Asphalt mixture stability tester

Abstract

The utility model discloses an asphalt mixture stability tester, which comprises a support framework, a pressure detector, a pressure head, a driving component and a fixed tray, the driving component is arranged in the middle of the bottom end of the support framework, a fixed frame is transversely arranged at the top end of the driving component, and the fixed tray is arranged above the fixed frame. The fixing tray is fixedly connected with the top end of the driving assembly, the pressing head is slidably connected to the fixing tray, the pressure detector is arranged in the middle of the top end of the supporting framework, the detection end of the pressure detector corresponds to the top end of the pressing head, and a groove is formed in the fixing tray. Sliding blocks corresponding to the sliding guide rails are arranged on the two side walls of the bottom of the pressing head. The sliding blocks on the two side walls of the bottom of the pressing head are used in cooperation with the sliding guide rails on the fixed tray, the pressing head can be conveniently moved, the pressing head can be rapidly assembled and disassembled on the fixed tray, and work efficiency is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of asphalt testing, and specifically relates to an asphalt mixture stability tester. Background Art

[0002] Asphalt mixture is a composite material and has wide applications in fields such as road engineering. Based on the usage requirements of asphalt mixture, it is necessary to conduct quality inspections on asphalt mixture, that is, to measure the stability, failure load, and anti-deformation ability of asphalt mixture. When conducting the asphalt mixture stability test, the deformation of the asphalt mixture is often caused by applying pressure to the asphalt mixture, resulting in the dropping of asphalt debris or even the overall crushing and dropping of the asphalt mixture. At the same time, when moving the pressure head to the rising tray during the detection process, it is necessary to align the test block at the top of the pressure head with the pressure tester, and the pressure head often needs to be moved multiple times. However, because the pressure head is heavy and the structure of the detection instrument is relatively complex, it is rather troublesome to move the pressure head.

[0003] The asphalt mixture stability tester disclosed in Chinese Patent CN202121228759.7 includes a stability tester body; the stability tester body has a pressure head for loading specimens and a tray for carrying the pressure head; a plurality of universal wheels are fixedly connected to the side wall of the pressure head; the bearing surface of the tray is for the universal wheels to abut against; the tray is provided with a first magnetic block for attracting and engaging with the side wall of the pressure head; a receiving groove for inserting the first magnetic block is opened on the bearing surface of the tray; when the first magnetic block attracts and engages with the side wall of the pressure head, a part of the first magnetic block exposes outside the receiving groove; the tray is provided with a limiting mechanism for limiting the attraction and engagement between the first magnetic block and the pressure head. This utility model facilitates the movement of the pressure head in the tray through the universal wheels, and uses the first magnetic block and the second magnetic block to determine the accurate position of the pressure head, improving the moving efficiency of the pressure head by the experimenter. This utility model cannot block and collect the debris dropped by the asphalt mixture during the test, and it is easy to fall into the magnetic block or the universal wheels, resulting in problems such as reduced moving efficiency or inaccurate positioning, and it cannot limit the position of the asphalt mixture in the pressure head, and cannot ensure uniform stress of the asphalt mixture.

[0004] The disclosure of the above background art content is only used to assist in understanding the concept and technical solution of the present utility model, and it does not necessarily belong to the prior art of this patent application. Without clear evidence indicating that the above content was publicly available on the filing date of this patent application, the above background art should not be used to evaluate the novelty and creativity of this application. Content of the Utility Model

[0005] The main purpose of the present utility model is to overcome the defects existing in the above-mentioned background technology, and to provide a stability tester for asphalt mixtures. The present utility model can meet the actual measurement requirements of asphalt mixtures, realize the quick loading and unloading of the indenter loaded with asphalt mixtures, and at the same time, through the mutual cooperation of the sliding limiter and the limiting plate, realize the collection of asphalt debris generated during the measurement of asphalt mixtures while restricting the position of the asphalt mixtures, reduce the workload after measurement, and improve the measurement efficiency.

