An adjustable lifting device for water level gauge test trolley

Abstract

The utility model relates to test equipment technical field especially relates to a kind of adjustable lifting device for water level gauge test trolley, including support column and the lifting plate for installing the equipment to be detected;Horizontal rotation mechanism is arranged between the support column and lifting plate;The horizontal rotation mechanism includes fixed ring, gear ring and first motor and driving gear, the fixed ring is fixedly installed on the support column, the gear ring is rotatably connected with the fixed ring, and the lifting plate is fixedly installed on the gear ring;The first motor is fixedly installed on the support column, driving gear is installed on the first motor, and is engaged with the gear ring. The utility model is added horizontal rotation mechanism, accurately adjusts and guarantees the perpendicularity of equipment to be detected and wall when parking calibration calibration, improves the accuracy of detection data.

Description

Technical Field

[0001] This utility model relates to the field of testing equipment technology, and in particular to an adjustable lifting device for a water level gauge testing trolley. Background Technology

[0002] Water level gauges are critical sensors used in water conservancy monitoring and hydrological stations to measure water height, and their measurement accuracy directly affects data reliability. To ensure accuracy, water level gauges need to be calibrated regularly on dedicated testing equipment. Testing trolleys are commonly used mobile calibration platforms. Their core component, the lifting device, is responsible for carrying and precisely adjusting the water level gauge to a preset height, ensuring it maintains a suitable relative position with calibration reference objects (such as wall-mounted reflective targets) when moving to different calibration points, facilitating distance measurement and error analysis.

[0003] A prior art device and method for calibrating and testing a water level gauge based on magnetic navigation technology is disclosed. The device mainly includes a base, a lifting mechanism, a testing platform, a drive mechanism, and a control system. Its operation is as follows: a trolley moves along a magnetic strip to a calibration point and pauses; a laser rangefinder measures the distance to a reference object as a baseline value, which is then compared with the water level gauge measurement to complete calibration or testing. The lifting mechanism is used to adjust the testing platform to the height required by the water level gauge before testing.

[0004] The water level gauge detection and calibration device has the following technical problems:

[0005] First, because the test vehicle uses magnetic navigation technology, the drive device often uses differential drive. During the journey, it is difficult to ensure the perpendicularity of the tested equipment (water level gauge) to the wall each time it stops at the calibration point, resulting in a large measurement error and affecting the accuracy of the calibration test data.

[0006] Secondly, the testing platform lacks a dedicated clamping structure, requiring manual tightening of the water level gauge using wrenches, bolts, and clamps. This process is cumbersome and time-consuming, increasing labor costs. Furthermore, manual operation can easily lead to inconsistent clamping positions or loosening, affecting test repeatability and accuracy. Utility Model Content

[0007] To address the shortcomings of existing technologies, the purpose of this utility model embodiment is to provide an adjustable lifting device for a water level gauge testing trolley. By adding a horizontal rotation mechanism, the perpendicularity of the tested equipment to the wall is precisely adjusted and ensured during parking calibration, thereby improving the accuracy of the test data.

[0008] To achieve the above objectives, the present invention provides the following technical solutions:

[0009] An adjustable lifting device for a water level gauge testing trolley includes a support column and a lifting plate for mounting the device to be tested; a horizontal rotation mechanism is provided between the support column and the lifting plate; the horizontal rotation mechanism includes a fixed ring, a gear ring, a first motor, and a drive gear; the fixed ring is fixedly mounted on the support column, the gear ring is rotatably connected to the fixed ring, and the lifting plate is fixedly mounted on the gear ring; the first motor is fixedly mounted on the support column, and the drive gear is mounted on the first motor and meshes with the gear ring.

[0010] Optionally, the inner side of the fixing ring has symmetrically arranged mounting seats, which can be detachably installed on the two sides of the support column.

[0011] Optionally, a limiting ring is also provided on the inner side of the fixed ring, and a limiting plate is installed in the limiting ring. The output shaft of the first motor passes through the limiting plate and is rotatably connected to the limiting plate. The drive gear is installed on the output shaft of the first motor.

