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High precision micro-sensor and force guide apparatus

A technology of miniature sensors and guiding devices, applied in measuring devices, instruments, force/torque/power measuring instruments, etc., can solve problems affecting pantograph-catenary dynamic characteristics and reducing pantograph performance, etc.

Inactive Publication Date: 2006-02-15
CENT SOUTH UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The difficulty of pantograph-catenary contact pressure detection is that you cannot add weight to the pantograph at will, otherwise it will affect the dynamic characteristics of the pantograph-catenary and reduce the performance of the pantograph

Method used

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  • High precision micro-sensor and force guide apparatus
  • High precision micro-sensor and force guide apparatus
  • High precision micro-sensor and force guide apparatus

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Experimental program
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Embodiment Construction

[0011] If a strain gauge is used as a sensitive element, the method in Figure 2 can be used for pressure curing. In Fig. 2, the film (1b) is placed between the strain gauge and the rubber (2b), and the hard plate (3b) is tightly pressed against the rubber sheet by the extrusion of the insert (4b) to play the role of pressurization. The plug-in (4b) is not necessarily circular, but any hard object that can extrude. Also can not adopt plug-in unit (4b), and adopt any way that hard plate (3b) and rubber pad (2b) can be closely attached together to solve.

[0012] For different pantographs, different force directing devices should be used. The implementation cases of several force guiding devices are introduced respectively below.

[0013] 1. One of the implementation cases of the force guiding device is shown in Figure 3. Firstly, cut the original connecting part of the pantograph slide plate and the bracket at (4c), and weld it with a metal sheet. Fasten the housing (6c) of ...

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Abstract

This invention relates to a high accuracy mini-spoke-like sensor and force-guiding device. This sensor comprises the following parts: elastic body (the length of the axle can be lengthened according to the need) contains rim (1a), spoke (2a) and axle (3a), sensitive element (4a) and the protector composing of the sealing diaphragm (6a) and (7a), which is characterized by the following: the diameter is much less than the traditional spoke-like sensor. This design and craft can make the mini-spoke-like sensor satisfy the dimension of the sensor or the strict standard quality. The force-guiding device which measures the parameter of the electrical road pantograph and the touching pressure among the halftone contact is a double layer casing structure. One of the casings connects the slide (also named bower) of the pantograph; the other connects the shelf of the pantograph.

Description

(1) Technical field [0001] The invention relates to a high-precision miniature wheel-spoke sensor and a force guiding device for detecting contact pressure between electrified railway pantograph contact nets. [0002] In the family of high-precision sensors, the spoke sensor is favored by people for its high precision and strong anti-interference ability. This type of elastic body structure has the characteristics of little influence on the displacement of the stress point and minimal volume change caused by deformation, and its working state is very stable. At the same time, there is excellent natural linearity. As a weighing sensor, it has been widely used in the measurement of medium range (500kg ~ 50t) by various countries since the end of the 1970s; at the same time, it is also widely used as a torque sensor. [0003] The pantograph-catenary contact pressure detection is an advanced pantograph-catenary detection method in the world. By detecting the contact pressure bet...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01L5/00
Inventor 李丰良李敏
Owner CENT SOUTH UNIV