Quick connector for high-pressure oil pipe

Abstract

The invention relates to the technical field of oil pipe connectors, and discloses a high-pressure oil pipe quick connector which comprises a sleeve head and a plug which are hollow and are clamped in a matched mode, a groove is formed in the sleeve head, a telescopic rubber ring is fixedly connected to the inner wall of the groove, and an inner adjusting ring movably connected with the outer wall of the telescopic rubber ring in an abutting mode is rotatably connected to the inner wall of the groove. The two ends of the inner adjusting ring are movably connected with sealing rings in a clamped mode, the outer side of the inner adjusting ring is fixedly connected with an outer adjusting ring, and a locking assembly is arranged between the outer adjusting ring and the plug. The left side and the right side of the inner cavity of the sleeve head are respectively provided with an abutting part and a conical part corresponding to the plug. After the sleeve head and the plug are in butt joint and locked, the abutting section of the first telescopic sealing sleeve abuts against the abutting part of the inner wall of the sleeve head in a sealed mode, the first corrugated section and the second corrugated section are pressed and evenly deform, and therefore the gap between the sleeve head and the plug is sealed in a pressurized mode, the single-layer sealing range is enlarged, and the comprehensive sealing performance of the joint is greatly improved; in addition, connection speed is high and sealing is stable and reliable.

Description

Technical Field

[0001] The present invention relates to the technical field of oil pipe joints, and particularly relates to a high-pressure oil pipe quick joint. Background Art

[0002] The high-pressure oil pipe is a component of the high-pressure oil circuit. It can withstand a certain oil pressure and has a certain fatigue strength, and can ensure the sealing requirements of the pipeline. The high-pressure oil pipe is mostly used in mechanical equipment such as vehicles and lathes, and can stably and safely transport high-pressure oil. When forming the high-pressure oil circuit, a joint is needed to connect the oil pipe. In order to ensure the timeliness of installation and connection, quick joints are often used for high-pressure oil pipe joints.

[0003] The utility model with the publication number of CN220037731U discloses a high-pressure oil pipe joint for automobiles with reliable sealing and leakage prevention, which relates to the technical field of oil pipe joints. In order to solve the problem that since the oil body flows through the joint for a long time inside the joint, the oil body is easy to penetrate into the threaded connection part between the joint and the oil pipe, making the threaded connection part very lubricated, resulting in easy loosening and detachment between the oil pipe and the joint; it includes a joint body and an oil pipe body. A rotary nut A is arranged on the circumferential outer wall of the joint body; a connecting thread A is arranged inside the joint body; a rotary nut B is arranged on the circumferential outer wall of the oil pipe body; a top-pushing pressure ring is arranged at the bottom of the rotary nut B; a connecting thread head is arranged at the bottom of the oil pipe body; the oil body inside the oil pipe will directly flow through the connecting head and then through the joint body, and will not directly flow through the threaded part of the joint body, so that the situation of lubrication and loosening will not occur due to the threaded part contacting the oil body, reducing the situation of loosening of the threaded part of this joint.

[0004] During the use of the high-pressure oil pipe joint in the above patent, when the joint is connected to the pipeline, the sealing rubber head on the sealing sleeve is laterally squeezed by the connecting thread head, and automatically deforms to fill the inner gap between the connecting head and the connecting thread head in the joint body. However, the range of the squeezed and filled part is small, and there is no hard limit. Subsequently, when the internal oil pressure fluctuates greatly, the deformed part of the sealing rubber head is easy to withdraw, resulting in seal failure; subsequently, as the joint is connected to the pipeline in place, the outer connecting gap is further sealed by further squeezing the sealing rubber ring and the sealing gasket to achieve end face sealing. Since the sealing range of each single-layer seal is small, although multiple seals are used, the overall sealing effect is poor; using threaded rotary connection, the connection speed is slow, and the rotary feed is likely to cause irregular torsional deformation of the seal, reducing the sealing effect. Summary of the Invention

[0005] The purpose of the present invention is to solve the problems that in the use of general high-pressure oil pipe joints, there are problems such as poor sealing effect, slow connection speed, and easy deformation of the seal, which reduces the sealing effect. The present invention provides a high-pressure oil pipe quick joint.

