CN211398856U - Ventilation connecting pipe of air supply system of railway vehicle - Google Patents
Ventilation connecting pipe of air supply system of railway vehicle Download PDFInfo
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- CN211398856U CN211398856U CN201922343447.XU CN201922343447U CN211398856U CN 211398856 U CN211398856 U CN 211398856U CN 201922343447 U CN201922343447 U CN 201922343447U CN 211398856 U CN211398856 U CN 211398856U
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- joint
- connecting pipe
- sealing
- air supply
- sealing groove
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Abstract
The utility model provides a rail vehicle air supply system's ventilation connecting pipe, includes, pipeline main part and sets up two tip loose joints at pipeline main part both ends respectively. The two end movable joints are respectively connected with movable connecting bolts, and the movable connecting bolts are used for connecting the end movable joints to other connecting pipes from the outside. The utility model discloses a fixed tip union is connected in twisting of outside loose joint bolt, and the sealing washer that sets up through tip union terminal surface guarantees that the connection position is sealed. The utility model provides a ventilation connecting pipe, its installation or dismantlement in-process only need the loose joint bolt of swivelling joint end, and need not rotate whole ventilation connecting pipe subassembly like usual. The utility model discloses an installation or dismantlement all do not need too much operating space, convenient construction to can avoid whole coupling assembling rotatory activity in-process outside to receive the friction, avoid the inside rubber hose of the outside sheath friction of ventilation connecting pipe to make it damaged. The utility model discloses can prolong the life of ventilation connecting pipe.
Description
Technical Field
The utility model relates to a rail vehicle spare part field especially relates to a rail vehicle air feed system's ventilation connecting pipe.
Background
A ventilation connecting pipe is arranged in the air supply system of the railway vehicle. The existing ventilation connecting pipe usually adopts a rubber hose to seal air flow so as to realize ventilation. In order to protect the rubber hose, the conventional ventilation connecting pipe is further provided with a metal braided sheath on the outside of the rubber hose.
The end of the existing ventilation connecting pipe structure is generally fixedly connected with the wind union port through threads. The end of the existing ventilation connecting pipe structure is fixed, so that the whole ventilation connecting pipe needs to be rotated in the installation process to screw the threads at the end of the ventilation connecting pipe. Such an installation method requires a larger operation space, and is inconvenient for assembly and construction. And, the rotatory in-process of connecting pipe of ventilating inevitably can make its inside rubber hose touch the outside metal and weave the sheath for rubber hose and metal weave the sheath friction, damage influences inside rubber hose, influences the life of whole connecting pipe of ventilating.
SUMMERY OF THE UTILITY MODEL
In order to solve the defects existing in the prior art, the utility model aims to provide a ventilation connecting pipe of a rail vehicle air supply system. This application can solve the problem that the ventilation connecting pipe of current rail vehicle air feed system installs inconveniently, easy wearing and tearing through loose joint structure.
In order to achieve the above object, the utility model provides a rail vehicle air feed system's ventilation connecting pipe, it includes: a pipe body; a first end union provided at one side end of the pipe main body; a first loose joint bolt rotatably provided on an outer periphery of the first end loose joint; a second end union provided at the other side end of the pipe main body; a second loose joint bolt rotatably disposed at an outer periphery of the second end loose joint; the first end movable joint, the pipeline main body and the second end movable joint are communicated with each other.
Optionally, the ventilation connecting pipe of the above-mentioned arbitrary rail vehicle air feed system, wherein, the outside end of second end union is provided with first seal groove, and the butt has the sealing washer in the first seal groove, one side butt of sealing washer the second end union, the opposite side butt of sealing washer has outer tooth to connect, outer tooth connects the intercommunication and sets up the tip at another connecting pipe.
Optionally, in the ventilation connecting pipe of any air supply system of a rail vehicle, the first sealing groove is an annular groove circumferentially arranged along the outer end of the movable joint at the second end; one side of sealing washer is provided with first bulge along circumference, first bulge with the inner wall looks butt of first seal groove, first bulge seals the terminal surface of second end union circumference.
Optionally, in the ventilation connecting pipe of any air supply system of a rail vehicle, a second sealing groove is circumferentially arranged at an end of the outer tooth joint, and the second sealing groove is an annular groove; and a second bulge is arranged on the other side of the sealing ring along the circumferential direction and is abutted against the inner wall of the second sealing groove, and the second bulge seals the circumferential end face of the outer tooth joint.
