Connecting assembly and supporting frame

Abstract

The utility model relates to the technical field of building supporting frames, in particular to a connecting assembly and a supporting frame. The connecting assembly is used for connecting the two rod-shaped structures and comprises a connecting piece, a limiting piece and two first fixing assemblies, and the limiting piece is fixedly connected with the connecting piece; the two ends of the connecting piece are fixedly connected with the two rod-shaped structures in a one-to-one correspondence mode through the two first fixing assemblies, and the limiting piece is connected with the two first fixing assemblies and arranged with the connecting piece in a spaced mode. Through the arrangement of the connecting assembly, the cross rod of the existing specification can be fully utilized, the utilization rate of the cross rod is increased, and meanwhile the supporting strength requirement of building design is met.

Description

Technical Field

[0001] This application relates to the field of building formwork support technology, and in particular to a connecting component and a support frame. Background Technology

[0002] During the construction process, support frames are generally set up for the support of building formwork. With the continuous improvement of the technical level of the construction industry, the component structure of the support frame is constantly improved and optimized, which further increases the spacing of the uprights of the support frame. The increase in the spacing of the uprights reduces the amount of materials used and lowers the cost, while still meeting the requirements of building construction.

[0003] However, the increased spacing between the uprights results in insufficient length of the existing support frame's crossbars, making it impossible to connect two adjacent uprights. Adding crossbars of new length requires a significant investment and also renders existing crossbars unusable, leading to waste. Utility Model Content

[0004] In view of this, this application provides a connecting component and a support frame that can make full use of existing crossbar specifications, improve the utilization rate of crossbars, and meet the support strength requirements of building design.

[0005] On one hand, embodiments of this application provide a connecting component for connecting two rod-shaped structures. The connecting component includes a connector, a limiting member, and two first fixing components. The limiting member is fixedly connected to the connector. The two ends of the connector are respectively fixedly connected to the two rod-shaped structures one-to-one through the two first fixing components. The limiting member is connected to the two first fixing components and is spaced apart from the connector.

[0006] The aforementioned connecting components can be applied to the crossbars of the support frame. The aforementioned rod-shaped structures can be crossbars of the original specifications of the support frame. Two rod-shaped structures are connected together by a connector, a limiting member, and two first fixing components. The two ends of the connector are respectively connected to a rod-shaped structure by a first fixing component, and the limiting member is connected to both the connector and the first fixing component, so that the connector, limiting member, and first fixing component are relatively fixed. The connector, limiting member, and first fixing component can share the pressure, improve the structural stability between the connector and the limiting member, so that the two rod-shaped structures connected by the aforementioned connecting components can meet the building design requirements for support strength, thereby making full use of the existing specifications of the crossbars, improving the utilization rate of the crossbars, and reducing costs.

[0007] In at least one embodiment, the first fixing component includes a connector for fixed connection with the rod-shaped structure, the connector having a connecting groove; the two ends of the connector are respectively disposed in the connecting grooves of the connectors of the two first fixing components, and the two ends of the connector are respectively connected to the connectors of the two first fixing components.

[0008] The connecting grooves of the two first fixing components limit the thickness of the connector on both sides, thereby improving the connection stability between the connector head of the first fixing component and the connector. Since the connector head is fixedly connected to the rod-shaped structure, the connection stability between the rod-shaped structure and the connector is further improved.

[0009] In at least one embodiment, the connector includes a first connecting plate and a stop protrusion, with both ends of the first connecting plate located in the connecting grooves of two first fixing components respectively; the stop protrusion is connected to the first connecting plate and abuts against the connectors of the two first fixing components respectively.

[0010] By setting the stop protrusion, the displacement of the connector in the length direction of the first connecting plate can be limited, thereby improving the reliability of the connection between the connector and the connecting parts.

[0011] In at least one embodiment, the stop protrusion is an annular protrusion.

[0012] By setting the stop protrusion as an annular protrusion, the overall volume of the annular protrusion is larger, thereby improving the structural strength of the stop protrusion.

