Asphalt concrete axial tensile test clamp
The asphalt concrete axial tensile test fixture, designed with a worm gear structure and spring clip linkage, solves the problem of the accuracy of the assessment of the influence of glue during clamping, and achieves more reliable and efficient test data acquisition.
Patent Information
- Application Number
- CN202423206607.3
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-12-25
- Publication Date
- 2026-01-23
- Estimated Expiration
- 2034-12-25
AI Technical Summary
The application of strong adhesive during clamping of traditional asphalt concrete axial tensile test fixtures affects the accuracy of the assessment, resulting in inaccurate tensile properties.
An axial tensile test fixture for asphalt concrete was designed, which adopts a worm gear structure and a spring-locking block linkage mechanism. The rotation of the worm gear drives the clamping component to approach the concrete column, and the linkage of the spring-locking block achieves convenient connection and avoids the influence of glue.
It improves the reliability and accuracy of test data, reduces the influence of external factors, is easy to connect, and saves time.
Smart Images
Figure CN223827428U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The utility model relates to concrete detection technical field especially relates to a kind of asphalt concrete axial tensile test fixture. BACKGROUND
[0002] Axial tensile test is the only feasible method to obtain uniaxial tensile stress-strain relationship curve, and it is important to master the law of tensile stress-strain full curve, provide necessary constitutive relation for the whole process analysis of concrete structure stress, and it has important significance for the elastic-plastic analysis of concrete and reinforced concrete structure, damage and fracture mechanism analysis and ductility and restoring force characteristic research of seismic structure etc.. There are various shapes of asphalt concrete longitudinal section for axial tensile test, and round is one of them.
[0003] However, the traditional asphalt concrete axial tensile test fixture will mostly smear strong glue on the part of the fixture in contact with the asphalt concrete when clamping, so that the fixture and the asphalt concrete are more firm, but smearing glue will affect the accuracy of evaluating the tensile performance of asphalt concrete, so an asphalt concrete axial tensile test fixture is proposed to solve the above problems. UTILITY MODEL CONTENT
[0004] In order to make up for the above shortcomings, the utility model provides an asphalt concrete axial tensile test fixture, which aims to improve the problem that the traditional asphalt concrete axial tensile test fixture will mostly smear strong glue on the part of the fixture in contact with the asphalt concrete when clamping, resulting in affecting the accuracy and reliability of evaluating the tensile performance of asphalt concrete.
[0005] In order to achieve the above purpose, the utility model adopts the following technical scheme: an asphalt concrete axial tensile test fixture, comprising two installation plates, the outer part of the installation plate is rotatably connected with a movable rod, the outer part of the movable rod is fixedly connected with a worm gear, the outer part of the installation plate is rotatably connected with a worm, the other end of the worm is fixedly connected with a rocker, the bottom of the installation plate is fixedly connected with a support plate, the outer side of the support plate is rotatably connected with a turntable, the outer side of the turntable is rotatably connected with two connecting pieces, the outer side of the connecting piece is rotatably connected with a moving rod, the other end of the moving rod is fixedly connected with a clamping piece, the inner side of the clamping piece is slidably connected with a concrete column, the outer part of the support plate is fixedly connected with a limiting plate, the top of the installation plate is fixedly connected with a fixed piece, the outer side of the fixed piece is slidably connected with a connecting block, the inner part of the fixed piece is installed with a connecting assembly, and the connecting assembly is used for connecting the connecting block.
[0006] As a further description of the above technical scheme:
[0007] The connecting assembly comprises two pull rods, the outer part of the pull rod is slidingly connected to the inner part of the fixing piece, the outer part of the pull rod is sleeved with a spring, the other end of the pull rod is fixedly connected with a baffle, the other side of the baffle is fixedly connected with a clamping block, the inner part of the fixing piece is provided with a linkage groove, and the outer side of the clamping block is provided with a clamping groove.
[0008] As a further description of the above technical solution:
[0009] The outer side of the worm gear is meshingly connected with the outer part of the corresponding worm, and the outer part of the rocker is provided with anti-skid lines.
