Contact line and busbar overall thickness measuring instrument

Abstract

The utility model belongs to the technical field of measuring instruments, and discloses a contact line and busbar overall thickness measuring instrument which comprises a shell, two rows of positioning wheels are arranged at the top of the shell, a laser sensor, a digital display device, a threshold value adjusting button and an alarm device are arranged on the shell, and a processing module is arranged in the shell. The processing module is electrically connected with the laser sensor, the digital display device, the threshold value adjusting button and the alarm device. The transmitting end of the laser sensor is arranged upwards, and the laser sensor is located between the two rows of positioning wheels. According to the utility model, the special structure of the groove on the bottom surface of the busbar and the characteristic of less scale deposit at the bottom are utilized, the positioning wheel slides along the groove on the bottom surface, the laser sensor is configured to scan the height of a contact line in real time, and handheld digital display measurement with real-time visual reading from point to line is realized.

Description

Technical Field

[0001] The utility model belongs to the technical field of measuring instruments, and in particular relates to an instrument for measuring the overall thickness of a contact line and a busbar. Background Art

[0002] The rigid catenary is an important component of the urban rail transit catenary system. During operation, the electrical contact and mechanical action of the catenary will cause different degrees of abnormal wear, resulting in different frequency line replacement cycles. In order to prevent the occurrence of catenary failures due to the wear of the contact wire to the limit, high-density monitoring and measurement of the contact wire in the abnormal wear section is required.

[0003] At present, the contact network professionals use vernier calipers to measure the overall height of the busbar and the contact line in the contact line wear measurement, and analyze the remaining height, wear rate and expected life of the contact line based on the measurement results. According to the above analysis results, the construction plan is arranged in advance to complete the replacement of the contact line of the diseased anchor section to ensure the reliable operation of the rigid contact network.

[0004] At present, in the measurement of rigid contact line wear, the contact network professionals use vernier calipers to measure the overall height of the busbar and the contact line, which has the following disadvantages:

[0005] 1. The vernier caliper measurement method is single-point measurement. Finding the lowest point of the contact line requires preliminary observation by naked eyes, which may easily lead to missing abnormal wear points;

[0006] 2. Since there are many abnormal wear points on the contact line in the exit acceleration section and they are unevenly distributed, repeated measurements and comparisons are required, which takes a long time and has low efficiency;

[0007] 3. The measured value is from the top surface of the busbar to the lowest point of the contact line. During the measurement process, measurement errors may occur due to busbar size deviation, scale thickness and the verticality of the vernier caliper manually operated. Utility Model Content

[0008] The utility model aims to solve the above technical problems at least to a certain extent. To this end, the utility model aims to provide a contact wire and busbar overall thickness measuring instrument.

[0009] The technical solution adopted by the utility model is:

[0010] A contact line and busbar overall thickness measuring instrument comprises a shell, two rows of positioning wheels are arranged on the top of the shell, a laser sensor, a digital display device, a threshold adjustment button and an alarm device are arranged on the shell, and a processing module is arranged in the shell; the processing module is electrically connected to the laser sensor, the digital display device, the threshold adjustment button and the alarm device respectively; the emitting end of the laser sensor is arranged upward, and the laser sensor is located between the two rows of positioning wheels.

[0011] Preferably, a lithium battery is provided in the housing, and a power switch for controlling the power supply is provided on the housing. A measurement point mark is provided on one side of the housing, and the measurement point mark is provided corresponding to the position of the laser sensor. The alarm device includes a buzzer and / or a warning light provided on the housing. The positioning wheel is made of polyoxymethylene.

[0012] The beneficial effects of the utility model are:

[0013] The utility model provides a contact line and busbar overall thickness measuring instrument, which utilizes the special structure of the groove on the bottom surface of the busbar and the less dirt accumulation on the bottom. The positioning wheel slides along the groove on the bottom surface, and a laser sensor is configured to scan the contact line height in real time. The handheld digital display measurement with real-time intuitive readings from point to line; based on the precise measurement, the threshold can be set, and it has an over-limit reminder function to avoid the phenomenon of manual missed measurement. The tool should have the characteristics of continuous measurement, high precision, convenient operation, over-limit alarm reminder, etc. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 It is a side view of the utility model of the contact line and busbar overall thickness measuring instrument.

