Bridge navigation hole clearance height measuring instrument

Abstract

The utility model belongs to the technical field of bridge navigation measurement, and provides a bridge navigation hole clearance height measuring instrument, which comprises a height measuring unit mounting plate and a measuring floating plate, the height measuring unit mounting plates are mounted and distributed along the track of the inner side wall of a bridge navigation hole, a horizontal measuring floating plate is arranged on the water surface corresponding to the inner side of the bridge navigation hole, and sliding blocks are arranged at the two ends of the measuring floating plate in an elastic telescopic mode. The height measuring unit mounting plate corresponding to the sliding block is provided with a measuring floating plate moving track distributed along the track of the height measuring unit mounting plate, the sliding block is slidably connected in the measuring floating plate moving track in a limiting mode, and a laser receiver box is installed in the middle of the top of the measuring floating plate. A plurality of laser receiving ends are uniformly and transversely arranged in the laser receiver box, a laser emitter is installed on the height measurement unit installation plate corresponding to each laser receiving end, the device can automatically and accurately measure the net height of the bridge navigation hole of an arc-shaped structure, and the speed and the efficiency are high.

Description

Technical Field

[0001] The utility model belongs to the technical field of bridge navigation measurement, in particular to a bridge navigation hole clearance height measuring instrument. Background Art

[0002] The height of the navigation hole of an offshore bridge may change due to factors such as weather, tides or flood season. The height of the navigation hole is crucial to the safety of passing ships and bridges, so the height of the navigation hole of the bridge needs to be tested.

[0003] The existing patent authorization number is: CN213985007U, which discloses a clear height measurement device for the navigation hole of a cross-sea bridge, including a main body, a water level monitoring rod is arranged inside the main body, a power generation device and a control cabinet are arranged on the outer surface of one side of the main body, and the control cabinet is located above the power generation device. The device measures the navigation hole diameter of the bridge through the water level detection rod, and has the function of simple structure and convenient operation. However, after analyzing the device, it is found that the device is only applicable to some bridge navigation holes with rectangular structures. For most bridge navigation holes with arch structures, due to the different heights at the arc, it is impossible to install densely distributed measuring rods at the arc, so that the device cannot accurately measure the water level height at the arc end during measurement;

[0004] Therefore, in view of the above-mentioned problems, this technical solution designs a bridge navigation hole clearance height measuring instrument. Utility Model Content

[0005] The purpose of the embodiment of the utility model is to provide a bridge navigation hole clearance height measuring instrument, aiming to solve the above-mentioned problem.

[0006] The utility model is implemented as follows: a bridge navigation hole clearance height measuring instrument comprises: a bridge navigation hole, a height measuring unit mounting plate, and a measuring float; the height measuring unit mounting plate is installed and distributed along the inner side wall track of the bridge navigation hole, and a horizontal measuring float is arranged on the water surface corresponding to the inner side of the bridge navigation hole, and sliders are elastically and telescopically arranged at both ends of the measuring float, and a measuring float moving track distributed along the height measuring unit mounting plate track is provided on the height measuring unit mounting plate corresponding to the slider, and the slider is slidingly connected to the inside of the measuring float moving track in a limited manner, and the measuring float rises and falls synchronously with the change of water level, and the slider moves along the inside of the measuring float moving track, and when it moves to the arc section inside the bridge navigation hole, the lateral distance is reduced, and at this time, the sliders at both ends also shrink synchronously, and the measuring float moves to the inner side of the bridge navigation hole. A laser receiver box is installed in the middle of the top of the measuring float, and multiple laser receiving ends are evenly and horizontally arranged inside the laser receiver box. A laser transmitter is installed on the height measuring unit mounting plate corresponding to each laser receiving end. The distance between the laser transmitter and the laser receiving end is accurately measured by sending and receiving light between each group of laser transmitters and the laser receiving end. At the same time, at the beginning of installation, the lateral distance between the laser transmitter and the laser receiving end is known and remains unchanged. After calculating the straight line distance between the laser transmitter and the laser receiving end, the vertical height of the measuring float corresponding to the inner wall of the bridge navigation hole at the position of the laser transmitter can be accurately calculated through the formula. Therefore, the water level heights at various positions of the lateral side wall, curved side wall and vertical side wall at the inner wall of the bridge navigation hole can be accurately measured.

