A sand and stone screening device for construction engineering

Abstract

The utility model relates to the field of building engineering discloses a sandstone screening device for building engineering, including the fixed frame, the top fixed mounting of fixed frame has the sandstone screening box, the bottom fixed mounting of sandstone screening box has the conical unloading frame, the utility model has the following advantages and effect: through setting up the sandstone screening classification unloading subassembly, after sandstone screening is completed, control second motor drives driving shaft and sandstone screening board to carry out inclined rotation at this moment, sandstone screening board can press down the discharge baffle of one side after rotating, the guide rod can guide the discharge baffle, can let the discharge baffle slide into the inboard of storage groove after being stressed, and let the sandstone that sandstone screening board top does not pass screening falls down from the right side of sandstone screening box, and is guided and is discharged through the inclined guide plate, so that the device does not need staff to operate manually, can let personnel labor intensity reduce.

Description

Technical Field

[0001] This utility model relates to the field of building engineering technology, and in particular to a sand and gravel screening device for building engineering. Background Technology

[0002] The purpose of screening sand and gravel in construction projects is to ensure that the quality and specifications of sand and gravel meet the needs of construction projects, improve the construction quality and safety of construction projects, and make the screened sand and gravel more suitable for use in concrete, asphalt and other building materials. This can ensure the construction quality and performance of construction projects, thereby improving the durability and stability of construction projects.

[0003] In the existing technology, during the screening of sand and gravel, a large amount of sand and gravel will accumulate on the top of the screening plate. Workers need to use tools such as shovels above the screening device to clear the sand and gravel to prevent accumulation. After screening, sand and gravel that do not pass the screening need to be removed by workers using shovels or scrapers. The existing device makes the work of workers very labor-intensive. Utility Model Content

[0004] The above-mentioned technical objective of this utility model is achieved through the following technical solution: a sand and gravel screening device for construction engineering, including a fixed frame, a sand and gravel screening box fixedly installed on the top of the fixed frame, a conical feeding frame fixedly installed on the bottom of the sand and gravel screening box, a limit box and a protective slope fixedly installed between the inner walls of the left and right sides of the sand and gravel screening box, and a sand and gravel screening anti-accumulation component provided above the sand and gravel screening box and the limit box.

[0005] The sand and gravel screening anti-accumulation component includes a first motor, a lead screw, a limiting rod, a moving frame, a rotating shaft, a first transmission gear, a rack, and a dredging and stirring rod. The first motor is fixedly installed on one inner wall of the sand and gravel screening box. The lead screw is fixedly installed on the output end of the first motor. The limiting rod is fixedly installed between the left and right inner walls of the sand and gravel screening box. The moving frame is threaded onto the outside of the lead screw and slidably installed on the outside of the limiting rod. The rotating shaft is rotatably installed on the inside of the moving frame. The first transmission gear is fixedly installed on the outside of the rotating shaft. The rack is fixedly installed on the top of the limiting box. The first transmission gear and the rack mesh with each other. The dredging and stirring rod is fixedly installed around the outside of the rotating shaft.

[0006] Preferably, an inclined guide plate is fixedly installed on the right side of the sand and gravel screening box, a discharge trough is opened on the right side of the sand and gravel screening box, a collection trough is opened at the bottom of the discharge trough, and a sand and gravel screening and sorting feeding component is provided above the sand and gravel screening box and the collection trough.

[0007] Preferably, the sand and gravel screening anti-accumulation component further includes a mounting plate, an auxiliary shaft, a second transmission gear, and impact blocks. The mounting plate is fixedly installed on the rear side of the sand and gravel screening box, the auxiliary shaft is rotatably installed on the inner side of the mounting plate, the second transmission gear is fixedly installed on the outer side of the auxiliary shaft and the lead screw, and two adjacent impact blocks mesh with each other. The impact blocks are fixedly installed on the outer side of the auxiliary shaft.

[0008] Preferably, the sand and gravel screening and sorting feeding assembly includes a second motor, a drive shaft, and a sand and gravel screening plate. The second motor is fixedly installed on the front side of the sand and gravel screening box, the drive shaft is fixedly installed on the output end of the second motor, and the sand and gravel screening plate is fixedly installed on the outside of the drive shaft.

