CN217158037U

CN217158037U - Double-sealed-cavity pressure switch for locomotive

Info

Publication number: CN217158037U
Application number: CN202220831292.3U
Authority: CN
Inventors: 张�浩; 许文科; 路文吉; 李建超; 段修养; 王月桂; 马潇; 李吉刚; 窦怀彬; 王志军; 杨金鹏; 杨玉红
Original assignee: China National Heavy Duty Truck Group Jinan Power Co Ltd
Current assignee: Cnhtc Jinan Axle Co ltd
Priority date: 2022-04-11
Filing date: 2022-04-11
Publication date: 2022-08-09
Anticipated expiration: 2032-04-11

Abstract

The utility model relates to a double containment chamber formula pressure switch for locomotive belongs to mechanical type switch technical field, including installing connector and casing together and installing push rod and the pressure element in the casing, pressure element is located the push rod below, the connector lower extreme is equipped with the middle part flange, be equipped with the rotor in the middle part flange, pressure element is including two parts, be provided with spring three in the pressure element, install spring two between connector and the push rod upper end, spring one is installed to the intracavity in the push rod, and spring one is located spring two, the intracavity is equipped with the sealed cowling in casing upper portion, be equipped with sealing washer two under the sealed cowling between terminal surface and the casing inner chamber wall, be equipped with sealing washer one between sealed cowling inner wall and the push rod outer wall. The utility model discloses effectively solve the inefficacy that gas leakage, intaking arouse and prolong pressure switch's change cycle, reduce trouble and cost.

Description

Double-sealed-cavity pressure switch for locomotive

Technical Field

The utility model relates to a double containment chamber formula pressure switch for locomotive belongs to mechanical type switch technical field.

Background

At present, in a pressure switch for a locomotive, only single-layer sealing is adopted in a sealing element, and the pressure switch is easy to leak air and enter water vapor into a cavity of the pressure switch to cause failure under complex driving environments and conditions of high-low temperature alternation, wading and the like, so that partial functions of the locomotive cannot be used. Meanwhile, if the locomotive part affects the safety function, the life danger of a driver is easily caused under the condition that the locomotive cannot be used. Also, post-sale maintenance is time consuming and labor intensive for manufacturing systems, and a series of additional costs are incurred for post-sale service.

SUMMERY OF THE UTILITY MODEL

The utility model discloses a solve exist among the prior art not enough, provide a pressure switch for double containment chamber formula locomotive that sealing performance is better.

The utility model discloses a realize through following technical scheme:

the utility model provides a pressure switch for double containment chamber formula locomotive, including installing connector and casing together and installing push rod and the pressure element in the casing, pressure element is located the push rod below, the connector lower extreme is equipped with the middle part flange, be equipped with the rotor in the middle part flange, pressure element is including two parts, be provided with spring three in the pressure element, install spring two between connector and the push rod upper end, spring one is installed to the push rod inner chamber, and spring one is located spring two, the intracavity is equipped with the sealed cowling in casing upper portion, be equipped with sealing washer two under the sealed cowling between terminal surface and the casing inner chamber wall, be equipped with sealing washer one between sealed cowling inner wall and the push rod outer wall.

After the pressure element is pressed, the spring III is compressed, the pressure element is pushed to be in contact with the push rod and the push rod is pushed to move, the push rod overcomes the elastic force of the spring I and the spring II to be in contact with the movable piece under the action of pressure, the movable piece is disconnected from the contact part of the middle flange, and otherwise, the movable piece is in contact with the middle flange. In order to guarantee the stroke, a first spring is arranged in the push rod, the middle of the lower end of a first spring connector is contacted, the movable piece penetrates through the head of the push rod to be contacted with the middle flange, and a second spring enables the movable piece to be tightly attached to the middle flange. The sealing assembly comprises a first sealing ring, a sealing cover and a second sealing ring, the sealing form is optimized from end face sealing to radial sealing, the sealing reliability is improved, the first sealing ring and the plug assembly form a switch working cavity, and the cylinder part of the second sealing ring forms a pneumatic sealing cavity together. The utility model discloses effectively solve the inefficacy that gas leakage, intaking arouse and prolong pressure switch's change cycle, reduce trouble and cost.

The utility model discloses a further improvement still, three upper ends of spring contact with first half pressure element inner chamber wall top, and three lower extremes of spring contact with latter half pressure element inner chamber wall bottom.

The utility model discloses a further improvement still, terminal surface contacts under a spring upper end and the connector, and a spring lower extreme contacts with cavity wall bottom in the push rod.

The utility model discloses a further improvement still, the rotor cover is established outside the push rod upper end, and rotor up end and push rod up end parallel and level.

The utility model discloses a further improvement still, the terminal surface contacts under two upper ends of spring and the connector, and two lower extremes of spring contact with movable plate up end and push rod up end.

The utility model discloses a further improvement still, when the push rod was located the lower extreme, the rotor contacted with the middle part flange.

Compared with the prior art, the utility model discloses the beneficial effect who has is:

Drawings

In order to more clearly illustrate the technical solution of the present invention, the drawings used in the description will be briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art that other drawings can be obtained according to these drawings without creative efforts.

Fig. 1 is a schematic cross-sectional structure diagram of an embodiment of the present invention.

