CN202952832U - Vehicle downhill speed stabilizing device - Google Patents
Vehicle downhill speed stabilizing device Download PDFInfo
- Publication number
- CN202952832U CN202952832U CN 201220665288 CN201220665288U CN202952832U CN 202952832 U CN202952832 U CN 202952832U CN 201220665288 CN201220665288 CN 201220665288 CN 201220665288 U CN201220665288 U CN 201220665288U CN 202952832 U CN202952832 U CN 202952832U
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- China
- Prior art keywords
- vehicle
- motor
- closed
- downhill
- stabilizing device
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- Expired - Fee Related
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Abstract
The utility model belongs to the field of engineering and technique, and in particular relates to a brake torque control device when an articulated-type support transportation vehicle in downhill. A vehicle downhill speed stabilizing device comprises a driving motor for providing power, wherein the driving motor is connected with a closed-type pump connected with a closed-type motor. The vehicle downhill speed stabilizing device is characterized in that a pressure output port of the closed-type pump is connected with an override control port of the closed-type motor through a reversing valve. The vehicle downhill speed stabilizing device provided by the utility model drives the closed-type motor to be at the maximal displacement by utilizing pressure of an oil supplying pump in the closed-type pump, guarantees the stability of the brake torque of a vehicle in downhill, controls the relative stability of the sliding speed of the vehicle, improves the vehicle safety performance, additionally prevents hydraulic impact caused by speed instability of the support transportation vehicle in downhill, and prolongs the service life of a hydraulic element.
Description
Technical field
The utility model belongs to engineering and technical field, particularly lock torque control setup during a kind of radial type bracket carrier descending.
Background technology
Bracket carrier is the static pressure transmission vehicle, four drive wheels are driven by motor, domestic adopted transmission scheme is the transmission scheme that the enclosed pump drives high-speed motor acceleration and deceleration device at present, high-speed motor is the piston motor that the high pressure automatic variable is controlled, discharge capacity and pressure correlation, the discharge capacity that is motor can increase along with the pressure of motor and automatically increase, the benefit of this motor is when the vehicle load increase causes motor pressure to raise, the discharge capacity of motor increases to increase propulsive effort automatically, automatically adapt to the variation of outer load without artificial adjusting, during the vehicle underloading, motor can advance at utmost speed in the small displacement vehicle, during the vehicle heavy duty, motor increases discharge capacity, with the high torque (HT) low velocity, advance.
But there is drawback in the motor that the high pressure automatic variable is controlled when descending, when the vehicle descending, motor rotates under the drive of wheel, becomes the pump operating mode, drives conversely the enclosed pump, and the enclosed pump is equivalent to motor under this operating mode, overcome the force of inertia of engine flywheel, the fluid flow direction is as shown in Fig. 1 arrow, and the force of inertia of engine flywheel makes the revolution of motor keep stable, now the pressure in closed line system keeps constant, just the partical gravity of balancing vehicle.When engine revolution increases, this balance is broken, because unexpected the increasing of the revolution of pump causes the pressure drop in closed line system very fast, in the time of pressure drop, the discharge capacity of motor is also corresponding turns down automatically, cause the lock torque of motor sharply to descend, the stress balance of vehicle is broken, and starts to accelerate to glide.After accelerating to glide, the motor revolution raises, the fluid that the fluid of discharge absorbs more than pump, and the pressure in closed line system starts to rise, and the discharge capacity of motor starts to increase, and lock torque strengthens, and vehicle starts reduction of speed until again reach balance.From macroscopic view, the phenomenon of this operating mode is that the speed of a motor vehicle is suddenly fast suddenly wayward slowly, and hydraulic efficiency impact is very big, affects the Hydraulic Elements life-span.
Summary of the invention
The utility model is for the deficiencies in the prior art, designed a kind of by change-over valve control the enclosed motor when the descending discharged to, guarantee that the discharge capacity of vehicle when descending is not subject to the impact of outer load, thereby guarantee that lock torque is relatively stable, guarantee that vehicle slip-down velocity is relatively stable.
The utility model is achieved through the following technical solutions:
A kind of vehicle descending speed stabilizing device, it comprises a CD-ROM drive motor that power is provided, described CD-ROM drive motor is connected with the enclosed pump, the enclosed pump is connected with the enclosed motor, it is characterized in that: the pressure output of described enclosed pump is controlled mouth by going beyond one's commission of a change-over valve and enclosed motor and is connected.
The utility model is by using slippage pump in the enclosed pump to enclosed motor supplementary pressure, thereby guarantees discharge capacity stable of enclosed motor, guarantees the stable of braking force moment.
Described change-over valve is hand change over valve, adopts hand change over valve can avoid the trouble on some electrical equipment control, reduces maintenance difficulty.
Described change-over valve is the two-bit triplet change-over valve, and the control needs according to actual, adopt the two-bit triplet change-over valve here.
