A butt joint installation device and butt joint construction method for hoisting and positioning a steel box girder

Abstract

This invention relates to the field of steel box girder hoisting technology and discloses a docking and installation device for positioning and hoisting steel box girders. The device includes a hanger for docking with a crane and four docking components. Each docking component is mounted on the hanger and can move horizontally. Each docking component includes a docking plate and two adjusting components. Hooks are provided on both the docking plate and the adjusting components, and the positions of the hooks on the adjusting components are adjustable. The device can be flexibly adjusted according to the aerial posture and docking position of the steel box girder, reducing the need for manual assistance and the frequency of crane boom drive, reducing the workload of the team, improving docking and installation efficiency, and during hoisting, stress dispersion treatment can be applied to the lifting lug area to reduce deformation of the steel box girder, improve hoisting stability, reduce safety hazards, and ensure subsequent use effectiveness.

Description

Technical Field

[0001] This invention relates to the field of steel box girder hoisting technology, specifically to a docking installation device and docking construction method for positioning and hoisting steel box girders. Background Technology

[0002] Steel box girders, also known as steel plate box girders, are a type of structure frequently used in the construction of long-span bridges. They are mainly used in the construction of bridges with large spans and are named for their box-like shape. In the bridge construction process, given the generally long length of bridges, steel box girders are usually divided into several segments to facilitate hoisting operations.

[0003] In existing technologies, the hoisting of steel box girders involves using a crane with multi-point hooks to connect with the lugs on the steel box girder, followed by hoisting and transportation. The placement and connection of the steel box girder are completed by adjusting the crane boom accordingly.

[0004] However, the above method has the following drawbacks in actual use: it is difficult to control the aerial posture and docking position of the steel box girder during hoisting and positioning, requiring manual assistance. The crane boom needs to be repeatedly adjusted according to the position of the steel box girder, resulting in a large workload for the team and low efficiency. In addition, stress concentration occurs in the lifting lug area of ​​the steel box girder during hoisting, which can easily cause deformation, affecting the stability of hoisting, increasing safety hazards and affecting the subsequent use effect. Summary of the Invention

[0005] The purpose of this invention is to provide a docking installation device and docking construction method for hoisting and positioning steel box girders, so as to solve the problems mentioned in the background art.

[0006] To achieve the above objectives, the present invention provides the following technical solution: a docking installation device for hoisting and positioning steel box girders, comprising a hanger for docking with a crane, and four docking components, wherein the docking components are mounted on the hanger and can move horizontally; wherein each docking component comprises a docking plate and two adjusting components, and hooks are provided on both the docking plate and the adjusting components, and the positions of the hooks on the adjusting components are adjustable.

[0007] Preferably, the docking component further includes a hydraulic lifter, and a sling is provided between the hydraulic lifter and the docking plate.

[0008] Preferably, the hydraulic lifter has two vertically distributed hydraulic rods on its outer side, and the end of the hydraulic rod away from the hydraulic lifter is slidably connected to the inside of the docking plate.

[0009] Preferably, the hydraulic lifter is fitted with a movable ring inside the docking plate on its outer side, and the end of the hydraulic rod is fixedly connected to the movable ring.

[0010] Preferably, the adjusting component includes a piston tube and a piston rod, one end of the piston rod is fitted with a piston plate, the piston rod is slidably connected to the inside of the piston tube through the piston plate, and the other end of the piston rod is connected to a corresponding hook.

[0011] Preferably, a conduit is installed on the piston tube, and a solenoid valve is provided on the outside of the conduit.

[0012] Preferably, the piston tube has two rotating shafts on its outer side, and one end of each rotating shaft is rotatably connected to a slider that is slidably connected to the inside of the docking plate.

[0013] Preferably, a servo motor is installed inside the docking plate, and a gear is installed on the output shaft of the servo motor through a coupling. Two racks mesh with the outer side of the gear, and one of the sliders is fixedly connected to the outer side of one of the racks.

[0014] Preferably, an abutment is provided below the hanger.

