Double-phase-change self-temperature-regulating asphalt mixture preparation device
By designing a biphase change self-temperature adjustment asphalt mixture preparation device with weighing function, the combination of electronic scale and feeding shaft is used to solve the problem of device lacking weighing function on the market, and the accurate weighing of materials and efficient preparation of mixture are achieved.
Patent Information
- Application Number
- CN202421859496.3
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-08-02
- Publication Date
- 2025-06-27
- Estimated Expiration
- 2034-08-02
AI Technical Summary
There is a lack of a biphase change self-temperature adjustment asphalt mixture preparation device with weighing function on the market, which makes it difficult to accurately weigh each added material when preparing the biphase change self-temperature adjustment asphalt mixture.
A biphase change self-temperature adjustment asphalt mixture preparation device is designed, including a weighing assembly, a weighing frame, a feeding shaft and a plurality of feeding units. The material in the hopper is weighed through an electronic scale, and the hopper reaches the mixing space in turn by rotating the feeding shaft, thereby realizing automatic filling and weighing of the material.
Accurate weighing of materials in each hopper is achieved, errors of manual weighing are avoided, and efficiency and accuracy of preparing biphasic change self-temperature asphalt mixture is improved.
Smart Images
Figure CN223033783U_ABST
Abstract
Description
Technical Field
[0001] The utility model belongs to the technical field of mixture preparation devices, and more specifically, relates to a dual-phase change self-regulating temperature asphalt mixture preparation device. Background Art
[0002] Dual-phase change self-regulating temperature asphalt mixture is to incorporate a phase change material with a relatively high phase change temperature and a phase change material with a relatively low phase change temperature into the asphalt mixture, endowing the asphalt pavement with the function of delaying the pavement heating rate under high temperature conditions and delaying the pavement cooling rate under low temperature conditions, so as to alleviate problems such as rutting diseases and heat island effect in summer, and low temperature cracking and icing and snow accumulation in winter of the asphalt pavement, and achieve the dual-phase change temperature regulation effect of warm in winter and cool in summer for the asphalt pavement. When preparing the dual-phase change self-regulating temperature asphalt mixture, materials such as a set mass of hot mineral powder, a phase change material with a relatively high phase change temperature, and a phase change material with a relatively low phase change temperature need to be added into the asphalt and stirred. Thus, it is necessary to weigh each material added into the asphalt, and currently, there is a lack of a dual-phase change self-regulating temperature asphalt mixture preparation device with a weighing function in the market. Summary of the Utility Model
[0003] The purpose of the utility model is to provide a dual-phase change self-regulating temperature asphalt mixture preparation device, aiming to solve the problem that there is a lack of a dual-phase change self-regulating temperature asphalt mixture preparation device with a weighing function in the market.
[0004] To achieve the above purpose, the technical solution adopted by the utility model is: providing a dual-phase change self-regulating temperature asphalt mixture preparation device, including a bracket, a stirring container, an opening and closing plate, a stirring assembly, a weighing assembly, a weighing frame, a feeding shaft, and a plurality of feeding units. The stirring container is fixedly arranged on the bracket, and there is a stirring space inside the stirring container, and both the upper and lower ends of the stirring space are open ends. The opening and closing plate is located below the stirring container, and the opening and closing plate is horizontally arranged and slidably connected with the bracket in the horizontal direction, so that the opening and closing plate can open and close the lower end of the stirring space. The stirring assembly is used for stirring the materials in the stirring space. The weighing assembly is fixedly arranged on the bracket. The weighing frame is fixedly arranged on the weighing assembly. The feeding shaft is vertically arranged and rotatably arranged on the weighing frame. The plurality of feeding units are evenly distributed around the feeding shaft, the feeding units are located above the stirring container, and each feeding unit includes a hopper, a connecting shaft, a blocking shaft, and a supporting member. The axis of the hopper is vertically arranged, both ends of the connecting shaft are fixedly connected with the hopper and the feeding shaft respectively, the blocking shaft is slidably inserted into the hopper to block the lower end of the hopper, and the supporting member is located on the hopper and fixedly connected with the blocking shaft. Wherein, the rotation of the feeding shaft can enable the plurality of hoppers to reach directly above the stirring space in sequence.
