CN215322006U - Stepless speed change transmission device of walking system - Google Patents
Stepless speed change transmission device of walking system Download PDFInfo
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- CN215322006U CN215322006U CN202120965554.0U CN202120965554U CN215322006U CN 215322006 U CN215322006 U CN 215322006U CN 202120965554 U CN202120965554 U CN 202120965554U CN 215322006 U CN215322006 U CN 215322006U
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Abstract
The application belongs to the technical field of agricultural machinery, in particular to a stepless speed change transmission device of a traveling system, which comprises a frame, wherein an engine and a gearbox are arranged on the frame, an engine output belt wheel is arranged on an output shaft of the engine, a support is hinged on the frame and is provided with a stepless speed change wheel, a hinge point of the support and the stepless speed change wheel is not superposed with a central point of the stepless speed change wheel, the stepless speed change wheel comprises a fixed shaft, movable discs are movably arranged at two sides of the fixed shaft, a fixed disc is arranged between the two movable discs, a driving device is hinged on the frame, an output shaft of the driving device is hinged and connected with the stepless speed change wheel, the stepless speed change wheel is driven by the driving device to rotate around the hinge point, the engine output belt wheel is connected with the stepless speed change wheel through a first driving belt, a belt wheel is arranged on an input shaft of the gearbox, and the stepless speed change wheel is connected with a belt wheel on an input shaft of the gearbox through a second driving belt, the application realizes the stepless speed change of the speed of the walking system by changing the transmission ratio.
Description
Technical Field
The application belongs to the technical field of agricultural machinery, and particularly relates to a stepless speed change transmission device of a walking system.
Background
The statements in this section merely provide background information related to the present disclosure and may not necessarily constitute prior art.
As harvesting techniques mature more and more, users put higher demands on reliability, harvesting efficiency, maneuverability, etc. of harvesters. Therefore, the walking system is operated by stepless speed change and can be more suitable for frequent speed change operations such as turning around and transferring in the field during the harvesting operation of the harvester.
In order to meet the requirements of different models, the transmission device in the walking system also needs to be optimized and upgraded correspondingly.
SUMMERY OF THE UTILITY MODEL
In order to solve the above problems, the present application proposes a continuously variable transmission of a traveling system.
The application aims to provide a stepless speed change transmission device of a traveling system, which changes the position of a stepless speed change wheel so as to change the transmission ratio of an engine output belt wheel and the stepless speed change wheel, and the stepless speed change wheel and a belt wheel on an input shaft of a gearbox, thereby realizing the stepless speed change of the speed of the traveling system.
In order to achieve the purpose, the following technical scheme is adopted in the application:
a stepless speed change transmission device of a traveling system comprises a rack, wherein an engine and a gearbox are arranged on the rack, an engine output belt wheel is arranged on an output shaft of the engine, a support is hinged on the rack and provided with a stepless speed change wheel, a hinge point of the support and the stepless speed change wheel is not overlapped with a central point of the stepless speed change wheel, the stepless speed change wheel comprises a fixed shaft, movable plates are movably arranged on two sides of the fixed shaft, a fixed plate is arranged between the two movable plates, a driving device is hinged on the rack, an output shaft of the driving device is hinged with the stepless speed change wheel, the driving device drives the stepless speed change wheel to rotate around the hinge point, the engine output belt wheel is connected with the stepless speed change wheel through a first driving belt, a belt wheel is arranged on an input shaft of the gearbox, and the stepless speed change box is connected with a belt wheel on the input shaft of the gearbox through a second driving belt.
Further, an output shaft of the gearbox is connected with a drive axle assembly of the traveling system.
Furthermore, a stop block is fixedly arranged on the outer side of the fixed shaft.
Further, a plate is arranged on the support, a screw hole is formed in the plate, an adjusting screw rod is arranged in the screw hole, one end of the adjusting screw rod is hinged to the fixed shaft, a long hole is formed in the support, and the fixed shaft penetrates through the long hole.
Further, the driving device is any one of an oil cylinder or an electric cylinder.
Furthermore, the driving device is connected with an electro-hydraulic valve through an oil pipe, the controller is electrically connected with the electro-hydraulic valve, and the controller controls the electro-hydraulic valve to be opened and closed.
