Iron removal device for construction waste in road engineering

Abstract

The invention relates to the technical field of solid material separation, in particular to an iron removal device for construction waste in road engineering. The device comprises a powerful magnet and a feeding assembly. The feeding assembly comprises a supporting table, a driving motor and a belt conveyor. The powerful magnet is mounted above the supporting table; the driving motor is fixedly connected with the supporting table; an output shaft of the driving motor is fixedly sleeved with a first incomplete gear, and a shaft rod of a driving roller of the belt conveyor is fixedly sleeved with a first gear meshed with the first incomplete gear; the belt conveyor can convey construction waste loaded at one end of the driven roller to one end of the driving roller. And under the condition that the first gears stop, the construction waste between the two adjacent partition plates is located under the powerful magnets. The device can automatically adjust the height position of the powerful magnet, so that the adsorption effect is enhanced; and adsorbents on the surface of the powerful magnet can be cleaned in time, so that the powerful magnet always keeps high adsorption capacity.

Description

Technical Field

[0001] The invention relates to the technical field of solid material separation, and in particular to an iron removal device for construction waste in road engineering. Background Art

[0002] For road projects, it is usually necessary to re-plan and build new roads on the original roads. Therefore, the demolished original road surface becomes the construction waste generated in the road project. These construction wastes can usually be reused as roadbed fillers after being crushed, or used as concrete aggregates in other projects with lower strength requirements. However, for industrial floors, heavy-load roads or port terminal pavements, in order to improve the crack resistance and durability of the pavement, steel fibers are added to the concrete used to cast the pavement. If the construction waste generated after the demolition of such pavement is to be used as concrete aggregates in other projects with lower strength requirements, the steel fibers contained therein need to be separated, otherwise, these used steel fibers will rust, thereby reducing the durability and strength of the building body cast using the construction waste.

[0003] Most of the existing iron removal devices for construction waste in road projects use strong magnets to adsorb ferromagnetic materials in the stacked construction waste, but the adsorption effect of strong magnets is greatly affected by distance, and the stacking height of construction waste is usually not consistent. If the strong magnet is too far away from the waste, the adsorption effect will be greatly reduced; and such iron removal devices for construction waste in road projects can usually only adsorb and clean the surface of the stacked construction waste; in addition, when the ferromagnetic materials adsorbed by the strong magnet gradually accumulate, if the ferromagnetic materials on the surface of the strong magnet are not cleaned in time, the adsorption effect of the strong magnet in subsequent work will be poor. Summary of the invention

[0004] The purpose of the present invention is to provide an iron removal device for construction waste in road engineering, which uses a strong magnet to adsorb ferromagnetic substances in the construction waste, thereby achieving the purpose of separating ferromagnetic substances from the construction waste. The device can automatically adjust the height position of the strong magnet during operation, thereby enhancing the adsorption effect; in addition, it can also clean the adsorbed substances on the surface of the strong magnet in time, so that the strong magnet always maintains a high adsorption capacity.

[0005] The present invention provides an iron removal device for construction waste in road engineering, the iron removal device comprises a strong magnet, and further comprises: a feeding assembly, the feeding assembly comprises a support platform, a driving motor and a belt conveyor; a plurality of partitions are fixedly arranged on the outer peripheral surface of the conveyor belt of the belt conveyor, each of the partitions is perpendicular to the outer surface of the conveyor belt and perpendicular to the length direction of the conveyor belt, and each of the partitions is evenly distributed along the length direction of the conveyor belt; the inner peripheral surface of the conveyor belt located in the outbound section abuts against the table surface of the supporting platform; two mutually parallel side baffles extend upward from the table surface, and the two side baffles respectively abut against the two sides of the conveyor belt; the strong magnet Installed above the support platform; the drive motor and the support platform are fixedly connected, and the output shaft of the drive motor is parallel to the width direction of the conveyor belt; a first incomplete gear is fixedly sleeved on the output shaft, and a first gear meshing with the first incomplete gear is fixedly sleeved on the shaft of the active roller of the belt conveyor; the belt conveyor can transport the construction waste loaded on one end of the driven roller to one end of the active roller; the first incomplete gear can make the conveyor belt intermittently feed to the bottom of the strong magnet, and when the first gear stops, the construction waste between two adjacent partitions is located directly below the strong magnet.

[0006] Furthermore, the iron removal device also includes: a height adjustment component, and the height adjustment component can adjust the height position of the strong magnet.

[0007] Furthermore, the height adjustment assembly includes a second gear, a first crank, a first connecting rod, a support frame and a first spring; the support frame is fixedly installed above the support platform, and a sliding part is fixedly connected above the strong magnet, and the sliding part and the support frame are slidably connected in a vertical direction; the first spring is vertically arranged, and the two ends of the first spring are respectively connected to the strong magnet and the support frame; the second gear is rotatably arranged on the support platform and meshes with the first incomplete gear; the first crank and the second gear are fixedly connected, and the end of the first crank away from the second gear is hinged to the first connecting rod, and the end of the first connecting rod away from the first crank is hinged to the sliding part.

[0008] Furthermore, during the rotation of the first incomplete gear, at least one of the first gear and the second gear stops; when the first incomplete gear drives the second gear to rotate, the strong magnet performs reciprocating linear motion in the vertical direction, and when the second gear stops, the first spring causes the strong magnet to be located at the upper limit position.

