A recycling device for construction waste

Abstract

The application discloses a kind of recycling of construction waste recycling processing device, belong to construction waste cleaning technical field, the device includes installation support, jaw crusher, feed inlet, straightening box, crusher, support table, comb mechanism and carding mechanism, by jaw crusher first to construction waste pre-pulverization processing, can preliminary realize the dispersion separation of concrete and reinforcing steel, carding mechanism is meshed with the engagement transmission of jaw crusher gear by linkage gear, to realize synchronous operation, utilize evenly distributed combing tooth to continuously push material and carding reinforcing steel, can neat steel bar arrangement, let reinforcing steel can smoothly and orderly enter the clearance of comb mechanism, while assisting broken small concrete, comb mechanism forms neat straightening channel by multiple rotatable rotating shafts, can accurately straighten and correct left and right curved reinforcing steel, while the rotating structure of rotating shaft can greatly reduce the frictional resistance in reinforcing steel conveying process.

Description

Technical Field

[0001] This invention belongs to the field of construction waste cleaning technology, specifically, it relates to a device for the recycling and reuse of construction waste. Background Technology

[0002] Construction waste management is a comprehensive task involving multiple fields such as environmental protection, urban management, and resource recycling. It includes the collection, transportation, sorting, treatment, and disposal of waste and waste materials generated during construction activities. Environmentally friendly construction and decoration waste crushing equipment is a part of the construction waste management field. It aims to use technical means to process waste materials generated during the construction and decoration process, reduce their negative impact on the environment, and promote the effective use and recycling of resources.

[0003] The invention patent with announcement number CN118455232A discloses an environmentally friendly construction and decoration waste crushing device, including a crushing hopper. Two crushing rollers are rotatably installed inside the crushing hopper. A motor is fixedly installed at the rear of the crushing hopper. The output shaft of the motor is fixedly connected to one end of one of the crushing rollers. The other ends of the two crushing rollers pass through the front of the crushing hopper and are fixedly connected to gears. The two gears mesh with each other. A sorting structure is set at the bottom of the crushing hopper. The sorting structure includes a wet waste crushing area and a dry waste crushing area. A sorting hopper is fixedly installed at the bottom of the crushing hopper. The dry waste crushing area is opened inside the sorting hopper on one side and passes through the top and bottom of the sorting hopper. By setting up a sorting structure, environmentally friendly construction waste that cannot be effectively crushed can be quickly sorted and crushed.

[0004] When crushing reinforced concrete, the crushing process not only fails to untangle the reinforcing bars, but also forces them to become embedded or flattened within the crushed concrete due to the crushing action. Furthermore, the reinforcing bars are prone to tangling and bending during crushing, causing them to become tightly bound to the concrete. When using a magnetic separator later, the magnetic force cannot remove a section of reinforcing bar that is still firmly embedded in the concrete block at both ends. Forced suction only causes the entire mixture to be dragged along, making separation even more difficult. Summary of the Invention

[0005] The purpose of this section is to outline some aspects of embodiments of the present invention and to briefly describe some preferred embodiments. Simplifications or omissions may be made in this section, as well as in the abstract and title of this application, to avoid obscuring the purpose of these documents; however, such simplifications or omissions should not be construed as limiting the scope of the invention.

[0006] To address the problem mentioned in the background art where, during the crushing of reinforced concrete, the crushing process not only fails to untangle the intertwined steel bars but also forces them into the crushed concrete due to compaction, and the steel bars are prone to tangling and bending during crushing, resulting in the steel bars and concrete being tightly bound together, making it impossible to remove a section of steel bar with both ends still firmly embedded in the concrete block when using a magnetic separator, and forced suction only causes the entire mixture to be dragged along, making separation even more difficult, the present invention adopts the following technical solution.

