Spindle quick-dismounting device for adhesive force and drawing strength detection

Abstract

The utility model discloses a spindle quick-release device for adhesive force and drawing strength detection, which is suitable for being mounted in a spindle in a quick sleeve and comprises a supporting cylinder body covering the outside of a detection cylinder body, and a pair of first threaded holes are formed in the side wall of the supporting cylinder body. A positioning screw used for being arranged in the operation hole in a penetrating mode is connected into the first threaded hole in a screwed mode, a pushing rod is arranged at the top of the supporting barrel in a penetrating mode, and the pushing rod is provided with a pushing handle located outside the supporting barrel and a pushing face located in the supporting barrel and connected with the hydraulic pressure head. The quick sleeve is ingenious in structure, low in cost and convenient to carry, solves the problem that the spindle in the quick sleeve is difficult to take and unload in the asphalt adhesive force drawing strength detection process, improves the adhesive force drawing strength detection efficiency, and meanwhile avoids safety accidents caused by improper manual operation.

Description

Technical Field

[0001] This utility model relates to the field of road asphalt adhesion pull-out testing technology, and in particular to a spindle quick-release device for adhesion pull-out strength testing. Background Technology

[0002] The asphalt adhesion pull-out test is a crucial method for evaluating asphalt performance, and its application value cannot be underestimated. Firstly, this test can accurately measure the core properties of asphalt, such as viscosity, hardness, and elasticity, providing data support for a comprehensive understanding of asphalt performance. Secondly, the pull-out test can effectively assess the quality of asphalt mixtures and their raw materials, promptly identifying and addressing potential quality problems to ensure the safety and stability of road construction. Furthermore, this test can predict the durability and long-term performance of asphalt, providing a scientific basis for pavement construction decisions. Finally, comparing the test results with standards can verify whether the asphalt performance meets the standards, further controlling construction quality. In summary, the asphalt pull-out test plays a vital role in asphalt performance evaluation, especially in ensuring project quality, quality control, prevention and maintenance, material performance evaluation, and safety and durability assessment, making it an indispensable part of road construction. Currently, the American DeFelsko fully automated digital display pull-out adhesion tester is widely used in the adhesion pull-out strength testing of asphalt binders. After the pull-out test is completed, the test spindle needs to be removed from the quick-release sleeve. However, due to the presence of asphalt binder between the spindle and the sleeve, removal is difficult. Usually, the testers use their hands or tools such as screwdrivers to pry it open, which undoubtedly adds a lot of inconvenience to the indoor and outdoor testing process, reduces testing efficiency, and also brings operational safety hazards. Summary of the Invention

[0003] To address the difficulty of removing and unloading spindles from the sleeve during asphalt adhesion pull-out strength testing, this invention provides a compact, portable spindle quick-release device for adhesion pull-out strength testing that enables rapid and safe removal of spindles from the sleeve.

[0004] The quick-release device for testing the adhesion pull-out strength of a spindle according to this utility model is suitable for installing a spindle in a quick-release sleeve. The quick-release sleeve includes a testing cylinder, in which a hydraulic rod is provided. The top of the hydraulic rod passes through the testing cylinder and is connected to a hydraulic pressure head. The bottom of the hydraulic rod is provided with a quick connector for connecting the spindle. A pair of operating holes are provided on the side wall of the testing cylinder. The operating holes are symmetrically arranged on both sides of the testing cylinder and correspond to the positions of the quick connectors. The quick-release device includes a support cylinder that covers the outside of the testing cylinder. A pair of first threaded holes are provided on the side wall of the support cylinder. A positioning screw for passing through the operating hole is screwed into the first threaded hole. A push rod is provided through the top of the support cylinder. The push rod has a push handle located outside the support cylinder and a push surface located inside the support cylinder that is connected to the hydraulic pressure head.

[0005] The upper edge of the operating hole is higher than the quick connector, and the two positioning screws are arranged in a straight line opposite each other in the horizontal direction, and are respectively connected to the upper edge of the two operating holes.

[0006] The main body of the support cylinder is a cylindrical structure with a diameter larger than that of the detection cylinder, and a necking structure is connected to the top of the main body.

[0007] The bottom of the main body is an open structure, and the lower edge of the main body is set higher than the detection cylinder.

[0008] The necking structure is provided with a second threaded hole, and the push rod is a threaded rod that is adapted to the second threaded hole.

[0009] The push rod is coaxially arranged with the hydraulic head and hydraulic rod.

[0010] The quick-release device for the spindle used in adhesion pull-out strength testing provided by this utility model first fixes the testing support cylinder and the testing cylinder together through two positioning screws. At this time, the push rod is facing the hydraulic rod. Then, the push rod is pushed / twisted to make the hydraulic rod move down, thereby realizing the quick separation of the spindle and the quick sleeve.

[0011] This invention employs a support cylinder with a large diameter and two positioning screws, enabling flexible operation of testing sleeves of different lengths and thicknesses. It is convenient to operate, quick to position, and provides a secure connection. Simultaneously, by screwing on the push rod or using external force to push the push rod, the hydraulic rod can be easily pushed to separate the spindle from the quick-release sleeve without damaging it. This invention features a clever structure, low cost, and easy portability, solving the problem of difficult spindle removal and removal in the quick-release sleeve during asphalt adhesion pull-out strength testing. It enables rapid pushing of the quick-release sleeve, facilitating the removal and removal of the testing spindle by testing personnel, improving the efficiency of adhesion pull-out strength testing, and avoiding safety accidents caused by improper human operation. Attached Figure Description

[0012] Figure 1 This is a schematic diagram of the structure of this utility model.

[0013] Figure 2 This is a schematic diagram of the structure of this utility model in conjunction with the quick-release sleeve.

