CN221145188U

CN221145188U - Transmission tensioning device for harvester

Info

Publication number: CN221145188U
Application number: CN202322701504.3U
Authority: CN
Inventors: 刘晓飞; 代占朝; 冯春凌; 王世强; 赵子龙; 宋华; 段国臣; 杜鹏; 魏志松
Original assignee: First Tractor Co Ltd
Current assignee: First Tractor Co Ltd
Priority date: 2023-10-09
Filing date: 2023-10-09
Publication date: 2024-06-14
Anticipated expiration: 2033-10-09

Abstract

The utility model relates to the field of auxiliary devices of agricultural harvesters, in particular to a transmission tensioning device for a harvester, which comprises a driving wheel, a driving part, an elastic pressing device, a side wall, a tensioning seat and a driven wheel, wherein a main wheel shaft and a driven wheel are arranged on the side wall, the driving wheel is connected with the driven wheel through the driving part for transmission, the tensioning seat is arranged on the side wall, a tensioning seat shaft is arranged on the tensioning seat, and a swinging arm capable of rotating around the tensioning seat shaft is hinged on the tensioning seat shaft.

Description

Transmission tensioning device for harvester

Technical Field

The utility model relates to the field of auxiliary devices of agricultural harvesters, in particular to a transmission tensioning device for a harvester.

Background

Currently, belt transmission, chain transmission, etc. are commonly used remote power transmission modes, such as belt transmission, wherein two parallel transmission shafts are adopted to realize power transmission through a belt pulley arranged on each shaft and a belt wound on the belt pulley, and the power transmission or cutting-off can be realized through tensioning and de-tensioning the belt, so that the belt tensioning has a clutch function. Meanwhile, on some large-scale machines, such as agricultural combine harvesters, belt transmission and chain transmission are widely applied as power transmission modes, on the existing combine harvesters, the belt transmission generally adopts a fixed tensioning or elastic tensioning mode, when the belt is needed to be replaced or the transmission ratio is needed to be adjusted, and when power is cut off, tension is needed to be unloaded by aid of a spanner or hydraulic and electric assistance, so that great inconvenience is brought to maintenance staff in a small maintenance space, meanwhile, the hydraulic and electric assistance mode is high in cost, complex in structure, and the problem of using reliability exists, so that the use requirement of people cannot be met.

Disclosure of Invention

The utility model aims to provide a transmission tensioning device for a harvester, which has simple and convenient overall structure composition, can quickly realize tension unloading or loading without any auxiliary tool when in use, further cuts off or combines power transmission, is convenient for replacing a transmission part or switching power, maintaining, adjusting the transmission ratio and the like, and has simple and reliable structure, economy and practicability.

In order to achieve the above purpose, the present utility model adopts the following technical scheme:

The utility model provides a transmission overspeed device tensioner for harvester, includes action wheel, driving piece, elasticity closing device, lateral wall, tensioning seat, follower, wherein, installs main shaft and axle on the lateral wall, and the action wheel is installed on the main shaft, and the follower is installed on the follow axle, and the action wheel passes through driving piece and follower connection transmission, installs the tensioning seat on the lateral wall, tensioning seat link firmly together with the lateral wall, install the tensioning seat axle on the tensioning seat, articulated install the swing arm that can wind tensioning seat axle pivoted on the tensioning seat axle one end of swing arm is equipped with the take-up pulley that can exert the tensioning force to the driving piece, elasticity closing device installs on the tensioning seat and can wind tensioning seat axle swing, elasticity closing device with the swing arm other end articulates, elasticity closing device with the swing arm can swing each other.

Further, the elastic pressing device comprises an adjusting arm, a support is arranged on the adjusting arm, the support is fixedly connected with the adjusting arm through bolts or welding and the like, a sleeve is arranged at the end of the adjusting arm, the other end of the adjusting arm is a free end, and the sleeve is installed on the tensioning seat shaft in a hinging mode.

Further, be provided with the ball vortex on the support be provided with the tee bend above the support, the ball vortex on the support with the tee bend match is guaranteed the tee bend can freely rotate in the ball vortex of support be equipped with tensioning spring above the tee bend, L type pull rod runs through support, tee bend and tensioning spring, and the lower extreme and the swing arm of L type pull rod are articulated.

Furthermore, an opening lock pin is arranged at the end part of the L-shaped pull rod to prevent the L-shaped pull rod from falling off from the swing arm, a nut and a gland are arranged above the tensioning spring, and the nut can reliably lock the gland and push the gland to adjust the tensioning force.

