A rod-mounted vibrating wire meter measuring device

Abstract

This utility model relates to a rod-mounted vibrating wire meter measuring device, the structure of which includes a connecting device, a vibrating wire meter, and gear slots disposed on the inner wall of the rod being measured. There are two gear slots symmetrically arranged on the inner wall of the rod, with the length direction of each gear slot aligned with the axial direction of the rod. A meshing gear is provided on one side of the inner wall of each gear slot. Connecting devices are respectively provided at both ends of the vibrating wire meter. Each connecting device includes a connecting seat and gear screws threaded to both sides of the connecting seat. Each gear screw includes a threaded stud and a meshing gear located at the top of the stud. The stud extends into the gear slot, and the meshing gear meshes with the meshing gear. This utility model symmetrically arranges the vibrating wire meter inside the rod being measured, effectively isolating environmental factors, improving measurement stability, extending service life, and reducing maintenance frequency.

Description

Technical Field

[0001] This utility model relates to a vibrating wire strain gauge, specifically a rod-integrated vibrating wire gauge measuring device. Background Technology

[0002] Traditional vibrating wire gauges, such as the vibrating wire surface strain gauge described in patent publication number CN213397035U, are typically externally mounted, fixed to the outer surface of a rod by welding or clamping. This arrangement has significant drawbacks: the sensor is constantly exposed to the outside, making it susceptible to external factors such as mechanical impact and environmental corrosion, resulting in poor measurement stability, short lifespan, and high maintenance frequency, while also affecting the appearance integrity of the rod. Although existing improvements, such as a protective device for surface vibrating wire strain gauges in patent publication number CN219810392U, alleviate the above problems to some extent by adding a protective structure, they fail to fundamentally solve the inherent defects of external sensor mounting and introduce derivative problems such as increased complexity of the protective structure and increased maintenance costs. Therefore, we need an internal vibrating wire gauge measurement device. Utility Model Content

[0003] The purpose of this invention is to provide a rod-integrated vibrating wire meter measuring device to solve the problem that existing traditional external vibrating wire meters are easily affected by environmental interference.

[0004] This utility model is implemented as follows: a rod-type built-in vibrating wire meter measuring device, including a connecting device, a vibrating wire meter, and a gear slot disposed on the inner wall of the rod being measured;

[0005] There are two gear slots, which are symmetrically arranged on the inner wall of the rod being measured. The length direction of the gear slots is consistent with the axial direction of the rod being measured. Meshing teeth are provided on one side of the inner wall of the gear slot.

[0006] A connecting device is provided at each end of the vibrating wire meter. The connecting device includes a connecting seat and a gear screw threaded to both sides of the connecting seat. The gear screw includes a threaded stud and a meshing gear located at the top of the stud.

[0007] The stud extends into the gear slot, and the meshing gear meshes with the meshing tooth profile.

[0008] As a further improvement of the rod-in-built vibrating wire measuring device of this utility model, the gear slot includes two symmetrically arranged L-shaped baffles, with a gap between the two L-shaped baffles for the stud to pass through, and meshing teeth are provided on the side wall of one of the L-shaped baffles along the length direction.

[0009] As a further improvement to the rod-integrated vibrating wire meter measuring device of this utility model, the thread pitch of the gear screws on the connecting devices at both ends of the vibrating wire meter is different.

[0010] As a further improvement to the rod-mounted vibrating wire meter measuring device of this utility model, there are two vibrating wire meters, which are arranged side by side, and the ends of the two vibrating wire meters are simultaneously connected to the connecting device.

[0011] As a further improvement to the rod-integrated vibrating wire meter measuring device of this utility model, the end of the vibrating wire meter passes through the connecting seat, and an anchoring screw is threaded onto the connecting seat to fix the vibrating wire meter to the connecting seat.

[0012] As a further improvement to the rod-mounted vibrating wire meter measuring device of this utility model, a through hole is opened in the non-load-bearing area of ​​the rod being measured for threading the cable of the vibrating wire meter.

[0013] This invention employs a novel installation method, symmetrically placing the vibrating wire meter inside the rod being measured, and preferentially selecting areas of concentrated stress distribution within the rod for installation. Because the vibrating wire meter is installed inside the rod, environmental factors are effectively isolated, improving measurement stability, extending service life, and reducing maintenance frequency.

[0014] This invention can be applied to engineering fields such as bridge health monitoring, safety assessment of building steel structures, and stability analysis of power transmission towers. Attached Figure Description

[0015] Figure 1 This is a perspective view of the present invention.

[0016] Figure 2 This is a cross-sectional view of the present invention.

[0017] Figure 3 This is an end view of the utility model.

[0018] Figure 4 This is a perspective view of the internal vibrating wire meter and connecting device of this utility model.

[0019] In the diagram: 1. Measured rod; 2. Vibrating wire meter; 3. Gear slot; 4. Connecting seat; 5. Gear screw; 6. Anchor screw; 7. Cable; 3-1. L-shaped plate; 3-2. Meshing tooth profile; 5-1. Screw; 5-2. Meshing gear. Detailed Implementation

[0020] The technical solution of this utility model will now be clearly and completely described with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of this utility model. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this utility model.

[0021] In the description of this utility model, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model. In addition, the terms "first," "second," and "third," etc., are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0022] The rod-mounted vibrating wire meter measuring device of this utility model mainly includes a connecting device, a vibrating wire meter, and a gear slot set on the inner wall of the rod being measured.

