Classified stone crushing device for constructional engineering

Abstract

The invention relates to the field of stone crushing equipment, in particular to a grading stone crushing device for constructional engineering, which comprises a box body and a screen arranged in the box body, a turnover mechanism for driving the screen to turn over is mounted on the box body, and the turnover mechanism comprises a turnover motor fixedly connected to the box body and a turnover shaft rotationally mounted in the box body; an output shaft of the overturning motor is fixedly connected with the overturning shaft, the overturning shaft is detachably connected with the screen, a locking mechanism used for locking the screen is installed on the box body, an installation opening is formed in the side, away from the overturning shaft, of the box body, and a cover plate is installed in the installation opening. And cleaning mechanisms for cleaning the screen mesh are mounted on the two sides of the screen mesh. The problem of waste caused by the screen is solved.

Description

Technical Field

[0001] The invention relates to the field of stone crushing equipment, in particular to a graded stone crushing device for construction engineering. Background Art

[0002] In construction work, stone is an indispensable base material. When facing different construction objects, the standards for stone size will also change. Therefore, it is often necessary to crush the stones so that they can meet the required size for construction.

[0003] In the related art, a grading stone crushing device for construction engineering includes a stone crushing box, four legs are fixedly connected to the bottom of the stone crushing box, a feed port is opened at the top of the stone crushing box, a feed hopper is fixedly connected to the feed port, two sets of crushing rollers are rotatably installed in the stone crushing box, and the two sets of crushing rollers are driven by a crushing motor, a discharge port is opened at the bottom of the stone crushing box, a receiving box is placed below the discharge port, a screen is placed inside the stone crushing box, the screen screen screens the stone crushing, an installation port is opened on one side of the stone crushing box, a blocking door is installed on the installation port, and when the screen is damaged after long-term use, the staff can replace the screen through the installation port.

[0004] With regard to the above-mentioned related technologies, during the screening of crushed stones, the crushed stones impact one side of the screen, causing wear of the screen on that side. When the screen is worn to a certain extent, the staff usually replaces the entire screen, resulting in waste of the screen. Summary of the invention

[0005] In order to solve the problem of waste caused by screen mesh, the present invention provides a grading stone crushing device for construction engineering.

[0006] The present invention provides a construction engineering grading stone crushing device adopts the following technical solution: A grading stone crushing device for construction engineering, comprising a box and a screen arranged in the box, a flipping mechanism for driving the screen to flip is installed on the box, the flipping mechanism comprises a flipping motor fixedly connected to the box and a flipping shaft rotatably installed inside the box, the output shaft of the flipping motor is fixedly connected to the flipping shaft, the flipping shaft is detachably connected to the screen, a locking mechanism for locking the screen is installed on the box, an installation opening is opened on the side of the box away from the flipping shaft, a cover plate is installed in the installation opening, and cleaning mechanisms for cleaning the screen are installed on both sides of the screen.

[0007] Preferably, a fixed plate is installed on the side wall of the screen, and the cleaning mechanism includes a cleaning reciprocating screw rotatably installed on the fixed plate, a cleaning scraper is slidably installed on the screen, the cleaning reciprocating screw is inserted into the cleaning scraper and is threadedly connected to the cleaning scraper, a first rotating shaft, a second rotating shaft and a third rotating shaft are rotatably installed on the screen, a first gear is fixedly connected to the first rotating shaft, a flip gear meshing with the first gear is fixedly connected to the flip shaft, a first conveyor belt is sleeved on the first rotating shaft and the second rotating shaft, the third rotating shaft and the cleaning reciprocating screw are connected via a bevel gear set, a fourth rotating shaft is rotatably installed on the screen, a second gear is fixedly connected to the second rotating shaft, a third gear is fixedly connected to the third rotating shaft, and a fourth gear meshing with the second gear and the third gear at the same time is fixedly connected to the fourth rotating shaft.

[0008] Preferably, the cleaning scraper is fixedly connected to a mounting plate, a cleaning guide rod is slidably mounted on the mounting plate, a cleaning push plate is fixedly connected to the bottom of the cleaning guide rod, a first spring is fixedly connected between the cleaning push plate and the mounting plate, a cleaning roller is rotatably mounted on the cleaning push plate, a plurality of cleaning columns are fixedly connected to the cleaning roller, and the plurality of cleaning columns can be respectively inserted into the mesh holes of the screen.

