CN201026870Y - Integration full hydraulic pressure brake valve - Google Patents
Integration full hydraulic pressure brake valve Download PDFInfo
- Publication number
- CN201026870Y CN201026870Y CN 200620201118 CN200620201118U CN201026870Y CN 201026870 Y CN201026870 Y CN 201026870Y CN 200620201118 CN200620201118 CN 200620201118 CN 200620201118 U CN200620201118 U CN 200620201118U CN 201026870 Y CN201026870 Y CN 201026870Y
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- valve
- mouth
- communicated
- brake
- oil
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- Expired - Fee Related
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Abstract
The utility model relates to an integrated full hydraulic brake valve which is used in a loader. The utility model is characterized in that the P port is at the same time communicated with a liquid permitting valve, a brake electromagnetic valve for stopping the vehicle and emergency and a double-route brake valve; the brake electromagnetic valve for stopping the vehicle and emergency is communicated with the BR3 port of the brake oil-cylinder; the double-route brake valve is communicated with the BR1 port of the front bridge and the BR2 port of the back bridge, and the double-route brake valve and the brake electromagnetic valve for stopping the vehicle and emergency are respectively provided with the oil route of S1 port, S2 port and S3 port, and the connection part between the P port and the brake electromagnetic valve for stopping the vehicle and the emergency is provided with an one-way valve; the oil route of the P port and the double-route brake valve is provided with a double-one-way valve the oil outlets of which are communicated respectively with the two oil inlets of the double-route brake valve; the utility model has the advantages that one valve comprises the whole brake system, thus simplifying the installation of the components of the full hydraulic brake system and the integrated full hydraulic brake valve of the pipe route connection. The utility model can accomplish the four functions of the brake system being filled with liquid first, the system pressure controlling, the system maintaining pressure and the system pressure outputting.
Description
Technical field
The utility model relates to a kind of all-hydraulic brake activation valve of integrated form that is used for loader.
Background technology
The all-hydraulic brake activation valve of domestic production at present is split type, promptly is made of prefill valve, two-way brake activation valve, parking and emergency brake valve piece three parts.Owing to be divided into three elements, make the installation of braking element and the connection of pipeline become complicated, not only increased cost but also increased potential faults, and on small-sized loader, be difficult to find the space of installation elements, limited the use of this valve on small sized loader owing to increasing element.
Summary of the invention
The purpose of this utility model just provides and a kind ofly is integrated on the valve body by prefill valve, two-way brake activation valve, parking and the emergency braking electromagnetic valve of home loop with former full power hydraulic brake system, one valve has comprised whole brake system, installs and the all-hydraulic brake activation valve of pipeline bonded assembly integrated form thereby simplified the full power hydraulic brake system element.
Solution of the present utility model is such: described integrated hydraulic valve includes prefill valve, two-way brake activation valve, parking and emergency braking electromagnetic valve, and wherein the P mouth is communicated to logical prefill valve, parking and emergency braking electromagnetic valve, two-way brake activation valve simultaneously; Parking and emergency braking electromagnetic valve have the BR3 mouth that is communicated to brake cylinder; The two-way brake activation valve has the BR1 mouth that is communicated to propons and is communicated to back axle BR2 mouth, on two-way brake activation valve and parking and emergency braking electromagnetic valve in-line, be respectively arranged with the oil circuit that is communicated with S1 mouth, S2 mouth, S3 mouth, thereby finish the function of the preferential topping up of brake system, system pressure output.
In the oil circuit of P mouth connection parking and emergency braking electromagnetic valve, be provided with check valve; Be provided with double check valve in the oil circuit of P mouth connection two-way brake activation valve, the oil outlet of double check valve is communicated with two oil inlets of two-way brake activation valve respectively; Oil outlet at check valve has the oil circuit that is communicated with the S3 mouth; Two oil outlets at double check valve have the oil circuit that is communicated with S1 mouth, S2 mouth respectively, connect energy storage at S1, S2, S3 mouth, just can utilize check valve and energy storage to finish the pressure holding function of brake system jointly, and improve the relative reliability of brake system.
Oil inlet at check valve has the oil circuit that is communicated with the DS2 mouth; Oil inlet at double check valve has the oil circuit that is communicated with the DS2 mouth, connects the service brake low pressure warning switch at the DS2 mouth, just can finish the system pressure controllable function.
The utility model has the advantages that a valve has comprised whole brake system, install and the all-hydraulic brake activation valve of pipeline bonded assembly integrated form thereby simplified the full power hydraulic brake system element, finish the preferential topping up of brake system, system pressure control, system's pressurize, system pressure output four big functions.
Description of drawings
Accompanying drawing is embodiment of the present utility model.
