Prefabricated box culvert auxiliary installation device and method

Abstract

The application discloses a prefabricated box culvert auxiliary installation device and method, which comprises a concrete foundation provided with a groove, a hoisting structure, a plurality of cantilever structures distributed on both sides of the prefabricated box culvert and connected with the prefabricated box culvert, a support frame and a horizontal displacement piece, each cantilever structure is connected with the support frame through the horizontal displacement piece, each cantilever structure can be independently driven, and the moving direction of the cantilever structure is along the direction perpendicular to the groove direction, a walking structure arranged in the groove, a height adjusting piece arranged on the walking structure, a positioning structure for determining the horizontal position and the vertical height of the prefabricated box culvert, a control system, the hoisting structure is always connected with the prefabricated box culvert during the installation process of the box culvert, the whole weight of the prefabricated box culvert is borne when the horizontal position of the prefabricated box culvert is finely adjusted, and part of the weight of the prefabricated box culvert is borne when the prefabricated box culvert is placed on the walking structure and moves with the walking structure, so that the installation of the box culvert is efficiently completed under the condition of ensuring the butt joint precision.

Description

Technical Field

[0001] This invention relates to the field of precast box culvert installation technology, and in particular to an auxiliary installation device and method for precast box culverts. Background Technology

[0002] Precast box culverts are a key structural element used in drainage, road, and bridge engineering. They are typically made of concrete or reinforced concrete, have large cross-sections, are prefabricated in a factory, and then installed and connected on the construction site. With the continuous development of the construction and engineering fields, the requirements for the installation quality and efficiency of precast box culverts are becoming increasingly higher. At present, there are still some challenges in the installation process of precast box culverts, including: (1) accurate positioning and connection: precast box culverts must be accurately positioned and connected to ensure that they fit perfectly in their final positions to form a continuous structure; (2) quality control: during the installation process, it is necessary to ensure that the quality of the box culverts is maintained to avoid structural problems in the future; (3) safety: the installation of precast box culverts may require large hoisting equipment, which involves safety risks and requires strict safety measures and operations. In the traditional precast box culvert installation process, the hoisting, positioning, movement, and connection of precast box culverts are all carried out manually on the installation site, which inevitably leads to large errors and safety risks. Moreover, the positioning during connection is time-consuming and the construction period is long.

[0003] In the prior art, patent CN 114991030 A discloses a precise spatial positioning system and method for precast box culverts. The system includes a walking and lifting mechanism, which is movable along a trench and is connected to the bottom of the box culvert to be positioned via an adjustable support; a positioning mechanism, which is parallel to the trench and positioned on a concrete foundation, connecting the box culvert to be positioned and allowing it to move in a direction perpendicular to the trench; and a remote control mechanism, which is communicatively connected to both the walking and lifting mechanism and the positioning mechanism, for controlling their start and stop operations. The above method, combining the operation of the traveling lifting mechanism and the positioning mechanism, can achieve precise positioning of the precast box culvert to be positioned. However, since precast box culverts made of concrete or reinforced concrete generally have a large weight, when adjusting the left and right position of the precast box culvert using the positioning mechanism in this scheme, it is necessary to push the precast box culvert already placed on the traveling lifting mechanism so that it moves relative to the traveling lifting mechanism in a direction perpendicular to the trench. At this time, the traveling mechanism and the lifting mechanism will be subjected to a large lateral force, which is prone to damage. Moreover, this lateral force may cause wear between the traveling lifting mechanism and the guide rail, and there is a risk of the traveling lifting mechanism derailing. At the same time, in this scheme, the weight of the precast box culvert is mainly borne by the traveling lifting mechanism, which will reduce the traveling speed of the traveling lifting mechanism to a certain extent and affect the installation efficiency of the precast box culvert.

[0004] In view of this, it is necessary to design an auxiliary installation device and method for prefabricated box culverts to solve the above problems. Summary of the Invention

[0005] The purpose of this invention is to provide an auxiliary installation device and method for precast box culverts that can efficiently complete the docking of precast box culverts while ensuring docking accuracy.

[0006] To achieve the above-mentioned objectives, the present invention provides an auxiliary installation device for prefabricated box culverts, comprising:

[0007] A concrete foundation, on which a trench is provided;

[0008] The hoisting structure is used for hoisting precast box culverts. It includes a support frame and several cantilever structures distributed on both sides of the precast box culvert and connected to the precast box culvert. Each cantilever structure is connected to the support frame through a horizontal displacement component, so that each cantilever structure can be driven independently, and the movement direction of the cantilever structure is perpendicular to the trench direction.

