A connection structure

Abstract

The application provides a connecting structure, comprising: a first fixing assembly, the first fixing assembly comprising a first fixing component for connecting with a connecting pipeline; a second fixing assembly, the second fixing assembly being movably arranged opposite to the first fixing assembly, the second fixing assembly comprising a second fixing component for contacting with the connecting pipeline; a third fixing assembly, the third fixing assembly being movably connected with the second fixing assembly; a connecting assembly, the connecting assembly comprising a first connecting head connected with the first fixing component and a second connecting head connected with the third fixing assembly; when the connecting structure is in a connecting state, the first fixing component and the second fixing component are both in abutment with the connecting pipeline to fix the connecting pipeline; the distance between the third fixing assembly and the first fixing component is adjustably arranged to connect or disconnect the second connecting head with the first connecting head through the third fixing assembly. The connecting structure solves the technical problem of excessive workload when the pipeline is quickly docked.

Description

Technical Field

[0001] This invention relates to the field of pipeline connection technology, and more specifically to a connection structure. Background Technology

[0002] During the manufacturing process of a condenser, refrigerant needs to be introduced into the condenser to provide power. Since the refrigerant injection lines are typically under considerable pressure, quick-connect couplings are generally used in existing production processes to connect the refrigerant injection lines to the condenser lines in order to facilitate refrigerant injection or extraction.

[0003] However, the existing method of refrigerant injection involves manually inserting and removing quick-connect couplings to inject refrigerant into the condenser. This method requires a significant amount of physical activity from workers and consumes a large amount of manpower.

[0004] Therefore, existing technologies need further development. Summary of the Invention

[0005] The purpose of this invention is to overcome the above-mentioned technical deficiencies and provide a connection structure to solve the technical problem of excessive workload when realizing rapid pipeline connection in related technologies.

[0006] To achieve the above-mentioned technical objectives, the present invention adopts the following technical solution: providing a connection structure, comprising:

[0007] The first fixing component includes a first fixing part for connection with the connecting conduit;

[0008] The second fixing component is movably disposed relative to the first fixing component, and the second fixing component includes a second fixing part for contacting the connecting pipe;

[0009] The third fixing component is movably connected to the second fixing component;

[0010] A connecting assembly, comprising a first connector connected to a first fixing component and a second connector connected to a third fixing component;

[0011] The connecting structure has a connected state. When the connecting structure is in the connected state, both the first fixing component and the second fixing component abut against the connecting pipe to fix the connecting pipe. The distance between the third fixing component and the first fixing component can be adjusted so that the second connector can be connected to or disconnected from the first connector through the third fixing component.

[0012] Furthermore, the first fixing component is provided with a connecting groove for inserting a connecting pipe, and the second fixing component is provided with a fixing part; when the connecting structure is in the connected state, the fixing part abuts against the connecting pipe located in the connecting groove, so as to clamp the connecting pipe between the fixing part and the first fixing component.

[0013] Furthermore, the first fixing component is provided with a receiving groove, which is connected to the connecting groove. The bottom of the receiving groove is located on the side of the first connector away from the second connector. When the connecting structure is in the connected state, the bottom of the receiving groove abuts against the first connector, thereby restricting the position of the first connector.

[0014] Furthermore, the second fixing component is provided with an abutment groove; when the connecting structure is in the connected state, the inner wall surface of the abutment groove abuts against the first connector.

[0015] Furthermore, the first fixing component includes a mounting plate, and the first fixing member is connected to the mounting plate; the connecting groove is located on the side of the first fixing member away from the mounting plate, and the connecting groove communicates with the outside of the first fixing member.

[0016] Furthermore, a limiting part is provided on the second fixing component, and the limiting part protrudes from the outer surface of the second fixing component; the second fixing component is movably disposed along the first preset direction so that the connecting structure reaches the connecting state; when the connecting structure reaches the connecting state, the third fixing component moves along the second preset direction, and the limiting part abuts against the first fixing component to restrict the movement of the second fixing component along the second preset direction.

[0017] Furthermore, the first preset direction and the second preset direction are set perpendicular to each other; and / or, there are two limiting parts, which are located on opposite sides of the first connector.

