Multifunctional jib for tunnel reinforcement construction trolley

Abstract

The application relates to a multifunctional hanging arm for a tunnel reinforcing construction trolley, which comprises a trolley body, a track frame fixedly arranged on the trolley body, the track frame being in an arc shape and gradually arching upwards from both sides to the middle, a supporting table slidingly arranged on the track frame, a moving assembly arranged on the supporting table and used for driving the supporting table to slide on the track frame, a supporting arm rotatably arranged on the supporting table, a first driving source arranged on the supporting table and used for driving the supporting arm to rotate, a telescopic arm slidingly arranged on the supporting arm along the length direction of the supporting arm, a first driving piece arranged on the supporting arm and used for driving the telescopic arm to slide, and an abutting piece arranged on the telescopic arm and used for abutting against an arch frame. The application has the effect of improving the construction efficiency during tunnel reinforcing.

Description

Technical Field

[0001] This application relates to the technical field of tunnel reinforcement, and in particular to a multi-functional boom for a tunnel reinforcement construction trolley. Background Technology

[0002] Highway tunnels are passageways specifically designed for automobile transportation. With the development of society, economy, and production, a large number of expressways have emerged, which has placed higher standards on road construction technology, requiring straight routes, gentle gradients, and wide road surfaces. Therefore, tunnels are often used when roads traverse mountainous areas. The construction of tunnels plays an important role in improving the technical condition of highways, shortening travel distances, increasing transport capacity, and reducing accidents.

[0003] Currently, during tunnel construction, it is common practice to install arch frames inside the tunnel to reinforce it and reduce the possibility of tunnel collapse. The arch frames are usually made up of multiple sections. When reinforcing the tunnel, workers first set up a trolley at the reinforcement location and install auxiliary support arms for the arch frames on the trolley. Workers then move the arch frames to the reinforcement location and use the auxiliary support arms to press the arch frames against the tunnel wall. After that, workers use anchor bolts to fix the arch frames to the tunnel wall. The above steps are then repeated to complete the installation of the entire arch frame structure and achieve the reinforcement of the tunnel.

[0004] Since tunnels are typically arched, the direction and position of the trolley need to be constantly adjusted during the installation of the arch frame in order for the auxiliary support arm to support the arch frame smoothly, resulting in low construction efficiency. Summary of the Invention

[0005] In order to improve the construction efficiency of tunnel reinforcement, this application provides a multi-functional boom for tunnel reinforcement construction trolley.

[0006] This application provides a multi-functional boom for a tunnel reinforcement construction trolley, which adopts the following technical solution: A multi-functional boom for a tunnel reinforcement construction trolley includes a trolley body, a track frame fixedly mounted on the trolley body, the track frame being arc-shaped and gradually arching upwards from both sides towards the middle, a support platform slidably mounted on the track frame, a moving component for driving the support platform to slide on the track frame on the support platform, a support arm rotatably mounted on the support platform, a first drive source for driving the support arm to rotate on the support platform, a telescopic arm slidably mounted on the support arm along its length direction, a first drive component for driving the telescopic arm to slide on the support arm, and an abutment component for pressing against the arch frame on the telescopic arm.

[0007] By adopting the above technical solution, the support platform is driven to slide on the track frame by the moving component, so that the support platform moves to the installation position of the arch frame. The support arm is driven to rotate by the first drive source, and the extension and retraction direction of the telescopic arm is adjusted. The telescopic arm is driven to slide by the first drive component, so that the arch frame can be pressed against the tunnel wall by the abutment component. Through the cooperation of the support platform, support arm and telescopic arm, the arch frame at multiple locations in the tunnel can be supported, so that the direction and position of the trolley do not need to be adjusted, which greatly improves the construction efficiency of tunnel reinforcement.

[0008] Optionally, the track frame has a track groove, and a slider is fixedly mounted on the support platform. The slider is slidably mounted in the track groove. The moving component includes a hobbing gear and a second drive source. The hobbing gear is rotatably mounted on the slider. The side wall of the track groove has a toothed groove, and the hobbing gear meshes with the toothed groove. The second drive source is used to drive the hobbing gear to rotate.

[0009] By adopting the above technical solution, the hobbing gear is driven to rotate by the second drive source. While the hobbing gear is rotating, it drives the slider to slide in the track groove through the tooth groove, thereby driving the support platform to slide along the track frame. When the hobbing gear stops rotating, the slider can be limited, increasing the stability of the support platform on the track frame.

