CN109084018B - Shift valve rod position control device and engineering machinery vehicle - Google Patents
Shift valve rod position control device and engineering machinery vehicle Download PDFInfo
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- CN109084018B CN109084018B CN201811128287.0A CN201811128287A CN109084018B CN 109084018 B CN109084018 B CN 109084018B CN 201811128287 A CN201811128287 A CN 201811128287A CN 109084018 B CN109084018 B CN 109084018B
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- valve rod
- linear
- signal
- motor
- valve
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16H—GEARING
- F16H61/00—Control functions within control units of change-speed- or reversing-gearings for conveying rotary motion ; Control of exclusively fluid gearing, friction gearing, gearings with endless flexible members or other particular types of gearing
- F16H61/26—Generation or transmission of movements for final actuating mechanisms
- F16H61/28—Generation or transmission of movements for final actuating mechanisms with at least one movement of the final actuating mechanism being caused by a non-mechanical force, e.g. power-assisted
- F16H61/32—Electric motors actuators or related electrical control means therefor
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16H—GEARING
- F16H59/00—Control inputs to control units of change-speed-, or reversing-gearings for conveying rotary motion
- F16H59/02—Selector apparatus
- F16H59/0278—Constructional features of the selector lever, e.g. grip parts, mounting or manufacturing
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16H—GEARING
- F16H61/00—Control functions within control units of change-speed- or reversing-gearings for conveying rotary motion ; Control of exclusively fluid gearing, friction gearing, gearings with endless flexible members or other particular types of gearing
- F16H61/24—Providing feel, e.g. to enable selection
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16H—GEARING
- F16H61/00—Control functions within control units of change-speed- or reversing-gearings for conveying rotary motion ; Control of exclusively fluid gearing, friction gearing, gearings with endless flexible members or other particular types of gearing
- F16H61/26—Generation or transmission of movements for final actuating mechanisms
- F16H61/28—Generation or transmission of movements for final actuating mechanisms with at least one movement of the final actuating mechanism being caused by a non-mechanical force, e.g. power-assisted
- F16H61/32—Electric motors actuators or related electrical control means therefor
- F16H2061/326—Actuators for range selection, i.e. actuators for controlling the range selector or the manual range valve in the transmission
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- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Gear-Shifting Mechanisms (AREA)
Abstract
The invention relates to a hydraulic transmission gear shifting device, which aims to solve the problems of large operation resistance and poor operation comfort of the existing mechanical-hydraulic gear shifting; the shift valve rod position control device comprises a hydraulic variable-speed shift valve, a valve rod driving device, a linear displacement sensor for detecting the position of a valve rod and a shift handle for shift operation, wherein the valve rod driving device comprises a linear motor and a motor driving controller for driving the linear motor to work; the motor driving controller drives the linear motor according to the gear shifting signal and the valve rod position signal, and the linear motor pushes the valve rod to move axially to a preset position corresponding to the gear shifting signal through the valve rod horizontal pushing device. The invention uses the linear motor to replace a manual mechanical connecting rod, reduces the design and assembly difficulty, improves the reliability, lightens the weight of the whole device and reduces the cost.
Description
Technical Field
The invention relates to a shifting device of a hydraulic transmission, in particular to a shifting valve rod position control device and an engineering machinery vehicle.
Background
At present, engineering machinery and various vehicles widely use a hydraulic transmission, and the shift operation control of the common hydraulic transmission is mechanical-hydraulic shift. A mechanical link mechanism or a flexible shaft is used for directly pushing and pulling a valve rod of the hydraulic variable speed valve to control the on-off of a main control oil path of the hydraulic valve so as to realize gear shifting. The operating mode has a simple structure, but has the technical problems of large operating resistance, poor operating comfort, high labor intensity of frequent gear shifting, certain fit clearance of the mechanism, easy generation of certain idle stroke during gear shifting operation and inaccurate gear shifting.
Disclosure of Invention
The invention aims to solve the technical problems of large gear shifting control resistance and poor control comfort of the existing mechanical-hydraulic gear shifting, and provides a gear shifting valve rod position control device which is small in gear shifting control resistance, comfortable to control and accurate in gear and an engineering mechanical vehicle with the device.
