CN214466020U - Tractor combination formula machinery gearbox automatic gear shifting device, system and tractor - Google Patents
Tractor combination formula machinery gearbox automatic gear shifting device, system and tractor Download PDFInfo
- Publication number
- CN214466020U CN214466020U CN202120360234.2U CN202120360234U CN214466020U CN 214466020 U CN214466020 U CN 214466020U CN 202120360234 U CN202120360234 U CN 202120360234U CN 214466020 U CN214466020 U CN 214466020U
- Authority
- CN
- China
- Prior art keywords
- gear
- shifting
- selecting
- shaft
- gearbox
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Images
Landscapes
- Control Of Transmission Device (AREA)
- Gear-Shifting Mechanisms (AREA)
Abstract
The utility model relates to a tractor combination formula mechanical transmission automatic gear shifting device, system and tractor, the device selects actuating mechanism, the auxiliary box that shifts to select including the main tank to shift, the main tank selects to shift actuating mechanism and the auxiliary box selects to shift actuating mechanism and installs respectively on the gearbox, the main tank selects to shift actuating mechanism and the auxiliary box selects to shift to be connected with drive shifting block and drive on the actuating mechanism respectively the drive shifting block removes, the drive shifting block with drive groove cooperation in the gearbox selects to shift. The utility model discloses mainly to the automatically controlled electronic gear shift control in mechanical gearbox development, there is brush motor drive to realize the gearbox gear shift action mainly by a plurality of direct current, can realize selecting the automation of shifting.
Description
Technical Field
The utility model relates to a relevant technical field of agricultural machine, concretely relates to tractor combination formula mechanical transmission automatic gear shifting device, system and tractor.
Background
At present, mechanical gearboxes of agricultural tractors which are used more in the market adopt mechanical gear shifting. According to the traditional manual mechanical gear shifting scheme of the existing tractor, after a vehicle starts an engine, a driver firstly steps on a clutch, then selects a main box and an auxiliary box to start, then slowly releases the clutch to start the vehicle, the driver needs to continuously step on an accelerator after starting, the vehicle moves forwards, after the vehicle speed reaches a certain degree, the driver steps on the clutch again and raises the gear of a main gear box by 1, if the main box is shifted to the highest gear, the main box needs to be shifted to a neutral position, then the auxiliary box needs to be shifted to a gear, and then the main box is shifted to the lowest gear. Because the gear of the tractor gearbox is more, the fatigue strength of a driver is greatly improved.
SUMMERY OF THE UTILITY MODEL
The utility model aims to solve the technical problem that to prior art not enough, provide a tractor combination formula mechanical transmission automatic gear shifting device, system and tractor.
The utility model provides an above-mentioned technical problem's technical scheme as follows: the utility model provides a tractor combination formula mechanical transmission automatic gear shifting device, selects actuating mechanism, the gearbox of shifting including main case selection actuating mechanism, auxiliary tank, main case selection actuating mechanism and auxiliary tank selection actuating mechanism of shifting are installed respectively on the gearbox, main case selection actuating mechanism and auxiliary tank select to shift and are connected with drive shifting block and drive on the actuating mechanism respectively the drive shifting block removes, the drive shifting block with drive groove cooperation in the gearbox selects to shift.
The utility model has the advantages that: the utility model discloses mainly to the automatically controlled electronic gear shift control in mechanical gearbox development, there is brush motor drive to realize the gearbox gear shift action mainly by a plurality of direct current, can realize selecting the automation of shifting.
On the basis of the technical scheme, the utility model discloses can also do following improvement.
Furthermore, the gear selecting and shifting actuating mechanism of the main box gear selecting and shifting actuating mechanism and the gear selecting and shifting actuating mechanism of the auxiliary box gear selecting and shifting actuating mechanism respectively comprise a gear selecting motor, a gear selecting gear, a gear selecting worm and a gear selecting shaft, the driving end of the gear selecting motor is connected with the gear selecting worm, the gear selecting worm is meshed with the gear selecting gear and drives the gear selecting gear to rotate, the gear selecting shaft is fixedly connected with the gear selecting gear and rotates along with the gear selecting gear, one end of the gear selecting shaft is movably connected with a driving shifting block and drives the driving shifting block to move, and the driving shifting block is matched with a driving groove in the gearbox to perform gear selecting and shifting.
The beneficial effect of adopting the further scheme is that: the electric gear selecting design is adopted, a gear selecting structure on the original gearbox is omitted, the gear selecting is accurate, clamping stagnation is not easy, the efficiency is high, the precision is high, the reliability is good, manual operation is not needed, and the manufacturing cost of the gearbox is greatly reduced.
Furthermore, one end of the gear selecting shaft is of a ball head structure, a driving groove is formed in the driving shifting block, and the ball head structure is movably arranged in the driving groove and is in clearance fit with the inner side wall of the driving groove;
the gear selecting position sensor is arranged at the other end of the gear selecting shaft; two ends of the gear selecting shaft are respectively in supporting connection through bearings; the gear selecting gear is a sector gear; the gear selecting gear is sleeved on the gear selecting shaft and is connected with the gear selecting shaft through a second pin, and the second pin is welded and fixed with the gear selecting shaft.