[0010] As a further description of the above technical solution:
[0011] The outer part of the limiting plate is provided with two sliding grooves, and the outer part of the moving rod is slidingly connected with the inner wall of the sliding groove.
[0012] As a further description of the above technical solution:
[0013] The clamping piece is arranged in an arc shape, and the outer part of the clamping piece is fixedly connected with a rubber pad.
[0014] As a further description of the above technical solution:
[0015] One end of the spring is fixedly connected with the inner wall of the linkage groove, and the other end of the spring is fixedly connected with the end of the baffle away from the clamping block.
[0016] As a further description of the above technical solution:
[0017] The longitudinal section of the baffle is square, and the outer part of the baffle is slidingly connected with the inner wall of the linkage groove.
[0018] As a further description of the above technical solution:
[0019] The shape of the clamping block is matched with the clamping groove, and the clamping block and the clamping groove are in plug-in cooperation.
[0020] The utility model has the advantages of the following:
[0021] 1、In the utility model, the worm is driven to rotate by rotating the rocker, and the worm gear is driven to rotate, the rotating worm gear drives the rotating disc to slide through the connecting piece, and the two clamping pieces are driven to approach each other, the clamping pieces clamp and fix the concrete column, and the damage of the concrete column caused by incorrect support during the experiment can be avoided.
[0022] 2. The utility model discloses, through pulling the pull rod, make the baffle drive the slide of the clamping block, until the clamping block is completely retracted in the inside of linkage groove, at this moment, spring is in compression state, and then the outside of the link block is attached with the inner wall of fixed part, and then loosen the pull rod, under the elastic force of spring, the clamping block is inserted into the inside of the clamping groove, namely the connection of clamp and concrete tensile testing machine is completed, and the connection is more convenient, saves time. BRIEF DESCRIPTION OF DRAWINGS
[0023] Figure 1 A three-dimensional view of the asphalt concrete axial tensile test fixture is provided for the utility model;
[0024] Figure 2 A support plate structure schematic view of the asphalt concrete axial tensile test fixture is provided for the utility model;
[0025] Figure 3 A fixed part structure schematic view of the asphalt concrete axial tensile test fixture is provided for the utility model;
[0026] Figure 4 For Figure 1 The enlarged view of A in the middle.
[0027] Legend:
[0028] 1, mounting plate, 2, fixed part, 3, link block, 4, pull rod, 5, worm, 6, support plate, 7, rocker, 8, limit plate, 9, clamping piece, 10, concrete column, 11, worm wheel, 12, movable rod, 13, turntable, 14, connecting piece, 15, sliding slot, 16, spring, 17, linkage groove, 18, baffle, 19, clamping groove, 20, clamping block, 21, moving rod. DETAILED DESCRIPTION
[0029] The technical solutions in the embodiments of the utility model will be clearly and completely described below with reference to the drawings in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by those skilled in the art without creative labor belong to the scope of protection of the utility model.
[0030] Referring to Figure 1 , Figure 2 and Figure 4The utility model provides an embodiment: an asphalt concrete axial tensile test fixture, the outside of mounting panel 1 is rotatably connected with movable rod 12, the outside fixed connection of movable rod 12 has worm gear 11, the outside rotatably connected of mounting panel 1 has worm 5, the other end fixed connection of worm 5 has rocker 7, the bottom fixed connection of mounting panel 1 has support plate 6, the outside rotatably connected of support plate 6 has turntable 13, the outside rotatably connected of turntable 13 has two connecting pieces 14, the outside rotatably connected of connecting piece 14 has moving rod 21, the other end fixed connection of moving rod 21 has clamping piece 9, the inside sliding connection of clamping piece 9 has concrete column 10, the outside fixed connection of support plate 6 has limit stop 8, the top fixed connection of mounting panel 1 has fixed part 2, the outside sliding connection of fixed part 2 has link block 3, the inside installation of fixed part 2 has connecting assembly, and connecting assembly is used to connect link block 3.
