Oil pipe joint structure
By setting a sleeve at the end of the wedge kit to pre-assemble it with the pipe mouth liner, the problem of inconvenient assembly of the existing oil pipe joints is solved, and a simple and efficient assembly process is achieved.
Patent Information
- Application Number
- CN202421408837.5
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-06-20
- Publication Date
- 2025-02-11
- Estimated Expiration
- 2034-06-20
AI Technical Summary
The existing oil pipe joints are inconvenient to assemble, the parts are small and the steps are cumbersome, resulting in inefficient assembly.
A sleeve is provided at the end of the wedge kit so that it can be pre-assembled with the pipe opening liner, and the wedge kit and pipe opening liner are pre-fixed to the interface through the sleeve, simplifying the assembly process.
It achieves simplicity of operation, improves assembly efficiency, and adapts to the use scenarios of oil pipes of different specifications.
Smart Images
Figure CN222458720U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of joint assembly of lubricating oil pipes, in particular to an oil pipe joint structure. Background Art
[0002] In the lubrication system of textile machinery, the lubricating oil pipe needs to be fixed to the interface through the oil pipe joint. Since the pipeline is relatively complicated, the speed of assembly is particularly important.
[0003] An existing oil pipe joint structure generally consists of three small parts, such as Figure 1 As shown, they are respectively a pipe mouth liner 1, a wedge-shaped set 2 and a ferrule 3. The pipe mouth liner 1 is a tube with one end turned over, which is used to be inserted into the port of the oil pipe 5; the wedge-shaped set 2 is sleeved on the end of the oil pipe 5, and its two ends are respectively in the shape of a wedge-shaped cone; the ferrule 3 is provided with an internal thread matching the external thread of the interface 4, and an opening 31 is provided at the outer end thereof for the oil pipe to pass through, and a wedge-shaped inclined surface corresponding to the wedge-shaped cone surface 21 of the wedge-shaped set is provided on the inner side of the opening 31. During assembly, it is necessary to first put the ferrule 3 on the oil pipe made of PC or other materials, then insert the pipe mouth liner 1 into the oil pipe, and then put the wedge-shaped kit 2 on the oil pipe. After the end of the oil pipe 5 is aligned with the interface 4, tighten the ferrule 3. At this time, the wedge-shaped cone surface at one end of the wedge-shaped kit corresponds to the wedge-shaped inclined surface on the inner side of the opening of the ferrule end, and the other end corresponds to the port of the interface 4. The wedge-shaped cone surface 21 corresponding to the wedge-shaped kit is squeezed by the inclined surface on the inner side of the opening of the outer end of the ferrule to make it deform inward, so that the port of the wedge-shaped kit 2 squeezes the oil pipe, and cooperates with the pipe mouth liner 1 to fix the oil pipe to complete the assembly.
[0004] In the above-mentioned assembly process, since the parts are small, the operation is inconvenient, and the assembly steps are complicated, resulting in low assembly efficiency. Utility Model Content
[0005] The utility model aims to provide an oil pipe joint structure to solve the problem of inconvenient assembly of existing oil pipe joints.
[0006] In order to achieve the above object, the utility model provides the following technical solutions:
[0007] A tubing joint structure comprises a pipe orifice liner, a wedge-shaped kit and a ferrule, wherein the pipe orifice liner is inserted into the pipe orifice of the tubing, the wedge-shaped kit is sleeved on the pipe end of the tubing, the ferrule is threadedly connected to the interface and the wedge-shaped conical surface of the wedge-shaped kit is deformed by the compression of the ferrule on the wedge-shaped kit to fix the tubing; an outwardly extending sleeve is provided at one end of the wedge-shaped kit close to the interface, and the sleeve can be snugly sleeved on the pipe orifice liner.
[0008] Preferably, the interface is of external thread type, the ferrule is provided with an internal thread matching the external thread of the interface, the outer end face of the ferrule is provided with an opening for the oil supply pipe to pass through, and the inner side of the opening is provided with a wedge-shaped inclined surface corresponding to the wedge-shaped conical surface of the wedge-shaped kit.