[0018] Furthermore, the second fixing component includes a connecting plate located on the side of the second fixing component away from the third fixing component. A guide component is provided on the connecting plate, which passes through the second fixing component and connects to the third fixing component. An elastic element is sleeved on the guide component, with one end of the elastic element connected to the second fixing component and the other end of the elastic element being connectably connected to the third fixing component.

[0019] Furthermore, the connecting component is a quick connector; the second connector includes a connecting sleeve for connecting to the first connector and a control ring fitted on the connecting sleeve; the third fixing component includes a driving component connected to the control ring, the driving component being movably arranged to drive the control ring to move, thereby controlling the connection or separation of the connecting sleeve from the first connector.

[0020] Furthermore, the driving component is a cylinder, and the connection structure also includes a first connecting component and a second connecting component that are connected to each other; the first connecting component is rotatably connected to the third fixed component, and the first connecting component is connected to the control ring; the second connecting component is connected to the piston rod of the cylinder so as to drive the control ring to move through the cylinder.

[0021] Furthermore, the first connecting component includes a first connecting plate and a second connecting plate spaced apart from each other, the first connecting plate and the second connecting plate being hinged to the third fixing component respectively; a control ring is located between the first connecting plate and the second connecting plate, the first connecting plate and the second connecting plate being connected to the control ring respectively; the first connecting component also includes a third connecting plate, one end of the third connecting plate being connected to the first connecting plate, the other end of the third connecting plate being connected to the second connecting plate, and the third connecting plate being connected to the piston rod of the driving component.

[0022] Furthermore, both the first connecting plate and the second connecting plate are provided with limit grooves, and the control ring is provided with limit holes. The limit grooves and limit holes are provided correspondingly. The limit grooves are elongated, and the connecting structure also includes a limit member. The limit member passes through the limit groove and is connected to the limit hole. The limit member is movably set within the limit groove.

[0023] Furthermore, in any of the above connection structures, the third fixing component includes a fixing plate, a fixing block is provided on the fixing plate, the second connector is inserted into the fixing block, and a communication port is provided on the fixing plate for communicating with the pipeline in the second connector.

[0024] Beneficial effects:

[0025] 1. The connection structure of this invention enables rapid positioning of pipes and quick-connect male pipe fittings.

[0026] 2. By adopting the connection structure of the present invention, the first connector and the second connector of the connecting pipeline can be quickly connected and self-locking can be achieved. Attached Figure Description

[0027] Figure 1 This is a schematic diagram of the connection structure used in an embodiment of the present invention;

[0028] Figure 2 This is a schematic diagram of the structure of the first fixing component of the connection structure used in an embodiment of the present invention;

[0029] Figure 3 This is the method used in the embodiments of the present invention. Figure 2 An enlarged schematic diagram of part A in the middle;

[0030] Figure 4 This is a schematic diagram of the structure of the second fixing component of the connection structure used in an embodiment of the present invention;

[0031] Figure 5 This is a schematic diagram of the structure of the second fixing component and the third fixing component of the connection structure provided in the embodiment of the present invention;

[0032] Figure 6 This is a schematic diagram of the third fixing component of the connection structure used in an embodiment of the present invention;

[0033] Figure 7 This is a schematic diagram of the connection structure provided in the embodiment of the present invention in a connected state.

[0034] The above figures include the following reference numerals:

[0035] 1. First fixing assembly; 11. First fixing component; 111. Connecting groove; 112. Receiving groove; 12. Mounting plate; 2. Second fixing assembly; 21. Second fixing component; 211. Fixing part; 212. Abutting groove; 22. Limiting part; 23. Connecting plate; 231. Guide component; 232. Elastic element; 3. Third fixing assembly; 31. Driving component; 32. Fixing plate; 321. Fixing block; 4. Connecting assembly; 41. First connector; 42. Second connector; 421. Connecting sleeve; 422. Control ring; 5. Connecting pipeline; 6. First connecting component; 61. First connecting plate; 62. Second connecting plate; 63. Third connecting plate; 64. Limiting groove; 65. Limiting hole; 7. Second connecting component. Detailed Implementation

[0036] To enable those skilled in the art to better understand the present application, the technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present application, and not all embodiments. Based on the embodiments in the present application, all other embodiments obtained by those of ordinary skill in the art without creative effort should fall within the scope of protection of the present application.