The technical scheme for realizing the purpose of the invention is as follows: the utility model provides a gear shift valve pole position control device, includes hydraulic variable speed gear shift valve, its characterized in that includes:
the valve rod driving device comprises a linear motor and a motor driving controller for driving the linear motor to work, and a linear moving end of the linear motor is connected with a valve rod of the hydraulic variable-speed gear shift valve through a valve rod horizontal pushing device;
the linear displacement sensor is connected with the motor drive controller and used for detecting the position of a valve rod of the hydraulic variable-speed gear shifting valve and transmitting a valve rod position signal to the motor drive controller;
the gear handle is connected with the motor drive controller and is used for gear shifting operation and transmitting a gear shifting signal to the motor drive controller;
the motor driving controller drives the linear motor according to the gear shifting signal and the valve rod position signal, and the linear motor pushes the valve rod to move axially to a preset position corresponding to the gear shifting signal through the valve rod horizontal pushing device.
In the gear shifting valve rod position control device, the valve rod horizontal pushing device comprises two linear guide rails axially parallel to the valve rod and a parallel push rod arranged on the linear guide rails and capable of sliding along the linear guide rails, and a movable guide rod of the linear displacement sensor, a linear moving end of the linear motor and the valve rod are connected with the parallel push rod.
In the shift valve rod position control device, the linear motor is a linear stepping motor, the parallel push rod is provided with a long hole, the length direction of the long hole is parallel to the axial direction of the valve rod or coincides with the axial direction of the valve rod, and the valve rod is hinged with the parallel push rod through a bolt inserted in the long hole.
In the gear shifting valve rod position control device, the hydraulic variable speed gear shifting valve is provided with a steel ball spring self-locking mechanism for realizing gear self-locking, and the valve rod driving device drives the parallel push rods to reversely rotate and drive the parallel push rods to reversely move so that the bolt is positioned at the center of the long hole after pushing the parallel push rods to a preset position according to a gear shifting signal and a valve rod position signal.
In the shift valve rod position control device, the length direction of the parallel push rod is perpendicular to the linear guide rail, the valve rod is connected with one end of the parallel push rod, the movable guide rod of the linear displacement sensor is connected with the other end of the parallel push rod, and the linear moving end of the linear motor is connected to the middle of the parallel push rod.
In the above shift valve rod position control device, the linear motor is of an external driving type, a rotating shaft of the linear motor comprises a trapezoidal screw rod, a trapezoidal nut which is meshed with the screw rod and hinged with the parallel push rod, and the hinged pin shaft of the trapezoidal nut and the parallel push rod is perpendicular to the plane where the linear guide rail is located.
Among the above-mentioned valve rod position control device of shifting, motor drive controller includes controller and motor drive ware, linear displacement sensor, fender position handle and motor drive ware with the controller is connected, the controller calculates the valve rod according to shift signal and valve rod position signal and needs direction of motion and distance and convert linear motor drive control signal transmission to motor drive ware into, and motor drive ware rotates according to linear motor drive control signal drive linear motor's rotor.
In the shift valve rod position control device, the gear handle comprises a walking mode change-over switch and a gear selection switch which are connected with the controller; the gear shifting signals comprise walking mode switching signals and gear signals, and the walking mode switching signals comprise forward, backward or neutral mode switching signals;
the walking mode switch is used for generating a corresponding walking mode switching signal according to the input of a user and transmitting the walking mode switching signal to the controller; the gear selection switch is used for generating a corresponding gear signal according to user input and transmitting the gear signal to the controller.
In the above shift valve rod position control device, the controller includes:
the signal receiving module is used for receiving a gear shifting signal output by the gear handle and a valve rod position signal output by the linear displacement sensor;
the signal processing module is used for converting the gear shifting signal and the valve rod position signal into a driving control signal of the linear motor;
and the signal sending module is used for sending a driving control signal of the linear motor to the motor driver and controlling the motor driver to drive the linear motor to move in a corresponding direction and a linear distance.
