Gravel screening device for road and bridge engineering construction

Abstract

The gravel screening device for road and bridge engineering construction comprises a base, the top of the base is fixedly connected with a vertically-arranged side plate, the outer side wall of the side plate is fixedly connected with a first motor, and the output end of the first motor is fixedly connected with a rotating shaft. The vibrating mechanism, the feeding mechanism, the screening barrel, the first motor, the second motor and the driving mechanism are used in cooperation, the screening barrel can deflect around the rotating shaft, gravel is fully screened through repeated screening, and the problem that in the prior art, after the gravel enters a barrel body, the screening efficiency is high is solved. According to the device, the problems that gravel particles in a second collecting tank are different in size and secondary reworking screening is needed due to the fact that the gravel particles in the second collecting tank are different in size due to the fact that the gravel particles in the second collecting tank are different in size when the gravel particles in the second collecting tank are stacked on the bottom of the barrel under the action of gravity and small gravel particles are stacked at the bottom of the barrel at the moment are solved, and the practicability of the device is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of road and bridge engineering, in particular to a sand and gravel screening device for road and bridge engineering construction. Background Art

[0002] Road and bridge engineering can be divided into the following categories based on their structure: roadbed, pavement, bridges, culverts, tunnels, drainage, protection, landscaping, traffic engineering, and electromechanical engineering. Standardized unit projects are divided into: roadbed engineering, pavement engineering, bridge engineering, interchange engineering, tunnel engineering, environmental protection engineering, traffic safety facilities, electromechanical engineering, and building construction engineering. Road and bridge engineering also includes urban rail transit and railway engineering.

[0003] Among them, patent No. CN217369134U discloses a sand and gravel screening device for road and bridge engineering construction, including an outer cylinder, an inner barrel, a first support plate, a screening hole, a discharge hopper and a supporting cross plate. The rotation of the rotating end of the motor drives the first pulley to rotate, and the first pulley drives the second pulley to rotate through a belt, thereby driving the inner barrel to rotate to screen the sand and gravel entering the inner barrel. The sand and gravel smaller than the aperture of the screening hole passes through the screening hole and falls into the discharge hopper, and is then discharged through the discharge hopper. Since the inner barrel is inclined, the sand and gravel larger than the aperture of the screening hole moves toward the discharge port, so that larger particles of sand and gravel are discharged through the discharge port, and there is no need for personnel to clean up the larger particles of sand and gravel, which is more convenient to operate. The smaller particles of sand and gravel fall into the first collecting trough through the discharge hopper for collection, and the larger particles of sand and gravel fall into the second collecting trough through the discharge port for collection.

[0004] This device has the following shortcomings: since the screening cylinder is inclined, when the sand and gravel enter the cylinder, the accumulated sand and gravel will fall to the bottom of the cylinder under the action of gravity. At this time, the bottom of the barrel will also accumulate sand and gravel with smaller particles, which will then enter the second collecting tank. As a result, the sand and gravel particles in the second collecting tank are of different sizes, requiring secondary rework and screening. Therefore, a sand and gravel screening device for road and bridge engineering construction is proposed to solve the problem. Utility Model Content

[0005] The purpose of the utility model is to solve the problems existing in the prior art and to propose a sand and gravel screening device for road and bridge engineering construction.

[0006] In order to achieve the above purpose, the present invention adopts the following technical solutions:

[0007] A sand and gravel screening device for road and bridge engineering construction comprises a base, a vertically arranged side plate is fixedly connected to the top of the base, a first motor is fixedly connected to the outer wall of the side plate, an output end of the first motor is fixedly connected to a rotating shaft, an end of the rotating shaft passes through the side plate and is fixedly connected to a fixed cover, the rotating shaft is rotatably connected to the side plate, the side wall of the fixed cover is provided with two symmetrically arranged rotating ports, the inner side walls of the two rotating ports are rotatably connected to the same screening drum, the screening drum is connected to a feeding mechanism, the outer wall of the fixed cover is fixedly connected to the fixed plate, the fixed plate is connected to a driving mechanism, the outer wall of the side plate is fixedly connected to two symmetrically arranged top plates, the top plate is connected to a vibration mechanism, and a first collecting frame and a second collecting frame are respectively provided on the top of the base;

[0008] The vibration mechanism includes a telescopic rod fixedly connected to the bottom of the top plate, a collision block fixedly connected to the bottom of the telescopic rod, a buffer spring sleeved on the outer wall of the telescopic rod, and two ends of the buffer spring fixedly connected to the bottom of the top plate and the outer wall of the buffer spring respectively;

[0009] Preferably, the inner side wall of the rotating opening is provided with a plurality of grooves, and balls are provided in each of the plurality of grooves.

