CN107605829A - A kind of hydraulic closed multi-motor speed control system - Google Patents
A kind of hydraulic closed multi-motor speed control system Download PDFInfo
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- CN107605829A CN107605829A CN201711043246.7A CN201711043246A CN107605829A CN 107605829 A CN107605829 A CN 107605829A CN 201711043246 A CN201711043246 A CN 201711043246A CN 107605829 A CN107605829 A CN 107605829A
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- hydraulic pump
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- 239000000446 fuel Substances 0.000 claims abstract description 17
- 239000002828 fuel tank Substances 0.000 claims abstract description 17
- 230000008676 import Effects 0.000 claims abstract description 7
- 239000012530 fluid Substances 0.000 claims abstract description 5
- 230000008901 benefit Effects 0.000 description 3
- 238000001816 cooling Methods 0.000 description 3
- 230000008859 change Effects 0.000 description 2
- 239000007788 liquid Substances 0.000 description 2
- 230000005540 biological transmission Effects 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000003068 static effect Effects 0.000 description 1
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Abstract
The invention provides a kind of hydraulic closed multi-motor speed control system,Including the first groups of motors,Second groups of motors,Closed type hydraulic pump,Slippage pump,Fuel tank and control valve,The import of slippage pump is connected with fuel tank,The outlet of slippage pump is connected with closed type hydraulic pump,When control valve positioned at it is upper when,Closed type hydraulic pump is by connecting pipe to the first groups of motors fuel feeding,Closed type hydraulic pump is by connecting pipe and control valve to the second groups of motors fuel feeding,The oil return of first groups of motors returns to closed type hydraulic pump by connecting pipe,The oil return of second groups of motors returns to closed type hydraulic pump by connecting pipe and control valve,When control valve positioned at it is the next when,Closed type hydraulic pump is by connecting pipe to the first groups of motors fuel feeding,The oil return of first groups of motors returns to closed type hydraulic pump by connecting pipe,Two hydraulic fluid ports of the second groups of motors are connected by control valve,Slippage pump is also connected with control valve,Slippage pump is to fuel tank oil suction by connecting pipe control valve to the second groups of motors repairing.
Description
Technical field
The invention belongs to control system field, is more particularly to a kind of hydraulic closed multi-motor speed control system.
Background technology
Static pressure transmission technology is in engineering machinery field using more and more, and closed system is so that its integrated level is high, system architecture
Simply, many advantages, such as compact, efficiency high, it is widely used, especially hydraulic closed multi-motor system is also applied increasingly
It is more.As shown in figure 1, existing hydraulic closed multi-motor system architecture includes the first groups of motors (one or more motors) 1, enclosed
Hydraulic pump 2, slippage pump 3, the first Fill valve 4, the second Fill valve 5, the second groups of motors (one or more motors) 6 and fuel tank 7.Its
Operation principle is as follows：Closed type hydraulic pump 2 is by oil-out to the groups of motors (one of the first groups of motors (one or more motors) 1, second
Individual or multiple motors) the driving hydraulic motor motion of 6 fuel feeding, the first groups of motors (one or more motors) 1 and the second groups of motors (one
Individual or multiple motors) 6 oil return is returned directly to the oil inlet of closed type hydraulic pump 2, with this iterative cycles, because hydraulic system has one
Fixed leakage, while some flow takes hydraulic system out of by cooling system, therefore slippage pump 3 is constantly to fuel tank 7
Oil suction is by the first Fill valve 4, the second Fill valve 5 to hydraulic system repairing.Due to the first groups of motors (one or more motors)
1st, the second groups of motors (one or more motors) 6 can not realize the switching of work groups of motors always involved in work, therefore existing
Hydraulic closed multi-motor system can not realize the switching speed governing of work groups of motors.
The content of the invention
It is an object of the invention to provide a kind of hydraulic closed multi-motor speed for the switching speed governing that can realize work groups of motors
Spend control system.
