Heating test device for asphalt pavement sample

Abstract

The utility model discloses a heating test device for asphalt pavement samples, which comprises a mounting shell, a sample groove, a heat dissipation fan and a thermometer, and is characterized by further comprising a fixing plate and a driving mechanism, a plurality of supports are fixedly connected to the bottom of the fixing plate, mounting grooves for the supports to be inserted are formed in the mounting shell, a motor is fixedly mounted on the fixing plate, and the driving mechanism is connected with the motor. A sleeve is rotationally arranged in the center of the bottom of the fixing plate, the motor drives the sleeve to rotate through a driving mechanism, a rotating disc is fixedly connected to the bottom of the sleeve, a fixing shaft is fixedly arranged at the bottom of the fixing plate, the sleeve rotationally sleeves the fixing shaft, and the fixing shaft is rotationally connected with the rotating disc. A linkage mechanism linked with the middle gear is arranged in the turntable, a middle stirring shaft is fixedly arranged in the center of the bottom of the turntable, middle stirring blades are fixedly arranged on the outer wall of the middle stirring shaft, a side stirring shaft is fixedly arranged on a bottom plate of the linkage mechanism, and side stirring blades are fixedly arranged on the outer wall of the side stirring shaft.

Description

Technical Field

[0001] The utility model relates to the technical field of highway engineering, and particularly relates to a heating test device for asphalt pavement specimens. Background Art

[0002] With the rapid development of highways in China, due to the influence of factors such as the rapid growth of traffic volume, vehicle enlargement, serious overloading, and construction quality, the asphalt roads built previously have appeared diseases such as cracks, potholes, ruts, and subsidence long before reaching their service life. Therefore, appropriate asphalt pavement maintenance technologies are urgently needed for proper maintenance. The traditional maintenance method is to dig, mill, and fill the diseased asphalt pavement, which not only pollutes the environment but also causes a large amount of waste of high-quality asphalt during the implementation of the project. In the face of this situation, in order to adopt a more environmentally friendly, more economical, and less impactful asphalt pavement maintenance method, various maintenance equipment has emerged, mainly including infrared radiation heating equipment, hot air circulation heating equipment, microwave heating equipment, etc., and these equipment mostly need to obtain usage parameters through test devices.

[0003] The utility model with the publication number of CN219737347U discloses a heating test device for asphalt pavement specimens, which includes an installation shell, an insertion device, a column, a thermometer, a specimen box body, an insertion hole, a specimen groove, a heat dissipation fan, a heat dissipation shell, an air inlet pipe, and an exhaust heat pipe; in this utility model, the heating equipment is started to heat the sample in the specimen groove, and at the same time, the temperature in the sample can be displayed in the thermometer in real time, so as to facilitate the real-time adjustment of the parameters of the heating equipment, and thus avoid the inconvenience and trouble caused by adjusting the parameters of the heating equipment during later use; the several insertion devices provided in this utility model can send the thermometer probe into different positions of the sample, thereby improving the comprehensiveness of temperature measurement and also improving the accuracy of the test.

[0004] The above existing solutions have the following problems: The sample is heated in the specimen groove, and the accumulation of the samples in the specimen groove is likely to cause uneven heating of the samples, affecting the test accuracy. Content of the Utility Model

[0005] The purpose of the utility model is to provide a heating test device for asphalt pavement specimens to solve the above technical problems.

[0006] To achieve the above object, the present utility model provides the following technical solution: A heating test device for asphalt pavement specimens, comprising an installation housing, a specimen tank, a heat dissipation fan and a thermometer, further comprising a fixing plate and a driving mechanism. A plurality of brackets are fixedly connected to the bottom of the fixing plate. Installation grooves for inserting the brackets are formed on the installation housing around the specimen tank. A motor is fixedly installed on the fixing plate. A sleeve is rotatably provided at the center of the bottom of the fixing plate. The motor drives the sleeve to rotate through the driving mechanism. A turntable is fixedly connected to the bottom of the sleeve. A fixed shaft is fixedly provided at the bottom of the fixing plate. The sleeve is rotatably sleeved outside the fixed shaft. The fixed shaft is rotatably connected to the turntable. A middle gear rotatably connected to the turntable is fixedly connected to one end of the fixed shaft located inside the turntable. Linkage mechanisms are provided on both sides of the middle gear inside the turntable and are linked with the middle gear. A middle stirring shaft is fixedly provided at the center of the bottom of the turntable. Middle stirring blades are fixedly provided on the outer wall of the middle stirring shaft. A side stirring shaft is fixedly provided on the bottom plate of the linkage mechanism. Side stirring blades are fixedly provided on the outer wall of the side stirring shaft.