[0005] In a possible implementation, the stirring assembly includes a stand, a stirring shaft, a driving assembly and a plurality of stirring blades. The stand is fixed on the stirring container. The stirring shaft is vertically arranged and rotatably arranged on the stand, and one section of the stirring shaft is located in the stirring space. The driving assembly is used to drive the stirring shaft to rotate. A plurality of stirring blades are located in the stirring space, and the plurality of stirring blades are evenly distributed around the stirring shaft and are fixedly connected to the stirring shaft.
[0006] In a possible implementation, the weighing frame has a horizontally arranged first fixed plate, the feeding shaft can rotate to penetrate the first fixed plate, and the side wall of the feeding shaft has two first limiting portions protruding outward, and the two first limiting portions are respectively in contact with the upper surface and the lower surface of the first fixed plate.
[0007] In a possible implementation, the weighing component adopts an electronic scale.
[0008] In a possible implementation, the mixing container further has a heating chamber surrounding the mixing space, and the dual-phase variable self-temperature regulating asphalt mixture preparation device further includes an air inlet pipe, an air outlet pipe, an electric heating rod and a fixing member. One end of the air inlet pipe is fixedly connected to the mixing container and communicates with the heating chamber. One end of the air outlet pipe is fixedly connected to the mixing container and communicates with the heating chamber. The electric heating rod is inserted into the mixing shaft. The fixing member is fixedly connected to both the electric heating rod and the stand.
[0009] In a possible implementation, the dual-phase-changing self-temperature-regulating asphalt mixture preparation device further includes a reinforcing member, which is fixed on the bottom surface of the opening and closing plate.
[0010] In a possible implementation, the dual-phase variable self-temperature regulating asphalt mixture preparation device further includes two fixed shafts. The two fixed shafts are respectively located on both sides of the opening and closing plate, and the fixed shafts are arranged along the sliding direction of the opening and closing plate and are fixedly connected to the bracket. The reinforcement member is slidably sleeved on the two fixed shafts.
[0011] In a possible implementation, the dual-phase variable self-temperature regulating asphalt mixture preparation device further includes a hydraulic cylinder, the cylinder body of which is fixedly connected to the bracket, and the piston rod of which can be extended and retracted along the length direction of the fixed axis and is fixedly connected to the reinforcement member.
[0012] In a possible implementation, the stand has a horizontally arranged second fixed plate, the stirring shaft can rotate and penetrate the second fixed plate, and the side wall of the stirring shaft has two second limiting portions protruding outward, and the two second limiting portions are respectively fitted with the upper surface and the lower surface of the second fixed plate.
[0013] In a possible implementation, the driving assembly includes a driving motor and two meshing gears. The driving motor is fixedly arranged on the second fixing plate. The two meshing gears are respectively sleeved and fixed on the stirring shaft and the output shaft of the driving motor.
[0014] In the embodiment of the present application, the supporting member can limit the downward movement of the plugging shaft, so that the plugging shaft keeps the lower end of the hopper closed. The hot iron ore powder, the phase change material with a higher phase change temperature, and the phase change material with a lower phase change temperature are respectively added into each hopper. Since the hopper is fixedly connected to the feeding shaft through a connecting shaft, the weighing frame is fixedly arranged on the weighing assembly, and the feeding shaft is arranged on the weighing frame, the weighing assembly can weigh the materials in each hopper. When the rotation of the feeding shaft makes the hopper reach directly above the stirring space, the driving plugging shaft withdraws upward from the hopper, thus opening the lower end of the hopper, so that the materials in the hopper fall into the stirring space. The stirring assembly is used to stir the materials in this stirring space, so as to prepare the double-phase change asphalt mixture. Since the weighing assembly can weigh the materials in each hopper, the problem that there is a lack of a double-phase change self-regulating temperature asphalt mixture preparation device with a weighing function in the market can be avoided. Description of the Drawings
[0015] In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the following will briefly introduce the drawings required for use in the embodiments or the description of the prior art. Obviously, the following drawings are only some embodiments of the present invention. For those of ordinary skill in the art, without creative efforts, other drawings can also be obtained based on these drawings.
