A pure electric tractor gearbox

Abstract

The invention discloses a pure electric tractor gearbox, wherein the ventilation part comprises a main body, a main body ring, a main valve core and a secondary valve core; the main body is provided with a main flow channel, a secondary flow channel and a central flow channel, one end of the main flow channel is connected to the interior of the main body, one end of the secondary flow channel is connected to the interior of the main body, one end of the central flow channel is connected to the outside atmosphere, and the main body ring is arranged in the main body; the secondary valve core is slidably arranged in the main body through a secondary valve spring, and the secondary valve spring can push the secondary valve core to move in a direction close to the central flow channel and abut on the main body ring to cut off the other end of the secondary flow channel from being connected to the other end of the central flow channel; the main valve core is slidably arranged on the secondary valve core through a main valve spring, and the main valve spring can drive the main valve core to move in a direction close to the main flow channel and abut on the secondary valve core to cut off the other end of the main flow channel from being connected to the other end of the central flow channel. The pure electric tractor gearbox can keep the internal pressure of the gearbox stable and ensure the normal operation of the internal parts of the gearbox.

Description

Technical Field

[0001] The present invention relates to the technical field of gearboxes, and in particular to a pure electric tractor gearbox. Background Art

[0002] With the continuous development of rural economy and the continuous increase of agricultural machinery and implements for farmland operation, users have more and more requirements for tractor functions, and the tractor gearbox is the key to realize the tractor functions. The function of the gearbox is to reasonably distribute the torque and speed output by the engine to each drive system, so as to provide sufficient traction and speed to meet various working conditions of the vehicle, while keeping the engine in an efficient working range.

[0003] Pure electric tractor gearbox is a gearbox used on pure electric tractors. The existing pure electric tractor gearbox still has the following technical problems when in use:

[0004] 1. At present, when the pure electric tractor gearbox is in use, its internal temperature will rise, causing the air pressure in the gearbox to increase, and the high-pressure air will flow out through the ventilation device to maintain the pressure in the gearbox. In order to ensure the sealing inside the gearbox, most of the existing ventilation devices are normally closed. This means that when the pure electric tractor gearbox stops working and the temperature drops, air cannot be replenished into the gearbox, which causes the air pressure inside the gearbox to decrease, and negative pressure is generated at the dynamic seals and static seals in other parts of the gearbox, causing the seals to deform or move. When working again, due to the increase in internal pressure, the seals in the gearbox will expand outward again, which will increase the wear of the seals and cause oil leakage problems;

[0005] 2. When the existing ventilation device discharges air, the air temperature is too high, so that the air will be mixed with oil vapor. When used for a long time, it will cause the problem of oil loss inside the gearbox, thereby affecting the operation of the internal parts of the pure electric tractor gearbox;

[0006] 3. Because the internal environment of the gearbox is relatively complex when it is working, there will be a lot of impurities in the air after passing through the ventilation device, which will cause the ventilation device to be blocked. Therefore, the ventilation device needs to be cleaned and maintained regularly. However, the internal structure of the ventilation device is currently complex, which requires a lot of time and manpower. Summary of the invention

[0007] In view of the above problems, the present invention proposes a pure electric tractor gearbox to overcome the above problems or at least partially solve the above problems.

[0008] A pure electric tractor gearbox is provided with a main body and a ventilation part, wherein the ventilation part comprises a main body, a main body ring, a main valve core and a secondary valve core; the main body is connected to the main body, and the main body is provided with a main flow channel, a secondary flow channel and a central flow channel, one end of the main flow channel is connected to the interior of the main body, one end of the secondary flow channel is connected to the interior of the main body, one end of the central flow channel is connected to the outside atmosphere, and the main body ring is arranged in the main body; the secondary valve core is slidably arranged in the main body through a secondary valve spring, and the secondary valve spring can push the secondary valve core to move in a direction close to the central flow channel and abut against the main body ring to cut off the connection between the other end of the secondary flow channel and the other end of the central flow channel; the main valve core is connected to the main body ring through the main valve A spring is slidingly arranged on the auxiliary valve core, and the main valve spring can drive the main valve core to move toward the direction close to the main channel and abut against the auxiliary valve core to cut off the connection between the other end of the main channel and the other end of the central channel; the ventilation part also includes an air flow channel module; the air flow channel module is arranged on the main body, and the central flow channel is arranged in the air flow channel module in a reciprocating bending manner; the air flow channel module includes a flow channel cover, an upper cover and a bottom plate constituting the central flow channel; the flow channel cover is composed of a plurality of vertical plates connected, the upper cover is arranged on the top of the flow channel cover, the bottom plate is arranged on the bottom of the flow channel cover, and the bottom plate can reciprocate in the vertical direction relative to the flow channel cover inside the flow channel cover.

[0009] Preferably, the ventilation part also includes a one-way plate, and a collecting hole is provided on the bottom plate; one end of the collecting hole is connected to the central flow channel, and the other end extends to the upper area of ​​the auxiliary valve core; the one-way plate is arranged on a side of the bottom plate close to the main valve core, and can move back and forth relative to the bottom plate to form a blockage and opening of the collecting hole.

