Detected instrument moving and replacing device applied to non-contact water level gauge verification system

Abstract

The utility model discloses a detected instrument moving and replacing device applied to a non-contact water level gauge verification system. The detected instrument moving and replacing device comprises a control device, a platform frame, a linear moving mechanism, a verification platform and a clamp. One end of the platform frame is fixed to the vertical moving mechanism, the vertical moving mechanism can drive the platform frame to move vertically, and the other end of the platform frame extends outwards in the horizontal direction. The linear moving mechanism is arranged on the platform frame, the verification platform is connected with the linear moving mechanism, and the clamp is fixed on the verification platform; the linear moving mechanism can drive the verification platform to linearly move in the length direction of the platform frame. The linear moving mechanism and the vertical moving mechanism are both in communication connection with the control device. According to the utility model, the next verification can be rapidly carried out, and a lot of time and manpower are saved.

Description

Technical Field

[0001] The utility model relates to the technical field of instrument calibration, in particular to an automatic moving replacement device for a tested instrument used in a non-contact water level gauge calibration system. Background Art

[0002] Water level meters are mainly used to measure hydrological data of large rivers, lakes, reservoirs, etc. There are many types of water level meters, which are widely used in hydrological testing, water environment monitoring, water volume measurement and other measurement work. However, due to the relatively harsh hydrological environment of my country's large rivers, water level meters will be damaged in various ways after being used for a period of time, causing changes in various parameters of the instrument and affecting the measurement accuracy of the instrument. Therefore, in order to ensure the measurement accuracy of the water level meter, it is necessary to regularly recalibrate the instrument through the calibration system to determine its various performance indicators.

[0003] The non-contact water level meter calibration system is a device used to calibrate non-contact water level meters. Its principle is to use air as the transmission medium, and utilize the hydrostatic reflection of waves (radar waves, sound waves, lasers, etc.) on the water surface to measure the distance between the non-contact water level meter being calibrated and the water surface of the pool, and compare it with traceable standard instruments to calibrate the performance indicators of the non-contact water level meter being calibrated.

[0004] The existing calibration system usually sets up the non-contact water level meter to be calibrated above a still water reflecting pool, and drives the non-contact water level meter to be calibrated to move vertically through a vertical moving mechanism to obtain multiple sets of data. By comparing the data measured by the non-contact water level meter to be calibrated with the data of the standard measuring device, the various performance indicators of the non-contact water level meter to be calibrated can be calculated, and a certificate of conformity corresponding to each performance indicator can be issued. Because it is a water level meter calibration system, a still water reflecting pool with a diameter of more than 4 meters (the diameter is related to the vertical stroke, the larger the vertical stroke, the larger the diameter) is usually built directly below the non-contact water level meter to reflect the beam emitted by the water level meter for metrological calibration.

[0005] Then, the existing calibration system only has the function of driving the non-contact water level meter being calibrated to move vertically. After the calibration of a single non-contact water level meter is completed, the calibration personnel are required to wear rubber shoes and walk into the center of the still water reflecting pool to replace the next non-contact water level meter that needs to be calibrated, or drain the water in the still water reflecting pool before replacing the non-contact water level meter.

[0006] Since all basic data need to be kept consistent during each calibration process, the water level of the still water reflecting pool must be kept consistent and the water surface must remain still before each calibration begins. Therefore, after each replacement of the non-contact water level meter, an interval of 10-20 minutes is required to restore the above state, which is time-consuming and labor-intensive. Utility Model Content

[0007] In view of the deficiencies in the prior art, the utility model aims to provide a mobile replacement device for a tested instrument used in a non-contact water level gauge calibration system.

[0008] In order to achieve the above purpose, the utility model adopts the following technical solutions:

[0009] A device for moving and replacing an instrument under test applied to a non-contact water level gauge calibration system, wherein the non-contact water level gauge calibration system comprises a vertical moving mechanism and a still water reflecting pool, wherein the vertical moving mechanism is mounted on the still water reflecting pool;

[0010] The mobile replacement device for the instrument under test includes a control device, a platform frame, a linear moving mechanism, a calibration platform and a fixture; one end of the platform frame is fixed to the vertical moving mechanism, and the vertical moving mechanism can drive the platform frame to move vertically, and the other end of the platform frame extends outward in the horizontal direction; the linear moving mechanism is arranged on the platform frame, the calibration platform is connected to the linear moving mechanism, and the fixture is fixed to the calibration platform; the linear moving mechanism can drive the calibration platform to move linearly along the length direction of the platform frame;

[0011] The linear moving mechanism and the vertical moving mechanism are both communicatively connected with the control device.

