Electric waste recovery treatment crusher for building construction

Abstract

The invention discloses an electric waste recovery treatment crusher for building construction. The electric waste recovery treatment crusher comprises a screening and filtering mechanism and a pre-crushing mechanism, the screening and filtering mechanism comprises two screening plates which are arranged in a V shape in the width direction, a gap is reserved between the bottoms of the two screening plates so that small waste blocks can fall off, and the two screening plates can vibrate so that large waste blocks can be shaken off into the pre-crushing mechanism; the pre-crushing mechanism comprises a crushing table and a pressing block, a plurality of vertical drill bits are arranged on the crushing table, the pressing block is arranged above the crushing table and slidably connected with the side wall of the crushing box, and the pressing block and the drill bits are connected through a transmission assembly, so that the pressing block slides up and down to drive the drill bits to rotate; and pressing of the pressing block and rotation of the drill bit are jointly used for pre-crushing large waste into small blocks. The waste crushing device is exquisite in design, reasonable in structure, easy to operate and convenient to use, waste of different specifications can be crushed, the equipment load is effectively reduced, the crushing efficiency is improved, the service life of equipment is prolonged, and cost input is saved.

Description

Technical Field

[0001] The present invention relates to the field of waste crushing and recycling, and in particular to an electric waste recycling and processing crusher for construction. Background Art

[0002] A large amount of waste is generated during construction, such as concrete fragments, bricks, stones, steel bars, etc. Construction waste mainly comes from the demolition of construction sites, the leftovers generated during the construction process, and the residues after construction completion. It has characteristics such as large volume, heavy weight, and complex classification, and specific equipment is required for crushing and recycling. If these wastes are not processed and recycled in time, they will cause serious pollution to the environment and waste a large amount of resources. Therefore, the crushing and recycling equipment for construction waste has become an important link in the development of the construction industry.

[0003] Existing crushers can, to a certain extent, complete the crushing work of construction waste, but there are also certain defects: there are many types of construction waste, with irregular shapes and different sizes. The conventional treatment process is to screen and classify waste of different sizes and then use crushers of different specifications for treatment respectively. However, arranging multiple crushers of different specifications at the construction site not only occupies the construction site, but also has a complicated treatment process and increases the purchase cost. Therefore, at the construction site, often as a second choice, only one crusher is used for treatment. However, large-sized crushers are likely to cause the waste not to be fully crushed, reducing the recycling efficiency and reuse rate. Small-sized crushers cannot process large pieces of waste. Even if they can barely crush, the equipment needs to run for a long time, resulting in excessive equipment load, problems such as equipment overheating or excessive wear, and reducing the service life of the crusher.

[0004] Therefore, how to create an electric waste recycling and processing crusher for construction that can perform hierarchical crushing of waste is one of the important current research topics. Summary of the Invention

[0005] The technical problem to be solved by the present invention is to provide an electric waste recycling and processing crusher for construction, which can perform hierarchical crushing of construction waste, meet the treatment requirements of waste of different specifications at the construction site, improve the waste treatment efficiency, save resources, reduce costs, and thus overcome the deficiencies of the prior art.

[0006] To solve the above technical problem, the present invention provides an electric waste recycling and processing crusher for construction, including a crushing box and a main crushing mechanism located inside the crushing box, and further including a screening mechanism and a pre-crushing mechanism; The screening mechanism is arranged at the inner top of the crushing box and includes two sieve plates arranged in a V shape in the width direction. There is a gap between the bottoms of the two sieve plates to allow small pieces of waste to fall. The two sieve plates can vibrate to shake large pieces of waste into the pre-crushing mechanism; The pre-crushing mechanism includes a crushing table and a pressing block. The top surface of the crushing table inclines towards the inside of the crushing box. A plurality of vertical drill bits are arranged on the crushing table. The pressing block is arranged above the crushing table and is slidably connected to the side wall of the crushing box. A plurality of spiky protrusions are provided at the bottom of the pressing block. The pressing block and the drill bits are connected by a transmission assembly, so that the up-and-down sliding of the pressing block can drive the rotation of the drill bits. The downward pressing of the pressing block and the rotation of the drill bits are jointly used to pre-crush large waste materials into small pieces.

[0007] As an improvement of the present invention, a support plate is fixedly connected to the top of the crushing box. A hydraulic cylinder is vertically installed above the straight plate. The push rod of the hydraulic cylinder penetrates through the support plate and is connected to the top of the pressing block for driving the vertical movement of the pressing block.

