CN219121666U - Deflection performance detection device of bridge truss model - Google Patents
Deflection performance detection device of bridge truss model Download PDFInfo
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- CN219121666U CN219121666U CN202320090231.0U CN202320090231U CN219121666U CN 219121666 U CN219121666 U CN 219121666U CN 202320090231 U CN202320090231 U CN 202320090231U CN 219121666 U CN219121666 U CN 219121666U
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Abstract
The utility model belongs to the field of bridge detection, and discloses a deflection performance detection device of a bridge truss model, which comprises a base frame, a bearing plate, a load vehicle, a traveling crane driving assembly and a distance measuring sensor, wherein the base frame comprises a pair of positioning sub-frames and truss bearing sub-frames positioned between the pair of positioning sub-frames, the truss bearing sub-frames are movably arranged along the vertical direction, two ends of the bearing plate are respectively arranged at the tops of the two positioning sub-frames, and the load vehicle is arranged on the bearing plate; the driving assembly is used for driving the load vehicle to move, the transmitting end of the ranging sensor vertically faces the truss bearing sub-frame, when the driving assembly drives the load vehicle to travel to a preset position paved on the preset bridge truss bearing plate, the driving assembly moves to a position vertically corresponding to the load vehicle through the moving ranging sensor, and the ranging sensor detects the local sinking movement amount of the preset bridge truss vertically corresponding to the load vehicle, so that the deflection generated by the preset bridge truss at the moment is obtained.
Description
Technical Field
The utility model belongs to the field of bridge detection, and particularly relates to a deflection performance detection device of a bridge truss model.
Background
The bridge structural design has diversity, bending, namely deflection performance test is difficult to carry out on a bridge in actual engineering in current teaching and engineering, and the design and construction of the bridge are indispensable to the current traffic industry which rapidly develops, so that the structural performance of the bridge is tested by making an equal proportion bridge model, certain reference and reference effects are provided for site construction and teaching, and a bridge truss formed by lap joint of stress rods is adopted as a simulated bridge.
At present, a manual measurement mode is adopted for deflection performance test of the bridge truss, so that the operation is complicated, and the labor cost is high.
Disclosure of Invention
Aiming at the defects of the prior art, the utility model provides the deflection performance detection device for the bridge truss model, which can perform high-automation deflection performance test on the bridge truss by a specific base frame structure matched with a ranging sensor, thereby greatly simplifying the operation and obviously reducing the labor cost.
In order to achieve the above purpose, the present utility model provides the following technical solutions:
a deflection performance detection device of a bridge truss model, configured to detect deflection of a predetermined bridge truss when carrying a dynamic load, comprising: the device comprises a base frame, a bearing plate and a load vehicle, wherein the base frame is horizontally arranged and comprises a pair of positioning sub-frames and a truss bearing sub-frame positioned between the pair of positioning sub-frames, the pair of positioning sub-frames vertically protrude upwards, the tops of the pair of positioning sub-frames are positioned on the same horizontal plane, the connecting line direction of the pair of positioning sub-frames is taken as the vehicle running direction, the two ends of the bearing plate are respectively arranged at the tops of the two positioning sub-frames, the bearing plate and the truss bearing sub-frame are correspondingly arranged in the vertical direction, and the load vehicle is arranged on the bearing plate; the driving assembly is used for driving the load vehicle to move along the vehicle driving direction, the ranging sensor is movably arranged at the bottom of the base frame along the vehicle driving direction, and the transmitting end of the ranging sensor is vertically arranged towards the truss bearing sub-frame, wherein the truss bearing sub-frame is movably arranged along the vertical direction, the preset bridge truss is arranged on the truss bearing sub-frame, and the bearing plate is paved at the top of the preset bridge truss.
Preferably, the utility model further comprises a light blocking strip arranged on the lower surface of the preset bridge truss along the vehicle running direction, and when the preset bridge truss is arranged on the truss bearing sub-frame, the light blocking strip corresponds to the emitting end of the ranging sensor along the vertical direction.
Preferably, the positioning subframe is a rectangular frame, and the positioning subframe is provided with scale marks along the vertical direction.
