A garbage crushing and recycling device for road and bridge construction

Abstract

This invention discloses a waste crushing and recycling device for road and bridge construction, belonging to the field of crushing technology. The device includes a vehicle body, with an on-site crushing mechanism and a transfer mechanism installed at the front end of the vehicle body. The feeding end of the transfer mechanism is opposite to the on-site crushing mechanism, and the discharging end of the transfer mechanism is opposite to the vehicle-mounted crushing mechanism on the vehicle body. The discharging end of the vehicle-mounted crushing mechanism is connected to a sand making machine on the vehicle body. The discharging end of the sand making machine is equipped with an adjustable discharge mechanism, realizing on-site crushing and conveying to the vehicle-mounted crushing mechanism for secondary crushing. After passing through the sand making machine on the vehicle body, sand is directly produced, realizing the function of on-site crushing and recycling. At the same time, the adjustable discharge mechanism allows the recycled material to be placed in a suitable location on-site, eliminating the need for a large storage area. The on-site crushing mechanism is equipped with a detection unit and a cutting unit, making it suitable for crushing and processing road surfaces containing reinforced concrete, improving construction efficiency and safety.

Description

Technical Field

[0001] This invention relates to the field of crushing technology, and in particular to a waste crushing and recycling device for road and bridge construction. Background Technology

[0002] During the repair and construction of roads and bridges, a significant amount of construction waste is generated. Current technologies typically involve crushing and sand-making this waste for reuse. Existing mobile crushing and sand-making equipment integrates crushing and sand-making machines. For example, patent CN111871582B discloses a construction waste recycling equipment and process for construction sites, including a pre-crushing section, a washing section, and a grading crushing section. The pre-crushing section includes a processing table with a first feed inlet on one side for coarser materials. A first impact device is connected after the first feed inlet. The system is configured such that a first bombardment device is followed by a first feeding platform, which in turn is followed by a second bombardment device, which is followed by a second feeding platform. A conveyor belt is then connected to the second feeding platform, with a second feed inlet located above one end of the conveyor belt. The washing section includes a water tank containing a lifting conveyor belt, which is followed by a receiving hopper. The washing section is then connected to a grading and crushing section. This section includes a fine crushing box containing a fine crushing device. The fine crushing box has a first and a second feeding channel below it. The first feeding channel is followed by a crushing device, and the second feeding channel is followed by a receiving hopper. However, the following problems still exist: (1) After the damaged road surface is initially crushed by hammering equipment, the crushed concrete blocks are transported to the feed port of the crushing device by excavator or loader. The work efficiency is low and the material location is relatively concentrated, requiring a large storage area.

[0003] (2) For concrete pavement containing steel bars, it is necessary to conduct a preliminary inspection and then use a shearing machine to cut it to avoid the danger caused by steel bars flying during the breaking process. Summary of the Invention

[0004] The purpose of this invention is to provide a waste crushing and recycling device for road and bridge construction, thereby solving the above-mentioned technical problems.

[0005] To achieve the above objectives, the present invention provides a waste crushing and recycling device for road and bridge construction, comprising a vehicle body, an on-site crushing mechanism and a transfer mechanism at the forward end of the vehicle body, the feeding end of the transfer mechanism being opposite to the on-site crushing mechanism, the discharging end of the transfer mechanism being opposite to the vehicle-mounted crushing mechanism on the vehicle body, the discharging end of the vehicle-mounted crushing mechanism being connected to a sand making machine on the vehicle body, and the discharging end of the sand making machine being provided with an adjustable discharging mechanism; the on-site crushing mechanism includes a mounting frame, on which a detection unit, a cutting unit, a crushing unit and a hammering unit are sequentially mounted; the detection unit, the cutting unit, the crushing unit and the hammering unit are all electrically connected to a control terminal inside the vehicle body; The transfer mechanism, the vehicle-mounted crushing mechanism, the sand making machine, and the adjustable discharge mechanism are all electrically connected to the control terminal inside the vehicle.

[0006] Preferably, the detection unit includes several transmission gears arranged in parallel on the mounting frame, adjacent transmission gears meshing with each other, an extension arm mounted on the transmission gear, a metal detector and an image acquisition device mounted on the extension arm, and one of the transmission gears being connected to the detection drive motor via a gear, the detection drive motor being mounted on the mounting frame. The image acquisition unit, metal detector, and detection drive motor are all electrically connected to the control terminal.

