Crushing system for reinforced concrete long strip components

Abstract

The present invention discloses a crushing system for reinforced concrete long strip components, including a primary crushing system and a secondary crushing system, wherein the primary crushing system includes a crushing device, an armor conveying device, a first conveyor, a first magnetic separation device and a first discharging conveyor, and the secondary crushing system includes an impact crushing device, a second conveyor, a second magnetic separation device, a multi-stage vibrating screen, a return conveyor, a second discharging conveyor and a fine material conveyor. The present invention can finely and efficiently grade and crush reinforced concrete long strip components and classify and recycle crushed materials, such as railway waste sleepers or other building components, improve the safety, stability, reliability and service life of the equipment, have high efficiency, wide application range, reduce costs, and meet increasingly high production needs.

Description

Technical Field

[0001] The invention relates to reinforced concrete component crushing equipment, in particular to a crushing system for reinforced concrete long strip components. Background Art

[0002] With the continuous progress of society and the rapid development of urbanization, various construction facilities such as railways and bridges are increasing, and the corresponding old construction facilities are also being gradually demolished, which has generated a large number of abandoned reinforced concrete components. The main treatment method is to dump or bury them underground, which causes waste of resources, land occupation, environmental pollution, etc. With the continuous improvement of people's concepts and awareness of environmental protection and sustainable development, more and more attention is paid to the classification, recycling and reuse of abandoned reinforced concrete components. However, for long reinforced concrete components, such as waste railway sleepers or other building components, due to their high strength and the presence of steel bars, it is difficult for existing equipment to effectively crush, classify and recycle them. The equipment occupies a large space, is inconvenient to operate, has low efficiency and precision, and is easy to damage the equipment due to sharp steel bars. The equipment has large loss during use, low safety, stability and reliability, and high cost, which cannot meet the increasing production needs. Summary of the invention

[0003] The purpose of the present invention is to provide a crushing system for reinforced concrete long strip members, which can solve at least one of the above technical problems. The technical solution of the present invention is as follows:

[0004] A crushing system for reinforced concrete long strip components, including a primary crushing system and a secondary crushing system, the primary crushing system including a crushing device, an armored conveying device, a first conveyor, a first magnetic separation device and a first discharging conveyor, the secondary crushing system including a counter-crushing device, a second conveyor, a second magnetic separation device, a multi-stage vibrating screen, a return conveyor, a second discharging conveyor and a fine material conveyor, the reinforced concrete long strip components are crushed by the primary crushing device and fall on the armored conveying device for transportation, the armored conveying device can transport the materials to the first conveyor, the first magnetic separation device can remove the metal magnetic parts in the materials on the first conveyor, and the metal is removed The material after the magnetic parts can fall onto the first discharging conveyor from the discharging port of the first conveyor, the first discharging conveyor can convey the material into the impact crusher for secondary crushing, the material crushed by the impact crusher can fall onto the second conveyor for conveying, the second magnetic separation device can remove the metal magnetic parts in the material on the second conveyor, the material after removing the metal magnetic parts can fall onto the multi-stage vibrating screen from the discharging port of the second conveyor for vibration screening, the return conveyor, the fine material conveyor and the second discharging conveyor respectively convey the materials of different specifications screened by the multi-stage vibrating screen, the return conveyor can re-convey the material to the impact crusher for re-crushing.

[0005] In some embodiments, the primary crushing system is disposed on the first tracked frame, and the secondary crushing system is disposed on the second tracked frame.

[0006] In some embodiments, the multi-stage vibrating screen includes a screen box and a fifth driving mechanism. Multiple layers of sieve plates are arranged in the screen box from top to bottom. The sieve holes of the sieve plates decrease layer by layer from top to bottom. The discharge port of the top sieve plate corresponds to the return material conveyor through the first chute, and the discharge ports of the remaining sieve plates correspond to different fine material conveyors through the second chute. The second discharge conveyor is located below the screen box and corresponds to the bottom sieve plate.

[0007] In some embodiments, the screen box and the fifth driving mechanism are arranged on a first base, one end of the first base is hinged to the second crawler frame, and the first base is provided with a first dropping interval corresponding to the bottom screen plate, and the sixth driving mechanism can drive the first base to rotate up and down with the hinge between the first base and the second crawler frame as the center.

[0008] In some embodiments, the crushing device includes a lifting arm body, a lifting mechanism, a first supporting assembly, an angle adjustment assembly, a crushing bucket and a flexible material guiding dust cover. The top of the lifting arm body is connected to the crushing bucket through the angle adjustment assembly. The angle adjustment assembly can adjust the angle of the crushing bucket. The flexible material guiding dust cover is arranged at the outlet of the crushing bucket to guide the crushed material to the armored conveying equipment. The bottom of the lifting arm body is hinged to the crawler frame. The lifting mechanism can push the lifting arm body to rotate up and down to make the crushing bucket connected to the angle adjustment assembly rise and fall. The first supporting assembly can support the lifting arm body.

[0009] In some embodiments, the armor conveying equipment includes a first frame, on which a first driving shaft, a first driven shaft, a first driving mechanism for driving the first driving shaft, and a rotatable material guiding device located at the feed end are provided. Both ends of the first driving shaft are connected to both ends of the first driven shaft through a first chain transmission, and each relative section of the two first chains passes through a metal armor plate, and both ends of the metal armor plate are provided with a first rib, and all the metal armor plates are used in sequence to convey the crushed materials.

[0010] In some embodiments, the first magnetic separation device includes a first bracket and a first magnetic body and a first conveyor belt arranged on the first bracket. The first bracket is provided with a second driving shaft and a second driven shaft that cooperate with the first conveyor belt. The second driving shaft is driven by a second driving mechanism. The first magnetic body is fixed between the second driven shaft and the second driving shaft. The first magnetic body is located in the internal area formed by the first conveyor belt and cooperates with the lower conveying part of the first conveyor belt. The metal magnetic parts in the crushed material can be adsorbed on the lower conveying part of the first conveyor belt for transportation.

[0011] In some embodiments, the impact crusher includes a first casing, a plate hammer, an impact plate, a third driving mechanism, a feed chute and a rotatable return chute. The inlet of the rotatable return chute corresponds to the outlet of the return conveyor. The impact plate and the plate hammer are arranged in the first casing. The impact plate and the plate hammer correspond to each other. The outlet of the first discharging conveyor corresponds to the inlet of the feed chute. The rotatable return chute is located on one side of the feed chute and is hinged to the feed chute. The third driving mechanism drives the plate hammer to rotate to crush the material entering the plate hammer action area for the first time. The material is ejected onto the impact plate and can be crushed again. The material rebounded by the impact plate can fall back to the plate hammer action area for continued crushing.

