CN201989784U - Differential relay valve of heavy-duty truck brake system - Google Patents
Differential relay valve of heavy-duty truck brake system Download PDFInfo
- Publication number
- CN201989784U CN201989784U CN2010206742498U CN201020674249U CN201989784U CN 201989784 U CN201989784 U CN 201989784U CN 2010206742498 U CN2010206742498 U CN 2010206742498U CN 201020674249 U CN201020674249 U CN 201020674249U CN 201989784 U CN201989784 U CN 201989784U
- Authority
- CN
- China
- Prior art keywords
- lower house
- valve
- brake system
- differential relay
- relay valve
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
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Abstract
The utility model discloses a differential relay valve of a heavy-duty truck brake system, which is characterized in that a control air port is arranged on an upper shell, an exhaust cover assembly is arranged below a lower shell and is tightly connected with the lower shell, and an exhaust port is arranged on the exhaust cover assembly; a control piston and a relay piston are arranged in the upper shell; a valve skeleton assembly is arranged in the lower shell; the relay piston is in contact with the valve skeleton assembly; and a spool on the valve skeleton assembly is matched with a valve port which is communicated to the exhaust port. By adopting the technical scheme, since the differential relay valve is arranged in the entire brake system, the reduction of inflating and deflating time of a large-capacity brake chamber arranged at the end of a long pipe line is facilitated and the braking performance of the entire truck is improved; since most parts in the differential relay valve are plastic parts and rubber parts, the productivity and the performance of the product are greatly improved and purchase costs are reduced; and a foundation is laid for the large-scale equipment of all kinds of vehicles.
Description
Technical field
The utility model belongs to the technical field of heavy duty truck, relates to heavy duty truck pneumatic control system delivery air device, and more particularly, the utility model relates to a kind of differential relay valve of heavy duty truck brake system.
Background technology
In the prior art, the deceleration and stopping performance of the differential relay valve of heavy duty truck brake system can not meet the demands, and its structure is compact inadequately and reasonable.
The utility model content
Problem to be solved in the utility model provides a kind of differential relay valve of heavy duty truck brake system, its objective is the deceleration and stopping performance that improves car load.
To achieve these goals, the technical scheme taked of the utility model is:
The differential relay valve of heavy duty truck brake system provided by the utility model, comprise upper shell, lower house and be located at admission port and air extractor duct on the lower house, establish the control gas port on the described upper shell, the below of described lower house is established the exhaust cap assembly and is fastenedly connected with described lower house, establishes exhausr port on the described exhaust cap assembly; In described upper shell, establish control plunger and relay piston; Establish the valve frame assembly in the described lower house; Described relay piston contacts with described valve frame assembly; Spool on the described valve frame assembly cooperates with the valve port that leads to described exhausr port.
Described exhaust cap assembly is fastened on the described lower house by Cross Recess Head Screw and packing ring.
Described differential relay valve is fastenedly connected by hexagonal bar iron and packing ring and adapter plate.
Establish pull back spring between described valve frame assembly and lower house, described pull back spring is connected with described lower house by spring perch.
Establish lining in described lower house, described valve frame assembly is located at described lining.
Seal by O-ring seals between described lining and the lower house.
Described lining carries out axial location by the hole with back-up ring.
Seal by O-ring seals between described upper shell and the lower house.
Be provided with O-ring seals between described control plunger and the relay piston.
Seal by O-ring seals between described spring perch and the lower house.
The utility model adopts technique scheme, and differential relay valve is set in whole brake system, helps shortening being positioned at than the filling of the big volume brake repair room of long pipe runs end, deflation time, has improved the deceleration and stopping performance of car load; Big multiple component adopts Plastic Parts, Rubber Parts in the utility model, has improved the production capacity and the performance of product greatly, has reduced purchase cost; For various vehicle equipment in enormous quantities lays the foundation.
Description of drawings
Below expressed content of each width of cloth accompanying drawing of this specification sheets and the mark among the figure are made brief description:
Fig. 1 is a structural representation of the present utility model;
Fig. 2 looks scheme drawing for the left side of structure shown in Figure 1.
