阅读说明：本技术 一种缓和接头及制动阀控制组件 (Relaxation joint and brake valve control assembly ) 是由 王汉峰 王伟伟 邵建国 于 2020-07-16 设计创作，主要内容包括：本发明公开了一种缓和接头及制动阀控制组件,其中缓和接头包括：接头本体,具有进气口、出气口、连通进气口和出气口的连通通道；挡片,与接头本体的内侧壁之间设置有间隙部并活动设置在连通通道内；第一阻挡件,设置在连通通道内,具有用于与挡片相抵接的第一抵接部；第二阻挡件,设置在连通通道内并位于第一阻挡件与出气口之间,且当挡片与第二阻挡件相抵接后,位于第二阻挡件设置位置处的进气口与出气口之间连通的通道面积会减少。本发明的缓和接头通过在制动阀与制动分泵之间设置缓和接头以减缓进入到制动时需要较慢响应的轮胎上的气压的传送速度,能够防止轮胎抱死更好的实现挂车每个轮子制动协调性实现平稳制动,降低了轮胎的损耗。(The invention discloses a moderate joint and a brake valve control assembly, wherein the moderate joint comprises: the joint body is provided with an air inlet, an air outlet and a communication channel for communicating the air inlet and the air outlet; a gap part is arranged between the baffle plate and the inner side wall of the joint body and is movably arranged in the communicating channel; the first blocking piece is arranged in the communication channel and is provided with a first abutting part for abutting against the blocking piece; and the second blocking piece is arranged in the communicating channel and is positioned between the first blocking piece and the air outlet, and after the blocking piece is abutted against the second blocking piece, the area of the channel communicated between the air inlet and the air outlet at the position where the second blocking piece is arranged can be reduced. The relieving connector is arranged between the brake valve and the brake cylinder to relieve the transmission speed of air pressure on the tire needing slower response when the vehicle enters the brake, so that the tire can be prevented from being locked, the brake coordination of each wheel of the trailer can be better realized, the stable brake can be realized, and the loss of the tire is reduced.)

1. A mild joint, comprising:

the joint body is provided with an air inlet, an air outlet and a communication channel for communicating the air inlet and the air outlet;

a gap part is arranged between the baffle plate and the inner side wall of the joint body and is movably arranged in the communicating channel;

the first blocking piece is arranged in the communication channel and is provided with a first abutting part for abutting against the blocking piece;

the pressure relief channel is arranged on the baffle and/or the first blocking piece, so that after the baffle is abutted against the first abutting part, the air outlet is communicated to the air inlet through the pressure relief channel;

and the second blocking piece is arranged in the communication channel, is positioned between the first blocking piece and the air outlet, is provided with a second abutting part for abutting against the blocking piece, and is partially covered on the communication channel positioned at the position of the second abutting part after the blocking piece abuts against the second abutting part.

2. The mitigation joint of claim 1, wherein: the second blocking piece is provided with a through hole communicated with the air inlet and the air outlet, the blocking piece is provided with a buffering air hole, and the blocking piece covers the through hole and enables the air inlet to be communicated with the air outlet through the buffering air hole after the blocking piece is abutted against the second abutting part.

3. The mitigation joint of claim 1, wherein: the inner side wall of the joint body is provided with a positioning support part which protrudes inwards and supports the first blocking piece; the first blocking piece is in clearance fit with the communication channel;

the moderate joint is also provided with a positioning piece which is detachably arranged and fixed on the inner side wall of the joint body, and the positioning piece is abutted against the top of the first blocking piece.

4. The mitigation joint of claim 3, wherein: the first blocking piece is provided with an annular supporting part and an annular shoulder part which protrudes outwards from the annular supporting part, and the annular shoulder part is abutted with the positioning supporting part; the first abutting portion is provided at one end of the annular support portion close to the second blocking member.

5. The mitigation joint of claim 2, wherein: the pressure relief channel comprises a buffer air hole arranged on the baffle sheet and/or the pressure relief channel comprises a connecting hole arranged on the first blocking piece.

6. The mitigation joint of claim 1, wherein: the second is provided with the sealing washer constant head tank on blockking, be located in the sealing washer constant head tank with the sealing washer of separation blade looks adaptation.