[0015] Figure 2 The utility model is a bottom view of the contact line and busbar overall thickness measuring instrument.

[0016] Figure 3 The utility model is a working schematic diagram of the contact line and busbar overall thickness measuring instrument.

[0017] Figure 4 It is a working schematic diagram of another angle of the contact line and busbar overall thickness measuring instrument of the utility model.

[0018] In the figure: 1-housing; 2-positioning wheel; 3-laser sensor; 4-digital display device; 5-threshold adjustment button; 6-buzzer; 7-warning light; 8-lithium battery; 9-power switch; 10-measuring point mark; 11-charging port; 12-bolt; 13-bus; 14-contact wire. DETAILED DESCRIPTION

[0019] Embodiments of the present invention are described in detail below, examples of which are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are intended to be used to explain the present invention, and should not be construed as limiting the present invention. The components of the embodiments of the present invention generally described and shown in the accompanying drawings herein can be arranged and designed in a variety of different configurations.

[0020] In the present utility model, unless otherwise clearly stipulated and limited, the terms such as "installed", "connected", "connected", "fixed" and the like should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, or it can be the internal connection of two elements.

[0021] The present invention will be further described below in conjunction with the accompanying drawings and specific embodiments.

[0022] like Figures 1 to 4 As shown, a contact line and bus overall thickness measuring instrument of the present embodiment includes a shell 1, which is a structural frame formed by bending a stainless steel plate. The shell 1 is a supporting frame built by various components, and internal components such as lithium batteries, digital display devices and laser sensors are fixed in partitions; two rows of positioning wheels 2 are provided on the top of the shell 1, and each row of positioning wheels includes two positioning wheels installed on the shell 1 by bolts 12. The positioning wheels can fit the measuring instrument into the groove on the bottom surface of the bus 13, so that the measuring instrument can move along the bus line.

[0023] A laser sensor 3, a digital display device 4, a threshold adjustment button 5 and an alarm device are provided on the shell 1, and a processing module is provided in the shell 1; the processing module is electrically connected to the laser sensor 3, the digital display device 4, the threshold adjustment button 5 and the alarm device respectively.

[0024] The emitting end of the laser sensor 3 is set upwards, and the laser sensor 3 is located between the two rows of positioning wheels 2. When in use, the emitting end of the laser sensor 3 is directly opposite to the bottom of the contact line 14, and the distance from the contact line to the laser sensor is measured by the laser beam. The digital display device 4 uses a five-digit Arabic numeral display screen, which is accurate to two decimal places, which is convenient for intuitive reading. The processing module converts the analog quantity generated by the displacement of the laser sensor 3 and the bottom surface of the contact line into the final measurement data, which is accurate to two decimal places, and is displayed through the digital display device 4.

[0025] A lithium battery 8 is arranged in the housing 1, and the lithium battery 8 is a 12V / 1300mAh lithium battery. The housing 1 is provided with a power switch 9 for controlling the power on and off and a charging port 11 for charging the lithium battery 8. The alarm device includes a buzzer 6 and a warning light 7 arranged on the housing 1, which can realize the sound and light warning function.

[0026] A measuring point mark 10 is provided on one side of the housing 1, and the measuring point mark 10 is arranged corresponding to the position of the laser sensor 3, so that the measuring personnel can know the specific position of the measuring point. In this embodiment, the positioning wheel 2 is made of polyoxymethylene. In other embodiments, considering that the positioning wheel will be worn to a certain extent after long-term use, the positioning wheel can also be made of other wear-resistant materials to further improve durability.

[0027] In actual use, the overall thickness measuring instrument for contact wires and busbars is equipped with two rows of positioning wheels as the moving parts of the measuring instrument. The handheld measuring instrument fits the groove on the bottom surface of the busbar and can be moved along the line direction. When measuring, the operator turns on the power switch, and the laser sensor will measure the midpoint height of the contact wire in real time and generate analog current. The processing module converts the analog current into the overall thickness value of the busbar and contact wire and displays it in real time through the digital display device. The measuring personnel judge the thickness of the contact wire through the displayed value. The sensor can set the threshold through the threshold adjustment button. When the limited wear value is reached, the alarm device will provide sound and light alarms to avoid the situation of missing local points.

