A clamping device for calibrating wind speed sensors based on an elastic push rod

Abstract

A clamping device for calibrating wind speed sensors based on an elastic push rod is disclosed. It includes an outer sealing plate of the wind tunnel, an inner sealing plate of the wind tunnel, a support plate, a fixed clamp, a movable clamp, a guide rail, and a transmission mechanism. The outer and inner sealing plates are located on the outer and inner circumferential surfaces of the wind tunnel, respectively. The support plate consists of a support base plate and first and second support side plates, with the bottom surface of the support base plate fixed to the outer surface of the inner sealing plate. The guide rail is connected at both ends to the lower sides of the first and second support side plates, respectively. The fixed clamp is mounted on the second support side plate. The movable clamp is mounted on the guide rail. The transmission mechanism is mounted on the first support side plate, with its inner end connected to the upper part of the movable clamp. This invention allows the movable clamp to be pushed forward by operating a rotating handle. The elastic push rod can clamp wind speed sensors of any shape. After locking, the shape of the front end face of the elastic push rod is maintained. For wind speed sensors of the same model, no repeated adjustments are required. It has advantages such as convenient adjustment, strong adaptability, stable and reliable clamping, and long service life.

Description

Technical Field

[0001] This utility model belongs to the field of calibration technology for safety protection devices in water transport ports, and specifically relates to a clamping device for calibrating wind speed sensors based on an elastic top rod. Background Technology

[0002] To adapt to the growing domestic and international trade demands and promote the efficient and sustainable development of the transportation industry, it is essential to optimize the functional layout of ports, promote the integration of port resources, strengthen integrated operations, and enhance the comprehensive service capabilities of ports. As a key node in water transport, the safe and efficient operation of ports is crucial to the stability of the entire transportation system. Wind speed, as a significant environmental factor affecting port operational safety, ship navigation safety, and cargo loading and unloading efficiency, necessitates accurate wind speed measurement to ensure stable port operations. Currently, all large port facilities and equipment are required to be equipped with wind speed sensors with forecasting and warning functions. During typhoon and gust seasons, these sensors should be inspected at least monthly, and at least quarterly during other periods to ensure their performance meets port safety protection requirements.

[0003] Currently, wind speed sensor calibration is primarily performed in wind tunnels. GB / T 33693-2017 "Test Methods for Ultrasonic Anemometers," JJF 1935—2021 "Calibration Specification for Cup-Type Anemometers of Automatic Weather Stations," and JJF 1934—2021 "Calibration Specification for Ultrasonic Anemometers and Wind Direction Sensors" provide calibration methods for wind speed sensors in wind tunnels. These methods involve fixing the wind speed sensor to the working section of the wind tunnel using a clamping device (ensuring the stability and uniformity of wind speed meet the specifications), and selecting calibration points within the full range of the wind speed sensor for calibration. Ports are typically built in inland or coastal areas, where wind speeds are higher than inland areas during port machinery operations. Therefore, wind speed sensors are usually required to monitor wind speeds within a range of at least 55 m / s. However, due to differences in the shape of wind speed sensors produced by different manufacturers, clamping the sensors during calibration can be difficult, thus affecting calibration accuracy. Chinese Patent Application Publication No. 217842643 discloses a wind speed sensor calibration device. This device uses a mounting ring on the sidewall of a wind tunnel, through which the probe of the wind speed sensor to be calibrated extends into the wind tunnel and is fixed by an elastic seal. While this device achieves a certain degree of wind speed sensor installation, it has a narrow adaptability range for different sensor shapes. When the probe shape is unusual or its size exceeds a certain range, the mounting ring and elastic seal cannot achieve stable fixation, making it difficult to meet the clamping requirements of diverse wind speed sensors. Chinese Patent Application No. 202221140044.0 discloses another wind speed sensor calibration device, which adopts an integrated design of the wind tunnel and mounting cylinder. It achieves sealing through the elastic fit between the sealing cover and the probe, and is equipped with multiple pressure sensors to monitor the airflow distribution within the wind tunnel in real time. However, this device only supports specific types of probes. For other specifications of wind speed sensors, a custom adapter is required, which not only increases the cost but also complicates the operation. When faced with wind speed sensors of various shapes, its adaptability is clearly insufficient, and it cannot achieve universal clamping and calibration of wind speed sensors of different shapes. Summary of the Invention

[0004] To address the aforementioned problems, the purpose of this invention is to provide a clamping device for calibrating a wind speed sensor based on an elastic top rod.

