CN117213347A

CN117213347A - Bridge steel construction deflection detection device

Info

Publication number: CN117213347A
Application number: CN202311309437.9A
Authority: CN
Inventors: 张双; 刘淑宝; 熊治国; 朱骏飞; 卢群发; 董延兵; 刘富爽; 阮兴华; 李�瑞; 张星
Original assignee: China Construction Second Engineering Bureau Co Ltd
Current assignee: China Construction Second Engineering Bureau Co Ltd
Priority date: 2023-10-11
Filing date: 2023-10-11
Publication date: 2023-12-12

Abstract

The application discloses a bridge steel structure deflection detection device, which relates to the technical field of detection equipment and comprises a bearing base, a pumping support column assembly, a gas input assembly, a column top bearing assembly, a support column string body, a column guiding assembly, a limit prism and a support column extrusion assembly, wherein the column top bearing assembly is used for supporting and fixing a dial indicator; the bearing base comprises a bearing plate, a bearing bin, a supporting rod and a guide pipe body; the pumping support column assembly comprises a bearing air column, a column body rolling assembly and a limiting rotating roller; one end of the bearing air column is positioned on the column body rolling component; the support column string body is formed by a plurality of column blocks with penetrating holes through connecting ropes; the cylinder guide assembly comprises a guide pipe and an extrusion rotating wheel; the limit prism is detachably fixed on the side wall of the guide tube body; the bridge steel structure deflection detection device has the advantages that the bridge steel structure deflection detection device is convenient to carry, less in environmental influence, applicable to higher bridges and capable of effectively guaranteeing the technical effect of accurate detection results.

Description

Bridge steel construction deflection detection device

Technical Field

The application relates to the technical field of detection equipment, in particular to a bridge steel structure deflection detection device.

Background

The deflection of the bridge is a very important parameter for the bridge structure, and the deflection directly reflects the vertical integral rigidity of the bridge structure and is an important basis for reflecting the linear change of the bridge; the bridge deflection detection belongs to a main detection item in a static and dynamic load test, and has the function of detecting the deformation degree of the bridge under a certain static load condition, and the bridge needs to be detected after completion or use for a certain period of time.

Because the deformation of the bridge is generally smaller under the load condition, the detection precision is required to be high, and a high-precision dial indicator is required to be adopted for detection; in the detection process, the dial indicator is in contact with the bottom of the bridge for measurement, and because the height of the bridge is higher, in order to facilitate the detection, a detector usually uses a long rod or a jacking vehicle (lifting platform) to jack the dial indicator at the bottom of the bridge; although the method is simple and convenient, certain problems exist in measurement:

when the jacking vehicles are adopted for auxiliary detection, part of the jacking vehicles below the bridge are difficult to drive in (mountain areas, green belts and the like below the bridge), and when the higher bridge is detected, the stroke of the jacking vehicles is mostly difficult to meet;

when auxiliary detection is carried out by adopting the long rod, the long rod with smaller rigidity is easy to generate larger bending deformation in vertical arrangement and transverse arrangement, so that the detection result is extremely inaccurate; the long rod with higher rigidity is generally high in mass, and is inconvenient for people to hold, transport and move; and the long rod is limited by the length and the deflection of the long rod, so that the long rod is difficult to be suitable for a bridge with higher height.

Therefore, a bridge steel structure deflection detection device which is relatively convenient to carry, relatively less affected by environment, applicable to higher bridges and capable of effectively guaranteeing relatively accurate detection results is needed.

Disclosure of Invention

The bridge steel structure deflection detection device solves the technical problems that in the prior art, the bridge steel structure deflection detection device is poor in environmental applicability and difficult to measure a higher bridge, and the detection result is poor in accuracy, and achieves the technical effects that the bridge steel structure deflection detection device is convenient to carry, is less affected by the environment, can be suitable for the higher bridge, and can effectively guarantee the detection result to be accurate.

