Asphalt mixture density tester
By designing a asphalt mixture density measuring instrument including a shock absorber and a multi-cylinder measuring device, the problems of large vibration, short service life and inaccurate measurement data in the prior art are solved, and a higher service life and more accurate density measurement results are achieved.
Patent Information
- Application Number
- CN202420001499.7
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-01-02
- Publication Date
- 2025-03-14
- Estimated Expiration
- 2034-01-02
AI Technical Summary
The existing asphalt mixture density measurement device generates a large amount of vibration during use, resulting in damage to the instrument parts, reduced service life, and inaccurate single-cylinder measurement, unable to form an effective contrast, and poor rigor.
A asphalt mixture density measuring instrument including the instrument body, the feed cartridge, the fixing mechanism, the vacuum machine, the vent pipe, the shock absorbing mechanism and other components is designed. The shock absorption effect of the device is enhanced by the arrangement of telescopic columns, springs, slide shafts and support rods; the arrangement of two feed cartridges and ventilator tubes can avoid single-cylinder measurement and improve the accuracy of the measurement data.
It effectively reduces the vibration of the device, extends the service life, improves the accuracy of density measurement data, and enhances the rigor of the measurement results.
Smart Images
Figure CN222618449U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to an asphalt mixture density measuring instrument, relates to the technical field of asphalt mixture performance testing, and specifically relates to an asphalt mixture density measuring instrument. Background Art
[0002] Asphalt pavement is an asphalt mixture made by mixing stones and fillers of different particle sizes in a certain proportion with an appropriate amount of asphalt at an appropriate temperature, and then paving and rolling to form a flexible pavement with a certain porosity. Since the performance of asphalt pavement depends largely on the volume characteristics of asphalt mixture, the porosity of asphalt pavement is one of the key indicators for asphalt mixture design and construction acceptance. The porosity of asphalt pavement is mainly characterized by the porosity of asphalt mixture, asphalt saturation and mineral gap ratio, and the bulk density of aggregate is an important volume parameter of the porosity of asphalt mixture. The asphalt in the experiment should be carried out in 25℃ water.
[0003] The existing technology has the following problems:
[0004] When most devices are in use, they generate a lot of vibration, which can easily cause damage to the instrument parts inside the workbench. They cannot form a shock-absorbing effect on the workbench, which reduces the service life of the workbench. In addition, when measuring density, most of them use a single cylinder for measurement, which can easily lead to inaccurate measurement data, unable to form an effective comparison, and even worse rigor. Utility Model Content
[0005] The utility model provides an asphalt mixture density measuring instrument, which aims to solve the problem that most devices generate a lot of vibration when in use, which easily causes damage to instrument parts inside the workbench, cannot form a shock-absorbing effect on the workbench, and reduces the service life of the workbench. In addition, when measuring density, most of them use a single cylinder for measurement, which easily leads to inaccurate measurement data, cannot form effective comparison, and has poor rigor, so as to achieve the effect of improving the service life and the accuracy of measurement data.
[0006] In order to solve the above technical problems, the technical solution adopted by the utility model is:
[0007] An asphalt mixture density meter comprises an instrument body, wherein material containing barrels are movably connected to the left and right sides of the upper surface of the instrument body, a fixing mechanism is fixedly connected to the middle part of the upper surface of the instrument body, a vacuum machine is fixedly installed at the rear end of the instrument body, two ventilation pipes are fixedly connected to the output end of the vacuum machine, the bottom of each two ventilation pipes are movably connected to the upper surfaces of each two vacuum machines, shock absorbing mechanisms are fixedly connected to the four sides of the top of the instrument body, a pressure gauge is fixedly installed on the right side of the front end of the instrument body, a controller is fixedly installed in the middle part of the front end of the instrument body, and a switch is fixedly installed on the left side of the front end of the instrument body.
