Tunnel intelligent steel bar operation trolley

Abstract

The invention provides an intelligent tunnel reinforcing steel bar operation trolley which is characterized in that traveling wheels are arranged below a trolley body, and a plurality of arched supporting frames corresponding to a tunnel vault are arranged above the trolley body; the positioning rod is arranged on the outer side of the arch-shaped supporting frame and extends in the length direction of the trolley body, and a positioning notch which corresponds to the arch-shaped supporting frame and is matched with the grid arch frame in width is formed in the positioning rod; the plurality of positioning rods are distributed at intervals along the arched support frame; the multiple hinge legs are correspondingly hinged to the two ends of the arch-shaped supporting frame and rotate in the plane where the section of the tunnel is located, the arch-shaped supporting frame is matched with the positioning rod, accurate positioning of the arch crown part of the grid arch frame can be achieved, and the arch frame is prevented from deviating; and the side wall part of the grid arch frame can be accurately adjusted to be folded.

Description

Technical Field

[0001] This invention belongs to the technical field of tunnel construction equipment, specifically relating to an intelligent rebar handling trolley for tunnels. Background Technology

[0002] In tunnel construction, the grid arch frame serves as the core structure of tunnel support, and its installation accuracy and construction efficiency directly affect the quality of tunnel support and the construction progress. Currently, the installation of tunnel grid arch frames is mostly carried out manually with simple supports. Due to the narrow space and complex environment of tunnel construction, manual clamping and adjustment of the arch frames is labor-intensive, inefficient, and prone to significant installation errors. Furthermore, manual high-altitude work poses significant safety hazards. While some steel reinforcement trolleys have emerged in existing technologies, most are simple in structure, only capable of basic support functions, have low automation levels, and require extensive manual assistance, making it difficult to meet the needs of intelligent tunnel construction.

[0003] Therefore, there is a need to provide an improved technical solution that addresses the shortcomings of the existing technology. Summary of the Invention

[0004] The purpose of this invention is to overcome the shortcomings of the prior art. This invention provides an intelligent rebar handling trolley for tunnels.

[0005] To achieve the above objectives, the present invention provides the following technical solution: A tunnel intelligent rebar handling trolley includes: The trolley body has traveling wheels at its bottom and multiple arched support frames corresponding to the tunnel arch at its top. A positioning rod is provided on the outside of the arched support frame and extends along the length of the trolley body. The positioning rod has a positioning notch that corresponds to the arched support frame and is adapted to the width of the grid arch frame. Multiple positioning rods are distributed at intervals along the arched support frame. The articulated legs are connected to both ends of the arched support frame and rotate within the plane of the tunnel section. A drive cylinder is provided between the middle of the articulated legs and the trolley body. A clamping mechanism is provided on both sides of the hinge leg and is used to clamp the portion of the grid arch frame corresponding to the tunnel sidewall.

[0006] Preferably, there are two sets of clamping mechanisms on the same hinge leg, and the two sets of clamping mechanisms are distributed at intervals. An adjustment mechanism corresponding to and connecting the two sets of clamping mechanisms is provided on the hinge leg.

[0007] Preferably, the articulated leg is a channel steel with its open side pointing towards the trolley body, and the adjustment mechanism is correspondingly assembled inside the articulated leg; The clamping mechanism includes a slider and a base. The slider is located inside the hinge leg and slides along the length of the hinge leg under the drive of the adjustment mechanism. The slider has connecting rods on both sides, and the connecting rods extend out of the hinge leg and are respectively connected to the base. The hinge leg has strip holes on both sides corresponding to the connecting rods. The base is provided with a clamping plate driven by a cylinder.

[0008] Preferably, the adjustment mechanism includes an adjustment motor and a lead screw, the lead screw is threadedly fitted with two sliders of the clamping mechanism, the two ends of the lead screw are respectively rotatably connected to the inner wall of the hinge leg, and the adjustment motor is correspondingly connected to one end of the lead screw.

[0009] Preferably, the trolley body is equipped with a lifting cylinder corresponding to the traveling wheel below.

[0010] Preferably, the trolley body is equipped with a controller, and the traveling wheels, drive cylinders and clamping mechanism are communicatively connected to the controller.

