Waste asphalt crushing and recycling device for municipal road construction

Abstract

The utility model discloses a waste asphalt smashing and recycling device for municipal road construction, and relates to the technical field of road construction, the waste asphalt smashing and recycling device comprises a bottom plate, a mounting frame and a recycling bin, the upper side of the mounting frame is fixedly provided with a double-acting mechanism and a fine smashing mechanism, and the upper side of the fine smashing mechanism is fixedly provided with a primary smashing mechanism; according to the waste asphalt crushing device, the rotating cutter is meshed with the fixed cutters on the two sides in a staggered mode, waste asphalt blocks are crushed into small blocks, the small blocks fall on the first-stage screen, and finally the small blocks are transferred into the shell composed of the upper cover and the second-stage screen. The small asphalt blocks are further crushed again by the rotating grinding roller, the asphalt meeting the particle size passes through the secondary screen, is recycled by the recycling bin and is crushed for multiple times in two steps by the primary crushing mechanism and the fine crushing mechanism, the waste asphalt blocks are crushed into particles meeting the reuse requirement, and the particle size is ensured to be in a proper range interval; the use effect is improved.

Description

Technical Field

[0001] This utility model relates to the field of highway construction technology, and in particular to a waste asphalt crushing and recycling device for municipal highway construction. Background Technology

[0002] With the accelerating pace of urbanization, the construction of municipal roads is booming. Asphalt, a widely used road paving material, is extensively used due to its excellent adhesion, water resistance, and wear resistance. During the construction and maintenance of municipal roads, projects such as road renovation and widening generate a considerable amount of waste asphalt material.

[0003] However, traditional crushing processes and equipment have significant limitations. Many existing waste asphalt crushing devices employ relatively simple crushing methods, such as simple hammer mills or roller mills. While hammer mills have a large impact force, they are prone to uneven force distribution on materials like asphalt, which have a certain degree of viscosity and toughness. Because the point of impact and force of the hammer blows are difficult to control precisely, some asphalt blocks may be over-crushed by a large impact force during the crushing process, forming fine particles, while others may only have their surface impacted, leaving the interior as larger blocks, resulting in significant differences in the particle size of the final product. Utility Model Content

[0004] The purpose of this utility model is to solve the problems existing in the prior art by proposing a waste asphalt crushing and recycling device for municipal highway construction.

[0005] To achieve the above objectives, the present invention adopts the following technical solution: a waste asphalt crushing and recycling device for municipal highway construction, comprising a base plate, a mounting frame, and a recycling bin. A double-action mechanism and a fine crushing mechanism are fixedly installed on the upper side of the mounting frame. A primary crushing mechanism is fixedly installed on the upper side of the fine crushing mechanism. The double-action mechanism is simultaneously connected to the primary crushing mechanism and the fine crushing mechanism. The primary crushing mechanism includes fixed blades, rotating blades, and a primary screen. Two sets of fixed blades are located on both sides of the rotating blades and mesh with each other. The primary screen is located below the fixed blades and the rotating blades. The fine crushing mechanism includes an upper cover, a roller, and a secondary screen. The roller is rotatably connected to the middle of the inner cavity formed by the upper cover and the roller. The aperture of the secondary screen is smaller than that of the primary screen.

[0006] Preferably, the primary crushing mechanism further includes a material receiving bin, a secondary gear, and a primary gear. Two sets of fixed cutters are fixedly installed in the lower part of the inner cavity of the material receiving bin, and the rotating cutter is rotatably connected to the inner cavity of the material receiving bin.

[0007] Preferably, the secondary gear is fixedly installed on the shaft of the rotating cutter, the secondary gear and the primary gear are meshed together, and the primary screen is fixedly connected to the lower part of the inner cavity of the material receiving bin.

[0008] Preferably, the fine grinding mechanism further includes an inlet chamber, which is fixedly connected to the upper side of the upper cover and the lower side of the material receiving chamber.

[0009] Preferably, the dual-action mechanism includes a stepper motor, a belt, a driving pulley, a worm gear box, and a driven pulley. The primary gear is fixedly mounted on the output shaft of the worm gear box, and the input end of the worm gear box is connected to the output shaft of the stepper motor.

[0010] Preferably, the driving pulley is fixedly installed in the middle of the output shaft of the stepper motor, and the driving pulley is connected to the driven pulley via the belt.

[0011] Preferably, the driven pulley is fixedly installed at one end of the shaft of the roller, and the recycling bin is located below the secondary screen.

[0012] Compared with the prior art, the advantages and positive effects of this utility model are as follows:

[0013] 1. In this utility model, the rotating blades and the fixed blades on both sides interlock to crush waste asphalt blocks into small pieces that fall onto the primary screen. Oversized pieces are crushed again by the rotation of the blades and are finally transferred to the housing composed of the upper cover and the secondary screen. The rotating rollers further crush the small pieces of asphalt. Asphalt that meets the particle size requirements passes through the secondary screen and is recycled through the recycling bin. Through multiple crushing steps in the primary crushing mechanism and the fine crushing mechanism, the waste asphalt blocks are crushed into particles that meet the requirements for reuse, ensuring that the particle size is within a suitable range and improving the utilization effect.

[0014] 2. In this utility model, the output shaft of the stepper motor drives the active pulley and the worm gear box to work synchronously. The output shaft of the worm gear box drives the first-stage gear to rotate, thereby meshing with the second-stage gear to rotate. The second-stage gear drives the rotating cutter to rotate in the lower part of the inner cavity of the material receiving bin. The active pulley drives the driven pulley to rotate through the belt. The driven pulley drives the grinding roller to rotate in the inner cavity of the shell composed of the upper cover and the second-stage screen. One set of power sources simultaneously drives the primary crushing mechanism and the fine crushing mechanism, which not only saves the cost of the device, but also improves the synchronization of the crushing work of the two and improves the quality of waste asphalt crushing. Attached Figure Description

[0015] Figure 1 This utility model presents a three-dimensional structural diagram of a waste asphalt crushing and recycling device for municipal highway construction. Figure 1 ;

[0016] Figure 2 This utility model presents a three-dimensional structural diagram of a waste asphalt crushing and recycling device for municipal highway construction. Figure 2 ;

[0017] Figure 3 This utility model presents a first three-dimensional structural schematic diagram showing the internal details of a waste asphalt crushing and recycling device for municipal highway construction.

[0018] Figure 4 This invention presents a second three-dimensional structural diagram showing the internal details of a waste asphalt crushing and recycling device for municipal highway construction.

[0019] Legend: 1. Base plate; 2. Mounting frame; 3. Double-action mechanism; 31. Stepper motor; 32. Belt; 33. Drive pulley; 34. Worm gearbox; 35. Driven pulley; 4. Primary crushing mechanism; 41. Feeding bin; 42. Secondary gear; 43. Primary gear; 44. Fixed cutter; 45. Rotating cutter; 46. Primary screen; 5. Fine crushing mechanism; 51. Inlet bin; 52. Top cover; 53. Roller; 54. Secondary screen; 6. Recovery bin. Detailed Implementation

[0020] To better understand the above-mentioned objectives, features, and advantages of this utility model, the present utility model will be further described below with reference to the accompanying drawings and embodiments. It should be noted that, unless otherwise specified, the embodiments and features described in these embodiments can be combined with each other.

[0021] Many specific details are set forth in the following description in order to provide a full understanding of the present invention. However, the present invention may also be implemented in other ways different from those described herein. Therefore, the present invention is not limited to the specific embodiments disclosed in the following specification.

