch is provided on the side wall at the top of the intercepting arm, which is used to send a signal when the material piece touches the intercepting arm, triggering the clutch to cut off power and start the transfer system.

[0008] Furthermore, the transfer system includes a transfer hydraulic arm, a synchronous push arm, a carrying arm, a carrying claw, a slide rod, a lifting track plate, a lifting tumble arm and a lifting shaft. The transfer hydraulic arm is arranged above the transport base and serves as the main power source of the transfer system to provide linear telescopic movement. The synchronous push arm is fixedly connected to the telescopic end of the transfer hydraulic arm. The lifting track plate is arranged on the side wall of the conveyor belt base. The carrying arm is slidably arranged on the lifting track plate. The carrying claw is slidably arranged on the carrying arm. The slide rod is passed through the carrying claw. The lifting shaft is rotatably arranged on the lifting track plate. The lifting tumble arm is fixedly connected to one end of the lifting shaft.

[0009] Among them, the sliding rod is slidably connected to the lifting track plate and the lifting rotating arm at the same time, realizing the core connection mode in which the carrying claw moves according to a predetermined three-dimensional trajectory, ensuring that the movement is precise and controllable.

[0010] Furthermore, a lifting gear is provided at one end of the lifting shaft, a lifting rack is slidably provided in the base of the conveyor belt, the lifting rack is meshed and connected with the lifting gear, and the end of the lifting rack is fixedly connected to the synchronous push arm.

[0011] As a further preferred embodiment of the present application, the butt joint mechanism is provided with two groups, one on each side of the transport trolley, for independently operating the butt joint of the two side steel arch materials, the butt joint mechanism comprising a butt joint base, a butt joint sliding groove, a magnetic sliding seat, a support connecting rod, a side butt joint plate, a rotating plate, an inclined plate, a butt joint rotating shaft and a butt joint motor, the butt joint base being arranged at the outer end of the middle part of the transport trolley, the butt joint sliding groove being arranged above the butt joint base, the magnetic sliding seat being slidingly arranged in the butt joint sliding groove for adsorbing and temporarily fixing the lower end of the side steel arch material and being horizontally slidable in the sliding groove for preliminary horizontal position adjustment, the lower end of the support connecting rod being fixedly connected with the magnetic sliding seat, the side butt joint plate being rotatably connected with the upper end of the support connecting rod, the rotating plate being slidingly arranged above the butt joint base, the butt joint rotating shaft being rotatably arranged in the butt joint base, the butt joint motor being arranged on the butt joint base, the butt joint rotating shaft being drivingly connected with the output end of the butt joint motor, and the butt joint rotating shaft being meshingly connected with the rotating plate.

[0012] The rotating plate is provided with an arc-shaped sliding groove, the inclined plate is provided with an inclined sliding groove, and the upper end of the support connecting rod is slidingly connected with the arc-shaped sliding groove and the inclined sliding groove, thereby realizing the core of the double-sliding-groove constraint mechanism of the rotating movement of the material in the horizontal plane and ensuring stable movement and compliance with the predetermined angle.

[0013] Further, the lifting mechanism comprises a lifting base, a main lifting arm, a lifting limiting arm, a lifting synchronous arm, a lifting joint, a lifting butt joint plate, a lifting hydraulic arm and a support bar, the lifting base being arranged at the front end of the transport trolley, the lower end of the main lifting arm being slidingly connected with the lifting base, the lower end of the lifting limiting arm being rotatably connected with the lifting base, the upper end of the lifting limiting arm being rotatably connected with the main lifting arm, the lower end of the lifting synchronous arm being rotatably connected with the lifting limiting arm, the lifting joint being rotatably connected with the upper end of the lifting synchronous arm and the upper end of the main lifting arm at the same time, the lifting butt joint plate being rotatably arranged on the lifting joint, the main lifting arm, the lifting limiting arm, the lifting synchronous arm and the lifting joint forming a parallelogram mechanism to ensure that the lifting joint and the lifting butt joint plate maintain a horizontal posture during lifting, the lifting hydraulic arm being arranged on the lifting base, the lower end of the main lifting arm being rotatably connected with the telescopic end of the lifting hydraulic arm, and the support bar being arranged on the lifting base.