[0009] A walking structure is set in the trench to drive the precast box culvert to move along the axial direction of the trench for box culvert docking. The walking structure is equipped with a height adjustment component for adjusting the height of the precast box culvert relative to the concrete foundation.

[0010] Positioning structure, used to determine the horizontal position and vertical height of precast box culverts;

[0011] The control system is used to control the operation of the hoisting structure, traveling structure, and positioning structure;

[0012] The hoisting structure is always connected to the precast box culvert during the installation process, so as to bear the full weight of the precast box culvert when fine-tuning its horizontal position, and to bear part of its weight when the precast box culvert is placed on the traveling structure and moves with it.

[0013] As a further improvement of the present invention, the support frame includes a plurality of crossbeams spaced apart along the axial direction of the precast box culvert and longitudinal beams for connecting adjacent crossbeams. At least two crossbeams are provided, and at least two longitudinal beams are provided, and the longitudinal beams are symmetrically arranged on the crossbeams along the axial direction of the precast box culvert.

[0014] As a further improvement of the present invention, the horizontal displacement member is a horizontal telescopic member, which is disposed on the crossbeam. One end of the cantilever structure is slidably disposed on the crossbeam and connected to the horizontal telescopic member. The cantilever structure moves along the crossbeam axially by the extension and retraction of the horizontal telescopic member.

[0015] As a further improvement of the present invention, the end of the cantilever structure away from the crossbeam is connected to a fixing member for fixing the relative position of the cantilever structure and the precast box culvert. The fixing member is provided with an elastic device. When the fixing member is inserted into the pre-reserved fixing hole on the precast box culvert, the cantilever structure drives the fixing member to move until the elastic device is in a compressed state. The rebound force of the elastic device keeps the cantilever structure and the precast box culvert relatively fixed.

[0016] As a further improvement of the present invention, the sidewall of the trench is provided with a guide groove along the axial direction of the trench.

[0017] As a further improvement of the present invention, the walking structure includes a walking part and an orientation fixing member disposed in the guide groove. The orientation fixing member can move along the guide groove so that the walking structure always maintains a fixed distance from the side wall of the groove during walking.

[0018] As a further improvement of the present invention, the walking structure is also provided with a pressure sensor for detecting the magnitude of the pressure on the walking structure when the precast box culvert is placed on the walking structure.

[0019] As a further improvement of the present invention, the support frame is provided with a connector for connecting the crane.

[0020] An installation method for an auxiliary installation device for precast box culverts includes the following steps:

[0021] S1. The precast box culvert is clamped and fixed using a cantilever structure. The hoisting structure is moved by controlling the crane, thereby moving the position of the precast box culvert. At the same time, the horizontal orientation of the precast box culvert is detected by the positioning structure, and the horizontal position and vertical height of the precast box culvert are initially adjusted.

[0022] S2. Adjust the height of the walking structure so that its top surface is higher than the top surface of the concrete foundation.

[0023] S3. Place the precast box culvert on the traveling structure and keep the hoisting structure in the hoisting state. Check the horizontal position of the precast box culvert again. If the precast box culvert is offset in the horizontal direction, make the hoisting structure bear the full weight of the precast box culvert and adjust the position of the cantilever structure to fine-tune the horizontal position of the precast box culvert.

[0024] S4. After the horizontal position of the precast box culvert is adjusted, part of the weight of the precast box culvert is borne by the hoisting structure and the remaining weight is borne by the traveling structure, so that the precast box culvert and the traveling structure can maintain relative stability during the traveling process.

[0025] S5. When the precast box culvert is moved along the axial direction of the trench to the docking position by the hoisting structure and the traveling structure, the height of the traveling structure is adjusted so that the bottom surface of the precast box culvert contacts the top surface of the concrete foundation. The vertical position of the precast box culvert is determined by the positioning structure. Then, the hoisting structure and the traveling structure are used to control the precast box culvert to continue moving until the docking of the box culvert is completed.

[0026] S6. Adjust the height of the walking structure to separate it from the precast box culvert, adjust the cantilever structure to loosen the precast box culvert, and repeat steps S1-S5 to continue the installation of the subsequent precast box culverts.