Further, a clamping seat is arranged on the side wall, a groove is formed in the clamping seat, the adjusting arm is arranged in the groove, and the groove structure can effectively prevent the adjusting arm from falling out of the clamping seat.

Further, the distance from the free end of the adjusting arm to the rotation axis is larger than the distance from the hinge point of the L-shaped pull rod and the swing arm to the rotation axis.

Further, the support and the swing arm are located on the same side of the adjusting arm.

Further, the transmission piece is a belt or a chain.

The beneficial effects of the utility model are as follows: the transmission tensioning device for the harvester has the advantages that the whole structure design is scientific, the operation and the use are simple and convenient, in the specific working and use process, the transmission tensioning device for the harvester can move the adjusting arm out of the groove of the clamping seat without any auxiliary tool, so that the tension of a belt or a chain can be quickly unloaded or loaded, the power transmission is cut off or combined, the operation of changing a transmission part or switching the power, maintaining, adjusting the transmission ratio and the like is convenient, and the whole structure is simple, reliable, economical and practical; in addition, when the belt tension device is used, the compression amount of the spring can be changed through the cooperation of the nut and the gland, and the elastic force of the spring can be adjusted steplessly, so that the adaptability of the elastic compression device to the belt length change is improved, and the belt tension force is adjusted conveniently and rapidly; the adjusting arm has a force arm longer than the tension spring, and the operation is labor-saving when the adjusting arm is rotated.

Drawings

FIG. 1 is a schematic view of the general construction of a transmission tensioner of the present utility model;

FIG. 2 is a schematic view of the mounting structure of the elastic pressing structure of the present utility model;

FIG. 3 is an exploded view of the ball seat and seat construction and location of the present utility model;

The reference numerals in the figures are: 1-a driving wheel; 2-a transmission member; 3-an elastic pressing device; 3.1-supporting seat; 3.2-adjusting arm; 3.3-nuts; 3.4-capping; 3.5-tensioning the spring; 3.6-sleeve; 3.7-split locking pins; 3.8-L-shaped pull rod; 3.9-ball seat; 4-side walls; 4.1-a clamping seat; 5-tensioning seat; 5.1-tensioning seat shaft; 6-a driven wheel; 7-swinging arms; 8-tensioning wheel.

Detailed Description

In order to make the technical solution of the present utility model better understood by those skilled in the art, the present utility model is further described in detail below with reference to the drawings and the detailed description, and it should be noted that when an element is referred to as being "fixed" or "disposed" on another element, it can be directly or indirectly connected to the other element. When an element is referred to as being "connected to" another element, it can be directly or indirectly connected to the other element. The terms "left" and "right" used in the present document to indicate orientation are each based on the specific structure shown in the drawings, and do not constitute a limitation on the structure.

Specific example 1: as shown in an attached figure 1 of the specification of the utility model, the transmission tensioning device for the harvester comprises a driving wheel 1, a transmission part 2, an elastic pressing device 3, a side wall 4, a tensioning seat 5 and a driven wheel 6, wherein a main wheel shaft and a driven wheel shaft are arranged on the side wall 4, the driving wheel 1 is arranged on the main wheel shaft, the driven wheel 6 is arranged on the driven wheel shaft, the driving wheel 1 is connected with the driven wheel 6 through the transmission part 2 for transmission, the tensioning seat 5 is fixed on the side wall 4, the swinging arm 7 is arranged on the tensioning seat 5 and can freely rotate around the tensioning seat shaft 5.1, when the tensioning device is arranged, the hinging point of the swinging arm 7 and the tensioning seat 5 is positioned between two ends of the swinging arm 7, one end of the swinging arm 7 is provided with a tensioning wheel 8 capable of exerting tensioning force on the transmission part 2, when the tensioning wheel 8 is arranged between the driving wheel 1 and the driven wheel 6, and the other end of the swinging arm 7 is provided with the elastic pressing device 3 hinged with the swinging arm 7.

As shown in fig. 2 and 3 of the specification of the present utility model, the elastic pressing device 3 of the present utility model includes an adjusting arm 3.2, a support 3.1 and a sleeve 3.6, the support 3.1 is installed on the adjusting arm 3.2, and the support 3.1 is fixed with the adjusting arm 3.2 by means of bolting or welding; the end of the adjusting arm 3.2 is provided with a sleeve 3.6, the other end of the adjusting arm 3.2 is a free end, the sleeve 3.6 is arranged on the tensioning seat 5 and can rotate around the tensioning seat shaft 5.1, and at the moment, the elastic pressing device 3 and the swing arm 7 can swing freely.

