Concrete drawing instrument for engineering test detection
By designing a concrete pull-out instrument with adjustable height and angle, the problems of equipment falling and adaptability to detection orientation were solved, achieving convenient operation with stable fixation and multi-directional detection.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- JIANGSU ZHONGYU TESTING TECH CO LTD
- Filing Date
- 2025-05-14
- Publication Date
- 2026-04-21
AI Technical Summary
Existing concrete pull-out testers are prone to falling and damage during pull-out testing due to anchor rod breakage, and they are difficult to adapt to testing requirements in different orientations, such as vertical or inclined surfaces.
A concrete pull-out device comprising a base plate, support frame, lifting plate, rotating plate, and constraint belt was designed. The height and angle are adjusted by a dual-axis motor and drive assembly. The constraint belt is used to fix the device to prevent it from falling. The position and angle of the device are adjusted by a threaded rod and bevel gear system.
It achieves stable fixation of the concrete pull-out tester, preventing the equipment from falling, and can adapt to the testing needs of different heights and angles, making it convenient to conduct pull-out tests on concrete from different directions.
Smart Images
Figure CN224152200U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of building engineering quality testing technology, specifically a concrete pull-out tester for engineering testing. Background Technology
[0002] Currently, in engineering testing, the pull-out strength of concrete and the bond strength of local repair materials are usually determined using concrete pull-out equipment. The principle is to apply a continuous and stable tensile force to the concrete specimen of the building through the concrete pull-out equipment until the internal cracks in the concrete specimen expand, thereby determining the bond strength of the specimen and its ability to withstand tensile force.
[0003] During on-site testing, the anchor rod is fixedly connected to the inside of the wall and extends out partially. During testing, the pull-out device and anchor must be sequentially fitted onto the anchor rod or rebar, ensuring a tight fit between the wall, the pull-out device, and the anchor. The anchor is then secured with clamps. The friction between the wall and the pull-out device, as well as the friction between the pull-out device and the anchor, effectively fixes the pull-out device. A reaction support ring can also be added between the wall and the pull-out device during testing to prevent wear. A high-pressure oil pipe connects the pull-out device to a manual pump, which is then used for pressurization. If the extended portion of the anchor rod or rebar is insufficient during testing, it can be lengthened by welding.
[0004] However, current concrete pull-out apparatuses on the market have several shortcomings in performing pull-out tests. In particular, when the anchor bolt breaks during the pull-out process, the apparatus may fall and be damaged. Furthermore, existing concrete pull-out apparatuses are not convenient to operate when testing at high locations, and these devices also have limitations in angle adjustment, making them unsuitable for testing different orientations, such as vertical or inclined surfaces. Therefore, this invention provides a concrete pull-out apparatus for engineering testing to solve the aforementioned problems. Utility Model Content
[0005] The purpose of this invention is to provide a concrete pull-out tester for engineering testing, in order to solve the problems mentioned in the background art.
[0006] To achieve the above objectives, this utility model provides the following technical solution:
[0007] A concrete pull-out tester for engineering testing includes a base plate and a concrete pull-out tester body. A support frame is fixedly installed on the top surface of the base plate. A lifting plate for adjusting the height of the concrete pull-out tester body is movably installed on the top surface of the two support frames. A dual-axis motor for providing power for lifting the lifting plates is fixedly installed on the top surface of the base plate. A rotating plate for adjusting the tilt angle of the concrete pull-out tester body is rotatably installed on the top surface of the lifting plate. A movable plate for adjusting the position of the concrete pull-out tester body is slidably installed on the top surface of the rotating plate. A support plate for fixing and supporting the concrete pull-out tester body is fixedly installed on the top surface of the movable plate. A placement groove is opened on the top surface of both support plates, and the concrete pull-out tester body is located in the placement groove.
[0008] As a further embodiment of this utility model, a fixing plate is fixedly installed on the surface of the support frame, a threaded rod is rotatably installed inside the fixing plate, a first bevel gear is fixedly installed at the bottom end of the threaded rod, an internal threaded cylinder is threadedly installed on the surface of the threaded rod, and the top end of the internal threaded cylinder is fixedly connected to the lifting plate.