[0007] Preferably, the cutting unit includes an adjusting shaft and several mounting blocks arranged in parallel on the adjusting shaft. The sliders on the side of the mounting blocks are set in the spiral adjusting groove opened on the circumference of the adjusting shaft. One end of the adjusting shaft is connected to a cutting adjusting drive motor, which is mounted on a mounting frame. The mounting blocks are slidably mounted on a guide shaft. A cutting lifting hydraulic cylinder is set at the bottom of the mounting blocks. A cutting angle adjusting drive motor is installed at the telescopic end of the cutting lifting hydraulic cylinder. The output shaft of the cutting angle adjusting drive motor is connected to a cutting machine. The cutting distance adjustment drive motor, the cutting lifting hydraulic cylinder, the cutting angle adjustment drive motor, and the cutting machine are all electrically connected to the control terminal.

[0008] Preferably, the breaking unit includes a guide frame, a fixing groove is provided on the inner side of the guide frame, a clamping plate is provided in the fixing groove, the two ends of the clamping plate are provided in the through holes of the guide frame, wherein a first wedge is provided at one end of the clamping plate, the first wedge is arranged opposite to a second wedge, the second wedge is connected to a connecting frame, the connecting frame is connected to a top clamping rack, the top clamping rack meshes with a top clamping gear, the top clamping gear meshes with a positioning rack, the positioning rack and the top clamping rack are both slidably arranged on the guide frame, a motor screw structure is provided on one side of the guide frame, a movable seat is provided on the motor screw structure, an attraction electromagnet is provided on the movable seat, the attraction electromagnet is arranged opposite to a number of breaking lifting hydraulic cylinders arranged in parallel in the guide frame, a fixing plate on the side of the breaking lifting hydraulic cylinder is provided in the fixing groove, a pneumatic hammer is provided at the telescopic end of the breaking lifting hydraulic cylinder, a breaking angle adjustment drive motor is provided at one end of the guide frame, and the breaking angle adjustment drive motor is arranged on a mounting frame; The motor lead screw structure, the adsorption electromagnet, the hydraulic cylinder for breaking and lifting, the pneumatic pick, and the motor for breaking and adjusting angle are all electrically connected to the control terminal.

[0009] Preferably, the hammering unit includes several hammering lifting hydraulic cylinders arranged in parallel on the mounting frame. The telescopic end of the hammering lifting hydraulic cylinder is provided with an inverted U-shaped mounting plate, and the two ends of the inverted U-shaped mounting plate are respectively connected to a shredding blade and a crushing plate. The hammer-lifting hydraulic cylinder is electrically connected to the control terminal.

[0010] Preferably, the transfer mechanism includes a transfer lifting hydraulic cylinder mounted on a mounting frame. The telescopic end of the transfer lifting hydraulic cylinder is connected to a bucket. An actuation unit is provided on the mounting frame above the bucket. The actuation unit includes an actuation drive motor. The output shaft of the actuation drive motor is connected to an actuation gear. A actuation rack meshes on both sides of the actuation gear. The connecting block of the actuation rack passes through the through hole of the mounting frame and is connected to an actuation frame. The actuation frame includes a fixed plate, a passive plate, and an active plate. One end of the fixed plate is fixed to the connecting block. One end of the passive plate and the active plate are rotatably connected to the connecting block. One end of the active plate is connected to the opening and closing drive hydraulic cylinder. Several passive plates are provided and connected sequentially by flexible ropes. The first passive plate is connected to the fixed plate by a flexible rope, and the last passive plate is connected to the active plate by a flexible rope. The mounting frame is equipped with L-shaped baffles on both sides, and a transfer conveyor is installed inside the L-shaped baffles. The discharge end of the transfer conveyor is positioned opposite to the vehicle-mounted crushing mechanism. The transfer lifting hydraulic cylinder, the toggle drive motor, the opening and closing drive hydraulic cylinder, and the transfer conveyor are all electrically connected to the control terminal.

[0011] Preferably, the bottom of the L-shaped baffle is provided with a telescopic groove, and a telescopic plate is connected to the telescopic groove by a spring. An arc-shaped baffle is connected to the other end of the active plate, and a flexible protective net is detachably connected between the active plate and the fixed plate.