[0009] Preferably, a moving block is slidably installed on the screen, the fourth rotating shaft is rotatably installed on the moving block, a second spring is fixedly connected between the screen and the moving block, an abutment rod is fixedly connected to the fourth rotating shaft, the abutment rod can contact the inner wall of the box, an arc-shaped groove is provided on the inner wall of the box, the abutment rod can be inserted into the arc-shaped groove and slide along the arc-shaped groove, and guide slopes are formed at both ends of the arc-shaped groove.

[0010] Preferably, a first row outlet is provided on the side wall of the box body, the screen is inclined, and a lower side of the screen is close to the first row outlet, and an installation box that passes through the first row outlet is fixedly connected to the box body, and a loading mechanism is installed in the installation box, and the loading mechanism includes a second reciprocating screw rotatably installed in the installation box, and a loading plate is slidably installed in the installation box, the second reciprocating screw penetrates into the loading plate and is threadedly connected to the loading plate, the loading box is hingedly connected on the loading plate, the loading box is located below the first row outlet, and a positioning mechanism for locking the loading box is installed on the loading plate, the top of the box body is fixedly connected to the feed hopper, the feed hopper is fixedly connected to the guide plate, the loading box can move to above the guide plate, and the loading box is fixedly connected with a guide plate.

[0011] Preferably, the loading plate is integrally formed with a mounting block, the mounting block is provided with a positioning groove, the positioning mechanism comprises a positioning spring fixedly connected to the inner wall of the positioning groove and a positioning block slidably placed in the positioning groove, the positioning spring is fixedly connected to the positioning block, a positioning plug-in groove for inserting the positioning block is provided on the side wall of the loading box, a downwardly inclined positioning slope is formed on the end face of the positioning block away from the positioning spring, a positioning rod is passed through the top of the mounting block, the positioning rod is inserted into the positioning groove, an unlocking groove for inserting the positioning rod is provided on the top of the positioning block, an unlocking slope contacting the positioning rod is formed on the inner wall of the unlocking groove close to the positioning spring, and the positioning rod can contact the inner top surface of the mounting box.

[0012] Preferably, a crushing mechanism is installed on the box body, and the crushing mechanism includes a crushing motor fixedly connected to the box body, a fifth rotating shaft is rotatably installed on the receiving plate, a second conveyor belt is sleeved on the fifth rotating shaft and the output shaft of the crushing motor, the fifth rotating shaft and the second reciprocating screw are connected through a bevel gear set, and a blocking mechanism for blocking the first discharge outlet is installed on the box body.

[0013] Preferably, the blocking mechanism includes a blocking plate slidably mounted on the box body, an iron block is embedded in the blocking plate, a magnet used in conjunction with the iron block is embedded in the box body, a baffle is hingedly connected to the blocking plate, a torsion spring is sleeved on the hinge shaft installed in the baffle, and the baffle can contact the loading box.

[0014] Preferably, the box body is provided with a second discharge outlet located below the first discharge outlet, and the second discharge outlet is located above the loading box, and a material receiving mechanism is installed on the box body, and the material receiving mechanism includes a material receiving plate hingedly connected to the second discharge outlet, and the material receiving plate can be flipped to the bottom of the screen, and a threaded barrel is rotatably installed on the box body, a third reciprocating screw is passed through the threaded barrel, and the third reciprocating screw extends into the box body, and a connecting rod is hingedly connected between the third reciprocating screw and the material receiving plate, and a sixth rotating shaft is rotatably installed on the box body, and the sixth rotating shaft is connected to the threaded barrel by a bevel gear set, and a third conveyor belt is sleeved on the sixth rotating shaft and the output shaft of the flipping motor.

[0015] Preferably, the locking mechanism includes a locking rod passing through the box body, one end of the locking rod extending to the outside of the box body is fixedly connected to a pull plate, a locking spring is fixedly connected between the pull plate and the box body, both ends of the screen are provided with locking slots for inserting the locking rod, and the end of the locking rod away from the pull plate is formed with a locking inclined surface that can contact the screen.

