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Negative pressure fan transmission device

A technology of transmission device and negative pressure fan, which is applied in the direction of fertilization device, mechanical equipment, single grain seeder, etc., to achieve the effect of reducing slip coefficient, improving transmission ratio and transmission efficiency, and reasonable transmission structure

Inactive Publication Date: 2013-10-16
陈恒
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In the connection transmission of this structure, there is a defect that when the negative pressure fan is required to work, the four-wheel tractor and the fan must be started at the same time. Due to the increase in the load of the starting fan, it is relatively difficult to start the four-wheel tractor, especially when the crank is used. It is more difficult when four-wheel tractor

Method used

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Embodiment Construction

[0011] The symbols in the figure represent respectively: 1—second pulley, 2—bearing, 3—shaft, 4—nut, 5—centrifugal friction block, 6—pin shaft, 7—friction plate, 8—fixed plate, 9—first pulley , 10—fan pulley, 11—fan, 12—fan frame, 13—spring, 14-small hole (on the centrifugal friction block), 15-boss (at the center of the fixed plate), 16-small hole (boss Up).

[0012] Such as figure 1 Shown in -3, the present invention mainly comprises fan frame and the blower fan that is installed on the fan frame and transmission device, and transmission device is the first belt pulley 9 that can be connected with the driving pulley (145mm) on the output shaft of the tractor and with fan belt pulley The second pulley 1 connected with 10 is coaxially connected with the shaft 3 through the bearing 2 and locked with the nut 4. One side of the middle part of the second pulley 1 is in a circular concave shape, and a centrifugal clutch is arranged in the concave shape, so that the second pulley ...

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Abstract

The invention relates to a negative pressure fan transmission device which is an auxiliary device for an agricultural seeder, and concretely relates to a transmission device in a (tractor) front negative pressure fan on a pneumatic precision seeder, wherein the transmission device is provided with a clutch mechanism. The fan transmission device which mainly comprises a fan support and a fan and the transmission device arranged on the fan support is characterized in that: the transmission device comprises a first belt pulley (9) connected with the driving belt pulley on a tractor output shaft and a second belt pulley (1) connected with a fan belt pulley (10); the first belt pulley (9) has a coaxial connection with the second belt pulley (1) through a bearing (2) and a shaft (3); one side of the intermediate part of the second belt pulley (1) has a ring-shaped concave; and a centrifugal type clutch is arranged in the concave to make the second belt pulley (1) be in a clutch state within a certain rotating speed. The fan transmission device of the invention has advantages of reasonable transmission structure, stable performance, simple structure, convenient operation, low cost, and the like.

Description

technical field [0001] The invention relates to a negative pressure fan transmission device, especially an auxiliary device for an agricultural seeder, specifically a transmission device with a clutch mechanism in a (tractor) front-mounted negative pressure fan on an air-suction precision seeder. device. technical background [0002] At present, agricultural four-wheel tractors are used as the driving force when air-suction precision seeders are widely used, and most of the installation and transmission methods of air-suction negative pressure fans and agricultural four-wheel tractors are front-mounted, that is, negative pressure fans. The frame is installed on the front bumper of the four-wheel tractor, and the side output wheel of the tractor is connected and driven by a V-belt to a smaller pulley coaxial with the fan blade wheel. The transmission ratio between the two is about 1:4. In the connection transmission of this structure, there is a defect that when the negativ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): A01C19/00A01C7/04
CPCF16D43/18F16D2043/145
Inventor 陈恒
Owner 陈恒
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