Construction waste crushing device

Abstract

The utility model provides a construction waste crushing device, and relates to the technical field of crushing devices.The construction waste crushing device comprises a shell, a feeding opening is formed in the top of the shell, a material guiding assembly, a crushing assembly and a mounting assembly are sequentially arranged in the shell from top to bottom, an adjusting assembly is arranged on the crushing assembly, and a screen is arranged on the mounting assembly; a material returning assembly is arranged on the side portion of the shell, and a discharging pipe is arranged at the bottom of the shell in a communicating mode. Through the material guiding assembly, after the gap between the first crushing roller and the second crushing roller is changed, the construction waste can fall between the first crushing roller and the second crushing roller, and the construction waste can be crushed conveniently; through the adjusting assembly, the gap between the first crushing roller and the second crushing roller can be adjusted according to actual use requirements, so that the construction waste is crushed into different particle sizes, and the applicability of the device is improved; and through the mounting assembly, the screen meshes with different hole diameters can be conveniently disassembled, assembled and replaced, so that the crushing requirements of the construction waste with different particle sizes are met.

Description

Technical Field

[0001] The present application relates to the technical field of crushing devices, and in particular to a construction waste crushing device. Background Art

[0002] Construction waste refers to the slag, abandoned soil, abandoned materials, silt and other wastes generated during the construction, laying, demolition and repair of various buildings, structures, pipelines, etc. by construction units or individuals. At present, construction waste can be added to cement production, so that construction waste resources can be recycled and reused; construction waste needs to be crushed before being added to cement materials. The two crushing rollers inside the existing crushing devices are mostly set to a fixed gap. The gap between the two crushing rollers cannot be adjusted according to actual use requirements to crush the construction waste into different particle sizes, and the device has poor applicability. Summary of the invention

[0003] The purpose of the embodiments of the present application is to provide a construction waste crushing device, which can solve the technical problem that the two crushing rollers inside the existing crushing devices are mostly set to a fixed gap, the gap between the two crushing rollers cannot be adjusted according to actual use requirements to crush the construction waste into different particle sizes, and the device has poor applicability.

[0004] The present application provides a construction waste crushing device, comprising a shell, a feed inlet is provided at the top of the shell, a material guide assembly, a crushing assembly and a mounting assembly are sequentially arranged inside the shell from top to bottom, an adjustment assembly is arranged on the crushing assembly, a screen is arranged on the mounting assembly, a return assembly is arranged on the side of the shell, and a discharge pipe is arranged at the bottom of the shell;

[0005] The crushing assembly comprises a first crushing roller and a second crushing roller, and the adjusting assembly is used for driving the first crushing roller to approach or move away from the second crushing roller.

[0006] Among them, the material guide assembly includes a first material guide plate, a second material guide plate, a first screw and a first slider, the first material guide plate is rotatably set at the inner top end of the shell, the second material guide plate is fixedly set at the inner top end of the shell, the first material guide plate is provided with a first slide groove, the first screw thread penetrates the shell, the first slider is fixedly set at one end of the first screw, and the first slider is slidably connected to the first slide groove.

[0007] The crushing assembly further includes a first rotating shaft, a second rotating shaft, a first motor and a second motor. The first motor drives the first crushing roller to rotate via the first rotating shaft, and the second motor drives the second crushing roller to rotate via the second rotating shaft.

[0008] In which, the adjusting component includes a second slider, a third motor, a second screw, a sliding rod, a first mounting plate and two second mounting plates, the second mounting plate is fixedly arranged on the outer end of the shell, the second screw is rotatably arranged between the two second mounting plates through a bearing, the sliding rod is fixedly arranged between the two second mounting plates, the first mounting plate is threadedly sleeved on the second screw, and the first mounting plate is slidably sleeved on the sliding rod, the shell is provided with a second slide groove and a through hole, the second slider is limitedly slidably connected to the second slide groove, one end of the first rotating shaft is rotatably connected to the second slider through a bearing, and the other end of the first rotating shaft passes through the through hole and is connected to the first motor, and the first motor is fixedly arranged on the first mounting plate, and the second motor is fixedly arranged on the outer end of the shell.

