CN220286332U

CN220286332U - Agricultural machinery

Info

Publication number: CN220286332U
Application number: CN202321927157.XU
Authority: CN
Inventors: 占小华; 连玉兵; 胡斯强
Original assignee: Chongqing Zongshen General Power Machine Co Ltd
Current assignee: Chongqing Zongshen General Power Machine Co Ltd
Priority date: 2023-07-21
Filing date: 2023-07-21
Publication date: 2024-01-02
Anticipated expiration: 2033-07-21

Abstract

The utility model discloses an agricultural machine, which comprises a transmission mechanism for driving the agricultural machine to walk, a tensioning arm capable of swinging by the transmission mechanism and a tensioning wheel for connecting a driving wheel and a driven wheel in a transmission way through a transmission belt, wherein the tensioning wheel is arranged on the tensioning arm, and the tensioning arm comprises a plurality of driving wheels, a plurality of driven wheels, a plurality of tensioning wheels, a plurality of driving wheels and a plurality of driven wheels, wherein the driving wheels are arranged on the tensioning arm, the tensioning wheels are arranged on the tensioning arm, and are arranged on the tensioning arm through the driving wheels: the transmission mechanism further comprises limiting pieces used for limiting the transmission belt on the tensioning wheel, a plurality of limiting pieces are arranged on the tensioning arm in a non-detachable mode, and one limiting piece is located on one side, away from the driving wheel, of the tensioning wheel. The utility model can realize complete cutting of power, ensure normal and safe use of the agricultural machinery, and simplify the assembly process.

Description

Agricultural machinery

Technical Field

The utility model relates to an agricultural machine, in particular to a belt tensioning mechanism of the agricultural machine.

Background

Agricultural machinery has been widely used in agricultural production as a mechanical device to replace the conventional manual work between agriculture. In order to facilitate the operation of a user and ensure the safety of the user, the existing agricultural machinery needs to meet the requirement of stopping running and operation in time. Also, as disclosed in chinese patent document CN214036731U, a belt clutch and a small agricultural machine applying such a clutch, comprising: a driving wheel, a driven wheel and a transmission belt; the device also comprises a belt tensioning device and a belt limiting device; the belt limiting device is arranged between the driving wheel and the driven wheel; the belt limiting device is in contact with the transmission belt in a loose state, the belt is loosened when the tensioning wheel is far away from the belt, and the belt is rapidly reduced in movement speed until stopping by applying lifting force to the belt running at high speed through the clutch post. The buffer speed of the belt in the clutch opening and closing state is reduced, the sensitivity and response time of the clutch in the switching of the working state are improved, and the use safety and reliability of the transmission system are improved. This prior art has the following disadvantages: in the use process of the prior art, when the agricultural machinery needs to stop walking, the phenomenon that when the power output operation is cut off, the power is not completely cut off or the belt is not thoroughly separated from the main driven wheel, so that the agricultural machinery cannot stop walking or operation in time, safety accidents or abnormal abrasion of the belt are caused, and the use risk of mechanical equipment is increased.

Disclosure of Invention

The utility model provides an agricultural machine for solving the technical problem that the normal use of the agricultural machine is affected because the agricultural machine cannot be stopped in time in the use of the agricultural machine in the prior art, comprising a transmission mechanism for driving the agricultural machine, wherein the transmission mechanism comprises a swingable tensioning arm and a tensioning wheel for connecting a driving wheel with a driven wheel in a transmission way through a transmission belt, and the tensioning wheel is arranged on the tensioning arm, wherein the tensioning wheel comprises a first driving wheel, a second driving wheel, a third driving wheel, a fourth driving wheel, a fifth driving wheel, a sixth driving wheel and a fourth driving wheel, wherein the fourth driving wheel is arranged on the tensioning arm, the fifth driving wheel is arranged on the third driving wheel, and the fourth driving wheel is arranged on the fourth driving wheel, and the fourth driving wheel is arranged: the transmission mechanism further comprises limiting pieces used for limiting the transmission belt on the tensioning wheel, a plurality of limiting pieces are arranged on the tensioning arm in a non-detachable mode, and one limiting piece is located on one side, away from the driving wheel, of the tensioning wheel.