[0027] As a further improvement of the present invention, in step S3, the specific operation of adjusting the position of the cantilever structure is to move all the cantilever structures simultaneously and in the same direction by the same distance, so as to drive the precast box culvert to adjust left and right.

[0028] The beneficial effects of this invention are:

[0029] 1. The hoisting structure of this invention is used for adjusting the vertical and horizontal positions of the precast box culvert, and also serves as a load-bearing component. When the precast box culvert is placed on the traveling structure, it bears part of the weight of the precast box culvert, ensuring relative stability between the precast box culvert and the traveling structure under its remaining weight. This prevents the traveling structure from being too heavy due to the overall weight of the precast box culvert, which would affect its traveling speed. Thus, while ensuring the stability of the connection between the traveling structure and the precast box culvert, the precast box culvert can be quickly moved to the docking position. During the docking process, when the precast box culvert is placed on the top surface of the concrete foundation, the hoisting structure bears most of the weight of the precast box culvert, reducing the friction between the precast box culvert and the top surface of the concrete foundation. This prevents the adjusted position of the box culvert from being affected by excessive friction, ensuring the docking accuracy of the box culvert. Furthermore, it reduces the wear of the top surface of the concrete foundation on the bottom surface of the precast box culvert when the precast box culvert moves on the top surface of the concrete foundation, ensuring the overall quality of the precast box culvert.

[0030] 2. When the height of the traveling structure is adjusted to the point where the precast box culvert is placed on top of the concrete foundation, the contact area between the precast box culvert and the top of the concrete foundation will be supported by the concrete foundation. At this time, an upward force is applied by the lifting structure. While keeping the box culvert in contact with the top of the concrete foundation, the weight of the precast box culvert is mostly borne by the lifting structure. Since the force exerted by the precast box culvert on the concrete foundation is relatively small, the friction between the box culvert and the concrete foundation will also be significantly reduced. When the traveling structure moves the precast box culvert to its docking position, there will be no significant friction between the box culvert and the concrete foundation affecting the position of the adjusted box culvert, ensuring the docking accuracy of the box culvert and avoiding wear on the bottom surface of the box culvert due to friction.

[0031] 3. By symmetrically setting at least two longitudinal beams on two crossbeams, this invention can ensure the stability of the hoisting structure during hoisting. At the same time, when the cantilever is finely adjusted to the position of the precast box culvert, it can avoid the overall center of gravity of the hoisting structure with the precast box culvert shifting due to the change of the cantilever position, which would cause the crossbeams to tilt significantly, thus ensuring the stability of the precast box culvert during installation.

[0032] 4. The adjustable cantilever of the present invention can adjust the left and right positions of the precast box culvert during the installation process, and, in conjunction with the positioning structure, position the precast box culvert horizontally. At the same time, by adjusting the distance between the two cantilever, the precast box culvert auxiliary installation device of the present invention can also be used for the installation of precast box culverts of different sizes, effectively improving the applicability of the precast box culvert auxiliary installation device.

[0033] 5. The precast box culvert auxiliary installation device of the present invention is simple to operate, accurate in positioning, and highly efficient in installation. It is suitable for the installation of precast box culverts in projects with tight schedules. At the same time, the installation of precast box culverts can be completed through remote control, eliminating the need for on-site personnel and effectively improving the safety of workers. Attached Figure Description

[0034] Figure 1 This is a schematic diagram of the overall structure of the auxiliary installation device for precast box culverts.

[0035] Figure 2 This is a schematic diagram of the connection structure between the hoisting structure and the precast box culvert.

[0036] Figure 3 This is a schematic diagram of the cantilever structure at the end furthest from the crossbeam.

[0037] Figure 4 This is a side view of the trench.

[0038] Figure 5 This is a partial structural diagram of the walking structure.

[0039] Figure 6 This is a top view of the walking structure.

[0040] Figure 7 This is a schematic diagram of the installation structure of the positioning system.

[0041] Figure 8 This is a top view of the positioning system.

[0042] Figure 9 This is a schematic diagram of the installation of precast box culverts.

