Equipment for preparing recycled building materials from construction waste

Abstract

The present invention provides a device for preparing recycled building materials from construction waste, belonging to the field of construction waste regeneration. The device for preparing recycled building materials from construction waste comprises a jaw crusher and a mounting frame. The jaw crusher comprises a frame, a driving device, a fixed jaw plate and a movable jaw plate, and also comprises a first jaw plate assembly, a second jaw plate assembly and an auxiliary mechanism. The present invention arranges the first jaw plate assembly. When the first jaw plate assembly crushes larger construction waste, the first jaw plate contacts the construction waste, and the first jaw plate squeezes the first elastic member for elastic buffering. Thus, the elastic buffering of the first elastic member reduces the impact force of the first jaw plate assembly when it contacts the construction waste, reduces the reaction force applied to the fixed jaw plate and the first jaw plate when the construction waste is impacted by the first jaw plate assembly, reduces the wear on the fixed jaw plate and the first jaw plate, and improves the service life.

Description

Technical Field

[0001] The invention belongs to the field of construction waste regeneration, and in particular relates to a device for preparing regenerated building materials from construction waste. Background Art

[0002] Construction waste refers to the general term for slag, waste concrete, waste bricks and other wastes generated by people in the production activities of the construction industry such as demolition, construction, decoration and repair. Most of the construction waste can be reused as renewable resources after being crushed, screened, removed and dusted by professional construction waste treatment equipment.

[0003] The Chinese patent application number CN202410087127.5 discloses an integrated device for crushing and screening construction waste on site, which relates to the technical field of crushing devices. The invention includes: a carrier frame, a jaw crusher is installed on the carrier frame, a first conveyor belt assembly located below the jaw crusher is installed on the carrier frame; and a separation mechanism. In this invention, when stones, metal objects and impurities enter the separation barrel, the impurities will fall from the filter tank into the ash collecting mechanism, thereby completing the centralized collection of impurities and effectively reducing the amount of impurities contained in the stones when they enter the third conveyor belt assembly; it is convenient for the subsequent secondary processing and use of the stones, and improves the strength of the recovered stones when in use. The metal objects in the separation barrel can be transported to the second conveyor belt assembly through the transfer mechanism, thereby realizing the separation of the metal objects when the garbage concrete is crushed, facilitating the subsequent secondary recovery of the metal objects inside the garbage concrete, and improving the utilization rate of the garbage concrete. However, when the jaw crusher crushes construction waste, the size of the construction waste has a certain influence on the crushing. When crushing larger construction waste, the movable jaw plate on the top of the jaw crusher will directly squeeze the construction waste to make it hard contact with the fixed jaw plate. The impact force of the movable jaw plate when contacting the construction waste is large, resulting in a large reaction force exerted by the construction waste on the fixed jaw plate and the movable jaw plate. This will aggravate the wear of the fixed jaw plate and the movable jaw plate for a long time and reduce the service life.

[0004] In addition, when crushing larger construction waste, the space between the fixed jaw plate and the movable jaw plate at the bottom of the jaw crusher becomes larger due to the limitation of the larger construction waste, and the crushing force becomes smaller, resulting in the smaller construction waste between the fixed jaw plate and the movable jaw plate at the bottom of the jaw crusher cannot be completely crushed, affecting the crushing quality and efficiency.

[0005] Therefore, in order to solve the above problems, it is necessary to provide a device for preparing recycled building materials from construction waste. Summary of the invention

[0006] The purpose of the present invention is to provide a device for preparing recycled building materials from construction waste, aiming to solve the problem that when a jaw crusher is crushing larger construction waste, the movable jaw plate on the top of the jaw crusher will directly squeeze the construction waste so that it will come into hard contact with the fixed jaw plate, and the reaction force exerted by the construction waste on the fixed jaw plate and the movable jaw plate is relatively large. This will aggravate the wear of the fixed jaw plate and the movable jaw plate for a long time and reduce the service life.