Optionally, the ventilation connecting pipe of any air supply system of the rail vehicle is characterized in that the cross-sectional shape of the first sealing groove is different from the cross-sectional shape of the second sealing groove; the cross-sectional shape of the first protrusion of the seal ring is different from the cross-sectional shape of the second protrusion.
Optionally, the cross section of the first sealing groove and the cross section of the second sealing groove are rectangular or arc-shaped; the cross section of the first bulge and the cross section of the second bulge are rectangular or arc-shaped, and the sizes of the cross sections of the first sealing groove and the second sealing groove are matched with those of the first sealing groove and the second sealing groove.
Optionally, the ventilation connecting pipe of any one of the rail vehicle air supply systems is further provided with a guide protrusion extending outward along the axial direction of the second end union on the inner side of the first sealing groove; the inner side of the second sealing groove is also provided with a limiting bulge which extends inwards along the radial direction of the outer tooth joint; the guide protrusion is close to the inner wall of the outer tooth joint and arranged on the outer side of the end face of the limiting protrusion, the sealing ring is sleeved on the periphery of the guide protrusion, and the sealing ring is abutted between the movable joint of the second end portion and the outer tooth joint.
Optionally, the ventilation connecting pipe of any one of the rail vehicle air supply systems, wherein the second loose joint bolt is further in threaded connection with the outside of the second end loose joint and the outside of the outer screwed joint, and the sealing ring is arranged between the inner wall of the second loose joint bolt, the second end loose joint and the outer screwed joint.
Optionally, the ventilation connecting pipe of any one of the rail vehicle air supply systems is characterized in that a sheath is further enclosed outside the outer wall of the pipe main body, one end of the sheath is connected with the first end movable joint, and the other end of the sheath is connected with the second end movable joint.
Optionally, the ventilation connecting pipe of any one of the rail vehicle air supply systems described above, wherein a sealing gasket is abutted to the outer end of the first end movable joint, a third joint is also abutted to the other side of the sealing gasket, and the third joint is communicated with and arranged at the end of another connecting pipe.
Optionally, in the ventilation connecting pipe of the air supply system of the rail vehicle, the sheath is a metal woven sheath. The metal braided sleeve is preferably made of stainless steel. And a wear-resistant interlayer made of materials like asbestos and the like can be further arranged between the metal woven sleeve and the pipeline main body.
Compared with the prior art, the utility model has the following technical effects:
1. the utility model provides a rail vehicle air feed system's ventilation connecting pipe, it connects two tip loose joints respectively at the both ends of pipeline main part, and the loose joint bolt is connected respectively to two tip loose joints, is connected to other connecting pipes with the tip loose joint from the outside by the loose joint bolt. The utility model discloses a screw of outside loose joint bolt connects effect fixed tip loose joint, and the sealing washer that sets up through tip loose joint terminal surface guarantees that the connection position is sealed. The utility model provides a ventilation connecting pipe, its installation or dismantlement in-process only need the loose joint bolt of swivelling joint end, and need not rotate whole ventilation connecting pipe subassembly like usual. Therefore, the utility model discloses an installation or dismantlement all do not need too much operating space, convenient construction to can avoid the rotatory activity in-process outside of whole coupling assembling to receive the friction, avoid the inside rubber hose of the outside sheath friction of connecting pipe that ventilates to make it damaged. The utility model discloses can prolong the life of ventilation connecting pipe
2. Further, for the sealed that the terminal surface can be even between the assurance tip loose joint, the utility model discloses set up the seal groove of different cross sectional shape respectively at the circumference of tip loose joint and the link of the outer tooth structure of opposite side. The two side surfaces of the sealing ring are respectively provided with bulges with different cross-sectional shapes corresponding to the sealing grooves on the two sides. Therefore, the rectangular bulge part can be tightly pressed against the sealing groove with the rectangular section to ensure the sealing effect, and the arc-shaped bulge part can provide guidance for the sealing groove with the other side corresponding to the arc-shaped section, so that the assembly is convenient.
3. The sealing ring is limited to avoid excessive extrusion after the end movable joint enters the outer tooth joint to a proper depth, and a guide bulge extending outwards along the axial direction of the second end movable joint is further arranged on the inner side of the first sealing groove; and a limiting bulge which extends inwards along the radial direction of the outer tooth joint is arranged on the inner side of the second sealing groove. From this, the protruding lateral wall of direction gets into outer tooth joint tip along the inner wall surface of outer tooth joint, and the terminal surface outside to spacing arch of butt in the suitable degree of depth. Therefore, the sealing ring arranged on the periphery of the guide bulge and abutted between the second end movable joint and the outer tooth joint is kept properly extruded, deformation and damage caused by overlarge extrusion force are avoided, sealing loss caused by complete loosening is avoided, and damage caused by unilateral extrusion due to oblique acting force in the screwing process of the movable joint bolt is avoided.