[0009] Wherein, the mounting assembly includes a mounting frame, a mounting block and a spring, the mounting block is fixedly arranged at the inner end of the shell, the mounting frame is inclined above the mounting block, the spring is pre-stressed between the mounting block and the mounting frame, the mounting frame is provided with a slot, and the screen can be movably inserted in the slot.

[0010] Among them, the return material assembly includes a return material box, a fourth motor and an auger, the return material box is fixedly arranged on the side of the shell, the auger is rotatably arranged in the return material box through a bearing, the fourth motor drives the auger to rotate, and a discharge port is opened on the side of the shell, and the discharge port is connected to the return material box. A return material pipe is connected to the top end of the side of the return material box, and the return material pipe is located above the feed port.

[0011] Wherein, a handle is fixedly provided at the other end of the first screw rod.

[0012] Wherein, a dustproof brush is fixedly arranged in the through hole.

[0013] The shell is provided with a third slide groove, the installation frame is fixedly provided with a third slider, and the third slider is limitedly slidably connected with the third slide groove.

[0014] A feed hopper is fixedly provided at the upper end of the shell, the feed hopper is communicated with the feed port, a cover plate is provided on the side of the shell, and a support leg is fixedly provided at the lower end of the shell.

[0015] Beneficial effects of the utility model:

[0016] The utility model provides a construction waste crushing device. When in use, the first crushing roller is driven to approach or move away from the second crushing roller through the adjusting component until the gap between the first crushing roller and the second crushing roller reaches the target distance, and the screen with the target aperture size is installed on the installation component, and then the construction waste is added into the shell through the feed inlet. Under the guidance of the material guide component, the construction waste falls into the middle of the first crushing roller and the second crushing roller. After being crushed by the crushing component, the construction waste falls onto the screen. The construction waste with a smaller aperture than the screen passes through the screen and is discharged from the shell through the discharge pipe, and the construction waste with a larger aperture than the screen passes through the discharge pipe. The return material component is re-added into the shell through the feed port to re-participate in crushing; the device is provided with a material guide component, so that when the gap between the first crushing roller and the second crushing roller is changed, the construction waste can fall between the first crushing roller and the second crushing roller, so as to facilitate the crushing of the construction waste; the device is provided with an adjustment component, so that the gap between the first crushing roller and the second crushing roller can be adjusted according to actual use requirements to crush the construction waste into different particle sizes, thereby improving the applicability of the device; the device is provided with an installation component, so as to facilitate the disassembly and replacement of screens with different aperture sizes to adapt to the crushing requirements of construction waste with different particle sizes. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings required for use in the embodiments will be briefly introduced below. It should be understood that the following drawings only show certain embodiments of the present application and therefore should not be regarded as limiting the scope. For ordinary technicians in this field, other related drawings can be obtained based on these drawings without paying creative work.

[0018] Figure 1 It is a schematic diagram of the overall front view cross-sectional structure in some embodiments of the present application;

[0019] Figure 2 It is a schematic diagram of the overall front view structure of some embodiments of the present application;

[0020] Figure 3 It is a schematic diagram of the top view of the crushing assembly and the adjusting assembly in some embodiments of the present application;

[0021] Figure 4 It is a schematic diagram of the top view of the installation frame and the screen in some embodiments of the present application;

[0022] Figure 5 for Figure 1 Schematic diagram of the enlarged structure at point A.