[0007] To achieve the above object, the present invention provides the following technical solutions:

[0008] A device for preparing recycled building materials from construction waste, comprising a jaw crusher and a mounting frame, wherein the jaw crusher comprises a frame, a driving device, a fixed jaw plate and a movable jaw plate, and further comprising;

[0009] A first jaw plate assembly, the first jaw plate assembly includes a first fixed bin, the first fixed bin is fixedly connected to the top of one side of the movable jaw plate close to the fixed jaw plate, the first fixed bin is internally sealed and slidably connected to the first jaw plate, and a first elastic member is connected between the side of the first jaw plate away from the fixed jaw plate and the inner wall of the first fixed bin, for buffering when crushing construction waste;

[0010] A second jaw plate assembly, the second jaw plate assembly includes a second fixed bin, the second fixed bin is fixedly connected to the bottom of one side of the movable jaw plate close to the fixed jaw plate, the second fixed bin is arranged below the first fixed bin, the second jaw plate is sealingly and slidably connected inside the second fixed bin, two symmetrically arranged limiting members are fixedly connected inside the second fixed bin, a second elastic member is connected between a side of the second jaw plate away from the fixed jaw plate and an inner wall of the second fixed bin, for pulling the second jaw plate to contact the limiting member;

[0011] and an auxiliary mechanism, the auxiliary mechanism being arranged inside the movable jaw plate and being used for assisting the first jaw plate assembly and the second jaw plate assembly in crushing the construction waste;

[0012] A sliding groove is provided on the top of the first jaw plate, and a third jaw plate is slidably connected inside the sliding groove. The auxiliary mechanism includes a first chamber, a second chamber and a third chamber provided inside the movable jaw plate. A vertically arranged third piston plate is slidably connected inside the third chamber. A knocking piece is fixedly connected to a side of the third piston plate close to the first fixed warehouse, and the position of the knocking piece corresponds to the position of the third jaw plate. An end of the knocking piece away from the third piston plate passes through the outer wall of the first fixed warehouse and is located inside the first fixed warehouse. The knocking piece is sealed and slidably connected to the first fixed warehouse.

[0013] Preferably, two symmetrically arranged limit grooves are provided inside the slide groove, and a limit plate fixedly connected to the third jaw plate is slidably connected inside each of the limit grooves, and a third elastic member is connected between the side of each limit plate close to the fixed jaw plate and the inner wall of the limit groove.

[0014] Preferably, the interior of the first chamber is slidably connected with a first piston plate which is arranged transversely, and the first piston plate divides the interior of the first chamber into a fourth chamber and a fifth chamber.

[0015] Preferably, the second chamber is arranged above the first chamber, and the interior of the second chamber is slidably connected to a second piston plate arranged laterally, and the bottom of the second piston plate is fixedly connected to a sliding rod fixedly connected to the first piston plate, and the sliding rod is sealingly and slidably connected to the movable jaw plate.

[0016] Preferably, the third chamber is arranged above the second chamber, and a fourth elastic member is connected between the other side of the third piston plate and the inner wall of the third chamber.

[0017] Preferably, an air inlet hole communicating with the fourth chamber is opened inside the first fixed bin.

[0018] Preferably, a guide groove is provided inside the movable jaw plate, and the fifth chamber is connected with the interior of the second fixed bin through the guide groove.

[0019] Preferably, an exhaust hole communicating with the second chamber is opened inside the third chamber.

[0020] Preferably, the fifth chamber and the second fixed bin are both filled with hydraulic oil.

[0021] Preferably, when the first piston plate moves to the bottom inside the first chamber, the first piston plate drives the second piston plate to move to the bottom inside the second chamber through the sliding rod.

[0022] Compared with the prior art, the present invention has the following beneficial effects:

[0023] The present invention arranges the first jaw plate assembly. When the first jaw plate assembly is crushing larger construction waste, the first jaw plate contacts the construction waste, and the first jaw plate squeezes the first elastic part for elastic buffering. Thus, the elastic buffering of the first elastic part reduces the impact force of the first jaw plate assembly when it contacts the construction waste, reduces the reaction force exerted on the fixed jaw plate and the first jaw plate when the construction waste is impacted by the first jaw plate assembly, reduces the wear on the fixed jaw plate and the first jaw plate, and increases the service life.