The beneficial effect of adopting the further scheme is that: the ball head structure at one end of the gear selecting shaft is movably arranged in the driving groove, when the gear is selected, the ball head structure drives the driving groove to enable the driving shifting block to do linear motion, and the gear selecting angle and position are accurately judged through the gear selecting position sensor, so that accurate gear selection is smoothly realized. The design of the driving shifting block and the driving groove enables the gear selecting and shifting positioning to be greatly advanced, the whole actuating mechanism is optimized, the control precision is improved, the cost is greatly reduced, the phenomenon that the gear selecting is not in place or is allowed to be over-determined is solved, and the reliability of the gear selecting and shifting mechanism is enhanced. The gear selecting shaft is supported and installed on the shell through two bearings, the fixation of the gear selecting shaft is optimized, the higher coaxiality is guaranteed, the axial force in the operation process is effectively overcome, and the service life of the mechanism is prolonged. The gear selecting gear is positioned on the gear selecting shaft by the pin shaft, and then the gear selecting gear and the pin shaft are welded and fixed, so that the connection between the gear selecting gear and the gear selecting shaft is more stable and firm.
Furthermore, the gear shifting actuating mechanisms of the main box gear selecting and shifting actuating mechanism and the auxiliary box gear selecting and shifting actuating mechanism respectively comprise a gear shifting motor, a gear shifting gear, a gear shifting worm and a gear shifting shaft, the driving end of the gear shifting motor is connected with the gear shifting worm, the gear shifting worm is meshed with the gear shifting gear and drives the gear shifting gear to rotate, the gear shifting shaft is fixedly connected with the gear shifting gear and rotates along with the gear shifting gear, a driving shifting block is axially movably arranged on the gear shifting shaft, and the driving shifting block is matched with a driving groove in the gearbox for gear selecting and shifting.
The beneficial effect of adopting the further scheme is that: the gear shifting structure of the original gearbox is omitted, the electric gear shifting executing mechanism is changed, the technical defects that the gear shifting work is strong, the gear shifting is difficult, the gear shifting position is inaccurate and the like in the gear shifting process of the existing gear shifting mechanism are overcome, and the manufacturing cost of the gearbox is greatly reduced.
Furthermore, a spline is arranged on the gear shifting shaft, and the driving shifting block is axially movably mounted on the gear shifting shaft through the spline; the gear shifting position sensor is mounted at one end of the gear shifting shaft; the gear shifting gear is a sector gear; two ends of the gear shifting shaft are in supporting connection through bearings; the gear shifting gear is sleeved on the gear shifting shaft and connected with the gear shifting shaft through a first pin, and the first pin is fixedly welded with the gear shifting shaft.
The beneficial effect of adopting the further scheme is that: the gear shifting shaft is provided with an involute spline structure, so that the driving shifting block can be axially movably arranged on the gear shifting shaft, and the gear shifting mechanism and the gear selecting mechanism can be conveniently controlled. The two ends of the gear shifting shaft are supported by bearings, so that the connection is more stable and reliable. The gear shifting shaft is positioned on the gear shifting shaft by the pin shaft, and then the gear shifting shaft is welded and fixed with the pin shaft, so that the gear shifting shaft is more stably and firmly connected with the gear shifting shaft.
And the shuttle type gear electromagnetic valve is connected with the wet clutch in the gearbox.
Tractor combination formula mechanical transmission automatic gear shifting system, including the controller and respectively with controller communication connection's main case selects actuating mechanism, the vice case selects actuating mechanism, gearbox and the signal trigger part of shifting, be equipped with respectively on main case selects actuating mechanism and the vice case selects actuating mechanism that shifts and selects the position sensor of shifting, select shift position sensor with the controller is connected.
The utility model has the advantages that: aiming at the phenomena of complex gear shifting operation, high working strength and the like of the manual combined mechanical gearbox of the existing tractor, a driver gives a gear shifting instruction through signals such as an electronic gear shifting handle and braking action, and a controller receives and processes the received signals and gives different instructions according to different driving intentions. The controller realizes one-key gear shifting of the combined mechanical gearbox by controlling the main box gear shifting executing mechanism, the auxiliary box gear shifting executing mechanism and the wet clutch, greatly reduces the labor intensity of a manipulator and improves the operation efficiency.
The system further comprises an accelerator opening sensor and a rotating speed sensor which are respectively connected with the controller, wherein the accelerator opening sensor is used for acquiring accelerator opening and sending the accelerator opening to the controller, and the rotating speed sensor is used for acquiring the rotating speed of the engine and sending the rotating speed to the controller;
the system further comprises an accelerator opening sensor, an engine rotating speed sensor and an orthogonal rotating speed sensor, wherein the accelerator opening sensor, the engine rotating speed sensor and the orthogonal rotating speed sensor are respectively connected with the controller.
The controller is used for controlling the main box gear shifting execution mechanism and the auxiliary box gear shifting execution mechanism to perform gear up-shifting when the accelerator opening is increased and the engine speed exceeds a speed threshold corresponding to the current gear; and when the accelerator opening is reduced and the engine speed is lower than the speed threshold corresponding to the current gear, controlling the main box gear shifting execution mechanism and the auxiliary box gear shifting execution mechanism to perform gear reduction. Through setting up the cooperation of throttle opening sensor and speed sensor, can realize automatic upshift and downshift control. The orthogonal rotating speed sensor can be used for judging whether the wet clutch is completely disconnected or not, and automatic control of clutch is realized.