[0043] Figure Labels

[0044] 10. Concrete foundation; 11. Trench; 12. Guide groove; 21. Crossbeam; 211. Main body of telescopic component; 212. Telescopic rod; 213. Slide groove; 214. Slide rail; 22. Longitudinal beam; 23. Cantilever structure; 231. Slider; 232. Fixing component; 233. First pressure sensor; 234. Spring; 31. Traveling wheel; 311. Steel beam; 32. Roller; 33. Height adjustment component; 34. Shim; 35. Second pressure sensor; 41. Horizontal positioning sensor; 42. Vertical positioning sensor; 50. Steel wire rope; 60. Precast box culvert; 61. Fixing hole. Detailed Implementation

[0045] To make the objectives, technical solutions, and advantages of this invention clearer, the invention will be described in detail below with reference to the accompanying drawings and specific embodiments.

[0046] It should also be noted that, in order to avoid obscuring the invention with unnecessary details, only the structures and / or processing steps closely related to the present invention are shown in the accompanying drawings, while other details that are not closely related to the present invention are omitted.

[0047] Additionally, it should be noted that the terms “comprising,” “including,” or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.

[0048] like Figure 1 As shown, the present invention provides an auxiliary installation device for precast box culverts, comprising:

[0049] A concrete foundation 10, on which a trench 11 is provided;

[0050] The hoisting structure, used for hoisting the precast box culvert 60, includes a support frame and several cantilever structures 23 distributed on both sides of the precast box culvert 60 and connected to it. The cantilever structures 23 are mounted on the support frame and can move relative to the support frame in a direction perpendicular to the trench 11. Each cantilever structure 23 is connected to the support frame through a horizontal displacement member, so that each cantilever structure 23 can be driven independently. The movement direction of the cantilever structure 23 is perpendicular to the trench 11, so as to finely adjust the horizontal position of the precast box culvert 60 in the direction perpendicular to the trench 11 by moving the cantilever structure 23. At the same time, the distance between adjacent cantilever structures 23 is adjusted to clamp and fix precast box culverts 60 of different specifications.

[0051] A walking structure is provided in the trench 11 so that when the precast box culvert 60 is placed on the walking structure, the walking structure drives the precast box culvert 60 to move along the axial direction of the trench 11 to connect the box culverts. The walking structure is provided with a height adjustment component 33 for adjusting the height of the precast box culvert 60 relative to the concrete foundation 10.

[0052] The positioning structure is used to determine the horizontal position and vertical height of the precast box culvert 60;

[0053] The control system is used to control the operation of the hoisting structure, traveling structure, and positioning structure;

[0054] The hoisting structure is always connected to the precast box culvert 60 during the installation process, so as to bear the full weight of the precast box culvert 60 when fine-tuning the horizontal position of the precast box culvert 60, and to bear part of the weight of the precast box culvert 60 when it is placed on the traveling structure and moves with the traveling structure.

[0055] Specifically, such as Figure 2 As shown, the support frame includes several crossbeams 21 spaced apart along the axial direction of the precast box culvert 60 and longitudinal beams 22 for connecting adjacent crossbeams 21. In this embodiment, there are two crossbeams 21 and two longitudinal beams 22, and the longitudinal beams 22 are symmetrically arranged on the crossbeams 21 along the axial direction of the precast box culvert 60, so that the crossbeams 21 and longitudinal beams 22 form a stable support structure, thereby ensuring the stability of the hoisting structure during the hoisting process. In addition, when the precast box culvert 60 is finely adjusted in the direction perpendicular to the trench 11 by moving the cantilever structure 23 relative to the support frame, since the moving distance of the cantilever structure 23 is much smaller than the length of the crossbeams 21, the overall center of gravity of the hoisting structure suspending the precast box culvert 60 will not change significantly. At this time, the stable structure formed by the symmetrically arranged longitudinal beams 22 and crossbeams 21 can alleviate the change in the overall center of gravity of the hoisting structure suspending the precast box culvert 60 caused by the movement of the cantilever structure 23 to a certain extent, so that the hoisting structure can always remain relatively stable during the installation process.

[0056] Specifically, each crossbeam 21 has two cantilever structures 23 symmetrically arranged along the axial direction of the precast box culvert 60 to clamp and fix the precast box culvert 60; the horizontal displacement component is a horizontal telescopic component, which is located in the middle of the crossbeam 21 and includes a telescopic component body 211 and telescopic rods 212 arranged on both sides of the telescopic component body 211 for adjusting the position of the cantilever structure 23 relative to the crossbeam 21; the crossbeams 21 on both sides of the telescopic component body 211 are respectively provided with vertically penetrating grooves 213 along the axial direction of the crossbeam 21, and the sides of the grooves 213 are also provided with parallel slide rails 214. One end of the cantilever structure 23 passing through the groove 213 is connected to a slider 231, which is slidably connected to the slide rails 214 and connected to the telescopic rods 212, so that when the horizontal telescopic component controls the slider 231 to move, the slider 231 drives the cantilever structure 23 to move along the axial direction of the crossbeam 21.

