CN113649102A

CN113649102A - Building rubbish breaker

Info

Publication number: CN113649102A
Application number: CN202110878646.XA
Authority: CN
Inventors: 李帅
Original assignee: Beijing Ruihui Rujing Technology Co ltd
Current assignee: Beijing Ruihui Rujing Technology Co ltd
Priority date: 2021-07-31
Filing date: 2021-07-31
Publication date: 2021-11-16

Abstract

The invention discloses a construction waste crushing device, which comprises a crusher and a bucket elevator, wherein the crusher comprises a machine body, the top end of the machine body is provided with a feed hopper, a jaw crusher, a secondary crushing device, a screening device and a material receiving device are sequentially arranged in the machine body from top to bottom, wherein, broken machine of jaw is including deciding the jaw, move jaw and first motor, it has seted up the slot of trompil to move a jaw lateral wall, the bottom left and right sides that moves the jaw is fixed with the installation axle respectively, broken machine of jaw still includes the regulating plate, the regulating plate setting is in the bottom both sides that move the jaw and with the inner wall fixed connection of organism, the regulating plate horizontal direction is equipped with a plurality of regulation holes, installation axle and regulation hole normal running fit installation, the improvement of broken machine structure of jaw can effectual control building rubbish through the size after the broken machine of jaw, do benefit to second grade breaker's further breakage, adopt the broken mode of two-stage to make crushing effect better.

Description

Building rubbish breaker

Technical Field

The invention relates to the technical field of construction waste treatment equipment, in particular to a construction waste crushing device.

Background

Construction waste is mainly classified into five types: the solid waste and the construction waste become a chronic disease of social development along with the advance of urbanization process. In the prior art, the construction waste is required to be crushed in time in order to avoid the pollution of the construction waste to the environment.

The existing construction waste crushing equipment generally adopts a jaw crushing mode to crush the construction waste, the crushing is not thorough, the existing jaw crusher generally adopts an eccentric wheel to drive a movable jaw plate, the driving mode enables an outlet gear between the movable jaw plate and a static jaw plate to change intermittently, the size of the construction waste after jaw crushing is different, and the construction waste is not beneficial to further treatment; the existing construction waste crushing equipment is not thorough in crushing, the final crushing size cannot be effectively controlled, manual feeding is time-consuming and labor-consuming, and the working efficiency of construction waste crushing is influenced.

Disclosure of Invention

In order to solve the defects of the prior art, the invention aims to provide a construction waste crushing device to solve the technical problems in the background art.

In order to achieve the above purpose, the invention is realized by the following technical scheme: a construction waste crushing device comprises a crusher and a bucket elevator, wherein the crusher comprises a machine body, a feed hopper is arranged at the top end of the machine body, a jaw crusher, a secondary crushing device, a screening device and a material receiving device are sequentially arranged in the machine body from top to bottom, the jaw crusher comprises a fixed jaw plate, a movable jaw plate and a first motor, the fixed jaw plate is fixedly arranged in the machine body, the movable jaw plate and the fixed jaw plate are oppositely arranged, a crushing channel narrowing from top to bottom is formed between the fixed jaw plate and the movable jaw plate, the right side of the movable jaw plate is provided with an output end of a buffer cylinder through a hinge seat, the other end of the buffer cylinder is hinged and installed on the inner wall of the machine body, one side wall of the movable jaw plate is provided with a long circular hole groove, the left side and the right side of the bottom of the movable jaw plate are respectively and fixedly provided with installation shafts, the jaw crusher further comprises adjusting plates, the adjusting plates are arranged on the two sides of the bottom of the movable jaw plate and fixedly connected with the inner wall of the machine body, a plurality of adjusting holes are formed in the adjusting plate in the horizontal direction, and the mounting shaft is mounted in a rotating fit with the adjusting holes; first motor fixed mounting is in the lateral wall of organism, the output shaft fixed mounting of first motor has the rolling disc, one side eccentric settings that first motor was kept away from to the rolling disc has the drive shaft, the drive shaft inserts it offers to move a jaw lateral wall the long circular hole inslot, the drive shaft rotates and can drive and move the jaw back and forth oscillation, accomplishes the preliminary breakage to building rubbish. Wherein move the jaw and make to move the jaw bottom and keep motionless basically around its bottom both sides installation axle pivoted motion mode, control the displacement very little promptly, quiet jaw keeps unanimous basically with the export size that moves the jaw and form, can effectual control building rubbish through the size after the jaw breaker is broken, does benefit to second grade breaker's further breakage, avoids the great building rubbish of granule to pile up before second grade breaker, avoids second grade breaker card dead, excessive wearing and tearing.