[0010] Preferably, the air flow channel module is detachably arranged on the main body; the flow channel cover is plug-in connected to the main body and can press and fix the main body ring in the main body.

[0011] Preferably, the ventilation part includes a control disk; the control disk is rotatably arranged on the main body, and a first track and a second track are provided on the control disk; the first track and the second track are connected and are both concentrically arranged with the control disk, and the width dimension of the first track is smaller than the width dimension of the second track; the flow channel cover is provided with a cover rod, and a cover rod groove is provided on the cover rod, and the cover rod groove can be clamped at the first track and move back and forth relatively along the first track; a cover spring is provided between the flow channel cover and the main body, and the cover spring can drive the flow channel cover to move upward with the cover rod at the second track to disengage from the connection with the main body.

[0012] Preferably, a third track is provided on the control panel, and a cover rod pin is eccentrically provided at the end of the cover rod; when the cover rod moves to the second track and the cover spring drives the flow channel cover to move upward, the cover rod can extend into the third track with the cover rod pin; the control panel can rotate synchronously with the cover rod pin through the third track.

[0013] Preferably, the upper cover is fixedly connected to the bottom plate, and can reciprocate in a vertical direction relative to the flow channel cover to form a connection with or separation from the flow channel cover.

[0014] Preferably, the ventilation part includes a control inner shaft and a control outer shaft; the control outer shaft is fixedly connected to the upper cover in the vertical direction, and the upper end of the control outer shaft is provided with an axis horizontal groove and an axis vertical groove connected to one end of the axis horizontal groove; the control inner shaft is rotatably arranged on the main body, and is passed through the interior of the control outer shaft in the vertical direction, and the control inner shaft can reciprocate relative to the control outer shaft; the top of the control inner shaft is provided with a transmission pin extending radially, and the transmission pin can move relative to the axis horizontal groove and the axis vertical groove; an axis spring is provided between the upper cover and the main body, which can drive the upper cover to move upward with the control outer shaft relative to the control inner shaft, and the transmission pin moves relatively along the axis vertical groove; the transmission pin can move to the axis horizontal groove to overcome the axis spring to fix the upper cover on the top of the flow channel cover.

[0015] Preferably, the control disk is provided with a fourth track, a fifth track, a sixth track, a seventh track, an eighth track, a ninth track and a tenth track which are connected in sequence, and an inner shaft pin is eccentrically provided at the end of the control inner shaft; when the inner shaft pin moves relatively along the fourth track, the transmission pin is located in the horizontal groove of the shaft, and the cover rod is located in the first track; when the inner shaft pin moves relatively along the fifth track, the transmission pin turns to the vertical groove of the shaft along the horizontal groove of the shaft, and the cover rod is located in the first track; when the inner shaft pin moves relatively along the sixth track, the transmission pin turns to the vertical groove of the shaft along the horizontal groove of the shaft, and the shaft spring pushes the upper cover to move upward, bringing the bottom plate upward away from the flow channel cover, the transmission pin moves relatively along the vertical groove of the shaft, and the cover rod is located in the first track; when the inner shaft pin moves relatively along the seventh track, the transmission pin passes through the The vertical groove of the shaft drives the control outer shaft to rotate, and the upper cover is turned away from the top of the flow channel cover, and the cover rod is located on the first track; when the inner shaft pin moves relatively along the eighth track and the ninth track, the transmission pin continues to rotate the base plate in the direction away from the flow channel cover through the vertical groove of the shaft, and the cover rod is located on the first track; when the inner shaft pin enters the tenth track, the cover rod enters the second track, and the cover spring pushes the flow channel cover to move upward relative to the main body, the cover rod groove passes through the second track to disengage from the connection with the control disk, and the cover rod pin enters the third track; when the inner shaft pin moves relatively along the tenth track, the transmission pin continues to rotate the base plate in the direction away from the flow channel cover through the vertical groove of the shaft, and the cover rod pin drives the cover rod to rotate, and the flow channel cover is turned away from the top of the main body.

[0016] Preferably, the upper cover and the bottom plate are detachably fixedly connected by a connecting rod.

[0017] Preferably, the main body and the main body part are connected by threads.

[0018] The pure electric tractor gearbox of the present invention has the following beneficial technical effects:

[0019] 1. In the present invention, by arranging the main valve core and the auxiliary valve core to cooperate with each other, when the internal air temperature of the pure electric tractor gearbox is working, the air inside the gearbox can be discharged through the main valve core, and when the internal air temperature is reduced, the air outside the gearbox can enter the gearbox through the auxiliary valve core, so that the internal pressure of the gearbox is kept stable, ensuring the normal operation of the internal parts of the gearbox and avoiding the deformation and wear of the seals caused by pressure changes. Leakage caused by oil.

[0020] 2. In the present invention, an air flow channel module consisting of an upper cover, a bottom plate and a flow channel cover is provided, so that when high-temperature air with oil vapor is discharged through the air flow channel module, the oil in the high-temperature air is liquefied into oil droplets under the action of the tortuous central flow channel in the air flow channel module, and the accumulated oil droplets flow back into the gearbox, thereby avoiding the loss of oil in the gearbox.