[0014] The steel arch mounting device for tunnel construction has the following advantages:

[0015] (1) Automatic material transfer: through the linkage design of the transport belt, the intercepting arm and the contact switch, automatic conveying, accurate parking and triggering of the steel arch material are realized, and manual intervention is reduced.

[0016] (2) Efficient and accurate positioning and transfer, the transfer system adopts a composite mechanism of hydraulic arm, rack and pinion and trajectory plate, through the control of the sliding path of the lifting swing arm along the trajectory plate, realizes the three-dimensional accurate transfer of the material piece by first vertical lifting and then horizontal transfer, and avoids manual handling errors;

[0017] (3) Multi-degree-of-freedom docking adjustment, the docking mechanism uses a magnetic slide to adsorb the material piece, combined with the linkage of the arc-shaped sliding groove of the rotating plate and the inclined sliding groove of the inclined plate, drives the support link to rotate the material piece horizontally, and meets the angle adjustment requirements of the arc-shaped steel arch;

[0018] (4) Self-adaptive lifting stability system, the lifting mechanism is hinged and linked through the main lifting arm, the limiting arm and the synchronous arm, keeps the vertical lifting of the lifting docking plate when the lifting hydraulic arm is pushed, prevents the material piece from tilting, and provides additional support to ensure the lifting stability;

[0019] (5) Electromagnetic auxiliary positioning technology, the magnetic slide, the side docking plate and the lifting docking plate are all integrated with electromagnets, which adsorb and fix the material piece during transportation and docking, and ensure that the steel arch does not shift or fall off during high-altitude operation;

[0020] (6) Synchronous linkage control efficiency, the lifting rack is rigidly connected with the transfer hydraulic arm, so that the gear rotation, swing of the swing arm and movement of the carrying claw are synchronous, and the complete process of taking material-lifting-transferring-discharging can be completed by single hydraulic driving. BRIEF DESCRIPTION OF DRAWINGS

[0021] Figure 1 A structure schematic view of a steel arch mounting device for tunnel construction is proposed for the present application;

[0022] Figure 2 It is a top view of the transportation mechanism;

[0023] Figure 3 It is a structure schematic view of the transfer system;

[0024] Figure 4 It is a connection relationship diagram of the carrying arm and the carrying claw;

[0025] Figure 5 It is a connection relationship diagram of the lifting trajectory plate and the lifting swing arm;

[0026] Figure 6 It is a connection relationship diagram of the lifting gear and the lifting rack;

[0027] Figure 7 It is a structure schematic view of the docking mechanism;

[0028] Figure 8 It is a structure schematic view of the docking mechanism carrying the material piece;

[0029] Figure 9Structure diagram of the docking mechanism when rotating the material piece;

[0030] Figure 10 Partial structure explosion diagram of the docking mechanism;

[0031] Figure 11 Transmission diagram of the rotating plate;

[0032] Figure 12 Structure diagram of the lifting mechanism.

[0033] 1, transport mechanism, 2, docking mechanism, 3, lifting mechanism, 4, transport trolley, 5, material piece, 101, transport base, 102, transport belt, 103, transport unit, 104, clutch, 105, transfer system, 106, intercepting arm, 107, contact switch, 108, transfer hydraulic arm, 109, synchronous push arm, 110, carrying arm, 111, carrying claw, 112, sliding rod, 113, lifting track plate, 114, lifting rotating arm, 115, lifting rotating shaft, 116, lifting gear, 117, lifting rack, 201, docking base, 202, docking sliding groove, 203, magnetic sliding seat, 204, support connecting rod, 205, side docking plate, 206, rotating plate, 207, inclined plate, 208, docking rotating shaft, 209, docking motor, 210, arc-shaped sliding groove, 211, inclined sliding groove, 301, lifting base, 302, main lifting arm, 303, lifting limiting arm, 304, lifting synchronous arm, 305, lifting joint, 306, lifting docking plate, 307, lifting hydraulic arm, 308, support bar.

