CN112747098B

CN112747098B - Transmission structure of gearbox of agricultural transporter

Info

Publication number: CN112747098B
Application number: CN202110090235.4A
Authority: CN
Inventors: 李显; 董斌; 崔江; 张都兵; 杨飞
Original assignee: Chongqing Dile Jinchi General Machinery Co ltd
Current assignee: Chongqing Dile Jinchi General Machinery Co ltd
Priority date: 2021-01-22
Filing date: 2021-01-22
Publication date: 2022-06-21
Anticipated expiration: 2041-01-22
Also published as: CN112747098A

Abstract

The invention discloses a transmission structure of an agricultural carrier gearbox, which comprises a first main shaft arranged in a second box body, wherein one end of the first main shaft is supported in a first central hole through a bearing, the second main shaft is connected with an input shaft of a hydraulic stepless speed changer outside the second box body, an output shaft of the hydraulic stepless speed changer is connected with a second auxiliary shaft, one end of a first auxiliary shaft is supported in a second central hole of the second auxiliary shaft through a bearing, a first gear driving gear is arranged on the first main shaft, and the first gear driving gear can be meshed with a first gear driven gear arranged on the first auxiliary shaft. The invention can change the speed according to the actual use condition of the agricultural carrying machinery, thereby improving the transfer requirement and efficiency.

Description

Transmission structure of gearbox of agricultural transporter

Technical Field

The invention relates to a transmission structure, in particular to a transmission structure of a gearbox of an agricultural transporter.

Background

The labor amount for agricultural transportation accounts for 25% -50% of the total labor amount, so that the improvement of the transportation efficiency of the agricultural transportation machine has important significance for developing agricultural production and improving the agricultural labor productivity.

Agricultural carrier needs certain speed when carrying out agricultural materials or agricultural product short distance transportation in the country, and the gearbox of current agricultural carrier adopts the transmission structure that mechanical type kept off the position more, and the rotational speed of engine is very high but transport speed is slower when agricultural occasion operations such as farmland, orchard, leads to transporting the demand not enough, and is inefficient.

Therefore, the technical personnel in the field are dedicated to develop a transmission structure of the gearbox of the agricultural carrying machine, the speed is changed according to the actual use condition of the agricultural carrying machine, and the transferring requirement and efficiency are improved.

Disclosure of Invention

In view of the above-mentioned defects in the prior art, the technical problem to be solved by the present invention is to provide a transmission structure of a gearbox of an agricultural carrying machine, which can change the speed according to the actual use condition of the agricultural carrying machine, and improve the transportation demand and efficiency.

In order to achieve the purpose, the invention provides a transmission structure of an agricultural carrier gearbox, which comprises a first main shaft arranged in a second box body, wherein one end of the first main shaft is supported in a first central hole through a bearing, the second main shaft is connected with an input shaft of a hydraulic stepless speed changer outside the second box body, an output shaft of the hydraulic stepless speed changer is connected with a second auxiliary shaft, one end of a first auxiliary shaft is supported in a second central hole of the second auxiliary shaft through a bearing, a first gear driving gear is arranged on the first main shaft, and the first gear driving gear can be meshed with a first gear driven gear arranged on the first auxiliary shaft.

Through the meshing transmission of main shaft and other parts, mechanical variable speed and hydraulic pressure infinitely variable speed are realized to the gearbox, improve and transport the demand, better use operating mode who is applicable to agricultural machinery transport machinery.

Furthermore, a second-gear driving gear, a second-gear synchronizer and an input synchronizer are installed on the first main shaft, and a second-gear driven gear, a reduction gear and an output synchronizer are installed on the first auxiliary shaft.

A driving gear arranged on the first main shaft is meshed with a driven gear arranged on the first auxiliary shaft to realize two-stage speed change, so that various speed changes are realized, and the novel gear box is further suitable for use environments.