[0037] According to an embodiment of the present invention, a connection structure is provided; please refer to [link / reference]. Figures 1 to 7The system includes: a first fixing component 1, which includes a first fixing part 11 for connecting to the connecting pipe 5; a second fixing component 2, which is movably disposed relative to the first fixing component 1 and includes a second fixing part 21 for contacting the connecting pipe 5; a third fixing component 3, which is movably connected relative to the second fixing component 2; and a connecting component 4, which includes a first connector 41 connected to the first fixing part 11 and a second connector 42 connected to the third fixing component 3. The connecting structure has a connected state; when the connecting structure is in the connected state, both the first fixing part 11 and the second fixing part 21 abut against the connecting pipe 5 to fix the connecting pipe 5. The distance between the third fixing component 3 and the first fixing part 11 is adjustable so that the second connector 42 can be connected to or disconnected from the first connector 41 via the third fixing component 3.

[0038] Specifically, the first fixing component 11 in this embodiment is made of polyethylene.

[0039] With the above configuration, when two pipes need to be connected, one pipe is first fixedly connected to the first fixing component 11 of the first fixing assembly 1, and the other pipe is fixedly connected to the second fixing component 21 of the second fixing assembly 2. The connecting assembly 4 includes a first connector 41 connected to the first fixing component 11 and a second connector 42 connected to the third fixing assembly 3. The connecting assembly 4 and the connecting pipe 5 are first fixed by the first fixing component 11 and the second fixing component 21, and then the interfaces of the two pipes are respectively fixed to the first connector 41 and the second connector 42. By adjusting the distance between the third fixing assembly 3 and the first fixing component 11, the first connector 41 and the second connector 42 of the two pipes can be quickly connected, saving time and effort and reducing the amount of movement for workers. The connection structure of the present invention solves the technical problem of excessive workload when achieving rapid connection of pipes in related technologies.

[0040] See Figures 2 to 4 In the connection structure of this embodiment, the first fixing component 11 is provided with a connecting groove 111 for inserting the connecting pipe 5, and the second fixing component 21 is provided with a fixing part 211. When the connection structure is in the connected state, the fixing part 211 abuts against the connecting pipe 5 located in the connecting groove 111, so as to clamp the connecting pipe 5 between the fixing part 211 and the first fixing component 11. In this way, the connecting pipe 5 is inserted into the connecting groove 111 of the first fixing component 11, and then the fixing part 211 of the second fixing component 21 moves to the first fixing component 11 and abuts against it. Due to the connecting groove 111, the contact surfaces of the connecting pipe 5 with the first fixing component 1 and the second fixing component 2 are all clamped between the fixing part 211 and the first fixing component 11, so that the connecting pipe 5 is more stably and firmly embedded in the connecting groove 111.

[0041] See Figure 3 In the connection structure of this embodiment, the first fixing component 11 is provided with a receiving groove 112, which communicates with the connecting groove 111. The bottom of the receiving groove 112 is located on the side of the first connector 41 away from the second connector 42. When the connection structure is in the connected state, the bottom of the receiving groove 112 abuts against the first connector 41, thereby restricting the position of the first connector 41. The receiving groove 112 provides sufficient connection space for the first connector 41 and the second connector 42, and also prevents the connecting pipe 5 from moving within the connecting groove 111, thus playing a good role in fastening and limiting.

[0042] See Figure 4 In the connection structure of this embodiment, the second fixing component 21 is provided with an abutment groove 212. When the connection structure is in the connected state, the inner wall surface of the abutment groove 212 abuts against the first connector 41. When the first connector 41 and the second connector 42 are in the connected state, the first connector 41 abuts against the inner wall surface of the abutment groove 212. This arrangement allows the first connector 41 to be locked in the abutment groove 212, preventing the first connector 41 from sliding along the linear bearing direction of the connection between the two pipelines, thereby improving the robustness of the connection structure.