[0007] Preferably, the driving mechanism comprises a driving gear and a driven gear. The driving gear is rotatably provided at the bottom of the fixing plate. The driving gear is fixedly provided with a rotating shaft penetrating through the fixing plate and fixedly connected to the output end of the motor. The driven gear is fixedly sleeved outside the sleeve and meshes with the driving gear.

[0008] Preferably, an annular groove for inserting the sleeve and rotatably connecting with the sleeve is formed at the bottom of the fixing plate. A limiting annular groove is communicated with the inner wall of the annular groove. A limiting ring fixedly connected to the outer wall of the sleeve is rotatably provided in the limiting annular groove.

[0009] Preferably, the linkage mechanism comprises a connecting gear and a side gear. The connecting gear and the side gear are both rotatably provided inside the turntable and symmetrically arranged on both sides of the middle gear. The middle gear, the connecting gear and the side gear mesh with each other. The side stirring shaft penetrates through the turntable and is coaxially and fixedly connected to the end face of the side gear.

[0010] Preferably, a plurality of middle stirring blades are evenly arranged in a ring along the outer wall of the middle stirring shaft and are evenly arranged in the axial direction of the middle stirring shaft. A plurality of side stirring blades are evenly arranged in a ring along the outer wall of the side stirring shaft and are evenly arranged in the axial direction of the side stirring shaft. The middle stirring blades and the side stirring blades are arranged staggeredly.

[0011] Preferably, the bracket and the installation groove are in interference fit.

[0012] Compared with the prior art, the beneficial effects of the present utility model are as follows: Through the arrangement of the motor, driving gear, driven gear, rotating shaft, sleeve, fixed shaft, turntable, middle gear, connecting gear, side gear, middle stirring shaft, middle stirring blades, side stirring shaft and side stirring blades, when the motor is started, the turntable rotates to drive the middle stirring shaft, middle stirring blades, side stirring shaft and side stirring shaft to rotate, and the side stirring shaft and side stirring shaft also rotate self - sufficiently while following the rotation of the turntable, so as to fully stir the sample, make the sample heated evenly, and improve the accuracy of the test. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] In order to more clearly illustrate the technical solutions of the embodiments of the present utility model, the accompanying drawings required for describing the embodiments will be briefly introduced below. Obviously, the accompanying drawings in the following description are only some embodiments of the present utility model. For those of ordinary skill in the art, other accompanying drawings can be obtained based on these drawings without creative efforts.

[0014] Figure 1 is the external view schematic diagram of this embodiment;

[0015] Figure 2 is the exploded view of the stirring mechanism and the installation groove of this embodiment;

[0016] Figure 3 is the cross - sectional view of the stirring mechanism of this embodiment.

[0017] In the accompanying drawings, the list of components represented by each reference numeral is as follows:

[0018] 1. Installation housing; 2. Sample tank; 3. Heat dissipation fan; 4. Thermometer; 5. Installation groove; 6. Bracket; 7. Fixed plate; 8. Motor; 9. Driving gear; 10. Rotating shaft; 11. Driven gear; 12. Sleeve; 13. Ring groove; 14. Limiting ring groove; 15. Limiting ring; 16. Fixed shaft; 17. Turntable; 18. Middle gear; 19. Connecting gear; 20. Side gear; 21. Middle stirring shaft; 22. Middle stirring blades; 23. Side stirring shaft; 24. Side stirring blades. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0019] The technical solutions in the embodiments of the present utility model will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present utility model without creative efforts fall within the scope of protection of the present utility model.

[0020] Please refer to Figures 1-3, the present utility model provides a technical solution: a heating test device for asphalt pavement specimens, including an installation housing 1, a specimen groove 2, a heat dissipation fan 3 and a thermometer 4, and further including a fixing plate 7 and a driving mechanism. A plurality of brackets 6 are fixedly connected to the bottom of the fixing plate 7. Installation grooves 5 for inserting the brackets 6 are formed on the installation housing 1 around the specimen groove 2. A motor 8 is fixedly installed on the fixing plate 7. A sleeve 12 is rotatably provided at the center of the bottom of the fixing plate 7. The motor 8 drives the sleeve 12 to rotate through the driving mechanism. A turntable 17 is fixedly connected to the bottom of the sleeve 12. A fixed shaft 16 is fixedly provided at the bottom of the fixing plate 7. The sleeve 12 is rotatably sleeved outside the fixed shaft 16. The fixed shaft 16 is rotatably connected to the turntable 17. A middle gear 18 rotatably connected to the turntable 17 is fixedly connected to one end of the fixed shaft 16 located inside the turntable 17. Linkage mechanisms linked to the middle gear 18 are provided on both sides of the middle gear 18 inside the turntable 17. A middle stirring shaft 21 is fixedly provided at the center of the bottom of the turntable 17. Middle stirring blades 22 are fixedly provided on the outer wall of the middle stirring shaft 21. Side stirring shafts 23 are fixed to the bottom plate of the linkage mechanism. Side stirring blades 24 are fixedly provided on the outer wall of the side stirring shafts 23.