[0016] In summary, the present invention includes at least the following beneficial technical effects: 1. When one side of the screen is worn, first lock the locking mechanism, then start the flip motor, the flip motor drives the flip shaft to rotate, the flip shaft drives the screen to rotate, so that the unworn side of the screen is flipped to the top, the screen can still screen the gravel, solving the problem of waste caused by the screen; 2. During the rotation of the screen, the flip shaft drives the cleaning reciprocating screw to rotate, and the cleaning reciprocating screw drives the cleaning scraper to move. The cleaning scraper cleans the gravel and impurities on the screen, protects the screen, and extends the service life of the screen; 3. In the process of screening the gravel with the screen, large pieces of gravel slide along the screen and fall into the feeding box through the first outlet, and the second reciprocating screw is rotated, and the second reciprocating screw drives the feeding plate to move, and the feeding plate drives the feeding box to move, and the feeding box drives the gravel to move. When the feeding box moves to the top of the guide plate, the positioning mechanism releases the lock on the feeding box, and the feeding box is turned over. Large pieces of gravel fall into the feed hopper along the guide plate and the guide plate, and the gravel is crushed again, so that the gravel is crushed more thoroughly. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a schematic diagram of the overall structure of a grading stone crushing device for construction engineering according to an embodiment of the present invention.

[0018] Figure 2 It is a schematic diagram of the back structure of a grading stone crushing device for construction engineering according to an embodiment of the present invention.

[0019] Figure 3 It is a schematic structural diagram of a crushing mechanism according to an embodiment of the present invention.

[0020] Figure 4 Schematic diagram of the structure of the screen according to the embodiment of the present invention.

[0021] Figure 5 It is a schematic structural diagram of a cleaning mechanism according to an embodiment of the present invention.

[0022] Figure 6 It is a schematic structural diagram of a cleaning roller according to an embodiment of the present invention.

[0023] Figure 7 2 is a schematic structural diagram of a fourth rotating shaft according to an embodiment of the present invention.

[0024] Figure 8 It is a structural schematic diagram of a blocking mechanism according to an embodiment of the present invention.

[0025] Fig. 9 It is a structural schematic diagram of a positioning mechanism according to an embodiment of the present invention.

[0026] Fig.10 Schematic diagram of the structure of the locking mechanism of the embodiment of the present invention.

[0027] Description of the accompanying drawings: 1, box body; 11, screen; 12, cover plate; 13, moving block; 14, second spring; 15, installation box; 16, feed hopper; 161, guide plate; 2, flip mechanism; 21, flip motor; 22, flip shaft; 221, flip gear; 222, square rod; 3, locking mechanism; 31, locking rod; 32, pull plate; 33, locking spring; 4, cleaning mechanism; 41, cleaning reciprocating screw; 42, cleaning scraper; 421, installation plate; 43, first rotating shaft; 431, first gear; 44, second rotating shaft; 441, second gear; 45, third rotating shaft; 451, third gear; 4 6. Fourth rotating shaft; 461. Fourth gear; 462. Abutment rod; 47. Cleaning push plate; 48. First spring; 49. Cleaning roller; 5. Feeding mechanism; 51. Second reciprocating screw; 52. Feeding plate; 521. Mounting block; 53. Feeding box; 531. Guide plate; 6. Positioning mechanism; 61. Positioning spring; 62. Positioning block; 63. Positioning plug rod; 7. Crushing mechanism; 71. Crushing motor; 72. Fifth rotating shaft; 8. Sealing mechanism; 81. Sealing plate; 82. Baffle; 9. Receiving mechanism; 91. Receiving plate; 92. Threaded barrel; 93. Third reciprocating screw; 94. Connecting rod; 95. Sixth rotating shaft. DETAILED DESCRIPTION

[0028] The following is combined with Figure 1 -Attached Fig.10 The present invention is described in further detail.

