Construction waste classification and recovery treatment device suitable for construction site

Abstract

The invention discloses a construction waste classification and recovery treatment device suitable for a construction site, which belongs to the technical field of construction machinery and comprises a bracket, a self-driving mechanism, a pre-splitting mechanism and a crushing mechanism, the shell is installed on the support, a feeding port is formed in the top of the shell, a discharging port is formed in the bottom of the shell, the self-driving mechanism, the pre-splitting mechanism and the crushing mechanism are installed in the shell, and the self-driving mechanism, the pre-splitting mechanism and the crushing mechanism are mutually connected through a first chain. The reinforced concrete slab pre-splitting and recycling device has double guarantees of self-driving and auxiliary power, the application scene is expanded, and the purpose of classifying and recycling reinforced concrete slabs is achieved through the pre-splitting and crushing process.

Description

TECHNICAL FIELD

[0001] The application belongs to the technical field of construction machinery, and particularly relates to a construction waste classification and recycling device suitable for a construction site. BACKGROUND

[0002] With the advancement of urbanization process in China and the surge in the demand for stock building renovation, the amount of reinforced concrete waste generated by building demolition projects is increasing year by year. Among them, reinforced concrete slabs, as the core component of building structures, account for a large proportion of the total amount of construction waste. Effective separation and recycling of steel and concrete from such waste not only reduces the occupation of land resources and environmental pollution, but also realizes the recycling of steel and concrete aggregates, which is in line with the industry trend of green building and sustainable development, and has important economic and social benefits.

[0003] At present, the crushing and recycling technology for reinforced concrete slabs on construction sites mainly relies on traditional crushing equipment and some improved devices, but there are many technical defects in actual application, which is difficult to meet the recycling needs of complex environments on the site. For example, the existing equipment such as jaw crushers and impact crushers all achieve concrete crushing through high-strength impact and extrusion. Due to the brittleness of concrete and the high tensile strength of steel, during the impact process, the concrete is crushed while the steel is easily subjected to irregular bending and extrusion stress, resulting in plastic deformation, bending or even breaking of the steel. Such damaged steel cannot be directly reused and needs to be re-melted and processed, which not only increases the recycling cost but also reduces the resource recycling efficiency. In addition, the existing equipment is large in size and relies on electric control system for coordinated operation. In small-scale construction sites and remote areas, there is no power supply, and the equipment is not convenient to move, which limits the use of the equipment. SUMMARY

[0004] The purpose of the present application is to provide a construction waste classification and recycling device suitable for a construction site, which has dual protection of self-driving and auxiliary power, expands the applicable scenarios, and achieves the purpose of classification and recycling of reinforced concrete slabs through the processes of pre-cracking and crushing.

[0005] To achieve the above technical purposes, the technical solutions adopted by the present application are as follows:

[0006] The construction waste classification and recycling device suitable for a construction site comprises a support, a self-driving mechanism, a pre-cracking mechanism and a crushing mechanism.

[0007] A housing is installed on the support, the top of the housing is provided with a feeding port, the bottom of the housing is provided with a discharging port, the self-driving mechanism, the pre-cracking mechanism and the crushing mechanism are respectively installed in the housing, and the self-driving mechanism, the pre-cracking mechanism and the crushing mechanism are connected with each other through a first chain.

[0008] Preferably, the self-driven mechanism further comprises a first rotating shaft rotatably connected to the side wall of the shell, a blade rotatably connected to the first rotating shaft, a torsional spring mounted between the first rotating shaft and the blade, a first sprocket connected to the first rotating shaft, a first chain connected to the first sprocket, and a baffle connected to the inner wall of the shell.

[0009] Preferably, the pre-cracking mechanism further comprises a second rotating shaft rotatably connected to the shell, a second sprocket and a driving bevel gear connected to the second rotating shaft, a first chain connected to the second sprocket, two cams rotatably connected to the shell, two slide grooves symmetrically arranged on each cam, a third sprocket connected to the top of each cam, a second chain connected between the two third sprockets, a driven bevel gear coaxially connected to the top of one of the cams, the driven bevel gear meshing with the driving bevel gear, four slide rails mounted in the shell, two mounting plates slidably connected between the four slide rails, a top rod connected to each end of each mounting plate, the top rod slidably connected to the slide groove, and an impact assembly mounted on the opposite side walls of the two mounting plates.