[0008] Further, the transmission assembly includes a toothed plate, a screw rod, a first gear and a second gear; A vertically penetrating sliding groove is formed in the side wall of the crushing box. The end of the pressing block passes through the sliding groove and is connected to the toothed plate located outside the side wall of the crushing box. A first rack is machined on one side of the toothed plate. An installation groove is formed in the crushing table along the width direction. The screw rod is installed in the groove through a bearing. The end of the screw rod extends out of the side wall of the crushing box and is fixedly installed with a first gear. A second gear is installed at the bottom of the drill bit. The first gear meshes with the first rack, and the screw rod meshes with the second gear; The pressing block drives the toothed plate to move up and down. The toothed plate drives the screw rod to rotate through the meshing of the first rack and the first gear. The screw rod drives the drill bit to rotate through the meshing with the second gear.

[0009] Further, the screening mechanism further includes a fixed shaft, a first sleeve, a second sleeve, a cam roller and a third gear; The fixed shaft is fixedly connected between the inner side walls of the two sides of the crushing box along the width direction. The cam roller is rotatably connected between the two side walls of the crushing box along the width direction through a bearing. The fixed shaft is located on the side away from the crushing table, and the cam roller is located on the side close to the crushing table; Both ends of the cam roller extend out of the side wall of the crushing box and are installed with a third gear. A second rack is machined on the edge of the side of the toothed plate facing the cam roller. The third gear meshes with the second gear for driving the cam roller to rotate by the toothed plate; Both ends of the sieve plate are respectively fixedly connected to the first sleeve and the second sleeve. The first sleeve is sleeved outside the fixed shaft, and the second sleeve is sleeved outside the cam roller. The rotation of the cam roller is used to drive the second sleeve to move and then drive the sieve plate to vibrate.

[0010] Further, the above-mentioned electric waste recycling and treatment crusher for construction also includes a rectifying mechanism. The rectifying mechanism includes a convex platform, a rectifying plate, a rectifying roller, a lead screw, a fourth gear and a fifth gear; A plurality of first movable grooves are formed in the crushing table, and the first movable grooves and the drill bits are distributed at intervals. The upper part of the convex platform is L-shaped, and the lower part has an inclined surface with the same slope as the crushing table. A second movable groove penetrating up and down is formed at the top of the convex platform, and a side groove is formed on the side. A third rack is arranged in the side groove. The convex platform is arranged at the first movable groove of the crushing table so that the second movable groove is aligned with the first movable groove; The alignment plate is slidably installed in the first movable groove and the second movable groove. The bottom of the alignment plate is threadedly connected to the lead screw. The lead screw is rotatably installed at the bottom of the installation groove of the crushing table. A fourth gear is fixedly connected to the lead screw near the bottom. The fourth gear meshes with the screw rod. The screw rod drives the alignment plate to lift through the fourth gear and the lead screw; The alignment roller is rotatably installed at the top of the alignment plate. A fifth gear is fixedly connected to the end of the alignment roller. The fifth gear is located in the side groove and meshes with the third rack, so that while the alignment plate is lifted, the alignment roller rotates along its own axis.

[0011] Furthermore, a dust-proof cover is arranged outside the toothed plate.

[0012] Furthermore, a baffle inclined inward is installed at the top of the crushing box.

[0013] Furthermore, the main crushing mechanism is two crushing rollers driven by a motor to rotate.

[0014] Furthermore, a discharge port is formed at the bottom of the side wall of the crushing box. A conveyor belt is arranged inside the crushing box below the main crushing mechanism. The end of the conveyor belt is located at the discharge port and is used to discharge the crushed waste out of the crushing box.

[0015] After adopting such a design, the present invention has at least the following advantages: 1. An electric waste recycling and processing crusher for construction uses provided by the present invention can effectively screen larger-sized waste and guide it to the top of the crushing table for pre-crushing, and then further refine the waste through the crushing rollers. The multi-stage crushing mode can flexibly handle waste of various sizes, effectively reduce the equipment load during the crushing process, and improve the crushing efficiency; 2. An electric waste recycling and processing crusher for construction uses described in the present invention can ensure that large pieces of waste are more uniform and thorough during pre-crushing through the setting of the alignment mechanism, ensure that the waste reaches the ideal specification during the final crushing process, and avoid the problem that larger-sized waste is difficult to completely process; 3. Simple operation, convenient use, simplified processing procedures, no need to classify and screen waste in advance, saving labor and equipment cost investment, and saving resources. Description of the Drawings

[0016] The above is only an overview of the technical solution of the present invention. In order to better understand the technical means of the present invention, the following provides a more detailed description of the present invention in conjunction with the accompanying drawings and specific embodiments.