[0009] Preferably, the sand and gravel screening and sorting feeding assembly further includes guide rods, springs, and discharge baffles. The two guide rods are fixedly installed on the bottom inner wall of the receiving trough, the discharge baffles are slidably installed on the outside of the guide rods, one end of the spring is fixedly installed on the bottom of the discharge baffles, and the other end of the spring is fixedly installed on the bottom inner wall of the receiving trough.

[0010] Preferably, the top of the sand and gravel screening plate is provided with multiple screening holes, and the left and right sides of the sand and gravel screening plate are provided with arc-shaped chamfers.

[0011] Preferably, the protective slope is triangular in shape, the top of the limiting box has a limiting groove, and the movable frame is slidably installed inside the limiting groove.

[0012] By adopting the above technical solution, the limiting groove can limit and guide the moving frame, allowing the moving frame to drive the dredging and mixing rod to move left and right for dredging.

[0013] Preferably, the discharge baffle is L-shaped, and a discharge through hole is provided at the top of the discharge baffle.

[0014] By adopting the above technical solution, the L-shaped discharge baffle can make the sand and gravel screening plate rotate and come into contact with it, which can increase the contact area with the sand and gravel screening plate.

[0015] Preferably, the striking block is made of rubber and is elliptical in shape.

[0016] By adopting the above technical solution, the rubber striking block can deform during the striking process, resulting in a greater striking force, which in turn allows the device to vibrate and prevents the screening holes from becoming clogged.

[0017] Preferably, the bottom of the discharge baffle is provided with a guide groove, and the guide rod is in contact with the guide groove.

[0018] By adopting the above technical solution, the guide groove can effectively limit the discharge baffle. After the sand and gravel screening plate rotates, it can apply a downward force to the discharge baffle. After the discharge baffle is subjected to force, it can only move along the guide rod through the guide groove, which can make the movement of the discharge baffle more stable.

[0019] The beneficial effects of this utility model are:

[0020] 1. This utility model, through the sand and gravel screening anti-accumulation component, the auger lifting device can lift the sand and gravel and allow the sand and gravel to be fed into the inner side of the sand and gravel screening box. During the feeding process, the first motor is controlled to drive the lead screw to rotate. After the lead screw rotates, it can drive the moving frame to move through the thread engagement. During the movement, the rotating shaft above the moving frame can rotate through the meshing of the first transmission gear and the rack. After the rotating shaft rotates, it can drive the unblocking stirring rod to rotate to unblock the sand and gravel above the sand and gravel screening plate and prevent blockage.

[0021] 2. This utility model, through the sand and gravel screening and sorting feeding component, allows the second motor to drive the drive shaft and the sand and gravel screening plate to tilt and rotate after the sand and gravel screening is completed. After the sand and gravel screening plate rotates, it can press down the discharge baffle on one side. The guide rod can guide the discharge baffle, allowing it to slide into the inner side of the collection trough after being subjected to force. The sand and gravel that have not passed the screening above the sand and gravel screening plate will fall from the right side of the sand and gravel screening box and be guided and discharged by the inclined guide plate. This device does not require manual operation by the staff, which can reduce the labor intensity of the staff. Attached Figure Description

[0022] To more clearly illustrate the technical solutions in the embodiments of this utility model, the drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0023] Figure 1 This is a schematic diagram of the structure of a sand and gravel screening device for construction engineering proposed in this utility model.

[0024] Figure 2 This is a rear view structural diagram of a sand and gravel screening device for construction engineering proposed in this utility model.

[0025] Figure 3 This is a cross-sectional structural diagram of a sand and gravel screening device for construction engineering proposed in this utility model.

[0026] Figure 4 This is a partial structural diagram of the unblocking stirring rod proposed in this utility model.

[0027] Figure 5 This is a partial structural schematic diagram of a sand and gravel screening device for construction engineering proposed in this utility model.