[0023] The reference numerals are:

[0024] 1. Shell; 11. Feed port; 12. Discharge pipe; 13. Second chute; 14. Through hole; 15. Discharge port; 16. Dust-proof brush; 17. Third chute; 18. Feed hopper; 19. Cover plate; 110. Support leg;

[0025] 2. material guide assembly; 21. first material guide plate; 22. second material guide plate; 23. first screw rod; 24. first slider; 25. first slide groove; 26. handle;

[0026] 3. Crushing assembly; 31. First crushing roller; 32. Second crushing roller; 33. First rotating shaft; 34. Second rotating shaft; 35. First motor; 36. Second motor;

[0027] 4. Mounting assembly; 41. Screen; 42. Mounting frame; 43. Mounting block; 44. Spring; 45. Slot; 46. Third slider;

[0028] 5. Adjustment assembly; 51. Second slider; 52. Third motor; 53. Second screw rod; 54. Sliding rod; 55. First mounting plate; 56. Second mounting plate;

[0029] 6. Return material assembly; 61. Return material box; 62. Fourth motor; 63. Auger; 64. Return material pipe. DETAILED DESCRIPTION

[0030] In order to make the purpose, technical solution and advantages of the embodiments of the present application clearer, the technical solution in the embodiments of the present application will be clearly and completely described below in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments are part of the embodiments of the present application, rather than all the embodiments. The components of the embodiments of the present application described and shown in the drawings here can be arranged and designed in various different configurations.

[0031] Therefore, the following detailed description of the embodiments of the present application provided in the accompanying drawings is not intended to limit the scope of the present application for which protection is sought, but merely represents selected embodiments of the present application. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in the field without creative work are within the scope of protection of the present application.

[0032] It should be noted that similar reference numerals and letters denote similar items in the following drawings, and therefore, once an item is defined in one drawing, further definition and explanation thereof is not required in subsequent drawings.

[0033] In the description of the present application, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. indicate positions or positional relationships based on the positions or positional relationships shown in the accompanying drawings, or the positions or positional relationships in which the product of the application is usually placed when in use. They are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific position, be constructed and operated in a specific position, and therefore cannot be understood as a limitation on the present application. In addition, the terms "first", "second", "third", etc. are only used to distinguish the description, and cannot be understood as indicating or implying relative importance.

[0034] In addition, the terms "horizontal", "vertical", "overhanging" and the like do not mean that the components are required to be absolutely horizontal or overhanging, but can be slightly tilted. For example, "horizontal" only means that its direction is more horizontal than "vertical", and does not mean that the structure must be completely horizontal, but can be slightly tilted.

[0035] In the description of this application, it should also be noted that, unless otherwise clearly specified and limited, the terms "set", "install", "connect", and "connect" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two elements. For ordinary technicians in this field, the specific meanings of the above terms in this application can be understood according to specific circumstances.

[0036] like Figures 1 to 3 As shown, the embodiment of the present application provides a construction waste crushing device, including a shell 1, a feed inlet 11 is opened on the top of the shell 1, and a material guide component 2, a crushing component 3 and a mounting component 4 are sequentially arranged inside the shell 1 from top to bottom, an adjustment component 5 is arranged on the crushing component 3, and a screen 41 is arranged on the mounting component 4, a return component 6 is arranged on the side of the shell 1, and a discharge pipe 12 is arranged at the bottom of the shell 1;

[0037] The crushing assembly 3 includes a first crushing roller 31 and a second crushing roller 32 , and the adjusting assembly 5 is used to drive the first crushing roller 31 to approach or move away from the second crushing roller 32 .

[0038] When in use, the first crushing roller 31 is first driven to approach or move away from the second crushing roller 32 through the adjustment component 5 until the gap between the first crushing roller 31 and the second crushing roller 32 reaches the target distance, and the screen 41 with the target aperture size is installed on the installation component 4, and then the construction waste is added into the shell 1 through the feed inlet 11. Under the guidance of the material guide component 2, the construction waste falls into the middle of the first crushing roller 31 and the second crushing roller 32. After being crushed by the crushing component 3, the construction waste falls on the screen 41. The construction waste with a smaller aperture than the screen 41 passes through the screen 41 and is discharged from the shell 1 through the discharge pipe 12. The construction waste with a larger aperture than the screen 41 passes through the return material component. 6 is re-added into the shell 1 through the feed port 11 to participate in crushing again; the device is provided with a material guide component 2, so that when the gap between the first crushing roller 31 and the second crushing roller 32 is changed, the construction waste can fall between the first crushing roller 31 and the second crushing roller 32, so as to facilitate the crushing of the construction waste; the device is provided with an adjustment component 5, so that the gap between the first crushing roller 31 and the second crushing roller 32 can be adjusted according to actual use requirements to crush the construction waste into different particle sizes, thereby improving the applicability of the device; the device is provided with an installation component 4, so as to facilitate the disassembly and replacement of screens 41 with different aperture sizes to adapt to the crushing requirements of construction waste with different particle sizes.

