CN201816577U - Gas cap oil type brake system for tractor - Google Patents
Gas cap oil type brake system for tractor Download PDFInfo
- Publication number
- CN201816577U CN201816577U CN2010202952637U CN201020295263U CN201816577U CN 201816577 U CN201816577 U CN 201816577U CN 2010202952637 U CN2010202952637 U CN 2010202952637U CN 201020295263 U CN201020295263 U CN 201020295263U CN 201816577 U CN201816577 U CN 201816577U
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- brake
- air
- gas
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- pump
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Abstract
The utility model discloses a gas cap oil type brake system for a tractor, which comprises a braking pump, a brake connected with the braking pump, an air source and an air brake control system, wherein the air source is connected with the braking pump through the air brake control system. The gas cap oil type brake system can effectively combine the advantages of pneumatic brake mode with that of hydraulic brake mode. By utilizing a proven air brake control component of a heavy truck and a proven hydraulic brake executing component of a forklift, the gas cap oil type brake system meets the requirements of brake safety and compact structure on port tractors, also realizes the remote centralized control of the braking of dragged trailers, and has extremely good expandability; and simultaneously, a gas holder supplies power when the tractor is in failure of power, so that the driving safety is guaranteed.
Description
Technical field
The utility model relates to a kind of brake system, especially a kind of tractor truck air over hydraulic formula brake system.
Background technology
Present tractor truck (as the tractor truck of large-tonnage harbour internal combustion) brake system all is full hydraulic power brake system or air braking system.The full hydraulic power brake system is owing to be single-loop system all, and there is big hidden danger in the tractor truck safety that is used for four-wheel braking, and this brake system can not realize the braking of remote control drawbar trailer simultaneously; And the weak point of air braking system be need be bigger arrangement space, particularly very low owing to air pressure with respect to oil pressure for front and back bridge drg, need compressed air brake cylinder to pass through big brake push rod and connect, cause the pontic difficult arrangement, size strengthens, and the response time of air braking system is slow partially in addition.
Summary of the invention
The purpose of this utility model is that a kind of safety performance that provides for the deficiency that solves above-mentioned technology is good, the tractor truck that response time is fast, arrangement convenience is compact air over hydraulic formula brake system.
In order to achieve the above object, the designed tractor truck of the utility model air over hydraulic formula brake system, it comprises brake pump and the drg that links to each other with brake pump, also comprises source of the gas and compressed-air brake control system, and described source of the gas is connected with brake pump by compressed-air brake control system.
Preferred scheme is that described source of the gas is the engine air press; described compressed-air brake control system mainly comprises protective valve, air receiver, brake activation valve and assistor; the gas circuit of drawing from the engine air press is connected described protective valve, air receiver, brake activation valve and assistor successively, and described assistor is connected with brake pump.
Further scheme is that described protective valve is a four-loop protection valve, is provided with air dryer between engine air press and this four-loop protection valve; Two gas circuits of described four-loop protection valve output connect two reservoir tubes respectively, and these two reservoir tubes connect two assistors respectively by a two-chamber brake activation valve; Described brake pump quantity also is two, is connected two drgs of each brake pump control linkage respectively with assistor.
Further scheme is that the output of described four-loop protection valve also is provided with a gas circuit and links to each other with the propulsion source interface of trailer brake system by separating switch; One of them output gas circuit of described dual-chamber brake links to each other with the control source interface of trailer brake system by separating switch.
The resulting tractor truck of the utility model air over hydraulic formula brake system can be effectively in conjunction with the advantage of aerobraking mode with the brake mode of surging.The high pressure gas that this system utilizes the engine air press to come out are done the retrothrust source, and by four-loop protection valve be divided into the two independent source of the gas by the dual-chamber brake control action in brake pump, export the two independent hydraulic power source again and promote front and back rim brake enforcement braking, safety is better, can realize controlling the braking of drawbar trailer again by separating switch and trailer joint; Utilize the compressed air brake control element of heavy duty truck maturation and the hydraulic braking power element of fork truck maturation, the braking safety of port tractor, the compactedness of structure have been satisfied, can realize the remote centralized control of the trailer braking protection valve that draws again, have good expansion.Simultaneously under situation about running out of steam, provide power, guaranteed the safety of travelling by air receiver.