Further, the gear shifting signal triggering part comprises one or more of a gear shifting handle, an electronic touch screen, a gear shifting key, a clutch pedal, a brake, an accelerator and an FNR handle.
The beneficial effect of adopting the further scheme is that: the controller can carry out gear shifting and clutch control according to different gear shifting signal triggering parts.
A tractor comprises the automatic gear shifting device or system of the tractor combined type mechanical gearbox.
The utility model discloses a tractor can realize the key gear shift of combination formula machinery gearbox through control main tank gear shift actuating mechanism, auxiliary tank gear shift actuating mechanism and wet clutch, reduces the intensity of labour of cell-phone by a wide margin, improves the operating efficiency.
Drawings
Fig. 1 is a first schematic structural diagram of the gear selecting actuator of the present invention;
fig. 2 is a schematic structural diagram of the gear selecting actuator of the present invention;
fig. 3 is a first schematic structural diagram of the gear shift actuating mechanism of the present invention;
fig. 4 is a structural schematic view of the gear shift actuating mechanism of the present invention;
fig. 5 is a schematic sectional structure view of the gear selecting and shifting actuator of the present invention;
fig. 6 is a schematic view of the overall structure of the automatic gear shifting device of the present invention;
fig. 7 is a schematic flow chart of the automatic shifting system of the present invention.
In the drawings, the components represented by the respective reference numerals are listed below:
100. a gear selecting motor; 101. a gear selecting gear; 102. a gear selecting worm; 103. selecting a gear shaft; 104. a gear selection position sensor; 105. a ball head structure; 106. a bearing; 107. a second pin;
200. a shift motor; 201. a shift gear; 202. a shift worm; 203. a shift shaft; 204. a shift position sensor; 205. a spline; 206. a first pin; 207. welding;
300. driving the shifting block; 301. the groove is driven.
400. A gearbox; 401. a wet clutch; 500. a main box gear selecting and shifting actuating mechanism; 600. the auxiliary box selects the actuating mechanism of shifting gears; 700. a shuttle shift solenoid valve;
Detailed Description
The principles and features of the present invention are described below in conjunction with the following drawings, the examples given are only intended to illustrate the present invention and are not intended to limit the scope of the present invention.
Example 1
As shown in fig. 1 to 6, the automatic gear shifting device of the tractor combined mechanical transmission according to the embodiment includes a main box gear selecting and shifting executing mechanism, an auxiliary box gear selecting and shifting executing mechanism, and a transmission 400, wherein the main box gear selecting and shifting executing mechanism and the auxiliary box gear selecting and shifting executing mechanism are respectively installed on the transmission 400, the main box gear selecting and shifting executing mechanism and the auxiliary box gear selecting and shifting executing mechanism are respectively connected with a driving shifting block 300 and drive the driving shifting block 300 to move, and the driving shifting block 300 is matched with a driving groove in the transmission 400 for gear selecting and shifting.
The embodiment mainly aims at the electric control electric gear shifting control developed by a mechanical gearbox, and the gearbox is mainly driven by a plurality of direct current brush motors to realize the gear shifting action of the gearbox, so that the gear selecting and shifting automation can be realized.
Example 2
As shown in fig. 1 to 6, the automatic gear shifting device of the tractor combined mechanical transmission according to the embodiment includes a main box gear selecting and shifting executing mechanism, an auxiliary box gear selecting and shifting executing mechanism, and a transmission 400, wherein the main box gear selecting and shifting executing mechanism and the auxiliary box gear selecting and shifting executing mechanism are respectively installed on the transmission 400, the main box gear selecting and shifting executing mechanism and the auxiliary box gear selecting and shifting executing mechanism are respectively connected with a driving shifting block 300 and drive the driving shifting block 300 to move, and the driving shifting block 300 is matched with a driving groove in the transmission 400 for gear selecting and shifting.
As shown in fig. 1, 2 and 5, the gear selecting actuator of the main box gear shifting actuator and the sub-box gear shifting actuator includes a gear selecting motor 100, a gear selecting gear 101, a gear selecting worm 102, and a gear selecting shaft 103, a driving end of the gear selecting motor 100 is connected to the gear selecting worm 102, the gear selecting worm 102 is engaged with the gear selecting gear 101 and drives the gear selecting gear 101 to rotate, the gear selecting shaft 103 is fixedly connected to the gear selecting gear 101 and rotates along with the gear selecting gear 101, one end of the gear selecting shaft 103 is movably connected to a driving dial 300 and drives the driving dial 300 to move, the driving dial is matched with a driving groove in the transmission case 400 for gear selecting and shifting, and the gear selecting shaft 103 is provided with a gear selecting position sensor 104.
As shown in fig. 2, one end of the gear selecting shaft 103 of the present embodiment is a ball structure 105, a driving groove 301 is disposed on the driving shifting block 300, and the ball structure 105 is movably disposed in the driving groove 301. Select to keep off shaft 103 one end design for bulb structure 105, preferred the selection and kept off the precision, can accurate reliable selection keep off, avoid selecting two fender positions simultaneously, cause to hang into two fender positions simultaneously and shift gears unable driven problem. The driving groove 301 arranged on the driving shifting block 300 can accurately and efficiently select gears. The ball head structure 105 at one end of the gear selecting shaft 103 is movably arranged in the driving groove 301, when gear is selected, the ball head structure 105 drives the driving groove 301 to enable the driving shifting block 300 to do linear motion, and accurate gear selection is smoothly realized by accurately judging a gear selecting angle and position through the gear selecting position sensor. The design of the driving shifting block and the driving groove greatly improves the gear selecting and shifting positioning, optimizes the whole actuating mechanism, improves the control precision, greatly reduces the cost, solves the problem of gear selecting failure or over-permission, and enhances the reliability of the gear selecting and shifting mechanism.