[0021] 3. In the present invention, the bottom plate is designed to be a separate and detachable structure from the flow channel cover, so that when the upper cover drives the bottom plate to withdraw from the flow channel cover, the inner wall of the flow channel cover can be cleaned through the bottom plate to avoid blockage of the air flow channel, facilitate cleaning, save time and effort.

[0022] 4. In the present invention, by setting a control disk, rotating the control disk can drive the upper cover and the flow channel cover to be unlocked in sequence, so that the upper cover drives the bottom plate to exit the flow channel cover. When the upper cover and the flow channel cover are separated from the main body, the main valve core and the auxiliary valve core can be quickly removed, which is convenient for replacement and maintenance and saves manpower. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 A three-dimensional view of the pure electric tractor gearbox of this embodiment;

[0024] Figure 2 Schematic diagram of the cross-sectional structure of the ventilation part in the gearbox of the pure electric tractor of this embodiment;

[0025] Figure 3 for Figure 2 Schematic diagram of the cross-sectional structure along the AA direction;

[0026] Figure 4 for Figure 2 Schematic diagram of the cross-sectional structure along the BB direction;

[0027] Figure 5 for Figure 2 Schematic diagram of the cross-sectional structure along the CC direction;

[0028] Figure 6 for Figure 2 Schematic diagram of the cross-sectional structure along the DD direction;

[0029] Figure 7 for Figure 5 The local enlarged schematic diagram of point I in the middle;

[0030] Figure 8 for Figure 5 A partial enlarged schematic diagram of position II in the middle;

[0031] Fig. 9 Schematic diagram of the cross-sectional structure of the bottom plate in this embodiment;

[0032] Fig.10Schematic diagram of the cross-sectional structure of the flow channel cover in this embodiment. DETAILED DESCRIPTION

[0033] The technical solution of the present invention is further described in detail below in conjunction with the accompanying drawings and embodiments.

[0034] Combination Figures 1 to 10 As shown, the pure electric tractor gearbox of this embodiment is provided with a main body 1 and a ventilation part 2, and the ventilation part 2 includes a main body 3, a main body ring 4, a main valve core 5 and a secondary valve core 6. Among them, the main body 3 can be connected to the main body 1 by means of threads, and a main flow channel 7, an auxiliary flow channel 8 and a central flow channel 9 are provided in the main body 3. One end of the main flow channel 7 is connected to the interior of the main body 1, and one end of the auxiliary flow channel 8 is also connected to the interior of the main body 1. One end of the central flow channel 9 is connected to the outside atmosphere, and the main body ring 4 is also provided in the main body 3. The secondary valve core 6 is slidably provided in the main body 3 by means of a secondary valve spring 10, and the secondary valve spring 10 can push the secondary valve core 6 to move in a direction close to the central flow channel 9 and abut against the main body ring 4, that is, to Figure 2 The main valve core 5 is slidably arranged on the auxiliary valve core 6 by the main valve spring 11, and the main valve spring 11 can drive the main valve core 5 to move in the direction close to the main flow channel 7 and abut against the auxiliary valve core 6, that is, to Figure 2 As shown, the valve moves in the downward direction to abut against the auxiliary valve core 6 to cut off the communication between the other end of the main flow channel 7 and the other end of the central flow channel 9.

[0035] In this embodiment, a main valve core and a sub-valve core are provided in the main body, and the main valve core and the sub-valve core can be opened and closed in opposite directions. Therefore, during the operation of the pure electric tractor gearbox, when the air temperature inside the main body increases, the internal air of the pure electric tractor gearbox can be discharged by opening the main valve core to connect the main flow channel and the central flow channel, and when the air temperature inside the main body decreases, the air outside the pure electric tractor gearbox can enter the interior of the main body by opening the sub-valve core to connect the auxiliary flow channel and the central flow channel, so that the internal pressure of the pure electric tractor gearbox is kept stable, the normal operation of the internal parts of the pure electric tractor gearbox is ensured, and the oil leakage caused by deformation and wear of the seals due to pressure changes is avoided.

[0036] In the pure electric tractor gearbox of this embodiment, the ventilation part also includes an air flow channel module. The air flow channel module is arranged on the main body 3, and the central flow channel 9 is arranged in the air flow channel module in a reciprocating bending manner. At this time, when the high-temperature air with oil vapor is discharged through the central flow channel in the air flow channel module, the oil in the high-temperature air is liquefied into oil droplets under the action of the tortuous central flow channel in the air flow channel module, thereby preventing the oil from being discharged with the air and avoiding the loss of oil in the pure electric tractor gearbox.

[0037] Combination Figures 1 to 10 As shown, the air flow channel module includes a flow channel cover 12, an upper cover 13 and a bottom plate 14 constituting a central flow channel 9. The flow channel cover 12 is composed of a plurality of vertical plates connected together, and the opening positions of adjacent vertical plates are staggered to form a reciprocating curved flow channel. The upper cover 13 is arranged on the top of the flow channel cover 12, and the bottom plate 14 is arranged on the bottom of the flow channel cover 12. The bottom plate 14 can reciprocate in the vertical direction relative to the flow channel cover 12 inside the flow channel cover 12.