[0013] In at least one embodiment, the stop protrusion has a first contact surface that contacts the connector, the first contact surface being a curved surface protruding toward the connector.

[0014] By setting the first contact surface as a curved surface protruding towards the connector, the stop protrusion can have a resisting force towards the connector, thereby improving the connection effect and connection stability between the connector and the connector.

[0015] In at least one embodiment, the connector includes two oppositely disposed connecting blocks, with a connecting groove formed between the two connecting blocks; two stop protrusions are provided, which are respectively disposed on both sides of the thickness direction of the first connecting plate, and the stop protrusions respectively abut against one connecting block of the connector of the two first fixing components.

[0016] By cooperating with the connectors of the two stop protrusions and the two first fixing components, the contact area between the connector and the connector is increased, making the force distribution on both sides of the thickness direction of the first connecting plate uniform, thereby further improving the connection effect and connection stability between the connector and the connector.

[0017] In at least one embodiment, the first connecting plate includes a first connecting plate segment and two second connecting plate segments. The first connecting plate is connected to a limiting member, and a stop protrusion is disposed on the first connecting plate segment. The two second connecting plate segments are connected to the two ends of the first connecting plate segment in a one-to-one correspondence, and the two second connecting plate segments are connected to the connecting grooves of the two first fixing components in a one-to-one correspondence. The width of the second connecting plate segment gradually increases along the direction away from the stop protrusion, and the width of the first connecting plate segment is equal to the minimum width of the second connecting plate segment.

[0018] By varying the width of the second connecting plate segment, sufficient contact area is achieved between the first connecting plate and the inner wall of the connector near the connecting groove. Furthermore, the smaller width of the first connecting plate segment and the smaller width of the second connecting plate segment reduce the material of the first connecting plate, resulting in a lighter weight for the first connecting plate.

[0019] In at least one embodiment, the first fixing component includes a pin that passes through the connector and the connector, and a limiting member covers the pin.

[0020] By setting pins, a fixed connection between the connector and the connector is achieved. The connector and connector connected by the pins are detachable, making it easy to replace worn connectors. In addition, the limiting member is placed on the pin, which can improve the problem of the pin being easy to wobble and improve the structural stability of the pin.

[0021] In at least one embodiment, the limiting member includes: a second connecting plate and two first limiting plates, the two first limiting plates being connected to the second connecting plate and located on both sides of the width direction of the second connecting plate, the two first limiting plates and the second connecting plate forming a limiting groove, the pins of the two first fixing components being located in the limiting groove, and the two first limiting plates being located on both sides of the thickness direction of the pins.

[0022] By limiting the position of the pin in the thickness direction, the position of the pin on both sides can be restricted, thereby improving the problem of the pin easily wobbling along the thickness direction and thus improving the structural stability of the first fixing component. Furthermore, by setting the limiting groove of the limiting member as a structure surrounded by multiple connecting plates, the plate structure is relatively flat, which can make the limiting member occupy a smaller volume and use less material.

[0023] In at least one embodiment, the connecting assembly further includes a second fixing assembly located between the two first fixing assemblies. The second fixing assembly includes a first bolt and a first nut. The first bolt passes through the connector and the limiting member, and abuts against the connector. The first nut is threadedly connected to the first bolt and abuts against the limiting member.

[0024] The first bolt and the first nut enable a fixed connection between the connector and the limiting component. At the same time, the connection between the connector and the limiting component via the first bolt and the first nut is detachable, which facilitates the disassembly and assembly of the connector and the limiting component, thereby making it easier to replace the severely worn connector and / or limiting component.

[0025] On the other hand, embodiments of this application provide a support frame including multiple crossbar assemblies and multiple uprights. At least some of the crossbar assemblies include connecting components and two rod-like structures. The connecting components are the aforementioned connecting components, and the two rod-like structures are connected by the connecting components. Adjacent uprights are connected by crossbar assemblies.

[0026] The rod-shaped structure can be the original crossbar of the support frame. Two rod-shaped structures are connected by a connecting component to form the crossbar assembly of the support frame, thereby making full use of the existing crossbar specifications, improving the utilization rate of the crossbar, and reducing costs. Attached Figure Description

[0027] Figure 1 This is a schematic diagram of the overall structure of one embodiment of the support frame of this application.

