Tractor suspension force measuring device

A force measuring device and tractor technology, applied in the direction of measuring devices, measuring force, instruments, etc., can solve the problems of inaccurate measurement results, fixed measurement direction, etc., and achieve the effects of increasing reliability, improving accuracy, and weakening drastic changes

Pending Publication Date: 2018-11-20
NANJING AGRICULTURAL UNIVERSITY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] In order to solve the problem of fixed measurement direction and inaccurate measurement results of existing shaft-pin sensors, the present invention provides a tractor-suspended force-measuring device

Method used

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  • Tractor suspension force measuring device

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Experimental program
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Embodiment Construction

[0019] The present invention will be further explained in detail below in conjunction with the accompanying drawings and specific embodiments, but it should be understood that the protection scope of the present invention is not limited by the specific embodiments.

[0020] Such as figure 1 As shown, a tractor suspension force measuring device uses a pivot pin sensor 1 to measure the traction force, including a pivot pin and a Wheatstone bridge circuit.

[0021] A tractor three-point suspension force measuring device. Considering the convenience of installation and use, the pivot pin sensor 1 is installed at the hinge point between the three-point suspension pull rod 2 and the tractor body, and one end is connected to the front-end traction equipment through a universal joint coupling. One end is connected to the pull rod 2, the front-end traction device is a tractor, the rear-end device is a farm tool or other equipment that needs towing, and the pull rod 2 is connected to th...

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PUM

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Abstract

The invention relates to a tractor suspension force measuring device. The tractor suspension force measuring device comprises an axle pin sensor, wherein the axle pin sensor is connected between a rear end device and a front end traction device through a universal joint coupling, the axle pin type sensor includes an axle pin, the axle pin is provided with a through hole in the axial direction, a first double shear strain gauge and a second double shear strain gauge are disposed in the through hole, the first double shear strain gauge and the second double shear strain gauge are disposed on a tractor traction force measuring point, the first double shear strain gauge includes a first strain gauge and a second strain gauge, the second double shear strain gauge includes a third strain gauge and a fourth strain gauge, and the first strain gauge, the second strain gauge, the third strain gauge and the fourth strain gauge are connected in series. The traction force with the changing direction is transformed into the radial force with the fixed direction for the pin, drastic change of a measured value with change of a suspension angle is weakened, and detection accuracy is improved.

Description

technical field [0001] The invention relates to a force measuring device, in particular to a tractor suspension force measuring device. Background technique [0002] In the operation of tractor farm implements, in order to improve the efficiency and quality of work, it is necessary to control the traction of farm implements. Because of the advantages of high precision, large measurement range, simple structure, good frequency response characteristics, and easy real-time monitoring of tractor traction, the pivot pin sensor has been widely used in tractor suspension force measuring devices. [0003] The principle of the traditional pin sensor is to open a groove in the center hole of the pin and the shear position of the pin. At the center of the groove in the central hole, double shear strain gauges are arranged in the direction of the unidirectional force, and a Wheatstone bridge is formed, and the unidirectional load is calculated by the output value of the bridge. This p...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01L1/22
CPCG01L1/22
Inventor 高强鲁植雄薛金林唐廷彩莫浩彬
Owner NANJING AGRICULTURAL UNIVERSITY
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