[0009] Furthermore, the iron removal device also includes: a discharge assembly, the discharge assembly includes a first bevel gear, a second bevel gear, a second incomplete gear, a third gear, a second crank, a second connecting rod and a discharge push plate; the discharge push plate and the support frame are slidably connected along the width direction of the conveyor belt; the first bevel gear is fixedly sleeved on the output shaft, the second bevel gear is rotatably set on the support platform and the rotating shaft is parallel to the feeding direction of the conveyor belt, and the second bevel gear is meshed with the first bevel gear; the second incomplete gear and the second bevel gear are coaxially fixedly connected, and the third gear is rotatably set on the support platform and meshed with the second incomplete gear; the second crank and the third gear are fixedly connected, one end of the second crank away from the third gear is hinged to the second connecting rod, and one end of the second connecting rod away from the second crank is hinged to the discharge push plate; when the second gear stops, the upper surface of the discharge push plate coincides with the lower surface of the strong magnet, and the second incomplete gear drives the third gear to rotate, so that the discharge push plate performs reciprocating linear motion along the width direction of the conveyor belt.

[0010] Furthermore, a receiving groove is fixedly connected below the unloading push plate, and the receiving groove can receive the adsorbed matter scraped off from the strong magnet by the unloading push plate and guide it to an external adsorbed matter collection bin.

[0011] Furthermore, the iron removal device also includes: a stirring component, the stirring component includes a fourth gear, a fifth gear, a rotating drum, a stirring rod and a telescopic mechanism; the fourth gear is fixedly sleeved on the output shaft, the rotating drum is rotatably arranged on the support platform, and the fifth gear meshing with the fourth gear is fixedly sleeved on the rotating drum; the stirring rod is inserted into the rotating drum, and a stirring paddle is fixedly arranged on the end of the stirring rod close to the conveyor belt, a through hole is opened on the side baffle close to one side of the rotating drum, a rotating plate is rotatably arranged in the through hole, and a rotating plate engaged with the fourth gear is opened on the rotating plate. The stirring paddles are provided with a plurality of axial slide grooves on the peripheral wall of the rotating drum, and a plurality of radially extending sliders are fixedly arranged at the end of the stirring rod away from the conveyor belt, and each of the sliders is slidably connected with each of the slide grooves in a one-to-one correspondence; a limit block is also fixedly arranged on the slider, and the limit block abuts against the peripheral wall of the rotating drum; the telescopic mechanism can, when the first gear stops, insert the stirring paddles into the construction waste directly below the strong magnet, and pull out the stirring paddles before the construction waste leaves under the strong magnet.

[0012] The cam is connected with the support member by the spring, and the two ends of the spring are connected with each other with a spring, and the two ends of the spring are connected with each other with a spring, and the two ends of the spring are connected with each other with a spring, and the two ends of the spring are connected with each other with a spring, and the two ends of the spring are connected with each other with a spring, and the two ends of the spring are connected with each other with a spring, and the two ends of the spring are connected with each other with a spring, Above; when the second gear rotates after the first gear stops, the strong magnet makes a reciprocating linear motion in the vertical direction, so that the unlocking rod pushes the abutting part downward, thereby separating the sliding pin and the tenon, and the stirring paddle is inserted into the construction waste directly below the strong magnet under the action of the fourth spring; after the second gear stops and before the first gear rotates, the third gear drives the unloading push plate to be inserted under the strong magnet along the width direction of the conveyor belt. In the process of the unloading push plate being inserted under the strong magnet, the tenon can abut against the wedge surface and make the sliding pin slide vertically downward, so that the tenon can pass the position of the sliding pin; in the process of the unloading push plate being pulled out from under the strong magnet along the width direction of the conveyor belt, the tenon abuts against the back side of the wedge surface, so that the tenon can pull the stirring paddle away from the construction waste.

[0013] Furthermore, the iron removal device also includes a waste slag collection bin, which is located below an end of the conveyor belt away from the driven roller.

[0014] Furthermore, a plurality of circumferentially evenly distributed latching teeth are fixedly provided on the outer circumferential surface of the active roller, and a plurality of latching grooves corresponding to the latching teeth are provided on the inner circumferential surface of the conveyor belt.

[0015] Compared with the prior art, the present invention has the following advantages and beneficial effects: 1. An iron removal device for construction waste in road engineering provided by an embodiment of the present invention makes a strong magnet perform reciprocating linear motion in a vertical direction. On the one hand, the downward movement of the strong magnet can be used to push the construction waste at a higher position downward, thereby making the thickness of the construction waste between two adjacent partitions uniform. On the other hand, the ferromagnetic substances in the construction waste with uniform thickness are attracted by the strong magnet and adsorbed on the lower surface of the strong magnet, and the distribution is relatively uniform, which can make the attraction capacity of each part of the strong magnet relatively consistent; and after the second gear stops rotating, the first spring can make the strong magnet be located at the upper limit position of the vertical reciprocating linear motion, so that the strong magnet will not affect the subsequent feeding of the conveyor belt; 2. An iron removal device for construction waste in road engineering provided by an embodiment of the present invention can timely remove the ferromagnetic material adsorbed on the lower surface of the strong magnet through the unloading component, thereby ensuring that the strong magnet maintains good adsorption capacity in each feeding cycle of the conveyor belt; 3. An iron removal device for construction waste in road projects provided by an embodiment of the present invention can turn over the construction waste accumulated under the strong magnet through the stirring action of the stirring paddle, and then turn over the construction waste at the bottom to the surface, thereby improving the efficiency of the strong magnet's adsorption; it can also use the action of the unloading push plate to be pulled out from under the strong magnet to pull the stirring paddle out of the construction waste, thereby preventing the stirring paddle from interfering with the feeding action of the conveyor belt in the next cycle, and also use the downward action of the strong magnet to "unlock" the stirring paddle locked by the tenon on the side of the conveyor belt facing the rotating drum, so that the stirring paddle can be actually inserted into the construction waste at an appropriate time. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] The drawings described herein are used to provide a further understanding of the embodiments of the present invention, constitute a part of this application, and do not constitute a limitation of the embodiments of the present invention. In the drawings: Figure 1 A schematic diagram of the three-dimensional structure of an iron removal device for construction waste in road engineering drawn according to an embodiment of the present invention; Figure 2 Based on Figure 1 A partial magnified view of the drawn A area; Figure 3 Based on Figure 1 A cross-sectional view of the iron removal device for construction waste in road engineering; Figure 4 Based on Figure 3 A partial magnified view of the drawn B area; Figure 5 A schematic diagram of the three-dimensional structure of the iron removal device for construction waste in road engineering from another perspective drawn according to an embodiment of the present invention; Figure 6 Based on Figure 5 A partial magnified view of the C region drawn; Figure 7 Based on Figure 5 A cross-sectional view of the iron removal device for construction waste in road engineering; Figure 8 Based on Figure 7 A partial magnified view of the D region is drawn; Fig. 9 A schematic diagram of the three-dimensional structure of the iron removal device for construction waste in road engineering at another viewing angle drawn according to an embodiment of the present invention; Fig.10 Based on Fig. 9 A partial magnified view of the E region drawn; Fig.11 Based on Fig. 9 A magnified partial view of region F is drawn.

