Mechanical clamp for asphalt concrete experiment
By integrating clamping and pressing mechanisms on a single platform, the mechanical fixture solves the problem that existing asphalt concrete test fixtures cannot adapt to different test types, enabling efficient tensile and bending tests.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- QINGDAO CHENGJIAN GRP SHIZHENG MATERIAL CO LTD
- Filing Date
- 2025-03-20
- Publication Date
- 2026-04-28
AI Technical Summary
Existing asphalt concrete experimental fixtures cannot flexibly adapt to different experimental types, resulting in cumbersome operation and high costs.
Design a mechanical clamp comprising a base plate, a clamping mechanism, and a pressing mechanism, capable of simultaneously performing tensile and bending experiments on a single platform, with clamping and pressing functions achieved via a hydraulic or electric telescopic rod.
It improves the efficiency of asphalt concrete experiments, avoids the tedious operation of changing platforms or fixtures, and enhances the flexibility and efficiency of experiments.
Smart Images
Figure CN224176240U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of asphalt concrete technology, and in particular to a mechanical clamp for asphalt concrete experiments. Background Technology
[0002] In the field of asphalt concrete testing, clamps are typically used to hold the long strips of asphalt concrete to be tested. However, existing clamps are usually designed for a single test type (such as tension or bending) and cannot flexibly adapt to the needs of different test types. For example, after completing a tension test, a bending test requires moving to another platform or changing the clamp, which is cumbersome and costly. Therefore, this application provides a mechanical clamp for asphalt concrete testing that simultaneously meets the requirements for tension and bending on a single clamping platform, thereby improving experimental efficiency. Utility Model Content
[0003] The purpose of this invention is to provide a mechanical clamp for asphalt concrete experiments that has a simple structure and improves experimental efficiency.
[0004] This utility model is achieved through the following measures:
[0005] A mechanical clamp for asphalt concrete experiments, characterized in that it includes a base plate, a pair of clamping mechanisms symmetrically arranged on the base plate, and a pressing mechanism for bending experiments arranged in the middle of one side of the base plate;
[0006] The clamping mechanism includes an upright plate disposed on the base plate, and a pair of clamping plates for clamping asphalt concrete are disposed on the inner side of the upright plate facing the middle of the base plate.
[0007] The pressing mechanism includes a U-shaped side plate on the base plate, and a telescopic rod extending downward on the U-shaped side plate. The telescopic rod can be a hydraulic rod or an electric telescopic rod, and a pressure shaft is provided on the free end of the telescopic rod.
[0008] The specific features of this utility model also include:
[0009] The inner sides of the upright plate are provided with fixing plates on both sides. A pair of vertically distributed rollers are provided between the two fixing plates. The rollers are close to the free ends of the fixing plates. A through groove is provided on both sides of the fixing plates. A matching slider is provided in the groove. A mounting plate is provided between the two sliders and slides along the inner sides of the two fixing plates. The mounting plate is hinged to the clamping plates on the upper and lower sides of the inner side of the rollers. The free ends of the two clamping plates pass through the gap between the two rollers.
[0010] An auxiliary plate is provided in the middle of the inner side of the mounting plate. Springs are fixed on the upper and lower sides of the auxiliary plate. The other end of the spring is fixed to the corresponding side clamp. Under the action of the spring, the clamps on both sides extend outward, so that the clamps on both sides are tightly attached to the outer side of the rollers on both sides.
[0011] Both sides of the clamping plates have vertical plates at their free ends. The upper side of the vertical plates protrudes outward from the clamping plates to form a limiting structure, and the lower side of the vertical plates protrudes inward from the clamping plates and is set as an arc surface with anti-slip pads. The free ends of both sides of the clamping plates are equipped with clamps, which are a pair of symmetrically arranged U-shaped structural plates connected and fixed by bolts on both sides. During the experiment, the two ends of the asphalt concrete are inserted between the clamping plates of the clamping mechanism on both sides, and then the clamps press the vertical plates on both sides of the asphalt concrete against the upper and lower sides of the asphalt concrete. The limiting structure prevents the clamps from coming off.
[0012] The clamping mechanism further includes a T-shaped groove provided on the base plate, a T-shaped slider provided in the T-shaped groove, and the upright plate provided on the T-shaped slider;
[0013] A vertical plate is provided at the end of the base plate, and a second telescopic rod is provided on the vertical plate. The free end of the second telescopic rod is provided on the vertical plate. The second telescopic rod can be a hydraulic rod or an electric telescopic rod. When a tensile test is performed on the asphalt concrete, the second telescopic rods on both sides retract, thereby causing the rollers on the clamping mechanisms on both sides to move to both sides. The rollers press on the clamping plate, thereby causing the clamping plate to tightly press the asphalt concrete, preventing the asphalt concrete from detaching during the test, thus realizing the tensile test of the asphalt concrete clamped between the clamping mechanisms on both sides.