[0007] The bridge navigation hole clearance height measuring instrument provided by the utility model is achieved by evenly arranging multiple groups of laser transmitters inside the bridge navigation hole, then arranging measuring floats according to water level changes on the lower water surface corresponding to the bridge navigation hole, arranging multiple groups of laser receiving ends corresponding to the laser transmitters for linear distance measurement on the measuring floats, and then according to the formula and the known lateral distance between the laser receiving ends and the inner wall of the bridge navigation hole, the water level height corresponding to each location on the inner wall of the bridge navigation hole, including the arc segment inside the bridge navigation hole, can be accurately calculated, thereby realizing accurate and automated measurement of the clearance height of the navigation holes for most arched bridge navigation holes. BRIEF DESCRIPTION OF THE DRAWINGS

[0008] Figure 1 This is a structural schematic diagram of the bridge navigation hole clearance height measuring instrument distributed in the bridge navigation hole.

[0009] Figure 2 This is a schematic diagram of the three-dimensional structure of the measuring float in the bridge navigation opening clearance height measuring instrument.

[0010] Figure 3 This is a schematic diagram of the main structure of the measuring float in the bridge navigation hole clearance height measuring instrument.

[0011] Figure 4 This is a schematic diagram of the partial structure of the height measurement unit mounting plate in the bridge navigation channel clearance height measuring instrument.

[0012] In the attached drawings: bridge navigation hole 10, height measuring unit mounting plate 11, laser transmitter mounting belt 12, measuring float moving track 13, laser transmitter 14, laser receiver box 15, laser receiving end 16, float 17, slider 18, telescopic rod 19, telescopic hole 20, spring 21, limit block 22, measuring float 23. DETAILED DESCRIPTION

[0013] In order to make the purpose, technical solution and advantages of the utility model more clear, the utility model is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described here are only used to explain the utility model and are not used to limit the utility model.

[0014] The specific implementation of the present utility model is described in detail below in conjunction with specific embodiments.

[0015] like Figure 1-4As shown, it is a structural diagram of the bridge navigation hole clearance height measuring instrument provided by an embodiment of the utility model, comprising: a bridge navigation hole 10, a height measuring unit mounting plate 11, and a measuring float 23; the height measuring unit mounting plate 11 is installed and distributed along the inner side wall track of the bridge navigation hole 10, and at the same time, a horizontal measuring float 23 is arranged on the water surface corresponding to the inner side of the bridge navigation hole 10, and sliders 18 are elastically and telescopically arranged at both ends of the measuring float 23, and a measuring float moving track 13 distributed along the track of the height measuring unit mounting plate 11 is opened on the height measuring unit mounting plate 11 corresponding to the slider 18, and the slider 18 is limitedly slidably connected inside the measuring float moving track 13, and the measuring float 23 rises and falls synchronously with the change of water level, and the slider 18 moves inside the measuring float moving track 13, and when it moves to the arc section inside the bridge navigation hole 10, there is a decrease in the lateral distance, and at this time, the sliders 18 at both ends are also synchronously Contraction, a laser receiver box 15 is installed in the middle of the top of the measuring float 23, and a plurality of laser receiving ends 16 are evenly and laterally arranged inside the laser receiver box 15. A laser transmitter 14 is installed on the height measuring unit mounting plate 11 corresponding to each laser receiving end 16. Through the transmission and reception of light between each group of laser transmitters 14 and the laser receiving end 16, the distance between the laser transmitter 14 and the laser receiving end 16 is accurately measured. At the same time, at the beginning of installation, the lateral distance between the laser transmitter 14 and the laser receiving end 16 is known and remains unchanged. After calculating the straight line distance between the laser transmitter 14 and the laser receiving end 16, the vertical height of the measuring float 23 corresponding to the inner wall of the bridge navigation hole 10 at the position of the laser transmitter 14 can be accurately calculated through the formula, thereby the water level heights at various positions of the lateral side wall, the curved side wall and the vertical side wall at the inner wall of the bridge navigation hole 10 can be accurately measured.