[0010] Optionally, the abutment includes a connecting frame, a rotating arm is rotatably mounted on the telescopic arm, a third drive source for driving the rotating arm to rotate is mounted on the telescopic arm, the connecting frame is rotatably mounted on the rotating arm, the rotation axis of the connecting frame is perpendicular to the rotation axis of the rotating arm, a fourth drive source for driving the connecting frame to rotate is mounted on the rotating arm, and a limiting groove is mounted on the connecting frame, the limiting groove being adapted to the arch frame.

[0011] By adopting the above technical solution, the rotating arm is driven to rotate by the third drive source, and the connecting frame is driven to rotate by the fourth drive source, so that the limiting groove is aligned with the arch frame. When the connecting frame is pressed against the arch frame, the arch frame is locked into the limiting groove, which improves the pressing effect on the arch frame and to a certain extent prevents the arch frame from detaching from the connecting frame when it is fixed, thus preventing injury to the workers.

[0012] Optionally, the trolley body is provided with a feeding rack, the feeding rack is provided with a feeding trough for placing the arch frame, and the connecting frame is provided with a clamping mechanism for clamping the arch frame.

[0013] By adopting the above technical solution, the arch frame is placed in the feeding slot of the feeding rack, which makes it easy to fit the arch frame into the limiting slot of the connecting frame. After the arch frame is fitted into the limiting slot of the connecting frame, the arch frame is clamped and fixed by the clamping mechanism. When the support arm rotates, the arch frame can be removed from the feeding rack and moved to the installation position. There is no need for workers to manually carry the arch frame to the installation position, which greatly reduces the labor intensity of the workers.

[0014] Optionally, the clamping mechanism includes a first clamping block, a second clamping block, and a driving assembly. Both sides of the connecting frame are provided with openings communicating with the limiting groove. The first clamping block and the second clamping block are slidably disposed in the two openings respectively. The driving assembly is used to drive the first clamping block and the second clamping block to slide and press against both sides of the arch frame.

[0015] By adopting the above technical solution, after the arch frame is inserted into the limiting groove of the connecting frame, the first clamping block and the second clamping block are driven by the driving component to slide, so that the first clamping block and the second clamping block abut against the side wall of the arch frame respectively, thus fixing the arch frame in the limiting groove.

[0016] Optionally, the drive assembly includes a bidirectional screw and a fifth drive source. The bidirectional screw is rotatably mounted on the connecting frame, and its two ends are threadedly engaged with a first clamping block and a second clamping block, respectively. The fifth drive source is used to drive the bidirectional screw to rotate.

[0017] By adopting the above technical solution, the bidirectional screw is driven to rotate by the fifth drive source. While the bidirectional screw is rotating, the first clamping block and the second clamping block can slide in the direction of moving closer or further away from each other. When the bidirectional screw stops rotating, the first clamping block and the second clamping block can be limited.

[0018] Optionally, anti-slip pads are fixedly provided at the ends of the first clamping block and the second clamping block that are close to each other.

[0019] By adopting the above technical solution, the stability of the first and second clamping blocks when clamping the arch frame is increased by using anti-slip pads.

[0020] Optionally, a buffer block is slidably disposed in the limiting groove. The end of the buffer block away from the connecting frame is adapted to the arch frame, and the buffer block is used to abut against the arch frame. An elastic element is provided on the connecting frame to drive the buffer block to slide away from the connecting frame.

[0021] By adopting the above technical solution, when the arch frame is inserted into the limiting groove of the connecting frame, the inner circular surface of the arch frame abuts against the buffer block. After the arch frame abuts against the tunnel wall, the first clamping block and the second clamping block are released, and the telescopic arm continues to apply pressure to the arch frame. The arch frame slides in the limiting groove and compresses the elastic element. When the arch frame slides a certain distance in the limiting groove, the inner circular surface of the arch frame is completely in contact with the buffer block. At the same time, the outer circular surface of the arch frame is completely in contact with the tunnel wall. Thus, under the condition that the arch frame has sufficient clamping force, the clamping effect of the connecting frame on the arch frame is improved, and the fit effect between the arch frame and the tunnel wall is improved.

[0022] Optionally, the loading rack is slidably mounted on the trolley body in a horizontal direction, and the trolley body is provided with a second driving member for driving the loading rack to slide.

