CN217381465U

CN217381465U - Clutch and gearbox for agricultural machine

Info

Publication number: CN217381465U
Application number: CN202221587048.3U
Authority: CN
Inventors: 尉玉英
Original assignee: Hebei Gelong Machinery Co ltd
Current assignee: Hebei Gelong Machinery Co ltd
Priority date: 2022-06-23
Filing date: 2022-06-23
Publication date: 2022-09-06
Anticipated expiration: 2032-06-23

Abstract

The utility model discloses a clutch and gearbox for agricultural machine belongs to agricultural machine technical field, and this clutch includes interior rotating member and the outer rotating member of cover on the interior rotating member, seted up at least one notch on the interior rotating member, be provided with the contrary key that ends in the notch, the first end of contrary key that ends supports and leans on in the notch, be provided with the elastic component that is used for restoring to the throne the contrary key that ends between the inboard of the second end of contrary key and the interior rotating member; and a plurality of ratchet grooves matched with the outer sides of the second ends of the non-return keys are formed in the inner wall of the outer rotating piece. The gearbox adopts the clutch. The utility model discloses reduce the oil consumption, energy-concerving and environment-protective has reduced manufacturing cost.

Description

Clutch and gearbox for agricultural machine

Technical Field

The utility model belongs to the technical field of agricultural machine, especially, relate to a clutch and gearbox for agricultural machine.

Background

The tractor plays a very important role in agricultural mechanized operation, is a power locomotive and a traction locomotive, and is a power platform of mechanized operation machines. The tractor transfers the power output of the engine to the agricultural implement through a matched gearbox.

At present, in the farmland operation process of the existing tractor, when reaching the farmland, the tractor needs to lift machines and close power output; when the steering is finished and the vehicle is driven away from the ground, the machine tool needs to be lowered, and the power output is turned on again; in addition, during operation of the tractor, if an obstacle or an emergency situation is met in the advancing process of a farmland, the tractor needs to be braked. In the process, when the power output of the tractor is closed, the rotating speed of an output shaft of the existing gearbox is reduced to zero from the working rotating speed; when the power output of the tractor is turned on again, the rotating speed of the output shaft of the gearbox is increased to the working rotating speed from zero, so that the tractor needs to restart the machine tool when reaching the ground to turn or brake, the oil consumption is increased, and the production cost is increased.

Therefore, in the technical field of agricultural machinery, there is still a need for research and improvement on the gearbox for agricultural machinery, which is also a research focus and focus in the technical field of agricultural machinery at present, and is the starting point of the present invention.

SUMMERY OF THE UTILITY MODEL

Therefore, the utility model discloses the technical problem that solve is: the utility model provides a clutch and gearbox for agricultural machine to solve the tractor when the farmland operation, when arriving the ground and turning to or braking, need restart machines, cause the high technical problem of oil consumption.

On one hand, the utility model provides a clutch, including interior rotating member and the outer rotating member of cover-mounted on the interior rotating member, seted up at least one notch on the interior rotating member, be provided with the contrary key that ends in the notch, the first end of contrary key that ends supports against in the notch, be provided with the elastic component that is used for restoring to the throne the contrary key that ends between the interior side of the second end of contrary key and the interior rotating member; and a plurality of ratchet grooves matched with the outer sides of the second ends of the non-return keys are formed in the inner wall of the outer rotating piece.

As an improvement, the elastic element is a compression spring, the bottom wall of the notch is provided with an accommodating hole, and the axis of the accommodating hole is perpendicular to the bottom wall of the notch; one end of the compression spring is arranged in the accommodating hole, and the other end of the compression spring abuts against the inner side of the second end of the non-return key.

As a refinement, a plurality of said ratchet slots are arranged in an annular array about the axis of said outer rotating member; when the number of the notches is two or more, the two or more notches are arranged in an annular array around the axis of the inner rotary member.

On the other hand, the utility model provides a gearbox for agricultural machine, the power distribution box comprises a box body, rotate respectively on the box and install input shaft and first output shaft, the one end of input shaft is stretched out the box and should stretch out the end and be power input end, the other end of input shaft is located in the box and with connect through the gear drive transmission between the first output shaft, the at least one end of first output shaft is stretched out the box, first output shaft stretches out the tip of box is power output end, the input shaft or lie in on the first output shaft gear department is provided with the clutch, the clutch adopts above-mentioned clutch, interior rotating member does the input shaft or first output shaft, outer rotating member does corresponding gear in the gear drive.

