CN201992123U

CN201992123U - Matching valve for brake system of heavy truck

Info

Publication number: CN201992123U
Application number: CN201020674333XU
Authority: CN
Inventors: 乔跃平; 叶新年; 王�华; 王安芝; 刘永磊
Original assignee: SHENGLI BRAKE CO Ltd WUHU
Current assignee: SHENGLI BRAKE CO Ltd WUHU
Priority date: 2010-12-22
Filing date: 2010-12-22
Publication date: 2011-09-28
Anticipated expiration: 2020-12-22

Abstract

The utility model discloses a matching valve for the brake system of a heavy truck, comprising an upper shell assembly (1) and a lower shell (7), wherein thee upper shell assembly (1) is provided with an air inlet (14), and the lower shell (7) is provided with an air outlet; the matching valve is further provided with an exhaust cover assembly (9), and the exhaust cover assembly (9) is provided with an exhaust port (17); a piston assembly (5) and an exhaust valve core (18) are installed in the matching valve, and a returning spring (3) is installed between the upper shell assembly (1) and the piston assembly (5); the exhaust valve core (18) is in cooperation with the valve port on the lower shell (7) communicated with the exhaust port (17). By use of the technical scheme, the brake force of vehicle front axle is reduced in incomplete brake, the brake performance of whole vehicle is improved when braking to reduce the speed to a low point by adjusting the ratio of input pressure to output pressure, thus the brake performance of the whole vehicle is improved; synchronously, the matching valve plays a role of the quick release valve of the brake air chamber.

Description

A kind of heavy truck braking system coupling valve

Technical field

The utility model belongs to the technical field of heavy truck pneumatic control system, relates to the technology of this control system delivery air device, and more particularly, the utility model relates to a kind of heavy truck braking system coupling valve.

Background technique

In the prior art, the braking ability of heavy truck braking system coupling valve is not high enough, and its structure is reasonable inadequately and compact.

The model utility content

Problem to be solved in the utility model provides a kind of heavy truck braking system coupling valve, its objective is the braking ability that improves car load.

To achieve these goals, the technological scheme taked of the utility model is:

Heavy truck braking system coupling valve provided by the utility model, comprise upper shell assembly and lower shell body, on the upper shell assembly, establish suction port, on lower shell body, set out gas port, described coupling valve is established the exhaust cap assembly, establishes relief opening on described exhaust cap assembly; In described coupling valve, establish piston assembly and exhaust plug, between described upper shell assembly and piston assembly, establish return spring; The valve port that leads to relief opening on described exhaust plug and the lower shell body forms and cooperates.

Establish adjustment sheet between described return spring and the described upper shell assembly; Establish the adjustment packing ring between described return spring and the described piston assembly.

Described exhaust cap assembly is fastenedly connected at described lower shell body by screw and packing ring.

Seal by O-ring seals between described upper shell assembly and the lower shell body.

Seal by O-ring seals between described exhaust cap assembly and the lower shell body.

Be fastenedly connected by screw between described upper shell assembly and the lower shell body.

Described lower shell body is fixing on mounting plate by double-screw bolt.

The utility model adopts technique scheme, is used for the non-braking force that reduces automobile front axle when braking fully, by regulating the ratio of input and output pressure, improves the braking ability of car load when braking deceleration is low to speed, improves the braking ability of car load; The coupling valve also plays the brake chamber quick release valve simultaneously.

Description of drawings

Below expressed content of each width of cloth accompanying drawing of this specification and the mark among the figure are made brief description:

Fig. 1 is a structure cross-sectional schematic of the present utility model;

Fig. 2 looks schematic representation for the left side of structure shown in Figure 1.

Be labeled as among the figure:

1, upper shell assembly, 2, adjustment sheet, 3, return spring, 4, adjust packing ring, 5, piston assembly, 6, O-ring seals, 7, lower shell body, 8, O-ring seals, 9, the exhaust cap assembly, 10, screw, 11, packing ring, 12, screw, 13, double-screw bolt, 14, suction port, 15, the air outlet, 16, air outlet, 17, relief opening, 18, exhaust plug.

Embodiment

Contrast accompanying drawing below, by description to embodiment, to effect and working principle, the manufacturing process of the mutual alignment between the shape of embodiment of the present utility model such as related each member, structure, the each several part and annexation, each several part and manipulate method etc., be described in further detail, inventive concept of the present utility model, technological scheme had more complete, accurate and deep understanding to help those skilled in the art.

The of the present utility model structure expressed as Fig. 1, Fig. 2 for a kind of heavy truck braking system coupling valve, comprises upper shell assembly 1 and lower shell body 7, establishes suction port 14 on upper shell assembly 1, sets out gas port 15, air outlet 16 on lower shell body 7.

SLB coupling valve interconnects by inlet, outlet screw thread and braking line, in addition can be fixing on mounting plate by the M8 double-screw bolt of double-screw bolt 13.