[0034] The accompanying drawings are used to provide a further understanding of the present application, and constitute a part of the specification, and are used to explain the present application together with embodiments of the present application, and do not constitute a limitation on the present application. DETAILED DESCRIPTION

[0035] The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings. Obviously, the described embodiments are only a part of the embodiments of the present application, rather than all the embodiments of the present application. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative work fall within the scope of protection of the present application.

[0036] In the description of the present application, it should be understood that the terms "upper", "lower", "front", "back", "left", "right", "top", "bottom", "inner", "outer" and the like indicate the orientation or positional relationship shown in the drawings based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as a limitation on the present application.

[0037] As Figures 1-12 shown, the present application provides a steel arch installation device for tunnel construction, comprising a transport mechanism 1, a docking mechanism 2 and a lifting mechanism 3, a transport trolley 4 running on a tunnel track, the transport mechanism 1 being arranged at the rear end of the transport trolley 4, the docking mechanism 2 being arranged at the outer end of the middle of the transport trolley 4, and the lifting mechanism 3 being arranged at the front end of the transport trolley 4.

[0038] The transport mechanism 1 comprises a transport base 101, a transport belt 102, a transport unit 103, a clutch 104, a transfer system 105 and an intercepting arm 106, the transport base 101 being arranged above the rear end of the transport trolley 4, the transport belt 102 being arranged above the transport base 101, the transport unit 103 being arranged above the transport base 101, the clutch 104 being in transmission connection with the output end of the transport unit 103, the output end of the clutch 104 being in transmission connection with the transport belt 102, the transfer system 105 being arranged above the transport base 101, and the intercepting arm 106 being arranged above the transport base 101; a contact switch 107 is arranged on the side wall of the top end of the intercepting arm 106; the transfer system 105 comprises a transfer hydraulic arm 108, a synchronous push arm 109, a carrying arm 110, a carrying claw 111, a sliding rod 112, a lifting track plate 113, a lifting rotating arm 114 and a lifting rotating shaft 115, the transfer hydraulic arm 108 being arranged above the transport base 101, the synchronous push arm 109 being fixedly connected with the telescopic end of the transfer hydraulic arm 108, the lifting track plate 113 being arranged on the side wall of the base of the transport belt 102, the carrying arm 110 being slidingly arranged on the lifting track plate 113, the carrying claw 111 being slidingly arranged on the carrying arm 110, the sliding rod 112 being penetratingly arranged on the carrying claw 111, the lifting rotating shaft 115 being rotatably arranged on the lifting track plate 113, and the lifting rotating arm 114 being fixedly connected with one end of the lifting rotating shaft 115; the sliding rod 112 is in sliding connection with the lifting track plate 113 and the lifting rotating arm 114; one end of the lifting rotating shaft 115 is provided with a lifting gear 116, a lifting rack 117 is slidingly arranged in the base of the transport belt 102, the lifting rack 117 is in meshing connection with the lifting gear 116, and the end of the lifting rack 117 is fixedly connected with the synchronous push arm 109.

