CN209228739U - A kind of altitude job platform rotational hydraulic system - Google Patents
A kind of altitude job platform rotational hydraulic system Download PDFInfo
- Publication number
- CN209228739U CN209228739U CN201821777489.3U CN201821777489U CN209228739U CN 209228739 U CN209228739 U CN 209228739U CN 201821777489 U CN201821777489 U CN 201821777489U CN 209228739 U CN209228739 U CN 209228739U
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- valve
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- way
- pressure variable
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Abstract
The utility model discloses a kind of altitude job platform rotational hydraulic systems, including fuel tank, constant pressure variable displacement pump, electric ratio three-position four-way valve, two-position two-way solenoid valve, balanced valve valve block, oscillating oil cylinder；The constant pressure variable displacement pump inlet port is connect with fuel tank, oil outlet and the electric ratio three-position four-way valve connect, the electric ratio three-position four-way valve is connect with the balanced valve valve block, the balanced valve valve block is connect with the oscillating oil cylinder, and the constant pressure variable displacement pump is connect with two-position two-way solenoid valve.The shortcomings that the utility model can not be adjusted for the platform velocity of rotation of existing high-altitude operation vehicle, energy consumption is high is designed, it realizes the adjusting of platform velocity of rotation and improves the capacity usage ratio of system, the unnecessary power loss of system is reduced, keeps system more energy saving.
Description
Technical field
The utility model relates to a kind of altitude job platform rotational hydraulic systems, belong to technical field of engineering machinery.
Background technique
High-altitude operation vehicle is the dedicated wheeled vehicle for urban infrastructure and maintenance etc. design, and operating personnel is flat
When carrying out high altitude operation on platform, in order to improve the operation convenience of high-altitude operation vehicle, the platform of high-altitude operation vehicle needs in the sky
It is rotated, prior art is as shown in Figure 1.
In the prior art, action process when platform is rotated counterclockwise are as follows: control crank, so that 3-position 4-way electromagnetism changes
Electric, right position of the hydraulic oil that constant displacement pump 2 exports Jing Guo three-position four-way electromagnetic directional valve 4, by hydraulic lock 5 is obtained to the Y1b of valve 4
The hydraulic control one-way valve on right side enters oscillating oil cylinder 7, opens simultaneously the hydraulic control list in left side in the hydraulic lock 5 connecting with oscillating oil cylinder 7
The hydraulic oil flowed out to valve, oscillating oil cylinder 7 passes through the hydraulic control one-way valve in left side, three-position four-way electromagnetic directional valve 4 in hydraulic lock 5
Right position oil return box, pass through oscillating oil cylinder 7 movement realize platform rotation.The extra oil liquid of constant displacement pump 2 passes through pump discharge
3 overflow of overflow valve is fallen；If the oil pressure that overflow valve breaks down or oscillating oil cylinder 7 is intracavitary is excessive, 7 oil in oscillating oil cylinder
Liquid by 6 oil return box of oil cylinder overflow valve that is connect with hydraulic control one-way valve, rotate clockwise it is similar with rotating counterclockwise, it is no longer superfluous
It states.
The prior art has the disadvantage that the change that rotation direction can only be realized by three-position four-way electromagnetic directional valve 4, no
The adjusting that can be carried out velocity of rotation, when turning to target position when high-altitude carries out operation, platform rotary micromotion is poor to be caused
Platform movement position is difficult to accurately control, and the oil liquid that constant displacement pump 6 provides is more, other other than oil liquid needed for system
Oil liquid overflow oil return box, energy saving is poor.
Summary of the invention
The present invention exactly in view of the deficienciess of the prior art, provide a kind of altitude job platform rotational hydraulic system,
It is control effectively according to the realization of handle tilt angle to platform velocity of rotation, fine motion is good, improves energy saving and safety.
To solve the above problems, the technical solution used in the present invention is as follows: a kind of altitude job platform rotational hydraulic
System, comprising: fuel tank 8, constant pressure variable displacement pump 9, electric ratio three-position four-way valve 10, two-position two-way solenoid valve 11, balanced valve valve block 12,
Oscillating oil cylinder 15；9 inlet port of constant pressure variable displacement pump is connect with fuel tank 8, oil outlet and the electric ratio three-position four-way valve
10 connections, the electric ratio three-position four-way valve 10 connect with the balanced valve valve block 12, the balanced valve valve block 12 and
The oscillating oil cylinder 15 connects, and the constant pressure variable displacement pump 9 is connect with two-position two-way solenoid valve 11.