[0022] Example 1: As Figure 1 - Figure 4As shown, this utility model provides a waste asphalt crushing and recycling device for municipal highway construction, including a base plate 1, a mounting frame 2, and a recycling bin 6. A double-action mechanism 3 and a fine crushing mechanism 5 are fixedly installed on the upper side of the mounting frame 2. A primary crushing mechanism 4 is fixedly installed on the upper side of the fine crushing mechanism 5. The double-action mechanism 3 is simultaneously connected to the primary crushing mechanism 4 and the fine crushing mechanism 5. The primary crushing mechanism 4 includes fixed cutters 44, rotating cutters 45, and a primary screen 46. Two sets of fixed cutters 44 are located on both sides of the rotating cutters 45 and mesh with each other. The primary screen 46 is located below the fixed cutters 44 and the rotating cutters 45. The fine crushing mechanism 5 includes an upper cover 52, a roller 53, and a secondary screen 54. The upper cover 52 and the roller 53 are rotatably connected to the middle of the inner cavity of the shell. The aperture of the secondary screen 54 is smaller than that of the primary screen 46. The primary crushing mechanism 4 also includes a material receiving bin 41, a secondary gear 42 and a primary gear 43. Two sets of fixed cutters 44 are fixedly installed in the lower part of the inner cavity of the material receiving bin 41. The rotating cutter 45 is rotatably connected to the inner cavity of the material receiving bin 41. The secondary gear 42 is fixedly installed on the shaft of the rotating cutter 45. The secondary gear 42 and the primary gear 43 are meshed. The primary screen 46 is fixedly connected to the lower part of the inner cavity of the material receiving bin 41. The fine crushing mechanism 5 also includes an inlet bin 51. The inlet bin 51 is fixedly connected to the upper side of the upper cover 52 and the lower side of the material receiving bin 41.

[0023] The specific settings and functions of this embodiment are described below: Dry waste asphalt blocks are fed into the receiving hopper 41. The rotating blades 45 and the fixed blades 44 on both sides interlock, crushing the waste asphalt blocks into small pieces that fall onto the primary screen 46. Oversized pieces are crushed again by the rotating blades 45. Pieces of the appropriate particle size enter the inlet hopper 51 through the screen holes of the primary screen 46, and are finally transferred to the housing composed of the upper cover 52 and the secondary screen 54. The rotating roller 53 further crushes the small asphalt pieces. Asphalt of the appropriate particle size passes through the secondary screen 54 and is recycled through the recovery hopper 6. After multiple crushing steps in the primary crushing mechanism 4 and the fine crushing mechanism 5, the waste asphalt blocks are crushed into particles that meet the requirements for reuse, ensuring that the particle size is within a suitable range and improving the utilization effect.

[0024] Example 2: Figure 1 - Figure 4 As shown, the double-action mechanism 3 includes a stepper motor 31, a belt 32, a drive pulley 33, a worm gear box 34, and a driven pulley 35. The primary gear 43 is fixedly installed on the output shaft of the worm gear box 34. The input end of the worm gear box 34 is connected to the output shaft of the stepper motor 31. The drive pulley 33 is fixedly installed in the middle of the output shaft of the stepper motor 31. The drive pulley 33 is connected to the driven pulley 35 through the belt 32. The driven pulley 35 is fixedly installed on one end of the shaft of the roller 53. The recovery bin 6 is located below the secondary screen 54.

[0025] The overall effect of this embodiment is that by starting the stepper motor 31, the output shaft of the stepper motor 31 drives the drive pulley 33 and the worm gear box 34 to work synchronously. The output shaft of the worm gear box 34 drives the first-stage gear 43 to rotate, thereby meshing with the second-stage gear 42 to rotate. The second-stage gear 42 drives the rotating cutter 45 to rotate in the lower part of the inner cavity of the material receiving bin 41. The drive pulley 33 drives the driven pulley 35 to rotate through the belt 32. The driven pulley 35 drives the grinding roller 53 to rotate in the inner cavity of the housing composed of the upper cover 52 and the second-stage screen 54. A set of power sources simultaneously drives the primary crushing mechanism 4 and the fine crushing mechanism 5 to operate, which not only saves the cost of the device, but also improves the synchronization of the crushing work of the two and improves the quality of waste asphalt crushing.