[0005] To achieve the above objectives, the wind speed sensor calibration clamping device based on an elastic top rod provided by this utility model is installed on a cylindrical wind tunnel, including an outer sealing plate, an inner sealing plate, a support plate, a fixing clamp, a movable clamp, a guide rail, and a transmission mechanism; wherein, the outer sealing plate and the inner sealing plate are respectively disposed on the outer circumferential surface and the inner circumferential surface of the wind tunnel, and are clamped to the circumferential wall of the wind tunnel by screws penetrating the circumferential wall of the wind tunnel; the support plate is a U-shaped structure composed of a support base plate, a first support side plate, and a second support side plate, which... The bottom surface of the central support base plate is fixed to the outer surface of the sealing disc inside the wind tunnel, and a screw hole is formed on the upper part of the first support side plate; the guide rail includes a first guide rail and a second guide rail arranged parallel to each other in the horizontal direction, and the two ends of the first guide rail and the second guide rail are respectively connected to the lower two sides of the first support side plate and the second support side plate; the fixed clamp is installed on the upper part of the inner side of the second support side plate; the lower part of the movable clamp is slidably installed on the two guide rails and is correspondingly arranged with the fixed clamp; the transmission mechanism is rotatably installed on the first support side plate, and its inner end is connected to the upper part of the movable clamp.

[0006] The fixing clamp includes a first base, a first elastic push rod, and a first locking handle. The outer end face of the first base is fixed to the upper inner side of the second support side plate. The middle of the inner end face is recessed to form a first groove, and a threaded hole communicating with the first groove is formed in the middle of one side face. The first elastic push rod includes multiple elastic protrusions horizontally embedded in the first groove in a matrix configuration. Each elastic protrusion consists of a steel ball head and a built-in spring. One end of the built-in spring is connected to the bottom surface of the first groove, and the other end is connected to the steel ball head. The steel ball head can extend out of the first groove or retract into the first groove. The first locking handle has an L-shaped rod structure. One rod is threaded into the threaded hole of the first base, and its inner end can abut against the steel ball head. The other rod is located on the outer side of the first base.

[0007] The movable clamp includes a second base, a second elastic push rod, a second locking handle, a first slider, and a second slider. The first slider and the second slider are slidably mounted on the first guide rail and the second guide rail, respectively. The bottom surface of the second base is fixed to the first slider and the second slider on both sides, respectively. The inner end face is recessed inward to form a second groove, and a screw hole communicating with the second groove is formed in the middle of one side. The second elastic push rod includes multiple elastic protrusions horizontally embedded in the second groove in a matrix. Each elastic protrusion consists of a steel ball head and a built-in spring. One end of the built-in spring is connected to the bottom surface of the second groove, and the other end is connected to the steel ball head. The steel ball head can extend out of the second groove or retract into the second groove. The second locking handle is an L-shaped rod structure. One rod is threaded into the screw hole of the second base and its inner end can abut against the steel ball head. The other rod is located on the outside of the second base.

[0008] The transmission mechanism includes a rotary handle, a self-locking screw, and an end bearing; the end bearing is installed on the upper part of the outer side surface of the second base; the middle part of the self-locking screw is threaded into the screw hole of the first support side plate, the inner end is set in the shaft hole of the end bearing, and the outer end is connected to the rotary handle.

[0009] The positions of the first elastic push rod and the second elastic push rod correspond to each other.

[0010] The clamping device for calibrating wind speed sensors based on an elastic top rod provided by this utility model has the following beneficial effects: by operating the rotating handle to push the movable clamp forward, the elastic top rod can clamp wind speed sensors of any shape. After locking, the shape of the front end face of the elastic top rod can be maintained. For wind speed sensors of the same model, there is no need for repeated adjustment. It has outstanding advantages such as convenient adjustment, strong adaptability, stable and reliable clamping, and long service life. Therefore, it has good promotion and application value. Attached Figure Description

[0011] Figure 1 A perspective view of the clamping device for calibrating a wind speed sensor based on an elastic top rod provided by this utility model.

[0012] Figure 2 This is a perspective view of the clamping device for calibrating a wind speed sensor based on an elastic top rod provided by this utility model, viewed from another angle. Detailed Implementation

[0013] The clamping device for calibrating wind speed sensors based on elastic top rods provided by this utility model will be described in detail below with reference to the accompanying drawings and specific embodiments.

