Transportation trolley

Abstract

The utility model belongs to the technical field of expansion joint transportation, and particularly relates to a transportation trolley which comprises a rack and a plurality of wheels, the rack comprises a base, a first support and a second support, the first support and the second support are arranged on the base, and the first support and the second support are arranged at intervals in the first direction; an accommodating space for accommodating the expansion joint is formed between the first bracket and the second bracket; the transportation trolley is used for transporting the expansion joints, operation is easy, and time and labor are saved.

Description

Technical Field

[0001] This application belongs to the field of expansion joint transportation technology, and particularly relates to a transportation trolley. Background Technology

[0002] In nuclear power plants, expansion joints are used to connect two pipes. These expansion joints are made of rubber, which helps to absorb shocks by utilizing the elasticity of rubber. However, with prolonged use, expansion joints may be at risk of aging, so they need to be replaced during major overhauls. However, expansion joints are large, and transporting new expansion joints from the warehouse to the plant is a complicated, time-consuming, and labor-intensive process.

[0003] The above statements are for the purpose of providing background information in relation to this application only and do not necessarily constitute prior art. Utility Model Content

[0004] The purpose of this application is to provide a transport trolley, including but not limited to solving the problems of cumbersome, time-consuming and labor-intensive operation of expansion joint transportation in related technologies.

[0005] To achieve the above objectives, the technical solution of this application embodiment is: a transport trolley for transporting expansion joints; the transport trolley includes a frame and multiple wheels, the frame includes a base and a first support and a second support disposed on the base, the first support and the second support are spaced apart along a first direction, and a receiving space for accommodating expansion joints is formed between the first support and the second support; multiple wheels are disposed at the bottom of the base.

[0006] Optionally, when the expansion joint is located within the receiving space, the first direction is parallel to the axis of the expansion joint.

[0007] Optionally, the transport trolley also includes a first support rod and a second support rod for passing through bolt holes in the expansion joint. The first support rod and the second support rod are spaced apart along a second direction, which is perpendicular to the first direction. The two ends of the first support rod are respectively used for detachable connection with the first bracket and the second bracket, and the two ends of the second support rod are respectively used for detachable connection with the first bracket and the second bracket.

[0008] Optionally, the first bracket is provided with two first blocking members arranged at intervals along the second direction, and the end of the first support rod near the first bracket and the end of the second support rod near the first bracket are located between the two first blocking members; the second bracket is provided with two second blocking members arranged at intervals along the second direction, and the end of the first support rod near the second bracket and the end of the second support rod near the second bracket are located between the two second blocking members.

[0009] Optionally, each of the two first blocking members includes a first connecting part and a first blocking part arranged perpendicularly to each other. The first connecting part of the two first blocking members is connected to the top of the first bracket. The first blocking part of the two first blocking members is located on the side of the corresponding first connecting part facing away from the base. The first connecting part of the two first blocking members is located between the first blocking parts of the two first blocking members. The first connecting parts of the two first blocking members are respectively used to support the end of the first support rod near the first bracket and the end of the second support rod near the first bracket. The end of the first support rod near the first bracket and the end of the second support rod near the first bracket are located between the first blocking parts of the two first blocking members. And / or, both second blocking members include a second connecting portion and a second blocking portion arranged perpendicularly to each other. The second connecting portions of the two second blocking members are connected to the top of the second bracket. The second blocking portions of the two second blocking members are located on the side of the corresponding second connecting portion facing away from the base. The second connecting portions of the two second blocking members are located between the second blocking portions of the two second blocking members. The second connecting portions of the two second blocking members are respectively used to support the end of the first support rod near the second bracket and the end of the second support rod near the second bracket. The end of the first support rod near the second bracket and the end of the second support rod near the second bracket are located between the second blocking portions of the two second blocking members.

[0010] Optionally, the base is provided with clearance space to avoid the expansion joint.

[0011] Optionally, the height of the first bracket and the height of the second bracket are greater than the height of the axis of the expansion joint.

[0012] Optionally, the transport trolley also includes a connecting rod for passing through the central hole of the expansion joint, with both ends of the connecting rod being detachably connected to the first bracket and the second bracket, respectively.

[0013] Optionally, the first support includes a first crossbar, a plurality of first support rods, and a plurality of second support rods. The lower ends of the plurality of first support rods are connected to the base at intervals, and the upper ends of the plurality of first support rods are relatively close to each other and connected to one end of the first crossbar. The lower ends of the plurality of second support rods are connected to the base at intervals, and the upper ends of the plurality of second support rods are relatively close to each other and connected to the other end of the first crossbar. And / or, the second support includes a second crossbar, a plurality of third support rods, and a plurality of fourth support rods. The lower ends of the plurality of third support rods are connected to the base at intervals, and the upper ends of the plurality of third support rods are relatively close to each other and connected to one end of the second crossbar. The lower ends of the plurality of fourth support rods are connected to the base at intervals, and the upper ends of the plurality of fourth support rods are relatively close to each other and connected to the other end of the second crossbar.

[0014] Optionally, at least one of the multiple wheels is a swivel wheel.