[0017] Figure 1 It is a three-dimensional structure schematic diagram of the present invention; Figure 2 It is a three-dimensional structure schematic diagram of the present invention in the state of removing the dust cover; Figure 3 It is a sectional three-dimensional structure schematic diagram of the present invention; Figure 4 It is a three-dimensional structure schematic diagram of the sieve filtering mechanism in the present invention; Figure 5 It is a three-dimensional structure schematic diagram of the pre-crushing mechanism in the present invention; Figure 6 It is a three-dimensional structure schematic diagram of the crushing table in the present invention; Figure 7 It is a three-dimensional structure schematic diagram of the screw and the drill bit in the present invention; Figure 8 It is an exploded three-dimensional structure schematic diagram of the alignment mechanism in the present invention.

[0018] Explanation of reference numerals: 1, crushing box; 11, discharge port; 12, support plate; 13, baffle; 14, dust cover; 2, crushing roller; 3, conveyor belt; 4, sieve filtering mechanism; 41, sieve plate; 42, fixed shaft; 43, first sleeve; 44, second sleeve; 45, cam roller; 46, third gear; 5, pre-crushing mechanism; 51, crushing table; 511, installation groove; 512, first moving groove; 52, pressing block; 53, hydraulic cylinder; 54, drill bit; 55, screw; 56, toothed plate; 561, first rack; 562, second rack; 57, first gear; 58, second gear; 6, alignment mechanism; 61, convex platform; 611, second moving groove; 612, side groove; 613, third rack; 62, alignment plate; 63, lead screw; 64, fourth gear; 65, alignment roller; 66, fifth gear. Specific embodiments

[0019] Please refer to Figures 1 to 3 , the present invention provides an electric waste recycling and processing crusher for construction, including a crushing box 1, a main crushing mechanism, a sieve filtering mechanism 4, a pre-crushing mechanism 5 and an alignment mechanism 6.

[0020] The crushing box 1 is a box body with an open top, and its internal space is used for crushing waste. A main crushing mechanism is arranged inside the crushing box 1. In this embodiment, the main crushing mechanism is two crushing rollers 2 driven by a motor, and there is a narrow gap between the two crushing rollers 2. The two crushing rollers 2 rotate towards each other to crush the waste located in the gap.

[0021] A discharge port 11 is provided at the side wall of the crushing box 1 near the bottom. A conveyor belt 3 is arranged below the main crushing mechanism, and the end of the conveyor belt 3 is located at the discharge port 11 for discharging the crushed waste out of the crushing box 1.

[0022] A support plate 12 is fixedly connected to the top of one side of the crushing box 1 to provide support for the hydraulic cylinder 53 in the pre-crushing mechanism 5. A baffle 13 that inclines inward is installed at the top of the other side of the crushing box 1 to guide the waste into the crushing box 1.

[0023] Please refer to Figure 3 、 Figure 5 、 Figure 6 and Figure 7 The pre-crushing mechanism 5 is arranged at the top near one side of the crushing box 1 and includes a crushing table 51, a pressing block 52, a hydraulic cylinder 53, and a drill bit 54.

[0024] The top surface of the crushing table 51 inclines towards the inside of the crushing box 1, and a plurality of vertical drill bits 54 are installed at intervals along the width direction on the crushing table 51. Specifically, an installation groove 511 is formed in the crushing table 51 in the width direction, the bottom of the drill bit 54 is rotatably installed at the bottom of the installation groove 511, and the top extends beyond the top surface of the crushing table 51.

[0025] The pressing block 52 is arranged directly above the crushing table 51, and a plurality of spike-shaped protrusions are provided at the bottom. In this embodiment, the spike-shaped protrusions are arranged at intervals along the width direction and are staggered with the positions of the drill bits 54.

[0026] The cylinder body of the hydraulic cylinder 53 is vertically installed on the support plate 12, and the push rod passes through the support plate 12 and is fixedly connected to the top of the pressing block 52. The hydraulic cylinder 53 is used to drive the pressing block 52 to move up and down in the vertical direction. The pressing block 52 and the drill bit 54 are connected by a transmission component, so that when the pressing block 52 moves up and down, it can drive the drill bit 54 to rotate. The pressing block 52 presses down and cooperates with the rotation of the drill bit 54 to pre-crush large pieces of waste into small pieces.

[0027] Specifically, the transmission component includes a screw rod 55, a toothed plate 56, a first gear 57, and a second gear 58.

[0028] A through groove that penetrates inside and outside is formed in the side wall of the crushing box 1. The end of the pressing block 52 is processed into a narrow strip shape and passes through the through groove to be fixedly connected to the toothed plate 56 located outside the crushing box 1. The through groove is vertically formed, so that the pressing block 52 can drive the toothed plate 56 closely attached to the outside of the crushing box 1 to slide up and down.

[0029] The toothed plate 56 is wide at the top and narrow at the bottom. The upper part is fixedly connected to the pressing block 52, and first rack teeth 561 and second rack teeth 562 are respectively processed at the two side edges of the lower part. The first rack teeth 561 are used to transmit power to the drill bit 54, and the second rack teeth 562 are used to transmit power to the screening mechanism 4.

[0030] A screw rod 55 horizontally arranged in the width direction is installed in the installation groove 511 of the crushing table 51 through bearings. The two ends of the screw rod 55 penetrate through the side wall of the crushing box 1 and extend outside the crushing box 1. First gears 57 are fixedly installed at the two ends of the screw rod 55. The first gears 57 are engaged with the first rack 561 on the toothed plate 56. A second gear 58 is installed near the bottom of the drill bit 54. The second gear 58 is engaged with the screw rod 55.

[0031] When the toothed plate 56 moves up and down, the rotation of the screw rod 55 is driven by the engagement of the first rack 561 and the first gear 57, and then the rotation of the drill bit 54 is driven by the engagement of the screw rod 55 and the second gear 58.

[0032] In this embodiment, a dust-proof cover 14 is arranged outside the toothed plate 55. The dust-proof cover 14 is connected to the outer wall of the crushing box 1 to prevent dust from entering and affecting the transmission.

[0033] Please refer to Figure 2 and Figure 4 , the screening mechanism 4 is arranged inside the crushing box 1. Its function is to screen the waste materials, so that small pieces of crushed materials directly fall into the main crushing mechanism, and the large pieces of waste materials are shaken into the pre-crushing mechanism 5.

[0034] The screening mechanism 4 includes a sieve plate 41, a fixed shaft 42, a first sleeve 43, a second sleeve 44, a cam roller 45 and a third gear 46.

[0035] The number of the sieve plates 41 is two. The two sieve plates 41 are arranged oppositely and both are inclined towards the inside of the crushing box 1. They are arranged in a V shape in the width direction and there is a gap between the bottoms. Small pieces of waste materials can directly fall into the main crushing mechanism from the gap.

[0036] The two ends of the sieve plate 41 in the length direction are fixedly connected to the first sleeve 43 and the second sleeve 44 respectively. The first sleeve 43 and the second sleeve 44 are both hollow tubes.

[0037] The fixed shaft 42 is fixedly connected between the inner walls on both sides of the crushing box 1 in the width direction. The cam roller 45 is rotatably connected between the two side walls of the crushing box 1 through bearings in the width direction. The fixed shaft 42 is located on the side away from the crushing table 51, and the cam roller 45 is located on the side close to the crushing table 51.

[0038] The roller body of the cam roller 45 is processed into a cam shape, and the two ends are regular circles. The ends of the cam roller 45 penetrate through the side wall of the crushing box 1 and extend outside the crushing box 1, and a third gear 46 is installed.

[0039] One side edge of the toothed plate 56 facing the cam roller 45 is machined with a second rack 562, and the second rack 562 meshes with the third gear 46. When the toothed plate 56 moves up and down, it drives the cam roller 55 to rotate.

[0040] The first sleeve 43 is sleeved on the fixed shaft 42, and the second sleeve 44 is sleeved on the cam roller 45. When the cam roller 45 rotates, the roller body continuously stirs the second sleeve 44, causing the sieve plate 41 to vibrate bumpily, thereby shaking off large pieces of waste to the pre-crushing mechanism 5.

[0041] Please refer to Figure 6 and Figure 8 The alignment mechanism 6 includes a boss 61, an alignment plate 62, a lead screw 63, a fourth gear 64, an alignment roller 65 and a fifth gear 66.

[0042] The boss 61 is arranged on the top of the crushing table 51 and is located between two adjacent drill bits 54.

