阅读说明：本技术 一种变速器以及收获机 (Transmission and harvester ) 是由 李洪江 王伟 冯向梁 刘圆 林本珠 张万庆 周伟 楚智伟 卓超 孙宗虎 谢兆星 于 2021-07-13 设计创作，主要内容包括：本发明提供了一种变速器以及收获机,变速器包括：动盘、定盘、滑动凸轮、固定凸轮、用于对动盘和定盘相对位置进行复位的弹性部件、支架以及输入轴合件,动盘通过弹性部件可轴向移动地设置在定盘上使得动盘向靠近定盘的方向轴向移动,动盘与滑动凸轮固定连接,定盘与固定凸轮连接,滑动凸轮与固定凸轮啮合且具有相对轴向滑动的行程,输入轴合件可转动地设置在支架上,输入轴合件的一端与定盘连接。使得动盘能够相对定盘轴向移动,自适应调整动盘和定盘之间的距离,提高收获机械不同作业工况的适应性。(The invention provides a transmission and a harvester, wherein the transmission comprises: the driving disk, the price fixing, the slip cam, the fixed cam, an elastomeric element for reseing driving disk and price fixing relative position, support and input shaft closes the piece, the driving disk passes through elastomeric element but sets up with axial displacement and makes the driving disk to the direction axial displacement who is close to the price fixing on the price fixing, driving disk and slip cam fixed connection, the price fixing is connected with the fixed cam, the slip cam just has relative endwise slip's stroke with the fixed cam meshing, the input shaft closes the piece and rotationally sets up on the support, the one end and the price fixing of input shaft close piece are connected. The movable disc can move axially relative to the fixed disc, the distance between the movable disc and the fixed disc is adjusted in a self-adaptive mode, and the adaptability of the harvesting machine under different working conditions is improved.)

1. A transmission, comprising: driving disk (2), price fixing (3), slip cam (4), fixed cam (5), be used for moving disk and price fixing relative position carry out the elastomeric element (7) that reset, support (17) and input shaft closes piece (6), driving disk (2) pass through elastomeric element (7) axially movable sets up make the driving disk to the direction axial displacement who is close to the price fixing on price fixing (3), driving disk (2) with slip cam (4) fixed connection, price fixing (3) with fixed cam (5) are connected, slip cam (4) with fixed cam (5) meshing just has relative axial sliding's stroke, input shaft closes piece (6) rotationally set up on support (17), the one end of input shaft closes piece (6) with price fixing (3) are connected.

2. A transmission according to claim 1, characterized in that one end of the elastic member (7) is connected to the carrier and the other end of the elastic member (7) is connected to the moving plate (2).

3. A transmission according to claim 2, characterised in that the elastic member (7) comprises: first spring (8), elastomeric element registrate piece (9) and guide bar (10), elastomeric element registrate piece (9) one end with driving disk (2) are connected, the other end slidable ground of elastomeric element registrate piece (9) sets up in input shaft registrate piece (6), slip cam (4) cover is established the middle part of elastomeric element registrate piece (9) and is connected with elastomeric element registrate piece (9), guide bar (10) run through in proper order input shaft registrate piece (6) and elastomeric element registrate piece (9), first spring (8) cover is established on guide bar (10), the one end of first spring (8) with the one end joint of guide bar (10), the other end of guide bar (10) rotationally sets up in input shaft registrate piece (6), first spring (8) set up in elastomeric element registrate piece (9), the other end of the first spring (8) is abutted against the inner wall of the elastic component sleeving piece (9) and matched with the elastic component sleeving piece to enable the movable disc and the fixed disc to clamp the belt.

4. A transmission according to claim 3, wherein the elastic member sleeve (9) is a combination of a flange (91) and a sleeve (92), the flange (91) is connected with the sleeve (92), the free end of the flange (91) is connected with the movable plate (2), one end of the flange (91) is connected with the sliding cam (4), the sliding cam (4) is sleeved on the outer side wall of the sleeve (92), the free end of the sleeve is provided with a baffle plate, the other end of the first spring abuts against the baffle plate, and the guide rod penetrates through the middle of the baffle plate.

5. A transmission according to claim 4, characterized in that the first spring (8) is a compression spring, one end of the guide rod (10) is provided with a bolt (11) and a washer (12) for abutting against the first spring, the bolt (11) and the washer (12) are sleeved on one end of the guide rod (10), one end of the first spring (8) abuts against the washer (12), the other end of the guide rod (10) is provided with a bearing (13), and the bearing (13) is arranged in the input shaft assembly (6).

