Magnetic suspension contact rail measuring instrument

Abstract

The invention discloses a magnetic suspension contact rail measuring instrument which comprises a rack, a positioning mechanism and a measuring mechanism, the measuring instrument is fixed to an F rail through the positioning mechanism so as to achieve measuring and positioning of the measuring instrument, a first supporting part is located on one side of a current collecting face of a contact rail, and a first laser displacement sensor is arranged on the first supporting part in a sliding mode. Therefore, the pull-out value and the rail surface angle of the contact rail can be measured. Correspondingly, the second supporting part is located below the contact rail, and the second laser displacement sensor is arranged on the second supporting part in a sliding mode so as to measure the guide height value of the contact rail. The first laser displacement sensor and the second laser displacement sensor are arranged in a sliding mode, multi-point measurement is facilitated, multiple sets of data are obtained, and the accuracy of the measurement result is further improved. The rack provides stable support for the positioning mechanism and the measuring mechanism, a sectional combined structure is adopted, one end of the positioning mechanism is connected with the first supporting part, a protective cover is prevented from affecting measurement of the contact rail, and the overall structure of the measuring instrument is simplified.

Description

Technical Field

[0001] The invention relates to the technical field of measuring instruments, in particular to a magnetic suspension contact rail measuring instrument. Background Art

[0002] During the maintenance and inspection process, the maglev train can only operate safely if the various technical parameters of the contact rail are within the standard range. The contact rail height and pull-out value data are an important task in the contact rail inspection and maintenance, and are the primary conditions for the safe operation of the maglev train. The contact rail height data is 650±2mm, the pull-out value is 950±1mm, and the pitch angle is ±6.5°. Since the contact rails of the maglev express are designed on both sides of the bridge, they are affected by the terrain and space, and maintenance personnel are often required to lie on the bridge for measurement. In addition, a simple measuring device made by hand is used. This simple device uses a mechanical indication method and manual reading for measurement. It has the disadvantages of insufficient stability, low measurement accuracy, and large human deviation. It takes a long time and is not only inefficient but also has a high safety risk.

[0003] Since the maglev express line was put into operation, it has been running smoothly and safely without any hidden dangers. In order to continuously improve and enhance, a protective cover is now installed on the contact rail to ensure that the current receiving surface of the contact rail is in a dry operating state, to prevent erosion by wind, frost, rain, snow and the impact of freezing disasters, and to reduce uneven wear of the current receiving shoe.

[0004] The installation of a 10cm extended protective cover on the original contact rail increases the difficulty of measuring and repairing the contact rail's professional guide height and pull-out values. At present, the efficiency of measuring parameters such as pull-out, guide height and rail surface angle is relatively low, and the measurement process is complicated. For example, measuring guide height, pull-out value and rail surface angle requires personnel to manually adjust the corresponding ruler movement. In non-platform areas, maintenance personnel often need to lie on the bridge to measure, which is relatively difficult. As a result, it takes too long to measure each custom point, further increasing the safety risk factor of maintenance. Summary of the invention

[0005] The purpose of the present invention is to provide a magnetic suspension contact rail measuring instrument to solve the problems existing in the above-mentioned prior art, improve the accuracy and efficiency of contact rail measurement, and adopt non-contact measurement to improve the safety factor of measurement and maintenance.

[0006] To achieve the above object, the present invention provides the following solutions:

[0007] The present invention provides a magnetic suspension contact rail measuring instrument, comprising:

[0008] A frame, the frame comprising a first supporting portion and a second supporting portion, the first supporting portion is connected to the second supporting portion, and an angle is formed between the first supporting portion and the second supporting portion;

[0009] A positioning mechanism, one end of which is connected to the first supporting portion, and the other end of which can be fixed on the F rail to achieve measurement positioning; when the positioning mechanism is fixed on the F rail, the first supporting portion is located on one side of the current receiving surface of the contact rail, and the second supporting portion is located below the contact rail;

[0010] A measuring mechanism, the measuring mechanism comprising a first laser displacement sensor and a second laser displacement sensor, the first laser displacement sensor being slidably disposed on the first support portion along a height direction of the contact rail; the second laser displacement sensor being slidably disposed on the second support portion along a width direction of the contact rail; the first laser displacement sensor and the second laser displacement sensor being both capable of emitting laser beams to measure the distance to the contact rail.