[0039] like Figure 1 and 5 As shown, in this embodiment, the material guide assembly 2 includes a first material guide plate 21, a second material guide plate 22, a first screw rod 23 and a first slider 24. The first material guide plate 21 is rotatably arranged at the inner top end of the shell 1, the second material guide plate 22 is fixedly arranged at the inner top end of the shell 1, the first material guide plate 21 is provided with a first slide groove 25, the first screw rod 23 threadedly penetrates the shell 1, the first slider 24 is fixedly arranged at one end of the first screw rod 23, and the first slider 24 is slidably connected to the first slide groove 25.

[0040] When in use, the first screw 23 is rotated. Under the threaded cooperation between the first screw 23 and the shell 1, the first screw 23 drives the first slider 24 to move left and right. Under the sliding cooperation between the first slider 24 and the first slide groove 25, the first slider 24 drives the first guide plate 21 to rotate to the target inclination angle, and then the construction waste is added into the shell 1 through the feed port 11. Under the guidance of the first guide plate 21 and the second guide plate 22, the construction waste falls into the middle of the first crushing roller 31 and the second crushing roller 32. The device is provided with a material guide component 2, so that when the gap between the first crushing roller 31 and the second crushing roller 32 changes, the construction waste can fall into the middle of the first crushing roller 31 and the second crushing roller 32, which is convenient for crushing the construction waste.

[0041] like Figures 1 to 3As shown, in this embodiment, the crushing assembly 3 also includes a first rotating shaft 33, a second rotating shaft 34, a first motor 35 and a second motor 36. The first motor 35 drives the first crushing roller 31 to rotate through the first rotating shaft 33, and the second motor 36 drives the second crushing roller 32 to rotate through the second rotating shaft 34. When in use, the first motor 35 is turned on to drive the first rotating shaft 33 to rotate, and the first rotating shaft 33 drives the first crushing roller 31 to rotate. The second motor 36 is turned on to drive the second rotating shaft 34 to rotate, and the second rotating shaft 34 drives the second crushing roller 32 to rotate. The first crushing roller 31 and the second crushing roller 32 cooperate to crush the construction waste.

[0042] like Figures 1 to 3 As shown, in this embodiment, the adjustment component 5 includes a second slider 51, a third motor 52, a second screw 53, a slide bar 54, a first mounting plate 55 and two second mounting plates 56, the second mounting plate 56 is fixedly arranged at the outer end of the shell 1, the second screw 53 is rotatably arranged between the two second mounting plates 56 through a bearing, the slide bar 54 is fixedly arranged between the two second mounting plates 56, the first mounting plate 55 is threadedly sleeved on the second screw 53, and the first mounting plate 55 is slidably sleeved on the slide bar 54, the shell 1 is provided with a second slide groove 13 and a through hole 14, the second slider 51 is limitedly slidably connected with the second slide groove 13, one end of the first rotating shaft 33 is rotatably connected with the second slider 51 through a bearing, and the other end of the first rotating shaft 33 passes through the through hole 14 and is connected to the first motor 35, and the first motor 35 is fixedly arranged on the first mounting plate 55, and the second motor 36 is fixedly arranged at the outer end of the shell 1.