[0012] In some embodiments, the fine material conveyor includes a second frame, on which a second conveyor belt for conveying materials, a seventh drive mechanism, an eighth drive mechanism, and an active roller and a driven roller cooperating with the second conveyor belt are provided. The second frame includes a feed section, a middle section, and a discharge section hinged in sequence. The seventh drive mechanism can drive the middle section to rotate up and down, and the eighth drive mechanism can drive the discharge section to rotate left and right.

[0013] In some embodiments, a buffer support assembly matched with the second conveyor belt is disposed on the second frame, and the buffer support assembly is located at the feeding end of the second conveyor belt to elastically support the second conveyor belt.

[0014] The beneficial effects of the present invention are as follows: through the primary crushing system and the secondary crushing system, reinforced concrete long strip components are graded and crushed and classified, such as railway waste sleepers or other building components, the armored conveying equipment has high strength, can reduce the damage and impact of sharp ferromagnetic materials such as sharp steel bars and large blocks of materials on the equipment, can ensure the stable transportation of materials, the first crawler frame and the second crawler frame are convenient for overall movement of the equipment, and the operation is convenient, the first magnetic separation device and the second magnetic separation device can remove the metal magnetic parts in the crushed material, facilitate the classification and processing of the crushed material, reduce damage to subsequent equipment, etc., the impact crusher has high crushing accuracy, and the multi-stage vibrating screen has high screening accuracy, so that the reinforced concrete long strip components can be finely and efficiently graded and crushed, and the crushed materials can be classified and recycled, thereby improving the safety, stability, reliability and service life of the equipment, etc., with high efficiency, wide application range, reduced cost, and able to meet increasingly high production needs.

[0015] In addition, in the technical solution of the present invention, unless otherwise specified, the technical solution can be implemented by adopting conventional means in the art. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] In order to more clearly illustrate the specific implementation methods of the present invention or the technical solutions in the prior art, the drawings required for use in the specific implementation methods or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are some implementation methods of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0017] Figure 1 The present invention is a schematic structural diagram of a crushing system for reinforced concrete long strip members according to an embodiment of the present invention.

[0018] Figure 2 It is a schematic structural diagram of a primary crushing system according to an embodiment of the present invention.

[0019] Figure 3 It is a schematic structural diagram of a secondary crushing system according to an embodiment of the present invention.

[0020] Figure 4 It is a schematic structural diagram of a crushing device according to an embodiment of the present invention.

[0021] Figure 5 It is a schematic structural diagram of an armor conveying device according to an embodiment of the present invention.

[0022] Figure 6 This is a schematic structural diagram of an armor conveying device according to an embodiment of the present invention, with the rotatable material guiding device removed.

[0023] Figure 7 It is a schematic structural diagram of a three-part material chute assembly according to an embodiment of the present invention.

[0024] Figure 8 It is a schematic structural diagram of a first magnetic separation device according to an embodiment of the present invention.

[0025] Fig. 9 The figure is a schematic structural diagram of an impact crusher according to an embodiment of the present invention.

[0026] Fig.10 The figure is a schematic structural diagram of an impact crusher according to an embodiment of the present invention.

[0027] Fig.11 It is a schematic structural diagram of a multi-stage vibrating screen according to an embodiment of the present invention.

[0028] Fig.12 It is a schematic structural diagram of a fine material conveyor according to an embodiment of the present invention.

[0029] Fig.13 It is a schematic structural diagram of a fine material conveyor according to an embodiment of the present invention.

[0030] Fig.14 It is a schematic diagram of the partial structure of a fine material conveyor according to an embodiment of the present invention.

[0031] Fig.15 It is a schematic structural diagram of a buffer support assembly according to an embodiment of the present invention.

[0032] Fig.16 It is a schematic structural diagram of a roller assembly according to an embodiment of the present invention.

[0033] Description of the reference numerals in the accompanying drawings: primary crushing system 1, first crawler frame 11, crawler mechanism 111, hydraulic lifting legs 112, crushing device 12, lifting arm body 121, lifting mechanism 122, first support assembly 123, first support rod 1231, first extension rod 1232, angle adjustment assembly 124, crushing bucket 125, flexible material guide dust cover 126, armored conveying device 13, first frame 131, first driving shaft 132, first driven shaft 133, first driving mechanism 134, rotatable dynamic material guide device 135, first chain 136, metal armor plate 138, first rib 1381, first conveyor 14, three-part material chute assembly 15, third chute 151, fourth chute 152, fifth chute 153, first magnetic separation device 16, first bracket 161, first magnetic body 162, second driving shaft 163, second driven shaft 164, second driving mechanism 165, first conveyor belt 166, first discharging conveyor 17, secondary crushing system 2, second crawler frame 21, impact crushing device 22, first housing 221, plate hammer 222, impact plate 223, third drive mechanism 224, feed chute 225, rotatable return chute 226, fourth drive mechanism 227, second conveyor 23, second magnetic separation device 24, multi-stage vibrating screen 25, first base 251, screen box 252, screen plate 2521, vibrator 2522, fifth drive mechanism 253, elastic support seat 254, sixth drive mechanism 256, first chute 257, second chute 258, return conveyor 26, second Discharge conveyor 27, fine material conveyor 28, second frame 281, first pressure roller 2811, feed section 2814, middle section 2815, discharge section 2816, telescopic support assembly 2817, second conveyor belt 282, inverted trapezoidal groove 2821, active roller 283, driven roller 284, eighth driving mechanism 285, buffer support assembly 286, buffer roller 2861, third bracket 2862, roller assembly 287, first roller 2871, second bracket 2872, seventh driving mechanism 288. DETAILED DESCRIPTION

[0034] In order to make the purpose, technical scheme and advantages of the present invention clearer, the present invention is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are part of the embodiments of the present invention, rather than all of the embodiments, and are only used to explain the present invention, and are not used to limit the present invention. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the present invention.

[0035] In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "front", "back", "vertical", "horizontal", "inner", "outer", "two ends", "both sides", "bottom", "top" and the like indicate positions or positional relationships based on the positions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the referred elements must have a specific orientation or be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the present invention. In addition, the terms "first", "second", "superior", "inferior", "primary", "secondary" and the like are only used for descriptive purposes and can be simply used to more clearly distinguish different components, but cannot be understood as indicating or implying relative importance.