[0015] This invention also provides a docking construction method for hoisting and positioning steel box girders, the specific steps of which are as follows: S1. First, connect the crane hook to the hanging ring on the hanger. The crane boom drives the hanger to move to a suitable position so that the hook is in the corresponding area on the steel box girder. Drive the hydraulic rod at the corresponding point and adjust the position of the hydraulic lifter and the corresponding docking plate so that the hook matches the hanging lug on the steel box girder. S2. Next, connect the middle hook on the docking plate to the corresponding lug on the steel box girder, and connect the hooks on both sides of the docking plate to the lugs on both sides, forming a three-point docking in a single area. Then, complete the hook docking of the four areas in sequence. S3. The crane operates, pulling the gantry and steel box girder into the air. At this time, the contact parts are in contact with the steel box girder for anti-shaking treatment. Then, observe the attitude of the steel box girder. If the docking attitude is normal, drive the crane boom to move the steel box girder closer to the installation support. S4. If the steel box girder has an abnormal attitude in the air, start the hydraulic lifting device at the corresponding point to pull the corresponding sling to complete the attitude adjustment of the steel box girder. After the attitude adjustment is normal, place the steel box girder on the installation support. S5. The user observes the docking situation and checks for any offset. If an attitude offset occurs, the hydraulic rod at the corresponding point can be used to drive in the corresponding direction, so that the hydraulic lift pulls the corresponding sling and makes fine adjustments to the attitude of the steel box girder until there is no docking deviation. S6. If a positional deviation occurs, activate all hydraulic rods in the corresponding orientation to make fine adjustments to the horizontal deviation of the steel box girder until there is no misalignment. S7. After the steel box girder is accurately placed, it is quickly reinforced using high-strength bolts and welding. Then, the hooks are separated from the corresponding lugs, and the crane drives the gantry to reset for subsequent hoisting operations.

[0016] Compared with the prior art, the beneficial effects of the present invention are as follows: This invention increases the number of docking points by setting up docking plates and adjusting components, enabling three-point connections within a single area to form multiple triangular zones. Furthermore, the position and angle of the hooks can be adjusted according to the location of the lugs, thus dispersing stress in the docking area, reducing deformation of the steel box girder, improving hoisting stability, reducing safety hazards, and ensuring subsequent use effectiveness. This invention, by setting up a hydraulic lifter and hydraulic rods with different driving directions, can make diversified adjustments to the height and lifting angle of the slings at various points. It uses vertical adjustment of the slings to achieve large-scale posture adjustment of the steel box girder, and combines sling angle changes to achieve small-scale posture adjustment of the steel box girder. This reduces the need for manual assistance and the frequency of crane boom drive, reduces the workload of the team, and improves the efficiency of docking and installation. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of a preferred embodiment of the docking installation device and docking construction method for steel box girder hoisting and positioning provided by the present invention. Figure 2 This is a schematic diagram of the structure of the hanger and the contacting member provided by the present invention; Figure 3 A cross-sectional schematic diagram of the hanger provided by the present invention; Figure 4 This is a schematic diagram of the structure of the movable ring and hydraulic rod provided by the present invention; Figure 5 This is a schematic diagram of the docking plate and servo motor provided by the present invention; Figure 6 This is a schematic diagram of the piston tube and servo motor provided by the present invention; Figure 7 A cross-sectional schematic diagram of the piston rod provided for this invention. Figure 8 A schematic diagram of the structure of the abutment provided by the present invention; Figure 9 This is a schematic diagram of the piston tube after movement provided by the present invention; Figure 10 This is a schematic diagram of the single-sided hydraulic lifter provided by the present invention after it has moved.

[0018] In the diagram: 100, hanger; 110, contacting part; 200, connecting part; 210, connecting plate; 211, servo motor; 212, gear; 213, rack; 220, adjusting part; 221, piston tube; 222, piston rod; 223, guide tube; 224, slider; 230, hydraulic lifter; 231, hydraulic rod; 232, movable ring. Detailed Implementation

[0019] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0020] Please see Figures 1-10 As shown, a docking installation device for hoisting and positioning steel box girders includes a hanger 100 for docking with a crane, and four docking components 200. The docking components 200 are mounted on the hanger 100 and can move horizontally. Each docking component 200 includes a docking plate 210 and two adjusting components 220. Hooks are provided on both the docking plate 210 and the adjusting components 220, and the positions of the hooks on the adjusting components 220 are adjustable.