Further, the driving device is located close to the cab on the frame.
Furthermore, the belt wheels on the engine output belt wheel, the stepless speed change wheel and the gearbox are belt wheels, and the first transmission belt and the second transmission belt are belts matched with the belt wheels.
Furthermore, the support is U shaped steel, and the board is fixed in the recess of U shaped steel.
Further, the gearbox is arranged below the frame.
Compared with the prior art, the beneficial effect of this application is:
when the engine works, the stepless speed change wheel is driven to drive the gearbox to rotate, so that a harvester walking system runs, when the controller is shifted to a low speed, the speed change oil cylinder stretches out, the stepless speed change wheel is far away from a belt wheel on an input shaft of the gearbox and is close to an output belt wheel of the engine, and as the lengths of the first transmission belt and the second transmission belt cannot be obviously changed, the position of a movable disc of the stepless speed change wheel is changed, the diameter of a wheel groove connected with the output belt wheel of the engine is increased, the diameter of the wheel groove connected with the belt wheel on the input shaft of the gearbox is decreased, so that the transmission ratio of the whole system is increased, the rotating speed of the belt wheel on the input shaft of the gearbox is decreased, and the walking speed is reduced; when control handle dials to high-speed, the variable speed cylinder contracts the action, infinitely variable speed wheel is to being close to the epaxial band pulley of gearbox input, the position of keeping away from engine output band pulley removes, because the length of first drive belt and second drive belt can not take place obvious change, and then the driving disk position that leads to infinitely variable speed wheel changes, the race diameter that leads to being connected with engine output band pulley diminishes, the race diameter grow of being connected with the epaxial band pulley of gearbox input, entire system's drive ratio diminishes, the epaxial band pulley rotational speed grow of gearbox input, walking speed improves.
Drawings
The accompanying drawings, which are incorporated in and constitute a part of this application, illustrate embodiments of the application and, together with the description, serve to explain the application and are not intended to limit the application.
Fig. 1 is a schematic overall structure diagram of the present application.
Fig. 2 is a schematic view of the overall structure of the continuously variable transmission wheel of the present application.
Fig. 3 is a schematic structural diagram of the transmission device of the present application.
Fig. 4 is a schematic side view of the structure of fig. 3.
Fig. 5 is a schematic top view of fig. 3.
In the figure:
1. the device comprises a stepless speed change wheel, 2, a gearbox, 3, a support, 4, an adjusting screw rod, 5, a first transmission belt, 6, a second transmission belt, 7, a driving device, 8, an electric control hydraulic valve, 9, a controller, 10, an engine output belt wheel, 11, a rack, 12, a drive axle assembly, 13, a fixed disc, 14, a movable disc, 15 and a fixed shaft seat.
The specific implementation mode is as follows:
the present application will be further described with reference to the following drawings and examples.
It is noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of example embodiments according to the present disclosure. As used herein, the singular forms "a", "an" and "the" are intended to include the plural forms as well, and it should be understood that when the terms "comprises" and/or "comprising" are used in this specification, they specify the presence of stated features, steps, operations, devices, components, and/or combinations thereof, unless the context clearly indicates otherwise.
In the present disclosure, terms such as "upper", "lower", "left", "right", "front", "rear", "vertical", "horizontal", "side", "bottom", and the like indicate orientations or positional relationships based on those shown in the drawings, and are only relational terms determined for convenience in describing structural relationships of the parts or elements of the present disclosure, and do not refer to any parts or elements of the present disclosure, and are not to be construed as limiting the present disclosure.
Example 1
The embodiment is one or more specific implementation schemes of a walking system stepless speed change transmission device, and the walking system stepless speed change transmission device in the embodiment is used for a harvester and comprises a stepless speed change wheel, a gearbox, a support, an adjusting screw rod, a first transmission belt, a second transmission belt, a driving device, an electric control hydraulic valve, a controller, an engine output belt wheel, a frame, a drive axle assembly and the like.
In the embodiment, a frame is taken as a main body, positions and structures of various parts or equipment are described, the frame is a foundation for supporting most of the equipment or the parts, an engine is fixed on the frame through bolts, an engine output belt wheel is fixedly arranged on an output shaft of the engine, and the engine output belt wheel can be connected with the output shaft of the engine through a key connection.