[0012] Preferably, the mounting frame is equipped with a protective curtain and a spray pipe, and the spray pipe is connected to the water tank on the vehicle body through a spray pump; The mounting frame is equipped with support lifting hydraulic cylinders on both sides of the middle section. The telescopic ends of the support lifting hydraulic cylinders are connected to support rollers. The tail end of the mounting frame is hinged to the vehicle body. The hydraulic cylinder supporting the lifting mechanism and the spray pump are electrically connected to the control terminal.

[0013] Preferably, the vehicle-mounted crushing mechanism includes a main crusher, a feeding conveyor is provided at the feeding end of the main crusher, a discharge conveyor is provided at the discharge end of the main crusher, and a magnetic separator is provided on the discharge conveyor. The main crusher is an impact crusher or a jaw crusher. The main crusher, feed conveyor, and discharge conveyor are all electrically connected to the control terminal.

[0014] Preferably, the adjustable discharge mechanism includes a discharge angle adjusting turntable, on which a telescopic conveyor is installed, and both the discharge angle adjusting turntable and the telescopic conveyor are electrically connected to the control terminal.

[0015] Therefore, the present invention employs the above-mentioned waste crushing and recycling device for road and bridge construction, which has the following beneficial effects: (1) The front end of the vehicle body is equipped with an on-site crushing mechanism and a transfer mechanism. The feed end of the transfer mechanism is opposite to the on-site crushing mechanism, and the discharge end of the transfer mechanism is opposite to the vehicle-mounted crushing mechanism on the vehicle body. The discharge end of the vehicle-mounted crushing mechanism is connected to the sand making machine on the vehicle body. The discharge end of the sand making machine is equipped with an adjustable discharge mechanism, which realizes on-site crushing and conveys the material to the vehicle-mounted crushing mechanism for secondary crushing. The material is then directly crushed by the sand making machine on the vehicle body, realizing the function of on-site crushing and recycling. At the same time, the recycled material is placed in a suitable location on-site through the adjustable discharge mechanism, without the need for a large storage area.

[0016] (2) The on-site crushing mechanism is equipped with a detection unit and a cutting unit, which is suitable for crushing road surfaces containing reinforced concrete, thereby improving construction efficiency and safety.

[0017] The technical solution of the present invention will be further described in detail below with reference to the accompanying drawings and embodiments. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of a waste crushing and recycling device for road and bridge construction according to the present invention; Figure 2 This is a top view of the on-site crushing mechanism and transfer mechanism of the present invention; Figure 3 This is a three-dimensional structural diagram of the on-site crushing mechanism and the transfer mechanism of the present invention; Figure 4 This is a schematic diagram of the on-site crushing mechanism of the present invention; Figure 5 This is a schematic diagram of the adjustable shaft structure of the present invention; Figure 6 This is a partial structural diagram of the breaking unit of the present invention; Figure 7 This is a schematic diagram of one end of the clamping plate of the present invention; Figure 8 This is a schematic diagram of the toggle frame structure of the present invention.

[0019] Figure Labels 1. Vehicle body; 2. On-site crushing mechanism; 21. Mounting frame; 211. Protective curtain; 212. Spray pipe; 213. Support lifting hydraulic cylinder; 214. Support roller; 22. Detection unit; 221. Transmission gear; 222. Extension arm; 223. Metal detector; 224. Image acquisition unit; 225. Detection drive motor; 23. Cutting unit; 231. Adjustable distance shaft; 232. Mounting block; 233. Spiral adjustable distance groove; 234. Cutting... 235. Cutting angle adjustment drive motor; 236. Guide shaft; 237. Cutting lifting hydraulic cylinder; 238. Cutting angle adjustment drive motor; 239. Cutting machine; 240. Breaking unit; 241. Guide frame; 242. Fixing groove; 243. Clamping plate; 244. First wedge; 245. Second wedge; 246. Connecting frame; 247. Tightening rack; 248. Tightening gear; 249. Positioning rack; 2410. Motor lead screw structure; 2411. Movement 2412. Electromagnetic magnet; 2413. Hydraulic cylinder for crushing and lifting; 2414. Pneumatic pick; 2415. Angle-adjusting drive motor for crushing; 25. Hammering unit; 251. Hydraulic cylinder for hammering and lifting; 252. Inverted U-shaped mounting plate; 253. Shredder; 254. Crushing plate; 3. Transfer mechanism; 31. Transfer lifting hydraulic cylinder; 32. Bucket; 33. Drive motor for actuation; 34. Gear actuation; 35. Rack actuation; 36. Actuation frame; 361. Fixed plate; 362. Passive plate; 363. Active plate; 364. Opening and closing drive hydraulic cylinder; 365. Arc-shaped baffle; 37. L-shaped baffle plate; 371. Telescopic plate; 38. Transfer conveyor; 4. Vehicle-mounted crushing mechanism; 41. Main crusher; 42. Feed conveyor; 43. Discharge conveyor; 44. Magnetic separator; 5. Sand making machine; 6. Adjustable discharge mechanism; 61. Material angle adjusting turntable; 62. Telescopic conveyor; 7. Water tank. Detailed Implementation

