Crushing equipment for construction engineering construction and crushing method thereof

Abstract

The invention discloses crushing equipment for construction engineering construction and a crushing method of the crushing equipment, and belongs to the field of crushers. The crushing equipment comprises a screening box, a partition plate is fixed in the screening box, the top of the screening box communicates with a crushing box, the top of the crushing box communicates with a discharging pipe, and an electromagnetic valve is installed on the outer surface of the discharging pipe; a crushing mechanism is arranged in the crushing box, the screening mechanism is arranged in the screening box, and the screening mechanism is used for screening crushed gravel. Through the arrangement of the screening mechanism and the screening part, after crushed gravel falls off, the gravel can be screened, unqualified gravel is left, through the arrangement of a material pouring mechanism and the mutual cooperation between the material pouring mechanism and the screening mechanism, the screening effect can be improved, a U-shaped frame can be turned over after screening, and the screening efficiency is improved. And after the fallen sandstones are screened, unqualified sandstones can be immediately poured down.

Description

Technical Field

[0001] The present invention relates to the technical field of crushers, and in particular to crushing equipment and a crushing method for construction engineering. Background Art

[0002] Sand and gravel are often used as high-quality building materials and concrete raw materials due to their good hardness and stable chemical properties and are widely used in construction projects such as houses, roads, highways, railways, and engineering. Since the shapes and sizes of different sand and gravel vary greatly, in order to obtain sand and gravel with relatively uniform shapes and sizes, crushers are usually used to process sand and gravel.

[0003] For example, in the Chinese patent application number 202211617860.0, a sand and gravel crushing and classification device for construction engineering is provided, in which a driving component is provided. The setting of the driving component plays an auxiliary role in the processing of sand and gravel. It can not only drive the crushing chamber to adjust its position, thereby realizing rapid crushing of sand and gravel, but also drive the screening chamber to move up and down, thereby facilitating the classification and screening of sand and gravel. The screening mechanism is set to crush the sand and gravel, and at the same time, the sand and gravel entering the crushing trough are crushed by the third auxiliary crushing knife and the second serrated knife, thereby improving the crushing efficiency and refinement of sand and gravel.

[0004] However, during the use of this type of crushing equipment, after the crushed sand and gravel are screened through the screen, unqualified sand and gravel will still remain on the screen. When the subsequent crushed sand and gravel fall and come into contact with these sand and gravel, the collision between the materials will cause the subsequent sand and gravel of qualified size to be damaged or crushed to a certain extent again, resulting in serious inconsistency in the size of sand and gravel.

[0005] Therefore, we propose a crushing device and a crushing method for construction engineering. Summary of the invention

[0006] The purpose of the present invention is to solve the problem in the prior art that after the crushed sand and gravel are screened by the screen, unqualified sand and gravel still remain on the screen. When the subsequent crushed sand and gravel fall and contact these sand and gravel, the collision between the materials will cause the subsequent sand and gravel of qualified size to be damaged or crushed to a certain extent again, resulting in serious inconsistency in the size of sand and gravel. A crushing equipment and a crushing method for construction engineering are proposed.

[0007] In order to achieve the above object, the present invention adopts the following technical solutions: A crushing device for construction engineering, comprising a screening box, a partition plate fixed inside the screening box, a crushing box connected to the top of the screening box, a feed pipe connected to the top of the crushing box, a solenoid valve installed on the outer surface of the feed pipe, a crushing mechanism arranged inside the crushing box, and further comprising: A screening mechanism is arranged in the screening box, and is used to screen the crushed sand and gravel; A material dumping mechanism installed on the screening mechanism, which is used to dump unqualified sand and gravel after each screening; A removal mechanism is arranged in the pouring mechanism, and is used to scrape off the sand and gravel on the pouring mechanism.

[0008] Preferably, the crushing mechanism includes two driving rods rotating in the crushing box through bearings, the outer surfaces of the driving rods are fixed with circular gears 1, the two circular gears 1 are meshed and connected, the outer surfaces of the circular gears 1 are fixed with crushing rollers, and the crushing box is equipped with a motor for driving one of the driving rods to rotate.

[0009] Preferably, the screening mechanism comprises a rectangular frame arranged in a screening box, a rotatable U-shaped frame is provided above the rectangular frame, filter holes are opened on the U-shaped frame, a connecting strip is fixed on the U-shaped frame, a material blocking cloth is connected between the connecting strip and the crushing box, and a screening part is provided in the screening box.

[0010] Preferably, the screening part includes an installation box connected to the screening box, a rotating rod 1 is rotated in the screening box through a bearing, a motor for driving the rotating rod 1 to rotate is installed on the screening box, a main bevel gear is fixed on the outer surface of the rotating rod 1, a secondary bevel gear is meshed on the outer surface of the main bevel gear, a rotating shaft is fixed at the axis center of the secondary bevel gear, a support block is fixed in the installation box, the rotating shaft is rotatably connected to the support block through a bearing, and a turntable is fixed on the end of the rotating shaft away from the secondary bevel gear.