[0043] Specifically, a plurality of first movable grooves 512 are formed on the crushing table 51, and the first movable grooves 512 are distributed at intervals from the drill bits 54. The upper part of the boss 61 is L-shaped, and the lower part has an inclined surface with the same slope as the top surface of the pre-crushing table 51. The boss 61 is installed at the movable grooves 512 one by one and is in close fit with the crushing table 51.

[0044] The top of the boss 61 is provided with a second movable groove 611 that penetrates up and down, and a side groove 612 is formed on the side. A third rack 613 is arranged in the side groove 612. After installation, the second movable groove 611 is exactly aligned with the first movable groove 512 on the crushing table 51.

[0045] The alignment plate 62 is slidably installed in the first movable groove 512 and the second movable groove 611. The bottom of the alignment plate 62 is threadedly connected to the lead screw 63. The lead screw 63 is rotatably installed at the bottom of the installation groove 511 of the crushing table 51. A fourth gear 64 is fixedly connected to the lead screw 63 near the bottom. The fourth gear 64 meshes with the screw rod 55. When the screw rod 55 rotates, it can drive the alignment plate 62 to move up and down.

[0046] The alignment roller 65 is rotatably installed on the top of the alignment plate 62. A fifth gear 66 is fixedly connected to the end of the alignment roller 65. The fifth gear 66 is located in the side groove 612 and meshes with the third rack 613. While the alignment plate 62 moves up and down, the alignment roller 65 rotates along its own axis.

[0047] The function of the alignment mechanism 6 is to lift and push large pieces of waste towards the drill bits 54, preventing the waste from getting stuck between two adjacent drill bits 54 and unable to complete the pre-crushing process smoothly.

[0048] The working principle of the present invention is as follows: When in use, the staff first gradually pour the waste materials from the top of the crushing box 1 and start the hydraulic cylinder 53. The hydraulic cylinder 53 drives the pressing block 52 and the toothed plate 56 to reciprocate up and down. The toothed plate 56 drives the cam roller 45 to rotate through the meshing of the second rack 562 and the third gear 46. The roller body of the cam roller 45 repeatedly toggles the second sleeve 44, causing the sieve plate 41 to vibrate bumpily, shaking the large waste materials into the pre-crushing mechanism 2, while the small waste materials directly fall into the main crushing mechanism from the gaps at the bottom of the sieve plate 41.

[0049] At the same time, the reciprocating up and down movement of the toothed plate 56 drives the screw rod 55 to rotate through the meshing of the first rack 561 and the first gear 57. The screw rod 55 then drives the drill bit 54 to rotate through meshing with the second gear 58. The large waste materials are pre-crushed into small pieces under the combined action of the pressing block 52 and the drill bit 54.

[0050] Moreover, the screw rod 5 drives the lead screw 63 to rotate through meshing with the fourth gear 64, thereby driving the alignment plate 62 to rise. While the alignment plate 62 rises, the toggling roller 65 rotates. The alignment plate 62 can lift the waste materials and, through the rotation of the toggling roller 65, deflect them directly above the drill bit 54, enabling the large waste materials to be fully pre-crushed and preventing them from getting stuck between adjacent drill bits 4.

[0051] After the large waste materials are pre-crushed into small pieces, they also fall into the main crushing mechanism for secondary crushing. After crushing, all the waste materials are discharged from the discharge port 11 through the conveyor belt 3.

[0052] The present invention is exquisitely designed, reasonably structured, simple to operate, and convenient to use. It can crush waste materials of different specifications at the construction site. In particular, the multi-stage crushing of large waste materials effectively reduces the equipment load, improves the crushing efficiency, extends the service life of the equipment, and saves cost investment.

[0053] The above are only the preferred embodiments of the present invention, and do not impose any form of limitation on the present invention. Any simple modifications, equivalent changes, or decorations made by those skilled in the art using the disclosed technical content all fall within the protection scope of the present invention.

Claims

1. An electric waste recycling crusher for construction, comprising a crushing box and a main crushing mechanism located inside the crushing box, characterized in that: It also includes a screening mechanism and a pre-crushing mechanism; The screening mechanism is arranged at the top of the crushing box, and includes two screen plates arranged in a V shape in the width direction, with a gap between the bottoms of the two screen plates to allow small pieces of waste to fall, and the two screen plates can vibrate to shake off large pieces of waste into the pre-crushing mechanism; The pre-crushing mechanism includes a crushing table and a pressing block. The top surface of the crushing table is inclined toward the inside of the crushing box. A plurality of vertical drill bits are arranged on the crushing table. The pressing block is arranged above the crushing table and is slidably connected to the side wall of the crushing box. A plurality of spike-like protrusions are arranged at the bottom of the pressing block. The pressing block and the drill bit are connected by a transmission assembly so that the pressing block can drive the drill bit to rotate by sliding up and down. The downward pressure of the pressing block and the rotation of the drill bit are used together to pre-crush large pieces of waste into small pieces.