[0028] In the diagram: 1. Sand and gravel screening anti-accumulation component; 2. Sand and gravel screening and sorting feeding component; 3. Fixing frame; 4. Sand and gravel screening box; 5. Conical feeding frame; 6. Inclined guide plate; 7. Limiting box; 8. Protective slope; 9. Collection trough.

[0029] 11. First motor; 12. Lead screw; 13. Limiting rod; 14. Moving frame; 15. Rotating shaft; 16. First transmission gear; 17. Rack; 18. Unclogging and stirring rod; 19. Mounting plate; 20. Auxiliary shaft; 21. Second transmission gear; 22. Impacting block;

[0030] 23. Second motor; 24. Drive shaft; 25. Sand and gravel screening plate; 26. Guide rod; 27. Spring; 28. Discharge baffle. Detailed Implementation

[0031] See Figure 1 , Figure 2 , Figure 3 , Figure 4 and Figure 5 This utility model provides a sand and gravel screening device for construction engineering, including a fixed frame 3, a sand and gravel screening box 4 fixedly installed on the top of the fixed frame 3, a conical feeding rack 5 fixedly installed on the bottom of the sand and gravel screening box 4, a limit box 7 and a protective slope 8 fixedly installed between the inner walls of the left and right sides of the sand and gravel screening box 4, and a sand and gravel screening anti-accumulation component 1 provided above the sand and gravel screening box 4 and the limit box 7.

[0032] The sand and gravel screening anti-accumulation component 1 includes a first motor 11, a lead screw 12, a limiting rod 13, a moving frame 14, a rotating shaft 15, a first transmission gear 16, a rack 17, and a dredging and stirring rod 18. The first motor 11 is fixedly installed on one side of the inner wall of the sand and gravel screening box 4. The lead screw 12 is fixedly installed on the output end of the first motor 11. The limiting rod 13 is fixedly installed between the left and right inner walls of the sand and gravel screening box 4. The moving frame 14 is threaded on the outside of the lead screw 12 and slidably installed on the outside of the limiting rod 13. The rotating shaft 15 is rotatably installed on the inside of the moving frame 14. The first transmission gear 16 is fixedly installed on the outside of the rotating shaft 15. The rack 17 is fixedly installed on the top of the limiting box 7. The first transmission gear 16 and the rack 17 mesh with each other. The dredging and stirring rod 18 is fixedly installed around the outside of the rotating shaft 15.

[0033] In this embodiment, an inclined guide plate 6 is fixedly installed on the right side of the sand and gravel screening box 4, a discharge trough is opened on the right side of the sand and gravel screening box 4, a collection trough 9 is opened at the bottom of the discharge trough, and a sand and gravel screening and sorting feeding component 2 is arranged above the sand and gravel screening box 4 and the collection trough 9.

[0034] In this embodiment, the sand and gravel screening anti-accumulation component 1 also includes a mounting plate 19, an auxiliary shaft 20, a second transmission gear 21, and a striking block 22. The mounting plate 19 is fixedly installed on the rear side of the sand and gravel screening box 4. The auxiliary shaft 20 is rotatably installed on the inner side of the mounting plate 19. The second transmission gear 21 is fixedly installed on the outer side of the auxiliary shaft 20 and the lead screw 12. Two adjacent striking blocks 22 mesh with each other, and the striking blocks 22 are fixedly installed on the outer side of the auxiliary shaft 20.

[0035] In this embodiment, the sand and gravel screening and sorting feeding assembly 2 includes a second motor 23, a drive shaft 24, and a sand and gravel screening plate 25. The second motor 23 is fixedly installed on the front side of the sand and gravel screening box 4, the drive shaft 24 is fixedly installed on the output end of the second motor 23, and the sand and gravel screening plate 25 is fixedly installed on the outside of the drive shaft 24.

[0036] In this embodiment, the sand and gravel screening and sorting feeding assembly 2 also includes guide rods 26, springs 27 and discharge baffles 28. The two guide rods 26 are fixedly installed on the bottom inner wall of the receiving trough 9, the discharge baffle 28 is slidably installed on the outside of the guide rods 26, one end of the spring 27 is fixedly installed on the bottom of the discharge baffle 28, and the other end of the spring 27 is fixedly installed on the bottom inner wall of the receiving trough 9.