[0006] The present invention specifically adopts the following technical solutions to achieve the above object: A high-pressure oil pipe quick connector includes a socket and a plug that are respectively hollow and are adaptively clamped. The socket has a groove inside, and a telescopic rubber ring is fixedly connected to the inner wall of the groove. An inner adjustment ring that is rotatably connected to the inner wall of the groove and is movably abutted against the outer wall of the telescopic rubber ring is provided. Sealing rings are movably clamped at both ends of the inner adjustment ring. An outer adjustment ring is fixedly connected to the outside of the inner adjustment ring, and a locking assembly is provided between the outer adjustment ring and the plug; On the left and right sides of the inner cavity of the socket, there are respectively an abutting part and a conical part corresponding to the plug. On the left periphery of the plug, a first telescopic sealing sleeve composed of an abutting section and a first corrugated section is fixedly connected. On the right periphery of the plug, a second telescopic sealing sleeve composed of a second corrugated section and a conical sleeve section is fixedly connected. The first and second corrugated sections are both movably abutted against the outer wall of the plug. The outer diameters of the first and second corrugated sections are the same and are both smaller than the inner diameter of the socket. On the left periphery of the plug, an extrusion assembly for adjusting the contraction of the first telescopic sealing sleeve and the second telescopic sealing sleeve is movably connected. A driving assembly for adjusting the extrusion assembly is provided inside the telescopic rubber ring.

[0007] Furthermore, the locking assembly includes locking blocks provided on the upper and lower walls of the right inner cavity of the outer adjustment ring. A triangular card slot is opened at the bottom of the upper locking block. The outer adjustment ring is rotatably sleeved on the periphery of the socket. On the upper and lower sides between the outer adjustment ring and the inner adjustment ring, two connecting sections arranged in a circumferential array are respectively provided. Activity slots corresponding to the connecting sections are respectively opened on the upper and lower sides of the outer wall of the socket.

[0008] Furthermore, the locking assembly further includes a card sleeve fixedly connected to the right periphery of the plug. L-shaped card slots arranged in a circle are opened on both the upper and lower sides of the card sleeve. The L-shaped card slots have entrances provided at the left end of the card sleeve. The locking blocks can be movably clamped with the L-shaped card slots. An L-shaped elastic pressing block is slidably clamped at the front side of the upper L-shaped card slot. A wedge block that can be movably clamped with the triangular card slot is fixedly connected to the left side of the L-shaped elastic pressing block. The rear end of the top of the wedge block has an inclined surface.

[0009] Furthermore, the inner corner part of the L-shaped card slot is chamfered.

[0010] Furthermore, three key slots are circumferentially opened on the right periphery of the socket, and one of the key slots is at the top of the socket. Three key protrusions corresponding to the key slots are provided on the inner wall of the card sleeve.

[0011] Further, the extrusion assembly includes a rotating ring rotatably connected to the outer wall of the plug. A dial groove is formed at the rear side of the top of the rotating ring. Two arc grooves arranged circumferentially are symmetrically formed on the left and right sides of the outer wall of the rotating ring. Incomplete sleeves are fixedly connected to the front and rear sides of the plug. L-shaped pin rods that are slidably clamped on the left and right sides of the incomplete sleeves and are movably clamped with the corresponding arc grooves are provided. The outer ends of the L-shaped pin rods on the left and right sides are fixedly connected with sliding rings slidably sleeved on the outer wall of the plug. The sliding rings on the left and right sides are respectively fixedly connected with the first corrugated section and the second corrugated section. The left end of the abutting section extends beyond the left end of the plug and can be movably abutted against the abutting part.

[0012] Further, the driving assembly includes clamping cylinders fixedly connected to the upper and lower walls of the inner cavity of the inner adjusting ring. The clamping cylinders penetrate through the telescopic rubber ring and are hermetically connected with the telescopic rubber ring. A cross-shaped pin rod is slidably inserted into the clamping cylinder. A through groove corresponding to the cross-shaped pin rod is formed in the middle of the clamping cylinder. Guide grooves arranged circumferentially are symmetrically formed on the left and right walls of the groove. The cross-shaped pin rod is movably clamped with the guide grooves.

[0013] Further, the guide groove is composed of a connected long curved groove and short curved groove, and the radius of the long curved groove is smaller than that of the short curved groove.

[0014] Further, the cross-shaped pin rod can be movably inserted into the dial groove.

