Asphalt elongation testing device
By using telescopic springs and laser rangefinders in the asphalt elongation test device, the problem of unstable fall of asphalt samples in traditional equipment is solved, and a more stable and accurate elongation test is achieved.
Patent Information
- Application Number
- CN202420614527.2
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-03-28
- Publication Date
- 2025-03-07
- Estimated Expiration
- 2034-03-28
AI Technical Summary
When used, the traditional asphalt extension measuring equipment is used, due to the short length of the limit rod on the fixed plate and the moving plate, and when stretching in water, the buoyancy of the water causes the asphalt sample to be unstable, which is easy to fall off during the moving plate, resulting in the failure of the test.
A bitumen extension test device is designed. By setting a telescopic spring and a telescopic rod in the inner cavity of the limiting plate, the arc plate is pressed against the outer wall of the limiting rod by using the function of the telescopic spring, thereby fixing the limiting plate and ensuring the stability of the asphalt sample. At the same time, laser rangefinder is used to measure and feedback the distance between the mobile plate and the fixed plate in real time, which is convenient for operator control.
It effectively avoids the problem of asphalt samples falling off during tensile process, ensures the stability and accuracy of the test, and improves the success rate of the elongation test.
Smart Images
Figure CN222579855U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of asphalt testing equipment, in particular to an asphalt elongation testing device. Background Art
[0002] Asphalt is a liquid with high viscosity, which is often used as a cementing material for pavement structures in road engineering. The ductility of asphalt refers to the maximum length that a unit volume of asphalt can stretch. Different sections of roads with different requirements have different ductility requirements for asphalt. Therefore, the ductility test of asphalt is particularly important. The asphalt elongation tester is referred to as the asphalt elongation tester, also known as the asphalt elongation tester. It is a special instrument suitable for measuring the elongation of materials such as road petroleum asphalt, polymer modified asphalt, liquid petroleum asphalt distillation residue and emulsified asphalt distillation residue.
[0003] When using traditional asphalt elongation measuring equipment, the prepared asphalt sample is directly placed on the two ends of the fixed plate and the movable plate, and then the asphalt sample is stretched during the movement of the movable plate. Since the limit rods on the fixed plate and the movable plate are short and stretched in water, the water has a certain buoyancy, which causes the sample to be unstable. As a result, the two ends of the asphalt sample will fall off the fixed plate and the movable plate during the movement of the movable plate, resulting in test failure. Utility Model Content
[0004] In view of the deficiencies in the prior art, the utility model provides an asphalt elongation testing device, which has the advantages of good stability and easy use, and solves the problems raised by the above-mentioned background technology.
[0005] The utility model provides the following technical solutions: an asphalt elongation testing device, comprising an equipment body, an operating table fixedly installed on the outer wall of the equipment body, a slide groove is opened in the inner cavity of the equipment body, a driving motor is fixedly installed in the inner cavity of the equipment body, a power output shaft of the driving motor is fixedly installed with a screw, a fixed block is fixedly installed in the inner cavity of the equipment body, a moving block is slidably connected to the inner cavity of the slide groove, a limiting rod is fixedly installed on the top of the fixed block, an asphalt sample is movably sleeved on the outer wall of the limiting rod, a limiting plate is movably sleeved on the outer wall of the limiting rod, a fixing cylinder is fixedly installed on the inner wall of the limiting plate, a telescopic spring is installed in the inner cavity of the fixing cylinder, a telescopic rod is movably sleeved on the inner cavity of the fixing cylinder, an arc plate is fixedly installed on the outer wall of the telescopic rod, and a laser rangefinder is fixedly installed on the top of the limiting plate.
[0006] As a preferred technical solution of the utility model: the inner wall of the moving block is provided with an internal thread, and the internal thread of the inner wall of the moving block is threadedly connected with the outer wall of the screw.
[0007] As a preferred technical solution of the utility model: the shape and size of the outer wall of the moving block matches the shape and size of the inner wall of the sliding groove, and a limiting rod is also installed on the outer wall of the moving block.
[0008] As a preferred technical solution of the utility model: the two ends of the telescopic spring are respectively connected to the inner wall of the fixed tube and the outer wall of the telescopic rod, and the telescopic spring is made of high carbon steel.
[0009] As a preferred technical solution of the utility model: there are two limit plates, and the two limit plates are respectively arranged on the top of the fixed block and the moving block.
[0010] As a preferred technical solution of the utility model: the operating table is electrically connected to the driving motor and the laser rangefinder respectively, and an anti-slip pad is installed on the outer wall of the arc plate on the side close to the limit rod.
[0011] Compared with the prior art, the utility model has the following beneficial effects:
[0012] 1. The asphalt elongation test device has a limit plate, and a telescopic spring and a telescopic rod are arranged in the inner cavity of the limit plate. Under the action of the telescopic spring, the telescopic rod pushes the arc plate to be close to the outer wall of the limit rod, so that the limit plate is fixed on the outer wall of the limit rod, and then the asphalt sample is fixed under the action of the limit plate, thereby preventing the two ends of the asphalt sample from falling off from the moving plate and the fixed plate during the movement of the moving plate, thereby better performing the extension experiment.
