Calibration device for cable meter counting function equipment

Abstract

The utility model discloses a calibration device for cable meter counting function equipment. The calibration device comprises a fixed bracket, a laser Doppler velocimeter, a plurality of pulleys and a driving assembly, the fixing bracket comprises a laser Doppler velocimeter bracket, a pulley bracket and a driving assembly bracket; the laser Doppler velocimeter bracket is used for fixing the laser Doppler velocimeter; the plurality of pulleys are sequentially arranged and fixed on the pulley bracket; the pulley is used for winding a cable of the measured cable meter counter; the laser Doppler velocimeter is fixedly arranged right above the cable of the pulley in the middle, and one end of the cable is connected with the driving assembly; when the driving assembly runs, the cable is dragged, the measurement result of the laser Doppler velocimeter on the movement distance of the cable is read, an indicating value is read in the device of the detected cable meter counter, data are recorded, and calibration work is completed. According to the utility model, the calibration of the CCTV pipeline detection robot and other cable meter counters with cables can be realized, the automation precision is high, the operation is easy, and the working efficiency and the accuracy of measurement results can be greatly improved.

Description

Technical Field

[0001] The utility model belongs to the technical field of measuring instruments, and specifically refers to a calibration device for equipment with a cable meter function. Background Art

[0002] Many instruments used for municipal and construction engineering inspections include cable meter counters. These include magnetic testers and borehole imagers commonly used for pile foundation quality testing, digital pipeline inspection robots commonly used for municipal pipeline inspection, and multifunctional ultrasonic hole quality testers used for bored pile hole quality testing. Cable length error is a critical parameter for these instruments, directly impacting the accuracy of test results.

[0003] However, there is currently no efficient and accurate calibration method or traceability system to ensure the accuracy of cable length (or depth) errors in these instruments. The "JJG (Traffic) 175-2021 Verification Procedure for Magnetic Cage Length Detectors" still uses the traditional steel tape measure method for cable length measurement, which is time-consuming and labor-intensive. Utility Model Content

[0004] The technical problem to be solved by the utility model is to provide a high-precision and automated calibration device for a cable meter.

[0005] The utility model is achieved in this way:

[0006] A calibration device for a cable meter function device, comprising: a fixing bracket, a laser Doppler velocimeter, a plurality of pulleys, and a drive assembly;

[0007] The fixed bracket includes: a laser Doppler velocimeter bracket, a pulley bracket and a drive assembly bracket; the laser Doppler velocimeter bracket fixes the laser Doppler velocimeter; the multiple pulleys are sequentially arranged and fixed on the pulley bracket; the drive assembly is installed on the drive assembly bracket;

[0008] The pulley is a V-groove pulley for winding the cable of the cable meter under test; the laser Doppler velocimeter is fixedly arranged just above the cable of the pulley located in the middle; the drive assembly is fixedly installed at the outlet end of the pulley bracket, and one end of the cable is connected to the drive assembly;

[0009] When the driving assembly is in operation, the cable is dragged, the measurement result of the cable movement distance by the laser Doppler velocimeter is read, and the indication value is read in the device of the cable meter under inspection, the data is recorded, and the calibration work is completed;

[0010] The driving assembly includes: a driving motor, a driving wheel and a pressure wheel;

[0011] The driving wheel and the pressing wheel are mounted on the driving assembly bracket; the main shaft of the driving wheel is connected to the driving motor;

[0012] The pressing wheel is located directly above the driving wheel;

[0013] The cable is placed on the upper side of the driving wheel, and the cable is pressed against the driving wheel by the clamping wheel, and then the driving motor drives the driving wheel to rotate, thereby achieving the dragging of the cable;

[0014] The laser Doppler velocimeter is fixed on the laser Doppler velocimeter bracket through a height adjustment mechanism.

[0015] Furthermore, the pressure wheel is connected to a wire rod lifting mechanism for adjusting the height of the pressure wheel.

[0016] Furthermore, the number of the pulleys is 5, and they are arranged in a staggered manner in height.

[0017] Furthermore, the installation hole of the pulley on the pulley bracket is a long hole, which is used to adjust the installation height of the pulley.

[0018] Furthermore, the fixing bracket has a bottom plate fixed on an optical vibration isolation platform.

[0019] The utility model has the advantages that it can realize the calibration of CCTV (Closed Circuit Television) pipeline detection robots and other cable meter meters with their own cables, has high automation precision and is easy to operate, and can greatly improve work efficiency and measurement result accuracy. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0021] Figure 1 It is a schematic diagram of the device structure of the utility model.