[0028] Figure 2 yes Figure 1 An enlarged schematic diagram of region II of the support frame.

[0029] Figure 3 This is a structural schematic diagram of the first embodiment of the connection component of this application.

[0030] Figure 4 This is an exploded view of the first embodiment of the connecting component of this application.

[0031] Figure 5 This is a structural schematic diagram of the connector of the connection component of this application.

[0032] Figure 6 This is a top view of the connector of the connection component in this application.

[0033] Figure 7 This is a structural schematic diagram of the second embodiment of the connection component of this application.

[0034] Explanation of main component symbols

[0035] 1. Connecting assembly; 10. Connector; 11. First connecting plate; 111. First connecting plate segment; 112. Second connecting plate segment; 1120. Connecting pin hole; 1121. Clearance groove; 12. Stop protrusion; 120. First contact surface; 121. Receiving groove; 20. Limiting component; 21. Second connecting plate; 22. First limiting plate; 210. Limiting groove; 23. Third connecting plate; 231. First bending plate segment; 232. Second bending plate segment; 24. Fourth connecting plate; 30. First fixing assembly; 31. Connector head; 310. Connecting groove; 311. Connecting block; 312. Pin hole; 32. Pin piece; 33. Limiting protrusion; 40. Second fixing assembly; 41. First bolt; 42. First nut; 2. Crossbar assembly; 200. Rod-shaped structure; 3. Upright. Detailed Implementation

[0036] The technical solutions of the embodiments of this application will be described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, and not all embodiments.

[0037] In related technologies, the support frame includes multiple uprights and multiple crossbars. With the continuous improvement of the support frame, the distance between two adjacent uprights increases, resulting in the length of the existing crossbars being insufficient to connect the two adjacent uprights, thus causing the following problems: (1) Increasing the length of the crossbars to the new specifications requires a large investment, and it will also cause the existing crossbars to be unable to continue to be used, resulting in waste; (2) If a single connector is used to connect the two crossbars directly, it is difficult to meet the support strength requirements of the building design of the support frame, resulting in insufficient stability of the support frame.

[0038] One embodiment of this application provides a connecting assembly for connecting two rod-shaped structures. The connecting assembly includes a connector, a limiting member, and two first fixing members. The limiting member is fixedly connected to the connector. Both ends of the connector are respectively fixedly connected to the two rod-shaped structures one-to-one via the two first fixing members. The limiting member is connected to each of the two first fixing members and is spaced apart from the connector. This connecting assembly can be applied to the crossbars of a support frame. The rod-shaped structures can be existing crossbars of the support frame. Two rod-shaped structures are connected together via the connector, limiting member, and two first fixing members. Both ends of the connector are connected to one rod-shaped structure via a first fixing member, and the limiting member is connected to both the connector and the first fixing members, thus fixing the connector, limiting member, and first fixing members relatively. The connector, limiting member, and first fixing members can share the pressure, improving the structural stability between the connector and the limiting member. This allows the two rod-shaped structures connected by the connecting assembly to meet the building design requirements for support strength, thereby fully utilizing existing crossbars, increasing the utilization rate of the crossbars, and reducing costs.

[0039] The following detailed description of some embodiments of this application is provided in conjunction with the accompanying drawings. Unless otherwise specified, the embodiments and features described below can be combined with each other.

[0040] Please see Figure 1 One embodiment of this application provides a support frame, which includes a plurality of crossbar assemblies 2 and a plurality of uprights 3. Adjacent uprights 3 are connected by crossbar assemblies 2. At least a portion of the crossbar assemblies 2 include a connecting assembly 1 and two rod-shaped structures 200, which are connected by the connecting assembly 1.

[0041] The rod-shaped structure 200 can be a crossbar of the original specifications of the support frame. Two rod-shaped structures 200 are connected by the connecting component 1 to form the crossbar assembly 2 of the support frame, thereby making full use of the existing crossbar specifications, improving the utilization rate of the crossbar, and reducing costs.