[0043] When in use, the third motor 52 is turned on to drive the second screw 53 to rotate, the second screw 53 drives the first mounting plate 55 to move left and right, the first mounting plate 55 drives the first motor 35 to move left and right, the first motor 35 drives the first rotating shaft 33 to move left and right, the first rotating shaft 33 drives the first crushing roller 31 to move left and right to approach or move away from the second crushing roller 32, until the gap between the first crushing roller 31 and the second crushing roller 32 reaches the target distance, and at the same time, the first rotating shaft 33 drives the second sliding block 51 to move left and right; the first mounting plate 55 and the sliding rod 54 are used in conjunction with each other to guide and limit the first mounting plate 55; the second sliding block 51 and the second chute 13 are used in conjunction with each other to make the first rotating shaft 33 more stable and smooth when moving, thereby improving the stability of use; the device can adjust the gap between the first crushing roller 31 and the second crushing roller 32 according to actual use requirements by setting the adjustment component 5, so as to crush the construction waste into different particle sizes and improve the applicability of the device.

[0044] like Figure 1 and 4As shown, in this embodiment, the mounting assembly 4 includes a mounting frame 42, a mounting block 43 and a spring 44. The mounting block 43 is fixedly arranged at the inner end of the shell 1, and the mounting frame 42 is tilted above the mounting block 43. The spring 44 is pre-stressed between the mounting block 43 and the mounting frame 42. The mounting frame 42 is provided with a slot 45, and the screen 41 can be movably inserted in the slot 45.

[0045] When in use, the screen 41 of the target aperture size is inserted into the slot 45 and installed on the installation frame 42. The crushed construction waste falls onto the screen 41. Under the elastic force of the spring 44, the screen 41 vibrates up and down continuously. Construction waste smaller than the aperture of the screen 41 passes through the screen 41 and is discharged from the shell 1 through the discharge pipe 12. Construction waste larger than the aperture of the screen 41 rolls down along the inclined screen 41 under the action of gravity, and then is re-added to the shell 1 through the feed port 11 through the return component 6 to participate in crushing again; the device is convenient for disassembling and replacing screens 41 of different aperture sizes by setting the installation component 4 to adapt to the crushing requirements of construction waste of different particle sizes; the device is convenient for disassembling and replacing screens 41 of different aperture sizes by setting the spring 44, so that the screen 41 vibrates up and down continuously after being hit by the falling construction waste, which is conducive to the construction waste rolling down along the inclined screen 41 under the action of gravity.

[0046] like Figure 1 As shown, in this embodiment, the return material assembly 6 includes a return material box 61, a fourth motor 62 and an auger 63, the return material box 61 is fixedly arranged on the side of the shell 1, the auger 63 is rotatably arranged in the return material box 61 through a bearing, and the fourth motor 62 drives the auger 63 to rotate, and a discharge port 15 is opened on the side of the shell 1, and the discharge port 15 is connected to the return material box 61, and a return material pipe 64 is connected to the top end of the side of the return material box 61, and the return material pipe 64 is located above the feed port 11.

[0047] When in use, construction waste that is larger than the aperture of the screen 41 rolls down along the inclined screen 41 under the action of gravity, and then enters the return box 61 through the discharge port 15. The fourth motor 62 is turned on to drive the auger 63 to rotate. The auger 63 transports the construction waste to the top of the return box 61 and discharges it from the return box 61 through the return pipe 64. Then, it is re-added to the shell 1 through the feed port 11 and is crushed again.

[0048] like Figure 1 As shown, in this embodiment, a handle 26 is fixedly provided at the other end of the first screw rod 23; the handle 26 facilitates the staff to rotate the first screw rod 23, thereby improving the convenience of use.

[0049] like Figure 2 and 3As shown, in this embodiment, a dustproof brush 16 is fixedly provided in the through hole 14; the dustproof brush 16 can prevent smoke and dust in the shell 1 from escaping from the through hole 14, effectively protecting the environment and the health of the staff, and the dustproof brush 16 will not affect the normal movement of the first rotating shaft 33.

