CN205298896U - High pressure hydraulic system hard tube coupling assembling - Google Patents
High pressure hydraulic system hard tube coupling assembling Download PDFInfo
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- CN205298896U CN205298896U CN201520832983.5U CN201520832983U CN205298896U CN 205298896 U CN205298896 U CN 205298896U CN 201520832983 U CN201520832983 U CN 201520832983U CN 205298896 U CN205298896 U CN 205298896U
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- pipe
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Abstract
本实用新型公开一种高压液压系统硬管连接组件，包括：过渡接头体、管套过渡体、密封圈、管套、螺母和精密无缝钢管；其中，精密无缝钢管，为安装各元件的载体，是高压液压油流通的通道；管套，安装在精密无缝钢管外侧连接处；螺母，安装在管套及精密无缝钢管外侧；管套过渡体，安装在螺母的里面，与精密无缝钢管及过渡接头体密封面贴紧；密封圈，安装在管套过渡体上，与精密无缝钢管及过渡接头体密封面贴紧；过渡接头体，安装在螺母的里面，通过螺纹连接，与管套过渡体密封面贴紧。本实用新型的高压液压系统硬管连接组件具有密封性能好，不易渗漏油，耐高压性能好，耐冲击震动，维修简单等一个或多个优点。
The utility model discloses a hard pipe connection assembly of a high-pressure hydraulic system, comprising: a transition joint body, a pipe sleeve transition body, a sealing ring, a pipe sleeve, a nut and a precision seamless steel pipe; wherein the precision seamless steel pipe is used for installing various components The carrier is the channel for high-pressure hydraulic oil circulation; the sleeve is installed on the outer connection of the precision seamless steel pipe; the nut is installed on the outside of the sleeve and the precision seamless steel pipe; The seam steel pipe and the transition joint body sealing surface are tightly attached; the sealing ring is installed on the sleeve transition body, and is closely attached to the precision seamless steel pipe and the transition joint body sealing surface; the transition joint body is installed inside the nut and connected by threads. It is tightly attached to the sealing surface of the transition body of the sleeve. The hard pipe connection assembly of the high-pressure hydraulic system of the utility model has one or more advantages such as good sealing performance, not easy to leak oil, good high-pressure resistance performance, shock resistance and vibration resistance, and simple maintenance.
Description
Technical Field
The utility model relates to a hydraulic system hard tube coupling assembling especially relates to a high-pressure hydraulic system hard tube coupling assembling.
Background
The hydraulic system has the advantages of simple structure, small volume, light weight, high reaction speed, large output force, capability of conveniently realizing stepless speed regulation, easy realization of frequent reversing, easy realization of automation and the like, so that the hydraulic system is widely applied from civil use to national defense and from general transmission to a control system with high precision.
When the hydraulic system is in operation, the characteristics of pressure impact, time lapse, vibration, temperature and the like often cause the leakage of the hydraulic system pipeline, the energy waste and the environmental pollution. And also affects the safety and reliability of the system operation, increases machine downtime, decreases productivity, increases production costs and causes fouling of the product. Therefore, leakage in the hydraulic system lines must be prevented and controlled.
The traditional hydraulic system hard pipe connection mainly has three modes, the welding mode is basically eliminated due to the fact that a welding slag pollution system is suitable to be generated, and the common mode has two modes, one mode is a clamping sleeve type mode, the other mode is a flaring type mode, as shown in figure 1, the structure schematic diagram of the clamping sleeve type hydraulic system hard pipe connection assembly in the prior art is shown, and the clamping sleeve type hydraulic system hard pipe connection assembly comprises a transition joint body 11 with a 24-degree conical hole, a clamping sleeve 12 with a sharp inner edge and a nut 13. After the clamping sleeve 12 and the nut 13 are sleeved on a precise seamless steel tube 14 and inserted into the transition joint body 11, the nut 13 is screwed, and the rear part of the clamping sleeve 12 is clamped on the tube wall to play a role in stopping retreat due to the action of the inner taper hole of the transition joint body 11 and the back taper of the nut 13; meanwhile, the front cutting edge of the cutting sleeve 12 is cut into the outer wall of the pipe, so that the functions of sealing and pulling-out prevention are achieved. The clamping sleeve type hard pipe connecting assembly for the hydraulic system has the advantages of simple structure, convenience in use and the like. However, at the position where the front cutting edge of the cutting sleeve 12 cuts into the pipe, due to the adoption of rigid sealing, oil leakage often occurs due to high-pressure impact and too large or too small pretightening force of the cutting sleeve 12, and the nut 13 can be broken out in extreme cases, so that danger is generated. Meanwhile, the device also has the defects of easy oil leakage, strict pretightening force, higher manufacturing requirement and the like.