[0009] As a further embodiment of this utility model, a rotating shaft is fixedly installed at the output end of the dual-axis motor, and a second bevel gear is fixedly installed at the end of the rotating shaft away from the output end of the dual-axis motor, wherein the second bevel gear meshes with the first bevel gear.
[0010] As a further embodiment of this utility model, the top surface of the lifting plate is provided with a drive assembly for providing power for the rotation of the rotating plate. The drive assembly includes a first lead screw rotatably installed inside the lifting plate. An adjusting handwheel is fixedly installed at one end of the first lead screw. A first threaded block is threadedly installed on the surface of the first lead screw. A hinge seat is fixedly installed on the top surface of the first threaded block. A connecting rod is rotatably installed on the top surface of the hinge seat. The top end of the connecting rod is hinged to the bottom surface of the rotating plate.
[0011] As a further embodiment of this utility model, a drive motor is fixedly installed on the surface of the rotating plate, a second lead screw is fixedly installed at the output end of the drive motor, a second threaded block is threaded on the surface of the second lead screw, and the top of the second threaded block is fixedly connected to the moving plate.
[0012] As a further embodiment of this utility model, a constraint band is rotatably mounted on the top surface of the support plate, and a locking block is fixedly mounted at one end of each of the two constraint bands. A locking groove is formed on the top surface of the support plate, and the locking block engages with the locking groove.
[0013] Compared with the prior art, the beneficial effects of this utility model are:
[0014] 1. When using this utility model, by inserting the card block into the card slot, the constraint strap can fix the concrete pull-out device body, so that there is no need to hold the concrete pull-out device body continuously during use, and at the same time, it avoids the situation where the anchor rod breaks, causing the concrete pull-out device body to fall and be damaged.
[0015] 2. When this utility model is in use, the output end of the dual-axis motor rotates, causing the internal threaded cylinder to move, which in turn drives the lifting plate to move. This allows the height of the concrete pull-out tester to be adjusted, making it convenient to perform pull-out tests on anchor rods on concrete at different heights. Through the setting of the drive component, the bottom end of the connecting rod moves along the first groove, driving the rotating plate to move, thereby adjusting the tilt angle of the concrete pull-out tester and facilitating pull-out testing on inclined concrete. Attached Figure Description
[0016] Figure 1 This is a schematic diagram of a concrete pull-out apparatus used for engineering testing.
[0017] Figure 2 This is a cross-sectional view of the support frame in a concrete pull-out tester used in engineering testing.
[0018] Figure 3 This is a schematic diagram of the support frame in a concrete pull-out tester used for engineering testing.
[0019] Figure 4 This is a cross-sectional view of the lifting plate in a concrete pull-out tester used in engineering testing.
[0020] Figure 5 This is a schematic diagram of the constraint band in a concrete pull-out tester used in engineering testing.
[0021] In the diagram: 1. Base plate; 2. Support frame; 3. Lifting plate; 4. Fixing plate; 5. Threaded rod; 6. First bevel gear; 7. Internal threaded cylinder; 8. Limiting plate; 9. Slide groove; 10. Limiting groove; 11. Dual-axis motor; 12. Rotating shaft; 13. Second bevel gear; 14. First lead screw; 15. Adjusting handwheel; 16. First threaded block; 17. First groove; 18. Hinge seat; 19. Connecting rod; 20. Rotating plate; 21. Drive motor; 22. Second lead screw; 23. Second threaded block; 24. Second groove; 25. Moving plate; 26. Support plate; 27. Placement groove; 28. Concrete pull-out instrument body; 29. Constraint belt; 30. Locking block; 31. Locking groove. Detailed Implementation
[0022] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.
[0023] Please see Figures 1-5 In this embodiment of the present invention, a concrete pull-out tester for engineering testing includes a base plate 1 and a concrete pull-out tester body 28. A support frame 2 is fixedly installed on the top surface of the base plate 1. A lifting plate 3 for adjusting the height of the concrete pull-out tester body 28 is movably installed on the top surface of the two support frames 2. A dual-axis motor 11 for providing power for lifting the lifting plate 3 is fixedly installed on the top surface of the base plate 1. A rotating plate 20 for adjusting the tilt angle of the concrete pull-out tester body 28 is rotatably installed on the top of the lifting plate 3. A moving plate 25 for adjusting the position of the concrete pull-out tester body 28 is slidably installed on the top surface of the rotating plate 20. A support plate 26 for fixing and supporting the concrete pull-out tester body 28 is fixedly installed on the top surface of the moving plate 25. A placement groove 27 is opened on the top surface of both support plates 26, and the concrete pull-out tester body 28 is located in the placement groove 27.
