Bridge bottom construction maintenance trolley

Abstract

The invention discloses a bridge bottom construction maintenance trolley, which relates to the technical field of bridge maintenance, and comprises a suspension trolley, a truss hanging basket channel, a working rack, a safety ladder, a suspension cable and an electromagnetic swing stabilizer, the two sets of suspension cables are connected to the two ends of the truss hanging basket channel and the suspension vehicles on the two sides of the bridge floor correspondingly, and the cable adjusting units control the suspension cables to be wound and unwound so as to adjust the distance between the truss hanging basket channel and the bridge bottom. The working rack is arranged on the truss hanging basket channel and is used for operators to approach to the bridge bottom for high-altitude operation; one end of the safety ladder is mounted below a suspension arm of the suspension vehicle, and the other end of the safety ladder is connected with a truss hanging basket channel and contains the suspension cable; the electromagnetic swing stabilizer is arranged on a suspension arm of the suspension vehicle, is connected with the suspension cable through a plurality of electromagnetic adjusting cylinders, and is used for counteracting shaking generated during operation and stabilizing the postures of the suspension cable and a truss hanging basket channel; the problems of work amount, efficiency, safety, operation range and flexibility of existing bridge bottom maintenance are solved, and efficient, safe and flexible bridge bottom maintenance operation is achieved.

Description

Technical Field

[0001] The present invention relates to the technical field of bridge maintenance, and in particular to a bridge bottom construction and maintenance trolley. Background Art

[0002] In recent years, with the rapid development of my country's transportation infrastructure, the number of bridges, especially large-span and high-pier bridges, has continued to increase. During their long-term service, these bridges will inevitably suffer from defects such as concrete spalling, steel corrosion, structural cracks, and loose components. Regular inspections and maintenance are necessary to ensure structural safety and extend their service life. However, the lower space of these bridges usually crosses roads, rivers, or deep valleys, and the environment is complex, making the inspection, maintenance, and repair of the bridge bottom the most challenging and complex part of bridge operation and maintenance.

[0003] Currently, two methods are commonly used for bridge underpass inspections: one is to erect scaffolding. This method requires building a scaffolding system that covers the bridge bottom or a portion of the bridge area. While this method can achieve full coverage of the work surface to a certain extent, it is labor-intensive, time-consuming, and expensive to erect and dismantle. Furthermore, some bridges are located directly adjacent to major traffic arteries, and scaffolding often requires lane closures, severely impacting road access and urban operation efficiency. Furthermore, the scaffolding's high height and long spans make it difficult for construction workers to operate, posing a high safety risk.

[0004] Another approach is to employ a "Spider-Man" high-altitude suspension operation, whereby maintenance personnel wear safety harnesses and suspend themselves from the bridge floor to perform inspections, repairs, or surveys. While this method offers a degree of flexibility and isn't restricted by the space beneath the bridge, it relies heavily on the operator's skills and physical strength, posing serious safety risks such as falls and fatigue injuries. Furthermore, the maintenance personnel's limited operating range makes it difficult to quickly cover large areas, resulting in low overall maintenance efficiency. Furthermore, suspended operators have limited ability to perform detailed inspections of complex structural areas and carry limited equipment, making them unable to meet the multi-dimensional, detailed inspection or construction requirements of the bridge floor.

[0005] The technical problems existing in the prior art are: (1) The scaffolding erection method requires a large amount of work, takes a long time to erect and dismantle, is costly, affects traffic, and has low overall construction efficiency; (2) The "Spider-Man" suspension operation has major safety risks such as falling from height, and the operation efficiency is low and the operation range is limited; (3) The existing maintenance methods are difficult to achieve the refined, full-coverage inspection and multi-functional maintenance needs of the bridge bottom structure, and there is a lack of a set of safe, efficient and flexible bridge bottom construction and maintenance equipment.

[0006] In summary, it is found that the existing technology has at least the following technical problems: The existing bridge bottom inspection method has technical problems such as large amount of pre-operation preparation work, low overall construction efficiency, high safety risks, limited operating scope and low flexibility. Summary of the Invention

[0007] The purpose of the present invention is to provide a bridge bottom construction and maintenance trolley to solve the technical problems of the existing bridge bottom maintenance method, which has large pre-operation preparation work, low overall construction efficiency, high safety risks, limited operating scope and low flexibility.

