Hand-held propeller current speed measuring device

Abstract

The utility model discloses a handheld type whirls formula water flow speed measuring device, including the guide rod of hollow structure, the guide rod slidingly arranged in the fixed link, and the guide rod's protruding end is installed with whirls, and the end portion of guide rod protruding end is installed with sensor, and the sensor is connected with handheld host computer through cable, the fixed link and the guide rod are equipped with the screw rod, and the top end portion of fixed link is fixedly installed with the support block, and the top end portion of guide rod is fixedly installed with the nut, and the screw rod is rotatably installed in the support block along the vertical direction, and the screw rod is connected with the nut screw thread. The water flow speed measuring device can make the detection rod realize continuous, fine length adjustment, satisfy high accuracy adjustment demand, can also improve the durability, and ensure the stability of detection rod.

Description

Technical Field

[0001] This utility model relates to a handheld propeller-type water flow velocity measuring device, belonging to the field of water flow velocity measuring technology. Background Technology

[0002] The handheld propeller-type water flow velocity measuring device is a portable, mechanical instrument for measuring water flow velocity, widely used in hydrological surveying, environmental monitoring, water conservancy projects, irrigation management, fisheries research, and other fields. It calculates the flow velocity by measuring the rotational speed of the propeller at the end of the measuring rod driven by the water flow.

[0003] Currently, in order to adapt to the measurement of water flow velocity at different depths, the detection rod usually adopts a fixed snap-on structure for length adjustment. Although the fixed snap-on structure is relatively simple to operate, it still has the following significant disadvantages:

[0004] 1. Limited adjustment precision: Fixed snap-fit ​​structures typically achieve adjustment through preset snap-fit ​​positions, which are discrete and cannot achieve continuous, precise length adjustment. This structure cannot meet the requirements of inspection tasks demanding high-precision adjustment.

[0005] 2. It has poor durability. Frequent adjustments to the position can cause the buckle to wear or loosen, which in turn affects the stability and accuracy of the detection rod. After long-term use, the buckle may fail due to wear and need to be replaced or repaired.

[0006] In conclusion, the existing technology obviously has inconveniences and defects in practical use, so it is necessary to improve it. Utility Model Content

[0007] This invention addresses the shortcomings of the prior art by providing a handheld propeller-type water flow velocity measuring device, which enables continuous and precise length adjustment of the detection rod to meet high-precision adjustment requirements; it also improves durability and ensures the stability of the detection rod.

[0008] To solve the above technical problems, the present invention adopts the following technical solution:

[0009] A handheld propeller-type water flow velocity measuring device includes a hollow guide rod that is slidably mounted inside a fixed rod. A propeller is mounted on the extended end of the guide rod, and a sensor is installed inside the extended end of the guide rod. The sensor is connected to a handheld main unit via a cable. A lead screw is inserted through the fixed rod and the guide rod. A support block is fixedly installed at the top of the fixed rod, and a nut is fixedly installed at the top of the guide rod. The lead screw is rotatably mounted in the support block in the vertical direction, and the lead screw is threadedly connected to the nut.

[0010] Furthermore, a handle is fitted onto the top of the fixing rod.

[0011] Furthermore, a guide groove is provided on the outer wall of the guide rod, and the guide groove is arranged along the length direction of the guide rod.

[0012] Furthermore, a slider is installed inside the bottom end of the fixing rod. The slider is located inside the guide groove and is connected to the fixing rod by fastening pins.

[0013] Furthermore, a crank handle is installed at the top of the lead screw.

[0014] Furthermore, a spiral sheath is installed between the support block and the nut, and part of the cable structure passes through the spiral sheath.

[0015] Furthermore, the top end of the spiral sleeve is fixedly connected to the support block, the bottom end of the spiral sleeve is fixedly connected to the nut, and the spiral sleeve is fitted onto the main body of the lead screw.

[0016] Furthermore, the spiral sheath is made of a highly elastic material in a continuous spiral shape.