The P2 mouth of the electric ratio three-position four-way valve 10 is connect with the oil outlet of the constant pressure variable displacement pump 9, T2 mouthfuls with
The fuel tank 8 connects, and A2 mouthfuls connect with the M mouth of the balanced valve valve block 12, B mouthfuls with the N of the balanced valve valve block 12
Mouth connection.
There are left balanced valve 13 and right balanced valve 14, the control of the left balanced valve 13 inside the balanced valve valve block 12
Mouth is connect with the N mouth of the balanced valve valve block 12, the control mouth of the right balanced valve 14 and the balanced valve valve block 12
M mouth connection.
Compared with prior art, the beneficial effects of the utility model are as follows:
(1) by adjusting the input current of electric ratio three-position four-way valve electromagnet, opening for electric ratio three-position four-way valve is adjusted
Mouth degree changes the flow for flowing into oscillating oil cylinder, to adjust platform velocity of rotation.
(2) by the input current of the electric ratio three-position four-way valve electromagnet of detection, change the state of two-position two-way solenoid valve,
When electric ratio three-position four-way valve is in middle position, for constant-pressure variable pump work in pressure cut off state, output flow is almost 0；When
When electric ratio three-position four-way valve is in non-middle position, constant-pressure variable pump work needs flow automatic in constant-pressure variable state, by system
Discharge capacity is adjusted, to improve the energy saving of platform rotation system.
Detailed description of the invention
Attached drawing 1 is prior art schematic diagram.
Attached drawing 2 is the principles of the present invention figure.
1-fuel tank in figure, 2-constant displacement pumps, 3-overflow valves, 4-three-position four-way electromagnetic directional valves, 5-hydraulic locks, 6-overflow
Flow valve, 7-oscillating oil cylinders.
8-fuel tank in figure, 9-constant pressure variable displacement pumps, 10-electric ratio three-position four-way valves, 11-two-position two-way solenoid valves,
12-balanced valve valve blocks, 13-left balanced valves, 14-right balanced valves.
Specific embodiment
Below in conjunction with drawings and examples, the present invention will be further described.
A kind of altitude job platform rotational hydraulic system as shown in Figure 2, it is characterised in that: a kind of high-altitude operation vehicle is flat
Platform rotational hydraulic system, comprising: fuel tank 8, electric ratio three-position four-way valve 10, two-position two-way solenoid valve 11, is put down at constant pressure variable displacement pump 9
Weigh valve valve block 12, oscillating oil cylinder 15；9 inlet port of constant pressure variable displacement pump is connect with fuel tank 8, oil outlet and the electric ratio
Three-position four-way valve 10 connects, and the electric ratio three-position four-way valve 10 is connect with the balanced valve valve block 12, the balance
Valve valve block 12 is connect with the oscillating oil cylinder 15, and the constant pressure variable displacement pump 9 is connect with two-position two-way solenoid valve 11.
The P2 mouth of the electric ratio three-position four-way valve 10 is connect with the oil outlet of the constant pressure variable displacement pump 9, T2 mouthfuls with
The fuel tank 8 connects, and A2 mouthfuls connect with the M mouth of the balanced valve valve block 12, B mouthfuls with the N of the balanced valve valve block 12
Mouth connection.
There are left balanced valve 13 and right balanced valve 14, the control of the left balanced valve 13 inside the balanced valve valve block 12
Mouth is connect with the N mouth of the balanced valve valve block 12, the control mouth of the right balanced valve 14 and the balanced valve valve block 12
M mouth connection.
The working process of the utility model is as follows: the utility model is a kind of altitude job platform rotational hydraulic system, this
The constant pressure variable displacement pump of utility model can work in pressure cut off state, can also work in constant-pressure variable state, when electric ratio
When the electromagnet of three-position four-way valve does not have signal input, pressing constant-pressure variable pump work by controlling two-position two-way solenoid valve Y3
Power dissengaged positions, output flow are almost 0；When the electromagnet input signal of electric ratio three-position four-way valve is not 0, pass through control
Two-position two-way solenoid valve Y3 makes constant-pressure variable pump work in constant-pressure variable state, needs flow adjust automatically discharge capacity by system, from
And improve the energy saving of platform rotation system.
Embodiment one:
When the electromagnet of electric ratio three-position four-way valve does not have input signal, platform is not rotated, at this time electric ratio three four
Port valve is in middle position, and pressure passes through two balanced valves locking in balanced valve valve block, two-position two-way solenoid valve Y3 in oscillating oil cylinder
In must not electricity condition, constant pressure variable displacement pump is in pressure cut off state, and output flow is almost 0.
Embodiment two:
When platform needs to turn right, to the electromagnet Y2a input signal of electric ratio three-position four-way valve, bi-bit bi-pass electricity
Magnet valve Y3 obtain it is electric, make be pumped variable pump be in constant-pressure variable state, electric ratio 3-position 4-way valve core moves right, constant-pressure variable
The output hydraulic pressure oil of pump flows through the left balanced valve in balance valve module, into swing by the left position of electric ratio three-position four-way valve
Oil cylinder, and right balanced valve is opened by the control mouth of right balanced valve, make the hydraulic oil flowed out in oscillating oil cylinder through electric ratio three
Four way solenoid valve oil return box.
Embodiment three:
When needing platform velocity of rotation to improve, increase the electromagnet input current of electric ratio three-position four-way valve, electric ratio
The opening degree of three-position four-way valve becomes larger, and the discharge capacity of constant pressure variable displacement pump can also become larger automatically, to export more liquid by system requirements
Pressure oil.
Claims (3)
1. a kind of altitude job platform rotational hydraulic system, it is characterised in that: including fuel tank (8), constant pressure variable displacement pump (9), electricity
Ratio three-position four-way valve (10), two-position two-way solenoid valve (11), balanced valve valve block (12), oscillating oil cylinder (15)；The constant pressure
Variable pump (9) inlet port is connect with fuel tank (8), and oil outlet and the electric ratio three-position four-way valve (10) connect, the electricity
Ratio three-position four-way valve (10) is connect with the balanced valve valve block (12), the balanced valve valve block (12) and the swing
Oil cylinder (15) connection, the constant pressure variable displacement pump (9) are connect with two-position two-way solenoid valve (11).
2. a kind of altitude job platform rotational hydraulic system according to claim 1, it is characterised in that: the electric ratio
The P2 mouth of example three-position four-way valve (10) is connect with the oil outlet of the constant pressure variable displacement pump (9), and T2 mouthfuls connect with the fuel tank (8)
It connects, A2 mouthfuls connect with the M mouth of the balanced valve valve block (12), and B mouthfuls connect with the N mouth of the balanced valve valve block (12).
3. a kind of altitude job platform rotational hydraulic system according to claim 1, it is characterised in that: the balance
Have left balanced valve (13) and right balanced valve (14) inside valve valve block (12), the control mouth of the left balanced valve (13) with it is described
The N mouth of balanced valve valve block (12) connects, the M mouth of the control mouth of the right balanced valve (14) and the balanced valve valve block (12)
Connection.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821777489.3U CN209228739U (en) | 2018-10-30 | 2018-10-30 | A kind of altitude job platform rotational hydraulic system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821777489.3U CN209228739U (en) | 2018-10-30 | 2018-10-30 | A kind of altitude job platform rotational hydraulic system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN209228739U true CN209228739U (en) | 2019-08-09 |
Family
ID=67501294
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201821777489.3U Expired - Fee Related CN209228739U (en) | 2018-10-30 | 2018-10-30 | A kind of altitude job platform rotational hydraulic system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN209228739U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114576508A (en) * | 2022-01-27 | 2022-06-03 | 北京航天发射技术研究所 | Vehicle-mounted radar turnover hydraulic control system and control method |
-
2018
- 2018-10-30 CN CN201821777489.3U patent/CN209228739U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114576508A (en) * | 2022-01-27 | 2022-06-03 | 北京航天发射技术研究所 | Vehicle-mounted radar turnover hydraulic control system and control method |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20190809 Termination date: 20211030 |