7. The mitigation joint of claim 1, wherein: the joint body is provided with an upper body and a lower body which is fixedly connected with the upper body; the communicating channel comprises an upper channel arranged in the upper body and a lower channel arranged in the lower body, and the size of the upper channel is larger than that of the lower channel; the baffle plate is movably arranged in the upper channel, and the second blocking piece is one end of the lower body.

8. The mitigation joint of claim 1, wherein: the relaxation joint is also provided with a reducing adapter which is detachably connected and fixed with the joint body, the first end of the reducing adapter is in threaded connection with the joint body, and the second end of the reducing adapter is provided with a switching part which is used for being connected with the air outlet of the brake valve.

9. A brake valve control assembly, characterized by: comprising a mild connector according to any one of claims 1-8, a brake valve and a wheel cylinder, the inlet port of the mild connector being in communication with the outlet port of the brake valve and the outlet port of the mild connector being in communication with the brake chamber of the wheel cylinder.

10. The brake valve control assembly of claim 9, wherein: a quick-release joint is also arranged between the air outlet of the relaxation joint and the brake cylinder, and the quick-release joint is provided with a shell, a quick-release air inlet, a quick-release air outlet, a quick-release air channel, a one-way tympanic membrane and an air inlet channel which are arranged on the shell;

the quick exhaust air inlet is communicated with an air outlet of the relaxation joint, the quick exhaust air outlet is communicated with an air inlet of the brake cylinder, the quick exhaust air inlet is communicated with the quick exhaust air outlet through an air inlet channel, and the quick exhaust air channel is communicated with the air inlet channel and the outside;

the unidirectional tympanic membrane is arranged in the air inlet channel in a sliding way and blocks the air inlet of the quick exhaust air channel in a braking state so that braking air pressure enters the brake cylinder through the quick exhaust air outlet; and away from the inlet of the fast exhaust air passage after the brake is released.

Technical Field

The invention relates to the technical field of vehicle braking, in particular to a relaxation joint and a brake valve control assembly.

Background

In the existing trailer system, the height of a tractor traction seat of the main vehicle is limited, so that the front of the trailer is high, the rear of the trailer is low, two rows of axles or three rows of axles are generally arranged on the trailer part at the same time, the grip force of the tires on the axles in different rows is different from that on the ground, the bearing capacity of the tires on the rear side of the trailer is generally larger, and the grip force of the tires on the front side of the trailer is larger than that of the tires on the ground. The response speed of braking required during braking is different due to the difference in the grip force of the tires arranged in front and behind. If the braking speed of the tire with small ground gripping force is the same, the tire is easily locked or an axle is easily bounced, so that the tire with large gripping force is in a state of asynchronous braking, the tire of the front axle is easily dragged after the braking is finished, and the abrasion of the tire is aggravated in the dragging process, so that the service life of the tire is influenced. However, the brake valves in the prior art uniformly control the braking of the tires in different rows, and obviously, the effective control cannot be carried out according to actual conditions.

Disclosure of Invention

The invention aims to provide a mitigating joint to solve the defects in the prior art, which can reduce the speed of brake response, better realize the brake cooperativity of each row of axles of a trailer, reduce the loss of tires and prolong the service life of the tires.

The present invention provides a moderator joint comprising:

the joint body is provided with an air inlet, an air outlet and a communication channel for communicating the air inlet and the air outlet;

a gap part is arranged between the baffle plate and the inner side wall of the joint body and is movably arranged in the communicating channel;

the first blocking piece is arranged in the communication channel and is provided with a first abutting part for abutting against the blocking piece;

the pressure relief channel is arranged on the baffle and/or the first blocking piece, so that after the baffle is abutted against the first abutting part, the air outlet is communicated to the air inlet through the pressure relief channel;

and the second blocking piece is arranged in the communication channel, is positioned between the first blocking piece and the air outlet, is provided with a second abutting part for abutting against the blocking piece, and is partially covered on the communication channel positioned at the position of the second abutting part after the blocking piece abuts against the second abutting part.

Furthermore, a through hole communicated with the air inlet and the air outlet is formed in the second blocking piece, a buffering air hole is formed in the blocking piece, and the blocking piece covers the through hole and enables the air inlet and the air outlet to be communicated through the buffering air hole after the blocking piece is abutted against the second abutting portion.