[0017] Furthermore, the outer walls of both the guide rod and the fixing rod are provided with scales.

[0018] Compared with the prior art, the present invention, by adopting the above technical solution, has the following advantages:

[0019] The guide rod and the fixed rod form a telescopic detection rod structure. By turning the handle, the nut moves up and down along the screw, which in turn drives the guide rod to slide along the fixed rod. This allows for continuous and precise length adjustment of the detection rod, facilitating the measurement of water flow velocity at different depths and meeting high-precision adjustment requirements.

[0020] The cooperation between the slider and the guide groove ensures that the guide rod slides smoothly along the straight line of the fixed rod; by passing part of the cable structure through the spiral sheath, the length of the cable adapts to the change in the length of the telescopic rod; this utility model eliminates the need for frequent adjustment of the buckle, avoids wear or loosening problems, improves durability, and ensures the stability of the detection rod.

[0021] The present invention will now be described in detail with reference to the accompanying drawings and embodiments. Attached Figure Description

[0022] Figure 1 This is a schematic diagram of the structure of this utility model;

[0023] Figure 2 This is an enlarged view of the lower structure of this utility model;

[0024] Figure 3 This is a schematic diagram of the internal structure of this utility model;

[0025] Figure 4 This is a schematic diagram of the bottom structure of the guide rod;

[0026] Figure 5 This is a schematic diagram of the top structure of the fixed rod.

[0027] In the diagram, 1-fixed rod, 2-guide rod, 3-propeller, 4-handle, 5-guide groove, 6-slider, 7-fastening pin, 8-sensor, 9-cable, 10-handheld host, 11-lead screw, 12-nut, 13-support block, 14-crank handle, 15-spiral sleeve. Detailed Implementation

[0028] To provide a clearer understanding of the technical features, objectives, and effects of this utility model, the specific embodiments of this utility model are now described with reference to the accompanying drawings.

[0029] like Figures 1-5 As shown in the figure, this utility model provides a handheld propeller-type water flow velocity measuring device, including a hollow guide rod 2, which is slidably disposed in a fixed rod 1. A propeller 3 is installed on the extended end of the guide rod 2, and a handle 4 is sleeved on the top end of the fixed rod 1.

[0030] A sensor 8 for detecting the rotational speed of the propeller 3 is installed inside the extended end of the guide rod 2. The sensor 8 is connected to the handheld host 10 via a cable 9.

[0031] The outer wall of the guide rod 2 is provided with a guide groove 5, which is arranged along the length of the guide rod 2.

[0032] A slider 6 is installed inside the bottom end of the fixed rod 1. The slider 6 is located inside the guide groove 5 and is connected to the fixed rod 1 by a fastening pin 7. The cooperation between the slider 6 and the guide groove 5 ensures that the guide rod 2 slides smoothly along the straight line of the fixed rod 1.

[0033] A lead screw 11 is inserted inside the fixed rod 1 and the guide rod 2. A support block 13 is fixedly installed inside the top part of the fixed rod 1, and a nut 12 is fixedly installed inside the top part of the guide rod 2. The lead screw 11 is rotatably installed inside the support block 13 in the vertical direction, and the lead screw 11 is threadedly connected to the nut 12.

[0034] A crank 14 is mounted on the top of the lead screw 11. Turning the crank 14 provides power for the guide rod 2 to slide along the fixed rod 1.

[0035] A spiral sheath 15 is installed between the support block 13 and the nut 12. Part of the cable 9 is passed through the spiral sheath 15. The top end of the spiral sheath 15 is fixedly connected to the support block 13, and the bottom end of the spiral sheath 15 is fixedly connected to the nut 12. The spiral sheath 15 is sleeved on the main body of the lead screw 11.

[0036] The spiral sheath 15 is made of a high-elasticity material in a continuous spiral shape. When compressed axially, the spiral rings overlap, and when stretched, they expand, so that the internal cable 9 can adapt to the expansion and contraction of the guide rod 2 along the fixed rod 1.

