CN105460820A - Cable-winding electrohydraulic control device and electric traction engineering vehicle - Google Patents
Cable-winding electrohydraulic control device and electric traction engineering vehicle Download PDFInfo
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- CN105460820A CN105460820A CN201610040363.7A CN201610040363A CN105460820A CN 105460820 A CN105460820 A CN 105460820A CN 201610040363 A CN201610040363 A CN 201610040363A CN 105460820 A CN105460820 A CN 105460820A
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Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B66—HOISTING; LIFTING; HAULING
- B66D—CAPSTANS; WINCHES; TACKLES, e.g. PULLEY BLOCKS; HOISTS
- B66D1/00—Rope, cable, or chain winding mechanisms; Capstans
- B66D1/02—Driving gear
- B66D1/08—Driving gear incorporating fluid motors
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B66—HOISTING; LIFTING; HAULING
- B66D—CAPSTANS; WINCHES; TACKLES, e.g. PULLEY BLOCKS; HOISTS
- B66D1/00—Rope, cable, or chain winding mechanisms; Capstans
- B66D1/28—Other constructional details
- B66D1/40—Control devices
- B66D1/48—Control devices automatic
Abstract
The invention relates to a cable-winding electrohydraulic control device and an electric traction engineering vehicle. The cable-winding electrohydraulic control device comprises a motor. The motor is connected with a cable winding device in a driving mode. A first pressure sensor is arranged on an oil way communicated with a left cavity of the motor, a second pressure sensor is arranged on an oil way communicated with a right cavity of the motor, and an electric proportional throttle valve is further arranged on an oil way where the motor is located. The first pressure sensor, the second pressure sensor and the electric proportional throttle valve are all electrically connected with a controller. In the cable winding state and the cable unwinding state, the controller can carry out judgment according to signals transmitted by the first pressure sensor and the second pressure sensor and controls the opening degree of the electric proportional throttle valve to adjust the backpressure of the motor. By means of the cable-winding electrohydraulic control device and the electric traction engineering vehicle, cable winding-unwinding tension can be adjusted in real time as required, the structure is simple, and cost is low.
Description
Technical field
The present invention relates to engineering machinery field, particularly relate to a kind of cable rolling electrofluidic control device and electric traction engineering truck.
Background technology
Electric traction engineering truck is a kind of using electric power as propulsion source, the engineering truck using cable as power transmission medium, and one end of cable is fixed on consumer unit through anchor, and the other end is fixed on car body after elevator is wound around.If vehicle travels away from consumer unit, then elevator passive rotation volume payout under cable tension effect; If vehicle travels near consumer unit, then elevator active rotation retracting cable under motor driving effect.Realize twisted and released of the cable by coil cable control device and follow vehicle running state change.
Existing coil cable control device General System is more complicated, and degradation of energy is comparatively large, and cost is higher, and take-up is without backpressure regulation, and cable easily produces fluctuation; Take-up, cable laying state switch moment, and the traffic grooming in opposite directions that system produces is improper, easily produce larger compression shock; Also have some coil cable control devices not regulate in real time cable stretch as required, need Non-follow control; Though also have some coil cable control devices to regulate cable stretch as required, more have employed pilot control mode, real-time is not good.
Summary of the invention
The object of the invention is to propose a kind of cable rolling electrofluidic control device and electric traction engineering truck, its structure is simple, can regulate folding and unfolding cable tensile force in real time.
For achieving the above object, the invention provides a kind of cable rolling electrofluidic control device, it comprises motor, described motor drives and connects spooling system, the oil circuit be communicated with the left chamber of described motor is provided with the first pressure sensor, the oil circuit be communicated with the right chamber of described motor is provided with the second pressure sensor, and the oil circuit at described motor place is also provided with electric proportional throttle valve, and described first pressure sensor, described second pressure sensor and described electric proportional throttle valve are all electrically connected controller; In take-up state and cable laying state, the signal that described controller all can transmit according to described first pressure sensor and described second pressure sensor judges, controls the opening of described electric proportional throttle valve, to regulate the back pressure of described motor.