[0011] Preferably, the plurality of calibration points are distributed at intervals along the tunnel mileage direction on the tunnel floor, and the controller is equipped with a sensing module for sensing the calibration points; The calibration point is a Hall effect sensor or a laser sensor anchored to the tunnel floor. After measuring each calibration point with a total station, the corresponding tunnel construction design parameters are given, and each calibration point is matched one-to-one with the corresponding tunnel construction design parameters. The controller controls the traveling wheel, drive cylinder and clamping mechanism based on the tunnel construction design parameters of the calibration point.

[0012] Preferably, the inner side of the articulated leg is provided with a cross brace, and the drive cylinder is correspondingly connected to the cross brace; The cross brace is provided with a laying station for laying the support plate, which serves as a construction platform for the corresponding tunnel sidewall section. The trolley body is equipped with a corresponding tunnel arch and construction platforms on both sides.

[0013] Preferably, the width of the arched support frame is greater than the width of the grid arch frame, and the height of the positioning rod is less than the height of the grid arch frame.

[0014] Beneficial effects: The combination of arched support frame and positioning rod enables precise positioning of the arch top of the grid arch frame, preventing the arch frame from shifting. The combination of articulated legs and drive cylinders allows for precise adjustment of the folding of the side wall section of the grid arch frame. This allows the steel trolley assembling the grid arch frame to smoothly enter the tunnel to be constructed after the side wall section is folded. The trolley is equipped with a controller, and the intelligent control of the calibration point and controller can automatically adapt to the actual parameters of the tunnel inner wall, further improving installation accuracy and avoiding errors caused by manual positioning. Attached Figure Description

[0015] The accompanying drawings, which form part of this application, are used to provide a further understanding of the invention. The illustrative embodiments of the invention and their descriptions are used to explain the invention and do not constitute an undue limitation of the invention. Wherein: Figure 1 This is a simplified structural diagram of the rebar work trolley provided in a specific embodiment of the present invention; Figure 2 This is a folding diagram of the rebar operation trolley in a specific embodiment provided by the present invention; Figure 3 This is a schematic diagram of the assembly of the hinged leg in a specific embodiment of the present invention.

[0016] In the diagram: 1. Trolley body; 2. Arch support frame; 3. Grille arch frame; 4. Positioning rod; 5. Articulated leg; 6. Clamping plate; 7. Drive cylinder; 8. Traveling wheel; 9. Lifting cylinder; 10. Construction platform; 11. Cross brace; 12. Adjustment motor; 13. Slider; 14. Lead screw; 15. Cylinder; 16. Base. Detailed Implementation

[0017] The technical solutions in the embodiments of the present invention will be clearly and completely described below. Obviously, the described embodiments are only a part of the embodiments of the present invention, and not all of them. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention are within the scope of protection of the present invention.

[0018] In the description of this invention, the terms "longitudinal," "lateral," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," and "bottom," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing the invention and do not require the invention to be constructed and operated in a specific orientation; therefore, they should not be construed as limitations on the invention. The terms "connected" and "linked" used in this invention should be interpreted broadly. For example, they can refer to a fixed connection or a detachable connection; they can refer to a direct connection or an indirect connection through intermediate components. Those skilled in the art can understand the specific meaning of the above terms according to the specific circumstances.

[0019] The present invention will now be described in detail with reference to the accompanying drawings and embodiments. It should be noted that, unless otherwise specified, the embodiments and features described herein can be combined with each other.

[0020] like Figure 1-3 As shown, an intelligent rebar handling trolley for tunnels includes a trolley body 1, positioning rods 4, articulated legs 5, and a clamping mechanism. The trolley body 1 is used to install various functional components and provide a working platform for operators. The trolley body 1 is equipped with traveling wheels 8 at its bottom, which can be connected to servo motors, thereby enabling the trolley body 1 to move smoothly along the length of the tunnel. The trolley body 1 is equipped with multiple arched support frames 2 corresponding to the tunnel arch. The curvature of the arched support frames 2 matches the design curvature of the tunnel arch, which can accurately fit the inner contour of the grid arch frame 3, providing a precise support benchmark for the installation of the grid arch frame 3. The multiple arched support frames 2 are evenly spaced along the length of the trolley body 1. A positioning rod 4 is installed on the outside of the arched support frame 2. The positioning rod 4 can be square steel or channel steel. The positioning rod 4 is set on the outside of the arched support frame 2 and extends along the length of the trolley body 1. Its length is adapted to the length of the trolley body 1. The positioning rod 4 is provided with a positioning notch corresponding to the arched support frame 2 and adapted to the width of the grid arch frame 3. The shape of the positioning notch matches the cross-sectional shape of the grid arch frame 3. The arch top part of the grid arch frame 3 can be embedded in the positioning notch to realize the quick positioning of the grid arch frame 3 and prevent the arch frame from shifting left and right during installation. Multiple positioning rods 4 are distributed at intervals along the arched support frame 2. The interval distance is set according to the design spacing of the grid arch frame 3 to ensure stable support for the grid arch frame 3.