According to an aspect of the invention, there is provided a kind of hydraulic closed multi-motor speed control system, including the first horse
Up to group, the second groups of motors, closed type hydraulic pump, slippage pump, fuel tank and control valve,
The import of the slippage pump is connected with the fuel tank, and the outlet of the slippage pump is connected with the closed type hydraulic pump
It is logical,
When control valve positioned at it is upper when, the closed type hydraulic pump is by connecting pipe to the first groups of motors fuel feeding, institute
Closed type hydraulic pump is stated by connecting pipe and the control valve to the second groups of motors fuel feeding, the oil return of first groups of motors
The closed type hydraulic pump is returned to by connecting pipe, the oil return of second groups of motors is returned by connecting pipe and the control valve
To the closed type hydraulic pump,
When control valve positioned at it is the next when, the closed type hydraulic pump is by connecting pipe to the first groups of motors fuel feeding, institute
The oil return for stating the first groups of motors returns to the closed type hydraulic pump by connecting pipe, and two hydraulic fluid ports of second groups of motors pass through
The control valve is connected, and the slippage pump is also connected with the control valve, and the slippage pump passes through company to the fuel tank oil suction
Control valve described in adapter road is to the second groups of motors repairing.
In some embodiments, the slippage pump is connected by two-way connecting pipe with the closed type hydraulic pump, institute
State and be respectively equipped with the first Fill valve and the second Fill valve on the two-way connecting pipe that slippage pump is connected with the closed type hydraulic pump.
In some embodiments, first Fill valve and second Fill valve are check valve, first repairing
The import of valve and second Fill valve is connected with the slippage pump respectively, first Fill valve and second Fill valve
Outlet be connected respectively with the closed type hydraulic pump.
Its advantage is：The present invention can realize that control hydraulic system participates in work by the switching control of control valve
Groups of motors number, because the flow of closed type hydraulic pump is mobile, and the quantity of drive motor can pass through the switching of control valve
It is controlled, therefore the change of a variety of speed for this system realized, realize speed-regulating function.
Brief description of the drawings
Fig. 1 is the structural representation of existing hydraulic closed multi-motor system；
Fig. 2 is that a kind of hydraulic closed multi-motor speed control system of an embodiment of the present invention is in a kind of working condition
Structural representation；
Fig. 3 is the structural representation that hydraulic closed multi-motor speed control system shown in Fig. 2 is in another working condition
Figure.
Embodiment
Fig. 2 and Fig. 3 schematically shows the hydraulic closed multi-motor speed control system of one embodiment of the present invention
System.As shown in Figures 2 and 3, the hydraulic closed multi-motor speed control system includes the first groups of motors, the second groups of motors, enclosed
Hydraulic pump, slippage pump, fuel tank and control valve.
First groups of motors 1 is provided with one or more motors, and the second groups of motors 6 also is provided with one or more motors.Slippage pump 3
Import be connected with fuel tank 7, the outlet of slippage pump 3 is connected with closed type hydraulic pump 2.Slippage pump 3 passes through two-way connecting pipe
It is connected with closed type hydraulic pump 2, the first benefit is respectively equipped with the two-way connecting pipe that slippage pump 3 is connected with closed type hydraulic pump 2
The Fill valve 5 of fuel tap 4 and second.First Fill valve 4 and the second Fill valve 5 are check valve, the first Fill valve 4 and the second Fill valve 5
Import be connected respectively with slippage pump 3, the outlet of the first Fill valve 4 and the second Fill valve 5 is connected with closed type hydraulic pump 2 respectively
It is logical.When control valve 8 positioned at it is upper when, for closed type hydraulic pump 2 by connecting pipe to the fuel feeding of the first groups of motors 1, closed type hydraulic pump 2 is logical
Cross connecting pipe and control valve 8 and enclosed liquid is returned to by connecting pipe to the fuel feeding of the second groups of motors 6, the oil return of the first groups of motors 1
Press pump 2, the oil return of the second groups of motors 6 return to closed type hydraulic pump 2 by connecting pipe and control valve 8.When control valve 8 is positioned at bottom
When, closed type hydraulic pump 2 is returned to by connecting pipe to the fuel feeding of the first groups of motors 1, the oil return of the first groups of motors 1 by connecting pipe
Closed type hydraulic pump 2, two hydraulic fluid ports of the second groups of motors 6 are connected by control valve 8, and slippage pump 3 is also connected with control valve 8, are mended
Oil pump 3 is to the oil suction of fuel tank 7 by connecting pipe control valve 8 to the repairing of the second groups of motors 6.