The ball structure 105 of this embodiment is in clearance fit with the inner side wall of the driving groove 301.
As shown in fig. 1 and 2, the gear selection position sensor 104 of the present embodiment is mounted on the other end of the gear selection shaft 103; two ends of the gear selecting shaft 103 are respectively connected through bearings 106 in a supporting mode, and the bearings can be ball bearings. The gear selecting shaft is supported and installed on the shell through the two ball bearings, the fixation of the gear selecting shaft is optimized, the higher coaxiality is guaranteed, the axial force in the operation process is effectively overcome, and the service life of the mechanism is prolonged.
The gear selecting gear 101 of the present embodiment is a sector gear, and may specifically be a sector helical gear. The gear selecting shaft connected with the sector gear rotates by driving the sector gear to rotate, and then the ball head structure on the gear selecting shaft is driven to rotate to drive the shifting block to move.
As shown in fig. 1, 2 and 5, the gear selecting gear 101 is sleeved on the gear selecting shaft 103 and connected to the gear selecting shaft 103 through a second pin 107, the gear selecting gear 101 is welded to the gear selecting shaft 103, the second pin 107 is welded to the gear selecting shaft 103, and a welding position 207 is shown in fig. 5. The gear selecting gear is positioned on the gear selecting shaft by the pin shaft, and then the gear selecting gear and the pin shaft are welded and fixed, so that the connection between the gear selecting gear and the gear selecting shaft is more stable and firm.
The gear selecting actuator of the gearbox of the embodiment has the working principle that when the gear is selected, the gear selecting motor 100 drives the gear selecting worm 102 to rotate, the gear selecting worm 102 drives the gear selecting gear 101, the gear selecting gear 101 drives the gear selecting shaft 103 to rotate, the gear selecting shaft 103 further drives the driving shifting block 300 fixedly connected with the gear selecting shaft to rotate along with the gear selecting shaft, and the driving shifting block 300 drives the gear selecting action to be completed; the gear selecting position sensor 104 is connected with the gear selecting shaft 103 to detect the rotation angle of the gear selecting shaft 103, and the gear selecting shaft 103 and the gear selecting gear 101 are integrally connected. The gear selecting shaft 103 is mounted on the shell structure through two ball bearings, the ball head structure 105 on the gear selecting shaft 103 is in clearance fit with the driving groove 301 of the driving shifting block 300, when gear is selected, the ball head structure 105 on the gear selecting shaft 103 drives the driving groove to enable the driving shifting block 300 to do linear motion, and accurate gear selection is smoothly achieved through accurate judgment of gear selecting angles and positions of the gear selecting position sensor 104; the existence of the driving shifting block 300 and the driving groove 301 on the driving shifting block and the arrangement of the gear selecting position sensor greatly improve the gear selecting and shifting positioning in the prior art, optimize the structure of the whole actuating mechanism, improve the control precision, greatly reduce the cost, solve the phenomena of gear selecting failure or over-permission and enhance the reliability of the gear selecting and shifting mechanism.
In the gear selecting mechanism, the gear selecting shaft is designed into a whole, the gear selecting position can be quickly and accurately controlled during gear selecting, and the strength and the transmission precision of parts are improved, so that two gears are prevented from being selected simultaneously, the gear selecting shaft is in transitional connection with the shell through two ball bearings, and the accuracy and the reliability of the parts are greatly improved; the ball head structure of the gear selecting shaft is designed to be spherical, so that stress concentration is reduced, clamping stagnation is avoided, and the positioning precision and stability of the whole system are improved. The ball head structure of the gear selecting shaft directly drives the driving groove of the driving shifting block when in gear selection, so that the gear selecting time can be reduced in the whole control, and the transmission efficiency is greatly improved. The gear selecting mechanism of the embodiment reduces related parts of a gear selecting position, optimizes the installation mode of the structure, simplifies the structure of the whole executing mechanism, improves the gear selecting accuracy, reduces the processing cost of related parts, and has good economic performance.
The utility model discloses mainly to the automatically controlled electronic gear shift control in mechanical gearbox development, there is brush motor drive to realize the gearbox gear shift action mainly by a plurality of direct current, can realize selecting the automation of shifting.
Example 3
The automatic gear shifting system of the harvesting machine of the embodiment comprises the contents of the embodiment 1 or the embodiment 2, as shown in fig. 3 to 5, the shift actuator of the main and sub-tank shift actuators includes a shift motor 200, a shift gear 201, a shift worm 202, a shift shaft 203 and a shift position sensor 204, the driving end of shift motor 200 is connected to shift worm 202, shift worm 202 is engaged with shift gear 201 and drives shift gear 201 to rotate, the shift shaft 203 is fixedly connected with the shift gear 201 and rotates with the shift gear 201, the gear shifting shaft 203 is provided with a driving shifting block 300 capable of moving axially, the driving shifting block 300 is matched with a driving groove in the gearbox 400 for gear shifting, and the gear shifting shaft 203 is provided with a gear shifting position sensor 104.