[0010] Preferably, the impact assembly further comprises a hollow cylinder, an impact head slidably connected to the cylinder, a fourth spring connected between the impact head and the cylinder, a cylindrical slide groove connected to the top of the impact head, a cylindrical hammer slidably connected to the cylindrical slide groove, a first spring connected between the top of the cylindrical hammer and the cylinder, four first clamping blocks slidably connected to the middle of the cylindrical hammer in the circumferential direction, a second spring connected between the four first clamping blocks and the cylindrical hammer, a clamping groove formed in the middle of the cylindrical slide groove in the circumferential direction and matched with the four first clamping blocks, four slide channels formed on the inner wall of the cylinder in the circumferential direction, and a second clamping block slidably connected to each slide channel and connected to the slide channel through a third spring.

[0011] Preferably, the bottom of each cam is connected to a fourth sprocket, and the two fourth sprockets are connected by a third chain. This facilitates the synchronous rotation of the two cams. The impact head is provided with a reinforcing rib. This can improve the strength of the impact head and prolong its service life.

[0012] Preferably, the crushing mechanism further comprises a mounting frame, a third rotating shaft and a fourth rotating shaft are rotatably connected to the mounting frame, a driving gear, a fifth sprocket and a right rolling gear are connected to the third rotating shaft, the fifth sprocket is connected with the first chain, the right rolling gear is provided with convex arc teeth, a driven gear and a left rolling gear are connected to the fourth rotating shaft, the driven gear is engaged with the driving gear, and the left rolling gear is provided with concave arc teeth matched with the convex arc teeth on the right rolling gear. The matching of the convex arc teeth and the concave arc teeth can avoid direct contact of the teeth with the steel bars, and the shear force is transmitted along the interlayers of the reinforced concrete slab, thereby reducing the damage to the steel bars.

[0013] Preferably, an engine is further mounted on the support, a driving pulley is connected to an output shaft of the engine, a driven pulley is connected to the first rotating shaft outside the housing, a ratchet mechanism is mounted between the driven pulley and the first rotating shaft, the driving pulley is connected with the driven pulley through a belt, and a protective shell is mounted outside the driving pulley, the belt and the driven pulley. When the impact force of the reinforced concrete slab entering the feeding port on the blade cannot drive the first rotating shaft to rotate, the engine can be started to provide additional power for the self-driving mechanism, so as to ensure the normal work of the device.

[0014] Preferably, a moving frame is further provided, wheels are mounted on the moving frame, and the support is mounted on the moving frame. In this way, the device can be conveniently moved, and the device can be moved to a working site by using a trailer through the moving frame and the wheels.

[0015] The working principle of the device is as follows: before work, the device is moved to a working site by using a trailer through the moving frame.

[0016] Step one, self-driving. The reinforced concrete slabs of different sizes formed after the building is demolished are poured into the feeding port by the excavator, the reinforced concrete slabs slide into the feeding port and impact the blades, the first rotating shaft is driven to rotate by the blades, the flywheel is driven to rotate by the first rotating shaft, and the pre-cracking mechanism and the crushing mechanism are driven to work cooperatively by the first sprocket, the first chain, the second sprocket and the fifth sprocket.

[0017] Step two, pre-cracking. The first chain drives the second sprocket to rotate, and the second sprocket in turn transmits power to the second shaft, driving bevel gear, driven bevel gear, thereby driving the two cams and the third sprocket to rotate. When the two cams rotate, the two installation plates are brought together along the slide rail by the chute and the top rod, and the upper and lower impact assemblies approach each other. The upper and lower impact heads abut against the reinforced concrete slab. As the upper and lower impact assemblies continue to approach, the impact heads, cylindrical chute and cylindrical hammer stop moving. The cylinder drives the second clamp block to continue moving, and the first and fourth springs are gradually compressed. When the second clamp block moves to the clamp slot position, the second clamp block is inserted into the clamp slot under the action of the third spring, and the first clamp block is pushed out of the clamp slot. The second spring is compressed, and the first clamp block is disengaged from the clamp slot. The compressed first spring is elongated, generating a large thrust force on the cylindrical hammer. The cylindrical hammer accelerates and hits the impact head, generating a large concentrated stress on the reinforced concrete slab, causing cracks on the upper and lower surfaces of the reinforced concrete slab. This stage only damages the integrity of the reinforced concrete slab, and the steel bars are not damaged due to their high tensile strength.

