CN104015718A - Displacement compensator - Google Patents
Displacement compensator Download PDFInfo
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- CN104015718A CN104015718A CN201410031505.4A CN201410031505A CN104015718A CN 104015718 A CN104015718 A CN 104015718A CN 201410031505 A CN201410031505 A CN 201410031505A CN 104015718 A CN104015718 A CN 104015718A
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- check valve
- brake
- mouth
- oil cylinder
- cylinder
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Abstract
The invention discloses a displacement compensator, and relates to the technical field of engineering machinery manufacturing. The displacement compensator comprises a first cylinder, a second cylinder, a first one-way valve and a second one-way valve, wherein a spring cavity of the first cylinder, a spring cavity of the second cylinder, an A port of the first one-way valve and an A port of the second one-way valve are all communicated with oil outlets of a brake valve; a non-spring cavity of the first cylinder, a non-spring cavity of the second cylinder, a B port of the first one-way valve and a B port of the second one-way valve are all communicated with brake cylinder ports of a wet brake. The displacement compensator disclosed by the invention can solve the problems of the slow brake reaction and the poor brake sensitivity of an engineering machinery braking system.
Description
Technical field
The present invention relates to construction machinery production technical field; Especially there is a discharge capacity compensate function, for the discharge capacity compensator of braking system of engineering machinery.
Background technology
The discharge capacity of existing construction machinery and equipment wet type bridge drg is larger, but does not dispose discharge capacity compensator, reacts slow while therefore braking, and needs the energy storage that configuration is larger.Particularly after friction disc wear, discharge capacity is several times before wearing and tearing, while braking in this case reflection slower, and the braking number of times after engine off greatly reduces.
Summary of the invention
The object of this invention is to provide a kind of discharge capacity compensator, when it can solve braking system of engineering machinery braking, react slow, the problem that braking sensitivity is poor.
In order to address the above problem, the technical solution used in the present invention is:
This discharge capacity compensator, includes the first oil cylinder, the second oil cylinder, the first check valve and the second check valve; The spring cavity of described the first oil cylinder, the A mouth of the spring cavity of described the second oil cylinder and described the first check valve and the A mouth of described the second check valve are all connected with the oil outlet of brake activation valve; The non-spring cavity of described the first oil cylinder, the B mouth of the non-spring cavity of described the second oil cylinder and the B mouth of described the first check valve and described the second check valve is all connected with the brake cylinder mouth of running brake; The K mouth of described the first check valve and the K mouth of described the second check valve are connected with the B mouth of the first check valve and the B mouth of the second check valve respectively.
In above technical scheme, more specifically scheme is: described the first check valve and the second check valve are hydraulic control one-way valve, there is respectively one at the first oil cylinder and the second oil cylinder, to break down when described running brake cannot be unclamped, by one-way valve opens, thereby releasing brake oil cylinder working-pressure unclamps the control mouth K of described running brake.
Owing to having adopted technique scheme, the present invention compared with prior art has following beneficial effect:
The present invention is contained in braking system of engineering machinery, shortens brake response time, improves braking sensitivity, has improved construction machinery and equipment deceleration and stopping performance, reduces energy storage discharge capacity, reduces costs, and has strengthened the competitiveness of product in market.
Accompanying drawing explanation
Fig. 1 is principle of the invention schematic diagram.
Number in the figure is expressed as: 1, the first oil cylinder; 2, the second oil cylinder; 3, the first check valve; 4, the second check valve; 5, the brake cylinder mouth of running brake; 6, the oil outlet of brake activation valve.
The specific embodiment
Below in conjunction with accompanying drawing, the invention will be further described:
The discharge capacity compensator of Fig. 1, includes the first oil cylinder 1, the second oil cylinder 2, the first check valves 3 and the second check valve 4; The spring cavity of the first oil cylinder 1, the A mouth of the spring cavity of the second oil cylinder 2 and the first check valve 3 and the A mouth of the second check valve 4 are all connected with the oil outlet 6 of brake activation valve; The non-spring cavity of the first oil cylinder 1, the B mouth of the non-spring cavity of the second oil cylinder 2 and the first check valve 3 and the B mouth of the second check valve 4 are all connected with the brake cylinder mouth 5 of running brake, and running brake is oil-immersed multi-disk brake.The first check valve 3 and the second check valve 4 are hydraulic control one-way valve, there is respectively one to control a mouthful K, when the first oil cylinder 1 and the second oil cylinder 2 break down when drg cannot be unclamped, pressure oil in brake cylinder can be by controlling mouthful K by one-way valve opens, the pressure of releasing brake oil cylinder, thereby release the brake.