[0016] Figure 1 It is an axonometric structural schematic diagram of a double-phase change self-regulating temperature asphalt mixture preparation device provided by an embodiment of the present invention;
[0017] Figure 2 For Figure 1 the enlarged structural schematic diagram of the partial A in
[0018] Figure 3 It is an axonometric sectional structural schematic diagram of a double-phase change self-regulating temperature asphalt mixture preparation device provided by an embodiment of the present invention after removing the weighing assembly, the weighing frame, etc.;
[0019] Figure 4 For Figure 3 the enlarged structural schematic diagram of the partial B in
[0020] Figure 5 It is an axonometric sectional structural schematic diagram of the connection of the hopper, the plugging shaft and the supporting member in a double-phase change self-regulating temperature asphalt mixture preparation device provided by an embodiment of the present invention;
[0021] In the figure: 1. Support; 2. Stirring container; 21. Stirring space; 22. Heating chamber; 3. Opening and closing plate; 41. Upright frame; 411. Second fixing plate; 42. Stirring shaft; 421. Second limiting part; 431. Driving motor; 432. Gear; 44. Stirring blade; 5. Weighing assembly; 6. Weighing frame; 61. First fixing plate; 7. Feeding shaft; 71. First limiting part; 81. Hopper; 82. Connecting shaft; 83. Sealing shaft; 84. Supporting part; 9. Air inlet pipe; 10. Air outlet pipe; 110. Electric heating rod; 120. Fixing part; 130. Reinforcing part; 140. Fixed shaft; 150. Hydraulic cylinder. Detailed implementation mode
[0022] In order to make the technical problems, technical solutions and beneficial effects to be solved by the present utility model clearer and more understandable, the present utility model will be further described in detail below with reference to the accompanying 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.
[0023] It should be further noted that the drawings and embodiments of the present utility model mainly describe and explain the concept of the present utility model. On the basis of this concept, the specific forms and settings of some connection relationships, position relationships, power mechanisms, power supply systems, hydraulic systems and control systems may not be completely described. However, on the premise that those skilled in the art understand the concept of the present utility model, those skilled in the art can implement the above specific forms and settings in a well-known manner.
[0024] When an element is referred to as being "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 being "connected to" another element, it can be directly connected to the other element or indirectly connected to the other element.
[0025] The orientation or positional relationship indicated by terms such as "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 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 therefore should not be construed as a limitation to the present utility model.
[0026] 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 of such features. In the description of the present utility model, the meaning of "a plurality" is two or more, and the meaning of "several" is one or more, unless otherwise specifically defined.
[0027] Please refer to Figure 1 , Figure 2 , Figure 3 and Figure 5 , and a device for preparing a dual-phase phase-change self-regulating temperature asphalt mixture provided by the present utility model will now be described. The device for preparing a dual-phase phase-change self-regulating temperature asphalt mixture includes a support 1, a stirring container 2, an opening and closing plate 3, a stirring assembly, a weighing assembly 5, a weighing frame 6, a feeding shaft 7, and a plurality of feeding units. The stirring container 2 is fixedly arranged on the support 1. There is a stirring space 21 inside the stirring container 2, and both the upper and lower ends of the stirring space 21 are open ends. The opening and closing plate 3 is located below the stirring container 2. The opening and closing plate 3 is horizontally arranged and is slidably connected to the support 1 in the horizontal direction so that the opening and closing plate 3 can open and close the lower end of the stirring space 21. The stirring assembly is used for stirring the materials in the stirring space 21. The weighing assembly 5 is fixedly arranged on the support 1. The weighing frame 6 is fixedly arranged on the weighing assembly 5. The feeding shaft 7 is vertically arranged and is rotatably arranged on the weighing frame 6. The plurality of feeding units are evenly distributed around the feeding shaft 7. The feeding units are located above the stirring container 2. Each feeding unit includes a hopper 81, a connecting shaft 82, a blocking shaft 83, and a supporting member 84. The axis of the hopper 81 is vertically arranged. The two ends of the connecting shaft 82 are respectively fixedly connected to the hopper 81 and the feeding shaft 7. The blocking shaft 83 is slidably inserted into the hopper 81 to block the lower end of the hopper 81. The supporting member 84 is located on the hopper 81 and is fixedly connected to the blocking shaft 83. Among them, the rotation of the feeding shaft 7 can enable the plurality of hoppers 81 to sequentially reach directly above the stirring space 21.
