A hydraulic tube quick coupling assembly
The hydraulic quick-connect assembly, with its multi-seal structure and guide design, solves the sealing and stability problems of hydraulic systems in high-pressure and dusty environments, achieving stable connection and simplified operation, and reducing the risk of oil leakage.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- YANTAI ZHONGYU AEROHYDRAULIC
- Filing Date
- 2025-09-29
- Publication Date
- 2026-07-21
AI Technical Summary
Existing hydraulic quick-connect components are prone to leakage and poor sealing in high-pressure, dusty, or oily environments. They are also prone to loosening under vibration conditions, are time-consuming to operate, and are prone to leakage when disconnected. The locking mechanism is also prone to failure, making them difficult to meet actual needs.
It adopts a combination of multiple sealing structures, elastic blocks and guide designs, labyrinth sealing rings, indicator arrows and anti-slip grooves, and arc-shaped locking pins to achieve stable connection and disconnection of pipelines, preventing contaminant intrusion and oil leakage.
It improves the stability and sealing of hydraulic pipeline connections, reduces oil loss, simplifies the operation process, and enhances the safety and reliability of docking.
Smart Images

Figure CN224533787U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of quick-connect component technology, specifically to a hydraulic pipe quick-connect component. Background Technology
[0002] Quick-connect assemblies are widely used in industrial hydraulic equipment, construction machinery, agricultural machinery and other fields to enable the rapid connection and disconnection of hydraulic pipes and hydraulic components (such as cylinders and valves). They are key components to ensure the maintenance efficiency and operational stability of hydraulic systems.
[0003] Existing hydraulic quick-connect components have significant shortcomings: their sealing structures are simple, mostly single-seal, making them prone to oil leakage or impurity ingress in high-pressure, dusty, or oily environments, increasing losses and failure risks; their reliability in fixing hydraulic pipes is poor, and they are prone to loosening under vibration conditions; they lack guiding and anti-slip designs for docking, making operation time-consuming in multi-pipe scenarios and slipping when gripped in oily environments; they lack effective anti-overflow structures when disconnecting, resulting in oil residue leakage and environmental pollution; and their locking mechanisms are simple, easily failing under high-pressure impacts, making them difficult to adapt to actual usage needs. Utility Model Content
[0004] The purpose of this invention is to provide a hydraulic pipe quick coupling assembly to solve the problems mentioned in the background art.
[0005] To achieve the above objectives, the present invention provides the following technical solution: a hydraulic pipe quick connector assembly, comprising a first pipe, wherein a plurality of elastic blocks are movably sleeved on the right side of the outer wall of the first pipe, and a hose clamp is movably sleeved on the outer wall of the plurality of elastic blocks, and a quick-connect assembly is provided on the right side of the plurality of elastic blocks, wherein a fixing ring, an indicator arrow and an anti-slip groove are sequentially provided on the outer wall of the quick-connect assembly from the outside to the inside, and a second pipe is movably inserted into the right side of the quick-connect assembly.
[0006] The quick-connect assembly includes a first socket. The left side of the outer wall of the first socket is fixedly installed on the right side of multiple elastic locking blocks. The right side of the inner wall of the first socket is fixedly connected to a sliding plug by a spring. A plug is movably inserted into the center of the inner wall of the first socket, and the plug has a hollow tube inside. A sliding ring is slidably sleeved in the middle of the outer wall of the plug. A second socket is movably sleeved at the right end of the plug. The left side of the inner wall of the second socket has six slots equidistantly arranged around the axis at 60 degrees. The inner wall of each slot is fixedly connected to a locking plug by a spring. The right side of the inner wall of the second socket is fixedly connected to a base by a hollow bracket. An anti-overflow block is slidably inserted into the inner wall of the base by a spring, and the outer wall of the anti-overflow block is provided with an anti-overflow washer.
[0007] The beneficial effects of this utility model are as follows: The device can lock the first and second pipes into the first and second sockets respectively by using the hose clamp and multiple sealing rings. When the first socket is inserted into the second socket, the plug pushes open the anti-overflow block, and the snap-fit plug is locked by the spring. Twist the first socket 30 degrees to lock the two securely. Then, unscrew the valve on the first socket to complete the hydraulic pipe connection. The labyrinth-type sealing ring and sealing gasket inside ensure a seal, prevent contaminants from entering, and reduce oil loss.
[0008] To ensure the first and second pipes are stably inserted into the first and second sockets respectively, and to prevent them from becoming detached: The design further includes: multiple elastic blocks are provided at equal intervals around the axis on one side of the outer wall of both the first and second sockets, and the inner side of each elastic block is provided with a textured anti-slip surface.