[0017] Marks and corresponding parts names in the attached drawings: 1-strong magnet; 11-sliding part; 211-support table; 212-side baffle; 213-rotating plate; 214-table top; 221-driving motor; 222-output shaft; 231-conveyor belt; 232-partition plate; 233-active roller; 234-driven roller; 24-first incomplete gear; 25-first gear; 31-second gear; 32-first crank; 33-first connecting rod; 34-support frame; 35-first spring; 41-first bevel gear; 42-second bevel gear; 43 -second incomplete gear; 44-third gear; 45-second crank; 46-second connecting rod; 47-unloading push plate; 48-receiving groove; 51-fourth gear; 52-fifth gear; 55-rotating drum; 551-slide groove; 56-stirring rod; 561-stirring paddle; 562-sliding block; 563-limiting block; 61-tenon; 62-sliding pin; 621-wedge surface; 622-abutting part; 63-guide groove; 64-second spring; 65-third spring; 66-fourth spring; 67-unlocking lever. DETAILED DESCRIPTION

[0018] In order to make the purpose, technical scheme and advantages of the present invention more clearly understood, the present invention is further described in detail below in conjunction with the embodiments and drawings. The schematic implementation modes and descriptions of the present invention are only used to explain the present invention and are not intended to limit the present invention. It should be noted that the present invention is already in the actual development and use stage.

[0019] For industrial floors, heavy-load roads or pavements at port terminals, steel fibers are added to the concrete used to cast the pavement in order to improve the crack resistance and durability of the pavement. If the construction waste generated after the demolition of such pavement is to be used as concrete aggregate and then used in other projects with lower strength requirements, the steel fibers contained therein need to be separated, otherwise, these used steel fibers will rust (there will be a large number of fine cracks inside the used steel fiber structure, which will be more susceptible to rust), thereby reducing the durability and strength of the building cast using the construction waste.

[0020] Most existing iron removal devices use strong magnets to adsorb ferromagnetic materials in construction waste. However, the adsorption effect of strong magnets is greatly affected by distance, and the stacking height of construction waste is usually not consistent. If the strong magnet is too far away from the waste, the adsorption effect will be greatly reduced. In addition, when the ferromagnetic materials adsorbed by the strong magnet gradually accumulate, if the ferromagnetic materials on the surface of the strong magnet are not cleaned in time, the adsorption effect of the strong magnet will be poor in subsequent work.

[0021] To this end, the present invention proposes an iron removal device for construction waste in road engineering, which uses a strong magnet to adsorb ferromagnetic substances in the construction waste, thereby achieving the purpose of separating ferromagnetic substances from the construction waste. The device can automatically adjust the height position of the strong magnet during operation, thereby enhancing the adsorption effect; in addition, it can also clean the adsorbed substances on the surface of the strong magnet in time, so that the strong magnet always maintains a high adsorption capacity.

[0022] In the present application, an "incomplete gear" refers to a gear whose circumferential surface has gear teeth distributed only within a preset arc length range.

[0023] In the accompanying drawings, Figure 1 Shows the unloading push plate on the side of the conveyor belt facing the drum; Figure 3 and Figure 7 The section plane is the same as the section plane, which is perpendicular to the feeding direction and passes through the unlocking rod; Figure 5 Shows the unloading push plate under the strong magnet; Fig. 9 In order to facilitate the display of the fourth spring, part of the peripheral wall of the rotating drum, the unloading push plate and the receiving groove are omitted.

