CN201448433U

CN201448433U - Valve used in gearshift device of engineering automobile

Info

Publication number: CN201448433U
Application number: CN2009200336587U
Authority: CN
Inventors: 周养伦; 李清付
Original assignee: Xian Aerospace Yuanzheng Fluid Control Co Ltd
Current assignee: Xian Aerospace Yuanzheng Fluid Control Co Ltd
Priority date: 2009-06-23
Filing date: 2009-06-23
Publication date: 2010-05-05
Anticipated expiration: 2019-06-23

Abstract

The utility model relates to a valve used in a gearshift device of an engineering automobile, comprising a valve body, a valve seat in the valve body, a valve rod and a first spring, wherein, the valve body, the valve seat and a first boss form an air inlet, the valve body, the valve seat, the first boss and a second boss form a control port, the valve body, the valve rod, the second boss and a second prismatic table form an exhaust outlet, a medium channel, which is communicated with the control port and the exhaust outlet respectively, is arranged in the valve rod, a first sealing member is arranged at the contact point of the valve rod and the valve seat, a second sealing member is arranged at the contact point of a first prismatic table on the valve rod and the second boss on the valve body, a third sealing member is arranged at the contact point of the second prismatic table on the valve rod and the valve body, and a second spring is arranged between the second boss and the second prismatic table. The utility model solves the problems in the prior art that the volume is big, the structure is complex and the failure easily generates in use. The valve has the advantages of compact structure, convenient manufacture and installation and reliable use.

Description

A kind of valve that is used for shifting devices of engineering automobiles

Technical field

The utility model relates to a kind of valve, relates in particular to a kind of valve that is used for shifting devices of engineering automobiles.

Background technique

Be used for big, the complex structure of valve volume in the engineering automobiles gearshift in the prior art, the probability that in use breaks down is bigger.

The model utility content

The utility model purpose provides a kind of valve that is used for shifting devices of engineering automobiles, to overcome the big and complex structure of volume in the technology, the defective that the probability that in use breaks down is bigger.

Technical solution of the present utility model is:

1, a kind of valve that is used for shifting devices of engineering automobiles is characterized in that:

Comprise valve body, be arranged at valve seat, valve rod and first spring in the valve body,

Described valve seat one end is connected mutually with an end of first spring, and the other end contacts with valve rod,

Described valve seat contacts with first boss on being located at valve body;

First terrace with edge on the described valve rod contacts with second boss on being located at valve body;

Second terrace with edge on the described valve rod contacts with valve body,

Wherein, valve body, valve seat and first boss constitute suction port, and valve body, valve seat, valve rod, first boss and second boss constitute the control mouth; Valve body, valve rod, second boss and second terrace with edge constitute relief opening;

The other end of described first spring is fixed in the suction port,

Be provided with medium channel in the described valve rod, wherein medium channel is connected with control mouth and relief opening respectively,

Described valve rod and valve seat touching position are provided with first Sealing; First terrace with edge on the described valve rod is provided with second Sealing with the second boss touching position of being located on the valve body; Second terrace with edge and valve body touching position on the described valve rod are provided with the 3rd Sealing,

Be provided with second spring between described second boss and second terrace with edge.

Technique effect of the present utility model is:

1, compact structure, volume significantly reduces.The utility model carries out layout in narrow space, realize function by whole parts, has compressed volume.

2, manufacturing, easy for installation.The utility model is owing to only there is whole formation, and simple in structure, then makes and that nature is installed is easy.

3, guarantee working properly, use reliable.Because simple in structure, make self to be difficult for breaking down, improved reliability, and the utility model guaranteed necessary medium runner, and each not blowby of runner, guaranteed the normal of its work more.

Description of drawings

Structural representation when Fig. 1 communicates with relief opening for the utility model control mouth.

Structural representation when Fig. 2 communicates with suction port for the utility model control mouth.

Reference character is as follows:

1-valve seat, 2-valve rod, 3-suction port, 4-are controlled mouth, 5-relief opening, 6-medium channel, 7-first spring, 8-first Sealing, 9-second Sealing, 10-the 3rd Sealing, 11-valve body, 12-first boss, 13-first terrace with edge, 14-second boss, 15-second terrace with edge, 16-second spring.