[0050] like Figure 1 As shown, in this embodiment, the shell 1 is provided with a third slide groove 17, and a third slider 46 is fixedly provided on the installation frame 42, and the third slider 46 is limitedly slidably connected with the third slide groove 17; the coordinated use of the third slider 46 and the third slide groove 17 makes the installation frame 42 more stable and smooth when vibrating up and down, thereby improving the stability of use.

[0051] like Figure 1 and 2 As shown, in this embodiment, a feed hopper 18 is fixedly provided at the upper end of the shell 1, and the feed hopper 18 is communicated with the feed port 11, a cover plate 19 is provided on the side of the shell 1, and a support leg 110 is fixedly provided at the lower end of the shell 1; the feed hopper 18 is convenient for adding construction waste into the shell 1; the staff can open the cover plate 19 to disassemble and replace the screen 41, thereby improving the convenience of use; the support leg 110 supports and protects the shell 1, thereby improving the stability of use.

[0052] Working principle: When the construction waste crushing device provided by the present application is used, the third motor 52 is first turned on to drive the second screw 53 to rotate, the second screw 53 drives the first mounting plate 55 to move left and right, the first mounting plate 55 drives the first motor 35 to move left and right, the first motor 35 drives the first rotating shaft 33 to move left and right, the first rotating shaft 33 drives the first crushing roller 31 to move left and right to approach or move away from the second crushing roller 32, until the gap between the first crushing roller 31 and the second crushing roller 32 reaches the target distance, and at the same time, the first rotating shaft 33 drives the second slider 51 to move left and right; and the screen 41 of the target aperture size is inserted into the slot 45 so as to be installed on the mounting frame 42; in addition, the handle 26 is turned to drive the first screw 23 to rotate, and under the thread cooperation of the first screw 23 and the shell 1, the first screw 23 drives the first slider 24 to move left and right, and under the sliding cooperation of the first slider 24 and the first slide 25, the first slider 24 drives the first guide plate 21 to rotate to the target inclination angle; then the construction waste is fed from the feed hopper 18 through the feed port 11 Add into the shell 1, under the guidance of the first guide plate 21 and the second guide plate 22, the construction waste falls into the middle of the first crushing roller 31 and the second crushing roller 32, the first motor 35 is turned on to drive the first shaft 33 to rotate, the first shaft 33 drives the first crushing roller 31 to rotate, the second motor 36 is turned on to drive the second shaft 34 to rotate, the second shaft 34 drives the second crushing roller 32 to rotate, the first crushing roller 31 and the second crushing roller 32 cooperate to crush the construction waste; under the elastic force of the spring 44, the screen 41 vibrates up and down continuously, and construction waste smaller than the aperture of the screen 41 passes through the screen 41 and is discharged from the shell 1 through the discharge pipe 12. Construction waste larger than the aperture of the screen 41 rolls down along the inclined screen 41 under the action of gravity, and then enters the return box 61 through the discharge port 15. The fourth motor 62 is turned on to drive the auger 63 to rotate, and the auger 63 transports the construction waste to the top of the return box 61 and discharges it from the return box 61 through the return pipe 64, and then re-enters the shell 1 through the feed port 11 to participate in crushing again.

[0053] The above are only preferred embodiments of the present application and are not intended to limit the present application. For those skilled in the art, the present application may have various modifications and variations. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application shall be included in the protection scope of the present application.

Claims

1. A construction waste crushing device, characterized in that: The invention comprises a shell (1), wherein a feed port (11) is provided at the top of the shell (1), a material guide assembly (2), a crushing assembly (3) and a mounting assembly (4) are arranged in sequence from top to bottom inside the shell (1), an adjustment assembly (5) is arranged on the crushing assembly (3), a screen (41) is arranged on the mounting assembly (4), a return assembly (6) is arranged on the side of the shell (1), and a discharge pipe (12) is arranged in communication with the bottom of the shell (1); The crushing assembly (3) comprises a first crushing roller (31) and a second crushing roller (32), and the adjusting assembly (5) is used to drive the first crushing roller (31) to move closer to or away from the second crushing roller (32).