[0024] A fixing plate 4 is fixedly installed on the surface of the support frame 2. A threaded rod 5 is rotatably installed inside the fixing plate 4. A first bevel gear 6 is fixedly installed at the bottom end of the threaded rod 5. An internal threaded cylinder 7 is threadedly installed on the surface of the threaded rod 5. In order to ensure that the internal threaded cylinder 7 can move up and down stably within the support frame 2, a limiting plate 8 is fixedly installed on the outer wall of the internal threaded cylinder 7. A sliding groove 9 is opened inside the support frame 2. A limiting groove 10 is opened on the inner wall of the sliding groove 9, and the limiting plate 8 is slidably installed inside the limiting groove 10. The top end of the internal threaded cylinder 7 is fixedly connected to the lifting plate 3.
[0025] A rotating shaft 12 is fixedly installed at the output end of the dual-axis motor 11. A second bevel gear 13 is fixedly installed at the end of the rotating shaft 12 away from the output end of the dual-axis motor 11. The second bevel gear 13 is meshed with the first bevel gear 6.
[0026] The top surface of the lifting plate 3 is provided with a drive assembly for providing power for the rotation of the rotating plate 20. The drive assembly includes a first lead screw 14 rotatably installed inside the lifting plate 3. An adjusting handwheel 15 is fixedly installed at one end of the first lead screw 14. A first threaded block 16 is threadedly installed on the surface of the first lead screw 14. In order to ensure that the first threaded block 16 can slide stably inside the lifting plate 3, a first groove 17 is provided on the top surface of the lifting plate 3, and the first threaded block 16 is slidably installed inside the first groove 17. A hinge seat 18 is fixedly installed on the top surface of the first threaded block 16. A connecting rod 19 is rotatably installed on the top surface of the hinge seat 18. The top end of the connecting rod 19 is hinged to the bottom surface of the rotating plate 20.
[0027] A drive motor 21 is fixedly mounted on the surface of the rotating plate 20. A second lead screw 22 is fixedly mounted on the output end of the drive motor 21. A second threaded block 23 is threadedly mounted on the surface of the second lead screw 22. In order to ensure that the second threaded block 23 can slide stably in the rotating plate 20, a second groove 24 is provided on the top surface of the rotating plate 20, and the second threaded block 23 is slidably mounted in the inside of the second groove 24. The top of the second threaded block 23 is fixedly connected to the moving plate 25.
[0028] The top surface of the support plate 26 is rotatably mounted with constraint straps 29, and one end of each constraint strap 29 is fixedly mounted with a locking block 30. The top surface of the support plate 26 is provided with a locking groove 31, and the locking block 30 engages with the locking groove 31.
[0029] The working principle of this utility model is as follows: The operator places the concrete pull-out instrument body 28 on the placement groove 27 on the support plate 26, picks up the restraint strap 29 and inserts the locking block 30 into the locking groove 31 to fix the concrete pull-out instrument body 28. This eliminates the need to continuously hold the concrete pull-out instrument body 28 during use and avoids the anchor rod breaking, which could cause the concrete pull-out instrument body 28 to fall and be damaged. The drive motor 21 is started, and the output end of the drive motor 21 rotates, driving the second lead screw 22 to rotate, which in turn moves the second threaded block 23, causing the moving plate 25 to move, which in turn moves the fixed concrete pull-out instrument body 28, so that the concrete pull-out instrument body 28 is fitted onto the anchor rod surface on the concrete and makes the concrete pull-out instrument body 28 contact with the concrete. The concrete pull-out instrument body 28 is then started to perform pull-out testing. When testing concrete at different heights... When testing anchor bolts, the dual-axis motor 11 is started. The output end of the dual-axis motor 11 rotates, driving the rotating shaft 12 to rotate, which in turn drives the second bevel gear 13 to rotate. The first bevel gear 6 meshes with the second bevel gear 13, causing the first bevel gear 6 to rotate, which in turn drives the threaded rod 5 to rotate. The threaded rod 5 is threadedly connected to the internal threaded cylinder 7, causing the internal threaded cylinder 7 to move, which in turn drives the lifting plate 3 to move. This allows the height of the concrete pull-out tester body 28 to be adjusted, making it convenient to perform pull-out tests on anchor bolts on concrete at different heights. When the concrete test surface is inclined, the adjusting handwheel 15 is rotated, driving the first lead screw 14 to rotate, which in turn drives the first threaded block 16 to move, causing the hinge seat 18 to move. This causes the bottom end of the connecting rod 19 to move along the first groove 17, which in turn drives the rotating plate 20 to move, thus adjusting the tilt angle of the concrete pull-out tester body 28, facilitating pull-out tests on inclined concrete.