[0043] See Figure 1 In the connection structure of this embodiment, the first fixing component 1 includes a mounting plate 12, and the first fixing member 11 is connected to the mounting plate 12. The connecting groove 111 is located on the side of the first fixing member 11 away from the mounting plate 12, and the connecting groove 111 communicates with the outside of the first fixing member 11. One side of the first fixing component 1 is provided with the connecting groove 111 to fix the connecting pipe 5, and the other side is connected to the mounting plate 12. The mounting plate has a porous structure around its perimeter, and the fixing member passes through the holes to fix the mounting plate 12 to the wall or other panel structure. This arrangement indirectly increases the contact area between the first fixing component 1 and the wall or other panel structure, making the first fixing component 1 more stable and firm. The connecting groove 111 communicates with the outside of the first fixing member 11, which facilitates the embedding of pipes and simplifies the operation process.

[0044] See Figure 4In the connection structure of this embodiment, a limiting part 22 is provided on the second fixing component 21, and the limiting part 22 protrudes from the outer surface of the second fixing component 21. The second fixing component 2 is movably disposed along a first preset direction to enable the connection structure to reach a connected state. When the connection structure reaches the connected state, the third fixing component 3 moves along the second preset direction, and the limiting part 22 abuts against the first fixing component 11 to restrict the movement of the second fixing component 21 along the second preset direction. When it is necessary to connect two pipelines, the second fixing component 2 moves along the first preset direction closer to the first fixing component 1, and the third fixing component 3 moves along the second preset direction to achieve the docking of the first connector 41 and the second connector 42. The protruding limiting part 22 is provided on the outer surface of the second fixing component 21. When the connection structure is connected, the limiting part 22 abuts against the first fixing component 11, restricting the movement of the second fixing component 21 along the second preset direction, thereby ensuring the docking of the first connector 41 and the second connector 42.

[0045] In some embodiments of the connection structure, the first preset direction and the second preset direction are set perpendicular to each other. The second fixing component 2 moves horizontally closer to the first fixing component 1, bringing the connectors of the two pipes closer together, and then the third fixing component 3 moves vertically to connect the connectors of the two pipes.

[0046] In some embodiments of the connection structure, there are two limiting parts 22, which are located on opposite sides of the first connector 41.

[0047] In some embodiments of the connection structure, the two limiting parts 22 are symmetrically arranged, and the symmetrical structure improves the stability of the connection structure.

[0048] See Figure 1 In the connection structure of this embodiment, the second fixing component 2 includes a connecting plate 23, which is located on the side of the second fixing component 21 away from the third fixing component 3. A guide component 231 is provided on the connecting plate 23, passing through the second fixing component 21 and connecting to the third fixing component 3. An elastic element 232 is sleeved on the guide component 231, with one end connected to the second fixing component 21 and the other end connectably connected to the third fixing component 3. This arrangement, with the guide component 231 passing through the second fixing component 21 and the elastic element 232 sleeved on it, and one end connected to the second fixing component 21 and the other end connected to the third fixing component 3, better connects each component of the second fixing component 2 and the third fixing component 3, providing flexible operation and improving the sensitivity of the connection structure.

[0049] See Figure 1 and Figure 5In the connection structure of this embodiment, the connecting component 4 is a quick connector; the second connector 42 includes a connecting sleeve 421 for connecting to the first connector 41 and a control ring 422 fitted on the connecting sleeve 421; the third fixing component 3 includes a driving component 31 connected to the control ring 422. The driving component 31 is movably arranged to drive the control ring 422 to move, thereby controlling the connection or separation of the connecting sleeve 421 from the first connector 41. The control ring 422 is fitted on the connecting sleeve 421, and the driving component 31 drives the control ring 422 to move, causing the connecting sleeve 421 to move, thereby achieving connection or separation from the first connector 41. In this way, the driving component 31 drives the control ring 422 to move, replacing manual operation, greatly reducing the amount of manual movement, saving time and effort, and improving productivity.