Furthermore, a positioning support part which protrudes inwards and supports the first blocking piece is arranged on the inner side wall of the joint body; the first blocking piece is in clearance fit with the communication channel;

the moderate joint is also provided with a positioning piece which is detachably arranged and fixed on the inner side wall of the joint body, and the positioning piece is abutted against the top of the first blocking piece.

Further, the first blocking piece is provided with an annular supporting part and an annular shoulder part protruding outwards from the annular supporting part, and the annular shoulder part is abutted with the positioning supporting part; the first abutting portion is provided at one end of the annular support portion close to the second blocking member.

Further, the pressure relief channel comprises a buffer air hole arranged on the baffle sheet and/or the pressure relief channel comprises a connecting hole arranged on the first blocking piece.

Furthermore, be provided with the sealing washer constant head tank on the second blockking, be located in the sealing washer constant head tank with the sealing washer of separation blade looks adaptation.

Further, the joint body is provided with an upper body and a lower body which is fixedly connected with the upper body; the communicating channel comprises an upper channel arranged in the upper body and a lower channel arranged in the lower body, and the size of the upper channel is larger than that of the lower channel; the baffle plate is movably arranged in the upper channel, and the second blocking piece is one end of the lower body.

Furthermore, the relaxation joint is also provided with a reducing adapter which is detachably connected and fixed with the joint body, the first end of the reducing adapter is in threaded connection with the joint body, and the second end of the reducing adapter is provided with a switching part which is used for being connected with the air outlet of the brake valve.

A brake valve control assembly comprising the mild joint, a brake valve and a wheel cylinder as described above, the inlet port of the mild joint being in communication with the outlet port of the brake valve, the outlet port of the mild joint being in communication with the brake chamber of the wheel cylinder.

Furthermore, a quick-release joint is arranged between the air outlet of the relaxation joint and the brake cylinder, and the quick-release joint is provided with a shell, a quick-release air inlet, a quick-release air outlet, a quick-release air channel, a one-way tympanic membrane and an air inlet channel which are arranged on the shell;

the quick exhaust air inlet is communicated with an air outlet of the relaxation joint, the quick exhaust air outlet is communicated with an air inlet of the brake cylinder, the quick exhaust air inlet is communicated with the quick exhaust air outlet through an air inlet channel, and the quick exhaust air channel is communicated with the air inlet channel and the outside;

the unidirectional tympanic membrane is arranged in the air inlet channel in a sliding way and blocks the air inlet of the quick exhaust air channel in a braking state so that braking air pressure enters the brake cylinder through the quick exhaust air outlet; and away from the inlet of the fast exhaust air passage after the brake is released.

Compared with the prior art, the invention reduces the transmission speed of air pressure entering the tire with slower response required by the braking by arranging the easing joint between the brake valve and the brake cylinder. This alleviate and connect through setting up the separation blade in inside, reduce pressure transmission channel's size through the separation blade, and then reduce pressure's transfer rate to reduce the speed of brake braking response, thereby avoided the asynchronous condition of front and back row tire brake, the brake cooperativity of realization trailer that can be higher has reduced the loss of tire, has prolonged the life of tire.

Drawings

FIG. 1 is a schematic structural view of a mild joint according to an embodiment of the present invention;

FIG. 2 is an exploded view of FIG. 1;

FIG. 3 is a front view of FIG. 1;

FIG. 4 is a cross-sectional view of FIG. 3 in the direction of A;

FIG. 5 is a schematic structural view of a fitting body in the mild fitting disclosed in the embodiments of the present invention;

FIG. 6 is a cross-sectional view of a fitting body in the mild fitting disclosed in an embodiment of the invention;

FIG. 7 is a schematic view of a first configuration of a first stop in a mild joint according to an embodiment of the present disclosure;

FIG. 8 is a schematic view of a first configuration of a first stop in a mild joint according to an embodiment of the present disclosure;

FIG. 9 is a schematic view of a structure of a blocking piece in the mild connector disclosed in the embodiment of the invention;

FIG. 10 is a schematic structural diagram of a brake valve control assembly according to an embodiment of the present disclosure;

FIG. 11 is an exploded view of FIG. 10;