As shown in Fig. 2 when control valve 8 is in and switches to upper, closed type hydraulic pump 2 is by oil-out to the first groups of motors
1 fuel feeding while multigroup hydraulic motor is driven to move to the fuel feeding of the second groups of motors 6 by control valve 8, the first groups of motors 1 and second
The oil return of groups of motors 6 is returned directly to the oil inlet of closed type hydraulic pump 2 by control valve 8, successively iterative cycles, due to hydraulic pressure system
System, hydraulic system has a certain amount of leakage, while some flow takes hydraulic system, therefore repairing out of by cooling system
Pump 3 constantly to the oil suction of fuel tank 7 by the first Fill valve 4 and the second Fill valve 5 to hydraulic system repairing.
As shown in figure 3, when control valve 8 switches to bottom, the second groups of motors 6 is completely cut through by control valve 8 is not involved in work
Make, but realize that two actuator ports turn on inside groups of motors by control valve 8, and constantly inhaled by slippage pump 3 to fuel tank 7
Oil, to the repairing of the second groups of motors 6, is emptied by control valve 8 when avoiding motor dragged inside motor.Closed type hydraulic pump 2 is by going out
Hydraulic fluid port is only returned directly to the oil inlet of closed type hydraulic pump 2 to the fuel feeding of the first groups of motors 1, the oil return of the first groups of motors 1, this time follows repeatedly
Ring, because hydraulic system has a certain amount of leakage, while some flow takes hydraulic system out of by cooling system, therefore
Slippage pump 3 constantly to the oil suction of fuel tank 7 by the first Fill valve 4, the second Fill valve 5 to hydraulic system repairing.
By the switching control of control valve 8, it can realize that control hydraulic system participates in the group number of the motor of work, due to liquid
The flow of press pump 2 is certain, and the quantity of drive motor can be controlled by the switching of control valve 8, therefore can be realized
The change of a variety of speed of hydraulic system, realizes speed-regulating function.
Above-described is only some embodiments of the present invention.For those of ordinary skill in the art, do not taking off
On the premise of conceiving from the invention, various modifications and improvements can be made, these belong to protection scope of the present invention.
Claims (3)
1. a kind of hydraulic closed multi-motor speed control system, it is characterised in that including the first groups of motors, the second groups of motors, close
Formula hydraulic pump, slippage pump, fuel tank and control valve,
The import of the slippage pump is connected with the fuel tank, and the outlet of the slippage pump is connected with the closed type hydraulic pump,
When control valve positioned at it is upper when, the closed type hydraulic pump by connecting pipe to the first groups of motors fuel feeding, it is described to close
Formula hydraulic pump is passed through by connecting pipe and the control valve to the second groups of motors fuel feeding, the oil return of first groups of motors
Connecting pipe returns to the closed type hydraulic pump, and the oil return of second groups of motors returns to institute by connecting pipe and the control valve
State closed type hydraulic pump,
When control valve positioned at it is the next when, the closed type hydraulic pump by connecting pipe to the first groups of motors fuel feeding, described the
The oil return of one groups of motors returns to the closed type hydraulic pump by connecting pipe, and two hydraulic fluid ports of second groups of motors pass through described
Control valve is connected, and the slippage pump is also connected with the control valve, and the slippage pump passes through connecting tube to the fuel tank oil suction
Control valve described in road is to the second groups of motors repairing.