[0010] Preferably, the feeding mechanism includes a feeding funnel, the bottom of the feeding funnel is connected to an arc-shaped feeding pipe, the end of the screening cylinder is provided with a feeding port, the end of the feeding pipe is rotatably connected to the inner wall of the feeding port, and a one-way valve is provided on the feeding pipe.

[0011] Preferably, the driving mechanism includes a second motor fixedly connected to the outer wall of the fixed plate, the output end of the second motor is fixedly connected to a driving shaft, the driving shaft passes through the fixed plate and is fixedly connected to a second gear, the outer wall of the screening drum is fixedly sleeved with a first gear, and the first gear and the second gear are meshingly connected.

[0012] Preferably, a discharge port is provided at one end of the screening drum away from the feed pipe, and a threaded plug is threadedly connected to the inner side wall of the discharge port.

[0013] Preferably, two symmetrically arranged material guide plates are fixedly connected to the bottom side wall of the fixed cover, and the two material guide plates are arranged at an angle, and the material guide plates are located directly above the first collecting frame.

[0014] Compared with the prior art, the present invention has the following advantages:

[0015] The utility model uses a vibration mechanism, a feeding mechanism, a screening drum, a first motor, a second motor and a driving mechanism in coordination, so that the screening drum can be deflected around the rotating shaft, and the sand and gravel are fully screened through repeated screening. This solves the problem in the prior art that, after the sand and gravel enter the drum, the accumulated sand and gravel will fall to the bottom of the drum under the action of gravity, and at this time, sand and gravel with smaller particles will also accumulate at the bottom of the drum, and then the sand and gravel with smaller particles will also enter the second collecting trough, resulting in the sand and gravel particles in the second collecting trough being of different sizes, and requiring secondary rework and screening, thereby improving the practicality of the device. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 This is a schematic diagram of the three-dimensional internal structure of a sand and gravel screening device for road and bridge engineering construction proposed by the utility model;

[0017] Figure 2 This is a schematic diagram of the three-dimensional external structure of a sand and gravel screening device for road and bridge engineering construction proposed by the utility model;

[0018] Figure 3 This is a schematic diagram of the cross-sectional structure of a fixed cover in a sand and gravel screening device for road and bridge engineering construction proposed by the utility model;

[0019] Figure 4 This is a schematic diagram of the connection structure between the fixed cover and the guide plate in a sand and gravel screening device for road and bridge engineering construction proposed by the utility model;

[0020] Figure 5 This is a schematic diagram of the connection structure between the screening cylinder and the threaded plug in a sand and gravel screening device for road and bridge engineering construction proposed by the utility model;

[0021] Figure 6 The utility model is a schematic diagram of the connection structure of the telescopic rod, the impact block and the buffer spring in the sand and gravel screening device for road and bridge engineering construction proposed by the present invention.

[0022] In the figure: 1. Base; 2. Side panel; 3. First motor; 4. Rotating shaft; 5. Fixed cover; 6. Screening drum; 7. First gear; 8. Second gear; 9. Fixed plate; 10. Second motor; 11. Drive shaft; 12. Feed pipe; 13. Feed hopper; 14. One-way valve; 15. Guide plate; 16. First collecting frame; 17. Second collecting frame; 18. Ball bearing; 19. Top plate; 20. Telescopic rod; 21. Impact block; 22. Buffer spring; 23. Threaded plug. DETAILED DESCRIPTION

[0023] The technical solutions in the embodiments of the present invention will be described clearly and completely 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.

[0024] Reference Figure 1-6 A sand and gravel screening device for road and bridge engineering construction includes a base 1, a vertically arranged side plate 2 is fixedly connected to the top of the base 1, a first motor 3 is fixedly connected to the outer wall of the side plate 2, an output end of the first motor 3 is fixedly connected to a rotating shaft 4, an end of the rotating shaft 4 passes through the side plate 2 and is fixedly connected to a fixed cover 5, the rotating shaft 4 is rotatably connected to the side plate 2, and the side wall of the fixed cover 5 is provided with two symmetrically arranged rotating ports, and the inner side walls of the two rotating ports are rotatably connected to the same screening drum 6, wherein the screening drum 6 located in the fixed cover 4 is provided with screening holes, thereby screening the sand and gravel in the screening drum 6;