[0007] A recycling and processing device for construction waste includes a mounting bracket. A jaw crusher for pre-crushing concrete is detachably connected to one side of the upper end of the mounting bracket. A feed inlet for feeding waste is detachably connected to one side of the jaw crusher. A straightening box for discharging reinforcing bars is detachably connected to the other side of the jaw crusher. A crusher for crushing the extracted reinforcing bar waste is detachably connected to the bottom of the straightening box. A support platform is fixedly connected to the bottom of the inner side of the straightening box. A comb mechanism is detachably connected to the upper end of the support platform. A combing mechanism is installed between the comb mechanism and the jaw crusher. The crushed concrete falls into the crusher below for crushing. The reinforcing bars move towards the comb mechanism through the combing mechanism and are straightened after passing through the comb mechanism.

[0008] Preferably, a cleaning mechanism is installed inside the straightening box located below the combing mechanism to clean the concrete stuck on the combing mechanism.

[0009] Preferably, a conveying mechanism is installed at the outlet of the straightening box, which can convey the steel bars to the clamp and outward.

[0010] Preferably, the comb mechanism includes a mounting base and a rotating shaft. The mounting bases are arranged opposite each other, the lower mounting base is detachably connected to the upper end of the support platform, and the upper mounting base is detachably connected to the inner top of the straightening box. There are multiple rotating shafts evenly distributed, and each rotating shaft is rotatably connected to the mounting bases on both sides. After the steel bar is conveyed by the combing mechanism, it passes through the space between every two rotating shafts.

[0011] Preferably, the combing mechanism includes a rotating shaft, a linkage gear, a meshing gear, combing teeth, and mounting rings. The rotating shaft is rotatably connected inside the straightening box and extends out of the straightening box at one end. The meshing gear is detachably connected to the extending end of the rotating shaft. A drive gear is installed on the jaw crusher. The linkage gear is rotatably connected to the outer wall of the straightening box and meshes with the meshing gear and the drive gear on the jaw crusher, causing the rotating shaft to rotate in the direction of the straightening box. There are multiple mounting rings, which are evenly distributed on the outer wall of the rotating shaft located inside the straightening box. Multiple combing teeth are fixedly connected to the outer wall of each mounting ring. The linkage gear causes the rotating shaft, combing teeth, and mounting rings to continuously convey the reinforcing bars and concrete towards the combing mechanism. When the multiple combing teeth rotate, they comb the disordered reinforcing bars and convey the material towards the combing mechanism.

[0012] Preferably, the cleaning mechanism includes a pressure plate and a through groove. The pressure plate is rotatably connected to the inside of the straightening box near the bottom. The pressure plate is in an inclined state and has multiple through grooves. Each through groove is opposite to the combing teeth. When the pressure plate swings back and forth, the inner wall of the through groove cleans the outer wall of the combing teeth.

[0013] Preferably, a linkage component is installed on the side wall of the straightening box, which causes the pressure plate to swing back and forth to clean the combing teeth.

[0014] Preferably, the linkage assembly includes a drive shaft, a first linkage plate, a connecting seat, and a second linkage plate. The drive shaft passes through the straightening box and is fixedly connected to the side wall of the pressure plate. The first linkage plate is fixedly connected to the end of the drive shaft. A connecting seat is detachably connected to one of the crushing rollers on the crusher. The second linkage plate is fixedly connected to the outer wall of the connecting seat. A limit block is provided on the inner wall of the straightening box. The limit block causes the pressure plate to be in an inclined state. When the crusher is running, it drives the connecting seat and the second linkage plate to rotate, thereby impacting the first linkage plate. This causes the first linkage plate to rotate, which drives the pressure plate to rotate upward through the drive shaft, and then it falls down by gravity.

[0015] Preferably, the conveying mechanism is capable of conveying the reinforcing bars outward. The conveying mechanism includes a moving roller, a power roller, a servo motor, sliding blocks, a connecting frame, and a telescopic cylinder. Sliding grooves are provided on both outer walls of the straightening box. The power roller is rotatably connected to the inside of the straightening box near the lower part. The moving roller is located inside the straightening box at the upper part. The sliding blocks are rotatably connected to both ends of the moving roller and are slidably connected to the inside of the sliding grooves. The connecting frame is fixedly connected to the upper ends of the sliding blocks on both sides. The telescopic cylinder is detachably connected to the upper end of the straightening box. The telescopic end of the telescopic cylinder passes through the straightening box and is detachably connected to the upper end of the connecting frame. The servo motor is detachably connected to the side wall of the straightening box, and its rotating end is detachably connected to one end of the power roller.

[0016] Preferably, the straightening box has a fixed internal connection with a feeding track for guidance.

[0017] Compared with the prior art, the beneficial effects of the present invention are as follows: 1. In this invention, the construction waste is pre-crushed by a jaw crusher, which can initially separate concrete and steel bars. The combing mechanism operates synchronously with the gears of the jaw crusher through the meshing transmission of the linkage gear. The uniformly distributed combing teeth continuously push the material and comb the steel bars, which can straighten the messy steel bar arrangement and allow the steel bars to enter the gap of the combing mechanism smoothly and orderly. At the same time, it helps to break up small pieces of concrete. The combing mechanism forms a regular straightening channel through multiple sets of rotatable rotating shafts, which can accurately straighten and correct the steel bars that are bent to the left and right. At the same time, the rotating structure of the rotating shaft can significantly reduce the frictional resistance during the steel bar transportation process, prevent the steel bars from bending and twisting again during the transportation process, and also prevent concrete blocks from moving synchronously with the steel bars, effectively preventing concrete from being carried out by the steel bars.

[0018] 2. In this invention, the cleaning mechanism can achieve linkage operation through the running power of the crusher, and continuously and automatically clean the concrete debris stuck between the combing teeth. The inclined pressure plate can form a shield and protection for the crusher inlet, which can effectively block the jumping concrete material during the crushing process and avoid the jumping concrete from hitting the combing mechanism above, causing structural damage and material accumulation.

[0019] 3. In this invention, the conveying mechanism can adjust the position of the moving roller through the telescopic cylinder to adapt to different specifications of steel bars to complete clamping and positioning. With the help of the servo motor to drive the power roller, the steel bars can be actively pulled and conveyed, which can provide stable traction power for the steel bars. During the outward conveying of the steel bars, the comb mechanism can block the concrete block wrapped around the outside of the steel bars. Through the reverse action of traction force and blocking force, the concrete wrapped around the surface of the steel bars can be forcibly peeled off, realizing the complete separation of steel bars and concrete. At the same time, it can complete the secondary straightening and correction of the steel bars that are bent up and down. Attached Figure Description

[0020] Figure 1 This is a schematic diagram of a construction waste recycling and processing device according to the present invention. Figure 2 This is a front view schematic diagram of the processing device in this invention; Figure 3 This is a side view of the processing device in this invention. Figure 4 This is a cross-sectional view of the processing device in this invention; Figure 5 This is a schematic diagram of the operation process of the processing device in this invention; Figure 6 This is a schematic diagram of the comb mechanism structure in this invention; Figure 7 This is a schematic diagram of the conveying mechanism in this invention; Figure 8 In this invention Figure 7 Enlarged structural diagram of section A; Figure 9 This is a schematic diagram of the cleaning mechanism structure in this invention; Figure 10 In this invention Figure 9 Enlarged structural diagram of section B.

[0021] The correspondence between the labels and component names in the attached figures is as follows: 100. Mounting bracket; 101. Feed inlet; 102. Jaw crusher; 103. Crusher; 104. Straightening box; 105. Sliding chute; 106. Discharge track; 107. Support platform; 200. Comb mechanism; 201. Mounting base; 202. Rotating shaft; 300. Combing mechanism; 301. Rotating shaft; 302. Linkage gear; 303. Meshing gear; 304. Combing teeth; 305. Mounting ring; 400. Cleaning mechanism; 401. Pressure plate; 402. Through slot; 403. Drive shaft; 404. First linkage plate; 405. Connecting seat; 406. Second linkage plate; 500. Conveying mechanism; 501. Moving roller; 502. Power roller; 503. Servo motor; 504. Sliding block; 505. Connecting frame; 506. Telescopic cylinder. Detailed Implementation

[0022] To make the above-mentioned objects, features and advantages of the present invention more apparent and understandable, the specific embodiments of the present invention will be described in detail below with reference to the accompanying drawings.

[0023] Many specific details are set forth in the following description in order to provide a full understanding of the invention. However, the invention may also be practiced in other ways different from those described herein, and those skilled in the art can make similar extensions without departing from the spirit of the invention. Therefore, the invention is not limited to the specific embodiments disclosed below.

[0024] Secondly, the term "one embodiment" or "embodiment" as used herein refers to a specific feature, structure, or characteristic that may be included in at least one implementation of the present invention. The phrase "in one embodiment" appearing in different places throughout this specification does not necessarily refer to the same embodiment, nor is it a single or selective embodiment that mutually excludes other embodiments. The present invention provides the following embodiments.

[0025] like Figure 1 , Figure 2 , Figure 3 as well as Figure 4The diagram shows a structural schematic of a construction waste recycling and processing device according to a preferred embodiment of the present invention. The construction waste recycling and processing device of this embodiment includes a mounting bracket 100. A jaw crusher 102 for pre-crushing concrete is detachably connected to one side of the upper end of the mounting bracket 100. A feed inlet 101 for feeding waste is detachably connected to one side of the jaw crusher 102. A straightening box 104 for discharging reinforcing bars is detachably connected to the other side of the jaw crusher 102. A guide rail 106 is fixedly connected inside the straightening box 104. A crusher 103 for crushing and extracting reinforcing bar waste is detachably connected to the bottom of the straightening box 104. The crusher 103 consists of a shell, two crushing rollers, two gears, and a drive assembly. In this embodiment, waste is fed through the feed inlet 101, and the jaw crusher 102 breaks up the concrete and reinforcing bars. The concrete falls into the crusher 103 below for crushing, while the reinforcing bars are discharged outward through the straightening box 104.

[0026] To straighten tangled or bent reinforcing bars and prevent them from being encased in concrete, which would hinder their extraction, a specific structural design can be adopted as follows: Figure 4 , Figure 5 as well as Figure 6 In the embodiment shown, a support platform 107 is fixedly connected to the bottom inner side of the straightening box 104. A comb mechanism 200 is detachably connected to the upper end of the support platform 107. A combing mechanism 300 is installed between the comb mechanism 200 and the jaw crusher 102. The crushed concrete falls into the crusher 103 below for crushing. The reinforcing bars move towards the comb mechanism 200 through the comb mechanism 300. After passing through the comb mechanism 200, the reinforcing bars are straightened. In this embodiment, through the coordinated cooperation of the comb mechanism 300 and the comb mechanism 200, the tangled or bent reinforcing bars can be initially untangled and straightened, and the concrete stuck on the reinforcing bars can be removed. Furthermore, through the setting of the comb mechanism 200, concrete blocks can be blocked and the reinforcing bars can be finally straightened, preventing the concrete from being carried out.

[0027] The specific structure of the comb mechanism 200 can be as follows: Figure 6 In the illustrated embodiment, the comb mechanism 200 includes a mounting base 201 and a rotating shaft 202. The mounting bases 201 are arranged vertically opposite each other. The lower mounting base 201 is detachably connected to the upper end of the support platform 107, and the upper mounting base 201 is detachably connected to the inner top of the straightening box 104. There are multiple rotating shafts 202 evenly distributed, and each rotating shaft 202 is rotatably connected to the mounting bases 201 on both sides. In this embodiment, after the reinforcing bar is conveyed by the combing mechanism 300, it passes between every two rotating shafts 202, thereby straightening the left and right bent reinforcing bars. By rotating the rotating shafts 202, the friction between the reinforcing bars and the rotating shafts 202 can be reduced when the reinforcing bars pass through.