[0008] The various technical effects that can be produced by the preferred technical solutions among the various technical solutions provided by the present invention are described in detail below.

[0009] In order to solve the above technical problems, the present invention provides the following technical solutions: The present invention provides a bridge bottom construction and maintenance trolley, comprising a movable suspension vehicle, a truss hanging basket channel suspended under the bridge and spanning the bridge bottom, a work platform, a safety ladder, a suspension cable and an electromagnetic swing stabilizer; the suspension cable is provided with two sets, one end of the two sets of suspension cables is respectively connected to the two end hooking points of the truss hanging basket channel, and the other ends of the two sets of suspension cables are respectively connected to the cable adjustment units provided in the mobile suspension vehicle on both sides of the bridge shoulder, for controlling the retraction or release of the suspension cables and adjusting the distance between the truss hanging basket channel and the bridge bottom; the work platform is provided on the truss hanging basket channel, for workers to climb up the work platform to approach the high position of the bridge bottom; the safety ladder One end of the full ladder is installed under the boom of the suspension vehicle, and the suspension cable is contained therein, and the other end is connected to the end channel opening of the truss basket channel; the electromagnetic swing stabilizer is installed on the boom of the suspension vehicle, extending from top to bottom and outward along the retraction or release path of the suspension cable; a plurality of electromagnetic adjustment cylinders are arranged in the electromagnetic swing stabilizer, and the telescopic ends of the plurality of electromagnetic adjustment cylinders extend out of the electromagnetic swing stabilizer and are connected to the suspension cable, which are used to offset the shaking generated when the workers pass through the safety ladder and the truss basket channel and perform bridge bottom operations in the truss basket, stabilize the posture of the suspension cable and the truss basket channel, and ensure passage and operation safety.

[0010] In one embodiment, a plurality of electromagnetic adjustment cylinders are arranged in a straight line from top to bottom inside the electromagnetic swing stabilizer, and the telescopic ends of the plurality of electromagnetic adjustment cylinders extend out of the electromagnetic swing stabilizer and are respectively connected to a plurality of adjustment nodes of the suspension cable from top to bottom.

[0011] In one embodiment, the electromagnetic swing stabilizer includes an extension frame with one end mounted on the end of the boom of the suspension vehicle, and the other end of the extension frame is extended outward from the boom of the suspension vehicle at an angle of 90+10 to 20° and extends downward to the end channel opening of the truss basket channel; a plurality of electromagnetic adjustment cylinders are mounted on the extension frame and are arranged at least at both ends and the middle of the extension frame along the length extension direction of the extension frame, and the two ends of the extension frame are respectively adjacent to the end where the safety ladder is connected to the boom and the hanging point of the truss basket channel.

[0012] In one embodiment, the suspension cable extends from the pulley at the end of the boom of the suspension vehicle and is extended to the end of the safety ladder adjacent to the truss basket channel as a single section, and from the end of the safety ladder adjacent to the truss basket channel to the two end connection points of the truss basket channel is a bundle section; the bundle section is bundled into four cables; the four cables are respectively connected to the four hanging points on the two horizontal sides and the two longitudinal ends of the connection point of the truss basket channel.

[0013] In one embodiment, a plurality of electromagnetic adjustment cylinders are arranged in a straight line from top to bottom along the extension frame to form a row of adjustment groups; a central adjustment group is provided on the extension frame along the single strand section of the suspension cable, and side adjustment groups are provided on both sides of the central adjustment group; and the head of the side adjustment group is adjacent to the tail of the single strand section of the suspension cable, and extends laterally downward along the bundle section of the suspension cable.

[0014] In one embodiment, the telescopic end of the electromagnetic adjustment cylinder of the central adjustment group is connected to the single strand section of the suspension cable to offset the displacement of the suspension cable and the truss basket channel inward and outward from both sides of the bridge.

[0015] In one embodiment, the side adjustment groups are provided with at least four rows, and are arranged in two rows on both sides of the central adjustment group; the telescopic ends of the electromagnetic adjustment cylinders of the four rows of the side adjustment groups are respectively connected to the four cables of the bundle section of the suspension cable, so as to offset the displacement of the suspension cable and the truss basket channel from the length direction of the bridge.

