CN216284339U - Loading device for bridge load test - Google Patents
Loading device for bridge load test Download PDFInfo
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- CN216284339U CN216284339U CN202123103730.9U CN202123103730U CN216284339U CN 216284339 U CN216284339 U CN 216284339U CN 202123103730 U CN202123103730 U CN 202123103730U CN 216284339 U CN216284339 U CN 216284339U
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Abstract
The utility model discloses a loading device for a bridge load test, which comprises a test bed, wherein the top of the test bed is fixedly connected with a rectangular frame through a support column, the rectangular frame is connected with an installation plate through a linear driving mechanism, the top of the installation plate is fixedly connected with an electric cylinder, the bottom push rod end of the electric cylinder is fixedly connected with the installation plate through a transition frame, and an iron pressurizing plate is arranged below the installation plate; when the device is used, the electric cylinder drives the iron pressurizing plate to move downwards, so that the iron pressurizing plate is attached to the surface of the bridge model, the bottom end of the threaded pipe is close to the top of the spring, the second motor is started, the threaded pipe is driven to compress the spring downwards by matching of the threaded pipe and the screw rod, the iron pressurizing plate can be driven by the weighing sensor to pressurize the bridge model, the weighing sensor is used for obtaining the downward pressure on the bridge model, and the accuracy of experimental data can be effectively improved.
Description
Technical Field
The utility model relates to a test device, in particular to a loading device for a bridge load test.
Background
The bridge generally refers to a structure which is erected on rivers, lakes and seas and enables vehicles, pedestrians and the like to smoothly pass through. In order to adapt to the modern high-speed developed traffic industry, bridges are also extended to be constructed to span mountain stream, unfavorable geology or meet other traffic needs, so that the buildings are convenient to pass.
At present, at the in-process of carrying out bridge model test, hang the balancing weight on the bridge usually to detect bridge load, because of the balancing weight can appear the swing at the in-process that hangs, easily lead to the great deviation of test data appearance, and the loading capacity of bridge when this kind of mode can't simulate the vehicle and travel remains to be improved.
SUMMERY OF THE UTILITY MODEL
The utility model aims to provide a loading device for a bridge load test, which aims to solve the problems in the background technology.
In order to achieve the purpose, the utility model provides the following technical scheme:
the utility model provides a loading device for bridge load test, includes the test bench, pillar fixedly connected with rectangular frame is passed through at the top of test bench, rectangular frame is last to be connected with the flat board through sharp actuating mechanism, electronic jar of dull and stereotyped top fixedly connected with, the bottom push rod end of electronic jar is through transition frame fixedly connected with mounting panel, the below of mounting panel is provided with the iron increased pressure board, iron increased pressure board and mounting panel sliding connection, the top fixedly connected with weighing sensor of iron increased pressure board, weighing sensor's top is provided with loading mechanism, the below of iron increased pressure board is provided with a plurality of gyro wheels, the seat is inhaled to fixedly connected with magnetism on the gyro wheel, the seat is inhaled with the bottom magnetism of iron increased pressure board to be connected to magnetism.
As a further scheme of the utility model: the linear driving mechanism comprises two lead screws which are symmetrically distributed in the rectangular frame, the two lead screws are connected with the inner wall of the rectangular frame in a rotating mode, nuts and two are sleeved on the outer wall of each lead screw in a matching mode, the lead screws are connected in a transmission mode, the first motor is fixedly connected to the outer wall of the rectangular frame, the output shaft of the first motor penetrates through the outer wall of the rectangular frame and then is connected with one lead screw in a fixed mode, two movable grooves are symmetrically arranged on the two sides of the inner wall of the rectangular frame in a penetrating mode, and the two ends of the flat plate are fixedly connected with the nuts corresponding to the two ends of the flat plate after extending into the rectangular frame through the corresponding movable grooves.
As a further scheme of the utility model: the outer wall of the two lead screws is fixedly sleeved with belt wheels, and the two belt wheels are connected through a belt in a transmission mode.
As a further scheme of the utility model: the loading mechanism comprises a second motor, the second motor is fixedly connected with the top of the mounting plate, an output shaft of the second motor is fixedly connected with a screw rod, a threaded pipe is sleeved on the outer wall of the screw rod in a matching mode, a sleeve is fixedly connected with the top of the weighing sensor, the bottom end of the threaded pipe is located in the sleeve, the threaded pipe is connected with the sleeve in a sliding mode in the vertical direction, and a spring is arranged in the sleeve.