[0021] When connecting the steel box girder with the hooks, the single connecting plate 210 can be connected with the corresponding lug. Then, the user can connect the remaining lugs on both sides of the connected lug with the adjusting piece 220 to complete the three-point connection. The connection area forms multiple triangular areas, so that the three lugs can share the load and complete the stress distribution. After all the hooks are connected with the corresponding lugs, the crane drives the gantry 100 to move and lift and transport the steel box girder to complete the subsequent connection operation. It should be noted that the two adjusting parts 220 on the single docking plate 210 have the same adjustment movement path during actual use, so that the hooks on both sides form a symmetrical state with the hooks on the docking plate 210, ensuring the stability of the force at the three points.

[0022] The docking component 200 also includes a hydraulic lifter 230, and a sling is provided between the hydraulic lifter 230 and the docking plate 210; Two vertically distributed hydraulic rods 231 are provided on the outer side of the hydraulic lifter 230. The end of the hydraulic rod 231 away from the hydraulic lifter 230 is slidably connected to the inside of the docking plate 210.

[0023] The hydraulic lifting device 230, in conjunction with the hydraulic rod 231, is used to control the slings, thereby changing the aerial attitude of the steel box girder. When a significant deviation occurs in the aerial attitude: the hydraulic lift 230 at the corresponding point is activated, causing the single-point or multi-point slings to be stretched. This results in a corresponding change in the center of gravity of the steel box girder, completing the corresponding attitude adjustment. Figure 10 As shown, the left-side dual hydraulic lifters 230 drive the sling lifting motion. In this state, the hooks and lugs on the docking plate 210 form a fixed area, which will follow the changes in the steel box girder at a corresponding angle. When a slight deviation occurs in the aerial posture: the hydraulic rod 231 in the corresponding direction and at the corresponding point is operated to drive the hydraulic lift 230 to move horizontally, so that the slings are in a slight traction motion, thus completing the fine adjustment of the aerial posture of the steel box girder. When there is a height deviation during the docking and installation process: a multi-point hydraulic lift 230 can be used to operate synchronously to complete the rapid adjustment; Hydraulic rods 231 can also be used for driving adjustment. In this case, one of the two sets of vertically distributed hydraulic rods 231 is selected. When the height position is lower than the docking position, the hydraulic rods 231 can be used to drive the hydraulic lifter 230 to move away from the hanging ring position on the hanger 100, so that the slings at each point are in an inclined state, so that the steel box girder is driven to be lifted. When there is a horizontal position deviation during the docking and installation process: the hydraulic rod 231 in the corresponding drive direction can be used to drive the hydraulic lifter 230 and the sling to move horizontally and complete the deviation adjustment.

[0024] It should be noted that there are various adjustment methods during the hoisting process, and users can choose the appropriate method according to the actual docking and installation situation and personnel coordination.

[0025] The hanger 100 is equipped with a hydraulic pump set and an oil tank. The hydraulic rod 231 and the hydraulic lifter 230 are connected to the hydraulic pump set through oil pipes. Each oil pipe is equipped with a corresponding intelligent control valve. This type of single hydraulic pump set controls multiple points of drive, which is a mature existing technology. Its internal structure and application will not be described in detail here. During the hoisting process, a total station was used for measurement and coordination, and corresponding IMU sensors were installed on the docking plate 210.

[0026] The hydraulic lifter 230 is fixedly fitted with a movable ring 232 inside the docking plate 210 on its outer side, and the end of the hydraulic rod 231 is fixedly connected to the movable ring 232.