[0006] To achieve the above object, a stability tester for asphalt mixtures proposed by the present utility model includes a support skeleton, a pressure detector, an indenter, a driving component and a fixed tray which are arranged on the support skeleton from top to bottom. The driving component is arranged at the bottom end of the support skeleton. A fixed frame is horizontally arranged inside the support skeleton and at the top end of the driving component. The fixed tray is arranged above the fixed frame and is fixedly connected to the top end of the driving component. The indenter is slidably connected to the fixed tray. The pressure detector is arranged in the middle of the top end of the support skeleton, and the detection end of the pressure detector corresponds to the top end of the indenter. A groove is arranged on the fixed tray, and sliding guide rails are arranged on the inner side walls at both ends of the chute. Sliders corresponding to the sliding guide rails are arranged on both side walls at the bottom of the indenter. Through the mutual cooperation of the sliders at the bottom end of the indenter and the sliding guide rails in the groove of the fixed tray, the lower indenter can be conveniently placed on the fixed tray, improving the loading and unloading efficiency of the measurement.

[0007] Furthermore, the indenter includes an upper indenter and a lower indenter. Limiting plates are symmetrically arranged at the rear ends of the upper indenter and the lower indenter. Sliding limiters are symmetrically arranged on the upper indenter and the lower indenter and away from one end of the limiting plates. By arranging sliding limiters on the upper and lower indenters, when using the stability tester for asphalt mixtures for measurement, the position of the asphalt mixtures can be limited by the sliding limiters, and at the same time, the debris of the asphalt mixtures generated during the measurement can be blocked and collected, reducing the subsequent finishing workload and improving the work efficiency.

[0008] Furthermore, the indenter further includes two guide columns. One end of each of the two guide columns is fixedly connected to the upper indenter or the lower indenter, and the other end of the guide column correspondingly penetrates through the upper indenter or the lower indenter. By connecting the upper and lower indenters through the guide columns, the upper indenter or the lower indenter can slide on the guide columns, laying a foundation for measuring asphalt mixtures.

[0009] Furthermore, a limiting member is arranged at one end of each guide column penetrating through the upper indenter or the lower indenter.

[0010] Further, the sliding limiter includes a sliding limit frame and a sliding limit plate. The sliding limit frame is arranged in a hollow cuboid shape. There are a number of open notches on one side of the sliding limit frame. Fixed rods corresponding to the open notches are provided on the side wall of the sliding limit plate. The sliding limit plate can be adjustably fixed within the sliding limit frame through the fixed rods. Through the mutual cooperation of the sliding limit plate and the sliding limit frame, the asphalt mixture can be better fixed within the pressing head.

[0011] Further, the driving assembly includes a driving power source arranged at the bottom end of the support skeleton. The output end of the driving power source vertically penetrates through the fixing frame and is connected to the fixed tray. By providing a fixed tray on the driving power source, the fixed tray can be pushed upward, thereby providing upward power for the pressing head.

[0012] Further, first fixing holes are provided on the outer sides of both ends of the fixed tray. The fixing holes penetrate from the outer side wall of the fixed tray into the sliding grooves. Second fixing holes are provided on the sliding blocks. The lower pressing head can be fixed within the groove of the fixed tray through the fixing holes.

[0013] Further, threaded structures are provided within the first fixing holes and the second fixing holes. By providing threaded structures within the first fixing holes and the second fixing holes, the first fixing holes and the second fixing holes can be better fastened through bolts.

[0014] Further, an infrared rangefinder is provided on the outer surface of the upper pressing head. The infrared rangefinder is arranged parallel to the sliding limiter.

[0015] Further, the ranging end of the infrared rangefinder is vertically downward. A WiFi module for data transmission is provided inside the infrared rangefinder.