[0015] The above-mentioned technical solutions of one or more of the transport trolleys provided by this utility model have at least one of the following technical effects: When the transport trolley is used, the expansion joint is placed in the accommodating space of the frame. The two sides of the expansion joint can be supported by the first bracket and the second bracket, which helps to improve the fixed stability of the expansion joint in the frame and improve the transport safety of the expansion joint; After the expansion joint is placed in the accommodating space, the wheels at the bottom of the transport trolley can be directly pushed to rotate, thereby realizing the transport of the expansion joint. Compared with the method of forming a transport frame by splicing scaffolding on site, this method of directly using the transport trolley to transport the expansion joint is simple to operate and saves time and effort; The transport speed of the transport trolley can be controlled by pushing it manually, which helps to improve the transport safety.

[0016] The above description is only an overview of the technical solution of this application. In order to better understand the technical means of this application and to implement it in accordance with the contents of the specification, and to make the above and other objects, features and advantages of this application more obvious and understandable, the following are specific embodiments of this application. Attached Figure Description

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

[0018] Figure 1 This is a schematic diagram of an expansion joint mounted on a transport trolley, provided for some embodiments of this application.

[0019] Figure 2 for Figure 1 The transport vehicle shown.

[0020] The following are the labeling elements in the figure:

[0021] 100. Transport trolley; 10. Frame; 11. Base; 111. Clearance space; 12. First support; 121. First crossbar; 122. First support rod; 123. Second support rod; 13. Second support; 131. Second crossbar; 132. Third support rod; 133. Fourth support rod; 14. Accommodation space; 20. Wheel; 31. First support rod; 32. Second support rod; 41. First blocking member; 411. First connecting part; 412. First blocking part; 42. Second blocking member; 421. Second connecting part; 422. Second blocking part; 50. Connecting rod; 200. Expansion joint; 210. Bolt hole; 220. Center hole. Detailed Implementation

[0022] To make the objectives, technical solutions, and advantages of the embodiments of this application clearer, the technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, not all embodiments. Based on the embodiments of this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application.

[0023] In the description of the embodiments of this application, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Thus, a feature defined with "first" and "second" may explicitly or implicitly include at least one of that feature.

[0024] In the description of this application, "multiple" means at least two, such as two, three, etc., unless otherwise expressly and specifically limited.

[0025] In this application, unless otherwise expressly specified and limited, the terms "installation," "connection," "linking," "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components, unless otherwise expressly limited. Those skilled in the art can understand the specific meaning of the above terms in this application according to the specific circumstances.

[0026] In this application, unless otherwise expressly specified and limited, "above" or "below" the second feature can mean that the first feature is in direct contact with the second feature, or that the first feature is in indirect contact with the second feature through an intermediate medium. Furthermore, "above," "on top of," and "over" the second feature can mean that the first feature is directly above or diagonally above the second feature, or simply that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature can mean that the first feature is directly below or diagonally below the second feature, or simply that the first feature is at a lower horizontal level than the second feature.

[0027] In the description of this application, it should be understood that the terms "inner", "outer", "side", "upper", "bottom", "front", "rear", etc., indicating the orientation or positional relationship are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this application.

[0028] In the description of this application, it should be noted that the term "and / or" is merely a description of the relationship between related objects, indicating that there can be three relationships. For example, A and / or B can represent three situations: A exists alone, A and B exist simultaneously, and B exists alone.

[0029] It should also be noted that in the embodiments of this application, the same reference numerals are used to represent the same component or part. For the same part in the embodiments of this application, the reference numerals may only be used to mark one part or component as an example. It should be understood that the reference numerals are also applicable to other identical parts or components.

[0030] In nuclear power plants, expansion joints are used to connect two pipes. These expansion joints are made of rubber, which helps to absorb shocks by utilizing the elasticity of rubber. However, with prolonged use, expansion joints may age, so they need to be replaced during major overhauls. In practice, however, expansion joints are large, so they are usually transported on-site using scaffolding assembled into a transport frame. The scaffolding assembly is cumbersome, time-consuming, and labor-intensive. In addition, transporting the expansion joints using a transport frame also poses significant safety risks.

[0031] Based on this, the transport trolley provided in this application embodiment can directly place the new expansion joint in the accommodating space of the frame. At the same time, the bottom of the base of the transport trolley is equipped with multiple wheels, which can directly push the transport trolley for transportation, making the transportation operation of the expansion joint simple and convenient, saving time and effort. In addition, using this dedicated transport trolley to transport the expansion joint also helps to improve the safety of the expansion joint transportation.

[0032] Of course, the transport trolley can also transport components similar to expansion joints, which are not limited here.

[0033] The following combination Figure 1 and Figure 2 The image shows a transport vehicle according to an embodiment of this application.

[0034] In this application, for ease of description, the Z-axis in the accompanying drawings represents the up-down direction, with the positive direction of the Z-axis representing up and the negative direction of the Z-axis representing down. The Y-axis in the accompanying drawings represents the left-right direction, with the positive direction of the Y-axis representing left and the negative direction of the Y-axis representing right. The X-axis in the accompanying drawings represents the front-back direction, with the positive direction of the X-axis representing front and the negative direction of the X-axis representing back.