[0027] The movable ring 232 facilitates the horizontal movement of the hydraulic lifter 230 on the hanger 100. It should be noted that both sides of the movable ring 232 are embedded with metal wear-resistant balls that contact the inner wall of the hanger 100, which reduces wear between the movable ring 232 and the hanger 100 while improving the smoothness of the movement of the movable ring 232.

[0028] The adjusting component 220 includes a piston tube 221 and a piston rod 222. A piston plate is installed at one end of the piston rod 222, and the piston rod 222 is slidably connected to the inside of the piston tube 221 through the piston plate. The other end of the piston rod 222 is connected to a corresponding hook.

[0029] When adjusting the angle of the corresponding hook, the user can directly pull the corresponding hook to pull the corresponding piston rod 222, change the hook position, and assist in smooth subsequent movement. It should be noted that during the adjustment process, the piston rod 222 drives the piston plate to move inside the piston tube 221. The end of the piston tube 221 is provided with a through hole to facilitate the interaction between the gas inside the piston tube 221 and the outside world during the movement of the piston plate.

[0030] A conduit 223 is installed on the piston tube 221, and a solenoid valve is provided on the outside of the conduit 223.

[0031] By using the conduit 223, the gas in the piston tube 221 can interact normally with the outside world during the adjustment of the piston rod 222. After the adjustment is completed, the solenoid valve is closed to complete the gas sealing, that is, to fix and lock the piston rod 222. It should be noted that users can intelligently control the solenoid valve according to the adjustment time or gas flow during the adjustment process, combined with manual measurement and observation, to ensure that the adjustment length of the two piston rods 222 does not exceed the preset value, thereby reducing the phenomenon of uneven load distribution on the multi-point lugs; The position of the through hole and the position of the guide tube 223 are set opposite to the center of the piston tube 221.

[0032] Two rotating shafts are provided on the outer side of the piston tube 221. These rotating shafts can adjust the angle of the hook. One end of the rotating shaft is rotatably connected to a slider 224 that is slidably connected to the inside of the docking plate 210.

[0033] The user can drive the slider 224 to move relative to each other and away from each other to adjust the horizontal position of the hooks on the two piston rods 222.

[0034] A servo motor 211 is installed inside the docking plate 210. The output shaft of the servo motor 211 is equipped with a gear 212 via a coupling. Two racks 213 mesh with the outer side of the gear 212. One of the sliders 224 is fixedly connected to the outer side of one of the racks 213.

[0035] Start the servo motor 211, and the gear 212 will rotate accordingly according to the rotation direction of the servo motor 211. Then, drive the two racks 213 to move accordingly, complete the driving of the slider 224, and enable the two hooks to complete the position adjustment synchronously. Different points of the lugs can be used while ensuring the position is symmetrical, so that the subsequent load is uniform and the docking stability is guaranteed.

[0036] A contact element 110 is provided below the hanger 100. The contact element 110 includes a hydraulic strut, a ball bearing, and a contact plate.

[0037] Hydraulic struts are used to drive the contact plate to fit against the top of the steel box girder, which improves the stability of the steel box girder during hoisting and reduces the occurrence of unexpected swaying. It should be noted that by using the ball bearings, the contact plate can move accordingly when the steel box girder is adjusted in mid-air. During this process, the hydraulic strut will extend and retract accordingly. At the same time, a set of metal wear-resistant balls are also embedded under the contact plate to reduce excessive wear between the contact plate and the steel box girder. The contact plate has a rubber pad embedded inside, which provides a slight buffer space during the anti-vibration process, reducing the damage to the equipment caused by continuous rigid contact; The setting of the abutment component 110, which is connected to the docking plate 210 at multiple points, forms an upper and lower correspondence, and the dual-area relative method improves the stability of the steel box girder during hoisting.