Additional features and advantages of the invention will be set forth in the description which follows, and in part will be obvious from the description, or may be learned by the practice of the invention.
Drawings
The accompanying drawings are included to provide a further understanding of the invention, and are incorporated in and constitute a part of this specification, together with the embodiments of the invention for the purpose of explanation and not limitation of the invention. In the drawings:
fig. 1 is a schematic view of the overall structure of a ventilation connection pipe of a rail vehicle air supply system according to the present invention;
FIG. 2 is a schematic view of a second end union of the end of the vent connector of the present invention in a sealed condition;
fig. 3 is a schematic view of the second end union of the end of the middle ventilation connecting pipe in a disassembled state.
In the drawings, 1 denotes a sheath; 2 denotes a barrier shield; 3 denotes a pipe main body; 4 denotes an external adapter; 41 denotes a second seal groove; 42 represents external threads; 43 denotes another connection pipe; 5 represents a second end union; 51 denotes a first seal groove; 6 denotes a second loose joint bolt; 61 denotes a screw thread; 62 denotes a connecting portion; 7 denotes a seal ring; 71 denotes a first projection; 72 denotes a second projection; and 8 denotes a first end union.
Detailed Description
The preferred embodiments of the present invention will be described in conjunction with the accompanying drawings, and it will be understood that they are presented herein only to illustrate and explain the present invention, and not to limit the present invention.
The meaning of "and/or" in the present invention means that they exist individually or both at the same time.
The meaning of "inside and outside" in the present invention means that the direction from the sheath to the inner air passage of the ventilation connecting pipe is inside, and vice versa, relative to the ventilation connecting pipe itself; and not to the specific limitations of the device mechanism of the present invention.
The term "connected" as used herein may mean either a direct connection between elements or an indirect connection between elements through other elements.
The utility model provides a rail vehicle air feed system's ventilation connecting pipe, it is shown with reference to figure 1, include:
a pipe main body 3;
a first end union 8 provided at one side end of the pipe body 3;
a first loose joint bolt rotatably provided on an outer periphery of the first end loose joint; the first loose joint bolt is in threaded connection with joints arranged at the end parts of other connecting pipes, and the first loose joint bolt is tightly abutted with the joints at the end parts of other connecting pipes to realize pipeline sealing;
a second end union 5 provided at the other end of the pipe body 3;
a second loose joint bolt 6 rotatably provided at an outer periphery of the second end loose joint; the second loose joint bolt is in threaded connection with the outer thread joint 4 arranged at the end part of the other connecting pipe 43, and the second loose joint bolt is tightly abutted against the outer thread joint 4 at the end part of the connecting pipe to realize pipeline sealing;
wherein the first end union, the pipe body 3 and the second end union 5 are in communication with each other.
From this, install the utility model discloses a during the ventilation connecting pipe, as long as aim at the connecting pipe tip of treating the installation respectively with two tip loose joints at its both ends, aim at its outer screwed joint or other corresponding joint design, through will surround on the loose joint bolt that the tip loose joint outside set up connects to outer screwed joint or other joint design outer wall surface assorted screw threads, can with tip loose joint and outer screwed joint or the joint design inseparable butt that corresponds, realize the sealing connection between the pipeline, guarantee that the inside air current of pipeline seals and realizes the ventilation.
For further guaranteeing the inside sealed effect of pipeline, the utility model discloses still can further the outside end of second end union 5 is provided with first seal groove 51, and the butt has sealing washer 7 in the first seal groove, one side butt of sealing washer 7 second end union 5, by the outer tooth of opposite side butt of sealing washer 7 connects 4, realizes sealedly.
As shown in fig. 2 and 3, the first sealing groove may be an annular groove circumferentially disposed along an outer end of the second end union 5;
a first protruding part 71 is arranged on one side of the sealing ring 7 along the circumferential direction, the first protruding part 71 is abutted against the inner wall of the first sealing groove 51, and the first protruding part 71 seals the circumferential end face of the second end movable joint 5;
the second sealing groove may be similarly provided as an annular groove provided in the circumferential direction at the end of the outer adapter 4;
the other side of the sealing ring 7 corresponds to a second sealing groove, a second protruding part 72 is arranged along the circumferential direction, the second protruding part 72 abuts against the inner wall of the second sealing groove, and the second protruding part 72 seals the circumferential end face of the outer tooth joint 4.
