A carrying function vehicle and a bridge erecting machine carrying system

Abstract

The application discloses a carrying function vehicle and a bridge erecting machine carrying system. The carrying function vehicle comprises a vehicle body, a lifting system, a translation module, an auxiliary conveying module and a first jacking module. The vehicle body is provided with a ground walking mechanism. The lifting system is arranged on the vehicle body and is used for lifting or lowering the vehicle body to the ground. The upper end surface of the vehicle body is provided with a horizontal bearing surface. The translation module is embedded in the bearing surface and is used for bearing heavy objects and moving the heavy objects across the bearing surface. The auxiliary conveying module is embedded on one side of the bearing surface and is close to one end of the vehicle body and is used for bearing heavy objects and conveying the heavy objects to the two ends of the vehicle body. The first jacking module is embedded on one side. The carrying function vehicle can realize the overall lifting and height adjustment of the vehicle body and the bridge beam body of the bridge erecting machine, the lifting and horizontal movement of the bridge beam body on the carrying vehicle and the conveying. The design is relatively ingenious, the bridge erecting machine can be quickly transported, the erection efficiency of the bridge erecting machine on the site is improved, and the overall transfer operation efficiency and flexibility of the bridge erecting machine are improved.

Description

Technical Field

[0001] This application relates to the field of bridge erection equipment, specifically to a transport vehicle and a bridge erection machine transport system. Background Technology

[0002] Before and after the bridge erecting machine is set up on-site, relevant vehicles are needed to transport the bridge beams and other components. Currently, existing transport vehicles all use a conventional cab + flatbed configuration, which is relatively simple, only capable of loading and transporting the bridge beams and other components. However, during the on-site erection process, since bridge erecting machines often use a multi-segment beam assembly method, after the beams and other components are transported to the site, they need to be arranged in a straight line and their ends connected and fixed. In this process, it is inevitable to adjust the relative position between the two beam segments. Generally, on-site operations mostly rely on cranes for adjustment, or on transport vehicles to continuously adjust and move laterally on the road to achieve effective connection of the two beam segments. The whole process is time-consuming, labor-intensive, and inefficient. At the same time, when raising the beam to install the outriggers, a crane is also needed to lift the beam to a certain height, which involves a large amount of work and relatively high safety risks. Furthermore, when unloading the bridge beams from the transport vehicle, cranes or other tools are often used to separate the beams from the vehicle before removing them. Overall, this involves a large workload and low operational efficiency. It is particularly problematic in emergency repair situations, such as bridge collapses.

[0003] Therefore, it is necessary to develop a transport vehicle and a bridge erecting machine transport system to solve the above-mentioned technical problems. Utility Model Content

[0004] To address the aforementioned technical problems, this utility model provides a transport vehicle and a bridge erecting machine transport system, which solves the problem that existing transport vehicles have limited functions, cannot effectively participate in the on-site erection of bridge beams by the bridge erecting machine, and have low overall erection efficiency.

[0005] The present invention solves the above-mentioned technical problems mainly through the following technical solutions: A transport vehicle is provided, comprising a vehicle body, a lifting system, a translation module, an auxiliary conveying module, and a first lifting module. The vehicle body is equipped with a ground walking mechanism. The lifting system is mounted on the vehicle body and is used to raise or lower the vehicle body to the ground. The upper surface of the vehicle body is set as a horizontal bearing surface. The translation module is embedded in the bearing surface and is used to carry heavy objects and move the heavy objects along a direction spanning the bearing surface. The auxiliary conveying module is embedded on one side of the bearing surface and close to one end of the vehicle body, and is used to carry heavy objects and move the heavy objects toward both ends of the vehicle body. The first lifting module is embedded on one side and close to the other end of the vehicle body, and is used to carry heavy objects and move the heavy objects up or down onto the bearing surface.

[0006] Furthermore, the bearing surface is a rectangular surface, with upwardly protruding retaining edges on both long sides.

[0007] Furthermore, the lifting system includes multiple sets of hydraulic lifting devices, which are respectively installed at intervals on the four sides of the vehicle body.

[0008] Furthermore, the hydraulic lifting device includes a vertically arranged hydraulic cylinder with its extension and retraction end pointing downwards and connected to a support base.

[0009] Furthermore, the translation module includes a translation support plate and a translation mechanism. The support surface has a first groove that spans it. The translation mechanism is installed in the first groove. The translation support plate is embedded in the upper part of the first groove, and its upper surface is higher than the height of the support surface. The translation mechanism is connected to the lower end of the translation support plate and is used to drive the support plate to move between the two ends of the first groove.