[0036] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, an integral connection, a mechanical connection, an electrical connection, a direct connection, an indirect connection through an intermediate medium, or the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0037] See also Figure 1~ schematically shows a crushing system for reinforced concrete long strip components according to the present invention, including a primary crushing system 1 and a secondary crushing system 2. The primary crushing system 1 is arranged on a first crawler frame 11, and the secondary crushing system 2 is arranged on a second crawler frame 21, so as to facilitate the overall movement of the equipment. The primary crushing system 1 includes a crushing device 12, an armor conveying device 13, a first conveyor 14, a first magnetic separation device 16 and a first discharging conveyor 17. The armor conveying device 13, the first conveyor 14 and the first discharging conveyor 17 are arranged in sequence. The first magnetic separation device 16 is located above the first conveyor 14, and the discharging port of the first magnetic separation device 16 corresponds to the armor conveying device 13. The secondary crushing system 2 includes an impact crusher, a second conveyor 23, a second magnetic separation device 24, a multi-stage vibrating screen 25, a return conveyor 26, a second discharging conveyor 27 and a fine material conveyor 28. The impact crusher, the second conveyor 23 and the multi-stage vibrating screen 25 are arranged in sequence, the outlet of the impact crusher corresponds to the feed end of the second conveyor 23, the outlet of the second conveyor 23 corresponds to the inlet of the multi-stage vibrating screen 25, the second magnetic separation device 24 is located above the second conveyor 23 and usually close to the discharging end of the second conveyor 23, the return conveyor 26, the second discharging conveyor 27 and the fine material conveyor 28 correspond to the discharging ports of each level of the multi-stage vibrating screen 25, and the outlet of the first discharging conveyor 17 corresponds to the inlet of the impact crusher.

[0038] The reinforced concrete strip components enter the crushing device 12 for primary coarse crushing, such as waste railway sleepers or other building components, and the crushed materials fall on the armored conveying device 13 for transportation. The armored conveying device 13 can convey the materials to the first conveyor 14. The first magnetic separation device 16 can remove the metal magnetic parts in the materials on the first conveyor 14. The materials after removing the metal magnetic parts can fall from the discharge port of the first conveyor 14 to the first discharge conveyor 17. The first discharge conveyor 17 can convey the materials into the impact crusher for secondary crushing. The materials crushed by the impact crusher can fall on the second The materials are transported on the conveyor 23, the second magnetic separation device 24 can remove the metal magnetic parts in the materials on the second conveyor 23, and the materials after the metal magnetic parts are removed can fall from the discharge port of the second conveyor 23 into the multi-stage vibrating screen 25 for vibration screening, the return conveyor 26, the fine material conveyor 28 and the second discharge conveyor 27 respectively convey the materials of different specifications screened by the multi-stage vibrating screen 25, and the return conveyor 26 can transport the materials back to the impact crusher for re-crushing, so that the reinforced concrete long strip components are graded and crushed and classified through the primary crushing system 1 and the secondary crushing system 2.

[0039] The structures of the first crawler frame 11 and the second crawler frame 21 are basically the same. Crawler mechanisms 111 for walking and moving are respectively arranged on both sides of the first crawler frame 11. The crawler mechanisms 111 are common mechanisms in the prior art. The crawler mechanisms 111 can adopt high-strength metal crawlers, etc. The crawler mechanisms 111 are driven by power devices such as motors, so that the first crawler frame 11 can move as a whole. Hydraulic lifting legs 112 are respectively arranged at the four end corners of the first crawler frame 11. According to the actual situation, the number and arrangement of the hydraulic lifting legs 112 can also be appropriately adjusted. The hydraulic lifting legs 112 have great power, which is convenient for lifting and leveling the equipment as a whole, and are particularly suitable for lifting and leveling heavy equipment. Electric control cabinets, hydraulic stations, etc. are also arranged on the first crawler frame 11 and the second crawler frame 21.

[0040] The crushing device 12 includes a lifting arm body 121, a lifting mechanism 122, a first supporting assembly 123, an angle adjustment assembly 124, a crushing bucket 125 and a flexible material guiding dust cover 126. The angle adjustment assembly 124 is arranged on the top of the lifting arm body 121, and the angle adjustment assembly 124 is connected to the crushing bucket 125. The bottom of the lifting arm body 121 is hinged to the first crawler frame 11. The flexible material guiding dust cover 126 is connected to the outlet of the crushing bucket 125. The outlet of the flexible material guiding dust cover 126 corresponds to the armor conveying equipment 13. The lifting mechanism 122 and the first supporting assembly 123 are respectively matched with the lifting arm body 121.

[0041] The angle adjustment assembly 124 can adjust the angle of the crushing bucket 125, making it easier for the crushing bucket 125 to crush and discharge materials. Long reinforced concrete components such as waste railway sleepers enter the crushing bucket 125 for crushing, and the crushed materials are guided from the outlet of the crushing bucket 125 along the flexible material guide dust cover 126 to be transported to the armored conveying device 13. The flexible material guide dust cover 126 can be a flexible plastic cover or a flexible rubber cover with embedded steel wire, which has high strength, wear resistance, durability, and is easy to fold and shrink. It can stably guide materials, prevent dust, reduce damage to subsequent conveying equipment matched with it, and is safer and more environmentally friendly. According to specific needs, the lifting mechanism 122 pushes the lifting arm body 121 to rotate up and down with the hinge between the lifting arm body 121 and the crawler frame as the center, so that the crushing bucket 125 is raised and lowered, for example, the crushing bucket 125 is raised when working and lowered when idle or not working. At the same time, the first support assembly 123 can support the lifting arm body 121 and reduce the load and damage to the lifting mechanism 122. The lifting mechanism 122 and the first support assembly 123 can also adjust the height position of the crushing bucket 125.

[0042] The lifting mechanism 122 can adopt an oil cylinder, an air cylinder, an electric cylinder, a hydraulic cylinder, etc. For example, a hydraulic cylinder is adopted. The output end of the hydraulic cylinder is hinged to the lifting arm body 121, and the other end of the hydraulic cylinder is hinged to the first crawler frame 11. The output end of the hydraulic cylinder can be provided with a Y-type joint, an I-joint, a fisheye joint or other connectors, and the other end of the hydraulic cylinder can be provided with an ear seat, such as a single ear seat or a double ear seat. Corresponding ear seats are provided on the lifting arm body 121 and the first crawler frame 11, and the ear seat is hinged to the connector or the ear seat through a pin shaft. The hydraulic cylinder has the advantages of simple structure, reliable operation, no reduction device, no transmission gap, smooth movement, large power, and strong bearing capacity.