[0021] Specifically, the driving mechanism includes a driving gear 9 and a driven gear 11. The driving gear 9 is rotatably provided at the bottom of the fixing plate 7. A rotating shaft 10 passing through the fixing plate 7 and fixedly connected to the output end of the motor 8 is fixedly provided on the driving gear 9. The driven gear 11 is fixedly sleeved outside the sleeve 12 and meshes with the driving gear 9. The motor 8 drives the driving gear 9 to rotate through the rotating shaft 10, and drives the driven gear 11 to rotate through the meshing of the driving gear 9 and the driven gear 11. The driven gear 11 drives the sleeve 12 to rotate.

[0022] Specifically, an annular groove 13 for inserting the sleeve 12 and rotatably connected to the sleeve 12 is formed at the bottom of the fixing plate 7. A limiting annular groove 14 is communicated with the inner wall of the annular groove 13. A limiting ring 15 fixedly connected to the outer wall of the sleeve 12 is rotatably provided in the limiting annular groove 14. Through the arrangement of the limiting ring 15 and the limiting annular groove 14, the stability of the rotation of the sleeve 12 is ensured.

[0023] Specifically, the linkage mechanism includes a connecting gear 19 and a side gear 20. The connecting gear 19 and the side gear 20 are both rotatably arranged within the turntable 17 and symmetrically arranged on both sides of the middle gear 18. The middle gear 18, the connecting gear 19, and the side gear 20 mesh with each other. The side stirring shaft 23 penetrates the turntable 17 and is coaxially and fixedly connected to the end face of the side gear 20. The rotation of the sleeve 12 drives the rotation of the turntable 17. The rotation of the turntable 17 drives the rotation of the middle stirring shaft 21, the middle stirring blades 22, the side stirring shaft 23, and the side stirring shaft 24. Through the mutual meshing between the middle gear 18, the connecting gear 19, and the side gear 20, under the rotation of the turntable 17, the connecting gear 19 rotates due to the interaction with the fixed middle gear 18. The connecting gear 19 drives the side gear 20 to rotate, and the rotation of the side gear 20 drives the rotation of the side stirring shaft 23 and the side stirring blades 24. Thus, the side stirring shaft 23 and the side stirring shaft 24 rotate self - rotatably while following the rotation of the turntable 17, thereby improving the stirring degree of the specimen, enabling the specimen in the specimen groove 2 to be evenly heated, and improving the test accuracy.

[0024] Specifically, a plurality of middle stirring blades 22 are evenly arranged in a ring along the outer wall of the middle stirring shaft 21 and are evenly arranged in the axial direction of the middle stirring shaft 21. A plurality of side stirring blades 24 are evenly arranged in a ring along the outer wall of the side stirring shaft 23 and are evenly arranged in the axial direction of the side stirring shaft 23. The middle stirring blades 22 and the side stirring blades 24 are arranged staggeredly to improve the stirring degree of the specimen.

[0025] Specifically, the bracket 6 and the installation groove 5 are in interference fit. The bracket 6 and the installation groove 5 are in interference fit with a small amount of interference to ensure the stability of the installation of the bracket 6.

[0026] A specific application example of this embodiment is as follows:

[0027] When this device is in use, the bracket 6 is installed in the installation groove 5. During the heating of the specimen, the motor 8 is started. The motor 8 drives the driving gear 9 to rotate through the rotating shaft 10. The driven gear 11 is driven to rotate through the meshing of the driving gear 9 and the driven gear 11. The driven gear 11 drives the sleeve 12 to rotate. The rotation of the sleeve 12 drives the rotation of the turntable 17. The rotation of the turntable 17 drives the rotation of the middle stirring shaft 21, the middle stirring blades 22, the side stirring shaft 23, and the side stirring shaft 24. Through the mutual meshing between the middle gear 18, the connecting gear 19, and the side gear 20, under the rotation of the turntable 17, the connecting gear 19 rotates due to the interaction with the fixed middle gear 18. The connecting gear 19 drives the side gear 20 to rotate, and the rotation of the side gear 20 drives the rotation of the side stirring shaft 23 and the side stirring blades 24. Thus, the side stirring shaft 23 and the side stirring shaft 24 rotate self - rotatably while following the rotation of the turntable 17, thereby improving the stirring degree of the specimen, enabling the specimen in the specimen groove 2 to be evenly heated, and improving the accuracy of the test.