[0023] The rod being measured can be a round tube structure, a square tube structure, etc. There are two gear slots, which are symmetrically arranged on the inner wall of the rod being measured. The length direction of the gear slots is consistent with the axial direction of the rod being measured.

[0024] The gear slot is fixed to the rod during the manufacturing process, for example, by welding. This invention is suitable for shorter rods that are easy to fix with the gear slot or for rod structures assembled by welding. The position of the gear slot on the rod is determined according to design requirements, and is generally set in stress concentration areas.

[0025] The vibrating wire meter is existing technology; the model parameters of the vibrating wire meter should be selected according to the needs. Connecting devices are provided at both ends of the vibrating wire meter. Each connecting device includes a connecting seat and gear screws threaded onto both sides of the connecting seat. Both ends of the vibrating wire meter are connected and secured to gear slots via the gear screws on both sides, thereby fixing the vibrating wire meter to the inner wall of the measured rod, ensuring that the stress of the vibrating wire meter changes synchronously with that of the measured rod.

[0026] The end of the vibrating wire meter passes through the connecting seat, and an anchoring screw is threaded onto the connecting seat to fix the vibrating wire meter to the connecting seat.

[0027] The gear slot includes two symmetrically arranged L-shaped baffles with a gap between them for the stud to pass through. One of the L-shaped baffles has meshing teeth along its length on its side wall. The gear screw includes a threaded stud and a meshing gear at the top of the stud. When the vibratory wire meter is placed inside the rod being measured, the stud passes through the gap between the two L-shaped baffles, and the meshing gear is located within the slot formed by the two L-shaped baffles, engaging with the meshing teeth. As the vibratory wire meter moves axially along the rod being measured, the meshing gear moves and rotates along the meshing teeth, thereby driving the stud to rotate and gradually tightening the gear screw, ultimately fixing the connecting device to the gear slot.

[0028] Because the gear screws at both ends of the vibrating wire meter travel different distances and rotate different numbers of times during the fixing process, differentiated thread parameters are used to ensure that the gear screws at both ends of the vibrating wire meter are locked synchronously. For example, different pitch designs are used, so that the thread of the gear screw that enters the gear slot first is a tight thread with a smaller pitch, while the thread of the gear screw that enters the gear slot later is a standard thread with a larger pitch. The pitches of the two can be matched as needed. In this way, when the vibrating wire meter advances a certain distance along the gear slot, the locking of the gear screws at both ends is basically the same, ensuring that the two ends of the device are locked synchronously.

[0029] In a preferred embodiment of this invention, two vibrating wire meters are arranged side by side, with the ends of both meters simultaneously connected to a connecting device. The two vibrating wire meters use identical models and parameters to ensure measurement consistency. The measurement results are determined based on the data obtained from both meters, and the redundant design of the dual-vibrating wire meters reduces measurement errors.

[0030] Through holes are made in the non-load-bearing areas of the tested rod to reduce the impact on the tested rod. The through holes are used to connect the vibrating wire meter cable. The vibrating wire meter cable adopts a double-layer shielding design, with the outer layer wrapped in corrosion-resistant corrugated tubing, and the gaps in the through holes are filled with sealant.

[0031] Because this invention is located inside the rod being measured, it can effectively isolate environmental factors, improve measurement stability, extend service life, and reduce maintenance frequency.

[0032] The above embodiments are only used to illustrate the technical solutions of this utility model, and are not intended to limit it. Although the utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some or all of the technical features therein. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of this utility model.

Claims

1. A rod-mounted vibrating wire meter measuring device, characterized in that, Includes a connecting device, a vibrating wire meter, and a gear slot set on the inner wall of the rod being measured; There are two gear slots, which are symmetrically arranged on the inner wall of the rod being measured. The length direction of the gear slots is consistent with the axial direction of the rod being measured. Meshing teeth are provided on one side of the inner wall of the gear slot. A connecting device is provided at each end of the vibrating wire meter. The connecting device includes a connecting seat and a gear screw threaded to both sides of the connecting seat. The gear screw includes a threaded stud and a meshing gear located at the top of the stud. The stud extends into the gear slot, and the meshing gear meshes with the meshing tooth profile.

2. The rod-embedded vibrating wire meter measuring device according to claim 1, characterized in that, The gear slot includes two symmetrically arranged L-shaped baffles, with a gap between the two L-shaped baffles for the stud to pass through, and meshing teeth are provided on the side wall of one of the L-shaped baffles along the length direction.

3. The rod-embedded vibrating wire meter measuring device according to claim 1, characterized in that, The thread pitch of the gear screws on the connecting devices at both ends of the vibrating string meter is different.

4. The rod-embedded vibrating wire meter measuring device according to claim 1, characterized in that, There are two vibrating wire meters, which are arranged side by side, and the ends of the two vibrating wire meters are simultaneously connected to the connecting device.

5. The rod-embedded vibrating wire meter measuring device according to claim 1, characterized in that, The end of the vibrating wire meter passes through the connecting seat, and an anchoring screw is threaded onto the connecting seat to fix the vibrating wire meter to the connecting seat.

6. The rod-embedded vibrating wire meter measuring device according to claim 1, characterized in that, A through hole is made in the non-load-bearing area of ​​the rod being tested for threading the cable of the vibrating wire meter.

Images