FIG. 12 is a schematic view of the internal structure of the brake valve control assembly according to the present disclosure;

description of reference numerals: 1-a joint body, 11-an air inlet, 12-an air outlet, 13-a communication channel, 131-an upper channel, 132-a lower channel, 14-a positioning support part, 15-a clamp spring positioning groove, 16-an upper body, 17-a lower body, 2-a baffle plate, 20-a gap part, 21-a buffer air hole, 3-a first blocking piece, 31-a first abutting part, 32-an annular support part, 320-a blocking piece through hole, 321-a pressure relief channel, 33-an annular shoulder part, 4-a second blocking piece, 41-a second abutting part, 42-a sealing ring positioning groove, 6-a sealing ring, 7-a reducing adapter, 71-an adapter part, 100-a relaxation adapter, 200-a quick exhaust adapter, 201-a shell and 202-a quick exhaust air inlet, 203-fast exhaust outlet, 204-fast exhaust channel, 205-one-way tympanic membrane, 206-intake channel.

Detailed Description

The embodiments described below with reference to the drawings are illustrative only and should not be construed as limiting the invention.

As shown in fig. 1-9, the embodiment of the present invention discloses a moderate connector, which comprises a connector body 1, a baffle 2, a first blocking member 3, a pressure relief channel 321 and a second blocking member 4.

The joint body 1 has an air inlet 11, an air outlet 12, and a communication passage 13 communicating the air inlet 11 and the air outlet 12. A gap part 20 is arranged between the baffle plate 2 and the inner side wall of the joint body 1, and the existence of the gap part 20 enables the baffle plate 2 to be movably arranged in the communication channel 13;

the baffle plate 2 is movable in the extending direction of the communicating passage 13 by the pushing action of the air pressure and is movable between the first blocking member 3 and the second blocking member 4. The first blocking member 3 and the second blocking member 4 serve as two stroke limiting members for limiting the moving stroke of the shutter 2 when the shutter 2 moves.

Specifically, the first blocking member 3 is provided in the communication passage 13 and has a first abutting portion 31 for abutting against the shutter 2. The first abutting portion 31 is for abutting against the upper end of the shutter 2.

And a pressure relief channel 321 provided on the baffle 2 and/or the first blocking member 3, so that after the baffle 2 abuts against the first abutting portion 31, the air outlet 12 is communicated to the air inlet 11 through the pressure relief channel 321.

The second blocking member 4 is disposed in the communication channel 13 and located between the first blocking member 3 and the air outlet 12, and has a second abutting portion 41 for abutting against the baffle sheet 2, and after the baffle sheet 2 abuts against the second abutting portion 41, the communication channel 13 located at the position of the second abutting portion 41 is partially covered, that is, the flow area of communication between the air inlet 11 and the air outlet 12 located at the position where the second abutting portion 41 is disposed is reduced. The baffle plate 2 serves as a blocking member that changes the area of the communication passage between the air inlet 11 and the air outlet 12 to change the area of the flow between the air inlet 11 and the air outlet 12.

In the braking process, the braking air pressure from the braking valve enters the communicating channel 13 through the air inlet 11 and finally enters the brake cylinder through the air outlet 12 to brake the corresponding tire, and the braking air pressure can push the blocking piece 2 to move towards the direction of the second blocking piece 4 after entering the communicating channel 13, so that the blocking piece 2 is abutted against the second blocking piece 4. The baffle plate 2 is abutted to the communication channel 13 at the position of the second blocking piece 4 after the second blocking piece 4 is partially covered, so that the area of air pressure circulation between the air inlet 11 and the air outlet 12 is reduced, the speed of air pressure transmission to the brake cylinder is reduced, and the response speed of braking can be effectively reduced. After the braking is released, the air pressure of the wheel cylinder needs to be transmitted into the brake valve for pressure relief, specifically, the air pressure which needs to be unloaded in the wheel cylinder flows towards the air inlet 11 through the air outlet 12, after entering the air outlet 12, the air pressure pushes the blocking piece 2 to move towards the first blocking piece 3, finally, the blocking piece 2 is abutted against the first blocking piece 3, then, the air pressure enters the air inlet 11 through the pressure relief channel 321, and finally, the air pressure enters the brake valve through the air inlet 11.

The relieving connector is arranged between the brake valve and the brake cylinder to relieve the transmission speed of air pressure on the tire needing slower response when the vehicle enters the brake, so that the tire can be prevented from being locked, the brake coordination of each wheel of the trailer can be better realized, the stable brake can be realized, and the loss of the tire is reduced.

