CN104196780A - Speed regulating loop for lifter outlet overflow throttling valve - Google Patents
Speed regulating loop for lifter outlet overflow throttling valve Download PDFInfo
- Publication number
- CN104196780A CN104196780A CN201410476278.6A CN201410476278A CN104196780A CN 104196780 A CN104196780 A CN 104196780A CN 201410476278 A CN201410476278 A CN 201410476278A CN 104196780 A CN104196780 A CN 104196780A
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- Prior art keywords
- valve
- overflow
- speed regulating
- regulating loop
- oil hydraulic
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- Fluid-Pressure Circuits (AREA)
- Forklifts And Lifting Vehicles (AREA)
Abstract
The invention discloses a speed regulating loop for a lifter outlet overflow throttling valve and belongs to the field of hydraulic transmission. The speed regulating loop comprises an oil tank, a hydraulic pump, a stop valve, a pressure gauge, an overflow valve, a reversing valve, a hydraulic cylinder and an overflow throttling valve. The inlet oil pipe of the hydraulic pump is connected with the oil tank. The outlet oil pipe of the hydraulic pump is respectively connected with the stop valve, the overflow valve and the reversing valve. The hydraulic cylinder is connected to the reversing valve. The oil return pipeline of the reversing valve is serially connected with the overflow throttling valve. The speed regulating loop is simple in structure, reasonable in design and easy to manufacture, and the problems that an existing lifter speed regulating loop is high in power consumption and high in heat productivity are solved.
Description
Technical field
The invention belongs to hydraulic transmission field, more particularly, relate to a kind of lifting machine lifting flow control circuit.
Background technique
Along with the development of automobile industry, auto repair becomes an emerging industry gradually with maintenance.Wherein lifting machine, as the important tool in auto repair and servicing operations, has also obtained development faster.Lifting machine is mainly that automobile is brought up to another safe altitude from a safe altitude, so that manual operation and maintenance.Lifting machine has a lot of types at present, according to the kind of drive, can be divided into mechanical transmission and hydraulic transmission.Mechanical transmission structure is simple, low price, but lifting weight is restricted, and leading screw or work nut slide fastener easily occur, and has larger potential safety hazard.And hydraulic transmission lifting machine Safety performance good, operate steadily, easy to maintenance and working efficiency is high, is the main flow type that current lifting machine transmission is used.But the current Hydraulic Power Transmission System of lifting machine, because flow control circuit is when the high-frequency work, power loss is high, heating value is large, has affected accuracy, stability and the Security of its operation, and has reduced its working life.
Summary of the invention
For existing lifting machine flow control circuit when the high-frequency work, the problem that power loss is high, heating value is large, the invention provides a kind of lifting machine outlet overflow throttle valve flow control circuit, by overflow throttle valve being set in outlet port, replace traditional throttle grverning, reach the object that reduces the wastage, reduces heat.
For addressing the above problem, the present invention adopts following technological scheme.
A kind of lifting machine outlet overflow throttle valve flow control circuit, comprise fuel tank, oil hydraulic pump, stop valve, pressure gauge, relief valve, selector valve, oil hydraulic cylinder, overflow throttle valve, the import oil pipe of described oil hydraulic pump is connected with fuel tank, outlet oil pipe is connected with stop valve, relief valve and selector valve respectively, the other end of described stop valve is connected with pressure gauge, described relief valve is connected fuel tank with the return tube of selector valve, described oil hydraulic cylinder is connected on selector valve, the overflow throttle valve of connecting on the return line of described selector valve.
Described selector valve is 3-position 4-way solenoid directional control valve.
Than prior art, beneficial effect of the present invention is:
(1) the present invention adopts outlet overflow throttle valve flow control circuit for the speed governing of lifting machine, in outlet port, overflow throttle valve is set, and for the higher lifting machine of frequency of okperation, adopts this loop to have advantages of that efficiency is high, power loss is low, heating value is little.
(2) the present invention is simple in structure, reasonable in design, is easy to manufacture.
Accompanying drawing explanation
Fig. 1 is hydraulic scheme of the present invention.
In figure: 1-fuel tank, 2-oil hydraulic pump, 3-stop valve, 4-pressure gauge, 5-relief valve, 6-selector valve, 7-oil hydraulic cylinder, 8-overflow throttle valve.
Embodiment
Below in conjunction with accompanying drawing, describe the present invention.