[0039] The docking mechanism 2 is provided with two groups, and the docking mechanism 2 comprises a docking base 201, a docking sliding groove 202, a magnetic sliding seat 203, a support connecting rod 204, a side docking plate 205, a rotating plate 206, an inclined plate 207, a docking rotating shaft 208 and a docking motor 209. The docking base 201 is arranged at the outer end of the middle part of the transport trolley 4. The docking sliding groove 202 is arranged above the docking base 201. The magnetic sliding seat 203 is slidingly arranged in the docking sliding groove 202. The lower end of the support connecting rod 204 is fixedly connected with the magnetic sliding seat 203. The side docking plate 205 is rotationally connected with the upper end of the support connecting rod 204. The rotating plate 206 is slidingly arranged above the docking base 201. The docking rotating shaft 208 is rotationally arranged in the docking base 201. The docking motor 209 is arranged on the docking base 201. The docking rotating shaft 208 is drivingly connected with the output end of the docking motor 209. The docking rotating shaft 208 is meshingly connected with the rotating plate 206. The rotating plate 206 is provided with an arc-shaped sliding groove 210. The inclined plate 207 is provided with an inclined sliding groove 211. The upper end of the support connecting rod 204 is slidingly connected with the arc-shaped sliding groove 210 and the inclined sliding groove 211.

[0040] The lifting mechanism 3 comprises a lifting base 301, a main lifting arm 302, a lifting limiting arm 303, a lifting synchronous arm 304, a lifting joint 305, a lifting docking plate 306, a lifting hydraulic arm 307 and a support strip 308. The lifting base 301 is arranged at the front end of the transport trolley 4. The lower end of the main lifting arm 302 is slidingly connected with the lifting base 301. The lower end of the lifting limiting arm 303 is rotationally connected with the lifting base 301. The upper end of the lifting limiting arm 303 is rotationally connected with the main lifting arm 302. The lower end of the lifting synchronous arm 304 is rotationally connected with the lifting limiting arm 303. The upper end of the lifting synchronous arm 304 and the upper end of the main lifting arm 302 are rotationally connected with the lifting joint 305. The lifting docking plate 306 is rotationally arranged on the lifting joint 305. The lifting hydraulic arm 307 is arranged on the lifting base 301. The lower end of the main lifting arm 302 is rotationally connected with the telescopic end of the lifting hydraulic arm 307. The support strip 308 is arranged on the lifting base 301.

[0041] In particular use, the material piece 5 is placed on the conveying belt 102, the conveying set 103 is started, the conveying set 103 drives the conveying belt 102, the material piece 5 is conveyed by the conveying belt 102, when the material piece 5 is conveyed to the intercepting arm 106, the material piece 5 triggers the contact switch 107, the clutch 104 cuts off the transmission between the conveying set 103 and the conveying belt 102, and the transfer system 105 is started; the transfer hydraulic arm 108 is started, the transfer hydraulic arm 108 is extended to push the synchronous push arm 109 to slide, the synchronous push arm 109 drives the lifting rack 117 to slide, the lifting rack 117 drives the lifting gear 116 to rotate, the lifting gear 116 drives the lifting rotating shaft 115 to rotate, the