CN201991861U - Integrated valve block for heavy forklift hydraulic system - Google Patents
Integrated valve block for heavy forklift hydraulic system Download PDFInfo
- Publication number
- CN201991861U CN201991861U CN2011201062280U CN201120106228U CN201991861U CN 201991861 U CN201991861 U CN 201991861U CN 2011201062280 U CN2011201062280 U CN 2011201062280U CN 201120106228 U CN201120106228 U CN 201120106228U CN 201991861 U CN201991861 U CN 201991861U
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- China
- Prior art keywords
- valve
- mouth
- valve body
- oil
- hydraulic system
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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 - Lifetime
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- Forklifts And Lifting Vehicles (AREA)
Abstract
The utility model relates to an integrated valve block for a heavy forklift hydraulic system. A valve block valve body 5 is provide with an electromagnetic valve 1, a retaining valve 2 and a reducing overflow valve 3, an oil inlet P of the valve block valve body 5 is connected with the input end of the retaining valve 2, a connecting pipeline on the output end of the retaining valve 2 is divided into two branches, one branch of the connecting pipeline is accessed to the electromagnetic valve 1 through the working oil inlet 8 of the electromagnetic valve, the electromagnetic valve oil outlet 6 of the electromagnetic valve 1 is respectively connected with ports A1, A2 and A3 which are arranged on the valve body 5 in parallel, and the electromagnetic valve oil return port 7 of the electromagnetic valve 1 is connected with a port T on the valve body 5; the other branch of the connecting pipeline is accessed to the reducing overflow valve 3 through a primary pressure oil port 11, a reducing valve secondary pressure oil port 10 of the reducing overflow valve 3 is respectively connected with the port A4 and the port A5 in parallel as well as a bag-type energy storage device 4, and the reducing valve oil return port 9 of the reducing overflow valve 3 is connected with the oil return port T of the valve body 5. The integrated valve block for the heavy forklift hydraulic system has a simple structure, better universality and lower failure rate during the application, and is convenient to maintain and repair.
Description
Technical field
The utility model belongs to heavy fork truck technical field, is specifically related to be used for the integrated valve chunk of heavy fork truck hydraulic system.
Background technique
Heavy fork truck hydraulic system adopts guide's control system, main multi-way valve work valve core of the spool valve is to be controlled by guide oil, its guide's handle working hydraulic pressure oil is provided by the external accumulator of guide's delivery valve piece, parking brake system hydraulic oil is then provided by the hand brake valve of a 3-position-3-way, and this two-way hydraulic oil liquid is taken from the different parts of hydraulic system respectively, and this kind fuel system has following shortcoming:
1, external pipeline complexity increases the system leak point, and reliability reduces;
2, cost is higher, main dependence on import spare;
3, regular maintenance is loaded down with trivial details, and parts increase influences the car load interior layout.
The model utility content
In order to solve existing heavy fork truck hydraulic system guide's oil feeding line and stopping brake oil feeding line is not same loop problem, and the fuel feeding in two loops is concentrated on the valve piece.Highly integrated valve group satisfies the work on hand requirement, and the utility model provides a kind of heavy fork truck hydraulic system integrated valve chunk.
Concrete technical solution is as follows:
The integrated valve chunk that is used for heavy fork truck hydraulic system comprises the valve body 5 of integrated valve chunk, is provided with solenoid valve 1, one-way valve 2 and decompression relief valve 3 in the valve body 5, and the hydraulic pipe line annexation in the valve body 5 is as follows:
Oil-feed P mouth on the described valve body 5 is connecting the input end of one-way valve 2, the connecting pipeline of one-way valve 2 output terminals is divided into two-way, one the tunnel through solenoid valve work filler opening 8 access solenoid valves 1, the solenoid valve oil outlet 6 of solenoid valve 1 is parallel respectively to connect A1 mouth, A2 mouth and the A3 mouth that valve body 5 is provided with, and the solenoid valve return opening 7 of solenoid valve 1 links to each other with T mouth on the valve body 5; Decompression relief valve 3 is inserted through pressure hydraulic fluid port of reduction valve 11 in another road, parallel respectively A4 mouth, A5 mouth and the bag type accumulator 4 of connecting of the reduction valve secondary pressure hydraulic fluid port 10 of decompression relief valve 3, the reduction valve return opening 9 of decompression relief valve 3 links to each other with the T mouth on the valve body 5.
