阅读说明：本技术 一种拖拉机无级变速操纵装置 (Tractor stepless speed change control device ) 是由 陆凤祥 韦海旗 王正丽 于 2021-08-30 设计创作，主要内容包括：本发明公开了一种拖拉机无级变速操纵装置,包括无级变速器传动方轴、无级变速器控制摇臂、缓冲拉杆、脚踏板连接件、前进脚踏板、后退脚踏板、中立摇臂和中立定位杆。本发明通过在缓冲拉杆中的缓冲垫可对前进、后退脚踏板的形成缓冲作用,同时设置的阻尼杆可减缓回位弹簧的冲击力,同时也可增加对脚踏板的缓冲,并且通过脚部操纵即可实现拖拉机的无级变速,轻松、便捷。(The invention discloses a tractor stepless speed change control device, which comprises a stepless speed change transmission square shaft, a stepless speed change control rocker arm, a buffer pull rod, a pedal connecting piece, a forward pedal, a backward pedal, a neutral rocker arm and a neutral positioning rod. The invention can form the buffer function to the forward and backward pedal through the buffer cushion in the buffer pull rod, the damping rod can reduce the impact force of the return spring, and simultaneously can increase the buffer to the pedal, and the stepless speed change of the tractor can be realized through foot operation, which is easy and convenient.)

1. The utility model provides a tractor infinitely variable control device which characterized in that: comprises a continuously variable transmission square shaft (1), a continuously variable transmission control rocker (2), a buffer pull rod (3), a pedal connecting piece (4), a forward pedal (5), a backward pedal (6), a neutral rocker (7) and a neutral positioning rod (8), the transmission square shaft (1) of the continuously variable transmission is connected with a control rocker arm (2) of the continuously variable transmission, the upper end of the stepless speed changer control rocker arm (2) is connected with the rocker arm of the buffer pull rod (3), the front end of the buffer pull rod (3) is connected with the upper end of the pedal connecting piece (4), the front end and the rear end of the pedal connecting piece (4) are respectively connected with a forward pedal (5) and a backward pedal (6), the front end of the stepless speed changer control rocker arm (2) is connected with a neutral rocker arm (7), the front end of the neutral positioning rod (8) is connected with a neutral rocker arm (7);

a buffer pad is arranged in the buffer pull rod (3);

the bottom of the pedal connecting piece (4) is connected with a damping rod (41);

the bottoms of the forward pedal (5) and the backward pedal (6) are respectively and correspondingly provided with a front limit bolt (51) and a rear limit bolt (61);

the upper end of the neutral rocker arm (7) is connected with a return spring (71).

2. The tractor continuously variable transmission operating device according to claim 1, characterized in that: and a neutral positioning rod limiting bolt (81) is arranged at the rear end of the neutral positioning rod (8).

3. The tractor continuously variable transmission operating device according to claim 1, characterized in that: the bottom of the neutral rocker arm (7) is connected with a bearing.

Technical Field

The invention relates to the field of tractor control mechanisms, in particular to a tractor stepless speed change control device.

Background

The tractor is a self-propelled power machine for drawing and driving operation machinery to complete various movable operations, also can be used as fixed operation power, and is formed from three portions of engine, chassis and electric equipment. Tractors classified into agricultural, industrial and special uses according to function and use; and are classified into wheel type, crawler type, boat type, self-propelled chassis and other tractors according to the structure type.

At present, the operating mode of the operating mechanism of the traditional tractor is complex, and the traditional tractor needs frequent gear shifting and is time-consuming and labor-consuming.

Disclosure of Invention

Accordingly, to address the above-mentioned deficiencies, the present invention provides a tractor continuously variable transmission operating device.

The invention is realized in this way, construct a kind of tractor stepless speed change control device, the device includes the transmission square shaft of the stepless speed change gear, stepless speed change gear control rocker arm, cushion the tie rod, the foot pedal link, the foot pedal of the forward running, the foot pedal of the backward running, neutral rocker arm and neutral positioning lever, the transmission square shaft of the said stepless speed change gear links with stepless speed change gear control rocker arm, the upper end of control rocker arm of the said stepless speed change gear links with rocker arm of the cushion the tie rod, the front end of the said cushion tie rod links with upper end of foot pedal link, both ends link with foot pedal of the forward running, foot pedal of the backward running separately in front of the said foot pedal link, the front end of control rocker arm of the said stepless speed change gear links with neutral rocker arm, the front end of the said neutral positioning lever links with neutral rocker arm;

a buffer pad is arranged in the buffer pull rod;

the bottom of the pedal connecting piece is connected with a damping rod;

the bottoms of the forward pedal and the backward pedal are respectively and correspondingly provided with a front limiting bolt and a rear limiting bolt;

the upper end of the neutral rocker arm is connected with a return spring.

Preferably, a neutral positioning rod limit bolt is provided at a rear end of the neutral positioning rod.

Preferably, the bottom of the neutral rocker arm is connected with a bearing.

The invention has the following advantages: the invention provides a tractor stepless speed change operating device through improvement, compared with the same type of equipment, the invention has the following improvement:

the method has the advantages that: the invention relates to a tractor stepless speed change control device, which can form a buffer function on forward and backward pedals through a buffer pad in a buffer pull rod, and meanwhile, the arranged damping rod can reduce the impact force of a return spring and increase the buffer on the pedals.

The method has the advantages that: the tractor stepless speed change control device can realize the stepless speed change of the tractor through foot control, and is easy and convenient.

