CN209743563U - PTO gearbox for crawler tractor - Google Patents
PTO gearbox for crawler tractor Download PDFInfo
- Publication number
- CN209743563U CN209743563U CN201822134612.6U CN201822134612U CN209743563U CN 209743563 U CN209743563 U CN 209743563U CN 201822134612 U CN201822134612 U CN 201822134612U CN 209743563 U CN209743563 U CN 209743563U
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Abstract
A PTO gearbox for a caterpillar tractor comprises a box body part, an input shaft part, an intermediate shaft part, an output shaft part and a control valve part; the input shaft part comprises an input shaft, a clutch seat is connected with the input shaft through a flat key, and a first-gear clutch and a second-gear clutch, as well as a first-gear input gear and a second-gear input gear which are respectively arranged at the left side and the right side of the input shaft part; the intermediate shaft component comprises an intermediate shaft which is connected with a first-gear intermediate gear, a second-gear intermediate gear and an output intermediate gear on the intermediate shaft through splines; the output part comprises an output shaft which is connected with an output gear on the output shaft through a spline; the gear shifting mechanism has the advantages of simple structure, convenience in gear shifting, adaptation to complex environments, cross power sections, high working efficiency, small output band row and the like.
Description
Technical Field
The utility model relates to a PTO gearbox for crawler tractor, mainly used crawler tractor's PTO output belongs to power take off technical field.
Background
In the existing transmission system of the crawler tractor, the output and gear shifting of the PTO are mainly realized by the following two modes.
the first mode is the independent gearbox of development, but generally adopts the shift fork structure gear shift, and this kind of mode drives the tooth cover through the shift fork and slides, realizes that the gear switches, and it shifts and wastes time and energy to the cooperation that needs wet clutch just can realize shifting.
The second way is to integrate a PTO output port in the gearbox. Because of the size requirement of the gearbox, the output of the general PTO only has one rotating speed, and the rotating speed requirement of the crawler tractor in a working state cannot be met.
Disclosure of Invention
An object of the utility model is to overcome the not enough of prior art existence, and it is convenient to provide a gear shift, and transmission efficiency is high, strides the power section, and the belt row moment of torsion is little, is fit for the gearbox of crawler tractor PTO output.
the utility model aims at completing the technical proposal that the PTO gearbox for the crawler tractor comprises a box body part, an input shaft part, an intermediate shaft part, an output shaft part and a control valve part; the input shaft part comprises an input shaft, a clutch seat is connected with the input shaft through a flat key, a first-gear clutch and a second-gear clutch are respectively arranged on the left side and the right side of the input shaft, and a first-gear input gear and a second-gear input gear are respectively arranged on the outer sides of the first-gear clutch and the second-gear clutch; the intermediate shaft component comprises an intermediate shaft which is connected with a first-gear intermediate gear, a second-gear intermediate gear and an output intermediate gear on the intermediate shaft through splines; the output shaft part comprises an output shaft which is connected with an output gear on the output shaft through a spline.
Preferably, the method comprises the following steps: the control valve component comprises a control valve and a control valve plate so as to control the first-gear clutch and the second-gear clutch to realize PTO power output and rotation speed change; the output shaft is fixed with the dust cover and the output spline shaft through bolts;
the first-gear input gear is meshed with the first-gear intermediate gear, the second-gear input gear is meshed with the second-gear intermediate gear, and the output intermediate gear is meshed with the output gear; the first gear clutch and the second gear clutch are wet multi-plate friction clutches and are combined and separated through a control valve;
The input shaft, the intermediate shaft and the output shaft are respectively supported on the box body through bearings.
The utility model has the advantages of simple structure has, the gear shift is convenient, adapts to the complex environment, strides the power section, and work efficiency is high, and the output area is arranged for a short time. The electro-hydraulic control valve is used for controlling the combination and the disengagement of the wet clutch to realize the gear shifting control of the gearbox, so that the gearbox is simple and efficient; the dustproof cover is added at the output part, so that impurities can be effectively reduced from entering the interior of the gearbox, and the gearbox can adapt to a complex environment; the design of two gears greatly increases the working efficiency of the crawler tractor.
drawings
Fig. 1 is a schematic structural diagram of the present invention.
Detailed Description
The present invention will be described in detail with reference to the accompanying drawings: as shown in fig. 1, the PTO gearbox for the crawler tractor according to the present invention is composed of a casing member i, an input shaft member iii, an intermediate shaft member ii, an output shaft member iv and a control valve member v, all of which are mounted on a casing 17; the input shaft part III comprises an input shaft 1, a clutch seat 12 is connected with the input shaft 1 through a flat key, a first-gear clutch 3 and a second-gear clutch 4 are respectively arranged on the left side and the right side of the input shaft, and a first-gear input gear 2 and a second-gear input gear 5 are respectively arranged on the outer sides of the first-gear clutch 3 and the second-gear clutch 4; the intermediate shaft part II comprises an intermediate shaft 6, and the intermediate shaft 6 is respectively connected with a first-gear intermediate gear 7, a second-gear intermediate gear 8 and an output intermediate gear 9 on the intermediate shaft through splines; the output shaft part IV comprises an output shaft 11, and the output shaft 11 is connected with an output gear 10 on the output shaft 11 through a spline.