As shown in an attached figure 3 in the specification of the utility model, a ball vortex is arranged on a support 3.1, a ball seat 3.9 is arranged above the support 3.1, the ball vortex on the support 3.1 is matched with the ball seat 3.9 to ensure that the ball seat 3.9 can freely rotate in the ball vortex of the support 3.1, a spring 3.5 is arranged above the ball seat 3.9, an L-shaped pull rod 3.8 penetrates through the support 3.2, the ball seat 3.9 and a tensioning spring 3.5, the L-shaped pull rod 3.8 is hinged with a swing arm 7 at the lower end, an opening lock pin 3.7 is arranged at the end part of the L-shaped pull rod 3.8 to prevent the L-shaped pull rod 3.8 from falling off from the swing arm 7 after the L-shaped pull rod is hinged with the swing arm 7, and a nut 3.3 and a gland 3.4 are arranged above the tensioning spring 3.5.

As shown in fig. 3, which is a description of the present utility model, when the amount of tension applied to the transmission member 2 is adjusted, the compression amount of the tension spring 3.5 can be changed by adjusting the axial position of the nut 3.3 on the L-shaped tension rod 3.8, thereby changing the pressing force of the elastic pressing device 3.

As shown in the description of the utility model and the accompanying figure 1 and the description of the utility model and the accompanying figure 2, a clamping seat 4.1 with a groove is arranged on the side wall 4, the other end of the adjusting arm 3.2 is arranged in the groove of the clamping seat 4.1 after the transmission part 2 is pressed, so that the adjusting arm 3.2 is effectively prevented from falling out of the clamping seat 4.1, and the transmission part can effectively transmit at the moment; when the transmission member or the like is to be removed, the tensioning force can be relieved by simply removing the adjusting arm 3.2 from the recess.

Preferably, the distance from the free end of the adjusting arm 3.2 to the rotation axis is larger than the distance from the hinge point of the L-shaped pull rod 3.8 and the swing arm 7 to the rotation axis, so that the adjusting arm 3.2 has a force arm longer than the tensioning spring 3.5 under the condition that the tensioning moment of the tensioning spring 3.5 is fixed, the required rotating force is greatly reduced when the adjusting arm is rotated, the operation is labor-saving, the support 3.1 and the swing arm 7 are positioned on the same side of the adjusting arm 3.2, the L-shaped pull rod 3.8 can be conveniently hinged with the swing arm 7, the installation space is saved, and the transmission part 2 can be a belt or a chain.

The utility model also provides a combine harvester which is provided with a driving wheel 1, a driven wheel 6, a transmission piece 2 wound on the driving wheel 1 and the driven wheel 6, a tensioning wheel 8, a swinging arm 7, a side wall 4, a tensioning seat 5 arranged on the side wall, and an elastic pressing device 3, wherein the elastic pressing device can drive the swinging arm 7 to rotate so as to enable the tensioning wheel 8 to apply or withdraw the tensioning force on the transmission piece 2.

The working process and working principle of the transmission tensioning device for the harvester in specific use are as follows: when the transmission piece 2 needs to be tensioned, an operator can adjust the elastic pressing device 3, at the moment, the adjusting arm 3.2 is arranged in the groove of the clamping seat 4.1 on the side wall 4, the adjusting arm 3.2, the support 3.1 and the sleeve 3.6 are integrated, the adjusting arm 3.2 rotates anticlockwise around the tensioning seat shaft 5.1 through the sleeve 3.6 and drives the tensioning spring 3.5 above the support 3.1 to move and compress the tensioning spring 3.5, the ball seat 3.9 can rotate freely in the ball vortex of the support 3.1 to prevent the tensioning spring 3.5 from being askew after being pressed, the L-shaped pull rod 3.8 penetrates through the tensioning spring 3.5, the support 3.1 and the ball seat 3.9 and is hinged with the swing arm 7, at the moment, the adjusting arm 3.2 moves upwards and is clamped on the clamping seat 4.1, the swing arm 7 rotates anticlockwise around the tensioning seat shaft 5.1 under the driving of the L-shaped pull rod 3.8, at the moment, the tensioning wheel 8 rotates downwards to apply pressure to the transmission piece 2. Furthermore, the operator can vary the amount of compression of the tension spring 3.5 by adjusting the position of the nut 3.3 to vary the tension of the tension spring 3.5 for the purpose of varying the tension exerted on the transmission member 2 and the adaptability to the variation in length of the transmission member 2;