6. The transmission of claim 1, characterized in that a flange (14) for mounting the movable plate (2) is arranged on the fixed plate (3), the movable plate (2) is movably sleeved on the flange (14), a sealing ring (15) is arranged on the inner wall of the flange (14), the sealing ring (15) is positioned between the fixed plate (3) and the fixed cam (5), an oil seal (16) is arranged on the outer side wall of the sliding cam (4), and the oil seal (16) is positioned between the sliding cam (4) and the fixed cam (5).

7. A transmission according to claim 1, characterized in that the fixed cam (5) is a cam structure having a plurality of teeth, and the sliding cam (4) is provided with a plurality of grooves adapted to the plurality of teeth.

8. The transmission of claim 1, further comprising: a clutch (19), the clutch (19) being connected to the input shaft assembly (6).

9. A transmission according to claim 8, characterized in that the clutch (19) comprises: clutch case (20), pressure disk seat (21), driven plate assembly (22) and pressure disk assembly (23), pressure disk seat (21) driven plate assembly (22) and pressure disk assembly (23) set up in clutch case (20), pressure disk seat (21) driven plate assembly (22) and pressure disk assembly (23) connect gradually, pressure disk seat (21) with input shaft closes the piece (6) and connects.

10. A harvester, comprising: a transmission according to any one of claims 1 to 9, further comprising a gear transmission mechanism (24), a parking brake mechanism (25) and a differential (26), said gear transmission mechanism (24) being connected to the clutch (19), the parking brake mechanism (25) and the differential (26), respectively.

Technical Field

The invention relates to the technical field of speed changing equipment, in particular to a speed changer and a harvester.

Background

The harvester needs different speeds according to different working conditions during operation, the speed changer without the torque increaser controls the speed of the vehicle through clutch, and therefore the clutch is worn early, the failure rate is high, and the operation efficiency is low.

Disclosure of Invention

The invention aims to solve the technical problem of the prior art and provides a transmission and a harvester.

The technical scheme for solving the technical problems is as follows: a transmission, comprising: movable disk, price fixing, slip cam, fixed cam, be used for carrying out the elastomeric element, support and the input shaft assembly that reset to movable disk and price fixing relative position, the movable disk passes through elastomeric element sets up with axially movable makes the movable disk to the direction axial displacement who is close to the price fixing on the price fixing, the movable disk with slip cam fixed connection, the price fixing with fixed cam connects, the slip cam with fixed cam meshing just has relative endwise slip's stroke, the input shaft assembly rotationally sets up on the support, the one end of input shaft assembly with the price fixing is connected.

The invention has the beneficial effects that: the arrangement of movable plate, fixed plate, slide cam, fixed cam and input shaft assembly spare makes movable plate can move relatively the fixed plate axial. The distance between self-adaptation adjustment driving disk and the fixed disk improves the adaptability of the different operation operating modes of harvest machinery, reduces the frequent process of shifting of the manipulator, and the setting of input shaft closes the piece for carry and transmit the power of derailleur, the installation and the maintenance of the derailleur of being convenient for.

Furthermore, one end of the elastic component is connected with the bracket, and the other end of the elastic component is connected with the movable disc.

Further, the elastic member includes: a first spring, an elastic component sleeve part and a guide rod, wherein one end of the elastic component sleeve part is connected with the movable disc, the other end of the elastic component nesting part is slidably arranged in the input shaft nesting part, the sliding cam is nested in the middle of the elastic component nesting part and is connected with the elastic component nesting part, the guide rod penetrates through the input shaft assembly and the elastic part sleeve assembly in sequence, the first spring is sleeved on the guide rod, one end of the first spring is clamped with one end of the guide rod, the other end of the guide rod is rotatably arranged in the input shaft assembly, the first spring sets up in the elastomeric element registrate spare, the other end of first spring with the inner wall butt of elastomeric element registrate spare to cooperation elastomeric element registrate spare makes driving disk and fixed disk can press from both sides tight belt.