[0010] Furthermore, the auxiliary conveying module includes multiple conveying rollers. A second groove is provided on one side of the bearing surface near one end. The multiple conveying rollers are all horizontally arranged in the second groove. The two ends of the conveying rollers are rotatably assembled with the two side walls of the second groove, respectively. The tops of the multiple conveying rollers are all on the same horizontal plane, and the height of this horizontal plane is higher than the height of the bearing surface. The vehicle body is equipped with a rotating mechanism that is connected to the conveying rollers and drives them to rotate.

[0011] Furthermore, the first lifting module includes a lifting support plate and a lifting device. A third groove is provided on one side of the bearing surface near its other end. The lifting device is installed in the third groove. The lifting support plate is installed on the upper part of the lifting device. The lifting device is used to drive the lifting support plate to rise above the third groove or to descend and fit into the third groove.

[0012] Furthermore, the lifting device is a scissor-type hydraulic lifting platform.

[0013] Furthermore, the ground walking mechanism includes two rows of wheels rotatably mounted on the lower sides of the vehicle body.

[0014] The beneficial effects of this utility model's packing vehicle are: This transport vehicle can lift, move laterally, and remove the bridge beam on its upper part, effectively assisting the bridge erecting machine in its construction and improving operational efficiency.

[0015] A bridge erecting machine carrying system is also provided, including a carrying vehicle head and a carrying function vehicle. The carrying vehicle head has a carrying flatbed, and a second lifting module is embedded on the carrying flatbed. A vehicle traction structure is detachably connected between the carrying vehicle head and the carrying function vehicle.

[0016] The beneficial effects of the bridge erecting machine transport system of this utility model are as follows: It enables flexible transportation and rapid on-site assembly of the bridge erecting machine, improving the overall efficiency and flexibility of the bridge erecting machine's relocation operations. Attached Figure Description

[0017] To more clearly illustrate the technical solutions in the embodiments of this utility model, the drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0018] Figure 1 This is a side view of the structure of the packing vehicle provided in this embodiment of the utility model; Figure 2 This is a schematic diagram of the structure of the lifting system of the carrying vehicle provided in this embodiment of the utility model after the vehicle body is raised; Figure 3 This is a diagram showing the usage status of the bridge erecting machine transport system provided in this embodiment of the utility model; Figure 4 This is a schematic diagram of the structure of the transport vehicle head in the bridge erecting machine transport system provided in this embodiment of the utility model. Detailed Implementation

[0019] The technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of this application, and not all of them. All other embodiments obtained by those skilled in the art based on the embodiments of this application without creative effort are within the scope of protection of this application.

[0020] In the description of this application, it should be understood that the terms "center," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," and "counterclockwise," etc., indicating orientation or positional relationships based on the orientation or positional relationships shown in the accompanying drawings, are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this application. Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Thus, features defined with "first" and "second" may explicitly or implicitly include one or more of the stated features. In the description of this application, "a plurality of" means two or more, unless otherwise explicitly specified.

[0021] In the description of this application, it should be noted that, unless otherwise expressly specified and limited, the terms "installation," "connection," and "linking" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection, an electrical connection, or a connection that allows communication between them; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication between two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this application according to the specific circumstances.

[0022] In this application, unless otherwise expressly specified and limited, "above" or "below" the second feature can include direct contact between the first and second features, or contact between the first and second features through another feature between them. Furthermore, "above," "over," and "on top" of the second feature includes the first feature being directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature includes the first feature being directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.

[0023] The following disclosure provides many different embodiments or examples for implementing different structures of this application. To simplify the disclosure, specific examples of components and arrangements are described below. Of course, these are merely examples and are not intended to limit the scope of this application. Furthermore, reference numerals and / or letters may be repeated in different examples; such repetition is for simplification and clarity and does not in itself indicate a relationship between the various embodiments and / or arrangements discussed. In addition, various specific examples of processes and materials are provided in this application, but those skilled in the art will recognize the application of other processes and / or the use of other materials.

[0024] For details, please refer to Figure 1 and Figure 2 This application provides a pack carrier vehicle, which mainly includes: The vehicle body 41 has an overall rectangular shape and a horizontal bearing surface on its upper surface.