[0042] Specifically, in related technologies, existing crossbar specifications include crossbars with dimensions of 300mm, 600mm, 900mm, and 1200mm. Among these specifications, "300mm, 600mm, 900mm, and 1200mm" refers to the crossbar applicable to two adjacent uprights with a spacing of "300mm, 600mm, 900mm, and 1200mm", rather than the net length of the crossbar. The spacing between two adjacent uprights refers to the distance between the central axes of the two adjacent uprights.

[0043] When the distance between two adjacent uprights is 1800mm, two existing 900mm crossbars can be used. The two 900mm crossbars are connected by connecting component 1 to form crossbar assembly 2, and the two uprights are connected by crossbar assembly 2.

[0044] Please see Figure 2 In some embodiments, the connecting component 1 includes a connector 10, a limiting member 20, and two first fixing components 30. The limiting member 20 is fixedly connected to the connector 10. The two ends of the connector 10 are respectively fixedly connected to the two rod-shaped structures 200 one-to-one through the two first fixing components 30. The limiting member 20 is connected to both first fixing components 30.

[0045] Two rod-shaped structures 200 are connected together by a connector 10, a limiting member 20, and two first fixing components 30. Each end of the connector 10 is connected to a rod-shaped structure 200 through a first fixing component 30, and the limiting member 20 is connected to the connector 10 and the two first fixing components 30 respectively, so that the connector 10, the limiting member 20, and the first fixing components 30 are relatively fixed. The connector 10, the limiting member 20, and the first fixing components 30 can share the pressure, improve the structural stability between the connector 10 and the limiting member 20, so that the two rod-shaped structures 200 connected by the above-mentioned connecting component 1 can meet the building design requirements for support strength, thereby making full use of existing crossbar specifications, improving the utilization rate of crossbars, and reducing costs.

[0046] In some embodiments, the connecting component 1 includes a connecting rod (not shown), with its two ends fixedly connected to the connecting member 10 and the limiting member 20, respectively, and the connecting rod located between two first fixing components 30; wherein the connecting rod is welded to the connecting member 10 and the limiting member 20 to form an integral structure.

[0047] Please see Figure 2 and Figure 3 In some embodiments, the connecting component 1 further includes a second fixing component 40, which is located between the two first fixing components 30, and the connecting member 10 and the limiting member 20 are fixedly connected through the second fixing component 40.

[0048] Please see Figure 2 and Figure 3 In some embodiments, the second fixing component 40 includes a first bolt 41 and a first nut 42. The first bolt 41 passes through the connector 10 and the limiting member 20 and abuts against the connector 10. The first nut 42 is threadedly connected to the first bolt 41 and abuts against the limiting member 20.

[0049] The first bolt 41 and the first nut 42 are used to fix the connection between the connector 10 and the limiting member 20. At the same time, the connection between the connector 10 and the limiting member 20 through the first bolt 41 and the first nut 42 is detachable, so as to facilitate the disassembly and assembly of the connector 10 and the limiting member 20, thereby facilitating the replacement of the severely worn connector 10 and / or limiting member 20.

[0050] Specifically, the first bolt 41 has a nut, and the nut of the first bolt 41 abuts against the connector 10.

[0051] In some embodiments, the first fixing component 30 includes a connector 31 for fixed connection with the rod-shaped structure 200, and the connector 31 has a connecting groove 310. The two ends of the connector 10 are respectively disposed in the connecting grooves 310 of the connectors 31 of the two first fixing components 30, and the two ends of the connector 10 are respectively connected to the connectors 31 of the two first fixing components 30, so that the connecting grooves 310 of the two first fixing components 30 can limit the two sides of the connector 10 in the thickness direction, thereby improving the connection stability between the connectors 31 of the first fixing component 30 and the connector 10. Since the connector 31 is fixedly connected to the rod-shaped structure 200, the connection stability between the rod-shaped structure 200 and the connector 10 is further improved.

[0052] In some embodiments, the connector 31 and the rod-like structure 200 form an integral structure. Specifically, the connector 31 and the rod-like structure 200 are welded together as an integral structure.