[0011] Preferably, the screening part also includes a push pin fixed on a side of the turntable away from the rotating shaft, a push frame is slidably provided on the outer surface of the push pin, a connecting rod is fixed on the side of the push frame close to the rectangular frame, the connecting rod is slidably connected to the inner wall of the screening box, one end of the connecting rod away from the push frame is fixedly connected to the rectangular frame, a slider is fixed on the rectangular frame, and the slider slides on the outer surface of the rotating rod.

[0012] Preferably, the pouring mechanism includes a liquid storage cylinder fixed to the inner wall of the screening box, a piston disk 1 is sliding in the liquid storage cylinder, an extrusion rod is fixed on the piston disk 1, a force block is fixed to the end of the extrusion rod close to the slider, a spring 1 is sleeved on the outer surface of the extrusion rod, the two ends of the spring 1 are respectively fixedly connected to the liquid storage cylinder and the force block, an impact block is fixed to the bottom of the rectangular frame, the impact block corresponds to the position of the force block, the outer surface of the liquid storage cylinder is connected to a hose 1, a fixed cylinder is fixed on the rectangular frame, the end of the hose 1 away from the liquid storage cylinder is connected to the fixed cylinder, and the fixed cylinder A piston disc 2 is sliding inside, a moving rod is fixed on the piston disc 2, the moving rod is slidably connected to the fixed cylinder, a spring 2 is sleeved on the outer surface of the moving rod, the two ends of the spring 2 are respectively fixedly connected to the piston disc 2 and the fixed cylinder, a rectangular rack is fixed on the end of the moving rod away from the piston disc 2, a circular gear 2 is meshed on the outer surface of the rectangular rack, a rotating rod 2 is fixed at the axis of the circular gear 2, the rotating rod 2 is rotatably connected to the rectangular frame through a bearing, a connecting block is fixed on the U-shaped frame, the connecting block is fixed on the outer surface of the rotating rod 2, and a scraper portion is provided on the rectangular frame.

[0013] Preferably, the scraping part includes a roller fixed on the outer surface of the second rotating rod, a connecting rope is fixed on the outer surface of the roller, an auxiliary block is fixed to the bottom of the rectangular frame, the connecting rope is slidably connected to the auxiliary block, two push plates for scraping off sand and gravel are arranged in the U-shaped frame, the two push plates are fixedly connected by a fixed rod, the end of the connecting rope away from the roller is connected to one of the push plates, an extrusion block is fixed on the outer surface of the fixed rod, a fixed block is fixed on the top of the U-shaped frame, the fixed rod slides in the fixed block, a spring three is sleeved on the outer surface of the fixed rod, and the two ends of the spring three are respectively fixedly connected to the extrusion block and the fixed block.

[0014] Preferably, the removal mechanism includes a sector gear fixed to the end of the rotating rod 2 away from the circular gear 2, the outer surface of the sector gear is meshed with an arc-shaped rack, a cross bar is fixed on the arc-shaped rack, a mounting block is fixed on the end of the cross bar away from the arc-shaped rack, a vibration rod is fixed on the mounting block, a rectangular bar is fixed on the rectangular frame, a limit bar is fixed on the rectangular frame, a limit block is fixed on the bottom of the arc-shaped rack, and the limit block slides on the outer surface of the limit bar.

[0015] Preferably, an air cushion is fixed on the side of the rectangular strip close to the mounting block, the air cushion is connected to hose 2, hose 2 is connected to a branch pipe, air bags are fixed on the push plates, and one end of hose 2 and the branch pipe are respectively connected to two air bags.

[0016] A crushing method for construction engineering mainly comprises the following steps: Step A: When in use, the discharge pipe is connected to the external discharge device through a pipeline, and the sand and gravel in the discharge device falls onto the crushing roller through the pipeline and the discharge pipe. The motor is started to drive one of the driving rods to rotate, and the driving rod drives the circular gear 1 and the crushing roller to rotate. Since the two circular gears 1 are meshed, the two crushing rollers rotate in the same direction, thereby crushing the sand and gravel; Step B: After being crushed by the crushing roller, the sand and gravel will fall into the U-shaped frame, and the motor will be started to drive the rotating rod to rotate, and the rotating rod will drive the primary bevel gear and the secondary bevel gear to rotate, and the secondary bevel gear will drive the rotating shaft and the turntable to rotate, and the turntable will drive the push column to make a circular motion, thereby driving the push column to push the push frame and the connecting rod to move back and forth, and therefore, drive the rectangular frame and the U-shaped frame to move back and forth, so that it can screen the sand and gravel in the rectangular frame, and the qualified sand and gravel will fall through the filter holes, and the unqualified sand and gravel will remain in the U-shaped frame.