[0028] A device for preparing a dual-phase change self-regulating temperature asphalt mixture provided by the utility model, compared with the prior art, the supporting member 84 can limit the downward movement of the plug shaft 83, so that the plug shaft 83 keeps the lower end of the hopper 81 closed. The hot mineral powder, the phase change material with a higher phase change temperature, and the phase change material with a lower phase change temperature are respectively added into each hopper 81. Since the hopper 81 is fixedly connected to the feeding shaft 7 through the connecting shaft 82, the weighing frame 6 is fixedly arranged on the weighing assembly 5, and the feeding shaft 7 is arranged on the weighing frame 6, the weighing assembly 5 can weigh the materials in each hopper 81. When the rotation of the feeding shaft 7 makes the hopper 81 reach directly above the stirring space 21, the driving plug shaft 83 withdraws upward from the hopper 81, thus opening the lower end of the hopper 81, so that the materials in the hopper 81 fall into the stirring space 21. The stirring assembly is used to stir the materials in this stirring space 21, so as to prepare the dual-phase change asphalt mixture. Since the weighing assembly 5 can weigh the materials in each hopper 81, the problem that there is a lack of a device for preparing a dual-phase change self-regulating temperature asphalt mixture with a weighing function in the market can be avoided.
[0029] When the opening and closing plate 3 slides to open the lower end of the stirring space 21, the well-stirred dual-phase change asphalt mixture in the stirring space 21 can fall from the stirring space 21, and a container or a transport vehicle for receiving the materials can be arranged below the stirring space 21.
[0030] In some embodiments, the above-mentioned stirring assembly can adopt the structure as Figures 1 to 4 shown. Refer to Figures 1 to 4 , the stirring assembly includes a vertical frame 41, a stirring shaft 42, a driving assembly and a plurality of stirring blades 44. The vertical frame 41 is fixedly arranged on the stirring container 2. The stirring shaft 42 is vertically arranged and rotatably arranged on the vertical frame 41, and a section of the stirring shaft 42 is located in the stirring space 21. The driving assembly is used to drive the stirring shaft 42 to rotate. A plurality of stirring blades 44 are located in the stirring space 21, and the plurality of stirring blades 44 are evenly distributed around the stirring shaft 42 and fixedly connected to the stirring shaft 42. The driving assembly drives the stirring shaft 42 to rotate, so as to make the plurality of stirring blades 44 stir the materials in this stirring space 21.
[0031] In some embodiments, refer to Figure 1 , the weighing frame 6 has a horizontally arranged first fixing plate 61, the feeding shaft 7 rotatably penetrates the first fixing plate 61, and two outwardly protruding first limiting parts 71 are arranged on the side wall of the feeding shaft 7, and the two first limiting parts 71 are respectively attached to the upper surface and the lower surface of the first fixing plate 61. The two first limiting parts 71 can limit the movement of the feeding shaft 7 in the vertical direction, so as to realize the rotatable arrangement of the feeding shaft 7 on the weighing frame 6.
[0032] In some embodiments, the weighing assembly 5 uses an electronic scale, which facilitates reading the weighing value. When the weighing of the materials placed in one of the hoppers 81 is completed, the display of the electronic scale can be reset to zero, and then the materials placed in the next hopper 81 can be weighed.