[0057] Specifically, such as Figure 3 As shown, the end of the cantilever structure 23 away from the crossbeam 21 is connected to a fixing member 232 for fixing the relative position of the cantilever structure 23 and the precast box culvert 60. An elastic device is sleeved on the fixing member 232. The precast box culvert 60 has a fixing hole 61 for easy insertion of the fixing member 232. The diameter of the fixing hole 61 is slightly larger than the diameter of the fixing member 232. In this embodiment, the elastic device is a spring 234. One end of the spring 234 away from the side of the precast box culvert 60 is fixed to the fixing member 232, and the other end can extend and retract freely. It can be compressed when the fixing member 232 moves closer to the precast box culvert 60. After the fixing member 232 is inserted into the fixing hole 61, the horizontal telescopic member controls the movement of the cantilever structure 23, which drives the fixing member 232 to move closer to the side of the precast box culvert 60 until the spring 234 is in a compressed state. Then, the rebound force of the spring 234 can be used to keep the cantilever structure 23 and the precast box culvert 60 relatively fixed. In addition, a first pressure sensor 233 for detecting the pressure on the spring 234 is also connected to the fixing member 232. When the first pressure sensor 233 detects that the pressure on the spring 234 reaches a preset value, it indicates that the cantilever structure 23 has been firmly connected to the precast box culvert 60. At this time, the telescopic rod 212 no longer moves. The telescopic rod 212 acts as a connector to fix the upper end of the cantilever structure 23 to the telescopic body, that is, the relative position of the cantilever structure 23 and the crossbeam 21 is fixed, and the lower end of the cantilever structure 23 is relatively fixed to the precast box culvert 60, so that the two cantilever structures 23 clamp and fix one end of the precast box culvert 60.

[0058] Specifically, such as Figures 4-6As shown, a guide groove 12 is provided on the sidewall of the trench 11 along the axial direction of the trench 11. The walking structure includes a walking part and a positioning fixing member disposed in the guide groove 12. The walking part includes two walking wheels 31 spaced apart along the axial direction of the trench 11. The two walking wheels 31 are connected by a steel beam 311. In this embodiment, the positioning fixing member is two rollers 32 spaced apart, and the rollers 32 are perpendicularly connected to the walking wheels 31. When the walking wheels 31 move along the axial direction of the trench 11, the rollers 32 move along the guide groove 12, so that the walking structure always maintains a fixed distance from the sidewall of the trench 11. In this embodiment, two trenches 11 are provided on the concrete foundation 10, and guide grooves 12 are provided on one side of the two trenches 11 close to each other. Two rollers 32 are provided in each guide groove 12. In other embodiments, the positioning fixing member can also be a slider 231, which limits the walking structure by sliding within the guide groove 12.

[0059] Specifically, the height adjustment component 33 is positioned above the traveling wheel 31, and a pad 34 for placing the precast box culvert 60 is positioned above the height adjustment component 33. The pad 34 is covered with a soft, wear-resistant cloth to reduce damage to the contact surface between the box culvert and the traveling structure. A second pressure sensor 35 is also provided on the height adjustment component 33 to detect the pressure exerted on the traveling structure when the precast box culvert 60 is placed on it. In this embodiment, the height adjustment component 33 is a hydraulic device.

[0060] Specifically, the walking structure is powered by a drive unit.

[0061] Specifically, such as Figures 7-8 As shown, the positioning structure includes a horizontal positioning sensor 41 and a vertical positioning sensor 42. The sensors emit infrared light to detect obstacles along the emission direction and transmit the signal to the control system to determine the orientation of the precast box culvert 60. Two horizontal positioning sensors 41 are provided, one for detecting the left and one for detecting the right orientation of the precast box culvert 60. In this embodiment, the horizontal positioning sensors 41 are detachably installed at the fixing holes 61 on both sides of the first precast box culvert section 60, and the vertical positioning sensor 42 is detachably installed on the top of the first precast box culvert section 60 for positioning detection during subsequent docking and installation of the precast box culvert 60.