[0017] Compared with the prior art, the present invention has the following beneficial effects: 1. Through the setting of the screening mechanism and the screening part, after the crushed sand and gravel fall, the sand and gravel can be screened to leave unqualified sand and gravel. Through the setting of the pouring mechanism and the cooperation between it and the screening mechanism, not only the screening effect can be improved, but also the U-shaped frame can be turned over after screening. After the fallen sand and gravel are screened, the unqualified sand and gravel can be poured down immediately to avoid the unqualified sand and gravel from contacting with the subsequent sand and gravel, resulting in an increase in the number of subsequent screened sand and gravel, causing more extrusion and collision of sand and gravel, so that the qualified size of sand and gravel that falls subsequently will be damaged or crushed to a certain extent again, resulting in serious inconsistency in the size of sand and gravel.

[0018] 2. Through the setting of the scraping part, when the pouring mechanism flips the U-shaped frame to make the unqualified sand and gravel fall down, it can simultaneously drive the push plate to slide in the U-shaped frame. This design can not only push the sand and gravel in the U-shaped frame to fall, but also can use the push plate to scrape off the sand and gravel adhering to the inner wall of the U-shaped frame, further reducing the amount of unqualified sand and gravel remaining in the U-shaped frame, which is conducive to reducing the subsequent crushing of qualified sand and gravel.

[0019] 3. By setting up the removal mechanism, when the pouring mechanism flips the U-shaped frame to make the unqualified sand and gravel fall down, it can also simultaneously impact the rectangular frame. Through the impact, not only can the U-shaped frame vibrate to improve the screening effect, but also through the compression of the air cushion, the air bag expands, and the sand and gravel adhering to the outer surface of the air bag can fall off, avoiding the sand and gravel adhering to the inner wall of the push plate, and further reducing the amount of unqualified sand and gravel remaining in the U-shaped frame. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 This is a schematic diagram of the overall structure of a crushing device for construction engineering proposed by the present invention; Figure 2 This is a schematic diagram of the internal structure of the installation box and screening box of a crushing device for construction engineering proposed by the present invention; Figure 3 A crushing device for construction engineering proposed by the present invention Figure 2 A schematic diagram of the structure enlargement in the middle; Figure 4 A rear view schematic diagram of the internal structure of a screening box of a crushing device for construction engineering proposed by the present invention; Figure 5 This is a schematic front view of the internal structure of a screening box of a crushing device for construction engineering proposed by the present invention; Figure 6 This is a schematic diagram of the interior of a liquid storage cylinder of a crushing device for construction engineering proposed by the present invention; Figure 7 A crushing device for construction engineering proposed by the present invention Figure 6 A magnified schematic diagram of the structure at B in the middle; Figure 8 A three-dimensional schematic diagram of a U-shaped frame structure of a crushing device for construction engineering proposed by the present invention; Fig. 9 A crushing device for construction engineering proposed by the present invention Figure 6 A magnified schematic diagram of the structure at C in the middle; Fig.10 This is a bottom view schematic diagram of a rectangular frame structure of a crushing device for construction engineering proposed by the present invention; Fig.11 A crushing device for construction engineering proposed by the present invention Figure 6 Enlarged schematic diagram of the structure at point D in the middle.

[0021] In the figure: 1, screening box; 2, crushing box; 21, feeding pipe; 22, solenoid valve; 3, crushing mechanism; 31, driving rod; 32, circular gear 1; 33, crushing roller; 4, screening mechanism; 40, rectangular frame; 41, U-shaped frame; 42, filter hole; 43, connecting strip; 44, material blocking cloth; 45, screening part; 450, installation box; 451, rotating rod 1; 452, main bevel gear; 453, secondary bevel gear; 454, rotating shaft; 455, supporting block; 456, rotating disk; 457, pushing column; 458, pushing frame; 459, connecting rod; 4510, sliding block; 5, partition; 6, pouring mechanism; 61, liquid storage cylinder; 62, piston plate 1; 63, squeezing rod; 64, force block; 65, spring 1; 66. Hose one; 67. Fixed cylinder; 68. Piston disc two; 69. Moving rod; 610. Spring two; 611. Rectangular rack; 612. Circular gear two; 613. Rotating rod two; 614. Connecting block; 615. Impact block; 60. Scraper; 601. Roller; 602. Connecting rope; 603. Auxiliary block; 604. Push plate; 605. Fixed rod; 606. Extrusion block; 607. Fixed block; 608. Spring three; 7. Removal mechanism; 71. Fan gear; 72. Arc rack; 73. Cross bar; 74. Mounting block; 75. Vibrating rod; 76. Rectangular bar; 77. Limiting bar; 78. Limiting block; 771. Air cushion; 772. Hose two; 773. Branch; 774. Airbag. DETAILED DESCRIPTION

[0022] The technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the present invention.

[0023] Embodiment 1, refer to Figure 1-Figure 11 A crushing device for construction engineering, comprising a screening box 1, a partition 5 is fixed in the screening box 1, a crushing box 2 is connected to the top of the screening box 1, a feed pipe 21 is connected to the top of the crushing box 2, a solenoid valve 22 is installed on the outer surface of the feed pipe 21, a crushing mechanism 3 is arranged in the crushing box 2, and also includes: A screening mechanism 4 is arranged in the screening box 1, and the screening mechanism 4 is used to screen the crushed sand and gravel; A material dumping mechanism 6 installed on the screening mechanism 4 is used to dump unqualified sand and gravel after each screening; A removal mechanism 7 is arranged inside the pouring mechanism 6 , and is used for scraping off sand and gravel on the pouring mechanism 6 .