[0021] Multiple articulated legs 5 are hinged to both ends of the arched support frame 2 and are located at the same tunnel cross-section as the corresponding arched support frame 2. They rotate within the plane of the tunnel cross-section to support and adjust the sidewall portion of the grid arch frame 3. The articulated legs 5 are hinged to the arched support frame 2, allowing the articulated legs 5 to rotate flexibly within the plane of the tunnel cross-section and fold, reducing the space occupied by the rebar trolley and enabling movement within the tunnel. A drive cylinder 7 is provided between the middle of the articulated leg 5 and the trolley body 1. The extension and retraction of the drive cylinder 7 drives the rotation of the articulated leg 5, eliminating the need for manual adjustment, reducing labor intensity, and improving adjustment accuracy. Clamping mechanisms are located on both sides of the articulated legs 5 to clamp the portion of the grid arch frame 3 corresponding to the tunnel sidewall, thus allowing the grid arch frame 3 to move with the articulated legs 5. In this embodiment, there are two sets of clamping mechanisms on the same hinge leg 5. The two sets of clamping mechanisms are distributed at intervals along the length direction of the hinge leg 5, which can clamp different positions of the side wall portion of the grid arch frame 3, further improving the stability of clamping. An adjustment mechanism corresponding to the two sets of clamping mechanisms is provided on the hinge leg 5. The adjustment mechanism is provided on the hinge leg 5 and can synchronously drive the two sets of clamping mechanisms to move along the length direction of the hinge leg 5, thereby adjusting the height of the side wall portion of the grid arch frame 3 and realizing the automatic adjustment of the grid arch frame 3.

[0022] Furthermore, the articulated leg 5 is made of channel steel, with its opening side pointing towards the trolley body 1, providing a stable mounting base for the adjustment mechanism and clamping mechanism. The adjustment mechanism is correspondingly assembled inside the articulated leg 5. The clamping mechanism includes a slider 13 and a base 16. The slider 13 is a square block adapted to the channel steel. The slider 13 is located inside the articulated leg 5 and slides along the length of the articulated leg 5 under the drive of the adjustment mechanism. Connecting rods are provided on both sides of the slider 13. The connecting rods are welded to the slider 13 or integrally formed. After the connecting rods extend out of the articulated leg 5, they are respectively connected to the base 16. The articulated leg 5 has corresponding strip holes on both sides of the connecting rods, so that the slider 13 can drive the connecting rods to slide along the length of the articulated leg 5. The base 16 is equipped with a clamping plate 6 driven by a cylinder 15 to achieve position adjustment. The end of the connecting rod is fixedly connected to the base 16, which is used to fix the cylinder 15 and the clamping plate 6. The cylinder 15 on the base 16 serves as the driving component for the clamping plate 6, driving the clamping plate 6 to clamp and release the grid arch 3. The clamping plate 6 is made of wear-resistant and pressure-resistant metal material, and its clamping surface can be provided with anti-slip texture to increase the friction between the clamping plate 6 and the grid arch 3. The cylinder 15 is a miniature cylinder 15, with one miniature cylinder 15 on each side of the base 16, correspondingly connected to the two sides of the clamping plate 6 to drive the clamping plate 6.

