Support platform for measuring vibration of stay cable by using digital single lens reflex

Abstract

The utility model relates to the technical field of stay cable vibration measurement, in particular to a support platform for measuring vibration of a stay cable by using a digital single lens reflex, which comprises an assembly platform, a lateral assembly seat protruding outwards is arranged on the side wall of the assembly platform, and a lateral assembly support is movably assembled on the lateral assembly seat. According to the support platform for measuring vibration of the stay cable through the single lens reflex, the lateral assembly supports are arranged on the two sides of the lateral assembly base on the side wall of the assembly platform, and the lateral assembly guide rails used for being connected with the stay cable are fixed to the outer side ends of the lateral assembly supports through bolts, so that the support platform can be installed on the adjacent stay cable; through the adjustment of the lateral assembly bracket, the device can be adapted to stay cables with different intervals, so that the application range is wider; the side assembly guide rail can be driven and adjusted along the stay cable, so that the position of the side assembly guide rail can be adjusted along the stay cable according to needs, the measurement range is wider, and measured values are more comprehensive.

Description

Technical Field

[0001] The utility model relates to the technical field of vibration measurement of inclined cables, in particular to a support platform for measuring vibration of inclined cables by utilizing a single-lens reflex camera. Background Art

[0002] The cable-stayed cable is the main load-bearing component that directly transfers the weight of the main beam and bridge deck of the cable-stayed bridge to the tower. The cable material of the cable-stayed bridge is usually steel cable, and its form varies according to its composition method. It can be composed of parallel steel wires, parallel steel cables, single steel cables, wire ropes, closed steel cables or solid steel bars. Since the cable is placed at an angle, it is called a cable-stayed cable. The stability of the cable-stayed cable is directly related to the structural stability and safety of the bridge.

[0003] A very important part of the stability test of the cable-stayed bridge is vibration measurement. There are many ways to measure the vibration of the cable-stayed bridge. Digital photogrammetry using a SLR camera is one of them. However, the camera can only be assembled through a special mounting bracket. In the wind tunnel test of the full-bridge aeroelastic model of the cable-stayed bridge, the dynamic measurement of the vibration displacement of the cable structure is realized, thereby obtaining the vibration form of the cable when the bridge is in aerodynamic instability. However, it cannot cope with the measurement operation of the cable-stayed bridge in different scene environments. The test environment is relatively limited and the test requirements are relatively high. Utility Model Content

[0004] The technical problem to be solved by the utility model is that the current device for measuring the vibration of the inclined cable by digital photography cannot cope with the measurement operation of the inclined cable in different scene environments, the test environment is relatively limited, and the test requirements are relatively high.

[0005] The technical solution adopted by the utility model to solve its technical problems is: a bracket platform for measuring the vibration of an inclined cable using a single-lens reflex camera, comprising an assembly platform, a side assembly seat protruding outward is provided on the side wall of the assembly platform, the side assembly seat is movably equipped with a lateral assembly bracket, the outer end of the lateral assembly bracket is bolted with a lateral assembly guide rail for connecting the inclined cable, an embedded electric control adjustment disk is installed on the side wall of the assembly platform away from the side assembly seat, and a lateral fixing frame for fixing the single-lens reflex camera is bolted on the outer surface of the embedded electric control adjustment disk.

[0006] The lateral assembly bracket includes an external flip arm movably mounted on the outer assembly frame of the side assembly seat through a connecting shaft and a flip limit arm mounted on the side wall of the external flip arm. The flip limit arm is inserted into the interior of the limit bracket on the outer surface of the side assembly seat and the side assembly guide rail through an outer locking bolt and is fixedly assembled with the side assembly seat and the side assembly guide rail.

[0007] A circular assembly groove matched with the embedded electric control adjustment disk is provided on the side wall of the assembly platform.

[0008] The embedded electric control adjustment disk comprises an adjustment disk body installed in a circular assembly groove and an internal adjustment motor fixed in a side assembly seat. The internal adjustment motor is meshed with a built-in rotating gear on the inner side of the adjustment disk body through an adjustment gear on an adjustment shaft.

[0009] The side wall of the side assembly guide rail is provided with a side assembly shell protruding outward, and an electrically controlled side drive wheel and a magnetically controlled locking frame installed at the opening position of the side assembly shell are installed inside the side assembly shell.