[0008] A further improvement of the technical solution of the utility model lies in that: the fixing mechanism includes a support column, a threaded rod is threadedly connected to the top inner wall of the support column, a spring 2 is slidably connected to the outer wall of the threaded rod, the bottom of the spring 2 is fixedly connected to the top of the support column, the outer wall of the threaded rod is rotatably connected to an extrusion plate, the top of the extrusion plate is fixedly connected to the top of the spring 2, the top of the threaded rod penetrates to the upper surface of the extrusion plate and is fixedly connected to a turning handle, the top of the material containing barrel is movably connected to a sealing cylinder cover, a ventilation valve is fixedly connected to the middle part of the upper surface of the sealing cylinder cover, the top outer walls of every two ventilation valves are respectively movably connected to the bottom of every two ventilation pipes, and the left and right sides of the bottom of the extrusion plate are respectively slidably connected to the upper surface of every two sealing cylinder covers.
[0009] A further improvement of the technical solution of the utility model is that: a fixing groove is provided on the top of the instrument body, a motor 1 is fixedly installed on the left and right sides of the bottom of the fixing groove, an output end of the motor 1 is fixedly connected to an electric wire, springs 1 are fixedly connected to the four sides of the top of the instrument body, a bearing plate is fixedly connected to the top of every four springs 1, the bottom of the support column penetrates to the top of the bearing plate and is fixedly connected to the bottom of the fixing groove, a bearing tube is fixedly connected to the left and right sides of the upper surface of the bearing plate, an annular groove is provided on the upper surface of the bearing tube, the inner wall of the annular groove is slidably connected to the bottom outer wall of the material holding tube, a partition is fixedly installed in the middle of the inner wall of the annular groove, and an annular copper tube is fixedly installed at the bottom of the partition. The top of the electric wire passes through the bottom of the annular groove and is fixedly connected to the bottom of the annular copper tube, motor 2 is symmetrically fixedly installed on the left and right sides of the bottom of the fixed groove, the output end of motor 2 is fixedly connected to a turntable, the front end left side of the turntable is rotatably connected to a turntable rod 1, the left and right sides of the inner wall of the fixed groove are respectively fixedly connected to turntable rod 2, the outer wall of turntable rod 2 is rotatably connected to a semi-annular gear, the rear end of every two semi-annular gears is rotatably connected to the top of every two turntable rods 1, the bottom of the bearing plate is fixedly connected to a fixed column, the inner wall of the fixed column is slidably connected to the outer wall of the support column, the left and right sides of the outer wall of the fixed column are respectively fixedly connected to calipers, and the outer walls of every two calipers are movably connected to the outer walls of every two semi-annular gears.
[0010] A further improvement of the technical solution of the utility model is that the shock absorbing mechanism includes a foot base, the inner wall of the foot base is slidably connected with a telescopic column, the top of the telescopic column is fixedly connected to the top of the instrument body, the bottom sides of the telescopic column are fixedly connected with spring four, the bottom of the spring four is fixedly connected to the upper surface of the inner wall of the foot base, the bottom of the telescopic column is provided with a groove, the left and right ends of the groove are fixedly connected with a support rod, the left and right sides of the outer wall of the support rod are respectively slidably connected with sliding shafts, the left side of the sliding shaft is fixedly connected with spring three, the left side of the spring three is fixedly connected to the left end of the groove, the inner wall of the spring three is slidably connected to the outer wall of the support rod, the internal rotation of the sliding shaft is connected with a rotating rod three, the bottom of the rotating rod three is fixedly connected with a rotating rod four, and the front and rear ends of the rotating rod four are respectively rotatably connected to the inner wall of the foot base.
[0011] Compared with the prior art, the utility model has the following beneficial effects:
[0012] 1. The utility model provides an asphalt mixture density measuring instrument. Through the arrangement of a telescopic column, a spring four, a sliding shaft, a support rod, a rotating rod three and a spring three, the shock absorbing effect of the enhanced device is achieved, thereby achieving the effects of reducing damage to parts and increasing service life. Furthermore, through the arrangement of two material containing barrels, a sealing barrel cover, a vent pipe and a bearing plate, single barrel measurement is avoided, thereby achieving the effect of improving the accuracy of the measurement data.