[0038] In this embodiment, by providing a flow channel cover to form a central flow channel, the bottom plate is designed to be movably connected, so that the bottom plate can be controlled to move back and forth relative to the flow channel cover, thereby cleaning the inner wall of the flow channel cover, avoiding blockage of the central flow channel and facilitating cleaning, thereby ensuring the normal and stable operation of the pure electric tractor gearbox.

[0039] Combination Figure 4 and Fig. 9 As shown, in the pure electric tractor gearbox of this embodiment, a collecting hole 17 is further provided on the bottom plate 14. One end of the collecting hole 17 is connected to the central flow channel 9, and the other end extends to the upper area of ​​the auxiliary valve core 6.

[0040] At this time, the oil in the central flow channel can be quickly discharged to the area above the auxiliary valve core through the collecting hole. In this way, not only can the central flow channel be further prevented from being blocked, but the collected oil can also be led back to the interior of the pure electric tractor gearbox through the auxiliary flow channel when the auxiliary valve core is opened, thereby completing the reflux of the collected oil.

[0041] At the same time, combined Figure 2 and Figure 3 As shown, in the pure electric tractor gearbox of this embodiment, the ventilation part 2 is also provided with a one-way plate 15. The one-way plate 15 is arranged on one side of the bottom plate 14 close to the main valve core 5, that is, Figure 2 At the lower position of the bottom plate 14 , the one-way sheet 15 can reciprocate vertically relative to the bottom plate 14 to block and open the collecting hole 17 .

[0042] By arranging a one-way plate that can move back and forth in the vertical direction under the bottom plate to control the blocking and opening of the collecting hole, when the main valve core is opened to discharge the internal air, the one-way plate can be pushed upward by the internal air to form a blockage for the collecting hole, thereby ensuring the smooth discharge of the internal air from the central flow channel. Conversely, when the discharge of the internal air is stopped, the one-way plate will automatically fall downward to the main body ring and break away from the contact with the bottom plate, thereby releasing the blockage of the collecting hole, allowing the oil in the central flow channel to be discharged through the collecting hole, thereby ensuring the timely recycling of the oil.

[0043] Combination Figures 1 to 10 As shown, in the pure electric tractor gearbox of this embodiment, the air flow channel module is detachably arranged on the main body 3. Specifically, the flow channel cover 12 is plug-in connected to the main body 3, and the main body ring 4 can be pressed and fixed in the main body 3. In this way, by removing the air flow channel module from the main body, the components inside the main body, such as the main body ring, can be conveniently disassembled, assembled and replaced, thereby improving the convenience of maintenance of the pure electric tractor gearbox.

[0044] Combination Figures 1 to 10 As shown, in this embodiment, the ventilation part further includes a control panel 18. The control panel 18 is rotatably arranged on the main body 3, and a first track 19 and a second track 20 are arranged on the control panel 18. The first track 19 and the second track 20 are connected and are both arranged concentrically with the control panel 18. The width of the first track 19 is smaller than the width of the second track 20. Figure 8 As shown, along the radial direction of the control disk 18, the size of the first track 19 is smaller than that of the second track 20. At the same time, the flow channel cover 12 is provided with a cover rod 21 extending downward, and the cover rod 21 is provided with a cover rod groove 22, and the cover rod groove 22 can be clamped at the first track 19 and relatively reciprocate along the first track 19. A cover spring 23 is provided between the flow channel cover 12 and the main body 3, and the cover spring 23 can drive the flow channel cover 12 to move upward with the cover rod 21 at the second track 20 and break away from the connection with the main body 3, that is, when the cover rod 21 moves relatively along the first track 19 to the second track 20, the width of the second track 20 becomes larger and the cover rod groove 22 breaks away from the clamp connection with the control disk 18, so that under the action of the cover spring 23, the flow channel cover 12 can be pushed to move with the cover rod 21 to the second track 20. Figure 2 The upward movement shown causes the flow channel cover 12 to be disconnected from the main body 3 from above.

[0045] At this time, by driving the control disk to rotate, the first track and the second track are driven to reciprocate relative to the cover rod, and then with the help of the cover spring, the flow channel cover can be disassembled and assembled. According to the position of the main body ring in the main body, by adjusting the setting position of the cover rod groove, when the cover rod groove and the first track form a caliper, the flow channel cover can be pressed on the main body ring, thereby fixing the main body ring in the main body and completing the positioning and fixing of the main body ring.

[0046] Combination Figure 8 As shown, in the pure electric tractor gearbox of this embodiment, the control disk 18 is further provided with a third track 24, and a cover rod pin 25 is eccentrically provided at the end of the cover rod 21. When the cover rod 21 moves to the second track 20 and the cover spring 23 drives the flow channel cover 12 to move upward, the cover rod 21 can extend into the third track 24 with the cover rod pin 25, and the control disk 18 can rotate synchronously with the cover rod pin 25 through the third track 24.

