CN114104019A

CN114104019A - Self-balancing ultrasonic railway steel rail detection trolley

Info

Publication number: CN114104019A
Application number: CN202111495370.3A
Authority: CN
Inventors: 刘大伟; 齐效文; 刘维尚; 庞世发
Original assignee: Yanshan University
Current assignee: Yanshan University
Priority date: 2021-12-09
Filing date: 2021-12-09
Publication date: 2022-03-01
Anticipated expiration: 2041-12-09
Also published as: CN114104019B

Abstract

The invention discloses a self-balancing ultrasonic railway steel rail detection trolley. Two sliders I and II (23 and 23 ') are installed at the bottom of the detection trolley balance water tank (13) and are in sliding contact with the upper surfaces of the two guide rails I and II (15 and 15') respectively. The gyroscope angle sensor (12) is used for detecting the direction and the amplitude of the left side and the right side of the detection trolley in real time and sending the motion information to the water tank electric push rod (14), and the balance water tank (13) is pushed by the balance water tank electric push rod (14) to enable the balance water tank (13) to move reversely in the inclined direction along the guide rails I and II (15 and 15'), so that the integral gravity center of the detection trolley is adjusted, and the purpose of balancing the detection trolley is achieved. The invention can correct the balance state of the detection trolley at the moment of detecting the inclination of the trolley, and can reduce the labor intensity of workers and the detection accuracy.

Description

Self-balancing ultrasonic railway steel rail detection trolley

Technical Field

The invention relates to the technical field of railway steel rail detection, in particular to a self-balancing ultrasonic railway steel rail detection trolley.

Background

The train operation safety is the primary problem of rail transit. The steel rail is the most basic part of the track, and the working state of the steel rail is directly related to the train running safety. The detection of the state of the steel rail is efficiently and accurately carried out, and the detection of the defects of the steel rail in time is one of important safety measures of the ministry of railways. Along with the development of high speed, heavy load and high density of the train, the time of a detection window is shorter and shorter, and the requirement on the detection efficiency is higher and higher, so that higher requirements are provided for the automation and the intellectualization of the detection device.

The rail detector is a special device for detecting rail damage on the rail, and various defects of the rail can be effectively detected by utilizing ultrasonic waves. At present, various small and portable steel rail flaw detectors which are manually propelled or electrically propelled are widely adopted.

The invention patent with publication number CN204757967U discloses a rail detector with dual wheel sets, in which a wheel body at the bottom of the rail detector is designed into a dual wheel body mechanism rotating in a universal manner, so that the wheel body contacting with a rail and the wheel body contacting with the ground are combined together, which is convenient for installation and movement, but during the detection process, the dual wheel body mechanism rotating in a universal manner easily causes the vehicle body to swing, which affects the accuracy of the detection result.

The invention patent with publication number CN107839715A discloses a detecting instrument applied to the plane-concave degree of a railway steel rail, which can detect the plane-concave degree of the railway steel rail and the defects of the steel rail by adding an ultrasonic flaw detector device, and solves the problem that a detector is inconvenient to detect at night by arranging an illuminating lamp. The patent publication No. CN113120029A discloses an ultrasonic device for nondestructive testing of a steel rail, wherein a cleaning brush is arranged at the front end of the device, so that foreign matters attached to the surface of the steel rail can be cleaned, and the testing accuracy is improved. However, the above inventions are all single-row wheel detectors pushed by manpower, which require manual work to keep left-right balance, and the labor intensity is high, and the left-right roll can affect the detection result.

The steel rail detector in the prior art generally utilizes a single-row wheel pushed by manpower or a double-row wheel pushed by electric power, and utilizes an ultrasonic probe which is tightly attached to a steel rail after a probe bracket is put down to detect flaws. The double-row wheel detector has the advantages of heavy weight, difficulty in carrying and single-person operation and high manufacturing cost. The single-row wheel detector needs to be pushed by manpower, and the efficiency is low when the single-row wheel detector walks on the steel rail; meanwhile, when the single-row detector introduced in the invention patent works, the left and right balance needs to be manually kept, particularly in the section with the slope at the turning part, the labor intensity is higher, and the detection precision is influenced by the left and right side inclination.