[0013] 2. The utility model provides an asphalt mixture density tester, which achieves the effect of enhancing the stability of the device through the arrangement of support columns, threaded rods, springs, extrusion plates and rotating handles, and ensures that the temperature of the asphalt mixture being measured is maintained at 25°C through the arrangement of bearing tubes, annular copper tubes and wires, thereby avoiding experimental errors. BRIEF DESCRIPTION OF THE DRAWINGS
[0014] Figure 1 It is a schematic diagram of the structure of the utility model;
[0015] Figure 2 It is a three-dimensional cross-sectional schematic diagram of the structural threaded rod of the utility model;
[0016] Figure 3 It is a three-dimensional cross-sectional schematic diagram of the structural wire of the utility model;
[0017] Figure 4 It is an enlarged schematic diagram of structure A of the utility model;
[0018] Figure 5 It is a three-dimensional cross-sectional schematic diagram of the structural telescopic column of the utility model;
[0019] Figure 6 It is an enlarged schematic diagram of structure B of the present utility model.
[0020] In the figure: 1. Instrument body; 11. Fixing slot; 12. Motor 1; 121. Electric wire; 13. Spring 1; 14. Carrying plate; 141. Carrying cylinder; 1411. Partition plate; 1412. Annular copper tube; 142. Fixing column; 1421. Caliper; 15. Motor 2; 151. Turntable; 152. Rotating rod 1; 153. Rotating rod 2; 154. Semi-annular gear; 2. Material cylinder; 21. Sealing cylinder cover; 2 2. Ventilation valve; 3. Fixing mechanism; 31. Support column; 32. Threaded rod; 33. Spring 2; 34. Extrusion plate; 35. Turning handle; 4. Vacuum machine; 5. Ventilation pipe; 6. Shock-absorbing mechanism; 61. Foot base; 62. Telescopic column; 621. Support rod; 622. Sliding shaft; 623. Spring 3; 624. Turning rod 3; 625. Turning rod 4; 63. Spring 4; 7. Barometer; 8. Controller; 9. Switch. DETAILED DESCRIPTION
[0021] In order to make the technical means, creative features, objectives and effects achieved by the present invention easy to understand, the present invention is further described below in conjunction with specific implementation methods.
[0022] like Figure 1-2As shown, the utility model provides an asphalt mixture density tester, including an instrument body 1, a material holding barrel 2 is movably connected to the left and right sides of the upper surface of the instrument body 1, a fixing mechanism 3 is fixedly connected to the middle of the upper surface of the instrument body 1, a vacuum machine 4 is fixedly installed at the rear end of the instrument body 1, two ventilation pipes 5 are fixedly connected to the output end of the vacuum machine 4, the bottom of each two ventilation pipes 5 is movably connected to the upper surface of each two vacuum machines 4, a shock absorbing mechanism 6 is fixedly connected to the top of the instrument body 1, a barometer 7 is fixedly installed on the right side of the front end of the instrument body 1, a controller 8 is fixedly installed in the middle of the front end of the instrument body 1, a switch 9 is fixedly installed on the left side of the front end of the instrument body 1, and the fixing mechanism 3 includes a support column 31 The top inner wall of the support column 31 is threadedly connected with a threaded rod 32, and the outer wall of the threaded rod 32 is slidably connected with a spring 2 33. The bottom of the spring 2 33 is fixedly connected to the top of the support column 31. The outer wall of the threaded rod 32 is rotatably connected with an extrusion plate 34. The top of the extrusion plate 34 is fixedly connected to the top of the spring 2 33. The top of the threaded rod 32 penetrates to the upper surface of the extrusion plate 34 and is fixedly connected with a rotating handle 35. The top of the material holding barrel 2 is movably connected with a sealing cylinder cover 21, and the middle part of the upper surface of the sealing cylinder cover 21 is fixedly connected with a vent valve 22. The top outer walls of each two vent valves 22 are movably connected to the bottom of each two vent pipes 5, and the left and right sides of the bottom of the extrusion plate 34 are slidably connected to the upper surface of each two sealing cylinder covers 21.