The beneficial effect of adopting the further scheme is that: when the walking resistance changes greatly, the belt slides on the fixed disc, the belt drives the movable disc and the sliding cam to rotate for a micro angle relative to the fixed disc, so that the belt is tensioned until the slipping phenomenon is eliminated, in the process, the axial force applied to the movable disc by the belt overcomes the elastic force of the elastic part and begins to expand outwards, the spiral surface of the sliding cam moves along the spiral surface of the fixed cam, the pitch circle diameter of the combined structure of the movable disc and the fixed disc becomes small, and the speed increasing and torque reducing are realized; on the contrary, when the axial force of the belt on the movable disc is smaller than the elastic force of the elastic component, the movable disc starts to close, and the speed reduction and torque increase are realized.

Further, the elastic component nesting piece is of a flange and sleeve combined structure, the flange is connected with the sleeve, the free end of the flange is connected with the movable disc, one end of the flange is connected with the sliding cam, the sliding cam is sleeved on the outer side wall of the sleeve, the free end of the sleeve is provided with a baffle, the other end of the first spring is abutted to the baffle, and the guide rod penetrates through the middle of the baffle.

Furthermore, the first spring is a pressure spring, one end of the guide rod is provided with a bolt and a gasket used for abutting against the first spring, the bolt and the gasket are sleeved at one end of the guide rod, one end of the first spring abuts against the gasket, the other end of the guide rod is provided with a bearing, and the bearing is arranged in the input shaft assembly.

The beneficial effect of adopting the further scheme is that: the compression elastic component, the right-hand member is spacing in the elastic component registrates the piece, and the left end is spacing at the input shaft closes the piece right-hand member through packing ring and bolt, and elastic component's effect is overcome movable disk and fixed disk separation. When the ground resistance is small, the belt is tensioned, and the movable disc moves leftwards under the action of the tensioning force of the belt, so that the effective working diameter of a belt wheel consisting of the movable disc and the fixed disc is reduced, and the speed of the belt is increased. When the ground resistance is increased, the elastic component acts in a reverse direction to increase the effective working diameter of the belt wheel, thereby realizing speed reduction and torque increase.

Further, be provided with the flange that is used for installing the driving disk on the price fixing, the movably cover of driving disk is established on the flange, be provided with the sealing washer on the inner wall of flange, the sealing washer is located the price fixing with between the fixed cam, be provided with the oil blanket on the lateral wall of slide cam, the oil blanket is located slide cam with between the fixed cam.

The beneficial effect of adopting the further scheme is that: the meshing mechanism is arranged in the shell, and is completely separated from the outside through the sealing ring and the oil seal, so that flying dust is prevented from entering, and maintenance-free performance is realized. The setting of flange, the installation of the movable disk of being convenient for, the movable disk of being convenient for moves along the flange, carries on spacingly and direction to the movable disk.

Further, the fixed cam is of a cam structure with a plurality of convex teeth, and the sliding cam is provided with a plurality of grooves matched with the convex teeth.

The beneficial effect of adopting the further scheme is that: the arrangement of the convex teeth and the grooves facilitates the engagement of the sliding cam and the fixed cam, facilitates the axial movement of the sliding cam relative to the fixed cam, facilitates the power transmission and improves the stability and reliability of the transmission.

Further, still include: a clutch connected with the input shaft assembly.

The beneficial effect of adopting the further scheme is that: the setting of clutch is convenient for the input shaft closes the piece and with power transmission to devices such as gear transmission mechanism, and the installation and the maintenance of the input shaft closes the piece of being convenient for improve user experience.

Further, the clutch includes: clutch case, pressure disk seat, driven plate assembly and pressure disk assembly, the pressure disk seat the driven plate assembly and the pressure disk assembly sets up in the clutch case, the pressure disk seat the driven plate assembly and the pressure disk assembly connects gradually, the pressure disk seat with the input shaft closes the piece and connects.

The beneficial effect of adopting the further scheme is that: the arrangement of the clutch cover, the pressure plate seat, the driven plate assembly and the pressure plate assembly facilitates the installation and maintenance of the input shaft assembly, and improves the user experience.

In addition, the present invention also provides a harvester comprising: the transmission further comprises a gear transmission mechanism, a parking brake mechanism and a differential, wherein the gear transmission mechanism is connected with the clutch, the parking brake mechanism and the differential respectively.