[0029] The embodiment of the present invention discloses a grading stone crushing device for construction engineering. Figures 1 to 5 The grading stone crushing device for construction engineering comprises a box body 1 and a screen 11 arranged in the box body 1, a flipping mechanism 2 for driving the screen 11 to flip is installed on the box body 1, the flipping mechanism 2 comprises a flipping motor 21 fixedly connected to the box body 1 and a flipping shaft 22 rotatably installed inside the box body 1, the output shaft of the flipping motor 21 is fixedly connected to the flipping shaft 22, the flipping shaft 22 is detachably connected to the screen 11, a square rod 222 is fixedly connected to the flipping shaft 22, a square groove for inserting the square rod 222 is provided on the screen 11, and a locking mechanism 3 for locking the screen 11 is installed on the box body 1 A mounting opening is provided on one side of the box body 1 away from the flip shaft 22, in which a cover plate 12 is installed, and the cover plate 12 is connected to the box body 1 by bolts. Cleaning mechanisms 4 for cleaning the screen 11 are installed on both sides of the screen 11; when one side of the screen 11 is worn, the locking mechanism 3 is first locked, and then the flip motor 21 is started, and the flip motor 21 drives the flip shaft 22 to rotate, and the flip shaft 22 drives the screen 11 to rotate, so that the unworn side of the screen 11 is flipped to the top, and the screen 11 can still screen the gravel, which solves the problem of waste caused by the screen 11.

[0030] Reference Figures 3 to 7 A fixed plate is installed on the side wall of the screen 11, and the cleaning mechanism 4 includes a cleaning reciprocating screw 41 rotatably installed on the fixed plate, a cleaning scraper 42 is slidably installed on the screen 11, the cleaning reciprocating screw 41 is penetrated into the cleaning scraper 42, and is threadedly connected to the cleaning scraper 42, a first rotating shaft 43, a second rotating shaft 44 and a third rotating shaft 45 are rotatably installed on the screen 11, a first gear 431 is fixedly connected to the first rotating shaft 43, a flip gear 221 meshing with the first gear 431 is fixedly connected to the flip shaft 22, a first conveyor belt is sleeved on the first rotating shaft 43 and the second rotating shaft 44, the third rotating shaft 45 and the cleaning reciprocating screw 41 are connected through a bevel gear set, a fourth rotating shaft 46 is rotatably installed on the screen 11, a second gear 441 is fixedly connected to the second rotating shaft 44, a third gear 451 is fixedly connected to the third rotating shaft 45, and a fourth rotating shaft 46 is fixedly connected There is a fourth gear 461 which is meshed with the second gear 441 and the third gear 451 at the same time; during the rotation of the screen 11, the flip shaft 22 drives the flip gear 221 to rotate, the flip gear 221 drives the first gear 431 to rotate, the first gear 431 drives the first rotating shaft 43 to rotate, the first rotating shaft 43 drives the second rotating shaft 44 to rotate, the second rotating shaft 44 drives the second gear 441 to rotate, the second gear 441 drives the fourth gear 461 to rotate, the fourth gear 461 drives the third gear 451 to rotate, the third gear 451 drives the third rotating shaft 45 to rotate, the third rotating shaft 45 drives the cleaning reciprocating screw 41 to rotate, the cleaning reciprocating screw 41 drives the cleaning scraper 42 to move, the cleaning scraper 42 cleans the gravel and impurities on the screen 11, protects the screen 11, and extends the service life of the screen 11.

[0031] Reference Figures 5 to 7 , a mounting plate 421 is fixedly connected to the cleaning scraper 42, a cleaning guide rod is slidably installed on the mounting plate 421, a cleaning push plate 47 is fixedly connected to the bottom of the cleaning guide rod, a first spring 48 is fixedly connected between the cleaning push plate 47 and the mounting plate 421, a cleaning roller 49 is rotatably installed on the cleaning push plate 47, a plurality of cleaning columns are fixedly connected to the cleaning roller 49, and the plurality of cleaning columns can be respectively inserted into the mesh holes of the screen 11; in the process of moving the cleaning scraper 42, the cleaning scraper 42 drives the cleaning push plate 47 to move, and the cleaning push plate 47 drives the cleaning roller 49 to move, and when the cleaning column is opposite to the mesh holes on the screen 11, the first spring 48 pushes the cleaning column to be inserted into the mesh holes on the screen 11, so as to clean the mesh holes on the screen 11 and further protect the screen 11.