[0016] In one embodiment, safety frames are provided at both ends of the truss hanging basket channel, one end of the safety frame is connected to the end of the safety ladder, and the other end is installed on the floor of the truss hanging basket channel, so as to improve the safety of workers entering and exiting from the safety ladder to the truss hanging basket; the end channel opening of the truss hanging basket channel is the end where the safety frame is connected to the safety ladder.

[0017] In one embodiment, a driving unit is provided in the suspension vehicle, and the driving unit is respectively provided at the head and tail ends of the suspension vehicle, for controlling the front and rear displacement and displacement steering of the suspension vehicle on the bridge deck; the cable adjustment unit is provided in the middle of the suspension vehicle, and counterweight slots are provided on both sides of the cable adjustment unit; the boom is provided at the upper part of the suspension vehicle, and a pulley for guiding the suspension cable is provided in the boom.

[0018] In one embodiment, the drive unit includes a rear drive group and a front steering group; the rear drive group is arranged at the rear end of the frame of the suspension vehicle, and the rear drive group drives the rear wheels through a motor, a transmission chain and gears to control the forward and backward movement of the suspension vehicle; the front steering group is arranged at the front end of the frame of the suspension vehicle, and the front steering group drives the front wheels through a motor and a steering gear to control the forward and backward movement direction of the suspension vehicle.

[0019] The present invention provides a bridge bottom construction and maintenance trolley, which addresses the problems of existing bridge bottom maintenance methods, such as large pre-operation preparation workload, low overall construction efficiency, high safety risks, limited operating range, and low flexibility, and has the following beneficial effects: (1) By laying out a truss hanging basket channel at the bottom of the bridge and using movable hanging vehicles on the shoulders of the bridge on both sides, the truss hanging basket channel can be quickly laid out and recovered, which significantly reduces the amount of preparatory work before the operation, improves construction efficiency, and reduces interference with traffic; (2) The retraction and extension of the suspension cable are flexibly controlled by the cable adjustment unit, which can quickly adjust the distance between the truss hanging basket channel and the bridge bottom according to different bridge types, bridge heights and operation requirements, thereby improving the flexibility and adaptability of the operation and avoiding the structural limitations of traditional scaffolding. (3) A work platform is provided on the truss hanging basket channel, which enables workers to safely approach various parts of the bridge bottom to carry out maintenance work, and provides sufficient carrying capacity to carry inspection equipment and tools, thereby improving overall work efficiency and work range coverage; (4) By setting up a safety ladder and including the suspension cable, the safety of workers from the bridge deck to the truss hanging basket passage is ensured, and the overall structural layout is optimized to reduce additional occupied space and improve the convenience of maintenance operations; (5) The innovative use of electromagnetic swing stabilizers, which use multiple electromagnetic adjustment cylinders connected to the suspension cables, effectively offsets the shaking caused by workers walking and working on the safety ladder and truss hanging basket channel by precisely controlling the telescopic action, greatly improving the stability and operation safety of the trolley, and solving the swing problem that is common in suspended maintenance platforms; In summary, the present invention not only improves the safety and reliability of bridge bottom maintenance operations, but also realizes efficient, flexible and low-impact bridge bottom construction and maintenance operations, significantly improving the limitations of existing bridge operation and maintenance operations. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] In order to more clearly illustrate the technical solution of the present invention, the following is a brief introduction to the drawings required for use in the implementation. Obviously, the drawings described below are only some implementation methods of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0021] Figure 1 This is a front structural diagram of the hidden electromagnetic swing stabilizer of the bridge bottom construction and maintenance trolley of the present invention; Figure 2 This is a partially enlarged structural diagram of the hidden electromagnetic swing stabilizer of the bridge bottom construction and maintenance trolley of the present invention; Figure 3 It is a partial enlarged structural schematic diagram of one side of the bridge bottom construction and maintenance trolley of the present invention.

[0022] The accompanying drawings are numerals as follows: 1. Suspension vehicle; 11. Cable adjustment unit; 12. Drive unit; 121. Rear drive group; 122. Front steering group; 13. Counterweight slot; 14. Boom; 15. Pulley; 2. Truss hanging basket channel; 21. Safety frame; 3. Workbench; 4. Emergency ladder; 5. Suspension cable; 51. Single strand segment; 52. Beam segment; 6. Electromagnetic swing stabilizer; 61. Electromagnetic adjustment cylinder; 62. Extension rack; 7. Central Adjustment Group; 8. Lateral adjustment group; 9. Bridge; 91. Bridge deck; 92. Bridge bottom. DETAILED DESCRIPTION

[0023] The technical solutions in the embodiments of the present invention will be described clearly and completely below with reference to the accompanying drawings in the embodiments of the present invention.

