Electromechanical hydraulic integrated unit anti-leakage pipeline quick-change connector assembly
By employing a quick-change mechanism with male and female connectors in the electromechanical hydraulic system, utilizing the precise fit between the plug and slot and the threaded connection, combined with a sealing structure, the problem of complex connection of quick-change connector components is solved, enabling fast and reliable pipeline connection and disassembly, ensuring stable system operation and preventing fluid leakage.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-04-28
- Publication Date
- 2026-03-10
AI Technical Summary
In existing electromechanical hydraulic systems, the connection and disassembly of quick-connect couplings are complex, time-consuming, and increase system maintenance costs.
The system employs a quick-change mechanism between male and female connectors, including precise fit between the insert and slot, threaded connection between the bolt rod and threaded groove, combined with a sealing cavity and sealing ring, to achieve fast and reliable connection and disassembly. Impurities are filtered through a screen to ensure stable system operation.
It enables fast and reliable pipeline installation and disassembly, improves system operating efficiency, reduces maintenance time, prevents fluid leakage, and ensures system stability and safety.
Smart Images

Figure CN223984909U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of electromechanical hydraulic systems, and in particular to a quick-connect coupling assembly for leak-proof pipelines in an electromechanical hydraulic integrated unit. Background Technology
[0002] As a key connecting component in electromechanical and hydraulic integrated units, the quick-connect coupling assembly for leak-proof pipelines plays a crucial role in enabling rapid connection and disconnection between pipelines and ensuring the stability and sealing of fluid transmission. It is widely used in numerous fields such as industrial production, aerospace, and automotive manufacturing, directly impacting the system's operational efficiency and reliability.
[0003] In existing technologies, when connecting such quick-connect couplings, the male and female connectors are typically initially aligned, and then connected through simple plugging, unplugging, or rotating operations. More complex connections may require the use of auxiliary tools for tightening. Disconnection is also achieved through the reverse process. For example, in routine hydraulic equipment maintenance, technicians will first inspect the quick-connect coupling for any external damage before connecting or disconnecting it, and after connection, will perform a simple check for leaks.
[0004] However, in work scenarios that require frequent pipeline replacement, complex connection and disassembly operations can consume a lot of time and increase system maintenance costs. To address this issue, an electromechanical-hydraulic integrated unit with leak-proof pipeline quick-connect fittings is proposed. Utility Model Content
[0005] To overcome the above shortcomings, this utility model provides a quick-connect coupling assembly for the anti-leakage pipeline of the electromechanical hydraulic integrated unit, which aims to solve the problem that the complex connection and disassembly operations in the prior art consume a lot of time.
[0006] To achieve the above objectives, the present invention adopts the following technical solution: a quick-connect coupling assembly for an electromechanical hydraulic integrated unit's leak-proof pipeline, comprising a male and a female connector. A first connecting pipe is fixedly connected to the inner wall of the male connector, and a second connecting pipe is fixedly connected to the inner wall of the female connector. A connector head is fixedly connected to the outer wall of the female connector. A quick-connect mechanism is provided between the male and female connectors. The quick-connect mechanism includes: a first guide pipe, the outer wall of which is fixedly connected to the outer wall of the first connecting pipe; a second guide pipe fixedly connected to the outer wall of the second connecting pipe; a drain pipe fixedly connected to the inner wall of the female connector; a plug fixedly connected to the outer wall of the drain pipe; and a bolt rod threadedly connected to the inner wall of the plug.
[0007] As a further description of the above technical solution: an extension tube is fixedly connected to the outer wall of the drainage tube, and a filter screen is fixedly connected to the outer wall of the first guide tube, with the outer wall of the filter screen in contact with the outer side of the extension tube.
[0008] As a further description of the above technical solution: a fixing plate is fixedly connected to the outer wall of the first guide tube, a spring is fixedly connected to the outer wall of the fixing plate, and a connecting seat is fixedly connected to the end of the spring away from the fixing plate.
[0009] As a further description of the above technical solution: a slot is provided on the outer wall of the connector, and the outer wall of the plug is inserted into the inside of the slot.
[0010] As a further description of the above technical solution: the inner walls of the connecting seat, the insert, the male end and the connector are all provided with threaded grooves, and the outer wall of the bolt rod is threadedly connected to the threaded grooves.
[0011] As a further description of the above technical solution: a sealing cavity is provided between the connecting seat and the extension tube.
[0012] As a further description of the above technical solution: a sealing ring is fixedly connected to the outer wall of the extension tube.
[0013] As a further description of the above technical solution: the outer wall of the connecting seat is slidably connected to the inner wall of the male connector.
[0014] This utility model has the following beneficial effects:
[0015] 1. In this utility model, the precise matching of the plug and the slot, along with the threaded connection of the bolt rod and the threaded groove, enables a quick and reliable connection between the male and female connectors, greatly improving the efficiency of pipeline installation and disassembly, effectively reducing system maintenance time, and allowing the connector to be easily exposed when the filter screen is separated, facilitating the operator to clean impurities, ensuring the filtration performance of the filter screen, and thus ensuring the stable operation of the entire system.