[0012] Optionally, the lifting plate is provided with a clamping mechanism for holding the device to be tested. The clamping mechanism includes clamping blocks, a guide rod, and a second motor. The guide rod is fixedly installed on the lifting plate. There are two clamping blocks, both of which are slidably installed on the guide rod. The second motor is fixedly installed on the lifting plate and is used to drive the two clamping blocks to move closer to or further away from the guide rod.

[0013] Optionally, the lifting device also includes a fixed frame, a ball screw, and a base plate. The fixed frame is fixedly installed on the test trolley, the ball screw is installed on the fixed frame, the base plate is installed on the ball screw, and the support column is installed on the base plate.

[0014] Optionally, the fixing frame includes a fixing plate, an aluminum profile, and a fixing seat. The fixing plate and the aluminum profile are mounted on the test trolley, and the fixing seat is mounted on the aluminum profile. The two ends of the ball screw are respectively rotatably mounted on the fixing plate and the fixing seat. A threaded copper sleeve that mates with the ball screw is installed on the base plate.

[0015] Optionally, a third motor is installed on the fixed base, which is used to drive the rotation of the ball screw; an encoder is provided on the top of the ball screw, which is used to detect the number of turns of the ball screw.

[0016] Optionally, a guide rail is fixedly installed on the inner side of the aluminum profile, and a slider is fixedly installed on the side of the support column, with the slider slidably mounted on the guide rail.

[0017] Optionally, a limit sensor is provided at the top of the side of the aluminum profile, and an upper limit block is provided at the upper part and a lower limit block is provided at the lower part of the side of the support column.

[0018] Optionally, a handwheel is rotatably mounted on the fixed base, and the handwheel is connected to the ball screw through a helical gear set. A scale is also provided on the side of the support column.

[0019] One or more technical solutions provided in the embodiments of this utility model have at least the following technical effects or advantages:

[0020] 1. In the adjustable lifting device of this utility model, a horizontal rotation mechanism is provided between the supporting column and the lifting plate. The horizontal rotation mechanism includes a fixed ring, a gear ring, a first motor, and a drive gear. The fixed ring is installed on the supporting column, the gear ring is rotatably connected to the fixed ring, and the lifting plate is fixed on the gear ring. The first motor is fixed on the supporting column, and the drive gear on it meshes with the gear ring. When the first motor is driven, it drives the drive gear to rotate, thereby causing the gear ring and the lifting plate to rotate together around the supporting column. This allows adjustment of the angle of the tested equipment, such as the water level gauge, installed on the lifting plate, ensuring that it is accurately perpendicular to the wall during testing. This effectively solves the problem of large calibration errors caused by the inability to guarantee the perpendicularity of the tested equipment to the wall in the prior art, thus improving the accuracy of calibration and testing data.

[0021] 2. By setting up an automatic clamping mechanism, the water level gauge can be quickly, automatically, and reliably fixed, eliminating the need for manual tightening, saving manpower and resources, and improving clamping consistency and testing efficiency.

[0022] 3. The device employs an integrated manual and electric lifting structure, allowing switching to manual mode in case of electric lifting failure, ensuring continuous testing and improving efficiency. An encoder combined with a scale provides precise control and verification of the lifting height, meeting high-precision testing requirements. Upper and lower limit blocks with limit sensors are installed on the support column to effectively prevent lifting malfunctions and enhance equipment safety. Ultimately, this results in a simple, easily adjustable, compact, lightweight, and low-cost adjustable lifting device suitable for water level gauge testing trolleys, comprehensively improving the efficiency and accuracy of water level gauge calibration and testing, and ensuring the stability and reliability of the testing process.

[0023] Additional advantages of this invention will be set forth in the description which follows, and in part will be obvious from the description or may be learned by practice of the invention. Attached Figure Description

[0024] The accompanying drawings, which form part of this specification, are used to provide a further understanding of this utility model. The illustrative embodiments and descriptions of this utility model are used to explain this utility model and do not constitute an undue limitation thereof. Furthermore, the spacing or dimensions between components are exaggerated to show their positions; the schematic diagrams are for illustrative purposes only.