[0023] By adopting the above technical solution, the loading rack is slidably set on the trolley body. When the connecting frame is installing the arch frame, the loading rack is slid away from the arch frame installation position, and then the arch frame to be installed is placed on the loading rack, which further improves the construction efficiency. In addition, when the arch frame is placed on the loading rack, since the loading rack is far away from the arch frame installation position, it can prevent workers from being injured to a certain extent.

[0024] Optionally, a winding wheel is rotatably mounted on the trolley body, and a pull rope is wound on the winding wheel. The pull rope is fixedly connected to the end of the support arm away from the telescopic arm. A servo motor is fixedly mounted on the trolley body, and a worm gear is coaxially fixedly mounted on the output shaft of the servo motor. A worm wheel is coaxially fixedly mounted on the winding wheel, and the worm wheel meshes with the worm gear.

[0025] By adopting the above technical solution, when the arch frame is installed, the servo motor drives the winding wheel to rotate, keeping the pull rope in a taut state, effectively preventing the support arm from suddenly losing force and falling, which could injure workers and increase construction safety.

[0026] According to the above-mentioned multi-functional boom for tunnel reinforcement construction trolley, the implementation process of the boom is as follows: First, place the arch frame on the loading rack (2) so that the arch frame is placed in the material trough of the two supports. The arch frame is supported by the two supports. After the arch frame is placed on the loading rack (2), the two sides of the arch frame are bent upward. The first motor drives the support arm (4) to deflect towards the loading rack (2) so that the connecting frame (44) slides between the two supports. The third motor drives the rotating arm (42) to rotate and the fourth motor drives the connecting frame (44) to rotate to adjust the position of the limiting groove (441). At the same time, the lifting cylinder drives the telescopic arm (41) to slide so that the arch frame enters the limiting groove (441) of the connecting frame (44). Then, the clamping mechanism (6) fixes the arch frame on the connecting frame (44) and drives the support arm (4) to flip upward to remove the arch frame from the loading rack (2). The second motor drives the hobbing gear (51) to rotate. As the hobbing gear (51) rotates, it drives the slider to slide in the track groove (32) through the tooth groove, thereby driving the support platform (31) to slide along the track frame (3). With the cooperation of the support arm (4), the arch frame is moved to the installation position. During the movement, the arch frame is rotated 90° by the rotating arm (42), so that the staff does not need to manually carry the arch frame to the installation position, which greatly reduces the labor intensity of the staff. Then, the arch frame is pressed against the tunnel wall by the lifting cylinder, and the staff can fix the arch frame. With the cooperation of the support platform (31), the support arm (4) and the telescopic arm (41), the arch frame at multiple locations in the tunnel can be supported, so that the direction and position of the trolley do not need to be adjusted, which greatly improves the construction efficiency of tunnel reinforcement. In summary, this application includes at least one of the following beneficial technical effects: 1. The support platform is driven to slide on the track frame by the moving component, so that the support platform is moved to the installation position of the arch frame. The support arm is driven to rotate by the first drive source to adjust the extension and retraction direction of the telescopic arm. The telescopic arm is driven to slide by the first drive component, so that the arch frame can be pressed against the tunnel wall by the abutment component. Through the cooperation of the support platform, support arm and telescopic arm, the arch frame at multiple locations in the tunnel can be supported, so that the direction and position of the trolley need to be adjusted, which greatly improves the construction efficiency of tunnel reinforcement. 2. Place the arch frame in the feeding slot of the feeding rack to facilitate the insertion of the arch frame into the limiting slot of the connecting frame. After the arch frame is inserted into the limiting slot of the connecting frame, the arch frame is clamped and fixed by the clamping mechanism. When the support arm rotates, the arch frame can be removed from the feeding rack and moved to the installation position. There is no need for workers to manually carry the arch frame to the installation position, which greatly reduces the labor intensity of the workers. Attached Figure Description

[0027] Figure 1 This is a schematic diagram of the overall structure of an embodiment of this application; Figure 2 This is a partial structural schematic diagram of an embodiment of this application, mainly used to illustrate the structural schematic diagram of the feeding rack; Figure 3 This is a partial structural schematic diagram of an embodiment of this application, mainly used to illustrate the structural schematic diagram of the support arm; Figure 4 yes Figure 3 Enlarged view of section A; Figure 5 This is a partial structural schematic diagram of an embodiment of this application, mainly used to illustrate the structural schematic diagram of the connecting frame.