[0028] The specific structure of the organization 300 can be adopted as follows: Figure 1 as well as Figure 6 In this embodiment, the combing mechanism 300 includes a rotating shaft 301, a linkage gear 302, a meshing gear 303, combing teeth 304, and mounting rings 305. The rotating shaft 301 is rotatably connected to the inside of the straightening box 104 and one end extends out of the straightening box 104. The meshing gear 303 is detachably connected to the end of the rotating shaft 301. A drive gear is mounted on the jaw crusher (102). The linkage gear (302) is rotatably connected to the outer wall of the straightening box (104) and meshes with the meshing gear (303) and the drive gear on the jaw crusher (102), causing the rotating shaft 301 to rotate in the direction of the straightening box 104. There are multiple and evenly spaced mounting rings 305. The combing mechanism 300 has multiple combing teeth 304 fixedly connected to the outer wall of each mounting ring 305 located inside the straightening box 104 on the rotating shaft 301. In this embodiment, the pre-crushed concrete and steel bars are located above the combing mechanism 300. The rotating shaft 301, combing teeth 304 and mounting ring 305 continuously convey the steel bars and concrete towards the combing mechanism 200 through the setting of the linkage gear 302. The multiple combing teeth 304 can sweep away the concrete stuck between two steel bars and comb the messy steel bars, making it easier for the steel bars to enter between each pair of mounting bases 201, and can also assist in crushing the concrete.

[0029] During the rotation of the combing mechanism 300, concrete may get stuck between the two combing teeth 304, easily pushing the reinforcing bars upwards repeatedly, causing the bars to become more bent. Furthermore, the falling concrete lands at the inlet of the crusher 103, and during crushing, it is prone to bouncing and impacting the upper combing teeth 304. To avoid this, a specific structure can be adopted as follows: Figure 9 as well as Figure 10In the embodiment shown, a cleaning mechanism 400 is installed inside the straightening box 104 located below the combing mechanism 300. The cleaning mechanism 400 cleans the concrete stuck on the combing mechanism 300. The cleaning mechanism 400 includes a pressure plate 401 and a through groove 402. The pressure plate 401 is rotatably connected to the inner side of the straightening box 104 near the bottom. A drive shaft 403 passes through the straightening box 104 and is fixedly connected to the side wall of the pressure plate 401. A first linkage plate 404 is fixedly connected to the end of the drive shaft 403. A connecting seat 405 is detachably connected to one of the crushing rollers on the crusher 103. A second linkage plate 406 is fixedly connected to the outer wall of the connecting seat 405. The pressure plate 401 is provided with a plurality of through grooves 402, each through groove 402 being connected to the comb. The combing teeth 304 are positioned opposite each other, and the inner wall of the straightening box 104 is provided with a limiting block. The limiting block causes the pressure plate 401 to be in an inclined state. In this embodiment, when the crusher 103 is running, it will drive the connecting seat 405 and the second linkage plate 406 to rotate, thereby impacting the first linkage plate 404. This causes the first linkage plate 404 to rotate, which drives the pressure plate 401 to rotate upward through the transmission shaft 403. Then, it falls down by gravity, thereby continuously cleaning the outer wall of the combing teeth 304 and preventing concrete from getting stuck. By setting the limiting block, the rotation position of the cleaning mechanism 400 can be restricted, preventing the cleaning mechanism 400 from blocking the inlet of the crusher 103. It can also prevent the concrete from bouncing upward and impacting the combing mechanism 300 when it is crushed by the crusher 103.

