CN204323315U - Trailer and braking air-channel system thereof - Google Patents
Trailer and braking air-channel system thereof Download PDFInfo
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- CN204323315U CN204323315U CN201420823756.1U CN201420823756U CN204323315U CN 204323315 U CN204323315 U CN 204323315U CN 201420823756 U CN201420823756 U CN 201420823756U CN 204323315 U CN204323315 U CN 204323315U
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- Valves And Accessory Devices For Braking Systems (AREA)
Abstract
The utility model provides a kind of trailer and braking air-channel system thereof, and described braking air-channel system comprises supply air line, braking gas circuit, emergency relay valve, air receiver, brake cylinder; Supply air line connects air receiver through emergency relay valve, emergency relay valve receives speed-slackening signal by braking gas circuit, emergency relay valve cuts off the path of described supply air line to air receiver when receiving speed-slackening signal, and the gas in air receiver is passed to brake cylinder by pipeline; Described braking air-channel system also comprises a unidirectional circuit, and described unidirectional circuit is connected between supply air line and described air receiver, and unidirectional circuit is from supply air line to one-way conduction on the direction of air receiver.The utility model can continue to air receiver make-up gas when trailer braking protection valve, solve the problem of air receiver braking pressure deficiency when trailer is in braking mode for a long time, the braking pressure in air receiver is made to remain at suitable scope, the travel safety of effective raising trailer, avoids the generation of Peril Incident.
Description
Technical field
The utility model relates to vehicular field, particularly a kind of trailer and braking air-channel system thereof.
Background technology
Current domestic superimposed trailer be all according in GB GB12676-1999 to the regulation of trailer air braking system, adopt split brake system, namely trailer brake system is dual circuit.Wherein a red pipeline is supply air line, and tractor truck is filled with pressure gas in trailer air receiver by this root pipeline and emergency relay valve; Another yellow pipeline is braking gas circuit, during artic service brake, tractor-trailer valve transmits pressure gas and speed-slackening signal by this pipeline to trailer emergency relay valve, trailer emergency relay valve passes to brake cylinder the pressure gas be stored in trailer air receiver by brake piping after obtaining the pressure gas speed-slackening signal that main frame passes over, and implements braking.
This brake system is in service braking operation, and trailer emergency relay valve has cut off the passage that supply air line is connected with air receiver, and supply air line is not inflated in trailer air receiver by emergency relay valve.When the compression brake gas be stored in trailer air receiver passes to brake cylinder enforcement braking by pipeline, the braking pressure be stored in air receiver can reduce; Especially vehicle is at mountain area length distance descending, and vehicle is in continuous braking mode for a long time, and the braking pressure in trailer air receiver can reduce rapidly, will cause braking force deficiency like this, have a strong impact on traffic safety.
Utility model content
The purpose of this utility model is to provide a kind of trailer and braking air-channel system thereof, to solve the problem of the braking pressure deficiency when continuous braking mode in prior art.
For solving the problems of the technologies described above, the utility model adopts following technical scheme:
According to an aspect of the present utility model, the utility model provides a kind of braking air-channel system of trailer, comprises supply air line, braking gas circuit, emergency relay valve, air receiver, brake cylinder; Supply air line connects air receiver through emergency relay valve, emergency relay valve receives speed-slackening signal by braking gas circuit, emergency relay valve cuts off the path of described supply air line to air receiver when receiving speed-slackening signal, and the gas in air receiver is passed to brake cylinder by pipeline; Described braking air-channel system also comprises a unidirectional circuit, and described unidirectional circuit is connected between supply air line and described air receiver, and unidirectional circuit is from supply air line to one-way conduction on the direction of air receiver.
Preferably, described unidirectional circuit comprises tracheae and is arranged at the check valve on tracheae, and described tracheae is connected between described supply air line and described air receiver, and described check valve only allows gas to flow toward air receiver direction.
Preferably, described tracheae one end connects described supply air line, the entrance point of check valve described in the tracheae other end, and the exit end of described check valve connects described air receiver.
Preferably, described braking air-channel system also comprises T-pipe joint; Three interfaces of described T-pipe joint connect described supply air line, described tracheae and described emergency relay valve respectively.
