Welding transportation trolley

Abstract

The utility model belongs to the technical field of transportation equipment, and particularly discloses a welding transportation trolley which comprises a roller carrier body, the roller carrier body comprises a carrier body used for bearing workpieces, the carrier body is connected with a walking mechanism and a lifting mechanism, the walking mechanism is used for driving the carrier body to move, and the lifting mechanism is used for lifting the workpieces. The lifting mechanism is used for driving the frame body to ascend or descend, the two ends of the frame body are each rotationally connected with a rolling wheel, the rolling wheels can abut against workpieces on the frame body, and the frame body is provided with a rotation driving mechanism for driving the rolling wheels to rotate. According to the utility model, the work of grouping, connecting, welding and transferring the barrel body can be completed in a limited tunnel space.

Description

Technical Field

[0001] This utility model relates to the field of transportation equipment technology, specifically to a welding transportation trolley. Background Technology

[0002] The hydropower station's water diversion tunnel ends with an impedance-type surge tank, which is then connected to a pressure steel pipe. The pressure steel pipe consists of multiple sections of steel pipe. The assembly, submerged arc welding, and transportation of the multiple sections of the pressure steel pipe to the installation site must be completed inside the tunnel.

[0003] Due to the narrow and limited space in the water diversion tunnel, ordinary trolleys cannot meet the various functional and dimensional requirements of the trolleys under the on-site working conditions; thus, it is impossible to complete the assembly, welding, and transportation of steel pipes in the narrow and limited space of the water diversion tunnel. Utility Model Content

[0004] This utility model provides a welding transport trolley, which aims to complete the assembly, welding and transfer of cylinder sections in a limited tunnel space.

[0005] This utility model is achieved through the following technical solution: a welding transport trolley, including a roller frame body, the roller frame body including a frame for carrying workpieces, a traveling mechanism and a lifting mechanism connected to the frame, the traveling mechanism for driving the frame to move, the lifting mechanism for driving the frame to rise or fall, rollers rotatably connected to both ends of the frame, the rollers being able to abut against the workpieces on the frame, and a rotary drive mechanism for driving the rollers to rotate on the frame.

[0006] Compared with existing technologies, this solution has the following advantages and beneficial effects:

[0007] The welding transport trolley in this solution is suitable for assembling, welding, and transferring cylindrical sections within a limited tunnel space. In practical applications, the welding transport trolley in this solution can use a traction device from existing technology to pull the frame. The frame moves under the action of the traveling mechanism, thereby transporting the workpiece to the designated location. The traveling mechanism makes the movement of the frame smoother and easier. In practical applications, a traveling track that works in conjunction with the traveling mechanism can be installed in advance in the tunnel, and the traveling mechanism travels along the traveling track.

[0008] In this solution, when one welding transport trolley is used, the workpiece can be transported. In actual use, if it is necessary to group and connect the workpiece (i.e., cylinder section), two welding transport trolleys of this solution can be used at the same time, which makes it convenient to group and connect the workpiece. It is very convenient and flexible to use.

[0009] The lifting mechanism in this solution can lift the frame and the workpiece on it as a whole after the workpiece is transported to the designated position, and then team it with the workpiece that has already been installed in place. After teaming, the receiving bracket in the tunnel supports the workpiece, and then the lifting mechanism lowers the frame to detach it from the workpiece and onto the travel track, thus facilitating the removal of the entire trolley.

[0010] In this solution, since the rollers abut against the workpieces on the frame, the rotary drive mechanism drives the rollers to rotate, utilizing the friction between the rollers and the workpieces to rotate the workpieces. This facilitates welding with the welding equipment, making it easier to weld two workpieces that are grouped together. The welding process is also more convenient, allowing welding to be performed in the same location, which effectively improves work efficiency. Furthermore, it does not require a large tunnel space and is suitable for completing welding, transportation, and grouping operations within a limited space.

[0011] Furthermore, the walking mechanism includes a connecting frame, a driven walking wheel axle, and a walking wheel. The connecting frame is connected to the outside of the frame. The driven walking wheel axle is vertically rotatably connected inside the connecting frame. The walking wheel is located inside the connecting frame and is coaxially rotatably connected to the driven walking wheel axle. The bottom side of the walking wheel is located below the connecting frame.