Description of drawings
Fig. 1 is the structural representation of embodiment 1;
Fig. 2 is the structural representation of embodiment 2;
Fig. 3 is the structural representation of embodiment 3.
Wherein: brake pump 1, drg 2, compressed-air brake control system 3, engine air press 4, four-loop protection valve 5, air receiver 6, brake activation valve 7, assistor 8, safety valve 10, warning light switch 11, source of the gas 12, separating switch 13, propulsion source interface 14, control source interface 15.
The specific embodiment
The utility model will be further described in conjunction with the accompanying drawings below by embodiment.
As shown in Figure 1, the described tractor truck of present embodiment air over hydraulic formula brake system, it comprises brake pump 1 and the drg 2 that links to each other with brake pump 1, also comprises source of the gas 12 and compressed-air brake control system 3, and described source of the gas 12 is connected with brake pump 1 by compressed-air brake control system 3.Can be effectively in conjunction with the advantage of aerobraking mode with the brake mode of surging.
As shown in Figure 2, the described tractor truck of present embodiment air over hydraulic formula brake system, it comprises brake pump 1 and the drg 2 that links to each other with brake pump 1, also comprises source of the gas 12 and compressed-air brake control system 3, and described source of the gas 12 is connected with brake pump 1 by compressed-air brake control system 3.Described source of the gas 12 is an engine air press 4, described compressed-air brake control system 3 mainly comprises protective valve, air receiver 6, brake activation valve 7 and assistor 8, the gas circuit of drawing from engine air press 4 is connected described protective valve, air receiver 6, brake activation valve 7 and assistor 8 successively, described assistor 8 is connected with brake pump 1, described protective valve is a four-loop protection valve 5, is provided with air dryer between engine air press 4 and this four-loop protection valve 5; Two gas circuits of described four-loop protection valve 5 outputs connect two reservoir tubes respectively, and these two reservoir tubes connect two assistors 8 respectively by a two-chamber brake activation valve 7; Described brake pump 1 quantity also is two, is connected two drgs 2 of each brake pump 1 control linkage respectively with assistor 8.
The described tractor truck of present embodiment with the principle of work of air over hydraulic formula brake system is: when real work; the high pressure gas that engine air press 4 produces; after air dryer filters moisture; be diverted in two air receivers 6 by four-loop protection valve 5, have corresponding safety valve 10, warning light switch 11 to be used to detect on the air receiver 6 and the air pressure of protection system.Then by dual-chamber brake 7 (foot pedal) come control brake enforcement, cancel the size with braking force.The thrust that high pressure gas produce changes high hydraulic brake fluid into by air assistor 8, affacts on each drg 2.When the Air compressor that runs out of steam quit work, power gas source 12 switched to by air receiver 6 and carries out air feed, has guaranteed the safety arrestment of system.
As shown in Figure 3, the described tractor truck of present embodiment is with air over hydraulic formula brake system, and on the basis of embodiment 2, described four-loop protection valve 5 outputs also are provided with a gas circuit and link to each other with the propulsion source interface 14 of trailer brake system by separating switch 13; Described dual-chamber brake 7 one of them output gas circuit link to each other with the control source interface 15 of trailer brake system by separating switch 13.
Present embodiment utilizes the propulsion source of the high pressure gas of engine air press 4 generations as brake system; after air dryer filters moisture; be diverted in two independent air receivers 6 by four-loop protection valve 5; implement glancing impact and step on brake pedal; control dual-chamber brake 7 output two independent power gas sources 12 act on air assistor 8; respectively connect brake pump 1 and change the high hydraulic brake fluid of output into, implement braking before and after acting on respectively on the drg 2 thereafter.Step on the stroke of brake pedal and the size that dynamics can realize braking force by control.When the trailer that draws has later been installed drg 2 and needed glancing impact, open separating switch 13, can tell when stepping on brake pedal on the drg 2 that one road high pressure gas act on trailer and realize trailer braking protection valve simultaneously, guarantee the synchronous braking of tractor truck and trailer, improve the safety of braking.