[0035] In some embodiments, the transport trolley 100 is used to transport the expansion joint 200. The transport trolley 100 includes a frame 10 and a plurality of wheels 20. The frame 10 includes a base 11 and a first support 12 and a second support 13 disposed on the base 11. The first support 12 and the second support 13 are spaced apart along a first direction Y, and a receiving space 14 for accommodating the expansion joint 200 is formed between the first support 12 and the second support 13. The plurality of wheels 20 are disposed at the bottom of the base 11.

[0036] The frame 10 can refer to the main component of the transport trolley 100. The frame 10 is used to support and fix the expansion joint 200. The frame 10 can be assembled from multiple rods, and its structure is simple and easy to process and manufacture.

[0037] The frame 10 includes a base 11, a first support 12, and a second support 13. The base 11 can refer to the component at the bottom of the frame 10. The first support 12 and the second support 13 can refer to the supports spaced apart on opposite sides of the base 11. The first support 12 and the second support 13 are arranged alternately in the left-right direction. The first support 12 can be called the left support, and the second support 13 can be called the right support. The space formed between the first support 12 and the second support 13 is the receiving space 14. The expansion joint 200 is placed in the receiving space 14. The left and right sides of the expansion joint 200 are supported and fixed by the first support 12 and the second support 13, respectively. The support and fixation effect of the expansion joint 200 is good, which helps to improve the safety of the expansion joint 200 during transportation. In addition, the frame 10 adopts the structure of base 11, first support 12, and second support 13, which is simple in structure and easy to process and manufacture.

[0038] For example, the first support 12 and the second support 13 can be assembled from multiple rods.

[0039] Wheels 20 refer to wheels located at the bottom of the frame 10. The rotation of wheels 20 enables the transportation of the washing vehicle. There are multiple wheels 20, which can support the frame 10 and the expansion joint 200, providing multi-point support and facilitating the transportation of the trolley 100. In addition, multiple wheels 20 can distribute the weight of the frame 10 and the expansion joint 200, reducing the risk of overload and extending the service life of the wheels 20.

[0040] For example, the base 11 has a rectangular frame structure and four wheels 20. The four wheels 20 are respectively located at the four corners of the base 11. This arrangement allows the four wheels 20 to provide good support and facilitates the movement of the transport trolley 100.

[0041] In this embodiment of the application, the transport trolley 100 is used such that the expansion joint 200 is placed in the receiving space 14 of the frame 10. The two sides of the expansion joint 200 are supported by the first bracket 12 and the second bracket 13, which helps to improve the stability of the expansion joint 200 in the frame 10 and improve the safety of transporting the expansion joint 200. After the expansion joint 200 is placed in the receiving space 14, the wheels 20 at the bottom of the transport trolley 100 can be directly pushed to rotate, thereby realizing the transport of the expansion joint 200. Compared with the method of forming a transport frame by splicing scaffolding on site, this method of directly using the transport trolley 100 to transport the expansion joint 200 is simple to operate and saves time and effort. The transport speed of the transport trolley 100 can be controlled by manpower, which helps to improve the safety of transport.

[0042] In some embodiments, when the expansion joint 200 is located within the receiving space 14, the first direction Y is parallel to the axial direction of the expansion joint 200.

[0043] The first direction Y is parallel to the axis of the expansion joint 200. It can be understood that after the expansion joint 200 is placed in the receiving space 14, the expansion joint 200 is in a vertical state, that is, the axis of the expansion joint 200 is set horizontally. The expansion joint 200 adopts a vertical transportation method. The length and width of the transport trolley 100 are small, which can facilitate the transport of the transport trolley 100 in a small space in the factory. It can also reduce the risk of the expansion joint 200 contacting other components, which helps to reduce the risk of damage to the expansion joint 200 during transportation.

[0044] In some embodiments, the transport trolley 100 further includes a first support rod 31 and a second support rod 32 for passing through bolt holes 210 of the expansion joint 200. The first support rod 31 and the second support rod 32 are spaced apart along a second direction X, which is perpendicular to the first direction Y. The two ends of the first support rod 31 are respectively used for detachable connection with the first bracket 12 and the second bracket 13, and the two ends of the second support rod 32 are respectively used for detachable connection with the first bracket 12 and the second bracket 13.

[0045] The bolt hole 210 of the expansion joint 200 can refer to a through hole structure provided on the flange of the expansion joint 200, which is connected to the pipeline by fasteners such as bolts and screws.

[0046] For example, the expansion joint 200 has multiple bolt holes 210 on both opposite flanges, with the bolt holes 210 on opposite sides corresponding one-to-one.

[0047] The first support rod 31 and the second support rod 32 are inserted into two oppositely arranged bolt holes 210. The first support rod 31 and the second support rod 32 are arranged front and rear, and the first support rod 31 and the second support rod 32 support the front and rear sides of the frame 10, thus supporting the expansion joint 200.