[0025] Figure 1 This is a front view of the lifting device provided in an embodiment of this utility model;

[0026] Figure 2 This is a rear view of the lifting device provided in an embodiment of this utility model;

[0027] Figure 3 This is a left view of the lifting device provided in an embodiment of this utility model;

[0028] Figure 4 This is a right view of the lifting device provided in an embodiment of this utility model;

[0029] Figure 5 This is a top view of the lifting device provided in an embodiment of this utility model;

[0030] Figure 6 This is a bottom view of the lifting device provided in an embodiment of the present utility model;

[0031] Figure 7 The lifting device provided in this embodiment of the utility model is a three-dimensional Figure 1 ;

[0032] Figure 8 The lifting device provided in this embodiment of the utility model is a three-dimensional Figure 2 ;

[0033] Figure 9 yes Figure 4 NN section view;

[0034] Figure 10 yes Figure 1 PP section view;

[0035] Figure 11 This is the horizontal rotation mechanism provided in this embodiment of the utility model;

[0036] Figure 12 This is a schematic diagram of the fixing ring provided in an embodiment of the present utility model;

[0037] Figure 13 This is a schematic diagram showing the cooperation between the fixing ring and the first motor and drive gear provided in this embodiment of the utility model;

[0038] In the diagram: 1. Fixed plate; 2. Base plate; 3. Slider; 4. Support column; 5. Guide rail; 6. Handwheel; 7. Third motor; 8. Lifting plate; 9. Encoder; 10. Ball screw; 11. Helical gear set; 12. Scale; 13. Horizontal rotation mechanism; 14. Clamping mechanism; 15. Limit sensor; 16. Upper limit block; 17. Lower limit block; 18. Fixed seat; 19. Clamping block; 20. Second motor; 21. Guide rod; 22. Fixed ring; 23. Gear ring; 24. Drive gear; 25. First motor; 26. Mounting seat; 27. Limit ring; 28. Limit plate; 29. ​​Angle sensor; Detailed Implementation

[0039] It should be noted that the following detailed description is illustrative and intended to provide further explanation of the present invention. Unless otherwise specified, all technical and scientific terms used in this invention have the same meaning as commonly understood by one of ordinary skill in the art to which this invention pertains. Furthermore, it should be understood that when the terms "comprising" and / or "including" are used in this specification, they indicate the presence of features, steps, operations, devices, components, and / or combinations thereof.

[0040] like Figure 1 , Figure 2 , Figure 3 , Figure 4 As shown in the figure, this embodiment proposes an adjustable lifting device for a water level gauge testing trolley, including a support column 4 and a lifting plate 8 for installing the equipment to be tested, and a horizontal rotation mechanism 13 is provided between the support column 4 and the lifting plate 8.

[0041] like Figure 11 As shown, the horizontal rotation mechanism 13 includes a fixed ring 22, a gear ring 23, a first motor 25, and a drive gear 24. The fixed ring 22 is fixedly installed on the support column 4, the gear ring 23 is rotatably connected to the fixed ring 22, and the lifting plate 8 is fixedly installed on the gear ring 23. The first motor 25 is fixedly installed on the support column 4, and the drive gear 24 is installed on the first motor 25 and meshes with the gear ring 23.

[0042] When the trolley reaches the calibration point, the first motor 25 drives the gear ring 23 to rotate via the drive gear 24, precisely adjusting the lifting plate 8 and the mounted water level sensor to a state perpendicular to the wall (combined with the angle sensor 29 to achieve closed-loop control). The rigid installation of the fixed ring 22 ensures rotational stability, and the large-diameter design of the gear ring 23 provides high torque transmission capability, enabling precise angle fine-tuning in conjunction with the pinion gear. The addition of the horizontal rotation mechanism 13 solves the problem of not being able to guarantee the perpendicularity of the tested equipment to the wall when the test trolley stops.

[0043] The adjustment process in conjunction with angle sensor 29:

[0044] 1. Install angle sensor 29: The angle sensor 29 is installed on the lifting plate 8, to the left of the clamping mechanism 14. Ensure that the angle sensor 29 can measure its angle change in the horizontal plane and that the sensor can read data normally. 2. Determine the reference direction: Select a reference direction as the initial position (zero point) and use a laser theodolite (to calibrate the sensor) to determine the perpendicularity and value of the initial position. 3. Measure the current angle: The trolley measures the current angle using the angle sensor 29 during its movement. 4. Calculate and adjust the angle: Based on the feedback value from the angle sensor 29, compare it with the value at the initial position to calculate the angle that needs to be adjusted. Adjustment is then made using the horizontal rotation mechanism.

