CN202703563U - Trailer advanced braking system for tractor - Google Patents
Trailer advanced braking system for tractor Download PDFInfo
- Publication number
- CN202703563U CN202703563U CN 201220360330 CN201220360330U CN202703563U CN 202703563 U CN202703563 U CN 202703563U CN 201220360330 CN201220360330 CN 201220360330 CN 201220360330 U CN201220360330 U CN 201220360330U CN 202703563 U CN202703563 U CN 202703563U
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- valve
- brake
- outlet
- tractor
- pedal
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- Withdrawn - After Issue
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Abstract
The utility model relates to a trailer advanced braking system for a tractor. The system comprises an air pump, an unloading valve, an air reservoir, a dual-line brake valve, a single-line brake valve, an air supply joint, a single pipeline joint, a control joint, a two-position three-way electromagnetic valve, a pedal contact switch, a brake pedal, and a tractor brake cylinder. The outlet of the air pump is connected with the inlet of the unloading valve; and the outlet of the unloading valve is connected with the air reservoir. The outlets of the air reservoir are divided into four ones; a first path of outlet is connected with the air supply joint; a second path of outlet is connected with the inlet of the dual-line brake valve; a third path of outlet is connected with the inlet of the single-line brake valve; and a fourth path of outlet is connected with the inlet of the two-position three-way electromagnetic valve. Besides, the outlet of the two-position three-way electromagnetic valve is connected with a pneumatic control port of the dual-line brake valve and the two-position three-way electromagnetic valve is connected with the pedal contact switch by a line; and the brake pedal, the pedal contact switch and the brake cylinder are connected. When braking is carried out on the tractor and the brake pedal is pressed, the pedal contact switch is firstly touched, so that the trailer can receive the braking signal in advance to realize the advanced active braking function of the trailer.
Description
Technical field
The utility model belongs to the trac. field, relates to the more front brake system of a kind of used with tractor trailer.
Background technology
At present, the trac. main frame adopts hydraulic braking mostly both at home and abroad, and the trailer brake system that trac. disposes then adopts the gas braking mostly.Consistent with trac. main frame brake coordination in order to guarantee trailer braking protection valve, the manipulation of trailer air braking system is to utilize the hydraulic oil of trac. travelling brake system to control.On the one hand because the compressibility of air, the foundation of pressure and releasing are all slower, tractor hydraulic brake response speed is very fast again on the other hand, it is longer to cause trailer braking protection valve to lag behind the braking time of trac., even increased more front device at trailer, also be difficult to make trailer and tractor braking to shift to an earlier date synchronously or a little, thereby the easy push tractor of trailer, potential safety hazard appears.In order to overcome this shortcoming, be necessary to develop the more front brake system of a kind of used with tractor trailer, can realize the more front braking function of trailer at trac., to satisfy the needs of wheel-tire tractor transport unit.
The utility model content
The purpose of this utility model is to provide a kind of used with tractor trailer more front brake system, and when making tractor braking, trailer can obtain speed-slackening signal in advance, makes the more front main frame braking of trailer, improves the braking reliability of wheel-tire tractor trailer unit.
The technical solution of the utility model is: the more front brake system of used with tractor trailer comprises: air pump, unloader valve, air receiver, dual circuit brake valve, single-pipeline brake activation valve, air connector, single-pipeline joint, control joint, two-bit triplet electromagnetic valve, pedal contact switch, brake pedal, tractor braking oil cylinder; The air pump outlet is connected with the unloader valve import, and the unloader valve outlet is connected with air receiver; The air receiver outlet divides four the tunnel, and the first via connects air connector, and the second the tunnel connects the dual circuit brake valve import, and Third Road connects the import of single-pipeline brake activation valve, and the four the tunnel connects the import of two-bit triplet electromagnetic valve; The two-bit triplet electromagnetic valve outlet connects dual circuit brake valve air pressure control mouth; The electromagnetism plug of two-bit triplet electromagnetic valve is connected with the pedal contact switch by circuit, and the pedal contact switch is connected with brake pedal, and brake pedal is connected with the tractor braking oil cylinder.
Dual circuit brake valve has two-way outlet, and the first via connects the control joint, and the second the tunnel connects single-pipeline brake activation valve control mouth; The outlet of single-pipeline brake activation valve connects the single-pipeline joint.
Tractor braking oil cylinder braking oil content three tunnel out, the first via connects the left drg of trac., and the second the tunnel connects the right drg of trac., and Third Road connects dual circuit brake valve fluid control mouth.
The utility model can reach following beneficial effect after adopting technique scheme: when trac. is braked in the process of moving, in the process that depresses the tractor braking pedal, touch pedal contact switch at first, trailer braking valve can be received trac. main frame speed-slackening signal in advance by the two-bit triplet electromagnetic valve, trailer is braked in advance, make again brake noise inflow tractor brake enforcement braking in the tractor braking oil cylinder, thereby trailer is braked in advance, realize the more front main frame braking function of trailer.
Description of drawings
Fig. 1 is the structure connection diagram of the more front brake system of the utility model used with tractor trailer.
The specific embodiment
Below by accompanying drawing the utility model is further described: as shown in Figure 1, the more front brake system of used with tractor trailer comprises: air pump 1, unloader valve 2, air receiver 3, dual circuit brake valve 4, single-pipeline brake activation valve 5, air connector 6, single-pipeline joint 7, control joint 8, two-bit triplet electromagnetic valve 9, pedal contact switch 10, brake pedal 11, tractor braking oil cylinder 12; Air pump 1 outlet is connected with unloader valve 2 imports, and unloader valve 2 outlets are connected with air receiver 3; Air receiver 3 outlets divide four the tunnel, and the first via connects air connector 6, the second tunnel and connects dual circuit brake valve 4 imports, and Third Road connects 5 imports of single-pipeline brake activation valve, and the four the tunnel connects 9 imports of two-bit triplet electromagnetic valve; 9 outlets of two-bit triplet electromagnetic valve connect dual circuit brake valve 4 air pressure control mouth; The electromagnetism plug of two-bit triplet electromagnetic valve 9 is connected with pedal contact switch 10 by circuit, and pedal contact switch 10 is connected with brake pedal 11, and brake pedal 11 is connected connection with the tractor braking oil cylinder.