In sum, the beneficial effects of the utility model are:
1) the utility model uses the pressure of slippage pump in the enclosed pump to drive the enclosed motor in max.cap., the lock torque while guaranteeing the vehicle descending stable, thus guarantee to control the relatively stable of vehicle slip-down velocity, improve the safety performance of vehicle.
Due to the not steady hydraulic efficiency impact caused of speed, increased the service life of Hydraulic Elements when 2) the utility model has been avoided the bracket carrier descending.
The accompanying drawing explanation
Below in conjunction with accompanying drawing, the utility model is described further.
In figure, 1 is the enclosed pump, and 11 is slippage pump, and 2 is change-over valve, and 3 is the enclosed motor, and 4 is CD-ROM drive motor.
The specific embodiment
A kind of vehicle descending speed stabilizing device as shown in Figure 1, it comprises a CD-ROM drive motor 4 that power is provided, described CD-ROM drive motor 4 is connected with enclosed pump 1, enclosed pump 1 is connected with enclosed motor 3, it is characterized in that: the pressure output of described enclosed pump 1 is controlled mouth by going beyond one's commission of a change-over valve 2 and enclosed motor 3 and is connected.
The utility model is by using slippage pump in the enclosed pump to enclosed motor supplementary pressure, thereby guarantees discharge capacity stable of enclosed motor, guarantees the stable of braking force moment.
Described change-over valve 2 is hand change over valve, adopts hand change over valve can avoid the trouble on some electrical equipment control, reduces maintenance difficulty.
Described change-over valve 2 is the two-bit triplet change-over valve, and the control needs according to actual, adopt the two-bit triplet change-over valve here.
In sum, the beneficial effects of the utility model are:
1) the utility model uses the pressure of slippage pump in the enclosed pump to drive the enclosed motor in max.cap., the lock torque while guaranteeing the vehicle descending stable, thus guarantee to control the relatively stable of vehicle slip-down velocity, improve the safety performance of vehicle.
Due to the not steady hydraulic efficiency impact caused of speed, increased the service life of Hydraulic Elements when 2) the utility model has been avoided the bracket carrier descending.
Claims (3)
1. a vehicle descending speed stabilizing device, it comprises a CD-ROM drive motor that power is provided, described CD-ROM drive motor is connected with the enclosed pump, the enclosed pump is connected with the enclosed motor, it is characterized in that: the pressure output of described enclosed pump is controlled mouth by going beyond one's commission of a change-over valve and enclosed motor and is connected.
2. a kind of vehicle descending speed stabilizing device according to claim 1, it is characterized in that: described change-over valve is hand change over valve.
3. according to claim 1 or the described a kind of vehicle descending speed stabilizing device of 2 any one, it is characterized in that: described change-over valve is the two-bit triplet change-over valve.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220665288 CN202952832U (en) | 2012-12-06 | 2012-12-06 | Vehicle downhill speed stabilizing device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220665288 CN202952832U (en) | 2012-12-06 | 2012-12-06 | Vehicle downhill speed stabilizing device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202952832U true CN202952832U (en) | 2013-05-29 |
Family
ID=48458424
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220665288 Expired - Fee Related CN202952832U (en) | 2012-12-06 | 2012-12-06 | Vehicle downhill speed stabilizing device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202952832U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110056758A (en) * | 2019-04-24 | 2019-07-26 | 吉林大学 | A kind of displacement-variable oil pump control device and its method under damped condition |
-
2012
- 2012-12-06 CN CN 201220665288 patent/CN202952832U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110056758A (en) * | 2019-04-24 | 2019-07-26 | 吉林大学 | A kind of displacement-variable oil pump control device and its method under damped condition |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| PE01 | Entry into force of the registration of the contract for pledge of patent right |
Denomination of utility model: Vehicle downhill speed stabilizing device Effective date of registration: 20140605 Granted publication date: 20130529 Pledgee: Jiangsu Jiangnan Rural Commercial Bank Limited by Share Ltd Pledgor: Changzhou Lianli Automation Technology Co., Ltd. Registration number: 2014990000436 |
|
| PLDC | Enforcement, change and cancellation of contracts on pledge of patent right or utility model | ||
| PC01 | Cancellation of the registration of the contract for pledge of patent right |
Date of cancellation: 20150529 Granted publication date: 20130529 Pledgee: Jiangsu Jiangnan Rural Commercial Bank Limited by Share Ltd Pledgor: Changzhou Lianli Automation Technology Co., Ltd. Registration number: 2014990000436 |
|
| PLDC | Enforcement, change and cancellation of contracts on pledge of patent right or utility model | ||
| PE01 | Entry into force of the registration of the contract for pledge of patent right |
Denomination of utility model: Vehicle downhill speed stabilizing device Effective date of registration: 20150604 Granted publication date: 20130529 Pledgee: Jiangsu Jiangnan Rural Commercial Bank Limited by Share Ltd Pledgor: Changzhou Lianli Automation Technology Co., Ltd. Registration number: 2015990000434 |
|
| PLDC | Enforcement, change and cancellation of contracts on pledge of patent right or utility model | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20130529 Termination date: 20171206 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |