Asphalt concrete stirring device
By introducing a telescopic device and a screw drive mechanism into the mixing device, the flexible extension and retraction of the rotating shaft is achieved, which solves the problem of uneven mixing in traditional mixing devices, improves the mixing uniformity and efficiency, adapts to asphalt concrete raw materials with different properties, and reduces energy consumption.
Patent Information
- Application Number
- CN202520455094.5
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-03-14
- Publication Date
- 2026-02-10
- Estimated Expiration
- 2035-03-14
AI Technical Summary
Traditional asphalt concrete mixing equipment has a limited mixing range, making it difficult to fully and evenly mix every corner of the container, especially for asphalt concrete raw materials with high viscosity, resulting in the finished product quality failing to meet ideal standards.
The telescopic device drives the rotating shaft to extend and retract within the mixing tank, which, combined with the spiral mixing blades, expands the mixing range. The extension and retraction of the rotating shaft is precisely controlled by the screw drive mechanism to ensure all-round mixing.
It significantly improves mixing uniformity and efficiency, can adapt to asphalt concrete raw materials with different viscosity and properties, broadens the application range of the equipment, and reduces energy consumption and production costs.
Smart Images
Figure CN223893186U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the technical field of mixing devices, specifically an asphalt concrete mixing device. Background Technology
[0002] In the field of road construction, asphalt concrete mixing plants play a crucial role. Traditional asphalt concrete mixing plants typically consist of a support frame, a mixing tank, and a mixing assembly. The mixing assembly mainly comprises a power mechanism and a rotating shaft. One end of the rotating shaft extends into the mixing tank through a shaft hole, while the other end is connected to the output end of the power mechanism. The power mechanism drives the rotating shaft to rotate, thereby achieving the mixing operation of the asphalt concrete.
[0003] However, these traditional mixing devices have certain limitations. In actual mixing, because the positions of the rotating shaft and mixing blades are relatively fixed, the mixing range is limited, making it difficult to fully and evenly mix the material in every corner of the container. This is especially true for some highly viscous asphalt concrete raw materials, which can easily lead to uneven mixing, resulting in the finished product failing to meet ideal standards and affecting the service life and performance of the paved road.
[0004] Based on the problems existing in the traditional mixing device, there is an urgent need to develop a new type of mixing device to effectively improve the mixing effect, ensure the mixing quality of asphalt concrete, and meet the growing needs of road construction. Utility Model Content
[0005] In view of the shortcomings of the prior art, this utility model provides an asphalt concrete mixing device.
[0006] The technical solution adopted by this utility model is: an asphalt concrete mixing device, including a support, a mixing tank and a mixing assembly. The mixing assembly includes a power mechanism, a rotating shaft and a spiral mixing blade. One end of the rotating shaft extends into the mixing tank from the shaft hole, and the other end is connected to the output end of the power mechanism. It also includes a telescopic device. The rotating shaft is sealed and slidably fitted with the shaft hole. The telescopic device is used to drive the rotating shaft to be pulled out and extended into the shaft hole.
[0007] Furthermore, the telescopic device includes a connecting block connected between the rotating shaft and the output end of the power mechanism, a connecting arm fixedly connected to the connecting block, a guide rail fixed on the bracket, and a screw drive mechanism for driving the connecting arm to reciprocate along the guide rail.
[0008] Furthermore, the screw drive mechanism includes a screw motor, a reducer connected to the output end of the screw motor, a screw connected to the output end of the reducer, and a screw block that cooperates with the screw drive. The screw extends into the screw groove of the guide rail. The screw groove has long grooves on both the upper and lower sides. The screw block has guide rods extending from the long grooves at both ends. The guide rods are fixedly connected to the connecting arm.
[0009] Furthermore, the end of the connecting arm away from the connecting block is provided with a sleeve frame fitted on the guide rail, and rollers are provided on both sides of the sleeve frame. The outer ring of the rollers is provided with a rolling groove, and the two sides of the guide rail are provided with protrusions that are adapted to the rolling groove.
