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Railway train clearance measurement datum acquiring method

A technique for measuring benchmarks and obtaining methods, which is applied in the field of precision measurement

Inactive Publication Date: 2011-04-13
NANJING UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The object of the present invention is: the technical problem to be solved by the present invention is to provide a principle based on target transfer to realize the center of the rail under the situation that the rail surface cannot be directly observed. Vertical measurement method

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Embodiment Construction

[0022] A measuring device for the reference plane of railway freight train boundary measurement based on target transfer, the device includes rotatable targets (1) (2) (3), vertical support beams (4), support rods (5), fixed Fixtures (6) (14) (16) (17), rigid beams (7) (10) (13) (15) (18) (19), horizontal support beams (8), shafts (9) (11) ( 12), spring (20) (21) (22) (23), chute (24) (25).

[0023] The present invention also provides a kind of measurement of the reference plane of the boundary measurement of railway freight trains, which is applied to the above-mentioned measuring device, comprising the steps of:

[0024] Step 1: Fix the above measuring device on the rail, make sure that the hemispherical structure at the bottom of the fixing fixture (6) (14) (16) (17) is firmly stuck on the rail, and the lower surface of the horizontal part of the fixture is close to the upper surface of the rail.

[0025] Step 2: Use the same method as Step 1 above to set up another set of...

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Abstract

The invention discloses a railway freight train clearance measurement datum acquiring method. A target transfer-based track center vertical plane detection device is adopted for measurement; and the detection device comprises a rotatable target, a vertical support beam (4), a support rod (5), a fixing clamp, rigid crossbeams (10 and 15), a rigid connecting crossbeam, a horizontal support beam (8), a rotating shaft, a spring, and chutes (24 and 25), wherein the rotatable target fixed on the vertical support beam is three square sheets capable of rotating around the rotating shaft; the rotatingshaft is positioned in the central axis of the square sheets; identifiers which are easily identified by a computer visually are attached to the surfaces of the sheets, so that an image identification system can obtain coordinates of the central point of the target; and the vertical support beam (4) is fixedly connected with the rotating shaft of the rotatable target. Based on a vision sensor principle and by adopting a target transfer method, the track center vertical plane is measured under the condition that the track surface cannot be directly observed, and the vision measurement technology is applied to railway clearance detection.

Description

Technical field [0001] The present invention is a precision measurement method, which specializes in a method that uses the target transmission based on the target to achieve the measurement method of the vertical surface of the rail center without directly observing the rail surface. Background technique [0002] In recent years, domestic railways have been accelerated many times, especially the operation of high -speed EMUs, and train driving is getting faster and faster, which has also put forward higher requirements for the safety of the railway.When trains, especially freight trains exceeding the restrictions of normal driving, are called over -limits, which may cause serious safety accidents at this time.Therefore, the measurement of the over -limits of railway cargo trains such as railway freight trains is extremely important.In the limited boundary testing, in order to confirm whether the sides of the cargo are over -limited, the three -dimensional size of the cargo must ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01C3/00
Inventor 王顺张益昕谢飞张旭苹李建华
Owner NANJING UNIV