[0028] The components include: 1. Trolley body; 11. Wheel frame; 12. Traveling wheel; 13. Directional cylinder; 14. Electric motor; 15. Telescopic outriggers; 16. Lifting cylinder; 17. Loading platform; 171. Guide groove; 172. Second drive component; 18. Winding wheel; 181. Pull rope; 182. Worm gear; 19. Servo motor; 191. Worm; 2. Loading rack; 21. Base frame; 211. Guide block; 3. Track frame; 31. Support platform; 311. First drive source; 32. 4. Track groove; 4. Support arm; 41. Telescopic arm; 411. Third drive source; 42. Rotating arm; 421. Fourth drive source; 43. First drive component; 44. Connecting frame; 441. Limiting groove; 442. Receiving groove; 443. Buffer block; 444. Elastic component; 5. Moving component; 51. Gear hobbing; 52. Second drive source; 6. Clamping mechanism; 61. First clamping block; 62. Second clamping block; 63. Anti-slip pad; 64. Bidirectional screw; 65. Fifth drive source. Detailed Implementation

[0029] The following will be combined with the appendix Figures 1-5 This invention will be described in detail, and the technical solutions in the embodiments of this invention will be clearly and completely described. Obviously, the described embodiments are only some embodiments of this invention, and not all embodiments. Based on the embodiments of this invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this invention.

[0030] This application discloses a multi-functional boom for a tunnel reinforcement construction trolley. (Refer to...) Figure 1 It includes a trolley body 1, a loading rack 2 slidably mounted on the trolley body 1, and a track frame 3 fixedly mounted on the trolley body 1. A support platform 31 is slidably mounted on the track frame 3. A support arm 4 is rotatably mounted on the support platform 31. A telescopic arm 41 is slidably mounted on the support arm 4 along the length direction of the support arm 4. A rotating arm 42 is rotatably mounted on the telescopic arm 41. An abutment for pressing against the arch frame is provided on the rotating arm 42.

[0031] Reference Figure 1 Four wheel frames 11 are rotatably mounted on the bottom wall of the trolley body 1. The four wheel frames 11 are located at the four corners of the trolley body 1, and the rotation axis of the wheel frames 11 is vertical. Each wheel frame 11 is rotatably mounted with a traveling wheel 12. Four directional hydraulic cylinders 13 are hinged to the bottom wall of the trolley body 1. Each directional hydraulic cylinder 13 corresponds to one wheel frame 11. The piston rod of the directional hydraulic cylinder 13 is hinged to the corresponding wheel frame 11. Each wheel frame 11 is fixedly mounted with a motor 14. The output shaft of the motor 14 is coaxially and fixedly connected to the traveling wheel 12.

[0032] Reference Figure 1 The trolley body 1 has four telescopic support legs 15 that slide vertically along the trolley body 1. The four telescopic support legs 15 are located at the four corners of the base and the length of the telescopic support legs 15 is vertical. The trolley body 1 also has four lifting cylinders 16 that are fixedly installed on it. The lifting cylinders 16 correspond one-to-one with the telescopic support legs 15 and the piston rods of the lifting cylinders 16 are fixedly connected to the telescopic support legs 15.

[0033] Reference Figure 1 , 2 The trolley body 1 is fixedly equipped with a loading platform 17. The loading frame 2 includes a base frame 21 and two supports fixedly mounted on the base frame 21. The two supports are spaced apart and have a Y-shaped cross section. Both supports are equipped with a material discharge slot for placing the arch frame. In order to make the arch frame fit smoothly against the tunnel wall, the arch frame is usually set to be arc-shaped. When the arch frame is placed on the loading frame 2, the arch frame is placed into the material discharge slot of the two supports. The arch frame is supported by the two supports. After the arch frame is placed on the loading frame 2, the two sides of the arch frame are bent upward.