[0023] In this embodiment, an adjustment mechanism drives two clamping mechanisms to move the grid arch 3 along the hinge leg 5. The adjustment mechanism includes an adjustment motor 12 and a lead screw 14. The lead screw 14 is threadedly fitted with the sliders 13 of the two clamping mechanisms. Both ends of the lead screw 14 are rotatably connected to the inside of the hinge leg 5. The adjustment motor 12 is correspondingly connected to one end of the lead screw 14. The adjustment motor 12 is fixedly installed at one end of the inner cavity of the hinge leg 5, and its output shaft is fixedly connected to one end of the lead screw 14 through a coupling. The sliders 13 of the two clamping mechanisms are threadedly fitted onto the lead screw 14. The two sliders 13 move relative to each other along the length of the lead screw 14, thereby adjusting the corresponding grid arch 3. By allowing the hinge leg 5 to fold normally, the space occupied is reduced, thus facilitating its displacement within the tunnel. Furthermore, the installation accuracy can be improved by adjusting the corresponding position height.

[0024] The trolley body 1 is equipped with lifting cylinders 9 corresponding to the traveling wheels 8. Each cylinder is fixed to the bottom of the trolley body 1, with the piston rod end facing the tunnel floor and connected to the wheel frame of the traveling wheel 8. The lifting cylinders 9, in conjunction with the hinged legs 5, fold the trolley, creating a gap between the arch frame and the tunnel wall for easy movement.

[0025] The trolley body 1 is equipped with a controller, which is a PLC controller with signal receiving, processing, and command sending functions. The traveling wheel 8, drive cylinder 7, and clamping mechanism are communicatively connected to the controller. The drive motor of the traveling wheel 8, the hydraulic control valve of the drive cylinder 7, the cylinder 15 of the clamping mechanism, and the adjusting motor 12 are all communicatively connected to the controller via wires. The controller can receive feedback signals from each component and send control commands to each component according to preset programs or manual operation instructions, realizing intelligent control of the entire operation process, improving the automation level of the equipment, reducing manual labor intensity, and improving construction accuracy and operational safety.

[0026] In one optional embodiment, an NFC sensing element, a Hall effect sensing element, or a laser sensing element is set as a calibration point on the tunnel floor. The calibration point is preferably an NFC sensing element. NFC, also known as Near Field Communication, is a short-range high-frequency wireless communication technology that allows contactless point-to-point data transmission between electronic devices. The corresponding construction design parameters can be obtained by reading the data.

[0027] Multiple calibration points are spaced apart along the tunnel mileage direction on the tunnel floor. The controller is equipped with sensing modules that detect these calibration points. After measuring each calibration point using a total station, corresponding tunnel construction design parameters are generated. Each calibration point is then mapped one-to-one with these parameters. The controller controls the traveling wheels 8, drive cylinders 7, and clamping mechanism based on the tunnel construction design parameters corresponding to each calibration point. The spacing between calibration points is typically 5-10 meters. After installation at each calibration point, the tunnel wall parameters (including tunnel arch elevation, sidewall inclination angle, and tunnel cross-sectional dimensions) at that location are precisely measured using a total station. The measured wall parameters are then bound to the corresponding calibration point and stored in the controller's database.

[0028] The sensing module on the controller is compatible with the sensing element of the calibration point. When the trolley moves, the sensing module can sense the calibration point it passes in real time. When a calibration point is sensed, the sensing module sends a signal to the controller. After receiving the signal, the controller retrieves the tunnel inner wall parameters corresponding to the calibration point from the database and automatically performs precise control on the traveling wheel 8, drive cylinder 7 and clamping mechanism according to the parameters: controls the traveling wheel 8 to stop moving, controls the lifting cylinder 9 to extend and fix the trolley; controls the drive cylinder 7 to extend and retract, adjusts the tilt angle of the articulated leg 5 so that the side wall of the grid arch 3 fits the design outline of the tunnel side wall, and controls the clamping mechanism to adjust the spacing and clamp the grid arch 3 to ensure that the installation position of the grid arch 3 is consistent with the design parameters.

[0029] In an optional embodiment, a cross brace 11 is provided on the inner side of the articulated leg 5. The cross brace 11 is made of metal profile and is horizontally fixed on the inner side of the middle of the articulated leg 5. A laying station is provided on the cross brace 11 for laying support plates to form a construction platform 10 corresponding to the tunnel sidewall. Workers can stand on the platform to carry out auxiliary operations such as bolt connection and welding of the sidewall of the grid arch frame 3.