[0030] After the waste material is pre-crushed by the jaw crusher 102, the concrete may be trapped around the reinforcing bars. The sorting mechanism 300 alone cannot effectively convey the reinforcing bars or separate the concrete. To provide conveying force for the reinforcing bars, a specific structure can be adopted as follows: Figure 4 , Figure 7 as well as Figure 8In the embodiment shown, a conveying mechanism 500 is installed at the outlet of the straightening box 104. The conveying mechanism 500 can convey the reinforcing bars outward. The conveying mechanism 500 includes a moving roller 501, a power roller 502, a servo motor 503, a sliding block 504, a connecting frame 505, and a telescopic cylinder 506. Sliding grooves 105 are provided on both outer walls of the straightening box 104. The power roller 502 is rotatably connected to the inside of the straightening box 104 near the lower part. The moving roller 501 is located inside the straightening box 104 at the upper part. The sliding blocks 504 are rotatably connected to both ends of the moving roller 501 and are slidably connected to the inside of the sliding grooves 105. The connecting frame 505 is fixedly connected to the upper end of the two sliding blocks 504. The telescopic cylinder 506 is detachably connected to the upper end of the straightening box 104. The telescopic end of the telescopic cylinder 506 passes through the straightening box 104 and is detachably connected to the upper end of the connecting frame 505. The servo motor 503 is detachably connected to the side wall of the straightening box 104, and its rotating end is detachably connected to one end of the power roller 502. In this embodiment, when the steel bar slowly moves between the moving roller 501 and the power roller 502 during crushing, the telescopic cylinder 506 extends, causing the moving roller 501 to fall and clamp the steel bar. In conjunction with the servo motor 503 driving the power roller 502 to rotate, the steel bar can be actively pulled. When the concrete is wrapped around the steel bar, the comb mechanism 200 can block the concrete from passing through. In conjunction with the conveying mechanism 500, the steel bar is actively conveyed outward, making the separation of concrete and steel bar more thorough. It can also straighten the steel bar that is bent vertically.

[0031] The above description, in conjunction with specific embodiments, provides a further detailed explanation of the present invention. It should not be construed that the specific implementation of the present invention is limited to these descriptions. For those skilled in the art, several simple deductions or substitutions can be made without departing from the concept of the present invention, and all such deductions or substitutions should be considered to fall within the scope of protection defined by the claims submitted herein.

Claims

1. A recycling and processing device for construction waste, comprising a mounting bracket (100), wherein a jaw crusher (102) for pre-crushing concrete is detachably connected to one side of the upper end of the mounting bracket (100), a feed inlet (101) for feeding waste is detachably connected to one side of the jaw crusher (102), a straightening box (104) for discharging reinforcing bars is detachably connected to the other side of the jaw crusher (102), and a crusher (103) for crushing the extracted reinforcing bar waste is detachably connected to the bottom of the straightening box (104), characterized in that, A support platform (107) is fixedly connected to the bottom inner side of the straightening box (104). A comb mechanism (200) is detachably connected to the upper end of the support platform (107). A combing mechanism (300) is installed between the comb mechanism (200) and the jaw crusher (102). The concrete crushed falls into the crusher (103) below for crushing. The reinforcing bars move towards the comb mechanism (200) through the combing mechanism (300). The reinforcing bars are straightened after passing through the comb mechanism (200).

2. The recycling and reuse device for construction waste according to claim 1, characterized in that, The straightening box (104) is located inside the combing mechanism (300) and has a cleaning mechanism (400) installed inside. The cleaning mechanism (400) cleans the concrete stuck on the combing mechanism (300).

3. The recycling and reuse device for construction waste according to claim 1, characterized in that, A conveying mechanism (500) is installed at the outlet of the straightening box (104), which can convey the steel bars to the clamp and outward.

4. The recycling and reuse device for construction waste according to claim 1, characterized in that, The comb mechanism (200) includes a mounting base (201) and a rotating shaft (202). The mounting bases (201) are arranged opposite each other. The lower mounting base (201) is detachably connected to the upper end of the support platform (107), and the upper mounting base (201) is detachably connected to the inner top of the straightening box (104). There are multiple rotating shafts (202) evenly distributed. Each rotating shaft (202) is rotatably connected to the mounting bases (201) on both sides. After the steel bar is conveyed by the combing mechanism (300), it passes between every two rotating shafts (202).

