Multifunctional welding transportation trolley for connecting and transferring multiple sections of steel pipes

Abstract

The utility model discloses a multifunctional welding and transporting trolley for connecting and transferring multiple sections of steel pipes, belongs to the technical field of transporting trolleys, and solves the problem that an existing transporting trolley is single in function. The system comprises at least one group of transfer trolley components movably arranged on a track, and each group of transfer trolley components comprises a driving trolley and a driven trolley; the driving trolley and the driven trolley each comprise a base movably arranged on the track, rolling wheels are arranged at the two ends of the top of each base, each base is provided with a hydraulic lifting assembly used for lifting the multiple sections of steel pipes, and the driving trolley is provided with a driving assembly used for driving the rolling wheels on the driving trolley. Compared with an existing transport trolley only having a transport function, the transport trolley has more functions, has the functions of lifting and rotating multiple sections of steel pipes through the hydraulic lifting assembly and the driving assembly, and facilitates the operation of connecting the multiple sections of steel pipes, performing submerged-arc welding and transferring the multiple sections of steel pipes to a mounting station in a tunnel.

Description

Technical Field

[0001] The utility model relates to the technical field of transportation trolleys, and particularly relates to a multifunctional welding transportation trolley for multi-section steel pipe connection and transfer. Background Art

[0002] In recent years, with the rapid development of the hydropower industry, the transportation and installation of penstock pipes in the water intake system of hydropower stations have also been developing towards a higher degree of automated operation. Since the penstock pipes are installed in the penstock tunnel, the penstock pipes need to be lengthened on-site by multiple prefabricated pipe sections. There are no hoisting equipment and transportation equipment in the tunnel, and the operation space is narrow, which makes it inconvenient to install, weld, and transfer multiple steel pipes.

[0003] To solve the above problems, the utility model patent with the publication number of CN216580490U discloses a transportation trolley device applicable to large penstock pipes, which includes a first transverse frame, a vehicle frame, and a fixing mechanism. A second transverse frame is fixedly arranged between the two vehicle frames on both sides. A fixing block is arranged inside the second transverse frame, and side plates are bolted to both sides of the bottom of the fixing block. The design of this utility model is simple in structure, which is convenient for workers to disassemble or assemble. At the same time, this device has the advantages of low price and reduced design cost, and can be applicable to the transportation of different pipe diameters. However, this transportation trolley device can only play the role of transporting steel pipes, and cannot rotate or lift steel pipes, resulting in the problem of single function. Summary of the Utility Model

[0004] Aiming at the above problems in the prior art, the utility model provides a multifunctional welding transportation trolley for multi-section steel pipe connection and transfer, which solves the problem of single function of the existing transportation trolley.

[0005] In order to achieve the above purpose, the technical scheme adopted by the utility model is as follows:

[0006] A multifunctional welding transportation trolley for multi-section steel pipe connection and transfer is provided, which includes at least one set of transfer trolley components movably arranged on a track. Each set of transfer trolley components includes a driving trolley and a driven trolley; both the driving trolley and the driven trolley include a base movably arranged on the track. At both ends of the top of each base, rollers are arranged, and a hydraulic lifting component for lifting multiple steel pipes is arranged on each base. A driving component for driving the rollers thereon is arranged on the driving trolley.

[0007] In this solution, the active trolley and the driven trolley can not only transport multiple sections of steel pipes on the track, but the hydraulic lifting components on the active trolley and the driven trolley can lift the multiple sections of steel pipes. At the same time, the driving components on the active trolley can drive the rollers to drive the multiple sections of steel pipes to rotate, which is convenient for submerged arc welding of multiple sections of steel pipes. Compared with the existing transport trolleys with only transportation function, this solution has more functions and additional lifting and rotation functions, which is convenient for the operation of connecting multiple sections of steel pipes, submerged arc welding and transporting them to the installation station in the tunnel.

[0008] Furthermore, the top surface of each base is in an arc structure, and each end surface of each base is provided with running wheels for moving on the track. The top surface of the base is in an arc structure, which can better carry the multi-section steel pipes and improve the stability of the transportation of the multi-section steel pipes. At the same time, the running wheels facilitate the smooth movement of the transfer trolley assembly on the track, reducing friction and resistance during the transportation process.