As shown in fig. 2, the shift shaft 203 of the present embodiment is provided with a spline 205, and the driving dial 300 is axially movably mounted on the shift shaft 203 through the spline 205. The driving shifting block 300 is sleeved on the gear shifting shaft 203. The gear shifting shaft is provided with an involute spline structure, so that the driving shifting block can be axially movably arranged on the gear shifting shaft, and the gear shifting mechanism and the gear selecting mechanism can be conveniently controlled.
As shown in fig. 2, the shift position sensor 204 of the present embodiment is mounted on one end of the shift shaft 203. The position information of the gear shifting shaft is conveniently detected.
As shown in fig. 1, the shift gear 201 of the present embodiment is a sector gear. Through drive sector gear rotation, make the selector shaft who is connected with sector gear rotate, and then drive the epaxial drive shifting block of selector and rotate and shift.
As shown in fig. 1 and 2, two ends of the shift shaft 203 of the present embodiment are supported and connected by bearings; specifically, one end of the shift shaft 203 is supported and connected through a needle bearing, and the other end of the shift shaft is supported and connected through a ball bearing. The two ends of the gear shifting shaft are supported by bearings, so that the connection is more stable and reliable.
As shown in fig. 1, 2 and 5, the shift gear 201 of the present embodiment is sleeved on the shift shaft 203 and connected to the shift shaft 203 through a first pin 206, the shift gear 201 is welded and fixed to the shift shaft 203, and the first pin 206 is welded and fixed to the shift shaft 203. The gear shifting shaft is positioned on the gear shifting shaft by the pin shaft, and then the gear shifting shaft is welded and fixed with the pin shaft, so that the gear shifting shaft is more stably and firmly connected with the gear shifting shaft.
The operating principle of the gear shifting actuating mechanism of the transmission is that a gear shifting motor 200 drives a gear shifting worm 202 to rotate, the gear shifting worm 202 is supported and connected on a shell through a bearing 106, the gear shifting worm 202 drives a gear shifting gear 201 meshed with the gear shifting worm to rotate, the gear shifting gear 201 is connected with a gear shifting shaft 203 and drives the gear shifting shaft 203 to rotate, the gear shifting shaft 203 is supported and connected on the shell through the bearing 106, a gear shifting position sensor 204 is connected with the gear shifting shaft 203 to monitor the rotation angle, and a driving shifting block 300 is connected with the gear shifting shaft 203 through a spline 205 and is driven by the gear shifting shaft 203 to rotate and drive to shift gears.
Wherein, shift motor 200 is fixed on the casing, and shift motor 200 adopts the hard joint with the worm 202 that shifts, and shift motor 200 is just reversing to realize that same shift layer is shifted gears in different grades. The gear shifting shaft 203 is connected with the gear shifting gear 201 in a pin + welding mode, the gear shifting shaft 203 is connected with the driving shifting block 300 through a spline 205, a large axial force is generated in the gear shifting process, and a double-ball bearing supporting mode is adopted for reducing the structural size of a product. The gear shifting worm 202 rotates to drive the gear shifting shaft 203 to rotate, the gear shifting function is finally achieved, and the gear shifting position sensor 204 is connected with the gear shifting shaft 203 and monitors the gear shifting position in real time. After the gear shifting position is correct, the gear shifting motor 200 stops working, the gear shifting position sensor 204 feeds back the gear position in real time, and if the gear position of the gearbox is found to change, the motor generates reverse self-locking force, so that gear disengagement is avoided.
The whole process control precision of shifting of this embodiment is high, and the position of shifting can real-time supervision, and the position sensor that shifts feeds back real-time information after advancing to keep off guarantees that the gearbox does not take off the fender, and the reliability is high, and transmission efficiency is high. The gear shifting mechanism of the embodiment is simple in structure, low in cost, good in economic performance, good in popularization and application prospect and good in practicability.
The utility model discloses mainly to the automatically controlled electronic gear shift control in mechanical gearbox development, there is brush motor drive to realize the gearbox gear shift action mainly by a plurality of direct current, can realize selecting the automation of shifting.
Example 4
The automatic gear shifting device for the harvesting machine of the embodiment comprises the contents of embodiment 1, embodiment 2 or embodiment 3, and further comprises a shuttle gear electromagnetic valve which is connected with a wet clutch in a gearbox and used for controlling the connection or disconnection of the wet clutch, as shown in fig. 6.
Example 5
As shown in fig. 1 to 7, the automatic gear shifting system of the tractor combined mechanical gearbox of the embodiment comprises the devices of any one of embodiments 1 to 4, and further comprises a controller, wherein the controller can select a TCU; the main box gear selecting and shifting executing mechanism 500, the auxiliary box gear selecting and shifting executing mechanism 600, the gearbox 400 and the gear shifting signal triggering part are respectively in communication connection with the controller, gear selecting and shifting position sensors are respectively arranged on the main box gear selecting and shifting executing mechanism 500 and the auxiliary box gear selecting and shifting executing mechanism 600, and the installation positions of the gear selecting and shifting position sensors can be seen in embodiment 1-embodiment 3. The gear selecting and shifting position sensor is connected with the controller and sends the collected gear selecting and shifting position signal to the controller, and the controller is used for receiving and controlling the shuttle type gear electromagnetic valve 700 to be disconnected or combined with the wet clutch 401 in the gearbox and the gear selecting and shifting executing mechanism to operate according to the triggering signal received by the gear shifting signal triggering part and the gear selecting and shifting position signal.