Fig. 2 is a schematic diagram of another prior art flared hydraulic system hard tube connector assembly, which includes a transition joint body 21 having a 74 ° outer tapered surface, a nut 22 for performing a compression function, and a sleeve 23. After the pipe sleeve 23 and the nut 22 are sleeved on the precision seamless steel pipe 24, the end part of the pipe is expanded into a conical surface of 37 degrees by using a flaring machine, the transition joint body 21 is inserted and the nut 22 is screwed, the pipe sleeve 23 is clamped on the outer wall of the precision seamless steel pipe to play a role of preventing pulling and falling off, and the transition joint body 21 is tightly pressed on the conical surface of 37 degrees to form a metal sealing surface. The flared hydraulic system hard tube connecting component has the advantages of low manufacturing requirement, good sealing performance, convenience in use and the like. However, due to the limitation of the metal sealing surface, the oil leakage phenomenon often occurs on the sealing surface due to vibration, the roughness of the sealing surface, angles and the like, and once the oil leakage condition caused by the roughness problem of the metal sealing surface occurs, the problem can be solved only by replacing the transition joint body or flaring the precise seamless steel pipe again, and the maintenance is very inconvenient.
SUMMERY OF THE UTILITY MODEL
The utility model provides a high pressure hydraulic system hard tube coupling assembling can solve easy oil impregnate, the oil leak that current hydraulic line exists, and one or more technical problem such as shock-resistant, vibrations, high pressure, maintenance are inconvenient.
An aspect of the utility model provides a high pressure hydraulic system hard tube coupling assembling, include: the transition joint body, the pipe sleeve transition body, the sealing ring, the pipe sleeve, the nut and the precise seamless steel pipe; the precision seamless steel pipe is a carrier for mounting each element and is a channel for flowing high-pressure hydraulic oil; the pipe sleeve is arranged at the joint of the outer sides of the precise seamless steel pipes; the nut is arranged on the outer sides of the pipe sleeve and the precise seamless steel pipe and is screwed on the transition joint body, so that the precise seamless steel pipe, the pipe sleeve transition body and the sealing ring are in full contact; the pipe sleeve transition body is arranged inside the nut and is tightly attached to the sealing surfaces of the precision seamless steel pipe and the transition joint body; the sealing ring is arranged on the pipe sleeve transition body and is tightly attached to the sealing surfaces of the precision seamless steel pipe and the transition joint body; the transition joint body is arranged in the nut and is connected with the sealing surface of the pipe sleeve transition body tightly through threads.
Preferably, the connection part of the precision seamless steel pipe is manufactured into a 37-degree flaring.
Preferably, the nut is restrained from outward movement by a 37 ° flare of the precision seamless steel tube.
Preferably, one end of the pipe sleeve transition body is a 37-degree outer conical surface, the other end of the pipe sleeve transition body is a 24-degree outer conical surface, and the sealing rings are mounted at the two ends of the pipe sleeve transition body.
Preferably, the pipe sleeve transition body and the sealing ring are in contact sealing with the transition joint body and the sealing surface of the precision seamless steel pipe.
Preferably, one surface of the pipe sleeve transition body is in contact with a 37-degree sealing surface of the precision seamless steel pipe, and the other surface of the pipe sleeve transition body is in contact with a 24-degree sealing surface of the transition joint body, so that the precision seamless steel pipe flows into the pipe sleeve transition body and then flows into the transition joint body after high-pressure oil is introduced into the precision seamless steel pipe.
