Quick binding device for prefabricated bridge reinforcing steel bars

The automated binding and precise positioning technology of the precast bridge steel bar rapid binding device has solved the problems of poor construction quality and high labor intensity in the existing technology, and achieved efficient and precise steel bar binding effect, reducing the deviation of the steel bar skeleton structure.

CN224197025UActive Publication Date: 2026-05-05ZHONGGUANGHUI (GUANGDONG PROVINCE) BAY AREA CONSTRUCTION TECHNOLOGY CO LTD
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
ZHONGGUANGHUI (GUANGDONG PROVINCE) BAY AREA CONSTRUCTION TECHNOLOGY CO LTD
Filing Date
2025-05-29
Publication Date
2026-05-05

AI Technical Summary

Technical Problem

Existing rebar tying techniques suffer from poor construction quality, high labor intensity, and low efficiency. In particular, handheld rebar tying machines are prone to causing structural deviations in the rebar cage during movement, and also result in high labor intensity for construction workers.

Method used

A rapid binding device for precast bridge steel bars was designed, comprising a binding mechanism, a gantry lifting mechanism, a transverse chute and a sliding table, combined with multiple sets of steel bar positioning components, guide cylinders and guide balls, to achieve automated binding and precise positioning, reduce labor costs and labor intensity, and improve binding accuracy and quality.

Benefits of technology

Automated bundling and precise positioning significantly improve construction efficiency and bundling quality, reduce structural deviations in the steel reinforcement cage, reduce the labor intensity of manual operations, and extend the service life of the equipment.

✦ Generated by Eureka AI based on patent content.

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Patent Text Reader

Abstract

The utility model provides a quick binding device for prefabricated bridge steel bars. The quick binding device comprises a plurality of binding mechanisms, a gantry lifting mechanism, a transverse sliding groove and a sliding table. The multiple bundling mechanisms are connected to the lower portion of a lifting transverse rod of the gantry lifting mechanism at equal intervals. The transverse sliding groove is located below the bundling mechanism. The sliding table is slidably connected to the transverse sliding groove. A plurality of groups of reinforcing steel bar positioning assemblies which are arranged in parallel are arranged on the sliding table, and each group of reinforcing steel bar positioning assemblies comprises positioning seats with the same number as the bundling mechanisms; the positioning seat is provided with four guide cylinders used for being matched with positioning columns of the bundling mechanism in an inserted mode. By means of the steel bar binding device, labor cost and labor intensity can be greatly reduced, construction efficiency is improved, binding precision can be effectively improved, steel bar binding nodes are prevented from being omitted, and binding quality is improved.
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Description

Technical Field

[0001] This utility model relates to the technical field of bridge construction equipment, specifically to a rapid binding device for precast bridge steel bars. Background Technology

[0002] In the production of precast bridges, the binding of the reinforcing steel frame is a crucial and tedious process. Traditional methods rely primarily on manual labor, requiring workers to stand on the steel frame and manually wrap and bind the intersecting points of the reinforcing bars with binding wire. However, this traditional manual method is labor-intensive, slow, and inefficient, severely impacting project progress and quality, and failing to meet the demands of modern large-scale precast bridge production. Against this technological backdrop, handheld reinforcing steel binding machines have emerged. These intelligent tools feature wire feeding, winding, and fastening mechanisms, automatically winding and securing the binding wire to the intersecting points of the reinforcing bars, replacing traditional manual binding methods and improving construction efficiency.

[0003] However, although rebar tying machines can automatically complete the actions of feeding wire, winding, and fastening, the entire operation process requires manual handling and moving of the equipment to each tying point. This makes it easy for untied rebars to move during the process of moving the construction workers on the rebar cage, resulting in deviations in the rebar cage structure and affecting the construction quality. Moreover, the construction workers still need to perform repetitive actions such as bending over and raising their hands for a long time, which still presents technical problems such as high labor intensity. Utility Model Content

[0004] The purpose of this utility model is to provide a rapid binding device for precast bridge steel bars, which effectively solves the technical problems of poor construction quality, high labor intensity and low efficiency of existing steel bar binding technology.