The embodiment aims at the phenomena of complex gear shifting operation, high working strength and the like of the manual combined mechanical gearbox of the existing tractor, a driver gives a gear shifting instruction through signals such as an electronic gear shifting handle and braking action, the controller receives and processes the received signals, and different instructions are given according to different driving intentions. The controller realizes one-key gear shifting of the combined mechanical gearbox by controlling the main box gear shifting executing mechanism, the auxiliary box gear shifting executing mechanism and the wet clutch, greatly reduces the labor intensity of a manipulator and improves the operation efficiency.
In the embodiment, mainly aiming at the electric control and electric gear shifting control developed for a 12-gear mechanical gearbox, 4 direct current brush motors are mainly used for driving to realize the gear shifting action of the gearbox. The embodiment is mainly applied to the control of a novel gear selecting and shifting executing mechanism of an agricultural mechanical gearbox, and the position closed-loop control of gear selecting and shifting is mainly realized through the PWM control of a motor. The duty cycle size of motor can be adjusted in real time according to position sensor's change automatically to this embodiment, and the TCU controller has protect function to driving motor, has avoided the phenomenon that long-time big duty cycle was plugged up, extension driving motor life also can normally work under the environment is abominable, satisfies agricultural machine service environment demand.
Example 6
As shown in fig. 1 to 7, the automatic gear shifting system of a tractor combined mechanical gearbox of the present embodiment includes the apparatus of any one of embodiments 1 to 4, and further includes a controller, where the controller can select a TCU; the main box gear selecting and shifting executing mechanism 500, the auxiliary box gear selecting and shifting executing mechanism 600, the shuttle type gear electromagnetic valve 700, the gearbox 400 and the gear shifting signal triggering part are respectively in communication connection with the controller, gear selecting and shifting position sensors are respectively arranged on the main box gear selecting and shifting executing mechanism 500 and the auxiliary box gear selecting and shifting executing mechanism 600, and the installation positions of the gear selecting and shifting position sensors can be seen in embodiment 1-embodiment 3. The gear selecting and shifting position sensor is connected with the controller and sends the collected gear selecting and shifting position signal to the controller, and the controller is used for receiving and controlling the shuttle type gear electromagnetic valve 700 to be disconnected or combined with the wet clutch 401 in the gearbox and the gear selecting and shifting executing mechanism to operate according to the triggering signal received by the gear shifting signal triggering part and the gear selecting and shifting position signal.
The automatic gear shifting system of the tractor combined type mechanical gearbox further comprises an accelerator opening sensor and a rotating speed sensor, wherein the accelerator opening sensor and the rotating speed sensor are respectively connected with the controller, the accelerator opening sensor is used for collecting accelerator opening and sending the accelerator opening to the controller, and the rotating speed sensor is used for collecting engine rotating speed and sending the engine rotating speed to the controller;
the controller is used for controlling the main box gear-shifting executing mechanism 500 and the auxiliary box gear-shifting executing mechanism 600 to shift up when the accelerator opening is increased and the engine speed exceeds the speed threshold corresponding to the current gear; and when the accelerator opening is reduced and the engine speed is lower than the speed threshold corresponding to the current gear, controlling the main box gear-shifting executing mechanism 500 and the auxiliary box gear-shifting executing mechanism 600 to perform downshift. Through setting up the cooperation of throttle opening sensor and speed sensor, can realize automatic upshift and downshift control.
An orthogonal rotation speed sensor for detecting the state of the wet clutch 401 is further arranged in the gearbox 400. The orthogonal rotating speed sensor can be used for judging whether the wet clutch is completely disconnected or not, and automatic control of clutch is realized.
Specifically, the gear shifting signal triggering part comprises one or more of a gear shifting handle, an electronic touch screen, a gear shifting key, a clutch pedal, a brake, an accelerator and a FNR handle. The controller can carry out gear shifting and clutch control according to different gear shifting signal triggering parts.
The embodiment aims at the phenomena of complex gear shifting operation, high working strength and the like of the manual combined mechanical gearbox of the existing tractor, a driver gives a gear shifting instruction through signals such as an electronic gear shifting handle and braking action, the controller receives and processes the received signals, and different instructions are given according to different driving intentions. The controller realizes one-key gear shifting of the combined mechanical gearbox by controlling the main box gear shifting executing mechanism, the auxiliary box gear shifting executing mechanism and the wet clutch, greatly reduces the labor intensity of a manipulator and improves the operation efficiency.
In the embodiment, mainly aiming at the electric control and electric gear shifting control developed for a 12-gear mechanical gearbox, 4 direct current brush motors are mainly used for driving to realize the gear shifting action of the gearbox. The embodiment is mainly applied to the control of a novel gear selecting and shifting executing mechanism of an agricultural mechanical gearbox, and the position closed-loop control of gear selecting and shifting is mainly realized through the PWM control of a motor. The duty cycle size of motor can be adjusted in real time according to position sensor's change automatically to this embodiment, and the TCU controller has protect function to driving motor, has avoided the phenomenon that long-time big duty cycle was plugged up, extension driving motor life also can normally work under the environment is abominable, satisfies agricultural machine service environment demand.