The technical scheme for realizing the purpose of the invention is as follows: the engineering machinery vehicle comprises a hydraulic transmission, and is characterized in that the hydraulic transmission is provided with the gear shifting valve rod position control device.
Compared with the prior art, the invention uses the linear motor to replace a manual mechanical connecting rod, thereby reducing the design and assembly difficulty, improving the reliability, lightening the weight of the whole device and reducing the cost. Adopt the electronic technique of shifting, the operation is simple and easy, alleviates the intensity of labour that driver frequently shifted, promotes work efficiency.
Drawings
Fig. 1 is a schematic view of the construction of a shift valve stem position control device of the present invention.
Fig. 2 is a partial structural view of the end of the parallel push rod.
Fig. 3 is a schematic structural view of a steel ball spring self-locking mechanism.
Fig. 4 is a control block diagram of the shift valve stem position control apparatus of the present invention.
Part names and serial numbers in the figure:
the device comprises a base plate 1, a linear guide rail 21, a parallel push rod 22, a linear displacement sensor 3, a movable guide rod 31, a motor drive controller 4, a motor driver 41, a linear motor 42, a screw 43, a nut 44, a controller 45, a signal receiving module 451, a signal processing module 452, a signal sending module 453, a hydraulic variable speed gear shifting valve 5, a valve rod 50, a valve rod extension rod 51, a bolt 52, a steel ball spring self-locking mechanism 53, a gear handle 6, a walking mode switching switch 61 and a gear selecting switch 62.
Detailed Description
The following description of the embodiments refers to the accompanying drawings.
The structure of the shift lever position control device in the present embodiment is shown in fig. 1, and the shift lever position control device can be used for a hydraulic transmission of a construction machine vehicle.
The shift valve rod position control device comprises a hydraulic variable speed shift valve 5, a valve rod driving device, a linear displacement sensor 3 and a gear handle 6.
The valve rod driving device comprises a linear motor 42 and a motor driving controller 4 for driving the linear motor 42 to work, and the linear moving end of the linear motor 42 is connected with a valve rod 50 of the hydraulic variable speed gear shift valve 5 through a valve rod horizontal pushing device. As shown in fig. 1, the valve rod horizontal pushing device includes two linear guide rails 21 arranged in parallel on a substrate 1, a parallel push rod 22 capable of sliding along the linear guide rails is arranged on the linear guide rails 21, the length direction of the parallel push rod 22 is perpendicular to the linear guide rails 21, and a movable guide rod 31 of a linear displacement sensor 3, a linear moving end of a linear motor 42, and a valve rod 50 are connected with the parallel push rod 22.
The base plate 1 is fixed on a bottom plate below a cab armrest box, a valve rod 50 of the hydraulic variable-speed gear shift valve 5 is connected with one end of a parallel push rod 22 through a valve rod extension rod 51, and the extension direction of the valve rod 50 is parallel to a linear guide rail 21. As shown in fig. 2, the parallel push rod 22 is provided at the end with a long hole 221 whose length direction is parallel to or coincident with the axial direction of the valve rod, and the valve rod extension rod 51 is hinged to the parallel push rod through a latch 52 inserted into the long hole 221.
As shown in fig. 1 and fig. 2, a linear motor 42 and a motor driving controller 41 are also fixed on the base plate 1, the linear motor 42 is of an external driving type, a rotating shaft thereof includes a trapezoidal screw 43 and a trapezoidal nut 44 engaged with the screw 43 and hinged with the parallel push rod 22, and a hinge pin of the nut 44 and the parallel push rod 22 is perpendicular to a plane where the two linear guide rails are located.
The linear displacement sensor 3 is also fixedly arranged on the base plate 1, a movable guide rod 31 of the linear displacement sensor 3 is hinged with the other end of the parallel push rod 22, and the telescopic direction of the movable guide rod 31 is parallel to the linear guide rail 21.