[0034] Reference Figure 2 The loading platform 17 has a guide groove 171 opened in the horizontal direction. A guide block 211 is fixedly installed on the bottom wall of the base frame 21. The guide block 211 is slidably installed in the guide groove 171, and the sliding direction of the guide block 211 is parallel to the rotation axis of the support arm 4. Multiple rollers are rotatably installed on the guide block 211. The rollers are rolledly connected to the lower side wall of the guide groove 171. The loading platform 17 is provided with a second driving member 172 for driving the guide block 211 to slide. The second driving member 172 includes a rodless cylinder. The rodless cylinder is fixedly installed in the guide groove 171, and the length direction of the rodless cylinder is parallel to the sliding direction of the guide block 211. The piston of the rodless cylinder is fixedly connected to the guide block 211.

[0035] Reference Figure 3 The track frame 3 is arc-shaped and gradually arches upward from both sides to the middle. The track frame 3 has a track groove 32. A slider is fixedly installed on the support platform 31. The slider is slidably installed in the track groove 32. The slider is arc-shaped and the cross-section of the slider is T-shaped. The track groove 32 is adapted to the slider. The slider is provided with a moving component 5 for driving the slider to slide in the track groove 32.

[0036] Reference Figure 3 The support platform 31 is provided with a first drive source 311 for driving the support arm 4 to rotate. The first drive source 311 includes a first motor, which is fixedly mounted on the support platform 31. The output shaft of the first motor is coaxially fixedly connected to the rotation shaft of the support arm 4. With the rotation shaft of the support arm 4 as the origin, the length of the side of the support arm 4 closer to the telescopic arm 41 is greater than the length of the side of the support arm 4 away from the telescopic arm 41.

[0037] Reference Figure 3 A winding wheel 18 is rotatably mounted on the trolley body 1, and a pull rope 181 is wound on the winding wheel 18. The pull rope 181 is fixedly connected to the end of the support arm 4 away from the telescopic arm 41. A servo motor 19 is fixedly mounted on the trolley body 1, and a worm gear 191 is coaxially fixed on the output shaft of the servo motor 19. A worm wheel 182 is coaxially fixed on the winding wheel 18, and the worm wheel 182 meshes with the worm gear 191. When the support platform 31 slides and the support arm 4 rotates, the servo motor 19 drives the winding wheel 18 to rotate, so that the pull rope 181 is in a slack state, which facilitates the sliding of the support platform 31 or the rotation of the support arm 4. When the arch frame is being installed, the servo motor 19 drives the winding wheel 18 to rotate, so that the pull rope 181 is in a taut state. The worm wheel 182 and worm gear 191 prevent the winding wheel 18 from rotating on its own, thereby effectively avoiding the support arm 4 from losing force due to a sudden power failure of the first motor, which would cause the support arm 4 to fall and injure the workers, thus increasing construction safety.

[0038] Reference Figure 3 , 4The moving component 5 includes a hobbing gear 51 and a second drive source 52. The slider has an internal mounting cavity, and the side wall of the slider has a connecting groove communicating with the mounting cavity. The hobbing gear 51 is rotatably disposed in the connecting groove. The side wall of the track groove 32 has a toothed groove, and the hobbing gear 51 meshes with the toothed groove. The second drive source 52 includes a second motor, which is fixedly disposed in the mounting cavity, and the output shaft of the second motor is coaxially fixedly connected to the hobbing gear 51. The second motor drives the hobbing gear 51 to rotate. While the hobbing gear 51 rotates, it drives the slider to slide in the track groove 32 through the toothed groove, thereby driving the support platform 31 to slide along the track frame 3. When the hobbing gear 51 stops rotating, it can limit the slider and increase the stability of the support platform 31 on the track frame 3.

[0039] Reference Figure 3 , 5 The end of the support arm 4 away from the pull rope 181 is provided with a groove along the length of the support arm 4. The telescopic arm 41 is slidably disposed in the groove. The support arm 4 is provided with a first driving member 43 for driving the telescopic arm 41 to slide. The first driving member 43 includes a push cylinder, which is fixedly disposed on the support arm 4. The piston rod of the push cylinder is fixedly connected to the telescopic arm 41.

[0040] Reference Figure 5 The rotating arm 42 is rotatably mounted at the end of the telescopic arm 41 away from the support arm 4. The abutment includes a connecting frame 44, which is rotatably mounted on the rotating arm 42. The rotation axis of the connecting frame 44 is perpendicular to the rotation axis of the rotating arm 42. The connecting frame 44 is provided with a limiting groove 441, which is adapted to the arch frame. The rotation axis of the rotating arm 42 is horizontally mounted and perpendicular to the length direction of the telescopic arm 41. The connecting frame 44 is rotatably mounted at the end of the rotating arm 42 away from the telescopic arm 41. The rotation axis of the connecting frame 44 is parallel to the length direction of the rotating arm 42. The connecting frame 44 is provided with a clamping mechanism 6 for clamping the arch frame.

