CN111594587A

CN111594587A - Automatic belt tensioning device for combine harvester

Info

Publication number: CN111594587A
Application number: CN202010576305.2A
Authority: CN
Inventors: 刘中林
Original assignee: Individual
Current assignee: Individual
Priority date: 2020-06-22
Filing date: 2020-06-22
Publication date: 2020-08-28

Abstract

The invention discloses an automatic belt tensioning device for a combine harvester, belongs to the technical field of agricultural machinery, solves the problem that a belt of the combine harvester is easy to loosen and fall off, and has the technical key points that: the harvesting belt pulley is connected with the transmission belt pulley through the transmission belt, the transmission belt pulley is connected with the driving belt pulley through the driving belt, and the transmission belt pulley is provided with a tensioning belt pulley; install the straining device who constitutes tensioning band pulley, the tensioning arm of force and pinch roller on the belt, through two pinch roller relative motion, cooperate with tensioning band pulley, be "nearly" style of calligraphy with the conveying belt tensioning, and then be favorable to making conveying belt tensioning between harvesting belt pulley and driving pulley, convenient operation is swift.

Description

Automatic belt tensioning device for combine harvester

Technical Field

The invention relates to the technical field of agricultural machinery, in particular to an automatic belt tensioning device for a combine harvester.

Background

Combine harvesters on the market at present mainly divide into half-feed formula and whole-feed formula two kinds of types, and whole-feed and half-feed all have own advantage, and half-feed formula combine adopts vertical header, and whole-feed formula combine adopts reel and cutter mode to realize the cutting to stem and stalk class plant, because the difference of header structure, the direct relation is to the operation effect ratio. Such as threshing cleanliness, influence on rice quality, straw utilization and the like.

The traditional whole-feed combine harvester basically adopts the transversely arranged axial-flow roller threshing and separating device, the arrangement mode has compact structure, and the operation performance is good when the feeding amount is small. However, when the belt is used, the belt in the driving mechanism is easy to loosen and slip, and the tension pressure of the transmission belt cannot be ensured. Therefore, it is desirable to provide an automatic belt tensioner for a combine harvester, which aims to solve the above problems.

Disclosure of Invention

Aiming at the defects in the prior art, the embodiment of the invention aims to provide an automatic belt tensioning device for a combine harvester, so as to solve the problems in the background technology.

In order to achieve the purpose, the invention provides the following technical scheme:

the utility model provides an automatic belt tensioning device for combine, includes reaping belt pulley, conveyer belt, driving pulley, driving belt and driving pulley, and reaping belt pulley passes through conveyer belt and connects driving pulley, and driving pulley passes through driving belt and connects driving pulley, the last tensioning band pulley of installing of conveyer belt, tensioning band pulley installs on the tensioning base, and the tensioning band pulley both sides all are equipped with the tensioning arm of force, and the tensioning arm of force middle part is installed on the tensioning base through the round pin axle, and the tensioning arm of force is close to conveyer belt's one end and is installed pinch roller, two the one end that conveyer belt was kept away from to the tensioning arm of force all articulates there is articulated seat, installs tensioning hydraulic cylinder between two articulated seats, tensioning.

As a further scheme of the invention, the harvesting belt pulley is arranged at one end of the harvesting rotating shaft, and the transmission belt pulley is arranged on the transmission shaft.

As a further scheme of the invention, a protective cover is arranged on the outer side of the harvesting belt pulley, and fixing lugs are welded on the protective cover.

As a further scheme of the invention, the driving belt is arranged on an output shaft, and the output shaft is connected with an engine.

As a further scheme of the invention, the tensioning base is installed on the combine harvester through a tensioning bracket, the pressing wheel is arranged on the outer side of the conveying belt, and the tensioning belt wheel is arranged on the inner side of the conveying belt.

As a further scheme of the invention, hinge holes are formed in the ends, far away from the conveying belt, of the two tension force arms, the hinge holes are connected with hinge seats through hinge shafts, and the tension springs are connected between the two hinge seats.

As a further scheme of the invention, a lifting chute perpendicular to the conveying belt is arranged on the tensioning base, a rotating shaft of the tensioning belt wheel is slidably arranged in the lifting chute, a shaft sleeve is arranged on the rotating shaft of the tensioning belt wheel, and the shaft sleeve is connected to a piston rod of the tensioning oil cylinder.