The external pressure gauge of A1 mouth on the described valve body 5 shows parking brake system pressure, the external ransaxle hand brake disc of A2 mouth break filler opening, the external parking brake switch of A3 mouth, the external guide's handle of A4 mouth filler opening, the external pressure gauge of A5 shows the hydraulic system pilot pressure.
The valve body 5 of described integrated valve chunk is installed on the hydraulic valve bank, and its oil-feed P mouth is connected with the fuel tank of hydraulic system with oil return T mouth.
Useful technique effect of the present utility model is:
1, cost reduces, and uses screw-in cartridge valve to be integrated on the hydraulic valve bank, can realize relevant component production domesticization;
2, versatility is better, and all refitting vehicles at present are suitable for making a concerted effort;
3, rate of fault is lower, and repair and maintenance is more convenient.
Description of drawings
Fig. 1 is the utility model integrated valve group schematic diagram.
Embodiment
Below in conjunction with accompanying drawing, the utility model is further described by embodiment.
Embodiment:
Referring to Fig. 1, heavy fork truck comprises solenoid valve 1, one-way valve 2, decompression relief valve 3, bag type accumulator 4 and valve body 5 with the integrated valve chunk.The P mouth is the filler opening of integrated valve group, the T mouth is the return opening of integrated valve group, the high-voltage oil liquid that comes autonomous system is through entering the integrated valve group by the P mouth on the valve body 5, be divided into two-way through one-way valve 2, one the tunnel enters solenoid valve 1 through solenoid valve work filler opening 8, driver is controlled electromagnetic valve switch, realize the connection of oil circuit, high pressure oil enters parking brake system through solenoid valve oil outlet 6 again, implement parking braking for car load, when having pressed the solenoid valve switch, oil circuit disconnects, high pressure oil links to each other with T mouth on the valve body 5 by solenoid valve return opening 7, it is zero that pressure is let out, and stopping brake automatically terminates, and the external pressure gauge of A1 mouth shows parking brake system pressure in real time on the valve body 5, the A2 mouth connects ransaxle hand brake disc break filler opening, the external parking brake switch of A3 mouth; Another road enters decompression relief valve 3 through pressure hydraulic fluid port 11 of reduction valve, insert the unlatching closure that guide's handle oil-feed oil circuit is realized valve core of main valve through reduction valve secondary pressure hydraulic fluid port 10 and A4 mouth again, when guide's handle is failure to actuate, this road high pressure oil is given bag type accumulator 4 topping ups earlier through reduction valve return opening 9, high pressure oil was through decompression relief valve 3 automatic overflows after topping up was finished, reduction valve secondary pressure hydraulic fluid port 10 keeps pilot pressure 3.5Mpa, the A4 mouth connects guide's handle filler opening, and the external pressure gauge of A5 shows the hydraulic system pilot pressure in real time.
Working procedure is as follows:
When needing parking braking, presses by car load the rocker switch in the operator cabin, solenoid valve 1 is operated in right position, pressure oil is supplied with parking brake system through solenoid valve 1, when removing parking braking, press by needs switch once more, the high pressure oil of parking brake system links to each other with oil return inlet T through solenoid valve 1, the high pressure oil pressure release, parking braking is removed; When car load needs hydraulic pilot oil; handle guide's handle high pressure oil and supply with guide's oil circuit through one-way valve 2 and decompression relief valve 3 automatically; thereby control the work of main system multi-way valve; when car load shutdown valve body 5P mouth does not have high pressure oil to supply with; the high pressure oil that bag type accumulator 4 can provide relevant pressure for guide's handle, the hydraulic energy that bag type accumulator 4 stores self can guarantee that guide's handle moves 3～5 times under the car load parking situation.