[0009] Furthermore, the hydraulic lifting assembly includes four fixed supports, which are respectively located on both sides of the two end surfaces of the base, and a hydraulic cylinder is vertically fixed in each fixed support. Each hydraulic cylinder drives a hydraulic rod to extend from the bottom of the fixed support and lift the base.

[0010] Furthermore, each hydraulic cylinder is provided with a hydraulic lock, which can ensure that the hydraulic cylinder is in a safe locked state when a sudden power failure occurs during operation, thereby avoiding pressure unloading when the hydraulic system fails.

[0011] Furthermore, a support foot is provided on the bottom end of each hydraulic rod, which increases the contact area between the hydraulic rod and the ground, and improves the stability of the multi-section steel pipe during the lifting process.

[0012] Furthermore, the driving assembly includes two motors arranged on the base of the active trolley, the two motors are arranged on both sides of the end surface of the base, and each motor is connected to the input shaft of the reducer, and the output shafts of the two reducers are connected to the two rollers. The motor increases the output torque through the reducer, so that the roller can drive the multi-section steel pipe to rotate.

[0013] Furthermore, each motor and each hydraulic cylinder is electrically connected to a hand control box, which facilitates workers to uniformly control the kinetic energy of the motor and the lifting operation of the hydraulic cylinder, making the operation easier and improving work efficiency and operational flexibility.

[0014] Furthermore, each hydraulic cylinder is connected to an external hydraulic station through an oil pipe, and each motor is electrically connected to the power supply in an external electric control box through a connecting wire. An oil pipe quick plug and a wire quick plug are respectively arranged on each oil pipe and each connecting wire. The oil pipe quick plug and the wire quick plug facilitate quickly disconnecting the oil pipe and the connecting wire when the transfer trolley assembly transfers multiple steel pipes, and can quickly connect the oil pipe and the connecting wire during the submerged arc welding and continuous butt welding of multiple steel pipes.

[0015] The beneficial effects of a multifunctional welding and transportation trolley for continuous sections and transportation of multiple steel pipes provided by the present utility model are as follows:

[0016] Compared with the existing transportation trolley that only has a transportation function, the present utility model has more functions. Through the hydraulic lifting assembly and the driving assembly, it has the functions of lifting and rotating multiple steel pipes, can directly transfer multiple steel pipes to the installation position in the tunnel, and can be docked with the previously installed multiple steel pipes through the hydraulic lifting assembly, without the need for manual jacking through mechanisms such as jacks. At the same time, the driving assembly can drive the rollers to drive the multiple steel pipes to rotate, facilitating the submerged arc welding of multiple steel pipes, and greatly improving the efficiency and safety of construction operations. Description of the Drawings

[0017] Figure 1 It is a schematic structural diagram of the multifunctional welding and transportation trolley in cooperation with the pipeline;

[0018] Figure 2 It is a schematic structural diagram of the active trolley;

[0019] Figure 3 It is a schematic structural diagram of the driven trolley;

[0020] Figure 4 It is a schematic cross-sectional diagram of the multifunctional welding and transportation trolley in cooperation with the pipeline;

[0021] Figure 5 For Figure 4 The enlarged view at A in;

[0022] Wherein: 1. Active trolley; 2. Driven trolley; 3. Base; 4. Roller; 5. Hydraulic lifting assembly; 51. Fixed support; 52. Hydraulic cylinder; 521. Hydraulic rod; 522. Support leg; 6. Walking wheel; 61. Protective cover; 7. Driving assembly; 71. Motor; 72. Reducer. Detailed Embodiments

[0023] The following describes the specific embodiments of the present utility model to facilitate the understanding of those skilled in the art of this technology. It should be clear that the present utility model is not limited to the scope of the specific embodiments. For those of ordinary skill in the art of this technology, as long as various changes are within the spirit and scope of the present utility model defined and determined by the appended claims, these changes are obvious, and all utility models created using the concept of the present utility model are within the scope of protection.