In summary, compared with the prior art, the embodiment of the invention has the following beneficial effects:

according to the automatic belt tensioning device for the combine harvester, the tensioning mechanism consisting of the tensioning belt wheel, the tensioning force arm and the pressing wheels is arranged on the belt, the two pressing wheels move relatively and are matched with the tensioning belt wheel to tension the conveying belt in a reversed U shape, so that the conveying belt can be tensioned between the harvesting belt wheel and the transmission belt wheel conveniently and quickly.

To more clearly illustrate the structural features and effects of the present invention, the present invention will be described in detail below with reference to the accompanying drawings and specific embodiments.

Drawings

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

Fig. 2 is a schematic structural diagram of the front surface of the tensioning base in the embodiment of the invention.

Fig. 3 is a schematic structural diagram of the back surface of the tension base in the embodiment of the invention.

Reference numerals: 1-harvesting rotating shaft, 2-harvesting belt pulley, 3-protective cover, 4-fixed lug, 5-conveying belt, 6-transmission shaft, 7-transmission belt pulley, 8-driving belt, 9-driving belt pulley, 10-output shaft, 11-engine, 12-tensioning bracket, 13-tensioning belt pulley, 14-tensioning force arm, 15-pin shaft, 16-pinch roller, 17-tensioning base, 18-tensioning hydraulic cylinder, 19-tensioning spring, 20-hinged seat, 21-hinged shaft, 22-hinged hole, 23-lifting chute and 24-tensioning oil cylinder.

Detailed Description

To facilitate an understanding of the present application, the present application will now be described more fully with reference to the accompanying drawings. Preferred embodiments of the present application are shown in the drawings. This application may, however, be embodied in many different forms and should not be construed as limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete.

The technical solution of the present invention is further described with reference to the accompanying drawings and specific embodiments.

Referring to fig. 1-3, an automatic belt tensioning device for a combine harvester comprises a harvesting belt pulley 2, a conveying belt 5, a transmission belt pulley 7, a driving belt 8 and a driving belt pulley 9, wherein the harvesting belt pulley 2 is installed at one end of a harvesting rotating shaft 1, the harvesting rotating shaft 1 is a threshing tooth installation shaft installed in a threshing cylinder at the front end of the combine harvester, and after wheat ears enter the threshing cylinder, the harvesting rotating shaft 1 drives the threshing teeth to rotate, so that high threshing efficiency and high threshing integrity can be maintained.

In order to avoid wheat ears from being entangled in the harvesting belt pulley 2, in one embodiment of the present invention, preferably, a protective cover 3 is disposed on the outer side of the harvesting belt pulley 2, and a fixing lug 4 is welded on the protective cover 3, so that the protective cover 3 can be conveniently fixed on the combine harvester through the fixing lug 4, and the harvesting belt pulley 2 can be isolated and protected.

A driving belt 8 is arranged between the transmission belt pulley 7 and the driving belt pulley 9, the driving belt 8 is arranged on an output shaft 10, and the output shaft 10 is connected with an engine 11; under the work of the engine 11, the driving belt 8 is driven to rotate through the output shaft 10, the transmission belt pulley 7 is driven to rotate through the driving belt 8, the harvesting belt pulley 2 and the harvesting rotating shaft 1 are driven to rotate through the transmission belt 5, and then the harvested wheat ears are conveniently threshed.

In order to avoid loosening of the conveying belt 5, a tensioning belt wheel 13 is mounted on the conveying belt 5, the tensioning belt wheel 13 is mounted on a tensioning base 17, the tensioning base 17 is mounted on the combine harvester through a tensioning support 12, tensioning force arms 14 are arranged on two sides of the tensioning belt wheel 13, the middle of each tensioning force arm 14 is mounted on the tensioning base 17 through a pin shaft 15, a pressing wheel 16 is mounted at one end, close to the conveying belt 5, of each tensioning force arm 14, the pressing wheel 16 is arranged on the outer side of the conveying belt 5, and the tensioning belt wheel 13 is arranged on the inner side of the conveying belt 5;

two one end that the tensioning arm of force 14 kept away from conveyer 5 all is equipped with hinge hole 22, connects articulated seat 20 through articulated shaft 21 in the hinge hole 22, installs tensioning pneumatic cylinder 18 between two articulated seats 20, the outside cover of tensioning pneumatic cylinder 18 is equipped with tensioning spring 19, and tensioning spring 19 connects between two articulated seats 20.