[0016] The beneficial effects of the present utility model include: Through the cooperation of the driving power source, the fixed tray, the pressure sensor, and the pressing head, the determination of the asphalt mixture is carried out. Through the combined use of the groove on the fixed tray and the sliding block at the bottom end of the pressing head, the pressing head can be easily moved to the middle of the fixed tray, enabling the pressing head to accurately move below the pressure sensor. At the same time, the pressing head is fixed by bolts passing through the first fixing holes and the second fixing holes and cooperating with the baffle assembly to prevent the pressing head from shifting during the determination of the asphalt mixture. At the same time, the asphalt mixture is fixed between the pressing heads through the sliding limiter, achieving the limitation of the position of the asphalt mixture while being able to collect the debris generated during the testing of the asphalt mixture, reducing the subsequent workload and improving the cleaning efficiency and work efficiency. Description of the Drawings

[0017] Figure 1 is a schematic structural diagram of the asphalt mixture stability tester in the embodiment of the present utility model;

[0018] Figure 2 It is a schematic structural diagram of the indenter in the embodiment of the present utility model;

[0019] Figure 3 It is a schematic structural diagram of the sliding limiter in the embodiment of the present utility model;

[0020] Figure 4 It is a schematic structural diagram of the driving component in the embodiment of the present utility model;

[0021] Figure 5 It is a schematic structural diagram of the fixed tray in the embodiment of the present utility model;

[0022] Reference numerals: 1 support skeleton; 2 pressure detector; 3 indenter; 4 driving component; 5 infrared rangefinder; 31 upper indenter; 32 lower indenter; 33 limiting plate; 34 sliding limiter; 35 guiding column; 36 sliding limiting frame; 37 sliding limiting plate; 38 open notch; 39 fixing rod; 40 limiting member; 41 fixing bracket; 42 driving power source; 43 fixed tray; 44 groove; 45 sliding guide rail; 46 slider; 47 first fixing hole, 48 second fixing hole. Detailed implementation manners

[0023] In order to make the technical problems, technical solutions and beneficial effects to be solved by the embodiments of the present utility model clearer, the present utility model will be further described in detail below with reference to the drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present utility model and are not used to limit the present utility model.

[0024] It should be noted that when an element is referred to as "fixed to" or "disposed on" another element, it can be directly on the other element or indirectly on the other element. When an element is referred to as "connected to" another element, it can be directly connected to the other element or indirectly connected to the other element. In addition, the connection can be for fixing or for circuit connection.

[0025] It should be understood that the orientation or positional relationship indicated by the terms "length", "width", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc. is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the embodiments of the present utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus cannot be understood as a limitation to the present utility model.

[0026] In addition, the terms "first" and "second" are for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the quantity of the indicated technical features. Thus, features defined with "first" and "second" may explicitly or implicitly include one or more such features. In the description of the embodiments of the present utility model, the meaning of "a plurality of" is two or more, unless otherwise specifically defined.

[0027] Please refer to Figure 1 and Figure 2 , in an asphalt mixture stability tester disclosed in Embodiment 1, which includes a support skeleton 1, and a pressure detector 2, a pressing head 3, a driving assembly 4 and a fixed tray 5 that are arranged on the support skeleton 1 from top to bottom. The driving assembly 4 is arranged at the bottom end of the support skeleton 1. A fixing frame 41 is horizontally arranged inside the support skeleton 1 and at the top end of the driving assembly 4. Above the fixing frame 41 is provided the fixed tray 43. The fixed tray 43 is fixedly connected to the top end of the driving assembly 4. The pressing head 3 is slidably connected to the fixed tray 43. In the middle of the top end of the support skeleton 1 is provided the pressure detector 2. The detection end of the pressure detector 2 corresponds to the top end of the pressing head 3. The pressing head 3 includes an upper pressing head 31 and a lower pressing head 32. Limiting plates 33 are symmetrically arranged at the rear ends of the upper pressing head 31 and the lower pressing head 32. At one end of the upper pressing head 31 and the lower pressing head 32 away from the limiting plates 33, sliding limiters 34 are symmetrically arranged. The sliding limiters 34 are symmetrically arranged. The pressing head 3 further includes two guide columns 35. One end of each of the two guide columns 35 is fixedly connected to the upper pressing head 31 or the lower pressing head 32 respectively. The other end of the guide column 35 penetrates through the upper pressing head 31 or the lower pressing head 32 correspondingly. At the top of one end of each guide column 35 penetrating through the upper pressing head 31 or the lower pressing head 32 is provided a limiting member 40