[0015] The beneficial effects of the present invention are as follows: After the socket head and the plug are docked and locked in the present invention, the abutting section of the first telescopic sealing sleeve is hermetically abutted against the abutting part on the inner wall of the socket head, and the tapered sleeve section of the second telescopic sealing sleeve is hermetically abutted against the tapered part on the inner wall of the socket head. By controlling the extrusion assembly to extrude the first telescopic sealing sleeve and the second telescopic sealing sleeve on both sides respectively, the first corrugated section is compressed towards the abutting section, and the second corrugated section is compressed towards the tapered sleeve section. The first and second corrugated sections are uniformly deformed under pressure and are respectively abutted against the inner wall of the socket head and the outer wall of the plug, so as to pressurize and seal the gap between the socket head and the plug. The single-layer sealing range is increased and it is not easy to withdraw, thus greatly improving the comprehensive sealing performance at the joint.

[0016] In the present invention, when installed, the outer diameters of the first and second corrugated sections are both smaller than the inner diameter of the socket head. When the plug is inserted into the socket head, the resistance is small, which is convenient for quickly inserting into place. After being inserted in place, by controlling the outer adjusting ring to deflect slightly, the locking assembly can be driven to limit the connection between the socket head and the plug first, and then the driving assembly can be driven to make the adjusting assembly adjust the first and second telescopic sealing sleeves to be fully compressed and sealed. When compressed and sealed, the socket head and the plug cannot be disengaged, and the connection speed of the joint is fast and the sealing is stable and reliable.

[0017] In the present invention, a sealing ring and a telescopic rubber ring are arranged in the groove adjusting area for double sealing and isolation from the outside. By utilizing the deformation ability of the telescopic rubber ring, on the basis of ensuring the sealing of the adjusting area, the adjustment functions of the first and second telescopic sealing sleeves are realized, and the adjustment is stable and reliable. Brief Description of the Drawings

[0018] Figure 1 is a three-dimensional structure diagram of the quick connector of the present invention; Figure 2 is a partial three-dimensional sectional view of the quick connector of the present invention; Figure 3 is a partial three-dimensional sectional view of the socket head part of the quick connector of the present invention; Figure 4 is a partial three-dimensional section of the socket head and the outer adjustment ring part of the quick connector of the present invention Figure 1 ; Figure 5 is a partial three-dimensional sectional view of the plug and the ferrule part of the quick connector of the present invention; Figure 6 is a partial three-dimensional sectional view of the ferrule and the L-shaped card slot part of the quick connector of the present invention; Figure 7 is a partial three-dimensional sectional view of the plug and the second telescopic sealing sleeve of the quick connector of the present invention; Figure 8 is a partial three-dimensional section of the socket head and the outer adjustment ring part of the quick connector of the present invention Figure 2 .

[0019] Reference numerals: 1, socket head; 11, telescopic rubber ring; 12, guide groove; 2, inner adjustment ring; 21, sealing ring; 22, outer adjustment ring; 23, locking block; 24, cartridge; 25, cross pin rod; 3, plug; 31, ferrule; 32, L-shaped card slot; 4, L-shaped elastic pressing block; 41, wedge block; 5, first telescopic sealing sleeve; 6, second telescopic sealing sleeve; 7, swivel ring; 71, dial groove; 72, arc groove; 73, L-shaped pin rod; 74, sliding ring. Detailed Description of the Invention

[0020] To make the objectives, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention.

[0021] Example 1, as Figures 1 - 8 shown, a high-pressure oil pipe quick connector includes a socket head 1 and a plug 3 that are respectively hollow and are adaptively clamped. The socket head 1 has a groove inside, and a telescopic rubber ring 11 is fixedly connected to the inner wall of the groove. An inner adjustment ring 2 that is rotatably connected to the inner wall of the groove and is in movable contact with the outer wall of the telescopic rubber ring 11 is provided. Sealing rings 21 are movably clamped at both ends of the inner adjustment ring 2. An outer adjustment ring 22 is fixedly connected to the outside of the inner adjustment ring 2. A locking assembly is provided between the outer adjustment ring 22 and the plug 3; The left and right sides of the inner cavity of the socket head 1 are respectively provided with an abutting part and a conical part corresponding to the plug 3. A first telescopic sealing sleeve 5 composed of an abutting section and a first corrugated section is fixedly connected to the left side of the periphery of the plug 3. A second telescopic sealing sleeve 6 composed of a second corrugated section and a conical sleeve section is fixedly connected to the right side of the periphery of the plug 3. The first and second corrugated sections are both in movable abutment with the outer wall of the plug 3. The outer diameters of the first and second corrugated sections are the same and are both smaller than the inner diameter of the socket head 1. A squeezing assembly for adjusting the contraction of the first telescopic sealing sleeve 5 and the second telescopic sealing sleeve 6 is movably connected to the left side of the periphery of the plug 3. A driving assembly for adjusting the squeezing assembly is arranged inside the telescopic rubber ring 11.