Optionally, the opposite surfaces of the movable jaw plate and the fixed jaw plate are provided with wear-resistant layers, so that the service life of the movable jaw plate and the service life of the fixed jaw plate are prolonged.

Optionally, an elastic rubber sleeve is arranged on the inner wall of the adjusting hole, and the mounting shaft is arranged in the elastic rubber sleeve. The setting of elastic rubber cover makes the movable jaw board make the drive shaft have the surplus of rocking when receiving great impact, avoids the broken quick-witted card of jaw to die.

Optionally, the second-stage crushing device is arranged at the bottom end of the crushing channel and comprises a second motor and two crushing rollers, the second motor is fixedly installed on the outer side of the crusher body, an output shaft of the second motor is fixedly installed at one end of one crushing roller, and gears which are meshed with each other and are driven are fixedly installed at the other ends of the two crushing rollers respectively. The two crushing rollers rotate reversely to obtain better secondary crushing effect.

Optionally, screening plant includes the sieve structure, the sieve structure includes the screen cloth of both sides baffle, push pedal, returning face plate and bottom, the space that both sides baffle, push pedal, returning face plate constitute is used for accepting building rubbish after the secondary crushing device is smashed, the bottom of sieve structure is equipped with the slide rail, the slide rail is fixed in the organism inside wall, sieve structure left side sets up cam actuating mechanism, cam actuating mechanism includes third motor, shaft coupling, pivot and cam, third motor fixed mounting is in the organism lateral wall, the output shaft of third motor passes through shaft coupling fixed connection pivot, two cams of fixed mounting in the pivot, the cam with the left side of sieve structure offsets, cam actuating mechanism is used for driving the sieve structure is along the slide rail horizontal slip. The space that baffle, push pedal, returning face plate constitute in the sieve structure can accept the construction waste after the secondary crushing device is smashed completely, avoids unrestrained, and the motor has realized the effect screening of sieve structure high frequency with the cooperation of cam.

Optionally, still include canceling release mechanical system, canceling release mechanical system includes fixed connection in the first telescopic link on sieve structure right side, the right side fixed connection installation piece of first telescopic link, installation piece fixed connection the inside wall of organism, first telescopic link outside cover is equipped with first spring, just the both ends of first spring are fixed connection sieve structure and installation piece respectively. The reset mechanism realizes the automatic reset of the sieve plate structure by matching with the cam.

Optionally, the screening plant still drives actuating cylinder, the inside wall of the one end fixed connection organism that drives actuating cylinder, the output fixed connection who drives actuating cylinder the push pedal. Drive actuating cylinder drive push pedal right movement, will unable great building rubbish granule through the screen cloth and push down next process.

Optionally, the baffle is installed on the right side of the sieve plate structure, and the baffle is connected with the sieve mesh through a torsion spring. The baffle is vertical setting at initial state, and when the great building granule rubbish granule that the push pedal propelling movement can't pass through the screen cloth, the baffle overturns right under the effect of thrust to it is downward to incline under the effect of building granule gravity, makes great building rubbish granule get into next process.