[0043] The crushing bucket 125 usually includes a casing, a first crushing knife and a driving mechanism such as a motor and a hydraulic motor for driving the first crushing knife to rotate. The flexible material guiding dust cover 126 is connected to the outlet of the casing. For example, the inlet of the flexible material guiding dust cover 126 is fixed to the outlet of the casing by fasteners such as screws. The first crushing knife is arranged in the casing. The first crushing knife can be one, two or more. The number and arrangement of the first crushing knives depend on the specific situation. Usually, multiple first crushing knives are installed on a rotating shaft. The driving mechanism drives the rotating shaft to rotate, so that the first crushing knife rotates to crush long reinforced concrete components such as waste railway sleepers.

[0044] The angle adjustment component 124 can adopt a driving mechanism such as an oil cylinder, an air cylinder, an electric cylinder, a hydraulic cylinder, etc. One end of the driving mechanism is hinged to the crushing bucket 125 and the other end is hinged to the lifting arm body 121. Referring to the above-mentioned lifting mechanism 122, the driving mechanism drives the crushing bucket 125 to rotate, so that the angle of the crushing bucket 125 can be adjusted, which is more convenient for the crushing and discharging of the crushing bucket 125.

[0045] The first support assembly 123 includes a first support rod 1231 and a first extension rod 1232. The bottom of the first support rod 1231 is hinged to the first crawler frame 11, and the top of the first extension rod 1232 is hinged to the lifting arm body 121, for example, by a pin hinge, the first support rod 1231 and the first extension rod 1232 are slidably connected, the first extension rod 1232 can be extended and retracted by sliding relative to the first support rod 1231, and the first support rod 1231 and the first extension rod 1232 can be locked by locking members such as screws and pins, and the lifting mechanism 122 is parallel to the first support rod 1231 and the first extension rod 1232. The first support rod 1231 is provided with a slideway that cooperates with the first extending rod 1232, and the first support rod 1231 is provided with a first connecting hole that cooperates with the locking piece. The first extending rod 1232 is provided with a plurality of second connecting holes that cooperate with the first connecting hole in sequence along its length direction. The number and spacing of the second connecting holes are determined according to specific circumstances. The first extending rod 1232 slides along the slideway on the first support rod 1231. When the first connecting hole corresponds to the second connecting hole at the corresponding position, locking pieces such as screws and pins pass through the first connecting hole and the second connecting hole to lock the first support rod 1231 with the first extending rod 1232.

[0046] The armor conveying equipment 13 includes a first frame 131, on which a first driving shaft 132, a first driven shaft 133, a first driving mechanism 134 for driving the first driving shaft 132, and a rotatable material guiding device 135 are provided. The first driving mechanism 134 can be an electric motor, etc. The first driving shaft 135 is located at one end of the first frame 131, and the first driven shaft 133 is located at the other end of the first frame 131. The two ends of the first driving shaft 132 and the two ends of the first driven shaft 133 are respectively connected by a first chain 136. The first driving shaft 132 and the first driven shaft 133 are respectively provided with sprockets matching the first chain 136. Each relative section of the two first chains 136 passes through a metal armor plate 138, and first ribs 1381 are provided at both ends of the metal armor plate 138. All the metal armor plates 138 cooperate in sequence to form a structure similar to a conveyor belt. All the metal armor plates 138 cooperate in sequence to stably convey the crushed materials. The metal armor plates 138 have high strength, such as steel plates, which can reduce the damage and impact of sharp ferromagnetic materials such as steel bars and large pieces of materials on the equipment, and have high safety and reliability.

[0047] The rotatable material guide device 135 usually includes a first material guide plate located at the feed end and side material guide plates respectively matched with both sides of the first material guide plate. The first material guide plate is located at the end of the feed end of the armor conveying device 13, and the two side material guide plates are respectively located on both sides of the conveying direction of the armor conveying device 13. The first material guide plate and the two side material guide plates enclose a feed interval. The first material guide plate and the two side material guide plates are usually arranged to be tilted outward, that is, the size of the feed interval gradually decreases from top to bottom, which is convenient for better material guiding. The first material guide plate is detachably connected to the two side material guide plates through locking members such as latches, and each side material guide plate can be detachably connected to the first material guide plate through one or more locking members such as latches. The lower end of the first material guide plate and the lower ends of the two side material guide plates are respectively hinged to the first frame 131, and the first material guide plate and the two side material guide plates can be rotated outward to open respectively. The first frame 131 is provided with a support, etc., which are respectively hinged to the first material guide plate and the first bracket.

[0048] The structures of the first magnetic separation device 16 and the second magnetic separation device 24 are basically the same. The first magnetic separation device 16 includes a first bracket 161, a first magnetic body 162 and a first conveyor belt arranged on the first bracket 161, a second driving shaft 163 matched with the first conveyor belt 166 is arranged at one end of the first bracket 161, and a second driven shaft 164 matched with the first conveyor belt 166 is arranged at the other end of the first bracket 161, the second driving shaft 163 is driven by a second driving mechanism 165, the first magnetic body 162 is fixed between the second driven shaft 164 and the second driving shaft 163, the first magnetic body 162 is located in the internal area formed by the first conveyor belt 166 and matched with the lower conveying part of the first conveyor belt 166, and the metal magnetic parts in the crushed material can be adsorbed on the lower conveying part of the first conveyor belt 166 for conveying. The first magnetic body 162 can be a magnet, an electromagnet, a magnetic steel or other suitable permanent magnet, the first conveyor belt 166 can be made of engineering plastics with high strength and good toughness, the second driving mechanism 165 can be a reduction motor, a motor, a hydraulic motor or other suitable power mechanism in the prior art, and the third driving mechanism 165 can directly drive the second driving shaft 163 to rotate, or drive the second driving shaft 163 to rotate through a gear mechanism, a synchronous belt mechanism, etc.

[0049] The first crawler frame 11 is also provided with a three-part material chute assembly 15 respectively matched with the first conveyor 14, the first magnetic separation device 16 and the first discharge conveyor 17. The first magnetic separation device 16 is located above the discharge end of the first conveyor 14, and the three-part material chute assembly 15 is located at the discharge port of the first conveyor 14. The three-part material chute assembly 15 includes a third chute 151 and a fourth chute 152. The third chute 151 is matched with the discharge port of the first conveyor 14, the fourth chute 152 is matched with the discharge port of the first magnetic separation device 16, and the outlet of the first chute is matched with the first discharge conveyor 17. Usually, the outlet of the third chute 151 is located above the feed port of the first discharge conveyor 17, and the fourth chute 152 is provided with a fifth chute 153. The crushed materials are conveyed along the first conveyor 14. The first magnetic separation device 16 first absorbs the metal magnetic parts in the materials conveyed by the first conveyor 14 and outputs them through the fourth chute 152. The materials after removing the metal magnetic parts fall from the discharge port of the first conveyor 14 through the third chute 151 to the first discharge conveyor 17 for conveyance and discharge. The long strips of steel bar crushed materials directly slide along the fourth chute 152, and the small steel bar crushed materials slide along the fifth chute 153. The long strips of steel bar crushed materials and the small steel bar crushed materials are then collected and processed by corresponding devices respectively, so that the crushed materials can be classified and output.