Preferably, the sealing ring is made of rubber.
The utility model discloses a high pressure hydraulic system hard tube coupling assembling, it is good to have sealing performance, difficult oil impregnate, oil leak, and high pressure resistance is good, and shock-resistant, vibrations require lowly to sealed roughness of face, and the maintenance is simple, one or more advantages such as installation, simple manufacture.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings needed to be used in the description of the embodiments or the prior art will be briefly described below, and it is obvious that the drawings in the following description are some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without inventive exercise.
FIG. 1 is a schematic structural diagram of a ferrule-type hydraulic system hard tube connection assembly in the prior art;
FIG. 2 is a schematic view of another prior art flared hydraulic system hard tube coupling assembly;
fig. 3 is an embodiment of the present invention provides a structural schematic diagram of a hard tube connection assembly of a high-pressure hydraulic system.
Detailed Description
In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, 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, and it is obvious that the described embodiments are some, but not all, embodiments of the present invention. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative efforts belong to the protection scope of the present invention.
As shown in fig. 3, for the utility model discloses a high pressure hydraulic system hard tube coupling assembling structure sketch map of an embodiment, high pressure hydraulic system hard tube coupling assembling includes: transition joint body 31, pipe sleeve transition body 32, sealing ring 33, pipe sleeve 34, nut 35 and precision seamless steel pipe 36. The precision seamless steel pipe 36 is a carrier for mounting each element, and is a passage for flowing high-pressure hydraulic oil; the pipe sleeve 34 is arranged at the connection position outside the pipe of the precision seamless steel 36; the nut 35 is mounted on the outer sides of the pipe sleeve 34 and the precision seamless steel pipe 36; the pipe sleeve transition body 32 is arranged inside the nut 35 and is tightly attached to the sealing surface of the precision seamless steel pipe 36 and the transition joint body 31; the sealing ring 33 is arranged on the pipe sleeve transition body 32 and is tightly attached to the sealing surfaces of the precision seamless steel pipe 36 and the transition joint body 31; the transition joint body 31 is installed inside the nut 35, and is connected with the sealing surface of the pipe sleeve transition body 32 tightly through threads.
The connection part of the precision seamless steel pipe 36 is manufactured into a 37-degree flaring and is fully contacted with the pipe sleeve 34, the stroke of the pipe sleeve 34 is limited, and therefore the nut 35 is prevented from being pulled out.
The pipe sleeve 34 is arranged on the outer side of the precision seamless steel pipe 36 and is in full contact with the 37-degree conical surface, and the other side of the pipe sleeve is in full contact with the nut 35, so that the nut 35 and the 37-degree conical surface are well stressed.
The nut 35 is used for screwing the transition joint body 31, and ensuring sufficient contact among the precision seamless steel pipe 36, the pipe sleeve 34, the pipe sleeve transition body 32 and the sealing ring 33.
One end of the pipe sleeve transition body 32 is a 37-degree outer conical surface, the other end of the pipe sleeve transition body is a 24-degree outer conical surface, and the sealing rings 33 are mounted at the two ends of the pipe sleeve transition body; one surface of the pipe-sleeve transition body 32 is in contact with a 37-degree sealing surface of the precision seamless steel pipe 36, and the other surface is in contact with a 24-degree sealing surface of the transition joint body 31, so that the precision seamless steel pipe 36 flows into the pipe-sleeve transition body 32 after being introduced with high-pressure oil, and then flows into the transition joint body 31 without rigid sealing.
The sealing ring 33 is mounted on the pipe sleeve transition body 32, so that the sealing performance of the pipe sleeve transition body 32 is guaranteed, and the pipe sleeve transition body is shock-resistant, anti-loose, good in sealing effect and high-pressure-resistant.
The transition joint body 31 is used for connecting other pipelines or elements, and is in threaded connection with the nut 35 to ensure the tight contact of other parts and the sealing effect.