[0022] Reference numerals:

[0023] 1-Laser Doppler velocimeter, 2-Pulley, 3-Laser Doppler velocimeter bracket, 4-Pulley bracket, 5-Drive assembly bracket, 6-Drive motor, 7-Drive wheel, 8-Pressure wheel, 9-Height adjustment mechanism, 10-Base plate, 100-Cable. DETAILED DESCRIPTION

[0024] like Figure 1 As shown, the calibration device for a cable meter function device includes: a fixing bracket, a laser Doppler velocimeter 1, five pulleys 2, and a drive assembly;

[0025] The fixed bracket includes: a laser Doppler velocimeter bracket 3, a pulley bracket 4 and a drive assembly bracket 5;

[0026] The laser Doppler velocimeter bracket 3 fixes the laser Doppler velocimeter 1; the five pulleys 2 are arranged in a staggered manner and fixed on the pulley bracket 4; the drive assembly is installed on the drive assembly bracket 5;

[0027] The pulley 2 is a V-groove pulley for winding the cable 100 of the cable meter under test;

[0028] The laser Doppler velocimeter 1 is fixedly mounted just above the cable of the pulley 2 in the middle;

[0029] The output end of the pulley bracket 4 is fixedly mounted with the drive assembly, and one end of the cable 100 is connected to the drive assembly;

[0030] The drive assembly includes a drive motor 6, a drive wheel 7, and a pressure wheel 8. The drive wheel 7 and the pressure wheel 8 are mounted on the drive assembly bracket 5. The main shaft of the drive wheel 7 is connected to the drive motor 6. The pressure wheel 8 is located directly above the drive wheel 7.

[0031] The cable 100 is placed on the upper side of the driving wheel 7 , and the cable 100 is pressed against the driving wheel 7 by the clamping wheel 8 , and then the driving motor 6 drives the driving wheel 7 to rotate, thereby achieving the dragging of the cable 10 .

[0032] The pressing wheel 8 is connected to a wire rod lifting mechanism for adjusting the height of the pressing wheel 8.

[0033] The laser Doppler velocimeter 1 is fixed on the laser Doppler velocimeter bracket 3 via a height adjustment mechanism 9 .

[0034] The installation hole of the pulley 2 on the pulley bracket 4 is a long hole, which is used to adjust the installation height of the pulley 2. Different cable winding methods can be achieved by changing the installation position of the pulley, thereby providing different tension levels for the cable.

[0035] The fixing bracket has a bottom plate 10 which can be fixed on an optical vibration isolation platform.

[0036] When in use, the cable 100 to be inspected is wound around the pulley 2, and the cable 100 is clamped on the driving wheel 7 by the clamping wheel 8. The operation of the cable 100 is controlled by the PC software to control the operating speed and running distance of the driving motor 6. During operation, the laser Doppler velocimeter 1 can simultaneously measure the running distance of the cable 100 to obtain a calibration value, and the indicated value can be read in the device of the cable meter to record the data to complete the calibration work.

[0037] The utility model can realize the calibration of CCTV (Closed Circuit Television) pipeline detection robots and other cable meter meters with their own cables, has high automation precision and is easy to operate, and can greatly improve work efficiency and measurement result accuracy.

[0038] The above embodiments and drawings do not limit the product form and style of the present invention. Any appropriate changes or modifications made by ordinary technicians in the relevant technical field should be deemed to be within the patent scope of the present invention.

Claims

1. A calibration device for a cable meter function device, characterized in that: include: Fixed bracket, laser Doppler velocimeter, multiple pulleys, drive assembly; The fixed bracket includes: a laser Doppler velocimeter bracket, a pulley bracket and a drive assembly bracket; the laser Doppler velocimeter bracket fixes the laser Doppler velocimeter; the multiple pulleys are sequentially arranged and fixed on the pulley bracket; the drive assembly is installed on the drive assembly bracket; The pulley is a V-groove pulley for winding the cable of the cable meter under test; the laser Doppler velocimeter is fixedly arranged just above the cable of the pulley located in the middle; the drive assembly is fixedly mounted on the output end of the pulley bracket, and one end of the cable is connected to the drive assembly; When the drive assembly is in operation, it drags the cable, reads the measurement result of the cable movement distance by the laser Doppler velocimeter, and reads the indicated value in the device of the cable meter under inspection, records the data, and completes the calibration work; The driving assembly includes: a driving motor, a driving wheel and a pressure wheel; The driving wheel and the pressing wheel are mounted on the driving assembly bracket; the main shaft of the driving wheel is connected to the driving motor; The pressing wheel is located directly above the driving wheel; The cable is placed on the upper side of the driving wheel, and the cable is pressed against the driving wheel by the clamping wheel, and then the driving motor drives the driving wheel to rotate, thereby achieving the dragging of the cable; The laser Doppler velocimeter is fixed on the laser Doppler velocimeter bracket through a height adjustment mechanism.

2. The calibration device for a cable meter function device according to claim 1, characterized in that: The pinch wheel is connected to a wire rod lifting mechanism for adjusting the height of the pinch wheel.

3. The calibration device for a cable meter function device according to claim 1, characterized in that: The number of the pulleys is 5, and they are arranged in a staggered manner in height.

4. The calibration device for a cable meter function device according to claim 1, characterized in that: The installation hole of the pulley on the pulley bracket is a long hole, which is used to adjust the installation height of the pulley.

5. The calibration device for a cable meter function device according to claim 1, characterized in that: The fixing bracket has a bottom plate fixed on an optical vibration isolation platform.

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