[0045] like Figure 12 As shown, the inner side of the fixing ring 22 has symmetrically arranged mounting seats 26, which can be detachably installed on the two sides of the support column 4.

[0046] The mounting seats 26, symmetrically arranged inside the fixing ring 22, are detachably connected to the two sides of the support column 4 by bolts. This serves two purposes: firstly, symmetrical force distribution avoids rotational eccentricity, ensuring smooth operation of the gear ring 23; secondly, it facilitates quick disassembly of the horizontal rotation mechanism 13 during maintenance. The mounting seats 26 are fitted snugly against the sides of the support column 4, increasing the contact area and reducing the impact of vibration on angular accuracy.

[0047] like Figure 13 As shown, a limiting ring 27 is also provided on the inner side of the fixed ring 22. A limiting plate 28 is installed in the limiting ring 27. The output shaft of the first motor 25 passes through the limiting plate 28 and is rotatably connected to the limiting plate 28. The drive gear 24 is installed on the output shaft of the first motor 25.

[0048] By limiting the radial displacement of the motor shaft with the limiting plate 28, the gear meshing misalignment is prevented, and the horizontal rotation mechanism 13 can stably and accurately drive the lifting plate 8 and the equipment under test to rotate, thereby ensuring the smooth progress of calibration and testing.

[0049] like Figure 5 , Figure 7 , Figure 8 As shown, the lifting plate 8 is equipped with a clamping mechanism 14 for holding the device being tested, such as... Figure 9 As shown, the clamping mechanism 14 includes clamping blocks 19, guide rods 21, and a second motor 20. The guide rods 21 are fixedly mounted on the lifting plate 8. There are two clamping blocks 19, both of which are slidably mounted on the guide rods 21. The second motor 20 is fixedly mounted on the lifting plate 8 and is used to drive the two clamping blocks 19 to move closer to or further away from the guide rods 21.

[0050] By controlling the second motor 20, the equipment under test can be quickly and automatically clamped and fixed without the need for manual tightening with tools such as wrenches and bolts, which greatly saves manpower and material costs and improves the efficiency of testing and calibration.

[0051] like Figure 1 , Figure 9 , Figure 10 As shown, the lifting device also includes a fixed frame, a ball screw 10 and a base plate 2. The fixed frame is fixedly installed on the test trolley, the ball screw 10 is installed on the fixed frame, the base plate 2 is installed on the ball screw 10, and the support column 4 is installed on the base plate 2.

[0052] The ball screw 10 has advantages such as high transmission efficiency, high positioning accuracy, and low friction loss. The rotation of the ball screw 10 drives the base plate 2 to move up and down, thereby realizing the lifting and lowering movement of the support column 4 and the lifting plate 8. The fixed frame provides a stable support foundation for the ball screw 10, ensuring its stability and reliability during rotation. This allows the entire lifting device to perform lifting operations smoothly and accurately, meeting the testing requirements at different heights during water level gauge testing.

[0053] The fixing frame includes a fixing plate 1, an aluminum profile, and a fixing seat 18. The fixing plate 1 and the aluminum profile are installed on the test trolley, and the fixing seat 18 is installed on the aluminum profile. The two ends of the ball screw 10 are respectively rotatably installed on the fixing plate 1 and the fixing seat 18. A threaded copper sleeve that mates with the ball screw is installed on the bottom support plate 2.

[0054] This structural design ensures the overall stability of the mounting frame, effectively supporting the weight of the lifting device and the equipment being tested. The mounting plate 1 is bolted to the chassis of the test carriage, providing auxiliary support for the entire lifting device. A screw support seat is mounted on the mounting plate 1, bolted to it to support the end of the ball screw 10. The base plate 2 is bolted to a threaded copper sleeve, which works in conjunction with the ball screw 10 to assist in lifting the central support column 4. The support column 4, mounting plate 1, and base plate 2 are all made of aluminum alloy, which is lightweight, high-strength, corrosion-resistant, and easy to process. Aluminum profiles are lightweight, high-strength, and easy to process, facilitating the installation and adjustment of the mounting base 18.

