Digital measuring ruler for track inductor plate

Abstract

The utility model relates to a kind of digital display measuring scale for track induction plate, including ruler body, the support for being used to abut with steel rail is provided at the both ends of ruler body, the top of ruler body is installed with scale, the scale is set along the length direction of ruler body and extends, capacitive gage is movably installed on ruler body, and reciprocating linear displacement is made along the ruler body, display table is integrally connected with the top of capacitive gage, locking knob is penetrated capacitive gage and abuts with ruler body.Collecting together with measurement and display, with the advantages of high measurement accuracy, low power consumption, long service life, low cost and so on, completely replace mechanical induction plate measuring scale, the capacitive gage measurement technology is used, can set "zero" at any position, can effectively overcome the error caused by ruler body deformation, overall weight is light, convenient to carry.

Description

Technical Field

[0001] This utility model relates to the field of track detection technology, and in particular to a digital display measuring ruler for track sensing plates. Background Technology

[0002] The induction plate is a core component of a linear motor rail transit system. It generates traction or levitation force through interaction with electromagnets, enabling contactless train operation. Specifically, the linear motor rail transit system uses a linear induction motor for traction. Its structure involves unfolding a rotary motor into a linear configuration, with the stator (primary coil) mounted on the vehicle's bogie and the rotor (secondary coil) transformed into an induction plate laid in the middle of the track. The vehicle generates power through electromagnetic induction between the onboard induction coil and the induction plate, propelling the train. Theoretically, the smaller the distance between the induction plate and the coil, the higher the efficiency; however, a gap is necessary. This requires the induction plate to be precisely installed according to design requirements, and periodic measurements are required during operation and maintenance. Any changes in the gap must be adjusted promptly. Linear induction motors have advantages such as low vehicle height, light weight, low operating noise, and strong ability to navigate small-radius curves and climb slopes, leading to their widespread application both domestically and internationally.

[0003] Currently, static inspection of subway track geometry parameters mainly relies on manual track gauge checks and automatic track inspection equipment. The inspection of contact rails and sensor plates primarily uses mechanical, specialized measuring rulers. These rulers are simple in structure, inexpensive, portable, and have a long service life, making them widely used in the field. However, these mechanical measuring rulers have low accuracy, and in low-light conditions at night, operators are prone to misreading data, leading to human error. An existing similar utility model patent, the "Sensor Plate Detection Ruler" (patent number ZL200720190264.3), uses two sets of grating rulers installed at both ends of the corresponding sensor plate to simultaneously measure the sensor plate's data. The measurement data is then transmitted via wired connection to a data box for display and storage. However, its structure is more complex, costly, and cumbersome to operate, making it extremely inconvenient for field use. The invention patent "A Comprehensive Inspection Instrument and Method for Contact Rail, Induction Plate, and Track Static Geometric Parameters" (Patent No.: ZL202510028947.1) uses a laser scanner to measure the induction plate. This is an induction plate detection device mounted on a track inspection instrument. While it can measure track geometric parameters and induction plate parameters, the laser scanner is expensive, and its high measuring arm and long cantilever cause significant swaying during inspection, affecting measurement accuracy. Based on these existing problems with induction plate measurement, further improvements are needed. Utility Model Content

[0004] Therefore, it is necessary to provide a digital measuring ruler for track induction plates to address the above problems.

[0005] A digital measuring ruler for a track induction plate includes a ruler body with supports at both ends for contacting the rail. A scale is mounted on the top of the ruler body, extending along the length of the ruler body. A grating scale is movably mounted on the ruler body and performs reciprocating linear displacement along the ruler body. A display is integrated with the top of the grating scale. A locking knob passes through the grating scale and abuts against the ruler body.

[0006] Preferably, the display table integrates a communication module.

[0007] Preferably, the communication module is a Bluetooth module, a WIFI module, a ZiBee module, or a LoRa module.

[0008] Preferably, the grating ruler includes a housing, an interface, a measuring rod, and a measuring head. The measuring head is connected to the housing via the measuring rod. The housing is movably mounted on the ruler body. A locking knob passes through the housing. The interface is electrically connected to the measuring head and the display meter.

[0009] Preferably, the ruler body is made of aluminum alloy.

[0010] Preferably, a support pad is provided on the side of the support that abuts against the rail.

[0011] The advantages of this utility model are: it integrates measurement and display, and has the advantages of high measurement accuracy, low power consumption, long life and low cost. It completely replaces the mechanical induction plate measuring ruler. The capacitive grating measurement technology adopted can set the "zero position" at any position, which can effectively overcome the error caused by the deformation of the ruler body. It is lightweight and easy to carry. Attached Figure Description

[0012] Figure 1 This is a front view schematic diagram of a digital measuring ruler for a track induction plate according to one embodiment;

[0013] Figure 2 A top view schematic diagram of a digital display measuring ruler for a track induction plate;

[0014] Figure 3 This is a schematic diagram of the grating ruler structure;

[0015] Figure 4 This is a schematic diagram of the table structure. Detailed Implementation

[0016] To make the above-mentioned objects, features, and advantages of this utility model more apparent and understandable, the specific embodiments of this utility model will be described in detail below with reference to the accompanying drawings. Many specific details are set forth in the following description to provide a full understanding of this utility model. However, this utility model can be implemented in many other ways different from those described herein, and those skilled in the art can make similar modifications without departing from the spirit of this utility model. Therefore, this utility model is not limited to the specific embodiments disclosed below.