[0050] See Figure 1 and Figure 5 In the connection structure of this embodiment, the driving component 31 is a cylinder, and the connection structure also includes a first connecting component 6 and a second connecting component 7 connected to each other; the first connecting component 6 is rotatably connected to the third fixing component 3, and the first connecting component 6 is connected to the control ring 422; the second connecting component 7 is connected to the piston rod of the cylinder, so as to drive the control ring 422 to move through the cylinder. In the connection structure of the present invention, the first connecting component 6 is rotatably connected to the third fixing component 3, and the first connecting component 6 is also connected to the control ring 422; the second connecting component 7 is connected to the piston rod of the cylinder, and the cylinder drives the control ring 422 to move. By using the cylinder, each component is driven to make corresponding movements, improving the flexibility of the connection process.

[0051] See Figure 6 In the connection structure of this embodiment, the first connecting component 6 includes a first connecting plate 61 and a second connecting plate 62 arranged at intervals. The first connecting plate 61 and the second connecting plate 62 are respectively hinged to the third fixing component 3. The control ring 422 is located between the first connecting plate 61 and the second connecting plate 62, and the first connecting plate 61 and the second connecting plate 62 are respectively connected to the control ring 422. The first connecting component 6 also includes a third connecting plate 63, one end of which is connected to the first connecting plate 61, and the other end of which is connected to the second connecting plate 62. The third connecting plate 63 is connected to the piston rod of the driving component 31. The three connecting plates are arranged around the control ring 422, and the other side is hinged to the third fixing component 3. When the cylinder pulls the first connecting component 6, the control ring 422 can move stably in the vertical direction.

[0052] See Figure 6In the connection structure of this embodiment, both the first connecting plate 61 and the second connecting plate 62 are provided with limiting grooves 64, and the control ring 422 is provided with limiting holes 65. The limiting grooves 64 and limiting holes 65 are correspondingly provided. The limiting grooves 64 are elongated. The connection structure also includes a limiting member that passes through the limiting grooves 64 and is connected to the limiting holes 65. The limiting member is movably disposed within the limiting grooves 64. When the third fixing component 3 moves in the vertical direction, the limiting member moves within the limiting grooves 64, thereby limiting the movement range of the third fixing component 3 and causing the control ring 422 to move regularly along a straight line, making the docking operation more stable.

[0053] See Figure 5 In the connection structure of this embodiment, the third fixing component 3 includes a fixing plate 32, a fixing block 321 is provided on the fixing plate 32, the second connector 42 is inserted into the fixing block 321, and a communication port is provided on the fixing plate 32 for communicating with the pipeline in the second connector 42.

[0054] The connection structure in this embodiment mainly enables rapid positioning of the pipes and quick-connect male connectors, allowing the first connector 41 and the second connector 42 to quickly align, thus enabling the connection assembly 4 to self-lock. This connection structure has certain positioning accuracy requirements and is suitable for high-speed production lines with tooling plates, making it a reliable docking device.

[0055] The specific operation flow of the connection structure in this embodiment is as follows:

[0056] Place the condenser into the fixture and pull down the first connector 41 to quickly snap it into the connecting slot 111 to achieve the limit.

[0057] After the tooling frame reaches the designated position along the speed-increasing line, the blocking cylinder blocks its forward movement. The second fixing component 2 on the automatic device moves forward, and the limiting part 22 engages below the first fixing component 11. After it is in place, the second fixing component 2 is lifted upward as a whole. The connecting plate 23, due to the limiting effect of the linear bearing and spring, remains in a fixed position, limiting the pipeline and facilitating the docking of the first connector 41 and the second connector 42. At the same time, the cylinder pulls the first connecting component 6 to release the control ring 422. After the second fixing component 2 is lifted into place as a whole, the cylinder pulls the first connecting component 6 to lock the control ring 422 and begins charging the refrigerant.

[0058] After the refrigerant charging is completed, the cylinder pulls the first connecting component 6 to release the control ring 422. The second fixing component 2 descends as a whole. The connecting plate 23 returns to its original position due to the limit through the action of the linear bearing and the spring. After descending to the position, the second fixing component 2 retracts as a whole, completing the automatic device action. The tooling plate flows into the next process.