The embodiment of the application provides a bridge steel structure deflection detection device which comprises a bearing base, a pumping support column assembly, a gas input assembly for controlling the expansion and contraction of a bearing gas column, a column top bearing assembly for supporting and fixing a dial indicator, a support column string body, a column guiding assembly, a limit prism and a support column extrusion assembly, wherein the bearing base is provided with a plurality of support columns;

the bearing base comprises a bearing plate, a bearing bin fixed at the bottom of the bearing plate, a supporting rod and a guide pipe body fixed at the top of the bearing plate;

the pumping support column assembly comprises a bearing air column which is a hose with two closed ends and is a flat belt body when not inflated, a column body rolling assembly and two limit rotating rollers which are positioned in the bearing bin;

one end of the bearing air column is positioned on the column body rolling assembly;

the support column string body is formed by a plurality of column blocks with penetrating holes through penetrating ropes, and the number of the column blocks is 3; a magnet sheet is fixed on the end face of the columnar block;

the cylinder guide assembly comprises a guide pipe fixed on the outer wall of the guide pipe body and an extrusion rotating wheel positioned in the guide pipe;

the limit prism is triangular prism-shaped and is detachably fixed on the side wall of the guide pipe body, and the top surface of the limit prism is horizontal;

the support column extrusion component is used for enabling cylindrical blocks of the bearing air column circumference to be more compact in an extrusion mode, and the main body is a combination of a telescopic rod and a plate.

Further, the gas input assembly comprises a gas transmission hose, a gas pipe winding assembly and a gas pump; the top of the air conveying hose is communicated with the bearing air column, and the bottom of the air conveying hose is wound and positioned on the air pipe winding assembly and is communicated with the air pump in the air pipe winding assembly;

the air pipe winding assembly is of a winding drum structure and is positioned in the bearing bin, and the air pipe winding assembly rotates under the control of the control unit while the cylinder winding assembly rotates, so that air is pumped into the bearing air column from the top of the bearing air column;

the gas in the air pump is conveyed to the bearing gas column through the gas conveying hose.

Further, the support column extrusion assembly comprises a bearing guide rail, a sliding telescopic column and a retaining plate; the bearing guide rail is fixed on the outer side wall of the guide body and is close to the limit prism, and is a straight guide rail which is horizontally arranged;

the sliding telescopic column is a manual or electric telescopic rod which is vertically arranged and is positioned on the bearing guide rail in a sliding way;

the retaining plate is a hard plate body, the height of the retaining plate is higher than the top surface of the limit prism, and the retaining plate is fixed at the top of the sliding telescopic column;

the abutting plate is provided with a penetrating groove which is communicated;

after the whole device is extended to a target height, an operator inserts the retaining plate between two cylindrical blocks;

after the retaining plate is inserted between two cylindrical blocks, an operator controls the sliding telescopic column to extend and extrude the cylindrical blocks, so that the cylindrical blocks above the retaining plate are more compact, and the stability of the whole device is guaranteed.

Further, the column top bearing assembly comprises a bearing block, a top plate and a clamp body;

the bearing block is fixed at the top of the bearing air column;

the top plate is fixed at the top of the bearing block and is horizontally arranged;

the bottom surface area of the top plate is more than 1.5 times of the top surface area of the bearing block;

the clamp body is a manual or electric clamp and is fixed at the top of the top plate, so that the function of clamping and fixing the dial indicator is achieved.

Preferably, the cylindrical block is crescent-shaped in cross section, and one side surface of the cylindrical block close to the bearing air column is clung to the bearing air column.

Preferably, the number of the penetrating holes is multiple, one cylindrical block can be penetrated by multiple connecting ropes, dislocation is avoided, and the stabilizing effect of the cylindrical blocks after being abutted together is further improved.

Preferably, the bearing block is internally provided with a valve body and a gas heating assembly, a gas transmission hose is communicated with the valve body, and a blowing nozzle is fixed on a top plate;

before the dial indicator contacts the bridge, firstly controlling the blowing nozzle to blow out the gas with higher temperature and pressure, and blowing away the moss dirt at the position to be detected.

Preferably, the outer side wall of the bearing air column is also fixed with a binding expansion and contraction pipe;

the binding expansion and contraction pipes are elastic round pipes made of rubber materials, are equal in number to the bearing air column, are pipe bodies with two closed ends and are uniformly distributed on the periphery of the bearing air column;

in the process of lifting the bearing air column, the expanded binding expansion shrinkage pipe fixes the support column string body in a manner of extrusion and self deformation.

Preferably, the binding expansion-shrinkage pipe is also sleeved and fixed with an outer covering pipe sleeve, the outer covering pipe sleeve is made of scratch-proof cloth, the inner wall of the outer covering pipe sleeve is covered with a rubber layer for preventing ventilation, and the outer covering pipe sleeve is always clung to the binding expansion-shrinkage pipe; in the shrinkage state of the binding expansion-shrinkage pipe, the outer covering pipe sleeve is tightly attached to the binding expansion-shrinkage pipe in a shrinkage state.