Furthermore, a first shifting fork shaft is installed in the second box body, a first shifting fork is installed on the first shifting fork shaft, the end portion of the first shifting fork is located in the first and second gear synchronizer ring groove, a first synchronizing tooth is arranged on the first gear driving gear, and a fourth synchronizing tooth is arranged on the second gear driving gear. Mechanical speed change is realized through the meshing of each synchronous tooth and the driving tooth.

Further, install the second shifting fork axle in the second box, install second shift fork and third shift fork on the second shifting fork axle, second shift fork tip is located output synchronizer ring inslot, the third shift fork tip is located input synchronizer ring inslot, the input synchronizer can with the meshing of the last synchronous tooth of third of second main shaft, the output synchronizer can with the meshing of the last synchronous tooth of the second of countershaft.

Further, the reduction gear may be engaged with a final stage gear mounted on the transmission output shaft.

Furthermore, a first box body is installed on the side wall of the second box body, a power take-off output shaft is installed on the first main shaft, the power take-off output shaft is supported in the first box body and the second box body through bearings and is parallel to the first main shaft, and a power take-off driving gear installed on the first main shaft can be meshed with a power take-off driven gear installed on the power take-off output shaft.

Furthermore, the power take-off output shaft is also connected with the power output end of the hydraulic pump. The power of the power device is transmitted to the hydraulic pump through the power take-off output shaft, the power device of the hydraulic pump does not need to be additionally installed, and the overall size of the conveyor is reduced.

Furthermore, the first main shaft, the second main shaft, the first auxiliary shaft and the second auxiliary shaft are all supported in the first box body and the second box body through bearings or bearing bushes, and friction force of the shafts is reduced.

Furthermore, the second box body is located a first oil plug is installed at the end part of the power take-off output shaft, and the first box body is located a second oil plug is installed at the end part of the second auxiliary shaft. The oil plug prevents the lubricating oil in the gearbox from leaking, and the lubricating efficiency of the lubricating oil in the gearbox is improved.

Furthermore, the end part of the second main shaft is provided with an external spline, the external spline is connected with a spline sleeve in a matching way, the spline sleeve is connected with the input shaft of the hydraulic continuously variable transmission, and the hydraulic continuously variable transmission is connected with the second auxiliary shaft through an internal spline.

The invention has the beneficial effects that: the main shaft and the auxiliary shaft are connected through mechanical meshing transmission or a hydraulic stepless speed changer to form two kinds of transmission of hydraulic stepless speed change and mechanical speed change, and the requirements of different working conditions can be met no matter low-speed transmission or high-speed transmission is adopted; the gearbox is provided with independent power take-off interface and still installs the hydraulic pump, realizes a tractor serves several purposes, improves the utilization ratio of conveyer.

Drawings

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

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

Fig. 3 is a schematic sectional view of a-a in fig. 2.

Fig. 4 is a structural diagram illustrating an installation structure of a fork shaft and a fork according to an embodiment of the present invention.

Fig. 5 is a schematic structural view of a first gear driving gear according to an embodiment of the present invention.

Fig. 6 is a schematic structural diagram of a second gear driving gear according to an embodiment of the present invention.

Fig. 7 is a schematic structural diagram of a second spindle according to an embodiment of the present invention.

Fig. 8 is a schematic view of a second countershaft according to an embodiment of the present invention.

Detailed Description

The present invention will be further described with reference to the accompanying drawings and examples, wherein the terms "upper", "lower", "left", "right", "inner", "outer", and the like, as used herein, refer to an orientation or positional relationship indicated in the drawings, which is for convenience and simplicity of description, and does not indicate or imply that the referenced devices or components must be in a particular orientation, constructed and operated in a particular manner, and thus should not be construed as limiting the present invention. The terms "first," "second," "third," and the like are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.

In the description of the present invention, it should be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "in communication" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.