[0018] As the two cams continue to rotate, the two installation plates move away along the slide rail, the cylinder moves away from the reinforced concrete slab, and the second clamp block disengages from the clamp slot. As the cylinder continues to move, the first spring pulls the cylindrical hammer up, bringing the first clamp block back into the clamp slot, and the pre-cracking mechanism resets.

[0019] Step three, crushing. The first chain drives the third shaft to rotate through the fifth sprocket, and the third shaft drives the fourth shaft to rotate through the driving gear and the driven gear, thereby achieving reverse rotation of the right and left rolling tooth discs. The pre-cracked reinforced concrete slab enters between the right and left rolling tooth discs, and the right and left rolling tooth discs use relative shear force to make the reinforced concrete slab crack and break along the pre-crack layer. The cooperation of the convex arc teeth and the concave arc teeth can avoid direct contact of the tooth tips with the steel bars, and the shear force is transmitted along the interlayer of the reinforced concrete slab, reducing damage to the steel bars. The crushed reinforced concrete slab is divided into concrete and steel bars, which are discharged from the discharge port, achieving classification and recycling of the reinforced concrete slab.

[0020] The advantages of the present application mainly include:

[0021] 1. The device has dual protection of self-driving and auxiliary power, and is suitable for complex working conditions without external power supply. The core of the device uses a self-driving mechanism, which uses the impact force of the falling reinforced concrete slab to drive the blade to rotate, and then drives the pre-cracking mechanism and the crushing mechanism to work cooperatively through chain transmission, without relying on external electric control system and power supply. At the same time, an engine is added as auxiliary power, which can be started to supplement power through belt transmission when the feeding is intermittent or the impact force of the material is insufficient, ensuring the stable operation of the device in small-scale construction sites, remote areas and other scenes without power supply, breaking through the use limitations of existing large equipment.

[0022] 2, the impact assembly can exert concentrated stress on the upper and lower surfaces of the reinforced concrete slab, only damage the integrity of the concrete to form cracks, and the steel bars are not damaged due to the high tensile strength; The convex arc teeth of the right rolling tooth disc cooperate with the concave arc teeth of the left rolling tooth disc, and the concrete is cracked and broken along the pre-crack layer through the relative shear force, avoiding direct contact of the tooth tip with the steel bar, and the shear force is transmitted along the interlayer of the slab body, further reducing the damage to the steel bar. The steel bars treated by the device can be directly reused without re-melting, reducing the recycling cost and improving the recycling efficiency and utilization value of steel resources.

[0023] 3, realize efficient classification and recycling of steel bars and concrete, the broken concrete aggregate and steel bars can be directly separated and discharged from the discharge port, without additional sorting process, simplify the recycling process and improve the recycling efficiency on site. BRIEF DESCRIPTION OF DRAWINGS

[0024] The application can be further illustrated by the non-limiting examples shown in the accompanying drawings;

[0025] Figure 1 is a schematic view of the three-dimensional structure of the embodiment of the application Figure One ;

[0026] Figure 2 is a schematic view of the three-dimensional structure of the embodiment of the application Figure Two ;

[0027] Figure 3 is a schematic view of the three-dimensional structure of the shell inside the embodiment of the application;

[0028] Figure 4 is a schematic view of the front structure of the shell inside the embodiment of the application;

[0029] Figure 5 is a schematic view of the three-dimensional structure of the self-driving mechanism in the embodiment of the application;

[0030] Figure 6 is a schematic view of the working of the self-driving mechanism in the embodiment of the application;

[0031] Figure 7 is a schematic view of the three-dimensional structure of the pre-cracking mechanism in the embodiment of the application;

[0032] Figure 8 is a schematic view of the three-dimensional structure of the impact assembly in the embodiment of the application;

[0033] Figure 9 is a schematic view of the sectional structure of the impact assembly in the embodiment of the application;

[0034] Figure 10 is Figure 9 an enlarged view of A in the embodiment of the application;

[0035] Figure 11 For Figure 10 Enlarged view at B;

[0036] Figure 12 For the three-dimensional structure of the crushing mechanism in the embodiment of the application;

[0037] Figure 13 For the cooperation of the right and left rolling tooth discs in the crushing mechanism in the embodiment of the application;

[0038] The main element symbols are explained as follows:

[0039] Support 1, housing 11, feed port 12, discharge port 13, engine 14, protective shell 15, moving frame 16, wheel 17, self-driving mechanism 2, first rotating shaft 21, blade 22, torsional spring 23, first sprocket 24, baffle 25, flywheel 26, pre-cracking mechanism 3, second rotating shaft 31, second sprocket 32, driving bevel gear 33, cam 34, chute 35, third sprocket 36, second chain 37, driven bevel gear 38, slide rail 39, mounting plate 310, jacking rod 311, impact assembly 312, cylinder body 3121, impact head 3122, cylindrical chute 3123, cylindrical hammer body 3124, first spring 3125, first clamping block 3126, second spring 3127, clamping groove 3128, slide 3129, second clamping block 31210, third spring 31211, reinforcing rib 31212, fourth spring 31213, fourth sprocket 313, third chain 314, crushing mechanism 4, mounting frame 41, third rotating shaft 42, fourth rotating shaft 43, driving gear 44, fifth sprocket 45, right rolling tooth disc 46, driven gear 47, left rolling tooth disc 48, first chain 5, reinforced concrete slab 6. DETAILED DESCRIPTION

[0040] In order for those skilled in the art to better understand the present application, the technical solutions of the present application are further described below in conjunction with the drawings and examples.

[0041] In some construction sites, reinforced concrete slabs, as a core component of building structures, account for a large proportion of the total amount of construction waste. Figures 1 to 13As shown, the present application is mainly used for the classification and recycling of reinforced concrete slabs in construction sites. The construction waste classification and recycling device suitable for construction sites of the present application comprises a support 1, a self-driving mechanism 2, a pre-cracking mechanism 3 and a crushing mechanism 4. The support 1 plays a role of supporting and installing the whole device. The self-driving mechanism 2 can convert the gravity of the falling reinforced concrete slab into the power of the device, so as to achieve the purpose of saving energy. The pre-cracking mechanism 3 can cause cracks on the upper and lower surfaces of the reinforced concrete slab. This stage only destroys the integrity of the reinforced concrete slab 6, and the steel bars are not damaged due to their strong tensile strength. The crushing mechanism 4 can cause the reinforced concrete slab 6 to be cracked and crushed along the pre-cracking crack layer, reducing the damage to the steel bars.

[0042] Among them, the support 1 is installed with a shell 11, the self-driving mechanism 2, the pre-cracking mechanism 3 and the crushing mechanism 4 are respectively installed in the shell 11, the self-driving mechanism 2, the pre-cracking mechanism 3 and the crushing mechanism 4 are connected with each other through the first chain 5, the top of the shell is provided with a feeding port 12, and the bottom of the shell 11 is provided with a discharging port 13.

[0043] In order to facilitate the movement of the device, the device further comprises a moving frame 16, the moving frame 16 is installed with wheels 17, and the support 1 is installed on the moving frame 16. Before work, the device can be moved to the site where work is needed through the moving frame 16 and the wheels 17 by using a trailer.

[0044] In order to be able to convert the gravity of the falling reinforced concrete slab 6 into the power of the device, the self-driving mechanism 2 further comprises a first rotating shaft 21, the first rotating shaft 21 is rotatably connected to the side wall of the shell 11, the first rotating shaft 21 is rotatably connected with a blade 22 and a flywheel 26 (the rotation angle of the blade 22 is limited, and it can only rotate counterclockwise from the initial position. This structure is prior art, and will not be described here. In the process of rotating the first rotating shaft 21, when the blade 22 collides with the baffle 25, the blade 22 rotates away from the reinforced concrete slab 6, so that the blade 22 can prevent the reinforced concrete slab 6 from being clamped on the inner wall of the feeding port 12, the baffle 25 can block the blade 22 and make it rotate, and it can also prevent the reinforced concrete slab 6 from entering from above the first rotating shaft 21, so as to ensure the clockwise rotation of the first rotating shaft 21, as shown in the figure. Figure 6 The flywheel 26 is located outside the shell 11, and the flywheel 26 can maintain the continuous rotation of the first rotating shaft 21 when the feeding is intermittent. A torsional spring 23 is installed between the first rotating shaft 21 and the blade 22, a first sprocket 24 is connected to the first rotating shaft 21, the first sprocket 24 is connected with the first chain 5, and a baffle 25 is connected to the inner wall of the shell 11.