[0026] The operating method and working principle of this device are as follows: The output shaft of the stepper motor 31 drives the drive pulley 33 and the worm gear box 34 to work synchronously. The output shaft of the worm gear box 34 drives the first-stage gear 43 to rotate, thereby meshing with the second-stage gear 42. The second-stage gear 42 drives the rotating cutter 45 to rotate in the lower part of the inner cavity of the material receiving bin 41. The drive pulley 33 drives the driven pulley 35 to rotate through the belt 32. The driven pulley 35 drives the grinding roller 53 to rotate in the inner cavity of the housing composed of the upper cover 52 and the second-stage screen 54. A set of power sources simultaneously drives the primary crushing mechanism 4 and the fine crushing mechanism 5 to operate. The dried waste asphalt blocks are fed into the receiving bin 41. The rotating blades 45 and the fixed blades 44 on both sides interlock and crush the waste asphalt blocks into small pieces that fall onto the primary screen 46. The excessively large pieces are crushed again by the tumbling of the rotating blades 45. The small pieces that meet the particle size requirements enter the inlet bin 51 through the screen holes of the primary screen 46 and are finally transferred to the shell composed of the upper cover 52 and the secondary screen 54. The rotating roller 53 further crushes the small pieces of asphalt. The asphalt that meets the particle size requirements passes through the secondary screen 54 and is recycled through the recovery bin 6.

[0027] The above description is merely a preferred embodiment of the present utility model and is not intended to limit the present utility model in any other way. Any person skilled in the art may make changes or modifications to the above-disclosed technical content to create equivalent embodiments for application in other fields. However, any simple modifications, equivalent changes, and modifications made to the above embodiments based on the technical essence of the present utility model without departing from the technical solution of the present utility model shall still fall within the protection scope of the technical solution of the present utility model.

Claims

1. A waste asphalt crushing and recycling device for municipal highway construction, comprising a base plate (1), a mounting frame (2), and a recycling bin (6), characterized in that: The mounting bracket (2) is fixedly mounted with a double-acting mechanism (3) and a fine grinding mechanism (5). The fine grinding mechanism (5) is fixedly mounted with a primary grinding mechanism (4). The double-acting mechanism (3) is simultaneously connected to the primary grinding mechanism (4) and the fine grinding mechanism (5). The primary grinding mechanism (4) includes a fixed cutter (44), a rotating cutter (45), and a primary screen (46). The two sets of fixed cutters (44) are located on both sides of the rotating cutter (45) and mesh with the rotating cutter (45). The primary screen (46) is located below the fixed cutter (44) and the rotating cutter (45). The fine grinding mechanism (5) includes a top cover (52), a roller (53), and a secondary screen (54). The roller (53) is rotatably connected to the middle of the inner cavity of the shell formed by the top cover (52) and the roller (53). The aperture of the secondary screen (54) is smaller than that of the primary screen (46).

2. The waste asphalt crushing and recycling device for municipal highway construction according to claim 1, characterized in that: The primary crushing mechanism (4) also includes a material receiving bin (41), a secondary gear (42) and a primary gear (43). Two sets of fixed cutters (44) are fixedly installed in the lower part of the inner cavity of the material receiving bin (41), and the rotating cutter (45) is rotatably connected to the inner cavity of the material receiving bin (41).

3. The waste asphalt crushing and recycling device for municipal highway construction according to claim 2, characterized in that: The secondary gear (42) is fixedly installed on the shaft of the rotating cutter (45), the secondary gear (42) and the primary gear (43) are meshed and connected, and the primary screen (46) is fixedly connected to the lower part of the inner cavity of the material receiving bin (41).

4. The waste asphalt crushing and recycling device for municipal highway construction according to claim 3, characterized in that: The fine grinding mechanism (5) also includes an inlet chamber (51), which is fixedly connected to the upper side of the upper cover (52) and the lower side of the material receiving chamber (41).

5. The waste asphalt crushing and recycling device for municipal highway construction according to claim 4, characterized in that: The double-action mechanism (3) includes a stepper motor (31), a belt (32), a drive pulley (33), a worm gear box (34), and a driven pulley (35). The first-stage gear (43) is fixedly installed on the output shaft of the worm gear box (34), and the input end of the worm gear box (34) is connected to the output shaft of the stepper motor (31) for transmission.

6. The waste asphalt crushing and recycling device for municipal highway construction according to claim 5, characterized in that: The driving pulley (33) is fixedly installed in the middle of the output shaft of the stepper motor (31), and the driving pulley (33) is connected to the driven pulley (35) through the belt (32).

7. A waste asphalt crushing and recycling device for municipal highway construction according to claim 6, characterized in that: The driven pulley (35) is fixedly installed at one end of the shaft of the roller (53), and the recycling bin (6) is located below the secondary screen (54).

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