[0010] Furthermore, the support includes a base plate, a left support plate fixed to one side of the base plate, a fixed column fixed to the other side of the base plate, and an upper base plate fixed to the left support plate and the fixed column. The left support plate is welded with a bottom block, and a positioning plate is welded to the bottom block. The positioning plate is provided with a positioning groove that matches the bottom of the mixing tank.
[0011] Furthermore, it also includes a support plate fixed to the base plate, the support plate having a positioning arc groove adapted to the shape of the mixing tank, and the mixing tank and the positioning arc groove of the support plate are welded together.
[0012] Furthermore, a sealing sleeve is fixed inside the shaft hole, and a sealing ring is provided between the sealing sleeve and the rotating shaft.
[0013] The beneficial effects of this utility model are:
[0014] 1. Improved Mixing Uniformity: This patent incorporates a telescopic device that drives the rotating shaft to extend and retract. During the mixing process, the rotating shaft and spiral mixing blades are no longer confined to a fixed position but can extend and retract within the shaft hole, reciprocating at both ends of the mixing drum. This effectively avoids the formation of dead zones in the material mixing, resulting in more thorough and uniform mixing of the asphalt concrete raw materials and significantly improving the quality of the finished product.
[0015] 2. Improved mixing efficiency: Due to the expanded mixing range and enhanced mixing uniformity, materials that previously required a longer mixing time to reach certain quality standards can now be mixed in a shorter time. This not only improves production efficiency but also reduces energy consumption and production costs to some extent.
[0016] 3. Enhanced adaptability: Traditional mixing devices often struggle to accommodate asphalt concrete raw materials with varying viscosities and properties. This device, however, with its flexible mixing mechanism thanks to its telescopic device, can better adapt to materials with diverse characteristics. Whether the raw materials are highly viscous or have good flowability, it can achieve efficient and uniform mixing, greatly expanding the device's applicability.
[0017] In addition to the objectives, features, and advantages described above, this utility model has other objectives, features, and advantages. The present utility model will now be described in further detail with reference to the accompanying drawings. Attached Figure Description
[0018] Figure 1 This is a schematic diagram of the structure of this utility model.
[0019] Figure 2 This is a cross-sectional schematic diagram of the present invention.
[0020] Figure 3 for Figure 2 Enlarged diagram of point A in the middle.
[0021] Figure 4 This is a partial schematic diagram of the present invention.
[0022] Figure 5 for Figure 4 Enlarged diagram of point B in the middle.
[0023] Figure 1-5 Components: 1. Mixing tank; 2. Power mechanism; 3. Rotating shaft; 4. Spiral mixing blade; 5. Shaft hole; 6. Connecting block; 7. Connecting arm; 8. Guide rail; 9. Screw motor; 10. Reducer; 11. Screw; 12. Screw block; 13. Screw groove; 14. Long groove; 15. Guide rod; 16. Sleeve frame; 17. Roller; 18. Roll groove; 19. Raised strip; 20. Base plate; 21. Left support plate; 22. Fixed column; 23. Upper base plate; 24. Base block; 25. Positioning plate; 26. Positioning groove; 27. Support plate; 28. Positioning arc groove; 29. Sealing sleeve; 30. Sealing ring. Detailed Implementation
[0024] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.
[0025] It should be noted that if the embodiments of this utility model involve directional indicators (such as up, down, left, right, front, back, etc.), the directional indicators are only used to explain the relative positional relationship and movement of the components in a certain specific posture (as shown in the figure). If the specific posture changes, the directional indicators will also change accordingly.
[0026] This utility model provides an asphalt concrete mixing device.
[0027] In this embodiment, refer to Figure 1-5The asphalt concrete mixing device includes a support frame, a mixing tank 1, and a mixing assembly. The mixing assembly includes a power mechanism 2, a rotating shaft 3, and a spiral mixing blade 4. One end of the rotating shaft extends into the mixing tank through a shaft hole 5, and the other end is connected to the output end of the power mechanism. It also includes a telescopic device. The rotating shaft is sealed and slidably fitted with the shaft hole. The telescopic device is used to drive the rotating shaft to be pulled out and extended into the shaft hole.