[0062] Specifically, the support frame is equipped with connectors for connecting the crane; the support frame and the crane are connected by a steel wire rope 50.

[0063] like Figure 9 As shown, an installation method for an auxiliary installation device for precast box culverts includes the following steps:

[0064] S1. The precast box culvert 60 is clamped and fixed using the cantilever structure 23. The movement of the hoisting structure is controlled by the crane, so that the precast box culvert 60 moves closer to the walking structure. At the same time, the horizontal orientation of the precast box culvert 60 is detected by the positioning structure, and the horizontal position of the precast box culvert 60 is initially adjusted by the overall movement of the hoisting structure.

[0065] S2. Adjust the height of the walking structure so that its top surface is higher than the top surface of the concrete foundation 10, so that when the precast box culvert 60 is placed on the walking structure, there is a certain gap between the precast box culvert 60 and the top surface of the concrete foundation 10.

[0066] S3. Place the precast box culvert 60 on the traveling structure and keep the hoisting structure in the hoisting state so that the hoisting structure bears part of the weight of the precast box culvert 60. Check the horizontal position of the precast box culvert 60 again through the positioning structure. If the precast box culvert 60 is offset in the horizontal direction, adjust the hoisting structure so that the hoisting structure bears the full weight of the precast box culvert 60. Move the cantilever structure 23 relative to the support frame to drive the precast box culvert 60 to move along the axis perpendicular to the trench 11 and fine-tune the horizontal position of the precast box culvert 60.

[0067] S4. After the horizontal position of the precast box culvert 60 is adjusted, the hoisting structure is adjusted so that part of the weight of the precast box culvert 60 is borne by the hoisting structure and the remaining weight is borne by the traveling structure. This ensures that the precast box culvert 60 and the traveling structure can maintain relative stability during the travel process under partial gravity. At the same time, it avoids the traveling structure from being too heavy due to the precast box culvert 60 being borne by the traveling structure when the entire weight of the precast box culvert 60 is borne by the traveling structure.

[0068] S5. When the precast box culvert 60 is moved axially along the trench 11 to the docking position by the hoisting structure and the traveling structure, the height of the traveling structure is adjusted by the height adjustment component 33 so that the bottom surface of the precast box culvert 60 contacts the top surface of the concrete foundation 10. Then, the hoisting structure and the traveling structure are used to control the precast box culvert 60 to continue moving until the box culvert docking is completed.

[0069] S6. Adjust the height of the walking structure to separate it from the precast box culvert 60, adjust the cantilever structure 23 to loosen the precast box culvert 60, and repeat steps S1-S5 to continue the installation of the subsequent precast box culvert 60.

[0070] S7. After all the precast box culverts 60 have been assembled, the horizontal and vertical directions of the box culvert as a whole can be inspected through the positioning structure.

[0071] Specifically, when the precast box culvert 60 is placed on the traveling structure, the pressure on the traveling structure is detected by the second pressure sensor 35, so as to adjust the hoisting structure as needed.

[0072] Specifically, the operation of finely adjusting the horizontal position of the precast box culvert 60 using the cantilever structure 23 is as follows: the telescopic rod 212 moves the same distance in the same direction at the same time, so that the cantilever structure 23 drives the precast box culvert 60 to move left and right for adjustment.

[0073] The above embodiments are only used to illustrate the technical solutions of the present invention and are not intended to limit it. Although the present invention has been described in detail with reference to preferred embodiments, those skilled in the art should understand that modifications or equivalent substitutions can be made to the technical solutions of the present invention without departing from the spirit and scope of the technical solutions of the present invention.

Claims

1. An auxiliary installation device for precast box culverts, characterized in that, include: A concrete foundation, on which a trench is provided; The hoisting structure is used for hoisting precast box culverts. It includes a support frame and several cantilever structures distributed on both sides of the precast box culvert and connected to the precast box culvert. Each cantilever structure is connected to the support frame through a horizontal displacement component, so that each cantilever structure can be driven independently, and the movement direction of the cantilever structure is perpendicular to the trench direction. A traveling structure, installed in the trench, is used to move the precast box culvert along the axial direction of the trench for box culvert docking. The traveling structure is equipped with a height adjustment component for adjusting the height of the precast box culvert relative to the concrete foundation. The traveling structure is also equipped with a pressure sensor for detecting the pressure on the traveling structure when the precast box culvert is placed on it. When the precast box culvert is placed on the traveling structure, the pressure sensor detects the pressure on the traveling structure so that the hoisting structure can be adjusted as needed. Positioning structure, used to determine the horizontal position and vertical height of precast box culverts; The control system is used to control the operation of the hoisting structure, traveling structure, and positioning structure; The hoisting structure is always connected to the precast box culvert during the installation process, so as to bear the full weight of the precast box culvert when fine-tuning its horizontal position, and to bear part of its weight when the precast box culvert is placed on the traveling structure and moves with it.