[0012] Furthermore, the linear motion mechanism includes a driving motor, a synchronous pulley set, a synchronous belt and a slide rail and slider assembly; the slide rail and slider assembly includes a slide rail and a slider, the slide rail is fixed to both sides of the platform frame, and both sides of the slider are respectively connected to the slide rails on both sides and can slide along the slide rails;

[0013] The driving wheel and the driven wheel of the synchronous belt pulley group are rotatably arranged at one end and the other end of the platform frame respectively, the driving motor is fixed to the platform frame and is connected to the driving wheel; the two ends of the synchronous belt are respectively wound around the driving wheel and the driven wheel; the calibration platform is fixedly connected to the synchronous belt.

[0014] Furthermore, the clamp includes a plurality of water level gauge clamping holes of different specifications, which are used to clamp non-contact water level gauges of different specifications.

[0015] Furthermore, the clamp is provided with a plurality of pairs of mounting holes with different apertures, and each pair of mounting holes is symmetrically arranged on two sides of the clamp.

[0016] The beneficial effect of the utility model is that: on the basis of the existing non-contact water level gauge calibration system, the utility model adds a device for moving and replacing the instrument to be tested. After each calibration is completed, the non-contact water level gauge can be horizontally moved to one end of the platform frame (i.e., the edge of the still water reflecting pool) through the device. When the operator replaces the water level gauge, there is no need to enter the still water reflecting pool or drain the pool, and the water in the still water reflecting pool will not be disturbed, so the next calibration can be carried out quickly, saving a lot of time and manpower. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is an overall schematic diagram of the mobile replacement device for the instrument under test in the embodiment of the utility model;

[0018] Figure 2 It is a schematic diagram of the structure of the clamp in the embodiment of the utility model. DETAILED DESCRIPTION

[0019] The present invention will be further described below in conjunction with the accompanying drawings. It should be noted that this embodiment is based on the technical solution and provides a detailed implementation method and a specific operation process, but the protection scope of the present invention is not limited to this embodiment.

[0020] This embodiment provides a device for moving and replacing a tested instrument applied to a non-contact water level gauge calibration system. The non-contact water level gauge calibration system includes a vertical moving mechanism and a still water reflecting pool. The vertical moving mechanism is mounted on the still water reflecting pool.

[0021] like Figure 1 As shown, the mobile replacement device for the instrument under test includes a control device, a platform frame 1, a driving motor 2, a synchronous pulley group 3, a synchronous belt 4, a slide rail slider assembly, a calibration platform 6 and a fixture 7; one end of the platform frame 1 is fixed to the vertical moving mechanism, and the vertical moving mechanism can drive the platform frame 1 to move vertically, and the other end of the platform frame 1 extends outward in the horizontal direction; the slide rail slider assembly includes a slide rail 8 and a slider 5, the slide rail 8 is fixed to both sides of the platform frame 1, and both sides of the slider 5 are respectively connected to the slide rails 8 on both sides and can slide along the slide rails 8;

[0022] The driving wheel and the driven wheel of the synchronous pulley group 3 are rotatably arranged at one end and the other end of the platform frame 1 respectively, the driving motor 2 is fixed to the platform frame 1 and is connected to the driving wheel; the two ends of the synchronous belt 4 are respectively wound around the driving wheel and the driven wheel; the calibration platform 6 is fixedly connected to the synchronous belt 4, and the clamp 7 is fixed to the calibration platform 6;

[0023] The driving motor 2 and the vertical moving mechanism are both in communication connection with the control device.

[0024] In this embodiment, the clamp 7 includes a plurality of water level gauge clamping holes of different specifications, which are used to clamp non-contact water level gauges of different specifications. Figure 2 As shown, the clamp 7 has clamping holes 101, 102, 103, 104 of different specifications, and the hole diameters thereof are φ30, φ40, φ50, φ60, respectively, and can clamp non-contact water level gauges of corresponding diameters.

[0025] Furthermore, the fixture 7 is provided with a plurality of pairs of mounting holes with different apertures, and each pair of mounting holes is symmetrically arranged on both sides of the fixture 7. Figure 2 As shown, the fixture 7 is also provided with mounting hole pairs 105, 106, 107 with hole diameters of φ5, φ8, and φ11. The mounting hole pairs are used to expand and install other fixtures to support the clamping of other types of water level gauges.