[0020] In the description of this invention, it should be noted that the terms "upper," "lower," "inner," and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, or the orientation or positional relationship commonly used when the product is in use. They are used only for the convenience of describing the invention 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. Therefore, they should not be construed as limitations on the invention. In the description of this invention, it should also be noted that, unless otherwise explicitly specified and limited, the terms "set," "install," and "connect" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal communication between two components. Those skilled in the art can understand the specific meaning of the above terms in this invention based on the specific circumstances.

[0021] The embodiments of the present invention will now be described in detail with reference to the accompanying drawings.

[0022] like Figure 1 As shown, a waste crushing and recycling device for road and bridge construction includes a vehicle body 1. The front end of the vehicle body 1 is provided with an on-site crushing mechanism 2 and a transfer mechanism 3. The feeding end of the transfer mechanism 3 is opposite to the on-site crushing mechanism 2. The discharge end of the transfer mechanism 3 is opposite to the vehicle-mounted crushing mechanism 4 on the vehicle body 1. The discharge end of the vehicle-mounted crushing mechanism 4 is connected to a sand making machine 5 on the vehicle body 1. The discharge end of the sand making machine 5 is provided with an adjustable discharge mechanism 6.

[0023] like Figure 2 - Figure 4 As shown, the on-site crushing mechanism 2 includes a mounting frame 21, on which a detection unit 22, a cutting unit 23, a crushing unit 24 and a hammering unit 25 are sequentially mounted.

[0024] The detection unit 22 is used to collect road surface images and the location of internal reinforcing bars. The detection unit 22 includes several transmission gears 221 arranged in parallel on the mounting frame 21. Adjacent transmission gears 221 mesh with each other. An extension arm 222 is installed on the transmission gear 221. In this embodiment, an extension arm 222 is installed every other transmission gear 221. The number of extension arms 222 can be increased or decreased according to the actual detection density requirements. A metal detector 223 and an image acquisition device 224 are installed on the extension arm 222. One of the transmission gears 221 is connected to the detection drive motor 225 through a gear. The detection drive motor 225 is installed on the mounting frame 21. The image acquisition device 224, the metal detector 223, and the detection drive motor 225 are all electrically connected to the control terminal.

[0025] The detection drive motor 225 is started, causing the transmission gear 221 to rotate within a set angle range, thereby realizing image acquisition and metal detection of the road surface, which facilitates subsequent control.

[0026] When the metal detector 223 detects the presence of reinforcing steel, the cutting unit 23 is activated to initially cut and then break up the road surface. The cutting unit 23 includes an adjustable shaft 231 and several mounting blocks 232 arranged side by side on the adjustable shaft 231. The sliders on the sides of the mounting blocks 232 are disposed within the spiral adjustable grooves 233 opened on the circumference of the adjustable shaft 231. Figure 5As shown, there are two spiral adjustment grooves 233 on the adjustment shaft 231, which are mirror images of each other. One end of the adjustment shaft 231 is connected to a cutting adjustment drive motor 234, which is mounted on the mounting bracket 21. The mounting block 232 is slidably mounted on the guide shaft 235. A cutting lifting hydraulic cylinder 236 is provided at the bottom of the mounting block 232. A cutting angle adjustment drive motor 237 is installed at the telescopic end of the cutting lifting hydraulic cylinder 236. The output shaft of the cutting angle adjustment drive motor 237 is connected to the cutting machine 238. The cutting adjustment drive motor 234, the cutting lifting hydraulic cylinder 236, the cutting angle adjustment drive motor 237, and the cutting machine 238 are all electrically connected to the control terminal.