[0041] Reference Figure 5 The telescopic arm 41 is provided with a third drive source 411 for driving the rotating arm 42 to rotate. The third drive source 411 includes a third motor, which is fixedly mounted on the telescopic arm 41. The output shaft of the third motor is coaxially and fixedly connected to the rotation shaft of the rotating arm 42.

[0042] Reference Figure 5 The rotating arm 42 is provided with a fourth drive source 421 for driving the connecting frame 44 to rotate. The fourth drive source 421 includes a fourth motor, which is fixedly mounted on the rotating arm 42, and the output shaft of the fourth motor is coaxially and fixedly connected to the rotation shaft of the connecting frame 44.

[0043] The first motor drives the support arm 4 to deflect towards the loading rack 2, causing the connecting frame 44 to slide between the two supports. The third motor drives the rotating arm 42 to rotate, and the fourth motor drives the connecting frame 44 to rotate, adjusting the position of the limiting groove 441. At the same time, the lifting cylinder drives the telescopic arm 41 to slide, so that the arch frame enters the limiting groove 441 of the connecting frame 44. Then, the clamping mechanism 6 fixes the arch frame on the connecting frame 44, drives the support arm 4 to flip upward, removes the arch frame from the loading rack 2, and moves the arch frame to the installation position. During the movement, the arch frame is rotated 90° by the rotating arm 42, so that the arch frame does not need to be manually moved to the installation position by the staff, greatly reducing the labor intensity of the staff.

[0044] Reference Figure 5 The clamping mechanism 6 includes a first clamping block 61, a second clamping block 62, and a drive assembly. Both sides of the connecting frame 44 are provided with openings that communicate with the limiting groove 441. The first clamping block 61 and the second clamping block 62 are slidably disposed in the two openings respectively. Anti-slip pads 63 are fixedly provided at the ends of the first clamping block 61 and the second clamping block 62 that are close to each other. The anti-slip pads 63 are made of rubber, and anti-slip grooves are provided at the ends of the two anti-slip pads 63 that are close to each other.

[0045] Reference Figure 5 The drive assembly includes a bidirectional screw 64 and a fifth drive source 65. The bidirectional screw 64 is rotatably mounted on the connecting frame 44, and its two ends are threadedly engaged with the first clamping block 61 and the second clamping block 62, respectively. The fifth drive source 65 includes a fifth motor, which is fixedly mounted on the connecting frame 44. A drive gear is coaxially fixedly mounted on the output shaft of the fifth motor, and a driven gear is coaxially fixedly mounted on the bidirectional screw 64. The drive gear meshes with the driven gear. After the arch frame is inserted into the limiting groove 441 of the connecting frame 44, the fifth motor drives the bidirectional screw 64 to rotate, causing the first clamping block 61 and the second clamping block 62 to move closer to each other. This causes the anti-slip pads 63 on the first clamping block 61 and the second clamping block 62 to press against the side wall of the arch frame, thus fixing the arch frame in the limiting groove 441.

[0046] Reference Figure 5 A receiving groove 442 is provided on the side wall of the limiting groove 441 near the rotating arm 42. A buffer block 443 is slidably arranged in the receiving groove 442. The end of the buffer block 443 away from the connecting frame 44 is adapted to the inner circular surface of the arch frame. The width of the receiving groove 442 is adapted to the width of the buffer block 443. The two sides of the buffer block 443 are clearance-fitted with the side wall of the receiving groove 442. An anti-detachment block is fixedly provided on the side wall of the buffer block 443. An anti-detachment groove communicating with the receiving groove 442 is provided on the side wall of the receiving groove 442. The anti-detachment block is arranged in the anti-detachment groove.

