Conveying structure with adjustable working height for harvester

Abstract

The utility model discloses a work height adjustable conveying structure for a harvester, which comprises a conveying chute shell and a conveying structure, the conveying structure comprises a chain, a driving wheel and a driven wheel, the driving wheel is fixed in the conveying chute shell, the driven wheel is arranged at one end of a support arm, the other end of the support arm is rotatably connected to the conveying chute shell, and the chain is fixed on the conveying chute shell. An upper limiting block and a lower limiting block are arranged above and below the supporting arm respectively and are both cuboids, the end face of one side of the upper limiting block and the end face of one side of the lower limiting block are connected with the end face of one side of the supporting arm, the limiting blocks are installed on an installation plate through a detachable structure, and the installation plate is installed on a parameter conveying shell. The height of the driven wheel is adjusted through rotation of the supporting arm, so that the distance between the chain and the bottom of the conveying groove shell is adjusted, then the supporting arm is limited through the upper limiting block and the lower limiting block, and when rice and corn are recycled, different heights can be selected for recycling work.

Description

Technical Field

[0001] The utility model relates to a conveying structure with adjustable working height for a harvester. Background Art

[0002] With the promotion and popularization of the multi-purpose function of harvesters, more and more rice and wheat harvesters are harvesting corn crops. When harvesting corn crops, the conveyor trough serves to transport the crops fed by the cutting table to the threshing backpack. Since corn crops are in the shape of sticks and have a large diameter, the gap between the passive wheel of the conveyor trough in the rice and wheat state and the bottom plate of the conveyor trough is small. If corn is harvested in this state, the corn cobs are prone to cause grain breakage, grain loss and damage to related parts of the passive wheel. Utility Model Content

[0003] The purpose of the utility model is to solve the above deficiencies in the prior art and provide a conveying structure with adjustable working height for a harvester.

[0004] A conveying structure with adjustable working height for a harvester comprises a conveying trough shell, a conveying structure, and the conveying structure comprises a driving wheel and a driven wheel. The driving wheel is fixed in the conveying trough shell, the driven wheel is installed at one end of a support arm, and the other end of the support arm is rotatably connected to the conveying trough shell. An upper limit block and a lower limit block are respectively provided above and below the support arm. Both the upper limit block and the lower limit block are rectangular parallelepipeds, and one side end face of the upper limit block and the lower limit block is connected to one side end face of the support arm. The limit blocks are installed on a mounting plate through a detachable structure, and the mounting plate is installed on the conveying trough shell. The tensioning shaft is connected to the tensioner.

[0005] Working principle: The height of the driven wheel is adjusted by rotating the support arm, thereby adjusting the distance between the chain and the bottom of the conveyor trough shell, and then the support arm is limited by the upper limit block and the lower limit block. When recycling rice and corn, different heights can be selected for recycling.

[0006] For easy installation, the support arm is rotatably connected to the conveying trough shell through a tensioning shaft, and the tensioning shaft is connected to the conveying trough shell through a nut, a spring washer and a flat washer.

[0007] In order to facilitate disassembly and assembly, the upper limit block and the lower limit block are connected to the mounting plate through nuts, spring washers and flat washers.

[0008] Beneficial effects: Compared with the prior art, the utility model adjusts the height of the driven wheel by rotating the support arm, thereby adjusting the distance between the chain and the bottom of the conveyor trough shell, and then limits the support arm by the upper limit block and the lower limit block. When recycling rice and corn, different heights can be selected for recycling. BRIEF DESCRIPTION OF THE DRAWINGS

[0009] Figure 1 It is the internal structure diagram from the main viewing angle;

[0010] Figure 2 This is a top-down view of the internal structure;

[0011] Figure 3 is a schematic diagram of the interior of the conveyor trough shell in one state;

[0012] Figure 4 It is a schematic diagram of the interior of the conveying trough shell in another state;

[0013] In the figure, 1, driven wheel, 2, support arm, 3, upper limit block, 4, lower limit block, 5, chain, 6, conveyor trough shell, 7, driving wheel, 8, tensioning shaft. DETAILED DESCRIPTION

[0014] In order to deepen the understanding of the present invention, the present invention will be further described in detail below in conjunction with embodiments and drawings. The embodiments are only used to explain the present invention and do not constitute a limitation on the protection scope of the present invention.

[0015] like Figure 1-2 As shown, a driven wheel 1, a support arm 2, an upper limit block 3, a lower limit block 4, a chain 5, a conveying trough housing 6, a driving wheel 7, and a tensioning shaft 8.

[0016] A conveying structure with adjustable working height for a harvester comprises a conveying trough shell 6 and a conveying structure, wherein the conveying structure comprises a chain 5, a driving wheel 7 and a driven wheel 1, wherein the driving wheel 7 is fixed in the conveying trough shell 6, and the driven wheel 1 is mounted on one end of a support arm 2, and the other end of the support arm 2 is rotatably connected to the conveying trough shell 6, and an upper limit block 3 and a lower limit block 4 are respectively provided above and below the support arm 2, and both the upper limit block 3 and the lower limit block 4 are rectangular parallelepipeds, and one side end face of the upper limit block 3 and the lower limit block 4 is connected to one side end face of the support arm 2, and the limit blocks are mounted on a mounting plate through a detachable structure, and the mounting plate is mounted on the conveying trough shell, and a tensioning shaft 8 is connected to a tensioner.

[0017] In this embodiment, the support arm 2 is rotatably connected to the conveying trough housing 6 via a tensioning shaft, and the tensioning shaft is connected to the conveying trough housing 6 via a nut, a spring washer and a flat washer.

[0018] In this embodiment, the upper limit block 3 and the lower limit block 4 are connected to the mounting plate through nuts, spring washers and flat washers.

[0019] Specific working process: when the height of the driven wheel 1 needs to be adjusted, the upper limit block 3 and the lower limit block 4 are loosened, and the limit blocks are rotated so that the sides of different lengths are connected to the support arm 2, so as to achieve the purpose of adjusting the height of the working space.

[0020] like Figure 3 , Figure 4As shown, the height of the support arm is adjusted from L to L3, and the height between the scraper on the chain and the bottom surface of the shell is changed from L1 to L2.

[0021] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A conveying structure with adjustable working height for a harvester, characterized in that: It includes a conveying trough shell and a conveying structure, wherein the conveying structure includes a chain, a driving wheel and a driven wheel, the driving wheel is fixed in the conveying trough shell, the driven wheel is installed at one end of the support arm, the other end of the support arm is rotatably connected to the conveying trough shell, an upper limit block and a lower limit block are respectively provided above and below the support arm, the upper limit block and the lower limit block are both rectangular, one side end face of the upper limit block and the lower limit block are connected to one side end face of the support arm, the limit block is installed on the mounting plate through a detachable structure, and the mounting plate is installed on the conveying trough shell.

2. The conveying structure with adjustable working height for a harvester according to claim 1, characterized in that: The support arm is rotatably connected to the conveying trough shell through a tensioning shaft, the tensioning shaft is connected to the conveying trough shell through a nut, a spring washer and a flat washer, and the tensioning shaft is connected to the tensioner.

3. The conveying structure with adjustable working height for a harvester according to claim 1, characterized in that: The upper limit block and the lower limit block are connected to the mounting plate through nuts, spring washers and flat washers.

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