[0014] The clamping mechanism further includes a limiting mechanism, which includes a fixing block disposed on the outer side of the fixing plate. The fixing block is disposed at one end of the slide groove near the roller. A limiting bolt is provided on the fixing block by means of a threaded structure. An extension plate that cooperates with the limiting bolt is provided on the corresponding side of the slider. In use, the mounting plate is slid so that the vertical plate rests against the roller. Then, the limiting bolt is used to limit the vertical plate against the extension plate, keeping the vertical plate against the roller.
[0015] The pressing mechanism also includes a mounting block disposed at one free end of the telescopic rod. On both sides of the lower side of the mounting block, a pair of pressure rollers parallel to the rollers are provided by brackets. When a bending test is required on the asphalt concrete, the vertical plate is first placed against the rollers. Then, the distance between the rollers of the clamping mechanism on both sides is adjusted. The asphalt concrete is then placed on the rollers on both sides. The telescopic rod extends downward and the two pressure rollers are used to press down on the asphalt concrete to bend it.
[0016] Working process: When conducting a tensile test on asphalt concrete, firstly, both ends of the asphalt concrete are inserted between the clamping plates on both sides of the clamping mechanism. Then, the vertical plates on both sides are pressed tightly against the upper and lower sides of the asphalt concrete by the clamps. The limiting structure prevents the clamps from coming off. Then, the telescopic rods on both sides retract, causing the rollers on the clamping mechanism to move to both sides. The rollers press against the clamping plates, thereby making the clamping plates tightly press the asphalt concrete, preventing the asphalt concrete from coming off during the test, thus achieving the tensile test of the asphalt concrete clamped between the clamping mechanisms on both sides.
[0017] When a bending test is required on asphalt concrete, the vertical plate is first placed against the roller. Then, the distance between the rollers of the clamping mechanism on both sides is adjusted. The asphalt concrete is then placed on the rollers on both sides. The telescopic rod extends downwards, and the two pressure rollers are used to press down on the asphalt concrete to make it bend.
[0018] The beneficial effects of this utility model are as follows: This mechanical fixture can perform tensile and bending tests on asphalt concrete on a single platform, avoiding the cumbersome problems caused by changing platforms or fixtures, thereby improving experimental efficiency. Attached Figure Description
[0019] Figure 1 This is a schematic diagram of the overall structure of an embodiment of the present utility model.
[0020] Figure 2 for Figure 1 A magnified view of A in the middle.
[0021] Figure 3 This is a schematic diagram showing the installation of components such as springs in an embodiment of this utility model.
[0022] The attached diagram is labeled as follows: 1. Base plate; 2. T-shaped chute; 3. Vertical plate; 4. Telescopic rod II; 5. Vertical plate; 6. Asphalt concrete 6; 7. Pressure shaft; 8. U-shaped side plate; 9. Telescopic rod I; 10. Mounting plate; 11. Spring; 12. Roller; 13. Clamping plate; 14. Hoop; 15. Vertical plate; 16. Fixing plate; 17. Chute; 18. Limiting bolt; 19. Sliding block; 20. Auxiliary plate. Detailed Implementation
[0023] It should be noted that, unless otherwise specified, the embodiments and features described in these embodiments can be combined with each other.
[0024] In the description of this utility model, it should be understood that the terms "center," "longitudinal," "lateral," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," and "outer," etc., indicating orientation or positional relationships, are based on the orientation or positional relationships shown in the accompanying drawings and are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model. Furthermore, the terms "first," "second," etc., are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Thus, features defined with "first," "second," etc., may explicitly or implicitly include one or more of that feature. In the description of this utility model, unless otherwise stated, "a plurality of" means two or more.
[0025] 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.
[0026] To clearly illustrate the technical features of this solution, the following detailed implementation method will be used to explain the solution.
[0027] See Figures 1-3 A mechanical clamp for asphalt concrete experiments includes a base plate 1, a pair of clamping mechanisms symmetrically arranged on the base plate 1, and a pressing mechanism for bending experiments arranged in the middle of one side of the base plate 1.
[0028] The clamping mechanism includes a vertical plate 3 set on the base plate 1, and a pair of clamping plates 13 for clamping asphalt concrete 6 are provided on the inner side of the vertical plate 3 facing the middle of the base plate 1.