The control valve component V comprises a control valve 15 and a control valve plate 16, so as to control the first-gear clutch 3 and the second-gear clutch 4 to realize PTO power output and rotation speed change; the output shaft 11 is fixed with a dust cover 13 and an output spline shaft 14 through bolts;
The first-gear input gear 2 is meshed with the first-gear intermediate gear 7, the second-gear input gear 5 is meshed with the second-gear intermediate gear 8, and the output intermediate gear 9 is meshed with the output gear 10; the first gear clutch 3 and the second gear clutch 4 are wet type multi-plate friction clutches and are combined and separated through a control valve 15;
The input shaft 1, the intermediate shaft 6 and the output shaft 11 are respectively supported on the box body through bearings.
example (b): as shown in fig. 1, in the PTO transmission of the present invention, an input shaft 1 is coupled to an engine via a universal joint. In the PTO gearbox, the output spline shaft 14 is connected to the output device by a spline.
the control valve component V controls the connection and disconnection of the first-gear clutch 3 and the second-gear clutch 4 through hydraulic oil.
The working principle of the invention is as follows:
In the first operating mode, the control valve 15 controls the engagement of the first clutch 3, and power is input to the input shaft 1 → the clutch seat 12 → the first clutch 3 → the first input gear 2 → the first intermediate gear 7 → the intermediate shaft 6 → the output intermediate gear 9 → the output gear 10 → the output shaft 11 → the output spline shaft 14 → the output device.
In the second operating mode, the control valve 15 controls the engagement of the second clutch 4, and power is input to the input shaft 1 → the clutch seat 12 → the second clutch 4 → the second input gear 5 → the second intermediate gear 8 → the intermediate shaft 6 → the output intermediate gear 9 → the output gear 10 → the output shaft 11 → the output spline shaft 14 → the output device.
Claims (2)
1. A PTO gearbox for a crawler tractor comprises a box body part (I), an input shaft part (III), an intermediate shaft part (II), an output shaft part (IV) and a control valve part (V); the input shaft part (III) comprises an input shaft (1), characterized in that: a clutch seat (12) is connected with the input shaft (1) through a flat key, the left side and the right side of the clutch seat are respectively provided with a first-gear clutch (3) and a second-gear clutch (4), and a first-gear input gear (2) and a second-gear input gear (5) are respectively arranged on the outer sides of the first-gear clutch (3) and the second-gear clutch (4); the middle shaft part (II) comprises a middle shaft (6), and the middle shaft (6) is respectively connected with a first-gear middle gear (7), a second-gear middle gear (8) and an output middle gear (9) on the middle shaft through splines; the output shaft part (IV) comprises an output shaft (11), and the output shaft (11) is connected with an output gear (10) on the output shaft (11) through a spline.
2. The PTO gearbox for a track tractor according to claim 1, wherein the control valve means (v) comprises a control valve (15) and a control valve plate (16) to control the first gear clutch (3) and the second gear clutch (4) to achieve PTO power take off and speed change; the output shaft (11) is fixed with a dust cover (13) and an output spline shaft (14) through bolts;
The first-gear input gear (2) is meshed with the first-gear intermediate gear (7), the second-gear input gear (5) is meshed with the second-gear intermediate gear (8), and the output intermediate gear (9) is meshed with the output gear (10); the first gear clutch (3) and the second gear clutch (4) are wet multi-plate friction clutches and are combined and separated through a control valve (15);
The input shaft (1), the intermediate shaft (6) and the output shaft (11) are supported on the box body through bearings respectively.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201822134612.6U CN209743563U (en) | 2018-12-18 | 2018-12-18 | PTO gearbox for crawler tractor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201822134612.6U CN209743563U (en) | 2018-12-18 | 2018-12-18 | PTO gearbox for crawler tractor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN209743563U true CN209743563U (en) | 2019-12-06 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201822134612.6U Active CN209743563U (en) | 2018-12-18 | 2018-12-18 | PTO gearbox for crawler tractor |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN209743563U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115059738A (en) * | 2022-04-25 | 2022-09-16 | 湖南农业大学 | Double-source power transmission system of tractor and gear shifting method thereof |
-
2018
- 2018-12-18 CN CN201822134612.6U patent/CN209743563U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115059738A (en) * | 2022-04-25 | 2022-09-16 | 湖南农业大学 | Double-source power transmission system of tractor and gear shifting method thereof |
| CN115059738B (en) * | 2022-04-25 | 2025-02-11 | 湖南农业大学 | A tractor dual-source power transmission system and a gear shifting method thereof |
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