2. The electric waste recycling crusher for construction according to claim 1, characterized in that: A support plate is fixedly connected to the top of the crushing box, a hydraulic cylinder is vertically installed above the straight plate, and a push rod of the hydraulic cylinder penetrates the support plate and is connected to the top of the pressing block to drive the pressing block to move vertically.

3. The electric waste recycling crusher for construction according to claim 1, characterized in that: The transmission assembly includes a gear plate, a screw rod, a first gear and a second gear; The side wall of the crushing box is provided with a vertical slide groove which penetrates inside and outside, the end of the pressing block passes through the slide groove and is connected with a tooth plate located outside the side wall of the crushing box, a first rack is processed on one side of the tooth plate, the crushing table is provided with a mounting groove along the width direction, a screw is installed in the groove through a bearing, the end of the screw extends out of the side wall of the crushing box and is fixedly installed with a first gear, a second gear is installed at the bottom of the drill bit, the first gear is meshed with the first rack, and the screw is meshed with the second gear; The pressing block drives the toothed plate to move up and down, the toothed plate is engaged with the first gear through the first rack to drive the screw to rotate, and the screw is engaged with the second gear to drive the drill bit to rotate.

4. The electric waste recycling crusher for construction according to claim 3, characterized in that: The screening mechanism also includes a fixed shaft, a first sleeve, a second sleeve, a cam roller and a third gear; The fixed shaft is fixedly connected between the inner walls of both sides of the crushing box along the width direction, and the cam roller is rotatably connected between the inner walls of both sides of the crushing box through the bearing along the width direction. The fixed shaft is located on the side away from the crushing table, and the cam roller is located on the side close to the crushing table. The two ends of the cam roller extend out of the side wall of the crushing box and are installed with a third gear, and the edge of the toothed plate facing the cam roller is processed with a second rack, and the third gear is meshed with the second gear to enable the toothed plate to drive the cam roller to rotate; The two ends of the sieve plate are fixedly connected to the first sleeve and the second sleeve respectively. The first sleeve is sleeved outside the fixed shaft, and the second sleeve is sleeved outside the cam roller. The rotation of the cam roller is used to move the second sleeve and then drive the sieve plate to vibrate.

5. The electric waste recycling crusher for construction according to claim 3, characterized in that: It also includes a correction mechanism, which includes a boss, a correction plate, a correction roller, a screw rod, a fourth gear and a fifth gear; The crushing table is provided with a plurality of first movable grooves, which are spaced apart from the drill bit. The upper portion of the boss is L-shaped, and the lower portion has an inclined surface with the same slope as the crushing table. The top of the boss is provided with a second movable groove which runs through from top to bottom, and a side groove is provided on the side. A third rack is provided in the side groove. The boss is arranged at the first movable groove on the crushing table so that the second movable groove is aligned with the first movable groove. The adjusting plate is slidably installed in the first movable groove and the second movable groove, the bottom of the adjusting plate is threadedly connected to the screw rod, the screw rod is rotatably installed at the bottom of the crushing table installation groove, the screw rod is fixedly connected to the fourth gear near the bottom, the fourth gear is meshed with the screw rod, and the screw rod drives the adjusting plate to rise and fall through the fourth gear and the screw rod; The straightening roller is rotatably mounted on the top of the straightening plate, and the end of the straightening roller is fixedly connected to the fifth gear, which is located in the side groove and meshes with the third rack, so that the straightening roller rotates along its own axis while the straightening plate is raised and lowered.

6. The electric waste recycling crusher for construction according to claim 3, characterized in that: A dust cover is arranged outside the tooth plate.

7. The electric waste recycling crusher for construction according to claim 1, characterized in that: The top of the crushing box is provided with a baffle plate inclined inwardly.

8. The electric waste recycling crusher for construction according to claim 1, characterized in that: The main crushing mechanism is two crushing rollers driven to rotate by a motor.

9. The electric waste recycling crusher for construction according to claim 1, characterized in that: A discharge port is provided on the side wall of the crushing box near the bottom, and a conveyor belt is arranged inside the crushing box below the main crushing mechanism, with the end of the conveyor belt located at the discharge port for discharging crushed waste materials out of the crushing box.

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