[0027] Based on the detected position of the reinforcing bars, the cutting adjustment drive motor 234 is started, so that the mounting block 232, under the action of the slider and guide shaft 235 in the spiral adjustment groove 233, drives several cutting lifting hydraulic cylinders 236 to move closer or further away at equal intervals. Since the reinforcing bars are generally arranged at equal intervals, this application adopts an equal interval adjustment mechanism to adjust each cutting position. After the adjustment is completed, the cutting lifting hydraulic cylinders 236 and the cutting angle adjustment drive motor 237 are started, so that the cutting machine 238 cuts the ground.

[0028] After cutting, further crushing is required. The crushing unit 24 includes a guide frame 241, such as... Figure 6 As shown, a fixing groove 242 is provided on the inner side of the guide frame 241, and a clamping plate 243 is provided in the fixing groove 242. The two ends of the clamping plate 243 are set in the through holes of the guide frame 241. A first wedge 244 is provided at one end of the clamping plate 243. The first wedge 244 and a second wedge 245 are arranged opposite to each other. The second wedge 245 is connected to a connecting frame 246. The connecting frame 246 is connected to a clamping rack 247. The clamping rack 247 meshes with a clamping gear 248. The clamping gear 248 meshes with a positioning rack 249. The positioning rack 249 and the clamping rack 247 are slidably mounted on the guide frame 241. A motor screw structure 2410 is provided on one side of the guide frame 241. A movable base 2411 is provided, on which an electromagnet 2412 is installed. The electromagnet 2412 is positioned opposite to several hydraulic cylinders 2413 that are arranged in parallel within a guide frame 241. The fixing plate 361 on the side of the hydraulic cylinder 2413 is located in a fixing groove 242. A pneumatic hammer 2414 is installed at the telescopic end of the hydraulic cylinder 2413. A breaking angle adjustment drive motor 2415 is installed at one end of the guide frame 241 and is mounted on a mounting frame 21. The motor screw structure 2410, the electromagnet 2412, the hydraulic cylinder 2413, the pneumatic hammer 2414, and the breaking angle adjustment drive motor 2415 are all electrically connected to a control terminal.

[0029] Because the locations of road surface defects such as cracks, potholes, or bulges are irregular, operators adjust the breaking unit 24 based on the actual road surface conditions collected. First, the position of the pneumatic pick 2414 is adjusted according to the defect location. The motor screw structure 2410 is activated, causing the moving seat 2411 to reach the position of the corresponding breaking lifting hydraulic cylinder 2413. After the electromagnet 2412 is energized, it grips the corresponding breaking lifting hydraulic cylinder 2413. Once moved to the set position, the electromagnet 2412 is de-energized, releasing the breaking lifting hydraulic cylinder 2413. After multiple breaking lifting hydraulic cylinders 2413 have been sequentially adjusted, the motor screw structure 2410 returns the moving seat 2411 to its initial position, pressing the positioning rack 249. The clamping gear 248 rotates, thereby driving the clamping rack 247 to move inward towards the guide frame 241. Figure 7 As shown, the first wedge 244 presses against the second wedge 245, causing the clamping plate 243 to move downwards and clamp several hydraulic cylinders 2413, thus fixing the positions of the multiple hydraulic cylinders 2413. Then, the angle is adjusted according to the actual hardness of the road surface and the crack cylinder, determining the tilt angle of the pneumatic pick 2414. When the road surface is intact and relatively hard, the pneumatic pick 2414 uses vertical hammering to provide maximum impact force, quickly and effectively destroying the material structure. When the road surface material is softer or in areas with existing cracks, the pneumatic pick 2414 uses a 45°-60° tilt angle to reduce rebound force, allowing energy to be transferred more evenly to the interior of the material, helping to gradually expand the crack without causing excessive vibration.