One preferably or in embodiment, cable rolling electrofluidic control device comprises change-over valve, and two actuator ports of described change-over valve are communicated with the left chamber of described motor and right chamber respectively; Take-up state, described change-over valve at the first working position, the left chamber oil-feed of described motor, the right chamber oil return of described motor; Cable laying state, described change-over valve at the second working position, the right chamber oil-feed of described motor, the left chamber oil return of described motor.
One preferably or in embodiment, the right chamber of described motor is also communicated with fuel tank, cable laying state, and described change-over valve is at the second working position, two actuator ports of described change-over valve are communicated with, and the oil return in the left chamber of described motor enters the right chamber of described motor by described change-over valve.
One preferably or in embodiment, the oil circuit that the right chamber of described motor is communicated with fuel tank is provided with the first check valve, the oil inlet connection fuel tank of described first check valve, the oil outlet of described first check valve is communicated with the right chamber of described motor.
One preferably or in embodiment, the oil circuit that the right chamber that described electric proportional throttle valve is located at described motor is communicated with the actuator port of described change-over valve.
One preferably or in embodiment, the oil circuit that the left chamber of described motor is communicated with the actuator port of described change-over valve is provided with flow regulating valve.
One preferably or in embodiment, described change-over valve is pilot operated directional control valve, the oil circuit that described flow regulating valve is communicated with described change-over valve actuator port is other is connected to the first oil circuit control, described first oil circuit control is communicated with the first control end of described change-over valve, the first working position is in for controlling described change-over valve, the oil circuit that described flow regulating valve is communicated with the left chamber of described motor is other is connected to the second oil circuit control, described second oil circuit control is communicated with the second control end of described change-over valve, is in the second working position for controlling described change-over valve.
One preferably or in embodiment, the oil inlet of described change-over valve is communicated with fuel tank by driving pump, and described driving pump is automatically controlled controllable capacity pump.
One preferably or in embodiment, the oil circuit that described flow regulating valve is communicated with the actuator port of described change-over valve is provided with the 3rd pressure sensor, described first pressure sensor is located at the oil circuit that described flow regulating valve is communicated with the left chamber of described motor, described 3rd pressure sensor and described automatically controlled controllable capacity pump electrical connection controller; The signal that described controller can transmit according to described first pressure sensor and described 3rd pressure sensor judges, controls described driving capacity of pump, to regulate the rotating speed of described motor.
For achieving the above object, present invention also offers a kind of electric traction engineering truck, it comprises the cable rolling electrofluidic control device in above-mentioned any embodiment.
Based on technique scheme, the present invention at least has following beneficial effect:
Cable rolling electrofluidic control device provided by the invention is respectively equipped with the first pressure sensor and the second pressure sensor in motor both sides, first pressure sensor and the second pressure sensor are all electrically connected controller, in take-up state and cable laying state, the signal that controller all can transmit according to the first pressure sensor and the second pressure sensor judges, the difference of the pressure signal of the first pressure sensor and the second pressure sensor collection is the pressure reduction of motor, controller is according to the pressure reduction of motor, control the opening of electric proportional throttle valve, with the back pressure of governor motor, and then can regulate in real time folding and unfolding cable tension force as required, structure is simple, cost is low.
Accompanying drawing explanation
Accompanying drawing described herein is used to provide a further understanding of the present invention, and form a application's part, schematic description and description of the present invention, for explaining the present invention, does not form inappropriate limitation of the present invention.In the accompanying drawings:
Fig. 1 is the principle schematic of cable rolling electrofluidic control device provided by the invention.
Attached number in the figure:
1-motor; 2-spooling system; 3-first pressure sensor; 4-second pressure sensor; 5-electricity proportional throttle valve; 6-controller; 7-change-over valve; 8-fuel tank; 9-first check valve; 10-flow regulating valve; 11-the 3rd pressure sensor; 12-driving pump; 13-second check valve.
Detailed description of the invention
Below in conjunction with the accompanying drawing in the embodiment of the present invention, the technical scheme in embodiment is clearly and completely described.Obviously, described embodiment is only a part of embodiment of the present invention, instead of whole embodiments.Based on embodiments of the invention, those of ordinary skill in the art, not making the every other embodiment obtained under creative work prerequisite, belong to the scope of protection of the invention.