Optionally, material collecting device includes first receipts storage bucket and second receipts storage bucket, first receipts storage bucket install in the bottom of sieve structure for accept the building rubbish through the screen cloth, the right side of first receipts storage bucket is located to the second receipts storage bucket, the inside of second receipts storage bucket is provided with the filter screen that the slope set up, just the bottom of second receipts storage bucket is provided with the blanking mouth, the blanking mouth with bucket elevator's feed inlet intercommunication. The second material receiving barrel is used for receiving large building garbage particles which cannot pass through the screen mesh on the screening device, the setting of the filter screen enables the building garbage particles which accord with the size standard to pass through and enter the bottom of the second material receiving barrel, and most of the building garbage particles pushed down by the push plate do not accord with the size standard, so that the large building garbage particles roll downwards along the inclined filter screen and enter the bottom of the bucket elevator through the feeding hole of the bucket elevator.

Optionally, one end of a conveyor belt is arranged on the bottom side of a discharge port of the bucket elevator, the conveyor belt is fixedly arranged at the top of the machine body, and the other end of the conveyor belt is arranged at the top of the feed hopper. The large building garbage particles are lifted by the bucket elevator, flow out from a discharge port of the bucket elevator, fall onto the conveyor belt, are conveyed by the conveyor belt, and then enter the crusher through the hopper, so that the circular crushing is realized.

Optionally, an elastic base is arranged at the bottom of the machine body and comprises a second telescopic rod and a second spring, the top end of the second telescopic rod is fixedly connected with the bottom end of the machine body, and two ends of the second spring are fixedly connected with the bottom end of the machine body and the bottom end of the second telescopic rod respectively. The elastic base is favorable for buffering the vibration generated by the whole crushing device during working, and the service life of the vibration device is prolonged.

The invention has the following beneficial effects:

1. the invention adopts a two-stage crushing mode to ensure that the crushing effect is better, firstly, the construction waste with a certain particle size is obtained through the primary crushing of the jaw crusher, and then, the construction waste is further crushed through the secondary crushing device, thus being beneficial to obtaining the construction waste particles meeting the standard.

2. According to the jaw crusher, the structure of the jaw crusher is improved, the mounting shafts are arranged on two sides of the bottom of the movable jaw plate, the bottom end of the movable jaw plate is basically kept still in the rotating process, building garbage is crushed by the aid of the top of the movable jaw plate swinging back and forth and matching with the static jaw plate, the sizes of outlets formed by the static jaw plate and the movable jaw plate are basically kept consistent, the sizes of the building garbage crushed by the jaw crusher can be effectively controlled, further crushing of a secondary crushing device is facilitated, building garbage with large particles is prevented from being accumulated in front of the secondary crushing device, and the secondary crushing device is prevented from being clamped and excessively worn.

3. The adjusting plate with the adjusting hole is arranged, so that the size of an outlet formed by the static jaw plate and the movable jaw plate can be adjusted, the size of the jaw crusher after primary crushing can meet different standard requirements, the jaw crusher can be suitable for construction wastes with different hardness and components, the static jaw plate and the movable jaw plate can be adjusted timely, and the service life is prolonged.

4. The screening device provided by the invention can screen out the construction waste with the size of the crushed construction waste, can push the construction waste with larger particle size to a recycling bin of the next process, is matched with a bucket elevator to realize circular feeding, and can repeatedly process the construction waste with the size not reaching the standard until the construction waste is completely crushed into the size smaller than or equal to the target particle size.

5. The invention is provided with the damping device, and the elastic base is arranged at the bottom of the whole crushing device, so that the vibration generated by the whole crushing device during working can be buffered, and the service life of the vibration device is prolonged.

6. The surfaces of the movable jaw plate and the static jaw plate are provided with the wear-resistant layers, so that the service life of the movable jaw plate and the service life of the static jaw plate are prolonged, and the movable jaw plate and the static jaw plate are of detachable structures and are convenient to replace after being damaged.

Drawings

FIG. 1 is a front view of the overall structure of the present invention;

FIG. 2 is a cross-sectional view of the overall construction of the present invention;

FIG. 3 is a cross-sectional view of the swing jaw of the present invention;

FIG. 4 is a left side view of the swing jaw of the present invention;

FIG. 5 is a front view of the screening device of the present invention;

figure 6 is a top view of the screening device of the present invention.

In the figure: 1. a crusher; 2. a bucket elevator; 3. a body; 4. a feed hopper; 5. a jaw fixing plate; 6. a movable jaw plate; 7. a first motor; 8. a hinged seat; 9. a long circular hole groove; 10. installing a shaft; 11. an adjusting plate; 12. an adjustment hole; 13. rotating the disc; 14. a drive shaft; 15. a wear layer; 16. a second motor; 17. a crushing roller; 18. a side dam; 19. pushing the plate; 20. a turnover plate; 21. screening a screen; 22. a slide rail; 23. a third motor; 24. a coupling; 25. a rotating shaft; 26. a cam; 27 a first telescopic rod; 28. mounting blocks; 29. a first spring; 30. a driving cylinder; 31. a first receiving barrel; 32. a second receiving barrel; 33. filtering with a screen; 34. a blanking port; 35. a feed inlet; 36. a discharge port; 37. a conveyor belt; 38 a second telescoping pole; 39. a second spring; 40. and a buffer cylinder.

Detailed Description

In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are some, but not all, embodiments of the present invention. The components of embodiments of the present invention generally described and illustrated in the figures herein may be arranged and designed in a wide variety of different configurations.

Thus, the following detailed description of the embodiments of the present invention, presented in the figures, is not intended to limit the scope of the invention, as claimed, but is merely representative of selected embodiments of the invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings or the orientations or positional relationships that the products of the present invention are conventionally placed in use, and are only used for convenience in describing the present invention and simplifying the description, but do not indicate or imply that the devices or elements referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention.

The terms "first," "second," and the like are used solely to distinguish one from another and are not to be construed as indicating or implying relative importance. The terms "parallel", "perpendicular", etc. do not require that the components be absolutely parallel or perpendicular, but may be slightly inclined. For example, "parallel" merely means that the directions are more parallel relative to "perpendicular," and does not mean that the structures are necessarily perfectly parallel, but may be slightly tilted.

Furthermore, the terms "substantially", and the like are intended to indicate that the relative terms are not necessarily strictly required, but may have some deviation. For example: "substantially equal" does not mean absolute equality, but because absolute equality is difficult to achieve in actual production and operation, certain deviations generally exist. Thus, in addition to absolute equality, "substantially equal" also includes the above-described case where there is some deviation. In this case, unless otherwise specified, terms such as "substantially", and the like are used in a similar manner to those described above.

In the description of the present invention, it should also be noted that, unless otherwise explicitly specified or limited, the terms "disposed," "mounted," "connected," and "connected" are to be construed broadly and may, for example, be fixedly connected, detachably connected, or integrally connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.

Referring to fig. 1, the present invention provides a construction waste crushing device, including a crusher 1 and a bucket elevator 2, wherein the crusher 1 includes a machine body 3, a top end of the machine body 3 is provided with a feed hopper 4 and a conveyor belt 37, and the conveyor belt 37 is fixedly disposed at a top of the machine body 3 and is used for conveying construction waste into the crusher 1; the outer sides of the crusher 1 and the bucket elevator 2 are respectively provided with a driving motor for providing power for the crusher 1 and the bucket elevator 2.