[0032] Reference Figures 4 to 7, a moving block 13 is slidably installed on the screen 11, and the fourth rotating shaft 46 is rotatably installed on the moving block 13. A second spring 14 is fixedly connected between the screen 11 and the moving block 13, and a contact rod 462 is fixedly connected to the fourth rotating shaft 46, and the contact rod 462 can contact the inner wall of the box body 1. An arc-shaped groove is provided on the inner wall of the box body 1, and the contact rod 462 can be inserted into the arc-shaped groove and slide along the arc-shaped groove. Both ends of the arc-shaped groove are formed with guide inclined surfaces; when the screen 11 is flipped over, the second spring 14 pushes the moving block 13 to move, and the moving block 13 drives the fourth rotating shaft 46 to move, and the fourth rotating shaft 46 drives the contact rod 462 to insert into the arc-shaped groove. At the same time, the fourth rotating shaft 46 drives the fourth gear 461 to move, so that the fourth gear 461 is separated from the second gear 441 and the third gear 451. When the screen 11 is flipped over again, the cleaning mechanism 4 at the bottom of the screen 11 will not be started.

[0033] Reference Figure 3 A first row of outlets is provided on the side wall of the box body 1, the screen 11 is inclined, and the lower side of the screen 11 is close to the first row of outlets. A mounting box 15 that passes through the first row of outlets is fixedly connected to the box body 1, and a feeding mechanism 5 is installed in the mounting box 15. The feeding mechanism 5 includes a second reciprocating screw 51 that is rotatably installed in the mounting box 15, and a feeding plate 52 is slidably installed in the mounting box 15. The second reciprocating screw 51 penetrates the feeding plate 52 and is threadedly connected to the feeding plate 52. A feeding box 53 is hingedly connected to the feeding plate 52. The feeding box 53 is located below the first row of outlets, and a positioning mechanism 6 for locking the feeding box 53 is installed on the feeding plate 52. A feed hopper 16 is fixedly connected to the top of the box body 1, and a guide plate 16 is fixedly connected to the feed hopper 16 1, the loading box 53 can be moved to the top of the guide plate 161, and the guide plate 531 is fixedly connected to the loading box 53; in the process of the screen 11 screening the crushed stones, the large pieces of crushed stones slide along the screen 11 and fall into the loading box 53 through the first outlet, and the second reciprocating screw 51 is rotated, and the second reciprocating screw 51 drives the loading plate 52 to move, and the loading plate 52 drives the loading box 53 to move, and the loading box 53 drives the crushed stones to move. When the loading box 53 moves to the top of the guide plate 161, the positioning mechanism 6 releases the locking of the loading box 53, and the loading box 53 is turned over, and the large pieces of crushed stones fall into the feed hopper 16 along the guide plate 531 and the guide plate 161, and the crushed stones are crushed again, so that the crushed stones are crushed more thoroughly.

[0034] Reference Figures 3 to 9The loading plate 52 is integrally formed with a mounting block 521, and a positioning groove is provided on the mounting block 521. The positioning mechanism 6 includes a positioning spring 61 fixedly connected to the inner wall of the positioning groove and a positioning block 62 slidably placed in the positioning groove. The positioning spring 61 is fixedly connected to the positioning block 62. A positioning plug-in slot for inserting the positioning block 62 is provided on the side wall of the loading box 53. A downwardly inclined positioning slope is formed on the end surface of the positioning block 62 away from the positioning spring 61. A positioning plug rod 63 is passed through the top of the mounting block 521. The positioning plug rod 63 is inserted into the positioning groove, and the positioning block 6 2 is provided with an unlocking groove for inserting the positioning rod 63, and an unlocking inclined surface contacting the positioning rod 63 is formed on the inner wall of the unlocking groove close to the positioning spring 61, and the positioning rod 63 can contact the inner top surface of the installation box 15; during the movement of the loading plate 52, the loading plate 52 drives the positioning rod 63 to move, and when the positioning rod 63 contacts the inner top surface of the installation box 15, the positioning rod 63 moves, and the positioning rod 63 pushes the positioning block 62 to move, so that the positioning block 62 is pulled out of the positioning insertion groove, and the loading box 53 can be turned over.

[0035] Reference Figure 3 A crushing mechanism 7 is installed on the box body 1, and the crushing mechanism 7 includes a crushing motor 71 fixedly connected to the box body 1, and a fifth rotating shaft 72 is rotatably installed on the receiving plate 15. A second conveyor belt is sleeved on the fifth rotating shaft 72 and the output shaft of the crushing motor 71, and the fifth rotating shaft 72 is connected to the second reciprocating screw 51 through a bevel gear set. A blocking mechanism 8 for blocking the first discharge outlet is installed on the box body 1; start the crushing motor 71, the crushing motor 71 drives the crushing roller to crush the stone, and at the same time, the crushing motor 71 drives the fifth rotating shaft 72 to rotate, and the fifth rotating shaft 72 drives the second reciprocating screw 51 to rotate, so that the large pieces of gravel can be crushed again.