[0014] like Figure 1 and Figure 2As shown, the wind speed sensor calibration clamping device based on an elastic top rod provided by this utility model is installed on a cylindrical wind tunnel, including an outer sealing plate 100, an inner sealing plate 200, a support plate 300, a fixing clamp 400, a movable clamp 500, a guide rail 600, and a transmission mechanism 700; wherein, the outer sealing plate 100 and the inner sealing plate 200 are respectively disposed on the outer circumferential surface and the inner circumferential surface of the wind tunnel, and are clamped to the circumferential wall of the wind tunnel by screws penetrating the circumferential wall of the wind tunnel; the support plate 300 is a U-shaped structure composed of a support base plate 3001, a first support side plate 3002, and a second support side plate 3003, wherein the bottom surface of the support base plate 3001 is fixed to the inner sealing plate 200. On the outer side surface of 00, and on the upper part of the first support side plate 3002, a screw hole is formed; the guide rail 600 includes a first guide rail 6001 and a second guide rail 6002 arranged parallel to each other in the horizontal direction, and the two ends of the first guide rail 6001 and the second guide rail 6002 are respectively connected to the lower two sides of the first support side plate 3002 and the second support side plate 3003; the fixed clamp 400 is installed on the upper part of the inner side surface of the second support side plate 3003; the lower part of the movable clamp 500 is slidably installed on the two guide rails 600 and is correspondingly arranged with the fixed clamp 400; the transmission mechanism 700 is rotatably installed on the first support side plate 3002, and its inner end is connected to the upper part of the movable clamp 500, for controlling the movable clamp 500 to move forward and backward on the guide rail 600.

[0015] The fixing clamp 400 includes a first base 4001, a first elastic push rod 4002, and a first locking handle 4003. The outer end face of the first base 4001 is fixed to the upper inner side of the second support side plate 3003. A first groove is formed inwardly at the center of the inner end face, and a screw hole communicating with the first groove is formed at the center of one side face. The first elastic push rod 4002 includes multiple elastic protrusions horizontally embedded in the first groove in a matrix configuration. Each elastic protrusion consists of a steel ball head and a built-in spring. One end of the built-in spring is connected to the bottom surface of the first groove, and the other end is connected to the steel ball head. The steel ball head can extend out of the first groove or retract into the first groove. The first locking handle 4003 has an L-shaped rod structure. One rod is threaded into the screw hole of the first base 4001, and its inner end can abut against the steel ball head. The other rod is located on the outside of the first base 4001 for operation by the operator.

[0016] The movable clamp 500 includes a second base 5001, a second elastic push rod 5002, a second locking handle 5003, a first slider 5004, and a second slider 5005; wherein the first slider 5004 and the second slider 5005 are slidably mounted on the first guide rail 6001 and the second guide rail 6002 respectively; the bottom surface of the second base 5001 is fixed to the first slider 5004 and the second slider 5005 on both sides respectively, and a second groove is formed inwardly in the middle of the inner end face, and a screw hole communicating with the second groove is formed in the middle of one side. The second elastic push rod 5002 includes multiple elastic protrusions horizontally embedded in the second groove in a matrix form; each elastic protrusion consists of a steel ball head and a built-in spring, one end of the built-in spring is connected to the bottom surface of the second groove, and the other end is connected to the steel ball head, and the steel ball head can extend out of the second groove or retract into the second groove; the second locking handle 5003 has an L-shaped rod structure, one rod is threaded into the screw hole of the second base 5001 and its inner end can abut against the steel ball head, and the other rod is located on the outside of the second base 5001 for operation by the operator.

[0017] The transmission mechanism 700 includes a rotary handle 7001, a self-locking screw 7002, and an end bearing 7003; the end bearing 7003 is installed on the upper part of the outer side surface of the second base 5001; the middle part of the self-locking screw 7002 is threaded into the screw hole of the first support side plate 3002, the inner end is set in the shaft hole of the end bearing 7003, and the outer end is connected to the rotary handle 7001.

[0018] The positions of the first elastic push rod 4002 and the second elastic push rod 5002 correspond to each other.

[0019] The method of using the clamping device for calibrating wind speed sensors based on an elastic top rod provided by this utility model is described below:

[0020] Before the test, the operator first manually rotates the handle 7001 in the forward direction. Driven by the transmission mechanism 700, the movable clamp 500 moves outward along the guide rail 600, converting the rotational force of the transmission mechanism 700 into linear displacement of the movable clamp 500. This separates the fixed clamp 400 and the movable clamp 500 by a certain distance. Then, the probe of the wind speed sensor under test is placed between the fixed clamp 400 and the movable clamp 500. The handle 7001 is then rotated in the reverse direction, causing the movable clamp 500 to move towards the fixed clamp 400, until the first elastic push rod 4002 and the second elastic push rod... The outer end of the push rod 5002 clamps the probe; continue rotating the handle 7001 in the opposite direction. Under the pressure of the probe, the built-in spring is compressed, causing the first elastic push rod 4002 and the second elastic push rod 5002 to retract into their respective grooves, thus firmly clamping the probe; then rotate the first locking handle 4003 and the second locking handle 5003 to lock the first elastic push rod 4002 and the second elastic push rod 5002; due to the self-locking screw 7002's self-locking characteristic, the wind speed sensor is now clamped and will not loosen, allowing the test to begin. After the test, rotate the handle 7001 in the forward direction again until the probe is released; when the compression force disappears, the front part of the elastic head will extend out of the first and second grooves under the elastic force of the built-in spring. Furthermore, each elastic head can be individually stressed to accommodate wind speed sensors of any shape.