[0029] The pressing mechanism includes a U-shaped side plate 8 set on the base plate 1. A telescopic rod 9 extending downward is provided on the U-shaped side plate 8. The telescopic rod 9 can be a hydraulic rod or an electric telescopic rod. A pressure shaft 7 is provided on the free end of the telescopic rod 9.
[0030] Both sides of the inner side of the upright plate 3 are provided with fixed plates 16. A pair of vertically distributed rollers 12 are provided between the two fixed plates 16. The rollers 12 are close to the free ends of the fixed plates 16. Both sides of the fixed plates 16 are provided with transverse sliding grooves 17. Both sides of the sliding grooves 17 are provided with matching sliders 19. Between the two sliders 19, there is a mounting plate 10 that slides along the inner side of the two fixed plates 16. The mounting plate 10 is hinged with clamps 13 on the upper and lower sides of the inner side of the rollers 12. The free ends of the two clamps 13 pass through the gap between the two rollers 12.
[0031] An auxiliary plate 20 is provided in the middle of the inner side of the mounting plate 10. Springs 11 are fixed on the upper and lower sides of the auxiliary plate 20. The other end of the springs 11 is fixed on the corresponding side clamps 13. Under the action of the springs 11, the side clamps 13 extend outward, so that the side clamps 13 are tightly attached to the outer side of the side rollers 12.
[0032] Vertical plates 15 are provided at the free ends of both clamping plates 13. The upper side of the vertical plate 15 protrudes outward from the clamping plate 13 to form a limiting structure. The lower side of the vertical plate 15 protrudes inward from the clamping plate 13 and is set as an arc surface with anti-slip pads on the arc surface. Hoops 14 are provided around the free ends of both clamping plates 13. The hoops 14 are a pair of symmetrically arranged U-shaped structural plates and are connected and fixed by bolts on both sides. During the experiment, the two ends of the asphalt concrete 6 are inserted between the two clamping plates 13 of the clamping mechanism. Then, the vertical plates 15 on both sides are pressed against the upper and lower sides of the asphalt concrete 6 by the hoops 14. The limiting structure prevents the hoops 14 from coming off.
[0033] The clamping mechanism also includes a T-shaped slide 2 provided on the base plate 1, a T-shaped slider provided in the T-shaped slide 2, and a vertical plate 3 provided on the T-shaped slider;
[0034] A vertical plate 5 is provided at the end of the base plate 1, and a telescopic rod 4 is provided on the vertical plate 5. The free end of the telescopic rod 4 is provided on the vertical plate 3. The telescopic rod 4 can be a hydraulic rod or an electric telescopic rod. When the tensile test of the asphalt concrete 6 is carried out, the telescopic rods 4 on both sides retract, thereby causing the rollers 12 on the clamping mechanisms on both sides to move to both sides. The rollers 12 press on the clamping plate 13, thereby causing the clamping plate 13 to press the asphalt concrete 6 tightly, preventing the asphalt concrete 6 from detaching during the test, thereby realizing the tensile test of the asphalt concrete 6 clamped between the clamping mechanisms on both sides.
[0035] The clamping mechanism also includes a limiting mechanism, which includes a fixing block on the outer side of the fixing plate 16. The fixing block is located at one end of the slide groove 17 near the roller 12. A limiting bolt 18 is provided on the fixing block through a threaded structure. An extension plate that cooperates with the limiting bolt 18 is provided on the corresponding side slider 19. When in use, the mounting plate 10 is slid so that the vertical plate 15 rests against the roller 12. Then, the limiting bolt 18 is pressed against the extension plate to limit the vertical plate 15 and keep it against the roller 12.
[0036] The pressing mechanism also includes a mounting block set at the free end of the telescopic rod 9. On both sides of the lower side of the mounting block, there is a pair of pressure rollers 7 parallel to the rollers 12. When a bending test is required on the asphalt concrete 6, the vertical plate 15 is first placed against the rollers 12. Then the distance between the rollers 12 of the clamping mechanism on both sides is adjusted. Then the asphalt concrete 6 is placed on the rollers 12 on both sides. Then the telescopic rod 9 is extended downward, and the two pressure rollers 7 are used to press down on the asphalt concrete 6 to make it bend.