Specifically, referring to fig. 2, a jaw crusher, a secondary crushing device, a screening device and a material receiving device are sequentially arranged in a machine body 3 from top to bottom, wherein the jaw crusher comprises a fixed jaw plate 5, a movable jaw plate 6 and a first motor 7, the fixed jaw plate 5 is fixedly arranged in the machine body 3, the movable jaw plate 6 is arranged opposite to the fixed jaw plate 5, a crushing channel narrowed from top to bottom is formed between the fixed jaw plate 5 and the movable jaw plate 6, the secondary crushing device is arranged at the bottom end of the crushing channel, the secondary crushing device comprises a second motor 16 and two crushing rollers 17, the second motor 16 is fixedly arranged on the outer side of the machine body 3, an output shaft of the second motor 16 is fixedly arranged at one end of one crushing roller 17, and gears meshed with each other are fixedly arranged at the other ends of the two crushing rollers 17 respectively. The two crushing rollers 17 rotate reversely to obtain a better secondary crushing effect.

Specifically, referring to fig. 2, the material receiving device includes a first material receiving barrel 31 and a second material receiving barrel 32, the first material receiving barrel 31 is installed at the bottom end of the sieve plate structure and is used for receiving the construction waste passing through the screen 21, the second material receiving barrel 32 is arranged at the right side of the first material receiving barrel 31, a filter screen 33 arranged in an inclined manner is arranged inside the second material receiving barrel 32, a blanking port 34 is arranged at the bottom end of the second material receiving barrel 32, and the blanking port 34 is communicated with a feeding port 35 of the bucket elevator 2. The second receiving barrel 32 is used for receiving larger construction waste particles which cannot pass through the screen 21 from the screening device, the screen 33 is arranged to enable the construction waste particles which meet the size standard to pass through and enter the bottom of the second receiving barrel 32, and most of the construction waste particles pushed down by the push plate 19 do not meet the size standard, so that the larger construction waste particles roll downwards along the inclined screen 33 and enter the bottom of the bucket elevator 2 through the feeding hole 35 of the bucket elevator 2.

Specifically, one end of the conveyor belt 37 is provided on the bottom side of the discharge port 36 of the bucket elevator 2, the conveyor belt 37 is fixedly provided on the top of the machine body 3, and the other end of the conveyor belt 37 is provided on the top of the hopper 4. The larger construction waste particles are lifted by the bucket elevator 2, flow out from the discharge port 36 of the bucket elevator 2, fall on the conveyor belt 37, are conveyed by the conveyor belt 37, and then enter the crusher 1 through the hopper, so that the circular crushing is realized.

Specifically, referring to fig. 3-4, the right side of the movable jaw 6 is provided with an output end of a buffer cylinder 40 through a hinge base 8, the other end of the buffer cylinder 40 is hinged to the inner wall of the machine body 3, the buffer cylinder 40 plays a role in buffering the movable jaw 6, one side wall of the movable jaw 6 is provided with a long circular hole groove 9, the left side and the right side of the bottom of the movable jaw 6 are respectively fixed with an installation shaft 10, the jaw crusher further comprises an adjustment plate 11, the adjustment plate 11 is arranged on the two sides of the bottom of the movable jaw 6 and is fixedly connected with the inner wall of the machine body 3, the adjustment plate 11 is horizontally provided with a plurality of adjustment holes 12, and the installation shaft 10 and the adjustment holes 12 are rotatably installed in a matching manner; first motor 7 fixed mounting has a rolling disc 13 in the lateral wall of organism 3, and first motor 7's output shaft fixed mounting has a driving shaft 14, and one side eccentric settings that first motor 7 was kept away from to rolling disc 13 has a drive shaft 14, and in driving shaft 14 inserted the slotted hole groove 9 that 6 a lateral wall of movable jaw was seted up, driving shaft 14 rotated and can drive movable jaw 6 swing back and forth, accomplished the preliminary breakage to building rubbish. Wherein move jaw 6 and make and move 6 bottoms of jaw and keep motionless basically around its bottom both sides installation axle 10 pivoted motion mode, control the displacement very little promptly, quiet jaw keeps unanimous basically with the export size that moves jaw 6 and form, can effectual control building rubbish through the size after the jaw breaker is broken, does benefit to second grade breaker's further breakage, avoids the great building rubbish of granule to pile up before second grade breaker, avoids second grade breaker card dead, excessive wearing and tearing.

