CN203805886U - Brake control device for hydraulic drive engineering vehicles - Google Patents
Brake control device for hydraulic drive engineering vehicles Download PDFInfo
- Publication number
- CN203805886U CN203805886U CN201420251118.7U CN201420251118U CN203805886U CN 203805886 U CN203805886 U CN 203805886U CN 201420251118 U CN201420251118 U CN 201420251118U CN 203805886 U CN203805886 U CN 203805886U
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- CN
- China
- Prior art keywords
- valve
- communicated
- hydraulic
- triple valve
- steering cylinder
- 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
Links
- 239000010720 hydraulic oil Substances 0.000 claims abstract description 8
- 239000003921 oil Substances 0.000 claims abstract description 8
- 239000003638 chemical reducing agent Substances 0.000 abstract description 4
- 229910000831 Steel Inorganic materials 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 2
- 238000010276 construction Methods 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 238000003801 milling Methods 0.000 description 2
- 239000010959 steel Substances 0.000 description 2
- 230000007812 deficiency Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000007704 transition Effects 0.000 description 1
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- Braking Arrangements (AREA)
Abstract
The utility model provides a brake control device for hydraulic drive engineering vehicles. The brake control device comprises a reducer brake communicated with a port c of a first tee valve, the port a of the first tee valve is communicated with a hydraulic oil tank through a second tee valve which is communicated with a pressure control oil pipe, the port b of the first tee valve is communicated with one output pipeline of a steering cylinder, and a valve is arranged between the first tee valve and the output pipeline of the steering cylinder. The device can be started in emergency, is simple in principle and convenient to operate and can be widely applied to the hydraulic drive engineering vehicles, a walking brake can be released by rotating the system steering wheel, brake can be released rapidly without an external power source or mechanical walking reducer brake disassembling, and towing is implemented.
Description
Technical field
The utility model relates to a kind of construction machinery and equipment for full hydraulic drive (as Full hydraulic pressure double steel roller, wheel-type spreading machine, Wheeled type milling machine etc.) braking force control system.
Background technology
Along with the development of science and technology and hydraulic technique, the raising of hydraulic pressure component performance reliability, and people are to mechanical equipment hommization, what traveling comfort required improves constantly, and has promoted generally application and the popularization of hydraulic technique in nearly all engineering machinery field.
The running gear of most of hydraulically powered construction machinery and equipment all adopts the reductor of HM Hydraulic Motor and band brake to realize at present, as all-hydraulic single-drum road roller, dual-steel wheel road roller, wheel-type spreading machine, Wheeled type milling machine etc.The emergent control system of its drg is two kinds of modes substantially: 1. by Emergency Power Supply, generally as manual pump, electrical drive power unit, realize the releasing of reductor braking device and realize urgent trailer; 2. the releasing that realizes reductor braking device by the push rod of mechanical dismounting running speed reducer brake realizes urgent trailer.The first mode pipeline is more, has increased corresponding cost simultaneously, the second mode complex operation, and difficulty is larger, and efficiency is low, easily causes the secondary pollution of hydraulic efficiency pressure system simultaneously.
Amid all these factors, for the emergent control system of hydraulically powered engineering truck drg, a kind of cost of needs is low, principle simple, the control system of simple operation.
Summary of the invention
The purpose of this utility model, be exactly for the existing deficiency of prior art, and provide a kind of technical scheme of the braking force control system for hydraulic-driven engineering truck, the device of this scheme can be answered emergency opening, and principle is simple, simple operation, can be widely used on hydraulically powered engineering truck, rotation system bearing circle just can be realized walking drg and remove, and without external connection power source and mechanical dismounting running speed reducer brake brake off rapidly, realizes trailer.
This programme is achieved by the following technical measures: a kind of braking force control system for hydraulic-driven engineering truck, comprise reductor braking device, the feature of this programme is: reductor braking device is communicated with the c mouth of first triple valve, the a mouth of first triple valve is communicated with hydraulic reservoir by second triple valve, second triple valve is also communicated with pressure control oil pipe, the b mouth of first triple valve is communicated with a delivery conduit of steering cylinder, between first triple valve and the delivery conduit of steering cylinder, is provided with a valve.
First described triple valve is manual three-way valve.
Second described triple valve is solenoid directional control valve.
The b mouth of first triple valve is communicated with the left-hand rotation delivery conduit of steering cylinder.
The b mouth of first triple valve is communicated with the right-hand rotation delivery conduit of steering cylinder.
Described valve is for stoping hydraulic oil to flow to the check valve of steering cylinder from hand change over valve.
The beneficial effect of this programme can be learnt according to the narration to such scheme, owing to having manual three-way valve in this scheme, the conducting that can manually control hydraulic oil with by, there is steering cylinder, can provide hydraulic oil for reductor braking device, play the effect of brake off, first triple valve can be communicated with left-hand rotation delivery conduit or the right-hand rotation delivery conduit of steering cylinder, be convenient to like this install, as long as engineering truck allows, both left-hand rotation delivery conduit can be arranged on, also right-hand rotation delivery conduit can be arranged on; Between first triple valve and the delivery conduit of steering cylinder, be provided with a check valve, avoid like this hydraulic oil to flow back to steering cylinder, make to turn to malfunctioning.As can be seen here, the utility model compared with prior art, has substantive distinguishing features and progress, and the beneficial effect of its enforcement is also apparent.