As shown in fig. 1 to 8, a transmission structure of a gearbox of an agricultural transporter comprises a first main shaft 9 installed in a second box 2, wherein a first gear driving gear 8, a second gear driving gear 26, a first gear synchronizer 7, an input synchronizer 23 and a power take-off output shaft 4 are installed on the first main shaft 9.

One end of the first main shaft 9 is supported in the first central hole 24-3 through a bearing, the second main shaft 24 is connected with an input shaft of a hydraulic stepless speed changer 29 outside the second box body 2, in the embodiment, an external spline 24-2 is arranged at the end part of the second main shaft 24, the external spline 24-2 is connected with a spline housing 25 in a matching mode, and the spline housing 25 is connected with the input shaft of the hydraulic stepless speed changer 29.

An output shaft of the hydraulic continuously variable transmission 29 is connected with the second sub-shaft 19, and specifically, the hydraulic continuously variable transmission 29 is connected with the second sub-shaft 19 through an internal spline 19-2. One end of the first countershaft 12 is supported by a bearing in the second center hole 19-3 of the second countershaft 19, and the first gear drive gear 8 can be meshed with the first gear driven gear 11 mounted on the first countershaft 12 to realize the first gear shift.

The first counter shaft 12 is provided with a secondary driven gear 17, a reduction gear 16 and an output synchronizer 18, and the reduction gear 16 can be meshed with a final gear 14 arranged on a transmission output shaft 15, so that the power is output after being changed in speed by the transmission.

The end part of a power take-off output shaft 4 on the second box body 2 and positioned on the first main shaft 9 is provided with a first oil plug 5, the power take-off output shaft 4 is supported in the first box body 1 and the second box body 2 through a bearing and is parallel to the first main shaft 9, and a power take-off driving gear 10 arranged on the first main shaft 9 can be meshed with a power take-off driven gear 3 arranged on the power take-off output shaft 4. The power take-off output shaft 4 is also connected with the power output end of the hydraulic pump 30, so that the power generated by the power device is transmitted to the hydraulic pump 30 through the power take-off output shaft 4, and the hydraulic pump 30 is used for providing power for other accessory equipment of the conveyor.

A first shifting fork shaft 27 is installed in the second box body 2, a first shifting fork 6 is installed on the first shifting fork shaft 27, the end portion of the first shifting fork 6 is located in an annular groove of a first-gear synchronizer 7, a first synchronizing tooth 8-1 is arranged on the first-gear driving gear 8, and a fourth synchronizing tooth 26-1 is arranged on the second-gear driving gear 26. In the specific mechanical speed regulation, the first shifting fork 6 pushes the first and second gear synchronizer 7 to be meshed with the first synchronizing tooth 8-1 on the first gear driving gear 8, or the first shifting fork 6 pushes the first and second gear synchronizer 7 to be meshed with the fourth synchronizing tooth 26-1 on the second gear driving gear 26, so that the mechanical first gear or second gear regulation is realized.

The first box 1 is installed to the second box 2 lateral wall, and first main shaft 9, second main shaft 24, first countershaft 12 and second countershaft 19 all support in first box 1 and second box 2 through bearing, axle sleeve or axle bush, and first box 1 just is located second countershaft 19 tip and installs second oil plug 20, prevents that the interior lubricating oil of gearbox from leaking.

A second shifting fork shaft 28 is further installed in the second box body 2, a second shifting fork 21 and a third shifting fork 22 are installed on the second shifting fork shaft 28, and end portions of the second shifting fork 21 and the third shifting fork 22 face different directions. The end of the second shifting fork 21 is positioned in the annular groove of the output synchronizer 18, the end of the third shifting fork 22 is positioned in the annular groove of the input synchronizer 23, the input synchronizer 23 can be meshed with a third synchronizing tooth 24-1 on the second main shaft 24, and the output synchronizer 18 can be meshed with a second synchronizing tooth 19-1 on the second auxiliary shaft 19. In the specific speed regulation, the second shifting fork shaft 28 drives the second shifting fork 21 and the third shifting fork 22 to simultaneously push the input synchronizer 23 and the output synchronizer 18 to be respectively meshed with the third synchronizing tooth 24-1 on the second main shaft 24 and the second synchronizing tooth 19-1 on the second auxiliary shaft 19, the second auxiliary shaft 19 transmits power to the first auxiliary shaft 12, and the first auxiliary shaft 19 transmits the power to the power transmission shaft 15, so that the power transmission is realized.