[0005] To solve the above-mentioned technical problems, this utility model provides a rapid binding device for precast bridge steel bars, including multiple binding mechanisms, a gantry lifting mechanism, a transverse chute, and a sliding platform; multiple binding mechanisms are connected at equal intervals below the lifting crossbar of the gantry lifting mechanism; the transverse chute is located below the binding mechanism; the sliding platform is slidably connected to the transverse chute; multiple sets of steel bar positioning components are arranged in parallel on the sliding platform, each set of steel bar positioning components includes the same number of positioning seats as the binding mechanisms; the positioning seats are provided with four guide cylinders for interlocking with the positioning columns of the binding mechanism.

[0006] Preferably, the binding mechanism includes a connecting rod, a base, a rebar binding machine, and four positioning columns; the upper end of the connecting rod is connected to the lifting crossbar of the gantry lifting mechanism; the base is connected to the lower end of the connecting rod; the rebar binding machine is detachably installed at the bottom of the base; and the four positioning columns are evenly spaced around the outer periphery of the rebar binding machine at the bottom of the base.

[0007] Preferably, a groove is formed at the center of the upper end of the positioning seat; four guide cylinders are arranged at equal intervals around the circumference of the groove; a connecting plate is connected between any two adjacent guide cylinders, and the connecting plate has a slot.

[0008] Preferably, the positioning post includes a sleeve, a shock-absorbing spring, a limiting plate, and a positioning rod; the upper end of the sleeve is connected to the bottom of the base; the shock-absorbing spring and the limiting plate are located inside the sleeve; the upper end of the shock-absorbing spring is connected to the inner wall of the upper end of the sleeve; the upper end of the limiting plate is connected to the lower end of the shock-absorbing spring; the upper end of the positioning rod is connected to the lower end of the limiting plate, and the lower end of the positioning rod extends downward to the outside of the sleeve.

[0009] Preferably, the lower end of the positioning rod is provided with a guide ball head; the upper end of the guide cylinder is provided with a funnel-shaped guide part.

[0010] Preferably, it further includes a first threaded rod and a first drive motor; the first threaded rod is rotatably connected in the transverse slide groove; the first drive motor is fixed to one end of the transverse slide groove, and the output end of the first drive motor is connected to the first threaded rod; a slide rail is respectively provided on the upper end of the two side walls of the transverse slide groove; a pulley group for sliding cooperation with the slide rail is respectively provided on both sides of the bottom of the sliding table, and a connecting block that is threadedly connected to the first threaded rod is also provided at the bottom of the sliding table.

[0011] Preferably, the gantry lifting mechanism includes a lifting crossbar and two sets of lifting adjustment components that are threaded to both ends of the lifting crossbar respectively; each set of lifting adjustment components includes a support frame, a second threaded rod, and a second drive motor; a longitudinal groove is provided on the side wall of the support frame near the lifting crossbar; the second threaded rod is rotatably connected in the longitudinal groove and threaded to the end of the lifting crossbar; the second drive motor is fixed to the upper end of the support frame, and the output end of the second drive motor is connected to the second threaded rod.

[0012] Preferably, a target is provided on one side of the sliding platform near each set of rebar positioning components, and a sensor for identifying the target is provided on the lower side wall of the support frame located in the longitudinal chute.

[0013] Preferably, the device also includes a worktable, a gantry lifting mechanism, and a transverse slide rail, which are respectively arranged on the worktable; a controller is provided on the side of the worktable closest to the gantry lifting mechanism.

[0014] Compared with the prior art, the technical solution provided by this utility model has the following advantages:

[0015] (1) The precast bridge steel bar quick binding device provided by this utility model is equipped with a binding mechanism, a gantry lifting mechanism, a transverse slide, and a sliding platform. The sliding platform is equipped with multiple sets of steel bar positioning components. Each set of steel bar positioning components includes the same number of positioning seats as the binding mechanism. Through the coordinated use of the above components, not only can the labor cost and labor intensity be greatly reduced and the construction efficiency improved, but the binding accuracy can also be effectively improved, the steel bar binding nodes can be avoided, and the binding quality can be improved.

