CN213981960U - Pneumatic reversing mechanism of tractor gearbox - Google Patents
Pneumatic reversing mechanism of tractor gearbox Download PDFInfo
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- CN213981960U CN213981960U CN202022959629.2U CN202022959629U CN213981960U CN 213981960 U CN213981960 U CN 213981960U CN 202022959629 U CN202022959629 U CN 202022959629U CN 213981960 U CN213981960 U CN 213981960U
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- shifting fork
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- 230000007246 mechanism Effects 0.000 title claims abstract description 16
- 230000006835 compression Effects 0.000 claims description 5
- 238000007906 compression Methods 0.000 claims description 5
- 210000004907 gland Anatomy 0.000 claims description 4
- 238000009434 installation Methods 0.000 abstract description 2
- 238000012423 maintenance Methods 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 230000008569 process Effects 0.000 description 2
- 230000009471 action Effects 0.000 description 1
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- 238000012986 modification Methods 0.000 description 1
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Abstract
The utility model provides a pneumatic reversing mechanism of a tractor gearbox, which comprises a reversing cover plate arranged on a gearbox body, a reversing assembly arranged on the reversing cover plate, a mini cylinder used for driving the reversing assembly to be shifted and reversed and a pneumatic solenoid valve used for controlling the telescopic operation of the mini cylinder; the reversing assembly comprises a reversing shaft, a reversing rocker arm, a shifting block, a shifting fork shaft and a reversing shifting fork; the mini cylinder is controlled to stretch and retract through an electromagnetic signal of the pneumatic electromagnetic valve, so that the mini cylinder is used for driving the reversing shifting fork to be shifted and reversed, the forward and reverse gears of the gearbox are switched, the structure is simple, the installation is simple and convenient, the requirement of the operating skill of a driver is reduced, and meanwhile, the labor intensity of the driver is relieved.
Description
Technical Field
The utility model relates to a tractor field, concretely relates to pneumatic reversing mechanism of tractor gearbox.
Background
When a traditional tractor is operated in a reversing mode, a driver separates a main clutch to push a shift lever, a flexible shaft on the shift lever shifts a shift fork after the booster applies force, the shift fork drives an inner gear sleeve, and the inner gear sleeve is meshed with a forward or backward gear, so that the forward and backward of the tractor are realized.
When the power reversing tractor performs reversing operation, a driver realizes the forward and reverse of the tractor through the electric control wet clutch under the condition that the power is not interrupted, and the structure reduces the labor intensity of the driver, but has complex structure and higher cost; when the reversing mechanism breaks down, a professional maintenance worker is required to disassemble the box, the maintenance difficulty is high, and the working efficiency is influenced.
SUMMERY OF THE UTILITY MODEL
To the technical problem, the utility model provides a pneumatic reversing mechanism of tractor gearbox.
A pneumatic reversing mechanism of a tractor gearbox comprises a reversing cover plate arranged on a gearbox body, a reversing assembly arranged on the reversing cover plate, a mini cylinder used for driving the reversing assembly to engage and reverse gears and a pneumatic solenoid valve used for controlling the mini cylinder to stretch and retract;
the reversing assembly comprises a reversing shaft, a reversing rocker arm, a shifting block, a shifting fork shaft and a reversing shifting fork; the reversing shaft is mounted on the reversing cover plate through a deep groove ball bearing; the reversing rocker arm and the shifting block are respectively fixed at the upper end and the lower end of the reversing shaft; the shifting fork shaft is fixedly arranged at the bottom of the reversing cover plate; the reversing shifting fork is sleeved on the shifting fork shaft in a sliding manner, and the top of the reversing shifting fork is hinged with the shifting block;
one end of the reversing cover plate is provided with a cylinder support; a piston rod of the mini cylinder is hinged with the reversing rocker arm, and one end of the mini cylinder, which is far away from the piston rod, is hinged with the cylinder support; the mini cylinder is connected with the pneumatic electromagnetic valve through a cylinder air inlet pipe and a cylinder return air pipe.
Preferably, the reversing shifting fork is provided with a mounting hole, the outer end of the mounting hole is provided with a screw plug, the inner end of the mounting hole is provided with a self-locking pin, and a compression spring is arranged between the screw plug and the self-locking pin; and the shifting fork shaft is provided with a positioning hole matched with the self-locking pin.
Preferably, the reversing rocker arm and the shifting block are respectively installed at the upper end and the lower end of the reversing shaft through splines, and the reversing rocker arm and the shifting block are axially fixed by using a gland and a fastening bolt.
Preferably, a framework oil seal is arranged between the reversing shaft and the reversing cover plate.
Preferably, a piston rod of the mini cylinder is hinged to the reversing rocker arm through a fisheye joint and a joint bolt.
Preferably, the pneumatic electromagnetic valve is installed on the electromagnetic valve base through a bolt, the electromagnetic valve base is installed on the reversing cover plate through a bolt, and the reversing cover plate is installed on a box body of the gearbox through a bolt.