[0009] Furthermore, the outer diameter of the sleeve matches the inner diameter of the interface.
[0010] Preferably, the interface is of internal thread type, the ferrule is provided with external threads matching the internal threads of the interface, the inner diameter of the ferrule matches the outer diameter of the oil pipe, and the end face of the ferrule close to the interface is provided with a wedge-shaped inclined surface 2 corresponding to the wedge-shaped conical surface of the wedge-shaped kit.
[0011] Furthermore, the outer diameter of the pipe orifice lining matches the inner diameter of the oil pipe.
[0012] Furthermore, the inner diameter of the wedge-shaped set matches the outer diameter of the oil pipe.
[0013] Furthermore, one end of the pipe orifice liner away from the interface extends to the outside of the end surface of the ferrule away from the interface, so as to facilitate accurate insertion of the oil pipe.
[0014] Compared with the prior art, the utility model has the following beneficial effects:
[0015] 1. The utility model can be pre-assembled with the pipe nozzle liner by arranging a sleeve opening at the end of the wedge-shaped kit, and then the wedge-shaped kit and the pipe nozzle liner can be pre-fixed and assembled at the interface through a clamping sleeve. During assembly, it is only necessary to insert the oil pipe through the end opening of the clamping sleeve so that the oil pipe enters the gap formed by the wedge-shaped kit and the pipe nozzle liner, and then tighten the clamping sleeve. The operation is simple and the assembly efficiency is greatly improved.
[0016] 2. The utility model provides a joint structure for two different interfaces, which can cope with the use scenarios of various oil pipes of different specifications and has a wider range of adaptability. BRIEF DESCRIPTION OF THE DRAWINGS
[0017] Figure 1 It is a schematic diagram of the existing oil pipe joint structure.
[0018] Figure 2 It is a structural schematic diagram of embodiment 1 of the utility model.
[0019] Figure 3 It is a schematic diagram of the decomposition of the first embodiment of the present utility model.
[0020] Figure 4 It is a structural schematic diagram of embodiment 2 of the present utility model.
[0021] Figure 5 It is a schematic diagram of the decomposition of the second embodiment of the present utility model.
[0022] In the figure: 1, pipe mouth lining; 2, wedge-shaped kit, 21, wedge-shaped cone, 22, sleeve mouth; 3, ferrule, 31, opening, 32, wedge-shaped slope 1, 33, wedge-shaped slope 2; 4, interface; 5, oil pipe. DETAILED DESCRIPTION
[0023] In order to make the purpose, technical solution and advantages of the utility model more clearly understood, the utility model is further specifically described below through embodiments.
[0024] Example 1
[0025] This embodiment improves one of the accessories, namely the wedge-shaped kit described below, without changing the existing interface structure and the structure of most parts of the joint.
[0026] A tubing joint structure, such as Figure 2-3 As shown, it includes a pipe mouth liner 1, a wedge-shaped kit 2 and a ferrule 3, wherein the pipe mouth liner 1 and the ferrule 3 follow the existing structure.
[0027] Specifically, the pipe mouth liner 1 is in a tubular shape, one end of which is turned outward to form a retaining ring, which is used to be inserted into the port of the oil pipe as a liner, and its outer diameter matches the inner diameter of the oil pipe.
[0028] The wedge-shaped set 2 is used to be sleeved on the end of the oil pipe, and its main structure is similar to the existing structure, and the two ends are wedge-shaped cones. The main improvement of this embodiment is that a sleeve 22 extending outward is provided at one end close to the interface, and the inner diameter of the sleeve 22 is small, which matches the outer diameter of the pipe mouth liner 1, so that the wedge-shaped set 2 can be pre-sleeved on the pipe mouth liner 1 without shaking; the outer diameter of the sleeve 22 matches the inner diameter of the interface 4, so that the sleeve 22 can be inserted into the interface and can maintain a stable posture without shaking during pre-assembly.