[0009] By adopting the above technical solution, the first pipe is inserted into the left hole of the first socket and the second pipe is inserted into the right hole of the second socket. Multiple elastic blocks tighten and narrow towards the axis as the hose clamp is turned. The concave and convex anti-slip texture of each elastic block firmly grips the first and second pipes, improving the connection stability.
[0010] To facilitate identification of the connection direction between the first and second sockets and improve docking efficiency: The design further includes: the outer wall of the first socket is provided with a fixing ring, an indicator arrow and an anti-slip groove from left to right, and the outer wall of the second socket is provided with a fixing ring, an indicator arrow and an anti-slip groove from right to left.
[0011] By adopting the above technical solution, the first socket and the second socket are connected to each other in the direction of the arrow through the indicator arrow and the anti-slip groove, thereby improving the connection efficiency. The fixing ring can be put into the lasso for easy carrying and fixing.
[0012] To ensure a tight seal when the first and second sockets are fitted into external pipes, preventing external contaminants from entering through gaps: The design further includes: a labyrinthine sealing ring and multiple sealing gaskets on the left inner wall of the first socket and the right inner wall of the second socket, arranged from the outside in.
[0013] By adopting the above technical solution, external pipes are inserted into the first socket and the second socket respectively. The labyrinth-type sealing ring and multiple sealing gaskets in the first socket and the second socket form multiple sealing protections to prevent contaminants from entering and reduce oil loss.
[0014] To ensure a stable connection between the first and second sockets and prevent the connectors from coming loose: Further configuration: the outer wall of the first socket has multiple arc-shaped pins equidistantly spaced around the axis on the right side, and the outer wall of the second socket has a groove on the left side that is consistent with the size of the outer wall structure of the multiple arc-shaped pins of the first socket.
[0015] By adopting the above technical solution, multiple arc-shaped pins on the first socket are aligned with the grooves of the second socket and inserted. The first socket is then turned 30 degrees to securely lock the two together, physically preventing the interfaces from falling off and improving the safety of the connection.
[0016] To improve the limiting effect of the sliding ring sliding in the middle of the outer wall of the plug and avoid excessive displacement: The plug is further configured such that: the outer wall of the plug is provided with a blocking ring, and the right side of the blocking ring is provided with a sliding ring, the cross section of which is an isosceles triangle.
[0017] By adopting the above technical solution, the plug pushes open the anti-overflow block and is inserted into the second socket. The sliding ring is pushed by the second socket and moves to the left along the middle of the outer wall of the plug until it abuts against the blocking ring on the plug. The blocking ring provides a limit to the sliding ring, thereby improving the docking stability from the side.
[0018] To ensure a tight seal between the inner wall of the second socket and the anti-overflow block, preventing oil leakage when disconnected: Further configuration: The left side of the inner wall of the second socket is provided with a labyrinth-style sealing ring and multiple sealing gaskets.
[0019] By adopting the above technical solution, when the anti-overflow block is affected by the spring reset and slides to the left along the inner wall of the base until the anti-overflow block abuts against the interface of the second socket, the labyrinth-type sealing ring and multiple sealing gaskets on the inner wall of the second socket cooperate with the anti-overflow gasket on the outer wall of the anti-overflow block to form multiple seals, thereby reducing oil leakage.
[0020] The parts of the device not covered herein are the same as or can be implemented using existing technologies. Attached Figure Description
[0021] Figure 1 This is a schematic diagram of the main view of this utility model; Figure 2 This utility model Figure 1 Unfolding diagram; Figure 3 This utility model Figure 2 Frontal sectional view; Figure 4 This is a cross-sectional schematic diagram of the quick-connect component of this utility model; Figure 5 This utility model Figure 2 Schematic diagram of the cross section at point A in the middle.
[0022] In the diagram: 1. First pipe; 2. Elastic locking block; 3. Hose clamp; 4. Quick-connect assembly; 401. First socket; 402. Sliding plug; 403. Plug; 404. Sliding ring; 405. Second socket; 406. Snap-fit plug; 407. Base; 408. Anti-overflow block; 5. Fixing ring; 6. Indicator arrow; 7. Anti-slip groove; 8. Second pipe. Detailed Implementation
[0023] To enable those skilled in the art to better understand the technical solution of the present invention, the present invention will be described in detail below with reference to the accompanying drawings.
[0024] See Figures 1 to 5 A hydraulic pipe quick connector assembly includes a first pipe 1, a plurality of elastic locking blocks 2 are movably sleeved on the right side of the outer wall of the first pipe 1, and a hose clamp 3 is movably sleeved on the outer wall of the plurality of elastic locking blocks 2. A quick-connect component 4 is provided on the right side of the plurality of elastic locking blocks 2. A fixing ring 5, an indicator arrow 6 and an anti-slip groove 7 are provided sequentially from the outside to the inside on the outer wall of the quick-connect component 4. A second pipe 8 is movably inserted into the right side of the quick-connect component 4.