Thereby, the seal ring can be tightly abutted between the second end union 5, the outer joint 4 and the second union bolt 6 to provide sealing for the second end union 5 and the outer joint 4.
In order to guarantee that rail vehicle operation in-process, the sealing washer receives the environmental impact expend with heat and contract with cold deformation can not influence sealed effect, the utility model discloses in, can further set up the cross sectional shape of first seal groove 51 different with the cross sectional shape of second seal groove 41 to with this supporting setting the cross sectional shape of the first bulge 71 of sealing washer 7 is different with the cross sectional shape of second bulge 72.
For example, in a more preferred implementation, referring to fig. 3, a cross section of the first seal groove 51 and a cross section of the second seal groove 41 may be rectangular or arc; and the cross section of the first protrusion 71 and the cross section of the second protrusion 72 are set to be rectangular or arc-shaped in accordance with the size of the cross section of the first seal groove 51 and the size of the cross section of the second seal groove 41. Therefore, the arc-shaped cross section of the second protruding part can be matched with the second sealing groove in the assembling process, and guidance is provided for the sealing ring. And the bulge of rectangle, because it has the right angle, the right angle part is heated the expansion can be abundant to seal groove inner wall both sides butt, guarantees sealed degree.
For further facilitating the sealing assembly, referring to fig. 2, the inner side of the first sealing groove 51 is further provided with a guide protrusion extending axially and outwardly along the second end union 5;
the inner side of the second sealing groove is also provided with a limiting bulge which extends inwards along the radial direction of the outer tooth joint 4;
from this, the direction arch is pressed close to outer adapter 4's inner wall, gets into inside from outer adapter's the outside gradually, until reaching spacing bellied terminal surface outside, by spacing protruding butt, restriction its degree of depth that stretches into outer adapter inside. The sealing ring 7 is sleeved on the periphery of the guide protrusion, and the sealing ring 7 is abutted between the second end movable joint 5 and the outer tooth joint 4. Because spacing protruding butt direction protruding terminal surface, the restriction direction arch stretches into the degree of depth that outer tooth connects, the utility model discloses can also further avoid the loose joint bolt to rotate too tightly, excessively extrude the sealing washer and lead to the sealing washer pressurized to break and warp the problem of losing the leakproofness.
In a more specific implementation, the second loose joint bolt 6 for connecting the external tooth joint, which is arranged at the end of the ventilation connecting pipe, may be arranged outside the second end loose joint 5 and the external tooth joint 4. The second loose joint bolt 6 may in particular be provided with a straight side towards the outer thread joint and an inwardly tapering connecting portion 62 towards the second end loose joint. The inner wall butt second end union of connecting portion 62, the straight inner wall of opposite side set up screw thread 61, and the screw thread is connected with the meshing of outer thread 42 of outer thread joint surface, and connecting portion 62 extrudees the outside thread joint direction of second end union, sealing washer 7 sets up between inner wall, second end union 5, the outer thread joint 4 of second loose joint bolt 6, guarantees that two joint inseparable seal rings in the middle of the butt realize sealedly.
Similar to the joint structure, the outer side end of the first end movable joint can be abutted with a sealing gasket, the other side of the sealing gasket is further abutted with a third joint, the third joint is communicated and arranged at the end parts of other connecting pipes, and each joint is in sealing connection to enable gas to circulate in the whole pipeline.
In order to protect the pipeline main body, the outer wall of the pipeline main body 3 is surrounded by a sheath 1, one end of the sheath 1 is connected with a first end movable joint, and the other end of the sheath is connected with a second end movable joint 5. In some specific implementations, the sheath may be selected to be a metal braided sheath. The metal braided sleeve is preferably made of stainless steel. And a wear-resistant interlayer made of materials like asbestos and the like can be further arranged between the metal woven sleeve and the pipeline main body, so that the pipeline main body is prevented from being damaged due to direct friction between the metal woven sleeve and the pipeline main body.
Those of ordinary skill in the art will understand that: although the present invention has been described in detail with reference to the foregoing embodiments, it will be apparent to those skilled in the art that modifications may be made to the embodiments described in the foregoing embodiments, or equivalents may be substituted for elements thereof. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (10)
1. A ventilation connection tube for a rail vehicle air supply system, comprising:
a pipe main body (3);
a first end union (8) provided at one side end of the pipe body (3);
a first loose joint bolt rotatably provided on an outer periphery of the first end loose joint;
a second end union (5) provided at the other end of the pipe main body (3);
a second loose joint bolt (6) rotatably arranged on the periphery of the second end loose joint;
the first end movable joint, the pipeline main body (3) and the second end movable joint (5) are communicated with each other.