[0028] In the above technical solution, by adding a telescopic device and sealing the sliding fit between the rotating shaft and the shaft hole, the rotating shaft can flexibly extend and retract inside the mixing drum, effectively expanding the mixing range of the spiral mixing blades, ensuring that the asphalt concrete raw materials are mixed in all directions without dead angles inside the mixing drum, and significantly improving the mixing uniformity.
[0029] Specifically, the telescopic device includes a connecting block 6 connected between the rotating shaft and the output end of the power mechanism, a connecting arm 7 fixedly connected to the connecting block 6, a guide rail 8 fixed on the bracket, and a screw drive mechanism for driving the connecting arm to reciprocate along the guide rail.
[0030] In this embodiment, the telescopic device adopts a combined design of a connecting block, a connecting arm, a guide rail, and a screw drive mechanism. The connecting block and the connecting arm effectively connect the power mechanism and the rotating shaft, ensuring the stable transmission of the shaft's telescopic movement; the guide rail provides precise guidance for the movement of the connecting arm, making the shaft's telescopic movement smoother and more reliable; the screw drive mechanism can precisely control the reciprocating motion of the connecting arm, thereby precisely controlling the amount of shaft telescopic movement and ensuring the controllability of the mixing operation.
[0031] Specifically, the screw drive mechanism includes a screw motor 9, a reducer 10 connected to the output end of the screw motor 9, a screw 11 connected to the output end of the reducer 10, and a screw block 12 that drives and cooperates with the screw 11. The screw extends into the screw groove 13 of the guide rail. The screw groove 13 has long grooves 14 on both the upper and lower sides. The screw block has guide rods 15 extending from the long grooves at both ends. The guide rods 15 are fixedly connected to the connecting arm.
[0032] In this embodiment, the screw drive mechanism consists of a screw motor, a reducer, a screw, and a screw block. The screw motor provides power, and the reducer adjusts the speed, allowing the screw to rotate at a suitable speed. This enables precise control of the screw block's movement speed, thereby accurately controlling the extension and retraction speed of the shaft and meeting the requirements of different mixing processes for mixing speed and frequency. The screw block is connected to the connecting arm via a guide rod. Guided by the long groove within the screw groove, the screw block's movement is stable, preventing wobbling and ensuring the stability of the shaft's extension and retraction.
[0033] Specifically, the end of the connecting arm away from the connecting block is provided with a sleeve frame 16 fitted on the guide rail, and rollers 17 are provided on both sides of the sleeve frame 16. The outer ring of the rollers 17 is provided with a rolling groove 18, and the two sides of the guide rail are provided with protrusions 19 that are adapted to the rolling groove.
[0034] In this embodiment, a sleeve frame fitted onto a guide rail is provided at one end of the connecting arm. Rollers and grooves on both sides of the sleeve frame cooperate with protrusions on both sides of the guide rail. The roller design greatly reduces the friction of the connecting arm when it moves on the guide rail, making the reciprocating motion of the connecting arm smoother and reducing energy consumption. At the same time, the fit between the grooves and protrusions further improves the stability and accuracy of the connecting arm's movement, ensures the smoothness of the shaft extension and retraction process, and enhances the reliability of the mixing operation.
[0035] Specifically, the support includes a base plate 20, a left support plate 21 fixed to one side of the base plate 20, a fixing column 22 fixed to the other side of the base plate 21, and an upper base plate 23 fixed to the left support plate and the fixing column. The left support plate is welded with a bottom block 24, and a positioning plate 25 is welded to the bottom block 24. The positioning plate 25 is provided with a positioning groove 26 that matches the bottom of the mixing tank.