[0016] (2) The precast bridge steel bar quick binding device provided by this utility model has a groove in the positioning seat and a connecting plate connected between any two adjacent guide cylinders. The connecting plate has a slot. Through the cooperation between the above components, not only can the transverse steel bars and longitudinal steel bars be stably fixed on the positioning seat to prevent the transverse steel bars or longitudinal steel bars from shifting and reduce the structural deviation of the steel bar skeleton, but it can also facilitate the steel bar binding machine to bind the steel bar intersection nodes.

[0017] (3) The precast bridge steel reinforcement quick binding device provided by this utility model has a sleeve, shock-absorbing spring, limiting plate and positioning rod on the positioning column. Through the cooperation between the above components, the impact force during the positioning process can be effectively buffered when the positioning rod is inserted into the guide cylinder on the positioning seat, so as to avoid rigid collision damage to the components and extend the service life of the precast bridge steel reinforcement quick binding device.

[0018] (4) The precast bridge steel bar quick binding device provided by this utility model has a guide ball head on the positioning rod and a funnel-shaped guide part on the guide cylinder. Through the cooperation between the guide ball head and the guide part, the difficulty of the positioning rod and the guide cylinder can be effectively reduced and the positioning efficiency can be improved. It can also effectively prevent the positioning rod from shifting or getting stuck during the insertion process, and ensure the accuracy and smoothness of the positioning.

[0019] (5) The precast bridge steel bar quick binding device provided by this utility model has a target on the sliding platform and a sensor for identifying the target on the support frame. Through the cooperation between the target and the sensor, it can not only achieve accurate detection and automatic positioning of the sliding platform position without manual judgment and adjustment, thus improving positioning efficiency and accuracy, but also ensure that each set of steel bar positioning components is quickly identified and confirmed when it moves to the designated position, so as to carry out the binding operation of the steel bar intersection node and ensure the orderly progress of the steel bar binding operation. Attached Figure Description

[0020] To more clearly illustrate the technical solutions of the prior art and the embodiments of this application, the drawings used in the description of the prior art and the embodiments of this application will be briefly introduced below. Obviously, the drawings described below are only some embodiments recorded in this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0021] Figure 1 This is a schematic diagram showing the usage state of a precast bridge steel reinforcement quick binding device according to this utility model.

[0022] Figure 2 for Figure 1 Enlarged view of the structure at point A in the middle.

[0023] Figure 3 This is a cross-sectional view of a precast bridge steel reinforcement quick binding device according to the present invention.

[0024] Figure 4 for Figure 3 Enlarged view of the structure at point B.

[0025] Figure 5 for Figure 3 Enlarged view of the structure at point C.

[0026] Figure 6 This is a schematic diagram of the positioning seat in this utility model.

[0027] Figure 7 This is a cross-sectional view of the positioning seat in this utility model.

[0028] Figure 8 This is a cross-sectional view of the positioning column in this utility model.

[0029] Explanation of reference numerals in the attached drawings: 100, binding mechanism; 110, connecting rod; 120, base; 130, rebar binding machine; 140, positioning column; 141, sleeve; 142, shock-absorbing spring; 143, limiting plate; 144, positioning rod; 145, guide ball head; 200, gantry lifting mechanism; 210, lifting crossbar; 220, lifting adjustment assembly; 221, support frame; 221A, longitudinal slide rail; 221B, sensor; 222, second threaded rod; 223, second drive motor; 300, transverse slide rail; 310, slide table; 400, positioning seat; 411, guide cylinder; 411A, guide part; 412, groove; 413, connecting plate; 414, slot; 420, pulley block; 430, connecting block; 440, target; 500, first threaded rod; 600, first drive motor; 700, worktable; 800, controller. Detailed Implementation

[0030] To better understand the purpose, structure, and function of this utility model, the following detailed description of a rapid binding device for precast bridge steel bars provided by this utility model is provided in conjunction with the accompanying drawings, so that those skilled in the art can better understand and implement this utility model. However, the embodiments described are not intended to limit this utility model.