[0045] When the self-driven mechanism 2 works, the reinforced concrete plates 6 of different sizes formed after the building is demolished by the excavator are poured into the feeding port 12, the reinforced concrete plates 6 slide along the feeding port 12 and impact the blades 22, and the first rotating shaft 21 is driven to rotate by the blades 22, the flywheel 26 is driven to rotate by the first rotating shaft 21, and the pre-cracking mechanism 3 and the crushing mechanism 4 are driven to work cooperatively by the first sprocket 24, the first chain 5, the second sprocket 32 and the fifth sprocket 45, and the flywheel 26 can maintain the first rotating shaft 21 to rotate continuously when the feeding is intermittent.

[0046] In order to enable the upper and lower surfaces of the reinforced concrete plates 6 to produce cracks, the pre-cracking mechanism 3 further comprises a second rotating shaft 31 rotatably connected in the housing 11, the second rotating shaft 31 is connected with a second sprocket 32 and a driving bevel gear 33, the second sprocket 32 is connected with the first chain 5, and two cams 34 are further rotatably connected in the housing 11, two slide grooves 35 symmetrically arranged on the upper and lower surfaces of each cam 34 are formed, the top of each cam 34 is connected with a third sprocket 36, the second chain 37 is connected between the two third sprockets 36, the bottom of each cam 34 is connected with a fourth sprocket 313, and the third chain 314 is connected between the two fourth sprockets 313. The top of one of the cams 34 is coaxially connected with a driven bevel gear 38, the driven bevel gear 38 is engaged with the driving bevel gear 33, four slide rails 39 are installed in the housing 11, two mounting plates 310 are slidably connected between the four slide rails 39, the two ends of each mounting plate 310 are connected with a top rod 311, the top rod 311 is slidably connected in the slide groove 35, and the impact assembly 312 is installed on the opposite two side walls of the two mounting plates 310.

[0047] When the pre-cracking mechanism 3 works, the first chain 5 drives the second sprocket 32 to rotate, and the second sprocket 32 further transmits power to the second rotating shaft 31, the driving bevel gear 33 and the driven bevel gear 38 in sequence, so as to drive the two cams 34 and the third sprocket 36 to rotate. When the two cams 34 rotate, the two mounting plates 310 are driven to move towards each other along the slide rails 39 through the slide grooves 35 and the top rods 311, and the impact assemblies 312 above and below are close to each other.

[0048] The impact assembly 312 further comprises a hollow cylinder 3121, an impact head 3122 is slidably connected in the cylinder 3121, the impact head 3122 is provided with a reinforcing rib 31212, a fourth spring 31213 is connected between the impact head 3122 and the cylinder 3121, a cylindrical chute 3123 is connected to the top of the impact head 3122, a cylindrical hammer 3124 is slidably connected in the cylindrical chute 3123, a first spring 3125 (the stiffness coefficient of the first spring 3125 is larger) is connected between the top of the cylindrical hammer 3124 and the cylinder 3121, four first clamping blocks 3126 are slidably connected to the middle of the cylindrical hammer 3124 in the circumferential direction, a second spring 3127 is connected between the four first clamping blocks 3126 and the cylindrical hammer 3124, a clamping groove 3128 matched with the four first clamping blocks 3126 is formed in the middle of the cylindrical chute 3123 in the circumferential direction, four slideways 3129 are formed on the inner wall of the cylinder 3121 in the circumferential direction, a second clamping block 31210 is slidably connected in the four slideways 3129 (the second clamping block 31210 and the edge of the clamping groove 3128 are both provided with a chamfer, so that the second clamping block 31210 can be easily inserted into or separated from the clamping groove 3128.), and a third spring 31211 (the stiffness coefficient of the third spring 31211 is greater than that of the second spring 3127) is connected between the second clamping block 31210 and the slideway 3129.

[0049] When the impact assembly 312 works, the upper and lower impact heads 3122 abut against the reinforced concrete slab 6, and as the upper and lower impact assemblies 312 continue to approach, the impact head 3122, the cylindrical chute 3123 and the cylindrical hammer 3124 stop moving, the cylinder 3121 drives the second clamping block 31210 to continue moving (at the beginning, the second clamping block 31210 abuts against the outer wall of the cylindrical chute 3123, and the third spring 31211 is in a compressed state.), and the first spring 3125 and the fourth spring 31213 are gradually compressed. When the second clamping block 31210 moves to the position of the clamping groove 3128, the second clamping block 31210 is inserted into the clamping groove 3128 under the action of the third spring 31211, and the first clamping block 3126 is pushed away from the clamping groove 3128, the second spring 3127 is compressed, and the first clamping block 3126 is separated from the clamping groove 3128 instantaneously, the compressed first spring 3125 is elongated, a great thrust is generated on the cylindrical hammer 3124, the cylindrical hammer 3124 instantaneously accelerates to impact the impact head 3122, the impact head 3122 generates a great concentrated stress on the reinforced concrete slab 6, and cracks are generated on the upper and lower surfaces of the reinforced concrete slab 6. In this stage, only the integrity of the reinforced concrete slab 6 is damaged, and the steel bars are not damaged due to the strong tensile resistance.