[0029] The ferrule 3 is provided with an internal thread matching the external thread of the interface 4, and an opening 31 for the oil supply pipe to pass through is provided at the outer end thereof, and a wedge-shaped inclined surface 32 corresponding to the wedge-shaped conical surface 21 of the wedge-shaped sleeve is provided inside the opening. In practical applications, the extrusion deformation can be more easily caused by changing the inclination angle difference between the wedge-shaped conical surface 21 and the wedge-shaped inclined surface 32, for example, the angle between the wedge-shaped conical surface 21 and the axial direction is slightly smaller than the angle between the wedge-shaped inclined surface 32 and the axial direction.
[0030] The joint structure of this embodiment adopts the form of factory pre-assembly. The wedge-shaped kit 2 is pre-sleeved on the pipe mouth liner 1 until the end of the sleeve 22 is against the retaining ring of the pipe mouth liner 1. At this time, the two will not shake relative to each other; then the sleeve 22 is inserted into the interface, and the wedge-shaped kit 2 and the pipe mouth liner 1 are fixed to the interface 4 by the thread cooperation of the ferrule 3 and the interface. There is no need to tighten them. Just screw them until the two wedge-shaped cone surfaces of the wedge-shaped kit 2 are respectively in contact with the wedge-shaped inclined surface 32 and the end face of the interface (the port of the interface is also provided with an inclined surface matching the wedge-shaped cone surface).
[0031] During assembly of this embodiment, it is only necessary to insert the oil pipe of corresponding specifications through the end opening of the ferrule 3 so that the oil pipe enters the gap between the wedge-shaped sleeve 2 and the pipe mouth liner 1, and then tighten the ferrule 3. The wedge-shaped inclined surface 32 squeezes the wedge-shaped conical surface 21 on the wedge-shaped sleeve to deform it inward, thereby causing the port of the wedge-shaped sleeve 2 to squeeze the oil pipe and cooperate with the pipe mouth liner 1 to fix the oil pipe, and the assembly is completed.
[0032] Example 2
[0033] Reference Figure 4-5 The interface of this embodiment is an internal thread structure, which is generally used for connecting oil pipes with relatively large diameters. The difference between this embodiment and embodiment 1 mainly lies in the structure of the ferrule 3.
[0034] Specifically, the ferrule 3 in this embodiment is provided with an external thread matching the internal thread of the interface 4, the inner diameter of the ferrule 3 matches the outer diameter of the oil pipe, and the end surface of the ferrule 3 close to the interface is provided with a wedge-shaped inclined surface 2 33 corresponding to the wedge-shaped conical surface of the wedge-shaped sleeve 2. In practical applications, the extrusion deformation can be more easily caused by changing the inclination angle difference between the wedge-shaped conical surface 21 and the wedge-shaped inclined surface 2 33, for example, the angle between the wedge-shaped conical surface 21 and the axial direction is slightly smaller than the angle between the wedge-shaped inclined surface 2 33 and the axial direction.
[0035] In this embodiment, the end of the wedge-shaped kit 2 close to the interface is also provided with a sleeve 22 extending outward. The inner diameter of the sleeve 22 is small and matches the outer diameter of the pipe mouth liner 1, so that the wedge-shaped kit 2 can be pre-sleeved on the pipe mouth liner 1 without shaking; the outer diameter of the main part of the wedge-shaped kit 2 matches the inner diameter of the interface 4, and can be placed in the interface as a whole.
[0036] When the joint of this embodiment is pre-assembled, the wedge-shaped kit 2 is also pre-sleeved on the pipe mouth liner 1 until the end of the sleeve 22 is against the retaining ring of the pipe mouth liner 1. At this time, the two will not shake relative to each other. Then the whole is placed in the interface 4, and the wedge-shaped kit 2 and the pipe mouth liner 1 are fixed to the interface by the threaded cooperation of the ferrule 3 and the interface. There is no need to tighten them. Just screw them until the wedge-shaped inclined surface 33 of the ferrule 3 contacts the wedge-shaped conical surface 21 of the wedge-shaped kit 2.