[0031] Please see Figures 1 to 8 As shown in the embodiment of this application, a rapid binding device for precast bridge rebar is provided, including multiple binding mechanisms 100, a gantry lifting mechanism 200, a transverse chute 300, and a sliding table 400. The multiple binding mechanisms 100 are connected at equal intervals below the lifting crossbar 210 of the gantry lifting mechanism 200. The transverse chute 300 is located below the binding mechanism 100. The sliding table 400 is slidably connected to the transverse chute 300. Multiple sets of rebar positioning components are arranged in parallel on the sliding table 400. Each set of rebar positioning components includes the same number of positioning seats 410 as the binding mechanisms 100. Four guide cylinders 411 are provided on the positioning seats 410 for insertion and engagement with the positioning posts 140 of the binding mechanism 100. The rapid binding device for precast bridge rebar also includes a workbench 700, on which the gantry lifting mechanism 200 and the transverse chute 300 are respectively mounted. A controller 800 is located on the side of the workbench 700 closest to the gantry lifting mechanism 200.

[0032] Because it is equipped with a binding mechanism 100, a gantry lifting mechanism 200, a transverse slide 300, and a sliding table 400, and the sliding table 400 is equipped with multiple sets of rebar positioning components, each set of rebar positioning components includes the same number of positioning seats 410 as the binding mechanism 100, the coordinated use of the above components can not only greatly reduce labor costs and labor intensity and improve construction efficiency, but also effectively improve binding accuracy, avoid missing rebar binding nodes, and improve binding quality.

[0033] Specifically, multiple binding mechanisms 100 are set up to simultaneously bind multiple rebar intersections, avoiding omissions and improving construction efficiency. A gantry lifting mechanism 200 is used to move the binding mechanisms 100 closer to or further away from the rebar intersections, replacing manual handling and automating the binding process, thus reducing labor costs and intensity. A transverse chute 300 is provided below the gantry lifting mechanism 200, extending along the length of the worktable 700. This allows the sliding table 400 to move left and right relative to the gantry lifting mechanism 200, moving the rebar skeleton on the sliding table 400 below the gantry lifting mechanism 200 for binding of each rebar intersection by the binding mechanism 100. Meanwhile, by setting multiple sets of rebar positioning components consisting of multiple positioning seats 410 on the sliding table 400, it can not only be used to fix transverse and longitudinal rebars and prevent transverse or longitudinal rebars from shifting during the binding operation, thereby reducing the structural deviation of the rebar skeleton and improving the binding quality, but also, through the cooperation between the positioning column 140 and the positioning seat 410 of the binding mechanism 100 during the binding operation, the rebar binding machine 130 of the binding mechanism 100 can accurately align with the rebar intersection node and perform the binding operation, thereby improving the binding accuracy.

[0034] Furthermore, the gantry lifting mechanism 200 includes a lifting crossbar 210 and two sets of lifting adjustment components 220 respectively threaded to both ends of the lifting crossbar 210; each set of lifting adjustment components 220 includes a support frame 221, a second threaded rod 222, and a second drive motor 223; the support frame 221 has a longitudinal groove 221A on its side wall near the lifting crossbar 210; the second threaded rod 222 is rotatably connected in the longitudinal groove 221A and threaded to the end of the lifting crossbar 210; the second drive motor 223 is fixed to the upper end of the support frame 221, and the output end of the second drive motor 223 is connected to the second threaded rod 222. By driving the second threaded rod 222 to rotate through the second drive motor 223, the lifting crossbar 210 is moved up or down along the longitudinal groove 221A, thereby causing the binding mechanism 100 to move closer to or away from the rebar intersection node.