Preferably, the outer side wall of the bearing air column is also fixedly provided with three fixed bag groups, the whole fixed bag group is in a strip shape and is uniformly distributed on the circumference of the bearing air column and is equal to the bearing air column in length;

the fixed bag group consists of a first coating bag and a second coating bag, and the cross section of the fixed bag group is herringbone;

the first coating bag and the second coating bag are plate-shaped bag bodies and are identical in structure, symmetrically arranged and clung together;

the first coating bag comprises a strip-shaped soft board and an elastic strip;

the strip-shaped soft board is a plastic soft board which is integrally strip-shaped;

the elastic strip is a strip-shaped rubber elastic film;

one long side of the strip-shaped soft board is fixed on the outer wall of the bearing air column, the other long side of the strip-shaped soft board is fixed on one long side of the elastic strip, and the other long side of the elastic strip is fixed on the outer wall of the bearing air column; the distance between the fixed point of the strip-shaped soft board on the outer wall of the bearing air column and the fixed point of the elastic strip is more than 2 cm and less than 5 cm;

in the inflation process of the first coating bag, the elastic strips are gradually elastically deformed so as to enable the strip-shaped soft board to be clung to the outer wall of the cylindrical block.

One or more technical solutions provided in the embodiments of the present application at least have the following technical effects or advantages:

by providing the splicing bridge steel structure deflection detection device, the rigidity of the bridge steel structure after the bridge steel structure is stretched is ensured by utilizing the stability of a triangle, and the bridge steel structure is lifted by utilizing the columnar air bag; the technical problems that in the prior art, the bridge steel structure deflection detection device is poor in environmental applicability and difficult to measure a higher bridge and the detection result is poor in accuracy are effectively solved, and the technical effects that the bridge steel structure deflection detection device is convenient to carry, is less affected by the environment, can be suitable for the higher bridge and can effectively guarantee the detection result to be accurate are further achieved.

Drawings

FIG. 1 is a schematic diagram of the overall structure of a bridge steel structure deflection detection device;

FIG. 2 is a schematic illustration of the structure of a support column extrusion assembly;

FIG. 3 is a schematic view of the appearance structure of a bridge steel structure deflection detection device;

FIG. 4 is a schematic diagram of the positional relationship of a limiting prism;

FIG. 5 is a schematic view of the internal structure of the load bearing base and pumping support column;

FIG. 6 is a schematic view of the structure of the column guide assembly;

FIG. 7 is a schematic structural view of a fixing buckle;

FIG. 8 is a schematic diagram of the relationship between the carrier gas column and the magnetic soft strips;

fig. 9 is a schematic view showing the positional relationship of penetration holes in a cylindrical block;

FIG. 10 is a schematic view of a slit-like penetration hole;

FIG. 11 is a schematic view of the external appearance of a cylindrical block;

FIG. 12 is a schematic view of a cylindrical block with a crescent-shaped cross-section;

FIG. 13 is a schematic diagram of a support column string;

FIG. 14 is a schematic diagram of the layout relationship of a string of support columns;

FIG. 15 is a schematic view of the relationship between the bearing gas column and the binding expansion and contraction tube;

FIG. 16 is a schematic view of the positional relationship between the binding expansion-shrinkage tube and the outer covering tube sleeve;

FIG. 17 is a schematic diagram showing a deformed state of the binding expansion-contraction tube;

FIG. 18 is a schematic view of the positional relationship of the first arcuate bladder, the second arcuate bladder, and the carrier gas column;

fig. 19 is a schematic view of a first arcuate bladder.

In the figure:

the bearing plate 110, the bearing bin 120, the support bar 130, the guide tube body 140, the gas transmission guide tube 150, the bearing gas column 210, the magnetic soft strip 211, the binding expansion shrinkage tube 212, the outer covering tube sleeve 213, the first covering bag 214, the second covering bag 215, the strip soft plate 216, the elastic strip 217, the soft magnetic strip 218, the cylinder rolling assembly 220, the limit rotating roller 230, the gas transmission hose 310, the gas pipe rolling assembly 320, the bearing block 410, the top plate 420, the gas blowing nozzle 421, the fixing buckle 422, the clip body 430, the support column string 500, the cylindrical block 510, the penetrating hole 511, the connecting rope 520, the guide tube 610, the support frame 611, the extrusion rotating wheel 620, the limit prism 700, the bearing guide rail 810, the sliding expansion column 820, the resisting plate 830 and the penetrating groove 831.

