Bridge dynamic deflection monitoring device

Abstract

The utility model discloses a bridge dynamic deflection monitoring device. The device comprises a tripod; the mounting plate is fixedly connected to the top of the tripod; the inner sliding frame is arranged on the upper portion of the mounting plate, the adjusting rod is arranged on the upper portion of the mounting plate, the fixing seat is arranged on the top of the mounting plate, a supporting seat is arranged on the top of the fixing seat, and a limiting seat is fixedly connected to the inner side of the supporting seat. When an inner sliding frame moves downwards to be adjusted, all adjusting rods at the top are driven to move downwards, the adjusting rods drive pressing plates to move downwards and press all limiting pressing grooves in the top of a base, the base is pressed and fixed on the inner sides of the limiting grooves, and the total station is rapidly fixed at the installation position above a tripod; by arranging the worm, the worm gear and the adjusting lead screws, the worm drives the meshed worm gear to rotate when rotating, the worm drives the adjusting lead screws on the inner side to rotate when rotating, and the height positions of the inner sliding frames on the outer sides of the adjusting lead screws are adjusted.

Description

TECHNICAL FIELD

[0001] The utility model relates to monitoring device technical field, concretely is a bridge dynamic deflection monitoring device. BACKGROUND

[0002] Bridge dynamic deflection is vertical instantaneous displacement (namely bridge elastic deformation in vertical direction) that bridge structure produces under dynamic load, its numerical value changes with time real -time, is the key index that reflects bridge dynamic performance and structure healthy state, in bridge dynamic deflection monitoring, total station becomes the core tool of deformation monitoring under the cross -river cross -sea large -span bridge, complex structure system and special working condition with high -precision three -dimensional measurement, dynamic response optimization and intelligent technology integration ability, through polar coordinate method or free station method, real -time obtains the spatial coordinates (X, Y, Z) of prism target (is installed on bridge deck or structure key point), calculates vertical displacement (Delta Z) that is dynamic deflection, cooperates dynamic scanning mode, can realize 5Hz~20Hz sampling frequency (according to instrument model, like leica TS60 reaches 1000 points / second maximum), captures bridge vibration transient response, the existing total station mostly supports through tripod, but the existing total station tripod is difficult to assemble and fix total station, and the steps of fixing and disassembling and maintaining total station are more cumbersome. SUMMARY

[0003] The utility model discloses a bridge dynamic deflection monitoring device, to solve the problem that the existing total station tripod is difficult to assemble and fix total station in the background art, and the steps of fixing and disassembling and maintaining total station are more cumbersome.

[0004] To achieve the above object, the utility model provides the following technical scheme: a bridge dynamic deflection monitoring device, comprising:

[0005] Tripod;

[0006] Mounting plate, mounting plate fixedly connected at the top of tripod;

[0007] Fixed seat, fixed seat is installed at the top of mounting plate, the top of fixed seat is provided with support seat, the inner side of support seat is fixedly connected with limit seat;

[0008] Limiting table, limiting table is installed at the inner side of limit seat, the top of limiting table is provided with limiting slot;

[0009] Total station, total station is placed above limiting table, the bottom of total station is provided with base that cooperates with limiting slot;

[0010] Adjusting rod, adjusting rod is equidistantly slidably arranged in the interior of limit seat, the top end of adjusting rod is rotatably provided with pressing plate through damping pivot;

[0011] As a preferred scheme of the utility model: still include the inner slide frame, the inner slide frame is arranged in the inner side of support base slidingly, the bottom of adjusting rod is fixed with the inner slide frame, the inside of inner slide frame is connected with adjusting screw rod, adjusting screw rod is rotatably connected with support base, adjusting screw rod is rotatably connected with limit seat, adjusting screw rod is rotatably connected with fixed seat.

[0012] As a preferred scheme of the utility model: the outside of adjusting screw rod is fixed with worm gear, the inside of fixed seat is rotatably provided with worm, worm is meshed with worm gear.

[0013] As a preferred scheme of the utility model: the side of fixed seat is rotatably provided with rotating screw block, one end of worm is fixed with rotating screw block.

[0014] As a preferred scheme of the utility model: the inside of inner slide frame is equidistantly slidably provided with multiple limit rods, one end of limit rod is fixed with support base, the other end of limit rod is fixed with limit seat.

[0015] As a preferred scheme of the utility model: the top of base is equidistantly provided with multiple limit pressing grooves matched with pressing plate.

[0016] Compared with the prior art, the utility model has the advantages that: the inner slide frame, adjusting rod, pressing plate and limit pressing groove are set, realize that each adjusting rod on the top is moved down when the inner slide frame is moved down to adjust, the pressing plate is moved down by adjusting rod and presses each limit pressing groove on the top of base, the base is pressed and fixed in the limit groove, the installation position of total station above tripod is quickly fixed, the worm, worm gear and adjusting screw rod are set, realize that the meshed worm gear is rotated when the worm is rotated, the inner slide frame on the outside of adjusting screw rod is adjusted in height position when the worm gear is rotated. BRIEF DESCRIPTION OF DRAWINGS

[0017] Figure 1 It is whole structure schematic diagram of the utility model;

[0018] Figure 2 It is dismounting schematic diagram of the utility model;

[0019] Figure 3 It is limit seat, limit platform structure schematic diagram of the utility model;

[0020] Figure 4 It is fixed seat internal structure schematic diagram of the utility model;

[0021] Figure 5 It is worm gear, worm structure schematic diagram of the utility model;

[0022] Figure 6 It is the internal sliding frame structure schematic view of the utility model.