[0022] During use, control the outer adjustment ring 22 to drive the inner adjustment ring 2 to deflect backward and downward, so that the driving assembly deforms and contracts to avoid displacement, so as to facilitate inserting the plug 3 into the socket head 1. When inserting, since the plug 3 is adaptively clamped with the socket head 1, and the outer diameters of the first and second corrugated sections are both smaller than the inner diameter of the socket head 1, the resistance is small when the plug 3 is inserted into the socket head 1, which is convenient for quick insertion. After the insertion is in place, control the outer adjustment ring 22 to drive the inner adjustment ring 2 to deflect forward and reset. First, drive the locking assembly to limit the connection between the socket head 1 and the plug 3, so that the socket head 1 and the plug 3 cannot be separated. The abutting section of the corresponding first telescopic sealing sleeve 5 squeezes and deforms the abutting part on the inner wall of the socket head 1 to fill the connection gap and achieve sealed abutment. The conical sleeve section of the second telescopic sealing sleeve 6 squeezes and deforms with the conical part on the inner wall of the socket head 1 to fill the connection gap and also achieve sealed abutment. Then, as the control outer adjustment ring 22 continues to deflect and reset, the driving assembly deforms and recovers, driving the adjustment assembly brought by the insertion of the plug 3 to adjust the compression of the first telescopic sealing sleeve 5 and the second telescopic sealing sleeve 6. The first corrugated section corresponding to the first telescopic sealing sleeve 5 and the second corrugated section corresponding to the second telescopic sealing sleeve 6 are thus compressed and deformed, respectively sealing and filling the connection gap between the socket head 1 and the plug 3. When the outer adjustment ring 22 is completely deflected and reset, the connection gap between the socket head 1 and the plug 3 is completely sealed and filled, so as to achieve pressurized sealing between the socket head 1 and the plug 3, and the single-layer sealing range is increased, thus greatly improving the comprehensive sealing performance at the joint. Since the first telescopic sealing sleeve 5 and the second telescopic sealing sleeve 6 are both relatively hard-limited, the compressed and sealed abutting state is not easy to withdraw. In addition, when the outer adjustment ring 22 is completely deflected and reset, the locking assembly automatically locks the plug 3 and the socket head 1, and the two cannot be separated, with fast connection speed and stable and reliable sealing.

[0023] In the second embodiment, on the basis of the above embodiment, the locking assembly includes locking blocks 23 arranged on the upper and lower walls of the right inner cavity of the outer adjustment ring 22. A triangular card slot is opened at the bottom of the upper locking block 23. The outer adjustment ring 22 is rotatably sleeved on the periphery of the socket head 1. Two connecting sections arranged in a circumferential array are respectively arranged on the upper and lower sides between the outer adjustment ring 22 and the inner adjustment ring 2. Activity slots corresponding to the connecting sections are respectively opened on the upper and lower sides of the outer wall of the socket head 1.

[0024] The locking assembly further includes a ferrule 31 fixedly connected to the outer periphery of the right side of the plug 3. L-shaped card slots 32 arranged in a circle are formed on both the upper and lower sides of the ferrule 31. The L-shaped card slots 32 have an entrance provided at the left end of the ferrule 31. The locking block 23 can be movably clamped with the L-shaped card slots 32. An L-shaped elastic pressing block 4 is slidably clamped in the front side of the upper L-shaped card slot 32. A wedge block 41 fixedly connected to the left side of the L-shaped elastic pressing block 4 can be movably clamped with the triangular card slot. The rear end of the top of the wedge block 41 has an inclined surface.