[0011] Preferably, the positioning mechanism has a first positioning surface and a second positioning surface, the intersection of the first positioning surface and the second positioning surface is a positioning reference line, and the positioning reference line is against the bottom edge of the F rail to achieve measurement positioning of the magnetic suspension contact rail measuring instrument.

[0012] Preferably, the positioning mechanism has an adsorption element so that the positioning mechanism is adsorbed and fixed to the bottom of the F rail.

[0013] Preferably, the adsorption element is a magnet;

[0014] The positioning mechanism is a frame structure, the number of the adsorption elements is multiple, and the adsorption elements are arranged in an array.

[0015] Preferably, the first laser displacement sensor and the second laser displacement sensor are both connected to a driver to drive the first laser displacement sensor and the second laser displacement sensor to reciprocate.

[0016] Preferably, a guide rail assembly is provided between the first supporting part and the first laser displacement sensor, and between the second supporting part and the second laser displacement sensor.

[0017] Preferably, the number of the first laser displacement sensors is two groups, and the two first laser displacement sensors are arranged along the reciprocating sliding direction thereof.

[0018] Preferably, the first support portion is arranged parallel to the vertical direction, the second support portion is arranged parallel to the horizontal direction, the first support portion is connected to the second support portion by a transition rod, and the transition rod is arranged obliquely.

[0019] Preferably, the magnetic levitation contact rail measuring instrument also includes a controller and a battery. The controller is communicatively connected with the measuring mechanism, the controller is fixed on the frame, and the controller has a display screen and operation buttons; the battery is built into the frame, and the battery is electrically connected to the controller.

[0020] Preferably, the frame is further provided with a first handle and a second handle, the first handle is provided at the top of the first supporting portion, and the second handle is provided at the middle of the first supporting portion.

[0021] Compared with the prior art, the present invention achieves the following technical effects: the magnetic suspension contact rail measuring instrument of the present invention comprises a frame, a positioning mechanism and a measuring mechanism, the frame comprises a first supporting part and a second supporting part, the first supporting part is connected to the second supporting part, and an angle is formed between the two; one end of the positioning mechanism is connected to the first supporting part, and the other end of the positioning mechanism can be fixed on the F rail to achieve measurement positioning; when the positioning mechanism is fixed on the F rail, the first supporting part is located on one side of the current receiving surface of the contact rail, and the second supporting part is located below the contact rail; the measuring mechanism comprises a first laser displacement sensor and a second laser displacement sensor, the first laser displacement sensor can be slidably arranged on the first supporting part along the height direction of the contact rail; the second laser displacement sensor can be slidably arranged on the second supporting part along the width direction of the contact rail; the first laser displacement sensor and the second laser displacement sensor can both emit laser beams to measure the distance to the contact rail.

[0022] The magnetic suspension contact rail measuring instrument of the present invention is fixed on the F rail by a positioning mechanism to realize the measurement positioning of the measuring instrument. The first support part is located on the current receiving surface side of the contact rail, and the first laser displacement sensor is slidably arranged on the first support part to realize the measurement of the pull-out value and the rail surface angle of the contact rail; correspondingly, the second support part is located below the contact rail, and the second laser displacement sensor is slidably arranged on the second support part to measure the conductance value of the contact rail. The first laser displacement sensor and the second laser displacement sensor are both slidably arranged to facilitate multi-point measurement and obtain multiple sets of data to further improve the accuracy of the measurement results. The frame of the present invention provides stable support for the positioning mechanism and the measuring mechanism, and adopts a segmented combined structure. One end of the positioning mechanism is connected to the first support part to prevent the protective cover from affecting the measurement of the contact rail. At the same time, the overall structure of the measuring instrument is simplified, and the convenience of operation of the measuring instrument is improved. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0024] Figure 1 A schematic diagram of the axonometric structure of the magnetic suspension contact rail measuring instrument disclosed in an embodiment of the present invention;

[0025] Figure 2 Schematic diagram of the axonometric structure at other angles of the magnetic suspension contact rail measuring instrument disclosed in the embodiment of the present invention;

[0026] Figure 3 A schematic front view of a magnetic suspension contact rail measuring instrument disclosed in an embodiment of the present invention;

[0027] Figure 4 A schematic top view of a magnetic suspension contact rail measuring instrument disclosed in an embodiment of the present invention;

[0028] Figure 5 It is a schematic side view of the magnetic suspension contact rail measuring instrument disclosed in an embodiment of the present invention.