Further, the utility model also comprises a top platform plate, the top of the positioning subframe is a horizontal frame surface, and the top platform plate is correspondingly paved on the top of the positioning subframe.
Further, the positioning subframe is formed by assembling a plurality of linear profiles through profile connectors, the number of truss bearing subframes is a plurality, and the truss bearing subframes have different extension lengths.
Preferably, the driving assembly comprises a screw rod gear motor and a linkage screw rod, the screw rod gear motor is arranged at the top of the positioning subframe, an output shaft of the screw rod gear motor extends along the driving direction and is higher than the bearing plate, one end of the linkage screw rod is rotationally coupled with an output end of the screw rod gear motor, and the other end of the linkage screw rod is in threaded connection with the load vehicle.
Preferably, the load vehicle comprises a load plate and a mounting vertical rod, wherein the mounting vertical rod is movably arranged on the load plate, and the mounting vertical rod is used for mounting a preset weight.
Further, the load board has the cross spout, and one section of cross spout extends along the car direction, and another section is perpendicular with the car direction, and the bottom of carrying the montant has the locking flange to have threaded connection's lock nut on the carrying montant, carry the montant through locking flange and lock nut detachably setting on the load board.
Preferably, two limiting convex edges which extend continuously along the vehicle running direction are respectively formed near two sides of the bearing plate, and the movement of the load vehicle is limited between the two limiting convex edges.
Preferably, the utility model further comprises a wire fixing frame and a plurality of suspension wires, wherein the wire fixing frame is a rectangular frame and is vertically arranged on the truss bearing sub-frame, the bearing plate and the preset bridge truss penetrate through the wire fixing frame, one end of each suspension wire is fixed on the wire fixing frame, and the other end of each suspension wire is fixed on the side part of the truss bearing sub-frame.
Compared with the prior art, the utility model has the beneficial effects that:
1. because the deflection performance detection device of the bridge truss model comprises a base frame, a bearing plate, a load vehicle, a traveling crane driving assembly and a distance measuring sensor, wherein the base frame comprises a pair of positioning sub-frames and truss bearing sub-frames positioned between the pair of positioning sub-frames, the connecting line direction of the pair of positioning sub-frames is taken as the traveling direction, the truss bearing sub-frames are movably arranged along the vertical direction, two ends of the bearing plate are respectively arranged at the tops of the two positioning sub-frames, and the load vehicle is arranged on the bearing plate; the driving assembly is used for driving the load vehicle to move along the driving direction, the transmitting end of the ranging sensor vertically faces the truss bearing sub-frame, when the driving assembly is used for driving the load vehicle to travel to a preset position paved on a preset bridge truss bearing plate, the driving assembly is used for moving the ranging sensor to a position vertically corresponding to the load vehicle, and the ranging sensor is used for detecting the local sinking movement quantity of the preset bridge truss vertically corresponding to the load vehicle to obtain the deflection generated by the preset bridge truss at the moment.
2. Because the utility model also comprises the light blocking strip which is arranged on the lower surface of the preset bridge truss along the vehicle running direction, when the preset bridge truss is arranged on the truss bearing subframe, the light blocking strip corresponds to the transmitting end of the ranging sensor along the vertical direction, and therefore, the ranging sensor is a laser ranging sensor, and the laser beam emitted by the laser ranging sensor can be reflected more effectively through the light blocking strip, so that the measuring accuracy of the ranging sensor is greatly improved.
3. Because the positioning subframe is a rectangular frame and is provided with the scale marks along the vertical direction, the whole level of the bearing plate is required to be ensured when the positioning subframe is implemented, namely the load vehicle moves on the horizontal plane, so that a tester can conveniently adjust the truss bearing subframe up and down through the scale marks, the bearing plate paved on the truss bearing subframe is kept level, and the preparation work of the positioning subframe before measurement is completed quickly.
4. Because the positioning sub-frame is formed by assembling a plurality of linear sectional materials through the sectional material connecting pieces, the number of the truss bearing sub-frames is multiple, and the truss bearing sub-frames have different extension lengths, when the preset bridge trusses with different extension lengths are switched, the deflection of the preset bridge trusses with different lengths can be realized by only disassembling and assembling part of the positioning sub-frame and replacing the different truss bearing sub-frames.