[0023] By placing the weighed asphalt mixture in the material holding barrel 2, placing the material holding barrel 2 one by one on the supporting barrel 141, and then covering the sealing cylinder cover 21 on the material holding barrel 2, and then rotating the extrusion plate 34 in the fixing mechanism 3 so that the extrusion plate 34 fits on the sealing cylinder cover 21, and then rotating the handle 35 to drive the threaded rod 32 to move downward in the support column 31 and squeeze the spring 2 33, so as to fix the sealing cylinder cover 21, and then inserting one end of the vent pipe 5 into the vent valve 22, and then turning on the switch 9 and starting the vacuum machine 4 by the controller 8 to evacuate the air in the material holding barrel 2, and always observing the barometer 7 to record the data.
[0024] like Figure 3-4As shown, the utility model provides an asphalt mixture density tester, a fixing groove 11 is provided on the top of the instrument body 1, a motor 12 is fixedly installed on the left and right sides of the bottom of the fixing groove 11, and an output end of the motor 12 is fixedly connected to an electric wire 121, springs 13 are fixedly connected to the top of the instrument body 1, and a bearing plate 14 is fixedly connected to the top of every four springs 13. The bottom of the support column 31 penetrates to the top of the bearing plate 14 and is fixedly connected to the bottom of the fixing groove 11. A bearing cylinder 141 is fixedly connected to the left and right sides of the upper surface of the bearing plate 14. An annular groove is provided on the upper surface of the bearing cylinder 141, and the inner wall of the annular groove is slidably connected to the bottom outer wall of the material holding barrel 2. A partition 1411 is fixedly installed in the middle of the inner wall of the annular groove, and an annular copper tube 1412 is fixedly installed at the bottom of the partition 1411. The electric wire 121 is fixedly connected to the output end of the motor 121. The top part passes through the bottom of the annular groove and is fixedly connected to the bottom of the annular copper tube 1412. Motor 2 15 is symmetrically fixedly installed on the left and right sides of the bottom of the fixed groove 11. The output end of motor 2 15 is fixedly connected to a turntable 151. The front end of the turntable 151 is rotatably connected to a rotating rod 152. The left and right sides of the inner wall of the fixed groove 11 are respectively fixedly connected to the rotating rod 2 153. The outer wall of the rotating rod 2 153 is rotatably connected to a semi-annular gear 154. The rear end of each two semi-annular gears 154 is rotatably connected to the top of each two rotating rods 152. The bottom of the carrying plate 14 is fixedly connected to a fixed column 142. The inner wall of the fixed column 142 is slidably connected to the outer wall of the support column 31. The left and right sides of the outer wall of the fixed column 142 are respectively fixedly connected to calipers 1421. The outer walls of each two calipers 1421 are movably connected to the outer walls of each two semi-annular gears 154.
[0025] By starting motor 12 to pass electricity through wire 121, the annular copper tube 1412 under the partition 1411 is heated to maintain 25°C in the material barrel 2, and then starting motor 2 15 in the fixed groove 11 to drive the turntable 151 to rotate, so that the rotating rod 152 drives the semi-annular gear 154 to rotate on the rotating rod 2 153, so that the semi-annular gear 154 drives the caliper 1421 to move up and down, so that the fixed column 142 and the bearing plate 14 move up and down on the support column 31, thereby vibrating the material barrel 2, and the spring 13 is used for buffering.
[0026] like Figure 5-6As shown, the utility model provides an asphalt mixture density tester, the shock absorbing mechanism 6 includes a foot base 61, the inner wall of the foot base 61 is slidably connected with a telescopic column 62, the top of the telescopic column 62 is fixedly connected to the top of the instrument body 1, the bottom of the telescopic column 62 is fixedly connected with springs 63 on both sides, the bottom of the spring 63 is fixedly connected to the upper surface of the inner wall of the foot base 61, a groove is provided at the bottom of the telescopic column 62, the left and right ends of the groove are fixedly connected with a support rod 621, the left and right sides of the outer wall of the support rod 621 are slidably connected with a sliding shaft 622 respectively, the left side of the sliding shaft 622 is fixedly connected with a spring 3 623, the left side of the spring 3 623 is fixedly connected to the left end of the groove, the inner wall of the spring 3 623 is slidably connected to the outer wall of the support rod 621, the inner part of the sliding shaft 622 is rotatably connected with a rotating rod 3 624, the bottom of the rotating rod 3 624 is fixedly connected with a rotating rod 4 625, and the front and rear ends of the rotating rod 4 625 are rotatably connected to the inner wall of the foot base 61 respectively;
[0027] If the vibration is too large, the telescopic column 62 in the shock absorbing mechanism 6 moves downward in the foot base 61 and squeezes the spring four 63, using the elastic force of the spring four 63 for rebound and buffering, and at the same time drives the rotating rod three 624 to rotate in the sliding shaft 622, and the rotating rod four 625 rotates in the foot base 61, so that the sliding shaft 622 moves on the support rod 621 and squeezes the spring three 623, and uses the elastic force of the spring three 623 to rebound, thereby reducing the vibration.
