CN202448970U - Anti-lock device for hydraulic parking brake - Google Patents
Anti-lock device for hydraulic parking brake Download PDFInfo
- Publication number
- CN202448970U CN202448970U CN2012200873803U CN201220087380U CN202448970U CN 202448970 U CN202448970 U CN 202448970U CN 2012200873803 U CN2012200873803 U CN 2012200873803U CN 201220087380 U CN201220087380 U CN 201220087380U CN 202448970 U CN202448970 U CN 202448970U
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- Prior art keywords
- switch
- lock device
- hydraulic
- solenoid valve
- utility
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- 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
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Abstract
The utility model relates to the field of construction machinery, particularly to an anti-lock device for a hydraulic parking brake. The anti-lock device comprises an electrical control switch, a solenoid valve connected with the electrical control switch, and a hydraulic cylinder connected with the solenoid valve; the electrical control switch is a two wire switch; and the solenoid valve is a reversing solenoid valve without a return spring. According to the utility model, the electrical control switch is a two wire rocker switch, and the reversing valve is a dual electromagnetic directional valve without a return spring, so that the advantages of a hydraulic brake can be reserved, the alteration is small, the control is simple, and the implementation is convenient; and when power is cut off suddenly during running, the parking brake can not brake thoroughly, so that overturning and other accidents caused by parking braking can be avoided, and potential safety hazard can be eliminated.
Description
Technical field
The utility model relates to engineering machinery field, is specifically related to a kind of hydraulic parking braking anti-lock device.
Background technology
At present; Along with the continuous development of hydraulic efficiency pressure system is promoted, a lot of heavy mechanical equipments on the engineering, as the front hang, Forklift, heavy fork truck etc.; All generally use the hydraulic parking braking system, its advantage be highly sensitive, Parking moment is big, volume is little, simple in structure, can realize logic control etc.Its principle is: hydraulic pressure Parking control has only an electromagnetic valve, open when electric, during dead electricity by spring reset.Switch on to electromagnetic valve during driving, after electromagnetic valve was opened, hydraulic oil promoted braking and opens, and outage back valve return is realized the braking Parking by spring application.If when high speed driving; Braking during standstill ruptures, comes off because of electric wire or other reason causes the electromagnetic valve dead electricity, can cause valve return braking brake immediately, causes roll-over accident easily; Bring tremendous loss to lives and properties, therefore there is great potential safety hazard in this brake mode.
Summary of the invention
The utility model technical matters to be solved provides a kind of safe in utilization, the hydraulic parking braking anti-lock device that can effectively avoid safety misadventures such as overturning.
For realizing above-mentioned purpose, the utility model adopts following technical scheme:
The utility model comprise electric-controlled switch, with electric-controlled switch bonded assembly electromagnetic valve and with electromagnetic valve bonded assembly hydraulic actuating cylinder, said electric-controlled switch is a coupled twin switch, said electromagnetic valve is not for taking back the reversing solenoid valve of a spring.
The quantity of said electromagnetic valve coil is two.
Said coupled twin switch is the duplex rocker switch.
The good effect of the utility model is following:
The electric-controlled switch of the utility model adopts the duplex rocker switch; Change-over valve adopts two magnet coil change-over valves of not taking back a spring, has kept the advantage of hydraulic braking, and the change amount is little, control is simple, it is convenient to implement; When exercising sudden power; Braking during standstill can not braked and stop extremely, and the accidents such as overturning of having avoided braking during standstill to cause have been eliminated potential safety hazard.
Description of drawings
Fig. 1 is the structural representation of the utility model.
Among the figure, 1, electric-controlled switch; 2 electromagnetic valves; 3 hydraulic actuating cylinders.
The specific embodiment
Below in conjunction with accompanying drawing the utility model is further specified.
As shown in Figure 1, the utility model comprise electric-controlled switch 1, with electric-controlled switch bonded assembly electromagnetic valve 2 and with electromagnetic valve bonded assembly hydraulic actuating cylinder 3, said electric-controlled switch is a coupled twin switch, said electromagnetic valve is not for taking back the reversing solenoid valve of a spring.The quantity of said electromagnetic valve coil is two.Said coupled twin switch is the duplex rocker switch.
The automatically controlled employing duplex of the utility model rocker switch, control driving and Parking push the road location with switch during driving respectively, push the Parking position during parking, the switching-over of control electromagnetic valve.The pull back spring of the 3-position 4-way reversing solenoid valve of standard and pad removed become two magnet coil change-over valves of not taking back the position; Be not with the self-return function during this valve dead electricity; Just can commutate when only obtaining the switching-over instruction; Utilize the oily resistance realization outage back valve core of spool can not close, overturn thereby emergency braking can not occur.
The above; Preferable case study on implementation for the utility model; Be not that the utility model is done any restriction; Everyly any simple modification that above embodiment did, change and equivalent structure are changed, all still belong in the protection domain of the utility model technical scheme according to the utility model technical spirit.
Claims (3)
1. hydraulic parking braking anti-lock device; Comprise electric-controlled switch (1), with electric-controlled switch bonded assembly electromagnetic valve (2) and with electromagnetic valve bonded assembly hydraulic actuating cylinder (3); It is characterized in that said electric-controlled switch is a coupled twin switch, said electromagnetic valve is not for taking back the reversing solenoid valve of a spring.
2. hydraulic parking braking anti-lock device according to claim 1 is characterized in that, the quantity of said electromagnetic valve coil is two.
3. hydraulic parking braking anti-lock device according to claim 1 is characterized in that, said coupled twin switch is the duplex rocker switch.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012200873803U CN202448970U (en) | 2012-03-09 | 2012-03-09 | Anti-lock device for hydraulic parking brake |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012200873803U CN202448970U (en) | 2012-03-09 | 2012-03-09 | Anti-lock device for hydraulic parking brake |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202448970U true CN202448970U (en) | 2012-09-26 |
Family
ID=46864858
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2012200873803U Expired - Fee Related CN202448970U (en) | 2012-03-09 | 2012-03-09 | Anti-lock device for hydraulic parking brake |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202448970U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110356376A (en) * | 2019-06-28 | 2019-10-22 | 三一重机有限公司 | Parking braking control method and excavator |
| CN111043303A (en) * | 2019-12-16 | 2020-04-21 | 西安法士特汽车传动有限公司 | Automatic transmission braking system |
-
2012
- 2012-03-09 CN CN2012200873803U patent/CN202448970U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110356376A (en) * | 2019-06-28 | 2019-10-22 | 三一重机有限公司 | Parking braking control method and excavator |
| CN111043303A (en) * | 2019-12-16 | 2020-04-21 | 西安法士特汽车传动有限公司 | Automatic transmission braking 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: 20120926 Termination date: 20140309 |