[0024] Furthermore, the crushing mechanism 3 includes two driving rods 31 rotating in the crushing box 2 through bearings, and circular gears 32 are fixed to the outer surfaces of the driving rods 31. The two circular gears 32 are meshed and connected, and crushing rollers 33 are fixed to the outer surfaces of the circular gears 32. A motor for driving one of the driving rods 31 to rotate is installed on the crushing box 2.

[0025] Furthermore, the screening mechanism 4 includes a rectangular frame 40 arranged in the screening box 1, a rotatable U-shaped frame 41 is provided above the rectangular frame 40, a filter hole 42 is opened on the U-shaped frame 41, a connecting strip 43 is fixed on the U-shaped frame 41, a material blocking cloth 44 is connected between the connecting strip 43 and the crushing box 2, and a screening part 45 is provided in the screening box 1.

[0026] Furthermore, the screening part 45 includes an installation box 450 connected to the screening box 1, a rotating rod 451 is rotated in the screening box 1 through a bearing, a motor for driving the rotating rod 451 to rotate is installed on the screening box 1, a main bevel gear 452 is fixed to the outer surface of the rotating rod 451, a secondary bevel gear 453 is meshed on the outer surface of the main bevel gear 452, a rotating shaft 454 is fixed at the axis center of the secondary bevel gear 453, a support block 455 is fixed in the installation box 450, the rotating shaft 454 is rotatably connected to the support block 455 through a bearing, and a turntable 456 is fixed to the end of the rotating shaft 454 away from the secondary bevel gear 453.

[0027] Furthermore, the screening part 45 also includes a push column 457 fixed on a side of the turntable 456 away from the rotating shaft 454, and a push frame 458 is slidably provided on the outer surface of the push column 457. A connecting rod 459 is fixed to the side of the push frame 458 close to the rectangular frame 40. The connecting rod 459 is slidably connected to the inner wall of the screening box 1, and one end of the connecting rod 459 away from the push frame 458 is fixedly connected to the rectangular frame 40. A slider 4510 is fixed on the rectangular frame 40, and the slider 4510 slides on the outer surface of the rotating rod 451.

[0028] Furthermore, the pouring mechanism 6 includes a liquid storage cylinder 61 fixed to the inner wall of the screening box 1, a piston disc 62 sliding inside the liquid storage cylinder 61, an extrusion rod 63 fixed on the piston disc 62, a force block 64 fixed on the end of the extrusion rod 63 close to the slider 4510, a spring 65 sleeved on the outer surface of the extrusion rod 63, the two ends of the spring 65 are respectively fixedly connected to the liquid storage cylinder 61 and the force block 64, a collision block 615 is fixed at the bottom of the rectangular frame 40, the collision block 615 corresponds to the position of the force block 64, the outer surface of the liquid storage cylinder 61 is connected to a hose 66, a fixed cylinder 67 is fixed on the rectangular frame 40, the end of the hose 66 away from the liquid storage cylinder 61 is connected to the fixed cylinder 67, and the fixed cylinder 67 slides inside. There is a piston disc 68, on which a moving rod 69 is fixed, which is slidably connected to the fixed cylinder 67, and a spring 610 is sleeved on the outer surface of the moving rod 69, and the two ends of the spring 610 are respectively fixedly connected to the piston disc 68 and the fixed cylinder 67, and a rectangular rack 611 is fixed to the end of the moving rod 69 away from the piston disc 68, and a circular gear 612 is meshed on the outer surface of the rectangular rack 611, and a rotating rod 613 is fixed at the axis of the circular gear 612, and the rotating rod 613 is rotatably connected to the rectangular frame 40 through a bearing, and a connecting block 614 is fixed on the U-shaped frame 41, and the connecting block 614 is fixed on the outer surface of the rotating rod 613, and a scraper part 60 is provided on the rectangular frame 40.

[0029] When in use, the discharge pipe 21 is connected to the external discharge device through a pipeline, and the sand and gravel in the discharge device fall onto the crushing roller 33 through the pipeline and the discharge pipe 21. The motor is started to drive one of the driving rods 31 to rotate, and the driving rod 31 drives the circular gear 1 32 and the crushing roller 33 to rotate. Since the two circular gears 1 32 are meshed, the two crushing rollers 33 rotate in the same direction, thereby crushing the sand and gravel. This is the existing technology, so it will not be described in detail here.