[0059] It should be noted that the terms "first," "second," etc., in the specification, claims, and accompanying drawings of this application are used to distinguish similar objects and are not necessarily used to describe a specific order or sequence. It should be understood that such data can be interchanged where appropriate so that the embodiments of this application described herein can be implemented in orders other than those illustrated or described herein. Furthermore, the terms "comprising" and "having," and any variations thereof, are intended to cover non-exclusive inclusion; for example, a process, method, system, product, or apparatus that comprises a series of steps or units is not necessarily limited to those steps or units explicitly listed, but may include other steps or units not explicitly listed or inherent to such processes, methods, products, or apparatus.

[0060] Optionally, specific examples in this embodiment can refer to the examples described in the above embodiments, and will not be repeated here.

[0061] The sequence numbers of the embodiments in this application are for descriptive purposes only and do not represent the superiority or inferiority of the embodiments.

[0062] If the integrated units in the above embodiments are implemented as software functional units and sold or used as independent products, they can be stored in the aforementioned computer-readable storage medium. Based on this understanding, the technical solution of this application, in essence, or the part that contributes to the prior art, or all or part of the technical solution, can be embodied in the form of a software product. This computer software product is stored in a storage medium and includes several instructions to cause one or more computer devices (which may be personal computers, servers, or network devices, etc.) to execute all or part of the steps of the methods described in the various embodiments of this application.

[0063] In the above embodiments of this application, the descriptions of each embodiment have different focuses. For parts not described in detail in a certain embodiment, please refer to the relevant descriptions of other embodiments.

[0064] In the several embodiments provided in this application, it should be understood that the disclosed client can be implemented in other ways. The device embodiments described above are merely illustrative; for example, the division of units is only a logical functional division, and in actual implementation, there may be other division methods. For example, multiple units or components may be combined or integrated into another system, or some features may be ignored or not executed. Furthermore, the coupling or direct coupling or communication connection shown or discussed may be through some interfaces, indirect coupling or communication connection between units or modules, and may be electrical or other forms.

[0065] The units described as separate components may or may not be physically separate. The components shown as units may or may not be physical units; that is, they may be located in one place or distributed across multiple network units. Some or all of the units can be selected to achieve the purpose of this embodiment according to actual needs.

[0066] Furthermore, the functional units in the various embodiments of this application can be integrated into one processing unit, or each unit can exist physically separately, or two or more units can be integrated into one unit. The integrated unit can be implemented in hardware or as a software functional unit.

[0067] The above description is only a preferred embodiment of this application. It should be noted that for those skilled in the art, several improvements and modifications can be made without departing from the principle of this application, and these improvements and modifications should also be considered within the scope of protection of this application.

Claims

1. A connection structure, characterized in that, include: The first fixing component (1) includes a first fixing part (11) for connecting to the connecting pipe (5); The second fixing component (2) is movably disposed relative to the first fixing component (1), and the second fixing component (2) includes a second fixing part (21) for contacting the connecting pipe (5). A third fixing component (3) is movably connected to the second fixing component (2); The connecting component (4) includes a first connector (41) connected to the first fixing component (11) and a second connector (42) connected to the third fixing component (3). The connection structure has a connection state. When the connection structure is in the connection state, the first fixing component (11) and the second fixing component (21) abut against the connection pipe (5) to fix the connection pipe (5). The distance between the third fixing component (3) and the first fixing component (11) is adjustable so that the second connector (42) can be connected or disconnected from the first connector (41) through the third fixing component (3). The connecting component (4) is a quick connector; the second connector (42) includes a connecting sleeve (421) for connecting with the first connector (41) and a control ring (422) sleeved on the connecting sleeve (421); the third fixing component (3) includes a driving component (31) connected to the control ring (422), the driving component (31) is movably arranged to drive the control ring (422) to move, thereby controlling the connection sleeve (421) to connect or separate from the first connector (41); the driving component (31) is a cylinder.

2. The connection structure according to claim 1, characterized in that, The first fixing component (11) is provided with a connecting groove (111) for inserting the connecting pipe (5), and the second fixing component (21) is provided with a fixing part (211). When the connecting structure is in the connected state, the fixing part (211) abuts against the connecting pipe (5) located in the connecting groove (111) to clamp the connecting pipe (5) between the fixing part (211) and the first fixing component (11).