lifting rotating shaft 115 drives the lifting rotating arm 114 to rotate, in the process of rotating of the lifting rotating arm 114, the slide rod 112 is connected with the lifting track plate 113 and the lifting rotating arm 114 to slide, the slide rod 112 is limited by the lifting track plate 113, first drives the clamping claw 111 to lift to hold up the material piece 5, then drives the clamping arm 110 and the clamping claw 111 to slide horizontally, after the material piece 5 is placed on the side butt joint plate 205 and the lifting butt joint plate 306, the clamping claw 111 is lowered to separate from the material piece 5, when the conveying of the material piece 5 is completed, the transfer hydraulic arm 108 is retracted to drive the transfer system 105 to reset, the single conveying is completed, the clutch 104 restores the transmission between the conveying set 103 and the conveying belt 102, the material piece 5 is continuously conveyed by the conveying belt 102; after the material piece 5 is placed on the side butt joint plate 205 and the lifting butt joint plate 306, the magnetic attraction sliding seat 203 is started, the magnetic attraction sliding seat 203 attracts the two ends of the material piece 5, under the support of the side butt joint plate 205 and the lifting butt joint plate 306, the two ends of the material piece 5 are aligned in the horizontal direction, then the magnetic attraction sliding seat 203 is closed, at this time, the lifting hydraulic arm 307 is started first, the lifting hydraulic arm 307 is extended to push the main lifting arm 302, the heavy joint and the lifting butt joint plate 306 are lifted in the vertical direction, the material piece 5 is vertically lifted; then the second material piece 5 is conveyed to the side butt joint plate 205, at this time, the second material piece 5 is rotated to convey to one side (left side), the butt joint motor 209 is started, the butt joint motor 209 drives the butt joint rotating shaft 208 to rotate, the butt joint rotating shaft 208 drives the rotating plate 206 to slide outward, since the support connecting rod 204 is connected with the rotating plate 206 and the inclined plate 207 to slide, when the rotating plate 206 slides outward to the outermost side, the second material piece 5 is rotated by 60 degrees, and the upper end of the second material piece 5 is butt jointed with one end (left end) of the first material piece 5;Finally, the third material piece 5 is transported to the side butt plate 205, at this time the third material piece 5 is supported by the support 308, and the butt joint mechanism 2 on the other side rotates the third material piece 5 to the other side (right side) in the same transmission mode, so that the upper end of the third material piece 5 is butt jointed with the other end (right end) of the first material piece 5; then the bolts between the second, first and third material pieces are fixed, and the lifting hydraulic arm 307 is started again to lift the combined material piece 5, and the material piece 5 is horizontally butt jointed to complete the installation; the magnetic slide 203, the side butt plate 205 and the lifting butt plate 306 are all equipped with electromagnets, and the butt joint mechanism 2 and the lifting mechanism 3 will start the corresponding magnetic slide 203, side butt plate 205 and lifting butt plate 306 when transporting the material piece 5, so as to adsorb the material piece 5 to ensure the stability during butt jointing.