Embodiment

Referring to Fig. 1, the utility model is a kind of valve that is used for shifting devices of engineering automobiles,

Comprise valve body 11, be arranged at valve seat 1, valve rod 2 and first spring 7 in the valve body 11, wherein valve seat 1 one ends are connected mutually with an end of first spring 7, and the other end contacts with valve rod 2, and described valve seat 1 contacts with first boss 12 on being located at valve body 11; First terrace with edge 13 on the valve rod 2 contacts with second boss 14 on being located at valve body 11; Second terrace with edge 15 on the valve rod 2 contacts with valve body 11,

Wherein, valve body 11, valve seat 1 and first boss 12 constitute suction port 3, and valve body 11, valve seat (1), valve rod 2, first boss 12 and second boss 14 constitute control mouth 4; Valve body 11, valve rod 2, second boss 14 and second terrace with edge 15 constitute relief opening 5;

The other end of described first spring 7 is fixed in the suction port 3,

Be provided with medium channel 6 in the described valve rod 2, wherein medium channel 6 is connected with control mouth 4 and relief opening 5 respectively,

Described valve rod 2 is provided with first Sealing 8 with valve seat 1 touching position; First terrace with edge 13 on the valve rod 2 is provided with second Sealing 9 with second boss, 14 touching positions of being located on the valve body 11; Second terrace with edge 15 on the valve rod 2 is provided with the 3rd Sealing 10 with valve body 11 touching positions,

Be provided with second spring 16 between described second boss 14 and second terrace with edge 15.

The utility model work engineering:

State 1, referring to Fig. 1: under the situation that does not have outer controling force, valve rod 2 does not compress second spring 16, do not contact with valve seat 1 yet, valve seat does not compress first spring 7 yet, this moment control mouthfuls 4 is connected by medium channel 6 with relief opening 5, if in the control mouthful pressed gas is arranged then can flow to relief opening 5 by medium channel 6 from control mouth 4, reaches the purpose of exhaust.

State 2, referring to Fig. 2: thus when valve rod 2 under the control force effect to the motion of valve seat direction and promote valve seat 1 when first spring 7 is compressed in the motion of suction port direction, valve rod 2 also compresses second spring 16 simultaneously, promoting valve seats 1 until valve rod 2 moves to when not contacting with first boss 12, suction port 3 is connected with control mouth 4, and, caused control at this moment mouthfuls 4 not to be communicated with relief opening 5 because valve rod 2 is provided with first Sealing 8 with valve seat 1 contacting point.Pressed gas in the suction port 3 enters control mouth 4 at this moment, makes the pressed gas that enters in the control mouth 4 to carry out control operation to gearshift.

State 3, referring to Fig. 1: after valve rod 2 control force was forward removed, first spring 7 drove valve seats 1 and moves to original position, i.e. valve seat 1 and first boss, 12 contacted positions; Because when state 2, produce the power that valve rod 2 moves round about that promotes behind second spring, 16 pressurizeds, so, second spring 16 also drives valve rod 2 reversing motions during the valve seat motion, separate with valve seat 1 until valve rod 2, promptly get back to state 1, control mouthful 4 interior pressed gas flow to relief opening 5 by medium channel 6, pressed gas can't carry out control operation to gearshift again, and valve is waited for control operation next time.

Outer controling force can be an electromagnetic force, also can be mechanical force.

Claims

1. valve that is used for shifting devices of engineering automobiles is characterized in that:

Comprise valve body (11), be arranged at valve seat (1), valve rod (2) and first spring (7) in the valve body (11),

Described valve seat (1) one end is connected mutually with an end of first spring (7), and the other end contacts with valve rod (2),

Described valve seat (1) contacts with first boss (12) on being located at valve body (11);

First terrace with edge (13) on the described valve rod (2) contacts with second boss (14) on being located at valve body (11);

Second terrace with edge (15) on the described valve rod (2) contacts with valve body (11),

Wherein, valve body (11), valve seat (1) and first boss (12) constitute suction port (3), and valve body (11), valve seat (1), valve rod (2), first boss (12) and second boss (14) constitute control mouthful (4); Valve body (11), valve rod (2), second boss (14) and second terrace with edge (15) constitute relief opening (5);

The other end of described first spring (7) is fixed in the suction port (3),

Be provided with medium channel (6) in the described valve rod (2), wherein medium channel (6) is connected with control mouthful (4) and relief opening (5) respectively,

Described valve rod (2) is provided with first Sealing (8) with valve seat (1) touching position; First terrace with edge (13) on the described valve rod (2) is provided with second Sealing (9) with second boss (14) touching position of being located on the valve body (11); Second terrace with edge (15) on the described valve rod (2) is provided with the 3rd Sealing (10) with valve body (11) touching position,

Be provided with second spring (16) between described second boss (14) and second terrace with edge (15).