[0024] Embodiment 1: like Figures 1 to 10 As shown, this embodiment provides an iron removal device for construction waste in road engineering, the device includes a strong magnet 1, and also includes: A feeding assembly, the feeding assembly comprising a support table 211, a drive motor 221 and a belt conveyor; A plurality of partitions 232 are fixedly arranged on the outer peripheral surface of the conveyor belt 231 of the belt conveyor, each of the partitions 232 is perpendicular to the outer surface of the conveyor belt 231 and perpendicular to the length direction of the conveyor belt 231, and each of the partitions 232 is evenly distributed along the length direction of the conveyor belt 231; The inner circumference of the conveyor belt 231 in the outbound section abuts against the table 214 of the support platform 211; the table 214 has two parallel side baffles 212 extending upward, and the two side baffles 212 abut against the two sides of the conveyor belt 231 respectively; the strong magnet 1 is installed above the support platform 211; The driving motor 221 is fixedly connected to the support platform 211, and the output shaft 222 of the driving motor 221 is parallel to the width direction of the conveyor belt 231; a first incomplete gear 24 is fixedly sleeved on the output shaft 222, and a first gear 25 meshing with the first incomplete gear 24 is fixedly sleeved on the shaft of the active roller 233 of the belt conveyor (the shaft is fixedly connected to the active roller 233); The belt conveyor can transport the construction waste loaded on one end of the driven roller 234 to one end of the active roller 233; the first incomplete gear 24 can enable the conveyor belt 231 to intermittently feed under the powerful magnet 1, and when the first gear 25 stops, the construction waste between two adjacent partitions 232 is located directly under the powerful magnet 1.

[0025] It should be understood that by adjusting the parameters of the first incomplete gear 24 and the first gear 25 and adjusting the initial position of the conveyor belt 231, it is possible to make the first gear 25 stop (the teeth of the first incomplete gear 24 are not in contact with the teeth of the first gear 25), so that the construction waste between two adjacent partitions 232 is located directly below the strong magnet 1, and the first gear 25 rotates once to enable the conveyor belt 231 to feed one workstation (that is, to transport the construction waste between the next two adjacent partitions 232 to directly below the strong magnet 1); preferably, the conveyor belt 231 is installed horizontally, which can effectively prevent the conveyor belt 231 from shifting by itself when the first gear 25 stops.

[0026] Preferably, a plurality of circumferentially evenly distributed latching teeth are fixedly provided on the outer circumference of the active roller 233, and a plurality of latching grooves corresponding to the latching teeth are provided on the inner circumference of the conveyor belt 231 (the structure of the latching teeth and the latching grooves are not shown in the figure). This can prevent the active roller 233 and the conveyor belt 231 from slipping, thereby ensuring that when the first gear 25 stops, the construction waste between two adjacent partitions 232 is located directly below the strong magnet 1, and the first gear 25 rotates once to allow the conveyor belt 231 to feed one station.

[0027] Preferably, the iron removal device further comprises a waste slag collection bin, which is located below the end of the conveyor belt 231 away from the driven roller 234. Thus, after the construction waste from one end of the driven roller 234 absorbs the ferromagnetic material through the strong magnet 1, the remaining waste slag will directly fall into the waste slag collection bin below at the location of the active roller 233 of the conveyor belt 231, thereby facilitating the subsequent unified treatment of the waste slag.

[0028] Obviously, for a large amount of stacked construction waste, directly using a strong magnet 1 to absorb it on the surface can only absorb the ferromagnetic materials near the surface, but it is powerless against the ferromagnetic materials in the deeper layer; in the iron removal device for construction waste in road engineering provided in this embodiment, it is only necessary to load the large amount of stacked construction waste one by one on the conveyor belt 231 at one end of the driven roller 234 (that is, continuously loaded on one end of the driven roller 234 of the conveyor belt 231), and the construction waste can be continuously transported to the bottom of the strong magnet 1 under the action of the driving motor 221 for quick and thorough iron removal.

[0029] Embodiment 2: like Figures 1 to 11 As shown, this embodiment is based on embodiment 1, except that, in this embodiment, the iron removal device further includes a height adjustment component, and the height adjustment component can adjust the height position of the strong magnet 1.

[0030] More specifically, the height adjustment assembly includes a second gear 31, a first crank 32, a first connecting rod 33, a support frame 34 and a first spring 35; The support frame 34 is fixedly installed above the support platform 211, and a sliding part 11 is fixedly connected above the strong magnet 1, and the sliding part 11 and the support frame 34 are slidably connected along the vertical direction; The first spring 35 is vertically arranged, and two ends of the first spring 35 are respectively connected to the strong magnet 1 and the support frame 34; The second gear 31 is rotatably disposed on the support platform 211 and meshes with the first incomplete gear 24; The first crank 32 is fixedly connected to the second gear 31 , one end of the first crank 32 away from the second gear 31 is hinged to the first connecting rod 33 , and one end of the first connecting rod 33 away from the first crank 32 is hinged to the sliding part 11 .

[0031] During the rotation of the first incomplete gear 24, at least one of the first gear 25 and the second gear 31 stops; When the first incomplete gear 24 drives the second gear 31 to rotate, the strong magnet 1 performs reciprocating linear motion in the vertical direction, and when the second gear 31 stops, the first spring 35 makes the strong magnet 1 located at the upper limit position.

[0032] It should be understood that, based on the aforementioned embodiment, by adjusting the parameters and installation position of the second gear 31, the first gear 25 can be rotated to transport the construction waste between the two adjacent partitions 232 to the bottom of the powerful magnet 1 and stay there, and then the second gear 31 starts to rotate under the action of the first incomplete gear 24; the second gear 31, the first crank 32, the first connecting rod 33, the sliding part 11 and the support frame 34 together constitute a crank-connecting rod mechanism, and the rotation of the second gear 31 can make the powerful magnet 1 perform reciprocating linear motion in the vertical direction.