As an improvement, the axes of the input shaft and the first output shaft are vertically arranged, the gear transmission mechanism is a bevel gear transmission mechanism, the bevel gear transmission mechanism comprises a driving bevel gear arranged on the input shaft and a first driven bevel gear arranged on the first output shaft, and the driving bevel gear is meshed with the first driven bevel gear.

As a further improvement, both ends of the first output shaft extend out of the box body.

As a further improvement, a second output shaft is rotatably mounted on the box body, one end of the second output shaft is located in the box body and is sleeved with a second driven bevel gear meshed with the first driven bevel gear, the other end of the second output shaft extends out of the box body, and the extending end is a power output end.

As a further improvement, the power output ends of the first output shaft and the second output shaft are both in a spline structure.

As a further improvement, the input shaft, the first output shaft and the second output shaft are rotatably mounted to the case through tapered roller bearings.

After the technical scheme is adopted, the beneficial effects of the utility model are that:

the utility model provides a clutch and gearbox for agricultural machine, because the first end of contrary key supports in the notch of interior rotating member, the second end can support under the effect of elastic component and support in the ratchet groove of outer rotating member, like this when interior rotating member rotates, the ratchet groove prevents contrary key action that ends, and the second end of contrary key stretches out the notch, and interior rotating member accessible contrary key drives outer rotating member and rotates to transmit power, the clutch is in the engaged state this moment; when the rotating speed of the inner rotating piece is reduced or stopped, the outer rotating piece continues to rotate under the action of inertia, the ratchet groove of the outer rotating piece compresses the elastic piece, and the second end of the non-return key is embedded into the notch, so that the outer rotating piece is separated from the inner rotating piece, the clutch is separated, and the outer rotating piece can continue to rotate; when the inner rotating part is an input shaft or a first output shaft of the gearbox and the outer rotating part is a corresponding gear in the gear transmission mechanism, power is transmitted to the first output shaft from the input shaft through the non-return key and the gear transmission mechanism when working, the working state is obtained when the output reaches the working rotating speed, and the clutch is in the joint state at the moment; when the rotating speed of the input shaft is reduced to be lower than the working rotating speed, the first output shaft can continue to rotate under the action of inertia, namely when the tractor reaches the ground or brakes and the power output is closed, the rotating speed of the input shaft is reduced until the input shaft does not rotate any more, at the moment, the clutch is disengaged, and the first output shaft can continue to rotate under the action of inertia; when the tractor finishes steering and drives away from the ground or continues to move in the field, the power output is turned on again, and the input shaft drives the first output shaft to output power; therefore, when the tractor reaches the ground to turn or brake, the machine does not need to be restarted, the oil consumption is reduced, and the production cost is reduced; meanwhile, the clutch is arranged inside the box body of the gearbox, so that lubricating oil in the box body can be utilized for lubrication, and the service life is prolonged.

Because the box is all stretched out at the both ends of the first output shaft of gearbox for the gearbox has two power take off ends, has made things convenient for the use.

Because still rotate on the box of gearbox and install the second output shaft, the one end of second output shaft is located the box and the cover is equipped with the driven bevel gear of second with the meshing of first driven bevel gear, and the other end of second output shaft stretches out the box and should stretch out the end and be power take off end for the gearbox has three power take off end, has further made things convenient for the use.

The power output ends of the first output shaft and the second output shaft of the gearbox are both in a spline structure; therefore, the power can be transmitted to the operation machine through the coupler, and the use is convenient.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below. It should be apparent that the drawings in the following description are merely exemplary, and that other embodiments can be derived from the drawings provided by those of ordinary skill in the art without inventive effort.

The structure, ratio, size and the like shown in the present specification are only used for matching with the content disclosed in the specification, so as to be known and read by people familiar with the technology, and are not used for limiting the limit conditions which can be implemented by the present invention, so that the present invention has no technical essential significance, and any structure modification, ratio relationship change or size adjustment should still fall within the range which can be covered by the technical content disclosed by the present invention without affecting the efficacy and the achievable purpose of the present invention.