[0028] Place the asphalt mixture into the indenter 3. The limiting plate 33 provided at the rear end of the indenter 3 can prevent the asphalt mixture from falling out of the indenter 3, and at the same time can help determine whether the placement position of the asphalt mixture is accurate. After placing the asphalt mixture, further seal the asphalt mixture by adjusting the sliding stopper 34 at the front end of the indenter 3. After placing the asphalt mixture, place the indenter 3 on the top of the driving assembly 4, that is, the lower indenter 32 is connected to the top of the driving assembly 4, and the upper indenter 31 is connected to the pressure detector 2. The driving assembly 4 pushes the lower indenter 32 to move upward, driving the asphalt mixture to move upward. While the lower indenter 32 moves upward, it drives the guide columns 35 on both sides of the lower indenter to move upward, making the lower indenter 32 approach the upper indenter 31, so as to realize the extrusion of the asphalt mixture. At the same time, by connecting the upper indenter 31 on the upper part of the asphalt mixture to the pressure detector, the extrusion force received by the asphalt mixture can be transmitted to the pressure detector through the upper indenter 31, and the extrusion force data can be obtained through the pressure detector, so as to complete the test of the asphalt mixture. The position of the asphalt mixture is limited by the limiting plate 33 and the sliding stopper 34, so as to prevent the position deviation of the asphalt mixture during the test of the asphalt mixture, reduce the occurrence of test accidents. At the same time, by setting the limiting member 30 at one end of the guide column 35 away from the upper indenter 31 or the lower indenter 32, the separation of the upper indenter 31 and the lower indenter 32 instruments can be prevented, and the falling accident can be prevented, ensuring the stability of the test.

[0029] Preferably, by setting the limiting plate 33 and the sliding stopper 34, in addition to being able to limit the asphalt mixture, the limiting plate 33 can also block the debris generated during the measurement of the asphalt mixture, prevent the asphalt debris from falling, reduce the equipment problems caused by the falling of the asphalt debris, and improve the test safety and stability.

[0030] Please refer to Figure 2 In Example 2, an infrared rangefinder 5 is provided on the outer surface of the upper indenter 31. The infrared rangefinder 5 is arranged in parallel with the sliding stopper 34; the ranging end of the infrared rangefinder 5 is vertically downward, and a WiFi module for data transmission is provided inside the infrared rangefinder 5; by providing the infrared rangefinder 5 on the outer surface of the upper indenter 31, the distance moved by the indenter 3 during the extrusion of the asphalt mixture can be obtained, so as to obtain more detection data about the asphalt mixture, and the data is transmitted to the computer of the tester through the WiFi module. By obtaining multiple data through the infrared rangefinder 5, the asphalt mixture can be better measured, improving the measurement accuracy.

[0031] Please refer to Figure 3, in Embodiment 3, it is disclosed that the sliding stopper 34 includes a sliding stopper frame 36 and a sliding stopper plate 37. The sliding stopper frame 36 is arranged in a hollow cuboid shape. A number of open notches 38 are provided on one side of the sliding stopper frame 36. Fixed rods 39 corresponding to the open notches 38 are provided on the side wall of the sliding stopper plate 37. The sliding stopper plate can be adjustably fixed in the sliding stopper frame 36 through the fixed rods 39. A push rod 391 is fixedly arranged on the top surface of the sliding stopper plate 37. By arranging the sliding stopper plate 37 in the sliding stopper frame 36 and adjusting the position of the sliding stopper plate 37 in the sliding stopper frame 36 based on the usage situation, after determining the position of the sliding stopper plate 37, the fixed rod on one side of the sliding stopper plate 37 is extended through the open notch 38 on the sliding stopper frame 36 to realize the fixation of the sliding stopper plate 37. Through the combined use of the sliding stopper frame 36 and the sliding stopper plate 37, it is ensured that the asphalt mixture does not shift in position during the measurement of the asphalt mixture, thereby improving the measurement accuracy.