[0023] In the figure: 1, tripod; 2, support seat; 3, limit seat; 4, limit platform; 5, total station; 6, adjusting rod; 7, pressing plate; 8, internal sliding frame; 9, limit rod; 10, adjusting screw; 11, fixed seat; 12, worm wheel; 13, worm; 14, rotating knob; 15, base; 16, limit pressing groove; 17, limit groove; 18, mounting plate. DETAILED DESCRIPTION

[0024] The technical scheme in the embodiments of the utility model will be described clearly and completely below with reference to the drawings in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by those skilled in the art without creative labor fall within the scope of protection of the utility model.

[0025] Please refer to Figures 1 to 6 The utility model provides a kind of technical scheme: a bridge dynamic deflection monitoring device, comprising: tripod 1;Mounting plate 18 is fixedly connected at the top of tripod 1;Fixed seat 11 is installed at the top of mounting plate 18 by bolt, and the top of fixed seat 11 is fixedly connected with support seat 2, and the inner side of support seat 2 is fixedly connected with limit seat 3;Limit platform 4 is installed at the inner side of limit seat 3 by bolt, and the top of limit platform 4 is provided with limit groove 17;Total station 5 is placed above limit platform 4, and the bottom of total station 5 is provided with base 15 matched with limit groove 17;Adjusting rod 6 is equidistantly slidably arranged in the inside of limit seat 3, and the top end of adjusting rod 6 is rotatably provided with pressing plate 7 by damping pivot.

[0026] It should be noted that in the present embodiment, by rotating the pressing plate 7, the pressing plate 7 and the adjusting rod 6 are rotated through the damping shaft, which is a mechanical connecting component that provides controllable resistance when rotating through friction or damping material, and is composed of a shaft body, a damping element such as a friction plate, a silica gel pad, and a fixing component. By the contact friction between the damping element and the shaft, resistance is generated. The pressing plate 7 is rotated and adjusted, and the base 15 at the bottom of the total station 5 is limitedly installed in the limiting groove 17. After installation, the pressing plate 7 is reset and rotated, and the pressing plate 7 is located above the limiting pressing groove 16. The rotating knob 14 is manually rotated, and the rotating knob 14 drives the worm 13 to rotate when rotating. The worm 13 drives the meshed worm wheel 12 to rotate when rotating, and the worm wheel 12 drives the inside adjusting lead screw 10 to rotate when rotating. The adjusting lead screw 10 drives the outside inner sliding frame 8 to adjust the height position when rotating. The inner sliding frame 8 moves downward and drives the adjusting rod 6 and the pressing plate 7 to move downward. The limiting pressing groove 16 is pressed by the pressing plate 7, and the base 15 is tightly fixed in the limiting groove 17. At this time, the total station 5 can be installed and fixed above the tripod 1. The total station 5 observes the height difference between the observation station and the target point through the built-in program, loads the difference between the two height differences before and after, and obtains the deflection value of the target point. The prism is installed at the bridge measurement point. The spatial three-dimensional coordinates are calculated by using the electromagnetic wave distance measurement and angle measurement technology combined with the trigonometric function. The total station 5 can automatically switch the prism target and cyclically scan to obtain the coordinates of the measurement point at different times. The vertical coordinate change reflects the deflection time curve. The automatic target recognition function is provided, and the multi-point dynamic tracking measurement can be completed without human intervention. The data is transmitted to the monitoring center through wireless transmission for real-time analysis.

[0027] In one embodiment, as shown in Figures 4 to 6 The inner sliding frame 8 is slidably arranged on the inner side of the support seat 2. The bottom end of the adjusting rod 6 is fixedly connected with the inner sliding frame 8. The inner sliding frame 8 is threadedly connected with the adjusting lead screw 10. The adjusting lead screw 10 is rotatably connected with the support seat 2, the limiting seat 3, and the fixing seat 11.

[0028] It should be noted that in the present embodiment, the adjusting lead screw 10 drives the inner sliding frame 8 to slide and adjust in the support seat 2 when rotating. The inner sliding frame 8 drives the adjusting rod 6 and the pressing plate 7 to adjust the height position.

[0029] In one embodiment, as shown in Figures 4 to 6 The outer side of the adjusting lead screw 10 is fixedly connected with the worm wheel 12. The inner side of the fixing seat 11 is rotatably provided with the worm 13. The worm 13 is meshingly connected with the worm wheel 12.

[0030] It should be noted that in the present embodiment, the worm 13 drives the meshed worm wheel 12 to rotate when rotating. The worm wheel 12 drives the inside adjusting lead screw 10 to rotate and adjust when rotating.