[0025] The quick-connect assembly 4 includes a first socket 401. The left side of the outer wall of the first socket 401 is fixedly installed on the right side of multiple elastic locking blocks 2. The right side of the inner wall of the first socket 401 is fixedly connected to a sliding plug 402 by a spring. A plug 403 is movably inserted into the center of the inner wall of the first socket 401. The plug 403 has a hollow interior with a pipe. A sliding ring 404 is slidably sleeved in the middle of the outer wall of the plug 403. A second socket 405 is movably sleeved at the right end of the plug 403. The left side of the inner wall of the second socket 405 has six slots equidistantly arranged around the axis at sixty degrees. The inner wall of each slot is fixedly connected to a locking plug 406 by a spring. The right side of the inner wall of the second socket 405 is fixedly connected to a base 407 by a hollow bracket. An anti-overflow block 408 is slidably inserted into the inner wall of the base 407 by a spring. An anti-overflow washer is provided on the outer wall of the anti-overflow block 408.
[0026] In this embodiment, as Figure 1 , Figure 2 and Figure 3 As shown, the outer wall of the first socket 401 and the second socket 405 are provided with multiple elastic blocks 2 at equal intervals around the axis, and the inner side of each elastic block 2 is provided with concave and convex anti-slip texture.
[0027] In this embodiment, as Figure 1 and Figure 2 As shown, the outer wall of the first socket 401 is provided with a fixing ring 5, an indicator arrow 6 and an anti-slip groove 7 from left to right, and the outer wall of the second socket 405 is provided with a fixing ring 5, an indicator arrow 6 and an anti-slip groove 7 from right to left.
[0028] In this embodiment, as Figure 3As shown, the left inner wall of the first socket 401 and the right inner wall of the second socket 405 are both provided with a labyrinth-style sealing ring and multiple sealing gaskets from the outside to the inside.
[0029] In this embodiment, as Figure 2 , Figure 3 and Figure 4 As shown, the outer wall of the first socket 401 has multiple arc-shaped pins equidistantly spaced around the axis on the right side, and the outer wall of the second socket 405 has a groove on the left side that is consistent with the size of the outer wall structure of the multiple arc-shaped pins of the first socket 401.
[0030] In this embodiment, as Figure 2 , Figure 3 and Figure 4 As shown, the outer wall of the plug 403 is provided with a blocking ring, and a sliding ring 404 is provided on the right side of the blocking ring. The cross section of the sliding ring 404 is an isosceles triangle.
[0031] In this embodiment, as Figure 5 As shown, the inner left side of the second socket 405 is provided with a labyrinth-style sealing ring and multiple sealing gaskets.
[0032] The hydraulic quick-connector assembly operates as follows: First, the staff prepares the external delivery pipes, such as pipe 1 and pipe 8. Pipe 1 is inserted into the left-side connection hole of socket 401, and pipe 8 is inserted into the right-side connection hole of socket 405. Note that arrow 6 indicates the connection hole opposite to the arrow. The hose clamp 3 is then tightened, and multiple elastic blocks 2 gradually narrow towards the axis as the clamp 3 locks in place. The textured anti-slip surface of each elastic block 2 firmly grips pipe 1 and pipe 8. Simultaneously, the labyrinthine sealing rings and multiple sealing gaskets within sockets 401 and 405 form multiple layers of sealing protection, preventing contaminants from entering through the pipe joint gaps and reducing oil loss. Then, the oil is delivered through sockets 401 and 405. The indicator arrow 6 and anti-slip groove 7 on the first socket 401 are aligned and connected in the direction of the arrow. The fixing ring 5 can be slipped into a sling for easy carrying, or the pipe can be fixed in place after connection. As the connection is completed, the plug 403 in the first socket 401 gradually pushes open the anti-overflow block 408 on the second socket 405. The anti-overflow block 408 slides to the right along the inner wall of the base 407 to compress the spring. When the plug 403 is inserted into the second socket 405, the sliding ring 404 is pushed by the second socket 405 and begins to move to the left along the middle of the outer wall of the plug 403 until it abuts the blocking ring on the plug 403. The six snap-fit blocks 406 in the second socket 405 slide to the left along the curvature of the plug 403, and change with the curvature of the plug 403. The spring is compressed and then inserted between the plug 403 and the sliding ring 404 to form the first lock. Then, multiple arc-shaped pins on the first socket 401 are aligned with the grooves of the second socket 405 and inserted. The first socket 401 is turned 30 degrees to securely lock the two together. As the first socket 401 is turned, multiple balls on the left outer wall of the plug 403 slide around the plug 403, physically forming a second lock to prevent the interfaces from detaching. When it is necessary to disengage, first turn the valve on the first socket 401, then turn the first socket 401 back 30 degrees, and then continue moving the second socket 405 along the direction of the blocking ring. Multiple locking blocks 406 inside the second socket 405 slide along the isosceles triangular slope of the sliding ring 404. 04 is brought to the right side of the snap-fit plug 406, and then the second socket 405 is pulled out. The sliding ring 404 slides to the right in the middle of the outer wall of the plug 403 until it abuts against the left side of the plug 403. The snap-fit plug 406 slides along the slope of the sliding ring 404 towards the arc surface of the plug 403. Then the second socket 405 disengages from the plug 403, completing the separation of the first socket 401 and the second socket 405. The anti-overflow block 408 slides to the left along the inner wall of the base 407 under the influence of the spring reset until the anti-overflow block 408 abuts against the interface of the second socket 405. The labyrinth-type sealing ring and multiple sealing gaskets on the inner wall of the second socket 405 cooperate with the anti-overflow gasket on the outer wall of the anti-overflow block 408 to form multiple seals, thereby reducing oil leakage when the interface is disengaged.