Particularly, the opposite surfaces of the movable jaw plate 6 and the fixed jaw plate 5 are provided with wear-resistant layers 15, so that the service life of the movable jaw plate and the fixed jaw plate is prolonged.

Specifically, the inner wall of the adjusting hole 12 is provided with an elastic rubber sleeve, and the mounting shaft 10 is arranged in the elastic rubber sleeve. The arrangement of the elastic rubber sleeve enables the movable jaw plate 6 to have a shaking allowance of the driving shaft 14 when being greatly impacted, and the jaw crusher is prevented from being stuck.

Specifically, referring to fig. 5-6, the screening device includes a screen plate structure, the screen plate structure includes two side baffles 18, a push plate 19, a turnover plate 20 and a screen 21 at the bottom, a space formed by the two side baffles 18, the push plate 19 and the turnover plate 20 is used for receiving the construction waste crushed by the secondary crushing device, a slide rail 22 is arranged at the bottom of the screen plate structure, the slide rail 22 is fixed on the inner side wall of the machine body 3, a cam 26 driving mechanism is arranged at the left side of the screen plate structure, the cam 26 driving mechanism includes a third motor 23, a coupler 24, a rotating shaft 25 and a cam 26, the third motor 23 is fixedly installed on the outer side wall of the machine body 3, an output shaft of the third motor 23 is fixedly connected with the rotating shaft 25 through the coupler 24, two cams 26 are fixedly installed on the rotating shaft 25, the cam 26 abuts against the left side of the screen plate structure, and the cam 26 driving mechanism is used for driving the screen plate structure to slide left and right along the slide rail 22. The space formed by the baffle plates 18 at the two sides, the push plate 19 and the turnover plate 20 in the sieve plate structure can completely receive the construction waste crushed by the secondary crushing device, the construction waste is prevented from being scattered, and the high-frequency screening of the sieve plate structure is realized by the matching of the motor and the cam 26.

Specifically, referring to fig. 5-6, the screening device further includes a reset mechanism, the reset mechanism includes a first telescopic rod 27 fixedly connected to the right side of the screen plate structure, a right side of the first telescopic rod 27 is fixedly connected to an installation block 28, the installation block 28 is fixedly connected to the inner side wall of the machine body 3, a first spring 29 is sleeved outside the first telescopic rod 27, and two ends of the first spring 29 are respectively fixedly connected to the screen plate structure and the installation block 28. The reset mechanism is matched with the cam 26 to realize the automatic reset of the sieve plate structure. The screening device further comprises a driving air cylinder 30, one end of the driving air cylinder 30 is fixedly connected with the inner side wall of the machine body 3, and the output end of the driving air cylinder 30 is fixedly connected with a push plate 19. The driving cylinder 30 drives the pushing plate 19 to move rightward, and pushes the large construction waste particles that cannot pass through the screen 21 to the next process.

Specifically, referring to fig. 5-6, the flapper is mounted to the right side of the screen deck structure and is connected to the screen 21 by a torsion spring. The baffle is vertical setting at initial condition, and when the great building granule rubbish granule that push pedal 19 propelling movement can't pass through screen cloth 21, the baffle overturns to the right under the effect of thrust to it is downward to incline under the effect of building granule gravity, makes great building rubbish granule get into next process.

Specifically, referring to fig. 2, the bottom of the machine body 3 is provided with an elastic base, the elastic base includes a second telescopic rod 38 and a second spring 39, the top end of the second telescopic rod 38 is fixedly connected to the bottom end of the machine body 3, and two ends of the second spring 39 are fixedly connected to the bottom end of the machine body 3 and the bottom end of the second telescopic rod 38, respectively. The elastic base is favorable for buffering the vibration generated by the whole crushing device during working, and the service life of the vibration device is prolonged.