The invention has the beneficial effects that: have the driving disk through the design, the fixed disk, the slip cam, the harvester of fixed cam and input shaft closes the piece, make the driving disk axial displacement under the effect of the tension of belt, distance between self-adaptation adjustment driving disk and the fixed disk, it is stepless adjustable in certain extent according to the ground load condition to realize the input speed, improve the adaptability of the different operation operating mode of harvesting machinery, reduce the frequent process of shifting of manipulator, do not need clutch control speed of a motor vehicle, reduce clutch wearing and tearing, the failure rate is reduced, the operating efficiency and the fuel economy are improved.

Advantages of additional aspects of the invention will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention.

Drawings

Fig. 1 is a schematic structural diagram of a transmission according to an embodiment of the present invention.

Fig. 2 is a second schematic structural diagram of a transmission according to an embodiment of the present invention.

Fig. 3 is a third schematic structural diagram of a transmission according to an embodiment of the present invention.

The reference numbers illustrate: 1-a belt; 2-a movable disc; 3-fixing the disc; 4-a sliding cam; 5-fixing the cam; 6-input shaft assembly; 7-an elastic member; 8-a first spring; 9-an elastic component nesting component; 91-a flange; 92-a sleeve; 10-a guide bar; 11-a bolt; 12-a gasket; 13-a bearing; 14-a flange; 15-sealing ring; 16-oil seal; 17-a scaffold; 19-a clutch; 20-a clutch cover; 21-platen base; 22-driven disk assembly; 23-a platen assembly; 24-a gear transmission mechanism; 25-a parking brake mechanism; 26-a differential; 27-a first straight-through type pressure filling oil cup; 28-second straight-through pressure filling oil cup; 29-flat bond; 30-second spring.

Detailed Description

The principles and features of this invention are described below in conjunction with the following drawings, which are set forth by way of illustration only and are not intended to limit the scope of the invention.

As shown in fig. 1 to 3, an embodiment of the present invention provides a transmission including: a movable plate 2 for realizing a gear ratio by axial movement, a fixed plate 3 for transmitting power to a gear transmission mechanism, a sliding cam 4 for engaging with the fixed plate and transmitting rotary power of the movable plate to the fixed plate, a fixed cam 5 for engaging with the movable plate and receiving rotary power of the fixed plate, an elastic member 7 for resetting the relative position of the movable plate and the fixed plate, a bracket 17 for supporting the fixed plate, and an input shaft assembly 6 for transmitting the rotary power of the fixed plate to the gear transmission mechanism, the movable plate 2 being axially movably provided on the fixed plate 3 by the elastic member 7 so that the movable plate is axially moved in a direction approaching the fixed plate, the movable plate 2 being fixedly connected with the sliding cam 4, the fixed plate 3 being fixedly connected with the fixed cam 5, the sliding cam 4 being engaged with the fixed cam 5 and having a stroke of relative axial sliding, the input shaft assembly 6 is rotatably arranged on the bracket 17, and one end of the input shaft assembly 6 is fixedly connected with the fixed plate 3.

The invention has the beneficial effects that: so that the movable plate can move axially relative to the fixed plate. The distance between self-adaptation adjustment driving disk and the fixed disk improves the adaptability of the different operation operating modes of harvest machinery, reduces the frequent process of shifting of the manipulator, and the setting of input shaft closes the piece for carry and transmit the power of derailleur, the installation and the maintenance of the derailleur of being convenient for.

The method can also comprise the following steps: the belt 1 is used for transmitting the power of the engine to the transmission, the belt 1 is arranged between the movable disc 2 and the fixed disc 3 and is abutted against the side walls of the movable disc and the fixed disc, and the belt 1 can be a V-shaped belt. The belt is V type belt, is convenient for the belt and moves movable disk and fixed disk butt, improves the friction area of belt.

The belt, the driving disk, the fixed disk, the slip cam, the setting of fixed cam and input shaft closes the piece, make the driving disk under the effect of the tension of belt axial displacement, distance between self-adaptation adjustment driving disk and the fixed disk, it is stepless adjustable in certain extent according to the ground load condition to realize the input speed, improve the adaptability of the different operation operating mode of harvest machinery, reduce the frequent process of shifting of tractor driver, do not need clutch control speed of a motor vehicle, reduce clutch wearing and tearing, the fault rate is reduced, the operating efficiency and the fuel economy are improved.

The belt is connected with the engine, power is transmitted to the movable disc and the fixed disc through the belt under the driving of the engine, the belt can generate tension to the movable disc and the fixed disc, the movable disc and the fixed disc form the belt pulley with the variable diameter, and the belt pulley with the variable diameter is the core of the continuously variable transmission. Each pulley consists of two opposing 20 degree cones. The belt is located in the groove between the two cones. If the belt is rubber, it is preferred to use a V-belt, which increases the frictional grip of the belt.