In describing the invention, it will be appreciated that, term " " center ", " longitudinal direction ", " transverse direction ", " front ", " afterwards ", " left side ", " right side ", " vertically ", " level ", " top ", " end ", " interior ", orientation or the position relationship of the instruction such as " outward " are based on orientation shown in the drawings or position relationship, only the present invention for convenience of description and simplified characterization, instead of indicate or imply that the device of indication or element must have specific orientation, with specific azimuth configuration and operation, therefore limiting the scope of the invention can not be interpreted as.
As shown in Figure 1, be the illustrative examples of cable rolling electrofluidic control device provided by the invention, in this illustrative examples, cable rolling electrofluidic control device comprises motor 1, and motor 1 drives and connects spooling system 2, and spooling system 2 rotates and is wound around cable; The oil circuit be communicated with the left chamber of motor 1 is provided with the first pressure sensor 3, first pressure sensor 3 is for detecting the pressure in the left chamber of motor 1, the oil circuit be communicated with the right chamber of motor 1 is provided with the second pressure sensor 4, second pressure sensor 4 is for detecting the pressure in the right chamber of motor 1, the oil circuit at motor 1 place is also provided with electric proportional throttle valve 5, first pressure sensor 3, second pressure sensor 4 and electric proportional throttle valve 5 is all electrically connected controller 6; In take-up state and cable laying state, the signal that controller 6 all can transmit according to the first pressure sensor 3 and the second pressure sensor 4 judges, the difference of the pressure signal that the first pressure sensor 3 and the second pressure sensor 4 gather is the pressure reduction of motor 1, controller 6 is according to the pressure reduction of motor 1, control the opening of electric proportional throttle valve 5, with the back pressure of governor motor 1, and then can regulate in real time folding and unfolding cable tension force as required.
Electric proportional throttle valve 5 one valve multipotency in above-described embodiment, can be used as the backpressure regulation of motor 1 when take-up or cable laying, and take-up status adjustment back pressure can reduce cable fluctuation, and cable laying status adjustment back pressure can regulate cable stretch and reduce fluctuation.
Cable rolling electrofluidic control device provided by the invention, can improve cable rolling controller performance, and improve the unfavorable factors such as cable fluctuation, system is succinct, cost is low, and is easy to integrated, has certain economic benefit and social benefit.
Cable rolling electrofluidic control device provided by the invention also comprises change-over valve 7, and two actuator ports of change-over valve 7 are communicated with the left chamber of motor 1 and right chamber respectively; The oil inlet of change-over valve 7 is communicated with fuel tank 8 by driving pump 12, and the oil outlet of change-over valve 7 is communicated with fuel tank 8, and the right chamber of motor 1 is also communicated with fuel tank 8.On the oil circuit that the right chamber that electricity proportional throttle valve 5 is located at motor 1 is communicated with the actuator port of change-over valve 7.
Change-over valve 7 has two working positions, take-up state, change-over valve 7 is at the first working position, the oil inlet of change-over valve 7 is communicated with the left chamber of motor 1 by an actuator port, the left chamber oil-feed of motor 1, the right chamber of motor 1 is communicated with the oil outlet of change-over valve 7, the right chamber oil return of motor 1 by another actuator port of change-over valve 7; Cable laying state, change-over valve 7 is at the second working position, and two actuator ports of change-over valve 7 are communicated with, the oil inlet of change-over valve 7 is communicated with oil outlet, the right chamber oil-feed of motor 1, the left chamber oil return of motor 1, the oil return in the left chamber of motor 1 enters the right chamber of motor 1 by two actuator ports of change-over valve 7.
The oil outlet that the oil inlet that the oil circuit that the right chamber of motor 1 is communicated with fuel tank 8 is provided with the first check valve 9, first check valve 9 is communicated with fuel tank 8, first check valve 9 is communicated with the right chamber of motor 1.First check valve 9 can be closed circuit repairing in payout process, prevents the oil in the right chamber of motor 1 from flowing back to fuel tank 8.