[0030] Considering that in the prior art, after the crushed sand and gravel are screened by the screen, the unqualified sand and gravel still remain on the screen. When the subsequent crushed sand and gravel fall and contact these sand and gravel, the collision between the materials will cause the subsequent qualified size of the sand and gravel to be damaged or crushed again to a certain extent, resulting in serious inconsistency in the size of the sand and gravel. The following improvements are now made: Through the setting of the U-shaped frame 41, when the sand and gravel are crushed by the crushing roller 33, they will fall into the U-shaped frame 41, and the blocking cloth 44 and the connecting strip 43 are connected, so that the fallen sand and gravel can enter the U-shaped frame 41 to prevent the sand and gravel from falling to the outside, and the motor is started to drive the rotating rod 451 to rotate, the rotating rod 451 drives the main bevel gear 452 and the secondary bevel gear 453 to rotate, the secondary bevel gear 453 drives the rotating shaft 454 and the rotating disk 456 to rotate, and the rotating disk 456 drives the push column 457 to do a circular motion. The rod 459 is slidably connected to the inner wall of the screening box 1 for limiting, so that the push column 457 can be driven to push the push frame 458 and the connecting rod 459 to move back and forth. Since the connecting rod 459 is connected to the rectangular frame 40, it drives the rectangular frame 40 and the U-shaped frame 41 to move back and forth, so that the sand and gravel in the rectangular frame 40 can be screened. The qualified sand and gravel fall through the filter hole 42, and the unqualified sand and gravel remain in the U-shaped frame 41. The slider 4510 slides on the outer surface of the rotating rod 451, so as to support the rectangular frame 40 and improve stability.

[0031] When the rectangular frame 40 and the U-shaped frame 41 move to the left, that is, move in the direction of the force block 64, since the positions of the force block 64 and the impact block 615 correspond to each other, when the rectangular frame 40 moves to the left and makes the impact block 615 contact with the force block 64, a leftward pressure will be generated on the force block 64, thereby driving the extrusion rod 63 and the piston plate 1 62 to slide to the left in the liquid storage cylinder 61, thereby squeezing the spring 1 65.

[0032] This design, through the contact between the impact block 615 and the force block 64, can make the impact block 615 and the rectangular frame 40 vibrate, thereby making the U-shaped frame 41 vibrate. In this way, during the single leftward movement of the U-shaped frame 41, the sand and gravel in the U-shaped frame 41 can be screened, so as to avoid the situation where the sand and gravel dropped from the previous batch remain in the U-shaped frame 41 due to incomplete screening when the U-shaped frame 41 is reset. In addition, when the piston plate 1 62 moves to the left in the liquid storage cylinder 61, it will squeeze the fluid in the liquid storage cylinder 61, so that the fluid enters the fixed cylinder 67 through the hose 1 66, and the piston plate 2 68 is squeezed by the fluid, and will move forward in the fixed cylinder 67, thereby driving the piston plate 2 68 and the rectangular rack 611 to move forward together, squeezing the spring 2 610. The rectangular rack 611 is meshed and connected with the circular gear 2 612. Therefore, the movement of the rectangular rack 611 will drive the circular gear 2 612 and the rotating rod 2 613 to rotate, and the rotating rod 2 613 will drive the connecting block 614 and the U-shaped frame 41 to flip, so that the unqualified sand and gravel in the U-shaped frame 41 will fall down. In this way, after the fallen sand and gravel are screened, the unqualified sand and gravel can be immediately poured down to avoid the unqualified sand and gravel from contacting with the subsequent sand and gravel, resulting in an increase in the number of subsequent screened sand and gravel, causing more extrusion and collision of the sand and gravel, so that the qualified size of the sand and gravel that falls subsequently will be damaged or crushed to a certain extent again, resulting in a situation where the size of the sand and gravel is seriously inconsistent. Through the setting of the partition 5, the qualified and unqualified sand and gravel are respectively dropped from different positions to avoid mixing together.

[0033] It should be noted that by installing the solenoid valve 22 on the discharge pipe 21 and electrically connecting it to the external PLC controller, the solenoid valve 22 can be controlled by the PLC controller to open at a fixed time so that the sand and gravel can fall intermittently. This can not only reduce the amount of sand and gravel screened each time and improve the screening effect, but also make the time for the crushed sand and gravel to fall correspond to the time for the U-shaped frame 41 to reset. After each screening of the sand and gravel and the unqualified sand and gravel are poured out, a new batch of crushed sand and gravel will be added to carry out the next screening work. The fluid can be one of water or oil.

[0034] Example 2, refer to Figure 1-Figure 11The scraper part 60 includes a roller 601 fixed on the outer surface of the rotating rod 613, a connecting rope 602 is fixed on the outer surface of the roller 601, an auxiliary block 603 is fixed on the bottom of the rectangular frame 40, the connecting rope 602 is slidably connected to the auxiliary block 603, two push plates 604 for scraping off sand and gravel are arranged in the U-shaped frame 41, the two push plates 604 are fixedly connected by a fixing rod 605, one end of the connecting rope 602 away from the roller 601 is connected to one of the push plates 604, an extrusion block 606 is fixed on the outer surface of the fixing rod 605, a fixing block 607 is fixed on the top of the U-shaped frame 41, the fixing rod 605 slides in the fixing block 607, a spring three 608 is sleeved on the outer surface of the fixing rod 605, and the two ends of the spring three 608 are respectively fixedly connected to the extrusion block 606 and the fixing block 607.