[0029] In the figure: 100, magnetic suspension contact rail measuring instrument;

[0030] 1. Frame; 101. First support portion; 102. Second support portion; 103. First handle; 104. Second handle;

[0031] 2. Positioning mechanism; 201. first positioning surface; 202. second positioning surface; 203. adsorption element;

[0032] 3. Measuring mechanism; 301. First laser displacement sensor; 302. Second laser displacement sensor; 303. Driver; 304. Protective housing; 305. Laser beam;

[0033] 4. Controller. DETAILED DESCRIPTION

[0034] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0035] The purpose of the present invention is to provide a magnetic suspension contact rail measuring instrument to solve the problems existing in the above-mentioned prior art, improve the accuracy and efficiency of contact rail measurement, and adopt non-contact measurement to improve the safety factor of measurement and maintenance.

[0036] In order to make the above-mentioned objects, features and advantages of the present invention more obvious and easy to understand, the present invention is further described in detail below with reference to the accompanying drawings and specific embodiments.

[0037] The present invention provides a magnetic suspension contact rail measuring instrument 100, please refer to Figure 1-Figure 5 , including a frame 1, a positioning mechanism 2 and a measuring mechanism 3, the frame 1 includes a first supporting part 101 and a second supporting part 102, the first supporting part 101 is connected to the second supporting part 102, and there is an angle between the two; one end of the positioning mechanism 2 is connected to the first supporting part 101, and the other end of the positioning mechanism 2 can be fixed on the F rail to achieve measurement positioning; when the positioning mechanism 2 is fixed on the F rail, the first supporting part 101 is located on the current receiving surface side of the contact rail, and the second supporting part 102 is located below the contact rail; the measuring mechanism 3 includes a first laser displacement sensor 301 and a second laser displacement sensor 302, along the height direction of the contact rail, the first laser displacement sensor 301 is slidably arranged on the first supporting part 101; along the width direction of the contact rail, the second laser displacement sensor 302 is slidably arranged on the second supporting part 102; the first laser displacement sensor 301 and the second laser displacement sensor 302 can both emit a laser beam 305 to measure the distance between the contact rail and the contact rail.

[0038] The magnetic suspension contact rail measuring instrument 100 of the present invention is fixed on the F rail by the positioning mechanism 2 to realize the measurement positioning of the measuring instrument. The first support part 101 is located on the current receiving surface side of the contact rail, and the first laser displacement sensor 301 is slidably arranged on the first support part 101 to realize the measurement of the pull-out value and the rail surface angle of the contact rail; correspondingly, the second support part 102 is located below the contact rail, and the second laser displacement sensor 302 is slidably arranged on the second support part 102 to measure the conductance value of the contact rail. The first laser displacement sensor 301 and the second laser displacement sensor 302 are both slidably arranged to facilitate multi-point measurement and obtain multiple sets of data to further improve the accuracy of the measurement results. The frame 1 of the present invention provides stable support for the positioning mechanism 2 and the measuring mechanism 3, and adopts a segmented combined structure. One end of the positioning mechanism 2 is connected to the first support part 101 to prevent the protective cover from affecting the measurement of the contact rail. At the same time, the overall structure of the measuring instrument is simplified and the convenience of operation of the measuring instrument is improved.

[0039] It needs to be explained here that the first laser displacement sensor 301 measures the distance between itself and the current receiving surface of the contact rail, and the second laser displacement sensor 302 measures the distance between itself and the bottom surface of the contact rail, and then the pull-out value, rail surface angle and guide height of the contact rail are obtained through calculation and analysis. These are common methods used by those skilled in the art and will not be elaborated here.

[0040] The positioning mechanism 2 has a first positioning surface 201 and a second positioning surface 202, and the intersection of the first positioning surface 201 and the second positioning surface 202 is a positioning reference line, and the positioning reference line is against the bottom edge of the F rail to achieve the measurement and positioning of the magnetic suspension contact rail measuring instrument 100. The intersection of the first positioning surface 201 and the second positioning surface 202 is against the F rail to perform measurement and positioning, and the positioning operation is convenient, which provides convenience for the measurement work.