As a further scheme of the utility model: the outer wall of the threaded pipe is symmetrically and fixedly connected with two guide strips, guide grooves are formed in the corresponding positions of the inner wall of the sleeve and the guide strips, and the guide strips are located in the corresponding guide grooves.
As a still further scheme of the utility model: the iron pressurizing plate is characterized in that a plurality of guide rods are fixedly connected to the top of the iron pressurizing plate, a limiting block is fixedly connected to the top end of each guide rod after the top end of each guide rod penetrates through the bottom of the mounting plate, and the guide rods are connected with the mounting plates in a sliding mode.
Compared with the prior art, the utility model has the beneficial effects that:
1. when the device is used, the electric cylinder drives the iron pressurizing plate to move downwards, so that the iron pressurizing plate is attached to the surface of the bridge model, the bottom end of the threaded pipe is close to the top of the spring, the second motor is started, the threaded pipe is driven to compress the spring downwards by matching of the threaded pipe and the screw rod, the iron pressurizing plate can be driven by the weighing sensor to pressurize the bridge model, the weighing sensor is used for obtaining the downward pressure on the bridge model, and the accuracy of experimental data can be effectively improved.
2. Before the pressurization test is carried out, the required number of rollers are adsorbed at the bottom of the iron pressurization plate through the magnetic suction seats, the surface of the bridge model is pressurized through the rollers, the first motor is started, the two screw rods are driven to rotate simultaneously through the transmission connection of the two belt wheels, then the mounting plate is driven to move horizontally on the rectangular frame through the matching of the screw rods and the nuts, the rollers can roll and advance on the surface of the bridge model to simulate the load state of the bridge when a vehicle runs, and the use effect is good.
Drawings
Fig. 1 is a schematic structural diagram of a loading device for a bridge load test.
Fig. 2 is a schematic structural diagram of a linear driving mechanism in a loading device for a bridge load test.
Fig. 3 is a schematic structural diagram of a pressurizing mechanism in a loading device for a bridge load test.
Fig. 4 is a schematic structural diagram of a guide groove in a loading device for a bridge load test.
The device comprises a test bed 1, a rectangular frame 2, a first motor 3, a screw rod 4, a belt wheel 5, a nut 6, a movable groove 7, a flat plate 8, an electric cylinder 9, a transition frame 10, an installation plate 11, a second motor 12, a screw rod 13, a threaded pipe 14, a guide strip 15, a sleeve 16, a guide groove 17, a spring 18, a weighing sensor 19, an iron pressurizing plate 20, a guide rod 21, a limiting block 22, a roller 23 and a magnetic suction seat 24.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Referring to fig. 1 to 4, in an embodiment of the present invention, a loading device for a bridge load test includes a test bed 1, the top of the test bed 1 is fixedly connected with a rectangular frame 2 through a support, the rectangular frame 2 is connected with a flat plate 8 through a linear driving mechanism, the top of the flat plate 8 is fixedly connected with an electric cylinder 9, the bottom push rod end of the electric cylinder 9 is fixedly connected with a mounting plate 11 through a transition frame 10, an iron pressurizing plate 20 is arranged below the mounting plate 11, the iron pressurizing plate 20 is connected with the mounting plate 11 in a sliding way, the top of the iron pressurizing plate 20 is fixedly connected with a weighing sensor 19, a pressurizing mechanism is arranged above the weighing sensor 19, a plurality of rollers 23 are arranged below the iron pressurizing plate 20, a magnetic attraction seat 24 is fixedly connected to each roller 23, and the magnetic attraction seat 24 is magnetically attracted to the bottom of the iron pressurizing plate 20.
The linear driving mechanism comprises two lead screws 4 which are symmetrically distributed in a rectangular frame 2, the two lead screws 4 are rotationally connected with the inner wall of the rectangular frame 2, nuts 6 are sleeved on the outer walls of the lead screws 4 in a matching mode, the two lead screws 4 are in transmission connection, the outer wall of the rectangular frame 2 is fixedly connected with a first motor 3, an output shaft of the first motor 3 penetrates through the outer wall of the rectangular frame 2 and then is fixedly connected with one end of one lead screw 4, two movable grooves 7 are symmetrically arranged on two sides of the inner wall of the rectangular frame 2 in a penetrating mode, and two ends of a flat plate 8 are fixedly connected with the corresponding nuts 6 after extending into the rectangular frame 2 through the corresponding movable grooves 7; the outer wall of the two screw rods 4 is fixedly sleeved with belt wheels 5, and the two belt wheels 5 are connected through belt transmission.