[0024] With the increasing demand for refined management of bridge operation and maintenance, there is an urgent need to develop a new type of maintenance equipment that can flexibly move and accurately position itself in the space under the bridge, has the ability to carry maintenance personnel, equipment and tools, and can adapt to different bridge structures, cross obstacles and ensure safety and reliability, so as to improve the safety, reliability and efficiency of bridge maintenance operations.

[0025] The specific embodiment provides a bridge bottom construction and maintenance trolley, which includes a suspension vehicle, a truss basket channel suspended on and across the bridge bottom, a work platform, a safety ladder, a suspension cable and an electromagnetic swing stabilizer; two sets of suspension cables are respectively connected to the two ends of the truss basket channel and the suspension vehicle arranged on both sides of the bridge shoulder, and the retraction and extension of the suspension cables are controlled by a cable adjustment unit to adjust the distance between the truss basket channel and the bridge bottom; the work platform is arranged on the truss basket channel for workers to work close to the high position of the bridge bottom; one end of the safety ladder is installed under the suspension vehicle boom, and the other end is connected to the truss basket channel and contains the suspension cable; the electromagnetic swing stabilizer is arranged on the suspension vehicle boom, and is connected to the suspension cable through multiple electromagnetic adjustment cylinders to offset the shaking generated during operation and stabilize the posture of the suspension cable and the truss basket channel; efficient, safe and flexible bridge bottom maintenance operations are achieved; and the existing bridge bottom maintenance methods are effectively solved, which have the technical problems of large pre-operation preparation work, low overall construction efficiency, high safety risks, limited operating range and low flexibility.

[0026] The first implementation of the bridge bottom construction and maintenance trolley is as follows: Figures 1 to 3 As shown, it includes a movable suspension vehicle 1, a truss hanging basket channel 2 suspended under the bridge bottom 92 and spanning the bridge bottom 92, a work platform 3, a safety ladder 4, a suspension cable 5 and an electromagnetic swing stabilizer 6; the suspension cable 5 is provided with two sets, one end of the two sets of the suspension cables 5 is respectively connected to the two end hooking points of the truss hanging basket channel 2, and the other ends of the two sets of the suspension cables 5 are respectively connected to the cable adjustment units 11 provided in the mobile suspension vehicle 1 on both sides of the shoulder of the bridge deck 91, for controlling the retraction or release of the suspension cables 5 and adjusting the distance between the truss hanging basket channel 2 and the bridge bottom 92; the work platform 3 is provided on the truss hanging basket channel 2, for workers to climb up the work platform 3 to approach the height of the bridge bottom 92; one end of the safety ladder 4 is provided. One end is installed under the boom 14 of the suspension vehicle 1, and contains the suspension cable 5, and the other end is connected to the end channel opening of the truss basket channel 2; the electromagnetic swing stabilizer 6 is installed on the boom 14 of the suspension vehicle 1, extending from top to bottom and outward along the retraction or release path of the suspension cable 5; a plurality of electromagnetic adjustment cylinders 61 are provided in the electromagnetic swing stabilizer 6, and the telescopic ends of the plurality of electromagnetic adjustment cylinders 61 extend out of the electromagnetic swing stabilizer 6 and are connected to the suspension cable 5, which is used to offset the shaking generated when the workers pass through the safety ladder 4 and the truss basket channel 2 and perform bridge bottom 92 operations in the truss basket, stabilize the posture of the suspension cable 5 and the truss basket channel 2, and ensure passage and operation safety.

