Multi-axle linkage crushing and mixing plant for asphalt concrete

Abstract

The utility model discloses asphalt concrete multi -shaft linkage broken stirring equipment relates to asphalt concrete broken, stirring technical field, including: tank body, feed cover, discharge valve plate, and be located on the planetary gear assembly of feed cover, with planetary gear assembly executive end connection and the inside and outside distribution's central axle stirring subassembly, auxiliary crushing component, still include the cam transmission component of setting between central axle stirring subassembly, auxiliary crushing component. The utility model discloses through the division of labor and cooperation of different rotating speed's central axle stirring subassembly, auxiliary crushing component, not only reaches the mixing effect of fast and even, and utilize the design of same drive mode, the significant reduction energy consumption, the design of cam transmission component further, the high -speed rotation power of central axle stirring subassembly is converted to the power of auxiliary crushing component's up and down telescopic, to change auxiliary crushing component's mixing, crushing range, improve mixing, crushing effect.

Description

Technical Field

[0001] This utility model relates to the field of asphalt concrete crushing and mixing technology, specifically to a multi-shaft linkage crushing and mixing equipment for asphalt concrete. Background Technology

[0002] Currently, the recycling process for asphalt pavement materials involves crushing and screening old, waste asphalt concrete pavement materials, and finally mixing them with new asphalt, aggregates, and recycling agents (if necessary) in a certain proportion to generate new, usable asphalt mixtures, which is both environmentally friendly and economical. Most crushing and mixing machines on the market use a single mixing method and a single speed for crushing and mixing, but this method has the following disadvantages in actual use; First, the mixing effect of a single mixing method is limited, especially for raw materials with high hardness such as asphalt concrete, resulting in poor mixing quality; Secondly, if only high-speed stirring is used, although the mixing is fast, the energy consumption is huge and it is easy to cause excessive shearing. If only low-speed stirring is used, although the energy consumption is low, the mixing time will be very long and the efficiency will be low, which may not be able to meet the process requirements. Secondly, the limited cutting and mixing range can easily lead to uneven mixing and crushing. Therefore, a multi-axis linkage crushing and mixing equipment for asphalt concrete is proposed. Utility Model Content

[0003] The purpose of this invention is to provide a multi-shaft linkage crushing and mixing equipment for asphalt concrete. This equipment achieves a fast and uniform mixing effect through the division of labor and cooperation between the central shaft mixing component and the auxiliary crushing component with different rotation speeds. Moreover, the design of the same drive method significantly reduces energy consumption. At the same time, the design of the cam transmission component further converts the high-speed rotation power of the central shaft mixing component into the power of the up and down extension of the auxiliary crushing component, thereby changing the mixing and crushing range of the auxiliary crushing component and improving the mixing and crushing effect.

[0004] To achieve the above objectives, this utility model provides the following technical solution: a multi-axis linkage crushing and mixing equipment for asphalt concrete, comprising: a tank; a feed cover and a discharge valve plate respectively disposed on the upper and lower parts of the tank; a planetary gear assembly disposed on the feed cover; a central shaft mixing assembly and an auxiliary crushing assembly connected to the execution end of the planetary gear assembly and distributed internally and externally; wherein, under the action of the planetary gear assembly, the central shaft mixing assembly and the auxiliary crushing assembly can be synchronously driven and perform differential motion; it also includes a cam transmission assembly disposed between the central shaft mixing assembly and the auxiliary crushing assembly, wherein during the linkage process of the central shaft mixing assembly rotating at high speed and the auxiliary crushing assembly rotating at low speed, the cam transmission assembly can use the high-speed power of the central shaft mixing assembly to drive the auxiliary crushing assembly to extend and retract up and down.

[0005] Preferably, the feed cover includes a ring-shaped block fixed to the upper part of the tank, a top cover fixed to the top of a plurality of the blocks, and feed troughs equidistantly opened on the top cover and communicating with the interior of the tank.

[0006] Preferably, the planetary gear assembly includes a rotating sleeve, a guide rail fixed to the outside of the rotating sleeve, and an inner ring fixed near the top side wall of the tank, wherein the inner ring is embedded in the guide rail and slidably installed with the guide rail; it also includes a cross mounting bracket fixed inside the rotating sleeve, wherein a vertical shaft is rotatably mounted in the middle of the cross mounting bracket, wherein one end of the vertical shaft passes through a first through hole opened in the middle of the top cover and is fixed to a motor output end provided on the top cover, and the other end is assembled with a central shaft stirring assembly; a central gear is also fixed at the end of the vertical shaft near the motor, and a plurality of planetary gears meshing with the central gear, wherein the plurality of planetary gears are rotatably mounted to the bottom of the top cover through a first rotating shaft; and an internal gear ring fixed inside the rotating sleeve and meshing with the plurality of planetary gears.

[0007] Preferably, the central shaft stirring assembly includes a splined shaft fixed to the end of the vertical shaft, and a crushing component and a stirring component are arranged sequentially from top to bottom on the outer periphery of the splined shaft. The crushing component includes a first splined sleeve that is splinedly connected to the splined shaft, and an assembly is fixed in the middle of the first splined sleeve; and a first cutter that is annularly fixed to the outer periphery of the assembly.

[0008] Preferably, the stirring component includes a second spline sleeve splined to the spline shaft and fixed to the bottom end of the first spline sleeve; a fixed post fixed to the bottom of the spline shaft; and a plurality of connecting rods respectively hinged to the second spline sleeve and the fixed post, with the opposite ends of two connecting rods distributed vertically opposite each other being rotatably mounted via a second rotating shaft; and a second cutter fixed to the outside of each connecting rod.

[0009] Preferably, the auxiliary crushing components are arranged in several groups and distributed in a ring at the bottom of the rotating sleeve. Each auxiliary crushing component includes a horizontal plate fixed at the bottom of the rotating sleeve; a telescopic column structure located at the inner end of the horizontal plate, wherein the top end of the telescopic column structure is connected to the cam transmission component, and the bottom end is fixed with an installation frame, and the installation frame is in contact with the inner wall of the tank; and several third cutters fixed on the inner side of the vertical section of the installation frame.

[0010] Preferably, each of the telescopic column structures includes a second through hole opened at the inner end of the horizontal plate, and a telescopic column body is provided in the second through hole. The bottom end of the telescopic column body is fixed to the mounting frame, and a top block is fixed to its top end. A spring is connected between the top block and the outer wall of the telescopic column body between the top block and the horizontal plate.

[0011] Preferably, the cam drive assembly includes a truncated cylindrical sleeve fixed on the spline shaft and in contact with a plurality of top blocks.

[0012] Preferably, a transmission component is also provided between the central shaft stirring assembly and the auxiliary crushing assembly. During the rapid up-and-down extension and retraction of the auxiliary crushing assembly, the transmission component can drive the crushing component and the stirring component to move longitudinally and expand and contract respectively. The transmission component includes a connecting block fixed to the inner end of the horizontal section of one of the mounting frames; and a third spline sleeve splinedly connected to the spline shaft and fixed to the top of the first spline sleeve. The third spline sleeve has a groove, and a transmission ring is rotatably installed with the groove. The transmission ring is fixedly connected to the connecting block.

[0013] Compared with the prior art, the beneficial effects of this utility model are as follows: This invention optimizes the fluid dynamics of different areas inside the tank by using a central shaft mixing assembly and an auxiliary crushing assembly with different rotation speeds, through a division of labor and cooperation. The high-speed rotation in the center is responsible for high-intensity shearing and rapid mixing of local asphalt concrete, while the low-speed rotation around the perimeter is responsible for large-scale mixing and preventing asphalt from adhering to the walls. This linkage design not only achieves a fast and uniform mixing effect, but also further reduces energy consumption by using the same drive method. At the same time, the design of the cam transmission assembly further converts the high-speed rotation power of the central shaft mixing assembly into the power of the up-and-down extension of the auxiliary crushing assembly, thereby changing the mixing and crushing range of the auxiliary crushing assembly and improving the mixing and crushing effect. Attached Figure Description

[0014] Figure 1 This is a first-view perspective three-dimensional structural diagram of the present invention; Figure 2 This is a second-view perspective three-dimensional structural diagram of the present invention; Figure 3 This is a side view of the structure of this utility model; Figure 4 This is a schematic diagram of the cross-sectional structure of AA; Figure 5 This is a schematic diagram of the cross-sectional structure of BB; Figure 6 This is a schematic diagram of the cross-sectional structure of DD.

[0015] In the diagram: 111, Tank body; 112, Vertical block; 113, Top cover; 114, Feed chute; 115, Discharge valve plate; 2111, Vertical shaft; 2112, Cross mounting bracket; 212, Motor; 213, Splined shaft; 214, Third splined sleeve; 215, First splined sleeve; 216, Second splined sleeve; 217, Fixed column; 218, Connecting rod; 219, Second cutter; 220, Assembly kit; 221, First cutter; 222, Transmission ring; 223, Connecting block; 311, Rotating sleeve; 312, Horizontal plate; 313, Telescopic column; 314, Top block; 315, Spring; 316, Mounting frame; 317, Third cutter; 318, Beveled cylindrical sleeve; 319, Guide rail; 411, Central gear; 412, Planetary gear; 414, Internal gear ring. Detailed Implementation

[0016] In the description of this utility model, it should be understood that the terms "length," "width," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," and "outer," etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the accompanying drawings and are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model. The various embodiments of this utility model are described in detail below with reference to the accompanying drawings.

[0017] Example 1 Please see Figures 1 to 6 The present invention preferably provides a technical solution: a multi-axis linkage crushing and mixing equipment for asphalt concrete, comprising: a tank 111; a feed cover and a discharge valve plate 115 respectively disposed on the upper and lower parts of the tank 111; a planetary gear assembly disposed on the feed cover; a central shaft mixing assembly and an auxiliary crushing assembly connected to the execution end of the planetary gear assembly and distributed internally and externally; wherein, under the action of the planetary gear assembly, the central shaft mixing assembly and the auxiliary crushing assembly can be synchronously driven and perform differential motion; and further comprising a cam transmission assembly disposed between the central shaft mixing assembly and the auxiliary crushing assembly, wherein, during the linkage process of the central shaft mixing assembly rotating at high speed and the auxiliary crushing assembly rotating at low speed, the cam transmission assembly can use the high-speed power of the central shaft mixing assembly to drive the auxiliary crushing assembly to extend and retract up and down.

[0018] In this example, as Figure 1 , 2 As shown in Figure 3, the main body of the equipment consists of a tank 111, a feed cover mounted on the upper and lower parts of the tank 111, and a discharge valve plate 115. The discharge valve plate 115 is a mature existing technology and will not be described in detail here. The planetary gear assembly mounted on the feed cover has an internally and externally distributed central shaft stirring assembly and auxiliary crushing assembly at its actuating end, such as... Figure 4 ,5 As shown in Figure 6, due to the special structure of the planetary gear assembly, there is a certain speed difference between the central shaft stirring assembly and the auxiliary crushing assembly during operation. Specifically, the speed of the central shaft stirring assembly located in the middle is significantly greater than that of the auxiliary crushing assembly located on the outer periphery. This optimizes the fluid dynamics of different areas inside the tank 111, thereby resolving the contradiction that a single-speed stirrer cannot take care of everything. The specific advantages are as follows. First, the crushing and mixing are more uniform and efficient. It is known that the rotation speed of the central shaft mixing component is greater than that of the auxiliary crushing component. The high-speed operation of the central shaft mixing component can be responsible for high-intensity shearing and rapid mixing of local asphalt concrete, and can quickly crush the concrete to promote micro-mixing. The low-speed crushing and mixing of the auxiliary crushing component can be responsible for macro-circulation and overall uniformity, so that it can circulate over a wide range within the tank 111 and transport the material to the high-speed zone to prevent asphalt from adhering to the wall. This application combines the two, which not only ensures the high efficiency of mixing and crushing, but also ensures the uniformity of mixing. Secondly, existing mixing equipment, if only high-speed mixing is used, although mixing is fast, it consumes a lot of energy and is prone to excessive shearing. If only low-speed mixing is used, although energy consumption is low, the mixing time will be long and the efficiency will be low, which may not meet the process requirements. This application uses only a planetary gear assembly to link the central shaft mixing assembly and the auxiliary crushing assembly to reduce the overall energy consumption and achieve the best balance between efficiency and energy consumption. Furthermore, this application also provides a cam transmission assembly between the central shaft stirring assembly and the auxiliary crushing assembly, which further converts the high-speed rotational power of the central shaft stirring assembly into the power for the up-and-down extension of the auxiliary crushing assembly, thereby changing the mixing and crushing range of the auxiliary crushing assembly and improving the mixing and crushing effect.

[0019] Furthermore, the feed cover includes a ring-shaped block 112 fixed to the upper part of the tank body 111, a top cover 113 fixed to the top of several blocks 112, and feed troughs 114 equidistantly opened on the top cover 113 and communicating with the interior of the tank body 111, such as... Figure 1 , 4 As shown.

[0020] Example 2 In another embodiment of this utility model, the planetary gear assembly includes a rotating sleeve 311, a guide rail 319 fixed to the outside of the rotating sleeve 311, and an inner ring fixed near the top side wall of the tank 111, the inner ring being embedded in the guide rail 319 and slidably mounted with the guide rail 319; it also includes a cross mounting bracket 2112 fixed inside the rotating sleeve 311, a vertical shaft 2111 rotatably mounted in the middle of the cross mounting bracket 2112, wherein one end of the vertical shaft 2111 passes through a first through hole opened in the middle of the top cover 113 and is fixed to the output end of the motor 212 provided on the top cover 113, and the other end is assembled with the central shaft stirring assembly; a central gear 411 is also fixed at the end of the vertical shaft 2111 near the motor 212, and a plurality of planetary gears 412 meshing with the central gear 411, wherein the plurality of planetary gears 412 are rotatably mounted to the bottom of the top cover 113 through a first rotating shaft; and an internal gear ring 414 fixed inside the rotating sleeve 311 and meshing with the plurality of planetary gears 412.

[0021] like Figure 4 As shown, the rotating sleeve 311, located on the upper part of the tank 111, has a guide rail 319 on its outer side that is slidably installed with the inner ring on the top of the tank 111. The vertical shaft 2111, mounted on the cross mounting bracket 2112 on its inner side, has one end fixed to the motor 212 and the other end assembled with the central shaft stirring assembly. Simultaneously, the central gear 411 fixed on the vertical shaft 2111 meshes with several planetary gears 412, which in turn mesh with the internal gear ring 414. Figure 4 , 6 As shown, when the motor 212 is running, the vertical shaft 2111 fixed to the motor 212 can drive the central shaft stirring assembly mounted on it to rotate. During the rotation of the vertical shaft 2111, the central gear 411, planetary gear 412 and internal gear ring 414, which are distributed from the inside out and mesh with each other, make the linear speed of the rotating sleeve 311 significantly slower than that of the vertical shaft 2111. As a result, although the auxiliary crushing assembly mounted on the rotating sleeve 311 rotates synchronously with the central shaft stirring assembly mounted on the vertical shaft 2111, the former's speed is significantly lower than that of the latter.

[0022] Example 3 In another embodiment of this utility model, the central shaft stirring assembly includes a splined shaft 213 fixed to the end of the vertical shaft 2111. A crushing component and a stirring component are sequentially arranged from top to bottom on the outer periphery of the splined shaft 213. The crushing component includes a first splined sleeve 215 splinedly connected to the splined shaft 213, with a mounting kit 220 fixed in the middle of the first splined sleeve 215; and a first cutter 221 annularly fixed to the outer periphery of the mounting kit 220. Further, the stirring component includes a second splined sleeve 216 splinedly connected to the splined shaft 213 and fixed to the bottom end of the first splined sleeve 215; a fixed column 217 fixed to the bottom of the splined shaft 213; and several connecting rods 218 respectively hinged to the second splined sleeve 216 and the fixed column 217. Two connecting rods 218 distributed vertically opposite each other are rotatably mounted at their opposite ends via a second rotating shaft. A second cutter 219 is also fixed to the outer side of each connecting rod 218.

[0023] In this embodiment, the spline shaft 213 is fixed to the bottom end of the vertical shaft 2111, and the crushing and mixing components mounted on the spline shaft 213 can quickly crush and mix the asphalt concrete inside the tank 111 when the vertical shaft 2111 rotates at high speed. Specifically, such as Figure 4 , 5 As shown, the crushing component includes a fitting 220 splinedly connected to the splined shaft 213 and a first cutter 221 annularly arranged on the fitting 220. The mixing component is located in a second splined sleeve 216 splinedly connected to the splined shaft 213. A fixed column 217 is fixed to the bottom of the splined shaft 213. Several connecting rods 218 are hinged between the second splined sleeve 216 and the fixed column 217. Each connecting rod 218 has a connecting rod 218 fixed on its outer side. The upper and lower connecting rods 218 rotate through a second rotating shaft. Therefore, when the vertical shaft 2111 and the splined shaft 213 rotate, the several first cutters 221, several connecting rods 218, and several second cutters 219 can realize the crushing and mixing of asphalt concrete.

[0024] Example 4 In another embodiment of this utility model, several sets of auxiliary crushing components are arranged in a ring at the bottom of the rotating sleeve 311. Each auxiliary crushing component includes a horizontal plate 312 fixed at the bottom of the rotating sleeve 311; a telescopic column structure located at the inner end of the horizontal plate 312, wherein the top end of the telescopic column structure is connected to the cam transmission component, and the bottom end is fixed with a mounting frame 316, and the mounting frame 316 is in contact with the inner wall of the tank 111; and several third cutters 317 fixed on the inner side of the vertical section of the mounting frame 316; further, each telescopic column structure includes a second through hole opened at the inner end of the horizontal plate 312, and a telescopic column 313 is provided in the second through hole, wherein the bottom end of the telescopic column 313 is fixed to the mounting frame 316, the top end is fixed with a top block 314, and a spring 315 is connected between the top block 314 and the outer wall of the telescopic column 313; further, the cam transmission component includes a truncated cylindrical sleeve 318 fixed on the spline shaft 213 and in contact with several top blocks 314.

[0025] like Figure 4 , 5 As shown, several sets of auxiliary crushing components are distributed in a ring at the bottom of the rotating sleeve 311. As can be seen from the above, the rotating sleeve 311 is fixed to the inner gear ring 414 where the planetary gear assembly is located. Therefore, when the motor 212 is running, the central shaft stirring assembly and the auxiliary crushing components can be operated synchronously. The telescopic column structure where the individual auxiliary crushing component is located is fixed to the bottom of the rotating sleeve 311 via the horizontal plate 312. Each telescopic column structure includes a telescopic column body 313. The top block 314 fixed at the top of the telescopic column 313 contacts the oblique cylindrical sleeve 318 where the cam transmission component is located. A mounting frame 316 is fixed at its bottom. Several third cutters 317 are fixed inside the vertical section where the mounting frame 316 is located. Figure 5 As shown, in conjunction with spring 315, when the oblique cylindrical sleeve 318 fixed to the vertical shaft 2111 rotates at high speed relative to the several telescopic column structures, the oblique cylindrical sleeve 318 can push the several telescopic column structures to move up and down, thus realizing that the several telescopic column structures rotate at low speed and move up and down at high frequency, further enabling the several third cutters 317 to change their working range while realizing stirring and crushing, so as to improve the mixing and crushing effect.

[0026] Example 5 In another embodiment of this utility model, a transmission component is also provided between the central shaft stirring assembly and the auxiliary crushing assembly. During the rapid up-and-down extension and retraction of the auxiliary crushing assembly, the transmission component can drive the crushing component and the stirring component to move longitudinally and expand and contract respectively. The transmission component includes a connecting block 223 fixed to the inner end of the horizontal section of one of the mounting frames 316; and a third spline sleeve 214 splinedly connected to the spline shaft 213 and fixed to the top of the first spline sleeve 215. The third spline sleeve 214 has a groove, and a transmission ring 222 is rotatably installed with the groove. The transmission ring 222 is fixedly connected to the connecting block 223.

[0027] like Figure 4 , 5 As shown, the third spline sleeve 214 is fitted onto the spline shaft 213 and fixed to the top of the first spline sleeve 215. The transmission ring 222 rotatably mounted on the third spline sleeve 214 is fixed to one of the mounting frames 316 via a connecting block 223. Therefore, when one of the telescopic column structures extends or retracts longitudinally, it can drive the mounting frame 316 on it to extend or retract longitudinally, further driving the third spline sleeve 214, the first spline sleeve 215, and the second spline sleeve 216 to move synchronously longitudinally on the spline shaft 213. Figure 5 As shown, when the first spline sleeve 215 moves longitudinally, the crushing position of the crushing component is changed, while the longitudinal movement of the second spline sleeve 216 switches the expansion and contraction states of the stirring component. This design can fully crush and mix the bottom of the tank 111.

[0028] In this utility model, unless otherwise explicitly specified and limited, the terms "installation", "connection", "fixation" and other terms should be interpreted broadly. For example, it can be a fixed connection, a detachable connection, or an integral part. There are various ways to install detachably, such as by using a plug-in and snap-fit ​​method, or by using a bolt connection, etc.

[0029] The above description of the specific embodiments of this utility model is only used to further illustrate this utility model and should not be construed as limiting the scope of protection of this utility model. Any non-essential improvements and adjustments made to this utility model by technical engineers based on the above description of the utility model shall fall within the scope of protection of this utility model.

Claims

1. A multi-shaft linkage crushing and mixing equipment for asphalt concrete, characterized in that... ,include: Tank body (111); The feed cover and discharge valve plate (115) are respectively installed on the upper and lower parts of the tank body (111). A planetary gear assembly is provided on the feed cover. The planetary gear assembly is connected to an inner and outer central shaft stirring assembly and an auxiliary crushing assembly at its actuating end. Under the action of the planetary gear assembly, the central shaft stirring assembly and the auxiliary crushing assembly can be driven synchronously and perform differential motion. The cam drive assembly, located between the central shaft stirring assembly and the auxiliary crushing assembly, can utilize the high-speed power of the central shaft stirring assembly to drive the auxiliary crushing assembly to extend and retract up and down during the linkage process of the central shaft stirring assembly rotating at high speed and the auxiliary crushing assembly rotating at low speed.

2. The asphalt concrete multi-shaft linkage crushing and mixing equipment according to claim 1, characterized in that: The feed cover includes: A ring-shaped block (112) is fixed to the upper part of the tank body (111). A top cover (113) fixed to the top of several of the aforementioned blocks (112); And a feed chute (114) that is equidistantly provided on the top cover (113) and communicates with the inside of the tank body (111).

3. The asphalt concrete multi-shaft linkage crushing and mixing equipment according to claim 2, characterized in that: The planetary gear assembly includes: Switch (311); A guide rail (319) is fixed to the outside of the rotating sleeve (311). An inner ring is fixed to the top side wall near the tank body (111), the inner ring being embedded in the guide rail (319) and slidably mounted with the guide rail (319); A cross mounting bracket (2112) is fixed inside the rotating sleeve (311). A vertical shaft (2111) is rotatably mounted in the middle of the cross mounting bracket (2112). One end of the vertical shaft (2111) passes through the first through hole in the middle of the top cover (113) and is fixed to the output end of the motor (212) provided on the top cover (113). The other end is assembled with the central shaft stirring assembly. A central gear (411) is fixed at one end of the vertical shaft (2111) near the motor (212). A plurality of planetary gears (412) mesh with the central gear (411), wherein the plurality of planetary gears (412) are rotatably mounted to the bottom of the top cover (113) via a first rotating shaft; And an internal gear ring (414) fixed inside the rotating sleeve (311) and meshing with a plurality of planetary gears (412).

4. The asphalt concrete multi-shaft linkage crushing and mixing equipment according to claim 3, characterized in that: The central axis stirring assembly includes: A splined shaft (213) is fixed at the end of the vertical shaft (2111). The outer periphery of the splined shaft (213) is provided with a crushing component and a stirring component from top to bottom. The crushing component includes a first spline sleeve (215) that is splinedly connected to the splined shaft (213). A fitting (220) is fixed in the middle of the first spline sleeve (215). And a first cutter (221) that is annularly fixed to the outer periphery of the assembly (220).

5. The asphalt concrete multi-shaft linkage crushing and mixing equipment according to claim 4, characterized in that: The stirring component includes: The spline is connected to the second spline sleeve (216) on the spline shaft (213) and fixed to the bottom end of the first spline sleeve (215). Fixed column (217) at the bottom of the spline shaft (213); And several connecting rods (218) respectively hinged to the second spline sleeve (216) and the fixed column (217), and the opposite ends of two connecting rods (218) distributed vertically are rotatably installed through the second rotating shaft; A second cutter (219) is also fixed to the outside of each of the aforementioned links (218).

6. The asphalt concrete multi-shaft linkage crushing and mixing equipment according to claim 4, characterized in that: The auxiliary crushing components are arranged in several groups and distributed in a ring at the bottom of the rotating sleeve (311), and each auxiliary crushing component includes: A horizontal plate (312) is fixed at the bottom of the rotating sleeve (311); A telescopic column structure is provided on the inner end of the horizontal plate (312), wherein the top end of the telescopic column structure is connected to the cam transmission assembly, and the bottom end is fixed with an installation frame (316), and the installation frame (316) is in contact with the inner wall of the tank (111). And a number of third cutters (317) fixed inside the vertical section of the mounting frame (316).

7. The asphalt concrete multi-shaft linkage crushing and mixing equipment according to claim 6, characterized in that: Each of the telescopic column structures includes a second through hole opened at the inner end of the horizontal plate (312), and a telescopic column (313) is provided in the second through hole. The bottom end of the telescopic column (313) is fixed to the mounting frame (316), and a top block (314) is fixed to its top end. A spring (315) is connected between the top block (314) and the outer wall of the telescopic column (313) of the horizontal plate (312).

8. The asphalt concrete multi-shaft linkage crushing and mixing equipment according to claim 4, characterized in that: The cam drive assembly includes a truncated cylindrical sleeve (318) fixed on the spline shaft (213) and in contact with a plurality of top blocks (314).

9. The asphalt concrete multi-shaft linkage crushing and mixing equipment according to claim 6, characterized in that: A transmission component is also provided between the central shaft stirring assembly and the auxiliary crushing assembly. During the rapid up-and-down extension and retraction of the auxiliary crushing assembly, the transmission component can drive the crushing component and the stirring component to move longitudinally and expand and contract respectively. The transmission component includes: A connecting block (223) is fixed to the inner end of the horizontal section of one of the mounting frames (316). And a third spline sleeve (214) splinedly connected to the spline shaft (213) and fixed to the top of the first spline sleeve (215), wherein the third spline sleeve (214) has a groove. A transmission ring (222) is rotatably mounted to the groove, and the transmission ring (222) is fixedly connected to the connecting block (223).

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