[0033] In this embodiment, after the construction waste loaded on the conveyor belt 231 is fed to the bottom of the strong magnet 1 and stops, the second gear 31 starts to rotate, and then the strong magnet 1 makes a reciprocating linear motion in the vertical direction, thereby changing the distance between the strong magnet 1 and the construction waste below it; obviously, the height of the construction waste loaded between two adjacent partitions 232 on the conveyor belt 231 is relatively low but the height is usually not consistent, and there is a relatively high protrusion, and the position distribution is uneven; if the strong magnet 1 is fixedly installed, its position is high and it is difficult to effectively attract the ferromagnetic material at the bottom of the construction waste on the conveyor belt 231, and if it is low, it is easy to block the fed construction waste and affect the normal feeding of the conveyor belt 231. The iron removal device for construction waste in road engineering provided in this embodiment makes the strong magnet 1 perform reciprocating linear motion in the vertical direction. On the one hand, the downward movement of the strong magnet 1 can be used to push the construction waste in a higher position downward, thereby making the thickness of the construction waste between the two adjacent partitions 232 uniform. On the other hand, the ferromagnetic material in the construction waste with uniform thickness is attracted by the strong magnet and adsorbed on the lower surface of the strong magnet and is also relatively evenly distributed, which can make the attraction capacity of each part of the strong magnet relatively consistent (if the height of the construction waste is inconsistent, the thickness of the ferromagnetic material adsorbed by the strong magnet area corresponding to the higher height position will be relatively thick, and the adsorption effect of this area will become worse when the adsorption continues); and after the second gear 31 stops rotating (the teeth of the first incomplete gear 24 do not contact the teeth of the second gear 31), the first spring 35 can make the strong magnet 1 located at the upper limit position of the vertical reciprocating linear motion, so that the strong magnet 1 will not affect the subsequent feeding of the conveyor belt 231.

[0034] Embodiment 3: This embodiment is based on Embodiment 2, except that, in this embodiment, the iron removal device further includes: A discharge assembly, the discharge assembly comprising a first bevel gear 41, a second bevel gear 42, a second incomplete gear 43, a third gear 44, a second crank 45, a second connecting rod 46 and a discharge push plate 47; The unloading push plate 47 and the support frame 34 are slidably connected along the width direction of the conveyor belt 231; The first bevel gear 41 is fixedly sleeved on the output shaft 222, and the second bevel gear 42 is rotatably disposed on the support platform 211 with the rotating shaft parallel to the feeding direction of the conveyor belt 231, and the second bevel gear 42 is meshed with the first bevel gear 41; The second incomplete gear 43 and the second bevel gear 42 are coaxially fixedly connected, and the third gear 44 is rotatably disposed on the support platform 211 and meshes with the second incomplete gear 43; The second crank 45 is fixedly connected to the third gear 44, one end of the second crank 45 away from the third gear 44 is hinged to the second connecting rod 46, and one end of the second connecting rod 46 away from the second crank 45 is hinged to the unloading push plate 47; When the second gear 31 stops, the upper surface of the unloading push plate 47 overlaps with the lower surface of the strong magnet 1, and the second incomplete gear 43 drives the third gear 44 to rotate, so that the unloading push plate 47 performs reciprocating linear motion along the width direction of the conveyor belt 231.

[0035] More preferably, a receiving groove 48 is fixedly connected below the discharge push plate 47, and the receiving groove 48 can receive the adsorbed matter scraped from the strong magnet 1 by the discharge push plate 47 and guide it to an external adsorbed matter collection bin.

[0036] It should be understood that, during the process of the unloading push plate 47 being inserted under the powerful magnet 1, the receiving groove 48 first enters under the powerful magnet 1 (see Figure 3 and Figure 7 ).

[0037] Accordingly, during the period when the conveyor belt 231 feeds a partition plate 232 position, the strong magnet 1 can completely absorb the ferromagnetic material in the construction waste remaining thereunder, and then the second incomplete gear 43 drives the third gear 44 to rotate, so that the unloading push plate 47 makes a reciprocating linear motion along the width direction of the conveyor belt 231; during the process of the unloading push plate 47 being inserted under the strong magnet 1, the ferromagnetic material absorbed on the lower surface of the strong magnet 1 can be scraped off, and the ferromagnetic material scraped off from the lower surface of the strong magnet 1 by the unloading push plate 47 falls into the receiving groove 48 (when the unloading push plate 47 is inserted to the strong magnet 1, the ferromagnetic material at the front end of the unloading push plate 47 gradually accumulates, and will gradually fall off after the thickness exceeds a certain degree. After the unloading push plate 47 is inserted to the other side of the strong magnet 1, all the ferromagnetic material falls into the receiving groove 48). In the process of the unloading push plate 47 being pulled out from under the strong magnet 1, the unloading push plate 47 can prevent the ferromagnetic material in the receiving groove 48 from being adsorbed by the strong magnet 1. Then, after the unloading push plate 47 is pulled out from under the strong magnet 1, the ferromagnetic material in the receiving groove 48 is no longer attracted by the strong magnet 1, and can be smoothly led out to the adsorbent collection bin. Therefore, the unloading assembly can timely lead out the ferromagnetic material adsorbed on the lower surface of the strong magnet 1, thereby ensuring that the strong magnet 1 maintains a good adsorption capacity in each feeding cycle of the conveyor belt 231.