[0035] Furthermore, the binding mechanism 100 includes a connecting rod 110, a base 120, a rebar binding machine 130, and four positioning columns 140. The upper end of the connecting rod 110 is connected to the lifting crossbar 210 of the gantry lifting mechanism 200; the base 120 is connected to the lower end of the connecting rod 110; the rebar binding machine 130 is detachably mounted on the bottom of the base 120; the four positioning columns 140 are evenly spaced around the outer periphery of the rebar binding machine 130 at the bottom of the base 120. The connecting rod 110 and base 120 are used to assemble the rebar binding machine 130 below the lifting crossbar 210. The four positioning columns 140 are used to engage with the four guide cylinders 411 on the positioning seat 410, enabling the rebar binding machine 130 to align with the rebar intersections and perform binding operations, thus improving binding accuracy. By detachably mounting the rebar tying machine 130 at the bottom of the base 120 (e.g., threaded connection, snap-fit ​​connection), the rebar tying machine 130 can be easily disassembled and assembled, facilitating later maintenance.

[0036] In a preferred embodiment, a groove 412 is formed at the upper center of the positioning seat 410; four guide cylinders 411 are arranged at equal intervals around the groove 412; a connecting plate 413 is connected between any two adjacent guide cylinders 411, and the connecting plate 413 is provided with a slot 414.

[0037] Since the positioning seat 410 is provided with a groove 412, and a connecting plate 413 is connected between any two adjacent guide cylinders 411, and the connecting plate 413 is provided with a slot 414, through the cooperation of the above components, not only can the transverse steel bars and longitudinal steel bars be clamped in the slot 414, so that the transverse steel bars and longitudinal steel bars can be stably fixed on the positioning seat 410, preventing the transverse steel bars or longitudinal steel bars from shifting and reducing the structural deviation of the steel bar skeleton, but it also makes it easier for the steel bar binding machine 130 to bind the steel bar intersection nodes.

[0038] In a preferred embodiment, the positioning post 140 includes a sleeve 141, a shock-absorbing spring 142, a limiting plate 143, and a positioning rod 144; the upper end of the sleeve 141 is connected to the bottom of the base 120; the shock-absorbing spring 142 and the limiting plate 143 are respectively located inside the sleeve 141; the upper end of the shock-absorbing spring 142 is connected to the inner wall of the upper end of the sleeve 141; the upper end of the limiting plate 143 is connected to the lower end of the shock-absorbing spring 142; the upper end of the positioning rod 144 is connected to the lower end of the limiting plate 143, and the lower end of the positioning rod 144 extends downward to the outside of the sleeve 141.

[0039] Since the positioning column 140 is equipped with a sleeve 141, a shock-absorbing spring 142, a limiting plate 143 and a positioning rod 144, the cooperation between the above components can effectively buffer the impact force during the positioning process when the positioning rod 144 is inserted into the guide cylinder 411 on the positioning seat 410, avoid rigid collisions from damaging the components, and extend the service life of the precast bridge steel reinforcement quick binding device.

[0040] In a preferred embodiment, the lower end of the positioning rod 144 is provided with a guide ball head 145; the upper end of the guide cylinder 411 is provided with a funnel-shaped guide portion 411A.

[0041] Since the positioning rod 144 is provided with a guide ball head 145 and the guide cylinder 411 is provided with a funnel-shaped guide part 411A, the cooperation between the guide ball head 145 and the guide part 411A can not only effectively reduce the difficulty of the positioning rod 144 and the guide cylinder 411 when they are inserted and connected, and improve the positioning efficiency, but also effectively prevent the positioning rod 144 from shifting or getting stuck during the insertion process, ensuring the accuracy and smoothness of the positioning. Specifically, by setting a guide ball head 145 with a smooth shape, when the positioning rod 144 contacts the guide cylinder 411, it can form a smooth contact surface with the inner wall of the funnel-shaped guide portion 411A. Utilizing the cooperation between the spherical surface and the inclined surface, when the positioning rod 144 approaches the guide cylinder 411, the funnel shape of the guide portion 411A can generate a guiding force on the guide ball head 145, enabling the positioning rod 144 to automatically move towards the center position of the guide cylinder 411. At the same time, under the guidance of the guide portion 411A, the guide ball head 145 can smoothly insert into the guide cylinder 411 along the inner wall of the guide portion 411A. The funnel-shaped guide portion 411A has a large opening, which can effectively reduce the obstruction when the positioning rod 144 is inserted, and avoid the jamming phenomenon caused by the direct collision between the positioning rod 144 and the port of the guide cylinder 411, thereby ensuring the efficiency, accuracy and smoothness of the positioning process.

