A sampling device for testing and inspection of roads and bridges
By designing a sampling device that includes a frame, studs, sliding frame, pulley motor and clamping plate, the problem of unstable core sample fixation during core sampling in the prior art is solved, and the stable transfer of core sample and the accuracy of detection are achieved.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- CHINA RAILWAY NO 5 ENGINEERING GROUP CO LTD GUIZHOU SUBSIDIARY
- Filing Date
- 2025-07-18
- Publication Date
- 2026-07-03
AI Technical Summary
In existing road coring machines, the core sample is prone to becoming loosely fixed when it is moved to the ground or designated location due to vibration or excessive speed. This may cause the core sample to fall out of the sampling tube, affecting subsequent testing.
A sampling device was designed, comprising a frame, stud, sliding frame, pulley motor, gear motor, driving pulley, driven pulley, screw, connecting plate, cross plate, and clamping plate. The stud and gear mechanism driven by the motor achieve stable descent of the core sample cylinder and clamping of the clamping plate to prevent the core sample from falling out.
This effectively prevents the core sample from falling out of the core collection tube during transfer, ensuring the stability and integrity of the core sample and guaranteeing the accuracy of subsequent testing.
Smart Images
Figure CN224456264U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of road and bridge sampling technology, and in particular to a sampling device used in road and bridge testing and inspection. Background Technology
[0002] After road construction is completed, in order to ensure the service life and safety of the road, a core sampling device is usually used to extract core samples from the road, and the obtained core samples are tested to evaluate the quality and performance of the road.
[0003] A road coring machine disclosed in Chinese Patent CN217505258U includes a base, column, top seat, stud, lifting seat, support plate, screw, and coring drill bit. A bidirectional screw is rotatably mounted on the upper surface of the base near the coring drill bit. Two symmetrical movable seats are threadedly connected to the surface of the bidirectional screw. Support frames are fixedly connected to the sides of the two movable seats that are close to each other. Support wheels are rotatably mounted on the inner surface of the support frames. This application, through the arrangement of a motor, bidirectional screw, movable seats, support frames, and support wheels, allows the motor to be started to drive the bidirectional screw to rotate, causing the movable seats to move the two support frames closer together. This allows the support wheels to roll into contact with the coring drill bit, providing stable support around the coring drill bit.
[0004] However, a comparison with existing technologies and comparative solutions reveals that when performing core sampling through roads, the core sample may not be securely fixed inside the core sample tube during the process of moving the core sample to the ground or to a designated location after the core sample is taken. This could exceed the holding force of the core tube and cause the core sample to fall out of the core tube, affecting subsequent core sample testing. Utility Model Content
[0005] The purpose of this utility model is to overcome the shortcomings of the prior art, solve the problems mentioned in the background art, and provide a sampling device for road and bridge testing.
[0006] The purpose of this utility model is achieved through the following technical solution: a sampling device for testing and inspection of roads and bridges, characterized in that: it includes a frame, a stud is rotatably connected to the top of the frame, an auxiliary sliding column is fixedly connected to one side of the frame, a wheel is provided at the bottom of the frame, a sliding frame is slidably connected to one side of the frame, and a core sampling device is provided on the sliding frame.
[0007] The core sampling device includes a pulley motor and a gear motor. The output end of the pulley motor is fixedly connected to a driving pulley, and a driven pulley is provided on one side of the driving pulley. A screw is threadedly connected to the driven pulley in the axial direction. A connecting plate is provided at one end of the screw, and a core sampling cylinder is provided at the other end of the screw. The output end of the gear motor is fixedly connected to a driving gear, and a driven gear is provided on one side of the driving gear. The driving gear and the driven gear are meshed and connected, and the driven gear is fixedly connected to the core sampling cylinder.
[0008] The core sampling cylinder is provided with a cross plate at the top, and a sliding groove is provided on the cross plate. A clamping plate is slidably connected to one side of the cross plate, and a groove adapted to the clamping plate is provided on the inner wall of the core sampling cylinder.