3. The connection structure according to claim 2, characterized in that, The first fixing component (11) is provided with a receiving groove (112), which is connected to the connecting groove (111). The bottom of the receiving groove (112) is located on the side of the first connector (41) away from the second connector (42). When the connecting structure is in the connected state, the bottom of the receiving groove (112) abuts against the first connector (41), thereby restricting the position of the first connector (41).

4. The connection structure according to claim 3, characterized in that, The second fixing component (21) is provided with an abutment groove (212); when the connection structure is in the connection state, the inner wall surface of the abutment groove (212) abuts against the first connector (41).

5. The connection structure according to claim 4, characterized in that, The first fixing component (1) includes a mounting plate (12), and the first fixing member (11) is connected to the mounting plate (12); the connecting groove (111) is located on the side of the first fixing member (11) away from the mounting plate (12), and the connecting groove (111) communicates with the outside of the first fixing member (11).

6. The connection structure according to claim 1, characterized in that, The second fixing component (21) is provided with a limiting part (22), which protrudes from the outer surface of the second fixing component (21); the second fixing component (2) is movably disposed along a first preset direction so that the connecting structure reaches the connecting state; when the connecting structure reaches the connecting state, the third fixing component (3) moves along a second preset direction, and the limiting part (22) abuts against the first fixing component (11) to restrict the second fixing component (21) from moving along the second preset direction.

7. The connection structure according to claim 6, characterized in that, The first preset direction and the second preset direction are set perpendicular to each other; and / or, There are two limiting parts (22), and the two limiting parts (22) are located on opposite sides of the first connector (41).

8. The connection structure according to claim 6, characterized in that, The second fixing component (2) includes a connecting plate (23), which is located on the side of the second fixing component (21) away from the third fixing component (3). A guide component (231) is provided on the connecting plate (23). The guide component (231) passes through the second fixing component (21) and is connected to the third fixing component (3). An elastic element (232) is sleeved on the guide component (231). One end of the elastic element (232) is connected to the second fixing component (21), and the other end of the elastic element (232) is connected to the third fixing component (3).

9. The connection structure according to claim 8, characterized in that, The connection structure further includes a first connecting component (6) and a second connecting component (7) that are connected to each other; the first connecting component (6) is rotatably connected to the third fixing component (3), and the first connecting component (6) is connected to the control ring (422); the second connecting component (7) is connected to the piston rod of the cylinder so as to drive the control ring (422) to move through the cylinder.

10. The connection structure according to claim 9, characterized in that, The first connecting component (6) includes a first connecting plate (61) and a second connecting plate (62) spaced apart from each other. The first connecting plate (61) and the second connecting plate (62) are respectively hinged to the third fixing component (3). The control ring (422) is located between the first connecting plate (61) and the second connecting plate (62). The first connecting plate (61) and the second connecting plate (62) are respectively connected to the control ring (422). The first connecting component (6) also includes a third connecting plate (63). One end of the third connecting plate (63) is connected to the first connecting plate (61), and the other end of the third connecting plate (63) is connected to the second connecting plate (62). The third connecting plate (63) is connected to the piston rod of the driving component (31).

11. The connection structure according to claim 10, characterized in that, Both the first connecting plate (61) and the second connecting plate (62) are provided with limiting grooves (64), and the control ring (422) is provided with limiting holes (65). The limiting grooves (64) and the limiting holes (65) are provided correspondingly. The limiting grooves (64) are elongated. The connecting structure also includes a limiting member. The limiting member passes through the limiting grooves (64) and is connected to the limiting holes (65). The limiting member is movably disposed within the limiting grooves (64).

12. The connection structure according to any one of claims 1 to 11, characterized in that, The third fixing component (3) includes a fixing plate (32), a fixing block (321) is provided on the fixing plate (32), the second connector (42) is inserted into the fixing block (321), and a communication port is provided on the fixing plate (32) for communicating with the pipeline in the second connector (42).

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