[0025] The lifting system 42 is mounted on the vehicle body 41. Its main purpose is to lift the vehicle body 41 to a certain height so that the objects loaded on the load-bearing surface can be lifted to the required height.

[0026] A translation module 43 is provided on the bearing surface of the vehicle body 41. The translation module 43 has a movement action in the width direction of the vehicle body 41, that is, across the bearing surface, so as to drive the object carried on its upper part to move between the two sides of the bearing surface of the vehicle body 41.

[0027] An auxiliary conveying module 44 is provided on the bearing surface of the vehicle body 41. This auxiliary conveying module 44 can assist in conveying the objects carried on it to both ends of the vehicle body 41. In particular, for long and narrow components, the auxiliary conveying module 44 can deliver them from either end of the vehicle body 41, and its function is similar to that of a belt conveyor.

[0028] A ground walking mechanism is provided at the lower part of the vehicle body 41, which enables the vehicle body 41 to travel along the ground.

[0029] A first lifting module 45 is provided on the bearing surface of the vehicle body 41. The first lifting module 45 can lift the object loaded on it to the required height or lower it onto the bearing surface.

[0030] In this embodiment, a generator set or battery is built into the vehicle body 41 to provide a power source for the operation of the electrical components of the bridge erecting machine. At the same time, the main control system of the bridge erecting machine is also integrated into the vehicle body 41, thus making the functions of this transport vehicle integrated into multiple functions such as deformation assembly, bridge erecting machine movement, power source provision, and control center.

[0031] The entire transport vehicle possesses multiple functions, including the translation, lifting, and conveying of objects on the load-bearing surface, as well as the lifting of the entire vehicle. It is particularly effective in assisting with the transportation and on-site construction of bridge erecting machines, enabling rapid transport of the machines while improving on-site construction efficiency and enhancing the overall relocation efficiency and flexibility of the bridge erecting machine. Details are as follows: Taking a bridge erecting machine consisting of three beams—front beam, middle beam, and rear beam—as an example, during transportation, the middle beam and front beam can be placed side by side and loaded onto the bearing surface of the vehicle body 41. Specifically, one end of the middle beam and front beam can be mounted on the bearing surface, and the other end can be mounted on another transport vehicle. The middle beam can be pre-placed on one side of the bearing surface equipped with the auxiliary conveying module 44, and the front beam can be loaded on the other side of the bearing surface. During on-site construction, the rear beam has been pre-transported and initially erected (specifically, the rear beam is supported above the bridge deck by the auxiliary support legs at the rear end of the rear beam and the middle support leg assembly installed on them). The transport vehicle is driven to the front end of the erected rear beam, and the rear end of the middle beam is connected and fixed. Then, the transport vehicle moves forward. Since the rear beam and the middle beam are fixed, the lower part of the middle beam rests on the auxiliary conveying module 44. Therefore, the auxiliary conveying module 44 will assist the middle beam to move backward relative to the transport vehicle. Next, the auxiliary support legs at the rear end of the rear beam and the transport vehicle serve as fulcrums, and the connected rear beam and middle beam can be stably supported. At this time, the middle support leg assembly can move along the rear beam to the front end of the middle beam. The rear support leg assembly then lands to replace the transport vehicle in supporting the front end of the middle beam. The transport vehicle can then separate from the middle beam and continue to move forward, so that the rear end of the front beam is in front of the middle beam. In this state, the front beam and the middle beam are staggered in the direction across the beam body. At this time, the translation module can be used to... Block 43 drives the beam to move horizontally towards the bearing surface of the vehicle body 41 until the front beam and the middle beam are aligned. Then, the front end of the middle beam is connected and fixed to the rear end of the front beam. Next, the middle support leg assembly moves along the middle beam towards the rear end of the rear beam, and after reaching its position, it is supported on the ground. Since the rear end of the front beam rests on the transport vehicle, the entire transport vehicle is raised and lowered under the drive of the lifting system 42. Simultaneously, the middle support leg assembly extends, thereby lifting the front, middle, and rear beams to a high position. Afterwards, the bearing surface... The first lifting module 45, in conjunction with the middle support leg assembly, can further lift the assembled beam a short distance, allowing the front end of the front beam to meet the space requirements for the front support assembly to descend. Then, the front support leg assembly located at the front end of the front beam can be placed on the ground for support (or, after passing through the arch, placed on a pier where the bridge deck has not yet been erected to support the entire beam). Simultaneously, the rear support leg assembly at the rear end of the rear beam is placed on the ground. The transport vehicle can then be lowered to the ground via the lifting system 42, separating from the beam and driving away. In addition to transporting beams carrying the bridge erecting machine, the entire transport vehicle can also serve as a landing point for rapid lateral movement, forward and backward output of the beam, and beam erection and lifting. Compared to traditional transport vehicles, it is more powerful, significantly shortening the bridge erecting machine's relocation and erection cycle, and improving the overall efficiency and flexibility of the bridge erecting machine's relocation operations.