[0037] Working process: When conducting a tensile test on asphalt concrete 6, firstly, both ends of asphalt concrete 6 are inserted between the two clamping plates 13 of the two clamping mechanisms. Then, the vertical plates 15 on both sides are pressed tightly against the upper and lower sides of the asphalt concrete 6 by the clamping clamps 14. The limiting structure prevents the clamps 14 from coming off. Then, the two telescopic rods 4 on both sides retract, thereby causing the rollers 12 on the two clamping mechanisms to move to both sides. The rollers 12 press on the clamping plates 13, thereby making the clamping plates 13 press tightly against the asphalt concrete 6, preventing the asphalt concrete 6 from coming off during the test, thus achieving the tensile test of the asphalt concrete 6 clamped between the two clamping mechanisms.
[0038] When a bending test is required on the asphalt concrete 6, first, the vertical plate 15 is placed against the roller 12. Then, the distance between the rollers 12 of the clamping mechanism on both sides is adjusted. Then, the asphalt concrete 6 is placed on the rollers 12 on both sides. Then, the telescopic rod 9 is extended downwards, and the two pressure rollers 7 are used to press down on the asphalt concrete 6 to make it bend.
[0039] The technical features of this utility model not described can be implemented by or by using existing technology, and will not be repeated here. Of course, the above description is not a limitation of this utility model, and this utility model is not limited to the examples above. Any changes, modifications, additions or substitutions made by those skilled in the art within the scope of this utility model should also be within the protection scope of this utility model.
Claims
1. A mechanical clamp for asphalt concrete experiments, characterized in that, Includes a base plate (1), on which a pair of clamping mechanisms are symmetrically arranged, and a pressing mechanism for bending experiments is provided in the middle of one side of the base plate (1); The clamping mechanism includes a vertical plate (3) disposed on the base plate (1), and a pair of clamping plates (13) for clamping asphalt concrete (6) are disposed on the inner side of the vertical plate (3) facing the middle of the base plate (1); The pressing mechanism includes a U-shaped side plate (8) disposed on the base plate (1), a telescopic rod (9) extending downward on the U-shaped side plate (8), and a pressure shaft (7) disposed on the free end of the telescopic rod.
2. The mechanical clamp for asphalt concrete experiments according to claim 1, characterized in that, The inner sides of the upright plate (3) are provided with fixing plates (16) on both sides. A pair of rollers (12) are provided between the two fixing plates (16) and distributed vertically. The rollers (12) are close to the free ends of the fixing plates (16). A through groove (17) is provided horizontally on both sides of the fixing plates (16). A matching slider (19) is provided in the groove (17) on both sides. An mounting plate (10) is provided between the sliders (19) on both sides and slides along the inner sides of the two fixing plates (16). The mounting plate (10) is hinged with clamping plates (13) on the upper and lower sides of the inner side of the rollers (12) facing the mounting plates (10). The free ends of the two clamping plates (13) pass through the gap between the two rollers (12).
3. The mechanical clamp for asphalt concrete experiments according to claim 2, characterized in that, An auxiliary plate (20) is provided in the middle of the inner side of the mounting plate (10). Springs (11) are fixed on the upper and lower sides of the auxiliary plate (20). The other end of the springs (11) is fixed on the corresponding side clamps (13).
4. The mechanical clamp for asphalt concrete testing according to claim 3, characterized in that, Vertical plates (15) are provided at the free ends of the clamping plates (13) on both sides. The upper side of the vertical plate (15) protrudes outward from the clamping plate (13) to form a limiting structure. The lower side of the vertical plate (15) protrudes inward from the clamping plate (13) and is set as an arc surface, and an anti-slip pad is provided on the arc surface. Hoops (14) are provided around the free ends of the clamping plates (13) on both sides.
5. The mechanical clamp for asphalt concrete testing according to claim 4, characterized in that, The clamping mechanism also includes a T-shaped groove (2) provided on the base plate (1), a T-shaped slider is provided in the T-shaped groove (2), and the upright plate (3) is provided on the T-shaped slider; The bottom plate (1) is provided with a vertical plate (5) at its end, and a telescopic rod (4) is provided on the vertical plate (5). The free end of the telescopic rod (4) is provided on the vertical plate (3).
6. The mechanical clamp for asphalt concrete testing according to claim 5, characterized in that, The clamping mechanism also includes a limiting mechanism, which includes a fixing block disposed on the outer side of the fixing plate (16). The fixing block is disposed at one end of the slide groove (17) near the roller (12). A limiting bolt (18) is provided on the fixing block by means of a threaded structure. An extension plate that cooperates with the limiting bolt (18) is provided on the corresponding side of the slider (19).
7. The mechanical clamp for asphalt concrete testing according to claim 2, characterized in that, The pressing mechanism also includes a mounting block disposed at the free end of the telescopic rod (9), and a pair of pressing shafts (7) parallel to the roller (12) are disposed on both sides of the lower side of the mounting block by means of brackets.