[0030] After being broken down, the concrete blocks are relatively large and require further crushing using a hammering unit 25. The hammering unit 25 includes several hammering lifting hydraulic cylinders 251 arranged side-by-side on a mounting frame 21. Each hammering lifting hydraulic cylinder 251 has an inverted U-shaped mounting plate 252 at its telescopic end. The two ends of the inverted U-shaped mounting plate 252 are respectively connected to a cutting blade 253 and a crushing plate 254. The hammering lifting hydraulic cylinders 251 are electrically connected to a control terminal. By hammering and crushing larger concrete blocks, the presence of large concrete blocks is greatly reduced, facilitating subsequent transfer and crushing.

[0031] The transfer mechanism 3 includes a transfer lifting hydraulic cylinder 31 mounted on a mounting frame 21. The telescopic end of the transfer lifting hydraulic cylinder 31 is connected to a bucket 32. An actuating unit is mounted on the mounting frame 21 above the bucket 32. The actuating unit includes an actuating drive motor 33. The output shaft of the actuating drive motor 33 is connected to an actuating gear 34. Actuating racks 35 mesh on both sides of the actuating gear 34. The connecting block of the actuating rack 35 passes through a through hole in the mounting frame 21 and is connected to an actuating frame 36. The actuating frame 36 includes a fixed plate 361, a passive plate 362, and an active plate 363. The fixed plate 361... One end is fixed to the connecting block. One end of the passive plate 362 and the active plate 363 are rotatably connected to the connecting block. One end of the active plate 363 is connected to the opening and closing drive hydraulic cylinder 364. Several passive plates 362 are provided and connected in sequence by flexible ropes. The first passive plate 362 is connected to the fixed plate 361 by a flexible rope, and the last passive plate 362 is connected to the active plate 363 by a flexible rope. The other end of the active plate 363 is connected to an arc-shaped baffle 365. A flexible protective net is detachably connected between the active plate 363 and the fixed plate 361 to facilitate the movement of crushed materials. L-shaped baffles 37 are provided on both sides of the mounting frame 21. A transfer conveyor 38 is provided inside the L-shaped baffles 37. The discharge end of the transfer conveyor 38 is opposite to the vehicle-mounted crushing mechanism 4. The transfer lifting hydraulic cylinder 31, the actuation drive motor 33, the opening and closing drive hydraulic cylinder 364, and the transfer conveyor 38 are all electrically connected to the control terminal.

[0032] The bottom of the L-shaped baffle plate 37 has a telescopic groove, and the telescopic plate 371 is connected to the telescopic groove by a spring, which is suitable for uneven road surfaces.

[0033] The crushed material is relatively small in size. The extension of the transfer and lifting hydraulic cylinder 31 causes the bucket 32 ​​to fit against the bottom of the crushed material. As the vehicle body 1 moves forward, the material is stored in the bucket. When the two actuating frames 36 are in the middle position of the bucket 32, the opening and closing drive hydraulic cylinder 364 extends. Figure 8 As shown, the actuating frame 36 unfolds, and the actuating drive motor 33 is started, causing the two actuating frames 36 to move to both sides, transferring the material in the bucket 32 ​​onto the transfer conveyor 38. The transfer conveyor 38 then transports the material to the vehicle-mounted crushing mechanism 4 for secondary crushing. After the opening and closing drive hydraulic cylinder 364 retracts and closes the actuating frame 36, the actuating drive motor 33 is started, causing the two actuating frames 36 to move towards the center for the next material feeding.

[0034] The mounting frame 21 is equipped with a protective curtain 211 and a spray pipe 212. The spray pipe 212 is connected to the water tank 7 on the vehicle body 1 through a spray pump. The spray pump is electrically connected to the control terminal and plays the role of spraying to reduce dust.

[0035] Support lifting hydraulic cylinders 213 are provided on both sides of the middle part of the mounting frame 21. Support rollers 214 are connected to the telescopic ends of the support lifting hydraulic cylinders 213. The tail end of the mounting frame 21 is hinged to the vehicle body 1. The support lifting hydraulic cylinders 213 are electrically connected to the control terminal and play a supporting role. When not crushing, the support lifting hydraulic cylinders 213 extend to raise the on-site crushing mechanism 2 and the transfer mechanism 3.