[0027] The present invention aims to solve the problems of the existing bridge bottom 92 maintenance method, such as large amount of pre-operation preparation work, low overall construction efficiency, high safety risk, limited operation range and low flexibility, and provides a bridge bottom construction and maintenance trolley with the following advantages: by laying out a truss hanging basket channel 2 on the bridge bottom 92 and utilizing the movable suspension vehicle 1 on the shoulders of the bridge deck 91 on both sides, the truss hanging basket channel 2 can be quickly laid out and recovered, which significantly reduces the amount of pre-operation preparation work, improves construction efficiency and reduces interference with traffic; the retraction and extension of the suspension cable 5 is flexibly controlled by the cable adjustment unit 11, and the distance between the truss hanging basket channel 2 and the bridge bottom 92 can be quickly adjusted according to different bridge types, bridge heights and operation requirements, thereby improving the flexibility and adaptability of the operation and avoiding the structural limitations of traditional scaffolding; a workbench 3 is provided on the truss hanging basket channel 2, so that operators can safely approach various parts of the bridge bottom 92 to carry out maintenance work, and provide Sufficient carrying capacity to carry detection equipment and tools, improve overall operation efficiency and operation range coverage; by setting up a safety ladder 4 and including the suspension cable 5 in it, the safety of the passage of workers from the bridge deck 91 to the truss basket channel 2 is guaranteed, and the overall structural layout is optimized, the additional occupied space is reduced, and the convenience of maintenance operations is improved; the electromagnetic swing stabilizer 6 is innovatively adopted, and multiple electromagnetic adjustment cylinders 61 are connected to the suspension cable 5. By precisely controlling the telescopic action, the shaking caused by the workers walking and working on the safety ladder 4 and the truss basket channel 2 is effectively offset, which greatly improves the stability and operation safety of the trolley and solves the swing problem that is common in suspended maintenance platforms; the present invention not only improves the safety and reliability of the bridge bottom 92 maintenance operation, but also realizes efficient, flexible and low-impact bridge bottom 92 construction and maintenance operations, significantly improving the limitations of the existing bridge 9 operation and maintenance operations.

[0028] As one optional implementation method: Regarding the specific structure and arrangement of the electromagnetic swing stabilizer 6, this embodiment Figure 3 As shown, a plurality of electromagnetic adjustment cylinders 61 are arranged in a straight line from top to bottom in the electromagnetic swing stabilizer 6, and the telescopic ends of the plurality of electromagnetic adjustment cylinders 61 extend out of the electromagnetic swing stabilizer 6 and are respectively connected to a plurality of adjustment nodes of the suspension cable 5 from top to bottom.

[0029] The electromagnetic adjustment cylinder 61 is an electric telescopic cylinder.

[0030] During application, a plurality of electromagnetic adjustment cylinders 61 are arranged in a straight line from top to bottom in the electromagnetic swing stabilizer 6, and the telescopic ends of the plurality of electromagnetic adjustment cylinders 61 are respectively connected to a plurality of adjustment nodes from top to bottom of the suspension cable 5. By applying different currents to each electromagnetic adjustment cylinder 61 to control its telescopic length, active tension or relaxation can be applied to the suspension cable 5; this structure not only suppresses the vibration of the suspension cable 5 in the vertical direction, but also can flexibly respond to external interferences such as wind force and vehicle vibration according to different working conditions and operation states of the bridge 9; this design solves the problem of violent swinging of the suspended work platform when people are walking or equipment is running, and significantly improves the stability of the work platform and the safety of operation.

[0031] Among them, multiple sensors are arranged on the suspension cable 5 to collect the vibration data of the suspension cable 5 in real time, and an intelligent vibration cancellation control system is set to adaptively adjust the actions of multiple electromagnetic adjustment cylinders 61 of the electromagnetic swing stabilizer 6, so as to realize active vibration suppression of the suspension cable 5 and full-process automated control.

[0032] Specifically, this embodiment Figure 3 As shown, the electromagnetic swing stabilizer 6 includes an extension frame 62 with one end mounted on the end of the boom 14 of the suspension vehicle 1, and the other end of the extension frame 62 is laterally extended from the boom 14 of the suspension vehicle 1 at an angle of 90+10 to 20°, and extends downward to the end channel opening of the truss basket channel 2; a plurality of electromagnetic adjustment cylinders 61 are mounted on the extension frame 62 and are arranged at least at both ends and the middle of the extension frame 62 along the length extension direction of the extension frame 62, and the two ends of the extension frame 62 are respectively adjacent to the end where the safety ladder 4 is connected to the boom 14 and the hanging point of the truss basket channel 2.