Claims (1)
1. the integrated valve chunk that is used for heavy fork truck hydraulic system, it is characterized in that: the valve body (5) that comprises the integrated valve chunk, be provided with solenoid valve (1), one-way valve (2) and decompression relief valve (3) in the valve body (5), the hydraulic pipe line annexation in the valve body (5) is as follows:
Oil-feed P mouth on the described valve body (5) is connecting the input end of one-way valve (2), the connecting pipeline of one-way valve (2) output terminal is divided into two-way, one the tunnel through solenoid valve work filler opening (8) access solenoid valve (1), the solenoid valve oil outlet (6) of solenoid valve (1) walks abreast respectively and is connecting A1 mouth, A2 mouth and the A3 mouth that valve body (5) is provided with, and the solenoid valve return opening (7) of solenoid valve (1) is gone up the T mouth with valve body (5) and linked to each other; Decompression relief valve (3) is inserted through a pressure hydraulic fluid port of reduction valve (11) in another road, parallel respectively A4 mouth, A5 mouth and the bag type accumulator (4) of connecting of the reduction valve secondary pressure hydraulic fluid port (10) of decompression relief valve (3), the reduction valve return opening (9) of decompression relief valve (3) links to each other with the T mouth on the valve body (5);
The external pressure gauge of A1 mouth on the described valve body (5) shows parking brake system pressure, the external ransaxle hand brake disc of A2 mouth break filler opening, the external parking brake switch of A3 mouth, the external guide's handle of A4 mouth filler opening, the external pressure gauge of A5 shows the hydraulic system pilot pressure;
The valve body of described integrated valve chunk (5) is installed on the hydraulic valve bank, and its oil-feed P mouth is connected with the fuel tank of hydraulic system with oil return T mouth.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011201062280U CN201991861U (en) | 2011-04-13 | 2011-04-13 | Integrated valve block for heavy forklift hydraulic system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011201062280U CN201991861U (en) | 2011-04-13 | 2011-04-13 | Integrated valve block for heavy forklift hydraulic system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201991861U true CN201991861U (en) | 2011-09-28 |
Family
ID=44668350
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011201062280U Expired - Lifetime CN201991861U (en) | 2011-04-13 | 2011-04-13 | Integrated valve block for heavy forklift hydraulic system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201991861U (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103846904A (en) * | 2012-11-30 | 2014-06-11 | 中国科学院沈阳自动化研究所 | Servo valve box for controlling underwater hydraulic manipulator |
| CN104373409A (en) * | 2014-11-11 | 2015-02-25 | 宁夏嘉翔自控技术有限公司 | Hydraulic manifold block of automatic control system of ball pressing system in metallurgical industry |
| CN107139908A (en) * | 2017-05-27 | 2017-09-08 | 徐工集团工程机械股份有限公司科技分公司 | It is a kind of that there is the hand brake valve assembly for exporting oil sources |
| CN107161133A (en) * | 2017-05-27 | 2017-09-15 | 徐工集团工程机械股份有限公司科技分公司 | A kind of hand brake valve assembly |
| CN107264498A (en) * | 2017-05-27 | 2017-10-20 | 徐工集团工程机械股份有限公司科技分公司 | It is a kind of that there is the electrichydraulic control hand brake system for exporting oil sources |
-
2011
- 2011-04-13 CN CN2011201062280U patent/CN201991861U/en not_active Expired - Lifetime
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103846904A (en) * | 2012-11-30 | 2014-06-11 | 中国科学院沈阳自动化研究所 | Servo valve box for controlling underwater hydraulic manipulator |
| CN104373409A (en) * | 2014-11-11 | 2015-02-25 | 宁夏嘉翔自控技术有限公司 | Hydraulic manifold block of automatic control system of ball pressing system in metallurgical industry |
| CN107139908A (en) * | 2017-05-27 | 2017-09-08 | 徐工集团工程机械股份有限公司科技分公司 | It is a kind of that there is the hand brake valve assembly for exporting oil sources |
| CN107161133A (en) * | 2017-05-27 | 2017-09-15 | 徐工集团工程机械股份有限公司科技分公司 | A kind of hand brake valve assembly |
| CN107264498A (en) * | 2017-05-27 | 2017-10-20 | 徐工集团工程机械股份有限公司科技分公司 | It is a kind of that there is the electrichydraulic control hand brake system for exporting oil sources |
| CN107139908B (en) * | 2017-05-27 | 2024-01-23 | 徐工集团工程机械股份有限公司科技分公司 | Hand brake valve assembly with output oil source |
| CN107161133B (en) * | 2017-05-27 | 2024-01-23 | 徐工集团工程机械股份有限公司科技分公司 | Hand brake valve assembly |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term |
Granted publication date: 20110928 |
|
| CX01 | Expiry of patent term |