[0024] The present invention is provided with the second jaw plate assembly. The first jaw plate assembly can crush larger construction waste. Smaller construction waste will pass through between the first jaw plate assembly and the fixed jaw plate and be stuck between the second jaw plate assembly and the fixed jaw plate for crushing. When the first jaw plate assembly can crush larger construction waste, the first jaw plate moves in the first fixed bin toward the direction close to the movable jaw plate. The first jaw plate squeezes the gas in the first fixed bin into the fourth chamber through the air inlet hole, pushing the first piston plate to move downward in the first chamber. The first piston plate squeezes the hydraulic oil in the fifth chamber into the second fixed bin. The hydraulic oil in the second fixed bin becomes more, which can push the second jaw plate to move in the second fixed bin toward the direction away from the movable jaw plate. Therefore, while crushing larger construction waste, the second jaw plate is extended to compensate for the enlarged space between the fixed jaw plate and the second jaw plate at the bottom of the jaw crusher due to the restriction of larger construction waste, so that the space between the fixed jaw plate and the second jaw plate can be reduced, so that the second jaw plate can contact with smaller construction waste in advance for crushing, thereby preventing the construction waste from being completely crushed, and improving the quality and efficiency of crushing.

[0025] The present invention arranges a knocking piece and a third jaw plate. When crushing larger construction waste, the first jaw plate will move in the direction close to the movable jaw plate inside the first fixed bin. The first jaw plate squeezes the gas inside the first fixed bin into the fourth chamber through the air inlet hole, pushes the first piston plate to move downward inside the first chamber, and drives the second piston plate to move downward inside the second chamber. The second piston plate extracts the gas inside the third chamber into the second chamber through the exhaust hole, so that the fourth elastic piece is elastically reset, so that the knocking piece quickly knocks the third jaw plate, and the third jaw plate knocks the construction waste, thereby realizing auxiliary knocking and crushing of larger construction waste on the top, and improving the crushing efficiency of larger construction waste. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] The accompanying drawings are used to provide a further understanding of the present invention and constitute a part of the specification. Together with the embodiments of the present invention, they are used to explain the present invention and do not constitute a limitation of the present invention. In the accompanying drawings:

[0027] Figure 1 It is a schematic diagram of the overall structure of the present invention;

[0028] Figure 2 It is a structural schematic diagram of the jaw crusher of the present invention;

[0029] Figure 3 It is a structural distribution diagram of the first jaw plate assembly and the second jaw plate assembly of the present invention;

[0030] Figure 4 This is a structural distribution diagram of the first fixed bin and the second fixed bin of the present invention;

[0031] Figure 5 It is a structural schematic diagram of the first jaw plate assembly of the present invention;

[0032] Figure 6 is a schematic structural diagram of the second jaw plate assembly of the present invention;

[0033] Figure 7 It is a structural distribution diagram of the auxiliary mechanism of the present invention;

[0034] Figure 8 is a schematic diagram of the internal structure of the first chamber of the present invention;

[0035] Fig. 9 For the present invention Figure 8 A magnified view of the structure of the middle part A;

[0036] Fig.10 It is a structural schematic diagram of the guide groove of the present invention;

[0037] Fig.11 It is a schematic structural diagram of the position limiting member of the present invention.

[0038] In the figure: 1. jaw crusher; 11. frame; 12. driving device; 13. fixed jaw plate; 14. movable jaw plate; 2. mounting frame; 3. first jaw plate assembly; 31. first fixed bin; 32. first jaw plate; 33. first elastic member; 34. slide groove; 35. third jaw plate; 36. limit groove; 37. limit plate; 38. third elastic member; 4. second jaw plate assembly; 41. second fixed bin; 42. second jaw plate; 43. second elastic member; 44. limit member; 5. auxiliary mechanism; 51. first chamber; 52. second chamber; 53. third chamber; 54. first piston plate; 55. fourth chamber; 56. fifth chamber; 57. second piston plate; 58. sliding rod; 59. third piston plate; 510. knocking member; 511. fourth elastic member; 512. air inlet; 513. guide groove; 514. exhaust hole. DETAILED DESCRIPTION

[0039] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0040] Embodiment 1

[0041] When the jaw crusher is crushing construction waste, the size of the construction waste has a certain influence on the crushing. When crushing larger construction waste, the movable jaw plate on the top of the jaw crusher will directly squeeze the construction waste and make it come into hard contact with the fixed jaw plate. The impact force when the movable jaw plate contacts the construction waste is large, resulting in a large reaction force exerted by the construction waste on the fixed jaw plate and the movable jaw plate. This will aggravate the wear of the fixed jaw plate and the movable jaw plate for a long time and reduce their service life.