Be labeled as among the figure:
1, upper shell, 2, control plunger, 3, O-ring seals, 4, O-ring seals, 5, relay piston, 6, O-ring seals, 7, hole back-up ring, 8, O-ring seals, 9, O-ring seals, 10, lining, 11, the valve frame assembly, 12, lower house, 13, spring perch, 14, pull back spring, 15, O-ring seals, 16, O-ring seals, 17, the exhaust cap assembly, 18, Cross Recess Head Screw, 19, packing ring, 20, hexagonal bar iron, 21, packing ring, 22, admission port, 23, air extractor duct, 24, air extractor duct, 25, exhausr port, 26, the control gas port.
The specific embodiment
Contrast accompanying drawing below, by description to embodiment, to effect and principle of work, the manufacturing process of the mutual alignment between the shape of the specific 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, technical 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, the utility model is a kind of differential relay valve of heavy duty truck brake system, comprises upper shell 1, lower house 12 and is located at admission port 22 on the lower house 12 and air extractor duct 23, air extractor duct 24.
In order to solve the problem that exists at the described present known technology of this specification sheets background technology part and to overcome its defective, realize the goal of the invention of the deceleration and stopping performance of raising car load, the technical scheme that the utility model is taked is:
The differential relay valve of heavy duty truck brake system provided by the utility model, establish control gas port 26 on the described upper shell 1, the below of described lower house 12 is established exhaust cap assembly 17 and is fastenedly connected with described lower house 12, establishes exhausr port 25 on the described exhaust cap assembly 17; In described upper shell 1, establish control plunger 2 and relay piston 5; Establish valve frame assembly 11 in the described lower house 12; Described relay piston 5 contacts with described valve frame assembly 11; Spool on the described valve frame assembly 11 cooperates with the valve port that leads to described exhausr port 25.
Adopt technique scheme, differential relay valve is set in whole brake system, help shortening and be positioned at, improved the deceleration and stopping performance of car load than the filling of the big volume brake repair room of long pipe runs end, deflation time; Big multiple component adopts Plastic Parts, Rubber Parts in the utility model, has improved the production capacity and the performance of product greatly, has reduced purchase cost; For various vehicle equipment in enormous quantities lays the foundation.
Its concrete structure is:
The differential relay valve of SL interconnects by inlet, outlet screw thread and brake piping, and it is fixing on adapter plate to choose two hexagonal bar irons 20 in addition wantonly.
Exhaust cap assembly 17 described in the utility model is fastened on the described lower house 12 by Cross Recess Head Screw 18 and packing ring 19.
Described differential relay valve is fastenedly connected with adapter plate by hexagonal bar iron 20 and packing ring 21.
Establish pull back spring 14 between above-described valve frame assembly 11 and lower house 12, described pull back spring 14 is connected with described lower house 12 by spring perch 13.
Establish lining 10 in described lower house 12, described valve frame assembly 11 is located at described lining 10.
Seal by O-ring seals 8 between described lining 10 and the lower house 12.
Described lining 10 carries out axial location by the hole with back-up ring 7.
Seal by O-ring seals 6 between described upper shell 1 and the lower house 12.
Be provided with O-ring seals 9 between described control plunger 2 and the relay piston 5.
Seal by O-ring seals 15 between described spring perch 13 and the lower house 12.
Described control plunger 2 is by realizing sealing between O-ring seals 3 and the upper shell 1.
Described relay piston 5 is by realizing sealing between O-ring seals 4 and the upper shell 1.
Spool on the described valve frame assembly 11 is by realizing sealing between O-ring seals 15 and the lower house 12.
Described exhaust cap assembly 17 is by realizing sealing between O-ring seals 16 and the lower house 12.
Purposes of the present utility model:
The brake application by spring air chamber produced extra-push model when differential relay valve was mainly used in and prevents that main brake and braking during standstill from handling simultaneously, with the unlikely overload of protection compressed air brake cylinder, played brake application by spring air chamber amplifying relay valve and rapid release valve simultaneously.