The working principle of gear shifting and power transmission of the invention is as follows:

1) the power device drives the first main shaft (9) to rotate through a clutch (not shown in the figure), a power take-off driving gear 10 on the first main shaft 9 drives a driven gear 3 and a power take-off output shaft 4 to rotate through gear meshing, and the power take-off output shaft 4 drives a hydraulic pump 30 to work.

2) When the gearbox body is in a neutral gear state, power input is cut off through a clutch (not shown in the figure), the first shifting fork shaft 27 drives the first shifting fork 6 to push the first synchronous gear 8-1 on the first gear driving gear 8 to be meshed with the second gear synchronizer 7, after the clutch is engaged, the second gear synchronizer 7 drives the first gear driving gear 8 to rotate, and according to the gear meshing transmission relation, the power output shaft 15 obtains a forward rotation output rotating speed R1 at the moment.

3) When the transmission case is in a neutral state, the power input is cut off by a clutch (not shown), and the first fork 6 is driven by the first fork shaft 27 to push the first second synchronizer 7 to mesh with the fourth synchronizing tooth 26-1 on the second driving gear 26. After the clutch is engaged, the two-gear synchronizer 7 drives the two-gear driving gear 26 to rotate, and according to the gear meshing transmission relation, the power output shaft 15 obtains the forward rotation output rotating speed R2 at the moment.

4) When the gearbox body is in a neutral gear state, the power input is cut off through a clutch (not shown in the figure), the second shifting fork 21 and the third shifting fork 22 are driven through the second shifting fork shaft 28, and the input synchronizer 23 and the output synchronizer 18 are simultaneously pushed to be meshed with the third synchronous teeth 24-1 on the second main shaft 24 and the second synchronous teeth 19-1 on the second auxiliary shaft 19 respectively. After the clutch is engaged, the power drives the second main shaft 24 to rotate through the first main shaft 9 and the input synchronizer 23, so that the hydraulic stepless speed changer 29 is driven to work, and the power output by the external spline shaft of the hydraulic stepless speed changer 29 drives the first auxiliary shaft 12 to rotate through the second auxiliary shaft 19 and the output synchronizer 18. Depending on the operating characteristics of the hydraulic continuously variable transmission 29 and the gear engagement relationship, the power take-off shaft 15 now attains either the forward output speed range R3 or the reverse (reverse) output speed range R4.

When the hydraulic stepless speed change function is used, the hydraulic stepless speed change function can be used when the transporter starts or has larger transmission torque when the transporter is used for transporting agricultural materials or agricultural products in a short distance, better application working conditions are achieved, and abrasion to mechanical gears is reduced. When the starting of the conveyor is completed or the transmission torque is small, the conveyor is switched to a mechanical gear to work, and the service life of the hydraulic stepless speed change function is prolonged. In addition, the invention is also provided with an independent power take-off output interface, which can be used for carrying out corresponding operation on corresponding additional machines and tools, thereby realizing multiple functions of one machine.

The foregoing detailed description of the preferred embodiments of the invention has been presented. It should be understood that numerous modifications and variations could be devised by those skilled in the art in light of the present teachings without departing from the inventive concepts. Therefore, the technical solutions available to those skilled in the art through logic analysis, reasoning and limited experiments based on the prior art according to the concept of the present invention should be within the scope of protection defined by the claims.