When the two cones of the pulley are far apart (i.e., increasing in diameter), the belt is located lower in the groove and the radius of the belt rotating about the pulley will decrease. When the two cones of the pulley are very close together (i.e., decreasing in diameter), the belt is located higher in the groove and the radius of the belt rotating about the pulley will become larger. Hydraulic pressure, centrifugal force, or spring tension may be used to generate the force required to adjust the pulley axle shafts.

The variable diameter pulleys must always be present in pairs. One of the pulleys, referred to as the drive pulley, is connected to the crankshaft of the engine. The drive pulley is also referred to as the input pulley because it is through this pulley that the engine's energy is transmitted to the transmission. The other pulley is called the driven pulley because it is rotated by the first pulley. The driven pulley acts as an output pulley and can transmit energy to the drive shaft.

The distance between the center of the pulley and the contact position of the belt in the groove is the pitch circle radius. When the pulley is far away, the belt is at a lower level and the pitch radius decreases. When the pulley is close, the belt is located higher and the pitch radius increases. The ratio of the pitch circle radius of the driving pulley to the pitch circle radius of the driven pulley determines the height of the gear.

As the radius of one pulley increases, the radius of the other pulley will decrease to keep the belt tight. As the two pulleys change their mutual radius, an infinite number of transmission ratios will result-all values from low to high. For example, when the pitch circle radius of the drive pulley is small and the radius of the driven pulley is large, the rotational speed of the driven pulley will decrease, thereby producing a lower "step". When the pitch circle radius of the drive pulley is larger and the radius of the driven pulley is smaller, the rotational speed of the driven pulley will increase, thereby producing a higher "gear". Thus, in theory, the transmission has an infinite number of "gears" that can be operated at any time, on any engine, or at any vehicle speed.

One end of the belt is connected with the combination of the movable disc and the fixed disc, and the other end of the belt is connected with the engine output transfer mechanism, so that power transmission is realized. The movable disc and the fixed disc form a belt pulley with a split structure. The input end of the speed changer is connected with the power input, and the output end of the speed changer is connected with the input shaft of the speed changer.

The transmission of the invention realizes stepless adjustment of the input rotating speed in a certain range according to the ground load condition, improves the adaptability of the harvesting machine under different working conditions, reduces the frequent gear shifting process of a manipulator, and improves the working efficiency and the fuel economy. Meanwhile, the cylindrical spiral cam structure is arranged in the shell, and is completely separated from the outside through the O-shaped sealing ring and the oil seal, so that flying dust is prevented from entering, and maintenance-free performance is realized.

Mainly comprises a speed changer, a gear transmission mechanism 24, a gear shifting mechanism, a parking brake mechanism 25 and a differential mechanism 26. The structures and principles of the gear transmission mechanism 24, the gear shifting mechanism, the parking brake mechanism 25 and the differential 26 are prior art and will not be described herein again.

The principle of the transmission can be seen as follows: the first patent is as follows: CN 207796006U-variable diameter type continuously variable transmission-public;

patent II: CN 103782731A-a combine threshing cylinder stepless speed change mechanism-open;

and (3) patenting: CN 2875030-Rice combine Walking stepless speed changer-open

And a fourth patent: CN 2532306-pulley automatic continuously variable transmission-discloses.

The four patents describe the principles of the transmission and the kinematic relationships between the various components in detail and are not repeated here.

A gear transmission mechanism: the power transmitted by the clutch is transmitted by the fixed-speed-ratio gear to realize speed change and torque change. Power is transmitted through the belt, the fixed disc is connected with the fixed cam through the bolt, the movable disc is connected with the sliding cam through the bolt, the sliding cam can move axially along with the movable disc, and the movable disc is pressed tightly against the belt under the action of elastic force of the elastic component, so that power is transmitted.

A first straight-through pressure fill cup 27 is arranged on the moving plate and a second straight-through pressure fill cup 28 is arranged on the spring assembly, the input shaft assembly penetrating the clutch cover and being connected to the pressure plate carrier by a flat key 29. The other end of the guide rod is sequentially provided with an oil seal, a check ring, a bearing and a check ring which are used for connecting the support. The pressure plate seat is arranged on the clutch cover through a retainer ring-bearing and a retainer ring. The driven disc assembly is arranged on the pressure disc seat through a bearing. The pressure plate assembly is installed on the driven plate assembly through the elastic cylindrical pin and the hexagonal head bolt.