[0032] Please refer to Figure 4 , in Embodiment 4, it is disclosed that the driving assembly 4 includes a driving power source 42 arranged at the bottom end of the support skeleton 1. The output end of the driving power source 42 vertically penetrates through the fixed frame 41 and is connected to the fixed tray 43. By fixedly connecting the output end of the driving power source 42 to the bottom of the fixed tray 43, the fixed tray 43 can be moved up and down by starting the driving power source 42, thereby pushing the indenter 3 towards the pressure detector 2 to realize the detection of the asphalt mixture inside the indenter 3. The driving power source 42 is used to realize the rising and falling of the fixed tray 43, providing sufficient detection power for the measurement of the asphalt mixture and improving the working efficiency. The driving assembly 4 used in the present utility model is a hydraulic cylinder.

[0033] Please refer to Figure 5 , in Embodiment 5, it is disclosed that a groove 44 is provided on the fixed tray 43. Sliding guide rails 45 are provided on the inner side walls at both ends of the chute 44. Sliders 46 corresponding to the sliding guide rails 45 are provided on both side walls at the bottom of the indenter 3. First fixing holes 47 are provided on the outer sides at both ends of the fixed tray 43. The first fixing holes 47 penetrate from the outer side wall of the fixed tray 43 to the inside of the chute 44. Second fixing holes 48 are provided on the sliders 46. Threaded structures are provided in the first fixing holes 47 and the second fixing holes 48. By providing the groove 44 on the bearing surface of the fixed tray 43, arranging the sliding guide rails 45 on both sides of the groove 44, and simultaneously arranging the sliders 46 on both side walls at the bottom end of the lower indenter 32, through the cooperation of the sliders 46 and the sliding guide rails 45, the indenter 3 can be quickly loaded and unloaded on the fixed tray 43, improving the measurement efficiency, accelerating the loading and unloading efficiency, and also saving manpower to a certain extent.

[0034] Preferably, a first fixing hole 47 is penetrated through the outer side wall of the fixed tray 43, and a second fixing hole 48 is provided in the middle of the slider 46. After the pressing head 3 slides into the fixed tray 43, a bolt can be used to extend into the first fixing hole 47 and the second fixing hole 48, so as to fix the pressing head 3 on the fixed tray 43. By using the first fixing hole 47 and the second fixing hole 48 in cooperation, the pressing head 3 can be fixed on the fixed tray 43 without deviation, and at the same time, the pressing head 3 can always be located directly below the pressure detector 2. By fixing the pressing head 3 on the fixed tray 3 through the first fixing hole 47 and the second fixing hole 48, the problem of position deviation of the pressing head 3 during the measurement of asphalt mixture is maximally eliminated, the measurement safety and accuracy are improved, and the occurrence of measurement accidents is reduced.

[0035] The background part of the present invention may include background information about the problems or environment of the present invention, rather than necessarily describing the prior art. Therefore, the content included in the background art section is not an admission by the applicant of the prior art.

[0036] The above content is a further detailed description of the present invention in combination with specific / preferred embodiments, and it cannot be determined that the specific implementation of the present invention is only limited to these descriptions. For those of ordinary skill in the technical field to which the present invention belongs, without departing from the concept of the present invention, several alternatives or modifications can be made to these described embodiments, and these alternative or modified ways should all be regarded as belonging to the protection scope of the present invention. In the description of this specification, the description with reference to terms such as "an embodiment", "some embodiments", "preferred embodiments", "examples", "specific examples" or "some examples" means that the specific features, structures, materials or characteristics described in connection with the embodiment or example are included in at least one embodiment or example of the present invention. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner. Without contradiction, those skilled in the art can combine and combine the different embodiments or examples described in this specification and the features of different embodiments or examples. Although the embodiments of the present invention and their advantages have been described in detail, it should be understood that various changes, substitutions and alterations can be made herein without departing from the scope of protection of the patent application.