Preferably, the second abutting portion 41 may be a limit stop ring provided on a side wall of the communicating channel 13, and a through hole is provided in the middle of the limit stop ring, and the through hole allows air pressure to enter the air outlet 12 through the air inlet 11. The baffle plate 2 is provided with a buffer air hole 21. When the blocking piece 2 moves in the communicating channel 13, the blocking piece 2 moves to abut against the second abutting part 41 and then shields the through hole on the second abutting part 41, so that the air pressure entering from the air inlet 11 can only reach the air outlet 12 through the buffering air hole 21 on the blocking piece 2, thereby changing the cross section of the communicating channel between the air inlet 11 and the air outlet 12 in the air pressure flowing process, and further changing the air pressure transmission speed between the air inlet 11 and the air outlet 12.

The above is only an embodiment, and the second abutting portion 41 may have other structures, for example, the second abutting portion 41 includes a plurality of support pillars circumferentially spaced along an inner sidewall of the communication channel, and the communication channel 13 located at the second abutting portion 41 can be covered after the blocking piece 2 abuts against the second abutting portion 41, so that the transfer speed of the air pressure can be changed, in this embodiment, the blocking piece 2 transfers the air pressure not only through the buffer air hole 21 on the blocking piece 2 but also through a position where the blocking piece 2 does not cover the second abutting portion 41 after the second abutting portion 4 abuts against the blocking piece 2. In addition, in another embodiment, the second abutting portion 41 may be a mesh structure disposed on a sidewall of the communicating channel 13, and the baffle plate 2 abuts on a mesh hole on the second abutting portion 41 after the second abutting portion 41 to cover the portion, so that the air pressure can be transmitted through the uncovered mesh hole. When the second abutting portion 41 is formed in a net shape or when the second abutting portion 41 is provided with a connecting through hole, the buffer air hole 21 in the baffle plate 2 may not be provided.

The purpose of the baffle 2 in this embodiment is to reduce the flow area of the communication channel 13 to reduce the speed at which the air pressure is transmitted from the air outlet 12. And therefore, a structure capable of reducing the transfer rate of the gas pressure in the communication passage 13 can be theoretically substituted as an equivalent. Only compared with the preferred embodiment of the present application, i.e. the solution that the baffle plate 2 only allows the air pressure to be transmitted through the buffer air hole 21 on the baffle plate 2 after closing the through hole on the second blocking member 4, the transmission speed of the air pressure is not well controlled. The air inlet device is set to be ventilated only through the buffer air hole 21 in the baffle plate 2 in the preferred embodiment of the application, so that the ventilated through hole is the only variable, the air inlet device can conveniently control the air pressure transmission speed by changing the aperture of the buffer air hole 21 so as to control the channel area communicated between the air inlet 11 and the air outlet 12, and the adjustment of the air pressure transmission speed by the connector can be well realized.

In this embodiment, the air inlet 11 may be communicated with an air outlet of a trailer brake valve, the air outlet 12 is communicated to a trailer brake cylinder, and brake air pressure generated by the brake valve enters the communication channel 13 through the air inlet 11 and is transferred to a brake air chamber of the brake cylinder through the air outlet 12 to generate braking in the braking process. Owing to set up separation blade 2 and set up buffering gas pocket 21 on the separation blade in this embodiment, when separation blade 2 butts on second butt portion 4, thereby separation blade 2 shutoff the through-hole on second butt portion 4 makes air inlet 11 and gas outlet 12 can only pass through buffering gas pocket 21 on separation blade 2 and communicate, the atmospheric pressure that produces from the brake valve gas outlet just can only enter into the brake wheel cylinder from buffering gas pocket 21 like this, and the aperture of buffering gas pocket 21 is less, consequently the effectual transfer rate that reduces the brake chamber atmospheric pressure that conveys the brake wheel cylinder, the response speed of the braking that this reduction of transfer rate can effectual reduction brake wheel cylinder produced, thereby avoid appearing the tire locking condition that the braking response causes at the excessive speed. The size and the number of the buffer air holes 21 on the baffle plate 2 can be adjusted according to actual needs to achieve different braking effects so as to meet diversified requirements and improve the applicability of the relieving joint.