When the high-pressure hydraulic oil is used through the connecting assembly, the high-pressure hydraulic oil acts on the sealing ring 33 of the pipe sleeve transition body 32, and the sealing performance of the sealing ring 33 is good, so that the oil smoothly flows into the transition joint body 31 through the inside of the pipe sleeve transition body 32 due to the limitation of the sealing ring 33, and then reaches a final pipeline or element; when hydraulic impact occurs, the sealing ring 33 expands to generate a tendency like outward sliding, and the sealing surface limits the movement of the sealing ring 33 at the moment, so the impact is absorbed by the sealing ring 33, and oil leakage and oil seepage are avoided.
When a fine gap is generated between the pipe sleeve transition body 32 and the sealing surface due to a special working condition, such as severe vibration or knocking, the sealing ring 33 is pressed by the sealing surface, and the sealing ring 33 automatically expands to adapt to the generated gap, and the larger the expansion volume of the sealing ring 33 is, the better the sealing effect is; because the sealing ring 33 is made of rubber, the nut 35 or the transition joint body 31 can be prevented from loosening after installation.
Because the adaptability of the sealing ring 33 to the sealing surface is much better than that of rigid sealing, when the connecting component leaks oil, the transition joint body is unscrewed, the pipe sleeve transition body is taken out, and the sealing ring 33 on the pipe sleeve transition body is replaced, so that the sealing ring is simple and convenient to maintain.
The utility model discloses a combine the advantage of cutting ferrule formula and flaring formula hard tube coupling assembling, it is good to have sealing performance concurrently, is difficult for oil seepage, oil leak, and high pressure resistant performance is good, and shock-resistant, vibrations require lowly to sealed roughness of face, and the maintenance is simple, advantages such as installation, simple manufacture.
In summary, the above embodiments are only used for illustrating the technical solution of the present invention, and not for limiting the same; although the present invention has been described in detail with reference to the foregoing embodiments, it should be understood by those skilled in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some technical features may be equivalently replaced; such modifications and substitutions do not depart from the spirit and scope of the present invention in its corresponding aspects.
Claims (7)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520832983.5U CN205298896U (en) | 2015-10-26 | 2015-10-26 | High pressure hydraulic system hard tube coupling assembling |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520832983.5U CN205298896U (en) | 2015-10-26 | 2015-10-26 | High pressure hydraulic system hard tube coupling assembling |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205298896U true CN205298896U (en) | 2016-06-08 |
Family
ID=56438756
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520832983.5U Expired - Lifetime CN205298896U (en) | 2015-10-26 | 2015-10-26 | High pressure hydraulic system hard tube coupling assembling |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN205298896U (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106195481A (en) * | 2016-10-08 | 2016-12-07 | 威海纳川管材有限公司 | Nonmetal pipeline joint |
| CN108953137A (en) * | 2018-08-16 | 2018-12-07 | 浙江永联民爆器材有限公司 | A kind of seamless steel pipe static state sensitization pipeline |
| CN110332385A (en) * | 2019-08-09 | 2019-10-15 | 中国重汽集团济南动力有限公司 | A new type of sealed wire assembly |
| CN113944815A (en) * | 2021-11-29 | 2022-01-18 | 中船动力研究院有限公司 | Pipeline connecting structure |
-
2015
- 2015-10-26 CN CN201520832983.5U patent/CN205298896U/en not_active Expired - Lifetime
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106195481A (en) * | 2016-10-08 | 2016-12-07 | 威海纳川管材有限公司 | Nonmetal pipeline joint |
| CN108953137A (en) * | 2018-08-16 | 2018-12-07 | 浙江永联民爆器材有限公司 | A kind of seamless steel pipe static state sensitization pipeline |
| CN108953137B (en) * | 2018-08-16 | 2024-04-02 | 浙江永联民爆器材有限公司 | Static sensitization pipeline of seamless steel pipe |
| CN110332385A (en) * | 2019-08-09 | 2019-10-15 | 中国重汽集团济南动力有限公司 | A new type of sealed wire assembly |
| CN113944815A (en) * | 2021-11-29 | 2022-01-18 | 中船动力研究院有限公司 | Pipeline connecting structure |
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Legal Events
| Date | Code | Title | Description |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20160608 |