Wherein, the O-shaped sealing ring, the oil seal, the fixed cam and the input shaft assembly only rotate and can not move axially; the elastic component sleeve assembly, the first spring, the second spring 30 and the sliding cam can rotate and can also axially move, and the elastic component sleeve assembly can also rotate at a small angle relative to the sliding cam and the input shaft assembly. The output shaft is connected with the fixed cam and the fixed disc through bolts to transmit power to the pressure disc seat. The elastic component is used for preventing the movable disc from separating from the fixed disc.

Further, one end of the elastic component 7 is connected with the bracket, and the other end of the elastic component 7 is connected with the movable disc 2.

As shown in fig. 1 to 3, further, the elastic member 7 includes: a first spring 8, an elastic part sleeve part 9 and a guide rod 10, wherein one end of the elastic part sleeve part 9 is connected with the movable disc 2, the other end of the elastic component nesting part 9 is exposed in the input shaft nesting part 6 in a sliding way, the sliding cam 4 is sleeved in the middle of the elastic component nesting part 9 and is connected with the elastic component nesting part 9, the guide rod 10 penetrates through the input shaft assembly 6 and the elastic component sleeve assembly 9 in sequence, the first spring 8 is sleeved on the guide rod 10, one end of the first spring 8 is clamped with one end of the guide rod 10, the other end of the guide rod 10 is rotatably arranged in the input shaft assembly 6, the first spring 8 is arranged in the elastic component sleeve assembly 9, and the other end of the first spring 8 is abutted with the inner wall of the elastic component sleeve assembly 9; when the driving disk moved left, the driving disk drove elastomeric element registrate piece 9 and moved left, and elastomeric element registrate piece 9 compresses first spring 8, and under the butt effect of support, first spring 8 promoted elastomeric element registrate piece 9 right under self elastic action, and elastomeric element registrate piece 9 drove the driving disk and moves right, and the driving disk can press from both sides tight belt with the fixed plate.

The beneficial effect of adopting the further scheme is that: when the walking resistance changes greatly, the belt slides on the fixed disc, the belt drives the movable disc and the sliding cam to rotate for a micro angle relative to the fixed disc, so that the belt is tensioned until the slipping phenomenon is eliminated, in the process, the axial force applied to the movable disc by the belt overcomes the elastic force of the elastic part and begins to expand outwards, the spiral surface of the sliding cam moves along the spiral surface of the fixed cam, the pitch circle diameter of the combined structure of the movable disc and the fixed disc becomes small, and the speed increasing and torque reducing are realized; on the contrary, when the axial force of the belt on the movable disc is smaller than the elastic force of the elastic component, the movable disc starts to close, and the speed reduction and torque increase are realized.

In order to improve the strength of the first spring, the second spring 30 may be sleeved inside the first spring, and the first spring is sleeved outside the second spring 30.

Furthermore, the elastic component nesting part 9 is a combined structure of a flange 91 and a sleeve 92, the flange 91 is connected with the sleeve 92, the free end of the flange 91 is connected with the movable disk 2, one end of the flange 91 is connected with the sliding cam 4, the sliding cam 4 is sleeved on the outer side wall of the sleeve 92, a baffle is arranged at the free end of the sleeve, the other end of the first spring is abutted to the baffle, and the guide rod penetrates through the middle part of the baffle.

As shown in fig. 1 to 3, further, the first spring 8 is a compression spring, one end of the guide rod 10 is provided with a bolt 11 and a washer 12 for abutting against the first spring, the bolt 11 and the washer 12 are sleeved on one end of the guide rod 10, one end of the first spring 8 abuts against the washer 12, the other end of the guide rod 10 is provided with a bearing 13, and the bearing 13 is arranged in the input shaft assembly 6.

The beneficial effect of adopting the further scheme is that: the compression elastic component, the right-hand member is spacing in the elastic component registrates the piece, and the left end is spacing at the input shaft closes the piece right-hand member through packing ring and bolt, and elastic component's effect is overcome movable disk and fixed disk separation. When the ground resistance is small, the belt is tensioned, and the movable disc moves leftwards under the action of the tensioning force of the belt, so that the effective working diameter of a belt wheel consisting of the movable disc and the fixed disc is reduced, and the speed of the belt is increased. When the ground resistance is increased, the elastic component acts in a reverse direction to increase the effective working diameter of the belt wheel, thereby realizing speed reduction and torque increase.