[0050] The impact crusher device includes a first housing 221, a plate hammer 222, an impact plate 223, a third driving mechanism 224, a feed chute 225 and a rotatable return chute 226. The impact plate 223 and the plate hammer 222 are arranged in the first housing 221. The impact plate 223 and the plate hammer 222 are matched with each other. The feed chute 225 is connected to the inlet of the first housing 221. The outlet of the rotatable return chute 226 is connected to the feed chute 225. The inlet of the rotatable return chute 226 is matched with the outlet of the return conveyor 26. The return conveyor 226 is connected to the feed chute 225. The larger materials screened by the multi-stage vibrating screen 25 are fed back into the first housing 221 for secondary crushing through the rotatable return chute 226. The rotatable return chute 226 is located on one side of the feed chute 225 and is hinged to the feed chute 225. The rotatable return chute 226 can rotate up and down with the hinge between the rotatable return chute 226 and the feed chute 225 as the center, so that the rotatable return chute 226 can be stored on the first housing 221 or opened relative to the first housing 221, reducing the occupied space and facilitating transportation. Usually, the outlet of the first housing 221 is set at the bottom and is located below the impact plate 223 and the plate hammer 222, and the feed end of the second conveyor 23 corresponds to the outlet at the bottom of the first housing 221. In addition, the structure of the impact plate 223 and the plate hammer 222 is basically the same as that in the prior art, and will not be described in detail.

[0051] The third driving mechanism 224 can be driven by a stepping motor, a reduction motor, a servo motor, a hydraulic motor or other suitable power mechanisms in the prior art. The third driving mechanism 224 can directly drive the plate hammer 222 to rotate, or drive the plate hammer 222 to rotate through a belt transmission mechanism, a gear mechanism, etc.

[0052] The reinforced concrete components are firstly subjected to primary coarse crushing and classification by the primary crushing system 1, and then the first discharging conveyor 17 feeds the materials into the first casing 221 of the impact crusher through the feed chute 225 for secondary fine crushing. The third driving mechanism 224 drives the plate hammer 222 to rotate, and the plate hammer 222 performs the first crushing on the materials entering its action area. The materials are ejected onto the impact plate 223 and can be crushed again. The materials rebounded by the impact plate 223 can fall into the action area of ​​the plate hammer 222 and continue to be crushed. This process is repeated until the materials are crushed to a size smaller than the discharge port size, and then discharged from the outlet below the impact plate 223 and the plate hammer 222 to the second conveyor 23.

[0053] A fourth drive mechanism 227 is disposed outside the first housing 221. The fourth drive mechanism 227 can drive the rotatable return material chute 226 to rotate around the hinge of the rotatable return material chute 226 and the feed chute 225, so that the rotatable return material chute 226 can be stored on the first housing 221 or opened relative to the first housing 221, reducing the occupied space, facilitating transportation, and making the operation more convenient. The fourth drive mechanism 227 can be an oil cylinder, an air cylinder, an electric cylinder, a hydraulic cylinder, etc. For example, a hydraulic cylinder is used. The hydraulic cylinder has the advantages of simple structure, reliable operation, no reduction device, no transmission gap, stable movement, large power, and strong bearing capacity.

[0054] The multi-stage vibrating screen 25 includes a screen box 252 and a fifth driving mechanism 253. A vibrator 2522 is provided on the screen box 252. The fifth driving mechanism 253 drives the vibrator 2522 to move. The vibrator 2522 is a common mechanism in the prior art, such as a cylindrical eccentric shaft vibrator. The fifth driving mechanism 253 drives the cylindrical eccentric shaft vibrator to rotate, generating a centrifugal inertial force to vibrate the screen box 252 to screen the material. Multiple layers of screen plates 2521 are arranged in sequence from top to bottom in the screen box 252. The number of layers of the screen plates 2521 is determined according to the specific situation. The screen holes of the screen plates 2521 decrease layer by layer from top to bottom. A discharge port is provided at one end of each layer of the screen plates 2521, that is, the material screened decreases from top to bottom, and the material passing through the bottom layer of the screen plates 2521 is the smallest and finest. The outlet of the second conveyor 23 is located above the top sieve plate 2521. The discharge port of the top sieve plate 2521 corresponds to the return conveyor 26 through the first chute 257. The discharge ports of the remaining sieve plates 2521 correspond one-to-one with different fine material conveyors 28 through the second chute 258. The number of fine material conveyors 28 is determined according to the number of screening stages of the multi-stage vibrating screen 25. The second discharge conveyor 27 is located below the screen box 252 and corresponds to the bottom sieve plate 2521.

[0055] The screen box 252 and the fifth driving mechanism 253 are arranged on the first base 251. The first base 251 is provided with a leg connected to the second discharging conveyor 27 and a supporting rod connected to the second conveyor 23. One end of the first base 251 is hinged to the second crawler frame 21. The first base 251 is provided with a material dropping area corresponding to the bottom screen plate 2521. The sixth driving mechanism 256 can drive the first base 251 to rotate up and down with the hinge of the first base 251 and the first crawler frame 11 as the center, so as to adjust the inclination angle of the first base 251 and the screen box 252 and better support the first base 251 and the screen box 252. The sixth driving mechanism 256 can be an oil cylinder, an air cylinder, an electric cylinder, a hydraulic cylinder, a linear module, etc. The hydraulic cylinder has the advantages of simple structure, reliable operation, no reduction device, no transmission gap, stable movement, large power, and strong bearing capacity. With reference to the above-mentioned first support assembly 123 , a support assembly cooperating with the sixth driving mechanism 256 may also be provided.

[0056] The fifth driving mechanism 253 is a motor, and a support matched with the motor is provided on the first base 251. The motor drives the vibrator to move, for example, the motor drives the cylindrical eccentric shaft vibrator to rotate through a belt, and generates centrifugal inertial force to vibrate the screen box 252. Of course, the fifth driving mechanism 253 can also adopt other suitable power mechanisms in the prior art.