The first motor 3 is started, the two screw rods 4 can be driven to rotate simultaneously by the transmission connection of the two belt wheels 5, and then the flat plate 8 is driven to horizontally move on the rectangular frame 2 by the matching of the screw rods 4 and the nuts 6.
The pressurization mechanism comprises a second motor 12, the top of the second motor 12 is fixedly connected with the mounting plate 11, an output shaft of the second motor 12 is fixedly connected with a screw rod 13, a threaded pipe 14 is sleeved on the outer wall of the screw rod 13 in a matched mode, a sleeve 16 is fixedly connected with the top of the weighing sensor 19, the bottom end of the threaded pipe 14 is located in the sleeve 16, the threaded pipe 14 is connected with the sleeve 16 in a sliding mode in the vertical direction, and a spring 18 is arranged in the sleeve 16.
When needing to pressurize, move down through electronic jar 9 drive iron increased pressure board 20, make iron increased pressure board 20 or gyro wheel 23 laminate on bridge model surface, and make the bottom of screwed pipe 14 and the top of spring 18 be close to the back, start second motor 12, utilize the cooperation drive screwed pipe 14 of screwed pipe 14 and screw rod 13 to compress spring 18 downwards, then utilize the shrink deformation of spring 18 to absorb the amount of movement of screwed pipe 14, and utilize the elasticity of spring 18 after the compression to pressurize bridge model through weighing sensor 19 drive iron increased pressure board 20, can acquire the pushing down force that bridge model received through weighing sensor 19.
The outer wall of the threaded pipe 14 is symmetrically and fixedly connected with two guide strips 15, guide grooves 17 are formed in the corresponding positions of the inner wall of the sleeve 16 and the guide strips 15, and the guide strips 15 are located in the corresponding guide grooves 17.
The utility model can improve the stability of the up-and-down movement of the threaded pipe 14 in the sleeve 16 and prevent the threaded pipe 14 from rotating along with the screw 13 by matching the guide strip 15 with the guide groove 17.
The top of iron increased pressure board 20 is fixedly connected with a plurality of guide arms 21, fixedly connected with stopper 22 behind the bottom that mounting panel 11 was run through to the top of guide arm 21, guide arm 21 and mounting panel 11 sliding connection.
The stability of the iron pressurizing plate 20 moving up and down can be improved by the cooperation of the guide rod 21 and the mounting plate 11.
The working principle of the utility model is as follows:
when the device is used, a bridge model is placed under the iron pressurizing plate 20 on the test bed 1, then the iron pressurizing plate 20 is driven to move downwards through the electric cylinder 9, the iron pressurizing plate 20 is attached to the surface of the bridge model, the bottom end of the threaded pipe 14 is close to the top of the spring 18, the second motor 12 is started, the threaded pipe 14 is driven to compress the spring 18 downwards through the matching of the threaded pipe 14 and the screw 13, then the moving amount of the threaded pipe 14 is absorbed through the shrinkage deformation of the spring 18, the iron pressurizing plate 20 is driven to pressurize the bridge model through the weighing sensor 19 through the elastic force of the compressed spring 18, the downward pressure of the bridge model can be obtained through the weighing sensor 19, the situation that a balancing weight swings in a traditional experiment does not exist, and the accuracy of experimental data can be effectively improved.
Before a pressurization test is carried out, a required number of rollers 23 are adsorbed at the bottom of an iron pressurization plate 20 through magnetic adsorption seats 24, after the surface of a bridge model is pressurized through the rollers 23, a first motor 3 is started, two screw rods 4 are driven to rotate simultaneously through transmission connection of two belt wheels 5, and then a flat plate 8 is driven to move horizontally on a rectangular frame 2 through cooperation of the screw rods 4 and nuts 6, so that the rollers 23 can roll on the surface of the bridge model to move forward to simulate the load state of the bridge when a vehicle runs, and the use effect is good.
Although the present invention has been described in detail with reference to the foregoing embodiments, it will be apparent to those skilled in the art that various changes in the embodiments and/or modifications of the utility model can be made, and equivalents and modifications of some features of the utility model can be made without departing from the spirit and scope of the utility model.