Discharge capacity compensator principle of work is: when driver depresses brake pedal, braking liquid enters the first oil cylinder and the spring cavity of the second oil cylinder and the brake cylinder that enters oil-immersed multi-disk brake by the first check valve and the second check valve in discharge capacity compensator; After loosen the brake, the fluid of brake system can all not got back to fuel tank, but some has stayed in discharge capacity compensator, and during next time braking, brake system just can rapid reaction.
Claims (2)
1. a discharge capacity compensator, is characterized in that: include the first oil cylinder (1), the second oil cylinder (2), the first check valve (3) and the second check valve (4); The spring cavity of described the first oil cylinder (1), the A mouth of the spring cavity of described the second oil cylinder (2) and described the first check valve (3) and the A mouth of described the second check valve (4) are all connected with the oil outlet (6) of brake activation valve; The non-spring cavity of described the first oil cylinder (1), the B mouth of the non-spring cavity of described the second oil cylinder (2) and described the first check valve (3) and the B mouth of described the second check valve (4) are all connected with the brake cylinder mouth (5) of running brake; The K mouth of the K mouth of described the first check valve (3) and described the second check valve (4) is connected with the B mouth of the first check valve (3) and the B mouth of the second check valve (4) respectively.
2. discharge capacity compensator according to claim 1, it is characterized in that: described the first check valve (3) and the second check valve (4) are hydraulic control one-way valve, there is respectively one at the first oil cylinder (1) and the second oil cylinder (2), to break down when described running brake cannot be unclamped, by one-way valve opens, thereby releasing brake oil cylinder working-pressure unclamps the control mouth K of described running brake.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410031505.4A CN104015718B (en) | 2014-01-23 | 2014-01-23 | Discharge capacity compensator |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410031505.4A CN104015718B (en) | 2014-01-23 | 2014-01-23 | Discharge capacity compensator |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN104015718A true CN104015718A (en) | 2014-09-03 |
| CN104015718B CN104015718B (en) | 2016-04-20 |
Family
ID=51432820
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410031505.4A Active CN104015718B (en) | 2014-01-23 | 2014-01-23 | Discharge capacity compensator |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN104015718B (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113389829A (en) * | 2021-06-10 | 2021-09-14 | 徐州徐工矿业机械有限公司 | Mining dump truck and brake automatic compensator, brake and braking method thereof |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5826487A (en) * | 1997-02-20 | 1998-10-27 | Caterpillar Inc. | Pressure control for a pair of parallel hydraulic circuits |
| CN101665221A (en) * | 2008-09-05 | 2010-03-10 | 大港油田集团中成装备制造公司 | Drill disk-type brake hydraulic system |
| CN102363432A (en) * | 2011-06-30 | 2012-02-29 | 徐工集团工程机械股份有限公司江苏徐州工程机械研究院 | Steering control device for electric wheel mining dump trucks |
| CN102777438A (en) * | 2012-08-17 | 2012-11-14 | 邓开忠 | Multifunctional integrated valve bank of hydraulic motor |
| CN202764956U (en) * | 2012-08-17 | 2013-03-06 | 徐州徐工铁路装备有限公司 | Wheel type engineering machinery integrated control system |
-
2014
- 2014-01-23 CN CN201410031505.4A patent/CN104015718B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5826487A (en) * | 1997-02-20 | 1998-10-27 | Caterpillar Inc. | Pressure control for a pair of parallel hydraulic circuits |
| CN101665221A (en) * | 2008-09-05 | 2010-03-10 | 大港油田集团中成装备制造公司 | Drill disk-type brake hydraulic system |
| CN102363432A (en) * | 2011-06-30 | 2012-02-29 | 徐工集团工程机械股份有限公司江苏徐州工程机械研究院 | Steering control device for electric wheel mining dump trucks |
| CN102777438A (en) * | 2012-08-17 | 2012-11-14 | 邓开忠 | Multifunctional integrated valve bank of hydraulic motor |
| CN202764956U (en) * | 2012-08-17 | 2013-03-06 | 徐州徐工铁路装备有限公司 | Wheel type engineering machinery integrated control system |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113389829A (en) * | 2021-06-10 | 2021-09-14 | 徐州徐工矿业机械有限公司 | Mining dump truck and brake automatic compensator, brake and braking method thereof |
Also Published As
| Publication number | Publication date |
|---|---|
| CN104015718B (en) | 2016-04-20 |
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Effective date of registration: 20200623 Address after: No. 588 Yancheng South Road, Wujin high tech Industrial Development Zone, Changzhou City, Jiangsu Province Patentee after: Liugong (Changzhou) Mining Machinery Co.,Ltd. Address before: 545007 the Guangxi Zhuang Autonomous Region Liuzhou City Liu Tai Road No. 1 Patentee before: GUANGXI LIUGONG MACHINERY Co.,Ltd. |