[0030] The above are merely preferred embodiments of this utility model, but the scope of protection of this utility model is not limited thereto. Any equivalent substitutions or modifications made by those skilled in the art within the scope of the technology disclosed in this utility model, based on the technical solution and inventive concept of this utility model, should be included within the scope of protection of this utility model.
Claims
1. A concrete pullout apparatus for engineering test detection, comprising a base plate (1) and a concrete pullout apparatus body (28), characterized in that, A support frame (2) is fixedly installed on the top surface of the base plate (1). A lifting plate (3) for adjusting the height of the concrete pull-out instrument body (28) is movably installed on the top surface of the two support frames (2). A dual-axis motor (11) for providing power for the lifting plate (3) is fixedly installed on the top surface of the base plate (1). A rotating plate (20) for adjusting the tilt angle of the concrete pull-out instrument body (28) is rotatably installed on the top of the lifting plate (3). A moving plate (25) for adjusting the position of the concrete pull-out instrument body (28) is slidably installed on the top surface of the rotating plate (20). A support plate (26) for fixing and supporting the concrete pull-out instrument body (28) is fixedly installed on the top surface of the moving plate (25). A placement groove (27) is opened on the top surface of both support plates (26). The concrete pull-out instrument body (28) is located in the placement groove (27).
2. The concrete pullout apparatus for engineering test and detection according to claim 1, characterized in that, A fixing plate (4) is fixedly installed on the surface of the support frame (2). A threaded rod (5) is rotatably installed inside the fixing plate (4). A first bevel gear (6) is fixedly installed at the bottom end of the threaded rod (5). An internal threaded cylinder (7) is threadedly installed on the surface of the threaded rod (5). The top end of the internal threaded cylinder (7) is fixedly connected to the lifting plate (3).
3. The concrete pullout apparatus for engineering test and detection according to claim 2, characterized in that, A rotating shaft (12) is fixedly installed at the output end of the dual-axis motor (11). A second bevel gear (13) is fixedly installed at the end of the rotating shaft (12) away from the output end of the dual-axis motor (11). The second bevel gear (13) meshes with the first bevel gear (6).
4. The concrete pullout apparatus for engineering test and inspection according to claim 1, wherein The top surface of the lifting plate (3) is provided with a drive assembly for providing power for the rotation of the rotating plate (20). The drive assembly includes a first lead screw (14) rotatably installed inside the lifting plate (3). One end of the first lead screw (14) is fixedly installed with an adjusting handwheel (15). The surface of the first lead screw (14) is threaded with a first threaded block (16). The top surface of the first threaded block (16) is fixedly installed with a hinge seat (18). The top surface of the hinge seat (18) is rotatably installed with a connecting rod (19). The top end of the connecting rod (19) is hinged to the bottom surface of the rotating plate (20).
5. The concrete pullout apparatus for engineering test and inspection according to claim 1, wherein A drive motor (21) is fixedly installed on the surface of the rotating plate (20). A second lead screw (22) is fixedly installed at the output end of the drive motor (21). A second threaded block (23) is threaded on the surface of the second lead screw (22). The top of the second threaded block (23) is fixedly connected to the moving plate (25).
6. The concrete pullout apparatus for engineering test and inspection according to claim 1, wherein The top surface of the support plate (26) is rotatably mounted with a constraint band (29), and one end of each constraint band (29) is fixedly mounted with a locking block (30). The top surface of the support plate (26) is provided with a locking groove (31), and the locking block (30) engages with the locking groove (31).