As shown in fig. 3, the hydraulic gear shifting valve 5 has a steel ball spring self-locking mechanism 53 for realizing self-locking of gears, and the valve rod can only stay at several relatively fixed positions corresponding to different gears of the hydraulic transmission through the self-locking mechanism.
As shown in fig. 4, the motor drive controller 4 includes a controller 45 and a motor driver 41. The gear lever 6 is connected to the controller 45 for a gear shift operation and transmits a gear shift signal to the controller 45. The gear shifting signals comprise walking mode switching signals and gear signals, and the walking mode switching signals comprise forward, backward or neutral mode switching signals. The shift lever 6 includes a travel mode selector switch 61 and a shift selector switch 62 connected to the controller 45. The walking mode switch 61 is used for generating a corresponding walking mode switching signal according to the input of the user and transmitting the walking mode switching signal to the controller; the gear selection switch 62 is used for generating a corresponding gear signal according to the user input and transmitting the gear signal to the controller. That is, the operator selects the traveling mode of the vehicle, such as forward or reverse or neutral, through the traveling mode selector switch 61, selects the gear of the vehicle, such as first gear or second gear, through the gear selector switch 62, and the traveling mode switching signal and the gear signal are combined to form the gear signal, such as different gear signals of first forward gear, second forward gear, reverse gear, neutral, and so on.
The linear displacement sensor 3 is connected to the controller 45 for detecting the position of the valve stem 50 of the hydraulic variable speed shift valve and transmitting a valve stem position signal to the motor drive controller.
The controller 45 includes a signal receiving module 451, a signal processing module 452, and a signal transmitting module 453. The signal receiving module 451 is used for receiving a gear shifting signal output by the gear handle and a valve rod position signal output by the linear displacement sensor; the signal processing module 452 is configured to convert the shift signal and the valve rod position signal into a driving control signal of a linear motor; the signal transmission module 453 is used to transmit a driving control signal of the linear motor to the motor driver. The motor driver drives the linear motor to move in the corresponding direction and the linear distance according to the received control signal.
In this embodiment, the linear motor 42 is a linear stepping motor, and the controller 45 calculates the required moving direction and distance of the valve rod 50 according to the shift signal and the valve rod position signal and converts the required moving direction and distance into a linear motor driving control signal to be sent to the motor driver, and the motor driver drives the rotor of the linear motor to rotate according to the linear motor driving control signal. After the valve rod driving device pushes the parallel push rod to a preset position, the linear stepping motor rotates reversely and drives the parallel push rod to move reversely, so that the bolt is located at the center of the long hole.
Claims (7)
1. A shift valve lever position control device comprising a hydraulic variable speed shift valve characterized by comprising:
the valve rod driving device comprises a linear motor and a motor driving controller for driving the linear motor to work, and a linear moving end of the linear motor is connected with a valve rod of the hydraulic variable-speed gear shift valve through a valve rod horizontal pushing device;
the linear displacement sensor is connected with the motor drive controller and used for detecting the position of a valve rod of the hydraulic variable-speed gear shifting valve and transmitting a valve rod position signal to the motor drive controller;
the gear handle is connected with the motor drive controller and is used for gear shifting operation and transmitting a gear shifting signal to the motor drive controller;
the motor driving controller drives the linear motor according to the gear shifting signal and the valve rod position signal, and the linear motor pushes the valve rod to axially move to a preset position corresponding to the gear shifting signal through the valve rod horizontal pushing device;
the valve rod horizontal pushing device comprises two linear guide rails axially parallel to the valve rod, and parallel push rods arranged on the linear guide rails and capable of sliding along the linear guide rails, wherein a movable guide rod of the linear displacement sensor, a linear moving end of the linear motor and the valve rod are connected with the parallel push rods;
the linear motor is a linear stepping motor, a long hole with the length direction parallel to or coincident with the axial direction of the valve rod is formed in the parallel push rod, and the valve rod is hinged with the parallel push rod through a bolt inserted in the long hole;
the hydraulic variable-speed gear shifting valve is provided with a steel ball spring self-locking mechanism for realizing gear self-locking, and the valve rod driving device pushes the parallel push rod to a preset position according to a gear shifting signal and a valve rod position signal, then the linear stepping motor rotates in the reverse direction and drives the parallel push rod to move in the reverse direction, so that the bolt is positioned in the center of the long hole.