[0053] Please see Figure 3 and Figure 4 In some embodiments, the connector 10 includes a first connecting plate 11 and a stop protrusion 12. The two ends of the first connecting plate 11 are connected to two rod-shaped structures 200 through a first fixing component 30. The stop protrusion 12 is connected to the first connecting plate 11 and abuts against the connectors 31 of the two first fixing components 30 respectively.

[0054] By setting the stop protrusion 12, the displacement of the connector 31 in the length direction of the first connecting plate 11 can be limited, thereby improving the stability of the connection between the connector 31 and the connector 10.

[0055] In some embodiments, the stop protrusion 12 includes two protrusion segments, which are spaced apart and arranged opposite to each other, and the two protrusion segments abut against the connectors 31 of the two first fixing components 30 in a one-to-one correspondence.

[0056] In some embodiments, the stop protrusion 12 is an annular protrusion. By setting the stop protrusion 12 as an annular protrusion, the overall volume of the annular protrusion is larger than that of two separate protrusion segments, thereby improving the structural strength of the stop protrusion 12.

[0057] Please see Figure 3 and Figure 5 In some embodiments, the stop protrusion 12 has a first contact surface 120 that contacts the connector 31, and the first contact surface 120 is a curved surface that protrudes toward the connector 31.

[0058] If the first contact surface 120 of the stop protrusion 12 is set as a plane or a concave surface, there will be a large gap between the first contact surface 120 and the connector 31, which will affect the connection effect between the connector 10 and the connector 31, making the connector 10 prone to displacement in the length direction of the first connecting plate 11. By setting the first contact surface 120 as a surface protruding towards the connector 31, the stop protrusion 12 can have a resisting force towards the connector 31, thereby improving the connection effect and connection stability between the connector 10 and the connector 31.

[0059] In some embodiments, the first contact surface 120 is an arc-shaped surface.

[0060] In some embodiments, the stop protrusion 12 and the first connecting plate 11 are an integral structure. In this way, the stop protrusion 12 and the first connecting plate 11 are integrated into one unit, eliminating the need for additional parts to stop the connector 31 and simplifying the structure of the connecting assembly 1.

[0061] In one embodiment, the stop protrusion 12 and the first connecting plate 11 are welded together as a single structure.

[0062] In another embodiment, the stop protrusion 12 and the first connecting plate 11 are formed into an integral structure through processes such as cutting and stamping.

[0063] Please see Figure 3 and Figure 4 In some embodiments, each connector 31 includes two connecting blocks 311, and a connecting groove 310 is formed between the two connecting blocks 311; wherein: two stop protrusions 12 are provided, and the two stop protrusions 12 are respectively provided on both sides of the thickness direction of the first connecting plate 11, and the stop protrusions 12 respectively abut against one connecting block 311 of the connector 31 of the two first fixing components 30.

[0064] By cooperating with the connectors 31 of the two stop protrusions 12 and the two first fixing components 30, the contact area between the connector 10 and the connector 31 is increased, so that the force distribution on both sides of the thickness direction of the first connecting plate 11 is uniform, thereby further improving the connection effect and connection stability between the connector 10 and the connector 31.

[0065] In some embodiments, both stop protrusions 12 are annular protrusions.

[0066] In some embodiments, both stop protrusions 12 are integral with the first connecting plate 11.

[0067] In some embodiments, in each crossbar assembly 2, each rod structure 200 is provided with a connector 31 at both ends. One end of the connector 31 of a rod structure 200 abuts against the upright 3, and the other end of the connector 31 of a rod structure 200 abuts against the stop protrusion 12 of the connector 10. This arrangement restricts the position at both ends of each rod structure 200, thereby improving the structural stability between the crossbar assembly 2 and the two uprights 3.