Detailed Description

In order that the application may be readily understood, a more complete description of the application will be rendered by reference to the appended drawings; the preferred embodiments of the present application are illustrated in the drawings, however, the present application may be embodied in many different forms and is not limited to the embodiments described herein; rather, these embodiments are provided so that this disclosure will be thorough and complete.

It should be noted that the terms "vertical", "horizontal", "upper", "lower", "left", "right", and the like are used herein for illustrative purposes only and do not represent the only embodiment.

Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs; the terminology used herein in the description of the application is for the purpose of describing particular embodiments only and is not intended to be limiting of the application; the term "and/or" as used herein includes any and all combinations of one or more of the associated listed items.

Example 1

As shown in fig. 1 to 6, the bridge steel structure deflection detection device of the present application includes a bearing base, a pumping support column assembly, a gas input assembly, a column top bearing assembly, a support column string 500, a column guiding assembly, a limit prism 700, a support column extrusion assembly, a power assembly and a control unit.

The bearing base plays a role of a bearing frame and comprises a bearing plate 110, a bearing bin 120, a supporting rod 130 and a guide body 140;

the bearing plate 110 is a hard plate body, and plays a role in bearing and connecting;

the bearing bin 120 is a hollow shell, and is fixed at the bottom of the bearing plate 110 to perform a containing function;

the supporting rods 130 are electric or manual telescopic rods, are longitudinally arranged, have sharp bottoms and are 3 or more in number, and the supporting rods 130 are fixed at the bottoms of the bearing plates 110 and can be placed on the ground or inserted into the soil when in use;

the guiding pipe 140 is a rigid pipe with an inner diameter greater than 20 cm, and a bottom fixed on the top of the bearing plate 110 for guiding the pumping support column to expand and move;

the carrying base is also fixed with a strap for being carried by an operator, and the strap is fixed on the carrying plate 110 and/or the guiding tube 140.

The pumping support column assembly comprises a bearing air column 210, a column body rolling assembly 220 and a limit rotating roller 230;

the air column 210 is a hose with two closed ends, made of cloth, covered with a rubber layer, capable of expanding and contracting under the action of air pressure during ventilation, and a flat belt body when not expanding; one end of the bearing air column 210 is wound and positioned on the column winding assembly 220, and the other end penetrates through the bearing bin 120 and the guide tube body 140 and penetrates out from the top of the guide tube body 140;

the cylinder winding assembly 220 is in a reel structure, is controlled by a control unit to rotate, and is positioned in the bearing bin 120;

the number of the limiting rotating rollers 230 is two, the limiting rotating rollers are parallel to each other, are rotatably connected inside the bearing bin 120, and are both positioned between the cylinder rolling assembly 220 and the guide pipe body 140; the spacing between the two spacing rotator rollers 230 is less than 1.5 cm, and the carrier gas column 210 passes between the two spacing rotator rollers 230.

The gas input assembly is used for pumping gas into the bearing gas column 210 and exhausting gas from the bearing gas column 210 under the control of the control unit, so as to control the bearing gas column 210 to expand and contract; the gas input assembly comprises a gas transmission hose 310, a gas pipe winding assembly 320 and a gas pump; the top of the air delivery hose 310 is communicated with the bearing air column 210, and the bottom is wound and positioned on the air pipe winding assembly 320 and is communicated with an air pump in the air pipe winding assembly 320; the air pipe winding assembly 320 is in a roll structure, is positioned inside the bearing bin 120, and rotates while the cylinder winding assembly 220 rotates under the control of the control unit, so as to pump air into the bearing air column 210 from the top of the bearing air column 210; the gas in the gas pump is delivered to the carrier gas column 210 via the gas delivery hose 310.

Further, the outer sidewall of the guiding body 140 is fixed with a gas transmission guiding tube 150 longitudinally arranged, the guiding body 140 is a hard tube, and the gas transmission hose 310 passes through the gas transmission guiding tube 150.