According to another aspect of the present utility model, the utility model provides a kind of trailer, comprises and brakes air-channel system as above.
As shown from the above technical solution, advantage of the present utility model and good effect are: braking air-channel system of the present utility model can continue to air receiver make-up gas when trailer braking protection valve, solve the problem of air receiver braking pressure deficiency when trailer is in braking mode for a long time, the braking pressure in air receiver is made to remain at suitable scope, the travel safety of effective raising trailer, avoids the generation of Peril Incident.
Accompanying drawing explanation
Fig. 1 is the principle schematic of the utility model trailer braking protection valve air-channel system preferred embodiment.
Description of reference numerals is as follows: gas path joint of 1, shaking hands; 2, to shake hands gas path joint; 3, supply air line; 4, emergency relay valve; 5, the first air receiver; 6, the second air receiver; 7, gas circuit is braked; 8, storage brake air chamber; 9, single chamber compressed air brake cylinder; 10, ABS; 11, check valve; 12, T-pipe joint; 13, tracheae.
Detailed description of the invention
The exemplary embodiment embodying the utility model feature & benefits will describe in detail in the following description.Be understood that the utility model can have various changes on different embodiments, it neither departs from scope of the present utility model, and explanation wherein and to be shown in be use when explain in essence, and be not used to limit the utility model.
The utility model provides a kind of novel double loop trailer braking protection valve air-channel system and adopts the trailer of this braking air-channel system, this braking air-channel system improves according to the double loop braking air-channel system that existing trailer uses, trailer also can be inflated air receiver when service brake, supplement braking pressure value in time, effectively improve traffic safety.
Particularly, consult Fig. 1, in the braking air-channel system of the present embodiment, supply air line 3 one end connects shakes hands gas path joint 1 to be connected with tractor truck, supply air line 3 other end connects the first air receiver 5, first air receiver 5 through emergency relay valve 4 and is also connected to one second air receiver 6 by pipeline.The control end of emergency relay valve 4 connects gas path joint 2 of shaking hands, to receive the speed-slackening signal of chaufeur by braking gas circuit 7.Emergency relay valve 4 by pipeline through ABS(Anti-lock Braking System, anti-skid brake system) 10 connection four storage brake air chambers 8 and two single chamber compressed air brake cylinders 9, storage brake air chamber 8 and single chamber compressed air brake cylinder 9 are as brake cylinder, implement braking to each wheel respectively, the quantity of storage brake air chamber 8 and single chamber compressed air brake cylinder 9 and classification are determined according to actual needs.
When emergency relay valve 4 receives speed-slackening signal, cut off by the path of supply air line 3 to the first air receiver 5, and make the gas in the first air receiver 5, second air receiver 6 pass to storage brake air chamber 8 and single chamber compressed air brake cylinder 9 by pipeline, thus implement braking.Concrete braking principle also can see the related introduction of prior art.
In the braking air-channel system of the present embodiment, T-pipe joint 12 is connected with between supply air line 3 and emergency relay valve 4, an interface of supply air line 3 and each connecting tee joint 12 of emergency relay valve 4,3rd interface of T-pipe joint 12 is connected with a tracheae 13, the other end of tracheae 13 connects the first air receiver 5 by check valve 11, and check valve 11 and emergency relay valve 4 are formed and to installation.Wherein, the entrance point of check valve 11 connects tracheae 13, and the exit end of check valve 11 connects the first air receiver 5, and gas only can be flowed toward the first air receiver 5 direction.
In this braking air-channel system, the unidirectional circuit be made up of tracheae 13 and check valve 11 and emergency relay valve 4 form parallel relationship.For have employed the trailer of this braking air-channel system, when driving a vehicle, supply air line 3 by emergency relay valve 4 and check valve 11 simultaneously to the first air receiver 5 air feed.When braking, supply air line 3 not by emergency relay valve 4 to air feed in the first air receiver 5, but supply air line 3 can by continuing air feed in the first air receiver 5 with emergency relay valve 4 to the check valve 11 installed, due to the one-way conduction effect of check valve 11, the pressurized air in the first air receiver 5 does not reflux by check valve 11.