[0032] In some embodiments, the bearing surface has the same shape as the vehicle body 41 and is designed as a rectangular surface. Two parallel guard edges 411 protrude upwards on both sides of the long side of the bearing surface. When the beam is loaded on the bearing surface, the two guard edges 411 restrict the side boundary of the bearing surface, which to a certain extent prevents the beam from sliding out and shifting through the side of the bearing surface.

[0033] In some embodiments, the lifting system 42 includes multiple sets of hydraulic lifting devices 421, which are installed at intervals on the four sides of the vehicle body 41. When the vehicle is in a normal driving state, the lower ends of the multiple sets of hydraulic lifting devices 421 are suspended in the air. When the vehicle body 41 needs to be lifted in the air, the multiple sets of hydraulic lifting devices 421 extend synchronously, and their lower ends can fall to the ground. After further extension, the vehicle body 41 will be lifted into the air.

[0034] Specifically, four sets of hydraulic lifting devices 421 can be set up and distributed at the four right angles of the vehicle body 41. The advantage of this layout is that it can meet the lifting function of the vehicle body 41 while avoiding occupying the positions of the two ends and the side walls of the vehicle body 41.

[0035] In some other embodiments, in order to improve the stability of the hydraulic lifting device 421, a lateral pushing and pulling drive device is provided in the side wall of the vehicle body 41 corresponding to the hydraulic lifting device 421. The drive device is connected to the hydraulic lifting device 421. The hydraulic lifting device 421 can be moved a certain distance away from the side wall of the vehicle body 41 by the lateral pushing and pulling drive device. Then, the vehicle body 41 can be lifted into the air by using the hydraulic lifting device 421. The lateral pushing and pulling drive device can increase the footprint of multiple sets of hydraulic lifting devices 421 after the lower end lands, providing a more stable support effect for the transport vehicle.

[0036] In this embodiment, the hydraulic lifting device 421 can be a suitable hydraulic cylinder. The telescopic end of the hydraulic cylinder faces downward and is connected to a relatively large horizontal support base 422. The cylinder body of the hydraulic lifting device 421 is mounted on the side wall of the vehicle body 41, or connected to the drive end of the aforementioned lateral push-pull drive device. The drive device can be a hydraulic cylinder and a sheet metal part that is laterally sliding and telescopically mounted on the side wall of the vehicle body 41.

[0037] Specifically, the support base 422 includes a support plate and a sleeve disposed on the upper end of the support plate. The outer side wall of the sleeve is circumferentially connected to the support plate with multiple reinforcing ribs. The lower end of the hydraulic lifting device 421 is inserted into the sleeve and is connected and fixed to the sleeve.

[0038] In some embodiments, the translation module 43 includes a translation support plate and a translation mechanism. A first groove spanning the support surface is formed therethrough. The translation mechanism is mounted in the first groove. The translation support plate is embedded in the upper part of the first groove, with its upper surface slightly higher than the height of the support surface. The translation mechanism is connected to the lower end of the translation support plate and is used to drive the translation support plate to move between the two ends of the first groove. This allows objects mounted on the translation support plate to be moved and adjusted in a direction spanning the vehicle body 41.

[0039] In this embodiment, the translation mechanism may include a slide rail, a slider, and a power mechanism. The slide rail is disposed in the first groove, either directly on the bottom of the groove or on a mounting plate at the bottom of the groove. The slide rail faces the direction spanning the vehicle body 41. The slider is slidably mounted on the slide rail. The power mechanism is connected to the slider, driving it to move along the slide rail. A translation support plate is mounted on the upper end of the slider. The power mechanism may be a hydraulic cylinder or a combination of a rack, pinion, and motor. Specifically, the rack is parallel to the slide rail and fixedly assembled like the slide rail. The gear is mounted on the motor shaft, and the motor is mounted on the lower end of the slider. The gear meshes with the rack, and when the motor runs, it moves the gear along the rack, thus realizing the translation of the slider along the slide rail.