[0013] 2. The asphalt elongation test device uses a laser rangefinder arranged on the outer wall of the limit plate. When the movable plate rotates with the rotation of the screw, the distance between the movable plate and the fixed plate will change. At this time, the distance between the movable plate and the fixed plate can be measured by the laser rangefinder, and the information can be fed back to the operating table in real time, so that it is more convenient for users to control the distance between the movable plate and the fixed plate. BRIEF DESCRIPTION OF THE DRAWINGS
[0014] Figure 1 It is a schematic diagram of the three-dimensional structure of the utility model;
[0015] Figure 2 This is a schematic diagram of the cross-sectional structure of the device body of the utility model;
[0016] Figure 3 This is a schematic diagram of the structure of the mobile block of the utility model;
[0017] Figure 4 This is a schematic diagram of the structure of the fixed block of the utility model;
[0018] Figure 5 For this utility model Figure 4Enlarged structural diagram at A in the middle.
[0019] In the figure: 1. Equipment body; 2. Operating table; 3. Slide; 4. Driving motor; 5. Screw; 6. Moving block; 7. Fixed block; 8. Limit rod; 9. Asphalt sample; 10. Limit plate; 11. Fixed cylinder; 12. Telescopic spring; 13. Telescopic rod; 14. Arc plate; 15. Laser rangefinder. DETAILED DESCRIPTION
[0020] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.
[0021] See also Figure 1-5 A asphalt elongation testing device comprises an equipment body 1, an operating table 2 is fixedly installed on the outer wall of the equipment body 1, a slide groove 3 is opened in the inner cavity of the equipment body 1, a driving motor 4 is fixedly installed in the inner cavity of the equipment body 1, a screw 5 is fixedly installed on the power output shaft of the driving motor 4, a fixed block 7 is fixedly installed in the inner cavity of the equipment body 1, a moving block 6 is slidably connected in the inner cavity of the slide groove 3, a limiting rod 8 is fixedly installed on the top of the fixed block 7, an asphalt sample 9 is movably sleeved on the outer wall of the limiting rod 8, a limiting plate 10 is movably sleeved on the outer wall of the limiting rod 8, a fixed cylinder 11 is fixedly installed on the inner wall of the limiting plate 10, a telescopic spring 12 is installed in the inner cavity of the fixed cylinder 11, a telescopic rod 13 is movably sleeved on the inner cavity of the fixed cylinder 11, an arc plate 14 is fixedly installed on the outer wall of the telescopic rod 13, and a laser rangefinder 15 is fixedly installed on the top of the limiting plate 10.
[0022] By setting the fixed block 7 and the movable block 6 in the inner cavity of the equipment body 1, when the asphalt needs to be subjected to an elongation test, it is only necessary to pass the two ends of the asphalt sample 9 through the limit rods 8 on the top of the fixed block 7 and the movable block 6 respectively. At this time, the movable block 6 will move under the action of the driving motor 4 and the screw 5, and the asphalt sample can be stretched.
[0023] In a preferred embodiment, the inner wall of the moving block 6 is provided with an internal thread, and the internal thread of the inner wall of the moving block 6 and the outer wall of the screw rod 5 are threadedly connected to each other.
[0024] By passing the outer wall of the screw 5 through the inner cavity of the moving block 6 and threading the outer wall of the screw 5 with the inner wall of the moving block 6, the moving block 6 can be moved along the inner wall of the slide 3 under the action of the driving motor 4 and the screw 5, thereby achieving a stretching effect on the asphalt sample 9.
[0025] In a preferred embodiment, the shape and size of the outer wall of the moving block 6 matches the shape and size of the inner wall of the sliding groove 3 , and a limiting rod 8 is also installed on the outer wall of the moving block 6 .
[0026] By means of the moving block 6 which is slidably connected to the inner wall of the slide groove 3, when the screw 5 rotates under the action of the driving motor 4, the outer wall of the moving block 6 will be blocked by the outer wall of the slide groove 3, so that the moving block 6 can only move back and forth along the outer wall of the screw 5, thereby achieving the stretching of the asphalt sample.
[0027] In a preferred embodiment, two ends of the telescopic spring 12 are respectively connected to the inner wall of the fixing tube 11 and the outer wall of the telescopic rod 13 , and the telescopic spring 12 is made of high carbon steel.
[0028] By setting a telescopic spring 12 in the inner cavity of the fixed tube 11, and connecting the two ends of the telescopic spring 12 to the outer walls of the fixed tube 11 and the telescopic rod 13 respectively, the telescopic rod 13 can move outward under the action of the telescopic spring 12, so that the arc plate 14 can fit with the outer wall of the limiting rod 8. At this time, the limiting plate 10 cannot move on the outer wall of the limiting rod 8, so the asphalt sample 9 can be fixed well.
[0029] In a preferred embodiment, there are two limit plates 10 , and the two limit plates 10 are respectively arranged on the top of the fixed block 7 and the movable block 6 .