5. Because the load board is provided with the cross chute, one section of the cross chute extends along the vehicle running direction, the other section of the cross chute is vertical to the vehicle running direction, the bottom end of the mounting vertical rod is provided with the clamping flange, the mounting vertical rod is provided with the locking nut in threaded connection, and the mounting vertical rod is detachably arranged on the load board through the clamping flange and the locking nut, the utility model enables the preset weight to be mounted on different parts of the load vehicle by adjusting the fixing position of the mounting vertical rod in the cross chute, so that when the load vehicle applies dynamic load to the preset bridge truss, the dynamic load loading condition of single-side unbalanced load can be simulated.
6. Because the utility model also comprises a thread fixing frame and a plurality of suspension threads, the thread fixing frame is a rectangular frame and is vertically arranged on the truss bearing sub-frame, and the bearing plate and the preset bridge truss both pass through the thread fixing frame, one end of the suspension thread is fixed on the thread fixing frame, and the other end is fixed on the side part of the truss bearing sub-frame, the utility model can be matched with the preset bridge truss to realize effective simulation of the stress of the inclined cable bridge, thereby measuring the deflection performance of the inclined cable bridge.
Drawings
FIG. 1 is a schematic perspective view of a device for detecting deflection performance of a bridge truss model according to an embodiment of the present utility model;
FIG. 2 is a schematic perspective view of a device for detecting deflection performance of a bridge truss model according to an embodiment of the present utility model;
FIG. 3 is a partial schematic view of a positioning subframe according to a first embodiment of the present utility model;
fig. 4 is a schematic view of a carrier plate according to a first embodiment of the utility model;
FIG. 5 is a schematic view of a load vehicle according to a first embodiment of the utility model;
fig. 6 is a schematic diagram of the fit of a weight and a mounting stem according to the first embodiment of the present utility model;
FIG. 7 is a schematic view of a driving assembly and a base frame according to a first embodiment of the present utility model;
FIG. 8 is a schematic view of a sensor housing according to a first embodiment of the present utility model;
FIG. 9 is a schematic perspective view of a device for detecting deflection performance of a bridge truss model according to a second embodiment of the present utility model;
in the figure: 100. the deflection performance detection device of the bridge truss model comprises 10, a base frame, A, a linear section, A1, a section connecting piece, 11, a positioning subframe, 111, a scale mark, D, a vehicle running direction, 12, a truss bearing subframe, 121, a bearing frame plate, B, a preset bridge truss, 13, a driving support subframe, 20, a light blocking strip, 30, a top platform plate, 40, a bearing plate, 40a, a limit convex edge, 50, a load vehicle, 51, a load plate, 51a, a cross chute, 52, a mounting vertical rod, 521, a locking nut, W, a weight of a weighing weight, 60, a driving assembly, 61, an assembly housing, 62, a screw rod speed reducing motor, 63, a linkage screw rod, 70, a ranging assembly, 71, a sensor housing, 711, a laser perforation, L, a laser emission path, 80, a thread fixing frame, 90 and a suspension thread.
Detailed Description
In order to make the technical means, creation characteristics, achievement purposes and effects achieved by the present utility model easy to understand, the following examples specifically describe a deflection performance detecting device for a bridge truss model according to the present utility model with reference to the accompanying drawings, and it should be noted that the description of these embodiments is for aiding understanding of the present utility model, but not limiting the present utility model.
Example 1
As shown in fig. 1 and fig. 2, the deflection performance detecting device 100 of the bridge truss model in this embodiment is configured to detect deflection of a predetermined bridge truss B at a predetermined position when carrying a dynamic load, specifically, detect the deflection of the predetermined bridge truss B, that is, a distance that a structure of the predetermined bridge truss B sags downward under the influence of the load.
The deflection performance detection device 100 of the bridge truss model comprises a base frame 10, a light blocking strip 20, a top platform plate 30, a bearing plate 40, a load car 50, a travelling crane driving assembly 60 and a distance measuring assembly 70.