[0010] An embedded internal threaded pipe is installed at the middle position of the outer side surface of the adjusting disc body, and the lateral fixing frame is screwed into the embedded internal threaded pipe and fixedly assembled with the adjusting disc body through the locking bolts on the assembly surface.

[0011] The beneficial effects of the utility model are:

[0012] (1) The utility model provides a support platform for measuring the vibration of a cable using a single-lens reflex camera by arranging lateral assembly supports on both sides of a lateral assembly seat on the side wall of the assembly platform, and bolting a lateral assembly guide rail for connecting the cable to the lateral assembly support on the outer end of the lateral assembly support, so that the lateral assembly support can be installed on adjacent cables. The lateral assembly support can be adjusted to adapt to cables with different spacings, and has a wider range of applications.

[0013] (2) The side assembly guide rail can be driven and adjusted along the inclined cable, so that its position can be adjusted along the inclined cable as needed, making its measurement range wider and the measurement values ​​more comprehensive;

[0014] (3) An embedded electric control adjustment disk is installed on the side wall of the assembly platform away from the side assembly seat. A lateral fixing frame for fixing the SLR camera is bolted to the outer surface of the embedded electric control adjustment disk, which can adjust the shooting angle of the SLR camera in real time, making it more convenient to operate. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] The utility model is further described below in conjunction with the accompanying drawings and embodiments.

[0016] Figure 1 It is a structural schematic diagram of the utility model.

[0017] Figure 2 It is a side schematic diagram of the utility model.

[0018] Figure 3 It is a partial schematic diagram of the sideways assembly position of the housing in the utility model. DETAILED DESCRIPTION

[0019] Now the utility model is further described in detail with reference to the accompanying drawings. These drawings are simplified schematic diagrams, which only illustrate the basic structure of the utility model in a schematic manner, and therefore only show the components related to the utility model.

[0020] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "connected" and "connection" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0021] Figure 1 , Figure 2 and Figure 3 A support platform for measuring the vibration of an inclined cable using a single-lens reflex camera is shown, comprising an assembly platform 1, a side assembly seat 2 protruding outward is provided on the side wall of the assembly platform 1, a side assembly bracket 3 is movably mounted on the side assembly seat 2, a side assembly guide rail 4 for connecting the inclined cable is bolted to the outer end of the side assembly bracket 3, an embedded electric control adjustment disk 5 is installed on the side wall of the assembly platform 1 away from the side assembly seat 2, and a lateral fixing frame 6 for fixing the single-lens reflex camera is bolted to the outer surface of the embedded electric control adjustment disk 5.

[0022] In order to cooperate with lateral assembly and limit the angle, the lateral assembly bracket 3 includes an external flip arm 31 movably installed with the outer assembly frame of the side assembly seat 2 through a connecting shaft and a flip limit arm 32 installed on the side wall of the external flip arm 31. The flip limit arm 32 is inserted into the interior of the limit bracket 7 on the outer surface of the side assembly seat 2 and the side assembly guide rail 4 through the outer locking bolt and fixedly assembled with the side assembly seat 2 and the side assembly guide rail 4.

[0023] In order to facilitate lateral assembly, a circular assembly groove matching with the embedded electric control adjustment disk 5 is opened on the side wall of the assembly platform 1 .

[0024] In order to cooperate with angle adjustment, the embedded electric control adjustment disk 5 includes an adjustment disk body 51 installed inside the circular assembly groove and an internal adjustment motor 52 fixed inside the side assembly seat 2. The internal adjustment motor 52 is meshed with the built-in rotating gear 54 on the inner side of the adjustment disk body 51 through the adjustment gear 53 on the adjustment shaft.

[0025] The internal adjustment motor 52 is a prior art, which drives the internal rotating gear 54 by driving the adjustment gear 53 to rotate, thereby driving the adjustment disc ladder 51 to rotate inside the circular assembly groove.

[0026] In order to coordinate driving and locking, facilitate driving and improve assembly stability, a lateral assembly shell 41 protruding outward is provided on the side wall of the lateral assembly guide rail 4, and an electrically controlled lateral drive wheel 42 and a magnetically controlled locking frame 43 installed at the opening position of the lateral assembly shell 41 are installed inside the lateral assembly shell 41.

[0027] The side assembly rail 4 adopts a split structural design, including a functional cover 44 connected to the side assembly bracket 3 on the outside and an assembly cover 45 bolted to the open end of the functional cover 44. The assembly cover 45 can be replaced and adapted according to the size of the inclined cable.