[0033] During operation, one end of the extended frame 62 is mounted on the end of the boom 14 of the suspension vehicle 1, and the other end extends downward to the end of the truss basket channel 2. The extended frame 62 is arranged at an outward angle of 90°+10° to 20°. This geometric arrangement enables the electromagnetic adjustment cylinders 61 to apply traction forces to the suspension cables 5 in different directions. The electromagnetic adjustment cylinders 61 are evenly distributed along the longitudinal direction of the extended frame 62, and are arranged at least at both ends and in the middle of the extended frame 62. This distribution provides more uniform and multi-directional tension control on the suspension cables 5, effectively offsetting the directional sway caused by wind flow under the bridge 92, vehicle traffic, and operational loads. This structure improves the mechanical performance and durability of the electromagnetic swing stabilizer 6 for the entire suspension system. The length, angle, or layout of the frame can be adjusted according to different bridge sizes to suit different construction environments.

[0034] Since, this implementation Figure 2As shown, the suspension cable 5 extends from the pulley 15 at the end of the boom 14 of the suspension vehicle 1, and extends to the end of the safety ladder 4 adjacent to the truss basket channel 2 to form a single section 51, and from the end of the safety ladder 4 adjacent to the truss basket channel 2 to the two ends of the truss basket channel 2 to the connection points are a bundle section 52; the bundle section 52 is bundled into four strands of cable; the four strands of cable are respectively connected to the four hanging points on both sides of the horizontal and longitudinal ends of the connection point of the truss basket channel 2.

[0035] Furthermore, regarding the specific method of connecting the single strand segment 51 and the beam segment 52 of the suspension cable 5 and the specific method of controlling and offsetting the shaking of the electromagnetic swing stabilizer 6, this embodiment is as follows: Figure 3 As shown, a plurality of electromagnetic adjustment cylinders 61 are arranged in a straight line from top to bottom along the extension frame to form a row of adjustment groups; a central adjustment group 7 is provided on the extension frame along the single strand section 51 of the suspension cable 5, and side adjustment groups 8 are provided on both sides of the central adjustment group 7; and the head of the side adjustment group 8 is adjacent to the tail of the single strand section 51 of the suspension cable 5, and extends laterally downward along the bundle section 52 of the suspension cable 5.

[0036] The telescopic end of the electromagnetic adjustment cylinder 61 of the central adjustment group 7 is connected to the single strand section 51 of the suspension cable 5, and is used to offset the displacement of the suspension cable 5 and the truss basket channel 2 in the inward and outward directions from both sides of the bridge 9; the side adjustment group 8 is provided with at least four rows, and is arranged in two rows on both sides of the central adjustment group 7; the telescopic ends of the electromagnetic adjustment cylinders 61 of the four rows of the side adjustment groups 8 are respectively connected to the four strands of the bundle section 52 of the suspension cable 5, and are used to offset the displacement of the suspension cable 5 and the truss basket channel 2 in the length direction of the bridge 9.

[0037] During application, since the cable 5 is divided from a single section 51 into four cables to form a bundle section 52 at the safety ladder 4 near the truss basket channel 2, and is respectively connected to the four hanging points of the truss basket channel 2, the single section 51 mainly bears the overall vertical tension of the cable 5, while the bundle section 52 shares the lateral and longitudinal loads of the truss basket channel 2 respectively; through the central adjustment group 7 connected to the single section 51, it can effectively offset the lateral swing of the cable 5 and the basket channel in the bridge 9, and four rows of side adjustment groups 8 are respectively connected to the four cables of the bundle section 52, which is used to actively suppress the longitudinal shaking of the bridge 9; this multi-point, multi-directional electromagnetic active control mechanism realizes full-dimensional suppression of the six-degree-of-freedom shaking of the suspension platform, significantly improving the accuracy and personnel safety during operation.

[0038] Regarding the setting of the safety passage connecting the truss hanging basket channel 2 and the safety ladder 4, this embodiment is as follows. Figure 1As shown, safety frames 21 are respectively provided at both ends of the truss hanging basket channel 2, one end of the safety frame 21 is connected to the end of the safety ladder 4, and the other end is installed on the floor of the truss hanging basket channel 2, for improving the safety of workers entering and exiting from the safety ladder 4 to the truss hanging basket; the end channel opening of the truss hanging basket channel 2 is the end where the safety frame 21 is connected to the safety ladder 4.