[0055] like Figure 9 As shown, a third motor 7 is installed on the fixed base 18, and the third motor 7 is used to drive the rotation of the ball screw 10; an encoder 9 is provided on the top of the ball screw 10, and the encoder 9 is used to detect the number of turns of the ball screw 10.

[0056] The third motor 7 provides power with a speed ratio of 7.5:1 and features a self-locking function. It converts the rotary motion into linear motion of the base plate 2 via the ball screw 10, thus achieving the lifting function of the lifting device. An encoder 9 mounted on the top of the ball screw 10 detects the number of rotations, accurately calculates the lifting height of the device, and feeds the data back to the host computer software. During water level gauge calibration, the lifting height can be precisely controlled according to actual testing requirements, ensuring calibration accuracy. Simultaneously, the encoder 9's feedback function allows for real-time monitoring of the lifting height, facilitating timely detection and correction of potential height deviations and improving the reliability of the testing work.

[0057] like Figure 1 , Figure 6 As shown, a guide rail 5 is fixedly installed on the inner side of the aluminum profile, and a slider 3 is fixedly installed on the side of the support column 4. The slider 3 is slidably installed on the guide rail 5.

[0058] The cooperation between guide rail 5 and slider 3 provides guidance for the lifting and lowering of support column 4, ensuring that support column 4 moves in a straight line during the lifting process and avoiding skewing or shaking. This not only improves the stability and safety of the lifting device, but also effectively reduces wear between support column 4 and guide rail 5, extending the service life of the device. In practical applications, guide rail 5 can be made of SCR guide rail, which has good straightness and high precision, ensuring the lifting accuracy of support column 4, thereby ensuring the accurate test position of the tested equipment such as water level gauge at different heights and improving the reliability of test results.

[0059] like Figure 2 As shown, a limit sensor 15 is provided on the top of the side of the aluminum profile, and an upper limit block 16 is provided on the upper part of the side of the support column 4, and a lower limit block 17 is provided on the lower part.

[0060] When the support column 4 rises to the position of the lower limit block 17 and moves to the position of the limit sensor 15, the lifting device stops rising; when it descends to the position of the upper limit block 16 and moves to the position of the limit sensor 15, the descent stops. This limit protection device can prevent the lifting device from excessively rising or falling due to program malfunction or operational errors, avoiding damage to the equipment and improving the safety of the device. For example, during equipment operation, if the control system malfunctions or the operator misoperates, the limit sensor 15 and the limit block can function promptly to ensure that the lifting device operates within a safe range, reducing the risk of equipment damage and personnel injury.

[0061] A handwheel 6 is rotatably mounted on the fixed base 18. The handwheel 6 is connected to the ball screw 10 through a helical gear set 11. A scale 12 is also provided on the side of the support column 4.

[0062] In the event of a malfunction in the electric lifting mechanism, manual lifting can be achieved by turning the handwheel 6, which in turn drives the ball screw 10 via the helical gear set 11. This ensures the normal operation of the testing process and improves the reliability and emergency response capabilities of the equipment. Simultaneously, the scale 12 clearly displays the lifting height of the support column 4, guaranteeing the accuracy of the lifting height. The helical gear set 11 has a 1:1 speed ratio, resulting in better structural stability, higher load-bearing capacity, and greater overlap, making it suitable for high-speed operation.

[0063] In summary, the lifting platform of this utility model can adjust its angle through the horizontal rotation mechanism 13, ensuring that it is perpendicular to the wall when calibrating the equipment at a parking location, thus ensuring the accuracy of the calibration and testing data.

[0064] The clamping mechanism 14 provided on the lifting plate 8 of this utility model can quickly assemble the equipment to be tested and calibrated into place and automatically complete the fixing and clamping work, saving manpower and material resources and improving the accuracy of testing and calibration.

[0065] This utility model's lifting device integrates manual and electric lifting into a single structure. Electric lifting is used during routine operations, while manual lifting can be used in case of malfunction, ensuring the normal progress of testing and significantly improving work efficiency. This utility model features a simple structure, convenient lifting adjustment, small size, light weight, and low cost.

[0066] This invention can control the lifting height through the encoder 9, and at the same time, a scale 12 is set on the support column 4 to ensure the accuracy of the lifting height and better meet the needs of testing.