The working process is as follows: when the garbage crusher works, each driving motor is started, construction garbage is dumped to the conveying belt 37, the construction garbage enters the crusher 1 through the hopper, the construction garbage is crushed by the jaw crusher and the secondary crushing device and then enters the screening device, the construction garbage passing through the screen 21 enters the first material receiving barrel 31, large construction garbage particles which cannot pass through the screen 21 enter the second material receiving barrel 32 under the pushing of the driving cylinder 30 and the push plate 19, the construction garbage particles which meet the size standard pass through the filter screen 33 in the second material receiving barrel 32 and enter the bottom of the second material receiving barrel 32, and most of the construction garbage particles pushed down by the push plate 19 do not meet the size standard, so the large construction garbage particles roll downwards along the inclined filter screen 33 and enter the bottom of the bucket elevator 2 through the feed inlet 35 of the bucket elevator 2; the large construction waste particles are lifted by the bucket elevator 2, flow out from the discharge port 36 of the bucket elevator 2, fall on the conveyor belt 37, are conveyed by the conveyor belt 37, and then enter the crusher 1 through the hopper, so that the circular crushing is realized until the construction waste is completely crushed into the target particle size or less.

The foregoing is illustrative of the best mode of the invention and details not described herein are within the common general knowledge of a person of ordinary skill in the art. The scope of the present invention is defined by the appended claims, and any equivalent modifications based on the technical teaching of the present invention are also within the scope of the present invention.

Claims

1. The utility model provides a construction waste breaker which characterized in that: the crushing machine comprises a crusher (1) and a bucket elevator (2), wherein the crusher (1) comprises a machine body (3), a feed hopper (4) is arranged at the top end of the machine body (3), the machine body (3) is internally provided with a jaw crushing machine, a secondary crushing device, a screening device and a material receiving device in sequence from top to bottom, the jaw crushing machine comprises a fixed jaw plate (5), a movable jaw plate (6) and a first motor (7), the fixed jaw plate (5) is fixedly arranged inside the machine body (3), the movable jaw plate (6) and the fixed jaw plate (5) are arranged oppositely, a crushing channel narrowed from top to bottom is formed between the fixed jaw plate (5) and the movable jaw plate (6), the right side of the movable jaw plate (6) is provided with an output end of a buffer cylinder (40) through a hinge base (8), the other end of the buffer cylinder (40) is hinged and arranged on the inner wall of the machine body (3), one side wall of the movable jaw plate (6) is provided with a long circular hole groove (9), the jaw crusher comprises a movable jaw plate (6), a jaw crusher body, a plurality of adjusting plates (11), a plurality of adjusting holes (12) and a plurality of clamping plates (10), wherein the left side and the right side of the bottom of the movable jaw plate (6) are respectively fixed with an installing shaft (10), the adjusting plates (11) are arranged on the two sides of the bottom of the movable jaw plate (6) and are fixedly connected with the inner wall of the crusher body (3), the adjusting plates (11) are provided with a plurality of adjusting holes (12) in the horizontal direction, and the installing shafts (10) and the adjusting holes (12) are installed in a rotating fit mode; first motor (7) fixed mounting is in the lateral wall of organism (3), the output shaft fixed mounting of first motor (7) has rolling disc (13), one side off-centre that first motor (7) were kept away from in rolling disc (13) is provided with drive shaft (14), drive shaft (14) insert move jaw (6) a lateral wall and set up in long circular hole groove (9), drive shaft (14) rotate and to drive and move jaw (6) swing back and forth, accomplish the preliminary breakage to building rubbish.

2. The construction waste crushing device as claimed in claim 1, wherein the surfaces of the movable jaw plate (6) opposite to the fixed jaw plate (5) are provided with wear-resistant layers (15).