[0047] Reference Figure 5The receiving groove 442 is provided with an elastic element 444 for driving the buffer block 443 to slide away from the connecting frame 44. The elastic element 444 includes a compression spring, and at least two compression springs are provided. One end of the compression spring is fixedly connected to the bottom wall of the receiving groove 442, and the other end of the compression spring is fixedly connected to the buffer block 443. When the arch frame is inserted into the limiting groove 441 of the connecting frame 44, the inner circular surface of the arch frame abuts against the buffer block 443. After the arch frame abuts against the tunnel wall, the first clamping block 61 and the second clamping block 62 are released, and the telescopic arm 41 continues to apply pressure to the arch frame. The arch frame slides in the limiting groove 441 and compresses the compression spring. When the arch frame slides a certain distance in the limiting groove 441, the inner circular surface of the arch frame is completely in contact with the buffer block 443. At the same time, the outer circular surface of the arch frame is completely in contact with the tunnel wall. Thus, the arch frame has sufficient clamping force, which improves the clamping effect of the connecting frame 44 on the arch frame and improves the fit effect between the arch frame and the tunnel wall.

[0048] The implementation principle of a multi-functional boom for a tunnel reinforcement construction trolley in this application embodiment is as follows: The arch frame is placed on the loading rack 2, so that the arch frame is placed into the material feeding slot of the two supports. The arch frame is supported by the two supports. After the arch frame is placed on the loading rack 2, the two sides of the arch frame are bent upward. The first motor drives the support arm 4 to deflect towards the loading rack 2, so that the connecting frame 44 slides between the two supports. The third motor drives the rotating arm 42 to rotate, and the fourth motor drives the connecting frame 44 to rotate, adjusting the position of the limiting slot 441. At the same time, the lifting cylinder drives the telescopic arm 41 to slide, so that the arch frame enters the limiting slot 441 of the connecting frame 44. Then, the clamping mechanism 6 fixes the arch frame on the connecting frame 44, drives the support arm 4 to flip upward, and removes the arch frame from the loading rack 2.

[0049] The second motor drives the hobbing gear 51 to rotate. As the hobbing gear 51 rotates, it drives the slider to slide in the track groove 32 through the tooth groove, thereby driving the support platform 31 to slide along the track frame 3. With the cooperation of the support arm 4, the arch frame is moved to the installation position. During the movement, the arch frame is rotated 90° by the rotating arm 42, so that the arch frame does not need to be manually moved to the installation position by the workers, which greatly reduces the labor intensity of the workers. Then, the lifting cylinder is used to press the arch frame against the tunnel wall, and the workers can fix the arch frame. Through the cooperation of the support platform 31, the support arm 4 and the telescopic arm 41, the arch frame can be supported at multiple locations in the tunnel, so that the direction and position of the trolley do not need to be adjusted, which greatly improves the construction efficiency of tunnel reinforcement.

[0050] The above description of the disclosed embodiments enables those skilled in the art to make or use the invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the invention. Therefore, the invention is not to be limited to the embodiments shown herein, but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A multi-functional boom for a tunnel reinforcement construction trolley, comprising a trolley body (1), characterized in that: A track frame (3) is fixedly installed on the trolley body (1). The track frame (3) is arc-shaped and gradually arches upward from both sides to the middle. A support platform (31) is slidably installed on the track frame (3). A moving component (5) for driving the support platform (31) to slide on the track frame (3) is provided on the support platform (31). A support arm (4) is rotatably installed on the support platform (31). A first drive source (311) for driving the support arm (4) to rotate is provided on the support platform (31). A telescopic arm (41) is slidably installed on the support arm (4) along the length direction of the support arm (4). A first drive member (43) for driving the telescopic arm (41) to slide is provided on the support arm (4). An abutment member for pressing against the arch frame is provided on the telescopic arm (41). The abutment includes a connecting frame (44), a rotating arm (42) is rotatably mounted on the telescopic arm (41), a third drive source (411) for driving the rotating arm (42) to rotate is mounted on the telescopic arm (41), the connecting frame (44) is rotatably mounted on the rotating arm (42), the rotation axis of the connecting frame (44) is perpendicular to the rotation axis of the rotating arm (42), a fourth drive source (421) for driving the connecting frame (44) to rotate is mounted on the rotating arm (42), and a limiting groove (441) is provided on the connecting frame (44), the limiting groove (441) being adapted to the arch frame; The trolley body (1) is provided with a feeding rack (2), the feeding rack (2) is provided with a feeding trough for placing the arch frame, and the connecting frame (44) is provided with a clamping mechanism (6) for clamping the arch frame. The loading rack (2) is slidably mounted on the trolley body (1) in the horizontal direction, and the trolley body (1) is provided with a second driving member (172) for driving the loading rack (2) to slide. A winding wheel (18) is rotatably mounted on the trolley body (1). A pull rope (181) is wound on the winding wheel (18). The pull rope (181) is fixedly connected to one end of the support arm (4) away from the telescopic arm (41). A servo motor (19) is fixedly mounted on the trolley body (1). A worm gear (191) is coaxially fixedly mounted on the output shaft of the servo motor (19). A worm wheel (182) is coaxially fixedly mounted on the winding wheel (18). The worm wheel (182) meshes with the worm gear (191).