[0067] This utility model features a ball screw 10 rotating in the middle and sliders 3 on both sides for guidance, ensuring smooth operation of the lifting device during up and down lifting, improving the detection accuracy of the system and the service life of the equipment, and avoiding deviations and jamming during the lifting process.

[0068] This utility model provides a limit block on the support column 4. When the limit block touches the limit sensor 15 during the up and down movement, it will stop running, preventing lifting failures caused by program malfunctions and greatly improving safety.

[0069] Although the specific embodiments of the present utility model have been described above in conjunction with the accompanying drawings, this is not intended to limit the scope of protection of the present utility model. Those skilled in the art should understand that various modifications or variations that can be made by those skilled in the art without creative effort based on the technical solution of the present utility model are still within the scope of protection of the present utility model.

Claims

1. An adjustable lifting device for a water level gauge testing trolley, comprising a support column and a lifting plate for mounting the equipment to be tested; characterized in that, A horizontal rotation mechanism is provided between the support column and the lifting plate; The horizontal rotation mechanism includes a fixed ring, a gear ring, a first motor, and a drive gear. The fixed ring is fixedly installed on the support column, the gear ring is rotatably connected to the fixed ring, and the lifting plate is fixedly installed on the gear ring. The first motor is fixedly mounted on the support column, and the drive gear is mounted on the first motor and meshes with the gear ring.

2. The adjustable lifting device for a water level gauge testing trolley as described in claim 1, characterized in that, The inner side of the fixing ring has symmetrically arranged mounting seats, which can be detachably installed on the two sides of the support column.

3. The adjustable lifting device for a water level gauge testing trolley as described in claim 2, characterized in that, A limiting ring is also provided on the inner side of the fixed ring, and a limiting plate is installed in the limiting ring. The output shaft of the first motor passes through the limiting plate and is rotatably connected to the limiting plate. The drive gear is installed on the output shaft of the first motor.

4. The adjustable lifting device for a water level gauge testing trolley as described in claim 1, characterized in that, The lifting plate is provided with a clamping mechanism for holding the device to be tested. The clamping mechanism includes clamping blocks, a guide rod, and a second motor. The guide rod is fixedly installed on the lifting plate. There are two clamping blocks, both of which are slidably installed on the guide rod. The second motor is fixedly installed on the lifting plate and is used to drive the two clamping blocks to move closer to or further away from the guide rod.

5. The adjustable lifting device for a water level gauge testing trolley as described in claim 1, characterized in that, The lifting device also includes a fixed frame, a ball screw, and a base plate. The fixed frame is fixedly installed on the test trolley, the ball screw is installed on the fixed frame, the base plate is installed on the ball screw, and the support column is installed on the base plate.

6. The adjustable lifting device for a water level gauge testing trolley as described in claim 5, characterized in that, The mounting bracket includes a mounting plate, an aluminum profile, and a mounting base. The mounting plate and the aluminum profile are mounted on the test trolley, and the mounting base is mounted on the aluminum profile. The two ends of the ball screw are rotatably mounted on the mounting plate and the mounting base, respectively. A threaded copper sleeve that mates with the ball screw is mounted on the base plate.

7. The adjustable lifting device for a water level gauge testing trolley as described in claim 6, characterized in that, A third motor is mounted on the fixed base, which drives the rotation of the ball screw; an encoder is provided on the top of the ball screw, which is used to detect the number of turns of the ball screw.

8. The adjustable lifting device for a water level gauge testing trolley as described in claim 6, characterized in that, A guide rail is fixedly installed on the inner side of the aluminum profile, and a slider is fixedly installed on the side of the support column. The slider is slidably installed on the guide rail.

9. The adjustable lifting device for a water level gauge testing trolley as described in claim 6, characterized in that, A limit sensor is provided at the top of the side of the aluminum profile, and an upper limit block is provided at the upper part and a lower limit block is provided at the lower part of the side of the support column.

10. The adjustable lifting device for a water level gauge testing trolley as described in claim 6, characterized in that, A handwheel is rotatably mounted on the fixed base, and the handwheel is connected to the ball screw through a helical gear set. A scale is also provided on the side of the support column.

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