Principle of work of the present utility model:
Glancing impact under the pressure effect of control gas port 26, promotes piston and moves down respectively, and with valve open, the gas that comes out from air receiver flows to the compressed air brake cylinder that air extractor duct connects, thereby produces braking;
After removing control gas port air pressure, piston moves under gas pressure, opens exhausr port, and the air pressure in the compressed air brake cylinder will be by the exhausr port exhaust to atmosphere.
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 technical scheme carry out; or design of the present utility model and technical scheme are directly applied to other occasion without improving, all within protection domain of the present utility model.
Claims (10)
1. the differential relay valve of a heavy duty truck brake system, comprise upper shell (1), lower house (12) and be located at admission port (22) and air extractor duct (23,24) on the lower house (12), it is characterized in that: establish control gas port (26) on the described upper shell (1), the below of described lower house (12) is established exhaust cap assembly (17) and is fastenedly connected with described lower house (12), establishes exhausr port (25) on the described exhaust cap assembly (17); In described upper shell (1), establish control plunger (2) and relay piston (5); Establish valve frame assembly (11) in the described lower house (12); Described relay piston (5) contacts with described valve frame assembly (11); Spool on the described valve frame assembly (11) cooperates with the valve port that leads to described exhausr port (25).
2. according to the differential relay valve of the described heavy duty truck brake system of claim 1, it is characterized in that: described exhaust cap assembly (17) is fastened on the described lower house (12) by Cross Recess Head Screw (18) and packing ring (19).
3. according to the differential relay valve of the described heavy duty truck brake system of claim 1, it is characterized in that: described differential relay valve is fastenedly connected with adapter plate by hexagonal bar iron (20) and packing ring (21).
4. according to the differential relay valve of the described heavy duty truck brake system of claim 1, it is characterized in that: establish pull back spring (14) between described valve frame assembly (11) and lower house (12), described pull back spring (14) is connected with described lower house (12) by spring perch (13).
5. according to the differential relay valve of the described heavy duty truck brake system of claim 1, it is characterized in that: establish lining (10) in described lower house (12), described valve frame assembly (11) is located at described lining (10).
6. according to the differential relay valve of the described heavy duty truck brake system of claim 5, it is characterized in that: seal by O-ring seals (8) between described lining (10) and the lower house (12).
7. according to the differential relay valve of the described heavy duty truck brake system of claim 5, it is characterized in that: described lining (10) carries out axial location by the hole with back-up ring (7).
8. according to the differential relay valve of the described heavy duty truck brake system of claim 1, it is characterized in that: seal by O-ring seals (6) between described upper shell (1) and the lower house (12).
9. according to the differential relay valve of the described heavy duty truck brake system of claim 1, it is characterized in that: be provided with O-ring seals (9) between described control plunger (2) and the relay piston (5).
10. according to the differential relay valve of the described heavy duty truck brake system of claim 4, it is characterized in that: seal by O-ring seals (15) between described spring perch (13) and the lower house (12).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010206742498U CN201989784U (en) | 2010-12-22 | 2010-12-22 | Differential relay valve of heavy-duty truck brake system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010206742498U CN201989784U (en) | 2010-12-22 | 2010-12-22 | Differential relay valve of heavy-duty truck brake system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201989784U true CN201989784U (en) | 2011-09-28 |
Family
ID=44666282
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010206742498U Expired - Fee Related CN201989784U (en) | 2010-12-22 | 2010-12-22 | Differential relay valve of heavy-duty truck brake system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201989784U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102069791A (en) * | 2010-12-22 | 2011-05-25 | 芜湖盛力制动有限责任公司 | Differential relay valve of heavy truck brake system |
| CN104192135A (en) * | 2014-09-22 | 2014-12-10 | 昌通科技有限公司 | Delong relay valve |
-
2010
- 2010-12-22 CN CN2010206742498U patent/CN201989784U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102069791A (en) * | 2010-12-22 | 2011-05-25 | 芜湖盛力制动有限责任公司 | Differential relay valve of heavy truck brake system |
| CN104192135A (en) * | 2014-09-22 | 2014-12-10 | 昌通科技有限公司 | Delong relay valve |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20110928 Termination date: 20121222 |