[0033] In some embodiments, referring to Figures 1 to 4 , the mixing container 2 further has a heating chamber 22 surrounding the mixing space 21. The dual-phase change self-regulating temperature asphalt mixture preparation device further includes an air inlet pipe 9, an air outlet pipe 10, an electric heating rod 110, and a fixing member 120. One end of the air inlet pipe 9 is fixedly connected to the mixing container 2 and communicates with the heating chamber 22. One end of the air outlet pipe 10 is fixedly connected to the mixing container 2 and communicates with the heating chamber 22. The electric heating rod 110 is disposed through the mixing shaft 42. The fixing member 120 is fixedly connected to both the electric heating rod 110 and the vertical frame 41. The electric heating rod 110 is fixed to the vertical frame 41 through the fixing member 120. In the prior art, during the preparation of the dual-phase change self-regulating temperature asphalt mixture, it is necessary to heat the materials in the mixing space 21. The air inlet pipe 9 is used to introduce steam, and the steam enters the heating chamber 22 through the air inlet pipe 9 and then flows out of the heating chamber 22 through the air outlet pipe 10. In this way, the heat of the steam heats the materials in the mixing space 21 from the surrounding to the middle through the side wall of the mixing space 21. The heat generated by the electric heating rod 110 heats the materials in the mixing space 21 from the middle to the surrounding through the mixing shaft 42. Through the above double heating measures, the materials in the mixing space 21 can be heated evenly. In this embodiment, the steam can be generated by a steam generator. The electric heating rod 110 and the mixing shaft 42 can rotate relative to each other.
[0034] In some embodiments, referring to Figure 1 and Figure 3 , the dual-phase change self-regulating temperature asphalt mixture preparation device further includes a reinforcing member 130. The reinforcing member 130 is fixed to the bottom surface of the opening and closing plate 3. By means of the reinforcing member 130, the strength of the opening and closing plate 3 can be increased, thereby preventing the opening and closing plate 3 from deforming.
[0035] In some embodiments, referring to Figure 1 and Figure 3 , the dual-phase change self-regulating temperature asphalt mixture preparation device further includes two fixed shafts 140. The two fixed shafts 140 are respectively located on both sides of the opening and closing plate 3. The fixed shafts 140 are arranged along the sliding direction of the opening and closing plate 3 and are fixedly connected to the bracket 1. Among them, the reinforcing member 130 is slidably sleeved on the two fixed shafts 140. Through the sliding fit between the reinforcing member 130 and the fixed shafts 140, the sliding connection between the opening and closing plate 3 and the bracket 1 can be realized.
[0036] In some embodiments, referring to Figure 1 and Figure 3, the dual-phase self-regulating temperature asphalt mixture preparation device further includes a hydraulic cylinder 150. The cylinder body of the hydraulic cylinder 150 is fixedly connected to the support 1, and the piston rod of the hydraulic cylinder 150 can extend and retract along the length direction of the fixed shaft 140 and is fixedly connected to the reinforcement member 130. The extension and retraction of the piston rod of the hydraulic cylinder 150 can drive the opening and closing plate 3 to slide along with the reinforcement member 130.
[0037] As a variant embodiment of this embodiment, the hydraulic cylinder 150 can be changed to a pneumatic cylinder or an electric push rod.
[0038] In some embodiments, referring to Figure 2 , the vertical frame 41 has a horizontally arranged second fixing plate 411. The stirring shaft 42 can rotatably penetrate the second fixing plate 411. The side wall of the stirring shaft 42 has two outwardly protruding second limiting portions 421, and the two second limiting portions 421 are respectively attached to the upper surface and the lower surface of the second fixing plate 411. The two second limiting portions 421 can limit the movement of the stirring shaft 42 in the vertical direction, thereby realizing that the stirring shaft 42 is rotatably arranged on the vertical frame 41. In this embodiment, the fixing member 120 is fixedly connected to the second fixing plate 411, thereby realizing the fixed connection between the fixing member 120 and the vertical frame 41.
[0039] In some embodiments, the above-mentioned feature driving assembly can adopt the structure as shown in Figure 2 . Referring to Figure 2 , the driving assembly includes a driving motor 431 and two meshing gears 432. The driving motor 431 is fixedly arranged on the second fixing plate 411. The two meshing gears 432 are respectively sleeved and fixed on the stirring shaft 42 and the output shaft of the driving motor 431. The output shaft of the driving motor 431 drives the stirring shaft 42 to rotate through the two meshing gears 432.
[0040] The above are only the preferred embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent replacements, and improvements made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.