Accompanying drawing 1 is a schematic diagram of the present utility model.
Accompanying drawing 2 is constructionals drawing of the present utility model.
The specific embodiment
Integrated hydraulic valve described in the utility model includes prefill valve 1, two-way brake activation valve 4, parking and emergency braking electromagnetic valve 5, and wherein the P mouth is communicated to logical prefill valve 1, parking and emergency braking electromagnetic valve 5, two-way brake activation valve 4 simultaneously; Parking and emergency braking electromagnetic valve 5 have the BR3 mouth that is communicated to brake cylinder; Two-way brake activation valve 4 has the BR1 mouth that is communicated to propons and is communicated to back axle BR2 mouth; On two-way brake activation valve 4 and parking and emergency braking electromagnetic valve 5 in-lines, be respectively arranged with the oil circuit that is communicated with S1 mouth, S2 mouth, S3 mouth.
Relatively independent for the drg and the pipeline that make three pressure output BR1, BR2, BR3 control, the relative reliability of raising brake system is provided with check valve 6 in the oil circuit of P mouth connection parking and emergency braking electromagnetic valve 5; Be provided with double check valve 2 in the oil circuit of P mouth connection two-way brake activation valve 4, the oil outlet of double check valve 2 is communicated with two oil inlets of two-way brake activation valve 4 respectively.
Oil outlet at check valve 6 has the oil circuit that is communicated with the S3 mouth; Two oil outlets at double check valve 2 have the oil circuit that is communicated with S1 mouth, S2 mouth respectively.Connect energy storage at S1, S2, S3 mouth, just can utilize check valve and energy storage to finish the pressure holding function of brake system jointly.
Oil inlet at check valve 6 has the oil circuit that is communicated with the DS2 mouth; Oil inlet at double check valve 2 has the oil circuit that is communicated with the DS2 mouth, connects the service brake low pressure warning switch at the DS2 mouth, just can finish the system pressure controllable function.
Principle of work of the present utility model is:
1. as shown when at S1, S2, when three energy storage pressures of S3 mouth bonded assembly reach 15MPa, prefill valve 1 spool left end pressure is greater than the spring force of right-hand member, topping up spool in the prefill valve 1 is in 2. position, make the control oil channel of the priority spool left end in the prefill valve 1 unload oil sump tank from the T mouth, priority spool is in 3. position, makes P mouth pressure oil flow to N confession other system fully and uses; When arbitrary energy storage in three energy storages pressure when being lower than 12.3MPa, the spring force of topping up spool right-hand member is greater than left end pressure, the topping up spool is in 1. position, priority spool is in 4. position under the effect of spring force, the throttling of N mouth, P mouth pressure oil is concentrated to three energy storage topping ups, finishes the preferential topping up function of brake system.When prefill valve breaks down, can't be to the energy storage topping up, the pressure of DS2 mouth reduces, and when reaching setup pressure value (10MPa), system gives the alarm by low pressure warning switch, reminds the chaufeur system to break down.
2. the function of double loop brake activation valve is the drg of bridge before and after the pressure oil in the energy storage is delivered to after reducing pressure fast, when stepping on the pedal of double loop brake activation valve, pressure oil among energy storage S1, the S2 is connected with the BR1 that leads to forward and backward bridge, BR2 mouth respectively, implement braking, the pressure oil of 15MPa is depressured to 6MPa in the energy storage simultaneously; After unclamping pedal, S1, S2 mouth and BR1, BR2 mouth disconnect, and BR1, BR2 mouth and fuel tank are connected, and braking is removed.
3. stop and the emergency braking electromagnetic valve, the pressure output of control emergency brake system, when pressing the control button of manual electromagnetic valve, the pressure oil among the energy storage S3 is connected brake off with the BR3 mouth that leads to brake cylinder; When the control button of the manual electromagnetic valve of pull-up, the pressure oil among the energy storage S3 disconnects with the BR3 mouth that leads to brake cylinder, and the BR3 mouth is connected with fuel tank, and the brake cylinder oil return is implemented to brake.
4.S1, S2, S3 be the energy storage interface, three energy storages are relatively independent by double check valve and check valve control, guarantee that three loops do not interact, make the drg and the pipeline of three pressure output BR1, BR2, BR3 control relatively independent, improved the relative reliability of brake system.