[0040] In some other embodiments, a first height adjustment device can be provided at the lower end of the translation mechanism. This first height adjustment device can be a device with a similar function, such as a hydraulic jack, so that the maximum downward height of the translation support plate can be lower than the height of the support surface. The object can fall on the support surface. When translation is required, the upper surface of the translation support plate is first adjusted to be higher than the support surface using the first height adjustment device, and then the translation mechanism is used for translation.

[0041] In some embodiments, the auxiliary conveying module 44 includes a plurality of conveying rollers 441, with a second groove formed on one side of the bearing surface near one end. The plurality of conveying rollers 441 extend along a direction spanning the vehicle body 41 and are disposed in the upper part of the second groove. The two ends of each conveying roller 441 are rotatably fitted to the two side walls of the second groove. The tops of the plurality of conveying rollers 441 are all on the same horizontal plane, and the height of this horizontal plane is slightly higher than the height of the bearing surface. Referring to the foregoing description, during the forward movement of the transport vehicle and the relative backward movement of the center beam, the lower part of the center beam rolls into contact with the upper part of the plurality of conveying rollers 441, thus forming a rolling friction relationship between the center beam and the conveying rollers 441. Compared to directly dragging the center beam along the bearing surface, this results in less friction, lower energy consumption, and reduced wear on the center beam.

[0042] In other embodiments, multiple conveying rollers 441 can be rotatably mounted on a U-shaped frame, which is placed in the second groove. A second height adjustment device is provided at the bottom of the U-shaped frame. This second height adjustment device can be a hydraulic jack or a similar device, so that the maximum downward height of the conveying rollers 441 can be lower than the height of the bearing surface. When an object needs to be output from the end of the vehicle body 41, the upper surface of the translation bearing plate is first adjusted to be higher than the bearing surface using the second height adjustment device, slightly lifting the beam. Then, the vehicle body 41 is moved, allowing the beam and the conveying rollers 441 to move easily relative to the vehicle body 41 under rolling contact.

[0043] In some embodiments, the first lifting module 45 includes a lifting support plate 451 and a lifting device 452. A third groove is formed on one side of the bearing surface near its other end. The lifting device 452 is installed in the third groove, and the lifting support plate 451 is installed on the upper part of the lifting device 452. When lifting is not required, the lifting support plate 451 rests in the third groove, and its upper surface is level with or slightly lower than the surface of the bearing surface. When lifting is required, the lifting device 452 drives the lifting support plate 451 to rise above the third groove, thereby raising the beam to a certain height.

[0044] The lifting device 452 can be a scissor-type hydraulic lifting platform of a suitable model. Alternatively, it can be a combination of multiple vertically arranged hydraulic cylinders, with the extension rods of the multiple hydraulic cylinders connected and fixed upward to the lifting support plate 451.

[0045] In this embodiment, the ground walking mechanism of the vehicle body 41 includes two rows of wheels 412 rotatably mounted on the lower parts of both sides of the vehicle body 41. Specifically, groove-shaped areas for mounting the wheels 412 can be opened on the lower parts of both sides of the vehicle body 41, and the wheels 412 are embedded in the groove-shaped areas on the corresponding sides.

[0046] Of course, in some other embodiments, the wheel 412 can be a combination of tracks and wheels to enable movement on special road surfaces.

[0047] Specifically, please refer to Figure 3 and Figure 4This embodiment also provides a bridge erecting machine transport system, including a transport vehicle head 46 and a transport function vehicle. The transport vehicle head 46 is a conventional vehicle head, with a transport flatbed added behind it. The upper surface of the transport flatbed is generally lower than the load-bearing surface of the transport function vehicle. During transportation, the two ends of the middle beam (A in the figure) and the front beam (B in the figure) are respectively mounted on the load-bearing surface of the transport function vehicle and the transport flatbed. A second lifting module 47 is embedded in the transport flatbed. The second lifting module 47 can work with the first lifting module 45 to lift the beams mounted on the upper part of both. A conventional vehicle traction structure can be set between the transport vehicle head 46 and the transport function vehicle, allowing the transport function vehicle to move under the traction of the transport vehicle head 46 or other vehicles. It should be noted that the height of the loading flatbed of the loading tractor 46 is lower than the height of the load-bearing surface of the loading vehicle. The main purpose of this is to allow the space defined by this height difference to accommodate the front support leg assembly (represented by C in the diagram) at the front end of the front beam. During transportation, the front ends of both the middle beam and the front beam are supported on the upper part of the front support leg assembly. Other components of the bridge erecting machine can be erected between the loading tractor 46 and the loading vehicle.