[0039] During application, the safety frames 21 set at both ends of the truss hanging basket channel 2 are connected to the end of the safety ladder 4. By setting a stable connecting tripod on the floor, a continuous safety passage is formed, and the workers can smoothly enter the truss hanging basket channel 2 through the safety ladder 4; this structure avoids the climbing risk caused by excessive height difference, and the safety frame 21 has a fence structure, which can prevent people from slipping and falling, greatly improving the safety of passage and operation.

[0040] Regarding the specific structure of the suspension vehicle 1, this embodiment Figure 2 As shown, a driving unit 12 is provided in the suspension vehicle 1, and the driving unit 12 is respectively provided at the head and tail ends of the suspension vehicle 1, for controlling the front and rear displacement and displacement steering of the suspension vehicle 1 on the bridge deck 91; the cable adjustment unit 11 is provided in the middle of the suspension vehicle 1, and counterweight slots 13 are provided on both sides of the cable adjustment unit 11; the boom 14 is provided at the upper part of the suspension vehicle 1, and a pulley 15 for guiding the suspension cable 5 is provided in the boom 14.

[0041] Among them, the drive unit 12 includes a rear drive group 121 and a front steering group 122; the rear drive group 121 is arranged at the rear end of the frame of the suspension vehicle 1, and the rear drive group 121 drives the rear wheels through a motor, a transmission chain and a gear to control the forward and backward movement of the suspension vehicle 1; the front steering group 122 is arranged at the front end of the frame of the suspension vehicle 1, and the front steering group 122 drives the front wheels through a motor and a steering gear to control the forward and backward movement direction of the suspension vehicle 1.

[0042] During application, the suspension vehicle 1 travels along the length direction of the bridge 9 on the bridge deck 91 through the drive unit 12, the rear drive group 121 provides traction to move the suspension vehicle 1 forward and backward, and the front steering group 122 is responsible for controlling the steering angle of the front wheels to achieve precise path following and flexible steering; the cable adjustment unit 11 in the middle of the suspension vehicle 1 can retract and extend the suspension cable 5 according to the different height requirements of the bridge bottom 92, and the counterweight slot 13 adjusts the center of gravity of the vehicle body according to different suspended loads to ensure the stability of the suspension vehicle 1; this structure not only improves the maneuverability of the trolley on the bridge deck 91, but also greatly reduces the interference of construction on traffic.

[0043] Through the above technical solution, the present invention can realize efficient, safe and precise construction and maintenance operations in the complex environment of the bridge bottom 92, overcoming the technical difficulties existing in the existing technology such as complex operation preparation, low construction efficiency, high operation risk, and limited operation scope, and provides an efficient and intelligent solution for the maintenance and construction field of bridge 9.

[0044] The technical features of the above embodiments may be combined arbitrarily. To simplify the description, not all possible combinations of the technical features in the above embodiments are described.

Claims

1. A bridge bottom construction and maintenance trolley, characterized in that: It includes a movable suspension vehicle, a truss hanging basket channel suspended under the bridge and spanning the bridge bottom, a work platform, a safety ladder, a suspension cable and an electromagnetic swing stabilizer; The suspension cables are provided with two sets, one end of each set of the suspension cables is connected to the two end hooking points of the truss hanging basket channel respectively, and the other end of each set of the suspension cables is connected to the cable adjustment unit provided in the mobile suspension vehicle provided on both sides of the bridge deck shoulder respectively, for controlling the retraction or extension of the suspension cables and adjusting the distance between the truss hanging basket channel and the bridge bottom; The workbench is arranged on the truss hanging basket channel, and is used by workers to climb onto the workbench to a high position close to the bottom of the bridge; One end of the safety ladder is installed under the boom of the suspension vehicle and contains the suspension cable, and the other end is connected to the end channel opening of the truss hanging basket channel; The electromagnetic swing stabilizer is mounted on the boom of the suspension vehicle and extends from top to bottom and outward along the retraction or release path of the suspension cable; A plurality of electromagnetic adjustment cylinders are arranged in the electromagnetic swing stabilizer, and the telescopic ends of the plurality of electromagnetic adjustment cylinders extend out of the electromagnetic swing stabilizer and are connected to the suspension cable, so as to offset the shaking generated when the workers pass through the safety ladder and the truss hanging basket channel and perform bridge bottom operations in the truss hanging basket, stabilize the posture of the suspension cable and the truss hanging basket channel, and ensure the safety of passage and operation.