[0035] Although the screening mechanism 4 and the pouring mechanism 6 can screen the sand and gravel falling into the U-shaped frame 41 and pour out the unqualified sand and gravel, the unqualified sand and gravel in the U-shaped frame 41 cannot be completely poured out by simply rotating the U-shaped frame 41, resulting in unqualified sand and gravel remaining inside the rectangular frame 40 when it is reset. In this way, the contact between the sand and gravel and the sand and gravel that fall later will still cause collision with the qualified sand and gravel, causing the qualified sand and gravel to be broken again. The following improvements are now made: By setting the U-shaped frame 41 into a U shape and arranging two identical push plates 604 at its opening, the push plates 604 can slide in the U-shaped frame 41, and the push plates 604 are tightly fitted with the inner wall of the U-shaped frame 41, and are connected with the second rotating rod 613 through the roller 601. When the circular gear 2 612 drives the second rotating rod 613 to rotate to make the U-shaped frame 41 flip, the roller 601 is also driven to rotate synchronously, and is connected to the roller 601 through the connecting rope 602, so as to drive the connecting rope 602 to wrap around the outer surface of the roller 601. Since the other end of the connecting rope 602 is connected to the push plates 604, one of the push plates 604 can be pulled to slide through the winding of the connecting rope 602. Since the two push plates 604 are connected by the fixed rod 605, the two push plates 604 can be driven to slide in the U-shaped frame 41, so that unqualified sand and gravel in the U-shaped frame 41 are pushed to fall, and unqualified sand and gravel are prevented from remaining in The U-shaped frame 41 is in contact with the sand and gravel that falls subsequently, and the sand and gravel adhering to the inner wall of the U-shaped frame 41 can be scraped off by the movement of the push plate 604, further reducing the amount of unqualified sand and gravel remaining in the U-shaped frame 41, which is conducive to reducing the re-crushing of qualified sand and gravel that falls subsequently. The fixed rod 605 is slidably connected with the fixed block 607. When the push plate 604 moves, the fixed rod 605 will be driven to slide in the fixed block 607, so that the squeezing block 606 squeezes the spring three 608. This design can limit the push plate 604 and make the push plate 604 move more stably. Moreover, when the rectangular frame 40 is reset, the two push plates 604 can also be reset by the elastic force of the spring three 608. By passing the connecting rope 602 through the auxiliary block 603, the tension of the connecting rope 602 can be increased, thereby increasing the extension distance of the connecting rope 602, so that the push plate 604 can completely push the sand and gravel down.

[0036] Example 3, refer to Figure 1-Figure 11 The removal mechanism 7 includes a sector gear 71 fixed to the end of the rotating rod 613 away from the circular gear 612, the outer surface of the sector gear 71 is meshed with an arc-shaped rack 72, a cross bar 73 is fixed on the arc-shaped rack 72, a mounting block 74 is fixed on the end of the cross bar 73 away from the arc-shaped rack 72, a vibration rod 75 is fixed on the mounting block 74, a rectangular bar 76 is fixed on the rectangular frame 40, a limiting bar 77 is fixed on the rectangular frame 40, a limiting block 78 is fixed on the bottom of the arc-shaped rack 72, and the limiting block 78 slides on the outer surface of the limiting bar 77.

[0037] Furthermore, an air cushion 771 is fixed to the side of the rectangular strip 76 close to the mounting block 74 , the air cushion 771 is connected to a second hose 772 , the second hose 772 is connected to a branch pipe 773 , and air bags 774 are fixed to the push plate 604 , one end of the second hose 772 and the branch pipe 773 are respectively connected to the two air bags 774 .

[0038] Although the scraper 60 can scrape off the unqualified sand and gravel on the inner wall of the U-shaped frame 41, some of the sand and gravel will adhere to the inner wall of the push plate 604, resulting in the residue of unqualified sand and gravel. The following improvements are now made: The sector gear 71 is connected to the second rotating rod 613. When the second rotating rod 613 rotates to drive the U-shaped frame 41 to flip, the sector gear 71 will also be driven to rotate, so that the healthy teeth on the sector gear 71 rotate to mesh with the healthy teeth on the bottom wall of the arc-shaped rack 72, thereby driving the arc-shaped rack 72 and the cross bar 73 to move in the direction of the rectangular bar 76. The cross bar 73 drives the mounting block 74 to move in the direction of the rectangular bar 76, so that the vibration rod 75 contacts the rectangular bar 76, squeezes the air cushion 771, and makes the gas in the air cushion 771 enter the two air bags 774 through the hose 2 772 and the branch pipe 773, so that the air bags 774 expand and are connected to the push plate 604 through the air bags 774, so as to avoid sand. The sand and gravel adhere to the surface of the push plate 604, and the expansion of the airbag 774 can shake off the sand and gravel adhered to the surface of the airbag 774, avoiding the sand and gravel from adhering to the inner wall of the push plate 604, and further reducing the amount of unqualified sand and gravel remaining in the U-shaped frame 41, and the vibration rod 75 contacts with the rectangular bar 76, and impacts the rectangular bar 76 and the rectangular frame 40, so that the U-shaped frame 41 and the push plate 604 vibrate, which can further shake off the sand and gravel adhered to the surface of the airbag 774, so that the unqualified sand and gravel can be removed more cleanly, and the limit block 78 slides on the outer surface of the limit bar 77, so as to limit the arc rack 72 and improve the stability of the arc rack 72 and the cross bar 73 when moving.