When the transmission belt 5 is tensioned, the two tensioning force arms 14 are driven to rotate around the pin shaft 15 by the stretching of the tensioning hydraulic cylinder 18, and when the two pressing wheels 16 move relatively, the two pressing wheels are matched with the tensioning belt wheel 13 to tension the transmission belt 5 in a U shape, so that the transmission belt 5 is tensioned between the harvesting belt wheel 2 and the transmission belt wheel 7.

As a preferred embodiment of the present invention, the tensioning mechanism composed of the tension pulley 13, the tension arm 14 and the pressing roller 16 can also be used for tensioning the driving belt 8.

As a preferred embodiment of the present invention, in order to further improve the tensioning effect on the conveying belt 5, a lifting chute 23 is provided on the tensioning base 17, the rotating shaft of the tensioning pulley 13 is slidably disposed in the lifting chute 23, a shaft sleeve is provided on the rotating shaft of the tensioning pulley 13, the shaft sleeve is connected to a piston rod of the tensioning cylinder 24, the tensioning pulley 13 is conveniently moved in a direction perpendicular to the conveying belt 5 under the pulling of the piston rod of the tensioning cylinder 24, so as to further tension the conveying belt 5, and the operation is convenient and fast.

The technical principle of the present invention has been described above with reference to specific embodiments, which are merely preferred embodiments of the present invention. The protection scope of the present invention is not limited to the above embodiments, and all technical solutions belonging to the idea of the present invention belong to the protection scope of the present invention. Other embodiments of the invention will occur to those skilled in the art without the exercise of inventive faculty, and such will fall within the scope of the invention.

Claims

1. The utility model provides an automatic belt tensioning device for combine harvester, includes reaping belt pulley (2), conveyer (5), driving pulley (7), driving belt (8) and driving pulley (9), reaping belt pulley (2) are through conveyer (5) connection driving pulley (7), and driving pulley (7) are through driving belt (8) connection driving pulley (9), its characterized in that, install tensioning pulley (13) on conveyer (5), install on tensioning base (17) tensioning pulley (13), and tensioning pulley (13) both sides all are equipped with the tensioning arm of force (14), and install on tensioning base (17) through round pin axle (15) tensioning arm of force (14) middle part, and tensioning arm of force (14) are close to the one end of conveyer (5) and install arm of force pinch roller (16), two the one end that conveyer (5) were kept away from in tensioning arm of (14) all articulates there is articulated seat (20), install tensioning hydraulic cylinder (18) between two articulated seats (20), tensioning hydraulic cylinder (18) outside cover is equipped with tensioning spring (19).

2. The automatic belt tensioning device for a combine harvester according to claim 1, characterized in that the harvesting pulley (2) is mounted at one end of the harvesting spindle (1) and the transmission pulley (7) is mounted on the transmission shaft (6).

3. The automatic belt tensioning device for the combine harvester according to claim 2, characterized in that a protective cover (3) is arranged outside the harvesting belt wheel (2), and a fixing lug (4) is welded on the protective cover (3).

4. The automatic belt tensioning device for a combine harvester according to claim 3, characterized in that the drive belt (8) is mounted on an output shaft (10), the output shaft (10) being connected to the engine (11).

5. The automatic belt tensioning device for a combine harvester according to claim 1, characterized in that the tensioning base (17) is mounted on the combine harvester by means of a tensioning bracket (12), the pressure roller (16) being arranged outside the conveyor belt (5) and the tensioning pulley (13) being arranged inside the conveyor belt (5).

6. The automatic belt tensioning device for the combine harvester according to claim 5, characterized in that the ends of the two tensioning force arms (14) far away from the conveyor belt (5) are provided with hinge holes (22), the hinge holes (22) are internally connected with hinge seats (20) through hinge shafts (21), and the tensioning spring (19) is connected between the two hinge seats (20).

7. The automatic belt tensioning device for the combine harvester according to any one of claims 1 to 6, wherein the tensioning base (17) is provided with a lifting chute (23) which is arranged perpendicular to the conveying belt (5), the rotating shaft of the tensioning belt wheel (13) is slidably arranged in the lifting chute (23), and the rotating shaft of the tensioning belt wheel (13) is provided with a shaft sleeve which is connected to a piston rod of the tensioning cylinder (24).