2. The multi-functional boom for a tunnel reinforcement construction trolley according to claim 1, characterized in that: The track frame (3) has a track groove (32), and the support platform (31) has a slider fixedly installed. The slider is slidably installed in the track groove (32). The moving component (5) includes a hobbing gear (51) and a second driving source (52). The hobbing gear (51) is rotatably installed on the slider. The side wall of the track groove (32) has a tooth groove. The hobbing gear (51) meshes with the tooth groove. The second driving source (52) is used to drive the hobbing gear (51) to rotate.

3. The multi-functional boom for a tunnel reinforcement construction trolley according to claim 1, characterized in that: The clamping mechanism (6) includes a first clamping block (61), a second clamping block (62), and a driving assembly. Both sides of the connecting frame (44) are provided with openings that communicate with the limiting groove (441). The first clamping block (61) and the second clamping block (62) are slidably disposed in the two openings respectively. The driving assembly is used to drive the first clamping block (61) and the second clamping block (62) to slide and abut against both sides of the arch frame.

4. The multi-functional boom for a tunnel reinforcement construction trolley according to claim 3, characterized in that: The drive assembly includes a bidirectional screw (64) and a fifth drive source (65). The bidirectional screw (64) is rotatably mounted on the connecting frame (44), and the two ends of the bidirectional screw (64) are threadedly engaged with the first clamping block (61) and the second clamping block (62) respectively. The fifth drive source (65) is used to drive the bidirectional screw (64) to rotate.

5. A multi-functional boom for a tunnel reinforcement construction trolley according to claim 3, characterized in that: Anti-slip pads (63) are fixedly provided at the ends of the first clamping block (61) and the second clamping block (62) that are close to each other.

6. The multi-functional boom for a tunnel reinforcement construction trolley according to claim 3, characterized in that: A buffer block (443) is slidably disposed in the limiting groove (441). The end of the buffer block (443) away from the connecting frame (44) is adapted to the arch frame, and the buffer block (443) is used to abut against the arch frame. An elastic element (444) is provided on the connecting frame (44) to drive the buffer block (443) to slide away from the connecting frame (44).

7. A multi-functional boom for a tunnel reinforcement construction trolley according to claim 2, characterized in that: The implementation process of the boom is as follows: First, place the arch frame on the loading rack (2) so that the arch frame is placed in the material feeding slot of the two supports. The arch frame is supported by the two supports. After the arch frame is placed on the loading rack (2), the two sides of the arch frame are bent upward. The first motor drives the support arm (4) to deflect towards the loading rack (2) so that the connecting frame (44) slides between the two supports. The third motor drives the rotating arm (42) to rotate and the fourth motor drives the connecting frame (44) to rotate to adjust the position of the limiting slot (441). At the same time, the lifting cylinder drives the telescopic arm (41) to slide so that the arch frame enters the limiting slot (441) of the connecting frame (44). Then, the clamping mechanism (6) fixes the arch frame on the connecting frame (44) and drives the support arm (4) to flip upward to remove the arch frame from the loading rack (2). The second motor drives the hobbing gear (51) to rotate. As the hobbing gear (51) rotates, it drives the slider to slide in the track groove (32) through the tooth groove, thereby driving the support platform (31) to slide along the track frame (3). With the cooperation of the support arm (4), the arch frame is moved to the installation position. During the movement, the arch frame is rotated 90° by the rotating arm (42), so that the staff does not need to manually carry the arch frame to the installation position, which greatly reduces the labor intensity of the staff. Then, the arch frame is pressed against the tunnel wall by the lifting cylinder, and the staff can fix the arch frame. With the cooperation of the support platform (31), the support arm (4) and the telescopic arm (41), the arch frame at multiple locations in the tunnel can be supported, so that the direction and position of the trolley do not need to be adjusted, which greatly improves the construction efficiency of tunnel reinforcement.

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