[0047] At this time, when the control disk is rotated until the cover rod enters the second track, on the one hand, the cover spring pushes the flow channel cover to move upward and out of the main body, and on the other hand, the upward movement of the cover rod causes the cover rod pin to enter the third track. Then, the control disk is rotated again, and the cover rod pin can be driven to rotate around the axis of the cover rod through the third track, so that the cover rod drives the flow channel cover to rotate, and the flow channel cover is moved away from above the main body, clearing the space above the main body, so as to facilitate the disassembly and replacement of the main ring, main valve core and auxiliary valve core inside the main body, thereby improving the convenience of operation.

[0048] Combination Figure 4 As shown, in the pure electric tractor gearbox of this embodiment, the upper cover 13 is fixedly connected to the bottom plate 14. In this way, the upper cover and the bottom plate can simultaneously reciprocate in the vertical direction relative to the flow channel cover to form a connection or separation with the flow channel cover at the same time, and realize the cleaning operation of the inner wall of the flow channel cover during the removal of the bottom plate.

[0049] Specifically, the upper cover 13 and the bottom plate 14 are detachably fixedly connected via a connecting rod 26 , for example, a screw-shaped connecting rod 26 is used to facilitate disassembly and cleaning of the bottom plate 14 , thereby further improving the convenience of cleaning and maintenance of the pure electric tractor gearbox.

[0050] Combination Figure 2 and Figure 6 As shown, in the pure electric tractor gearbox of this embodiment, the ventilation part 2 also includes a control inner shaft 27 and a control outer shaft 28. Among them, the control outer shaft 28 is fixedly connected to the upper cover 13 in the vertical direction, and the upper end of the control outer shaft 28 is provided with an axis horizontal groove 29 and an axis vertical groove 30 connected to one end of the axis horizontal groove 29. The control inner shaft 27 is rotatably arranged on the main body 3, and is penetrated in the interior of the control outer shaft 28 in the vertical direction. The control inner shaft 27 can reciprocate relative to the control outer shaft 28, that is, it can perform relative rotation in the circumferential direction and relative movement in the vertical direction. The top of the control inner shaft 27 is provided with a transmission pin 31 extending in the radial direction, and the transmission pin 31 can move relatively along the axis horizontal groove 29 and the axis vertical groove 30. An axis spring 32 is provided between the upper cover 13 and the main body 3, which can drive the upper cover 13 to move upward with the control outer shaft 28 relative to the control inner shaft 27, and the transmission pin 31 moves relatively along the axis vertical groove 30. In addition, the driving pin 31 can also move to an end of the shaft horizontal groove 29 away from the shaft vertical groove 30 to overcome the shaft spring 32 and install and position the upper cover 13 on the top of the flow channel cover 12.

[0051] In this embodiment, by setting a control outer shaft on the upper cover, setting a control inner shaft on the main body, and setting a transmission pin, a horizontal shaft groove and a vertical shaft groove between the control inner shaft and the control outer shaft, the upper cover and the bottom plate can be quickly disassembled and assembled by driving the control outer shaft and the control inner shaft to move relative to each other and under the action of the shaft spring.

[0052] Combination Figures 1 to 10 As shown, in the pure electric tractor gearbox of this embodiment, the control disk 18 is further provided with a fourth track 33, a fifth track 34, a sixth track 35, a seventh track 36, an eighth track 37, a ninth track 38 and a tenth track 39 which are connected in sequence, and an inner shaft pin 40 is eccentrically provided at the end of the control inner shaft 27. The inner shaft pin 40 extends into the above-mentioned tracks and can move relatively along the above-mentioned tracks.

[0053] During the process of rotating the control disk 18, when the inner shaft pin 40 moves relatively along the fourth track 33, the transmission pin 31 is located in the shaft horizontal slot 29, and the cover rod 21 is located in the first track 19. When the inner shaft pin 40 enters the fifth track 34, the inner shaft 27 is controlled to drive the transmission pin 31 to turn from the shaft horizontal slot 29 to the shaft vertical slot 30, and the cover rod 21 is located in the first track 19. When the inner shaft pin 40 enters the sixth track 35, the inner shaft 27 is controlled to drive the transmission pin 31 to turn from the shaft horizontal slot 29 to the shaft vertical slot 30, and the shaft spring 32 pushes the upper cover 13 to move upward, and the bottom plate 14 is brought upward away from the flow channel cover 12, and the transmission pin 31 moves relatively along the shaft vertical slot 30, and the cover rod 21 is located in the first track 19. When the inner shaft pin 40 enters the seventh track 36, the transmission pin 31 drives the outer shaft 28 to rotate through the shaft vertical slot 30, and the upper cover 13 and the bottom plate 14 are turned away from the top of the flow channel cover 12, and the cover rod 21 is still located in the first track 19. When the inner shaft pin 40 moves relatively along the eighth track 37 and the ninth track 38, the transmission pin 31 continues to rotate the bottom plate 14 in the direction away from the flow channel cover 12 through the shaft vertical slot 30, and the cover rod 21 is located on the first track 19. When the inner shaft pin 40 enters the tenth track 39, the cover rod 21 enters the second track 20, the cover spring 23 pushes the flow channel cover 12 to move upward relative to the main body 3, the cover rod slot 22 passes through the second track 20 to break away from the connection with the control panel 18, and the cover rod pin 25 enters the third track 24. When the inner shaft pin 40 moves relatively along the tenth track 39, the transmission pin 31 continues to rotate the bottom plate 14 in the direction away from the flow channel cover 12 through the shaft vertical slot 30, and the cover rod pin 25 drives the cover rod 21 to rotate, turning the flow channel cover 12 away from the top of the main body 3.