2. hydraulic closed multi-motor speed control system according to claim 1, it is characterised in that the slippage pump passes through
Two-way connecting pipe is connected with the closed type hydraulic pump, and the two-way that the slippage pump is connected with the closed type hydraulic pump is connected
The first Fill valve and the second Fill valve are respectively equipped with pipeline.
3. hydraulic closed multi-motor speed control system according to claim 2, it is characterised in that first Fill valve
Be check valve with second Fill valve, the import of first Fill valve and second Fill valve respectively with the slippage pump
It is connected, the outlet of first Fill valve and second Fill valve is connected with the closed type hydraulic pump respectively.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711043246.7A CN107605829A (en) | 2017-10-31 | 2017-10-31 | A kind of hydraulic closed multi-motor speed control system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711043246.7A CN107605829A (en) | 2017-10-31 | 2017-10-31 | A kind of hydraulic closed multi-motor speed control system |
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| Publication Number | Publication Date |
|---|---|
| CN107605829A true CN107605829A (en) | 2018-01-19 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201711043246.7A Pending CN107605829A (en) | 2017-10-31 | 2017-10-31 | A kind of hydraulic closed multi-motor speed control system |
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Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH06265014A (en) * | 1993-03-08 | 1994-09-20 | Hitachi Constr Mach Co Ltd | Hydraulic closed circuit device and speed change method of this device |
| WO2006109571A1 (en) * | 2005-04-05 | 2006-10-19 | Hitachi Construction Machinery Co., Ltd. | Hst traveling system of work machine |
| CN202465155U (en) * | 2012-02-28 | 2012-10-03 | 太原重工股份有限公司 | Wire rope-reeving control system for crawling cranes |
| CN102837750A (en) * | 2012-01-11 | 2012-12-26 | 中国矿业大学 | Hydraulic driving moving platform of coal mine rescuing robot |
| CN202806376U (en) * | 2012-01-11 | 2013-03-20 | 中国矿业大学 | Hydraulic drive type mine environment detection robot moving platform |
| DE102013222744B3 (en) * | 2013-11-08 | 2015-02-19 | Danfoss Power Solutions Gmbh & Co. Ohg | COMPACT HYDRAULIC DRIVE UNIT AND METHOD OF OPERATING THEREOF |
| CN207634413U (en) * | 2017-10-31 | 2018-07-20 | 江苏谷登工程机械装备有限公司 | A kind of hydraulic closed multi-motor speed control system |
-
2017
- 2017-10-31 CN CN201711043246.7A patent/CN107605829A/en active Pending
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH06265014A (en) * | 1993-03-08 | 1994-09-20 | Hitachi Constr Mach Co Ltd | Hydraulic closed circuit device and speed change method of this device |
| WO2006109571A1 (en) * | 2005-04-05 | 2006-10-19 | Hitachi Construction Machinery Co., Ltd. | Hst traveling system of work machine |
| CN102837750A (en) * | 2012-01-11 | 2012-12-26 | 中国矿业大学 | Hydraulic driving moving platform of coal mine rescuing robot |
| CN202806376U (en) * | 2012-01-11 | 2013-03-20 | 中国矿业大学 | Hydraulic drive type mine environment detection robot moving platform |
| CN202465155U (en) * | 2012-02-28 | 2012-10-03 | 太原重工股份有限公司 | Wire rope-reeving control system for crawling cranes |
| DE102013222744B3 (en) * | 2013-11-08 | 2015-02-19 | Danfoss Power Solutions Gmbh & Co. Ohg | COMPACT HYDRAULIC DRIVE UNIT AND METHOD OF OPERATING THEREOF |
| CN207634413U (en) * | 2017-10-31 | 2018-07-20 | 江苏谷登工程机械装备有限公司 | A kind of hydraulic closed multi-motor speed control system |
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