[0048] In this embodiment, the vehicle traction structure is an existing product, such as a pin-type traction structure between the cab and the cargo box.

[0049] In this embodiment, the second lifting module 47 adopts a scissor-type hydraulic lifting platform of a suitable model, or it can be a combination of multiple hydraulic cylinders, with a plate on the upper part serving as a plate to support objects. Its specific structure can be referred to as the first lifting module 45, and the two structures can be the same.

[0050] In the above embodiments, the descriptions of each embodiment have different focuses. For parts not described in detail in a certain embodiment, please refer to the relevant descriptions in other embodiments.

[0051] The foregoing has provided a detailed description of a carrying vehicle and a bridge erecting machine carrying system provided in the embodiments of this application. Specific examples have been used to illustrate the principles and implementation methods of this application. The description of the above embodiments is only for the purpose of helping to understand the technical solutions and core ideas of this application. Those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features. These modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of this application.

Claims

1. A transport vehicle, characterized in that: The system includes a vehicle body (41), a lifting system (42), a translation module (43), an auxiliary conveying module (44), and a first lifting module (45). The vehicle body (41) is equipped with a ground walking mechanism. The lifting system (42) is installed on the vehicle body (41) and is used to lift or lower the vehicle body (41) to the ground. The upper surface of the vehicle body (41) is set as a horizontal bearing surface. The translation module (43) is embedded in the bearing surface and is used to carry heavy objects and move them along the direction across the bearing surface. The auxiliary conveying module (44) is embedded on one side of the bearing surface and close to one end of the vehicle body (41) and is used to carry heavy objects and move them towards both ends of the vehicle body (41). The first lifting module (45) is embedded on one side and close to the other end of the vehicle body (41) and is used to carry heavy objects and move them up or down onto the bearing surface.

2. The transport vehicle according to claim 1, characterized in that: The bearing surface is a rectangular surface, with upward-protruding flanges (411) on both long sides.

3. A transport vehicle according to claim 1, characterized in that: The lifting system (42) includes multiple sets of hydraulic lifting devices (421), which are installed at intervals on the four sides of the vehicle body (41).

4. A transport vehicle according to claim 3, characterized in that: The hydraulic lifting device (421) includes a vertically arranged hydraulic cylinder with its extension end pointing downward and connected to a support base (422).

5. A transport vehicle according to claim 1, characterized in that: The translation module (43) includes a translation support plate and a translation mechanism. The support surface has a first groove that spans it. The translation mechanism is installed in the first groove. The translation support plate is embedded in the first groove, and its upper surface is higher than the height of the support surface. The translation mechanism is connected to the lower end of the translation support plate and is used to drive the support plate to move between the two ends of the first groove.

6. A transport vehicle according to claim 1, characterized in that: The auxiliary conveying module (44) includes multiple conveying rollers (441). A second groove is provided on one side of the bearing surface near one end. The multiple conveying rollers (441) are all arranged across the second groove. The two ends of the conveying rollers (441) are rotatably assembled with the two side walls of the second groove. The tops of the multiple conveying rollers (441) are all on the same horizontal plane, and the height of the horizontal plane is higher than the height of the bearing surface.

7. A transport vehicle according to claim 1, characterized in that: The first lifting module (45) includes a lifting support plate (451) and a lifting device (452). A third groove is provided on one side of the bearing surface near its other end. The lifting device (452) is installed in the third groove. The lifting support plate (451) is installed on the upper part of the lifting device (452). The lifting device (452) is used to drive the lifting support plate (451) to rise above the third groove or to descend and fit into the third groove.

8. A transport vehicle according to claim 7, characterized in that: The lifting device (452) is a scissor-type hydraulic lifting platform.

9. A transport vehicle according to any one of claims 1 to 8, characterized in that: The ground walking mechanism includes two rows of wheels (412) rotatably mounted on the lower sides of the vehicle body (41).

10. A bridge erecting machine transport system, characterized in that: It includes a packer head (46) and a packer vehicle as described in any one of claims 1 to 9, wherein the packer head (46) has a packer flatbed, a second lifting module (47) is mounted on the packer flatbed, and a vehicle traction structure is detachably connected between the packer head (46) and the packer vehicle.

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