Accompanying drawing explanation
Fig. 1 is the structural representation of the utility model specific embodiment.
In figure, 1 is reductor braking device, and 2 is first triple valve, and 3 is second triple valve, and 4 is hydraulic reservoir, and 5 is pressure control oil pipe, and 6 is valve, and 7 is steering cylinder, and 8 is deflector.
The specific embodiment
For clearly demonstrating the technical characterstic of this programme, below by a specific embodiment, and in conjunction with its accompanying drawing, this programme is set forth.
By accompanying drawing, can find out, the braking force control system for hydraulic-driven engineering truck of this programme, comprise reductor braking device 1, reductor braking device 1 is communicated with the c mouth of first triple valve 2, the a mouth of first triple valve 2 is communicated with hydraulic reservoir 4 by second triple valve 3, second triple valve 3 is also communicated with pressure control oil pipe 5, in the present embodiment, the b mouth of first triple valve 2 is communicated with the left-hand rotation delivery conduit L of steering cylinder 7, between first triple valve 2 and the delivery conduit of steering cylinder 7, be provided with a valve 6, and described valve 6 is check valve.First described triple valve 2 is manual three-way valve.Described second triple valve 3 is solenoid directional control valve.
During use, under normal operation during braking during standstill, the oil circuit of reductor braking device 1 through the c mouth of first triple valve 2 to a mouth, then through 3 times hydraulic reservoirs 4 of second triple valve; When equipment is walked, second triple valve 3 must be electric, and system pressure oil arrives reductor braking device 1 through second triple valve 3 and first triple valve 2, realizes brake off.When equipment breaks down, need quick transition and while carrying out trailer, first need to open reductor braking device 1, first triple valve 2 is switched at this moment manual control, b mouth and the c mouth of its valve are connected, utilize deflector 8 and steering cylinder 7, can be used as an auxiliary Emergency Power Supply, steering wheel rotation, from L, discharge the hydraulic oil of certain flow, hydraulic oil is opened reductor braking device 1 through valve 6, realizes the object of brake off, drags vehicle.After device security shifts, then first triple valve 2 is moved back to original position, now the oil circuit control of retarder drg 2 and hydraulic reservoir 4 are communicated with, and reductor braking device 1 plays a role, and makes vehicle come back to parking state.
Claims (6)
1. the braking force control system for hydraulic-driven engineering truck, comprise reductor braking device, it is characterized in that: reductor braking device is communicated with the c mouth of first triple valve, the a mouth of first triple valve is communicated with hydraulic reservoir by second triple valve, second triple valve is also communicated with pressure control oil pipe, the b mouth of first triple valve is communicated with a delivery conduit of steering cylinder, between first triple valve and the delivery conduit of steering cylinder, is provided with a valve.
2. the braking force control system for hydraulic-driven engineering truck according to claim 1, is characterized in that: first described triple valve is manual three-way valve.
3. the braking force control system for hydraulic-driven engineering truck according to claim 1, is characterized in that: second described triple valve is solenoid directional control valve.
4. according to the braking force control system for hydraulic-driven engineering truck described in claim 1 or 2 or 3, it is characterized in that: the b mouth of first triple valve is communicated with the left-hand rotation delivery conduit of steering cylinder.
5. according to the braking force control system for hydraulic-driven engineering truck described in claim 1 or 2 or 3, it is characterized in that: the b mouth of first triple valve is communicated with the right-hand rotation delivery conduit of steering cylinder.
6. the braking force control system for hydraulic-driven engineering truck according to claim 1 and 2, is characterized in that: described valve is for stoping hydraulic oil to flow to the check valve of steering cylinder from hand change over valve.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420251118.7U CN203805886U (en) | 2014-05-16 | 2014-05-16 | Brake control device for hydraulic drive engineering vehicles |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420251118.7U CN203805886U (en) | 2014-05-16 | 2014-05-16 | Brake control device for hydraulic drive engineering vehicles |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203805886U true CN203805886U (en) | 2014-09-03 |
Family
ID=51444682
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420251118.7U Expired - Fee Related CN203805886U (en) | 2014-05-16 | 2014-05-16 | Brake control device for hydraulic drive engineering vehicles |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203805886U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2019128013A1 (en) * | 2017-12-28 | 2019-07-04 | 中国铁建高新装备股份有限公司 | Reverse brake control valve for hydraulic walking system |
-
2014
- 2014-05-16 CN CN201420251118.7U patent/CN203805886U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2019128013A1 (en) * | 2017-12-28 | 2019-07-04 | 中国铁建高新装备股份有限公司 | Reverse brake control valve for hydraulic walking system |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20140903 |