In order to solve the problem that exists at the described present known technology of this specification background technique part and to overcome its defective, realize the goal of the invention of the braking ability of raising car load, the technological scheme that the utility model is taked is:

Heavy truck braking system coupling valve provided by the utility model, described coupling valve is established exhaust cap assembly 9, establishes relief opening 17 on described exhaust cap assembly 9; In described coupling valve, establish piston assembly 5 and exhaust plug 18, between described upper shell assembly 1 and piston assembly 5, establish return spring 3; The valve port that leads to relief opening 17 on described exhaust plug 18 and the lower shell body 7 forms and cooperates.

Adopt technique scheme, be used for the non-braking force that reduces automobile front axle when braking fully,, when braking deceleration is low to speed, improve the braking ability of car load, improve the braking ability of car load by regulating the ratio of input and output pressure; The coupling valve also plays the brake chamber quick release valve simultaneously.

Concrete annexation is:

Establish adjustment sheet 2 between return spring 3 described in the utility model and the described upper shell assembly 1; Establish between described return spring 3 and the described piston assembly 5 and adjust packing ring 4.

Above-described exhaust cap assembly 9 is fastenedly connected at described lower shell body 7 by screw 10 and packing ring 11.

Seal by O-ring seals 6 between described upper shell assembly 1 and the lower shell body 7.

Seal by O-ring seals 8 between described exhaust cap assembly 9 and the lower shell body 7.

Be fastenedly connected by screw 12 between described upper shell assembly 1 and the lower shell body 7.

Described lower shell body 7 is fixing on mounting plate by double-screw bolt 13.

Purposes of the present utility model is:

The coupling valve is used for the non-braking force that reduces automobile front axle when braking fully, promptly by regulating the ratio of input and output pressure, improves the braking ability of car load when braking deceleration is low.

The coupling valve also plays the brake chamber quick release valve simultaneously.

Working principle of the present utility model:

During braking, to suction port 14 input air pressures, piston assembly 5 moves down, and exhaust plug 18 is sealed relief opening 17, goes up valve open simultaneously, and the gap that air communication is crossed around the valve enters air outlet 15 and air outlet 16;

During brake off, the Pneumatic pipe cleaner of suction port 14 ends is crossed brake valve and is emitted, and the air pressure of air outlet 15 and air outlet 16 will push away in the piston assembly 5, opens relief opening 17, and Pneumatic pipe cleaner is crossed relief opening 17 and entered in the atmosphere.

When suction port 14 pressure were lower than 0.41MPa, the pressure of air outlet 15 and air outlet 16 was lower than suction port 14 pressure;

When suction port 14 pressure were higher than 0.41MPa, the pressure of air outlet 15 and air outlet 16 equated with suction port 14 pressure, promptly by regulating the ratio of input and output pressure, improves the braking ability of car load.

In conjunction with the accompanying drawings the utility model has been carried out exemplary description above; obviously the utility model specific implementation is not subjected to the restriction of aforesaid way; as long as adopted the improvement of the various unsubstantialities that method of the present utility model design and technological scheme carry out; or design of the present utility model and technological scheme are directly applied to other occasion without improving, all within protection domain of the present utility model.

Claims

1. a heavy truck braking system is mated valve, comprise upper shell assembly (1) and lower shell body (7), on upper shell assembly (1), establish suction port (14), on lower shell body (7), set out gas port (15,16), it is characterized in that: described coupling valve is established exhaust cap assembly (9), establishes relief opening (17) on described exhaust cap assembly (9); In described coupling valve, establish piston assembly (5) and exhaust plug (18), between described upper shell assembly (1) and piston assembly (5), establish return spring (3); The valve port that leads to relief opening (17) on described exhaust plug (18) and the lower shell body (7) forms and cooperates.

2. according to the described heavy truck braking system coupling of claim 1 valve, it is characterized in that: establish adjustment sheet (2) between described return spring (3) and the described upper shell assembly (1); Establish between described return spring (3) and the described piston assembly (5) and adjust packing ring (4).

3. according to the described heavy truck braking system coupling of claim 1 valve, it is characterized in that: described exhaust cap assembly (9) is fastenedly connected in described lower shell body (7) by screw (10) and packing ring (11).

4. according to the described heavy truck braking system coupling of claim 1 valve, it is characterized in that: seal by O-ring seals (6) between described upper shell assembly (1) and the lower shell body (7).

5. according to the described heavy truck braking system coupling of claim 1 valve, it is characterized in that: seal by O-ring seals (8) between described exhaust cap assembly (9) and the lower shell body (7).

6. according to the described heavy truck braking system coupling of claim 1 valve, it is characterized in that: be fastenedly connected by screw (12) between described upper shell assembly (1) and the lower shell body (7).

7. according to the described heavy truck braking system coupling of claim 1 valve, it is characterized in that: described lower shell body (7) is fixing on mounting plate by double-screw bolt (13).