Dual circuit brake valve 4 has two-way outlet, and the first via connects control joint 8, the second tunnel and connects single-pipeline brake activation valve 5 control mouths; 5 outlets of single-pipeline brake activation valve connect single-pipeline joint 7.
Tractor braking oil cylinder 12 braking oil content three tunnel out, the first via connect the left drg 13, the second tunnel of trac. and connect the right drg 14 of trac., and Third Road connects dual circuit brake valve 4 fluid control mouths.
In the trac. driving process, pressurized air in the air pump 1 enters air receiver 3 through unloader valve 2, make the certain operation pressure of air receiver 3 interior maintenances, air connector 6 is to the inflation of trailer air receiver, and pedal contact switch 10 is connected, 9 energisings of two-bit triplet electromagnetic valve, make air receiver 3 obstructed to the gas circuit of dual circuit brake valve 4, the pressurized air in the air receiver 3 can not remove to open dual circuit brake valve 4 by electromagnetic valve 9,8 stuffiness of control joint, single-pipeline brake activation valve 5 is opened, 7 ventilations of single-pipeline joint; When chaufeur need to be braked, depress the tractor braking pedal, elder generation's touch pedal contact switch 10, pedal contact switch 10 is disconnected, 9 outages of two-bit triplet electromagnetic valve, air receiver 3 is connected to the gas circuit of dual circuit brake valve 4, pressure air in the air receiver 3 is controlled mouth by two-bit triplet electromagnetic valve 9 to dual circuit brake valve 4 air pressure, dual circuit brake valve 4 is opened, single-pipeline brake activation valve 5 is closed, 7 stuffiness of single-pipeline joint, 8 ventilations of control joint, brake system on the trailer begins braking, steps on tractor braking pedal 11 downwards again, and the switch valve in the brake pump is opened, pressure oil in the tractor braking oil cylinder 12 has two-way to flow to the left drg 13 of trac., right drg 14 goes to implement the braking of trac., also have one the road to dual circuit brake valve 4 fluid control mouths, control dual circuit brake valve 4 continues to open, and makes the brake system on the trailer continue braking.Thereby when being implemented in tractor braking, trailer braking valve can be received the tractor braking signal in advance by two-bit triplet electromagnetic valve 9, and trailer is moved in advance, realizes the more front braking of trailer.This security of system is reliable, and effectively having solved for a long time, the trailer compression air brake lags behind the problem that tractor hydraulic is braked.
Claims (3)
1. the more front brake system of used with tractor trailer comprises: air pump (1), unloader valve (2), air receiver (3), dual circuit brake valve (4), single-pipeline brake activation valve (5), air connector (6), single-pipeline joint (7), control joint (8), two-bit triplet electromagnetic valve (9), pedal contact switch (10), brake pedal (11), tractor braking oil cylinder (12); It is characterized in that: air pump (1) outlet is connected with unloader valve (2) import, and unloader valve (2) outlet is connected with air receiver (3); Air receiver (3) outlet divides four the tunnel, and the first via connects air connector (6), and the second the tunnel connects dual circuit brake valve (4) import, and Third Road connects single-pipeline brake activation valve (5) import, and the four the tunnel connects two-bit triplet electromagnetic valve (9) import; Two-bit triplet electromagnetic valve (9) outlet connects dual circuit brake valve (4) air pressure control mouth; The electromagnetism plug of two-bit triplet electromagnetic valve (9) is connected with pedal contact switch (10) by circuit, and pedal contact switch (10) is connected with brake pedal (11), and brake pedal (11) is connected 12 with the tractor braking oil cylinder) connect.
2.. the more front brake system of used with tractor trailer according to claim 1 is characterized in that: dual circuit brake valve (4) has two-way outlet, the first via connects control joint (8), and the second the tunnel connects single-pipeline brake activation valve (5) control mouth; Single-pipeline brake activation valve (5) outlet connects single-pipeline joint (7).
3. the more front brake system of used with tractor trailer according to claim 1, it is characterized in that: tractor braking oil cylinder (12) braking oil content three tunnel out, the first via connects the left drg of trac. (13), the second the tunnel connects the right drg of trac. (14), and Third Road connects dual circuit brake valve (4) fluid control mouth.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220360330 CN202703563U (en) | 2012-07-25 | 2012-07-25 | Trailer advanced braking system for tractor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220360330 CN202703563U (en) | 2012-07-25 | 2012-07-25 | Trailer advanced braking system for tractor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202703563U true CN202703563U (en) | 2013-01-30 |
Family
ID=47583892
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220360330 Withdrawn - After Issue CN202703563U (en) | 2012-07-25 | 2012-07-25 | Trailer advanced braking system for tractor |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202703563U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102745184A (en) * | 2012-07-25 | 2012-10-24 | 第一拖拉机股份有限公司 | Trailer ahead braking system for tractor |
-
2012
- 2012-07-25 CN CN 201220360330 patent/CN202703563U/en not_active Withdrawn - After Issue
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102745184A (en) * | 2012-07-25 | 2012-10-24 | 第一拖拉机股份有限公司 | Trailer ahead braking system for tractor |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20130130 Effective date of abandoning: 20140618 |
|
| RGAV | Abandon patent right to avoid regrant |