Disclosure of Invention

In order to overcome the defects in the prior art, the invention provides the self-balancing ultrasonic railway steel rail detection trolley, which utilizes the self-balancing structure to realize that the ultrasonic railway steel rail detection trolley is always in a self-balancing state in the working process, thereby reducing the labor intensity of detection personnel and improving the detection accuracy and the detection efficiency.

In order to achieve the purpose, the technical scheme provided by the invention is as follows: the utility model provides a self-balancing ultrasonic wave railway rail detects dolly, includes power, detector display, base, box, pull rod, action wheel, leading wheel, ultrasonic transducer I, II, install ultrasonic transducer I, II on probe support frame I, II that the box both sides set up side by side, the detector display is installed by the pedestal the upper portion of box, action wheel, leading wheel are installed the bottom of box. The box body is divided into an upper layer and a lower layer, the upper layer is provided with an automatic balancing device, the lower layer is a water tank, the rear part and the bottom of the water tank are provided with a water inlet and a water outlet, and the water outlet is connected to a spray head in the front part of the probe support frame II through a hose; the automatic balancing device comprises a gyroscope angle sensor, a balancing water tank electric push rod and two guide rails I and II, wherein the two guide rails I and II are parallelly installed on the upper surface of the water tank, two sliders I and II are installed at the bottom of the balancing water tank and are in sliding contact with the upper surfaces of the two guide rails I and II respectively, the gyroscope angle sensor is horizontally installed on the upper surface of the front part of the central line of the water tank, the vertical axis of the gyroscope angle sensor and the symmetrical surface of the detection trolley are located on the same plane, one end of the balancing water tank electric push rod is installed in the middle of one side of the balancing water tank, the other end of the balancing water tank electric push rod is installed on the inner side of a side plate of the automatic balancing device, the gyroscope angle sensor is used for monitoring the left-right tilting direction and amplitude of the detection trolley and sending monitoring signals to the balancing water tank electric push rod, and the balancing water tank electric push rod generates stretching action to enable the balancing water tank to follow the guide rails I and II, And II, moving in the left-right direction to adjust the integral gravity center of the detection trolley, so that the aim of automatic balance of the detection trolley is fulfilled.

Further, the gyroscope angle sensor is connected with the balance water tank electric push rod through a lead; and the ultrasonic probes I and II are connected with the detector display through leads.

Further, a screw motor is composed of a screw and a motor, the end of the screw motor and the other end of the screw are respectively installed on the inner sides of the upper portions of the two side plates of the automatic balancing device, and a nut installed on the upper portion of the balancing water tank is matched with the screw.

The invention has the beneficial effects that: the gyroscope angle sensor is used for detecting the left and right side-tipping direction and amplitude of the detection trolley, sending a signal to the automatic balancing device for adjustment, further controlling the moving direction and the moving speed of the balancing water tank and promoting the detection trolley to recover to a balanced state. The posture of the detection trolley can be corrected at the moment that the vehicle heels, the self-balancing ultrasonic railway defect detection trolley can be kept balanced within a certain range during operation, the detection accuracy is guaranteed, and the working strength of workers is reduced.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings needed in the embodiments will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings without creative efforts.

FIG. 1 is a schematic structural diagram of a self-balancing ultrasonic railway rail inspection trolley;

FIG. 2 is a front view of the self-balancing ultrasonic rail inspection trolley;

FIG. 3 is a top view of a push rod self-balancing water tank;

FIG. 4 is a cross-sectional view of a push-rod self-balancing tank A-A;

FIG. 5 is a top view of a screw-type self-balancing water tank;

FIG. 6 is a cross-sectional view of a lead screw self-balancing water tank B-B;

FIG. 7 is a schematic view of the driving wheel;

FIG. 8 is a schematic view of the distribution of the magnets of the driving pulley body;

FIG. 9 is a schematic structural view of the driving pulley body;

FIG. 10 is a schematic view of the structure of the guide wheel;

FIG. 11 is a schematic diagram of the distribution of magnets in the wheel body of the guide wheel;

fig. 12 is a schematic view of the structure of the guide wheel body.