[0038] Embodiment 4: This embodiment is based on Embodiment 3, except that, in this embodiment, the iron removal device further includes: A stirring assembly, the stirring assembly comprising a fourth gear 51, a fifth gear 52, a rotating drum 55, a stirring rod 56 and a telescopic mechanism; The fourth gear 51 is fixedly sleeved on the output shaft 222, the rotating drum 55 is rotatably disposed on the support platform 211, and a fifth gear 52 meshing with the fourth gear 51 is fixedly sleeved on the rotating drum 55; The stirring rod 56 is inserted into the rotating drum 55, and a stirring blade 561 is fixedly arranged at one end of the stirring rod 56 close to the conveyor belt 231. A through hole is opened on the side baffle 212 close to the rotating drum 55, and a rotating plate 213 is rotatably arranged in the through hole. The rotating plate 213 is opened with a plug hole corresponding to the stirring blade 561; A plurality of axial slide grooves 551 are provided on the peripheral wall of the rotating drum 55, and a plurality of radially extending sliders 562 are fixedly provided at one end of the stirring rod 56 away from the conveyor belt 231, and each of the sliders 562 is slidably connected to each of the slide grooves 551 in a one-to-one correspondence; a limit block 563 is also fixedly provided on the slider 562, and the limit block 563 abuts against the peripheral wall of the rotating drum 55 (please refer to Fig. 9 and Fig.10, which shows the situation where the limit block 563 abuts against the inner peripheral wall of the rotating drum 55); The telescopic mechanism can insert the stirring blade 561 into the construction waste directly under the powerful magnet 1 when the first gear 25 stops, and remove the stirring blade 561 before the construction waste leaves under the powerful magnet 1.

[0039] Therefore, in each feeding cycle of the conveyor belt 231, the stirring action of the stirring blade 561 can turn over the construction waste accumulated under the strong magnet 1, and then turn the construction waste at the bottom to the surface, thereby improving the adsorption efficiency of the strong magnet 1.

[0040] Preferably, the stirring assembly has two sets of rotating drums 55 and stirring rods 56 parallel to each other, and the fifth gears 52 on the two rotating drums 55 are meshed with each other (see Figure 1 , Figure 2 , Figure 5 as well as Fig. 9 ), thereby enhancing the turning effect of construction waste.

[0041] It should be understood that the stirring rod 56 is always in a rotating state. In order to ensure that the stirring paddle 561 extracted from the construction waste can be smoothly inserted into the construction waste again, during the process of the stirring paddle 561 being extracted from the construction waste, the end of the stirring paddle 561 away from the slider 562 is always located in the insertion hole, and the size of the end gradually decreases along the insertion direction of the stirring paddle 561.

[0042] Specifically, the telescopic mechanism includes a tenon 61, a sliding pin 62, a guide groove 63, a second spring 64, a third spring 65, a fourth spring 66 and an unlocking lever 67; The two ends of the second spring 64 are respectively connected to the unloading push plate 47 and the support platform 211 (such as Figure 1 , Figure 2 , Figure 5 , Figure 6 As shown in the figure, in order to facilitate the display of other structures, the second spring 64 is only schematically shown), the tenon 61 is fixedly connected to the unloading push plate 47; the guide groove 63 is rotatably mounted on the stirring rod 56 and the guide groove 63 does not rotate relative to the support platform 211 (please refer to Figure 6, the guide groove 63 is essentially a connector with a groove structure, that is, "a guide groove 63 is provided on the connector, the connector is rotatably mounted on the stirring rod, and the connector does not rotate relative to the support platform 211", for example, the outer contour of the connector is a non-circular contour, and a corresponding anti-rotation portion (the anti-rotation portion is not shown) extends from the support platform 211, and the anti-rotation portion abuts against the outer contour of the connector, thereby limiting the relative rotation of the connector and the support platform 211; in particular, for the aforementioned "the stirring assembly has two sets of mutually parallel rotating drums 55 and stirring rods 56, and the fifth gears 52 on the two rotating drums 55 are meshed with each other", it is preferably as follows Figure 5 , Figure 6 The guide groove 63 shown is rotatably connected to both stirring rods 56 (the connecting member is rotatably connected to both stirring rods 56), in this case, no anti-rotation part is required), the sliding pin 62 and the guide groove 63 are slidably connected in the vertical direction, and the two ends of the third spring 65 are respectively connected to the sliding pin 62 and the guide groove 63; a wedge surface 621 is provided on the sliding pin 62, and the wedge surface 621 faces the side where the slider 562 is located, and an abutment part 622 is also fixedly provided on the sliding pin 62; the two ends of the fourth spring 66 are respectively connected to the slider 562 and the rotating drum 55; the unlocking rod 67 is fixedly connected to the strong magnet 1; When the first gear 25 rotates, the unloading push plate 47 and the stirring paddle 561 are both located on the side of the conveyor belt 231 facing the rotating drum 55, and the tenon 61 abuts against the back side of the wedge-shaped surface 621 (at this time, the second spring 64 keeps the unloading push plate 47 at the extreme position of the reciprocating linear motion away from the conveyor belt 231, the fourth spring 66 accumulates elastic potential energy and the release of this elastic potential energy can push the stirring rod 56 toward the conveyor belt 231, and the tenon 61 abuts against the back side of the wedge-shaped surface 621 to prevent the stirring rod 56 from being pushed by the elastic potential energy accumulated by the fourth spring 66), and the end of the unlocking rod 67 is located above the abutting portion 622 (please refer to Figure 3 and Figure 4 ); When the second gear 31 rotates after the first gear 25 stops, the strong magnet 1 performs reciprocating linear motion in the vertical direction, so that the unlocking rod 67 pushes the abutting portion 622 downward, thereby separating the sliding pin 62 and the tenon 61, and the stirring paddle 561 is inserted into the construction waste directly below the strong magnet 1 under the action of the fourth spring 66 (in this process, the unlocking rod 67 pushes the abutting portion 622 downward, thereby accumulating elastic potential energy of the third spring 65, and the sliding pin 62 and the tenon 61 are separated, thereby releasing the elastic potential energy of the fourth spring 66 to push the stirring rod 56, thereby inserting the stirring paddle 561 into the construction waste below the strong magnet 1. During the process of inserting the stirring paddle 561 into the construction waste below the strong magnet 1, the third spring 65 releases the elastic potential energy to push the sliding pin 62 upward); After the second gear 31 stops and before the first gear 25 rotates, the third gear 44 drives the unloading push plate 47 to be inserted under the strong magnet 1 along the width direction of the conveyor belt 231 (in this process, the second spring 64 accumulates elastic potential energy). During the process of the unloading push plate 47 being inserted under the strong magnet 1, the tenon 61 can abut against the wedge surface 621 and make the sliding pin 62 slide vertically downward, so that the tenon 61 can pass over the position of the sliding pin 62; during the process of the unloading push plate 47 being pulled out from under the strong magnet 1 along the width direction of the conveyor belt 231, the tenon 61 abuts against the back side of the wedge surface 621, so that the tenon 61 can pull the stirring paddle 561 away from the construction waste.