[0039] It should be noted that another alternative to this design is: healthy teeth can also be installed on the top wall of the arc-shaped rack 72, and a motor can be installed on the rectangular frame 40 to drive the fan-shaped gear 71 to rotate. When the healthy teeth on the fan-shaped gear 71 are engaged with the healthy teeth on the top wall of the arc-shaped rack 72, the arc-shaped rack 72 and the vibration rod 75 will be driven to move to the left. When the healthy teeth on the fan-shaped gear 71 are engaged with the healthy teeth on the bottom wall of the arc-shaped rack 72, the arc-shaped rack 72 will be driven to move to the right. Therefore, the vibration rod 75 and the mounting block 74 can intermittently collide with the rectangular bar 76 and the air cushion 771, causing the air bag 774 to bulge intermittently, thereby improving the sand and gravel removal effect.

[0040] The above description is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes according to the technical scheme and inventive concept of the present invention within the technical scope disclosed by the present invention, which should be covered by the protection scope of the present invention.

Claims

1. A crushing device for construction engineering, comprising a screening box (1), a partition (5) fixed inside the screening box (1), a crushing box (2) connected at the top of the screening box (1), a feed pipe (21) connected at the top of the crushing box (2), a solenoid valve (22) installed on the outer surface of the feed pipe (21), a crushing mechanism (3) arranged inside the crushing box (2), characterized in that: Also includes: A screening mechanism (4) disposed in the screening box (1), the screening mechanism (4) being used to screen crushed sand and gravel; a material dumping mechanism (6) installed on the screening mechanism (4), wherein after each screening, the material dumping mechanism (6) is used to dump unqualified sand and gravel; A removal mechanism (7) is arranged inside the material dumping mechanism (6), and the removal mechanism (7) is used to scrape off sand and gravel on the material dumping mechanism (6).

2. A crushing device for construction engineering according to claim 1, characterized in that: The crushing mechanism (3) comprises two driving rods (31) which rotate in a crushing box (2) via bearings, a circular gear one (32) being fixed to the outer surface of each driving rod (31), the two circular gears one (32) being meshed and connected, a crushing roller (33) being fixed to the outer surface of each circular gear one (32), and a motor for driving one of the driving rods (31) to rotate is mounted on the crushing box (2).

3. A crushing device for construction engineering according to claim 1, characterized in that: The screening mechanism (4) comprises a rectangular frame (40) arranged in a screening box (1), a rotatable U-shaped frame (41) is arranged above the rectangular frame (40), a filter hole (42) is opened on the U-shaped frame (41), a connecting bar (43) is fixed on the U-shaped frame (41), a material blocking cloth (44) is connected between the connecting bar (43) and the crushing box (2), and a screening part (45) is arranged in the screening box (1).

4. A crushing device for construction engineering according to claim 3, characterized in that: The screening portion (45) comprises an installation box (450) connected to the screening box (1); a rotating rod (451) is rotatably provided in the screening box (1) via a bearing; a motor for driving the rotating rod (451) to rotate is installed on the screening box (1); a main bevel gear (452) is fixed to the outer surface of the rotating rod (451); a secondary bevel gear (453) is meshed with the outer surface of the main bevel gear (452); a rotating shaft (454) is fixed at the axis of the secondary bevel gear (453); a supporting block (455) is fixed in the installation box (450); the rotating shaft (454) is rotatably connected to the supporting block (455) via a bearing; and a rotating disk (456) is fixed to one end of the rotating shaft (454) away from the secondary bevel gear (453).

5. A crushing device for construction engineering according to claim 4, characterized in that: The screening portion (45) further comprises a push post (457) fixed to a side of the rotating disk (456) away from the rotating shaft (454); a push frame (458) is slidably mounted on the outer surface of the push post (457); a connecting rod (459) is fixed to the side of the pushing frame (458) close to the rectangular frame (40); the connecting rod (459) is slidably connected to the inner wall of the screening box (1); one end of the connecting rod (459) away from the pushing frame (458) is fixedly connected to the rectangular frame (40); a sliding block (4510) is fixed to the rectangular frame (40); and the sliding block (4510) slides on the outer surface of the rotating rod (451).