[0033] The contents not described in detail in this specification are existing technologies known to those skilled in the art.
Claims
1. A hydraulic quick-connect fitting assembly, comprising a first pipe (1), characterized in that: The outer wall of the first pipe (1) is movably fitted with multiple elastic blocks (2), and the outer wall of the multiple elastic blocks (2) is movably fitted with hose clamps (3). The right side of the multiple elastic blocks (2) is provided with quick-connect assembly (4). The outer wall of the quick-connect assembly (4) is provided with a fixing ring (5), an indicator arrow (6) and an anti-slip groove (7) from the outside to the inside. The right side of the quick-connect assembly (4) is movably inserted with a second pipe (8). The quick-connect assembly (4) includes a first socket (401). The left side of the outer wall of the first socket (401) is fixedly installed on the right side of multiple elastic locking blocks (2). The right side of the inner wall of the first socket (401) is fixedly connected to a sliding plug (402) by a spring. A plug (403) is movably inserted into the center of the inner wall of the first socket (401). The plug (403) has a hollow pipe inside. A sliding ring (404) is slidably sleeved in the middle of the outer wall of the plug (403). A second socket (405) is movably sleeved at the right end of the plug (403). Six slots are equidistantly arranged around the axis at sixty degrees on the left side of the inner wall of the second socket (405). A locking plug (406) is fixedly connected to the inner wall of each slot by a spring. A base (407) is fixedly connected to the right side of the inner wall of the second socket (405) by a hollow bracket. An anti-overflow block (408) is slidably inserted into the inner wall of the base (407) by a spring. An anti-overflow washer is provided on the outer wall of the anti-overflow block (408).
2. The hydraulic pipe quick coupling assembly as described in claim 1, characterized in that: Both the first socket (401) and the second socket (405) have multiple elastic blocks (2) spaced equidistantly around the axis on one side of their outer walls, and each elastic block (2) has a textured anti-slip surface on its inner side.
3. The hydraulic pipe quick coupling assembly as described in claim 1, characterized in that: The outer wall of the first socket (401) is provided with a fixing ring (5), an indicator arrow (6) and an anti-slip groove (7) from left to right. The outer wall of the second socket (405) is provided with a fixing ring (5), an indicator arrow (6) and an anti-slip groove (7) from right to left.
4. A hydraulic pipe quick coupling assembly as described in claim 1, characterized in that: The inner left side of the first socket (401) and the inner right side of the second socket (405) are provided with a labyrinth-style sealing ring and multiple sealing gaskets from the outside to the inside.
5. A hydraulic hose quick-connect assembly as described in claim 1, characterized in that: The outer wall of the first socket (401) has multiple arc-shaped pins equidistantly arranged around the axis on the right side, and the outer wall of the second socket (405) has a groove on the left side that is consistent with the size of the outer wall structure of the multiple arc-shaped pins of the first socket (401).
6. A hydraulic pipe quick coupling assembly as described in claim 1, characterized in that: The outer wall of the plug (403) is provided with a blocking ring, and a sliding ring (404) is provided on the right side of the blocking ring. The cross section of the sliding ring (404) is an isosceles triangle.
7. A hydraulic hose quick-connect assembly as described in claim 1, characterized in that: The second socket (405) has a labyrinth-style sealing ring and multiple sealing gaskets on the left side of its inner wall.