The oil circuit that the left chamber of motor 1 is communicated with the actuator port of change-over valve 7 is provided with flow regulating valve 10.Change-over valve 7 is pilot operated directional control valve, the oil circuit that flow regulating valve 10 is communicated with change-over valve 7 actuator port is other is connected to the first oil circuit control, first oil circuit control is communicated with the first control end of change-over valve 7, the first working position is in for controlling change-over valve 7, the oil circuit that flow regulating valve 10 is communicated with the left chamber of motor 1 is other is connected to the second oil circuit control, second oil circuit control is communicated with the second control end of change-over valve 7, is in the second working position for controlling change-over valve 7.
Take-up state, the upstream pressure of flow regulating valve 10 is greater than downstream pressure, and change-over valve 7 is in the first working position; Hydraulic oil passes through change-over valve 7, flow regulating valve 10, motor 1, electric proportional throttle valve 5, pilot operated directional control valve 7 successively, last oil sump tank 8.
Cable laying state, motor 1 is inverted to pump under external force, hydraulic oil sucks from the right chamber of motor 1, discharge from the left chamber of motor 1, now the upstream pressure of flow regulating valve 10 is less than downstream pressure, change-over valve 7 automatically switches to the second working position instantaneously, and hydraulic efficiency pressure system forms closed circuit, and hydraulic oil is discharged from motor 1 and again entered motor 1 by flow regulating valve 10, change-over valve 7, electric proportional throttle valve 5 successively; First check valve 9 can be conducive to, for closed circuit replenisher force feed, preventing motor 1 from inhaling sky.
On the basis of the various embodiments described above, the oil inlet of change-over valve 7 is communicated with fuel tank 8 by driving pump 12, and driving pump 12 can adopt automatically controlled controllable capacity pump.The oil circuit that flow regulating valve 10 is communicated with the actuator port of change-over valve 7 is provided with the 3rd pressure sensor the 11, three pressure sensor 11 for detecting the upstream pressure of flow regulating valve 10; First pressure sensor 3 is located at the oil circuit that flow regulating valve 10 is communicated with the left chamber of motor 1, and the first pressure sensor 3 is for detecting the downstream pressure of flow regulating valve 10; 3rd pressure sensor 11 and driving pump 12 are electrically connected controller 6; The signal that controller 6 can transmit according to the first pressure sensor 3 and the 3rd pressure sensor 11 judges, the difference of the first pressure sensor 3 and the 3rd pressure sensor 11 collection signal is the pressure reduction of flow regulating valve 10; Controller 6 controls the discharge capacity of driving pump 12, with the rotating speed of governor motor 1 according to the pressure reduction of flow regulating valve 10.
One preferably or in embodiment; the oil circuit that driving pump 12 is communicated with change-over valve 7 can also be provided with the second check valve 13; the oil inlet of the second check valve 13 is communicated with driving pump 12; the oil outlet of the second check valve 13 is communicated with change-over valve 7; second check valve 13 can prevent fluid from refluxing, protection driving pump 12.
In each embodiment above-mentioned, change-over valve 7 can be two-position four-way pilot operated directional control valve, first actuator port A of change-over valve 7 is communicated with the left chamber of motor 1, second actuator port B of change-over valve 7 is communicated with the right chamber of motor 1, the oil inlet P of change-over valve 7 is communicated with driving pump 12, the oil outlet T of change-over valve 7 is communicated with fuel tank 8, change-over valve 7 is at the first working position, the oil inlet P of change-over valve 7 is communicated with the first actuator port A, the oil outlet T of change-over valve 7 is communicated with the second actuator port B, change-over valve 7 is at the second working position, first actuator port A of change-over valve 7 is communicated with the second actuator port B, the oil inlet P of change-over valve 7 is communicated with oil outlet T.Flow regulating valve 10 can produce suitable pressure drop, drives the commutation of two-position four-way pilot operated directional control valve, can according to folding and unfolding cable state auto-switching working position, and take-up forms open circuit, and cable laying forms closed circuit.
In each embodiment above-mentioned, controller 6 can gather the signal of each pressure sensor, and controls driving pump 12 and electric proportional throttle valve 5.