2. The bridge bottom construction and maintenance trolley according to claim 1, characterized in that: A plurality of electromagnetic adjustment cylinders are arranged in a straight line from top to bottom in the electromagnetic swing stabilizer, and telescopic ends of the plurality of electromagnetic adjustment cylinders extend out of the electromagnetic swing stabilizer and are respectively connected to a plurality of adjustment nodes of the suspension cable from top to bottom.

3. The bridge bottom construction and maintenance trolley according to claim 2, characterized in that: The electromagnetic swing stabilizer includes an extension frame with one end mounted on the end of the boom of the suspension vehicle, and the other end of the extension frame extends outward from the boom of the suspension vehicle at an angle of 90+10 to 20 degrees and extends downward to the end channel opening of the truss basket channel; Multiple electromagnetic adjustment cylinders are installed on the extension frame and are arranged at least at both ends and the middle of the extension frame along the length extension direction of the extension frame. The two ends of the extension frame are respectively adjacent to the end where the safety ladder is connected to the boom and the hanging point of the truss hanging basket channel.

4. The bridge bottom construction and maintenance trolley according to claim 3, characterized in that: The suspension cable extends from the pulley at the end of the boom of the suspension vehicle to the end of the safety ladder adjacent to the truss hanging basket channel, which is a single strand section. The cable extends from the end of the safety ladder adjacent to the truss hanging basket channel to the connection points at both ends of the truss hanging basket channel, which is a bundle section. The bundle segment is divided into four cables; The four strands of cables are respectively connected to four hanging points on both sides of the horizontal direction and at both ends of the vertical direction of the hanging point of the truss hanging basket channel.

5. The bridge bottom construction and maintenance trolley according to claim 4, characterized in that: A plurality of electromagnetic adjustment cylinders are arranged in a straight line from top to bottom along the expansion rack to form a row of adjustment groups; A central adjustment group is provided on the expansion frame along the single strand section of the suspension cable, and side adjustment groups are provided on both sides of the central adjustment group; The head of the side adjustment group is adjacent to the tail of the single strand section of the suspension cable and extends laterally downward along the bundle section of the suspension cable.

6. The bridge bottom construction and maintenance trolley according to claim 5, characterized in that: The telescopic end of the electromagnetic adjustment cylinder of the central adjustment group is connected to the single strand section of the suspension cable, so as to offset the displacement of the suspension cable and the truss hanging basket channel inward and outward directions from both sides of the bridge.

7. The bridge bottom construction and maintenance trolley according to claim 6, characterized in that: The side adjustment groups are provided with at least four rows, and are arranged in two rows on both sides of the central adjustment group; The telescopic ends of the electromagnetic adjustment cylinders of the four rows of side adjustment groups are respectively connected to the four cables of the bundle section of the suspension cable, so as to offset the displacement of the suspension cable and the truss hanging basket channel along the length direction of the bridge.

8. The bridge bottom construction and maintenance trolley according to claim 7, characterized in that: Safety racks are provided at both ends of the truss hanging basket passage, one end of the safety rack is connected to the end of the safety ladder, and the other end is installed on the floor of the truss hanging basket passage, so as to improve the safety of workers entering and exiting from the safety ladder to the truss hanging basket; The terminal passage opening of the truss hanging basket passage is the end where the safety frame is connected to the safety ladder.

9. The bridge bottom construction and maintenance trolley according to claim 1, characterized in that: A drive unit is provided in the suspension vehicle, and the drive unit is respectively provided at the head and tail ends of the suspension vehicle, for controlling the front and rear displacement and displacement steering of the suspension vehicle on the bridge deck; The cable adjustment unit is provided in the middle of the suspension vehicle, and counterweight slots are provided on both sides of the cable adjustment unit; The boom is arranged on the upper part of the suspension vehicle, and a pulley for guiding the suspension cable is arranged inside the boom.

10. The bridge bottom construction and maintenance trolley according to claim 9, characterized in that: The drive unit includes a rear drive group and a front steering group; The rear drive group is arranged at the rear end of the frame of the suspension vehicle, and the rear drive group drives the rear wheels through the motor, transmission chain and gears to control the front and rear movement of the suspension vehicle; The front steering group is arranged at the front end of the frame of the suspension vehicle. The front steering group drives the front wheels through the motor and the steering gear to control the direction of the suspension vehicle moving forward and backward.

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