After analysis of the agricultural machinery in the prior art, it is found that when the power is stopped, the driving wheel still rotates, and the driving belt is not separated from contact with the driving wheel at the moment, so that the driving belt still can be driven to move under the rotation of the driving wheel, the driving belt still can be in a tensioning state, and then the driven wheel is driven to continue to rotate under the driving of the driving belt, so that the agricultural machinery still operates after the power is stopped. In this scheme, set up the locating part on the tensioning arm after, utilize the locating part to limit drive belt on the take-up pulley all the time, but also set up a locating part in the take-up pulley one side of keeping away from the action wheel, consequently, after the distal end set up the locating part, unnecessary length moves to the distal end when restricting the belt and loosen, restrict unnecessary length of drive belt to the action wheel position for the drive wheel position belt is crooked, and is disengaged with the action wheel, the belt can not continue rotating again, just can't drive the rotation from the driving wheel yet, just also realized cutting off completely of power, the safe handling of agricultural machinery has been guaranteed, and a structure is simple, simplifies assembly process simultaneously.

Preferably, the limiting piece is a limiting piece which is arranged at a distance from the surface of the tensioning wheel not greater than the thickness of the transmission belt. In the scheme, the minimum distance between the limiting piece and the surface of the tensioning wheel is smaller than the thickness of the driving belt, and through the arrangement, the driving belt is limited between the limiting piece and the tensioning wheel by the limiting piece, so that the driving belt is prevented from falling off from the tensioning wheel; meanwhile, the maximum distance between the limiting piece and the surface of the tensioning wheel is larger than the thickness of the driving belt, and the tensioning wheel and the driving belt are thoroughly separated.

Preferably, the surface of the tensioning wheel is provided with a clamping groove matched with the transmission belt, and the limiting piece is arranged in a way that the minimum distance between the limiting piece and the surface of the tensioning wheel is smaller than the thickness of the transmission belt. Therefore, in this scheme, utilize the cooperation of draw-in groove and locating part to realize the anticreep effect to driving belt, when take-up pulley tensioning driving belt, driving belt draws in the draw-in groove this moment, locating part and driving belt break away from the contact completely, just can not influence driving belt's motion yet, and when driving belt is in slackening, even driving belt breaks away from the draw-in groove, but because locating part and take-up pulley surface distance are less than driving belt's thickness, consequently under the spacing effect of locating part, driving belt's a part can be in the draw-in groove all the time, just can not appear driving belt and break away from the condition that takes-up pulley was gone up yet, simple structure.

Preferably, the surface of the limiting piece is provided with a boss matched with the transmission belt, and the limiting piece is arranged in a way that the minimum distance between the limiting piece and the surface of the tensioning wheel is smaller than the thickness of the transmission belt.

Preferably, the limiting member is a cylindrical rod.

Preferably, the outer edge of the limiting piece is sleeved with a bushing. In this scheme, the bush is rotatable setting, on the one hand can reduce the wearing and tearing of locating part to the belt, on the other hand, because after long-time use, the wearing and tearing can appear in the locating part, and the bush of overcoat then conveniently changes.

Preferably, the plurality of stoppers are uniformly spaced along the circumference of the tensioner.

Drawings

FIG. 1 is a schematic view (1) of a tension state of a transmission belt in an agricultural machine according to an embodiment of the present utility model;

FIG. 2 is a schematic view (2) of the tension of the transmission belt according to the first embodiment;

FIG. 3 is a schematic view (1) of a transmission belt in a slack state in the first embodiment;

FIG. 4 is a schematic view (2) of a transmission belt in a slack state according to the first embodiment;

fig. 5 is a schematic diagram of a tensioning state of a transmission belt in a second embodiment of an agricultural machine according to the present utility model.

Detailed Description

The following is a further detailed description of the embodiments:

reference numerals in the drawings of the specification include: the device comprises a driving wheel 1, a driven wheel 2, a tensioning wheel 3, a transmission belt 4, a limiting piece 5 and a bushing 51.

Example 1

Substantially as shown in figures 1 to 4 of the accompanying drawings: the agricultural machine comprises a transmission mechanism for driving the agricultural machine to walk, wherein the transmission mechanism comprises a tensioning arm capable of swinging and a tensioning wheel 3 arranged on the tensioning arm, the tensioning wheel 3 is in transmission connection with a driving wheel 1 and a driven wheel 2 through a transmission belt 4, when the tensioning arm swings towards the driving wheel 1 with the tensioning wheel 3, the tensioning wheel 3 drives the transmission belt 4 to cling to the driving wheel 1, and the transmission belt 4 is in a tensioning state; when the tensioning arm swings away from the driving wheel 1 with the tensioning wheel 3, the tensioning wheel 3 drives the driving belt 4 to separate from the driving wheel 1, and the driving belt 4 is in a loose state.