[0048] One end of the first support rod 31 is detachably connected to the first bracket 12, and the other end of the second support rod 32 is detachably connected to the second bracket 13. The first support rod 31 can be removed from the first bracket 12 and the second bracket 13, which facilitates the insertion or removal of the first support rod 31 from the bolt hole 210 of the expansion joint 200, thereby facilitating the installation or removal of the expansion joint 200 from the transport trolley 100. Both ends of the first support rod 31 can be connected to the first bracket 12 and the second bracket 13, so that the first bracket 12 and the second bracket 13 can support the first support rod 31, thereby supporting the function of the expansion joint 200.

[0049] For example, the first support rod 31 and the first bracket 12 can be connected by a detachable method such as snap-fit ​​or screw-fit; the first support rod 31 and the second bracket 13 can be connected by a detachable method such as snap-fit ​​or screw-fit.

[0050] One end of the second support rod 32 is detachably connected to the first bracket 12, and the other end of the second support rod 32 is detachably connected to the second bracket 13. The second support rod 32 can be removed from the first bracket 12 and the second bracket 13, which facilitates the insertion or removal of the second support rod 32 into or out of the bolt hole 210 of the expansion joint 200, thereby facilitating the installation or removal of the expansion joint 200 from the transport trolley 100. Both ends of the second support rod 32 can be connected to the first bracket 12 and the second bracket 13, so that the first bracket 12 and the second bracket 13 can support the second support rod 32, thereby supporting the function of the expansion joint 200.

[0051] For example, the second support rod 32 and the first bracket 12 can be connected by a detachable method such as snap-fit ​​or screw-fit; the second support rod 32 and the second bracket 13 can be connected by a detachable method such as snap-fit ​​or screw-fit.

[0052] By adopting the technical solution of this embodiment, the expansion joint 200 is installed on the first bracket 12 and the second bracket 13 through the first support rod 31 and the second support rod 32. The weight of the expansion joint 200 can be distributed to the first bracket 12 and the second bracket 13 through the first support rod 31 and the second support rod 32, so that the first bracket 12 and the second bracket 13 are subjected to force as a whole, improving the uniformity of the force on the frame 10 and helping to improve the service life of the transport trolley 100.

[0053] In some embodiments, the first bracket 12 is provided with two first blocking members 41 arranged at intervals along the second direction X, and the end of the first support rod 31 near the first bracket 12 and the end of the second support rod 32 near the first bracket 12 are located between the two first blocking members 41; the second bracket 13 is provided with two second blocking members 42 arranged at intervals along the second direction X, and the end of the first support rod 31 near the second bracket 13 and the end of the second support rod 32 near the second bracket 13 are located between the two second blocking members 42.

[0054] The first bracket 12 and the second bracket 13 can limit the left and right sides of the expansion joint 200. Two first blocking members 41 are respectively arranged on the front and rear sides of the first bracket 12, and two second blocking members 42 are respectively arranged on the front and rear sides of the second bracket 13. The first support rod 31 and the second support rod 32 are located between the two first blocking members 41 and the two second blocking members 42, which can realize the front and rear limiting of the first support rod 31 and the second support rod 32, so that the expansion joint 200 can be stably fixed in the receiving space 14. The blocking method using the first blocking members 41 and the second blocking members 42 has a simple structure, good blocking and limiting effect, and makes the installation and operation of the expansion joint 200 more convenient.

[0055] In some embodiments, each of the two first blocking members 41 includes a first connecting portion 411 and a first blocking portion 412 arranged perpendicularly. The first connecting portion 411 of the two first blocking members 41 is connected to the top of the first bracket 12. The first blocking portion 412 of the two first blocking members 41 is located on the side of the corresponding first connecting portion 411 facing away from the base 11. The first connecting portion 411 of the two first blocking members 41 is located between the first blocking portions 412 of the two first blocking members 41. The first connecting portion 411 of the two first blocking members 41 is used to support the end of the first support rod 31 near the first bracket 12 and the end of the second support rod 32 near the first bracket 12, respectively. The end of the first support rod 31 near the first bracket 12 and the end of the second support rod 32 near the first bracket 12 are located between the first blocking portions 412 of the two first blocking members 41.

[0056] The first blocking member 41 has an L-shaped structure, that is, the first connecting part 411 and the first blocking part 412 form an L-shaped structure. The two first blocking members 41 are symmetrically arranged. The first connecting parts 411 of the two first blocking members 41 are located on the front and rear sides of the top of the first bracket 12. The first blocking part 412 is located on the upper side of the first connecting part 411. The left end of the first support rod 31 abuts against the first connecting part 411 of one of the first blocking members 41, and the left end of the second support rod 32 abuts against the first connecting part 411 of the other first blocking member 41. At the same time, the left ends of the first support rod 31 and the left ends of the second support rod 32 are respectively blocked by the first blocking parts 412 of the two first blocking members 41, thereby realizing the front and rear limit of the first support rod 31 and the second support rod 32 and reducing the amount of movement of the expansion joint 200.

[0057] By adopting the technical solution of this embodiment, the first blocking member 41 adopts an L-shaped structure, which is simple in structure and facilitates the installation and disassembly of the first support rod 31 and the second support rod 32.