[0068] Please see Figure 5 and Figure 6 In some embodiments, the first connecting plate 11 includes a first connecting plate segment 111 and two second connecting plate segments 112. The first connecting plate segment 111 is connected to the limiting member 20, and the stop protrusion 12 is disposed on the first connecting plate segment 111. The two second connecting plate segments 112 are connected to the two ends of the first connecting plate segment 111 in a one-to-one correspondence, and the two second connecting plate segments 112 are connected to the connecting grooves 310 of the two first fixing components 30 in a one-to-one correspondence. In this case, along the direction away from the stop protrusion 12, the width of the second connecting plate segment 112 gradually increases, and the width of the first connecting plate segment 111 is equal to the minimum width of the second connecting plate segment 112.

[0069] By varying the width of the second connecting plate segment 112, sufficient contact area is achieved between the first connecting plate 11 and the inner wall of the connector 31 near the connecting groove 310. Furthermore, since the width of the first connecting plate segment 111 of the first connecting plate 11 is smaller, and the width of a portion of the second connecting plate segment 112 is also smaller, the material of the first connecting plate 11 is reduced, making the first connecting plate 11 lighter.

[0070] Alternatively, the first connecting plate 11 can be other shapes such as a disc or a rectangular structure.

[0071] Specifically, the first connecting plate segment 111 is connected to the limiting member 20 via the second fixing component 40.

[0072] In some embodiments, the first connecting plate segment 111 and the second connecting plate segment 112 are an integral structure.

[0073] In some embodiments, the first connecting plate segment 111 and the two second connecting plate segments 112 of the first connecting plate 11 are cut from a single plate structure so that the first connecting plate segment 111 and the second connecting plate segment 112 form an integral structure. The waste material cut off can be recycled.

[0074] Please see Figure 3 and Figure 4In some embodiments, the limiting member 20 has a limiting groove 210, and portions of the two first fixing components 30 are located within the limiting groove 210. The limiting effect of the limiting groove 210 of the limiting member 20 improves the structural stability of the first fixing components 30. Furthermore, since the two first fixing components 30 are fixedly connected to the rod-shaped structure 200, the structural stability of the first fixing components 30 is improved, and the connection stability between the two rod-shaped structures 200 is also improved.

[0075] Please see Figure 3 and Figure 4 In some embodiments, each first fixing component 30 includes a pin 32, which passes through the connector 31 and the connector 10, and a limiting member 20 covers the pin 32. By providing the pin 32, a fixed connection between the connector 31 and the connector 10 is achieved, and the connector 31 and the connector 10 connected by the pin 32 are detachable to facilitate the replacement of worn connector 10. Moreover, the limiting member 20 covering the pin 32 can improve the problem of the pin 32 being prone to shaking and enhance the structural stability of the pin 32.

[0076] In some embodiments, the width direction of the pin 32 extends along the distribution direction of the two rod-shaped structures 200.

[0077] Specifically, the length direction of the connecting rod (not shown) welded to the connector 10 and the limiting member 20 is the insertion direction of the pin 32.

[0078] In some embodiments, the limiting member 20 includes a second connecting plate 21 and two first limiting plates 22. The two first limiting plates 22 are respectively connected to the second connecting plate 21 and located on both sides of the second connecting plate 21 in the width direction. The two first limiting plates 22 and the second connecting plate 21 form a limiting groove 210. The pins 32 of the two first fixing components 30 are all located in the limiting groove 210. The two first limiting plates 22 are located on both sides of the pins 32 in the thickness direction.

[0079] By limiting the position of the pin 32 in the thickness direction through the limiting groove 210, the position of the pin 32 on both sides can be restricted, thereby improving the problem that the pin 32 is prone to wobbling along the thickness direction of the pin 32 and thus improving the structural stability of the first fixing component 30. Furthermore, by setting the limiting groove 210 of the limiting member 20 as a structure surrounded by multiple connecting plates, the plate structure is relatively flat, which can make the limiting member 20 occupy a smaller volume and use less material.

[0080] Specifically, the two side walls of the pin 32 in the thickness direction are clearance-fitted with the first limiting plate 22.

