CN2557381Y

CN2557381Y - Dynamic detector for train wheel pair size

Info

Publication number: CN2557381Y
Application number: CN 02272152
Authority: CN
Inventors: 朱茂之; 赵旭东
Original assignee: Guangzhou Aote Control Engineering Co ltd
Current assignee: Guangzhou Aote Control Engineering Co ltd
Priority date: 2002-07-31
Filing date: 2002-07-31
Publication date: 2003-06-25
Anticipated expiration: 2012-07-31

Abstract

The utility model discloses a dynamic detector for train wheel pair size, comprising two same detectors. The two detectors are fixed at the two sides of a rail and are lower than the rail. Each detector consists of a semi-conductive laser, a photoelectric position sensitive sensor and an imaging lens. The photoelectric position sensitive sensor and the imaging lens are positioned on the optical axis of the lens according to the imaging relation. The laser light emitted by the semi-conductive laser is imaged on the photoelectric position sensitive sensor after being reflected by the wheel edge of the train wheel. When any train passes through, the wheel positioned between the two detectors ensures the two detectors having detecting signals; the two detectors respectively detect the distance between the point on the wheel lighted by the laser light and the detector. As the relatively position of the two detectors is fixed, the size of each part of the wheel edge can be detected.

Description

Train Wheel is to the size device for dynamically detecting

Technical field

The utility model relates to a kind of Train Wheel to the size device for dynamically detecting.

Background technology

Wheel is the important process of railway row inspection department to the detection of each oad, and all there are strict requirements to each size to wheel for regulations of railway technical operation, in case transfinite, will directly influence structural strength and stationkeeping ability, threaten traffic safety, even cause derailing, serious accident such as overturn.And the detection means of car inspection and maintenance department can only be to check the measurer hand inspection with special use when train parking operation at present, and labour intensity is big, and overhaul efficiency is low, easily goes out omission, can not adapt to the development need of the efficient operation of railway; Simultaneously because technical barrier such as requirement height, object complex contour to be measured, the field condition of survey precision be abominable, never dynamic measuring tech is applied to online the wheel size detection.

The utility model content

The purpose of this utility model be to provide a kind of can be to the device for dynamically detecting of the online detection Train Wheel of the train in advancing to size.

The purpose of this utility model can realize by following technical measures: comprise two identical detectors, two detectors are fixed in the both sides of a rail and are lower than rail, and each detector is made up of semiconductor laser, photopotential dependent sensor and imaging len; Photopotential dependent sensor and imaging len are positioned at by its imaging relations on the optical axis of these lens, the emission laser of semiconductor laser through the wheel rim catoptric imaging of train wheel in described photopotential dependent sensor.When train passes through, wheel in the middle of two detectors will make two detectors that detection signal is all arranged, two detectors detect the position of the point that is shone by laser on the wheel respectively apart from detector distance separately, the continuous gauging of a series of scanning spots, can record the right section-drawing of wheel, because the relative position of two detectors is definite, thereby just each right spot size of wheel can be detected after this position signal processing, as flange thickness, flange height, wheel footpath etc.

Two detectors described in the utility model are the both sides that axis is symmetrically fixed on a rail with the wheel rim of train wheel.

Semiconductor laser described in the utility model, photopotential dependent sensor and imaging len fixedly place in the box body by described position relation, and this box body is fixed in the bottom of described rail through anchor clamps.

The utility model utilizes laser-scan to survey, and has realized the online detection Train Wheel of the train in advancing dimensional parameters, and has adopted two detector measurements to make its relative measurement become absolute measurement, thereby guaranteed and improved overall measurement accuracy; Adopt light beam to penetrate obliquely in addition, the railway that must be lower than rail level is installed is detected requirement thereby satisfied all instrumentations, reduced mounting structure simultaneously, the distance between having reduced detecting device and rail being connected, reduce the amount of deflection of detecting device, improved aseismicity.

Description of drawings

Below in conjunction with the drawings and specific embodiments the utility model is further described.

Fig. 1 is the schematic perspective view of the utility model specific embodiment running condition;

Fig. 2 is the forward scheme drawing of the utility model specific embodiment running condition.

The specific embodiment

As shown in Figure 1 and Figure 2, comprise that 1, two detector of two identical detectors is that axis is symmetrically fixed on the both sides of a rail 3 and is lower than rail with the wheel rim 2 of train wheel, satisfied all instrumentations the railway detection requirement that must be lower than rail level is installed; Each detector is made up of semiconductor laser 4, photopotential dependent sensor 5 and imaging len 6, and semiconductor laser 4, photopotential dependent sensor 5 and imaging len 6 fixedly place in the box body 7, and box body 7 is fixed in the bottom of rail 3 through anchor clamps 8.Photopotential dependent sensor and imaging len are positioned at by its imaging relations on the optical axis of these lens, the emission laser of semiconductor laser through the wheel rim catoptric imaging of train wheel in the photopotential dependent sensor.When train passes through, the laser beam that two detectors send is got on the inboard and outside cambered surface of train wheel rim 2 obliquely simultaneously, their reflected light through lens imaging on photopotential dependent sensor (PSD), detect wheel rim by the position dimension of illuminated laser spot picture by the photopotential dependent sensor, the counter then position dimension of releasing its illuminated point, because the relative position of two detectors is determined, thereby just each right size detection of wheel can be come out.In like manner, two identical detectors are installed, are realized the right multimetering of Train Wheel in the both sides of another root rail.

Claims

1, a kind of Train Wheel is to the size device for dynamically detecting, it is characterized in that: comprise two identical detectors, two detectors are fixed in the both sides of a rail and are lower than rail, and each detector is made up of semiconductor laser, photopotential dependent sensor and imaging len; Photopotential dependent sensor and imaging len are positioned at by its imaging relations on the optical axis of these lens, the emission laser of semiconductor laser through the wheel rim catoptric imaging of train wheel in described photopotential dependent sensor.

2, Train Wheel according to claim 1 is characterized in that the size device for dynamically detecting: described two detectors are the both sides that axis is symmetrically fixed on a rail with the wheel rim of train wheel.

3, Train Wheel according to claim 1 is to the size device for dynamically detecting, it is characterized in that: described semiconductor laser, photopotential dependent sensor and imaging len fixedly place in the box body by described position relation, and this box body is fixed in the bottom of described rail through anchor clamps.