[0017] It should be noted that when an element is referred to as being "fixed to" or "set on" another element, it can be directly on the other element or there may be an intervening element. When an element is considered to be "connected to" another element, it can be directly connected to the other element or there may be an intervening element. The terms "vertical," "horizontal," "left," "right," and similar expressions used herein are for illustrative purposes only and do not represent the only possible implementation.

[0018] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention pertains. The terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. The term "and / or" as used herein includes any and all combinations of one or more of the associated listed items.

[0019] like Figures 1-2As shown, a digital measuring ruler for a track induction plate includes a ruler body 1. Supports 2 are provided at both ends of the ruler body 1 for contacting with rails 100. A scale 3 is mounted on the top of the ruler body 1, extending along the length of the ruler body 1. A grating scale 4 is movably mounted on the ruler body 1 and reciprocates linearly along the ruler body 1. A display 5 is integrated with the top of the grating scale 4. A locking knob 6 passes through the grating scale 4 and abuts against the ruler body 1. Specifically, the ruler body 1 is straight, spanning between two rails 100, and abuts against the rails 100 via the supports 2. The supports 2 are made of insulating material to ensure that the track circuit of the two rails 100 is not short-circuited during measurement. The scale 3, made of stainless steel, is mounted on the top of the ruler body 1, with bidirectional markings from 0-300mm. Its zero point is located at the center of the ruler body 1, facilitating the determination of the measurement position of the induction plate 200. The capacitive grating ruler 4 is a non-contact, high-precision measuring device that uses capacitive sensing to measure displacement or angle. Its core function is to convert mechanical displacement into a recognizable electrical signal and optimize measurement accuracy through a closed-loop feedback mechanism. We integrate the capacitive grating ruler 4 onto the ruler body 1 to measure the edge position and height of the sensing plate 200. Simultaneously, we integrate the display meter 5 with the capacitive grating ruler 4, allowing the measured data to be displayed in real-time on the display meter 5, providing an excellent user experience. In use, the ruler body 1 is placed on the two steel rails 100 of the track. The capacitive grating ruler 4 is moved to the measurement position according to the installation of the sensing plate 200, and the horizontal value (distance from the sensing plate to the adjacent measuring rail surface) of the sensing plate 200 can be read. Moving the capacitive grating ruler 4 along the ruler body 1 allows for the measurement of the horizontal value at different positions of the sensing plate 200. When it is necessary to fix the measurement data at a specific position of the sensing plate 200, the capacitive grating ruler 4 can be locked in that position using the locking knob 6 for continuous measurement. The entire fixture has the advantages of high measurement accuracy, low power consumption, long life and low cost. It completely replaces the mechanical induction plate measuring ruler. The capacitive grating measurement technology can set the "zero position" at any position, which can effectively overcome the error caused by the deformation of the ruler. It is lightweight and easy to carry.

[0020] like Figure 4 As shown, the display 5 integrates a communication module 7, which wirelessly transmits the measured data to the user's laptop for subsequent data analysis. The communication module is powered by a separate 3V button battery, and the communication module 7 reads the measurement data from the grating scale through a transmission interface.

[0021] Specifically, the communication module 7 is a Bluetooth module, a WIFI module, a ZiBee module, or a LoRa module.

[0022] like Figure 3As shown, the scale 4 includes a housing 41, an interface 42, a measuring rod 43, and a measuring head 44. The measuring head 44 is connected to the housing 41 via the measuring rod 43. The housing 41 is movably mounted on the scale body 1. A locking knob 6 passes through the housing 41. The interface 42 is electrically connected to the measuring head 44 and the display 5. Specifically, in use, the measuring head 44 is moved to the measurement position according to the installation of the sensing plate 200. The power button on the housing 41 is turned on, and the measuring head 44 can send information to the display 5 through the interface 42. The user can then read the horizontal value (distance from the sensing plate to the adjacent measuring track surface) of the sensing plate 200 on the display screen of the display 5.

[0023] Specifically, the ruler body 1 is made of aluminum alloy, which is lightweight and easy to carry.

[0024] like Figure 1 As shown, a support pad 21 is provided on the side of the support 2 that abuts against the rail 100 to ensure the close contact and wear resistance of the support 2 when it contacts the rail.

[0025] The embodiments described above are merely illustrative of several implementations of this utility model, and while the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of the utility model patent. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of this utility model, and these all fall within the protection scope of this utility model. Therefore, the protection scope of this utility model patent should be determined by the appended claims.

Claims

1. A digital measuring ruler for a track induction plate, characterized in that: The device includes a ruler body with supports at both ends for contact with the rails. A scale is mounted on the top of the ruler body, extending along the length of the ruler body. A grating scale is movably mounted on the ruler body and performs reciprocating linear displacement along the ruler body. A display is integrated with the top of the grating scale. A locking knob passes through the grating scale and contacts the ruler body.

2. The digital display measuring ruler for a track induction plate as described in claim 1, characterized in that: The display table integrates a communication module.

3. A digital measuring ruler for a track induction plate as described in claim 2, characterized in that: The communication module is a Bluetooth module, a WIFI module, a ZiBee module, or a LoRa module.

4. A digital measuring ruler for a track induction plate as described in claim 1, characterized in that: The caliper includes a housing, an interface, a measuring rod, and a measuring head. The measuring head is connected to the housing via the measuring rod. The housing is movably mounted on the caliper body. A locking knob passes through the housing. The interface is electrically connected to the measuring head and the display meter.

5. A digital measuring ruler for a track induction plate as described in claim 1, characterized in that: The ruler body is made of aluminum alloy.

6. A digital measuring ruler for a track induction plate as described in claim 1, characterized in that: A support pad is provided on the side of the support that abuts against the rail.

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