In the existing trailer system, two rows of axles or three rows of axles are generally arranged at the same time at the rear wheel position of the trailer, the grip force of tires on the axles in different rows is different from the grip force of the ground, and the bearing force borne by the tires on the rear side of the trailer is generally larger, so that the grip force with the ground is also larger than the grip force of the tires on the front side of the trailer. The response speed of braking required in the braking process is different due to the difference of the gripping force of the tires arranged in front and at the back, if the braking speed and the tires with larger gripping force are the same for the tires with smaller ground gripping force, the tires on the front side are easy to drag after the braking is finished, and the abrasion of the tires is aggravated in the dragging process, so that the service life of the tires is influenced. This embodiment is through setting up between brake valve and the brake cylinder and mitigateing the joint in order to slow down the transfer rate that enters into the atmospheric pressure on the tire that brake braking needs slower response, and then reduces the speed that brake braking responded to avoid the asynchronous condition of front and back row tire brake, the brake cooperativity of realization trailer that can be higher has reduced the loss of tire, has prolonged the life of tire.

The air pressure of the brake cylinder needs to be relieved through the brake valve after the brake is released, in order to quickly relieve the pressure, a pressure relief channel 321 is arranged in the embodiment, the pressure relief channel 321 can be arranged on the baffle plate 2 and also can be arranged on the first abutting part 31 or can be arranged on the first abutting part 31 and the second abutting part simultaneously, meanwhile, the gap part 20 arranged between the baffle plate 2 and the communication channel 13 also plays an important pressure relief role before the baffle plate 2 abuts against the first abutting part 31, and the pressure relief air pressure can enter the air inlet 11 through the gap part 20 in the process that the baffle plate 2 moves towards the first abutting part 31 and finally returns to the pressure relief cavity in the brake valve.

Therefore, the gap portion 20 provided between the baffle plate 2 and the inner side wall of the communication channel 13 in the present embodiment not only conveniently realizes that the baffle plate 2 slides up and down along the communication channel 13, but also is a channel loop for quick pressure relief and discharge of the brake chamber of the brake cylinder. During the braking releasing process, the braking air pressure in the braking air chamber of the brake cylinder enters the communicating channel 13 through the air outlet 12 and pushes the baffle plate 2 to move towards the direction close to the first blocking piece 3, the braking air pressure to be released during the moving process can pass through the gap part 20 between the baffle plate 2 and the inner side wall of the communicating channel 13 and then return to the brake valve through the air inlet 11, and finally the braking air pressure is discharged through the brake valve. Meanwhile, the brake air pressure to be relieved can also be transmitted into the brake valve through the through hole on the blocking piece 2, when the blocking piece 2 abuts against the first blocking piece 3, the pressure is relieved through the pressure relief passage 321, and it should be noted that the pressure relief passage 321 participates in the transmission of the pressure to be relieved to the direction of the air inlet 11 before the blocking piece 2 does not abut against the first blocking piece 3.

The pressure release passage 321 may be a buffer air hole 21 provided in the baffle plate 2, or may be a connection hole provided in the first blocking member 3, and the connection hole transmits the pressure transmitted from the air outlet 12 to the air inlet 11 after the first blocking member 3 abuts against the baffle plate 2.

In the present embodiment, the baffle plate 2 can be replaced to adjust the size of the air hole of the buffer air hole 21 and the size of the gap portion 20 between the baffle plate 2 and the inner side wall of the communication channel 13, so that the whole mild connector can be adapted to various requirements, thereby improving the applicability of the mild connector.

In order to facilitate the replacement of the blocking piece 2, in this embodiment, the first blocking piece 3 is detachably mounted and fixed on the joint body 1, so that the first blocking piece 3 is detachably mounted and fixed in the communication channel 13. Specifically, the inner side wall of the joint body 1 is provided with a positioning support portion 14 which protrudes inward and supports the first blocking member 3. The first blocking member 3 is clearance-fitted to the communication passage 13. The mild joint is also provided with a positioning piece which is detachably fixed on the inner side wall of the joint body 1, and the positioning piece is abutted against the top of the first blocking piece 3.

The positioning support part 14 supports and positions the first blocking member 3, and positions the other end of the first blocking member 3 by a positioning part detachably mounted and fixed after the supporting and positioning, so that the first blocking member 3 is fixedly mounted. This embodiment realizes that the first demountable installation who blocks 3 is fixed through the fixed setting element of demountable installation, and then convenient realization the demountable installation of separation blade 2 fixed.