[0025] Before controlling the docking of the plug 3 and the socket 1, rotate the outer adjustment ring 22 to drive the locking block 23 to deflect backward and downward. When the connecting section deflects within the maximum range restricted by the movable slot, insert the plug 3 into the socket 1. The locking block 23 just faces the entrance of the L-shaped card slot 32. As the plug 3 is fully inserted, the locking block 23 moves to the bent part in the L-shaped card slot 32. Subsequently, control the outer adjustment ring 22 to deflect forward and downward to reset. The locking block 23 moves forward to the front side of the L-shaped card slot 32, so as to limit the connection between the socket 1 and the plug 3 and prevent the plug 3 from coming out. Subsequently, as the outer adjustment ring 22 deflects forward and downward to be fully reset, the locking block 23 presses the inclined surface of the wedge block 41 to drive the L-shaped elastic pressing block 4 to compress. When the triangular card slot is docked with the wedge block 41, the L-shaped elastic pressing block 4 resets under its own elastic force to drive the wedge block 41 to be clamped with the triangular card slot, thereby locking the locking block 23. The outer adjustment ring 22 cannot deflect, thus ensuring the stable connection between the plug 3 and the socket 1. When subsequent disassembly is required, just press the L-shaped elastic pressing block 4 to contract.

[0026] Embodiment 3: On the basis of the above embodiment, the inner corner part of the L-shaped card slot 32 is chamfered.

[0027] Furthermore, the left end of the abutting section extends beyond the left end of the plug 3 and can be movably abutted against the abutting part.

[0028] After controlling the plug 3 to be inserted into the socket 1, the left end of the abutting section is movably abutted against the abutting part. When controlling the outer adjustment ring 22 to deflect forward and downward to reset, the locking block 23 at the bent part in the L-shaped card slot 32 moves forward along the chamfered surface, squeezing the chamfer to further insert the plug 3 into the socket 1, so as to squeeze the abutting section to deform it to fill the connection gap. In this process, there is no need to further press the plug 3 from the right end. Only need to hold the socket 1 and the outer adjustment ring 22 for adjustment, which is convenient for reducing the stress damage to the socket 1 during installation.

[0029] Embodiment 4: On the basis of the above embodiment, three key slots are circumferentially formed on the outer periphery of the right side of the socket 1. One of the key slots is located at the top of the socket 1. Three key protrusions corresponding to the key slots are arranged on the inner wall of the ferrule 31.

[0030] With this design, since the L-shaped elastic pressing block 4 is in the upper L-shaped card slot 32, the L-shaped elastic pressing block 4 corresponds to the key protrusions at the top, and correspondingly, the locking block 23 with a triangular card slot is on the upper side and also corresponds to the key groove at the top. Therefore, it is convenient to install and guide between the plug 3 and the socket 1.

[0031] Embodiment 5. On the basis of the above embodiment, the extrusion assembly includes a rotating ring 7 rotatably connected to the outer wall of the plug 3. A dial groove 71 is provided at the rear side of the top of the rotating ring 7. Two arc grooves 72 arranged circumferentially are symmetrically provided on the left and right sides of the outer wall of the rotating ring 7. Incomplete sleeves are fixedly connected to the front and rear sides of the plug 3. L-shaped pin rods 73 that are slidably clamped on the left and right sides of the incomplete sleeves and are movably clamped with the corresponding arc grooves 72 are provided. Outer ends of the L-shaped pin rods 73 on the left and right sides are fixedly connected with sliding rings 74 slidably sleeved on the outer wall of the plug 3. The sliding rings 74 on the left and right sides are respectively fixedly connected to the first corrugated section and the second corrugated section.

[0032] By driving the rotating ring 7 to deflect forward and downward, the rotating ring 7 drives the arc grooves 72 on both sides to squeeze the L-shaped pin rods 73, so as to drive the L-shaped pin rods 73 on both sides to move away from each other along the incomplete sleeves, thereby driving the sliding rings 74 on both sides to squeeze the first telescopic sealing sleeve 5 and the second telescopic sealing sleeve 6 respectively, so as to compress and deform the first and second corrugated sections, and thus cooperate with the abutting section and the conical sleeve section to seal and fill the connection gap between the socket 1 and the plug 3, increase the range of single-layer sealing, and thus greatly improve the comprehensive sealing performance at the joint.