[0012] Beneficial effects: In the walking mechanism of this solution, the walking wheels are connected to the frame through the connecting frame, and the walking wheels are rotatably connected to the driven walking wheel shaft on the connecting frame. The bottom side of the walking wheels is located below the connecting frame, so the walking wheels can drive the entire frame to move along the walking track installed in the tunnel.

[0013] Furthermore, a locking screw is threaded onto one side of the connecting frame, and tightening the locking screw will cause the locking screw to press against the end of the traveling wheel.

[0014] Beneficial effects: The locking screw in this solution can restrict the rotation of the traveling wheels by tightening the locking screw after the workpiece is transported to the designated position. This ensures that the frame remains stable during the welding and assembly of the workpiece in the designated position, making it easy to operate.

[0015] Furthermore, the walking mechanism is provided in two sets, which are located on the left and right sides of the frame, respectively, and each set has two walking mechanisms, which are located on both sides of the frame in the direction of movement.

[0016] Beneficial effects: The four walking mechanisms in this solution can improve the stability support of the frame, thereby ensuring that the workpieces on the frame are transported smoothly.

[0017] Furthermore, the lifting mechanism includes a fixed plate and a telescopic component, the fixed plate being connected to the frame, and the fixed part of the telescopic component being connected to the fixed plate.

[0018] Beneficial effects: In this solution, the telescopic components are connected to the frame through a fixed plate, and the connection method and structure are simpler and easier to operate.

[0019] Furthermore, a support plate is connected to the output end of the telescopic component.

[0020] Beneficial effects: When the output end of the expansion joint in this solution extends, it allows the support plate to contact the tunnel ground. The support plate protects the output end of the expansion joint, preventing it from directly contacting the ground. At the same time, it increases the contact area with the ground, thereby improving the stability of the support.

[0021] Furthermore, the lifting mechanism is provided in two sets, which are located on the left and right sides of the frame, respectively, and each set has two lifting mechanisms, which are located on both sides of the frame in the direction of movement.

[0022] Beneficial effects: This solution has four lifting mechanisms, which can improve the support of the frame. The frame can be adjusted according to the different elevations of the tunnel surface. During adjustment, the four lifting mechanisms can be raised and lowered individually or simultaneously to adapt to the unevenness of the tunnel surface and keep the frame relatively level. This improves the convenience and accuracy of the teamwork between the workpieces on the frame.

[0023] Furthermore, the rotary drive mechanism includes a motor, a reducer, and a drive roller shaft. The drive roller shaft is rotatably connected to the frame, the roller is coaxially and fixedly connected to the drive roller shaft, and the output end of the reducer is connected to the drive roller shaft. The motor drives the drive roller shaft to rotate through the reducer.

[0024] Beneficial effects: In this solution, the roller and the drive roller shaft are coaxially fixedly connected. The electric motor in the rotary drive mechanism provides power, and the reducer can reduce the power of the electric motor and transmit it to the drive roller shaft, so that the drive roller shaft drives the roller to rotate, thereby driving the workpiece to rotate, which facilitates welding of the workpiece along the circumference.

[0025] Furthermore, the frame is connected to two sets of traction lugs, which are located on the left and right sides of the frame, respectively, and each set of traction lugs consists of two lugs, which are located on both sides of the frame in the direction of movement.

[0026] Beneficial effects: The lifting lugs provide a connection point for the traction device, making it easy to transport the workpiece to the designated position by using the trolley's traveling function after connecting the traction device to the traction lifting lugs.

[0027] Furthermore, a level is installed on the frame.