Claims (8)
1. all-hydraulic brake activation valve of integrated form, include brake pedal and integrated hydraulic valve, it is characterized in that described integrated hydraulic valve includes prefill valve (1), two-way brake activation valve (4), parking and emergency braking electromagnetic valve (5), wherein the P mouth is communicated to logical prefill valve (1), parking and emergency braking electromagnetic valve (5), two-way brake activation valve (4) simultaneously; Parking and emergency braking electromagnetic valve (5) have the BR3 mouth that is communicated to brake cylinder; Two-way brake activation valve (4) has the BR1 mouth that is communicated to propons and is communicated to back axle BR2 mouth; On two-way brake activation valve (4) and parking and emergency braking electromagnetic valve (5) in-line, be respectively arranged with the oil circuit that is communicated with S1 mouth, S2 mouth, S3 mouth.
2. the all-hydraulic brake activation valve of integrated form according to claim 1 is characterized in that being provided with check valve (6) in the oil circuit of P mouth connection parking and emergency braking electromagnetic valve (5).
3. the all-hydraulic brake activation valve of integrated form according to claim 1 is characterized in that being provided with double check valve (2) in the oil circuit of P mouth connection two-way brake activation valve (4), and the oil outlet of double check valve (2) is communicated with two oil inlets of two-way brake activation valve (4) respectively.
4. the all-hydraulic brake activation valve of integrated form according to claim 2 is characterized in that at the oil outlet of check valve (6) oil circuit that is communicated with the S3 mouth being arranged.
5. the all-hydraulic brake activation valve of integrated form according to claim 3 is characterized in that at two oil outlets of double check valve (2) oil circuit that is communicated with S1 mouth, S2 mouth being arranged respectively.
6. the all-hydraulic brake activation valve of integrated form according to claim 1 is characterized in that prefill valve (1) has the oil circuit that is communicated with the N mouth.
7. the all-hydraulic brake activation valve of integrated form according to claim 2 is characterized in that at the oil inlet of check valve (6) oil circuit that is communicated with the DS2 mouth being arranged.
8. the all-hydraulic brake activation valve of integrated form according to claim 3 is characterized in that at the oil inlet of double check valve (2) oil circuit that is communicated with the DS2 mouth being arranged.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200620201118 CN201026870Y (en) | 2006-12-27 | 2006-12-27 | Integration full hydraulic pressure brake valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200620201118 CN201026870Y (en) | 2006-12-27 | 2006-12-27 | Integration full hydraulic pressure brake valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201026870Y true CN201026870Y (en) | 2008-02-27 |
Family
ID=39131072
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200620201118 Expired - Fee Related CN201026870Y (en) | 2006-12-27 | 2006-12-27 | Integration full hydraulic pressure brake valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201026870Y (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101934789A (en) * | 2010-09-08 | 2011-01-05 | 芜湖盛力制动有限责任公司 | Hydraulic brake valve of full-hydraulic brake system in construction machinery |
| CN102887148A (en) * | 2012-09-25 | 2013-01-23 | 三一重工股份有限公司 | Electric control hydraulic reversing method, electric control hydraulic reversing system and engineering machinery |
| CN103465891A (en) * | 2013-09-26 | 2013-12-25 | 镇江金天辰新材料有限公司 | Hydraulic braking system |
| CN110576844A (en) * | 2019-09-17 | 2019-12-17 | 江苏腾旋科技股份有限公司 | Double-loop power brake valve |
-
2006
- 2006-12-27 CN CN 200620201118 patent/CN201026870Y/en not_active Expired - Fee Related
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101934789A (en) * | 2010-09-08 | 2011-01-05 | 芜湖盛力制动有限责任公司 | Hydraulic brake valve of full-hydraulic brake system in construction machinery |
| CN101934789B (en) * | 2010-09-08 | 2013-06-12 | 芜湖盛力制动有限责任公司 | Hydraulic brake valve of full-hydraulic brake system in construction machinery |
| CN102887148A (en) * | 2012-09-25 | 2013-01-23 | 三一重工股份有限公司 | Electric control hydraulic reversing method, electric control hydraulic reversing system and engineering machinery |
| CN102887148B (en) * | 2012-09-25 | 2016-07-13 | 三一重工股份有限公司 | Electric-controlled hydraulic commutation method, system and engineering machinery |
| CN103465891A (en) * | 2013-09-26 | 2013-12-25 | 镇江金天辰新材料有限公司 | Hydraulic braking system |
| CN110576844A (en) * | 2019-09-17 | 2019-12-17 | 江苏腾旋科技股份有限公司 | Double-loop power brake valve |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| EE01 | Entry into force of recordation of patent licensing contract |
Assignee: Tianjin Liugong Machinery Co., Ltd. Assignor: Guangxi Liugong Machinery Co., Ltd. Contract record no.: 2010120000035 Denomination of utility model: Integration full hydraulic pressure brake valve Granted publication date: 20080227 License type: Exclusive License Record date: 20100401 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20080227 Termination date: 20151227 |
|
| EXPY | Termination of patent right or utility model |