Example 7
A tractor of this embodiment comprising a tractor compound mechanical transmission automatic shifting device of any of embodiments 1-4 above or the system of embodiment 5 or the system of embodiment 6. The tractor of the embodiment can realize one-key gear shifting of the combined mechanical gearbox by controlling the main box gear shifting actuating mechanism, the auxiliary box gear shifting actuating mechanism and the wet clutch, greatly reduces the labor intensity of a manipulator and improves the working efficiency.
In the description of the present invention, it is to be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", and the like, indicate the orientation or positional relationship indicated based on the drawings, and are only for convenience of description and simplicity of description, and do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore, should not be construed as limiting the present invention.
Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one such feature. In the description of the present invention, "a plurality" means at least two, e.g., two, three, etc., unless specifically limited otherwise.
In the present invention, unless otherwise expressly stated or limited, the terms "mounted," "connected," and "fixed" are to be construed broadly and may, for example, be fixedly connected, detachably connected, or integrally formed; can be mechanically or electrically connected; they may be directly connected or indirectly connected through intervening media, or they may be connected internally or in any other suitable relationship, unless expressly stated otherwise. The specific meaning of the above terms in the present invention can be understood according to specific situations by those skilled in the art.
In the present application, unless expressly stated or limited otherwise, the first feature may be directly on or directly under the second feature or indirectly via intermediate members. Also, a first feature "on," "over," and "above" a second feature may be directly or diagonally above the second feature, or may simply indicate that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature may be directly under or obliquely under the first feature, or may simply mean that the first feature is at a lesser elevation than the second feature.
In the description herein, references to the description of the term "one embodiment," "some embodiments," "an example," "a specific example," or "some examples," etc., mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the invention. In this specification, the schematic representations of the terms used above are not necessarily intended to refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples. Furthermore, various embodiments or examples and features of different embodiments or examples described in this specification can be combined and combined by one skilled in the art without contradiction.
Although embodiments of the present invention have been shown and described, it is understood that the above embodiments are exemplary and should not be construed as limiting the present invention, and that variations, modifications, substitutions and alterations can be made to the above embodiments by those of ordinary skill in the art without departing from the scope of the present invention.
Claims (10)
1. The automatic gear shifting device of the combined mechanical gearbox of the tractor is characterized by comprising a main gearbox gear selecting and shifting actuating mechanism, an auxiliary gearbox gear selecting and shifting actuating mechanism and a gearbox, wherein the main gearbox gear selecting and shifting actuating mechanism and the auxiliary gearbox gear selecting and shifting actuating mechanism are respectively installed on the gearbox, a driving shifting block is respectively connected to the main gearbox gear selecting and shifting actuating mechanism and the auxiliary gearbox gear selecting and shifting actuating mechanism and drives the driving shifting block to move, and the driving shifting block is matched with a driving groove in the gearbox to select and shift gears.
2. The automatic gear shifting device of the tractor combined type mechanical gearbox according to claim 1, wherein the gear selecting and shifting actuator of the main gearbox and the gear selecting and shifting actuator of the auxiliary gearbox respectively comprise a gear selecting motor, a gear selecting gear, a gear selecting worm and a gear selecting shaft, the driving end of the gear selecting motor is connected with the gear selecting worm, the gear selecting worm is meshed with the gear selecting gear and drives the gear selecting gear to rotate, the gear selecting shaft is fixedly connected with the gear selecting gear and rotates along with the gear selecting gear, one end of the gear selecting shaft is movably connected with a driving shifting block and drives the driving shifting block to move, and the driving shifting block is matched with a driving groove in the gearbox to select and shift gears.
3. The automatic gear shifting device of the tractor combined mechanical gearbox according to claim 2, wherein one end of the gear selecting shaft is of a ball head structure, a driving groove is formed in the driving shifting block, and the ball head structure is movably arranged in the driving groove and is in clearance fit with the inner side wall of the driving groove;
the gear selecting position sensor is arranged at the other end of the gear selecting shaft; two ends of the gear selecting shaft are respectively in supporting connection through bearings; the gear selecting gear is a sector gear; the gear selecting gear is sleeved on the gear selecting shaft and is connected with the gear selecting shaft through a second pin, and the second pin is welded and fixed with the gear selecting shaft.
4. The automatic gear shifting device of the tractor combined type mechanical gearbox according to claim 1, wherein the gear shifting actuators of the main box gear shifting actuator and the auxiliary box gear shifting actuator respectively comprise a gear shifting motor, a gear shifting gear, a gear shifting worm and a gear shifting shaft, the driving end of the gear shifting motor is connected with the gear shifting worm, the gear shifting worm is meshed with the gear shifting gear and drives the gear shifting gear to rotate, the gear shifting shaft is fixedly connected with the gear shifting gear and rotates along with the gear shifting gear, a driving shifting block is axially movably arranged on the gear shifting shaft, and the driving shifting block is matched with a driving groove in the gearbox for gear shifting.
5. The automatic shifting apparatus of a tractor mechanical range box according to claim 4, wherein the shift shaft is provided with splines, and the driving dial is axially movably mounted on the shift shaft through the splines; a shift position sensor is mounted at one end of the shift shaft; the gear shifting gear is a sector gear; two ends of the gear shifting shaft are in supporting connection through bearings; the gear shifting gear is sleeved on the gear shifting shaft and connected with the gear shifting shaft through a first pin, and the first pin is fixedly welded with the gear shifting shaft.