[0024] This embodiment provides a multifunctional welding and transportation trolley for multi-section steel pipe connection and transportation. Compared with the existing transportation trolley with only transportation function, it has more functions. It has the functions of lifting and rotating multi-section steel pipes through the hydraulic lifting component 5 and the driving component 7, which is convenient for realizing the operations of multi-section steel pipe connection, submerged arc welding, and transportation to the installation station in the tunnel. The following will show it in detail.

[0025] Reference Figure 1 , the multifunctional welding and transportation trolley includes at least one set of transfer trolley components movably arranged on the track. Preferably, there are two sets of transfer trolley components in this embodiment, and each set of transfer trolley components includes a driving trolley 1 and a driven trolley 2.

[0026] Reference Figure 2 and Figure 3 , both the driving trolley 1 and the driven trolley 2 include a base 3 movably arranged on the track. The four bases 3 are arranged at a certain interval and are all used to support multi-section steel pipes.

[0027] The top surface of each base 3 is in an arc structure shape, and the central angle is 70° - 80°, preferably 74.7°. At both ends of the top of each base 3, rollers 4 are provided. Among them, a driving component 7 is provided on the driving trolley 1 for driving the rollers 4 thereon.

[0028] In this embodiment, the number of multi-section steel pipes is four. The inner diameter of each steel pipe is φ8.0m, the length is 2.4m, and the maximum arch height of the stiffening ring on each steel pipe is 200mm.

[0029] As the specific structure of the connection between the base 3 and the track for movement, reference Figure 4 and Figure 5 , at both sides of each end face of each base 3, traveling wheels 6 for moving on the track are provided. Each traveling wheel 6 is rotatably arranged in a protective cover 61 through a bearing, and the protective cover 61 can protect the traveling wheel 6.

[0030] As the specific structure of the hydraulic lifting component 5, reference Figure 4 and Figure 5The hydraulic lifting assembly 5 includes four fixed supports 51, which are respectively located on both sides of the two end surfaces of the base 3, and a hydraulic cylinder 52 is vertically fixed in each fixed support 51, and a support foot 522 is provided on the bottom end of each hydraulic rod 521. The support foot 522 increases the contact area between the hydraulic rod 521 and the ground, and improves the stability of the multi-section steel pipe during the lifting process.

[0031] In this embodiment, each hydraulic cylinder 52 drives the hydraulic rod 521 to extend from the bottom of the fixed support 51 and lift the base 3, and the lifting height is greater than or equal to 400 mm, and the lifting rate is 60 mm / min. And each hydraulic cylinder 52 is provided with a hydraulic lock. The hydraulic lock can ensure that the hydraulic cylinder 52 is in a safe locking state when the power is suddenly cut off during operation, and avoid pressure unloading when the hydraulic system fails.

[0032] As a specific structure of the driving assembly 7, the driving assembly 7 includes two motors 71 arranged on the base 3 of the active trolley 1, the two motors 71 are respectively arranged on both sides of the end surface of the base 3, and each motor 71 is drivingly connected to the input shaft of the reducer 72, and the output shafts of the two reducers 72 are respectively fixedly connected to the rotating shafts of the two rollers 4. The motor 71 increases the output torque through the reducer 72, so that the roller 4 can drive the multi-section steel pipe to rotate.

[0033] As the hydraulic transmission connection structure of this embodiment, due to the limitation of the space size on site, this embodiment places the hydraulic station alone at the assembly station, and does not move simultaneously with the transfer trolley assembly. Each hydraulic cylinder 52 is connected to the external hydraulic station through an oil pipe, and each oil pipe and each connecting line are provided with an oil pipe quick plug, which is convenient for plugging in on-site use. And each oil pipe is shunted to the valve group through a shunt row to avoid plugging multiple pipes on site each time. The oil pump of the hydraulic station adopts a synchronous motor to ensure that each hydraulic cylinder 52 can be raised and lowered synchronously.

[0034] As the electrical connection structure of this embodiment, each motor 71 and each hydraulic cylinder 52 are electrically connected to the hand control box. The hand control box is a prior art, and the hand control box is convenient for workers to uniformly control the kinetic energy of the motor 71 and the lifting operation of the hydraulic cylinder 52, making the operation more convenient, improving work efficiency and operational flexibility.