[0016] 2. In this utility model, the sealing cavity between the connecting seat and the extension tube and the sealing ring on the outer wall of the extension tube together constitute a reliable sealing structure, which greatly improves the sealing performance of the connection part, effectively prevents fluid leakage, ensures that the system working efficiency is not affected, and reduces the risk of pollution to the working environment. Attached Figure Description
[0017] Figure 1 This is a front view of the quick-connect coupling assembly for the anti-leakage pipeline of the electromechanical-hydraulic integrated unit proposed in this utility model.
[0018] Figure 2 This is a front sectional view of the quick-connect coupling assembly for the anti-leakage pipeline of the electromechanical-hydraulic integrated unit proposed in this utility model.
[0019] Figure 3 This is a schematic diagram of the filter screen of the quick-change connector assembly for the anti-leakage pipeline of the electromechanical-hydraulic integrated unit proposed in this utility model.
[0020] Figure 4 This is a schematic diagram of the sealing ring of the quick-connect coupling assembly for the anti-leakage pipeline of the electromechanical-hydraulic integrated unit proposed in this utility model.
[0021] Legend:
[0022] 1. Male connector; 2. Female connector; 3. Connector; 4. First connecting pipe; 5. Second connecting pipe; 6. First guide pipe; 7. Second guide pipe; 8. Drain pipe; 9. Extension pipe; 10. Sealing cavity; 11. Insert block; 12. Fixing plate; 13. Spring; 14. Connecting seat; 15. Slot; 16. Threaded groove; 17. Bolt rod; 18. Filter screen; 19. Sealing ring. Detailed Implementation
[0023] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.
[0024] Reference Figure 1 - Figure 3 This utility model provides an embodiment of a quick-connect coupling assembly for an electromechanical hydraulic integrated unit's leak-proof pipeline, comprising a male connector 1 and a female connector 2. A first connecting pipe 4 is fixedly connected to the inner wall of the male connector 1, and a second connecting pipe 5 is fixedly connected to the inner wall of the female connector 2. A connector 3 is fixedly connected to the outer wall of the female connector 2, and the connector 3 is used to connect the male connector 1 and the female connector 2. A quick-connect mechanism is provided between the male connector 1 and the female connector 2. The quick-connect mechanism includes: a first guide pipe 6, the outer wall of which is fixedly connected to the outer wall of the first connecting pipe 4; a second guide pipe 7, the outer wall of which is fixedly connected; a drain pipe 8, the inner wall of the female connector 2, which can receive liquid from the first guide pipe 6; and a plug 11, the outer wall of which is fixedly connected. A bolt rod 17 is threadedly connected to the inner wall of the plug 11, and the bolt rod 17 can be threaded into the inside of the plug 11 to connect the male connector 1 and the female connector 2.
[0025] Reference Figure 2 - Figure 4An extension tube 9 is fixedly connected to the outer wall of the drainage tube 8. The extension tube 9 is used to align and contact with the filter screen 18. The filter screen 18 is fixedly connected to the outer wall of the first guide tube 6. The filter screen 18 can filter impurities in the fluid, prevent impurities from entering the electromechanical hydraulic system, avoid impurities from causing wear or blockage to precision components in the system, ensure the normal operation of the system, and extend the service life of the system. The outer wall of the filter screen 18 contacts the outer side of the extension tube 9. A fixing plate 12 is fixedly connected to the outer wall of the first guide tube 6. A spring 13 is fixedly connected to the outer wall of the fixing plate 12. The spring 13 plays the role of buffering and pre-tightening. A connecting seat 14 is fixedly connected to the end of the spring 13 away from the fixing plate 12. When the male head 1 and the female head 2 are not connected, the connecting seat 14 can be pulled to the right to better expose the filter screen 18, thereby facilitating cleaning.
[0026] Reference Figure 2 - Figure 4 A slot 15 is provided on the outer wall of the connector 14. The outer wall of the insert 11 is inserted into the slot 15. The cooperation between the slot 15 and the insert 11 achieves the initial positioning of the male head 1 and the female head 2. Threaded grooves 16 are provided on the inner walls of the connector 14, insert 11, male head 1, and connector 3. The outer wall of the bolt rod 17 is threadedly connected to the threaded groove 16. The threaded groove 16 provides the basic structure for the connection of the bolt rod 17. Through the threaded connection, the bolt rod 17 can firmly connect the connector 14, insert 11, male head 1, and connector 3 together, enhancing the stability and reliability of the entire connection structure. A connection is provided between the connector 14 and the extension tube 9. The sealing cavity 10 further improves the sealing performance of the connection between the male connector 1 and the female connector 2, prevents fluid leakage, and ensures the working efficiency and safety of the electromechanical hydraulic system. A sealing ring 19 is fixedly connected to the outer wall of the extension tube 9. The sealing ring 19 can fill the gap between the extension tube 9 and other components, enhance the sealing effect, and work together with the sealing cavity 10 to effectively prevent fluid from seeping out from the connection. The outer wall of the connecting seat 14 is slidably connected to the inner wall of the male connector 1, which not only ensures that the connecting seat 14 can move flexibly inside the male connector 1 to adapt to different connection situations, but also plays a guiding role to a certain extent, ensuring that the connecting seat 14 and the insert block 11 are accurately connected, which facilitates the quick connection and separation of the male connector 1 and the female connector 2.