When power transmission is required to be cut off, a transmission part is replaced, a transmission ratio is required to be adjusted, an operator only needs to remove the adjusting arm 3.2 from the clamping seat 4.1 and rotate clockwise, at the moment, the L-shaped pull rod 3.8 drives the swing arm 7 to rotate clockwise around the tensioning seat shaft 5.1, the tensioning spring 3.5 is in a loosening state, the tensioning wheel 8 moves upwards, tensioning force applied to the transmission part 2 can be quickly unloaded, and as the distance from the free end of the adjusting arm 3.2 to the rotation axis is larger than the distance from the hinge point of the L-shaped pull rod 3.8 and the swing arm 7 to the rotation axis, the adjusting arm 3.2 has a force arm longer than the tensioning spring 3.5 under the condition that the tensioning moment of the tensioning spring 3.5 is fixed, the required rotating force is greatly reduced when the adjusting arm 3.2 is rotated, the operation is extremely labor-saving, any wrench or tool is not required in the whole process, the operation process is quick and convenient, the reliability is high, the whole structure is simple, the production manufacturing cost is low, and the requirement of people on tensioning adjustment of the transmission part 2 is greatly met.

The foregoing has shown and described the basic principles, principal features and advantages of the utility model. It will be understood by those skilled in the art that the present utility model is not limited to the embodiments described above, and that the above embodiments and descriptions are merely illustrative of the principles of the present utility model, and various changes and modifications may be made without departing from the spirit and scope of the utility model, which is defined in the appended claims.

Claims

1. The utility model provides a transmission overspeed device tensioner for harvester, its characterized in that, including action wheel (1), driving piece (2), elasticity closing device (3), lateral wall (4), tensioning seat (5), driven round (6), wherein, install main wheel axle and follow the shaft on lateral wall (4), action wheel (1) are installed on the main wheel axle, driven round (6) are installed on follow the shaft, action wheel (1) are connected the transmission through driving piece (2) and driven round (6), install tensioning seat (5) on lateral wall (4), tensioning seat (5) link firmly together with lateral wall (4), install tensioning seat axle (5.1) on tensioning seat (5), articulated install swing arm (7) around tensioning seat axle (5.1) pivoted on tensioning seat axle (5.1) one end of swing arm (7) is equipped with can exert tensioning force to driving piece (2), elasticity closing device (3) install on tensioning seat (5) and can wind tensioning seat axle (5.1) swing, elasticity closing device (3) and swing arm (7) can swing each other.

2. The transmission tensioning device for a harvester according to claim 1, characterized in that the elastic pressing device (3) comprises an adjusting arm (3.2), a support (3.1) is arranged on the adjusting arm (3.2), the support (3.1) is fixedly connected with the adjusting arm (3.2) through bolts or welding, a sleeve (3.6) is arranged at the end part of the adjusting arm (3.2), the other end of the adjusting arm (3.2) is a free end, and the sleeve (3.6) is arranged on the tensioning seat shaft (5.1) through a hinging mode.

3. The transmission tensioning device for the harvester according to claim 2, wherein a ball vortex is arranged on a support (3.1), a ball seat (3.9) is arranged above the support (3.1), the ball vortex on the support (3.1) is matched with the ball seat (3.9) to ensure that the ball seat (3.9) can freely rotate in the ball vortex of the support (3.1), a tensioning spring (3.5) is arranged above the ball seat (3.9), an L-shaped pull rod (3.8) penetrates through the support (3.1), the ball seat (3.9) and the tensioning spring (3.5), and the lower end of the L-shaped pull rod (3.8) is hinged with a swing arm (7).

4. A transmission tensioning device for a harvester according to claim 3, characterized in that an opening lock pin (3.7) is arranged at the end part of the L-shaped pull rod (3.8) to prevent the L-shaped pull rod (3.8) from falling off from the swing arm (7), a nut (3.3) and a gland (3.4) are arranged above the tensioning spring (3.5), and the nut (3.3) is used for reliably locking the gland (3.4) and pushing the gland (3.4) to adjust the tensioning force.

5. The transmission tensioning device for the harvester according to claim 2, characterized in that a clamping seat (4.1) is arranged on the side wall (4), a groove is formed in the clamping seat (4.1), the adjusting arm (3.2) is arranged in the groove, and the groove structure can effectively prevent the adjusting arm (3.2) from falling out of the clamping seat (4.1).

6. A transmission tensioner for a harvester according to claim 3, characterized in that the free end of the adjusting arm (3.2) is at a distance from the axis of rotation which is greater than the distance from the hinge point of the L-shaped pull rod (3.8) and the swing arm (7).

7. A transmission tensioner for harvesters according to claim 2, characterized in that the support (3.1) is located on the same side of the adjusting arm (3.2) as the swing arm (7).

8. A transmission tensioner for a harvester according to claim 1, characterized in that the transmission (2) is a belt or a chain.