[0050] As the two cams 34 continue to rotate, the two mounting plates 310 move away from each other along the slide rail 39, the cylinder 3121 moves away from the reinforced concrete slab 6, the second locking block 31210 disengages from the slot 3128, and as the cylinder 3121 continues to move, the first spring 3125 pulls the cylindrical hammer 3124 upward, causing the first locking block 3126 to re-insert into the slot 3128, and the pre-splitting mechanism 3 resets.

[0051] To enable the reinforced concrete slab 6 to fracture along the pre-cracked layer and reduce damage to the reinforcing steel, the crushing mechanism 4 includes a mounting frame 41. A third rotating shaft 42 and a fourth rotating shaft 43 are rotatably connected to the mounting frame 41. A drive gear 44, a fifth sprocket 45, and a right rolling toothed disc 46 are connected to the third rotating shaft 42. The fifth sprocket 45 is connected to the first chain 5. The right rolling toothed disc 46 is provided with convex arc-shaped teeth. A driven gear 47 and a left rolling toothed disc 48 are connected to the fourth rotating shaft 43. The driven gear 47 meshes with the drive gear 44. The left rolling toothed disc 48 is provided with concave arc-shaped teeth that cooperate with the convex arc-shaped teeth on the right rolling toothed disc 46.

[0052] When the crushing mechanism 4 is working, the first chain 5 drives the third rotating shaft 42 to rotate via the fifth sprocket 45. The third rotating shaft 42 then drives the fourth rotating shaft 43 to rotate via the driving gear 44 and the driven gear 47, thereby realizing the reverse rotation of the right rolling toothed disc 46 and the left rolling toothed disc 48. The pre-cracked reinforced concrete slab 6 enters between the right rolling toothed disc 46 and the left rolling toothed disc 48. The right rolling toothed disc 46 and the left rolling toothed disc 48 use relative shear force to cause the reinforced concrete slab 6 to be broken along the pre-crack layer. The cooperation of the convex arc-shaped teeth and the concave arc-shaped teeth can avoid the tooth tips directly contacting the reinforcing steel, and at the same time, the shear force is transmitted along the interlayer of the reinforced concrete slab 6, reducing damage to the reinforcing steel. The crushed reinforced concrete slab 6 is discharged from the discharge port 13 as concrete and reinforcing steel. The reinforcing steel can be collected and recycled, and the concrete can be recycled or left on the construction site, thereby realizing the classified recycling of the reinforced concrete slab 6.

[0053] An engine 14 is also mounted on the bracket 1. A drive pulley is connected to the output shaft of the engine 14. A driven pulley is connected to the first rotating shaft 21 outside the housing 11. A ratchet mechanism is installed between the driven pulley and the first rotating shaft 21 (the drive pulley, belt, driven pulley, and ratchet mechanism are all existing conventional technologies and are therefore not shown in the figure. This ratchet mechanism ensures that when the first rotating shaft 21 rotates, it does not drive the driven pulley to rotate; however, the engine 14 can drive the first rotating shaft 21 to rotate through the drive pulley, belt, and driven pulley. This ratchet mechanism and its installation method are existing technologies and will not be described in detail here). The drive pulley is connected to the driven pulley via a belt. A protective shell 15 is installed outside the drive pulley, belt, and driven pulley. When the impact force of the reinforced concrete slab 6 entering the feed inlet 12 on the blades 22 is insufficient to drive the first rotating shaft to rotate, the engine 14 can be started to provide additional power to the self-driving mechanism. The engine 14 drives the first rotating shaft 21 to rotate through the drive pulley, belt, and driven pulley, thereby ensuring the normal operation of the device.