[0042] In a preferred embodiment, the precast bridge rebar quick-tying device further includes a first threaded rod 500 and a first drive motor 600; the first threaded rod 500 is rotatably connected within a transverse slide groove 300; the first drive motor 600 is fixed to one end of the transverse slide groove 300, and the output end of the first drive motor 600 is connected to the first threaded rod 500; a slide rail 310 is respectively provided on the upper ends of the two side walls of the transverse slide groove 300; pulley sets 420 for sliding cooperation with the slide rails 310 are respectively provided on both sides of the bottom of the sliding table 400, and a connecting block 430 threadedly connected to the first threaded rod 500 is also provided at the bottom of the sliding table 400. Driven by the first drive motor 600, the first threaded rod 500 rotates. Since the connecting block 430 at the bottom of the sliding table 400 is threadedly connected to the first threaded rod 500, the connecting block 430 can move along the axial direction of the threaded rod during the rotation of the first threaded rod 500, thereby driving the entire sliding table 400 to move. Meanwhile, the pulley blocks 420 on both sides of the bottom of the sliding table 400 slide in cooperation with the slide rails 310 on both sides of the transverse slide groove 300. The slide rails 310 guide and support the pulley blocks 420, so that the sliding table 400 will not deviate or shake during the movement, ensuring the stability of the steel reinforcement skeleton on the sliding table 400 and improving the quality of steel reinforcement binding.

[0043] In a preferred embodiment, a target 440 is provided on one side of the sliding table 400 near each set of rebar positioning components, and a sensor 221B for identifying the target 440 is provided on the lower side wall of the support frame 221 located in the longitudinal chute 221A.

[0044] Because a target 440 is installed on the sliding table 400, and a sensor 221B for identifying the target 440 is installed on the support frame 221, the coordinated use of the target 440 and the sensor 221B not only enables precise detection and automatic positioning of the sliding table 400 without manual judgment and adjustment, improving positioning efficiency and accuracy, but also ensures that each set of rebar positioning components is quickly identified and confirmed when it moves to the designated position, facilitating the binding operation of the rebar intersections and ensuring the orderly progress of the rebar binding operation. Specifically, when the sliding table 400 moves on the transverse slide 300, the target 440 installed on the sliding table 400 moves synchronously with the sliding table 400. When the target 440 moves into the sensing range of the sensor 221B, the sensor 221B can quickly identify the position information of the target 440 and transmit the position information of the target 440 to the controller 800. The controller 800 can determine whether the target 440 has reached the designated position based on the position information of the target 440 sent by the sensor. If the target 440 reaches the designated position, the controller 800 issues a command to stop the first drive motor 600 and start the second drive motor 223 to lower the height of the lifting crossbar 210 and drive the rebar tying machine 130 to tie the rebar intersection.

[0045] It is understood that this utility model has been described through some embodiments, and those skilled in the art will recognize that various changes or equivalent substitutions can be made to these features and embodiments without departing from the spirit and scope of this utility model. Furthermore, under the teachings of this utility model, these features and embodiments can be modified to adapt to specific situations and materials without departing from the spirit and scope of this utility model. Therefore, this utility model is not limited to the specific embodiments disclosed herein, and all embodiments falling within the scope of the claims of this application are within the protection scope of this utility model.