3. The construction waste crushing device as claimed in claim 1, wherein the inner wall of the adjusting hole (12) is provided with an elastic rubber sleeve, and the mounting shaft (10) is arranged in the elastic rubber sleeve.

4. The construction waste crushing device according to claim 1, wherein the secondary crushing device is arranged at the bottom end of the crushing channel, the secondary crushing device comprises a second motor (16) and two crushing rollers (17), the second motor (16) is fixedly arranged at the outer side of the machine body (3), an output shaft of the second motor (16) is fixedly arranged at one end of one crushing roller (17), and gears in mutual meshing transmission are respectively and fixedly arranged at the other ends of the two crushing rollers (17).

5. The construction waste crushing device according to claim 1, wherein the screening device comprises a screen plate structure, the screen plate structure comprises two side baffles (18), a push plate (19), a turnover plate (20) and a screen (21) at the bottom, a space formed by the two side baffles (18), the push plate (19) and the turnover plate (20) is used for receiving construction waste crushed by the secondary crushing device, a slide rail (22) is arranged at the bottom of the screen plate structure, the slide rail (22) is fixed on the inner side wall of the machine body (3), a cam (26) driving mechanism is arranged at the left side of the screen plate structure, the cam (26) driving mechanism comprises a third motor (23), a coupler (24), a rotating shaft (25) and a cam (26), the third motor (23) is fixedly installed on the outer side wall of the machine body (3), an output shaft of the third motor (23) is fixedly connected with the rotating shaft (25) through the coupler (24), two cams (26) are fixedly installed on the rotating shaft (25), the cams (26) are abutted to the left side of the sieve plate structure, and the cam (26) driving mechanism is used for driving the sieve plate structure to slide left and right along the sliding rail (22).

6. The construction waste crushing device according to claim 5, further comprising a resetting mechanism, wherein the resetting mechanism comprises a first telescopic rod (27) fixedly connected to the right side of the sieve plate structure, the right side of the first telescopic rod (27) is fixedly connected with a mounting block (28), the mounting block (28) is fixedly connected with the inner side wall of the machine body (3), a first spring (29) is sleeved outside the first telescopic rod (27), and two ends of the first spring (29) are respectively fixedly connected with the sieve plate structure and the mounting block (28).

7. The construction waste crushing device according to claim 5, wherein the screening device further comprises a driving air cylinder (30), one end of the driving air cylinder (30) is fixedly connected with the inner side wall of the machine body (3), the output end of the driving air cylinder (30) is fixedly connected with the push plate (19), the baffle plate is installed on the right side of the sieve plate structure, and the baffle plate is connected with the screen (21) through a torsion spring.

8. The construction waste crushing device according to claim 5, wherein the material receiving device comprises a first material receiving barrel (31) and a second material receiving barrel (32), the first material receiving barrel (31) is installed at the bottom end of the sieve plate structure and used for receiving construction waste passing through the sieve screen (21), the second material receiving barrel (32) is arranged at the right side of the first material receiving barrel (31), a filter screen (33) which is obliquely arranged is arranged inside the second material receiving barrel (32), a blanking port (34) is arranged at the bottom end of the second material receiving barrel (32), and the blanking port (34) is communicated with a feeding port (35) of the bucket elevator (2).

9. The construction waste crushing device as claimed in claim 1, wherein one end of the conveyor belt (37) is arranged at the bottom side of the discharge port (36) of the bucket elevator (2), the conveyor belt (37) is fixedly arranged at the top of the machine body (3), and the other end of the conveyor belt (37) is arranged at the top of the feed hopper (4).

10. The construction waste crushing device according to claim 1, wherein an elastic base is arranged at the bottom of the machine body (3), the elastic base comprises a second telescopic rod (38) and a second spring (39), the top end of the second telescopic rod (38) is fixedly connected with the bottom end of the machine body (3), and two ends of the second spring (39) are respectively fixedly connected with the bottom end of the machine body (3) and the bottom end of the second telescopic rod (38).