[0081] Please see Figure 5 and Figure 7In some embodiments, the stop protrusion 12 is an annular protrusion, which together with the first connecting plate 11 forms a receiving groove 121. The limiting member 20 includes a third connecting plate 23 and two fourth connecting plates 24. The two fourth connecting plates 24 are respectively connected to both ends of the third connecting plate 23. Both fourth connecting plates are bent and arranged with respect to the third connecting plate 23. The third connecting plate 23 is located in the receiving groove 121. The third connecting plate 23 is connected to the connector 10 through the first bolt 41 and the first nut 42 of the second fixing component 40. The two fourth connecting plates 24 are respectively connected to the pins 32 of the two first fixing components 30 to improve the structural stability of the pins 32.

[0082] Please see Figure 7 In some embodiments, the third connecting plate 23 includes a first bent plate segment 231 and two second bent plate segments 232. The two second bent plate segments 232 are respectively connected to the two ends of the first bent plate segment 231 in the length direction and are set at an included angle, forming a "U-shaped structure" between the first bent plate segment 231 and the two second bent plate segments 232.

[0083] Specifically, the two fourth connecting plates 24 are pressed onto the pin 32.

[0084] Specifically, the stop protrusion 12, in conjunction with the pin 32, makes the connection between the two rod-shaped structures 200 more stable.

[0085] In some embodiments, both fourth connecting plates have limiting grooves 210.

[0086] In some embodiments, the pin 32 is provided with two limiting protrusions 33. The two limiting protrusions 33 are provided on both sides of the pin 32 in the thickness direction and are located at the end of the pin 32 away from the limiting member 20. The two limiting protrusions 33 are in limiting cooperation with the connector 31.

[0087] By setting the limiting protrusion 33, the displacement of the pin 32 along its length direction can be restricted, thereby improving the reliability of the connection between the pin 32 and the connector 31; and it can also make the connector 31 and the pin 32 less likely to separate, reducing the chance of the pin 32 being lost.

[0088] In some embodiments, the connecting assembly 1 includes a limiting and fixing member that passes through the pin 32, with both ends of the limiting and fixing member protruding from both sides of the pin 32 in the thickness direction to form limiting protrusions 33 on both sides of the pin 32 in the thickness direction. The limiting protrusions 33 formed by the limiting and fixing member facilitate the installation and removal of the limiting protrusions 33, thereby facilitating the installation and removal of the pin 32 and the connector 31.

[0089] In some embodiments, the limiting fastener includes a second bolt and a second nut, the second nut being threaded to one end of the second bolt, and the second bolt itself having a nut, such that the nut and the second nut of the limiting bolt respectively form two limiting protrusions 33 first nuts.

[0090] In some embodiments, the two limiting protrusions 33 are respectively welded to the two side surfaces of the pin 32 in the thickness direction.

[0091] In some embodiments, each connector 31 has two connecting blocks 311 with pin holes 312, and a pin 32 passes through the pin holes 312 of the two connecting blocks 311 of a connector 31. After the pin 32 passes through the pin holes 312, a limiting protrusion 33 is then machined.

[0092] In some embodiments, in each connector 31, the pin holes 312 of the two connecting blocks 311 are of the same size, and the limiting protrusion 33 engages with the outer surface of the connecting block 311 located at the insertion end of the pin 32. The outer surface of the connecting block 311 refers to the surface of the connecting block 311 away from the connecting groove 310. This configuration limits the displacement of the pin 32 along its length, thereby improving the reliability of the connection between the pin 32 and the connector 31.

[0093] In some embodiments, in each connector 31, the pin hole 312 of each connecting block 311 is a rectangular hole. The pin holes 312 of the two connecting blocks 311 are divided into a first pin hole and a second pin hole. The length of the first pin hole is less than the length of the second pin hole. The limiting protrusion 33 is limited and engaged with the inner surface of the connecting block 311 where the first pin hole is located. This arrangement facilitates the disassembly and assembly of the connector 10 and the connector 31, so as to facilitate the replacement of the worn connector 10.

[0094] The inner surface of the connecting block 311 refers to the surface of the connecting block 311 near the connecting groove 310.