[0054] By arranging multiple tracks that cooperate with the inner shaft pin on the control panel, the inner shaft can be driven by the inner shaft pin to rotate during the rotation of the control panel, thereby removing the upper cover and the bottom plate from the flow channel cover and further removing the upper cover and the bottom plate from above the flow channel cover, so that the control panel continues to rotate and then removes the flow channel cover from the main body, thereby realizing continuous operation and improving the convenience of operation.

[0055] Combination Figures 1 to 10 As shown, the relevant working process of the pure electric tractor gearbox in this embodiment is as follows:

[0056] When the pure electric tractor gearbox of this embodiment works for a long time, the internal temperature rises and the internal air pressure rises, the high-temperature air flows into the main flow channel 7, and the high-temperature air pushes the main valve core 5 to overcome the main valve spring 11 and move upward relative to the auxiliary valve core 6, connecting the main flow channel 7 with the central flow channel 9, so that the high-temperature air pushes the one-way plate 15 to block the collection hole 17 and enter the central flow channel 9 and flow out through the central flow channel 9, so that the internal pressure of the pure electric tractor gearbox drops and stabilizes the pressure. Among them, the oil vapor carried by the high-temperature air is accumulated in the bent central flow channel 9, and accumulates into oil droplets through long-term collection.

[0057] When the pure electric tractor gearbox of this embodiment stops working and the temperature drops, the internal pressure of the pure electric tractor gearbox drops, the one-way plate 15 loses the upward thrust of the internal air and falls onto the main ring 4, the oil droplets collected in the central flow channel 9 flow out of the flow channel cover 12 through the collection hole 17 to the upper area of ​​the auxiliary valve core 6, the external air flows through the central flow channel 9 to the auxiliary valve core 6 and pushes the auxiliary valve core 6 to overcome the auxiliary valve spring 10 and move downward relative to the main ring 4, connecting the auxiliary flow channel 8 with the central flow channel 9, allowing the external air to enter the interior of the pure electric tractor gearbox through the auxiliary flow channel 8, and the internal pressure of the pure electric tractor gearbox is increased to atmospheric pressure. At the same time, the auxiliary valve core 6 is separated from the main ring 4, so that the collected oil flows back to the interior of the pure electric tractor gearbox through the auxiliary flow channel 8, completing the recovery of the oil.

[0058] When the pure electric tractor gearbox of this embodiment needs maintenance after long-term operation, first, the control plate 18 is rotated so that the inner shaft pin 40 starts to move from Figure 7 The position shown in FIG. 1 is relatively moved along the fourth track 33, and the cover rod 21 starts to move from Figure 8The position shown moves relatively along the first track 19; when the inner shaft pin 40 moves relatively into the fifth track 34, the cover rod 21 is in the first track 19, and the fifth track 34 pushes the inner shaft pin 40 to control the inner shaft 27 to rotate, so that the transmission pin 31 slides along the horizontal groove 29 of the shaft; when the inner shaft pin 40 moves relatively into the sixth track 35, the cover rod 21 continues to be in the first track 19, and controls the rotation of the inner shaft 27 to move the transmission pin 31 along the horizontal groove 29 of the shaft to just above the vertical groove 30 of the shaft, and under the action of the shaft spring 32, the upper cover 13 is pushed to move upward, and the transmission pin 31 enters the vertical groove 30 of the shaft, and the upward movement of the upper cover 13 brings the bottom plate 14 to move synchronously, and the bottom plate 1 4. The inner wall of the flow channel cover 12 is scraped, and the impurities on the inner wall of the flow channel cover 12 are scraped onto the bottom plate 14. When the transmission pin 31 moves to the bottom of the shaft vertical groove 30, the upper cover 13 withdraws from the flow channel cover 12 with the bottom plate 14; when the inner shaft pin 40 moves relatively into the seventh track 36, the cover rod 21 continues to be in the first track 19, and the seventh track 36 pushes the inner shaft pin 40 to rotate with the control inner shaft 27, and then pushes the control outer shaft 28 to rotate through the transmission pin 31 and the shaft vertical groove 30, so that the upper cover 13 and the bottom plate 14 are turned away from the top of the flow channel cover 12; when the inner shaft pin 40 moves relatively into the eighth track 37, the cover rod 21 continues to be in the first track 19, and the inner shaft pin 40 moves to Figure 7 The left position of the inner shaft 27 is controlled as shown; when the inner shaft pin 40 moves relatively into the ninth track 38, the cover rod 21 continues to be in the first track 19, and the transmission pin 31 and the shaft vertical slot 30 continue to push the outer shaft 28 to rotate, and the upper cover 13 and the bottom plate 14 are rotated away from the flow channel cover 12; when the inner shaft pin 40 moves relatively into the tenth track 39, the cover rod 21 enters the second track 20, and the inner shaft pin 40 continues to push the outer shaft 28 to rotate, and the upper cover 13 and the bottom plate 14 are rotated to the farthest position away from the flow channel cover 12, and the cover rod 21 enters the second track 20 to make the cover rod slot 22 disengage from the control disk 1 8 is connected with the caliper, and under the action of the cover spring 23, the flow channel cover 12 is pushed to move upward and away from the main body 3, and the fixation of the main body ring 4 is released. At the same time, the flow channel cover 12 drives the cover rod pin 25 to enter the third track 24; when the inner shaft pin 40 moves relative to the tenth track 39, the cover rod 21 moves along the second track 20, and the control disk 18 rotates around the axis of the cover rod 21 with the cover rod pin 25 through the third track 24, so that the cover rod 21 rotates with the flow channel cover 12, so that the flow channel cover 12 is removed from the top of the main body 3, so that the main body ring 4, the main valve core 5 and the auxiliary valve core 6 can be disassembled and replaced, and the cleaning and maintenance work is completed.

