Drop hammer type deflection detection vehicle
By designing a hammer-type deflection detection vehicle, using dynamic loads and computer data acquisition, the problem of the reduction in accuracy of the Beckman beam deflection detection method in the traffic environment is solved, and faster, flexible and accurate road detection is achieved.
Patent Information
- Application Number
- CN202420248234.7
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-02-01
- Publication Date
- 2024-12-17
- Estimated Expiration
- 2034-02-01
AI Technical Summary
The existing Beckman beam deflection detection method is prone to decrease detection accuracy under the influence of traffic environment factors, resulting in inaccurate results of deflection detection.
A hammer-type deflection detection vehicle was designed, using fixed plates, columns, hammer lifting cylinders, connecting plates, rotating parts, detection components and other structures. Dynamic load is applied on the bearing plate by the hammer, combined with a computer and a controller. Data acquisition and analysis enhances detection flexibility and accuracy.
It improves detection speed and flexibility, can conduct accurate road inspections in harsh traffic environments, record data in real time, ensure the authenticity and timeliness of the detection results, and reduce errors caused by rust.
Smart Images
Figure CN222183002U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of deflection detection, in particular to a drop-hammer type deflection detection vehicle. Background Art
[0002] The Falling Weight Deflectometer (FWD) consists of a load generating device, an impact force and deflection detection device, a computer control and data acquisition computing device, and a motorized device. It is mainly used to evaluate the toughness, stiffness, and deformation characteristics of materials, as well as the stability and bearing capacity of structures. It has a wide range of applications in civil engineering, architectural design, materials science, and structural engineering. By conducting bending and settlement tests on different materials or structures, it can help engineers and researchers understand the performance of materials and provide valuable data for design and optimization.
[0003] Previously, the Beckman beam deflection detection method was usually used to measure the modulus of the pavement structure layer to evaluate the bearing capacity of the pavement. The detection accuracy of the existing Beckman beam deflection detection method is easily affected by environmental factors. The Beckman beam deflection detection requires the installation of sensors on the bridge, but the sensors are easily affected by traffic environmental factors, which leads to a decrease in detection accuracy. Although the Beckman beam deflection detection is a common structural health monitoring method, it also has some limitations and defects. Utility Model Content
[0004] In order to remedy the above deficiencies, the utility model provides a drop-hammer deflection detection vehicle, which aims to improve the problem that deflection detection is easily affected by traffic environment factors, thereby causing a decrease in detection accuracy.
[0005] In order to achieve the above-mentioned purpose, the utility model adopts the following technical scheme: a drop-hammer type deflection detection vehicle, comprising a fixed plate, a plurality of bolts are equidistantly threadedly connected on the left and right sides of the top wall of the fixed plate, the bottom ends of the plurality of bolts respectively penetrate the inner wall of the fixed plate and are threadedly connected to columns, the bottom walls of the two columns are fixedly connected to the bottom plate, the middle part of the top wall of the bottom plate is fixedly connected to a fixed hammer, the inner top walls of the two columns are fixedly connected to a hammer cylinder, the output ends of the two hammer cylinders are connected to a connecting plate through a pin, two fixed columns are arranged on the front and rear sides of the top wall of the connecting plate, the interiors of the plurality of fixed columns are threadedly connected to threaded connecting columns, the tops of the plurality of threaded connecting columns are fixedly connected to rotating parts, and a detection component is arranged in the middle part of the top wall of the bottom plate.
[0006] Through the above technical scheme: multiple counterweights are installed on the outer walls of multiple fixed columns, and the rotating parts are rotated to fix the counterweights. By starting two hammer lifting cylinders, the connecting plate is lifted. Under the gravity of the fixed hammer and multiple counterweights, the connection between the hammer lifting cylinder and the connecting plate is released by the pin, so that the hammer dropping work is completed through the connecting plate.
[0007] As a further description of the above technical solution:
[0008] The detection component includes a supporting plate, the outer side of the supporting plate is installed on the inner wall of the base plate, a computer is installed at the front end of the right side of the top wall of the fixing plate, the outer walls of the plurality of fixing columns are each provided with a plurality of counterweights, and a controller is installed at the rear end of the right side of the top wall of the base plate.
[0009] Through the above technical solution: by dropping the hammer on the top of the load-bearing plate, the computer can measure the dynamic deflection and deflection basin generated under the dynamic load, so as to carry out the test work.
[0010] As a further description of the above technical solution:
[0011] The controller is electrically connected to the hammer cylinder and the computer respectively.
[0012] Through the above technical solution: the controller can achieve the purpose of controlling the device.
[0013] As a further description of the above technical solution:
[0014] A protective shell is arranged on the right side of the controller, and the top of the protective shell is rotatably connected to the top wall of the controller through a hinge.