Claims (6)
1. The utility model provides a loading device for bridge load test which characterized in that: comprises a test bed (1), the top of the test bed (1) is connected with a rectangular frame (2) through a support fixedly connected with, the rectangular frame (2) is connected with a flat plate (8) through a linear driving mechanism, the top of the flat plate (8) is fixedly connected with an electric cylinder (9), the bottom push rod end of the electric cylinder (9) is fixedly connected with a mounting plate (11) through a transition frame (10), an iron pressurizing plate (20) is arranged below the mounting plate (11), the iron pressurizing plate (20) is connected with the mounting plate (11) in a sliding way, a weighing sensor (19) is fixedly connected with the top of the iron pressurizing plate (20), a pressurizing mechanism is arranged above the weighing sensor (19), a plurality of rollers (23) are arranged below the iron pressurizing plate (20), and a magnetic suction seat (24) is fixedly connected with the rollers (23), the magnetic suction seat (24) is connected with the bottom of the iron pressurizing plate (20) in a magnetic suction way.
2. The loading device for bridge load test of claim 1, wherein: linear drive mechanism includes two lead screws (4) of symmetric distribution in rectangular frame (2), two lead screw (4) all rotate with the inner wall of rectangular frame (2) and are connected, nut (6) have been cup jointed in the outer wall cooperation of lead screw (4), two lead screw (4) transmission is connected, the outer wall fixedly connected with first motor (3) of rectangular frame (2), the output shaft of first motor (3) run through behind the outer wall of rectangular frame (2) with one the one end fixed connection of lead screw (4), the inner wall both sides symmetry of rectangular frame (2) runs through and is provided with two movable groove (7), the both ends of dull and stereotyped (8) are stretched into behind rectangular frame (2) and nut (6) fixed connection that corresponds by movable groove (7) that correspond.
3. The loading device for bridge load test of claim 2, wherein: the outer wall of the two screw rods (4) is fixedly sleeved with belt wheels (5), and the two belt wheels (5) are connected through a belt in a transmission mode.
4. The loading device for bridge load test of claim 1, wherein: the loading system comprises a second motor (12), the top of the second motor (12) is fixedly connected with a mounting plate (11), an output shaft of the second motor (12) is fixedly connected with a screw rod (13), a threaded pipe (14) is sleeved on the outer wall of the screw rod (13) in a matching mode, a sleeve (16) is fixedly connected with the top of a weighing sensor (19), the bottom end of the threaded pipe (14) is located in the sleeve (16), the threaded pipe (14) is connected with the sleeve (16) in a sliding mode in the vertical direction, and a spring (18) is arranged in the sleeve (16).
5. The loading device for bridge load test of claim 4, wherein: the outer wall symmetry fixedly connected with two gibs (15) of screwed pipe (14), guide way (17) have been seted up with the department that corresponds of gib (15) to the inner wall of sleeve pipe (16), gib (15) are located corresponding guide way (17).
6. The loading device for bridge load test of claim 1, wherein: the iron pressurizing plate is characterized in that a plurality of guide rods (21) are fixedly connected to the top of the iron pressurizing plate (20), a limiting block (22) is fixedly connected to the top end of each guide rod (21) after penetrating through the bottom of the mounting plate (11), and the guide rods (21) are connected with the mounting plate (11) in a sliding mode.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202123103730.9U CN216284339U (en) | 2021-12-11 | 2021-12-11 | Loading device for bridge load test |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202123103730.9U CN216284339U (en) | 2021-12-11 | 2021-12-11 | Loading device for bridge load test |
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| Publication Number | Publication Date |
|---|---|
| CN216284339U true CN216284339U (en) | 2022-04-12 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202123103730.9U Active CN216284339U (en) | 2021-12-11 | 2021-12-11 | Loading device for bridge load test |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114758575A (en) * | 2022-04-24 | 2022-07-15 | 刘富海 | Bridge design model with load simulation structure |
| CN116026541A (en) * | 2023-03-29 | 2023-04-28 | 山东省滨州公路工程有限公司 | Bridge static load experiment simulation pressurizing equipment |
-
2021
- 2021-12-11 CN CN202123103730.9U patent/CN216284339U/en active Active
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114758575A (en) * | 2022-04-24 | 2022-07-15 | 刘富海 | Bridge design model with load simulation structure |
| CN114758575B (en) * | 2022-04-24 | 2023-06-16 | 刘富海 | Bridge design model with load simulation structure |
| CN116026541A (en) * | 2023-03-29 | 2023-04-28 | 山东省滨州公路工程有限公司 | Bridge static load experiment simulation pressurizing equipment |
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