The base frame 10 is horizontally disposed and includes a pair of positioning sub-frames 11, a truss-carrying sub-frame 12, and a driving support sub-frame 13.
As shown in fig. 3, the positioning sub-frame 11 is a rectangular frame, that is, the top of the positioning sub-frame 11 is a horizontal frame surface, and is formed by detachably assembling a plurality of linear profiles a through a profile connecting piece A1, a pair of positioning sub-frames 11 protrude upward vertically and the tops are all located on the same horizontal plane, and the positioning sub-frames 11 are provided with scale marks 111 along the vertical direction, and the connecting line direction of the pair of positioning sub-frames 11 is taken as the vehicle running direction D, specifically, the scale marks 111 are located on the linear profiles a extending vertically.
The truss-carrying sub-frame 12 is located between a pair of positioning sub-frames 11, is movably disposed in a vertical direction, a predetermined bridge truss B is disposed on the truss-carrying sub-frame 12, specifically, the truss-carrying sub-frame 12 is a rectangular frame, and a length direction of the frame extends in a vehicle-running direction D, and scale marks 111 are located in the vicinity of a length side of the truss-carrying sub-frame 12, so that when the truss-carrying sub-frame 12 moves in the vertical direction, the scale marks 111 can show a distance by which the truss-carrying sub-frame 12 moves vertically; the number of truss bearing sub-frames 12 is multiple, and the truss bearing sub-frames 12 have different extending length specifications, when the truss bearing sub-frames 12 are required to be replaced, firstly, the vertical linear section bar A of the positioning sub-frame 11 is removed, then the removed linear section bar A is assembled again according to the length of the truss bearing sub-frame 12 required to be replaced, and the replacement of the truss bearing sub-frames 12 with different lengths can be realized.
In the present embodiment, the driving support subframe 13 is provided on top of at least one positioning subframe 11, and vertically upward.
The light blocking strip 20 is disposed on a lower surface of the predetermined bridge truss B in the vehicle traveling direction D, and in particular, the light blocking strip 20 is adapted to cooperate with the ranging assembly 70.
The number of the top deck boards 30 is a pair, which are correspondingly laid on the top of the positioning subframe 11, specifically, the driving support subframe 13 is located at the outer side of the top deck boards 30, and the top end of the driving support subframe 13 is higher than the top deck boards 30 by a predetermined distance.
As shown in fig. 4, the carrying board 40 is used for carrying the carriage 50, two ends of the carrying board 40 are respectively arranged on the top platform boards 30 on the tops of the two positioning sub-frames 11, that is, the carrying board 40 is laid on the top of the predetermined bridge truss B, and the carrying board 40 is arranged corresponding to the truss carrying sub-frames 12 in the vertical direction.
Two limiting flanges 40a, each of which continuously extends in the vehicle traveling direction D, are formed near both sides of the loading plate 40, respectively, and the movement of the loading vehicle 50 is limited between the two limiting flanges 40a, so that the loading vehicle 50 moves on the loading plate 40 in the vehicle traveling direction D.
As shown in fig. 5, the load carriage 50 is disposed on the carrying plate 40, and includes a load plate 51 for mounting the vertical rods and 52.
The load plate 51 is horizontally disposed and has a cross chute 51a, one section of the cross chute 51a extends in the vehicle traveling direction D, and the other section is perpendicular to the vehicle traveling direction D.
As shown in fig. 6, the mounting vertical rod 52 is vertically disposed and movably disposed on the load board 51, the mounting vertical rod 52 is used for mounting a predetermined weight W, specifically, a clamping flange (not shown in the drawing) is disposed at the bottom end of the mounting vertical rod 52, a locking nut 521 in threaded connection is disposed on the mounting vertical rod 52, the mounting vertical rod 52 passes through the cross chute 51a from below the load board 51, the clamping flange and the locking nut 521 are detachably disposed on the load board 51, the load vehicle on which the weight W is mounted runs on the load board 40, loading of the dynamic load on the predetermined bridge truss B is achieved, and when the dynamic load is required to be simulated, the mounting vertical rod 52 is dismounted on the load board 51, so that the weight W is mounted on different positions of the load board 51, and further the simulation of the dynamic load is achieved.