[0026] The working principle of the above-mentioned mobile replacement device for the instrument under test is to set up the vertical moving mechanism of the calibration system on the side of the still water reflecting pool. The driving motor 2 and the vertical moving mechanism are started by the control device, and the driving motor 2 drives the driving wheel to rotate. The driving wheel and the driven wheel jointly drive the synchronous belt 4 to rotate, thereby driving the calibration platform together with the clamp to move toward one end of the platform frame 1. At the same time, the vertical moving mechanism drives the mobile replacement device for the instrument under test to move downward to the lowest position as a whole. At this time, the operator clamps the non-contact water level meter to be tested on the calibration platform 6 through the clamp 7, and then completes the setting of the calibration parameters in the control device.

[0027] After the preparation work is completed, start the drive motor 2 again. The drive motor 2 drives the active wheel to rotate in the opposite direction. The active wheel and the driven wheel combine to drive the synchronous belt 4 to rotate in the opposite direction, thereby driving the calibration platform together with the fixture to move to the other end of the platform frame 1 and reach the top of the static water reflection pool. The control device controls the vertical movement mechanism to move up and down according to the preset calibration parameters, and realizes the data measurement of the non-contact water level meter under different working conditions. The non-contact water level meter fed back the measurement data to the host computer in real time. According to the measurement data of the non-contact water level meter, the range, resolution, accuracy and other data of the non-contact water level meter are calculated, and compared with the factory value of the non-contact water level meter or the data of the standard measuring device, the calibration result can be obtained.

[0028] After the calibration of a non-contact water level gauge is completed, the control device starts the drive motor 2 and the vertical moving mechanism again, driving the calibration platform back to one end of the platform frame 1 and descending to the lowest position. At this time, the operator can replace the non-contact water level gauge.

[0029] For those skilled in the art, various corresponding changes and modifications can be made according to the above technical solutions and concepts, and all of these changes and modifications should be included in the protection scope of the claims of the utility model.

Claims

1. A device for moving and replacing an instrument under test used in a non-contact water level gauge calibration system, wherein the non-contact water level gauge calibration system comprises a vertical moving mechanism and a still water reflecting pool, wherein the vertical moving mechanism is mounted on the still water reflecting pool; Features: The device for moving and replacing the instrument under test comprises a control device, a platform frame (1), a linear moving mechanism, a calibration platform (6) and a fixture (7); one end of the platform frame (1) is fixed to the vertical moving mechanism, the vertical moving mechanism can drive the platform frame (1) to move vertically, and the other end of the platform frame (1) extends outward in the horizontal direction; the linear moving mechanism is arranged on the platform frame (1), the calibration platform (6) is connected to the linear moving mechanism, and the fixture (7) is fixed to the calibration platform (6); the linear moving mechanism can drive the calibration platform (6) to move linearly along the length direction of the platform frame (1); The linear moving mechanism and the vertical moving mechanism are both communicatively connected with the control device.

2. The device for moving and replacing the inspected instrument according to claim 1, It is characterized in that The linear motion mechanism comprises a driving motor (2), a synchronous pulley set (3), a synchronous belt (4) and a slide rail and slider assembly; the slide rail and slider assembly comprises a slide rail (8) and a slider (5), the slide rail (8) is fixed on both sides of the platform frame (1), and both sides of the slider (5) are respectively connected to the slide rails (8) on both sides and can slide along the slide rails (8); The driving wheel and the driven wheel of the synchronous pulley group (3) are rotatably arranged at one end and the other end of the platform frame (1), respectively; the driving motor (2) is fixed to the platform frame (1) and is connected to the driving wheel in a transmission manner; the two ends of the synchronous belt (4) are respectively wound around the driving wheel and the driven wheel; and the calibration platform (6) is fixedly connected to the synchronous belt (4).

3. The device for moving and replacing the inspected instrument according to claim 1, It is characterized in that The clamp (7) comprises a plurality of water level gauge clamping holes of different specifications and is used for clamping non-contact water level gauges of different specifications.

4. The device for moving and replacing the inspected instrument according to claim 3, It is characterized in that The clamp (7) is also provided with a plurality of pairs of mounting holes with different apertures, and each pair of mounting holes is symmetrically arranged on two sides of the clamp (7).

Images