[0059] When the maintenance of the pure electric tractor gearbox of this embodiment is completed and reset, first, the control disk 18 is driven to rotate in the opposite direction, so that the inner shaft pin 40 starts to move relatively along the tenth track 39, and the cover rod 21 starts to move relatively along the second track 20, and the cover rod pin 25 is driven to rotate in the opposite direction by the third track 24, so that the cover rod 21 and the flow channel cover 12 are driven to rotate in the opposite direction, and the flow channel cover 12 is rotated to the top of the main body 3, and then, the flow channel cover 12 is pushed to overcome the cover spring 23 and move downward into the main body 3, and then, the control disk 18 is driven to rotate in the opposite direction. When the inner shaft pin 40 enters the ninth track 38, the cover rod 21 enters the first track 19, and the cover rod groove 22 forms a caliper with the first track 19 of the control disk 18, locking the flow channel cover 12 in the main body 3, completing the positioning of the main body ring 4, and at the same time, the ninth track 38 drives the inner shaft pin 40 to rotate in the opposite direction, and drives the upper cover 13 and the bottom plate 14 to rotate in the opposite direction through the transmission pin 31 and the control outer shaft 28, and rotates to a position close to the top of the flow channel cover 12. When the inner shaft pin 40 enters the eighth track 37, the cover rod 21 slides along the first track 19, and the inner shaft pin 40 moves to Figure 7 As shown in the figure, the left position of the control inner shaft 27 is controlled. When the inner shaft pin 40 enters the seventh track 36, the cover rod 21 slides along the first track 19, and continues to drive the control inner shaft 27 and the control outer shaft 28 to rotate in the opposite direction through the inner shaft pin 40, and continues to rotate the upper cover 13 and the bottom plate 14 to a position close to the top of the flow channel cover 12. When the inner shaft pin 40 enters the sixth track 35, the cover rod 21 continues to slide along the first track 19, and drives the control inner shaft 27 and the control outer shaft 28 to rotate, so that the upper cover 13 and the bottom plate 14 are rotated to the top of the flow channel cover 12, and the upper cover 13 is pushed to overcome the shaft spring 32 and move downward, and the bottom plate 14 is pushed to the bottom of the flow channel cover 12, and the transmission pin 31 Move along the vertical groove 30 to the horizontal groove 29 of the shaft, and then continue to drive the control disk 18 to rotate in the opposite direction, so that the inner shaft pin 40 enters the fifth track 34, and the cover rod 21 continues to move along the first track 19. The fifth track 34 drives the inner shaft 27 to rotate through the inner shaft pin 40, and controls the inner shaft 27 to drive the transmission pin 31 to move along the horizontal groove 29 of the shaft. When the inner shaft pin 40 enters the fourth track 33, the cover rod 21 continues to remain in the first track 19, and controls the inner shaft 27 to drive the transmission pin 31 to move to the end of the horizontal groove 29 of the shaft, thereby locking the outer shaft 28, locking the upper cover 13 and the bottom plate 14, and resetting the pure electric tractor gearbox to a normal working state.

Claims

1. A pure electric tractor gearbox, characterized in that: The pure electric tractor gearbox is provided with a main body and a ventilation part, wherein the ventilation part comprises a main body, a main body ring, a main valve core and a secondary valve core; the main body is connected to the main body part, and the main body is provided with a main flow channel, a secondary flow channel and a central flow channel, one end of the main flow channel is communicated with the interior of the main body part, one end of the secondary flow channel is communicated with the interior of the main body part, one end of the central flow channel is communicated with the outside atmosphere, and the main body ring is arranged in the main body; the secondary valve core is slidably arranged in the main body by a secondary valve spring, and the secondary valve spring can push the secondary valve core to move in a direction close to the central flow channel and abut against the main body ring to cut off the communication between the other end of the secondary flow channel and the other end of the central flow channel; the main valve core is connected to the main body ring by a main valve spring The spring is slidingly arranged on the auxiliary valve core, and the main valve spring can drive the main valve core to move in the direction close to the main flow channel and abut against the auxiliary valve core to cut off the connection between the other end of the main flow channel and the other end of the central flow channel; the ventilation part also includes an air flow channel module; the air flow channel module is arranged on the main body, and the central flow channel is arranged in the air flow channel module in a reciprocating bending manner; the air flow channel module includes a flow channel cover, an upper cover and a bottom plate constituting the central flow channel; the flow channel cover is composed of a plurality of vertical plates connected, the upper cover is arranged on the top of the flow channel cover, the bottom plate is arranged on the bottom of the flow channel cover, and the bottom plate can reciprocate in the flow channel cover in the vertical direction relative to the flow channel cover; The air channel module is detachably arranged on the main body; the channel cover is plug-in connected to the main body and can press and fix the main body ring in the main body; The ventilation part includes a control disk; the control disk is rotatably arranged on the main body, and a first track and a second track are provided on the control disk; the first track and the second track are connected and are both concentrically arranged with the control disk, and the width dimension of the first track is smaller than the width dimension of the second track; the flow channel cover is provided with a cover rod, and a cover rod groove is provided on the cover rod, and the cover rod groove can be clamped at the first track and move back and forth relatively along the first track; a cover spring is provided between the flow channel cover and the main body, and the cover spring can drive the flow channel cover to move upward with the cover rod at the second track to break away from the connection with the main body.