[0028] The following is a detailed description of the working principle of the asphalt mixture density tester.
[0029] like Figure 1-6As shown, when in use, first place the instrument body 1 on a horizontal plane, then place the weighed asphalt mixture in the material holding barrel 2, then place the material holding barrel 2 one by one on the supporting barrel 141, then cover the sealing barrel cover 21 on the material holding barrel 2, then rotate the extrusion plate 34 in the fixing mechanism 3 so that the extrusion plate 34 fits on the sealing barrel cover 21, then rotate the handle 35 to drive the threaded rod 32 to move downward in the support column 31 and squeeze the spring 2 33, so as to fix the sealing barrel cover 21, then insert one end of the vent pipe 5 into the vent valve 22, then turn on the switch 9 and start the vacuum machine 4 by the controller 8 to evacuate the air in the material holding barrel 2, and always observe the barometer 7 to record the data, then start the motor 12 to pass electricity through the wire 121 to heat the annular copper tube 1412 under the partition 1411, so that the material holding barrel 2 is maintained at 25°C, and then start the motor 2 15 in the fixing slot 11 The turntable 151 is driven to rotate, so that the rotating rod 152 drives the semi-annular gear 154 to rotate on the rotating rod 2 153, so that the semi-annular gear 154 drives the caliper 1421 to move up and down, so that the fixed column 142 and the bearing plate 14 move up and down on the supporting column 31, thereby vibrating the material holding barrel 2, and the spring 13 is used for buffering. If the vibration is too large, the telescopic column 62 in the shock absorbing mechanism 6 moves downward in the foot base 61 and squeezes the spring four 63, and uses the elastic force of the spring four 63 for rebound buffering, and at the same time drives the rotating rod three 624 to rotate in the sliding shaft 622, and the rotating rod four 625 rotates in the foot base 61, so that the sliding shaft 622 moves on the support rod 621 and squeezes the spring three 623, and uses the elastic force of the spring three 623 to rebound, thereby reducing the vibration and avoiding damage to parts. Finally, the data on the display is recorded and the density of the asphalt mixture is calculated.
[0030] The above generally describes the present invention in detail, but it is obvious to a person skilled in the art that some modifications or improvements can be made to the present invention. Therefore, modifications or improvements that do not deviate from the spirit of the present invention are within the scope of protection of the present invention.
Claims
1. An asphalt mixture density measuring instrument, comprising an instrument body (1), characterized in that: The left and right sides of the upper surface of the instrument body (1) are movably connected to a material holding barrel (2), the middle part of the upper surface of the instrument body (1) is fixedly connected to a fixing mechanism (3), the rear end of the instrument body (1) is fixedly installed with a vacuum machine (4), the output end of the vacuum machine (4) is fixedly connected with two ventilation pipes (5), the bottom of each two ventilation pipes (5) is movably connected to the upper surface of each two vacuum machines (4), the top of the instrument body (1) is fixedly connected with a shock absorbing mechanism (6), the front right side of the instrument body (1) is fixedly installed with a pressure gauge (7), the middle part of the front end of the instrument body (1) is fixedly installed with a controller (8), and the left side of the front end of the instrument body (1) is fixedly installed with a switch (9).
2. The asphalt mixture density tester according to claim 1, characterized in that: The fixing mechanism (3) comprises a support column (31), the top inner wall of the support column (31) is threadedly connected to a threaded rod (32), the outer wall of the threaded rod (32) is slidably connected to a second spring (33), the bottom of the second spring (33) is fixedly connected to the top of the support column (31), the outer wall of the threaded rod (32) is rotatably connected to an extrusion plate (34), the top of the extrusion plate (34) is fixedly connected to the top of the second spring (33), and the top of the threaded rod (32) penetrates to the upper surface of the extrusion plate (34) and is fixedly connected to a rotating handle (35).