[0058] In some embodiments, each of the two second blocking members 42 includes a second connecting portion 421 and a second blocking portion 422 arranged perpendicularly. The second connecting portion 421 of the two second blocking members 42 is connected to the top of the second bracket 13. The second blocking portion 422 of the two second blocking members 42 is located on the side of the corresponding second connecting portion 421 facing away from the base 11. The second connecting portion 421 of the two second blocking members 42 is located between the second blocking portions 422 of the two second blocking members 42. The second connecting portion 421 of the two second blocking members 42 is used to support the end of the first support rod 31 near the second bracket 13 and the end of the second support rod 32 near the second bracket 13, respectively. The end of the first support rod 31 near the second bracket 13 and the end of the second support rod 32 near the second bracket 13 are located between the second blocking portions 422 of the two second blocking members 42.

[0059] The second blocking member 42 has an L-shaped structure, that is, the second connecting part 421 and the second blocking part 422 form an L-shaped structure. The two second blocking members 42 are symmetrically arranged. The second connecting parts 421 of the two second blocking members 42 are located on the front and rear sides of the top of the second bracket 13. The second blocking parts 422 are located on the upper side of the second connecting parts 421. The right end of the first support rod 31 abuts against the second connecting part 421 of one second blocking member 42, and the right end of the second support rod 32 abuts against the second connecting part 421 of the other second blocking member 42. At the same time, the right ends of the first support rod 31 and the second support rod 32 are respectively blocked by the second blocking parts 422 of the two second blocking members 42, thereby realizing the front and rear limit of the first support rod 31 and the second support rod 32 and reducing the amount of movement of the expansion joint 200.

[0060] By adopting the technical solution of this embodiment, the second blocking member 42 adopts an L-shaped structure, which is simple in structure and facilitates the installation and disassembly of the first support rod 31 and the second support rod 32.

[0061] In some embodiments, each of the two first blocking members 41 includes a first connecting portion 411 and a first blocking portion 412 arranged perpendicularly. The first connecting portion 411 of the two first blocking members 41 is connected to the top of the first bracket 12, and the first blocking portion 412 of the two first blocking members 41 is located on the side of the corresponding first connecting portion 411 facing away from the base 11. The first connecting portion 411 of the two first blocking members 41 is located between the first blocking portions 412 of the two first blocking members 41. The first connecting portion 411 of the two first blocking members 41 is used to support the end of the first support rod 31 near the first bracket 12 and the end of the second support rod 32 near the first bracket 12, respectively. The end of the first support rod 31 near the first bracket 12 and the end of the second support rod 32 near the first bracket 12 are located at the first blocking portion 41 of the two first blocking members 41. Between 2; each of the two second blocking members 42 includes a second connecting part 421 and a second blocking part 422 arranged perpendicularly. The second connecting part 421 of the two second blocking members 42 is connected to the top of the second bracket 13. The second blocking part 422 of the two second blocking members 42 is located on the side of the corresponding second connecting part 421 facing away from the base 11. The second connecting part 421 of the two second blocking members 42 is located between the second blocking parts 422 of the two second blocking members 42. The second connecting part 421 of the two second blocking members 42 is used to support the end of the first support rod 31 near the second bracket 13 and the end of the second support rod 32 near the second bracket 13, respectively. The end of the first support rod 31 near the second bracket 13 and the end of the second support rod 32 near the second bracket 13 are located between the second blocking parts 422 of the two second blocking members 42. The first support rod 31 and the second support rod 32 are placed between the first blocking portion 412 of the two first blocking members 41 and the second blocking portion 422 of the two second blocking members 42, thereby limiting the front and rear movement of the first support rod 31 and the second support rod 32, and also limiting the front and rear movement of the expansion joint 200 within the transport trolley 100. Furthermore, the limiting structure is simple, making the loading and unloading operations of the expansion joint 200 simpler and faster.

[0062] In some embodiments, the base 11 is provided with a clearance space 111 for accommodating the expansion joint 200.

[0063] The clearance space 111 can refer to the space in the base 11 used to accommodate the expansion joint 200. On the one hand, the setting of this space can prevent the base 11 from contacting the expansion joint 200, reducing the risk of damage caused by the base 11 supporting the heavy expansion joint 200. On the other hand, the setting of the clearance space 111 can also reduce the transport height of the expansion joint 200, which is conducive to lowering the center of gravity of the transport trolley 100 and the expansion joint 200 during transport, and is conducive to improving the safety of transporting the expansion joint 200.

[0064] In some embodiments, the height of the first bracket 12 and the height of the second bracket 13 are greater than the height of the axis of the expansion joint 200.

[0065] The expansion joint 200 has a ring structure, and the center of gravity of the expansion joint 200 is located on the axis of the expansion joint 200. The height of the first support 12 and the second support 13 is greater than the height of the center of gravity of the expansion joint 200. The first support 12 and the second support 13 provide good support stability for the expansion joint 200, which is conducive to improving the safety of the transportation of the expansion joint 200.