Fig. 1 is a schematic structural diagram of a clutch according to a first embodiment of the present invention;

FIG. 2 is an enlarged schematic view of the check key of FIG. 1;

FIG. 3 is a schematic view of the structure of the outer rotating member of FIG. 1;

FIG. 4 is a schematic view of the inner rotary member of FIG. 1;

fig. 5 is a schematic structural view of a transmission for agricultural machinery provided in an embodiment of the present invention;

FIG. 6 is an enlarged cross-sectional view A-A of FIG. 5;

fig. 7 is a schematic structural view of a gearbox for agricultural machinery provided by a third embodiment of the present invention;

FIG. 8 is a cross-sectional view B-B of FIG. 7;

fig. 9 is a schematic structural view of a transmission for agricultural machinery according to a fourth embodiment of the present invention;

FIG. 10 is a cross-sectional view C-C of FIG. 9;

in the figure: 1. a box body; 2. an input shaft; 21. a power input; 3. a first output shaft; 31. a power output end; 4. a tapered roller bearing; 5. a tapered roller bearing; 6. a gear transmission mechanism; 61. a drive bevel gear; 62. a first driven bevel gear; 63. a second driven bevel gear; 7. a clutch; 71. an inner rotating member; 711. a notch; 712. an accommodation hole; 72. an outer rotating member; 721. a ratchet groove; 73. a non-return key; 74. a compression spring; 8. a second output shaft; 81. a power output end; 9. a tapered roller bearing.

Detailed Description

The present invention is described in terms of specific embodiments, and other advantages and benefits of the present invention will become apparent to those skilled in the art from the following disclosure. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

In the present specification, the terms "front", "rear", "left", "right", "inner", "outer" and "middle" are used for convenience of description, and are not intended to limit the scope of the present invention, and changes or adjustments of the relative relationship thereof may be made without substantial technical changes.

Example one

As shown in fig. 1 to 4 in common, a clutch 7 includes an inner rotary member 71 and an outer rotary member 72 fitted over the inner rotary member 71.

The inner rotating member 71 is provided with at least one notch 711, in this embodiment, the number of the notches 711 is four, certainly, the number of the notches 711 is not limited to four, and may be one, two, three, five, or other numbers, which can be selected by those skilled in the art according to actual needs and will not be described herein again; preferably, when the number of the notches 711 is two or more, the two or more notches 711 are arranged in an annular array around the axis of the inner rotary member 71.

A non-return key 73 is arranged in the notch 711, the first end of the non-return key 73 is abutted against the notch 711, and an elastic part for resetting the non-return key 73 is arranged between the inner side of the second end of the non-return key 73 and the inner rotating part 71; preferably, the elastic member is a compression spring 74, the bottom wall of the notch 711 is provided with a receiving hole 712, and the axis of the receiving hole 712 is perpendicular to the bottom wall of the notch 711; one end of the compression spring 74 is disposed in the accommodating hole 712, and the other end abuts against the inner side of the second end of the non-return key 73; of course, the elastic member may be other ways that can be realized by those skilled in the art, and will not be described herein.

A plurality of ratchet grooves 721 matched with the outer side of the second end of the non-return key 73 are formed in the inner wall of the outer rotating member 72, preferably, the plurality of ratchet grooves 721 are arranged in an annular array around the axis of the outer rotating member 72, in this embodiment, the number of the ratchet grooves 721 is twelve, certainly, the number of the ratchet grooves 721 is not limited to twelve, and may be other numbers, and those skilled in the art can select the number according to actual needs, and are not described herein again; in this embodiment, the ratchet slot 721 is preferably a right-angled slot wall, and of course, the ratchet slot 721 may have other shapes that can be realized by those skilled in the art, and will not be described herein.