[0036] Reference Figure 3 and Figure 8 The blocking mechanism 8 includes a blocking plate 81 slidably mounted on the box body 1, an iron block is embedded in the blocking plate 81, and a magnet used in conjunction with the iron block is embedded in the box body 1. A baffle 82 is hingedly connected to the blocking plate 81, and a torsion spring is sleeved on the hinge shaft installed in the baffle 82, so that the baffle 82 can contact the feeding box 53; during the movement of the feeding box 53, the feeding box 53 can push the baffle 82 to move, and the baffle 82 drives the blocking plate 81 to move, and the blocking plate 81 blocks the first discharge outlet to prevent gravel from falling into the installation box 15 during the feeding process.

[0037] Reference Figures 3 to 8The box body 1 is provided with a second row outlet located below the first row outlet, and the second row outlet is located above the loading box 53. A material receiving mechanism 9 is installed on the box body 1, and the material receiving mechanism 9 includes a material receiving plate 91 hingedly connected to the second row outlet, and the material receiving plate 91 can be flipped to the bottom of the screen 11. A threaded barrel 92 is rotatably installed on the box body 1, and a third reciprocating screw 93 is passed through the threaded barrel 92. The third reciprocating screw 93 extends into the box body 1, and a connecting rod 94 is hingedly connected between the third reciprocating screw 93 and the material receiving plate 91. A sixth rotating shaft 95 is rotatably installed on the box body 1, and a conical shaft is formed between the sixth rotating shaft 95 and the threaded barrel 92. The gear set is connected, and the third conveyor belt is sleeved on the sixth rotating shaft 95 and the output shaft of the flipping motor 21; in the process of flipping the screen 11, the flipping motor 21 drives the sixth rotating shaft 95 to rotate, the sixth rotating shaft 95 drives the threaded cylinder 92 to rotate, the threaded cylinder 92 drives the third reciprocating screw 93 to move, the third reciprocating screw 93 drives the connecting rod 94 to move, and the connecting rod 94 drives the receiving plate 91 to flip, so that the receiving plate 91 flips to the bottom of the screen 11, and the gravel scraped off the screen 11 can fall on the receiving plate 91, and fall into the feeding box 53 along the receiving plate 91 to continue to crush the large pieces of gravel.

[0038] Reference Figures 3 to 10 The locking mechanism 3 includes a locking rod 31 that passes through the box body 1, and the locking rod 31 extends to the outside of the box body 1. One end is fixedly connected to a pull plate 32, and a locking spring 33 is fixedly connected between the pull plate 32 and the box body 1. Both ends of the screen 11 are provided with locking slots for the locking rod 31 to be inserted, and the end of the locking rod 31 away from the pull plate 32 is formed with a locking inclined surface that can contact the screen 11; the pull plate 32 is moved, and the pull plate 32 drives the locking rod 31 to move, so that the locking rod 31 is pulled out of the locking slot, and the screen 11 can be flipped, which is convenient for the staff to operate.

[0039] The implementation principle of a grading stone crushing device for construction engineering in an embodiment of the present invention is as follows: when one side of the screen 11 is worn, the pull plate 32 is first moved, and the pull plate 32 drives the locking rod 31 to move, so that the locking rod 31 is pulled out of the locking slot, and then the flip motor 21 is started, and the flip motor 21 drives the flip shaft 22 to rotate, and the flip shaft 22 drives the screen 11 to rotate, so that the unworn side of the screen 11 is flipped upward, and at the same time the flip shaft 22 drives the cleaning reciprocating screw 41 to rotate, and the cleaning reciprocating screw 41 drives the cleaning scraper 42 to move, and the cleaning scraper 42 scrapes the crushed stones and impurities on the screen 11 onto the receiving plate 91, and falls into the upper In the material box 53, and in the process of moving the cleaning scraper 42, the cleaning scraper 42 drives the cleaning push plate 47 to move, and the cleaning push plate 47 drives the cleaning roller 49 to move. When the cleaning column is opposite to the mesh holes on the screen 11, the first spring 48 pushes the cleaning column to insert into the mesh holes on the screen 11 to clean the mesh holes on the screen 11. When the screen 11 is flipped over, the second spring 14 pushes the abutment rod 462 to insert into the arc-shaped groove. At the same time, the fourth rotating shaft 46 drives the fourth gear 461 to move, so that the fourth gear 461 is separated from the second gear 441 and the third gear 451. When the screen 11 is flipped over again, the cleaning mechanism 4 at the bottom of the screen 11 will not start.