The column top bearing assembly is used for supporting and fixing the dial indicator and comprises a bearing block 410, a top plate 420 and a clamp body 430; the carrier block 410 is fixed on top of the carrier gas column 210; the top plate 420 is fixed on top of the bearing block 410 and horizontally arranged; the top of the air hose 310 is fixed on the sidewall of the carrier block 410 and is communicated with the carrier air column 210; the bottom surface area of the top plate 420 is more than 1.5 times the top surface area of the carrier block 410; the clamp body 430 is a manual or electric clamp, and is fixed on the top of the top plate 420, so as to clamp and fix the dial indicator.

Preferably, an electric telescopic rod controlled by the control unit is connected between the bearing block 410 and the top plate 420, and when in actual use, the height of the dial indicator can be adjusted by the electric telescopic rod.

As shown in fig. 13, the support column string 500 is formed by a plurality of cylindrical blocks 510 penetrating through a connecting rope 520, and the axial length of the cylindrical blocks 510 is greater than 25 cm; the connecting rope 520 is a steel wire rope, and the cylindrical block 510 is provided with a penetrating hole 511 which has the same axial direction as the cylindrical block 510 and is used for the connecting rope 520 to pass through; the axial length of the cylindrical block 510 on one connecting rope 520 is shorter than the connecting rope 520 by more than twenty centimeters; a magnet sheet is fixed on the columnar block 510, and the magnet sheet enables the columnar block 510 to be adsorbed together; in use, one end of one cylindrical block 510 at the end is detachably and fixedly connected to the bottom of the top plate 420; the number of the support column strings 500 is 3; the distance between the fixing point of the support column string 500 at the top and the axis of the guide tube 140 is smaller than the distance between the retaining plate 830 and the axis of the guide tube 140, and the distance difference is more than 10 cm, and all support column strings 500 are in an inclined state.

Preferably, as shown in fig. 11, the cylindrical block 510 is hollow and made of rigid plastic.

The cylinder guide assembly is used for guiding the support column string 500 to move upwards, and comprises a guide pipe 610 and a pressing rotating wheel 620 positioned inside the guide pipe 610; the guide pipe 610 is a hard pipe body, and is vertically or obliquely arranged and fixed on the outer wall of the guide pipe body 140 through a supporting frame 611; the number of the guide pipes 610 is 3, and the guide pipes 610 are uniformly distributed on the circumference of the guide pipes 610; the extrusion rotating wheel 620 is a cylindrical wheel with a built-in motor and controlled by a control unit, and is covered with a soft rubber layer, and when in use, the extrusion rotating wheel always abuts against the outer wall of the cylindrical block 510, and drives the cylindrical block 510 to move upwards through friction force.

The limit prism 700 is a triangular prism, and the cross section of the limit prism is a right angle or an acute triangle, so as to prevent the upward moving cylindrical block 510 from sliding down; the limit prism 700 is horizontally arranged and detachably fixed on the side wall of the guide body 140, and the top surface is horizontal; the number of the limit prisms 700 is three, and the limit prisms are located above the guide tube 610 and uniformly distributed on the circumference of the guide tube body 140, and are in one-to-one correspondence with the guide tube 610.

The support column extrusion assembly is used for enabling the cylindrical blocks 510 carrying the circumference of the air column 210 to be more compact in an extrusion manner, so as to ensure stability, and comprises a bearing guide rail 810, a sliding telescopic column 820 and a retaining plate 830; the bearing rail 810 is fixed on the outer sidewall of the guide body 140 and is disposed near the limit prism 700, and is a straight rail disposed horizontally; the sliding telescopic column 820 is a vertically arranged manual or electric telescopic rod, and is slidably positioned on the bearing guide rail 810; the retaining plate 830 is a hard plate body, and has a height higher than the top surface of the limit prism 700, and is fixed on the top of the sliding telescopic column 820; the retaining plate 830 is provided with a penetrating groove 831, and the penetrating groove 831 is communicated; after the entire device is extended to the target height, the operator can insert the retaining plate 830 between the two cylindrical blocks 510; after the retaining plate 830 is inserted between the two cylindrical blocks 510, an operator controls the sliding telescopic column 820 to extend and squeeze the cylindrical blocks 510, so that the cylindrical blocks 510 above the retaining plate 830 are more compact, and the stability of the whole device is guaranteed.

Preferably, the bearing plate 110 is provided with a laser pen and a level meter.

The power assembly is used for providing power for the operation of each component of the bridge steel structure deflection detection device, and the control unit plays a role in controlling the coordinated operation of each component of the bridge steel structure deflection detection device, which is the prior art and is not described in detail herein.