[0031] In one embodiment, as shown in Figure 4 and Figure 5 The one side of the fixed seat 11 is rotationally provided with a rotating knob 14, and one end of the worm 13 is fixedly connected with the rotating knob 14.

[0032] It should be noted that, in this embodiment, the rotating knob 14 is used to adjust the rotation of the worm 13, and the worm 13 drives the meshing worm gear 12 to rotate and adjust.

[0033] In one embodiment, as shown in Figures 4 to 6 The inside of the inner sliding frame 8 is equidistantly provided with a plurality of limiting rods 9, one end of the limiting rod 9 is fixedly connected with the supporting seat 2, and the other end of the limiting rod 9 is fixedly connected with the limiting seat 3.

[0034] It should be noted that, in this embodiment, the inner sliding frame 8 slides on the inner side of the supporting seat 2, and each limiting rod 9 is used to guide the inner sliding frame 8, thereby improving the stability of the adjustment of the inner sliding frame 8.

[0035] In one embodiment, as shown in Figures 1 to 5 The top of the base 15 is equidistantly provided with a plurality of limiting pressure grooves 16 matched with the pressing plate 7.

[0036] It should be noted that, in this embodiment, the pressing plate 7 is limited and pressed against the base 15 through the limiting pressure grooves 16, and the base 15 is limited and fixed in the limiting groove 17.

[0037] In the description of the present application, it should be understood that the terms "coaxial", "bottom", "one end", "top", "middle", "the other end", "upper", "one side", "top", "inner", "front", "central", "both ends" and the like indicate the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the devices or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as a limitation of the present application.

[0038] In addition, the terms "first", "second", "third", "fourth" are only for descriptive purposes, and cannot be understood as indicating or implying relative importance or implying the number of the indicated technical features, so that the features with "first", "second", "third", "fourth" can be explicitly or implicitly included at least one of the features.

[0039] In the utility model, unless another definite provision and limitation, the term "installation", "arrangement", "connection", "fixation", "screw connection" and so on term should do broad sense understanding, for example, can be fixed connection, also can be detachable connection, or be integrated;Can be mechanical connection, also can be electrical connection;Can be direct connection, also can indirectly connect through intermediate medium, can be two element inside's intercommunication or two element's mutual action relation, unless another definite limitation, for the ordinary skill of the art, can understand the above-mentioned term in the utility model specific meaning according to specific circumstances.

[0040] Although the embodiments of the utility model have been shown and described, it will be appreciated by those of ordinary skill in the art that various changes, modifications, alternatives, and variations can be made thereto without departing from the principles and spirit of the utility model, and the scope of the utility model is defined by the appended claims and their equivalents.

Claims

1. A bridge deflection monitoring device, characterized by, Include: Tripod (1); Mounting plate (18), mounting plate (18) is fixedly connected at the top of the tripod (1); Fixed seat (11), fixed seat (11) is installed at the top of the mounting plate (18), the top of the fixed seat (11) is provided with a support seat (2), the inner side of the support seat (2) is fixedly connected with a limiting seat (3); Limiting table (4), limiting table (4) is installed at the inner side of the limiting seat (3), the top of the limiting table (4) is provided with a limiting groove (17); Total station (5), total station (5) is placed above the limiting table (4), the bottom of the total station (5) is provided with a base (15) matched with the limiting groove (17); Adjusting rod (6), adjusting rod (6) is equidistantly and slidingly arranged in the inner side of the limiting seat (3), the top end of the adjusting rod (6) is rotatably provided with a pressing plate (7) through a damping rotating shaft.

2. A bridge deflection monitoring device according to claim 1, characterised in that: It also includes an inner sliding frame (8), the inner sliding frame (8) is slidingly arranged in the inner side of the support seat (2), the bottom end of the adjusting rod (6) is fixedly connected with the inner sliding frame (8), the inner side of the inner sliding frame (8) is threadedly connected with an adjusting screw rod (10), the adjusting screw rod (10) is rotatably connected with the support seat (2), the adjusting screw rod (10) is rotatably connected with the limiting seat (3), and the adjusting screw rod (10) is rotatably connected with the fixed seat (11).

3. A bridge deflection monitoring device according to claim 2, wherein: The outer side of the adjusting screw rod (10) is fixedly connected with a worm wheel (12), the inner side of the fixed seat (11) is rotatably provided with a worm gear (13), and the worm gear (13) is meshedly connected with the worm wheel (12).

4. A bridge deflection monitoring device as claimed in claim 3, wherein: One side of the fixed seat (11) is rotatably provided with a rotating knob (14), and one end of the worm gear (13) is fixedly connected with the rotating knob (14).

5. The bridge deflection monitoring device of claim 2, wherein: The inner side of the inner sliding frame (8) is equidistantly and slidingly provided with a plurality of limiting rods (9), one end of the limiting rod (9) is fixedly connected with the support seat (2), and the other end of the limiting rod (9) is fixedly connected with the limiting seat (3).

6. The bridge deflection monitoring device of claim 1, wherein: The top of the base (15) is equidistantly provided with a plurality of limiting pressure grooves (16) matched with the pressing plate (7).

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