The utility model has the advantages that: 1. the telescopic operation of the mini cylinder is controlled by the electromagnetic signal of the pneumatic electromagnetic valve, so that the mini cylinder is utilized to drive the reversing shifting fork to engage and reverse, the switching of forward and reverse gears of the gearbox is realized, the labor intensity of a driver is reduced while the requirement of the operating skill of the driver is reduced, and the gear shifting is performed relative to an electric control wet clutch, the utility model has the advantages of simple structure and simple and convenient installation; 2. the reversing mechanism is directly arranged on the box body of the gearbox, and parts are in modular design and are directly arranged on the reversing cover plate, so that the reversing mechanism is convenient to maintain, and the comprehensive cost is low.
Drawings
The present invention will be further described with reference to the accompanying drawings.
Fig. 1 is a top view of an embodiment of the present invention;
FIG. 2 is a sectional view taken along line A-A of FIG. 1;
fig. 3 is a front view of an embodiment of the present invention;
FIG. 4 is a sectional view taken along line B-B of FIG. 3;
the figures in the drawings represent:
1. reversing cover plate 2, mini cylinder 3, pneumatic solenoid valve 4, reversing shaft 5 and reversing rocker arm
6. Shifting head 7, shifting fork shaft 8, reversing shifting fork 9, deep groove ball bearing 10 and framework oil seal
11. Gland 12, fastening bolt 13, positioning bolt 14, screw plug 15 and self-locking pin
16. Compression spring 17, positioning hole 18, cylinder support 19, cylindrical pin 20 and fisheye joint
21. The electromagnetic valve comprises a joint bolt 22, an electromagnetic valve base 23, a cylinder air inlet pipe 24 and a cylinder return air pipe.
Detailed Description
The technical solution in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, rather than all embodiments, and all other embodiments obtained by a person of ordinary skill in the art without creative work belong to the protection scope of the present invention based on the embodiments of the present invention.
In the description of the present invention, it should be understood that the terms "upper", "lower", "left", "right", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplification of the description, but do not indicate or imply that the device or element to be referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention.
As shown in fig. 1-4, a pneumatic reversing mechanism of a tractor gearbox comprises a reversing cover plate 1, wherein the reversing cover plate 1 is directly installed on a gearbox body of the gearbox through bolts, and a reversing assembly, a mini cylinder 2 for driving the reversing assembly to shift into gear and reverse and a pneumatic solenoid valve 3 for controlling the mini cylinder 2 to stretch and retract are arranged on the reversing cover plate 1.
The reversing component comprises a reversing shaft 4, a reversing rocker arm 5, a shifting block 6, a shifting fork shaft 7 and a reversing shifting fork 8. The reversing shaft 4 is arranged on the reversing cover plate 1 through a deep groove ball bearing 9, and a framework oil seal 10 is arranged between the reversing shaft 4 and the reversing cover plate 1. The reversing rocker arm 5 and the shifting block 6 are respectively arranged at the upper end and the lower end of the reversing shaft 4 through splines, and are axially fixed by a gland 11 and a fastening bolt 12. The shifting fork shaft 7 is fixedly arranged at the bottom of the reversing cover plate 1 through a positioning bolt 13, the reversing shifting fork 8 is sleeved on the shifting fork shaft 7 in a sliding mode, and the top of the reversing shifting fork 8 is hinged to the shifting head 6. The reversing shifting fork 8 is provided with a mounting hole, the outer end of the mounting hole is provided with a screw plug 14, the inner end of the mounting hole is provided with a self-locking pin 15, a compression spring 16 is arranged between the screw plug 14 and the self-locking pin 15, and the shifting fork shaft 7 is provided with a positioning hole 17 matched with the self-locking pin 15.
The left end of the reversing cover plate 1 is provided with a cylinder support 18, the left end of the mini cylinder 2 is hinged with the cylinder support 18 through a cylindrical pin 19, and a piston rod at the right end of the mini cylinder 2 is hinged with the reversing rocker arm 5 through a fisheye joint 20 and a joint bolt 21. The pneumatic electromagnetic valve 3 is installed on the electromagnetic valve base 22 through bolts, and the electromagnetic valve base 22 is installed on the reversing cover plate 1 through bolts. The mini cylinder 2 is connected with the pneumatic solenoid valve 3 through a cylinder inlet pipe 23 and a cylinder return air pipe 24.
The working process is as follows: when the tractor needs to advance, the complete machine air source enters the electromagnetic valve base 22 through the air pipe, the pneumatic electromagnetic valve 3 controls air to enter the mini cylinder 2 through the cylinder air inlet pipe 23, the piston rod of the mini cylinder 2 is pushed to move to the right, and the piston rod drives the reversing rocker arm 5 to rotate anticlockwise. When the reversing rocker arm 5 rotates, the shifting block 6 also rotates anticlockwise under the transmission of the reversing shaft 4, so that the reversing shifting fork 8 is driven to move axially along the shifting fork shaft 7, and the reversing shifting fork 8 is used for pushing a synchronizer in the gearbox to be hung in the front gear. When the reversing shifting fork 8 reaches a set stroke, the self-locking pin 15 is clamped into the corresponding positioning hole 17 under the action of the compression spring 16 to complete gear self-locking, so that the gear disengagement phenomenon is prevented, and the tractor finishes forward operation.