Below in conjunction with the specific embodiment shown in Fig. 1, describe the operating process in take-up state and anti-cable state of cable rolling electrofluidic control device in detail:
Take-up state: now the upstream pressure of flow regulating valve 10 is greater than downstream pressure, change-over valve 7 is in the first working position; Hydraulic oil exports successively by the second check valve 13, change-over valve 7, flow regulating valve 10, motor 1, electric proportional throttle valve 5, change-over valve 7 from driving pump 12, last oil sump tank 8; The differential pressure conditions of the calculated signals gained current throttle valve 10 that controller 6 gathers according to the first pressure sensor 3 and the 3rd pressure sensor 11, control the discharge capacity of driving pump 12 with the rotating speed of governor motor 1, the differential pressure conditions of the calculated signals gained present motor 1 that controller 6 also gathers according to the first pressure sensor 3 and the second pressure sensor 4 simultaneously, control the opening of electric proportional throttle valve 5, with governor motor 1 back pressure, namely regulate cable stretch.
Cable laying state: motor 1 is inverted to pump under external force, hydraulic oil sucks from the right chamber of motor 1, discharge from the left chamber of motor 1, now the upstream pressure of flow regulating valve 10 is less than downstream pressure, change-over valve 7 automatically switches to the second working position instantaneously, hydraulic efficiency pressure system forms closed circuit, and hydraulic oil is discharged successively by flow regulating valve 10, change-over valve 7, electric proportional throttle valve 5 from motor 1, again enters motor 1; Arrange the first check valve 9 to be convenient to, for closed circuit replenisher force feed, prevent motor 1 from inhaling sky; Fuel tank 8 is led in the outlet of driving pump 12; Controller 6 calculates the differential pressure conditions (namely the upstream pressure of flow regulating valve 10 is less than downstream pressure) of gained current throttle valve 10 according to gathering, the discharge capacity controlling driving pump 12 is minimum, controller 6 is according to the differential pressure conditions of present motor 1, control the opening of electric proportional throttle valve 5, with governor motor 1 back pressure, namely regulate cable stretch.
In addition, motor 1 hand of rotation can directly be judged by the first pressure sensor 3 and the 3rd pressure sensor 11, i.e. take-up, cable laying state; If the 3rd pressure sensor 11 detected value is greater than the first pressure sensor 3, be then take-up state; If the 3rd pressure sensor 11 detected value is less than the first pressure sensor 3, be then cable laying state.
Present invention also offers a kind of electric traction engineering truck, it comprises the cable rolling electrofluidic control device in above-mentioned any embodiment.
By the description of each embodiment above-mentioned, can derive: cable rolling electrofluidic control device provided by the invention, possess the control of cable rolling motor rotary speed, back pressure control and follow the critical functions such as twisted and released of the cable automatic reverse, make vehicle in whole driving process, easily can realize the active take-up of spooling system and passive cable laying, and regulate in real time folding and unfolding cable tension force as required, and then it is synchronous to realize cable rolling; And system loss and compression shock little, system is succinct, cost is low.
In describing the invention; it will be appreciated that; the word such as " first ", " second ", " the 3rd " is used to limit parts; be only used to be convenient to distinguish above-mentioned parts; as there is no Stated otherwise; above-mentioned word does not have particular meaning, therefore can not be interpreted as limiting the scope of the invention.
Finally should be noted that: above embodiment is only in order to illustrate that technical scheme of the present invention is not intended to limit; Although with reference to preferred embodiment to invention has been detailed description, those of ordinary skill in the field are to be understood that: still can modify to the specific embodiment of the present invention or carry out equivalent replacement to portion of techniques feature; And not departing from the spirit of technical solution of the present invention, it all should be encompassed in the middle of the technical scheme scope of request of the present invention protection.
Claims (10)
1. a cable rolling electrofluidic control device, it is characterized in that: comprise motor (1), described motor (1) drives and connects spooling system (2), the oil circuit be communicated with the left chamber of described motor (1) is provided with the first pressure sensor (3), the oil circuit be communicated with the right chamber of described motor (1) is provided with the second pressure sensor (4), the oil circuit at described motor (1) place is also provided with electric proportional throttle valve (5), described first pressure sensor (3), described second pressure sensor (4) and described electric proportional throttle valve (5) are all electrically connected controller (6), in take-up state and cable laying state, the signal that described controller (6) all can transmit according to described first pressure sensor (3) and described second pressure sensor (4) judges, control the opening of described electric proportional throttle valve (5), to regulate the back pressure of described motor (1).