[0066] In some embodiments, the transport trolley 100 further includes a connecting rod 50 for passing through the central hole 220 of the expansion joint 200, the two ends of the connecting rod 50 being detachably connected to the first bracket 12 and the second bracket 13, respectively.

[0067] On the one hand, the connecting rod 50 can connect the first support 12 and the second support 13, which can improve the structural strength of the first support 12 and the second support 13, improve the support stability of the first support 12 and the second support 13 for the expansion joint 200, and improve the stability and safety of the expansion joint 200 during transportation. On the other hand, the connecting rod 50 passes through the central hole 220 of the expansion joint 200, and the connecting rod 50 can limit the front and rear movement of the expansion joint 200, reduce the amount of movement of the expansion joint 200, and improve the safety and stability of the expansion joint 200 during transportation.

[0068] The two ends of the connecting rod 50 are detachably connected to the first bracket 12 and the second bracket 13 respectively. The connecting rod 50 can be removed from the first bracket 12 and the second bracket 13, so that the expansion joint 200 can be smoothly installed in the receiving space 14.

[0069] In some examples, the connecting rod 50 and the first bracket 12 can be connected by a detachable method such as snap-fit ​​or screw-fit; the connecting rod 50 and the second bracket 13 can be connected by a detachable method such as snap-fit ​​or screw-fit.

[0070] For example, the connecting rod 50 is a screw rod. After passing through the first bracket 12 and the second bracket 13, the screw rod is screwed into the nut, thereby realizing the connection between the first bracket 12 and the second bracket 13.

[0071] In some examples, there are two connecting rods 50, which are arranged one in front of the other. The connecting rod 50 located in front is close to the first support rod 31 located in front, and the connecting rod 50 located behind is close to the second support rod 32 located behind. In this way, the mutual cooperation and limiting effect between the two connecting rods 50, the first support rod 31 and the second support rod 32 helps to improve the front and rear limiting stability of the expansion joint 200, reduce the amount of movement of the expansion joint 200, and improve the safety of transporting the expansion joint 200.

[0072] In some embodiments, the first support 12 includes a first crossbar 121, a plurality of first support rods 122 and a plurality of second support rods 123. The lower ends of the plurality of first support rods 122 are connected to the base 11 at intervals, and the upper ends of the plurality of first support rods 122 are relatively close to each other and connected to one end of the first crossbar 121. The lower ends of the plurality of second support rods 123 are connected to the base 11 at intervals, and the upper ends of the plurality of second support rods 123 are relatively close to each other and connected to the other end of the first crossbar 121.

[0073] The first crossbar 121 connects multiple first support rods 122 and multiple second support rods 123 together, which helps to improve the structural strength of the first support 12. Furthermore, the lower ends of the multiple first support rods 122 are distributedly connected to the base 11, while the upper ends of the multiple first support rods 122 are relatively close and connected to the same end of the first crossbar 121. In this way, the supporting force of the first crossbar 121 on the expansion joint 200 can be distributed to multiple positions on the base 11 through the multiple first support rods 122, forming multi-point support. This design helps to improve the structural strength of the first support 12. Similarly, the lower ends of the multiple second support rods 123 are distributedly connected to the base 11, while the upper ends of the multiple second support rods 123 are relatively close and connected to the same end of the first crossbar 121. This way, the supporting force of the first crossbar 121 on the expansion joint 200 can be distributed to multiple positions on the base 11 through the multiple second support rods 123, forming multi-point support. This design helps to improve the structural strength of the first support 12.

[0074] For example, multiple first support rods 122 are inclined, with their lower ends distributedly connected to the base 11, and their upper ends converging and connected to the front end of the first crossbar 121. A first connecting portion 411 of a first blocking member 41 is connected to the front end of the first crossbar 121, and a first support rod 31 also abuts against the first connecting portion 411. In this way, the weight of the expansion joint 200 can be distributed to multiple positions on the base 11 by the multiple inclined first support rods 122, which can improve the support stability and transportation safety of the expansion joint 200.

[0075] For example, multiple second support rods 123 are inclined, with their lower ends distributedly connected to the base 11, and their upper ends converging and connected to the front end of the first crossbar 121. The first connecting portion 411 of another first blocking member 41 is connected to the front end of the first crossbar 121, and the second support rod 32 also abuts against the first connecting portion 411. In this way, the weight of the expansion joint 200 can be distributed to multiple positions on the base 11 by the multiple inclined second support rods 123, which can improve the support stability and transportation safety of the expansion joint 200.

[0076] In some embodiments, the second support 13 includes a second crossbar 131, a plurality of third support rods 132 and a plurality of fourth support rods 133. The lower ends of the plurality of third support rods 132 are spaced apart and connected to the base 11, and the upper ends of the plurality of third support rods 132 are relatively close to each other and connected to one end of the second crossbar 131. The lower ends of the plurality of fourth support rods 133 are spaced apart and connected to the base 11, and the upper ends of the plurality of fourth support rods 133 are relatively close to each other and connected to the other end of the second crossbar 131.