Specifically, in the present embodiment, the first blocking member 3 has an annular supporting portion 32 and an annular shoulder portion 33 protruding outward from the annular supporting portion 32, the annular shoulder portion 33 abuts against the positioning supporting portion 14, and the positioning supporting portion 14 supports and positions the annular supporting portion 32 by supporting and positioning the annular shoulder portion 33. The first abutment portion 31 is provided on the annular support portion 32 near one end of the second blocking member 4. The pressure relief channel 321 can be provided in this embodiment on the annular support 32 or on the connecting through-hole on the annular shoulder 33.

A blocking member penetration hole 320 is provided at a middle position of the annular support portion 32, and the blocking member penetration hole 320 is used for communicating the air inlet 11 and the air outlet 12. After the shutter 2 abuts against the first abutting portion 31, the shutter 2 covers the stopper penetration hole 320. In order to quickly unload the air pressure from the wheel cylinder to release the brake, the brake air pressure of the wheel cylinder needs to enter the air inlet 11 through the air outlet 12 and then enter the brake valve, and the pressure relief work of the wheel cylinder is affected when the blocking piece 2 abuts against the first abutting part 31 to cover the blocking piece penetrating hole 320, so that the influence of brake release caused by the blocking piece 2 covering the blocking piece penetrating hole 320 can be effectively released due to the arrangement of the pressure relief channel 321. In this embodiment, the pressure relief passage 321 includes a plurality of connection holes formed in the sidewall of the annular support portion 32 and penetrating the sidewall of the annular support portion 32. The connecting hole penetrates through the annular support portion 32 along the transverse direction and is communicated with the blocking member through hole 320, and the blocking piece 2 can enter the blocking member through hole 320 through the pressure relief channel 321 to be communicated with the air inlet 11 and the air outlet 12 after covering the blocking member through hole 320 due to the arrangement of the pressure relief channel 321, so that the pressure relief operation of the brake cylinder is conveniently realized. In this embodiment, the plurality of pressure relief channels 321 may be arranged at intervals along the outer sidewall of the annular support portion 32, and the pressure relief channels 321 may be arranged at one end of the upper sidewall of the annular support portion 32 close to the first abutting portion 31.

In another embodiment, the first blocking member 3 may be a net structure, and the pressure relief channel 321 is a mesh that is disposed on the first blocking member 3 after the blocking piece abuts on the first blocking member 3 and is not blocked, or in another embodiment, the first blocking member 3 includes a plurality of support pillars that are disposed at intervals along the circumference of the inner sidewall of the communication channel 13, and a gap formed between the support pillars is the pressure relief channel 321. The supporting column only has a blocking function for the baffle 2.

In this embodiment, the positioning element may be a snap spring disposed on the joint body 1, a snap spring positioning groove 15 adapted to the snap spring is disposed on the inner side wall of the joint body 1, and the snap spring positioning groove 15 is disposed on the upper side of the positioning support portion 14.

Further, a sealing ring positioning groove 42 is formed in the second blocking member 4, and a sealing ring 6 matched with the blocking piece 2 is positioned in the sealing ring positioning groove 42. The sealing ring 6 is provided on the second blocking member 4 for ensuring the sealing performance of the blocking member 2 when the blocking member 2 abuts against the second blocking member 4, so that the air pressure can only be transmitted between the air inlet 11 and the air outlet 12 through the only buffering air hole 21 on the blocking member 2, thereby better controlling the transmission of the air pressure.

Specifically, the joint body 1 is provided with an upper body 16 and a lower body 17 connected and fixed with the upper body 16; the communication passage 13 includes an upper passage 131 provided in the upper body 16 and a lower passage 132 provided in the lower body 17, the upper body 16 having a cross-sectional size larger than that of the lower body 17, the upper passage 131 also having a size larger than that of the lower passage 132; the baffle plate 2 is movable in the upper channel 131, the second blocking piece 4 is one end of the lower body 17, and as the size of the cross section of the lower body 17 is smaller than that of the cross section of the upper body 16, when the lower body 17 and the upper body 16 are coaxially arranged, part of the lower body 17 can extend into the position opposite to the upper channel 131 in the upper body 16 so as to form the second blocking piece 4.