2. cable rolling electrofluidic control device as claimed in claim 1, it is characterized in that: comprise change-over valve (7), two actuator ports of described change-over valve (7) are communicated with the left chamber of described motor (1) and right chamber respectively; Take-up state, described change-over valve (7) at the first working position, the left chamber oil-feed of described motor (1), the right chamber oil return of described motor (1); Cable laying state, described change-over valve (7) at the second working position, the right chamber oil-feed of described motor (1), the left chamber oil return of described motor (1).
3. cable rolling electrofluidic control device as claimed in claim 2, it is characterized in that: the right chamber of described motor (1) is also communicated with fuel tank (8), cable laying state, described change-over valve (7) is at the second working position, two actuator ports of described change-over valve (7) are communicated with, and the oil return in the left chamber of described motor (1) enters the right chamber of described motor (1) by described change-over valve (7).
4. cable rolling electrofluidic control device as claimed in claim 3, it is characterized in that: the oil circuit that the right chamber of described motor (1) is communicated with fuel tank (8) is provided with the first check valve (9), the oil inlet of described first check valve (9) is communicated with fuel tank (8), and the oil outlet of described first check valve (9) is communicated with the right chamber of described motor (1).
5. cable rolling electrofluidic control device as claimed in claim 2, is characterized in that: the oil circuit that the right chamber that described electric proportional throttle valve (5) is located at described motor (1) is communicated with the actuator port of described change-over valve (7).
6. cable rolling electrofluidic control device as claimed in claim 2, is characterized in that: the oil circuit that the left chamber of described motor (1) is communicated with the actuator port of described change-over valve (7) is provided with flow regulating valve (10).
7. cable rolling electrofluidic control device as claimed in claim 6, it is characterized in that: described change-over valve (7) is pilot operated directional control valve, the oil circuit that described flow regulating valve (10) is communicated with described change-over valve (7) actuator port is other is connected to the first oil circuit control, described first oil circuit control is communicated with the first control end of described change-over valve (7), the first working position is in for controlling described change-over valve (7), the oil circuit that described flow regulating valve (10) is communicated with the left chamber of described motor (1) is other is connected to the second oil circuit control, described second oil circuit control is communicated with the second control end of described change-over valve (7), the second working position is in for controlling described change-over valve (7).
8. cable rolling electrofluidic control device as claimed in claim 6, is characterized in that: the oil inlet of described change-over valve (7) is communicated with fuel tank (8) by driving pump (12), and described driving pump (12) is automatically controlled controllable capacity pump.
9. cable rolling electrofluidic control device as claimed in claim 8, it is characterized in that: the oil circuit that described flow regulating valve (10) is communicated with the actuator port of described change-over valve (7) is provided with the 3rd pressure sensor (11), described first pressure sensor (3) is located at the oil circuit that described flow regulating valve (10) is communicated with the left chamber of described motor (1), described 3rd pressure sensor (11) and described automatically controlled controllable capacity pump electrical connection controller (6); The signal that described controller (6) can transmit according to described first pressure sensor (3) and described 3rd pressure sensor (11) judges, control the discharge capacity of described driving pump (12), to regulate the rotating speed of described motor (1).
10. an electric traction engineering truck, is characterized in that: comprise the cable rolling electrofluidic control device as described in any one of claim 1-9.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610040363.7A CN105460820B (en) | 2016-01-21 | 2016-01-21 | Cable rolling electrofluidic control device and electric propulsion engineering truck |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201610040363.7A CN105460820B (en) | 2016-01-21 | 2016-01-21 | Cable rolling electrofluidic control device and electric propulsion engineering truck |
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| CN105460820A true CN105460820A (en) | 2016-04-06 |
| CN105460820B CN105460820B (en) | 2018-05-01 |
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| CN110836202A (en) * | 2019-12-05 | 2020-02-25 | 浙江大学 | Hydraulic source load self-adaptive system and self-adaptive control method thereof |
| CN112645163A (en) * | 2020-11-10 | 2021-04-13 | 中国煤炭科工集团太原研究院有限公司 | Cable winding device and control method of cable winding device |
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