[0028] Beneficial effect: A level instrument is installed on the frame, which makes it easy to observe the lifting and balancing of a welding transport trolley in this scheme. Attached Figure Description

[0029] The accompanying drawings, which are included to provide a further understanding of the embodiments of the present invention and form part of this application, do not constitute a limitation thereof. In the drawings:

[0030] Figure 1 This is a front view of an embodiment of a welding transport trolley according to the present invention;

[0031] Figure 2 This is a top view of an embodiment of a welding transport trolley according to the present invention;

[0032] Figure 3 This is a partial cross-sectional view from the left side of an embodiment of a welding transport trolley according to this utility model;

[0033] Figure 4 This is a cross-sectional view of the traveling mechanism in an embodiment of a welding transport trolley according to the present invention;

[0034] Figure 5 This is a front view of a welding transport trolley support cylinder according to the present invention;

[0035] Figure 6 This is a schematic diagram of a single-section cylinder transport in an embodiment of a welding transport trolley of this utility model;

[0036] Figure 7 This is a schematic diagram of two cylindrical sections assembled in an embodiment of a welding transport trolley of this utility model;

[0037] Figure 8 This is a schematic diagram illustrating the transportation of a cylindrical section to be installed to a pre-installed cylindrical section in an embodiment of a welding transport trolley according to this utility model.

[0038] The attached diagram shows the markings and corresponding component names:

[0039] Frame 1, Roller 2, Rotary drive mechanism 3, Motor 31, Reducer 32, Driven roller shaft 33, Flat key 34, Roller bearing 35; Traveling mechanism 4, Traveling wheel 40, Driven traveling wheel shaft 41, Connecting frame 42, Traveling wheel bearing 43, Locking screw 44; Hydraulic cylinder 5, Fixing plate 50, Fixing bolt 51, Support plate 52; Level 6, Traction lug 7, Traveling track 8. Detailed Implementation

[0040] To make the objectives, technical solutions, and advantages of this utility model clearer, the present utility model will be further described in detail below with reference to the embodiments and accompanying drawings. The illustrative embodiments and descriptions of this utility model are only used to explain this utility model and are not intended to limit this utility model.

[0041] like Figures 1-3 As shown, this embodiment provides a welding transport trolley, including a roller frame body. The roller frame body includes a frame 1 for carrying workpieces. A traveling mechanism 4 and a lifting mechanism are connected to the frame 1. The traveling mechanism drives the frame 1 to move, and the lifting mechanism drives the frame 1 to rise or fall. Rollers 2 are rotatably connected to both ends of the frame 1. The rollers 2 can abut against the workpieces on the frame 1. A rotary drive mechanism 3 is provided on the frame 1 to drive the rollers 2 to rotate. Specifically:

[0042] Combination Figure 4 As shown, in this embodiment, the walking mechanism includes a connecting frame 42, a driven walking wheel axle 41, and a walking wheel 40. The connecting frame 42 is connected to the outer side of the frame 1. In this embodiment, the connecting frame 42 is welded or fixed to the outer side of the frame 1. In this embodiment, the longitudinal section of the connecting frame 42 is gate-shaped, and the bottom end is an open end. The driven walking wheel axle 41 is vertically rotatably connected inside the connecting frame 42. The driven walking wheel axle 41 is fixedly connected to the connecting frame 42 by screws. The walking wheel 40 is located inside the connecting frame 42 and is coaxially rotatably connected to the driven walking wheel axle 41 through a walking wheel bearing 43. The bottom side of the walking wheel 40 is located below the connecting frame 42, so that the bottom of the walking wheel 40 protrudes, which facilitates its cooperation with the walking track 8 installed in the tunnel and its movement along the walking track 8.

[0043] In this embodiment, a locking screw 44 is threaded on one side of the connecting frame 42. Tightening the locking screw 44 will cause the end of the locking screw to press against the end of the traveling wheel 40, thereby restricting the rotation of the traveling wheel 40 and restricting its movement. This facilitates the welding and other operations on the workpiece transported to the designated position.

[0044] Combination Figure 1 and Figure 2As shown, in this embodiment, the traveling mechanism 4 is provided in two sets, located on the left and right sides of the frame 1 respectively. Each set of traveling mechanisms 4 consists of two units, located on opposite sides of the frame 1 in the direction of movement. Therefore, a total of four traveling mechanisms are provided. Two of the four traveling mechanisms 4 are located on the left side of the frame 1, and the other two are located on the right side. The two traveling mechanisms on the left and the two on the right are respectively located on the front and rear sides of the frame 1. This arrangement of four traveling mechanisms 4 provides more uniform and stable support to the frame 1, ensuring smooth movement of the frame 1 when transporting workpieces.