[0030] The trolley body 1 is equipped with corresponding tunnel arch and construction platforms 10 on the top and sides, respectively. Workers can stand on these platforms to carry out auxiliary installation work on the arch part of the grid arch frame 3.

[0031] The width of the arch support frame 2 is greater than the width of the grid arch frame 3, so that a corresponding notch can be made in the grid arch frame 3. The height of the positioning rod 4 is less than the height of the grid arch frame 3, so that the grid arch frame 3 protrudes upward from the positioning rod 4. The positioning rod 4 avoids hitting the inner wall of the tunnel. The width of the hinge leg 5 is less than the grid arch frame 3, ensuring that the clamping mechanism can clamp the side wall part of the grid arch frame 3.

[0032] The above description is merely a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention shall be within the scope of protection of the pending claims of the present invention.

Claims

1. A tunnel intelligent rebar handling trolley, characterized in that, include: The trolley body has traveling wheels at its bottom and multiple arched support frames corresponding to the tunnel arch at its top. A positioning rod is provided on the outside of the arched support frame and extends along the length of the trolley body. The positioning rod has a positioning notch that corresponds to the arched support frame and is adapted to the width of the grid arch frame. Multiple positioning rods are distributed at intervals along the arched support frame. The articulated legs are connected to both ends of the arched support frame and rotate within the plane of the tunnel section. A drive cylinder is provided between the middle of the articulated legs and the trolley body. A clamping mechanism is provided on both sides of the hinge leg and is used to clamp the portion of the grid arch frame corresponding to the tunnel sidewall.

2. The intelligent rebar handling trolley for tunnels according to claim 1, characterized in that, There are two sets of clamping mechanisms on the same hinge leg, and the two sets of clamping mechanisms are distributed at intervals. An adjustment mechanism is provided on the hinge leg to connect the two sets of clamping mechanisms.

3. The intelligent tunnel rebar handling trolley according to claim 2, characterized in that, The articulated leg is made of channel steel, with its open side pointing towards the trolley body, and the adjustment mechanism is correspondingly assembled inside the articulated leg; The clamping mechanism includes a slider and a base. The slider is located inside the hinge leg and slides along the length of the hinge leg under the drive of the adjustment mechanism. The slider has connecting rods on both sides, and the connecting rods extend out of the hinge leg and are respectively connected to the base. The hinge leg has strip holes on both sides corresponding to the connecting rods. The base is provided with a clamping plate driven by a cylinder.

4. The intelligent rebar handling trolley for tunnels according to claim 3, characterized in that, The adjustment mechanism includes an adjustment motor and a lead screw. The lead screw is threaded with two sliders of the clamping mechanism. The two ends of the lead screw are rotatably connected to the inner wall of the hinge leg. The adjustment motor is correspondingly connected to one end of the lead screw.

5. The intelligent rebar handling trolley for tunnels according to claim 1, characterized in that, The trolley body is equipped with lifting cylinders corresponding to the traveling wheels.

6. The intelligent tunnel rebar handling trolley according to claim 5, characterized in that, The trolley body is equipped with a controller, and the traveling wheels, drive cylinders and clamping mechanism are communicatively connected to the controller.

7. The intelligent rebar handling trolley for tunnels according to claim 6, characterized in that, Multiple calibration points are spaced apart on the tunnel floor along the tunnel mileage direction, and the controller is equipped with a sensing module that senses the calibration points. The calibration point is a Hall effect sensor or a laser sensor anchored to the tunnel floor. After measuring each calibration point with a total station, the corresponding tunnel construction design parameters are given, and each calibration point is matched one-to-one with the corresponding tunnel construction design parameters. The controller controls the traveling wheel, drive cylinder and clamping mechanism based on the tunnel construction design parameters of the calibration point.

8. The intelligent rebar handling trolley for tunnels according to claim 1, characterized in that, The inner side of the articulated leg is provided with a cross brace, and the drive cylinder is connected to the cross brace accordingly. The cross brace is provided with a laying station for laying the support plate, which serves as a construction platform for the corresponding tunnel sidewall section. The trolley body is equipped with a corresponding tunnel arch and construction platforms on both sides.

9. The intelligent rebar handling trolley for tunnels according to claim 1, characterized in that, The width of the arched support frame is greater than the width of the grid arch frame, and the height of the positioning rod is less than the height of the grid arch frame.

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