In the above figures, 1-detector display, 2-base, 3-box, 4-brace, 5 '-probe holder i, ii, 6-drive wheel electric putter, 7-drive wheel, 8-guide wheel electric putter, 9-brace, 10-guide wheel, 11' -ultrasonic probe i, ii, 12-gyroscope angle sensor, 13-balance water tank, 14-balance water tank electric putter, 15 '-guide rail i, ii, 16-nozzle, 17-lead screw, 18-nut, 19-lead screw motor, 20-base plate, 21-electric hub, 22-magnet, 23' -slider i, ii, 24-water tank, 25-automatic balancing device, 26-water inlet, 27-water outlet.

Detailed Description

In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention is described in further detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.

Example 1

Referring to fig. 1 to 4, embodiment 1 provides a self-balancing ultrasonic railway rail detection trolley, which includes a power supply, a detector display 1, a base 2, a box 3, a driving wheel 7, a guide wheel 10, and ultrasonic probes i and ii (11 and 11'). The box body 3 is divided into an upper layer and a lower layer, the upper layer is provided with an automatic balancing device 25, and the lower layer is a water tank 24. A water inlet 26 and a water outlet 27 are respectively formed in the rear portion and the bottom portion of the water tank 24, the water outlet 27 is connected to a spray head 16 at the front portion of the probe support frame ii 5 'through a hose, and the automatic balancing device 25 comprises a gyroscope angle sensor 12, a balancing water tank 13, a balancing water tank electric push rod 14 and two guide rails i and ii (15 and 15'). The two guide rails i and ii (15 and 15 ') are installed on the upper surface of the water tank 24 in parallel, and the balance water tank 13 is in sliding contact with the upper surfaces of the guide rails i and ii (15 and 15 ') through two sliders i and ii (23 and 23 ') at the bottom. The gyroscope angle sensor 12 is horizontally arranged on a central line of the upper surface of the front part of the water tank 24, the electric push rod 14 of the balance water tank is arranged in the middle of one side of the balance water tank 13, and the other end of the electric push rod is fixed with the inner side of a side plate corresponding to the automatic balancing device 25. The guide wheel 10 is a universal wheel, is cylindrical in shape and has no flange, and is internally provided with a magnet 22 which is adsorbed on a steel rail through magnetic force. The driving wheel 7 is composed of an electric hub 21 and a steel shell, the steel shell is cylindrical and has no flange, and a magnet 22 is arranged inside the steel shell and is adsorbed on a steel rail through magnetic force (see fig. 7-12).

The gyroscope angle sensor 12 is internally provided with a three-degree-of-freedom gyroscope which is horizontally arranged on a central line of the upper surface of the water tank 24, the bilateral symmetry plane of the gyroscope angle sensor 12 and the bilateral symmetry plane of the detection trolley are positioned on the same plane, the X, Y axis is respectively parallel to the bilateral symmetry plane and the front-back symmetry plane of the detection trolley, and the gyroscope angle sensor 12 is electrically connected with the electric push rod 14 of the balance water tank. The gyroscope angle sensor 12 is configured to detect the direction and the amplitude of the left and right heeling of the detection trolley in real time, and send an action signal to the balance water tank electric push rod 14, so that the balance water tank 13 moves in a reverse direction in the heeling direction along the guide rails i and ii (15 and 15') under the pushing and pulling of the balance water tank electric push rod 14, and the center of gravity of the detection trolley is adjusted, thereby achieving the purpose of balancing the detection trolley.