[0033] Embodiment 6. On the basis of the above embodiment, the driving assembly includes clamping cylinders 24 fixedly connected to the upper and lower walls of the inner adjusting ring 2 cavity. The clamping cylinders 24 penetrate through the telescopic rubber ring 11 and are hermetically connected to the telescopic rubber ring 11. A cross pin rod 25 is slidably inserted into the clamping cylinder 24. A through groove corresponding to the cross pin rod 25 is provided in the middle of the clamping cylinder 24. Guide grooves 12 are symmetrically provided on the left and right walls of the groove and are arranged circumferentially. The cross pin rod 25 is movably clamped with the guide grooves 12, and the cross pin rod 25 can be movably inserted into the dial groove 71.

[0034] The guide groove 12 is composed of a long curved groove and a short curved groove that are connected. The radius of the long curved groove is smaller than that of the short curved groove.

[0035] When the outer adjustment ring 22 is controlled to drive the inner adjustment ring 2 to deflect backward and downward, causing the deformation and contraction of the driving component to avoid interference, the inner adjustment ring 2 drives the cartridge 24, causing the cross pin rod 25 to deflect synchronously. The telescopic rubber ring 11 is stretched and deformed by the cartridge 24. Driven by the guide groove 12, the cross pin rod 25 contracts into the cartridge 24, and finally the cross pin rod 25 moves from the long curved groove and is clamped to the end of the short curved groove. The contracted cross pin rod 25 thus does not affect the insertion of the plug 3 into the socket 1. Subsequently, when the plug 3 is inserted into the socket 1 and the outer adjustment ring 22 is controlled to reset, when the cross pin rod 25 moves from the short curved groove and is clamped into the long curved groove, the cross pin rod 25 just inserts into the dial groove 71. Since the outer adjustment ring 22 has been reset and deflected by a certain distance, and the locking block 23 has moved forward by a certain distance along the L-shaped card slot 32, the socket 1 and the plug 3 are stably connected and limited, and the abutting section and the conical sleeve section will no longer undergo extrusion changes. As the outer adjustment ring 22 continues to reset, the cross pin rod 25 pushes the dial groove 71 to drive the rotating ring 7 to deflect forward and downward, thereby stably squeezing the first and second corrugated sections to undergo uniform deformation and sealing and filling the connection gap between the socket 1 and the plug 3. When the outer adjustment ring 22 is completely reset, due to the connection and locking between the socket 1 and the plug 3, the first and second corrugated sections are thus hard-limited and relatively fixed in deformation to achieve stable sealing and filling; Since the telescopic rubber ring 11 is hermetically connected to the cartridge 24, and the inner adjustment ring 2 and the inner cavity of the socket 1 are double-sealed and isolated by providing a movable-sealed sealing ring 21 and a fixed-sealed telescopic rubber ring 11, and by utilizing the deformation ability of the telescopic rubber ring 11, on the basis of ensuring reliable sealing of the adjustment area, the adjustment function of the first telescopic seal sleeve 5 and the second telescopic seal sleeve 6 is realized, and the adjustment is stable and reliable.

[0036] The above description of the disclosed embodiments enables those skilled in the art to implement or use the present invention. Various modifications to these embodiments will be apparent to those skilled in the art. The general principles defined herein can be implemented in other embodiments without departing from the spirit or scope of the present invention. Therefore, the present invention will not be limited to these embodiments shown herein, but rather will be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A high-pressure oil pipe quick connector, comprising a socket (1) and a plug (3) which are respectively hollow and are adaptively clamped, characterized in that, The inside of the socket head (1) has a groove, and the inner wall of the groove is fixedly connected with a telescopic rubber ring (11). The inner wall of the groove is rotatably connected with an inner adjustment ring (2) that is movably abutted against the outer wall of the telescopic rubber ring (11). Both ends of the inner adjustment ring (2) are movably clamped with a sealing ring (21). The outer side of the inner adjustment ring (2) is fixedly connected with an outer adjustment ring (22). A locking component is arranged between the outer adjustment ring (22) and the plug (3). On the left and right sides of the inner cavity of the socket head (1), there are respectively an abutting part and a conical part corresponding to the plug (3). On the left periphery of the plug (3), a first telescopic sealing sleeve (5) composed of an abutting section and a first corrugated section is fixedly connected. On the right periphery of the plug (3), a second telescopic sealing sleeve (6) composed of a second corrugated section and a conical sleeve section is fixedly connected. The first and second corrugated sections are both movably abutted against the outer wall of the plug (3). The outer diameters of the first and second corrugated sections are the same and are both smaller than the inner diameter of the socket head (1). On the left periphery of the plug (3), an extrusion component for adjusting the contraction of the first telescopic sealing sleeve (5) and the second telescopic sealing sleeve (6) is movably connected. Inside the telescopic rubber ring (11), a driving component for adjusting the extrusion component is arranged.

