Cantilever central axle electric bicycle moment measuring device

A technology for electric bicycles and torque measurement, which is applied to vehicle components, rider driving, transportation and packaging, etc., and can solve problems such as complex structures

Inactive Publication Date: 2019-04-05
CHONGQING UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This type of method has better measurement linearity, but the structure is complex

Method used

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  • Cantilever central axle electric bicycle moment measuring device
  • Cantilever central axle electric bicycle moment measuring device
  • Cantilever central axle electric bicycle moment measuring device

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Embodiment Construction

[0045] In order to make the purpose, technical solution and advantages of the present invention clearer, the present invention will be further described in detail below in conjunction with the accompanying drawings.

[0046] see Figure 1 to Figure 4 , figure 1 It is a structural schematic diagram of a cantilever central axis electric bicycle torque measuring device disclosed in the present invention, figure 2 for figure 1 Schematic diagram of the interconnection of the middle cantilever beam sleeve, the locking sleeve and the strain gauge, image 3 It is a schematic diagram of the force analysis and strain gauge installation method of a cantilever central axis electric bicycle disclosed in the present invention, Figure 4 A schematic diagram of the strain bridge circuit.

[0047] The invention discloses a torque measuring device for an electric bicycle with a cantilever center shaft, which comprises a horizontally arranged bottom bracket tube. A horizontal center shaft ...

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Abstract

The invention discloses a cantilever central axle electric bicycle moment measuring device, comprising a five-way tube arranged horizontally, a horizontal central axle is rotatably arranged in the five-way tube, the both ends of the central axle respectively penetrate out of the both ends of the five-way tube, a left crank assembly and a right crank assembly are connected to the both ends of the central axle, and the right crank assembly is also provided with a vertical sprocket. A cantilever beam sleeve which is arranged coaxially and spaced between the inner wall of the five-way tube and thecentral axle and is hollow cylindrical as a whole is also included, the left end of the cantilever beam sleeve is connected and fixed to the left end of the five-way tube, the central axis is rotatably arranged in the inner ring of a bearing arranged vertically in the cantilever beam sleeve, and the cantilever beam sleeve is fixed relative to the axial position of the central axis. An elastic strain sensing device arranged on the cantilever beam sleeve is also included. The device is installed in the five-way tube, one end is fixed and the other end is suspended, and the moment output by a cyclist is obtained by detecting the mechanical deformation of the cantilever beam sleeve. Linearity is good, measurement is accurate, and the device can be used for feeding back data for motor intelligent control.

Description

technical field [0001] The invention relates to the technical field of tactile sensors, in particular to a torque measuring device for a cantilever center shaft electric bicycle. Background technique [0002] Ordinary electric bicycles use turning handles for speed regulation. This type of electric bicycle does not meet the relevant technical standards of Japan and the European Union for electric power-assisted bicycles, nor does it meet the requirements for "non-motorized vehicles" in my country's "new national standard" for electric bicycles. Some existing electric bicycles use cadence or sprocket speed sensors to control the output power of the motor. The characteristics of this type of electric bicycle are that it is easy to ride on flat ground, but it is very laborious to start and go uphill, which cannot satisfy the rider's real-time acceleration and deceleration. need. An ideal electric bicycle is preferably equipped with a torque sensor, which responds to the rider'...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B62M6/50
CPCB62M6/50
Inventor 徐世军
Owner CHONGQING UNIV OF TECH
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