一种沥青混合料冻融劈裂试验夹具
By introducing inserts and locking components into the freeze-thaw splitting test fixture for asphalt mixtures, and utilizing wedge-shaped fit to achieve rapid locking and disassembly of the pressure strip, the problem of cumbersome pressure strip replacement operations in the existing technology is solved, and the test efficiency is improved.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- CHINA FIRST HIGHWAY ENGINEERING CO LTD
- Filing Date
- 2025-08-19
- Publication Date
- 2026-07-17
AI Technical Summary
The existing asphalt mixture freeze-thaw splitting test fixture is cumbersome to operate when changing the pressure strip, requiring frequent loosening and tightening of screws, which results in a long time consumption.
A freeze-thaw splitting test fixture for asphalt mixtures was designed. It adopts a structure of insert blocks and locking components. The wedge-shaped cooperation of the insert blocks and springs enables quick locking and disassembly of the insert blocks, avoiding the cumbersome operation of traditional screw fixing.
It simplifies the process of changing pressure strips, improves operational efficiency, reduces replacement time, and increases testing efficiency.
Smart Images
Figure CN224518367U_ABST
Abstract
Claims
1. A freeze-thaw split test fixture for asphalt mixtures comprising a split test fixture body (1), characterised in that: The splitting test clamp body (1) has an insert block (5) fixed on the top of the upper pressure strip (1.6). The bottom of the upper pressure plate (1.1) on the splitting test clamp body (1) is provided with a first groove (10) for the insert block (5) to be inserted. Two locking blocks (6) are arranged in the first groove (10). The left and right side walls of the insert block (5) are provided with slots for the locking block (6) to be inserted. The upper pressure plate (1.1) is provided with a locking component for driving the locking block (6) to lock the insert block (5) in the first groove (10).
2. The asphalt mixture freeze-thaw split test fixture of claim 1, wherein: The locking assembly includes a second groove (11), which consists of two grooves, one on the left and one on the right, and is respectively opened at the bottom of the upper pressure plate (1.1). A first groove (10) is located between the two second grooves (11). A through hole (9) is provided between the first groove (10) and the second groove (11) for connecting them. A moving block (4) is fixed on each of the locking blocks (6). A fixing block (7) is fixed in each of the through holes (9). A spring (3) is provided between the fixing block (7) and the moving block (4). In the natural state of the spring (3), the locking block (6) is inserted into the slot on the insert block (5). A moving rod (8) is installed in each of the springs (3). A through slot is opened on the fixing block (7) for connecting the left and right sides. One end of the moving rod (8) is fixed on the moving block (4), and the other end is fixed through the through slot and fixed with a pull handle (2) located in the second groove (11).
3. The asphalt mixture freeze-thaw split test fixture of claim 2, wherein: The card block (6) and the insert block (5) are wedge-shaped.
4. The asphalt mixture freeze-thaw split test fixture of claim 2, wherein: The spring (3) consists of several springs.
5. The asphalt mixture freeze-thaw split test fixture of claim 2, wherein: The second groove (11) is provided with a sliding groove for the handle (2) to slide left and right, and the handle (2) and the sliding groove are in a left-right sliding fit.
6. The asphalt mixture freeze-thaw split test fixture of claim 1, wherein: The insert (5) is made of stainless steel.
7. The asphalt mixture freeze-thaw split test fixture of claim 1, wherein: The card block (6) is made of stainless steel.