[0016] In the embodiment of the utility model, the height measuring unit mounting plate 11 is fixedly mounted on the inner wall of the bridge navigation hole 10 by a plurality of expansion bolts, and a laser transmitter mounting belt 12 is arranged on the outer wall of the height measuring unit mounting plate 11 between the moving tracks 13 of the measuring floats on both sides, and the laser transmitter 14 is installed at the corresponding position according to the requirements of the measuring position of the inner wall of the bridge navigation hole 10, and the number of the laser transmitters 14 is also determined according to the specific measuring position;

[0017] The laser receiving end 16 is connected to the inner side thereof with a clock oscillator and a distance counter. The laser transmitter 14 transmits light, and the laser receiving end 16 receives the light. Then, the received signal is analyzed and processed by the clock oscillator and the distance counter to quickly calculate the distance between the laser transmitter 14 and the laser receiving end 16. The working principle here belongs to the prior art and will not be described in detail.

[0018] The laser transmitter 14 and the laser receiving end 16 are both provided with waterproof functions. The laser receiving end 16 is both provided inside the laser receiver box 15 installed on the top of the measuring float 23. The output end of the laser receiving end 16 is consistent with the top wall of the laser receiver box 15. A floating plate 17 is installed at the bottom of the measuring float 23. The buoyancy of the floating plate 17 is used to keep the laser receiver box 15 and the laser receiving end 16 above the water surface. After the laser receiving end 16 and the laser transmitter 14 cooperate to measure and calculate the height of each part of the inner wall of the bridge navigation hole 10 through the formula, it is necessary to consider the thickness of the measuring float 23, and add the corresponding value to obtain the specific water level height of the inner wall of the bridge navigation hole 10.

[0019] Specifically, the laser transmitter 14 is arranged on the laser transmitter mounting belt 12, and there is a certain distance between its end and the inner side of the bridge navigation hole 10. Therefore, after calculating the distance between the laser transmitter 14 and the laser receiving end 16, the known distance between the output end of the laser transmitter 14 and the inner wall of the bridge navigation hole 10 is added, and the distance between the inner wall of the bridge navigation hole 10 and the laser receiving end 16 is obtained. The specific calculation formula and some required data can be measured in advance, which are all prior art or common sense.

[0020] Specifically, since the measuring floating plate 23 is placed on the water surface below the bridge navigation hole 10, it is often contacted and collided by navigable ships.

[0021] In one example of the present invention, by setting the edges and corners of the measuring float 23 and the laser receiver box 15 to arc structures and providing a buffer and anti-collision layer on the outer surfaces of the measuring float 23 and the laser receiver box 15, the collision damage can be substantially reduced.

[0022] As a preferred embodiment of the utility model, a section of the measuring float 23 near the slider 18 is provided with an elastic buffer, which is used to automatically adjust the lateral length of the measuring float 23 according to the lateral width change of the inner side of the bridge navigation hole 10. The elastic buffer includes a group of telescopic rods 19, one end of the telescopic rod 19 is installed on the measuring float 23 near the slider 18, and the other end of the telescopic rod 19 is installed with a limit block 22. The limit block 22 is movably arranged in a telescopic hole 20 opened in the inner wall of the measuring float 23. The inner side of the limit block 22 is elastically connected with a spring 21, that is, the elastic effect of the spring 21 is utilized to provide a certain distance of buffering capacity for the telescopic rod 19 and the slider 18 at the end of the telescopic rod 19.