Drawings

FIG. 1 is a schematic structural view of the present invention;

FIG. 2 is a rear view of the present invention;

FIG. 3 is a schematic view of the present invention in mounted connection with a hydrostatic continuously variable transmission;

FIG. 4 is a schematic top view of the present invention in mounted connection with a hydrostatic continuously variable transmission.

Wherein: the stepless speed changer comprises a transmission square shaft-1 of the stepless speed changer, a control rocker-2 of the stepless speed changer, a buffer pull rod-3, a pedal connecting piece-4, a forward pedal-5, a backward pedal-6, a neutral rocker-7, a neutral positioning rod-8, a hydrostatic stepless speed changer-9, a connecting rack-10, a damping rod-41, a front limiting bolt-51, a rear limiting bolt-61, a return spring-71 and a neutral positioning rod limiting bolt-81.

Detailed Description

The present invention will be described in detail with reference to fig. 1 to 4, and the technical solutions in the embodiments of the present invention will be clearly and completely described, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

The invention provides a tractor stepless speed change control device through improvement, which comprises a stepless speed change transmission square shaft 1, a stepless speed change control rocker arm 2, a buffer pull rod 3, a pedal connecting piece 4, a forward pedal 5, a backward pedal 6, a neutral rocker arm 7 and a neutral positioning rod 8, wherein the stepless speed change transmission square shaft 1 is connected with the stepless speed change control rocker arm 2, the upper end of the stepless speed change control rocker arm 2 is connected with the rocker arm of the buffer pull rod 3, the front end of the buffer pull rod 3 is connected with the upper end of the pedal connecting piece 4, the front end and the rear end of the pedal connecting piece 4 are respectively connected with the forward pedal 5 and the backward pedal 6, the front end of the stepless speed change control rocker arm 2 is connected with the neutral rocker arm 7, and the front end of the neutral positioning rod 8 is connected with the neutral rocker arm 7.

Furthermore, a cushion pad is arranged in the buffer pull rod 3, and can play a buffer role on the forward pedal 5 and the backward pedal 6.

The bottom of the pedal connecting piece 4 is connected with a damping rod 41, so that the impact force of a return spring 71 can be relieved, and meanwhile, the buffer of the forward pedal 5 and the backward pedal 6 can be increased.

The bottoms of the forward pedal 5 and the backward pedal 6 are respectively and correspondingly provided with a front limit bolt 51 and a back limit bolt 61, the initial positions of the forward pedal 5 and the backward pedal 6 are controlled by adjusting the front limit bolt 51 and the back limit bolt 61, and finally the forward and backward of the stepless speed change tractor are realized.

The upper end of the neutral rocker arm 7 is connected with a return spring 71, and the return spring 71 is used for returning the neutral rocker arm 7.

Further, a neutral positioning rod stopper bolt 81 is provided at the rear end of the neutral positioning rod 8, and the starting position of the neutral positioning rod 8 is controlled by adjusting the neutral positioning rod stopper bolt 81.

Further, a bearing is connected to the bottom of the neutral rocker arm 7, and the bearing is provided for rotation of the neutral rocker arm 7.

The invention provides a tractor stepless speed change control device through improvement, and the working principle is as follows;

firstly, a forward pedal 5 and a backward pedal 6 are controlled by feet through the connection of a transmission square shaft 1 of the continuously variable transmission and a control rocker arm 2 of the continuously variable transmission;

secondly, when the forward pedal 5 or the backward pedal 6 is stepped on, the rocker arm of the buffer pull rod 3 can drive the continuously variable transmission control rocker arm 2 to rotate, and meanwhile, the bearing on the neutral rocker arm 7 is extruded by rotation to drive the neutral rocker arm 7 to rotate, and at the moment, a pulling-up or rebounding effect is formed on the return spring 71;

thirdly, the starting position of the neutral positioning rod 8 is controlled by adjusting the neutral positioning rod limit bolt 81, and the starting positions of the forward pedal 5 and the backward pedal 6 are controlled by adjusting the front limit bolt 51 and the rear limit bolt 61, so that the forward and backward functions of the continuously variable tractor are finally realized;

fourthly, a cushion pad is provided in the cushion rod 3 to provide a cushion effect on the forward pedal 5 and the backward pedal 6, and a damping rod 41 is connected to the bottom of the pedal link 4 to reduce the impact force of the return spring 71 and increase the cushion effect on the forward pedal 5 and the backward pedal 6.

The invention provides a tractor stepless speed change control device through improvement, a buffer pad in a buffer pull rod 3 can buffer a forward pedal 5 and a backward pedal 6, meanwhile, a damping rod 41 can buffer the impact force of a return spring 71, meanwhile, the buffer of the forward pedal 5 and the backward pedal 6 can be increased, and the tractor stepless speed change can be realized through foot control, and the tractor stepless speed change control device is easy and convenient.

The basic principles and main features of the present invention and the advantages of the present invention have been shown and described, and the standard parts used in the present invention are all available on the market, the special-shaped parts can be customized according to the description and the accompanying drawings, the specific connection mode of each part adopts the conventional means of bolt and rivet, welding and the like mature in the prior art, the machinery, parts and equipment adopt the conventional type in the prior art, and the circuit connection adopts the conventional connection mode in the prior art, and the details are not described herein.

The previous description of the disclosed embodiments is provided to enable any person skilled in the art to make or use the present invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other embodiments without departing from the spirit or scope of the invention. Thus, the present invention is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.