Claims

1. An asphalt mixture stability tester, characterized in that: It includes a support skeleton (1), a pressure detector (2), a pressure head (3), a driving component (4), and a fixed tray (43) that are arranged from top to bottom on the support skeleton (1). The driving component (4) is arranged at the bottom end of the support skeleton (1). A fixing frame (41) is horizontally arranged inside the support skeleton (1) at the top of the driving component (4). The fixed tray (43) is arranged above the fixing frame (41). The fixed tray (43) is fixedly connected to the top end of the driving component (4). The pressure head (3) is slidably connected to the fixed tray (43). The pressure detector (2) is arranged in the middle of the top end of the support skeleton (1). The detection end of the pressure detector (2) corresponds to the top end of the pressure head (3). A groove (44) is arranged on the fixed tray (43). Sliding guide rails (45) are arranged on the inner side walls at both ends of the chute (44). Sliders (46) corresponding to the sliding guide rails (45) are arranged on both side walls at the bottom of the pressure head (3).

2. The asphalt mixture stability tester according to claim 1, characterized in that: The pressure head (3) includes an upper pressure head (31) and a lower pressure head (32). Limiting plates (33) are symmetrically arranged at the rear ends of the upper pressure head (31) and the lower pressure head (32). Sliding limiters (34) are symmetrically arranged at one end of the upper pressure head (31) and the lower pressure head (32) away from the limiting plates (33).

3. The asphalt mixture stability tester according to claim 2, characterized in that: The pressure head (3) further includes two guiding columns (35). One end of each of the two guiding columns (35) is fixedly connected to the upper pressure head (31) or the lower pressure head (32), and the other end correspondingly penetrates through the upper pressure head (31) or the lower pressure head (32).

4. The asphalt mixture stability tester according to claim 3, characterized in that: A limiting member (40) is arranged at one end of each guiding column (35) penetrating through the upper pressure head (31) or the lower pressure head (32).

5. The asphalt mixture stability tester according to claim 1, characterized in that: The sliding limiter (34) includes a sliding limit frame (36) and a sliding limit plate (37). A number of open notches (38) are arranged on one side of the sliding limit frame (36). Fixed rods (39) corresponding to the open notches (38) are arranged on the side wall of the sliding limit plate (37). The sliding limit plate can be adjustably fixed in the sliding limit frame (36) through the fixed rods (39).

6. The asphalt mixture stability tester according to claim 1, wherein: The driving component (4) includes a driving power source (42) arranged at the bottom end of the support skeleton (1). The output end of the driving power source (42) vertically penetrates through the fixing frame (41) upward and is connected to the fixed tray (43).

7. The asphalt mixture stability tester according to claim 6, characterized in that: First fixing holes (47) are arranged on both sides of the fixed tray (43). The first fixing holes (47) penetrate from the outer side wall of the fixed tray (43) to the inside of the chute (44). Second fixing holes (48) are arranged on the sliders (46).

8. The asphalt mixture stability tester according to claim 7, characterized in that: Threaded structures are arranged in the first fixing holes (47) and the second fixing holes (48).

9. The asphalt mixture stability tester according to claim 2, characterized in that: An infrared rangefinder (5) is arranged on the outer surface of the upper pressure head (31). The infrared rangefinder (5) is arranged in parallel with the sliding limiter (34).

10. The asphalt mixture stability tester according to claim 9, characterized in that: The ranging end of the infrared rangefinder (5) is vertically downward. A WiFi module for data transmission is arranged inside the infrared rangefinder (5).

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