[0037] During assembly of this embodiment, it is only necessary to insert the oil pipe of corresponding specifications into the ferrule 3, and the oil pipe then enters the gap between the wedge-shaped set 2 and the pipe mouth liner 1, and then tighten the ferrule 3, the wedge-shaped inclined surface 33 squeezes the wedge-shaped conical surface 21 on the wedge-shaped set to deform inward, so that the port of the wedge-shaped set 2 squeezes the oil pipe, and cooperates with the pipe mouth liner 1 to fix the oil pipe, and the assembly is completed.
[0038] In the above-mentioned Embodiment 1 and Embodiment 2, in order to facilitate the insertion of the oil pipe during assembly, the length of the pipe mouth liner 1 should be designed to extend the end of the pipe mouth liner 1 away from the interface to the outside of the end face of the ferrule 3 away from the interface, that is, the pipe mouth liner 1 is slightly extended outward along the opening of the ferrule 3 to facilitate the insertion of the oil pipe.
[0039] In general, after the oil pipe joint of the utility model is pre-assembled, each accessory can remain stable and not shake. On the one hand, the various parts can be assembled together for easy transportation when leaving the factory. On the other hand, only two actions are required during assembly, which is easy to operate and greatly improves the assembly efficiency.
[0040] The above embodiments are only for illustrating the technical concept and features of the utility model, and their purpose is to enable people familiar with the technology to understand the content of the utility model and implement it accordingly, and they cannot be used to limit the protection scope of the utility model. Any equivalent changes or modifications made according to the spirit of the utility model should be included in the protection scope of the utility model.
Claims
1. A tubing joint structure, comprising a pipe orifice liner, a wedge-shaped sleeve and a ferrule, wherein the pipe orifice liner is inserted into the pipe orifice of the tubing, the wedge-shaped sleeve is sleeved on the pipe end of the tubing, the ferrule is threadedly connected to the interface and the tubing is fixed by the compression of the wedge-shaped sleeve on the wedge-shaped sleeve so that the wedge-shaped cone surface of the wedge-shaped sleeve is deformed; characterized in that: The end of the wedge-shaped set close to the interface is provided with a sleeve opening extending outwards, and the sleeve opening can be snugly sleeved on the inner lining of the pipe opening.
2. The oil pipe joint structure according to claim 1, characterized in that: The interface is of external thread type, the ferrule is provided with an internal thread matching the external thread of the interface, the outer end face of the ferrule is provided with an opening for the oil supply pipe to pass through, and the inner side of the opening is provided with a wedge-shaped inclined surface corresponding to the wedge-shaped conical surface of the wedge-shaped kit.
3. The oil pipe joint structure according to claim 2, characterized in that: The outer diameter of the sleeve matches the inner diameter of the interface.
4. The oil pipe joint structure according to claim 1, characterized in that: The interface is of internal thread type, the ferrule is provided with external threads matching the internal threads of the interface, the inner diameter of the ferrule matches the outer diameter of the oil pipe, and the end face of the ferrule close to the interface is provided with a wedge-shaped inclined surface 2 corresponding to the wedge-shaped conical surface of the wedge-shaped kit.
5. The oil pipe joint structure according to claim 2 or 4, characterized in that: The outer diameter of the pipe orifice liner matches the inner diameter of the oil pipe.
6. The oil pipe joint structure according to claim 2 or 4, characterized in that: The inner diameter of the wedge set matches the outer diameter of the oil pipe.
7. The oil pipe joint structure according to claim 2 or 4, characterized in that: One end of the pipe orifice liner away from the interface extends to the outside of the end surface of the ferrule away from the interface.