[0037] In this embodiment, the top of the sand and gravel screening plate 25 is provided with multiple screening holes, and the left and right sides of the sand and gravel screening plate 25 are provided with arc-shaped chamfers; the arc-shaped chamfers can prevent the sand and gravel screening plate 25 from colliding during the rotation inside the sand and gravel screening box 4, and make the rotation of the sand and gravel screening plate 25 more stable.

[0038] In this embodiment, the protective ramp 8 is triangular in shape, and a limiting groove is provided on the top of the limiting box 7. The movable frame 14 is slidably installed on the inner side of the limiting groove.

[0039] In this embodiment, the discharge baffle 28 is L-shaped, and a discharge through hole is provided at the top of the discharge baffle 28; the discharge through hole makes it easy to prevent the material screened above the sand and gravel screening plate 25 from accumulating above the discharge baffle 28.

[0040] In this embodiment, the striking block 22 is made of rubber and is elliptical in shape. When the striking block 22 strikes the sand and gravel screening box 4, it can cause the sand and gravel screening box 4 to vibrate and keep the sand and gravel inside the sand and gravel screening box 4 in a vibrating state, so that the sand and gravel above the sand and gravel screening plate 25 will not clog the inside of the filter mesh.

[0041] In this embodiment, a guide groove is provided at the bottom of the discharge baffle 28, and the guide rod 26 fits into the guide groove; the guide groove allows the discharge baffle 28 to slide only above the guide rod 26, which makes the discharge baffle 28 move more stably inside the receiving groove 9.

[0042] The specific operation is as follows: the sand and gravel are lifted by the auger lifting device and fed into the inner side of the sand and gravel screening box 4. During the feeding process, the first motor 11 is controlled to drive the lead screw 12 to rotate. After the lead screw 12 rotates, it can drive the moving frame 14 to move through the threaded engagement. During the movement, the rotating shaft 15 above the moving frame 14 can rotate through the meshing of the first transmission gear 16 and the rack 17. After the rotating shaft 15 rotates, it can drive the unblocking stirring rod 18 to rotate to unblock the sand and gravel above the sand and gravel screening plate 25 and prevent blockage.

[0043] After the lead screw 12 rotates, it can drive the auxiliary shaft 20 to rotate through the second transmission gear 21 on the outside. After the auxiliary shaft 20 rotates, it can drive the rubber striking block 22 to rotate and strike. When the striking block 22 strikes the sand and gravel screening box 4, it can make the sand and gravel screening box 4 vibrate and keep the sand and gravel inside the sand and gravel screening box 4 in a vibrating state, so that the sand and gravel above the sand and gravel screening plate 25 will not clog the filter screen.

[0044] After the sand and gravel screening is completed, the second motor 23 can be controlled to drive the drive shaft 24 and the sand and gravel screening plate 25 to tilt and rotate. After the sand and gravel screening plate 25 rotates, it can press down the discharge baffle 28 on one side. The guide rod 26 can guide the discharge baffle 28, allowing the discharge baffle 28 to slide into the inner side of the collection tank 9 after being subjected to force. The sand and gravel that have not passed the screening above the sand and gravel screening plate 25 will fall from the right side of the sand and gravel screening box 4 and be guided and discharged by the inclined guide plate 6. This device does not require manual operation by the staff, which can reduce the labor intensity of the staff.