[0054] The foregoing has provided a detailed description of the construction waste sorting and recycling device suitable for construction sites provided by the present invention. The specific embodiments described are merely for the purpose of helping to understand the method and core ideas of the present invention. It should be noted that those skilled in the art can make various improvements and modifications to the present invention without departing from its principles, and these improvements and modifications also fall within the protection scope of the claims of the present invention.

Claims

1. A construction waste sorting and recycling device suitable for a construction site, characterized in that: The support (1), the self-driving mechanism (2), the pre-splitting mechanism (3) and the crushing mechanism (4) are arranged in the shell (11). The shell (11) is provided with a feeding port (12) on the top and a discharging port (13) on the bottom.

2. The construction waste classification and recycling device suitable for a construction site according to claim 1, characterized in that: The first rotating shaft (21) is rotatably connected to the side wall of the shell (11), and the blade (22) is rotatably connected to the first rotating shaft (21).

3. The construction waste classification and recycling device suitable for a construction site according to claim 2, characterized in that: The flywheel (26) is connected to the first rotating shaft (21) and located outside the shell (11).

4. The construction waste classification and recycling device suitable for a construction site according to claim 1, characterized in that: The second rotating shaft (31) is rotatably connected to the shell (11), and the second sprocket (32) and the driving bevel gear (33) are connected to the second rotating shaft (31). The top of one of the two cams (34) is coaxially connected to the driven bevel gear (38) which is engaged with the driving bevel gear (33). The four slide rails (39) are arranged in the shell (11), and the two mounting plates (310) are slidably connected between the four slide rails (39).

5. The construction waste classification and recycling device suitable for a construction site according to claim 4, characterized in that: The impact assembly (312) further comprises a hollow cylinder (3121), an impact head (3122) is slidably connected in the cylinder (3121), a fourth spring (31213) is connected between the impact head (3122) and the cylinder (3121), a cylindrical chute (3123) is connected to the top of the impact head (3122), a cylindrical hammer (3124) is slidably connected in the cylindrical chute (3123), a first spring (3125) is connected between the top of the cylindrical hammer (3124) and the cylinder (3121), four first clamping blocks (3126) are slidably connected to the middle of the cylindrical hammer (3124) in the circumferential direction, a second spring (3127) is connected between the four first clamping blocks (3126) and the cylindrical hammer (3124), a clamping groove (3128) matched with the four first clamping blocks (3126) is formed in the middle of the cylindrical chute (3123) in the circumferential direction, four slideways (3129) are formed on the inner wall of the cylinder (3121) in the circumferential direction, and a second clamping block (31210) is slidably connected in the four slideways (3129), wherein a third spring (31211) is connected between the second clamping block (31210) and the slideway (3129).

6. The construction waste classification and recycling device suitable for a construction site according to claim 5, characterized in that: The bottoms of the two cams (34) are respectively connected with fourth sprockets (313), and the third chain (314) is connected between the two fourth sprockets (313).

7. The construction waste classification and recycling device suitable for a construction site according to claim 4, characterized in that: The impact head (3122) is provided with a reinforcing rib (31212).

8. The construction waste classification and recycling device suitable for a construction site according to claim 1, characterized in that: The crushing mechanism (4) further comprises a mounting frame (41), a third rotating shaft (42) and a fourth rotating shaft (43) are rotatably connected to the mounting frame (41), a driving gear (44), a fifth sprocket (45) and a right rolling gear (46) are connected to the third rotating shaft (42), the fifth sprocket (45) is connected with the first chain (5), the right rolling gear (46) is provided with convex arc-shaped teeth, a driven gear (47) and a left rolling gear (48) are connected to the fourth rotating shaft (43), the driven gear (47) is engaged with the driving gear (44), and the left rolling gear (48) is provided with concave arc-shaped teeth matched with the convex arc-shaped teeth on the right rolling gear (46).

9. The construction waste classification and recycling device suitable for a construction site according to claim 1, characterized in that: An engine (14) is further mounted on the support (1), a driving pulley is connected to the output shaft of the engine (14), a driven pulley is connected to the first rotating shaft (21) outside the shell (11), a ratchet mechanism is mounted between the driven pulley and the first rotating shaft (21), the driving pulley is connected with the driven pulley through a belt, and a protective shell (15) is mounted outside the driving pulley, the belt and the driven pulley.

10. The construction waste sorting and recycling device for construction sites according to any one of claims 1-9, characterized in that: A moving frame (16) is further included, wheels (17) are mounted on the moving frame (16), and the support (1) is mounted on the moving frame (16).

Images