Because the first end of the non-return key 73 abuts against the notch 711 of the inner rotating element 71 and the second end can abut against the ratchet groove 721 of the outer rotating element 72 under the action of the compression spring 74, when the inner rotating element 71 rotates (the inner rotating element 71 rotates counterclockwise in fig. 1), the ratchet groove 721 prevents the non-return key 73 from acting, the second end of the non-return key 73 extends out of the notch 711, the inner rotating element 71 can drive the outer rotating element 72 to rotate through the non-return key 73, so as to transmit power, and the clutch is in an engaged state at this time; when the rotation speed of the inner rotary member 71 is reduced or stopped, the outer rotary member 72 continues to rotate by inertia, the ratchet grooves 721 of the outer rotary member 72 compress the compression springs 74, and the second ends of the check keys 73 are fitted into the notches 711, so that the outer rotary member 72 is disengaged from the inner rotary member 71, thereby disengaging the clutch and allowing the outer rotary member 72 to continue to rotate.

Example two

As shown in fig. 5 and fig. 6, the gearbox for agricultural machinery comprises a box body 1, wherein an input shaft 2 and a first output shaft 3 are respectively rotatably mounted on the box body 1, preferably, the input shaft 2 is rotatably mounted on the box body 1 through a tapered roller bearing 4, and the first output shaft 3 is rotatably mounted on the box body 1 through a tapered roller bearing 5; the one end of input shaft 2 stretches out box 1 and should stretch out the end and be power input 21, the other end of input shaft 2 is located in box 1 and is connected through gear drive 6 transmission between the first output shaft 3, box 1 is stretched out to at least one end of first output shaft 3, in this embodiment, for convenient use, box 1 is all stretched out at the both ends of first output shaft 3, the tip that first output shaft 3 stretches out box 1 is power output 31, it is provided with the clutch to lie in gear drive 6 department on the input shaft 2, the clutch that embodiment one provided is adopted to the clutch, combine fig. 1 and fig. 6, interior rotating member 71 is input shaft 2, outer rotating member 72 is the driving gear in the gear drive.

The utility model discloses in a concrete implementation of embodiment, the axis of input shaft 2 and first output shaft 3 sets up perpendicularly, and above-mentioned gear drive 6 is bevel gear drive, and bevel gear drive is including locating drive bevel gear 61 on input shaft 2 and locating first driven bevel gear 62 on first output shaft 3, and drive bevel gear 61 and first driven bevel gear 62 mesh.

It should be noted that the structure of the gear transmission mechanism 6 is not limited to the bevel gear transmission mechanism, and a straight gear transmission mechanism may also be adopted, and those skilled in the art may select the gear transmission mechanism according to actual needs, and details are not described herein.

The utility model discloses in the embodiment of a concrete implementation mode, for convenient being connected with the operation machines, the last power take off end 31 of first output shaft 3 is spline structure, can pass through the shaft coupling (not shown in the figure) with power like this and transmit for the operation machines, has made things convenient for the use.

The working principle is as follows:

the power is transmitted to the first output shaft 3 from the input shaft 2 through the non-return key 73 and the gear transmission mechanism 6, the output reaches the working rotation speed, namely the working state, and the clutch is in the joint state at the moment; when the rotating speed of the input shaft 2 is reduced to be lower than the working rotating speed, the first output shaft 3 can continue to rotate under the inertia effect, namely when the tractor reaches the ground or brakes and the power output is closed, the rotating speed of the input shaft 2 is reduced until the input shaft 2 does not rotate any more, at the moment, the clutch is disengaged, and the first output shaft 3 can continue to rotate under the inertia effect; when the tractor finishes steering and drives away from the ground or continues to move in the field, the power output is turned on again, the input shaft 2 drives the first output shaft 3 to output power, so that when the tractor turns or brakes at the ground, the machine does not need to be restarted, the oil consumption is reduced, and the production cost is reduced; meanwhile, as the clutch is arranged inside the box body 1, lubricating oil in the box body 1 can be utilized for lubrication, and the service life is prolonged.

EXAMPLE III

This embodiment is substantially the same as the second embodiment, except that, as shown in fig. 7 and 8, a clutch is provided on the first output shaft 3 at the gear transmission mechanism 6, and in combination with fig. 1 and 8, the inner rotating member 71 is the first output shaft 3, and the outer rotating member 72 is a driven gear in the gear transmission mechanism.