[0036] In this embodiment, the support frame adopts a structure consisting of a base plate, a left support plate, a fixed column, and an upper base plate. The left support plate is welded with a bottom block and a positioning plate. This structural design provides stable support for the mixing tank, ensuring the stability of the mixing device during operation. The positioning groove on the positioning plate matches the bottom of the mixing tank, accurately positioning the mixing tank and facilitating its installation and disassembly, thus improving the convenience of equipment assembly and maintenance.
[0037] Specifically, it also includes a support plate 27 fixed on the base plate, the support plate 27 having a positioning arc groove 28 adapted to the shape of the mixing tank, and the mixing tank and the positioning arc groove of the support plate are welded together.
[0038] In this embodiment, a support plate fixed to the base plate is added. The support plate is provided with a positioning arc groove and welded to the mixing tank. The positioning arc groove further enhances the positioning effect of the mixing tank, ensuring that the mixing tank will not shift or shake during operation. The welding connection method makes the mixing tank firmly connected to the support plate, improves the structural strength of the entire mixing device, and ensures the safe and stable operation of the mixing.
[0039] Specifically, a sealing sleeve 29 is fixed inside the shaft hole, and a sealing ring 30 is provided between the sealing sleeve and the rotating shaft.
[0040] In this embodiment, a sealing sleeve is provided inside the shaft hole, and a sealing ring is provided between the sealing sleeve and the rotating shaft to ensure a sliding and sealed connection between the rotating shaft and the mixing tank.
[0041] Attention all technical personnel: Although this utility model has been described according to the specific embodiments above, the concept of this utility model is not limited to this utility model. Any modification that utilizes the concept of this utility model will be included within the scope of protection of this patent right.
Claims
1. An asphalt concrete mixing device, comprising a support frame, a mixing tank, and a mixing assembly, wherein the mixing assembly includes a power mechanism, a rotating shaft, and spiral mixing blades, one end of the rotating shaft extending into the mixing tank through a shaft hole, and the other end connected to the output end of the power mechanism, characterized in that: It also includes a telescopic device, wherein the rotating shaft is in a sealed sliding fit with the shaft hole, and the telescopic device is used to drive the rotating shaft to be pulled out and extended into the shaft hole.
2. The asphalt concrete mixing device according to claim 1, characterized in that: The telescopic device includes a connecting block connected between the rotating shaft and the output end of the power mechanism, a connecting arm fixedly connected to the connecting block, a guide rail fixed on the bracket, and a screw drive mechanism for driving the connecting arm to reciprocate along the guide rail.
3. The asphalt concrete mixing device according to claim 2, characterized in that: The screw drive mechanism includes a screw motor, a reducer connected to the output end of the screw motor, a screw connected to the output end of the reducer, and a screw block that cooperates with the screw drive. The screw extends into the screw groove of the guide rail. The screw groove has long grooves on the upper and lower sides. The screw block has guide rods extending from the long grooves at both ends. The guide rods are fixedly connected to the connecting arm.
4. The asphalt concrete mixing device according to claim 3, characterized in that: The connecting arm has a sleeve frame fitted on the guide rail at one end away from the connecting block. Rollers are provided on both sides of the sleeve frame, and the outer ring of the rollers is provided with a rolling groove. The guide rail has protrusions on both sides that are adapted to the rolling groove.
5. The asphalt concrete mixing device according to claim 1, characterized in that: The support includes a base plate, a left support plate fixed to one side of the base plate, a fixed column fixed to the other side of the base plate, and an upper base plate fixed to the left support plate and the fixed column. The left support plate is welded with a bottom block, and a positioning plate is welded to the bottom block. The positioning plate is provided with a positioning groove that matches the bottom of the mixing tank.
6. The asphalt concrete mixing device according to claim 5, characterized in that: It also includes a support plate fixed to the base plate, the support plate having a positioning arc groove adapted to the shape of the mixing tank, and the mixing tank and the positioning arc groove of the support plate are welded together.
7. The asphalt concrete mixing device according to claim 5, characterized in that: A sealing sleeve is fixed inside the shaft hole, and a sealing ring is provided between the sealing sleeve and the rotating shaft.