[0057] Elastic support seats 254 are symmetrically arranged on both sides of the screen box 252. The elastic support seats 254 on both sides of the screen box can be one, two or more. The elastic support seats 254 stably and elastically support the screen box 252, so that the screen box 252 can better vibrate the screen material, and the force is more uniform, more stable and reliable. The elastic support seat 252 usually includes a support fixed on the first base 251 and a connecting seat connected to the screen box 252. A connecting shaft connected to the connecting seat is arranged on the screen box 252. The connecting seat and the connecting shaft can be fixedly connected by a jacket, a hoop, etc. The support and the connecting seat are connected by a spring. The number and arrangement of the springs depend on the specific situation. The upper end of the spring is connected to the connecting seat and the lower end is connected to the support, such as welding connection.

[0058] A pedestrian board and a protective fence are also provided on the first base 251. The pedestrian board and the protective fence are located outside the screen box 252. Operators walk on the pedestrian board, which is convenient for operators to adjust and maintain the equipment. The protective fence improves the safety of the equipment. A ladder is also provided at the opening of the protective fence, which makes operation more convenient.

[0059] The fine material conveyor 28 includes a second frame 281, on which are provided a second conveyor belt 282 for conveying materials, a seventh driving mechanism 288, an eighth driving mechanism 285, and an active roller 283 and a driven roller 284 cooperating with the second conveyor belt 282. The active roller 283 is located at one end of the second frame 281 and the driven roller 284 is located at the other end of the second frame 281. The active roller 283 is driven by a servo motor, a stepper motor, a hydraulic motor or other suitable power mechanism. The upper conveying part of the second conveyor belt 282 conveys materials, and the lower conveying part of the second conveyor belt 282 bypasses from under the second frame 281.

[0060] The second frame 281 includes a feed section 2814, a middle section 2815 and a discharge section 2816 which are hinged in sequence. The feed section 2814 and the middle section 2815 are hinged at one end close to each other, and the middle section 2815 and the discharge section 2816 are hinged at one end close to each other, for example, by using matching ear seats and pin shafts for hinge connection. The seventh driving mechanism 288 can drive the middle section 2815 to rotate up and down with the hinge between the middle section 2815 and the feed section 2814 as the center, and the eighth driving mechanism 285 can drive the discharge section 2816 to rotate left and right with the hinge between the discharge section 2816 and the middle section 2815 as the center, so that the fine material conveyor 28 can be folded and scaled on the second crawler frame 21 and unfolded outward relative to the second crawler frame 21, such as unfolding outward when in use and folding and scaling when not in use, which is convenient for moving, transporting and storing the equipment in an idle state, etc., and can reduce accidental collision and damage of the equipment. It has a compact and stable structure, occupies little space, and has high safety and reliability.

[0061] The seventh drive mechanism 288 and the eighth drive mechanism 285 can be oil cylinders, air cylinders, electric cylinders, hydraulic cylinders, linear modules, etc. The seventh drive mechanism 288 and the eighth drive mechanism 285 are both hydraulic cylinders. Referring to the above-mentioned articulated structure, the hydraulic cylinder has the advantages of simple structure, reliable operation, no reduction device, no transmission gap, stable movement, high power, and strong bearing capacity.

[0062] The second frame 281 is provided with a telescopic support assembly 2817 that cooperates with the seventh drive mechanism 288. Referring to the first support assembly 123, the telescopic support assembly 2817 is substantially the same as the first support assembly 123. There are two seventh drive mechanisms 288, which are symmetrically located on both sides of the feed section 2814 and the middle section 2815. The two seventh drive mechanisms 288 synchronously drive the middle section 2815 to rotate up and down with the hinge between the middle section 2815 and the feed section 2814 as the center, so that the force is more uniform, more stable and reliable.

[0063] The second frame 281 is provided with a buffer support assembly 286 that matches the second conveyor belt. The buffer support assembly 286 is located at the feeding end of the second conveyor belt 282. The buffer support assembly 286 can elastically support the second conveyor belt 282. Usually, the buffer support assembly 286 is located above the second frame 281 and below the upper conveying portion of the second conveyor belt 282. The upper conveying portion of the second conveyor belt 282 conveys materials, and the lower conveying portion of the second conveyor belt 282 bypasses from below the second frame 281. During use, when materials fall on the feeding end of the second conveyor belt 282, the buffer support assembly 286 can buffer and support the second conveyor belt 282, reducing the impact and damage of the materials on the second conveyor belt 282 and the equipment.

[0064] The buffer support assembly includes a plurality of groups of buffer rollers sequentially arranged along the conveying direction of the second conveyor belt. The buffer rollers may be one group, two groups or more groups. The number and arrangement of the buffer rollers are determined according to the specific situation. The upper conveying part of the second conveyor belt is used for material conveying, and the lower conveying part of the second conveyor belt is bypassed from the bottom of the second frame 281. Each group of buffer rollers is located above the second frame 281 and below the second conveyor belt. Each group of buffer rollers may have one, two or more buffer rollers. The number and arrangement of the buffer rollers in each group of buffer rollers are determined according to the specific situation. The structure is simple and stable, and can better provide buffer support for the second conveyor belt, reduce the impact and damage of the material on the second conveyor belt and the equipment, and ensure better material conveying. The buffer rollers may be made of rubber, silicone, polyurethane or other elastic materials with suitable performance in the prior art.

[0065] A plurality of roller assemblies 287 cooperating with the second conveyor belt 282 are sequentially arranged on the second frame 281 along the conveying direction of the second conveyor belt 282. The roller assemblies 287 may be one, two or more. The number and arrangement of the roller assemblies 287 depend on the specific situation. The upper conveying part of the second conveyor belt 282 is used for material conveying, and the lower conveying part of the second conveyor belt 282 bypasses from the bottom of the second frame 281. The roller assemblies 287 are located above the second frame 281 and below the second conveyor belt 282. The structure is more stable, which can ensure more stable and reliable material transportation.

[0066] The roller assembly 287 includes a second bracket 2872, on which three first rollers 2871 are arranged. The first rollers 2871 can be steel rollers, plastic rollers, elastic rollers, etc. Each group of buffer rollers 2861 can also be three and are arranged on the third bracket 2862. The second bracket 2872 and the third bracket 2862 are installed on the second frame 281. The three first rollers 2871 cooperate with each other and the three buffer rollers 2861 in each group cooperate with each other to form an inverted trapezoidal structure. The roller assembly 287 of the inverted trapezoidal structure and each group of buffer rollers 2861 limit the upper conveying part of the second conveyor belt 282, so that an inverted trapezoidal groove 2821 for conveying materials is formed on the second conveyor belt 282, that is, the upper conveying part of the second conveyor belt 282 is an inverted trapezoidal structure, and the material falls into the inverted trapezoidal groove 2821 of the second conveyor belt 282 for conveying, which can prevent the material from running out, etc., and is more stable and reliable. Typically, the inverted trapezoidal grooves 2821 of the feed port and the discharge port of the second conveyor belt 282 are relatively large, which facilitates feeding and discharging.