[0031] Further, first, concrete column 10 is placed in the suitable position, at this time, by rotating rocker 7, drives worm 5 synchronous rotation, further worm 5 drives worm gear 11 rotation simultaneously, further drives movable rod 12 rotation, simultaneously, drives turntable 13 synchronous rotation, under the rotation of turntable 13, make two connecting pieces 14 drive two clamping pieces 9 approach each other through moving rod 21, by clamping piece 9 to concrete column 10 is clamped fixed, help to reduce the influence of external factors on test result, make test data more reliable and comparable.
[0032] Reference Figure 1 , Figure 2 And Figure 3 Connecting assembly includes two pull rods 4, the outside sliding connection of pull rod 4 is in the inside of fixed part 2, the outside of pull rod 4 is equipped with spring 16, the other end fixed connection of pull rod 4 has baffle 18, the other side fixed connection of baffle 18 has clamping block 20, the inside of fixed part 2 is equipped with linkage groove 17, the outside of link block 3 is equipped with clamping groove 19;The end of spring 16 is fixedly connected with the inner wall of linkage groove 17, the other end of spring 16 is fixedly connected with the end of baffle 18 away from clamping block 20;The longitudinal section of baffle 18 is square, and the outside of baffle 18 is slidingly connected with the inner wall of linkage groove 17;The shape of clamping block 20 is matched with clamping groove 19, and clamping block 20 and clamping groove 19 are plug-in matched.
[0033] Further, additionally, when the clamp needs to be connected with the concrete tensile testing machine, the pull rod 4 is pulled, so that the baffle 18 drives the clamping block 20 to slide until the clamping block 20 is completely retracted into the inside of the linkage groove 17, at this time, the spring 16 is in a compressed state, and then the outside of the adapter block 3 is attached to the inner wall of the fixed part 2, and the other end of the adapter block 3 is fixed with the concrete tensile testing machine, at this time, the pull rod 4 is loosened, and under the action of the elastic force of the spring 16, the outside of the clamping block 20 is completely attached to the inner wall of the clamping groove 19, that is, the connection of the clamp and the concrete tensile testing machine is completed, which is convenient and further improves the work efficiency; the linkage groove 17 and the baffle 18 limit the spring 16 to prevent the spring 16 from deforming due to uneven stress; when the pull rod 4 is pulled, the baffle 18 slides along the inner wall of the linkage groove 17, so that the baffle 18 is more stable; the clamping block 20 is clamped into the clamping groove 19, so that the connection between the clamp and the concrete tensile testing machine is more convenient.
[0034] With reference to Figure 1 , Figure 2 and Figure 4 , the outside of the worm gear 11 is meshed and connected with the outside of the corresponding position of the worm 5, and the outside of the rocker 7 is provided with anti-skid lines; the outside of the limiting plate 8 is provided with two sliding grooves 15, and the outside of the moving rod 21 is slidingly connected with the inner wall of the sliding groove 15; the clamping part 9 is arc-shaped, and the outside of the clamping part 9 is fixedly connected with a rubber pad.
[0035] Further, by rotating the rocker 7, the worm 5 is simultaneously rotated, and then under the meshing action of the worm 5, the worm gear 11 is rotated, and the anti-skid lines on the outside of the rocker 7 increase the friction of the rocker 7, which is convenient for the operator to operate; when the rotating disc 13 rotates, the moving rod 21 slides along the inner wall of the sliding groove 15, which increases the stability of the moving rod 21 and further increases the reliability of the clamping part 9; the clamping part 9 is designed to be arc-shaped, which can better adhere to the outside of the concrete column 10, so that the clamping is more firm; the rubber pad increases the friction between the clamping part 9 and the concrete column 10, and improves the stability of the clamping.
[0036] Working principle: first, the concrete column 10 is placed in the designated position, at this time, the worm 5 is simultaneously rotated by rotating the rocker 7, and then the worm 5 drives the worm gear 11 to rotate simultaneously through meshing, and then the worm gear 11 drives the rotating disc 13 to rotate through the movable rod 12, under the rotation of the rotating disc 13, the connecting part 14 drives the moving rod 21 to slide along the inner wall of the sliding groove 15, and then drives the two clamping parts 9 to approach each other, and the clamping part 9 clamps and fixes the concrete column 10, which can ensure that the concrete column 10 maintains a stable position and direction when subjected to stress, and avoids unnecessary displacement or rotation of the sample.