[0043] Therefore, the iron removal device for construction waste in road engineering provided in this embodiment can utilize the action of pulling the unloading push plate 47 away from under the strong magnet 1 to pull the stirring paddle 561 away from the construction waste, thereby preventing the stirring paddle 561 from interfering with the feeding action of the conveyor belt 231 in the next cycle (avoiding the stirring paddle 561 from obstructing the partition 232), and also utilizes the downward action of the strong magnet 1 to "unlock" the stirring paddle 561 locked by the tenon 61 on the side of the conveyor belt 231 facing the rotating drum 55, so that the stirring paddle 561 can be actually inserted into the construction waste in an appropriate manner.

[0044] It should be understood that, in the present application, "rotational setting" and "rotational installation" mean that the two can only rotate relative to each other. For example, the rotational setting of the hole and the shaft rod can achieve the limitation of axial relative movement by setting a shoulder on the shaft and a limit groove in the hole; the term "sliding connection" means that the two can only slide relative to each other, such as dovetail grooves, T-slots and other structures; the term "fixed sleeve" means that one is sleeved on the outside of the other, and the two are fixedly connected.

[0045] The specific implementation methods described above further illustrate the objectives, technical solutions and beneficial effects of the present invention in detail. It should be understood that the above description is only a specific implementation method of the present invention and is not intended to limit the scope of protection of the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.

Claims

1. An iron removal device for construction waste in road engineering, comprising a strong magnet (1), characterized in that: Also includes: A material feeding assembly, the material feeding assembly comprising a support platform (211), a drive motor (221) and a belt conveyor; A plurality of partitions (232) are fixedly arranged on the outer peripheral surface of the conveyor belt (231) of the belt conveyor, each of the partitions (232) is perpendicular to the outer surface of the conveyor belt (231) and perpendicular to the length direction of the conveyor belt (231), and each of the partitions (232) is evenly distributed along the length direction of the conveyor belt (231); The inner peripheral surface of the conveyor belt (231) located in the outbound section abuts against the table surface (214) of the support platform (211); the table surface (214) has two mutually parallel side baffles (212) extending upward, and the two side baffles (212) respectively abut against two sides of the conveyor belt (231); the strong magnet (1) is installed above the support platform (211); The drive motor (221) and the support platform (211) are fixedly connected, and the output shaft (222) of the drive motor (221) is parallel to the width direction of the conveyor belt (231); a first incomplete gear (24) is fixedly sleeved on the output shaft (222), and a first gear (25) meshing with the first incomplete gear (24) is fixedly sleeved on the shaft of the driving roller (233) of the belt conveyor; The belt conveyor is capable of conveying the construction waste loaded on one end of the driven roller (234) to one end of the driving roller (233); the first incomplete gear (24) enables the conveyor belt (231) to be intermittently fed to the bottom of the powerful magnet (1), and when the first gear (25) is stopped, the construction waste between two adjacent partitions (232) is located directly below the powerful magnet (1).

2. The iron removal device according to claim 1, characterized in that: The iron removal device also includes: A height adjustment component, wherein the height adjustment component is capable of adjusting the height position of the strong magnet (1).

3. The iron removal device according to claim 2, characterized in that: The height adjustment assembly comprises a second gear (31), a first crank (32), a first connecting rod (33), a support frame (34) and a first spring (35); The support frame (34) is fixedly mounted above the support platform (211), a sliding portion (11) is fixedly connected above the strong magnet (1), and the sliding portion (11) and the support frame (34) are slidably connected in a vertical direction; The first spring (35) is arranged vertically, and two ends of the first spring (35) are respectively connected to the strong magnet (1) and the support frame (34); The second gear (31) is rotatably disposed on the support platform (211) and meshes with the first incomplete gear (24); The first crank (32) and the second gear (31) are fixedly connected, one end of the first crank (32) away from the second gear (31) is hinged to the first connecting rod (33), and one end of the first connecting rod (33) away from the first crank (32) is hinged to the sliding part (11).

4. The iron removal device according to claim 3, characterized in that: During the rotation of the first incomplete gear (24), at least one of the first gear (25) and the second gear (31) stops; When the first incomplete gear (24) drives the second gear (31) to rotate, the strong magnet (1) performs reciprocating linear motion in the vertical direction, and when the second gear (31) stops, the first spring (35) causes the strong magnet (1) to be located at an upper limit position.