The purpose of the two elastic members in the figures is to increase the stress of the elastic members and to improve the stability and reliability of the transmission.

As shown in fig. 1 to 3, further, the movable plate 2 is connected to the slide cam 4 by a screw.

The beneficial effect of adopting the further scheme is that: the fixed cam is connected with the fixed disc through a bolt, and the sliding cam is connected with the movable disc through threads. There will be a small degree of relative rotation as the speed changes.

As shown in fig. 1 to 3, further, a flange 14 for mounting the movable disk 2 is arranged on the fixed disk 3, the movable disk 2 is movably sleeved on the flange 14, a sealing ring 15 is arranged on an inner wall of the flange 14, the sealing ring 15 is located between the fixed disk 3 and the fixed cam 5, an oil seal 16 is arranged on an outer side wall of the sliding cam 4, and the oil seal 16 is located between the sliding cam 4 and the fixed cam 5.

The beneficial effect of adopting the further scheme is that: the meshing mechanism is arranged in the shell, and is completely separated from the outside through the sealing ring and the oil seal, so that flying dust is prevented from entering, and maintenance-free performance is realized. The setting of flange, the installation of the movable disk of being convenient for, the movable disk of being convenient for moves along the flange, carries on spacingly and direction to the movable disk.

As shown in fig. 1 to 3, further, the fixed cam 5 has a cam structure with a plurality of convex teeth, and the sliding cam 4 is provided with a plurality of grooves adapted to the plurality of convex teeth.

The beneficial effect of adopting the further scheme is that: the arrangement of the convex teeth and the grooves facilitates the engagement of the sliding cam and the fixed cam, facilitates the axial movement of the sliding cam relative to the fixed cam, facilitates the power transmission and improves the stability and reliability of the transmission.

Wherein, the groove is in a V shape.

As shown in fig. 1 to 3, further, the method further includes: a clutch 19, wherein the clutch 19 is connected with the input shaft assembly 6.

The beneficial effect of adopting the further scheme is that: the setting of clutch is convenient for the input shaft closes the piece and with power transmission to devices such as gear transmission mechanism, and the installation and the maintenance of the input shaft closes the piece of being convenient for improve user experience.

As shown in fig. 1 to 3, further, the clutch 19 includes: the clutch cover 20, the pressure plate seat 21, the driven plate assembly 22 and the pressure plate assembly 23 are arranged in the clutch cover 20, the pressure plate seat 21, the driven plate assembly 22 and the pressure plate assembly 23 are sequentially connected, and the pressure plate seat 21 is connected with the input shaft assembly 6.

The beneficial effect of adopting the further scheme is that: the arrangement of the clutch cover, the pressure plate seat, the driven plate assembly and the pressure plate assembly facilitates the installation and maintenance of the input shaft assembly, and improves the user experience.

As shown in fig. 1 to 3, in addition, the present invention provides a harvester, which includes: the transmission further comprises a gear transmission mechanism 24, a parking brake mechanism 25 and a differential 26, wherein the gear transmission mechanism 24 is connected with the clutch 19, the parking brake mechanism 25 and the differential 26 respectively.

The invention has the beneficial effects that: have the driving disk through the design, the fixed disk, the slip cam, the harvester of fixed cam and input shaft closes the piece, make the driving disk axial displacement under the effect of the tension of belt, distance between self-adaptation adjustment driving disk and the fixed disk, it is stepless adjustable in certain extent according to the ground load condition to realize the input speed, improve the adaptability of the different operation operating mode of harvesting machinery, reduce the frequent process of shifting of manipulator, do not need clutch control speed of a motor vehicle, reduce clutch wearing and tearing, the failure rate is reduced, the operating efficiency and the fuel economy are improved.

Finally, it should be noted that: the above embodiments are only used to illustrate the technical solution of the present invention, and not to limit the same; while the invention has been described in detail and with reference to the foregoing embodiments, it will be understood by those skilled in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some or all of the technical features may be equivalently replaced; and the modifications or the substitutions do not make the essence of the corresponding technical solutions depart from the scope of the technical solutions of the embodiments of the present invention.