When the tractor needs to move backwards, the whole air source enters the electromagnetic valve base 22 through the air pipe, the pneumatic electromagnetic valve 3 controls air to enter the mini cylinder 2 through the cylinder return air pipe 24, the piston rod of the mini cylinder 2 is pushed to move left, and the piston rod drives the reversing rocker arm 5 to rotate clockwise. The shifting block 6 rotates synchronously with the shifting block, so that the reversing shifting fork 8 is driven to move, and the reversing shifting fork 8 is utilized to push a synchronizer in the gearbox to be connected into a reverse gear (the gear is self-locked in the same process), so that the tractor finishes the reverse operation.
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.
Claims (6)
1. The utility model provides a pneumatic reversing mechanism of tractor gearbox which characterized in that: the device comprises a reversing cover plate arranged on a gearbox body, a reversing assembly arranged on the reversing cover plate, a mini cylinder used for driving the reversing assembly to shift and reverse, and a pneumatic solenoid valve used for controlling the mini cylinder to stretch and retract;
the reversing assembly comprises a reversing shaft, a reversing rocker arm, a shifting block, a shifting fork shaft and a reversing shifting fork; the reversing shaft is mounted on the reversing cover plate through a deep groove ball bearing; the reversing rocker arm and the shifting block are respectively fixed at the upper end and the lower end of the reversing shaft; the shifting fork shaft is fixedly arranged at the bottom of the reversing cover plate; the reversing shifting fork is sleeved on the shifting fork shaft in a sliding manner, and the top of the reversing shifting fork is hinged with the shifting block;
one end of the reversing cover plate is provided with a cylinder support; a piston rod of the mini cylinder is hinged with the reversing rocker arm, and one end of the mini cylinder, which is far away from the piston rod, is hinged with the cylinder support; the mini cylinder is connected with the pneumatic electromagnetic valve through a cylinder air inlet pipe and a cylinder return air pipe.
2. The pneumatic reversing mechanism of the tractor gearbox as recited in claim 1, further comprising: the reversing shifting fork is provided with a mounting hole, the outer end of the mounting hole is provided with a screw plug, the inner end of the mounting hole is provided with a self-locking pin, and a compression spring is arranged between the screw plug and the self-locking pin; and the shifting fork shaft is provided with a positioning hole matched with the self-locking pin.
3. The pneumatic reversing mechanism of the tractor gearbox as recited in claim 1, further comprising: the reversing rocker arm and the shifting block are respectively installed at the upper end and the lower end of the reversing shaft through splines, and are axially fixed by using a gland and a fastening bolt.
4. The pneumatic reversing mechanism of the tractor gearbox as recited in claim 3, further comprising: and a framework oil seal is arranged between the reversing shaft and the reversing cover plate.
5. The pneumatic reversing mechanism of the tractor gearbox as recited in claim 1, further comprising: and a piston rod of the mini cylinder is hinged with the reversing rocker arm through a fisheye joint and a joint bolt.
6. The pneumatic reversing mechanism of a tractor gearbox according to any one of claims 1 to 5, characterized in that: the pneumatic electromagnetic valve is installed on the electromagnetic valve base through a bolt, the electromagnetic valve base is installed on the reversing cover plate through a bolt, and the reversing cover plate is installed on a box body of the gearbox through a bolt.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022959629.2U CN213981960U (en) | 2020-12-12 | 2020-12-12 | Pneumatic reversing mechanism of tractor gearbox |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022959629.2U CN213981960U (en) | 2020-12-12 | 2020-12-12 | Pneumatic reversing mechanism of tractor gearbox |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN213981960U true CN213981960U (en) | 2021-08-17 |
Family
ID=77242078
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202022959629.2U Active CN213981960U (en) | 2020-12-12 | 2020-12-12 | Pneumatic reversing mechanism of tractor gearbox |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN213981960U (en) |
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2020
- 2020-12-12 CN CN202022959629.2U patent/CN213981960U/en active Active
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CP03 | Change of name, title or address |
Address after: No. 1 Jingsi Road, Xuzhou Industrial Park, Xuzhou City, Jiangsu Province 221000 Patentee after: Xuzhou Kaier Agricultural Equipment Co.,Ltd. Country or region after: China Address before: 221000 No.1 Neijing 4th Road, Xuzhou Industrial Park, Jiangsu Province Patentee before: XUZHOU KAT AGRICULTURAL EQUIPMENT Co.,Ltd. Country or region before: China |
|
| CP03 | Change of name, title or address |