As shown in fig. 7, the traveling driving assembly 60 is configured to drive the load cart 50 to move along the traveling direction D, and includes an assembly housing 61, a screw speed reduction motor 62, and a linkage screw 63.
Specifically, the assembly housing 61 is provided on the driving support subframe 13, and the screw reduction motor 62 is provided inside the assembly housing 61, the assembly housing 61 shown in fig. 1 and 2 being not shown in fig. 7 for convenience of display.
The screw speed reducing motor 62 is provided at the top of the positioning sub-frame 11 by driving the supporting sub-frame 13, and an output shaft of the screw speed reducing motor 62 extends in the traveling direction D and is higher than the carrier plate 40.
One end of the linkage screw 63 is rotationally coupled with the output end of the screw speed reducing motor 62, and the other end of the linkage screw is in threaded connection with the load vehicle 50, and when the screw speed reducing motor 62 drives the linkage screw 63 to rotate, the load vehicle 50 moves along the vehicle running direction D.
The distance measuring assembly 70 includes a sensor housing 71 and a distance measuring sensor (not shown in the drawings).
As shown in fig. 8, specifically, the sensor housing 71 is horizontally disposed, and a surface is formed with a fixing through hole (not shown in the drawing) and a laser light exit hole 711.
Specifically, the pair of fixing through holes are respectively provided in the sensor housing 71, and the sensor housing 71 is detachably provided on the bottom frame of the base frame 10 through the fixing through holes, so that the sensor housing 71 is movably provided at the bottom of the base frame in the vehicle traveling direction D.
Specifically, the laser light emitting holes 711 correspond to the light blocking bars 20 in the vertical direction.
The ranging sensor is movably arranged at the bottom of the base frame 10 along the vehicle traveling direction D, and the transmitting end of the ranging sensor vertically faces the truss bearing sub-frame 12, when the predetermined bridge truss B is arranged on the truss bearing sub-frame 12, the light blocking strip 20 corresponds to the transmitting end of the ranging sensor along the vertical direction, specifically, the ranging sensor is a laser ranging sensor, the transmitting end of the ranging sensor emits a laser beam through the laser emitting hole 711, the laser beam vertically irradiates the light blocking strip 20 along the laser emitting path L, and the laser ranging is realized through the reflection of the light blocking strip 20, namely, the detection of the deflection of the predetermined bridge truss B is realized.
< example two >
In the second embodiment, the same reference numerals are given to constituent elements having the same configuration as in the first embodiment, and the corresponding description is omitted.
The specific difference between the first embodiment and the second embodiment is that:
as shown in fig. 9, the deflection performance testing apparatus 100 of the bridge truss model further includes a wire fixing frame 80 and a plurality of suspension wires 90.
The line fixing frame 80 is a rectangular frame vertically disposed on the truss carrying sub-frame 12, and the carrying floor 40 and the predetermined bridge truss B pass through the line fixing frame 80.
One end of the suspension cord 90 is fixed to the cord fixing frame 80 and the other end is fixed to the side of the truss-carrying sub-frame 12, thereby realizing a predetermined bridge truss B simulating a suspension-locked cable-stayed bridge.
The above embodiments are preferred embodiments of the present utility model and are not intended to limit the scope of the present utility model, and various modifications or variations which may be made by those skilled in the art without the inventive effort within the scope of the appended claims remain within the scope of this patent.