[0030] By respectively setting two limit plates 10 on the top of the fixed block 7 and the movable block 6, the two limit plates 10 can respectively limit the two ends of the asphalt sample 9, so that the asphalt sample 9 can stably stay on the top of the fixed block 7 and the movable block 6 when being stretched, thereby obtaining more accurate test data.
[0031] In a preferred embodiment, the operating platform 2 is electrically connected to the driving motor 4 and the laser rangefinder 15 respectively, and an anti-slip pad is installed on the outer wall of the arc plate 14 on the side close to the limiting rod 8.
[0032] By electrically connecting the drive motor 4 and the laser rangefinder 15 with the operating table 2, the drive motor 4 is controlled under the action of the operating table 2, so that the drive motor 4 drives the rotation of the screw 5 and drives the movement of the moving block 6, and the laser rangefinder 15 installed on the top of the limit plate 10 can realize the distance measurement function. When the moving block 6 moves, the laser rangefinder 15 on the top of the moving block 6 can illuminate each other with the laser rangefinder 15 on the top of the fixed block 7, so as to obtain more accurate data.
[0033] Working principle: During the use of the above-mentioned equipment, when the equipment is needed to perform a tensile test on the asphalt sample 9, the arc plate 14 is first pushed inward to make the outer wall of the arc plate 14 leave the outer wall of the limit rod 8, and then the limit plate 10 is completely removed from the outer wall of the limit rod 8. At this time, the two ends of the asphalt sample 9 can be placed on the top of the fixed block 7 and the movable block 6 respectively. At this time, the outer wall of the limit rod 8 will pass through the inner cavity of the asphalt sample 9, and then the arc plate 14 can be pushed inward again to insert the limit plate 10 into the outer wall of the limit rod 8, and the limit plate 10 is continuously pushed until the bottom of the limit plate 10 is aligned with the bottom of the asphalt sample 9. The top is in contact, and the arc plate 14 can be released at this time. The arc plate 14 will be tightly attached to the outer wall of the limit rod 8 under the action of the telescopic spring 12, so as to fix the limit plate 10. At this time, the limit plate 10 can no longer move up and down on the outer wall of the limit rod 8, so that the asphalt sample 9 is locked under the action of the limit plate 10, and then the driving motor 4 is started through the operating table 2 to rotate the screw 5. At this time, the moving block 6 will move along the outer wall of the screw 5, and the asphalt sample 9 can be stretched. The stretched length is measured in real time under the action of the laser rangefinder 15, and timely feedback is sent to the operating table 2, which is convenient for the operator to observe.
[0034] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.
Claims
1. An asphalt elongation test device, comprising a device body (1), characterized in that: The outer wall of the equipment body (1) is fixedly equipped with an operating table (2), the inner cavity of the equipment body (1) is provided with a slide groove (3), the inner cavity of the equipment body (1) is fixedly equipped with a drive motor (4), the power output shaft of the drive motor (4) is fixedly equipped with a screw (5), the inner cavity of the equipment body (1) is fixedly equipped with a fixed block (7), the inner cavity of the slide groove (3) is slidably connected with a moving block (6), the top of the fixed block (7) is fixedly equipped with a limit rod (8), and the limit rod (8) is fixedly equipped with a movable block (6) in ... An asphalt sample (9) is movably sleeved on the outer wall of the rod (8), a limit plate (10) is movably sleeved on the outer wall of the limit rod (8), a fixed cylinder (11) is fixedly mounted on the inner wall of the limit plate (10), a telescopic spring (12) is installed in the inner cavity of the fixed cylinder (11), a telescopic rod (13) is movably sleeved on the inner cavity of the fixed cylinder (11), an arc plate (14) is fixedly mounted on the outer wall of the telescopic rod (13), and a laser rangefinder (15) is fixedly mounted on the top of the limit plate (10).
2. The asphalt elongation test device according to claim 1, characterized in that: The inner wall of the moving block (6) is provided with an internal thread, and the internal thread of the inner wall of the moving block (6) and the outer wall of the screw rod (5) are threadedly connected to each other.
3. The asphalt elongation test device according to claim 1, characterized in that: The shape and size of the outer wall of the moving block (6) matches the shape and size of the inner wall of the sliding groove (3), and a limiting rod (8) is also installed on the outer wall of the moving block (6).
4. The asphalt elongation testing device according to claim 1, characterized in that: The two ends of the telescopic spring (12) are respectively connected to the inner wall of the fixed tube (11) and the outer wall of the telescopic rod (13), and the telescopic spring (12) is made of high carbon steel.
5. The asphalt elongation testing device according to claim 1, characterized in that: There are two limit plates (10), and the two limit plates (10) are respectively arranged on the top of the fixed block (7) and the moving block (6).
6. The asphalt elongation test device according to claim 1, characterized in that: The operating platform (2) is electrically connected to the driving motor (4) and the laser rangefinder (15) respectively, and an anti-slip pad is installed on the outer wall of the arc plate (14) on the side close to the limiting rod (8).