Example four

The present embodiment is substantially the same as the second embodiment, except that, as shown in fig. 9 and fig. 10, a second output shaft 8 is further rotatably mounted on the box body 1, preferably, the second output shaft 8 is rotatably mounted on the box body 1 through a tapered roller bearing 9, one end of the second output shaft 8 is located in the box body 1 and is sleeved with a second driven bevel gear 63 engaged with the first driven bevel gear 62, the other end of the second output shaft 8 extends out of the box body 1, and the extending end is a power output end 81, so that the transmission has three power output ends, which further facilitates use.

The utility model discloses in the embodiment of a concrete implementation mode, for the convenience be connected with the operation machines, the last power take off part 81 of second output shaft 8 also is spline structure, can transmit power for the operation machines through the shaft coupling like this, has made things convenient for the use.

The inner rotor 71 in the clutch is not limited to a rotary shaft, and may be a rotary ring having an inner hole.

To sum up, the clutch and the gearbox for the agricultural machine provided by the utility model reduce oil consumption, save energy and protect environment, and reduce production cost; the gearbox is provided with a plurality of power output ends, so that the use is convenient; meanwhile, as the clutch is arranged inside the box body of the transmission, the lubricating oil in the box body can be utilized for lubrication, and the service life is prolonged.

Although the invention has been described in detail with respect to the general description and the specific embodiments, it will be apparent to those skilled in the art that modifications and improvements can be made based on the invention. Accordingly, such modifications and improvements are intended to be within the scope of this invention without departing from the spirit thereof.

Claims

1. A clutch is characterized by comprising an inner rotating piece and an outer rotating piece sleeved on the inner rotating piece, wherein at least one notch is formed in the inner rotating piece, a non-return key is arranged in the notch, a first end of the non-return key abuts against the notch, and an elastic piece used for resetting the non-return key is arranged between the inner side of a second end of the non-return key and the inner rotating piece; and a plurality of ratchet grooves matched with the outer sides of the second ends of the non-return keys are formed in the inner wall of the outer rotating piece.

2. The clutch according to claim 1, wherein the elastic member is a compression spring, a receiving hole is formed in the bottom wall of the notch, and the axis of the receiving hole is perpendicular to the bottom wall of the notch; one end of the compression spring is arranged in the accommodating hole, and the other end of the compression spring abuts against the inner side of the second end of the non-return key.

3. The clutch of claim 1, wherein a plurality of said ratchet slots are arranged in an annular array about an axis of said outer rotating member; when the number of the notches is two or more, the two or more notches are arranged in an annular array around the axis of the inner rotary member.

4. The utility model provides a gearbox for agricultural machine, includes the box, its characterized in that, rotate respectively on the box and install input shaft and first output shaft, the one end of input shaft stretches out the box and should stretch out the end and be power input end, the other end of input shaft be located in the box and with through gear drive transmission between the first output shaft transmission connection, at least one end of first output shaft stretches out the box, the first output shaft stretches out the tip of box is power output end, input shaft or lie in on the first output shaft gear drive transmission department is provided with the clutch, the clutch adopt according to any one of claims 1 to 3 the clutch, interior rotation piece is the input shaft or first output shaft, outer rotation piece is corresponding gear in the gear drive.

5. The gearbox of claim 4, wherein the axes of the input shaft and the first output shaft are arranged vertically, the gear transmission mechanism is a bevel gear transmission mechanism, the bevel gear transmission mechanism comprises a driving bevel gear arranged on the input shaft and a first driven bevel gear arranged on the first output shaft, and the driving bevel gear is engaged with the first driven bevel gear.

6. A gearbox for agricultural machinery according to claim 5, wherein both ends of said first output shaft protrude from said casing.

7. The gearbox for agricultural machinery according to claim 5 or 6, wherein a second output shaft is further rotatably mounted on the box body, one end of the second output shaft is located in the box body and sleeved with a second driven bevel gear meshed with the first driven bevel gear, the other end of the second output shaft extends out of the box body, and the extending end is a power output end.

8. A gearbox for agricultural machinery according to claim 7, wherein the power take-off ends on the first output shaft and the second output shaft are both in a spline structure.

9. An agricultural machine gearbox according to claim 7, wherein said input shaft, said first output shaft and said second output shaft are rotatably mounted to said housing by tapered roller bearings.