Strain displacement monitoring device for large-span prestressed fish-belly steel support

Abstract

The utility model discloses a strain displacement monitoring device for a large-span prestressed fish-bellied steel support, which comprises a monitoring mechanism. The monitoring mechanism comprises a steel shell, a ball body movably clamped in the steel shell, a supporting rod vertically penetrating through the ball body, two abutting discs movably connected with the two ends of the supporting rod correspondingly, and displacement sensors installed on the inner sides of the abutting discs, and the two abutting discs are attached to the two ends of the steel shell correspondingly. According to the device, the device abuts against the bottom of the fish belly steel, when the fish belly steel displaces, force generated by displacement affects movement of the supporting rod through the abutting discs making contact with the fish belly steel, the supporting rod moves left or right or front or back under supporting of the ball, then the two abutting discs move along the end face of the steel shell at the same time, and during the period, the supporting rod moves left or right or front or back. And the two displacement sensors are used for monitoring the displacement condition, so that the accuracy of monitoring operation is ensured.

Description

Technical Field

[0001] This utility model relates to the field of displacement monitoring technology, specifically a strain displacement monitoring device for a large-span prestressed fish-belly steel support. Background Technology

[0002] "Fish belly steel" usually refers to a type of fish belly-shaped steel beam structure. Its name comes from its cross-sectional shape, which resembles the belly of a fish—wide and thick in the middle and gradually narrowing at both ends. This design optimizes stress distribution, maintaining structural strength while reducing material usage.

[0003] Application number CN201920850596.2 discloses a surface displacement monitoring device, including a protective mechanism, two displacement transmission modules, and a displacement sensing module. This device converts displacement parameters into the elastic potential energy of a spring through the displacement transmission modules. This elastic potential energy induces strain in the displacement sensing module. The displacement sensing module is equipped with a grating slot for mounting a fiber Bragg grating. The fiber Bragg grating can promptly sense the strain of the module, thereby achieving real-time monitoring of surface displacement in infrastructure such as old buildings or bridges. However, in practical use, because the spring itself has restorative properties, it can restrict the movement of the protective cover, leading to monitoring failure when slight displacement occurs. Utility Model Content

[0004] This utility model aims to solve one of the technical problems existing in the prior art or related technologies.

[0005] Therefore, the technical solution adopted by this utility model is as follows:

[0006] A strain-displacement monitoring device for a large-span prestressed fish-belly steel support includes a monitoring mechanism. The monitoring mechanism includes a steel shell, a sphere movably engaged inside the steel shell, a strut vertically penetrating the sphere, two contact plates movably connected to both ends of the strut, and displacement sensors installed inside the contact plates. The two contact plates are respectively attached to both ends of the steel shell.

[0007] By adopting the above technical solution, the device is pressed against the bottom of the fish belly steel. When the fish belly steel is displaced, the force generated by the displacement affects the movement of the support rod through the contact plate in contact with it. The support rod moves left or right, forward or backward under the support of the ball. Then, the two contact plates move simultaneously along the end face of the steel shell. During this period, two displacement sensors monitor the displacement to ensure the accuracy of the monitoring operation.

[0008] In a preferred embodiment, the present invention can be further configured such that: a limiting mechanism is provided inside the steel outer shell, the limiting mechanism including a plurality of T-shaped rods surrounding the outside of the support rod, and a pressing member attached to the outside of the T-shaped rods, the pressing member being fixedly connected to the inner wall of the steel outer shell.

[0009] In a preferred embodiment, the present invention can be further configured as follows: multiple T-shaped bars are arranged in groups of four, forming two groups, with the two groups of T-shaped bars located at the top and bottom of the sphere respectively, and the four T-shaped bars in each group are evenly spaced and arranged in a ring.

[0010] In a preferred embodiment, the present invention can be further configured such that the T-shaped rod and the pressing component are both made of metal material, and the inner side of the pressing component is polished.

[0011] In a preferred embodiment, the present invention can be further configured such that the length of the support rod is less than the height of the steel outer shell, and both ends of the support rod are machined into spherical shapes.

[0012] In a preferred embodiment, the present invention can be further configured such that both ends of the steel outer shell are funnel-shaped, and the diameter of the outer end of the steel outer shell is smaller than the diameter of the contact plate.

[0013] By adopting the above technical solution, the beneficial effects achieved by this utility model are as follows:

[0014] 1. In this utility model, the device is pressed against the bottom of the fish belly steel. When the fish belly steel is displaced, the force generated by the displacement affects the movement of the support rod through the contact plate in contact with it. The support rod moves left or right, forward or backward under the support of the ball. Then, the two contact plates move simultaneously along the end face of the steel shell. During this period, the two displacement sensors monitor the displacement to ensure the accuracy of the monitoring operation.

[0015] 2. In the initial state of this utility model, the strut can be stably placed vertically under the compression of multiple T-shaped rods and pressing parts, ensuring that the strut and the contact plate can stably support the fish belly steel and improve the support stability. Attached Figure Description

[0016] Figure 1 This is a perspective view of the overall structure of this utility model;

[0017] Figure 2 This is a schematic diagram of the internal structure of the steel outer shell of this utility model;

[0018] Figure 3 This is a schematic diagram of the monitoring mechanism of this utility model;

[0019] Figure 4 This is a schematic diagram of the limiting mechanism of this utility model.