Claims

1. A sand and gravel screening device for construction engineering, characterized in that, include: A fixed frame (3) is provided, on the top of which a sand and gravel screening box (4) is fixedly installed, and a conical feeding rack (5) is fixedly installed at the bottom of the sand and gravel screening box (4). A limit box (7) and a protective ramp (8) are fixedly installed between the inner walls of the left and right sides of the sand and gravel screening box (4). A sand and gravel screening anti-accumulation component (1) is provided above the sand and gravel screening box (4) and the limit box (7). The sand and gravel screening anti-accumulation component (1) includes a first motor (11), a lead screw (12), a limiting rod (13), a moving frame (14), a rotating shaft (15), a first transmission gear (16), a rack (17), and a dredging and stirring rod (18). The first motor (11) is fixedly installed on one side of the inner wall of the sand and gravel screening box (4). The lead screw (12) is fixedly installed at the output end of the first motor (11). The limiting rod (13) is fixedly installed between the left and right inner walls of the sand and gravel screening box (4). The movable frame (14) is threaded on the outside of the lead screw (12), the movable frame (14) is slidably mounted on the outside of the limiting rod (13), the rotating shaft (15) is rotatably mounted on the inside of the movable frame (14), the first transmission gear (16) is fixedly mounted on the outside of the rotating shaft (15), the rack (17) is fixedly mounted on the top of the limiting box (7), the first transmission gear (16) and the rack (17) mesh with each other, and the unblocking stirring rod (18) is fixedly mounted on the outside of the rotating shaft (15) for one circumference.

2. The sand and gravel screening device for construction engineering according to claim 1, characterized in that, An inclined guide plate (6) is fixedly installed on the right side of the sand and gravel screening box (4). A discharge trough is opened on the right side of the sand and gravel screening box (4). A collection trough (9) is opened at the bottom of the discharge trough. A sand and gravel screening and sorting feeding component (2) is set above the sand and gravel screening box (4) and the collection trough (9).

3. The sand and gravel screening device for construction engineering according to claim 1, characterized in that, The sand and gravel screening anti-accumulation component (1) also includes a mounting plate (19), an auxiliary shaft (20), a second transmission gear (21), and a striking block (22). The mounting plate (19) is fixedly installed on the rear side of the sand and gravel screening box (4). The auxiliary shaft (20) is rotatably installed on the inner side of the mounting plate (19). The second transmission gear (21) is fixedly installed on the outer side of the auxiliary shaft (20) and the lead screw (12). Two adjacent striking blocks (22) mesh with each other. The striking blocks (22) are fixedly installed on the outer side of the auxiliary shaft (20).

4. The sand and gravel screening device for construction engineering according to claim 2, characterized in that, The sand and gravel screening and sorting feeding assembly (2) includes a second motor (23), a drive shaft (24), and a sand and gravel screening plate (25). The second motor (23) is fixedly installed on the front side of the sand and gravel screening box (4), the drive shaft (24) is fixedly installed on the output end of the second motor (23), and the sand and gravel screening plate (25) is fixedly installed on the outside of the drive shaft (24).

5. A sand and gravel screening device for construction engineering according to claim 2, characterized in that, The sand and gravel screening and sorting feeding assembly (2) also includes guide rods (26), springs (27) and discharge baffles (28). The two guide rods (26) are fixedly installed on the bottom inner wall of the receiving trough (9). The discharge baffles (28) are slidably installed on the outside of the guide rods (26). One end of the spring (27) is fixedly installed on the bottom of the discharge baffles (28), and the other end of the spring (27) is fixedly installed on the bottom inner wall of the receiving trough (9).

6. A sand and gravel screening device for construction engineering according to claim 4, characterized in that, The top of the sand and gravel screening plate (25) is provided with multiple screening holes, and the left and right sides of the sand and gravel screening plate (25) are provided with arc-shaped chamfers.

7. A sand and gravel screening device for construction engineering according to claim 1, characterized in that, The protective ramp (8) is triangular in shape, and a limiting groove is provided on the top of the limiting box (7). The movable frame (14) is slidably installed on the inner side of the limiting groove.

8. A sand and gravel screening device for construction engineering according to claim 5, characterized in that, The discharge baffle (28) is L-shaped, and a discharge through hole is provided on the top of the discharge baffle (28).

9. A sand and gravel screening device for construction engineering according to claim 3, characterized in that, The striking block (22) is made of rubber and is elliptical in shape.

10. A sand and gravel screening device for construction engineering according to claim 5, characterized in that, The bottom of the discharge baffle (28) is provided with a guide groove, and the guide rod (26) is in contact with the guide groove.

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