CN2935161Y - Probe landing gear for steel rail flaw detection device - Google Patents

Abstract

A rail-defect device using a detector landing gear belongs to the coachwork technology field of the detector landing gear. Two trolley slid ways are arranged at the top and the down of a square chest inside surface, each trolley slid way has a protruding figure cross-section; between the two slid ways locates a plank. A vertical trolley and a lateral trolley are arranged respectively on the top side and the down side of the plank. A lever is arranged on the side face of the square chest, with the front end pushing against the outside arm of a four bar linkage mechanism. The working principle of the product is: after starting up the cylinder, the cylinder lever moves to the limit position, the location wheel pushes against the side face of the rail head. With the squeeze of the rail the plank moves backwards, the spring is under the condition of energy storage, at the same time the lever leaves away from the outside arm, bringing the detector up pushing against the bottom plane of the rail closely, and with the crushing of the rail the spring drew by the lever is storing energy. When the rail sways to the left and right, the spring sways and flexes accordingly to accomplish the lateral moving of the detector following the testing rail. When the rail flop fluctuate, the lever draws the spring flexing following the rail, the detector pushes against the bottom plane of the rail all the time, accomplishing the vertical moving following the rail, thereby the device does not omit, improving the detecting effect.

Description

Rail examination device probe undercarriage

Technical field

The utility model belongs to the design and the manufacturing technology field of the probe undercarriage that the rail examination device uses.

Background technology

Rail Production producer all will carry out carrying out flaw detection to product by national requirements.All be to adopt non destructive detection mothod at present.Be about to probe and be installed on the undercarriage probe web joint, will detect the position to it and detect in that rail is in service.Require the detecting head surface detected position of comprehensive engagement of trying one's best in the detection.In case omission.But the invar rail is in operation and can produces the rigidity distortion, and the head of rail and afterbody also have bending in rolling in addition, make that the operation of rail is not linearly, occur the swing of upper and lower, left and right at any time.This just requires probe must have pair detected material to have and well follows action, remains probe and contacts with the effective of tested position.But present employed undercarriage is not very desirable in this respect.Owing to structural reason, undercarriage is placed in the position, oblique upper 45 place of detected rail now.Yet the relative square chest of planker in service stretch out or withdrawal and planker are flexible along level and vertical angle 45 degree directions with the flexible route of rail, can not realize single horizontal servo-actuated or single vertical servo-actuated.Horizontal servo-actuated interferes with each other with vertical servo-actuated, causes following position inaccurate, makes probe can't contact the tested position of rail continuously exactly, causes omission.In addition, what the planker of existing undercarriage and square chest adopted is that dovetail groove connects, the influence of the acting force of invar rail operation and the frictional resistance of dovetail groove self, and planker jam phenomenon is very serious, can not freely stretch, the work of can't normally detecting a flaw.

Summary of the invention

The purpose of this utility model provides a kind of horizontal servo-actuated and vertical servo-actuated that realizes that planker is single to tested rail, and planker the probe undercarriage of jam phenomenon can not occur to square chest, to overcome the shortcoming that existing equipment exists.

Structure of the present utility model is as shown in drawings: it is convex shape roller slideway that a section is respectively arranged up and down in the inboard of square chest.One planker is arranged between up and down slideway, one vertical wheel and horizontal roller are respectively arranged both sides up and down at planker.There is a cylinder on the square chest right side.One latch plate is arranged on the planker inner face, have spring on the latch plate, cylinder rod is bound up on the latch plate.There is a location to roll on the left side of planker.On four connecting rod fixed heads of the lateral surface of square chest, a four-bar mechanism is arranged.Have connecting rod pulling spring in the four-bar mechanism.One lever is arranged on square chest.The lever upper end is resisted against on the outer arm of four-bar mechanism.One probe web joint is arranged in the four-bar mechanism bottom.Probe is arranged above the web joint.Probe and location have as detected rail between rolling.