[0067] The buffer roller 2861 and the first roller 2871 can rotate freely. The second bracket 2872 is provided with a pin shaft or a rotating shaft that is rotatably connected to the first roller 2871. The third bracket 2862 is provided with a pin shaft or a rotating shaft that is rotatably connected to the buffer roller 2861, so as to better support the second conveyor belt 282.

[0068] The first pressure rollers 2811 are arranged on the second frame 281 in sequence along the conveying direction of the second conveyor belt 282. The first pressure rollers 2811 can be one, two or more. The number and arrangement of the first pressure rollers 2811 depend on the specific situation. The upper conveying part of the second conveyor belt 282 is used for material conveying, and the lower conveying part of the second conveyor belt 282 bypasses from the bottom of the second frame 281. The first pressure roller 2811 is located below the second frame 281 and the second conveyor belt 282. The first pressure roller 2811 is arranged on a bracket, and the bracket is installed on the second frame 281. Both ends of the first pressure roller 2811 are connected to the bracket by screws, pins or rotating shafts, and the first pressure roller 2811 can also rotate, so as to ensure better transmission of the second conveyor belt 282. The bracket can also perform side blocking and limiting on both sides of the second conveyor belt 282.

[0069] The second frame 281 is provided with adjustment seats respectively cooperating with the two ends of the driven roller 284. The adjustment seats are moved along the slide groove or the slide rail and locked by screws, so as to adjust the distance between the active roller 283 and the driven roller 284, thereby facilitating the tensioning of the second conveyor belt 282.

[0070] The structures of the first conveyor 14, the second conveyor 23, the return conveyor 26, the first discharging conveyor 17 and the second discharging conveyor 27 are substantially the same as those of the fine material conveyor 28, and reference may be made to the structure of the above-mentioned fine material conveyor 28. The first conveyor 14, the second conveyor 23, the return conveyor 26, the first discharging conveyor 17 and the second discharging conveyor 27 may be folded in two sections or three sections, and the folding angle may be determined according to the specific situation, such as 30°, 45°, 90° or 180°, etc.

[0071] Compared with the prior art, the advantages of the present invention are as follows: the first-level crushing system 1 and the second-level crushing system 2 are used to grade and classify reinforced concrete long strip components, such as railway waste sleepers or other building components; the armored conveying equipment 13 has high strength, which can reduce the damage and impact of sharp ferromagnetic materials such as steel bars and large blocks of materials on the equipment, and can ensure the stable transportation of materials; the first crawler frame 11 and the second crawler frame 21 are convenient for moving the equipment as a whole; the first magnetic separation device 16 and the second magnetic separation device 24 can remove metal magnetic parts in the crushed material, which is convenient for the classification and processing of the crushed material and reduces the damage to subsequent equipment; the impact crusher has high crushing accuracy and the multi-stage vibrating screen 25 has high screening accuracy, so that the reinforced concrete long strip components can be finely and efficiently graded and crushed, and the crushed materials can be classified and recycled; the operation is convenient, the structure is compact and stable, the volume is small, the safety, stability, reliability and service life of the equipment are improved, the efficiency is high, the application range is wide, the cost is reduced, and it can meet the increasingly high production needs.

[0072] The above are only some embodiments of the present invention, which are only used to illustrate the technical solution of the present invention, rather than to limit it. It should be understood that, for those skilled in the art, without departing from the creative concept of the present invention, it is possible to make improvements or substitutions according to the above description, and all these improvements and substitutions should belong to the protection scope of the appended claims of the present invention. In this case, all details can be replaced by equivalent elements, and the materials, shapes and sizes can also be arbitrary.