[0042] See also Figure 1 - Figure 6 and Fig.11 As shown, the present invention provides the following technical solutions: a device for preparing recycled building materials from construction waste, comprising a jaw crusher 1 and a mounting frame 2, the jaw crusher 1 comprising a frame 11, a driving device 12, a fixed jaw plate 13 and a movable jaw plate 14, and also comprising;

[0043] The first jaw plate assembly 3 includes a first fixed bin 31, which is fixedly connected to the top of the movable jaw plate 14 on one side close to the fixed jaw plate 13, and the first jaw plate 32 is slidably connected to the inside of the first fixed bin 31 in a sealed manner, and a first elastic member 33 is connected between the side of the first jaw plate 32 away from the fixed jaw plate 13 and the inner wall of the first fixed bin 31, for buffering when crushing construction waste;

[0044] The second jaw assembly 4 includes a second fixed bin 41, which is fixedly connected to the bottom of the movable jaw 14 near the fixed jaw 13. The second fixed bin 41 is arranged below the first fixed bin 31. The second jaw 42 is sealed and slidably connected inside the second fixed bin 41. Fig.11 As shown, two symmetrically arranged stoppers 44 are fixedly connected inside the second fixed bin 41, and a second elastic member 43 is connected between the side of the second jaw plate 42 away from the fixed jaw plate 13 and the inner wall of the second fixed bin 41, for pulling the second jaw plate 42 to contact the stoppers 44;

[0045] And an auxiliary mechanism 5, which is arranged inside the movable jaw plate 14 and is used to assist the first jaw plate assembly 3 and the second jaw plate assembly 4 in crushing the construction waste.

[0046] The driving device 12 is used to drive the movable jaw plate 14 to perform periodic reciprocating motions against the fixed jaw plate 13, sometimes separating and sometimes approaching. When separating, the material enters the crushing chamber and the finished product is discharged from the bottom; when approaching, the material loaded between the two jaw plates is squeezed and crushed. The jaw crusher 1 also includes components such as a safety device and an adjustment device. The jaw crusher 1 and the driving device 12 are both prior arts and will not be described in detail here.

[0047] When the first jaw plate 32 moves inside the first fixed chamber 31 , it is restricted by the first fixed chamber 31 and cannot come out completely. When the second jaw plate 42 moves inside the second fixed chamber 41 , it is restricted by the second fixed chamber 41 and cannot come out completely.

[0048] Under normal conditions, that is, when the jaw crusher 1 is not working, the first jaw plate 32 in the first jaw plate assembly 3 and the second jaw plate 42 in the second jaw plate assembly 4 remain on the same plane. At this time, when the first jaw plate assembly 3 is crushing construction waste, the first jaw plate 32 will move in the direction close to the movable jaw plate 14 inside the first fixed bin 31 and squeeze the first elastic member 33. When the second jaw plate assembly 4 is crushing construction waste, the second jaw plate 42 will be restricted by the limiting member 44 and can directly cooperate with the fixed jaw plate 13 to squeeze the construction waste for crushing.

[0049] It should be noted that the fixed jaw plate 13 is vertically fixed on the frame 11, and the movable jaw plate 14 is inclined to form a crushing chamber with a larger upper part and a smaller lower part with the fixed jaw plate 13. Through the arrangement of the first jaw plate assembly 3 and the second jaw plate assembly 4, when the construction waste is crushed, the larger construction waste will be stuck between the first jaw plate assembly 3 and the fixed jaw plate 13. At this time, the driving device 12 is working, which can enable the first jaw plate assembly 3 to crush the larger construction waste, and the smaller construction waste will pass through between the first jaw plate assembly 3 and the fixed jaw plate 13 and be stuck between the second jaw plate assembly 4 and the fixed jaw plate 13. At this time, the driving device 12 is working, which can enable the second jaw plate assembly 4 to crush the smaller construction waste.