Furthermore, the relaxation joint is also provided with a reducing adapter 7 which is detachably connected and fixed with the joint body 1, the first end of the reducing adapter 7 is in threaded connection with the joint body 1, and the second end of the reducing adapter 7 is provided with a switching part 71 which is used for being connected with the air outlet of the brake valve. The reducing adapter 7 can be convenient realize that the connector body 1 communicates with different brake valves to the suitability that the realization was mitigateed and is connected, the switching portion 71 on the reducing adapter 7 is provided with the external screw thread and communicates with the trachea of being connected with the brake valve and coming with the convenience.

As shown in fig. 10 to 12, in an embodiment of the present invention, a brake valve control assembly is further disclosed, which comprises the mild joint 100, a brake valve and a wheel cylinder, wherein the air inlet 11 of the mild joint 100 is communicated with the air outlet of the brake valve, and the air outlet of the mild joint is communicated with the brake chamber of the wheel cylinder.

During braking of the brake valve control assembly, brake air pressure generated by the brake valve enters the communication channel 13 through the air inlet 11 and is transmitted to a brake air chamber of the brake cylinder through the air outlet 12 so as to generate braking. In the embodiment, because the baffle plate 2 is arranged and the buffer air hole 21 is arranged on the baffle plate, the brake air pressure entering from the air inlet 11 pushes the baffle plate 2 to move towards the air outlet 12, the second abutting part 4 is arranged in front of the air outlet 12, so when the baffle plate 2 abuts against the second abutting part 4 in the process of moving towards the air outlet 12, the baffle plate 2 blocks the through hole on the second abutting part 4, so that the air inlet 11 and the air outlet 12 can only be communicated through the buffer air hole 21 on the baffle plate 2, so that the air pressure generated from the air outlet of the brake valve can only enter the brake cylinder from the buffer air hole 21, the aperture of the buffer air hole 21 is smaller, therefore, the transmission speed of the air pressure of the brake chamber transmitted to the brake cylinder is effectively reduced, the reduction of the transmission speed can effectively reduce the response speed of braking generated by the brake cylinder, thereby avoiding the tire locking condition caused by too fast braking response. Meanwhile, in the process of unloading the brake air pressure, the air pressure to be relieved in the brake cylinder transmitted from the air outlet 12 pushes the baffle plate 2 to move towards the air inlet 11, in the moving process, part of the air pressure to be unloaded enters the air inlet 11 through the gap part 20 between the baffle plate 2 and the inner side wall of the communication channel 13 and then enters the brake valve through the air inlet to be discharged, after the baffle plate 2 completely abuts against the first blocking part 3, the air pressure to be unloaded can be transmitted to the air inlet 11 only through the buffer air hole 21 in the baffle plate 2 and the pressure relief channel 321 in the annular supporting part 32, and then enters the brake valve through the air inlet 11 to be unloaded.

Further, in order to conveniently achieve the unloading of the brake air pressure in the wheel cylinder during the brake release process, a quick release connector 200 is further disposed between the air outlet 12 of the mild connector 100 and the wheel cylinder, and the quick release connector 200 has a housing 201, a quick release air inlet 202, a quick release air outlet 203, a quick release air channel 204, a one-way drum 205 and an air inlet channel 206, which are disposed on the housing 201.

The quick exhaust air inlet 202 is communicated with the air outlet 12 of the mild joint 100, the quick exhaust air outlet 203 is communicated with the air inlet of the brake cylinder, the quick exhaust air inlet 202 is communicated with the quick exhaust air outlet 203 through an air inlet channel 206, and the quick exhaust air channel 204 is communicated with the air inlet channel 206 and the outside;

the unidirectional eardrum 205 is slidably arranged in the air inlet channel 206 and blocks the air inlet of the fast exhaust air channel 204 in a braking state so that brake air pressure enters the brake cylinder through the fast exhaust air outlet 203; and after the brake is released, the air inlet of the fast air exhaust channel 204 is far away to open the fast air exhaust channel 204 so as to rapidly release the air pressure to rapidly release the brake.

The unidirectional eardrum 205 has a body portion for covering and blocking the fast exhaust gas channel 204 during braking, and an oblique guide portion provided at an edge of the body portion, the oblique guide portion enabling the air pressure to move in one direction only through the air inlet 11 to the air outlet 12.

The construction, features and functions of the present invention are described in detail in the embodiments illustrated in the drawings, which are only preferred embodiments of the present invention, but the present invention is not limited by the drawings, and all equivalent embodiments modified or changed according to the idea of the present invention should fall within the protection scope of the present invention without departing from the spirit of the present invention covered by the description and the drawings.