[0009] Preferably, a connecting rod is provided between the connecting plate and the clamping plate, and the two ends of the connecting rod are respectively hinged to the connecting plate and the clamping plate.
[0010] Preferably, the screw is rotatably connected to the cross plate.
[0011] Preferably, the driven pulley has a threaded hole in the middle, and the screw is threadedly connected to the middle of the driven pulley through the threaded hole.
[0012] Preferably, the clamping plate is slidably connected to the cross plate via the sliding groove.
[0013] Compared with the prior art, the present invention has the following beneficial effects: In the sampling device for road and bridge testing, the sliding frame drives the core cylinder to move downward to collect samples during the core sampling process. The lower part of the sliding frame fixes the core cylinder to prevent it from shaking. When the core sampling is finished, the clamping plate retracts inward to clamp the core sample, so that the core sample is fixed in the core cylinder, preventing the core sample from falling out of the core cylinder during the transfer of the core sample.
[0014] The parts of the device not covered herein are the same as or can be implemented using existing technologies. Attached Figure Description
[0015] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.
[0016] Figure 1 This is a schematic diagram of the overall structure of this utility model;
[0017] Figure 2This is a schematic diagram of the clamping device of this utility model;
[0018] Figure 3 This is a schematic diagram of the internal structure of the core-taking cylinder of this utility model;
[0019] In the diagram: 1. Frame; 2. Stud; 3. Sliding frame; 4. Auxiliary sliding column; 5. Screw; 6. Drive pulley; 7. Driven pulley; 8. Drive gear; 9. Driven gear; 10. Core tube; 11. Gear motor; 12. Wheel; 13. Pulley motor; 14. Cross plate; 15. Slide groove; 16. Clamping plate; 19. Connecting rod; 20. Groove; 21. Connecting plate. Detailed Implementation
[0020] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.
[0021] Additional aspects and advantages of this invention will be further set forth in the description which follows in conjunction with the accompanying drawings, and in part will be obvious from the description or may be learned by practice of the invention.
[0022] like Figure 1-3 As shown, a sampling device for road and bridge testing includes a frame 1, a stud 2 rotatably connected to the top of the frame 1, an auxiliary sliding column 4 fixedly connected to one side of the frame 1, a wheel 12 provided at the bottom of the frame 1, a sliding frame 3 slidably connected to one side of the frame 1, and a core sampling device provided on the sliding frame 3.
[0023] The core-taking device includes a pulley motor 13 and a gear motor 11. The output end of the pulley motor 13 is fixedly connected to a drive pulley 6. A driven pulley 7 is provided on one side of the drive pulley 6. The drive pulley 6 and the driven pulley 7 are connected by a belt. A screw 5 is threadedly connected to the driven pulley 7 along its axial direction. A connecting plate 21 is provided at one end of the screw 5. The output end of the gear motor 11 is fixedly connected to a drive gear 8. A driven gear 9 is provided on one side of the drive gear 8. The drive gear 8 and the driven gear 9 are meshed. A core-taking cylinder 10 is fixedly connected inside the driven gear 9.
[0024] The core sampling cylinder 10 is provided with a cross plate 14 at the top, and a sliding groove 15 is provided on the cross plate 14. A clamping plate 16 is slidably connected to one side of the cross plate 14. A groove 20 adapted to the clamping plate 16 is opened on the inner wall of the core sampling cylinder 10. Before the work begins, the clamping plate 16 retracts into the groove 20.
[0025] As a preferred technical solution of this utility model, a connecting rod 19 is provided between the connecting plate 21 and the clamping plate 16. One end of the connecting rod 19 is hinged to the connecting plate 21, and the other end is hinged to the clamping plate 16.
[0026] As a preferred technical solution of this utility model, the screw 5 is rotatably connected to the cross plate 14.