2. The quick connector for high-pressure oil pipes according to claim 1, characterized in that, The locking component includes locking blocks (23) arranged on the upper and lower walls of the right inner cavity of the outer adjustment ring (22). A triangular card slot is opened at the bottom of the upper locking block (23). The outer adjustment ring (22) is rotatably sleeved on the periphery of the socket head (1). On the upper and lower sides between the outer adjustment ring (22) and the inner adjustment ring (2), two connecting sections arranged in a circumferential array are respectively provided. On the upper and lower sides of the outer wall of the socket head (1), movable slots corresponding to the connecting sections are respectively opened.

3. The quick connector for high-pressure oil pipes according to claim 2, characterized in that, The locking component further includes a card sleeve (31) fixedly connected to the right periphery of the plug (3). L-shaped card slots (32) arranged in a circle are opened on both the upper and lower sides of the card sleeve (31). The L-shaped card slots (32) have an entrance arranged at the left end of the card sleeve (31). The locking block (23) can be movably clamped with the L-shaped card slots (32). An L-shaped elastic pressing block (4) is slidably clamped on the front side of the upper L-shaped card slot (32). A wedge block (41) that can be movably clamped with the triangular card slot is fixedly connected to the left side of the L-shaped elastic pressing block (4). The rear end of the top of the wedge block (41) has an inclined surface.

4. A high-pressure oil pipe quick connector according to claim 3, characterized in that, The inner corner part of the L-shaped card slot (32) is chamfered.

5. The quick coupling for high-pressure oil pipes according to claim 4, characterized in that, Three key slots are circumferentially opened on the right periphery of the socket head (1), and one of the key slots is located at the top of the socket head (1). Three key protrusions corresponding to the key slots are arranged on the inner wall of the card sleeve (31).

6. A high-pressure oil pipe quick connector according to claim 5, characterized in that, The extrusion assembly includes a rotating ring (7) rotatably connected to the outer wall of the plug (3). A dial groove (71) is formed at the rear side of the top of the rotating ring (7). Two arc grooves (72) arranged circumferentially are symmetrically formed on the left and right sides of the outer wall of the rotating ring (7). Incomplete sleeves are fixedly connected to the front and rear sides of the plug (3). L-shaped pin rods (73) that are slidably clamped on the left and right sides of the incomplete sleeves and are movably clamped with the corresponding arc grooves (72) are provided. The outer ends of the L-shaped pin rods (73) on the left and right sides are fixedly connected with sliding rings (74) slidably sleeved on the outer wall of the plug (3). The sliding rings (74) on the left and right sides are respectively fixedly connected to the first corrugated section and the second corrugated section. The left end of the abutting section extends beyond the left end of the plug (3) and can movably abut against the abutting part.

7. The quick connector for high-pressure oil pipes according to claim 6, characterized in that, The driving assembly includes clamping cylinders (24) fixedly connected to the upper and lower walls of the inner adjusting ring (2) cavity. The clamping cylinders (24) penetrate through the telescopic rubber ring (11) and are hermetically connected to the telescopic rubber ring (11). A cross pin rod (25) is slidably inserted into the clamping cylinder (24). A through groove corresponding to the cross pin rod (25) is formed in the middle of the clamping cylinder (24). Guide grooves (12) arranged circumferentially are symmetrically formed on the left and right walls of the groove. The cross pin rod (25) is movably clamped with the guide grooves (12).

8. A quick connector for a high-pressure oil pipe according to claim 7, characterized in that, The guide groove (12) is composed of a connected long curved groove and a short curved groove, and the radius of the long curved groove is smaller than that of the short curved groove.

9. The quick connector for high-pressure oil pipes according to claim 8, characterized in that, The cross pin rod (25) can be movably inserted into the dial groove (71).

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