6. A crushing device for construction engineering according to claim 5, characterized in that: The material pouring mechanism (6) comprises a liquid storage cylinder (61) fixed to the inner wall of the screening box (1), a piston plate (62) slidingly arranged inside the liquid storage cylinder (61), an extrusion rod (63) fixed on the piston plate (62), a force block (64) fixed on one end of the extrusion rod (63) close to the slider (4510), a spring (65) sleeved on the outer surface of the extrusion rod (63), two ends of the spring (65) respectively fixedly connected to the liquid storage cylinder (61) and the force block (64), an impact block (615) fixed at the bottom of the rectangular frame (40), the impact block (615) corresponding to the position of the force block (64), a hose (66) connected to the outer surface of the liquid storage cylinder (61), a fixed cylinder (67) fixed on the rectangular frame (40), the hose (66) connected to the fixed cylinder (67) at one end away from the liquid storage cylinder (61), and a piston plate (62) slidingly arranged inside the liquid storage cylinder (61) A second piston disc (68) is provided, a moving rod (69) is fixed on the second piston disc (68), the moving rod (69) is slidably connected to the fixed cylinder (67), a second spring (610) is sleeved on the outer surface of the moving rod (69), the two ends of the second spring (610) are respectively fixedly connected to the second piston disc (68) and the fixed cylinder (67), a rectangular rack (611) is fixed on the end of the moving rod (69) away from the second piston disc (68), a second circular gear (612) is meshed on the outer surface of the rectangular rack (611), a second rotating rod (613) is fixed at the axis of the second circular gear (612), the second rotating rod (613) is rotatably connected to the rectangular frame (40) through a bearing, a connecting block (614) is fixed on the U-shaped frame (41), the connecting block (614) is fixed on the outer surface of the second rotating rod (613), and a scraper (60) is provided on the rectangular frame (40).

7. A crushing device for construction engineering according to claim 6, characterized in that: The scraper part (60) comprises a roller (601) fixed on the outer surface of the second rotating rod (613), a connecting rope (602) is fixed on the outer surface of the roller (601), an auxiliary block (603) is fixed at the bottom of the rectangular frame (40), the connecting rope (602) is slidably connected to the auxiliary block (603), and two push plates (604) for scraping sand and gravel are arranged in the U-shaped frame (41), and the two push plates (604) are fixedly connected by a fixing rod (605). One end of the rope (602) away from the roller (601) is connected to one of the push plates (604); an extrusion block (606) is fixed to the outer surface of the fixed rod (605); a fixed block (607) is fixed to the top of the U-shaped frame (41); the fixed rod (605) slides in the fixed block (607); a spring three (608) is sleeved on the outer surface of the fixed rod (605); and two ends of the spring three (608) are fixedly connected to the extrusion block (606) and the fixed block (607), respectively.

8. A crushing device for construction engineering according to claim 7, characterized in that: The removal mechanism (7) comprises a sector gear (71) fixed to an end of the second rotating rod (613) away from the second circular gear (612); an arc-shaped rack (72) is meshed on the outer surface of the sector gear (71); a cross bar (73) is fixed to the arc-shaped rack (72); a mounting block (74) is fixed to an end of the cross bar (73) away from the arc-shaped rack (72); a vibration rod (75) is fixed to the mounting block (74); a rectangular bar (76) is fixed to the rectangular frame (40); a limit bar (77) is fixed to the rectangular frame (40); a limit block (78) is fixed to the bottom of the arc-shaped rack (72); and the limit block (78) slides on the outer surface of the limit bar (77).

9. A crushing device for construction engineering according to claim 8, characterized in that: An air cushion (771) is fixed to the side of the rectangular strip (76) close to the mounting block (74); the air cushion (771) is connected to a second hose (772); the second hose (772) is connected to a branch pipe (773); air bags (774) are fixed to the push plate (604); one end of the second hose (772) and the branch pipe (773) are respectively connected to the two air bags (774).

10. A crushing method for construction engineering, comprising the crushing equipment for construction engineering according to claim 5, characterized in that: The main steps include: Step A: When in use, the discharge pipe (21) is connected to an external discharge device through a pipeline, and the sand and gravel in the discharge device falls onto the crushing roller (33) through the pipeline and the discharge pipe (21). The motor is started to drive one of the driving rods (31) to rotate, and the driving rod (31) drives the circular gear one (32) and the crushing roller (33) to rotate. Since the two circular gears one (32) are meshed, the two crushing rollers (33) rotate in the same direction, thereby crushing the sand and gravel; Step B: After being crushed by the crushing roller (33), the sand and gravel fall into the U-shaped frame (41), and the motor is started to drive the rotating rod (451) to rotate. The rotating rod (451) drives the primary bevel gear (452) and the secondary bevel gear (453) to rotate. The secondary bevel gear (453) drives the rotating shaft (454) and the rotating disk (456) to rotate. The rotating disk (456) drives the push column (457) to make a circular motion, thereby driving the push column (457) to push the push frame (458) and the connecting rod (459) to reciprocate left and right. Therefore, the rectangular frame (40) and the U-shaped frame (41) are driven to reciprocate left and right, so that the rectangular frame (40) and the U-shaped frame (41) are sieved. Qualified sand and gravel fall through the filter hole (42), and unqualified sand and gravel remain in the U-shaped frame (41).

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