[0050] In actual use, when the first jaw plate assembly 3 crushes larger construction waste, the first jaw plate 32 contacts with the construction waste, and the reaction force can make the first jaw plate 32 move preferentially in the direction close to the movable jaw plate 14 inside the first fixed bin 31, and squeeze the first elastic member 33 for elastic buffering. When the first elastic member 33 is compressed to the limit position, the first jaw plate 32 will squeeze the construction waste together with the fixed jaw plate 13 for crushing. The elastic buffering of the first elastic member 33 can reduce the impact force of the first jaw plate assembly 3 when it contacts with the construction waste, reduce the reaction force applied to the fixed jaw plate 13 and the first jaw plate 32 when the construction waste is impacted by the first jaw plate assembly 3, reduce the wear on the fixed jaw plate 13 and the first jaw plate 32, and increase the service life.

[0051] To sum up, through the setting of the first jaw plate assembly 3, when the first jaw plate assembly 3 crushes larger construction waste, the first jaw plate 32 contacts the construction waste, and the first jaw plate 32 squeezes the first elastic member 33 for elastic buffering. Therefore, the elastic buffering of the first elastic member 33 can reduce the impact force of the first jaw plate assembly 3 when it contacts the construction waste, and reduce the reaction force exerted on the fixed jaw plate 13 and the first jaw plate 32 when the construction waste is impacted by the first jaw plate assembly 3, thereby reducing the wear on the fixed jaw plate 13 and the first jaw plate 32 and improving the service life.

[0052] Embodiment 2

[0053] On the basis of the above embodiment, the bottom of the movable jaw plate of the existing jaw crusher is movably arranged. While crushing larger construction waste, it is restricted by the larger construction waste, resulting in the space between the fixed jaw plate and the movable jaw plate at the bottom of the jaw crusher becoming larger and the crushing force becoming smaller, resulting in the smaller construction waste between the fixed jaw plate and the movable jaw plate at the bottom of the jaw crusher cannot be completely crushed, affecting the crushing quality and efficiency.

[0054] See also Figure 7 - Fig.10 The auxiliary mechanism 5 includes a first chamber 51, a second chamber 52 and a third chamber 53 opened inside the movable jaw plate 14. The first chamber 51 is slidably connected to a first piston plate 54 arranged transversely. The first piston plate 54 divides the interior of the first chamber 51 into a fourth chamber 55 and a fifth chamber 56.

[0055] An air inlet 512 communicating with the fourth chamber 55 is defined inside the first fixed chamber 31 .

[0056] A guide groove 513 is formed inside the movable jaw plate 14 , and the fifth chamber 56 is connected with the interior of the second fixed chamber 41 through the guide groove 513 .

[0057] The fifth chamber 56 and the second fixed bin 41 are both filled with hydraulic oil, in order to ensure the stability of the second jaw plate 42 when crushing construction waste.

[0058] It should be noted that when the first jaw plate assembly 3 is crushing larger construction waste, the first jaw plate 32 contacts the construction waste, and the first jaw plate 32 moves in the direction close to the movable jaw plate 14 inside the first fixed bin 31, and squeezes the first elastic member 33 for compression, and the first jaw plate 32 squeezes the gas inside the first fixed bin 31 to enter the fourth chamber 55 through the air inlet hole 512, and the pressure inside the fourth chamber 55 increases, pushing the first piston plate 54 to move downward inside the first chamber 51, and the first piston plate 54 squeezes the hydraulic oil inside the fifth chamber 56 to enter the second fixed bin 41 through the guide groove 513. , the hydraulic oil in the second fixed bin 41 increases, which can push the second jaw plate 42 to move in the second fixed bin 41 in the direction away from the movable jaw plate 14, and further stretch the second elastic member 43, thereby crushing larger construction waste while compensating for the enlarged space between the fixed jaw plate 13 and the second jaw plate 42 at the bottom of the jaw crusher 1 due to the restriction of the larger construction waste through the extension of the second jaw plate 42, and can reduce the space between the fixed jaw plate 13 and the second jaw plate 42, so that the second jaw plate 42 can contact with the smaller construction waste in advance for crushing, thereby preventing the construction waste from being incompletely crushed, and improving the crushing quality and efficiency.