[0020] Figure label:

[0021] 100. Monitoring mechanism; 110. Steel casing; 120. Sphere; 130. Support rod; 140. Contact plate; 150. Displacement sensor;

[0022] 200. Limiting mechanism; 210. T-shaped rod; 220. Pressed part. Detailed Implementation

[0023] To make the objectives, technical solutions, and advantages of this utility model clearer, the present utility model will be further described in detail below with reference to specific embodiments and accompanying drawings. It should be noted that, unless otherwise specified, the embodiments and features of the present utility model can be combined with each other.

[0024] It should be understood that these descriptions are merely exemplary and not intended to limit the scope of this invention.

[0025] The following describes, with reference to the accompanying drawings, some embodiments of the present invention, providing a strain-displacement monitoring device for a large-span prestressed fish-belly steel support.

[0026] Example 1:

[0027] Combination Figure 1-4 As shown, the present invention provides a strain displacement monitoring device for a large-span prestressed fish-belly steel support, comprising a monitoring mechanism 100. The monitoring mechanism 100 includes a steel outer shell 110, a sphere 120 movably engaged inside the steel outer shell 110, a support rod 130 vertically penetrating the sphere 120, two contact plates 140 movably connected to both ends of the support rod 130, and a displacement sensor 150 installed inside the contact plates 140. The two contact plates 140 are respectively attached to both ends of the steel outer shell 110.

[0028] Furthermore, the length of the support rod 130 is less than the height of the steel outer shell 110, and both ends of the support rod 130 are machined into spherical shapes. The structural design of the support rod 130 can ensure that the support rod 130 supports the contact plate 140 without damage.

[0029] Example 2:

[0030] Combination Figure 2 and Figure 4 As shown, based on Embodiment 1, the steel outer shell 110 is provided with a limiting mechanism 200 inside. The limiting mechanism 200 includes multiple T-shaped rods 210 surrounding the outside of the support rod 130 and a pressing member 220 attached to the outside of the T-shaped rods 210. The pressing member 220 is fixed to the inner wall of the steel outer shell 110. Under the compression of the multiple T-shaped rods 210 and the pressing member 220, the support rod 130 can be stably placed vertically, ensuring that the support rod 130 and the contact plate 140 can stably support the fish belly steel.

[0031] Furthermore, the multiple T-shaped rods 210 are arranged in two groups of four, with the two groups of T-shaped rods 210 located at the top and bottom of the sphere 120 respectively. The four T-shaped rods 210 in each group are evenly spaced and arranged in a ring. The layout design of the T-shaped rods 210 can limit the support rods 130 in all directions, thereby improving the stability of the device structure.

[0032] Furthermore, the T-shaped rod 210 and the pressing member 220 are both made of metal materials. The inner side of the pressing member 220 is polished. The T-shaped rod 210 and the pressing member 220 cooperate to firmly limit the support rod 130.

[0033] Example 3:

[0034] Combination Figure 1-3 As shown, in the above embodiment, both ends of the steel outer shell 110 are configured as funnel shapes, and the outer diameter of the steel outer shell 110 is smaller than the diameter of the contact plate 140. The shape design of the steel outer shell 110 can stably support the contact plate 140.

[0035] The working principle and usage process of this utility model are as follows: The device is pressed against the bottom of the fish belly steel. When the fish belly steel is displaced, the force generated by the displacement affects the movement of the support rod 130 through the contact plate 140. The support rod 130 moves left or right, forward or backward under the support of the ball 120. Then, the two contact plates 140 move simultaneously along the end face of the steel shell 110. During this period, the two displacement sensors 150 monitor the displacement to ensure the accuracy of the monitoring operation.

[0036] Although embodiments of the present invention have been shown and described, those skilled in the art will understand that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the claims and their equivalents.

Claims

1. A strain-displacement monitoring device for a large-span prestressed fish-belly steel support, characterized in that, include: The monitoring mechanism (100) includes a steel shell (110), a sphere (120) movably snapped into the inside of the steel shell (110), a support rod (130) vertically penetrating the sphere (120), two contact plates (140) movably connected to both ends of the support rod (130), and a displacement sensor (150) installed inside the contact plates (140). The two contact plates (140) are respectively attached to both ends of the steel shell (110).

2. The strain-displacement monitoring device for a large-span prestressed fish-belly steel support according to claim 1, characterized in that, The steel outer shell (110) is provided with a limiting mechanism (200), which includes a plurality of T-shaped rods (210) surrounding the outside of the support rod (130) and a pressing member (220) attached to the outside of the T-shaped rods (210). The pressing member (220) is fixedly connected to the inner wall of the steel outer shell (110).

3. The strain-displacement monitoring device for a large-span prestressed fish-belly steel support according to claim 2, characterized in that, Multiple T-shaped bars (210) are arranged in groups of four, forming two groups. The two groups of T-shaped bars (210) are located at the top and bottom of the sphere (120) respectively. The four T-shaped bars (210) in each group are evenly spaced and arranged in a ring.

4. The strain-displacement monitoring device for a large-span prestressed fish-belly steel support according to claim 2, characterized in that, The T-shaped rod (210) and the pressing component (220) are both made of metal material, and the inner side of the pressing component (220) is polished.

5. The strain-displacement monitoring device for a large-span prestressed fish-belly steel support according to claim 1, characterized in that, The length of the support rod (130) is less than the height of the steel outer shell (110), and both ends of the support rod (130) are machined into spherical shapes.

6. The strain-displacement monitoring device for a large-span prestressed fish-belly steel support according to claim 1, characterized in that, Both ends of the steel outer shell (110) are configured as funnels, and the outer diameter of the steel outer shell (110) is smaller than the diameter of the contact plate (140).

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