[0037] Both the guide rod 2 and the fixing rod 1 have graduations on their outer walls (the graduations are not shown in the figure). The operator can visually read the graduations on the guide rod 2 and the fixing rod 1 to obtain the length of the overall telescopic detection rod.

[0038] The specific working principle of this utility model is as follows:

[0039] During speed measurement, hold the handle 4 with one hand and the handheld host 10 with the other hand. Place the propeller 3 into the water flow to be measured. The water flow drives the propeller 3 to rotate. The sensor 8 transmits the rotation signal to the handheld host 10 through the cable 9. The processing module inside the handheld host 10 calculates the water flow speed, which is displayed on the screen on the handheld host 10.

[0040] In this invention, the guide rod 2 and the fixed rod 1 form a telescopic detection rod structure. By rotating the crank 14, the nut 12 moves up and down along the lead screw 11, thereby driving the guide rod 2 to slide along the fixed rod 1. This allows for continuous and precise length adjustment of the detection rod, facilitating the measurement of water flow velocity at different depths and meeting high-precision adjustment requirements. The cooperation between the slider 6 and the guide groove 5 ensures that the guide rod 2 slides smoothly along the straight line of the fixed rod 1. By passing part of the cable 9 through the spiral sheath 15, the length of the cable 9 adapts to changes in the length of the detection rod.

[0041] The above description provides examples of the preferred embodiments of this utility model. Any aspects not detailed herein are common knowledge to those skilled in the art. The scope of protection of this utility model is determined by the claims. Any equivalent modifications based on the technical teachings of this utility model are also within the scope of protection of this utility model.

Claims

1. A handheld propeller-type water flow velocity measuring device, characterized in that: The device includes a hollow guide rod (2), which is slidably disposed inside a fixed rod (1). A propeller (3) is installed on the extended end of the guide rod (2). A sensor (8) is installed inside the extended end of the guide rod (2). The sensor (8) is connected to a handheld host (10) via a cable (9). A lead screw (11) is inserted inside the fixed rod (1) and the guide rod (2). A support block (13) is fixedly installed inside the top part of the fixed rod (1). A nut (12) is fixedly installed inside the top part of the guide rod (2). The lead screw (11) is rotatably installed in the support block (13) in the vertical direction, and the lead screw (11) is threadedly connected to the nut (12).

2. The handheld propeller-type water flow velocity measuring device as described in claim 1, characterized in that: A handle (4) is fitted onto the top of the fixed rod (1).

3. The handheld propeller-type water flow velocity measuring device as described in claim 1, characterized in that: The guide rod (2) has a guide groove (5) on its outer wall, and the guide groove (5) is set along the length direction of the guide rod (2).

4. The handheld propeller-type water flow velocity measuring device as described in claim 3, characterized in that: A slider (6) is installed inside the bottom end of the fixed rod (1). The slider (6) is located inside the guide groove (5). The slider (6) is connected to the fixed rod (1) by fastening pins (7).

5. The handheld propeller-type water flow velocity measuring device as described in claim 1, characterized in that: A crank handle (14) is installed at the top of the lead screw (11).

6. The handheld propeller-type water flow velocity measuring device as described in claim 1, characterized in that: A spiral sheath (15) is installed between the support block (13) and the nut (12), and part of the cable (9) is passed through the spiral sheath (15).

7. The handheld propeller-type water flow velocity measuring device as described in claim 6, characterized in that: The top end of the spiral sleeve (15) is fixedly connected to the support block (13), the bottom end of the spiral sleeve (15) is fixedly connected to the nut (12), and the spiral sleeve (15) is sleeved on the main body of the screw (11).

8. The handheld propeller-type water flow velocity measuring device as described in claim 6, characterized in that: The spiral sheath (15) is made of a high-elasticity material in a continuous spiral shape.

9. The handheld propeller-type water flow velocity measuring device as described in claim 1, characterized in that: The guide rod (2) and the fixing rod (1) are both provided with scales on their outer walls.

Images