5. The iron removal device according to claim 3, characterized in that: The iron removal device also includes: A discharge assembly, the discharge assembly comprising a first bevel gear (41), a second bevel gear (42), a second incomplete gear (43), a third gear (44), a second crank (45), a second connecting rod (46) and a discharge push plate (47); The unloading push plate (47) and the support frame (34) are slidably connected along the width direction of the conveyor belt (231); The first bevel gear (41) is fixedly sleeved on the output shaft (222), the second bevel gear (42) is rotatably disposed on the support platform (211) with the rotating shaft parallel to the feeding direction of the conveyor belt (231), and the second bevel gear (42) is meshed with the first bevel gear (41); The second incomplete gear (43) and the second bevel gear (42) are coaxially fixedly connected, and the third gear (44) is rotatably disposed on the support platform (211) and meshes with the second incomplete gear (43); The second crank (45) and the third gear (44) are fixedly connected, one end of the second crank (45) away from the third gear (44) is hinged to the second connecting rod (46), and one end of the second connecting rod (46) away from the second crank (45) is hinged to the unloading push plate (47); When the second gear (31) stops, the upper surface of the unloading push plate (47) overlaps with the lower surface of the strong magnet (1), and the second incomplete gear (43) drives the third gear (44) to rotate, so that the unloading push plate (47) performs reciprocating linear motion along the width direction of the conveyor belt (231).

6. The iron removal device according to claim 5, characterized in that: A receiving groove (48) is fixedly connected below the discharge push plate (47), and the receiving groove (48) is capable of receiving the adsorbed matter scraped off from the strong magnet (1) by the discharge push plate (47) and guiding it to an external adsorbed matter collection bin.

7. The iron removal device according to claim 5, characterized in that: The iron removal device also includes: A stirring assembly, the stirring assembly comprising a fourth gear (51), a fifth gear (52), a rotating drum (55), a stirring rod (56), and a telescopic mechanism; The fourth gear (51) is fixedly sleeved on the output shaft (222); the rotating drum (55) is rotatably mounted on the support platform (211); and a fifth gear (52) meshing with the fourth gear (51) is fixedly sleeved on the rotating drum (55); The stirring rod (56) is inserted into the rotating drum (55), a stirring blade (561) is fixedly arranged at one end of the stirring rod (56) close to the conveyor belt (231), a through hole is provided on the side baffle (212) close to the rotating drum (55), a rotating plate (213) is rotatably arranged in the through hole, and a plug hole corresponding to the stirring blade (561) is provided on the rotating plate (213); A plurality of axial slide grooves (551) are provided on the peripheral wall of the rotating drum (55); a plurality of radially extending sliders (562) are fixedly provided on one end of the stirring rod (56) away from the conveyor belt (231); each of the sliders (562) is slidably connected to each of the slide grooves (551) in a one-to-one correspondence; a limit block (563) is also fixedly provided on the slider (562); the limit block (563) abuts against the peripheral wall of the rotating drum (55); The telescopic mechanism is capable of inserting the stirring blade (561) into the construction waste directly below the strong magnet (1) when the first gear (25) is stopped, and of withdrawing the stirring blade (561) before the construction waste leaves the area below the strong magnet (1).

8. The iron removal device according to claim 7, characterized in that: The telescopic mechanism comprises a tenon (61), a sliding pin (62), a guide groove (63), a second spring (64), a third spring (65), a fourth spring (66) and an unlocking lever (67); The two ends of the second spring (64) are respectively connected to the unloading push plate (47) and the support platform (211), and the tenon (61) and the unloading push plate (47) are fixedly connected; the guide groove (63) is rotatably mounted on the stirring rod (56) and the guide groove (63) does not rotate relative to the support platform (211), the sliding pin (62) and the guide groove (63) are slidably connected in the vertical direction, and the two ends of the third spring (65) are respectively connected to the sliding pin (62) and the guide groove (63); a wedge surface (621) is provided on the sliding pin (62), and the wedge surface (621) faces the side where the sliding block (562) is located, and an abutment portion (622) is also fixedly provided on the sliding pin (62); the two ends of the fourth spring (66) are respectively connected to the sliding block (562) and the rotating drum (55); the unlocking rod (67) and the strong magnet (1) are fixedly connected; When the first gear (25) rotates, the unloading push plate (47) and the stirring blade (561) are both located on the side of the conveyor belt (231) facing the rotating drum (55), and the tenon (61) abuts against the back side of the wedge-shaped surface (621), and the end of the unlocking rod (67) is located above the abutting portion (622); When the second gear (31) rotates after the first gear (25) stops, the strong magnet (1) performs reciprocating linear motion in the vertical direction, so that the unlocking rod (67) pushes the abutment portion (622) downward, thereby separating the sliding pin (62) and the tenon (61), and the stirring blade (561) is inserted into the construction waste directly below the strong magnet (1) under the action of the fourth spring (66); After the second gear (31) stops and before the first gear (25) rotates, the third gear (44) drives the unloading push plate (47) to be inserted under the strong magnet (1) along the width direction of the conveyor belt (231). During the process of the unloading push plate (47) being inserted under the strong magnet (1), the tenon (61) can abut against the wedge surface (621) and make the sliding pin (62) slide vertically downward, so that the tenon (61) can pass over the position of the sliding pin (62); during the process of the unloading push plate (47) being pulled out from under the strong magnet (1) along the width direction of the conveyor belt (231), the tenon (61) abuts against the back side of the wedge surface (621), so that the tenon (61) can pull the stirring blade (561) out of the construction waste.

9. The iron removal device according to claim 1, characterized in that: The iron removal device also includes a waste slag collection bin, which is located below an end of the conveyor belt (231) away from the driven roller (234).

10. The iron removal device according to claim 1, characterized in that: A plurality of circumferentially evenly distributed latching teeth are fixedly arranged on the outer circumferential surface of the active roller (233), and a plurality of latching grooves corresponding to the latching teeth are arranged on the inner circumferential surface of the conveyor belt (231).

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