Claims

1. A rapid binding device for precast bridge steel reinforcement, characterized in that, It includes multiple binding mechanisms, a gantry lifting mechanism, a transverse slide, and a sliding platform; the multiple binding mechanisms are connected at equal intervals below the lifting crossbar of the gantry lifting mechanism; the transverse slide is located below the binding mechanism; the sliding platform is slidably connected to the transverse slide; the sliding platform is provided with multiple sets of rebar positioning components arranged in parallel, each set of rebar positioning components including the same number of positioning seats as the binding mechanisms; the positioning seats are provided with four guide cylinders for inserting and engaging with the positioning columns of the binding mechanisms.

2. The rapid binding device for precast bridge steel reinforcement according to claim 1, characterized in that, The binding mechanism includes a connecting rod, a base, a rebar binding machine, and four positioning columns; the upper end of the connecting rod is connected to the lifting crossbar of the gantry lifting mechanism; the base is connected to the lower end of the connecting rod; the rebar binding machine is detachably mounted on the bottom of the base; the four positioning columns are evenly spaced around the outer periphery of the rebar binding machine at the bottom of the base.

3. The rapid binding device for precast bridge steel reinforcement according to claim 2, characterized in that, A groove is formed at the center of the upper end of the positioning seat; four guide cylinders are arranged at equal intervals around the groove; a connecting plate is connected between any two adjacent guide cylinders, and the connecting plate has a slot.

4. The rapid binding device for precast bridge steel reinforcement according to claim 2, characterized in that, The positioning post includes a sleeve, a shock-absorbing spring, a limiting plate, and a positioning rod; the upper end of the sleeve is connected to the bottom of the base; the shock-absorbing spring and the limiting plate are respectively located inside the sleeve; the upper end of the shock-absorbing spring is connected to the inner wall of the upper end of the sleeve; the upper end of the limiting plate is connected to the lower end of the shock-absorbing spring; the upper end of the positioning rod is connected to the lower end of the limiting plate, and the lower end of the positioning rod extends downward to the outside of the sleeve.

5. The rapid binding device for precast bridge steel reinforcement according to claim 4, characterized in that, The lower end of the positioning rod is provided with a guide ball head; the upper end of the guide cylinder is provided with a funnel-shaped guide part.

6. The rapid binding device for precast bridge steel reinforcement according to any one of claims 1 to 5, characterized in that, It also includes a first threaded rod and a first drive motor; the first threaded rod is rotatably connected to the transverse slide groove; the first drive motor is fixed to one end of the transverse slide groove, and the output end of the first drive motor is connected to the first threaded rod; a slide rail is respectively provided on the upper end of the two side walls of the transverse slide groove; a pulley group for sliding cooperation with the slide rail is respectively provided on both sides of the bottom of the sliding table, and a connecting block for threaded connection with the first threaded rod is also provided on the bottom of the sliding table.

7. The rapid binding device for precast bridge reinforcement bars according to claim 6, characterized in that, The gantry lifting mechanism includes a lifting crossbar and two sets of lifting adjustment components that are threaded to both ends of the lifting crossbar. Each set of lifting adjustment components includes a support frame, a second threaded rod, and a second drive motor. A longitudinal groove is provided on the side wall of the support frame near the lifting crossbar. The second threaded rod is rotatably connected in the longitudinal groove and threaded to the end of the lifting crossbar. The second drive motor is fixed to the upper end of the support frame, and the output end of the second drive motor is connected to the second threaded rod.

8. The rapid binding device for precast bridge steel reinforcement according to claim 7, characterized in that, A target is provided on one side of the sliding platform near each set of the rebar positioning components, and a sensor for identifying the target is provided on the lower side wall of the support frame located in the longitudinal chute.

9. The rapid binding device for precast bridge steel reinforcement according to claim 6, characterized in that, It also includes a worktable, on which the gantry lifting mechanism and the transverse slide are respectively disposed; a controller is disposed on the side of the worktable near the gantry lifting mechanism.