Preferably, the control unit is a combination of a programmable logic controller and a control key.

The bridge steel structure deflection detection device of the embodiment of the application is practically used:

1. an operator carries the bridge steel structure deflection detection device under the bridge (the support column string body 500 can be dragged to a target position, and other components can be directly carried); placing the device right below a target measurement position and leveling; fixing a dial indicator on the column top bearing assembly;

2. holding the support column string 500 through the guide tube 610 and fixing the end of the support column string 500 under the top plate 420; at this time, the cylindrical blocks 510 are attracted together by magnetic force, and the cylindrical blocks 510 are allowed to move up but not down by the existence of the limit prisms 700 (the bottom surface of the cylindrical block 510 closest to the top surface of the limit prism 700 will abut against the top surface of the limit prism 700), and the pressing and rotating wheel 620 in the guide tube 610 abuts against the cylindrical blocks 510;

3. the gas input assembly is controlled to operate, and the gas pipe winding assembly 320 is controlled to release the bearing gas column 210, so that the bearing gas column 210 is gradually swelled and gradually ascended, and the support column string 500 is driven to move upwards in the ascending process (the upward moving process of the support column string 500 is also subjected to the force from the extrusion rotating wheel 620, and a string change rod is used in the upward moving process); the three support column strings 500 enable the bearing air column 210 to stably move upwards and reach a height of more than 15 meters; until the dial indicator reaches the target position;

4. testing (the testing process is the prior art and is not described in detail herein);

5. after the test is completed, the limit prism 700 can be turned over or detached, the operation of the gas input assembly is controlled, and the gas pipe rolling assembly 320 is controlled to roll the bearing gas column 210; and finally resetting each component.

Preferably, the support column string 500 may be wound into a roll during transportation, and pulled to a target position (the structure of the support column string 500 is easier to store, transport and transfer) when needed for use (rolled or unrolled).

Preferably, an electric reel for winding the support column string 500 is provided on a vehicle transporting the support column string 500.

Preferably, to reduce deflection of the carrier gas column 210 due to force during elongation; the number of the gas transmission hoses 310 of the gas input assembly is three; three gas transmission hoses 310 are uniformly distributed on the circumference of the bearing gas column 210.

Preferably, as shown in fig. 8, a plurality of magnetic soft strips 211 are uniformly distributed on the inner wall of the carrier gas column 210, and the magnetic soft strips 211 are made of rubber magnetic material and have the same length as the carrier gas column 210; the inner wall of the air hose 310 is also uniformly provided with a plurality of magnetic soft strips 211, and when the load-bearing air column 210 is extended, the air hose 310 is tightly attached to the outer wall of the load-bearing air column 210 under the action of magnetic force.

Preferably, in order to facilitate carrying and moving of the support column string 500 and further ensure stability of the whole device, as shown in fig. 12, the cylindrical block 510 has a crescent cross section, and one side surface of the cylindrical block 510 close to the carrier gas column 210 is tightly attached to the carrier gas column 210.

Preferably, in order to facilitate carrying and moving of the support column string 500 and further ensure stability of the whole device, as shown in fig. 9, the number of the penetrating holes 511 is multiple, and one cylindrical block 510 is penetrated by multiple connecting ropes 520, so that dislocation is avoided and the stabilizing effect of the cylindrical blocks 510 after being abutted together is further improved.

Preferably, in order to facilitate carrying and moving of the support column string 500 and further secure stability of the whole device, as shown in fig. 10, the penetrating hole 511 is a rectangular square hole, and the connection string 520 is a belt shape.

Considering that the bridge detection period is longer, the bridge is generally detected every three years, moss dirt is unavoidably generated at the bottom of the bridge in the period, and the bridge is easily affected by the influence of the moss dirt when deflection detection is carried out by using a dial indicator, so that the detection result is affected; preferably, the bearing block 410 is internally provided with a valve body and a gas heating component, the gas hose 310 is communicated with the valve body, and the top plate 420 is fixed with a blowing nozzle 421; before the dial indicator contacts the bridge, firstly, the blowing nozzle 421 is controlled to blow out the gas with higher temperature and pressure, so as to blow away the moss dirt at the position to be measured.

Preferably, magnetic blocks are arranged in the cylindrical blocks 510 with the crescent cross section, a plurality of magnetic soft strips 211 are uniformly distributed on the inner wall of the bearing air column 210, and the cylindrical blocks 510 are attached to the outer wall of the bearing air column 210 under the influence of magnetic force.