2. The construction waste crushing device according to claim 1, characterized in that: The material guide assembly (2) comprises a first material guide plate (21), a second material guide plate (22), a first screw rod (23) and a first slider (24); the first material guide plate (21) is rotatably arranged at the inner top end of the shell (1); the second material guide plate (22) is fixedly arranged at the inner top end of the shell (1); the first material guide plate (21) is provided with a first slide groove (25); the first screw rod (23) is threadedly penetrated through the shell (1); the first slider (24) is fixedly arranged at one end of the first screw rod (23), and the first slider (24) is slidably connected to the first slide groove (25).

3. The construction waste crushing device according to claim 1, characterized in that: The crushing assembly (3) further comprises a first rotating shaft (33), a second rotating shaft (34), a first motor (35) and a second motor (36); the first motor (35) drives the first crushing roller (31) to rotate via the first rotating shaft (33); and the second motor (36) drives the second crushing roller (32) to rotate via the second rotating shaft (34).

4. The construction waste crushing device according to claim 3 is characterized in that: The adjusting assembly (5) comprises a second slider (51), a third motor (52), a second screw rod (53), a slide rod (54), a first mounting plate (55) and two second mounting plates (56), wherein the second mounting plate (56) is fixedly arranged at the outer end of the housing (1), the second screw rod (53) is rotatably arranged between the two second mounting plates (56) via a bearing, the slide rod (54) is fixedly arranged between the two second mounting plates (56), the first mounting plate (55) is threadedly sleeved on the second screw rod (53), and the first mounting plate (55) The sliding sleeve is arranged on the sliding rod (54), the housing (1) is provided with a second sliding groove (13) and a through hole (14), the second sliding block (51) is connected to the second sliding groove (13) in a limited sliding manner, one end of the first rotating shaft (33) is connected to the second sliding block (51) in rotation via a bearing, and the other end of the first rotating shaft (33) passes through the through hole (14) and is connected to the first motor (35), and the first motor (35) is fixedly arranged on the first mounting plate (55), and the second motor (36) is fixedly arranged on the outer end of the housing (1).

5. The construction waste crushing device according to claim 1, characterized in that: The mounting assembly (4) comprises a mounting frame (42), a mounting block (43) and a spring (44); the mounting block (43) is fixedly arranged at the inner end of the shell (1); the mounting frame (42) is tilted above the mounting block (43); the spring (44) is pre-pressed between the mounting block (43) and the mounting frame (42); the mounting frame (42) is provided with a slot (45); the screen (41) can be movably inserted into the slot (45).

6. The construction waste crushing device according to claim 1, characterized in that: The return material assembly (6) comprises a return material box (61), a fourth motor (62) and an auger (63); the return material box (61) is fixedly arranged on the side of the shell (1); the auger (63) is rotatably arranged in the return material box (61) through a bearing; the fourth motor (62) drives the auger (63) to rotate; a discharge port (15) is provided on the side of the shell (1); the discharge port (15) is communicated with the return material box (61); a return material pipe (64) is provided at the top end of the side of the return material box (61); and the return material pipe (64) is located above the feed port (11).

7. The construction waste crushing device according to claim 2, characterized in that: A handle (26) is fixedly provided at the other end of the first screw rod (23).

8. The construction waste crushing device according to claim 4, characterized in that: A dustproof brush (16) is fixedly arranged in the through hole (14).

9. The construction waste crushing device according to claim 5, characterized in that: The housing (1) is provided with a third sliding groove (17), and a third sliding block (46) is fixedly provided on the installation frame (42), and the third sliding block (46) is connected to the third sliding groove (17) in a limited sliding manner.

10. The construction waste crushing device according to claim 1, characterized in that: A feed hopper (18) is fixedly provided at the upper end of the shell (1), and the feed hopper (18) is connected to the feed port (11). A cover plate (19) is provided on the side of the shell (1), and a support leg (110) is fixedly provided at the lower end of the shell (1).

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