2. The ventilation connecting pipe of the air supply system of the railway vehicle as claimed in claim 1, wherein a first sealing groove (51) is arranged at the outer end of the second end movable joint (5), a sealing ring (7) is abutted in the first sealing groove, one side of the sealing ring (7) is abutted against the second end movable joint (5), the other side of the sealing ring (7) is abutted against an outer tooth joint (4), and the outer tooth joint (4) is communicated and arranged at the end of another connecting pipe (43).
3. The ventilation connecting pipe of the air supply system of the railway vehicle as claimed in claim 2, wherein the first sealing groove is an annular groove circumferentially arranged along the outer end of the second end union (5);
one side of the sealing ring (7) is provided with a first protruding part (71) along the circumferential direction, the first protruding part (71) is abutted to the inner wall of the first sealing groove (51), and the first protruding part (71) seals the circumferential end face of the second end movable joint (5).
4. The ventilation connecting pipe of the air supply system of the railway vehicle as claimed in claim 2, wherein a second sealing groove (41) is circumferentially arranged at the end of the outer adapter (4), and the second sealing groove is an annular groove;
and a second bulge (72) is arranged on the other side of the sealing ring (7) along the circumferential direction, the second bulge (72) is abutted against the inner wall of the second sealing groove, and the second bulge (72) seals the circumferential end face of the outer tooth joint (4).
5. The ventilation connection pipe of a rail vehicle air supply system according to claim 4, characterized in that the cross-sectional shape of the first sealing groove (51) is different from the cross-sectional shape of the second sealing groove (41);
the cross-sectional shape of the first protrusion (71) of the seal ring (7) is different from the cross-sectional shape of the second protrusion (72).
6. The ventilation connection pipe of a rail vehicle air supply system according to claim 5, characterized in that the cross section of the first sealing groove (51) and the cross section of the second sealing groove (41) are rectangular or arc-shaped;
the cross section of the first bulge (71) and the cross section of the second bulge (72) are rectangular or arc-shaped and are matched with the cross section of the first sealing groove (51) and the cross section of the second sealing groove (41).
7. The ventilation connection pipe of a railway vehicle air supply system according to claim 5, characterized in that the inner side of the first sealing groove (51) is further provided with a guide projection extending axially outwards along the second end union (5);
the inner side of the second sealing groove is also provided with a limiting bulge which extends inwards along the radial direction of the outer tooth joint (4);
the direction arch is pressed close to the inner wall setting of outer tooth connects (4) is in the spacing bellied terminal surface outside, sealing washer (7) cover is in the bellied periphery of direction, sealing washer (7) butt is in between second end union (5) and outer tooth connect (4).
8. The ventilation connecting pipe of the air supply system of the railway vehicle as claimed in claim 2, wherein the second movable joint (5) and the outer threaded joint (4) are further connected with a second movable joint bolt (6) in a threaded manner, and the sealing ring (7) is arranged between the inner wall of the second movable joint bolt (6), the second movable joint (5) and the outer threaded joint (4).
9. The ventilation connection pipe of a rail vehicle air supply system according to claim 1, characterized in that a sheath (1) is further enclosed outside the outer wall of the duct main body (3), one end of the sheath (1) is connected with a first end union, and the other end of the sheath is connected with a second end union (5).
10. The ventilation connecting pipe for the air supply system of the railway vehicle as claimed in claim 9, wherein a sealing gasket is abutted to the outer end of the first end movable joint, a third joint is further abutted to the other side of the sealing gasket, and the third joint is communicated with and arranged at the end of the other connecting pipe.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201922343447.XU CN211398856U (en) | 2019-12-20 | 2019-12-20 | Ventilation connecting pipe of air supply system of railway vehicle |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201922343447.XU CN211398856U (en) | 2019-12-20 | 2019-12-20 | Ventilation connecting pipe of air supply system of railway vehicle |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN211398856U true CN211398856U (en) | 2020-09-01 |
Family
ID=72211033
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201922343447.XU Active CN211398856U (en) | 2019-12-20 | 2019-12-20 | Ventilation connecting pipe of air supply system of railway vehicle |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN211398856U (en) |
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2019
- 2019-12-20 CN CN201922343447.XU patent/CN211398856U/en active Active
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