2. The precast box culvert auxiliary installation device according to claim 1, characterized in that: The support frame includes several crossbeams spaced apart along the axial direction of the precast box culvert and longitudinal beams for connecting adjacent crossbeams. There are at least two crossbeams and at least two longitudinal beams, and the longitudinal beams are symmetrically arranged on the crossbeams along the axial direction of the precast box culvert.

3. The precast box culvert auxiliary installation device according to claim 2, characterized in that: The horizontal displacement component is a horizontal telescopic component, which is installed on the crossbeam. One end of the cantilever structure is slidably installed on the crossbeam and connected to the horizontal telescopic component. The cantilever structure moves along the crossbeam axially through the extension and retraction of the horizontal telescopic component.

4. The precast box culvert auxiliary installation device according to claim 3, characterized in that: The end of the cantilever structure away from the crossbeam is connected to a fixing member for fixing the relative position of the cantilever structure and the precast box culvert. The fixing member is equipped with an elastic device. When the fixing member is inserted into the pre-drilled fixing hole on the precast box culvert, the cantilever structure drives the fixing member to move until the elastic device is in a compressed state. The rebound force of the elastic device keeps the cantilever structure and the precast box culvert relatively fixed.

5. The precast box culvert auxiliary installation device according to claim 1, characterized in that: The trench sidewall is provided with guide grooves along the trench axis.

6. The precast box culvert auxiliary installation device according to claim 5, characterized in that: The walking structure includes a walking part and an orientation fixing member disposed in the guide groove. The orientation fixing member can move along the guide groove so that the walking structure always maintains a fixed distance from the side wall of the groove during walking.

7. The precast box culvert auxiliary installation device according to claim 1, characterized in that: The support frame is equipped with connectors for connecting the crane.

8. The installation method of the precast box culvert auxiliary installation device according to claim 1, characterized in that, Includes the following steps: S1. The precast box culvert is clamped and fixed using a cantilever structure. The hoisting structure is moved by controlling the crane, thereby moving the position of the precast box culvert. At the same time, the horizontal orientation of the precast box culvert is detected by the positioning structure, and the horizontal position and vertical height of the precast box culvert are initially adjusted. S2. Adjust the height of the walking structure so that its top surface is higher than the top surface of the concrete foundation. S3. Place the precast box culvert on the traveling structure and keep the hoisting structure in the hoisting state. Check the horizontal position of the precast box culvert again. If the precast box culvert is offset in the horizontal direction, make the hoisting structure bear the full weight of the precast box culvert and adjust the position of the cantilever structure to fine-tune the horizontal position of the precast box culvert. S4. After the horizontal position of the precast box culvert is adjusted, part of the weight of the precast box culvert is borne by the hoisting structure and the remaining weight is borne by the traveling structure, so that the precast box culvert and the traveling structure can maintain relative stability during the traveling process. S5. When the precast box culvert is moved along the axial direction of the trench to the docking position by the hoisting structure and the traveling structure, the height of the traveling structure is adjusted so that the bottom surface of the precast box culvert contacts the top surface of the concrete foundation. The vertical position of the precast box culvert is determined by the positioning structure. Then, the hoisting structure and the traveling structure are used to control the precast box culvert to continue moving until the docking of the box culvert is completed. S6. Adjust the height of the walking structure to separate it from the precast box culvert, adjust the cantilever structure to loosen the precast box culvert, and repeat steps S1-S5 to continue the installation of the subsequent precast box culverts.

9. The installation method of the precast box culvert auxiliary installation device according to claim 8, characterized in that, In step S3, the specific operation of adjusting the position of the cantilever structure is to move all the cantilever structures simultaneously and in the same direction by the same distance, so as to drive the precast box culvert to adjust left and right.

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