[0059] When the first jaw plate assembly 3 no longer crushes larger construction waste, the first elastic member 33 is elastically reset to return the first jaw plate 32 to its initial position, and the first piston plate 54 is able to move upward inside the first chamber 51, drawing the hydraulic oil inside the second fixed bin 41 into the inside of the fifth chamber 56, and the second elastic member 43 is elastically reset to allow the second jaw plate 42 to contact the limit member 44 again and remain on the same plane as the first jaw plate 32.

[0060] In summary, through the arrangement of the second jaw plate assembly 4, the first jaw plate assembly 3 can crush larger construction waste, and smaller construction waste will pass between the first jaw plate assembly 3 and the fixed jaw plate 13, and be stuck between the second jaw plate assembly 4 and the fixed jaw plate 13 for crushing. When the first jaw plate assembly 3 can crush larger construction waste, the first jaw plate 32 moves in the first fixed bin 31 toward the direction close to the movable jaw plate 14, and the first jaw plate 32 squeezes the gas in the first fixed bin 31 to enter the fourth chamber 55 through the air inlet hole 512, pushing the first piston plate 54 to move downward in the first chamber 51, and the first piston plate 54 squeezes the fifth chamber 56. The internal hydraulic oil enters the second fixed bin 41, and the amount of hydraulic oil in the second fixed bin 41 increases, which can push the second jaw plate 42 to move in the second fixed bin 41 in a direction away from the movable jaw plate 14. Therefore, while crushing larger construction waste, the second jaw plate 42 extends to compensate for the increased space between the fixed jaw plate 13 and the second jaw plate 42 at the bottom of the jaw crusher 1 due to the restriction of the larger construction waste. The space between the fixed jaw plate 13 and the second jaw plate 42 can be reduced, so that the second jaw plate 42 can come into contact with the smaller construction waste in advance for crushing, thereby meeting normal crushing requirements, preventing the construction waste from being incompletely crushed, and improving the quality and efficiency of crushing.

[0061] Embodiment 3

[0062] On the basis of the above-mentioned embodiment, when the first jaw plate assembly is used to crush larger construction waste, due to the large mass and volume of the construction waste, more energy is required to ensure the smooth progress of the crushing process, which increases the difficulty of processing. The first jaw plate assembly needs to squeeze the construction waste multiple times to achieve crushing, which reduces work efficiency.

[0063] See also Figure 7 - Fig. 9 A slide groove 34 is provided inside the top of the first jaw plate 32, and a third jaw plate 35 is slidably connected inside the slide groove 34. Two symmetrically arranged limit grooves 36 are provided inside the slide groove 34, and a limit plate 37 fixedly connected to the third jaw plate 35 is slidably connected inside each limit groove 36. A third elastic member 38 is connected between the side of each limit plate 37 close to the fixed jaw plate 13 and the inner wall of the limit groove 36.

[0064] The second chamber 52 is arranged above the first chamber 51, and a second piston plate 57 arranged transversely is slidably connected inside the second chamber 52. A sliding rod 58 fixedly connected to the first piston plate 54 is fixedly connected to the bottom of the second piston plate 57, and the sliding rod 58 is sealingly slidably connected to the movable jaw plate 14;

[0065] The third chamber 53 is arranged above the second chamber 52, and the interior of the third chamber 53 is slidably connected with a vertically arranged third piston plate 59, and the third piston plate 59 is fixedly connected with a knocking piece 510 on one side close to the first fixed warehouse 31, and the position of the knocking piece 510 corresponds to the position of the third jaw plate 35, and a fourth elastic piece 511 is connected between the other side of the third piston plate 59 and the inner wall of the third chamber 53, and the end of the knocking piece 510 away from the third piston plate 59 passes through the outer wall of the first fixed warehouse 31 and is arranged inside the first fixed warehouse 31, and the knocking piece 510 is sealed and slidably connected with the first fixed warehouse 31.

[0066] An exhaust hole 514 communicating with the second chamber 52 is formed inside the third chamber 53 .