[0040] The above are all preferred embodiments of the present invention, and are not intended to limit the protection scope of the present invention. Therefore, any equivalent changes made based on the structure, shape, and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. A grading stone crushing device for construction engineering, comprising a box (1) and a screen (11) arranged in the box (1), characterized in that: The box (1) is provided with a flipping mechanism (2) for driving the screen (11) to flip, the flipping mechanism (2) comprising a flipping motor (21) fixedly connected to the box (1) and a flipping shaft (22) rotatably mounted inside the box (1), the output shaft of the flipping motor (21) being fixedly connected to the flipping shaft (22), the flipping shaft (22) being detachably connected to the screen (11), the box (1) being provided with a locking mechanism (3) for locking the screen (11), a mounting opening being provided on a side of the box (1) away from the flipping shaft (22), a cover plate (12) being mounted in the mounting opening, and cleaning mechanisms (4) for cleaning the screen (11) being mounted on both sides of the screen (11).

2. A grading stone crushing device for construction engineering according to claim 1, characterized in that: A fixing plate is mounted on the side wall of the screen (11); the cleaning mechanism (4) comprises a cleaning reciprocating screw (41) rotatably mounted on the fixing plate; a cleaning scraper (42) is slidably mounted on the screen (11); the cleaning reciprocating screw (41) is inserted into the cleaning scraper (42) and is threadedly connected to the cleaning scraper (42); a first rotating shaft (43), a second rotating shaft (44) and a third rotating shaft (45) are rotatably mounted on the screen (11); a first gear (431) is fixedly connected to the first rotating shaft (43); a gear (432) is fixedly connected to the first gear (431) on the flip shaft (22); and a gear (433) is fixedly connected to the first gear (431) on the flip shaft (22). The invention relates to a screen (11) comprising a first rotating shaft (43) and a second rotating shaft (44) which are meshed with each other, a first conveyor belt being sleeved on the first rotating shaft (43) and the second rotating shaft (44), the third rotating shaft (45) and the cleaning reciprocating screw (41) being connected via a bevel gear set, a fourth rotating shaft (46) being rotatably mounted on the screen (11), a second gear (441) being fixedly connected to the second rotating shaft (44), a third gear (451) being fixedly connected to the third rotating shaft (45), and a fourth gear (461) being meshed with both the second gear (441) and the third gear (451) being fixedly connected to the fourth rotating shaft (46).

3. A grading stone crushing device for construction engineering according to claim 2, characterized in that: The cleaning scraper (42) is fixedly connected to a mounting plate (421), a cleaning guide rod is slidably mounted on the mounting plate (421), a cleaning push plate (47) is fixedly connected to the bottom of the cleaning guide rod, a first spring (48) is fixedly connected between the cleaning push plate (47) and the mounting plate (421), a cleaning roller (49) is rotatably mounted on the cleaning push plate (47), a plurality of cleaning columns are fixedly connected to the cleaning roller (49), and the plurality of cleaning columns can be respectively inserted into the meshes of the screen (11).

4. The grading stone crushing device for construction engineering according to claim 2, characterized in that: A moving block (13) is slidably mounted on the screen (11), the fourth rotating shaft (46) is rotatably mounted on the moving block (13), a second spring (14) is fixedly connected between the screen (11) and the moving block (13), an abutment rod (462) is fixedly connected to the fourth rotating shaft (46), the abutment rod (462) is capable of contacting the inner wall of the box body (1), an arc-shaped groove is provided on the inner wall of the box body (1), the abutment rod (462) is capable of being inserted into the arc-shaped groove and sliding along the arc-shaped groove, and both ends of the arc-shaped groove are formed with guiding inclined surfaces.