Claims

1. A clamping device for calibrating a wind speed sensor based on an elastic push rod, mounted on a cylindrical wind tunnel, characterized in that: The clamping device for calibrating the wind speed sensor based on the elastic top rod includes an outer sealing plate (100), an inner sealing plate (200), a support plate (300), a fixing clamp (400), a movable clamp (500), a guide rail (600), and a transmission mechanism (700); wherein the outer sealing plate (100) and the inner sealing plate (200) are respectively disposed on the outer circumferential surface and the inner circumferential surface of the wind tunnel, and the outer sealing plate (100) and the inner sealing plate (200) are clamped to the circumferential wall of the wind tunnel by screws penetrating the circumferential wall of the wind tunnel; the support plate (300) is a U-shaped structure composed of a support base plate (3001), a first support side plate (3002), and a second support side plate (3003), wherein the bottom surface of the support base plate (3001) is fixed to the inner sealing plate (3003). On the outer side surface of the first support side plate (3002), a screw hole is formed on the upper part of the first support side plate (3002); the guide rail (600) includes a first guide rail (6001) and a second guide rail (6002) arranged parallel to each other in the horizontal direction, and the two ends of the first guide rail (6001) and the second guide rail (6002) are respectively connected to the lower two sides of the first support side plate (3002) and the second support side plate (3003); the fixed clamp (400) is installed on the upper part of the inner side surface of the second support side plate (3003); the lower part of the movable clamp (500) is slidably installed on the two guide rails (600) and is correspondingly arranged with the fixed clamp (400); the transmission mechanism (700) is rotatably installed on the first support side plate (3002) and its inner end is connected to the upper part of the movable clamp (500).

2. The clamping device for calibrating a wind speed sensor based on an elastic top rod according to claim 1, characterized in that: The fixing clamp (400) includes a first base (4001), a first elastic push rod (4002), and a first locking handle (4003); wherein, the outer end face of the first base (4001) is fixed to the upper part of the inner side of the second support side plate (3003), the middle part of the inner end face is recessed to form a first groove, and a screw hole communicating with the first groove is formed in the middle part of one side; the first elastic push rod (4002) includes a plurality of elastic protrusions horizontally embedded in the first groove in a matrix form; each elastic protrusion consists of a steel ball head and a built-in spring, one end of the built-in spring is connected to the bottom surface of the first groove, and the other end is connected to the steel ball head, and the steel ball head can extend out of the first groove or retract into the first groove; the first locking handle (4003) is an L-shaped rod structure, one rod is threaded into the screw hole of the first base (4001) and the inner end can abut against the steel ball head, and the other rod is located on the outside of the first base (4001).

3. The clamping device for calibrating a wind speed sensor based on an elastic top rod according to claim 2, characterized in that: The movable clamp (500) includes a second base (5001), a second elastic push rod (5002), a second locking handle (5003), a first slider (5004), and a second slider (5005); wherein the first slider (5004) and the second slider (5005) are slidably mounted on the first guide rail (6001) and the second guide rail (6002), respectively; the bottom surface of the second base (5001) is fixed on the first slider (5004) and the second slider (5005) on both sides, and the inner end face is recessed inward to form a second groove, and one side face forms a second groove. There is a screw hole communicating with the second groove; the second elastic push rod (5002) includes a plurality of elastic protrusions horizontally embedded in the second groove in a matrix form; each elastic protrusion consists of a steel ball head and a built-in spring, one end of the built-in spring is connected to the bottom surface of the second groove, and the other end is connected to the steel ball head, and the steel ball head can extend out of the second groove or retract into the second groove; the second locking handle (5003) is an L-shaped rod structure, one rod is threaded into the screw hole of the second base (5001) and the inner end can abut against the steel ball head, and the other rod is located on the outside of the second base (5001).

4. The clamping device for calibrating a wind speed sensor based on an elastic top rod according to claim 1, characterized in that: The transmission mechanism (700) includes a rotary handle (7001), a self-locking screw (7002), and an end bearing (7003); the end bearing (7003) is installed on the upper part of the outer side surface of the second base (5001); the middle part of the self-locking screw (7002) is threaded into the screw hole of the first support side plate (3002), the inner end is set in the shaft hole of the end bearing (7003), and the outer end is connected to the rotary handle (7001).

5. The clamping device for calibrating a wind speed sensor based on an elastic top rod according to claim 3, characterized in that: The positions of the first elastic push rod (4002) and the second elastic push rod (5002) correspond to each other.

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