The drive mechanism further comprises a limiting piece 5 for limiting the drive belt 4 on the tensioning wheel 3, wherein the limiting piece 5 is not detachably arranged with the tensioning arm, one limiting piece 5 is located on one side, away from the driving wheel 1, of the tensioning wheel 3, and the limiting piece 5 and the tensioning arm are integrally formed.

The minimum distance of locating part 5 with the thickness of take-up pulley 3 surface is less than driving belt 4, and locating part 5 is the cylinder pole, and preferably, the take-up pulley 3 surface be equipped with driving belt 4 adaptation draw-in groove, the locating part be with the thickness setting that the distance on take-up pulley 3 surface is less than driving belt 4. The limiting members 5 are uniformly arranged at intervals along the circumferential direction of the tensioning wheel 3, and in the embodiment, the limiting members are three limiting members.

The specific implementation process is as follows: when the power output operation of the agricultural machine is stopped, the redundant length of the driving belt 4 is limited to the position of the driving wheel 1 because the limiting piece 5 is arranged at the far end and can be limited to move to the far end when the belt 4 is loosened, so that the driving belt 4 at the position of the driving wheel 1 is in a loose state, the driving belt 4 is separated from the driving wheel 1, and the power transmission of the driving wheel 1 and the driven wheel 2 is cut off.

Example two

A first difference from the embodiment is that, as shown in fig. 5, in this embodiment, the outer edge of the limiting member 5 is sleeved with a bushing 51.

The foregoing is merely an embodiment of the present utility model, and a specific structure and characteristics of common knowledge in the art, which are well known in the scheme, are not described herein, so that a person of ordinary skill in the art knows all the prior art in the application day or before the priority date of the present utility model, and can know all the prior art in the field, and have the capability of applying the conventional experimental means before the date, so that a person of ordinary skill in the art can complete and implement the present embodiment in combination with his own capability in the light of the present application, and some typical known structures or known methods should not be an obstacle for a person of ordinary skill in the art to implement the present application. It should be noted that modifications and improvements can be made by those skilled in the art without departing from the structure of the present utility model, and these should also be considered as the scope of the present utility model, which does not affect the effect of the implementation of the present utility model and the utility of the patent. The protection scope of the present application shall be subject to the content of the claims, and the description of the specific embodiments and the like in the specification can be used for explaining the content of the claims.

Claims

1. An agricultural machine comprises a transmission mechanism for driving the agricultural machine, wherein the transmission mechanism comprises a swingable tensioning arm and a tensioning wheel for connecting a driving wheel and a driven wheel in a transmission manner through a transmission belt, and the tensioning wheel is arranged on the tensioning arm; the method is characterized in that: the transmission mechanism further comprises a plurality of limiting pieces used for limiting the transmission belt on the tensioning wheel, wherein the limiting pieces are arranged on the tensioning arm in a non-detachable mode, and one limiting piece is located on one side, far away from the driving wheel, of the tensioning wheel.

2. An agricultural machine as claimed in claim 1, wherein: the minimum distance between the limiting piece and the surface of the tensioning wheel is smaller than the thickness of the transmission belt; the maximum distance between the limiting piece and the surface of the tensioning wheel is larger than the thickness of the transmission belt.

3. An agricultural machine as claimed in claim 2, wherein: the surface of the tensioning wheel is provided with a clamping groove matched with the transmission belt, and the distance between the limiting piece and the surface of the tensioning wheel is smaller than the thickness of the transmission belt.

4. An agricultural machine as claimed in claim 2, wherein: the limiting piece surface be equipped with the boss of driving belt adaptation, the limiting piece be with the distance on take-up pulley surface is less than the thickness setting of driving belt.

5. An agricultural machine according to any one of claims 1 to 4, wherein: the limiting piece is a cylindrical rod.

6. An agricultural machine as claimed in claim 5, wherein: and a bushing is sleeved on the outer edge of the limiting piece.

7. The agricultural machine of claim 6, wherein: the limiting pieces are uniformly arranged at intervals along the circumference of the tensioning wheel.