Use of the present utility model is its level to be installed in rail carry raceway one side.Its method of work is: when this product was in the original position, planker was in advanced position, and lever moves down four connecting rods to four connecting rod outer arm effects, reserved the safe distance of probe and tested rail, and four connecting rod outer arms are in energy accumulating state.When starting cylinder, the cylinder rod stroke drives the planker reach to extreme position, and roll on the rail head side that is resisted against tested rail the location of this moment, drives planker and moves backward down the crowded of rail, and spring is drawn back simultaneously, is energy accumulating state.The lever of this moment breaks away from four connecting rod outer arms, and four connecting rods pulling spring is released, and drives probe and rises, and probe is supported be attached on the rail flange of rail face.By its rail gravity, make the four-bar mechanism action, drive probe and move down.Pulling spring on the four-bar mechanism is drawn back, and is energy accumulating state.When rail moves forward, pop one's head in to support all the time to be attached on the rail flange of rail face, detect, when rail swung, planker compeled to bounce back down or reach at the location edging, and the spring on the planker is released or strains, and drives the location and rolls all the time against the rail head side.Probe on the planker drive four-bar mechanism is done left and right horizontal and is moved, and probe is supported all the time be attached on the tested rail flange of rail plane.Finish horizontal servo-actuated action.When rail meets bending section up and down, be in operation when jumping phenomena occurring, constantly discharge, strain by pulling spring in the four-bar mechanism, the probe that makes the bottom is finished the vertical servo-actuated action of probe to the flange of rail all the time to being attached on the flange of rail lower plane.This product has vertical wheel and horizontal roller owing to have convex shape roller slideway in the upper and lower of square chest on the planker.Wherein narrower slideway is the vertical wheel slideway, broad be the horizontal roller slideway.Increase the lubricant effect of planker, moved smoothly, improved the effect of horizontal servo-actuated effectively.Owing to have four-bar mechanism, make that again probe is more smooth to the vertical servo-actuated of rail.Having improved detection effect and quality greatly, is a kind of desirable rail pick-up unit probe undercarriage.Overcome existing product and can not realize the shortcoming that single vertical servo-actuated and horizontal servo-actuated are moved.

Description of drawings

Accompanying drawing is the utility model structural representation

1-square chest 2-planker 3-cylinder 4-cylinder rod 5-spring 6-four-bar mechanism 7-four connecting rod fixed head 8-probe web joint 9-probe 10-rolls the detected rail of 11-connecting rod pulling spring 12-lever 13-vertical wheel 14-horizontal roller 15-in the location

Embodiment

Structure of the present utility model is as shown in drawings: it is convex shape roller slideway that a section is respectively arranged up and down in the inboard of square chest (1).Between two slideways a planker (2) being arranged up and down, a vertical wheel (13) and horizontal roller (14) are arranged respectively in the both sides up and down of planker.Vertical wheel and horizontal roller are embedded in the up and down slideway.One latch plate is arranged on the inner face of planker, have spring (5) on this plate.There is a cylinder (3) on the right side of square chest, and cylinder rod (4) connects with latch plate.On the left side of planker, there is a location to roll (10).One or four connecting rod fixed heads are arranged on the square chest lateral surface, have four-bar mechanism (6) on the fixed head.Have connecting rod pulling spring (11) in the four-bar mechanism.One lever (12) is arranged on square chest, and the lever upper end is against on the outer arm of four-bar mechanism.In the bottom of four-bar mechanism one probe web joint (8) is arranged, have probe (9) on the web joint.Between rolling, probe and location be detected rail (15).

Claims (1)

1. Rail examination device probe undercarriage, constitute by square chest (1), planker (2) and cylinder (3), it is characterized in that in the inboard of square chest (1) section being arranged respectively up and down is convex shape roller slideway, one vertical wheel (13) and horizontal roller (14) are respectively arranged in the both sides up and down of planker, one or four connecting rod fixed heads are arranged on the square chest lateral surface, have four-bar mechanism (6) on the fixed head, have connecting rod pulling spring (11) in the four-bar mechanism, a lever (12) is arranged on square chest.

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