Claims

1. Crushing system for reinforced concrete long strip components, characterized in that: The invention comprises a primary crushing system (1) and a secondary crushing system (2), wherein the primary crushing system (1) comprises a crushing device (12), an armored conveying device (13), a first conveyor (14), a first magnetic separation device (16) and a first discharging conveyor (17), and the secondary crushing system (2) comprises an impact crushing device (22), a second conveyor (23), a second magnetic separation device (24), a multi-stage vibrating screen (25), a return material conveyor (26), a second discharging conveyor (27) and a fine material conveyor (28). After primary crushing by the crushing device (12), the reinforced concrete long strip component falls onto the armored conveying device (13) for transportation. The armored conveying device (13) can transport the material to the first conveyor (14). The first magnetic separation device (16) can remove metal magnetic parts from the material on the first conveyor (14). After the metal magnetic parts are removed, the material can be The first discharge conveyor (17) can be used to transport materials from the discharge port of the first conveyor (14) to the first discharge conveyor (17), the first discharge conveyor (17) can transport materials to the impact crusher (22) for secondary crushing, the materials crushed by the impact crusher (22) can be transported to the second conveyor (23), the second magnetic separation device (24) can remove metal magnetic parts from the materials on the second conveyor (23), the materials after the metal magnetic parts are removed can be transported from the discharge port of the second conveyor (23) to the multi-stage vibrating screen (25) for vibration screening, the return conveyor (26), the fine material conveyor (28) and the second discharge conveyor (27) can respectively transport materials of different specifications screened by the multi-stage vibrating screen (25), and the return conveyor (26) can transport materials back to the impact crusher (22) for re-crushing; The primary crushing system (1) is arranged on a first crawler frame (11), and the secondary crushing system (2) is arranged on a second crawler frame (21); hydraulic lifting legs (112) are respectively arranged at the four end corners of the first crawler frame (11), and the hydraulic lifting legs (112) are used to lift and level the entire device; The armor conveying device (13) comprises a first frame (131), on which a first driving shaft (132), a first driven shaft (133), a first driving mechanism (134) for driving the first driving shaft (132), and a rotatable material guide device (135) located at a feeding end of the armor conveying device (13), are arranged, the first frame (131) comprising a first driving shaft (132), the first driven shaft (133), the first driving mechanism (134) for driving the first driving shaft (132), and the first driving mechanism (134) for driving the first driven shaft (133), the first driving mechanism (134) and the first driving mechanism (134) being connected to each other by a first chain (136), a metal armor plate (138) being arranged between each of the two opposing sections of the first chains (136), the first retaining edges (1381) being arranged at the two ends of the metal armor plate (138), and all the metal armor plates (138) being used in sequence to convey the crushed material; The rotatable material guide device (135) comprises a first material guide plate located at the feed end of the armor conveying device (13) and side material guide plates respectively matched with two sides of the first material guide plate, the first material guide plate being located at the end of the feed end of the armor conveying device (13), the two side material guide plates being respectively located on both sides of the conveying direction of the armor conveying device (13), and the first material guide plate and the two side material guide plates forming a feed interval; the first material guide plate and the two side material guide plates are both arranged to be inclined outwards, that is, the size of the feed interval gradually decreases from top to bottom; the first material guide plate is detachably connected to the two side material guide plates via locking members, the lower end of the first material guide plate and the lower ends of the two side material guide plates are respectively hinged to the first frame (131), and the first material guide plate and the two side material guide plates can be respectively rotated outwards to open; The fine material conveyor (28) comprises a second frame (281), on which a second conveyor belt (282) for conveying materials, a seventh drive mechanism (288), an eighth drive mechanism (285), and an active roller (283) and a driven roller (284) matched with the second conveyor belt (282) are arranged, wherein the active roller (283) is located at one end of the second frame (281) and the driven roller (284) is located at the other end of the second frame (281), the active roller (283) is driven by a power mechanism, the upper conveying portion of the second conveyor belt (282) conveys materials, and the lower conveying portion of the second conveyor belt (282) bypasses below the second frame (281); The second frame (281) comprises a feed section (2814), a middle section (2815) and a discharge section (2816) which are hinged in sequence; the feed section (2814) and the middle section (2815) are hinged at one end close to each other; the middle section (2815) and the discharge section (2816) are hinged at one end close to each other; the seventh drive mechanism (288) can drive the middle section (2815) to rotate up and down with the hinge between the middle section (2815) and the feed section (2814) as the center; the eighth drive mechanism (285) can drive the discharge section (2816) to rotate left and right with the hinge between the discharge section (2816) and the middle section (2815) as the center; so that the fine material conveyor (28) can be folded and scaled on the second crawler frame (21) and unfolded outward relative to the second crawler frame (21); The second frame (281) is provided with a buffer support assembly (286) matched with the second conveyor belt (282); the buffer support assembly (286) is located at the feeding end of the second conveyor belt (282) to elastically support the second conveyor belt (282); The second frame (281) is provided with a telescopic support assembly (2817) cooperating with the seventh driving mechanism (288); The structures of the first conveyor (14), the second conveyor (23), the return conveyor (26), the first discharge conveyor (17), the second discharge conveyor (27) and the fine material conveyor (28) are substantially the same; The crushing device (12) comprises a lifting arm body (121), a lifting mechanism (122), a first supporting assembly (123), an angle adjustment assembly (124), a crushing bucket (125) and a flexible material guiding dust cover (126); the top of the lifting arm body (121) is connected to the crushing bucket (125) via the angle adjustment assembly (124); the angle adjustment assembly (124) is capable of adjusting the angle of the crushing bucket (125); and the flexible material guiding dust cover (126) is configured to The lifting arm body (121) is arranged at the outlet of the crushing bucket (125) to guide the crushed materials to the armored conveying device (13); the bottom of the lifting arm body (121) is hinged to the first crawler frame (11); the lifting mechanism (122) can push the lifting arm body (121) to rotate up and down so that the crushing bucket (125) connected to the angle adjustment component (124) can be raised and lowered; and the first support component (123) can support the lifting arm body (121).

2. The crushing system for reinforced concrete long strip members according to claim 1, characterized in that: The multi-stage vibrating screen (25) comprises a screen box (252) and a fifth driving mechanism (253). The screen box (252) is provided with multiple layers of screen plates (2521) from top to bottom. The screen holes of the screen plates (2521) decrease layer by layer from top to bottom. The discharge port of the screen plate (2521) at the top layer corresponds to the return material conveyor (26) through a first chute (257). The discharge ports of the screen plates (2521) at the remaining layers correspond to different fine material conveyors (28) through second chutes (258). The second discharge conveyor (27) is located below the screen box (252) and corresponds to the screen plate (2521) at the bottom layer.

3. The crushing system for reinforced concrete long strip members according to claim 2, characterized in that: The screen box (252) and the fifth driving mechanism (253) are arranged on a first base (251); one end of the first base (251) is hinged to the second crawler frame (21); the first base (251) is provided with a first material dropping area (2514) corresponding to the screen plate (2521) at the bottom layer; and the sixth driving mechanism (256) is capable of driving the first base (251) to rotate up and down with the hinge between the first base (251) and the second crawler frame (21) as the center.

4. The crushing system for reinforced concrete long strip members according to claim 1, characterized in that: The first magnetic separation device (16) comprises a first bracket (161), a first magnetic body (162) and a first conveyor belt (166) arranged on the first bracket (161); a second driving shaft (163) and a second driven shaft (164) matched with the first conveyor belt (166) are arranged on the first bracket (161); the second driving shaft (163) is driven by a second driving mechanism (165); the first magnetic body (162) is fixed between the second driven shaft (164) and the second driving shaft (163); the first magnetic body (162) is located in an internal area formed by the first conveyor belt (166) and matched with the lower conveying part of the first conveyor belt (166); the metal magnetic parts in the crushed material can be adsorbed on the lower conveying part of the first conveyor belt (166) for transportation.

5. The crushing system for reinforced concrete long strip members according to claim 1, characterized in that: The impact crusher (22) comprises a first housing (221), a plate hammer (222), an impact plate (223), a third driving mechanism (224), a feed chute (225) and a rotatable return chute (226), wherein the inlet of the rotatable return chute (226) corresponds to the outlet of the return conveyor (26), the impact plate (223) and the plate hammer (222) are arranged in the first housing (221), the impact plate (223) corresponds to the plate hammer (222), and the first discharge conveyor (17) is provided with a first housing (221). ) has an outlet corresponding to the inlet of the feed chute (225), the rotatable return chute (226) is located on one side of the feed chute (225) and is hinged to the feed chute (225), the third driving mechanism (224) drives the plate hammer (222) to rotate to perform a first crushing on the material entering the action area of ​​the plate hammer (222), the material is ejected onto the impact plate (223) and can be crushed again, and the material rebounded by the impact plate (223) can fall into the action area of ​​the plate hammer (222) and continue to be crushed.

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