The balance water tank 13 can be regarded as a gravity block and used for adjusting the gravity center of the detection trolley, and water in the balance water tank 13 can be used for providing a lubricating medium for the detection trolley under special conditions as storage. The lower layer of the automatic balancing device 25 is a water tank 24 which is a hollow cavity for storing water. The top of the box body 3 is provided with a detector display 1 and an external power supply, and the external power supply is connected with the gyroscope angle sensor 12, the electric push rod 14 of the balance water tank and the electric hub 21 in the driving wheel 7 through wires to provide electric energy for the electric hub. Action wheel electric putter 6, leading wheel electric putter 8 are used for being connected of action wheel 7, leading wheel 10 and automobile body respectively, and after the electric putter release, ultrasonic probe I, II (11, 11') level is a little higher than the level after action wheel 7, leading wheel 10 pack up.

The working process of the detection trolley in the embodiment 1 is as follows:

before the detection trolley is used, the driving wheel 7 and the guide wheel 10 are firstly retracted, the detection trolley is arranged on a steel rail, the probe support frames I and II (5 and 5 ') are released to be horizontally placed right above the steel rail, the ultrasonic probes I and II (11 and 11') on the probe support frames I and II (5 and 5 ') are fixed above the steel rail, so that accurate and efficient detection is facilitated, when the self-balancing ultrasonic railway steel rail detection trolley runs on a single rail of the steel rail and is inclined leftwards and rightwards, the gyroscope angle sensor 12 can detect the left and right inclination direction and the inclination amplitude of the detection trolley and transmit signals to the electric push rod 14 of the balance water tank and control the expansion and contraction of the electric push rod 14 of the balance water tank, so that the balance water tank 13 reversely moves towards the inclination direction along the guide rails I and II (15 and 15') under the push-pull action of the electric push rod 14 of the balance water tank, so as to adjust the gravity center position of the detection trolley and further enable the detection trolley to recover the balance state. When self-balancing ultrasonic wave railway defect detection dolly does not use, can pack up and fix with bolt tightening with action wheel 7, leading wheel 10 release probe support frame I, II (5, 5').

When promoting subaerial, put down magnetic force rail wheel through electric putter, support ground is kept away from to the testing trolley bottom to pack up probe support frame I, II (5, 5 '), fix on the automobile body, play certain guard action to ultrasonic probe I, II (11, 11') and automobile body lower part, be convenient for again the removal and the placing of testing trolley. When promoting on the rail, can put through action wheel electric putter 6, leading wheel electric putter 8 and make action wheel 7, leading wheel 10 pack up to release probe support frame I, II (5, 5 '), make ultrasonic probe I, II (11, 11 ') settle directly over the rail, make ultrasonic probe I, II (11, 11 ') of detection dolly bottom are close enough from the rail distance, in order to guarantee the accuracy of detection.

When not in use, the support rod 9 beside can be supported to prevent the trolley from tipping, thereby being convenient for storage and reducing the occupied space.

Example 2

Referring to fig. 1 to 2 and 5 to 6, the self-balancing device of this embodiment 2 is different from that of embodiment 1, specifically, the electric push rod device is replaced by a lead screw nut device, the lead screw nut device includes a lead screw motor 19, a nut 18 and a lead screw 17, an end of the lead screw 17 is connected with the motor to form the lead screw motor 19, an end of the lead screw motor 19 and another end of the lead screw 17 are respectively installed inside upper portions of two side plates of the automatic balancing device 25, and a central portion of an upper portion of the balancing water tank 13 is fixedly connected with the nut 18 matched with the lead screw 17.

The gyroscope angle sensor 12 is used for monitoring the direction and the amplitude of the left and right heeling of the detection trolley and sending a detection signal to the screw motor 19, the screw motor 19 drives the screw 17 to rotate in the forward and reverse directions, so that the nut 18 drives the balance water tank 13 to move left and right along the guide rails I and II (15 and 15'), the gravity center of the whole detection trolley is adjusted, and the purpose of automatic balance of the detection trolley is achieved.