5. The grading stone crushing device for construction engineering according to claim 1, characterized in that: A first discharge outlet is provided on the side wall of the box body (1); the screen (11) is arranged obliquely, and a lower side of the screen (11) is close to the first discharge outlet; a mounting box (15) which is in communication with the first discharge outlet is fixedly connected to the box body (1); a feeding mechanism (5) is installed in the mounting box (15); the feeding mechanism (5) comprises a second reciprocating screw (51) rotatably mounted in the mounting box (15); a feeding plate (52) is slidably mounted in the mounting box (15); the second reciprocating screw (51) is inserted into the feeding plate (52); The loading box (53) is hingedly connected to a loading plate (52), and the loading box (53) is located below the first discharge port. A positioning mechanism (6) for locking the loading box (53) is installed on the loading plate (52). A feed hopper (16) is fixedly connected to the top of the box body (1), and a guide plate (161) is fixedly connected to the feed hopper (16). The loading box (53) can be moved to the top of the guide plate (161), and a guide plate (531) is fixedly connected inside the loading box (53).

6. A grading stone crushing device for construction engineering according to claim 5, characterized in that: A mounting block (521) is integrally formed on the loading plate (52), and a positioning groove is formed on the mounting block (521). The positioning mechanism (6) includes a positioning spring (61) fixedly connected to the inner wall of the positioning groove and a positioning block (62) slidably placed in the positioning groove. The positioning spring (61) is fixedly connected to the positioning block (62). A positioning insertion groove for inserting the positioning block (62) is formed on the side wall of the loading box (53). A downwardly inclined positioning slope is formed on the end surface of the positioning block (62) away from the positioning spring (61). A positioning rod (63) is passed through the top of the mounting block (521), and the positioning rod (63) is inserted into the positioning groove. An unlocking groove for inserting the positioning rod (63) is formed on the inner wall of the unlocking groove close to the positioning spring (61). The positioning rod (63) can contact the inner top surface of the mounting box (15).

7. The grading stone crushing device for construction engineering according to claim 5, characterized in that: A crushing mechanism (7) is mounted on the housing (1), the crushing mechanism (7) comprising a crushing motor (71) fixedly connected to the housing (1), a fifth rotating shaft (72) is rotatably mounted on the receiving plate (15), a second conveyor belt is sleeved on the fifth rotating shaft (72) and the output shaft of the crushing motor (71), the fifth rotating shaft (72) and the second reciprocating screw (51) are connected via a bevel gear set, and a blocking mechanism (8) for blocking the first discharge outlet is mounted on the housing (1).

8. The grading stone crushing device for construction engineering according to claim 7, characterized in that: The blocking mechanism (8) comprises a blocking plate (81) slidably mounted on the box body (1), an iron block being embedded in the blocking plate (81), a magnet used in conjunction with the iron block being embedded in the box body (1), a baffle plate (82) being hingedly connected to the blocking plate (81), a torsion spring being sleeved on a hinge shaft mounted in the baffle plate (82), and the baffle plate (82) being capable of contacting the loading box (53).

9. The grading stone crushing device for construction engineering according to claim 5, characterized in that: The box body (1) is provided with a second discharge outlet located below the first discharge outlet, and the second discharge outlet is located above the loading box (53). A material receiving mechanism (9) is installed on the box body (1), and the material receiving mechanism (9) comprises a material receiving plate (91) hingedly connected to the second discharge outlet, and the material receiving plate (91) can be turned over to the bottom of the screen (11). A threaded barrel (92) is rotatably installed on the box body (1), and a third reciprocating screw (93) is inserted through the threaded barrel (92). The third reciprocating screw (93) extends into the box body (1), and a connecting rod (94) is hingedly connected between the third reciprocating screw (93) and the material receiving plate (91). A sixth rotating shaft (95) is rotatably installed on the box body (1), and the sixth rotating shaft (95) is connected to the threaded barrel (92) via a bevel gear set. A third conveyor belt is sleeved on the sixth rotating shaft (95) and the output shaft of the turning motor (21).

10. The grading stone crushing device for construction engineering according to claim 1, characterized in that: The locking mechanism (3) comprises a locking rod (31) penetrating the box body (1); one end of the locking rod (31) extending outside the box body (1) is fixedly connected to a pull plate (32); a locking spring (33) is fixedly connected between the pull plate (32) and the box body (1); both ends of the screen (11) are provided with locking slots for the locking rod (31) to be inserted; and one end of the locking rod (31) away from the pull plate (32) is formed with a locking inclined surface capable of contacting the screen (11).

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