The frame is hinged with a support, the support is hinged with a stepless speed change wheel, the stepless speed change wheel in the embodiment is also a core part of the embodiment, the engine output belt wheel is connected with the stepless speed change wheel through a first transmission belt, so that when the engine moves, the engine output belt wheel is driven by the engine output shaft to rotate, power is transmitted to the stepless speed change wheel through the first transmission belt, and the stepless speed change wheel can rotate.
The structure of the continuously variable transmission wheel in the present embodiment is: including fixed axle bed, the primary structure of fixed axle bed is the fixed axle, fixed mounting has the price fixing on the fixed axle, and has the driving disk in the both sides movable mounting of price fixing for the driving disk can remove along the fixed axle, and the position of driving disk is the adjustable, because there is the driving disk in the both sides of price fixing, consequently, the driving disk has formed two with the price fixing and can with drive belt complex cavity structure, one of them and first drive belt cooperation, and another and second drive belt cooperation.
As a specific embodiment, a stop block is fixedly arranged on the outer side of the fixed shaft to prevent the movable disc from being separated from the fixed shaft.
The infinitely variable speed wheel is connected with the gearbox through the second drive belt, and specifically, the second drive belt cooperates with the band pulley on the gearbox input shaft for power on the infinitely variable speed wheel passes through the second drive belt and transmits to the gearbox, and then for gearbox input power.
The output shaft of the gearbox is connected with the drive axle assembly, and the power input into the gearbox is transmitted to the drive axle assembly after being changed in speed by the gearbox, so that the walking work of the walking system is completed.
In a specific embodiment, the engine output pulley, the continuously variable transmission wheel and the pulley on the gearbox are all pulleys, and belts such as V-belts can be adopted as the first transmission belt and the second transmission belt, so that a reliable, safe and stable basis is provided for power transmission.
As specific embodiment, the support includes a U shaped steel, and a piece of fixed mounting in the recess of U shaped steel, the screw has been seted up on the board, and install accommodate the lead screw in the screw, the external screw thread of accommodate the lead screw's periphery and the interior screw-thread fit of screw, make accommodate the lead screw can take place position along the screw and remove, accommodate the lead screw's one end links together with the fixed axle is articulated, when making accommodate the lead screw take place position change along the screw, can drive the position of fixed axle and change, and then make the position of infinitely variable speed wheel change, set up rectangular hole on the support, make the position of infinitely variable speed wheel can be changed by accommodate the lead screw, and then accomplish first drive belt, the tensioning of second drive belt.
The stepless speed change wheel is eccentrically hinged with the support, the hinged point is arranged below the stepless speed change wheel, and a driving device, such as a speed change cylinder, is hinged on the rack, the speed change cylinder is arranged on the right side of the whole vehicle, the side where the cab is arranged is the right side, for example, the speed change cylinder adopts a speed change oil cylinder or an electric cylinder, the embodiment takes the speed change oil cylinder as an example, the output shaft of the speed change oil cylinder is hinged with a fixed shaft or the stepless speed change wheel, and the stepless speed change wheel is pulled or pushed to rotate around the hinged point through the speed change oil cylinder, so that the position of the stepless speed change wheel is changed.
The variable speed hydro-cylinder passes through oil pipe connection electro-hydraulic valve, and the controller control electro-hydraulic valve is opened, and then makes the variable speed hydro-cylinder take place to contract the action or extend the action, and then drives stepless change wheel and rotate around the pin joint and make first drive belt, second drive belt by the pulling, and first drive belt, second drive belt again with power transmission to driving disk on, and then make the driving disk remove along the fixed axle.