[0041] In this specific embodiment, the positioning mechanism 2 has an adsorption element 203 so that the positioning mechanism 2 can be adsorbed and fixed to the bottom of the F rail. The adsorption and fixing method can further improve the operating convenience of the measuring instrument.

[0042] In practical applications, the adsorption element 203 is a magnet. In order to enhance the fixing effect, a strong magnetic steel, namely a neodymium iron boron magnet, can be used to ensure the measurement stability of the measuring instrument, thereby improving the working reliability of the measuring instrument. In other specific embodiments of the present invention, the adsorption element 203 can also use a suction cup or other adhesive structure to achieve positioning and fixing.

[0043] In other specific embodiments that can be realized by the present invention, the positioning mechanism 2 is a frame structure, which is conducive to reducing the overall weight of the measuring instrument, improving the portability of the measuring instrument, and providing convenience for the measurement work. The positioning mechanism 2 and the frame 1 can be made of aluminum alloy to further reduce the weight of the measuring instrument and improve the portability of the measuring instrument.

[0044] In practical applications, multiple adsorption elements 203 can be provided to enhance the positioning and fixing effect of the measuring instrument. The adsorption elements 203 are arranged in an array to improve the force uniformity of the measuring instrument, further ensure the stability of the measuring instrument, avoid dislocation of the measuring instrument during the measurement process, and ensure the accuracy of the measurement results.

[0045] Specifically, the first laser displacement sensor 301 and the second laser displacement sensor 302 are both connected to a driver 303 to drive the first laser displacement sensor 301 and the second laser displacement sensor 302 to reciprocate, thereby improving the degree of automation of the measuring mechanism 3, facilitating the measuring operation, and helping to reduce the labor burden of the measuring personnel.

[0046] In order to further improve the reciprocating motion accuracy of the first laser displacement sensor 301 and the second laser displacement sensor 302, a guide rail assembly is provided between the first support part 101 and the first laser displacement sensor 301, and between the second support part 102 and the second laser displacement sensor 302, to ensure the sliding accuracy of the first laser displacement sensor 301 and the second laser displacement sensor 302, thereby ensuring the measurement accuracy of the measuring instrument. In this specific embodiment, a protective shell 304 is provided on the frame 1, and the protective shell 304 is provided on the outside of the first laser displacement sensor 301 and the second laser displacement sensor 302 to protect the first laser displacement sensor 301 and the second laser displacement sensor 302, reduce the influence of external impurities on the first laser displacement sensor 301 and the second laser displacement sensor 302, and extend the service life of the measuring mechanism 3. The protective shell 304 has a through hole on the side facing the contact rail to ensure the smooth emission of the laser beam 305, and the through hole is a long hole to avoid affecting the reciprocating sliding of the first laser displacement sensor 301 and the second laser displacement sensor 302.

[0047] In this specific implementation, the number of the first laser displacement sensors 301 is two groups, and the two first laser displacement sensors 301 are arranged along the reciprocating sliding direction thereof to measure the pull-out value and the rail surface angle of the contact rail.

[0048] More specifically, the first support part 101 is arranged parallel to the vertical direction, and the second support part 102 is arranged parallel to the horizontal direction, which facilitates the measurement of the first laser displacement sensor 301 and the second laser displacement sensor 302. The first support part 101 is connected to the second support part 102 by a transition rod, and the transition rod is arranged at an angle, which is conducive to reducing the occupied space of the measuring instrument and improving the measurement convenience of the measuring instrument.

[0049] The magnetic suspension contact rail measuring instrument 100 of the present invention also includes a controller 4 and a battery. The controller 4 is connected to the measuring mechanism 3 for communication. The controller 4 is fixed on the frame 1. The controller 4 has a display screen and operation buttons, which are convenient for the measurement personnel to operate and control. After the measuring instrument is positioned and fixed on the F rail, the measurement instrument can be controlled to perform automatic measurement using the operation buttons. The measurement personnel can monitor the measurement data using the display screen to improve the automation of the measuring instrument. The battery is built into the frame 1, and the battery is electrically connected to the controller 4 to ensure the endurance of the measuring instrument and further improve the working reliability of the measuring instrument.

[0050] In order to further improve the measuring effect of the measuring instrument, the controller 4 can also be equipped with a rail surface photography camera to take rail surface images at the problem location and save them for tracing and reference when needed later.