3. The asphalt mixture density measuring instrument according to claim 2, characterized in that: The top of the material containing barrel (2) is movably connected to a sealing barrel cover (21), the middle of the upper surface of the sealing barrel cover (21) is fixedly connected to a ventilation valve (22), the top outer walls of each two ventilation valves (22) are movably connected to the bottom of each two ventilation pipes (5), and the left and right sides of the bottom of the extrusion plate (34) are slidably connected to the upper surfaces of each two sealing barrel covers (21).
4. The asphalt mixture density measuring instrument according to claim 2, characterized in that: A fixing groove (11) is provided on the top of the instrument body (1), and a motor (12) is fixedly installed on the left and right sides of the bottom of the fixing groove (11), and an output end of the motor (12) is fixedly connected to an electric wire (121). Springs (13) are fixedly connected to the four sides of the top of the instrument body (1), and a supporting plate (14) is fixedly connected to the top of every four springs (13). The bottom of the support column (31) passes through the top of the supporting plate (14) and is fixedly connected to the bottom of the fixing groove (11).
5. The asphalt mixture density tester according to claim 4, characterized in that: The left and right sides of the upper surface of the supporting plate (14) are respectively fixedly connected with a supporting tube (141), the upper surface of the supporting tube (141) is provided with an annular groove, the inner wall of the annular groove is slidably connected with the bottom outer wall of the material containing tube (2), a partition (1411) is fixedly installed in the middle of the inner wall of the annular groove, and an annular copper tube (1412) is fixedly installed at the bottom of the partition (1411), and the top of the electric wire (121) passes through the bottom of the annular groove and is fixedly connected with the bottom of the annular copper tube (1412).
6. The asphalt mixture density tester according to claim 4, characterized in that: Motor 2 (15) is symmetrically fixedly installed on the left and right sides of the bottom of the fixed groove (11); the output end of the motor 2 (15) is fixedly connected to a rotating disk (151); the left side of the front end of the rotating disk (151) is rotatably connected to a rotating rod 1 (152); the left and right sides of the inner wall of the fixed groove (11) are respectively fixedly connected to rotating rod 2 (153); the outer wall of the rotating rod 2 (153) is rotatably connected to a semi-annular gear (154); the rear ends of every two semi-annular gears (154) are rotatably connected to the tops of every two rotating rods 1 (152); the bottom of the supporting plate (14) is fixedly connected to a fixed column (142); the inner wall of the fixed column (142) is slidably connected to the outer wall of the supporting column (31); the left and right sides of the outer wall of the fixed column (142) are respectively fixedly connected to calipers (1421); the outer walls of every two calipers (1421) are movably connected to the outer walls of every two semi-annular gears (154).
7. The asphalt mixture density tester according to claim 1, characterized in that: The shock absorbing mechanism (6) comprises a foot base (61), the inner wall of the foot base (61) is slidably connected to a telescopic column (62), the top of the telescopic column (62) is fixedly connected to the top of the instrument body (1), and the bottom of the telescopic column (62) is fixedly connected to spring four (63) on both sides, and the bottom of the spring four (63) is fixedly connected to the upper surface of the inner wall of the foot base (61).
8. The asphalt mixture density tester according to claim 7, characterized in that: A groove is provided at the bottom of the telescopic column (62), and a support rod (621) is fixedly connected to the left and right ends of the groove. The left and right sides of the outer wall of the support rod (621) are slidably connected with sliding shafts (622), and the left side of the sliding shaft (622) is fixedly connected with a spring three (623), and the left side of the spring three (623) is fixedly connected to the left end of the groove. The inner wall of the spring three (623) is slidably connected to the outer wall of the support rod (621). The interior of the sliding shaft (622 is rotatably connected with a rotating rod three (624), and the bottom of the rotating rod three (624) is fixedly connected with a rotating rod four (625), and the front and rear ends of the rotating rod four (625) are rotatably connected to the inner wall of the foot base (61).