In the figure: 1. a connector; 2. a first spring; 3. a moving plate; 4. a second spring; 5. a push rod; 6. a first sealing ring; 7. a sealing cover; 8. a second sealing ring; 9. a third spring; 10. a housing; 11. a pressure element; 12. and a middle rib.

Detailed Description

The following describes the embodiments of the present invention in further detail with reference to the accompanying drawings.

As shown in fig. 1, the pressure switch for the double-sealed-cavity locomotive comprises a connector 1, a shell 10, a push rod 5 and a pressure element 11, wherein the push rod 5 and the pressure element 11 are installed in the shell 10, the pressure element 11 is located below the push rod 5, a middle flange 12 is arranged at the lower end of the connector 1, a moving plate 3 is arranged in the middle flange 12, the pressure element 11 comprises two parts, a spring III 9 is arranged in the pressure element 11, a spring II 4 is installed between the connector 1 and the upper end of the push rod 5, a spring I2 is installed in an inner cavity of the push rod 5, the spring I2 is located in the spring II 4, a sealed cover 7 is arranged in an inner cavity of the upper portion of the shell 10, a seal ring II 8 is arranged between the lower end face of the sealed cover 7 and the inner cavity wall of the shell 10, and a seal ring I6 is arranged between the inner wall of the sealed cover 7 and the outer wall of the push rod 5.

Wherein, the upper end of the spring III 9 is contacted with the top end of the inner cavity wall of the upper half pressure element 11, and the lower end of the spring III 9 is contacted with the bottom end of the inner cavity wall of the lower half pressure element 11;

the upper end of the first spring 2 is contacted with the lower end surface of the connector 1, and the lower end of the first spring 2 is contacted with the bottom end of the inner cavity wall of the push rod 5;

the moving plate 3 is sleeved outside the upper end of the push rod 5, and the upper end surface of the moving plate 3 is flush with the upper end surface of the push rod 5;

the upper end of the second spring 4 is contacted with the lower end face of the connector 1, and the lower end of the second spring 4 is contacted with the upper end face of the moving plate 3 and the upper end face of the push rod 5;

when the push rod 5 is positioned at the lowest end, the moving plate 3 is contacted with the middle flange 12.

The working principle is as follows:

The embodiments in the present description are described in a progressive manner, each embodiment focuses on differences from other embodiments, and the same and similar parts among the embodiments are referred to each other.

The terms "upper", "lower", "outside", "inside" and the like in the description and claims of the present invention and the above drawings are used for distinguishing relative relationships in positions, if any, and are not necessarily given qualitatively. It is to be understood that the data so used is interchangeable under appropriate circumstances such that the embodiments of the invention described herein are capable of operation in sequences other than those illustrated or otherwise described herein. Furthermore, the terms "comprising" and "having," as well as any variations thereof, are intended to cover non-exclusive inclusions.

The previous description of the disclosed embodiments is provided to enable any person skilled in the art to make or use the present invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other embodiments without departing from the spirit or scope of the invention. Thus, the present invention is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A pressure switch for a double-sealed-cavity locomotive comprises a connector (1), a shell (10), a push rod (5) and a pressure element (11), wherein the push rod (5) and the pressure element (11) are installed in the shell (10), the pressure element (11) is located below the push rod (5), the pressure switch is characterized in that a middle flange (12) is arranged at the lower end of the connector (1), a moving plate (3) is arranged in the middle flange (12), the pressure element (11) comprises two parts, a spring III (9) is arranged in the pressure element (11), a spring II (4) is installed between the connector (1) and the upper end of the push rod (5), a spring I (2) is installed in an inner cavity of the push rod (5), the spring I (2) is located in the spring II (4), a sealing cover (7) is arranged in an inner cavity at the upper part of the shell (10), a sealing ring II (8) is arranged between the lower end face of the sealing cover (7) and the inner cavity wall of the shell (10), a first sealing ring (6) is arranged between the inner wall of the sealing cover (7) and the outer wall of the push rod (5).

2. The pressure switch for a double-sealed chamber type locomotive according to claim 1, wherein the upper end of the spring three (9) is in contact with the top end of the inner chamber wall of the upper half pressure member (11), and the lower end of the spring three (9) is in contact with the bottom end of the inner chamber wall of the lower half pressure member (11).

3. The pressure switch for a dual chamber type motorcycle of claim 1, wherein the upper end of the spring one (2) is in contact with the lower end surface of the connector (1), and the lower end of the spring one (2) is in contact with the bottom end of the inner chamber wall of the push rod (5).

4. The pressure switch for double-sealed-chamber locomotive according to claim 1, wherein said rotor (3) is sleeved outside the upper end of the push rod (5), and the upper end surface of the rotor (3) is flush with the upper end surface of the push rod (5).

5. The pressure switch for a double-sealed chamber type locomotive according to claim 4, wherein the upper end of the second spring (4) is in contact with the lower end surface of the connector (1), and the lower end of the second spring (4) is in contact with the upper end surface of the movable plate (3) and the upper end surface of the push rod (5).

6. The pressure switch for a double-sealed chamber type motorcycle of claim 1, wherein the moving plate (3) is in contact with the middle rib (12) when the push rod (5) is located at the lowermost end.