[0027] As a preferred technical solution of this utility model, the driven pulley 7 has a threaded hole in the middle, and the screw 5 is connected to the driven pulley 7 through the threaded hole.
[0028] As a preferred technical solution of this utility model, the clamping plate 16 is slidably connected to the cross plate 14 through the sliding groove 15.
[0029] The work process is as follows:
[0030] At the start of the sampling operation, the motor drives the stud 2 to rotate, and the rotation of the stud 2 causes the sliding frame 3 to slide downward, so that the core sampler 10 passes through the through hole in the bottom plate and contacts the road surface.
[0031] After the core sampling cylinder 10 slides down to the ground, the gear motor 11 drives the drive gear 8 to rotate. The drive gear 8 meshes and rotates, driving the driven gear 9 to rotate, thereby causing the core sampling cylinder 10 to drill downwards to extract the core sample.
[0032] After the core is removed by the core-removing cylinder 10, the pulley motor 13 is started. The rotation of the pulley motor 13 drives the drive pulley 6 to rotate, which in turn drives the driven pulley 7 to rotate. The rotation of the driven pulley 7 causes the screw 5 to move upward. When the screw 5 moves upward, it drives the connecting plate 21 to move upward. The upward movement of the connecting plate 21 drives one end of the connecting rod 19 to move upward.
[0033] When one end of the connecting rod 19 moves upward, the clamping plate 16 slides inward along the groove 15 on the cross plate 14, causing the clamping plate 16 to contract inward and tighten the sample core, thereby preventing the sample core from falling out.
[0034] After the core sample is clamped by the clamping plate 16, the stud 2 drives the sliding frame 3 to rise, and the core extraction cylinder 10 removes the core sample from the ground for transfer.
[0035] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of this utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claimed utility model.
Claims
1. A sampling device for testing and inspecting road and bridge structures, characterized in that: Includes a frame (1), the top of the frame (1) is rotatably connected to a stud (2), one side of the frame (1) is fixedly connected to an auxiliary sliding column (4), the bottom of the frame (1) is provided with a wheel (12), one side of the frame (1) is slidably connected to a sliding frame (3), and a core-taking device is provided on the sliding frame (3). The core-taking device includes a pulley motor (13) and a gear motor (11). The output end of the pulley motor (13) is fixedly connected to a drive pulley (6). A driven pulley (7) is provided on one side of the drive pulley (6). A screw (5) is threadedly connected to the axial direction of the driven pulley (7). A connecting plate (21) is provided at one end of the screw (5). The output end of the gear motor (11) is fixedly connected to a drive gear (8). A driven gear (9) is provided on one side of the drive gear (8). The drive gear (8) and the driven gear (9) are meshed. A core-taking cylinder (10) is fixedly connected inside the driven gear (9). The core sampling cylinder (10) is provided with a cross plate (14) at the top, and a sliding groove (15) is provided on the cross plate (14). A clamping plate (16) is slidably connected to one side of the cross plate (14), and a groove (20) adapted to the clamping plate (16) is provided on the inner wall of the core sampling cylinder (10).
2. The sampling device for road and bridge testing according to claim 1, characterized in that: A connecting rod (19) is provided between the connecting plate (21) and the clamping plate (16), and the two ends of the connecting rod (19) are respectively hinged to the connecting plate (21) and the clamping plate (16).
3. The sampling device for testing and detecting of road and bridge according to claim 1, characterized in that: The screw (5) is rotatably connected to the cross plate (14).
4. The sampling device for testing and detecting of road and bridge according to claim 1, characterized in that: The driven pulley (7) has a threaded hole in the middle, and the screw (5) is threadedly connected to the middle of the driven pulley (7) through the threaded hole.
5. The sampling device for testing and detecting of road and bridge according to claim 1, characterized in that: The clamping plate (16) is slidably connected to the cross plate (14) via the slide groove (15).