[0038] This invention also provides a docking construction method for hoisting and positioning steel box girders, the specific steps of which are as follows: S1. Connect the crane hook to the hanging ring on the hanger 100 in advance. Drive the crane arm to move the hanger 100 to a suitable position so that the hook is in the corresponding area on the steel box girder. Drive the hydraulic rod 231 at the corresponding point and adjust the position of the hydraulic lifter 230 and the corresponding docking plate 210 so that the hook matches the hanging lug on the steel box girder. S2. Next, connect the hook in the middle of the connecting plate 210 to the corresponding lug on the steel box girder, and connect the hooks on both sides of the connecting plate 210 to the lugs on both sides, forming a three-point connection in a single area. Then, complete the hook connection of the four areas in sequence. S3. The crane operates, pulling the gantry 100 and the steel box girder into the air. At this time, the contact part 110 is in contact with the steel box girder to perform anti-shaking treatment. Then observe the attitude of the steel box girder. If the docking attitude is normal, drive the crane boom to move the steel box girder closer to the installation support. S4. If the steel box girder has an abnormal air posture, start the operation of the hydraulic lifting device 230 at the corresponding point to pull the corresponding sling to complete the posture adjustment of the steel box girder. After the posture adjustment is normal, place the steel box girder on the installation support. S5. The user observes the docking situation and checks for any offset. If an attitude offset occurs, the corresponding hydraulic rod 231 can be used to drive in the corresponding direction, so that the hydraulic lifter 230 pulls the corresponding sling to make fine adjustments to the attitude of the steel box girder until there is no docking deviation. S6. If a positional deviation occurs, activate all hydraulic rods 231 in the corresponding orientation to fine-tune the horizontal deviation of the steel box girder until there is no misalignment. S7. After the steel box girder is accurately placed, it is quickly reinforced by high-strength bolts and welding. Then the hooks are separated from the corresponding lugs, and the crane drives the gantry to return to its original position for subsequent hoisting operations.

[0039] Working principle: The user can check the status of the crane and the docking part 200 in advance. Then, connect the crane hook to the hanging ring on the hanger 100. The crane boom drives the hanger 100 to move to the appropriate position, so that the hook is in the corresponding area on the steel box girder, and the hook matches the hanging lug on the steel box girder. Next, connect the middle hook on the docking plate 210 to the corresponding hanging lug on the steel box girder, and connect the hooks on both sides of the docking plate 210 to the hanging lugs on both sides. After the docking is completed, the crane operates, pulling the hanger 100 and the steel box girder into the air. At this time, the contact plate is used to fit against the steel box girder for anti-vibration treatment. Then, observe the attitude of the steel box girder and start. The hydraulic lifter 230 at the corresponding point operates, pulling the corresponding sling to adjust the posture of the steel box girder, and then placing the steel box girder on the installation support. The user observes the docking situation. If there is a deviation in posture or docking position, the hydraulic rod 231 at the corresponding point can be driven in the corresponding direction to make the hydraulic lifter 230 pull the corresponding sling, making fine adjustments to the posture of the steel box girder until there is no docking deviation. All hydraulic rods 231 in the corresponding direction are activated to make fine adjustments to the horizontal deviation of the steel box girder until there is no docking deviation. Then the steel box girder is accurately placed, and the docking installation is completed by using high-strength bolts and welding. The overall adjustment method is precise and quick, reducing the frequency of multi-person collaborative work; It should be noted that users can add a power storage device on the hanger 100 to supply power to the electrical components in the entire device, or to supply power to the electrical equipment's built-in power supply. Alternatively, depending on the actual hoisting height and the usage conditions, a mains power connection can be made. The specific power supply method can be selected according to actual usage needs.

[0040] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, 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 a process, method, article, or apparatus. Without further limitations, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes said element.

[0041] Although embodiments of the invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A docking and installation device for hoisting and positioning steel box girders, comprising a hanger (100) for docking with a crane, characterized in that, Also includes: The number of docking parts (200) is four, and the docking parts (200) are disposed on the hanger (100) and can move in the horizontal direction; The docking component (200) includes a docking plate (210) and two adjusting components (220). Both the docking plate (210) and the adjusting components (220) are provided with hooks, and the position of the hooks on the adjusting components (220) is adjustable.

2. The docking installation device for hoisting and positioning steel box girders according to claim 1, characterized in that: The docking component (200) also includes a hydraulic lifter (230), and a sling is provided between the hydraulic lifter (230) and the docking plate (210).