5. The recycling and reuse device for construction waste according to claim 2, characterized in that, The combing mechanism (300) includes a rotating shaft (301), a linkage gear (302), a meshing gear (303), combing teeth (304), and a mounting ring (305). The rotating shaft (301) is rotatably connected to the inside of the straightening box (104) and one end extends out of the straightening box (104). The meshing gear (303) is detachably connected to the end of the rotating shaft (301). A drive gear is mounted on the jaw crusher (102). The linkage gear (302) is rotatably connected to the outer wall of the straightening box (104) and meshes with the meshing gear (303) and the drive gear on the jaw crusher (102), so that the rotating shaft... The shaft (301) rotates toward the straightening box (104). Multiple mounting rings (305) are evenly distributed on the outer wall inside the straightening box (104) where the shaft (301) is located. Multiple combing teeth (304) are fixedly connected to the outer wall of each mounting ring (305). The linkage gear (302) causes the shaft (301), combing teeth (304) and mounting rings (305) to continuously convey steel bars and concrete toward the combing mechanism (200). When the multiple combing teeth (304) rotate, they comb the disordered steel bars and convey the material toward the combing mechanism (200).

6. The recycling and reuse device for construction waste according to claim 5, characterized in that, The cleaning mechanism (400) includes a pressure plate (401) and a through groove (402). The pressure plate (401) is rotatably connected to the inside of the straightening box (104) near the bottom. The pressure plate (401) is in an inclined state. Multiple through grooves (402) are provided on the pressure plate (401). Each through groove (402) is opposite to the combing tooth (304). When the pressure plate (401) swings back and forth, the inner wall of the through groove (402) cleans the outer wall of the combing tooth (304).

7. The recycling and reuse device for construction waste according to claim 6, characterized in that, The straightening box (104) is equipped with a linkage component on its side wall. The linkage component causes the pressure plate (401) to swing back and forth to clean the combing teeth (304).

8. The recycling and reuse device for construction waste according to claim 7, characterized in that, The linkage assembly includes a drive shaft (403), a first linkage plate (404), a connecting seat (405), and a second linkage plate (406). The drive shaft (403) passes through the straightening box (104) and is fixedly connected to the side wall of the pressure plate (401). The end of the drive shaft (403) is fixedly connected to the first linkage plate (404). One of the crushing rollers on the crusher (103) is detachably connected to the connecting seat (405). The outer wall of the connecting seat (405) is fixedly connected to the second linkage plate (406). The inner wall of the straightening box (104) is provided with a limit block. The limit block makes the pressure plate (401) tilted. When the crusher (103) is running, it will drive the connecting seat (405) and the second linkage plate (406) to rotate, thereby impacting the first linkage plate (404). The first linkage plate (404) rotates and drives the pressure plate (401) to rotate upward through the drive shaft (403), and then falls down by gravity.

9. The recycling and reuse device for construction waste according to claim 3, characterized in that, The conveying mechanism (500) can convey steel bars outward. The conveying mechanism (500) includes a moving roller (501), a power roller (502), a servo motor (503), a sliding block (504), a connecting frame (505), and a telescopic cylinder (506). The straightening box (104) has sliding grooves (105) on both outer walls. The power roller (502) is rotatably connected to the inside of the straightening box (104) near the bottom. The moving roller (501) is located inside the straightening box (104) at the top. The sliding block (504) rotates... The moving roller (501) is connected to both ends of the moving roller (501) and is slidably connected to the inside of the sliding groove (105). The connecting frame (505) is fixedly connected to the upper end of the sliding blocks (504) on both sides. The telescopic cylinder (506) is detachably connected to the upper end of the straightening box (104). The telescopic end of the telescopic cylinder (506) passes through the straightening box (104) and is detachably connected to the upper end of the connecting frame (505). The servo motor (503) is detachably connected to the side wall of the straightening box (104), and its rotating end is detachably connected to one end of the power roller (502).

10. The recycling and reuse device for construction waste according to claim 1, characterized in that, The straightening box (104) has a fixed internal connection with a feeding track (106) for guidance.

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