6. The automatic shifting apparatus of a tractor compound mechanical transmission as defined by claim 1 further comprising a shuttle solenoid valve coupled to a wet clutch in the transmission.
7. The automatic gear shifting system of the combined mechanical gearbox of the tractor is characterized by comprising a controller, a main gearbox gear selecting and shifting actuating mechanism, an auxiliary gearbox gear selecting and shifting actuating mechanism, a gearbox and a gear shifting signal triggering part which are in communication connection with the controller respectively, wherein gear selecting and shifting position sensors are arranged on the main gearbox gear selecting and shifting actuating mechanism and the auxiliary gearbox gear selecting and shifting actuating mechanism respectively, and the gear selecting and shifting position sensors are connected with the controller.
8. The tractor compound mechanical transmission automatic shifting system of claim 7, further comprising an accelerator opening sensor, an engine speed sensor, and an orthogonal speed sensor for detecting a wet clutch status, each connected to the controller.
9. The automatic gear shifting system of the tractor combined mechanical gearbox according to claim 7, wherein the gear shifting signal trigger part comprises one or more of a gear shifting handle, an electronic touch screen, a gear shifting key, a clutch pedal, a brake, a throttle and an FNR handle.
10. A tractor comprising a tractor compound mechanical transmission automatic shifting apparatus of any one of claims 1 to 6 or a tractor compound mechanical transmission automatic shifting system of any one of claims 7 to 9.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120360234.2U CN214466020U (en) | 2021-02-07 | 2021-02-07 | Tractor combination formula machinery gearbox automatic gear shifting device, system and tractor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120360234.2U CN214466020U (en) | 2021-02-07 | 2021-02-07 | Tractor combination formula machinery gearbox automatic gear shifting device, system and tractor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN214466020U true CN214466020U (en) | 2021-10-22 |
Family
ID=78136769
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202120360234.2U Active CN214466020U (en) | 2021-02-07 | 2021-02-07 | Tractor combination formula machinery gearbox automatic gear shifting device, system and tractor |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN214466020U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114738475A (en) * | 2022-03-09 | 2022-07-12 | 江苏理工学院 | Gear shifting executing device for electric automobile |
-
2021
- 2021-02-07 CN CN202120360234.2U patent/CN214466020U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114738475A (en) * | 2022-03-09 | 2022-07-12 | 江苏理工学院 | Gear shifting executing device for electric automobile |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN100473859C (en) | Clutch actuator, engine unit and bestriding type vehicle | |
| CN100406788C (en) | Parking device of vehicle | |
| CN204420084U (en) | A kind of motor direct-drive formula gear-shifting actuating mechanism | |
| CN214466020U (en) | Tractor combination formula machinery gearbox automatic gear shifting device, system and tractor | |
| CN113123913B (en) | Engine starting method and device for hybrid vehicle, storage medium and vehicle | |
| CN201559654U (en) | Control system of manual or automatic electric-control machinery gear box | |
| WO2022033067A1 (en) | Gear shifting operation device and gear shifting method | |
| CN112815081A (en) | Tractor combination formula machinery gearbox automatic gear shifting device, system and tractor | |
| US6561052B2 (en) | Automatic transmission | |
| CN216200419U (en) | Gear selecting and shifting mechanism of integrated automatic gearbox of automobile | |
| CN214466034U (en) | Automatic gear shifting device and system of harvesting machine and harvesting machine | |
| KR100446989B1 (en) | Automatic Transmission For Fitting Manual Trasmission | |
| CN214466021U (en) | Non-road gearbox gear selecting mechanism, gear selecting and shifting assembly and agricultural machine | |
| CN214466022U (en) | Non-road gearbox gear shifting mechanism, gear selecting and shifting assembly and agricultural machine | |
| CN113833815B (en) | AMT transmission and new energy automobile | |
| CN102434664A (en) | Gear selecting/shifting control device of vehicle transmission | |
| CN213270986U (en) | Gear shifting mechanism adaptive to four-gear AMT | |
| CN210531592U (en) | Select gearshift, derailleur and vehicle | |
| CN112815089A (en) | Automatic gear shifting device and system of harvesting machine and harvesting machine | |
| CN203335822U (en) | Electric control pneumatic four-shifting-fork-shaft AMT assembly | |
| CN106949232B (en) | The hydraulic gear-shifting mechanism of automatic mechanical transmission is kept off for electric vehicle two | |
| CN206785992U (en) | The hydraulic gear-shifting mechanism of automatic mechanical transmission is kept off for electric automobile two | |
| CN201559653U (en) | Control system of manual electric-control machinery gear box | |
| CN204114105U (en) | A kind of shift interlock structure | |
| CN209856360U (en) | Automatic control gear shifting kit for manual transmission refitting and vehicle |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CP01 | Change in the name or title of a patent holder |
Address after: 261206 No. 192 South Beihai Road, Fangzi District, Shandong, Weifang Patentee after: Weichai Lovol Intelligent Agricultural Technology Co.,Ltd. Address before: 261206 No. 192 South Beihai Road, Fangzi District, Shandong, Weifang Patentee before: Weichai leiwo Heavy Industry Co.,Ltd. |
|
| CP01 | Change in the name or title of a patent holder |