[0051] In order to facilitate carrying and measuring operations, the frame 1 is also provided with a first handle 103 and a second handle 104. The first handle 103 is arranged at the top of the first support part 101 and is a hollow structure. The second handle 104 is arranged in the middle of the first support part 101 and is a U-shaped rod structure with an opening facing the first support part 101, which further improves the operating convenience of the measuring instrument.

[0052] The magnetic levitation contact rail measuring instrument 100 of the present invention utilizes a plurality of high-precision laser displacement sensors, combined with a measuring mechanism 3 for automatic translation of the sensors, to drive the laser displacement sensors to collect data on the contour points of the current receiving surface of the contact rail and the lower end of the rail head, and can simultaneously measure and display the pull-out, guide height and rail surface angle values, replacing the traditional mechanical measuring ruler, thereby reducing the work of the measurer and the safety risk of personnel.

[0053] The present invention uses specific examples to illustrate the principles and implementation methods of the present invention. The above examples are only used to help understand the method and core ideas of the present invention. At the same time, for those skilled in the art, according to the ideas of the present invention, there will be changes in the specific implementation methods and application scope. In summary, the content of this specification should not be understood as limiting the present invention.

Claims

1. A magnetic suspension contact rail measuring instrument, It is characterized in that include: A frame, the frame comprising a first supporting portion and a second supporting portion, the first supporting portion is connected to the second supporting portion, and an angle is formed between the first supporting portion and the second supporting portion; A positioning mechanism, one end of which is connected to the first supporting portion, and the other end of which can be fixed on the F rail to achieve measurement positioning; when the positioning mechanism is fixed on the F rail, the first supporting portion is located on one side of the current receiving surface of the contact rail, and the second supporting portion is located below the contact rail; A measuring mechanism, the measuring mechanism comprising a first laser displacement sensor and a second laser displacement sensor, the first laser displacement sensor being slidably disposed on the first support portion along a height direction of the contact rail; the second laser displacement sensor being slidably disposed on the second support portion along a width direction of the contact rail; the first laser displacement sensor and the second laser displacement sensor being both capable of emitting laser beams to measure the distance to the contact rail.

2. The magnetic suspension contact rail measuring instrument according to claim 1, Features: The positioning mechanism has a first positioning surface and a second positioning surface, the intersection of the first positioning surface and the second positioning surface is a positioning reference line, and the positioning reference line is against the bottom edge of the F rail to achieve measurement positioning of the magnetic suspension contact rail measuring instrument.

3. The magnetic suspension contact rail measuring instrument according to claim 1, Features: The positioning mechanism has an adsorption element so that the positioning mechanism is adsorbed and fixed to the bottom of the F rail.

4. The magnetic suspension contact rail measuring instrument according to claim 3, Features: The adsorption element is a magnet; The positioning mechanism is a frame structure, the number of the adsorption elements is multiple, and the adsorption elements are arranged in an array.

5. The magnetic suspension contact rail measuring instrument according to claim 1, Features: The first laser displacement sensor and the second laser displacement sensor are both connected to a driver to drive the first laser displacement sensor and the second laser displacement sensor to reciprocate.

6. The magnetic suspension contact rail measuring instrument according to claim 5, Features: A guide rail assembly is disposed between the first supporting portion and the first laser displacement sensor, and between the second supporting portion and the second laser displacement sensor.

7. The magnetic suspension contact rail measuring instrument according to claim 5 or 6, Features: The number of the first laser displacement sensors is two groups, and the two first laser displacement sensors are arranged along the reciprocating sliding direction thereof.

8. The magnetic suspension contact rail measuring instrument according to claim 1, Features: The first support portion is arranged parallel to the vertical direction, the second support portion is arranged parallel to the horizontal direction, the first support portion is connected to the second support portion by a transition rod, and the transition rod is arranged obliquely.

9. The magnetic suspension contact rail measuring instrument according to any one of claims 1 to 6, Features: It also includes a controller and a battery. The controller is communicatively connected with the measuring mechanism, the controller is fixed on the frame, and the controller has a display screen and operation buttons; the battery is built into the frame, and the battery is electrically connected to the controller.

10. The magnetic suspension contact rail measuring instrument according to claim 1, Features: The frame is also provided with a first handle and a second handle, wherein the first handle is provided at the top of the first supporting portion, and the second handle is provided at the middle of the first supporting portion.

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