[0045] like Figure 1 and Figure 2 As shown, in this embodiment, the lifting mechanism includes a fixed plate 50 and a telescopic component. The fixed plate 50 is connected to the frame 1, and the fixed part of the telescopic component is connected to the fixed plate 50. The output end of the telescopic component is connected to a support plate 52. Specifically, in this embodiment, the telescopic component is a hydraulic cylinder 5. The fixed part (i.e., the cylinder body) of the hydraulic cylinder 5 is welded and fixed to the fixed plate 50. Three vertically distributed screw holes are provided on both sides of the fixed plate 50. Fixing bolts 51 are inserted into the screw holes on both sides of the fixed plate 50 to connect and fix it to one side of the frame 1, thereby achieving the purpose of fixing the hydraulic cylinder 5 to the frame 1.

[0046] The output end of the hydraulic cylinder 5 is set downward, and the output end of the hydraulic cylinder 5 is coaxially and fixedly connected to the support plate 52. The support plate 52 and the output shaft of the hydraulic cylinder 5 can be connected by a coupling, a pin, or a screw, etc. There is no specific limitation here. The area of ​​the support plate 52 is larger than the area of ​​the output shaft end of the hydraulic cylinder 5, which can improve the stability of the support frame 1.

[0047] Combination Figure 2 As shown, in this embodiment, there are two sets of lifting mechanisms, located on the left and right sides of the frame 1, respectively. Each set contains two lifting mechanisms, located on opposite sides of the frame 1 in the direction of movement. The arrangement of the two sets of lifting mechanisms is consistent with the arrangement of the two sets of traveling mechanisms 4 described above, and will not be repeated here.

[0048] Combination Figure 3 As shown, the rotary drive mechanism 3 includes a motor 31, a reducer 32, and a drive roller shaft 33. The drive roller shaft 33 is rotatably connected to the frame 1 through a roller bearing 35. In this embodiment, the traveling wheel bearing 43 and the roller bearing 35 are distinguished by being mounted on two different structures for ease of description. Both of them use the bearing structure in the prior art.

[0049] The roller 2 is coaxially and fixedly connected to the drive roller shaft 33. In this embodiment, a flat key 34 is connected to the drive roller shaft 33, and a keyway that mates with the flat key 34 is provided on the inner side of the roller 2. The roller 2 and the drive roller shaft 33 are connected and fixed through the mating of the flat key 34 and the keyway.

[0050] The output end of the reducer 32 is connected to the drive roller shaft 33 via a coupling; the motor 31 drives the drive roller shaft 33 to rotate through the reducer 32, that is, the output end of the motor 31 is connected to the input end of the reducer 32. In this embodiment, the housing part of the reducer 32 is fixed to the frame 1 by bolts, and the reducer 32 adopts a worm gear reducer.

[0051] In another embodiment, a welding transport trolley has two roller frame bodies, which provides more stable support for the workpiece.

[0052] In another embodiment, such as Figure 1 and Figure 2 As shown, two sets of traction lugs 7 are connected to the frame 1. The two sets of traction lugs 7 are located on the left and right sides of the frame 1, respectively, and each set of traction lugs 7 has two lugs. The two traction lugs 7 are located on both sides of the frame 1 in the direction of movement, so that the front and rear sides of the frame 1 have two traction lugs 7, which makes it convenient for the traction mechanism to pull the frame 1 to move through the traction lugs 7.

[0053] In another embodiment, a level 6 is mounted on the frame 1, such as... Figure 2 As shown, in this embodiment, four levels 6 are provided. The four levels 6 are respectively installed on the top of the connecting frame 42 in the walking mechanism 4. The setting of the levels 6 facilitates the observation of the lifting and balancing of a welding transport trolley in this embodiment. By observing the level data, the levelness of the welding transport trolley can be adjusted on-site to reduce the axial movement caused by the rotation of the workpiece, and to improve the relative parallelism of the axes of the trolley and the workpiece, thereby reducing the wear of the walking wheels 40.