[0077] The second crossbar 131 connects multiple third supports 132 and multiple fourth supports 133 together, which helps to improve the structural strength of the second support 13. Furthermore, the lower ends of the multiple third supports 132 are distributedly connected to the base 11, while the upper ends of the multiple third supports 132 are relatively close and connected to the same end of the second crossbar 131. In this way, the supporting force of the second crossbar 131 on the expansion joint 200 can be distributed to multiple positions on the base 11 through the multiple third supports 132, forming multi-point support. This design helps to improve the structural strength of the second support 13. Similarly, the lower ends of the multiple fourth supports 133 are distributedly connected to the base 11, while the upper ends of the multiple fourth supports 133 are relatively close and connected to the same end of the second crossbar 131. This design also helps to improve the structural strength of the second support 13.

[0078] For example, multiple third support rods 132 are inclined, with their lower ends distributedly connected to the base 11, and their upper ends converging and connected to the front end of the second crossbar 131. A first connecting portion 411 of a first blocking member 41 is connected to the front end of the second crossbar 131, and a first support rod 31 also abuts against the first connecting portion 411. In this way, the weight of the expansion joint 200 can be distributed to multiple positions on the base 11 by the multiple inclined third support rods 132, which can improve the support stability and transportation safety of the expansion joint 200.

[0079] For example, multiple fourth support rods 133 are inclined, with their lower ends dispersedly connected to the base 11, and their upper ends converging and connected to the front end of the second crossbar 131. The first connecting part 411 of another first blocking member 41 is connected to the front end of the second crossbar 131, and the second support rod 32 also abuts against the first connecting part 411. In this way, the weight of the expansion joint 200 can be distributed to multiple positions of the base 11 by the multiple inclined fourth support rods 133, which can improve the support stability and transportation safety of the expansion joint 200.

[0080] In some embodiments, the first support 12 includes a first crossbar 121, a plurality of first support rods 122, and a plurality of second support rods 123. The lower ends of the plurality of first support rods 122 are spaced apart and connected to the base 11, and the upper ends of the plurality of first support rods 122 are relatively close to each other and connected to one end of the first crossbar 121. The lower ends of the plurality of second support rods 123 are spaced apart and connected to the base 11, and the upper ends of the plurality of second support rods 123 are relatively close to each other and connected to the other end of the first crossbar 121. The second support 13 includes a second crossbar 131, a plurality of third support rods 132, and a plurality of fourth support rods 133. The lower ends of the plurality of third support rods 132 are spaced apart and connected to the base 11, and the upper ends of the plurality of third support rods 132 are relatively close to each other and connected to one end of the second crossbar 131. The lower ends of the plurality of fourth support rods 133 are spaced apart and connected to the base 11, and the upper ends of the plurality of fourth support rods 133 are relatively close to each other and connected to the other end of the second crossbar 131. The first support 12 and the second support 13 have good structural strength, which is beneficial to improving the transportation stability and safety of the expansion joint 200.

[0081] In some embodiments, at least one of the plurality of wheels 20 is a swivel wheel.

[0082] The number of wheels 20 can be two, three, or more than four; some of the multiple wheels 20 are swivel wheels or all of them are swivel wheels. The swivel wheels make it easy for the transport trolley 100 to turn, so that the transport trolley 100 can move in a small factory space.

[0083] In some embodiments, wheel 20 may refer to wheel 20 with locking element, that is, after the transport trolley 100 moves to a preset position, wheel 20 can be locked so that the transport trolley 100 stops at the preset position to facilitate loading and unloading of expansion joint 200.

[0084] The transport trolley 100 provided in this embodiment facilitates the direct transport of the expansion joint 200 from the warehouse to the replacement location within the factory, saving project maintenance time and reducing the risk of personnel and spare parts being bumped during transport. The transport trolley 100 can be loaded in the warehouse, turned and unloaded within the factory. With a low center of gravity, the transport trolley 100 can be manually pushed forward, and its slow speed improves transport safety. Each expansion joint 200 has an outer diameter of 3.6m, a width of 0.55m, and a weight of approximately 3T. Due to its large size and weight, the expansion joint 200 is equipped with multiple wheels 20 to reduce the risk of overloading of a single wheel caused by impacts during the transport trolley 100's movement. Since the transported expansion joint 200 has a circular structure, its center of gravity is in the middle and cannot directly bear the weight. Therefore, based on the structure of the expansion joint 200, a first support rod 31 and a second support rod 32 are inserted into the bolt holes 210 of the expansion joint 200. The weight of the expansion joint 200 is distributed throughout the frame 10 through the first support rod 31 and the second support rod 32. At the same time, the design of inserting the first support rod 31 and the second support rod 32 into the bolt holes 210, together with the first blocking member 41, the second component, and the two connecting rods 50, can reduce the movement of the expansion joint 200 during transportation. In addition, the spacing of the first support 12 and the second support 13 of the transport trolley 100 also facilitates loading and unloading of the expansion joint 200 after it has been lifted to a short height.