Claims
1. A dual-phase variable self-temperature regulating asphalt mixture preparation device, characterized in that: include: Bracket; A stirring container is fixedly mounted on the support, wherein the stirring container has a stirring space, and both upper and lower ends of the stirring space are open ends; An opening and closing plate is located below the stirring container, the opening and closing plate is horizontally arranged and slidably connected with the bracket in a horizontal direction, so that the opening and closing plate can open and close the lower end of the stirring space; A stirring component, used for stirring the material in the stirring space; A weighing assembly is fixed on the bracket; A weighing frame, fixedly mounted on the weighing assembly; A feeding shaft is vertically arranged and rotatably arranged on the weighing frame; A plurality of feeding units are evenly distributed around the feeding shaft, the feeding units are located above the mixing container, the feeding units include a hopper, a connecting shaft, a blocking shaft and a supporting member, the axis of the hopper is vertically arranged, the two ends of the connecting shaft are respectively fixedly connected to the hopper and the feeding shaft, the blocking shaft is slidably arranged in the hopper to block the lower end of the hopper, and the supporting member is located on the hopper and is fixedly connected to the blocking shaft; The rotation of the feeding shaft can enable the plurality of hoppers to arrive directly above the stirring space in sequence.
2. A dual-phase variable self-temperature regulating asphalt mixture preparation device as claimed in claim 1, characterized in that: The stirring assembly comprises: A stand, fixedly mounted on the stirring container; A stirring shaft is vertically arranged and rotatably arranged on the stand, wherein one section of the stirring shaft is located in the stirring space; A driving assembly, used for driving the stirring shaft to rotate; A plurality of stirring blades are located in the stirring space, and the plurality of stirring blades are evenly distributed around the stirring shaft and are fixedly connected to the stirring shaft.
3. A dual-phase variable self-temperature regulating asphalt mixture preparation device as claimed in claim 1, characterized in that: The weighing frame has a horizontally arranged first fixed plate, the feeding shaft can rotate to penetrate the first fixed plate, and the side wall of the feeding shaft has two first limiting parts protruding outward, and the two first limiting parts are respectively in contact with the upper surface and the lower surface of the first fixed plate.
4. A dual-phase variable self-temperature regulating asphalt mixture preparation device as claimed in claim 1, characterized in that: The weighing component adopts an electronic scale.
5. A dual-phase variable self-temperature regulating asphalt mixture preparation device as claimed in claim 2, characterized in that: The stirring container also has a heating chamber surrounding the stirring space, and the dual-phase variable self-temperature regulating asphalt mixture preparation device also includes: An air inlet pipe, one end of which is fixedly connected to the stirring container and communicated with the heating chamber; An air outlet pipe, one end of which is fixedly connected to the stirring container and communicated with the heating chamber; an electric heating rod, which is inserted into the stirring shaft; and A fixing member is fixedly connected to the electric heating rod and the stand.
6. A dual-phase variable self-temperature regulating asphalt mixture preparation device as claimed in claim 2, characterized in that: Also includes: The reinforcing member is fixedly arranged on the bottom surface of the opening and closing plate.
7. A dual-phase variable self-temperature regulating asphalt mixture preparation device as claimed in claim 6, characterized in that: Also includes: Two fixed shafts, respectively located on both sides of the opening and closing plate, the fixed shafts are arranged along the sliding direction of the opening and closing plate and are fixedly connected to the bracket; Wherein, the reinforcing member is slidably sleeved on the two fixed shafts.
8. A dual-phase variable self-temperature regulating asphalt mixture preparation device as claimed in claim 7, characterized in that: Also includes; A hydraulic cylinder, a cylinder body of which is fixedly connected to the bracket, and a piston rod of the hydraulic cylinder can be extended and retracted along the length direction of the fixed axis and is fixedly connected to the reinforcement member.
9. A dual-phase variable self-temperature regulating asphalt mixture preparation device as claimed in claim 2, characterized in that: The stand has a second horizontally arranged fixed plate, the stirring shaft can rotate and penetrate the second fixed plate, the side wall of the stirring shaft has two second limiting parts protruding outward, and the two second limiting parts are respectively fitted with the upper surface and the lower surface of the second fixed plate.
10. A dual-phase variable self-temperature regulating asphalt mixture preparation device as claimed in claim 9, characterized in that: The drive assembly comprises: A driving motor is fixed on the second fixing plate; Two meshing gears are respectively sleeved and fixed on the stirring shaft and the output shaft of the driving motor.