[0095] Please see Figure 5 and Figure 6 In some embodiments, the first connecting plate 11 is provided with two connecting pin holes 1120. Each connecting pin hole 1120 has a relief groove 1121 on both sides in the width direction. The size and shape of the connecting pin hole 1120 are the same as those of the first pin hole. The relief groove 1121 is used to avoid the limiting protrusion 33, so as to facilitate the disassembly and assembly between the connector 10 and the connector 31, and to facilitate the replacement of the worn connector 10.

[0096] Furthermore, those skilled in the art should recognize that the above embodiments are merely illustrative of this application and are not intended to limit this application. Any appropriate changes and variations made to the above embodiments within the essential spirit and scope of this application fall within the scope of this application's disclosure.

Claims

1. A connection assembly for connecting two rod-like structures, characterized in that The connecting assembly comprises: a connecting piece; a limiting piece fixedly connected with the connecting piece; two first fixing assemblies, two ends of the connecting piece are fixedly connected with the two rod-shaped structures one by one through the two first fixing assemblies, and the limiting piece is connected with the two first fixing assemblies and is arranged in a spaced manner with the connecting piece.

2. The connection assembly of claim 1, wherein, The first fixing assembly comprises a connecting head for fixedly connecting with the rod-shaped structure, and the connecting head has a connecting groove; two ends of the connecting piece are arranged in the connecting groove of the connecting head of the two first fixing assemblies, and two ends of the connecting piece are connected with the connecting head of the two first fixing assemblies.

3. The connection assembly of claim 2, wherein, The connecting piece comprises: a first connecting plate, two ends of the first connecting plate are arranged in the connecting groove of the two first fixing assemblies; a stop protrusion connected with the first connecting plate, the stop protrusion abuts against the connecting head of the two first fixing assemblies.

4. The connection assembly of claim 3, wherein, The stop protrusion is an annular protrusion; and / or The stop protrusion has a first contact surface in contact with the connecting head, and the first contact surface is a curved surface protruding towards the connecting head.

5. The connection assembly of claim 3, wherein, The connecting head comprises two oppositely arranged connecting blocks, and the connecting groove is formed between the two connecting blocks; The stop protrusion is provided with two, and the two stop protrusions are arranged on both sides of the thickness direction of the first connecting plate, and the stop protrusions abut against one connecting block of the connecting head of the two first fixing assemblies.

6. The connection assembly of claim 3, wherein, The first connecting plate comprises: a first connecting plate segment connected with the limiting piece, and the stop protrusion is arranged on the first connecting plate segment; two second connecting plate segments connected with two ends of the first connecting plate segment one by one, and the two second connecting plate segments are connected with the connecting groove of the two first fixing assemblies one by one; wherein, in the direction away from the stop protrusion, the width of the second connecting plate segment gradually increases, and the width of the first connecting plate segment is equal to the minimum width of the second connecting plate segment.

7. The connection assembly of claim 2, wherein, The first fixing assembly comprises a pin piece, the pin piece is arranged through the connecting head and the connecting piece, and the limiting piece is arranged on the pin piece.

8. The connection assembly of claim 7, wherein, The limiting piece comprises: a second connecting plate; two first limiting plates connected with the second connecting plate and located on both sides of the width direction of the second connecting plate, the two first limiting plates and the second connecting plate surround a limiting groove, the pin pieces of the two first fixing assemblies are located in the limiting groove, and the two first limiting plates are located on both sides of the thickness direction of the pin piece.

9. The connection assembly of any one of claims 1 to 8, wherein, The connecting assembly further comprises: a second fixing assembly located between the two first fixing assemblies, the second fixing assembly comprises a first bolt and a first nut, the first bolt is arranged through the connecting piece and the limiting piece, the first bolt abuts against the connecting piece, and the first nut is threadedly connected with the first bolt and abuts against the limiting piece.

10. A support frame, characterized by, Comprise: a plurality of crossbar assemblies, at least some of the crossbar assemblies comprising two bar-like structures and a connecting assembly, the connecting assembly being a connecting assembly according to any one of claims 1 to 9, the two bar-like structures being connected by the connecting assembly; a plurality of uprights, two adjacent uprights being connected by one of the crossbar assemblies.

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