2. The pure electric tractor gearbox according to claim 1, characterized in that: The ventilation part also includes a one-way plate, and a collecting hole is provided on the bottom plate; one end of the collecting hole is connected to the central flow channel, and the other end extends to the upper area of ​​the auxiliary valve core; the one-way plate is arranged on a side of the bottom plate close to the main valve core, and can move back and forth relative to the bottom plate to form a blockage and opening of the collecting hole.

3. The pure electric tractor gearbox according to claim 1, characterized in that: The control disk is provided with a third track, and a cover rod pin is eccentrically provided at the end of the cover rod; when the cover rod moves to the second track and the cover spring drives the flow channel cover to move upward, the cover rod can extend into the third track with the cover rod pin; the control disk can rotate synchronously with the cover rod pin through the third track.

4. The pure electric tractor gearbox according to claim 3, characterized in that: The upper cover is fixedly connected to the bottom plate, and can reciprocate in a vertical direction relative to the flow channel cover to form a connection with or separation from the flow channel cover.

5. The pure electric tractor gearbox according to claim 4, characterized in that: The ventilation part includes an inner control shaft and an outer control shaft; the outer control shaft is fixedly connected to the upper cover in the vertical direction, and the upper end of the outer control shaft is provided with an axis horizontal groove and an axis vertical groove connected to one end of the axis horizontal groove; the inner control shaft is rotatably arranged on the main body, and is passed through the interior of the outer control shaft in the vertical direction, and the inner control shaft can reciprocate relative to the outer control shaft; the top of the inner control shaft is provided with a transmission pin extending radially, and the transmission pin can move relative to the horizontal shaft groove and the vertical shaft groove; an axis spring is provided between the upper cover and the main body, which can drive the upper cover to move upward with the outer control shaft relative to the inner control shaft, and the transmission pin moves relatively along the vertical shaft groove; the transmission pin can move to the horizontal shaft groove to overcome the axis spring to fix the upper cover on the top of the flow channel cover.

6. The pure electric tractor gearbox according to claim 5, characterized in that: The control panel is provided with a fourth track, a fifth track, a sixth track, a seventh track, an eighth track, a ninth track and a tenth track which are connected in sequence, and an inner shaft pin is eccentrically provided at the end of the control inner shaft; when the inner shaft pin moves relatively along the fourth track, the transmission pin is located in the horizontal shaft groove, and the cover rod is located in the first track; when the inner shaft pin moves relatively along the fifth track, the transmission pin turns to the vertical shaft groove along the horizontal shaft groove, and the cover rod is located in the first track; when the inner shaft pin moves relatively along the sixth track, the transmission pin turns to the vertical shaft groove along the horizontal shaft groove, and the shaft spring pushes the upper cover to move upward, and brings the bottom plate upward away from the flow channel cover, the transmission pin moves relatively along the vertical shaft groove, and the cover rod is located in the first track; When the inner shaft pin moves relatively along the seventh track, the transmission pin drives the control outer shaft to rotate through the shaft vertical slot, so that the upper cover is turned away from the top of the flow channel cover, and the cover rod is located on the first track; When the inner shaft pin moves relatively along the eighth track and the ninth track, the transmission pin continues to rotate the base plate away from the flow channel cover through the shaft vertical slot, and the cover rod is located on the first track; when the inner shaft pin enters the tenth track, the cover rod enters the second track, the cover spring pushes the flow channel cover to move upward relative to the main body, the cover rod slot passes through the second track to disengage from the control disk, and the cover rod pin enters the third track; when the inner shaft pin moves relatively along the tenth track, the transmission pin continues to rotate the base plate away from the flow channel cover through the shaft vertical slot, and the cover rod pin drives the cover rod to rotate, thereby turning the flow channel cover away from the top of the main body.

7. The pure electric tractor gearbox according to claim 4, characterized in that: The upper cover and the bottom plate are detachably fixedly connected by a connecting rod.

8. The pure electric tractor gearbox according to claim 1, characterized in that: The main body is connected to the main body part by threading.

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