3. The docking installation device for hoisting and positioning steel box girders according to claim 2, characterized in that: Two vertically distributed hydraulic rods (231) are provided on the outside of the hydraulic lifter (230), and the end of the hydraulic rod (231) away from the hydraulic lifter (230) is slidably connected to the inside of the docking plate (210).

4. The docking installation device for hoisting and positioning steel box girders according to claim 3, characterized in that: The hydraulic lifter (230) is fixedly fitted with a movable ring (232) inside the docking plate (210) on its outer side, and the end of the hydraulic rod (231) is fixedly connected to the movable ring (232).

5. The docking installation device for hoisting and positioning steel box girders according to claim 1, characterized in that: The adjusting component (220) includes a piston tube (221) and a piston rod (222). One end of the piston rod (222) is equipped with a piston plate. The piston rod (222) is slidably connected to the inside of the piston tube (221) through the piston plate. The other end of the piston rod (222) is connected to a corresponding hook.

6. The docking installation device for hoisting and positioning steel box girders according to claim 5, characterized in that: A conduit (223) is installed on the piston tube (221), and a solenoid valve is provided on the outside of the conduit (223).

7. The docking installation device for hoisting and positioning steel box girders according to claim 5, characterized in that: Two rotating shafts are provided on the outer side of the piston tube (221), and one end of the rotating shaft is rotatably connected to a slider (224) that is slidably connected to the inside of the docking plate (210).

8. The docking installation device for hoisting and positioning steel box girders according to claim 7, characterized in that: The docking plate (210) is equipped with a servo motor (211). The output shaft of the servo motor (211) is equipped with a gear (212) through a coupling. Two racks (213) mesh with the outer side of the gear (212). One of the sliders (224) is fixedly connected to the outer side of one of the racks (213).

9. The docking installation device for hoisting and positioning steel box girders according to claim 1, characterized in that: An abutment (110) is provided below the hanger (100).

10. A method for hoisting and positioning steel box girders according to claim 1, comprising the hoisting and positioning docking installation device for steel box girders according to any one of claims 1-9, characterized in that, The specific steps are as follows: S1. Connect the crane hook to the hanging ring on the hanger (100) in advance. Drive the crane boom to move the hanger (100) to a suitable position so that the hook is in the corresponding area on the steel box beam. Drive the hydraulic rod (231) at the corresponding point and adjust the position of the hydraulic lifter (230) and the corresponding docking plate (210) so that the hook matches the hanging lug on the steel box beam. S2. Next, connect the hook in the middle of the connecting plate (210) with the corresponding lug on the steel box girder, and connect the hooks on both sides of the connecting plate (210) with the lugs on both sides, forming a three-point connection in a single area. Then, complete the hook connection of the four areas in sequence. S3. The crane operates, pulling the gantry (100) and the steel box girder into the air. At this time, the contact part (110) is in contact with the steel box girder to perform anti-shaking treatment. Then observe the attitude of the steel box girder. If the docking attitude is normal, drive the crane arm to move the steel box girder closer to the installation support. S4. If the steel box girder has an abnormal air posture, start the operation of the hydraulic lifting device 230 at the corresponding point to pull the corresponding sling to complete the posture adjustment of the steel box girder. After the posture adjustment is normal, place the steel box girder on the installation support. S5. The user observes the docking situation and checks whether there is any offset. If there is an attitude offset, the corresponding hydraulic rod (231) can be used to drive in the corresponding direction, so that the hydraulic lifter (230) pulls the corresponding sling to make fine adjustments to the attitude of the steel box girder until there is no docking deviation. S6. If a positional deviation occurs, activate all hydraulic rods 231 in the corresponding orientation to make fine adjustments to the horizontal deviation of the steel box girder until there is no docking deviation. S7. After the steel box girder is accurately placed, it is reinforced quickly by using high-strength bolts and welding. Then the hook is separated from the corresponding lug, and the crane drives the hanger (100) to reset for subsequent hoisting operations.

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