[0028] In the description of the present utility model, it should be understood that the orientation or positional relationships indicated by terms such as "coaxial", "bottom", "one end", "top", "middle", "the other end", "upper", "one side", "top", "inner", "front", "center", "both ends", etc. are based on the orientation or positional relationships in the drawings, and are only for the convenience of describing 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 should not be construed as a limitation to the present utility model.

[0029] In the present utility model, unless otherwise clearly defined and limited, terms such as "installed", "set", "connected", "fixed", "swivelly connected", etc. should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or integrated; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium, and it can be the communication inside two elements or the interaction relationship between two elements. Unless otherwise clearly defined, for those of ordinary skill in the art, the specific meanings of the above terms in the present utility model can be understood according to specific circumstances.

[0030] Although the embodiments of the present utility model have been shown and described, for those of ordinary skill in the art, it can be understood that these embodiments can be modified without departing from the principles and spirit of the present utility model, and the scope of the present utility model is defined by the appended claims and their equivalents.

Claims

1. A heating test device for an asphalt pavement sample, comprising a mounting housing (1), a sample slot (2), a heat dissipation fan (3) and a thermometer (4), characterized in that: The invention also comprises a fixing plate (7) and a driving mechanism, wherein a plurality of brackets (6) are fixedly connected to the bottom of the fixing plate (7), a mounting groove (5) for inserting the brackets (6) is provided on the mounting shell (1) at the peripheral side of the sample groove (2), a motor (8) is fixedly installed on the fixing plate (7), a sleeve (12) is rotatably provided at the center of the bottom of the fixing plate (7), the motor (8) drives the sleeve (12) to rotate through the driving mechanism, a turntable (17) is fixedly connected to the bottom of the sleeve (12), a fixed shaft (16) is fixedly provided at the bottom of the fixing plate (7), and the sleeve (12) is rotatably sleeved on the fixed shaft (16). 6), the fixed shaft (16) is rotatably connected to the turntable (17), one end of the fixed shaft (16) located inside the turntable (17) is fixedly connected to a middle gear (18) rotatably connected to the turntable (17), and linkage mechanisms that are linked to the middle gear (18) are provided on both sides of the middle gear (18) inside the turntable (17), a middle stirring shaft (21) is fixedly provided at the center of the bottom of the turntable (17), a middle stirring blade (22) is fixedly provided on the outer wall of the middle stirring shaft (21), a side stirring shaft (23) is fixedly provided on the bottom plate of the linkage mechanism, and a side stirring blade (24) is fixedly provided on the outer wall of the side stirring shaft (23).

2. The heating test device for asphalt pavement samples according to claim 1, characterized in that: The driving mechanism comprises a driving gear (9) and a driven gear (11); the driving gear (9) is rotatably arranged at the bottom of the fixed plate (7); the driving gear (9) is fixedly provided with a rotating shaft (10) that penetrates the fixed plate (7) and is fixedly connected to the output end of the motor (8); and the driven gear (11) is fixedly sleeved outside the sleeve (12) and meshes with the driving gear (9).

3. The heating test device for asphalt pavement samples according to claim 1, characterized in that: The bottom of the fixing plate (7) is provided with an annular groove (13) for the sleeve (12) to be inserted into and rotatably connected to the sleeve (12); the inner wall of the annular groove (13) is connected to a limiting annular groove (14); a limiting ring (15) rotatably provided in the limiting annular groove (14) and fixedly connected to the outer wall of the sleeve (12).

4. The heating test device for asphalt pavement samples according to claim 1, characterized in that: The linkage mechanism comprises a connecting gear (19) and a side gear (20), wherein the connecting gear (19) and the side gear (20) are both rotatably disposed in the rotating disk (17) and symmetrically disposed on both sides of the middle gear (18), the middle gear (18), the connecting gear (19) and the side gear (20) are meshed with each other, and the side stirring shaft (23) passes through the rotating disk (17) and is coaxially fixedly connected to the end face of the side gear (20).

5. The heating test device for asphalt pavement samples according to claim 1, characterized in that: A plurality of the middle stirring blades (22) are evenly arranged in an annular pattern along the outer wall of the middle stirring shaft (21) and are evenly arranged in the axial direction of the middle stirring shaft (21); a plurality of the side stirring blades (24) are evenly arranged in an annular pattern along the outer wall of the side stirring shaft (23) and are evenly arranged in the axial direction of the side stirring shaft (23); the middle stirring blades (22) and the side stirring blades (24) are staggered.

6. The heating test device for asphalt pavement samples according to claim 1, characterized in that: The bracket (6) and the mounting groove (5) are in interference fit.

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