[0042] The above is the specific work flow of the present application, and the subsequent steel arch installation can be carried out by repeating the above operation process.

[0043] It should be noted that in this text, relationship terms such as first and second are only used to distinguish one entity or operation from another, and do not necessarily require or imply any actual relationship or order between the entities or operations.

[0044] Moreover, the term "include", "contain" or any other variant thereof is intended to cover non-exclusive inclusion, so that the process, method, article or equipment including a series of elements not only includes those elements, but also includes other elements not explicitly listed or inherent to such process, method, article or equipment.

[0045] Although the embodiments of the present application have been shown and described, it can be understood by those skilled in the art that various changes, modifications, replacements and variations of the embodiments can be made without departing from the principles and spirits of the present application.

[0046] The present application and its embodiments have been described above, and this description is not restrictive, and the drawings shown are only one of the embodiments of the present application, and the actual structure is not limited thereto.

[0047] In summary, if a person skilled in the art is inspired by it, without departing from the purpose of the present application, without creative design, similar structure and embodiments of the technical scheme can be designed, which shall belong to the protection scope of the present application.

Claims

1. A steel arch mounting device for tunnel construction, characterized by: The invention comprises a transport mechanism (1), a docking mechanism (2) and a lifting mechanism (3), wherein the transport trolley travels on a tunnel track, the transport mechanism (1) is arranged at the rear end of the transport trolley, the docking mechanism (2) is arranged at the middle outer end of the transport trolley, and the lifting mechanism (3) is arranged at the front end of the transport trolley; the transport mechanism (1) comprises a transport base (101) and a transfer system (105), the transport base (101) is arranged at the rear end of the transport trolley, and the transfer system (105) is arranged above the transport base (101); the docking mechanism (2) is provided with two groups, the docking mechanism (2) comprises a docking base (201), a docking chute (202), a magnetic slide seat (203), a supporting connecting rod (204), The side docking plate (205), the rotating plate (206), the oblique plate (207), the docking shaft (208) and the docking motor (209), the docking base (201) is arranged at the outer end of the middle part of the transport trolley, the docking chute (202) is arranged above the docking base (201), the magnetic slide (203) is slidably arranged in the docking chute (202), the lower end of the support link (204) is fixedly connected to the magnetic slide (203), the side docking plate (205) is rotatably connected to the upper end of the support link (204), the rotating plate (206) is slidably arranged above the docking base (201), the docking shaft (208) is rotatably arranged in the docking base (201), and the docking motor (209) is provided with a plurality of connecting rods (204) and a plurality of connecting rods (204). ) is arranged on the docking base (201), the docking shaft (208) is transmission-connected to the output end of the docking motor (209), and the docking shaft (208) is meshedly connected to the rotating plate (206); the transfer system (105) also includes a transfer hydraulic arm (108), a synchronous push arm (109), a carrying arm (110), a carrying claw (111), a slide bar (112), a lifting track plate (113), a lifting arm (114) and a lifting shaft (115), the transfer hydraulic arm (108) is arranged above the transport base (101), the synchronous push arm (109) is fixedly connected to the telescopic end of the transfer hydraulic arm (108), and the lifting track plate (113) is arranged at the bottom of the transport belt (102) On the side wall of the seat, the carrying arm (110) is slidably provided on the lifting track plate (113), the carrying claw (111) is slidably provided on the carrying arm (110), the sliding rod (112) is passed through the carrying claw (111), the lifting shaft (115) is rotatably provided on the lifting track plate (113), the lifting arm (114) is fixedly connected to one end of the lifting shaft (115); a lifting gear (116) is provided at one end of the lifting shaft (115), a lifting rack (117) is slidably provided in the base of the conveyor belt (102), the lifting rack (117) is meshed and connected with the lifting gear (116), and the end of the lifting rack (117) is fixedly connected to the synchronous push arm (109);The rotating plate (206) is provided with an arc-shaped slide groove (210), the oblique plate (207) is provided with an oblique slide groove (211), and the upper end of the supporting connecting rod (204) is slidably connected to the arc-shaped slide groove (210) and the oblique slide groove (211); the sliding rod (112) is slidably connected to the lifting track plate (113) and the lifting rotating arm (114).

2. A steel arch mounting device for tunnel construction according to claim 1, characterized in that: The transport mechanism (1) comprises a transport belt (102), a transport unit (103), a clutch (104) and an intercepting arm (106); the transport belt (102) is arranged above a transport base (101); the transport unit (103) is arranged above the transport base (101); the clutch (104) is transmission-connected to the output end of the transport unit (103); the output end of the clutch (104) is transmission-connected to the transport belt (102); and the intercepting arm (106) is arranged above the transport base (101).

3. The steel arch mounting device for tunnel construction according to claim 1, characterized in that: The lifting mechanism (3) comprises a lifting base (301), a main lifting arm (302), a lifting limit arm (303), a lifting synchronization arm (304), a lifting joint (305), a lifting docking plate (306), a lifting hydraulic arm (307) and a support bar (308); the lifting base (301) is arranged at the front end of the transport trolley; the lower end of the main lifting arm (302) is slidably connected to the lifting base (301); the lower end of the lifting limit arm (303) is slidably connected to the lifting base (301); the upper end of the lifting limit arm (303) is slidably connected to the main lifting arm (302) is rotatably connected, the lower end of the lifting synchronization arm (304) is rotatably connected to the lifting limit arm (303), the lifting joint (305) is rotatably connected to the upper end of the lifting synchronization arm (304) and the upper end of the main lifting arm (302), the lifting docking plate (306) is rotatably arranged on the lifting joint (305), the lifting hydraulic arm (307) is arranged on the lifting base (301), the lower end of the main lifting arm (302) is rotatably connected to the telescopic end of the lifting hydraulic arm (307), and the support bar (308) is arranged on the lifting base (301).

4. The steel arch installation device for tunnel construction according to claim 2, characterized in that: A contact switch (107) is provided on the side wall at the top end of the intercepting arm (106).

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