[0027] Working principle: When connecting male connector 1 and female connector 2, first align the insert 11 and insert it into the slot 15 opened on the outer wall of the connector 14. The slot 15 and the insert 11 cooperate to achieve the initial positioning of the connection between male connector 1 and female connector 2, ensuring the accuracy of subsequent connection operations. At this time, the spring 13 is in a compressed state, and its preload makes the connector 14 and the insert 11 fit tightly together, maintaining the stability of the initial connection. Then, screw the bolt 17 into the threaded groove 16 opened on the inner wall of the connector 14, the insert 11, male connector 1 and connector 3. As the bolt 17 is tightened, male connector 1 and female connector 2 gradually approach and are tightly connected together. The threaded connection provides a strong fastening force, ensuring the reliability of the connection and effectively preventing loosening during operation.
[0028] After the male connector 1 and female connector 2 are connected, external fluid flows in from the pipe connected to the first connecting pipe 4. The first connecting pipe 4 guides the fluid, and the first guide pipe 6 is fixed to the outer wall of the first connecting pipe 4. It is responsible for guiding the fluid to the filter screen 18. The filter screen 18 can filter impurities in the fluid, prevent impurities from entering the electromechanical hydraulic system, avoid impurities from causing wear and blockage to precision components in the system, ensure the normal operation of the system and extend its service life. The filtered fluid is collected through the guide pipe 8, which is fixed to the inner wall of the female connector 2. It collects the fluid from the first guide pipe 6, and then transports the fluid to the second connecting pipe 5 through the second guide pipe 7. Finally, the fluid flows out from the pipe connected to the second connecting pipe 5, completing the entire fluid transmission process.
[0029] Finally, it should be noted that the above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Although the present utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.
Claims
1. An anti-leakage pipe quick coupling assembly of an electromechanical hydraulic integrated unit, comprising a male head (1) and a female head (2), characterized in that: The inner wall of the male head (1) is fixedly connected with a first communicating pipe (4), the inner wall of the female head (2) is fixedly connected with a second communicating pipe (5), the outer wall of the female head (2) is fixedly connected with a connecting head (3), and a quick change mechanism is arranged between the male head (1) and the female head (2). The quick change mechanism comprises a first flow guide pipe (6), the outer wall of the first flow guide pipe (6) is fixedly connected with the outer wall of the first communicating pipe (4), the outer wall of the second communicating pipe (5) is fixedly connected with a second flow guide pipe (7), the inner wall of the female head (2) is fixedly connected with a flow guide pipe (8), the outer wall of the flow guide pipe (8) is fixedly connected with an insertion block (11), and the inner wall of the insertion block (11) is threadedly connected with a bolt rod (17).
2. The electro-hydraulic integrated unit leak-barrier line quick connector assembly of claim 1, wherein: The outer wall of the flow guide pipe (8) is fixedly connected with an extension pipe (9), the outer wall of the first flow guide pipe (6) is fixedly connected with a filter screen (18), and the outer wall of the filter screen (18) is in contact with the outer side of the extension pipe (9).
3. The electromechanical hydraulic integrated unit leak-barrier line quick connector assembly of claim 2, wherein: The outer wall of the first flow guide pipe (6) is fixedly connected with a fixed plate (12), the outer wall of the fixed plate (12) is fixedly connected with a spring (13), and the end of the spring (13) away from the fixed plate (12) is fixedly connected with a connecting seat (14).
4. The electromechanical hydraulic integrated unit leak-barrier line quick connector assembly of claim 3, wherein: The outer wall of the connecting seat (14) is provided with an insertion slot (15), and the outer wall of the insertion block (11) is inserted into the insertion slot (15).
5. The electromechanical hydraulic integrated unit leak-barrier line quick connector assembly of claim 4, wherein: The inner walls of the connecting seat (14), the insertion block (11), the male head (1) and the connecting head (3) are all provided with threaded grooves (16), and the outer wall of the bolt rod (17) is threadedly connected with the threaded grooves (16).
6. The electromechanical hydraulic integrated unit leak-barrier line quick connector assembly of claim 3, wherein: A sealing cavity (10) is arranged between the connecting seat (14) and the extension pipe (9).
7. The electromechanical hydraulic integrated unit leak-barrier line quick connector assembly of claim 2, wherein: The outer wall of the extension pipe (9) is fixedly connected with a sealing ring (19).
8. The electromechanical hydraulic integrated unit leak-barrier line quick connector assembly of claim 3, wherein: The outer wall of the connecting seat (14) is in sliding connection with the inner wall of the male head (1).