Claims

1. A transmission structure of an agricultural carrier gearbox is characterized in that: the hydraulic stepless speed changer comprises a first main shaft (9) arranged in a second box body (2), wherein one end of the first main shaft (9) is supported in a first center hole (24-3) of the second main shaft (24) through a bearing, the second main shaft (24) is connected with an input shaft of a hydraulic stepless speed changer (29) outside the second box body (2), an output shaft of the hydraulic stepless speed changer (29) is connected with a second auxiliary shaft (19), and one end of a first auxiliary shaft (12) is supported in a second center hole (19-3) of the second auxiliary shaft (19) through a bearing;

a first-gear driving gear (8) is mounted on the first main shaft (9), and the first-gear driving gear (8) can be meshed with a first-gear driven gear (11) mounted on the first auxiliary shaft (12);

a second-gear driving gear (26), a second-gear synchronizer (7) and an input synchronizer (23) are mounted on the first main shaft (9);

a secondary driven gear (17), a reduction gear (16) and an output synchronizer (18) are arranged on the first auxiliary shaft (12);

the input synchronizer (23) can be engaged with a third synchronization tooth (24-1) on the second primary shaft (24), and the output synchronizer (18) can be engaged with a second synchronization tooth (19-1) on the second secondary shaft (19).

2. The transmission structure of a gearbox for an agricultural carrier as set forth in claim 1, wherein: a first shifting fork shaft (27) is installed in the second box body (2), a first shifting fork (6) is installed on the first shifting fork shaft (27), and the end part of the first shifting fork (6) is located in a ring groove of the first-gear synchronizer (7);

a first synchronous tooth (8-1) is arranged on the first gear driving gear (8), and a fourth synchronous tooth (26-1) is arranged on the second gear driving gear (26).

3. The transmission structure of a gearbox for an agricultural carrier as set forth in claim 2, wherein: install second shift fork axle (28) in second box (2), install second shift fork (21) and third shift fork (22) on second shift fork axle (28), second shift fork (21) tip is located in output synchronizer (18) annular, third shift fork (22) tip is located in input synchronizer (23) annular.

4. The transmission structure of a gearbox for an agricultural handler according to claim 3, wherein: the reduction gear (16) can mesh with a final gear (14) mounted on a transmission output shaft (15).

5. The transmission structure of a gearbox for an agricultural handler according to claim 4, wherein: a first box body (1) is installed on the side wall of the second box body (2), a power take-off output shaft (4) is installed on the first main shaft (9), and the power take-off output shaft (4) is supported in the first box body (1) and the second box body (2) through bearings and is parallel to the first main shaft (9);

and a power take-off driving gear (10) arranged on the first main shaft (9) can be meshed with a power take-off driven gear (3) arranged on the power take-off output shaft (4).

6. The transmission structure of a gearbox for an agricultural carrier as set forth in claim 5, wherein: the power take-off output shaft (4) is also connected with the power output end of the hydraulic pump (30).

7. The transmission structure of a gearbox for an agricultural carrier as set forth in claim 6, wherein: the first main shaft (9), the second main shaft (24), the first auxiliary shaft (12) and the second auxiliary shaft (19) are supported in the first box body (1) and the second box body (2) through bearings or bearing bushes.

8. The transmission structure of a gearbox for an agricultural carrier as set forth in claim 6, wherein: a first oil plug (5) is arranged at the end part of the power take-off output shaft (4) of the second box body (2);

and a second oil plug (20) is arranged at the end part of the second auxiliary shaft (19) of the first box body (1).

9. The transmission structure of a gearbox for an agricultural carrier as set forth in claim 7, wherein: the end part of the second main shaft (24) is provided with an external spline (24-2), the external spline (24-2) is connected with a spline sleeve (25) in a matching way, and the spline sleeve (25) is connected with an input shaft of the hydraulic stepless speed changer (29);

the hydraulic continuously variable transmission (29) is connected with the second auxiliary shaft (19) through an internal spline (19-2).