The working flow of this embodiment is: when the engine works, the stepless speed change wheel is driven to drive the gearbox to rotate, so that a walking system of the harvester runs, when the controller is shifted to a low speed, the speed change oil cylinder stretches out, the stepless speed change wheel is far away from a belt wheel on an input shaft of the gearbox and is close to an output belt wheel of the engine, and as the lengths of the first transmission belt and the second transmission belt cannot be obviously changed, the position of a movable disc of the stepless speed change wheel is changed, the diameter of a wheel groove connected with the output belt wheel of the engine is increased, the diameter of the wheel groove connected with the belt wheel on the input shaft of the gearbox is decreased, so that the transmission ratio of the whole system is increased, the rotating speed of the belt wheel on the input shaft of the gearbox is decreased, and the walking speed is reduced; when control handle dials to high-speed, the variable speed cylinder contracts the action, infinitely variable speed wheel is to being close to the epaxial band pulley of gearbox input, the position of keeping away from engine output band pulley removes, because the length of first drive belt and second drive belt can not take place obvious change, and then the driving disk position that leads to infinitely variable speed wheel changes, the race diameter that leads to being connected with engine output band pulley diminishes, the race diameter grow of being connected with the epaxial band pulley of gearbox input, entire system's drive ratio diminishes, the epaxial band pulley rotational speed grow of gearbox input, walking speed improves.
The above description is only a preferred embodiment of the present application and is not intended to limit the present application, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, improvement and the like made within the spirit and principle of the present application shall be included in the protection scope of the present application.
Although the embodiments of the present application have been described with reference to the accompanying drawings, it is not intended to limit the scope of the present application, and it should be understood by those skilled in the art that various modifications and variations can be made without inventive effort by those skilled in the art.
Claims (10)
1. The stepless speed change transmission device of the traveling system comprises a frame, wherein an engine and a gearbox are arranged on the frame, and the stepless speed change transmission device is characterized in that: an engine output belt wheel is arranged on an output shaft of the engine;
the frame is hinged with a support, the support is hinged with a stepless speed change wheel, the hinge point of the support and the stepless speed change wheel does not coincide with the central point of the stepless speed change wheel, the stepless speed change wheel comprises a fixed shaft, two sides of the fixed shaft are movably provided with movable discs, and a fixed disc is arranged between the two movable discs;
the frame is hinged with a driving device, an output shaft of the driving device is hinged with the stepless speed change wheel, and the driving device drives the stepless speed change wheel to rotate around a hinged point;
the output belt wheel of the engine is connected with a stepless speed change wheel through a first transmission belt, the input shaft of the gearbox is provided with a belt wheel, and the stepless speed change box is connected with the belt wheel on the input shaft of the gearbox through a second transmission belt.
2. The continuously variable transmission unit of a traveling system according to claim 1, wherein an output shaft of the transmission is connected to a transaxle assembly of the traveling system.
3. The continuously variable transmission unit of a traveling system according to claim 1, wherein a stopper is fixedly installed on an outer side of the fixed shaft.
4. The continuously variable transmission device of a traveling system according to claim 1, wherein the bracket is provided with a plate having a screw hole in which an adjusting screw is provided, one end of the adjusting screw being hinged to the fixed shaft;
the support is provided with a strip hole, and the fixed shaft penetrates through the strip hole.
5. The continuously variable transmission of a walking system as claimed in claim 1, wherein said driving means is any one of a cylinder or an electric cylinder.
6. The continuously variable transmission unit of a traveling system according to any one of claims 1 to 5, wherein the driving unit is connected to an electro-hydraulic valve through an oil pipe, and the controller is electrically connected to the electro-hydraulic valve and controls the electro-hydraulic valve to open and close.
7. The drive system of claim 1, wherein said drive means is located adjacent to a cab on the frame.
8. The continuously variable transmission unit of a traveling system according to claim 1, wherein the engine output pulley, the continuously variable transmission pulley, and the pulley on the transmission are pulleys, and the first transmission belt and the second transmission belt are belts engaged with the pulleys.
9. The continuously variable transmission unit of a traveling system according to claim 4, wherein said bracket is a U-shaped steel, and the plate is fixed in a groove of the U-shaped steel.
10. The continuous variable transmission of a travel system of claim 1, wherein the gearbox is disposed below the frame.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120965554.0U CN215322006U (en) | 2021-05-08 | 2021-05-08 | Stepless speed change transmission device of walking system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120965554.0U CN215322006U (en) | 2021-05-08 | 2021-05-08 | Stepless speed change transmission device of walking system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN215322006U true CN215322006U (en) | 2021-12-28 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202120965554.0U Active CN215322006U (en) | 2021-05-08 | 2021-05-08 | Stepless speed change transmission device of walking system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN215322006U (en) |
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2021
- 2021-05-08 CN CN202120965554.0U patent/CN215322006U/en active Active
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