Pass through the technical solution of the utility model, namely the problem of air receiver braking pressure deficiency when trailer is in braking mode is for a long time solved, make the braking pressure in air receiver remain at suitable scope, effectively improve the travel safety of trailer, avoid the generation of Peril Incident.
In the present embodiment, unidirectional circuit is connected with supply air line 3 by T-pipe joint 12, and to be formed with emergency relay valve 4 and to installation, be understandable that, in other embodiments, be not limited to only adopt connect in this way, only unidirectional circuit need be made to be connected between supply air line 3 and the first air receiver 5.And the exit end of check valve 11 also can be connect the first air receiver 5 by the road, and be not limited to directly connect the first air receiver 5 as the present embodiment.Check valve 11 can be selected as required in existing one-way valve structures.
The utility model at least tool has the following advantages:
1, the braking air-channel system after improving still meets the requirement about trailer double-loop air brake system in standard GB/T 12276-1999;
2, braking air-channel system of the present utility model can improve braking pressure value when trailer is braked for a long time in air receiver effectively, to solve in prior art the hypodynamic problem of braking that is that cause because air receiver inside brake air pressure when trailer is braked for a long time is too low;
3, braking air-channel system structure of the present utility model is simply novel, is convenient to install, and is skillfully constructed, significantly improves travel safety, and result of use is given prominence to.
Although describe the utility model with reference to several exemplary embodiment, should be appreciated that term used illustrates and exemplary and nonrestrictive term.Specifically can implement in a variety of forms due to the utility model and not depart from spirit or the essence of utility model, so be to be understood that, above-mentioned embodiment is not limited to any aforesaid details, and explain widely in the spirit and scope that should limit in claim of enclosing, therefore fall into whole change in claim or its equivalent scope and remodeling and all should be claim of enclosing and contained.
Claims (5)
1. a braking air-channel system for trailer, comprises supply air line, braking gas circuit, emergency relay valve, air receiver, brake cylinder; Supply air line connects air receiver through emergency relay valve, emergency relay valve receives speed-slackening signal by braking gas circuit, emergency relay valve cuts off the path of described supply air line to air receiver when receiving speed-slackening signal, and the gas in air receiver is passed to brake cylinder by pipeline; It is characterized in that:
Described braking air-channel system also comprises a unidirectional circuit, and described unidirectional circuit is connected between supply air line and described air receiver, and unidirectional circuit is from supply air line to one-way conduction on the direction of air receiver.
2. braking air-channel system according to claim 1, it is characterized in that, described unidirectional circuit comprises tracheae and is arranged at the check valve on tracheae, and described tracheae is connected between described supply air line and described air receiver, and described check valve only allows gas to flow toward air receiver direction.
3. braking air-channel system according to claim 2, is characterized in that, described tracheae one end connects described supply air line, the entrance point of check valve described in the tracheae other end, and the exit end of described check valve connects described air receiver.
4. braking air-channel system according to claim 2, is characterized in that, described braking air-channel system also comprises T-pipe joint; Three interfaces of described T-pipe joint connect described supply air line, described tracheae and described emergency relay valve respectively.
5. a trailer, is characterized in that, comprises the braking air-channel system as described in any one of claim 1-4.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420823756.1U CN204323315U (en) | 2014-12-22 | 2014-12-22 | Trailer and braking air-channel system thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420823756.1U CN204323315U (en) | 2014-12-22 | 2014-12-22 | Trailer and braking air-channel system thereof |
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| Publication Number | Publication Date |
|---|---|
| CN204323315U true CN204323315U (en) | 2015-05-13 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420823756.1U Active CN204323315U (en) | 2014-12-22 | 2014-12-22 | Trailer and braking air-channel system thereof |
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| CN (1) | CN204323315U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113479175A (en) * | 2021-08-23 | 2021-10-08 | 广州朗晴电动车有限公司 | But braking system device of self-propelled fire control trailer |
-
2014
- 2014-12-22 CN CN201420823756.1U patent/CN204323315U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113479175A (en) * | 2021-08-23 | 2021-10-08 | 广州朗晴电动车有限公司 | But braking system device of self-propelled fire control trailer |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant |