CN207554469U - The running gear of hydrostatic loading machine and hydrostatic loading machine - Google Patents
The running gear of hydrostatic loading machine and hydrostatic loading machine Download PDFInfo
- Publication number
- CN207554469U CN207554469U CN201721428468.6U CN201721428468U CN207554469U CN 207554469 U CN207554469 U CN 207554469U CN 201721428468 U CN201721428468 U CN 201721428468U CN 207554469 U CN207554469 U CN 207554469U
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- Prior art keywords
- pilot valve
- loading machine
- hydrostatic loading
- running gear
- spring
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Abstract
The utility model belongs to hydrostatic loading machine technical field, and in particular to a kind of running gear of hydrostatic loading machine and hydrostatic loading machine.The running gear includes motor, hydraulic cylinder, pilot valve and spring, the pilot valve is solenoid directional control valve, the pilot valve is at first position or the second position, the motor reaches zero delivery when the pilot valve is in the first position, the motor reaches maximum pump discharge when the pilot valve is in the second position, when pilot valve dead electricity in operating status, the pilot valve can be switched to the first position by the spring from the second position.Running gear and hydrostatic loading machine by using hydrostatic loading machine described in the utility model, the position of solenoid valve can be rapidly changed, when vehicle because when fault makes solenoid valve dead electricity so as to which the discharge capacity for making motor is reduced to zero, reduce the impact to hydraulic system, so as to eliminate safe hidden trouble.
Description
Technical field
The utility model belongs to hydrostatic loading machine technical field, and in particular to a kind of running gear of hydrostatic loading machine
And hydrostatic loading machine.
Background technology
With stepping up for Re-search on Urbanization degree and gradually reducing for labour, the automation journey of each production field
Degree, efficiency, extensive operation etc. are also stepping up.Meanwhile labour worker also carries labor intensity, labour comfort
Go out higher and higher demand.The advantages that exclusive good handling, output torque of hydrostatic running gear is unrelated with power exists
Heavy duty work is mechanically gradually applied, and hydrostatic loading machine has been a kind of trend in the development of China at this time.
Existing hydrostatic running motor is applied in Vehicular system, and motor drives vehicle to run with minimum injection rate.Work as horse
Dyne for electric-controlled system fault cause power-off when, motor will reach huge discharge position at 0.5 second or so, and vehicle will be because of moment
Retarding braking and cause impact, some potential safety problems is caused to driver.
Utility model content
The purpose of this utility model is above-mentioned at least one in order to solve the problems, such as, which is by following technology
What scheme was realized.
The utility model proposes a kind of running gear of hydrostatic loading machine, including motor, hydraulic cylinder, pilot valve
And spring, the pilot valve are solenoid directional control valve, the pilot valve is at first position or the second position, as the guide
Guide oil can reach the motor by the way that the piston forward direction of the hydraulic cylinder is driven to move when valve is in the first position
Zero delivery, guide oil can be by driving the piston reverses direction of the hydraulic cylinder to move when the pilot valve is in the second position
Dynamic that the motor is made to reach maximum pump discharge, when pilot valve dead electricity in operating status, the spring can be by the elder generation
Pilot valve switches to the first position from the second position.
Further, when the pilot valve is not charged, the pilot valve is under the spring-force driven dual of the spring
The first position；When the pilot valve charges, the pilot valve overcomes the spring force of the spring to be in the second
It puts.
Further, the pilot valve is two four-way electromagnetic proportional reversing valves.
Further, the motor is variable displacement motor.
The utility model also proposed a kind of hydrostatic loading machine, including the row of hydrostatic loading machine described above
Walking system.
Running gear and hydrostatic loading machine by using hydrostatic loading machine described in the utility model, can work as vehicle
Because fault when making solenoid valve dead electricity, rapidly changes the position of solenoid valve, so as to which the discharge capacity for making motor is reduced to zero, reduce
Impact to hydraulic system, so as to eliminate safe hidden trouble.
Description of the drawings
By reading the detailed description of hereafter preferred embodiment, it is various other the advantages of and benefit it is common for this field
Technical staff will become clear.Attached drawing is only used for showing the purpose of preferred embodiment, and is not considered as to this practicality
Novel limitation.And throughout the drawings, the same reference numbers will be used to refer to the same parts.In the accompanying drawings：
Fig. 1 is motor hydraulic schematic diagram in the utility model embodiment.
Respectively label represents as follows in attached drawing：
10：Motor, 20：Hydraulic cylinder, 30：Pilot valve, 40：Spring.
E：Guide's hydraulic fluid port.
Specific embodiment
The illustrative embodiments of the disclosure are more fully described below with reference to accompanying drawings.Although this public affairs is shown in attached drawing
The illustrative embodiments opened, it being understood, however, that may be realized in various forms the disclosure without the reality that should be illustrated here
The mode of applying is limited.It is to be able to be best understood from the disclosure, and can be by this public affairs on the contrary, providing these embodiments
The range opened completely is communicated to those skilled in the art.
Fig. 1 is motor hydraulic schematic diagram in the utility model embodiment.The running gear include motor 10, hydraulic cylinder 20,
Pilot valve 30 and spring 40, pilot valve 30 are solenoid directional control valve.Hydraulic oil is entered by guide's hydraulic fluid port E in pilot valve 30, into
One step is entered by pilot valve 30 in the plunger shaft of hydraulic cylinder 20, motor 10 is made to reach different by the movement for pushing piston rod
Discharge capacity.
Wherein, pilot valve 30 is two four-way electromagnetic proportional reversing valves, and motor 10 is variable displacement motor.By controlling electromagnetism ratio
The commutation of the electrical current control solenoid-operated proportional reversal valve of electromagnetic coil in example reversal valve, so as to which pilot valve 30 be made to be at the
Any position between one position and the second position meets the needs of 10 different displacements of motor.When pilot valve 30 is not charged, first
Pilot valve 30 is in first position, such as the currently shown positions of Fig. 1.When pilot valve 30 charges, by adjusting the electricity in electromagnetic coil
Stream is moved the sliding block in pilot valve 30, and when electromagnetic coil reaches maximum current, pilot valve 30 is in the second position, i.e.,
Guide oil is connected by the left lateral position of pilot valve 30 with hydraulic cylinder.When pilot valve 30 is in first position, guide oil passes through elder generation
Pilot valve 30 is entered in the plunger shaft of hydraulic cylinder 20, by pushing the movement of piston forward direction that motor 10 is made to reach zero delivery.Work as guide
When valve 30 is in the second position, guide oil is entered by pilot valve 30 in the plunger shaft of hydraulic cylinder 20, by pushing piston anti-
Motor 10 is made to reach maximum pump discharge to movement.When 30 unexpected dead electricity in operating status of pilot valve, spring 40 can be by guide
Valve 30 switches to first position from the second position, and the piston movement for passing through driving hydraulic cylinder 20 makes motor 10 reach zero delivery.
The utility model also proposed a kind of hydrostatic loading machine, including the row of hydrostatic loading machine described above
Walking system.
Running gear and hydrostatic loading machine by using hydrostatic loading machine described in the utility model, can work as vehicle
Because fault when making solenoid valve dead electricity, rapidly changes the position of solenoid valve, so as to which the discharge capacity for making motor is reduced to zero, reduce
Impact to hydraulic system, so as to eliminate safe hidden trouble.
The preferable specific embodiment of the above, only the utility model, but the scope of protection of the utility model is not
This is confined to, in the technical scope that any one skilled in the art discloses in the utility model, can be readily occurred in
Change or replacement, should be covered within the scope of the utility model.Therefore, the scope of protection of the utility model should be with
Subject to the scope of the claims.
Claims (5)
1. a kind of running gear of hydrostatic loading machine, which is characterized in that described including motor, hydraulic cylinder, pilot valve and spring
Pilot valve is solenoid directional control valve, and the pilot valve is at first position or the second position, when the pilot valve is in described
Guide oil can make the motor reach zero delivery by the way that the piston forward direction of the hydraulic cylinder is driven to move during first position, work as institute
The horse can be made by the way that the piston reverses direction of the hydraulic cylinder is driven to move by stating guide oil when pilot valve is in the second position
Up to reaching maximum pump discharge, when pilot valve dead electricity in operating status, the spring can be by the pilot valve from described
The second position switches to the first position.
2. the running gear of hydrostatic loading machine according to claim 1, which is characterized in that when the pilot valve is not charged
When, the pilot valve is in the first position under the spring-force driven dual of the spring；It is described when the pilot valve charges
Pilot valve overcomes the spring force of the spring to be in the second position.
3. the running gear of hydrostatic loading machine according to claim 1, which is characterized in that the pilot valve is two four
Energization magnetic proportional reversing valve.
4. the running gear of hydrostatic loading machine according to claim 1, which is characterized in that the motor is variable horse
It reaches.
5. a kind of hydrostatic loading machine, which is characterized in that hydrostatic loading machine described in including any one of claim 1-4
Running gear.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721428468.6U CN207554469U (en) | 2017-10-30 | 2017-10-30 | The running gear of hydrostatic loading machine and hydrostatic loading machine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721428468.6U CN207554469U (en) | 2017-10-30 | 2017-10-30 | The running gear of hydrostatic loading machine and hydrostatic loading machine |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN207554469U true CN207554469U (en) | 2018-06-29 |
Family
ID=62681284
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201721428468.6U Active CN207554469U (en) | 2017-10-30 | 2017-10-30 | The running gear of hydrostatic loading machine and hydrostatic loading machine |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN207554469U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109058453A (en) * | 2018-09-06 | 2018-12-21 | 张祝 | A kind of liquid transmission control method of the real-time automatic adjustment amount of changing oil |
-
2017
- 2017-10-30 CN CN201721428468.6U patent/CN207554469U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109058453A (en) * | 2018-09-06 | 2018-12-21 | 张祝 | A kind of liquid transmission control method of the real-time automatic adjustment amount of changing oil |
| CN109058453B (en) * | 2018-09-06 | 2019-12-03 | 张祝 | A kind of liquid transmission control method of the real-time automatic adjustment amount of changing oil |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CP03 | Change of name, title or address |
Address after: 261061 Shandong city in Weifang province Fu hi tech Industrial Development Zone, East Street No. 197 Patentee after: WEICHAI POWER Co.,Ltd. Patentee after: Weichai Hydraulic Transmission Co.,Ltd. Address before: 261061 no.197a, Fushou East Street, high tech Industrial Development Zone, Weifang City, Shandong Province Patentee before: WEICHAI POWER Co.,Ltd. Patentee before: LINDE HYDRAULICS (CHINA) Co.,Ltd. |
|
| CP03 | Change of name, title or address |