[0015] Through the above technical solution: the protective shell can protect the controller panel and prevent accidental touches.
[0016] As a further description of the above technical solution:
[0017] The outer sides of the plurality of rotating parts are all provided with rubber shells.
[0018] Through the above technical solution, the static friction of the rotating part is increased and the hand slipping is reduced.
[0019] As a further description of the above technical solution:
[0020] Universal wheels are installed at the four corners of the bottom wall of the bottom plate.
[0021] Through the above technical solution: multiple universal wheels make it easy for the device to change direction and move.
[0022] As a further description of the above technical solution:
[0023] The inner dimension of the inner wall of the fixing plate is larger than the outer dimension of the fixing hammer.
[0024] Through the above technical solution: the fixed hammer can pass through the inner wall of the fixed plate normally, thereby completing the drop hammer deflection detection work.
[0025] As a further description of the above technical solution:
[0026] The surface of the bearing plate is provided with anti-rust paint.
[0027] Through the above technical solution, the bearing plate can obtain a better anti-rust effect and reduce the detection error caused by rust.
[0028] The utility model has the following beneficial effects:
[0029] In the utility model, in the detection of municipal roads, the drop-weight deflectometer has a faster detection speed and more flexible application scenarios. Even if the traffic environment is very bad, the actual application will not be difficult. Secondly, the results of road detection can be recorded in real time in the relevant software system, so that the road detection data can be more real and accurate, and have a certain timeliness and reproducibility. Finally, the drop-weight deflectometer can complete all detection work in the test vehicle operating room. BRIEF DESCRIPTION OF THE DRAWINGS
[0030] Figure 1 A three-dimensional diagram of a drop-hammer deflection detection vehicle proposed by the utility model;
[0031] Figure 2 This is a top view of a drop-hammer deflection detection vehicle proposed by the utility model;
[0032] Figure 3 The utility model provides a schematic diagram of the connecting plate structure of a drop-hammer deflection detection vehicle.
[0033] Legend:
[0034] 1. Fixed plate; 2. Bolts; 3. Column; 4. Base plate; 5. Hammer cylinder; 6. Connecting plate; 7. Fixed column; 8. Threaded connecting column; 9. Rotating part; 10. Rubber shell; 11. Fixed hammer; 12. Load-bearing plate; 13. Counterweight; 14. Computer; 15. Controller; 16. Protective shell; 17. Universal wheel. DETAILED DESCRIPTION
[0035] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.
[0036] Reference Figure 1 , Figure 2 and Figure 3 The utility model provides an embodiment: a drop-hammer deflection detection vehicle, comprising a fixing plate 1, a plurality of bolts 2 are equidistantly threadedly connected to the left and right sides of the top wall of the fixing plate 1, the bottom ends of the plurality of bolts 2 respectively penetrate the inner wall of the fixing plate 1 and are threadedly connected to columns 3, the bottom walls of the two columns 3 are fixedly connected to the bottom plate 4, the middle part of the top wall of the bottom plate 4 is fixedly connected to a fixing hammer 11, the inner top walls of the two columns 3 are fixedly connected to a lifting hammer cylinder 5, the output ends of the two lifting hammer cylinders 5 are connected to a connecting plate 6 through a pin, two fixing columns 7 are arranged on the front and rear sides of the top wall of the connecting plate 6, and the interiors of the plurality of fixing columns 7 are all threaded The threaded connection column 8 is connected with the threaded connection column 8, and the tops of the multiple threaded connection columns 8 are fixedly connected with the rotating parts 9. A detection component is arranged in the middle of the top wall of the bottom plate 4; the detection component includes a bearing plate 12, the outer side of the bearing plate 12 is installed on the inner wall of the bottom plate 4, a computer 14 is installed at the front end of the right side of the top wall of the fixed plate 1, and the outer walls of the multiple fixed columns 7 are provided with multiple counterweights 13, and a controller 15 is installed at the rear end of the right side of the top wall of the bottom plate 4; the controller 15 is electrically connected to the hammer cylinder 5 and the computer 14 respectively; universal wheels 17 are installed at the four corners of the bottom wall of the bottom plate 4; the surface of the bearing plate 12 is provided with anti-rust paint;
[0037] Specifically, by installing multiple counterweights 13 on the outer walls of multiple fixed columns 7 and then rotating the rotating member 9, the counterweights 13 can be fixed. By starting the two hammer cylinders 5, the connecting plate 6 is lifted. Under the gravity of the fixed hammer 11 and the multiple counterweights 13, the connection between the hammer cylinder 5 and the connecting plate 6 is released by the latch, so that the connecting plate 6 falls on the top of the supporting plate 12, so that the computer 14 can measure the dynamic deflection and deflection basin generated under the action of dynamic load, so as to carry out testing. The multiple universal wheels 17 can facilitate the change of direction and movement of the device, thereby enhancing the flexibility of the device, so that the supporting plate 12 obtains a better anti-rust effect and reduces the detection error caused by rust.