[0023] Since the measuring float 23 is placed inside the bridge navigation hole 10 and changes with the water level, when a large ship passes through the inside of the bridge navigation hole 10, excessive pressure will be applied to the measuring float 23, which may easily cause damage to it. In addition, the structure at the bottom of some large ships cannot hold the measuring float 23 to pass through. Therefore, this device is only suitable for use in some bridge navigation holes where non-large ships pass. At the same time, since the length of the measuring float 23 is not easy to be too long during use, this device is not suitable for use in occasions where the bridge navigation hole is too wide.

[0024] The above embodiment of the utility model provides a bridge navigation hole clearance height measuring instrument, which is applied to the construction of offshore bridges. According to the width of the bridge navigation hole 10, the height measurement unit mounting plate 11 is pre-installed along the inner track of the bridge navigation hole 10, and then according to the measurement requirements of the arc segment and the horizontal and vertical straight line segment inside the bridge navigation hole 10, a corresponding appropriate number and interval of laser transmitters 14 are installed, and then a laser receiving end 16 corresponding to the laser transmitter 14 is set in the laser receiver box 15 to receive the signal. Each group of laser transmitters is used to measure the height of the bridge navigation hole 10. 14 cooperates with the laser receiving end 16 to accurately measure the straight-line distance between the two, and then calculates the height from the inner side of the bridge navigation hole 10 to the measuring float 23 corresponding to each group of laser transmitters 14 according to the formula, and then calculates the final water level height at each position inside the bridge navigation hole 10 according to the thickness of the measuring float 23. When the ship passes through the inner side of the bridge navigation hole 10, downward pressure is applied to the measuring float 23. At this time, the sliders 18 on both sides of the measuring float 23 slide down along the measuring float moving track 13 into the water without affecting the normal passage of the ship.

[0025] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. The bridge navigation hole clearance height measuring instrument is characterized by: The bridge navigation hole clearance height measuring instrument includes: a bridge navigation hole, a height measuring unit mounting plate, and a measuring float; the height measuring unit mounting plate is installed and distributed along the inner wall track of the bridge navigation hole, a horizontal measuring float is arranged on the water surface corresponding to the inner side of the bridge navigation hole, sliders are elastically and telescopically arranged at both ends of the measuring float, a measuring float moving track distributed along the height measuring unit mounting plate track is opened on the height measuring unit mounting plate corresponding to the slider, the slider is limitedly slidably connected inside the measuring float moving track, a laser receiver box is installed in the middle of the top of the measuring float, a plurality of laser receiving ends are evenly and laterally arranged inside the laser receiver box, and a laser transmitter is installed on the height measuring unit mounting plate corresponding to each laser receiving end.

2. The bridge navigation hole clearance height measuring instrument according to claim 1 is characterized in that: The height measuring unit mounting plate is fixedly mounted on the inner wall of the bridge navigation hole by a plurality of expansion bolts, and a laser transmitter mounting belt is arranged on the outer side wall of the height measuring unit mounting plate between the moving tracks of the measuring floats on both sides.

3. The bridge navigation hole clearance height measuring instrument according to claim 2 is characterized in that: The laser transmitter and the laser receiving end are both provided with waterproof function. The laser receiving end is arranged inside the laser receiver box installed on the top of the measuring floating plate. The output end of the laser receiving end is consistent with the top wall of the laser receiver box. A floating plate is installed at the bottom of the measuring floating plate.

4. The bridge navigation hole clearance height measuring instrument according to claim 3 is characterized in that: The edges and corners of the measuring floating plate and the laser receiver box are both arranged as arc structures, and a buffer and anti-collision layer is arranged on the outer surfaces of the measuring floating plate and the laser receiver box.

5. The bridge navigation hole clearance height measuring instrument according to claim 4 is characterized in that: A section of the measuring floating plate close to one side of the slider is provided with an elastic buffer, which includes a group of telescopic rods, one end of the telescopic rod is installed on the measuring floating plate close to one side of the slider, and the other end of the telescopic rod is installed with a limit block, which is movably arranged in a telescopic hole opened in the inner wall of the measuring floating plate, and a spring is elastically connected to the inner side of the limit block.

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