[0037] In addition, when the clamp needs to be connected with the concrete tensile testing machine, the pull rod 4 is pulled, so that the baffle 18 slides along the inner wall of the linkage groove 17, and then the clamping block 20 slides until the clamping block 20 is completely retracted into the inside of the linkage groove 17, at this time, the spring 16 is in a compressed state, and then the outer side of the adapter block 3 is attached to the inner wall of the fixed part 2, at this time, the pull rod 4 is loosened, and under the elastic force of the spring 16, the clamping block 20 is clamped into the inside of the clamping groove 19, that is, the connection of the clamp and the concrete tensile testing machine is completed, and the connection process is simple and time-saving.
[0038] Finally, it should be noted that: the above is only the preferred embodiment of the utility model, and is not used to limit the utility model, although the utility model is described in detail with reference to the foregoing embodiments, for the person skilled in the art, it still can modify the technical scheme recorded in the foregoing each embodiment, or make equivalent replacement to part of the technical features, any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the utility model should be included in the protection scope of the utility model.
Claims
1. A clamp for axial tensile testing of asphalt concrete, comprising two mounting plates (1), characterized in that: A movable rod (12) is rotatably connected to the outside of the mounting plate (1). A worm gear (11) is fixedly connected to the outside of the movable rod (12). A worm (5) is rotatably connected to the outside of the mounting plate (1). A rocker arm (7) is fixedly connected to the other end of the worm (5). A support plate (6) is fixedly connected to the bottom of the mounting plate (1). A turntable (13) is rotatably connected to the outside of the support plate (6). Two connecting pieces (14) are rotatably connected to the outside of the turntable (13). A movable rod (21) is rotatably connected to the outside of the mounting plate (1), and a clamping member (9) is fixedly connected to the other end of the movable rod (21). A concrete column (10) is slidably connected to the inside of the clamping member (9). A limiting plate (8) is fixedly connected to the outside of the support plate (6). A fixing member (2) is fixedly connected to the top of the mounting plate (1). A connecting block (3) is slidably connected to the outside of the fixing member (2). A connecting component is installed inside the fixing member (2). The connecting component is used to connect the connecting block (3).
2. The asphalt concrete axial tensile test fixture according to claim 1, characterized in that: The connecting assembly includes two pull rods (4), the outside of which is slidably connected to the inside of the fixing member (2), and a spring (16) is sleeved on the outside of the pull rods (4). A baffle (18) is fixedly connected to the other end of the pull rods (4), and a locking block (20) is fixedly connected to the other side of the baffle (18). A linkage groove (17) is opened inside the fixing member (2), and a locking groove (19) is opened on the outside of the connecting block (3).
3. The asphalt concrete axial tensile test fixture according to claim 1, characterized in that: The outer side of the worm gear (11) is meshed with the outer side of the corresponding worm (5), and the outer side of the rocker arm (7) is provided with anti-slip texture.
4. The asphalt concrete axial tensile test fixture according to claim 1, characterized in that: The limiting plate (8) has two sliding grooves (15) on its outside, and the outside of the moving rod (21) is slidably connected to the inner wall of the sliding groove (15).
5. The asphalt concrete axial tensile test fixture according to claim 1, characterized in that: The clamping member (9) is arc-shaped, and a rubber pad is fixedly connected to the outside of the clamping member (9).
6. The asphalt concrete axial tensile test fixture according to claim 2, characterized in that: One end of the spring (16) is fixedly connected to the inner wall of the linkage groove (17), and the other end of the spring (16) is fixedly connected to the end of the baffle (18) away from the locking block (20).
7. The asphalt concrete axial tensile test fixture according to claim 2, characterized in that: The longitudinal section of the baffle (18) is square, and the outer side of the baffle (18) is slidably connected to the inner wall of the linkage groove (17).
8. The asphalt concrete axial tensile test fixture according to claim 2, characterized in that: The shape of the card block (20) matches the card slot (19), and the card block (20) and the card slot (19) are in a plug-in fit.