[0036] The vehicle-mounted crushing mechanism 4 includes a main crusher 41. A feeding conveyor 42 is provided at the feeding end of the main crusher 41, and a discharge conveyor 43 is provided at the discharge end of the main crusher 41. A magnetic separator 44 is provided on the discharge conveyor 43 for sorting the crushed steel bars. The main crusher 41 is an impact crusher or a jaw crusher. In this embodiment, a jaw crusher is used. Depending on the actual requirements of the stone material, an impact crusher with uniform particle size can also be selected. The main crusher 41, the feeding conveyor 42, and the discharge conveyor 43 are all electrically connected to the control terminal.

[0037] The adjustable discharge mechanism 6 includes a discharge angle adjusting turntable 61, on which a telescopic conveyor 62 is mounted. Both the discharge angle adjusting turntable 61 and the telescopic conveyor 62 are electrically connected to the control terminal. Depending on the actual construction conditions, the crushed stones or sand are piled up on both sides of the road for easy recycling, eliminating the need for separate storage space.

[0038] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention and not to limit them. Although the present invention has been described in detail with reference to preferred embodiments, those skilled in the art should understand that modifications or equivalent substitutions can still be made to the technical solutions of the present invention, and these modifications or equivalent substitutions cannot cause the modified technical solutions to deviate from the spirit and scope of the technical solutions of the present invention.

Claims

1. A garbage crushing and recycling device for road and bridge construction, comprising a vehicle body, characterized in that: The vehicle body is equipped with an on-site crushing mechanism and a transfer mechanism at the forward end. The feed end of the transfer mechanism is opposite to the on-site crushing mechanism, and the discharge end of the transfer mechanism is opposite to the vehicle-mounted crushing mechanism on the vehicle body. The discharge end of the vehicle-mounted crushing mechanism is connected to the sand making machine on the vehicle body, and the discharge end of the sand making machine is equipped with an adjustable discharge mechanism. The on-site crushing mechanism includes a mounting frame, on which a detection unit, a cutting unit, a crushing unit, and a hammering unit are installed in sequence. The detection unit, cutting unit, crushing unit, and hammering unit are all electrically connected to the control terminal inside the vehicle body. The transfer mechanism, vehicle-mounted crushing mechanism, sand making machine, and adjustable discharge mechanism are all electrically connected to the control terminal inside the vehicle. The breaking unit includes a guide frame with a fixing groove on its inner side. A clamping plate is installed in the fixing groove, and both ends of the clamping plate are installed in the through holes of the guide frame. A first wedge is installed at one end of the clamping plate, and the first wedge and a second wedge are positioned opposite each other. The second wedge is connected to a connecting frame, which is connected to a top-tightening rack. The top-tightening rack meshes with a top-tightening gear, and the top-tightening gear meshes with a positioning rack. Both the positioning rack and the top-tightening rack are slidably mounted on the guide frame. A motor screw structure is installed on one side of the guide frame, and a movable seat is installed on the motor screw structure. An electromagnet is installed on the movable seat, and the electromagnet is positioned opposite to several breaking lifting hydraulic cylinders arranged in parallel in the guide frame. A fixing plate on the side of the breaking lifting hydraulic cylinder is installed in a fixing groove, and a pneumatic hammer is installed at the telescopic end of the breaking lifting hydraulic cylinder. A breaking angle adjustment drive motor is installed at one end of the guide frame, and the breaking angle adjustment drive motor is mounted on a mounting frame. The motor lead screw structure, the adsorption electromagnet, the hydraulic cylinder for breaking and lifting, the pneumatic pick, and the motor for breaking and adjusting angle are all electrically connected to the control terminal.

2. The garbage crushing and recycling device for road and bridge construction according to claim 1, characterized in that: The detection unit includes several transmission gears arranged in parallel on the mounting frame. Adjacent transmission gears mesh with each other. An extension arm is mounted on the transmission gear. A metal detector and an image acquisition device are mounted on the extension arm. One of the transmission gears is connected to the detection drive motor through a gear. The detection drive motor is mounted on the mounting frame. The image acquisition unit, metal detector, and detection drive motor are all electrically connected to the control terminal.