2. The shift valve lever position control device according to claim 1, wherein the length direction of the parallel push rod is perpendicular to the linear guide rail, the valve lever is connected to one end of the parallel push rod, the movable guide rod of the linear displacement sensor is connected to the other end of the parallel push rod, and the linear moving end of the linear motor is connected to the middle of the parallel push rod.
3. The shift valve lever position control device according to any one of claims 1 to 2, wherein the linear motor is of an external drive type, and a rotating shaft thereof includes a trapezoidal screw, a trapezoidal nut engaged with the screw and hinged to the parallel push rod, and a hinge pin of the trapezoidal nut hinged to the parallel push rod is perpendicular to a plane in which the two linear guide rails are located.
4. The shift lever position control device according to any one of claims 1 to 2, wherein the motor drive controller comprises a controller and a motor driver, the linear displacement sensor, the shift lever and the motor driver are connected with the controller, the controller calculates the required movement direction and distance of the valve rod according to the shift signal and the valve rod position signal and converts the required movement direction and distance into a linear motor drive control signal to be sent to the motor driver, and the motor driver drives the rotor of the linear motor to rotate according to the linear motor drive control signal.
5. The shift lever position control device of claim 4, wherein the shift lever comprises a travel mode selector switch and a shift select switch connected to the controller; the gear shifting signals comprise walking mode switching signals and gear signals, and the walking mode switching signals comprise forward, backward or neutral mode switching signals;
the walking mode switch is used for generating a corresponding walking mode switching signal according to the input of a user and transmitting the walking mode switching signal to the controller; the gear selection switch is used for generating a corresponding gear signal according to user input and transmitting the gear signal to the controller.
6. The shift lever position control device of claim 4, characterized in that the controller comprises:
the signal receiving module is used for receiving a gear shifting signal output by the gear handle and a valve rod position signal output by the linear displacement sensor;
the signal processing module is used for converting the gear shifting signal and the valve rod position signal into a driving control signal of the linear motor;
and the signal sending module is used for sending a driving control signal of the linear motor to the motor driver and controlling the motor driver to drive the linear motor to move in a corresponding direction and a linear distance.
7. A work machine vehicle comprising a hydraulic transmission, characterized in that the shift valve stem position control device of any one of claims 1 to 6 is provided on the hydraulic transmission.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811128287.0A CN109084018B (en) | 2018-09-27 | 2018-09-27 | Shift valve rod position control device and engineering machinery vehicle |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811128287.0A CN109084018B (en) | 2018-09-27 | 2018-09-27 | Shift valve rod position control device and engineering machinery vehicle |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN109084018A CN109084018A (en) | 2018-12-25 |
| CN109084018B true CN109084018B (en) | 2021-04-23 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201811128287.0A Active CN109084018B (en) | 2018-09-27 | 2018-09-27 | Shift valve rod position control device and engineering machinery vehicle |
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| CN (1) | CN109084018B (en) |
Family Cites Families (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2004169877A (en) * | 2002-11-22 | 2004-06-17 | Nissan Motor Co Ltd | Control device for shift by wire type automatic transmission |
| CN203202371U (en) * | 2013-05-02 | 2013-09-18 | 陈少梅 | Electric interlocking needle valve |
| CN105156655A (en) * | 2015-06-18 | 2015-12-16 | 江苏柳工机械有限公司 | Gears operating mechanism of loader-digger |
| CN207145729U (en) * | 2017-07-21 | 2018-03-27 | 张久军 | A kind of electronic and manual integral valve |
| CN107762991A (en) * | 2017-10-19 | 2018-03-06 | 北京易联创安科技发展有限公司 | A kind of remote control system for being used to control scraper or loading machine to walk |
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2018
- 2018-09-27 CN CN201811128287.0A patent/CN109084018B/en active Active
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| Publication number | Publication date |
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| CN109084018A (en) | 2018-12-25 |
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