[0035] Since the use site is in a tunnel, due to space limitations, the electric control box and the transfer trolley assembly are not installed together, but are installed separately on the ground. Each motor 71 is electrically connected to the power supply in the external electric control box through a connecting wire. A wire quick plug is provided on each connecting wire. When the transfer trolley assembly is used to transfer multiple sections of steel pipes, all connecting wires between the electric control box and the transfer trolley assembly need to be disconnected. The wire quick plug adopts a quick plug method, and the protection level of the terminal block housing is IP66.

[0036] In summary, the working principle of this solution is as follows:

[0037] Adjust the distance between the driving trolley 1 and the driven trolley 2 according to the length of the multi-section steel pipe. Use the driving component 7 on the driving trolley 1 to drive the roller 4 to drive the multi-section steel pipe to rotate, so as to facilitate the submerged arc welding of the circumferential seam of the multi-section steel pipe.

[0038] At the same time, the multi-section steel pipe can be transported to the designated position by using the walking function of the driving trolley 1 and the driven trolley 2 through an external traction device. Then, lift the multi-section steel pipe and the base 3 by no less than 400 mm through the hydraulic cylinder 52, and take temporary support and then withdraw the base 3 to execute the next cycle of production tasks.

[0039] Compared with the existing transport trolley with only transport function, this solution has more functions, and additionally has lifting and rotating functions, which is convenient for realizing the operations of connecting sections of multi-section steel pipes, submerged arc welding and transporting them to the installation station in the tunnel.

[0040] Although the specific implementation mode of the utility model has been described in detail in conjunction with the drawings, it should not be construed as a limitation on the protection scope of this patent. Within the scope described in the claims, various modifications and deformations that can be made by those skilled in the art without creative labor still fall within the protection scope of this patent.

Claims

1. A multifunctional welding and transportation trolley for multi-section steel pipe connection and transfer, characterized in that, It includes at least one set of transfer trolley assemblies that are movably arranged on the track, and each of the transfer trolley assemblies includes a driving trolley (1) and a driven trolley (2). Both the driving trolley (1) and the driven trolley (2) include a base (3) that is movably arranged on the track. At both ends of the top of each base (3), rollers (4) are provided, and a hydraulic lifting assembly (5) for lifting multiple sections of steel pipes is arranged on each base (3). A driving assembly (7) for driving the rollers (4) thereon is arranged on the driving trolley (1).

2. The multi-functional welding and transportation trolley according to claim 1, characterized in that, The top surface of each base (3) is in an arc structure, and traveling wheels (6) for moving on the track are provided on both sides of each end face of each base (3).

3. The multi-functional welding and transportation trolley according to claim 1, characterized in that, The hydraulic lifting assembly (5) includes four fixed supports (51). The four fixed supports (51) are respectively located on both sides of the two end faces of the base (3), and a hydraulic cylinder (52) is vertically fixed in each fixed support (51). Each hydraulic cylinder (52) drives a hydraulic rod (521) to extend from the bottom of the fixed support (51) and lift the base (3).

4. The multifunctional welding and transportation trolley according to claim 3, characterized in that A hydraulic lock is provided on each hydraulic cylinder (52).

5. The multi-functional welding and transportation trolley according to claim 3, characterized in that, A support foot (522) is provided at the bottom end of each hydraulic rod (521).

6. The multifunctional welding and transportation trolley according to claim 3, characterized in that, The driving assembly (7) includes two motors (71) arranged on the base (3) of the driving trolley (1). The two motors (71) are respectively arranged on both sides of the end face of the base (3), and each motor (71) is in transmission connection with the input shaft of a speed reducer (72). The output shafts of the two speed reducers (72) are respectively in transmission connection with the two rollers (4).

7. The multifunctional welding and transportation trolley according to claim 6, wherein, Each motor (71) and each hydraulic cylinder (52) are electrically connected to a hand control box.

8. The multifunctional welding and transportation trolley according to claim 7, wherein Each hydraulic cylinder (52) is communicated with an external hydraulic station through an oil pipe. Each motor (71) is electrically connected to the power supply in an external electric control box through a connecting wire, and an oil pipe quick plug and a wire quick plug are respectively provided on each oil pipe and each connecting wire.

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