Claims (10)
1. A deflection performance detection device of a bridge truss model, configured to detect deflection of a predetermined bridge truss when carrying a dynamic load, comprising:
the base frame is horizontally arranged and comprises a pair of positioning sub-frames and truss bearing sub-frames positioned between the pair of positioning sub-frames, the pair of positioning sub-frames vertically protrude upwards and the tops of the pair of positioning sub-frames are positioned on the same horizontal plane, the connecting line direction of the pair of positioning sub-frames is taken as the vehicle direction,
the two ends of the bearing plate are respectively arranged at the top parts of the two positioning sub-frames, and the bearing plate and the truss bearing sub-frames are correspondingly arranged in the vertical direction,
the load vehicle is arranged on the bearing plate;
the traveling driving assembly is used for driving the load vehicle to move along the traveling direction,
the ranging sensor is movably arranged at the bottom of the base frame along the vehicle running direction, the transmitting end of the ranging sensor vertically faces the truss bearing sub-frame,
the truss bearing sub-frame is movably arranged in the vertical direction, the preset bridge truss is arranged on the truss bearing sub-frame, and the bearing plate is paved on the top of the preset bridge truss.
2. The deflection performance testing device of a bridge truss model of claim 1, further comprising:
and the light blocking strip is arranged on the lower surface of the preset bridge truss along the vehicle running direction, and corresponds to the transmitting end of the ranging sensor along the vertical direction when the preset bridge truss is arranged on the truss bearing sub-frame.
3. The deflection performance testing device of a bridge truss model according to claim 1, wherein:
the positioning sub-frame is a rectangular frame, and scale marks along the vertical direction are arranged on the positioning sub-frame.
4. A deflection performance testing device for a bridge truss model according to claim 3, further comprising:
a top platform plate, a bottom platform plate and a top platform plate,
the top of the positioning sub-frame is a horizontal frame surface, and the top platform plate is correspondingly paved at the top of the positioning sub-frame.
5. A deflection performance testing device for a bridge truss model according to claim 3, wherein:
the truss bearing sub-frames are formed by assembling a plurality of linear sectional materials through sectional material connecting pieces, the truss bearing sub-frames are multiple in number, and the truss bearing sub-frames are different in extension length.
6. The deflection performance testing device of a bridge truss model according to claim 1, wherein:
wherein the travelling crane driving assembly comprises a screw rod speed reducing motor and a linkage screw rod,
the screw rod gear motor is arranged at the top of the positioning subframe, an output shaft of the screw rod gear motor extends along the vehicle running direction and is higher than the bearing plate, one end of the linkage screw rod is rotationally coupled with the output end of the screw rod gear motor, and the other end of the linkage screw rod is in threaded connection with the load vehicle.
7. The deflection performance testing device of a bridge truss model according to claim 1, wherein:
the loading vehicle comprises a loading plate and a mounting vertical rod, wherein the mounting vertical rod is movably arranged on the loading plate and is used for mounting a preset weight.
8. The deflection performance testing device of a bridge truss model of claim 7, wherein:
wherein the load board is provided with a cross chute, one section of the cross chute extends along the vehicle running direction, the other section is vertical to the vehicle running direction, the bottom end of the mounting vertical rod is provided with a clamping flange, the mounting vertical rod is provided with a locking nut in threaded connection,
the mounting vertical rod is detachably arranged on the load plate through the clamping flange and the locking nut.
9. The deflection performance testing device of a bridge truss model according to claim 1, wherein:
wherein two limit convex edges which are continuously extended along the vehicle running direction are respectively formed near the two sides of the bearing plate,
the movement of the load car is limited between the two limiting flanges.
10. The deflection performance testing device of a bridge truss model of claim 1, further comprising:
a thread fixing frame and a plurality of suspension threads,
the clue fixing frame is a rectangular frame and is vertically arranged on the truss bearing sub-frame, the bearing plate and the preset bridge truss both penetrate through the clue fixing frame,
one end of the suspension thread is fixed on the thread fixing frame, and the other end is fixed on the side part of the truss bearing sub-frame.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320090231.0U CN219121666U (en) | 2023-01-31 | 2023-01-31 | Deflection performance detection device of bridge truss model |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320090231.0U CN219121666U (en) | 2023-01-31 | 2023-01-31 | Deflection performance detection device of bridge truss model |
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| CN219121666U true CN219121666U (en) | 2023-06-02 |
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| CN202320090231.0U Active CN219121666U (en) | 2023-01-31 | 2023-01-31 | Deflection performance detection device of bridge truss model |
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2023
- 2023-01-31 CN CN202320090231.0U patent/CN219121666U/en active Active
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