[0067] Under normal conditions, that is, when the jaw crusher 1 is not working, the first jaw plate 32 in the first jaw plate assembly 3 and the second jaw plate 42 in the second jaw plate assembly 4 are maintained on the same plane. At this time, the second piston plate 57 is located at the top of the second chamber 52. The second piston plate 57 squeezes the gas inside the second chamber 52 into the third chamber 53 through the exhaust hole 514, which enables the third piston plate 59 to move in the direction away from the third jaw plate 35 inside the third chamber 53 and squeeze the fourth elastic member 511. At this time, the end surface of the knocking member 510 located inside the first fixed bin 31 is flush with the inner wall of the first fixed bin 31.

[0068] When the first piston plate 54 moves to the bottom in the first chamber 51 , the first piston plate 54 drives the second piston plate 57 to move to the bottom in the second chamber 52 through the sliding rod 58 .

[0069] In actual use, larger construction waste is often squeezed and crushed at the top of the first jaw plate assembly 3. When the first jaw plate assembly 3 is crushing larger construction waste, the first jaw plate 32 contacts the construction waste, and the first jaw plate 32 moves in the first fixed bin 31 toward the direction close to the movable jaw plate 14, and squeezes the first elastic member 33 for compression. The first jaw plate 32 squeezes the gas inside the first fixed bin 31 into the fourth chamber 55 through the air inlet 512. The pressure inside the fourth chamber 55 increases, pushing the first piston plate 54 to move downward inside the first chamber 51, and driving the second piston plate 57 to move downward inside the second chamber 52 through the sliding rod 58. The piston plate 57 can extract the internal gas of the third chamber 53 into the interior of the second chamber 52 through the exhaust hole 514, the pressure inside the third chamber 53 becomes weak, and the fourth elastic member 511 is elastically released to reset. Due to the proximity of the first jaw plate 32, the fourth elastic member 511 drives the third piston plate 59 to reset, so that the knocking member 510 can quickly knock the third jaw plate 35. The third jaw plate 35 moves inside the slide groove 34, driving the limit plate 37 to move inside the limit groove 36, and squeezing the third elastic member 38 for compression, so that the third jaw plate 35 can knock on the construction waste, thereby realizing auxiliary knocking and crushing of larger construction waste on the top, and improving the crushing efficiency of larger construction waste.

[0070] Subsequently, when the first jaw plate assembly 3 crushes larger construction waste again, the first elastic member 33 performs elastic reset, so that the first jaw plate 32 can return to its initial position, and the first piston plate 54 can move upward inside the first chamber 51, and drive the second piston plate 57 to move upward inside the second chamber 52 through the sliding rod 58, so that the second piston plate 57 can be located at the top inside the second chamber 52, and the second piston plate 57 squeezes the gas inside the second chamber 52 into the third chamber 53 through the exhaust hole 514, so that the third piston plate 59 can move inside the third chamber 53 in the direction away from the third jaw plate 35, and squeeze the fourth elastic member 511 to store energy, so that the end surface of the knocking member 510 located inside the first fixed bin 31 remains flush with the inner wall of the first fixed bin 31.

[0071] To sum up, through the setting of the knocking piece 510 and the third jaw plate 35, when crushing larger construction waste, the first jaw plate 32 will move in the direction close to the movable jaw plate 14 inside the first fixed bin 31, and the first jaw plate 32 squeezes the gas inside the first fixed bin 31 into the fourth chamber 55 through the air inlet hole 512, pushing the first piston plate 54 to move downward inside the first chamber 51, and driving the second piston plate 57 to move downward inside the second chamber 52, and the second piston plate 57 extracts the internal gas of the third chamber 53 into the second chamber 52 through the exhaust hole 514, so that the fourth elastic piece 511 is elastically reset, so that the knocking piece 510 quickly knocks the third jaw plate 35, so that the third jaw plate 35 knocks on the construction waste, thereby realizing auxiliary knocking and crushing of larger construction waste on the top, and improving the crushing efficiency of larger construction waste.