[0014] Figure 3 yes Figure 2 A schematic diagram of the structure of the medium-speed sleeve.

[0015] Figure 4 yes Figure 3 The left view. Detailed Implementation

[0016] The embodiments of this utility model will be described in detail below with reference to the accompanying drawings. These embodiments are implemented based on the technical solution of this utility model and provide detailed implementation methods and specific operation processes. However, the protection scope of this utility model is not limited to the following embodiments.

[0017] like Figure 1-4As shown, the quick-release device for testing the adhesion pull-out strength of a spindle according to this utility model is suitable for installing a spindle in a quick-release sleeve 1. The quick-release sleeve 1 includes a testing cylinder 11, inside which a hydraulic rod 12 is installed. The top of the hydraulic rod 12 penetrates the testing cylinder 11 and is connected to a hydraulic pressure head 13. A quick connector 14 for connecting the spindle is provided at the bottom of the hydraulic rod 12. A pair of operating holes 15 are provided on the side wall of the testing cylinder 11, symmetrically arranged on both sides of the testing cylinder 11 and corresponding to the positions of the quick connector 14. Normally, the upper edge of the operating holes 15 is higher than the quick connector 14. The quick-release device according to this utility model includes a support cylinder 21 covering the outside of the testing cylinder 11. The main body of the support cylinder 21 is a cylindrical structure with a diameter larger than that of the testing cylinder 11, and a necked structure is connected to the top of the main body. The bottom of the main body of the support cylinder 21 is open, and a pair of first threaded holes 22 are provided on its side wall. Positioning screws 23 for passing through the operating holes 15 are screwed into the first threaded holes 22. The two positioning screws 23 are arranged horizontally in a straight line. When the support cylinder 21 is fixedly connected to the detection cylinder 11, the positioning screws 23 are respectively connected to the upper edges of the two operating holes 15. At this time, the lower edge of the main body of the support cylinder 21 is higher than the lower edge of the detection cylinder 11. A push rod 24 is provided through the top of the support cylinder 21. The push rod 24 has a push handle 25 located outside the support cylinder 21 and a push surface located inside the support cylinder 21 that connects to the hydraulic pressure head 13. Normally, a second threaded hole is provided on the constricted structure of the support cylinder 21. The push rod 24 uses a threaded rod adapted to the second threaded hole, and can be raised and lowered by screwing. Alternatively, the push rod 24 can be a smooth axis, allowing for lifting and lowering actions by external force pushing the push rod 24. Preferably, the push rod 24 is coaxially arranged with the hydraulic head 13 and the hydraulic rod 12.

[0018] In use, first place the support cylinder 21 described in this utility model above the quick sleeve 1. Then, adjust the length of the positioning screw 23 according to the height of the quick sleeve 1, so that the end of the positioning screw 23 contacts and fixes the upper edge of the operating hole 15 of the detection cylinder 11. Then, rotate the push handle 25 by hand so that the bottom of the push rod 24 contacts the hydraulic head 13 of the hydraulic rod 12. Then, rotate the push handle 25 again to push the hydraulic head 13 and the hydraulic rod 12 downward, thereby disengaging the spindle from the quick connector 14 and pushing the spindle out from the bottom of the quick sleeve 1, completing the pushing operation. Afterward, rotate the push handle 25 in the opposite direction and rotate the positioning screw 23 at the same time to separate the support cylinder 21 from the quick sleeve 1 for the next use.

[0019] It should be noted that in the description of this utility model, terms such as "front", "rear", "left", "right", "vertical", "horizontal", "inner", and "outer" indicating orientation or positional relationship are based on the orientation or positional relationship shown in the accompanying drawings. They 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. Therefore, they should not be construed as limitations on this utility model.

Claims

1. A quick-release device for spindles used in adhesion pull-out strength testing, suitable for installation in a quick-release sleeve, the quick-release sleeve comprising a testing cylinder, a hydraulic rod disposed within the testing cylinder, the top of the hydraulic rod penetrating the testing cylinder and connected to a hydraulic pressure head, and a quick connector for connecting the spindle disposed at the bottom of the hydraulic rod; a pair of operating holes are provided on the side wall of the testing cylinder, the operating holes being symmetrically arranged on both sides of the testing cylinder and corresponding to the positions of the quick connectors, characterized in that: The quick-release device includes a support cylinder that covers the outside of the detection cylinder. A pair of first threaded holes are provided on the side wall of the support cylinder. A positioning screw for passing through the operation hole is screwed into the first threaded hole. A push rod is provided through the top of the support cylinder. The push rod has a push handle located outside the support cylinder and a push surface located inside the support cylinder that is in contact with the hydraulic head.

2. The quick-release device for spindles used in adhesion pull-out strength testing according to claim 1, characterized in that: The upper edge of the operating hole is higher than the quick connector, and the two positioning screws are arranged in a straight line opposite each other in the horizontal direction, and are respectively connected to the upper edge of the two operating holes.

3. The quick-release device for spindles used in adhesion pull-out strength testing according to claim 1, characterized in that: The main body of the support cylinder is a cylindrical structure with a diameter larger than that of the detection cylinder, and a necking structure is connected to the top of the main body.

4. The quick-release device for spindles used in adhesion pull-out strength testing according to claim 3, characterized in that: The bottom of the main body is an open structure, and the lower edge of the main body is set higher than the detection cylinder.

5. The quick-release device for spindles used in adhesion pull-out strength testing according to claim 3, characterized in that: The necking structure is provided with a second threaded hole, and the push rod is a threaded rod that is adapted to the second threaded hole.

6. The quick-release device for spindles used in adhesion pull-out strength testing according to claim 1, characterized in that: The push rod is coaxially arranged with the hydraulic head and hydraulic rod.

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