[0038] Reference Figure 2 and Figure 3 A protective shell 16 is provided on the right side of the controller 15, and the top of the protective shell 16 is rotatably connected to the top wall of the controller 15 through a hinge; a rubber shell 10 is installed on the outer side of each of the plurality of rotating members 9;
[0039] Specifically, the protective shell 16 is used to protect the panel of the controller 15 and prevent accidental touches. By installing multiple rubber shells 10, the friction between the rotating part 9 and the hand is increased when the rotating part 9 is in use, thereby reducing the possibility of hand slippage.
[0040] Reference Figure 2 , the inner dimension of the inner wall of the fixing plate 1 is larger than the outer dimension of the fixing hammer 11;
[0041] Specifically, the inner dimension of the inner wall of the fixing plate 1 is larger than the outer dimension of the fixing hammer 11, so that the fixing hammer 11 can normally pass through the inner wall of the fixing plate 1, thereby completing the drop hammer deflection detection.
[0042] Working principle: When the test begins, the controller 15 is started to lift a fixed hammer 11 of a certain mass and a plurality of counterweights 13 to a certain height through the hammer cylinder 5, and the hammer cylinder 5 is released to allow it to fall freely, so that the impact force acts on the bearing plate 12 and is then transmitted to the road surface. In this way, when a pulse load is applied to the road surface, the instantaneous deformation generated can be received by sensors distributed at different distances, and the real and specific deformation of the road can be received, and the data can be recorded in time through the computer 14. According to the detected data, the dynamic deflection value and deflection basin of the road under the dynamic load can be determined, based on which the elastic modulus of the road surface structure can be inversely calculated to scientifically evaluate the road bearing capacity performance.
[0043] Finally, it should be noted that the above is only a preferred embodiment of the present invention and is not intended to limit the present invention. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art can still modify the technical solutions described in the aforementioned embodiments or make equivalent substitutions for some of the technical features therein. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.
Claims
1. A drop-weight deflection detection vehicle, comprising a fixing plate (1), characterized in that: A plurality of bolts (2) are equidistantly threadedly connected to the left and right sides of the top wall of the fixing plate (1); the bottom ends of the plurality of bolts (2) respectively penetrate the inner wall of the fixing plate (1) and are threadedly connected to the columns (3); the bottom walls of the two columns (3) are fixedly connected to the bottom plate (4); a fixed hammer (11) is fixedly connected to the middle of the top wall of the bottom plate (4); the inner top walls of the two columns (3) are fixedly connected to the hammer oil cylinder (5); the output ends of the two hammer oil cylinders (5) are connected to the connecting plate (6) via a latch; two fixing columns (7) are arranged on the front and rear sides of the top wall of the connecting plate (6); the interiors of the plurality of fixing columns (7) are threadedly connected to the threaded connecting columns (8); the tops of the plurality of threaded connecting columns (8) are fixedly connected to the rotating parts (9); and a detection component is arranged in the middle of the top wall of the bottom plate (4).
2. A drop weight deflection detection vehicle according to claim 1, characterized in that: The detection assembly comprises a bearing plate (12), the outer side of the bearing plate (12) is mounted on the inner wall of the bottom plate (4), a computer (14) is mounted on the front right side of the top wall of the fixing plate (1), the outer walls of the plurality of fixing columns (7) are each provided with a plurality of counterweights (13), and a controller (15) is mounted on the rear right side of the top wall of the bottom plate (4).
3. A drop weight deflection detection vehicle according to claim 2, characterized in that: The controller (15) is electrically connected to the hammer cylinder (5) and the computer (14) respectively.
4. A drop weight deflection detection vehicle according to claim 2, characterized in that: A protective shell (16) is provided on the right side of the controller (15), and the top of the protective shell (16) is rotatably connected to the top wall of the controller (15) via a hinge.
5. The drop weight deflection detection vehicle according to claim 1, characterized in that: A rubber housing (10) is installed on the outer sides of the plurality of rotating parts (9).
6. The drop-weight deflection detection vehicle according to claim 1, characterized in that: Universal wheels (17) are installed at the four corners of the bottom wall of the bottom plate (4).
7. The drop weight deflection detection vehicle according to claim 1, characterized in that: The inner dimension of the inner wall of the fixing plate (1) is larger than the outer dimension of the fixing hammer (11).
8. The drop weight deflection detection vehicle according to claim 2, characterized in that: The surface of the bearing plate (12) is provided with anti-rust paint.