[0072] Finally, it should be noted that the above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art can still modify the technical solutions described in the aforementioned embodiments or replace some of the technical features therein by equivalents. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. A device for preparing recycled building materials from construction waste, comprising a jaw crusher (1) and a mounting frame (2), wherein the jaw crusher (1) comprises a frame (11), a driving device (12), a fixed jaw plate (13) and a movable jaw plate (14), characterized in that: Also includes: A first jaw plate assembly (3), the first jaw plate assembly (3) comprising a first fixed bin (31), the first fixed bin (31) being fixedly connected to the top of a side of the movable jaw plate (14) close to the fixed jaw plate (13), the first fixed bin (31) being sealingly slidably connected to a first jaw plate (32) inside the first fixed bin (31), a first elastic member (33) being connected between a side of the first jaw plate (32) away from the fixed jaw plate (13) and an inner wall of the first fixed bin (31) for providing a buffer when crushing construction waste; A second jaw plate assembly (4), the second jaw plate assembly (4) comprising a second fixed bin (41), the second fixed bin (41) being fixedly connected to the bottom of one side of the movable jaw plate (14) close to the fixed jaw plate (13), the second fixed bin (41) being located below the first fixed bin (31), the interior of the second fixed bin (41) being sealingly and slidably connected to the second jaw plate (42), the interior of the second fixed bin (41) being fixedly connected to two symmetrically arranged limiting members (44), a second elastic member (43) being connected between a side of the second jaw plate (42) away from the fixed jaw plate (13) and an inner wall of the second fixed bin (41) for pulling the second jaw plate (42) into contact with the limiting member (44); It also includes an auxiliary mechanism (5), which is arranged inside the movable jaw plate (14) and is used to assist the first jaw plate assembly (3) and the second jaw plate assembly (4) in crushing the construction waste; A slide groove (34) is provided on the top of the first jaw plate (32), and a third jaw plate (35) is slidably connected inside the slide groove (34). The auxiliary mechanism (5) comprises a first chamber (51), a second chamber (52) and a third chamber (53) which are provided inside the movable jaw plate (14). A third piston plate (59) which is vertically arranged is slidably connected inside the third chamber (53). A knocking piece (510) is fixedly connected to a side of the third piston plate (59) close to the first fixed bin (31). The position of the knocking piece (510) corresponds to the position of the third jaw plate (35). An end of the knocking piece (510) away from the third piston plate (59) passes through the outer wall of the first fixed bin (31) and is arranged inside the first fixed bin (31). The knocking piece (510) is sealingly and slidably connected to the first fixed bin (31). The slide groove (34) has two symmetrically arranged limit grooves (36) formed therein, each of the limit grooves (36) is slidably connected to a limit plate (37) fixedly connected to the third jaw plate (35), and a third elastic member (38) is connected between a side of each limit plate (37) close to the fixed jaw plate (13) and an inner wall of the limit groove (36); A first piston plate (54) arranged transversely is slidably connected to the interior of the first chamber (51), and the first piston plate (54) divides the interior of the first chamber (51) into a fourth chamber (55) and a fifth chamber (56); The second chamber (52) is located above the first chamber (51); a second piston plate (57) disposed transversely is slidably connected inside the second chamber (52); a sliding rod (58) fixedly connected to the bottom of the second piston plate (57) and connected to the first piston plate (54); the sliding rod (58) is sealingly slidably connected to the movable jaw plate (14); The third chamber (53) is located above the second chamber (52), and a fourth elastic member (511) is connected between the other side of the third piston plate (59) and the inner wall of the third chamber (53).

2. The equipment for preparing recycled building materials from construction waste according to claim 1, characterized in that: An air inlet hole (512) communicating with the fourth chamber (55) is provided inside the first fixed chamber (31).

3. The equipment for preparing recycled building materials from construction waste according to claim 2, characterized in that: A guide groove (513) is provided inside the movable jaw plate (14), and the fifth chamber (56) is connected to the interior of the second fixed bin (41) through the guide groove (513).

4. The equipment for preparing recycled building materials from construction waste according to claim 3 is characterized in that: An exhaust hole (514) communicating with the second chamber (52) is provided inside the third chamber (53).

5. The equipment for preparing recycled building materials from construction waste according to claim 4, characterized in that: The interiors of the fifth chamber (56) and the second fixed chamber (41) are both filled with hydraulic oil.

6. The equipment for preparing recycled building materials from construction waste according to claim 5, characterized in that: When the first piston plate (54) moves to the bottom inside the first chamber (51), the first piston plate (54) drives the second piston plate (57) to move to the bottom inside the second chamber (52) via the sliding rod (58).

Images