As shown in Figure 1, lifting machine outlet overflow throttle valve flow control circuit comprises fuel tank 1, oil hydraulic pump 2, stop valve 3, pressure gauge 4, relief valve 5, selector valve 6, oil hydraulic cylinder 7, overflow throttle valve 8, the import oil pipe of described oil hydraulic pump 2 is connected with fuel tank 1, outlet oil pipe is connected with stop valve 3, relief valve 5 and selector valve 6 respectively, the other end of described stop valve 3 is connected with pressure gauge 4, described relief valve 5 is connected fuel tank 1 with the return tube of selector valve 6, described oil hydraulic cylinder 7 is connected on selector valve 6, the overflow throttle valve 8 of connecting on the return line of described selector valve 6.
Described selector valve 6 is 3-position 4-way solenoid directional control valve.
embodiment 1
As shown in Figure 1, lifting machine outlet overflow throttle valve flow control circuit comprises fuel tank 1, oil hydraulic pump 2, stop valve 3, pressure gauge 4, relief valve 5, selector valve 6, oil hydraulic cylinder 7, overflow throttle valve 8, the import oil pipe of described oil hydraulic pump 2 is connected with fuel tank 1, outlet oil pipe is connected with stop valve 3, relief valve 5 and selector valve 6 respectively, the other end of described stop valve 3 is connected with pressure gauge 4, described relief valve 5 is connected fuel tank 1 with the return tube of selector valve 6, described oil hydraulic cylinder 7 is connected on selector valve 6, the overflow throttle valve 8 of connecting on the return line of described selector valve 6.
Described selector valve 6 is 3-position 4-way solenoid directional control valve, and described relief valve 5 adopts direct-acting overflow valve.
Claims (2)
1. a lifting machine exports overflow throttle valve flow control circuit, comprise fuel tank (1), oil hydraulic pump (2), stop valve (3), pressure gauge (4), relief valve (5), selector valve (6), oil hydraulic cylinder (7), overflow throttle valve (8), it is characterized in that, the import oil pipe of described oil hydraulic pump (2) is connected with fuel tank (1), outlet oil pipe respectively with stop valve (3), relief valve (5) is connected with selector valve (6), the other end of described stop valve (3) is connected with pressure gauge (4), the return tube of described relief valve (5) and selector valve (6) is connected fuel tank (1), described oil hydraulic cylinder (7) is connected on selector valve (6), the overflow throttle valve (8) of connecting on the return line of described selector valve (6).
2. lifting machine outlet overflow throttle valve flow control circuit according to claim 1, is characterized in that, described selector valve (6) is 3-position 4-way solenoid directional control valve.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410476278.6A CN104196780A (en) | 2014-09-18 | 2014-09-18 | Speed regulating loop for lifter outlet overflow throttling valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410476278.6A CN104196780A (en) | 2014-09-18 | 2014-09-18 | Speed regulating loop for lifter outlet overflow throttling valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN104196780A true CN104196780A (en) | 2014-12-10 |
Family
ID=52082123
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410476278.6A Pending CN104196780A (en) | 2014-09-18 | 2014-09-18 | Speed regulating loop for lifter outlet overflow throttling valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN104196780A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105041754A (en) * | 2015-08-24 | 2015-11-11 | 南京埃斯顿自动化股份有限公司 | Throttling overflow valve |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2013151986A (en) * | 2012-01-25 | 2013-08-08 | Kyb Co Ltd | Circuit pressure control device, hydraulic control circuit using the same, and hydraulic control circuit of construction machine |
| CN203384139U (en) * | 2013-06-05 | 2014-01-08 | 浙江工商职业技术学院 | Inlet speed regulating loop |
-
2014
- 2014-09-18 CN CN201410476278.6A patent/CN104196780A/en active Pending
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2013151986A (en) * | 2012-01-25 | 2013-08-08 | Kyb Co Ltd | Circuit pressure control device, hydraulic control circuit using the same, and hydraulic control circuit of construction machine |
| CN203384139U (en) * | 2013-06-05 | 2014-01-08 | 浙江工商职业技术学院 | Inlet speed regulating loop |
Non-Patent Citations (4)
| Title |
|---|
| 严国英: "回油路溢流节流阀的研究", 《陕西工学院学报》 * |
| 朱洪涛: "变负载***的液压节流调速技术", 《南昌大学学报（工科版）》 * |
| 沈阳市技术革新展览馆等: "液压基本知识讲座", 《机械工人冷加工》 * |
| 王洪坤等: "节流式和溢流式液压耗能阻尼器性能比较研究", 《液压气动与密封》 * |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105041754A (en) * | 2015-08-24 | 2015-11-11 | 南京埃斯顿自动化股份有限公司 | Throttling overflow valve |
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| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C02 | Deemed withdrawal of patent application after publication (patent law 2001) | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20141210 |