[0054] The specific implementation process is as follows:

[0055] like Figure 5 As shown, a welding transport trolley of this utility model can complete the assembly, welding and transfer of steel pipes in a limited tunnel space. The workpiece is placed inside the frame 1, which supports and limits the workpiece. In this embodiment, the inner side of the frame 1 is an arc-shaped surface, which can better match the shape of the workpiece.

[0056] When using, such as Figure 6 As shown, a welding transport trolley includes two roller frame bodies, and a welding transport trolley of this embodiment can be used to support and transport a single section of cylinder.

[0057] like Figure 7 As shown, a welding transport trolley includes two roller frame bodies, and two welding transport trolleys of this embodiment can be used to connect two sections of cylinder together.

[0058] Each welding transport trolley consists of two roller frame bodies, each with a frame 1 having rotation drive, lifting and walking functions, as well as an electrical control system and a hydraulic lifting system, to meet the requirements for use in tunnels and culverts.

[0059] The roller frame body has a manual walking function, and the distance between the two roller frame bodies can be adjusted by hand according to the length of the workpiece. The roller frame body in this utility model also has a lifting function. The four hydraulic cylinders 5 can be lifted and lowered simultaneously or individually. It can be adaptively adjusted according to the flatness of the ground to meet the needs of connecting sections between cylinders and to adapt to uneven ground in tunnels. During the adjustment process, it is adaptively adjusted according to the four level instruments 6 to keep the frame 1 in the roller frame body in a horizontal state.

[0060] The traction lug 7 installed on the frame 1 is connected to a traction device. Utilizing the traveling function of the entire trolley, the frame 1 is pulled, thereby transporting the workpiece to the designated position. Figure 8 As shown, the frame 1 and the workpiece are lifted as a whole by the hydraulic cylinder 5, so that the cylinder section to be installed can be assembled with the cylinder section that has been installed in place. After the assembly is completed, the workpiece is supported by the receiving bracket set in advance in the tunnel. Then, the frame 1 in the roller frame body is driven by the hydraulic cylinder 5 to descend and detach from the workpiece onto the traveling track 8. Then, the entire trolley is withdrawn to execute the next cycle of production work.

[0061] In this utility model, the rotation drive of the roller 2 in the two roller frame bodies of a welding transport trolley is controlled by a frequency converter to ensure synchronous output. The roller 2 rotates, and the friction between the roller 2 and the workpiece drives the workpiece to rotate, which is used in conjunction with the welding equipment for welding.

[0062] In this utility model, the frame 1 that carries the workpiece is designed to be adaptable to tunnels and the workpieces inside tunnels, and the mounting positions of the rollers 2 and the traveling wheels 40 are integrated with the frame 1. This design is beneficial for use in confined spaces.

[0063] It should be noted that the above description of the disclosed embodiments enables those skilled in the art to implement or use this application. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the scope of this application. Therefore, this application is not to be limited to the embodiments shown herein, but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

[0064] In the description of this utility model, it should be noted that the terms "first", "second", "third", etc. are used only for distinguishing descriptions and should not be construed as indicating or implying relative importance.

[0065] In the description of this document, the terms "upper", "lower", "left", "right", "front", "rear", "top", "bottom", "inner", "outer", "middle", "vertical", "horizontal", "lateral", "longitudinal", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the attached drawings. They are only used to describe the relative positional relationship between the components or parts and do not specifically limit the specific installation orientation of each component or part.

[0066] In the description of this document, some terms may be used to indicate not only orientation or positional relationship, but also other meanings. For example, the term "above" may also be used in some cases to indicate a dependency or connection relationship. Those skilled in the art can understand the specific meaning of these terms in this application according to the specific circumstances.

[0067] In the description of this document, the terms "installation," "setup," "equipped with," "connection," and "linked" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral structure; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium, or an internal connection between two devices, components, or parts. Those skilled in the art can understand the specific meaning of the above terms in this application according to the specific circumstances.