The working process of the detection trolley in the embodiment 2 is as follows:

before the detection trolley is used, the driving wheel 7 and the guide wheel 10 are firstly folded, the detection trolley is placed on a steel rail, the probe support frames I and II (5 and 5 ') are horizontally placed right above the steel rail, the ultrasonic probes I and II (11 and 11 ') on the probe support frames I and II (5 and 5 ') are fixed above the steel rail, so that accurate and effective detection is facilitated, when the detection trolley is in a left-right side-tipping state during running on a single rail, the gyroscope angle sensor 12 detects the left-right side-tipping direction and the tipping amplitude of the detection trolley, a detection signal is sent to the lead screw motor 19, the lead screw motor 19 is controlled to rotate clockwise or anticlockwise according to a certain rotating speed to control the rotating speed and direction of the lead screw 17, the lead screw 17 is in threaded connection with the nut 18, and the rotary motion of the lead screw 17 can be converted into the linear motion of the nut 18 and the balance water tank 13, so as to move the balancing water tank 13 in the opposite direction of the lateral direction to adjust the position of the center of gravity of the detection trolley, and further to restore the detection trolley to a balanced state. When the detection dolly does not use, can with action wheel 7, leading wheel 10 release, pack up and fix with bolt tightening with probe support frame I, II (5, 5'), be convenient for place or remove.

The foregoing has described the general principles, essential features, and advantages of the invention. It will be understood by those skilled in the art that the present invention is not limited to the embodiments described above, which are described in the specification and illustrated only to illustrate the principle of the present invention, but that various changes and modifications may be made therein without departing from the spirit and scope of the present invention, which fall within the scope of the invention as claimed.

Claims

1. The utility model provides a self-balancing ultrasonic wave railway rail detects dolly, includes power, detector display (1), base (2), box (3), pull rod (4), action wheel (7), leading wheel (10), ultrasonic probe I, II (11, 11 '), install ultrasonic probe I, II (11, 11 ') on the probe support frame I that box (3) both sides set up, II (5, 5 ') side by side, install detector display (1) by base (2) the upper portion of box (3), action wheel (7), leading wheel (10) are installed the bottom of box (3), its characterized in that: the box body (3) is divided into an upper layer and a lower layer, an automatic balancing device (25) is arranged on the upper layer, a water tank (24) is arranged on the lower layer, a water inlet (26) and a water outlet (27) are machined in the rear part and the bottom part of the water tank (24), and the water outlet (27) is connected to a spray head (16) in the front part of a probe support frame II (5') through a hose; the automatic balancing device (25) comprises a gyroscope angle sensor (12), a balancing water tank (13), a balancing water tank electric push rod (14) and two guide rails I, II (15, 15 '), wherein the two guide rails I, II (15, 15') are installed on the upper surface of the water tank (24) in parallel, two sliders I, II (23, 23 ') are installed at the bottom of the balancing water tank (13) and are respectively in sliding contact with the upper surfaces of the two guide rails I, II (15, 15'), the gyroscope angle sensor (12) is horizontally installed on a central line of the upper surface of the front part of the water tank (24), the vertical axis of the gyroscope angle sensor (12) and the symmetrical surface of the detection trolley are located on the same plane, one end of the balancing water tank electric push rod (14) is installed in the middle of one side of the balancing water tank (13), and the other end of the balancing water tank electric push rod is installed on the inner side of a side plate of the automatic balancing device (25), the gyroscope angle sensor (12) is used for detecting the left and right side tilting direction and amplitude of the detection trolley and sending an action signal to the water tank electric push rod (14), so that the balance water tank (13) is pushed by the balance water tank electric push rod (14), the balance water tank (13) moves reversely in the tilting direction along the guide rails I and II (15 and 15'), the integral gravity center of the detection trolley is adjusted, and the purpose of balancing the detection trolley is achieved.

2. The self-balancing ultrasonic railway steel rail detection trolley according to claim 1, characterized in that: the gyroscope angle sensor (12) is connected with the balance water tank electric push rod (14) through a lead; the ultrasonic probes I and II (11 and 11') are connected with the detector display (1) through a lead.

3. The self-balancing ultrasonic railway steel rail detection trolley according to claim 1, characterized in that: the screw motor (19) is formed by the screw (17) and the motor, the end part of the screw motor (19) and the other end of the screw (17) are respectively arranged on the inner sides of the upper parts of two side plates of the automatic balancing device (25), and a nut (18) arranged on the upper part of the balancing water tank (13) is matched with the screw (17).