Preferably, as shown in fig. 3, 7 and 14, for convenience of carrying and arranging (the dragging and storage of the plurality of support column strings 500 are relatively inconvenient), one support column string 500 can be used as three after being bent twice; a plurality of fixing buckles 422 are uniformly distributed at the bottom of the top plate 420, and the cylindrical blocks 510 can be fixed by inserting the fixing buckles 422 into the penetrating holes 511.

In order to remove dirt possibly adhered to the cylindrical block 510, a brush is provided on the inner wall of the guide tube 610.

The technical scheme provided by the embodiment of the application at least has the following technical effects or advantages:

the technical problems that in the prior art, the bridge steel structure deflection detection device is poor in environmental applicability, a higher bridge is difficult to measure, and the accuracy of a detection result is poor are solved, and the technical effects that the bridge steel structure deflection detection device is convenient to carry, is less affected by the environment, can be suitable for the higher bridge, and can effectively guarantee the accuracy of the detection result are realized.

Example two

In order to further improve the stability of the bridge steel structure deflection detection device in the use process, the embodiment of the application optimizes and improves the structure of the bearing air column 210 on the basis of the embodiment, specifically:

as shown in fig. 15 to 17, a binding expansion-shrinkage tube 212 is further fixed on the outer sidewall of the bearing air column 210; the binding expansion-shrinkage tubes 212 are elastic round tubes made of rubber, have the same length as the bearing air column 210, are tube bodies with two closed ends and are uniformly distributed on the circumference of the bearing air column 210; the air hose 310 is communicated with the bearing air column 210 and is also communicated with each binding expansion and contraction pipe 212; in the process of lifting the bearing air column 210, the expanded binding expansion-shrinkage tube 212 fixes the support column string 500 in a manner of extrusion and self-deformation.

Preferably, in order to prolong the service life of the binding expansion-shrinkage tube 212, an outer covering tube sleeve 213 is further sleeved and fixed on the binding expansion-shrinkage tube 212, the outer covering tube sleeve 213 is made of scratch-proof cloth, a rubber layer for preventing ventilation is covered on the inner wall of the outer covering tube sleeve 213, and the outer covering tube sleeve 213 is always tightly attached to the binding expansion-shrinkage tube 212; as shown in fig. 16, in the contracted state of the binding expansion-shrinkage tube 212, the outer sheath 213 is in a collapsed state and is tightly attached to the binding expansion-shrinkage tube 212.

Example III

as shown in fig. 18 and 19, the outer side wall of the carrier gas column 210 is further fixed with three fixed bag sets, the whole fixed bag set is in a strip shape, and is uniformly distributed on the circumference of the carrier gas column 210 and has the same length as the carrier gas column 210; the air hose 310 is communicated with the bearing air column 210 and is also communicated with each fixed bag group;

the fixed bag group consists of a first coating bag 214 and a second coating bag 215, and the cross section of the fixed bag group is herringbone; the first wrapping bag 214 and the second wrapping bag 215 are plate-shaped bags, and have the same structure, are symmetrically arranged and are tightly attached together; the first wrapping bag 214 is in a straight or triangular shape in a normal state (the amount of the internal gas is small, and the state is not before elastic deformation), and when the amount of the internal gas increases to cause elastic deformation of the first wrapping bag, the whole is bent to wrap the support column string 500; the first wrapping bag 214 and the second wrapping bag 215 have different bending directions and are respectively directed in directions away from each other;

further, as shown in fig. 19, the first covering bag 214 includes a strip-shaped soft board 216 and an elastic strip 217; the strip-shaped soft board 216 is a plastic soft board which is integrally strip-shaped; the elastic strip 217 is a strip-shaped rubber elastic film; one long side of the strip-shaped soft plate 216 is fixed on the outer wall of the bearing air column 210, the other long side of the strip-shaped soft plate is fixed on one long side of the elastic strip 217, and the other long side of the elastic strip 217 is fixed on the outer wall of the bearing air column 210; the spacing between the fixing point of the strip-shaped flexible plate 216 on the outer wall of the carrying air column 210 and the fixing point of the elastic strip 217 is greater than 2 cm and less than 5 cm; during inflation of the first covering bag 214, the elastic strips 217 are gradually elastically deformed so as to enable the strip-shaped soft plate 216 to be tightly attached to the outer wall of the cylindrical block 510.