[0068] The structures, proportions, sizes, etc., drawn in the accompanying drawings in this application are only used to complement the content disclosed in this technical disclosure for those skilled in the art to understand and read, and are not intended to limit the implementation conditions of this application. Therefore, they have no substantial technical significance. Any modification of the structure, change of the proportion relationship, or adjustment of the size shall still fall within the scope of the technical content disclosed in this application, provided that it does not affect the effect and purpose that this application can produce.

[0069] The terminology used in this document is that which is currently widely used in the art in consideration of the functionality of this disclosure; however, these terms may vary depending on the intent, precedent, or new technology of those skilled in the art. Furthermore, specific terms may be chosen by the applicant, and in such cases, their detailed meanings will be described in the detailed description of this disclosure. Therefore, the terminology used in this document should not be construed as simple names, but rather based on the meaning of the terms and the overall description of this disclosure.

[0070] This document uses flowcharts or text to illustrate the operational steps performed according to embodiments of this application. It should be understood that the operational steps in the embodiments of this application are not necessarily performed precisely in the order described. Instead, as needed, various steps can be processed in reverse order or simultaneously. Furthermore, other operations can be added to these processes, or one or more operations can be removed from these processes.

[0071] The above are merely preferred embodiments of this application and are not intended to limit this application. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this application should be included within the protection scope of this application.

Claims

1. A welding transport trolley, comprising a roller frame body, characterized in that, The roller frame body includes a frame for carrying workpieces. A traveling mechanism and a lifting mechanism are connected to the frame. The traveling mechanism is used to drive the frame to move, and the lifting mechanism is used to drive the frame to rise or fall. Rollers are rotatably connected to both ends of the frame. The rollers can abut against the workpieces on the frame. The frame is provided with a rotary drive mechanism to drive the rollers to rotate.

2. The welding transport trolley according to claim 1, characterized in that, The walking mechanism includes a connecting frame, a driven walking wheel axle, and a walking wheel. The connecting frame is connected to the outside of the frame. The driven walking wheel axle is vertically rotatably connected inside the connecting frame. The walking wheel is located inside the connecting frame and is coaxially rotatably connected to the driven walking wheel axle. The bottom side of the walking wheel is located below the connecting frame.

3. A welding transport trolley according to claim 2, characterized in that, One side of the connecting frame is threaded with a locking screw. Tightening the locking screw will cause the locking screw to press against the end of the traveling wheel.

4. A welding transport trolley according to any one of claims 1-3, characterized in that, The walking mechanism is provided in two sets, which are located on the left and right sides of the frame, respectively. Each set of walking mechanisms consists of two parts, which are located on both sides of the frame in the direction of movement.

5. A welding transport trolley according to claim 1, characterized in that, The lifting mechanism includes a fixed plate and a telescopic component. The fixed plate is connected to the frame, and the fixed part of the telescopic component is connected to the fixed plate.

6. A welding transport trolley according to claim 5, characterized in that, The output end of the telescopic component is connected to a support plate.

7. A welding transport trolley according to any one of claims 1-3 or 5-6, characterized in that, The lifting mechanism is provided in two sets, which are located on the left and right sides of the frame, respectively. Each set contains two lifting mechanisms, which are located on both sides of the frame in the direction of movement.

8. A welding transport trolley according to claim 1, characterized in that, The rotary drive mechanism includes a motor, a reducer, and a drive roller shaft. The drive roller shaft is rotatably connected to the frame, and the roller is coaxially and fixedly connected to the drive roller shaft. The output end of the reducer is connected to the drive roller shaft. The motor drives the drive roller shaft to rotate through the reducer.

9. A welding transport trolley according to claim 1, characterized in that, The frame is connected to two sets of traction lugs, which are located on the left and right sides of the frame, respectively. Each set of traction lugs consists of two lugs, which are located on opposite sides of the frame in the direction of movement.

10. A welding transport trolley according to any one of claims 1-3 or 8-9, characterized in that, A level instrument is installed on the frame.

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