[0028] The electrically controlled lateral drive wheel 42 is composed of a drive motor and a drive wheel fixed on the outside of the drive motor. The mounting shafts on both sides of the drive motor are fixed to the inner wall of the lateral assembly housing 41, and the external drive wheel is driven to rotate by powering on. The magnetically controlled locking frame 43 is also a prior art, which is composed of an electromagnet installed on the inner wall of the lateral assembly housing 41 and a limit frame installed on one side of the electromagnet through an iron spring. When the electromagnet is started, the iron spring will be driven to contract, thereby driving the limit frame to squeeze against the surface of the inclined cable, thereby fixing and locking the lateral assembly guide rail 4 and the inclined cable, improving the stability during measurement; when the electromagnet is turned off, the iron spring controls the limit frame to separate from the inclined cable, thereby facilitating the driving of the electrically controlled lateral drive wheel 42.

[0029] In order to facilitate fixed assembly, an embedded internal threaded tube is installed in the middle of the outer side of the adjusting disc body 51 , and the lateral fixing frame 6 is screwed into the embedded internal threaded tube and fixedly assembled with the adjusting disc body 51 through the locking bolts on the assembly surface.

[0030] The threaded rod section of the locking bolt passes through the lateral fixing frame 6 and is screwed into the embedded internal threaded tube to be fixedly assembled with the outer side surface of the adjusting disc body 51 .

[0031] Based on the above ideal embodiments of the utility model, the relevant staff can make various changes and modifications without deviating from the technical concept of the utility model through the above description. The technical scope of the utility model is not limited to the content of the specification, and its technical scope must be determined according to the scope of the claims.

Claims

1. A support platform for measuring the vibration of a stay cable using a single-lens reflex camera, comprising an assembly platform (1), characterized in that: The side wall of the assembly platform (1) is provided with a side assembly seat (2) protruding outward, the side assembly seat (2) is movably provided with a side assembly bracket (3), the outer end of the side assembly bracket (3) is bolted with a side assembly guide rail (4) for connecting the inclined cable, and the side wall of the assembly platform (1) facing away from the side assembly seat (2) is provided with an embedded electric control adjustment disk (5), and the outer surface of the embedded electric control adjustment disk (5) is bolted with a lateral fixing frame (6) for fixing a single-lens reflex camera.

2. The support platform for measuring the vibration of a stay cable using a single-lens reflex camera according to claim 1, characterized in that: The lateral assembly bracket (3) comprises an external flip arm (31) movably mounted on an outer assembly frame of the lateral assembly seat (2) via a connecting shaft, and a flip limit arm (32) mounted on a side wall of the external flip arm (31); the flip limit arm (32) is inserted into the interior of a limit bracket (7) on the outer side surface of the lateral assembly seat (2) and the lateral assembly guide rail (4) and fixedly assembled with the lateral assembly seat (2) and the lateral assembly guide rail (4) via an outer locking bolt.

3. The support platform for measuring the vibration of a stay cable using a single-lens reflex camera according to claim 1, characterized in that: A circular assembly groove matching the built-in electric control adjustment disk (5) is provided on the side wall of the assembly platform (1).

4. The support platform for measuring the vibration of a stay cable using a single-lens reflex camera according to claim 1, characterized in that: The embedded electric control adjustment disk (5) comprises an adjustment disk body (51) mounted inside a circular assembly groove and an internal adjustment motor (52) fixed inside a side assembly seat (2); the internal adjustment motor (52) meshes with a built-in rotating gear (54) on the inner side surface of the adjustment disk body (51) via an adjustment gear (53) on an adjustment shaft.

5. The support platform for measuring the vibration of a stay cable using a single-lens reflex camera according to claim 1, characterized in that: The side wall of the side assembly guide rail (4) is provided with a side assembly shell (41) protruding outwards, and an electrically controlled side drive wheel (42) and a magnetically controlled locking frame (43) installed at an opening position of the side assembly shell (41) are installed inside the side assembly shell (41).

6. The support platform for measuring the vibration of a stay cable using a single-lens reflex camera according to claim 4, characterized in that: An embedded internally threaded tube is installed at the middle position of the outer side surface of the adjusting disc body (51), and the lateral fixing frame (6) is screwed into the embedded internally threaded tube and fixedly assembled with the adjusting disc body (51) via locking bolts on the assembly surface.

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