[0028] Compared with the existing vernier caliper measurement method, this measuring instrument has the following advantages:

[0029] (1) The impact of environmental factors is relatively small. The top surface of the busbar needs to be cleaned before using the vernier caliper. The grooves on the bottom surface of the busbar have less scale than the top surface, so it takes less time to clean the scale before measurement.

[0030] (2) Real-time measurement: Vernier calipers are used to measure the contact line at a single point and compare them repeatedly to confirm the lowest point. The laser sensor of the measuring instrument can collect data at a maximum speed of 64 times per second, which can measure and display the clearance height of the bottom of the contact line at the measurement point in real time, achieving accurate measurement from point to line, simplifying the tedious process of manually using vernier calipers to repeatedly compare and measure multiple points in the traditional measurement method;

[0031] (3) High precision: The theoretical accuracy of the laser sensor is 0.001mm, and the display accuracy is 0.01mm. The error is no more than 0.1mm when comparing the measurement data with the mechanical vernier caliper on site.

[0032] (4) Warning function: The vernier caliper needs to be preliminarily observed by naked eyes when measuring the lowest point of the contact line. Manual judgment is likely to cause the abnormal wear point to be missed. The measuring instrument provides a warning function, and the warning threshold can be set as required. When the measuring instrument detects data exceeding the limit, it will automatically send out an audible and visual signal to avoid the situation of missing local points.

[0033] (5) Convenient operation: The measuring instrument can start measuring as soon as the power is turned on. It can be held in one hand and slid to any point of the bus groove. The measurement can be completed at a speed of 3 km / h with a ladder truck, so it can be stopped at any time, which is convenient to operate.

[0034] (6) Efficiency improvement: After a field trial at the exit acceleration zone (about 150 meters) of some stations on a certain line, the average time taken when using a vernier caliper was 20.3 minutes, and the average time taken when using a measuring instrument was 8.3 minutes, which greatly improved the efficiency of professional contact network wear detection.

[0035] The present utility model is not limited to the above-mentioned optional implementation modes. Anyone can derive other various forms of products under the inspiration of the present utility model. However, no matter what changes are made in the shape or structure, all technical solutions that fall within the scope defined by the claims of the present utility model fall within the protection scope of the present utility model.

Claims

1. A contact line and busbar overall thickness measuring instrument, characterized in that: The invention comprises a housing (1), wherein two rows of positioning wheels (2) are arranged on the top of the housing (1), a laser sensor (3), a digital display device (4) and an alarm device are arranged on the housing (1), and a processing module is arranged inside the housing (1); the processing module is electrically connected to the laser sensor (3), the digital display device (4) and the alarm device respectively; the emitting end of the laser sensor (3) is arranged upward, and the laser sensor (3) is located between the two rows of positioning wheels (2).

2. The contact wire and busbar overall thickness measuring instrument according to claim 1, characterized in that: A lithium battery (8) is arranged in the housing (1), and a power switch (9) for controlling the on and off of power is arranged on the housing (1).

3. The contact wire and busbar overall thickness measuring instrument according to claim 1, characterized in that: A measuring point mark (10) is provided on one side of the housing (1), and the measuring point mark (10) is arranged corresponding to the position of the laser sensor (3).

4. The contact wire and busbar overall thickness measuring instrument according to claim 1, characterized in that: The alarm device comprises a buzzer (6) and / or a warning light (7) arranged on the housing (1).

5. The contact wire and busbar overall thickness measuring instrument according to any one of claims 1 to 4, characterized in that: The positioning wheel (2) is made of polyoxymethylene.

6. The contact wire and busbar overall thickness measuring instrument according to claim 1, characterized in that: The housing (1) is provided with a threshold adjustment button (5), and the threshold adjustment button (5) is electrically connected to the processing module.

7. The contact wire and busbar overall thickness measuring instrument according to claim 1, characterized in that: Each row of positioning wheels (2) comprises two positioning wheels mounted on the housing (1) via bolts (12).

Images