The described tractor truck of present embodiment with the principle of work of air over hydraulic formula brake system is: when real work; the high pressure gas that engine air press 4 produces; after air dryer filters moisture; be diverted in 2 air receivers 6 by four-loop protection valve 5, have corresponding safety valve 10, warning light switch 11 to be used to detect on the air receiver 6 and the air pressure of protection system.Then by dual-chamber brake 7 (foot pedal) come control brake enforcement, cancel the size with braking force.The thrust that high pressure gas produce changes high hydraulic brake fluid into by air assistor 8, affacts on each drg 2.Principle of work to trailer braking protection valve is: tell one road high pressure gas by the propulsion source of separating switch 13 as trailer braking protection valve by four-loop protection valve 5; tell one road high pressure gas by dual-chamber brake 7 and do the control source; two-way source of the gas 12 acts on the brake system of trailer, realizes the synchronous braking and the centralized control of tractor truck and trailer.
Claims (4)
1. a tractor truck is with air over hydraulic formula brake system, and it comprises brake pump and the drg that links to each other with brake pump, it is characterized in that also comprising source of the gas and compressed-air brake control system, and described source of the gas is connected with brake pump by compressed-air brake control system.
2. tractor truck according to claim 1 air over hydraulic formula brake system; it is characterized in that described source of the gas is the engine air press; described compressed-air brake control system mainly comprises protective valve, air receiver, brake activation valve and assistor; the gas circuit of drawing from the engine air press is connected described protective valve, air receiver, brake activation valve and assistor successively, and described assistor is connected with brake pump.
3. tractor truck according to claim 2 is characterized in that with air over hydraulic formula brake system described protective valve is a four-loop protection valve, is provided with air dryer between engine air press and this four-loop protection valve; Two gas circuits of described four-loop protection valve output connect two reservoir tubes respectively, and these two reservoir tubes connect two assistors respectively by a two-chamber brake activation valve; Described brake pump quantity also is two, is connected two drgs of each brake pump control linkage respectively with assistor.
4. tractor truck according to claim 3 is characterized in that with air over hydraulic formula brake system described four-loop protection valve output also is provided with a gas circuit and links to each other with the propulsion source interface of trailer brake system by separating switch; One of them output gas circuit of described dual-chamber brake links to each other with the control source interface of trailer brake system by separating switch.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010202952637U CN201816577U (en) | 2010-08-18 | 2010-08-18 | Gas cap oil type brake system for tractor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010202952637U CN201816577U (en) | 2010-08-18 | 2010-08-18 | Gas cap oil type brake system for tractor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201816577U true CN201816577U (en) | 2011-05-04 |
Family
ID=43914541
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010202952637U Expired - Lifetime CN201816577U (en) | 2010-08-18 | 2010-08-18 | Gas cap oil type brake system for tractor |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201816577U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103612626A (en) * | 2013-12-02 | 2014-03-05 | 杭叉集团股份有限公司 | Pneumatic control system of large-tonnage forklift |
-
2010
- 2010-08-18 CN CN2010202952637U patent/CN201816577U/en not_active Expired - Lifetime
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103612626A (en) * | 2013-12-02 | 2014-03-05 | 杭叉集团股份有限公司 | Pneumatic control system of large-tonnage forklift |
| CN103612626B (en) * | 2013-12-02 | 2015-12-09 | 杭叉集团股份有限公司 | Pneumatic control system of large-tonnage forklift |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| ASS | Succession or assignment of patent right |
Owner name: HANGCHA GROUP CO., LTD. Free format text: FORMER OWNER: ZHEJIANG HANGCHA IMP.+EXP.CO., LTD. Effective date: 20110818 |
|
| C41 | Transfer of patent application or patent right or utility model | ||
| COR | Change of bibliographic data |
Free format text: CORRECT: ADDRESS; FROM: 310016 HANGZHOU, ZHEJIANG PROVINCE TO: 310022 HANGZHOU, ZHEJIANG PROVINCE |
|
| TR01 | Transfer of patent right |
Effective date of registration: 20110818 Address after: 310022 No. 398 Shiqiao Road, Zhejiang, Hangzhou Patentee after: Hangcha Group Co., Ltd. Address before: 310016 No. 398 Shiqiao Road, Zhejiang, Hangzhou Patentee before: Zhejiang Hangcha Imp.&Exp.Co., Ltd. |
|
| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20110504 |