3. The garbage crushing and recycling device for road and bridge construction according to claim 2, characterized in that: The cutting unit includes an adjustable shaft and several mounting blocks arranged in parallel on the adjustable shaft. The sliders on the side of the mounting blocks are set in the spiral adjustable grooves opened on the circumference of the adjustable shaft. One end of the adjustable shaft is connected to a cutting adjustable drive motor, which is mounted on a mounting frame. The mounting blocks are slidably mounted on a guide shaft. A cutting lifting hydraulic cylinder is set at the bottom of the mounting blocks. A cutting angle adjustment drive motor is installed at the telescopic end of the cutting lifting hydraulic cylinder. The output shaft of the cutting angle adjustment drive motor is connected to a cutting machine. The cutting distance adjustment drive motor, the cutting lifting hydraulic cylinder, the cutting angle adjustment drive motor, and the cutting machine are all electrically connected to the control terminal.

4. The garbage crushing and recycling device for road and bridge construction according to claim 3, characterized in that: The hammering unit includes several hammering lifting hydraulic cylinders arranged in parallel on the mounting frame. The telescopic end of the hammering lifting hydraulic cylinder is provided with an inverted U-shaped mounting plate, and the two ends of the inverted U-shaped mounting plate are respectively connected to a shredding blade and a crushing plate. The hammer-lifting hydraulic cylinder is electrically connected to the control terminal.

5. The garbage crushing and recycling device for road and bridge construction according to claim 4, characterized in that: The transfer mechanism includes a transfer lifting hydraulic cylinder mounted on a mounting frame. The telescopic end of the transfer lifting hydraulic cylinder is connected to a bucket. An actuation unit is set on the mounting frame above the bucket. The actuation unit includes an actuation drive motor. The output shaft of the actuation drive motor is connected to an actuation gear. A actuation rack meshes on both sides of the actuation gear. The connecting block of the actuation rack passes through the through hole of the mounting frame and is connected to an actuation frame. The actuation frame includes a fixed plate, a passive plate, and an active plate. One end of the fixed plate is fixed to the connecting block. One end of the passive plate and the active plate are rotatably connected to the connecting block. One end of the active plate is connected to the opening and closing drive hydraulic cylinder. Several passive plates are provided and connected sequentially by flexible ropes. The first passive plate is connected to the fixed plate by a flexible rope, and the last passive plate is connected to the active plate by a flexible rope. The mounting frame is equipped with L-shaped baffles on both sides, and a transfer conveyor is installed inside the L-shaped baffles. The discharge end of the transfer conveyor is positioned opposite to the vehicle-mounted crushing mechanism. The transfer lifting hydraulic cylinder, the toggle drive motor, the opening and closing drive hydraulic cylinder, and the transfer conveyor are all electrically connected to the control terminal.

6. The garbage crushing and recycling device for road and bridge construction according to claim 5, characterized in that: The bottom of the L-shaped baffle plate has a telescopic groove, and a telescopic plate is connected to the telescopic groove by a spring. The other end of the active plate is connected to an arc-shaped baffle. A flexible protective net is detachably connected between the active plate and the fixed plate.

7. The garbage crushing and recycling device for road and bridge construction according to claim 6, characterized in that: The mounting frame is equipped with a protective curtain and a spray pipe, and the spray pipe is connected to the water tank on the vehicle body through a spray pump. The mounting frame is equipped with support lifting hydraulic cylinders on both sides of the middle section. The telescopic ends of the support lifting hydraulic cylinders are connected to support rollers. The tail end of the mounting frame is hinged to the vehicle body. The hydraulic cylinder supporting the lifting mechanism and the spray pump are electrically connected to the control terminal.

8. The garbage crushing and recycling device for road and bridge construction according to claim 7, characterized in that: The vehicle-mounted crushing mechanism includes a main crusher, a feeding conveyor at the feed end of the main crusher, a discharge conveyor at the discharge end of the main crusher, and a magnetic separator on the discharge conveyor. The main crusher is an impact crusher or a jaw crusher. The main crusher, feed conveyor, and discharge conveyor are all electrically connected to the control terminal.

9. The garbage crushing and recycling device for road and bridge construction according to claim 8, characterized in that: The adjustable discharge mechanism includes a discharge angle adjustment turntable, on which a telescopic conveyor is installed. Both the discharge angle adjustment turntable and the telescopic conveyor are electrically connected to the control terminal.

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