Preferably, the soft magnetic strips 218 made of rubber magnetic material are fixed on the edges of the strip-shaped soft plates 216 and the elastic strips 217 fixed together; the cylindrical block 510 is internally provided with a magnet; the soft magnetic stripe 218 will be held against the cylindrical block 510 by the magnetic force.

Preferably, an outer covering pipe sleeve 213 is sleeved and fixed on the first covering bag 214, the outer covering pipe sleeve 213 is made of scratch-proof cloth, a rubber layer for preventing ventilation is covered on the inner wall of the outer covering pipe sleeve 213, and the outer covering pipe sleeve 213 is always clung to the first covering bag 214; in the contracted state of the first covering bag 214, the outer covering tube 213 is in a contracted state and is tightly attached to the first covering bag 214.

The above description is only of the preferred embodiments of the present application and is not intended to limit the present application, but various modifications and variations can be made to the present application by those skilled in the art. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application should be included in the protection scope of the present application.

Claims

1. The utility model provides a bridge steel construction deflection detection device which characterized in that: the device comprises a bearing base, a pumping support column assembly, a gas input assembly for controlling the expansion and contraction of a bearing gas column, a column top bearing assembly for supporting and fixing a dial indicator, a support column string body, a column guiding assembly, a limit prism and a support column extrusion assembly;

the cylinder guide assembly comprises a guide pipe fixed on the outer wall of the guide pipe body and an extrusion rotating wheel positioned in the guide pipe; the limit prism is triangular prism-shaped and is detachably fixed on the side wall of the guide pipe body, and the top surface of the limit prism is horizontal;

2. The bridge steel structure deflection detection device of claim 1, wherein: the gas input assembly comprises a gas transmission hose, a gas pipe winding assembly and a gas pump; the top of the air conveying hose is communicated with the bearing air column, and the bottom of the air conveying hose is wound and positioned on the air pipe winding assembly and is communicated with the air pump in the air pipe winding assembly;

3. The bridge steel structure deflection detection device of claim 1, wherein: the support column extrusion assembly comprises a bearing guide rail, a sliding telescopic column and a retaining plate; the bearing guide rail is fixed on the outer side wall of the guide body and is close to the limit prism, and is a straight guide rail which is horizontally arranged;

the abutting plate is provided with a penetrating groove which is communicated;

4. The bridge steel structure deflection detection device of claim 1, wherein: the column top bearing assembly comprises a bearing block, a top plate and a clamp body;

the bearing block is fixed at the top of the bearing air column;

5. A bridge steel structure deflection detection apparatus according to any one of claims 1 to 4, wherein: the cylindrical block is crescent in cross section, and one side face of the cylindrical block close to the bearing air column is clung to the bearing air column.

6. The bridge steel structure deflection detection device of claim 5, wherein: the number of the penetrating holes is multiple, one cylindrical block can be penetrated by multiple connecting ropes, dislocation is avoided, and the stabilizing effect of the cylindrical blocks after being abutted together is further improved.

7. A bridge steel structure deflection detection apparatus according to any one of claims 1 to 4, wherein: the bearing block is internally provided with a valve body and a gas heating assembly, a gas transmission hose is communicated with the valve body, and a blowing nozzle is fixed on a top plate;

8. The bridge steel structure deflection detection device of claim 5, wherein: a binding expansion and contraction pipe is also fixed on the outer side wall of the bearing air column;

9. The bridge steel structure deflection detection device of claim 8, wherein: an outer covering pipe sleeve is sleeved and fixed on the binding expansion-shrinkage pipe, the outer covering pipe sleeve is made of scratch-proof cloth, a rubber layer for preventing ventilation is covered on the inner wall of the outer covering pipe sleeve, and the outer covering pipe sleeve is always clung to the binding expansion-shrinkage pipe; in the shrinkage state of the binding expansion-shrinkage pipe, the outer covering pipe sleeve is tightly attached to the binding expansion-shrinkage pipe in a shrinkage state.

10. The bridge steel structure deflection detection device of claim 5, wherein: the outer side wall of the bearing air column is also fixedly provided with three fixed bag groups, the whole fixed bag group is in a strip shape, and the fixed bag groups are uniformly distributed on the periphery of the bearing air column and have equal length with the bearing air column;

the first coating bag comprises a strip-shaped soft board and an elastic strip;

the elastic strip is a strip-shaped rubber elastic film;