[0085] During the replacement process, the use of the transport trolley 100 reduced the lifting and transportation risk level from Level 2 (high-risk operation) to Level 3 (high-risk operation). For each expansion joint 200, the labor cost for scaffolding and other supporting personnel was reduced by approximately 4 person-hours, and the transportation time was shortened from 8 hours to 4 hours. Using the transport trolley 100 effectively reduces the high risk of transportation, shortens the critical path of the overhaul, and reduces labor costs. This method can be widely adopted for the overhaul and replacement of expansion joints 200 at various bases. Using the transport trolley 100 also reduces the risk of collisions, making the transportation of expansion joints 200 more convenient and safer, reducing personnel safety risks, shortening the project time, and lowering labor costs.

[0086] The description of the various embodiments above tends to emphasize the differences between the various embodiments. The similarities or similarities between them can be referred to, and for the sake of brevity, they will not be repeated here.

[0087] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this application, and not to limit them. Although this application has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some or all of the technical features therein. These modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of this application, and they should all be covered within the scope of the claims and specification of this application. In particular, as long as there is no structural conflict, the various technical features mentioned in the embodiments can be combined in any way. This application is not limited to the specific embodiments disclosed herein, but includes all technical solutions falling within the scope of the claims.

Claims

1. A transport trolley for transporting expansion joints; characterized in that, The transport trolley includes: The frame includes a base and a first support and a second support disposed on the base. The first support and the second support are spaced apart along a first direction, and a receiving space for accommodating the expansion joint is formed between the first support and the second support. Multiple wheels are located at the bottom of the base; When the expansion joint is located within the receiving space, the first direction is parallel to the axial direction of the expansion joint; The transport trolley also includes a first support rod and a second support rod for passing through bolt holes in the expansion joint, the first support rod and the second support rod being spaced apart along a second direction, the second direction being perpendicular to the first direction; The two ends of the first support rod are respectively used for detachable connection with the first bracket and the second bracket, and the two ends of the second support rod are respectively used for detachable connection with the first bracket and the second bracket.

2. The transport trolley according to claim 1, characterized in that: The first bracket is provided with two first blocking members arranged at intervals along the second direction, and the end of the first support rod near the first bracket and the end of the second support rod near the first bracket are located between the two first blocking members; The second bracket is provided with two second blocking members arranged at intervals along the second direction, and the end of the first support rod near the second bracket and the end of the second support rod near the second bracket are located between the two second blocking members.

3. The transport trolley according to claim 2, characterized in that: Each of the two first blocking members includes a first connecting portion and a first blocking portion arranged perpendicularly to each other. The first connecting portion of the two first blocking members is connected to the top of the first bracket. The first blocking portion of the two first blocking members is located on the side of the corresponding first connecting portion facing away from the base. The first connecting portion of the two first blocking members is located between the first blocking portions of the two first blocking members. The first connecting portion of the two first blocking members is used to support the end of the first support rod near the first bracket and the end of the second support rod near the first bracket, respectively. The end of the first support rod near the first bracket and the end of the second support rod near the first bracket are located between the first blocking portions of the two first blocking members. And / or, each of the two second blocking members includes a second connecting portion and a second blocking portion arranged perpendicularly to each other. The second connecting portions of the two second blocking members are connected to the top of the second bracket. The second blocking portions of the two second blocking members are located on the side of the corresponding second connecting portion facing away from the base. The second connecting portions of the two second blocking members are located between the second blocking portions of the two second blocking members. The second connecting portions of the two second blocking members are respectively used to support the end of the first support rod near the second bracket and the end of the second support rod near the second bracket. The end of the first support rod near the second bracket and the end of the second support rod near the second bracket are located between the second blocking portions of the two second blocking members.

4. The transport trolley according to claim 1, characterized in that: The base is provided with clearance space to avoid the expansion joint.

5. The transport trolley according to any one of claims 1 to 4, characterized in that: The height of the first bracket and the height of the second bracket are greater than the height of the axis of the expansion joint.

6. The transport trolley according to any one of claims 1 to 4, characterized in that: The transport trolley also includes a connecting rod for passing through the central hole of the expansion joint, and the two ends of the connecting rod are detachably connected to the first bracket and the second bracket, respectively.

7. The transport trolley according to any one of claims 1 to 4, characterized in that: The first support includes a first crossbar, a plurality of first support rods and a plurality of second support rods. The lower ends of the plurality of first support rods are connected to the base at intervals, and the upper ends of the plurality of first support rods are relatively close to each other and connected to one end of the first crossbar. The lower ends of the plurality of second support rods are connected to the base at intervals, and the upper ends of the plurality of second support rods are relatively close to each other and connected to the other end of the first crossbar. And / or, the second support includes a second crossbar, a plurality of third supports and a plurality of fourth supports, the lower ends of the plurality of third supports being spaced apart and connected to the base, the upper ends of the plurality of third supports being relatively close to each other and connected to one end of the second crossbar; the lower ends of the plurality of fourth supports being spaced apart and connected to the base, the upper ends of the plurality of fourth supports being relatively close to each other and connected to the other end of the second crossbar.

8. The transport trolley according to any one of claims 1 to 4, characterized in that: At least one of the plurality of wheels is a swivel wheel.

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