[0025] The inner wall of the rotating port is provided with a plurality of grooves, and a ball 18 is provided in each of the plurality of grooves. The screening drum 6 is connected to a feeding mechanism, which includes a feeding funnel 13. The bottom of the feeding funnel 13 is connected to a feeding pipe 12 with an arc-shaped arrangement. A feeding port is provided at the end of the screening drum 6. The end of the feeding pipe 12 is rotatably sleeved with the inner side wall of the feeding port. A one-way valve 14 is provided on the feeding pipe 12, wherein the one-way valve 14 is a prior art and will not be described in detail herein. By providing the one-way valve 14, when the end of the screening drum 6 provided with one end of the feeding funnel 13 is facing downward, sand and gravel will not fall from the feeding port of the screening drum 6;

[0026] The end of the screening drum 6 away from the feed pipe 12 is provided with a discharge port, the inner side wall of the discharge port is threadedly connected to a threaded plug 23, the outer side wall of the fixed cover 5 is fixedly connected to a fixed plate 9, the fixed plate 9 is connected to a driving mechanism, the driving mechanism includes a second motor 10 fixedly connected to the outer side wall of the fixed plate 9, the output end of the second motor 10 is fixedly connected to a drive shaft 11, the drive shaft 11 passes through the fixed plate 9 and is fixedly connected to a second gear 8, the outer side wall of the screening drum 6 is fixedly sleeved with a first gear 7, and the first gear 7 is meshed with the second gear 8;

[0027] The outer wall of the side plate 2 is fixedly connected to two symmetrically arranged top plates 19, and the top plate 19 is connected to a vibration mechanism, which includes a telescopic rod 20 fixedly connected to the bottom of the top plate 19, and a collision block 21 is fixedly connected to the bottom of the telescopic rod 20. The outer wall of the telescopic rod 20 is provided with a buffer spring 22, and the two ends of the buffer spring 22 are respectively fixedly connected to the bottom of the top plate 19 and the outer wall of the buffer spring 22. In order to avoid the phenomenon that small particles of sand and gravel densely clog the screening holes during the screening process, a vibration mechanism is provided. When the fixed cover 5 rotates under the action of the rotating shaft 4, the top of the fixed cover 5 will contact and collide with the collision block 21, and then under the action of the telescopic rod 20 and the buffer spring 22, the collision block 21 will collide with the fixed cover 5, thereby vibrating the screening drum 6, achieving an intermittent vibration effect, avoiding the phenomenon of sand and gravel clogging the screening drum 6, and ensuring smooth and sufficient screening operation;

[0028] A first collecting frame 16 and a second collecting frame 17 are respectively provided on the top of the base 1. Two symmetrically arranged guide plates 15 are fixedly connected to the bottom side wall of the fixed cover 5. The two guide plates 15 are arranged at an angle. The guide plates 15 are located directly above the first collecting frame 16. The guide plates 15 are installed at the lower end of the fixed cover 5 to ensure that the screened materials fall into the corresponding first collecting frame located on the base 1 according to the set trajectory.

[0029] The specific working principle of this utility model is as follows:

[0030] In the actual operation process, the material first enters the device through the feed funnel 13, and then enters the screening drum 6 through the feed pipe 12 connected to the feed port at the bottom. The feeding of sand and gravel can be controlled by the one-way valve 14 on the feed pipe 12 during this process. When the material is put into the rotating screening drum 6, the first motor 3 drives the rotating shaft 4 to rotate, thereby driving the fixed cover 5 to deflect. The first motor 3 is a servo motor, which makes the fixed cover 5 deflect around the rotating shaft 4. At the same time, the second motor 10 on the fixed plate 9 works with The second gear 8 is driven to rotate, which in turn drives the first gear 7 to rotate, and then the screening drum 6 is rotated around its own rotating port, and the balls 18 in the rolling port reduce the resistance of the screening drum 6 when it rotates, thereby ensuring smooth screening operation. Through this operation, small particles of sand and gravel will enter the first collecting frame 16 under the screening of the screening drum 6, and large particles of sand and gravel that cannot pass through the screening drum 6 will stay at the downward inclined end of the screening drum 6. By repeating the above operation many times, it is ensured that large and small particles of sand and gravel are completely distinguished. After screening many times, such as Figure 1 As shown, the end of the screening cylinder 6 is directed downward, and the threaded plug 23 is opened, so that large particles of sand and gravel enter the second collecting frame 17, thereby achieving screening of the sand and gravel and improving screening efficiency.

[0031] The above is only a preferred specific implementation method of the present invention, but the protection scope of the present invention is not limited to this. Any technician familiar with the technical field within the technical scope disclosed by the present invention can make equivalent replacements or changes based on the technical solution and utility model concept of the present invention, which should be covered by the protection scope of the present invention.

Claims

1. A sand and gravel screening device for road and bridge engineering construction, comprising a base (1), characterized in that: The top of the base (1) is fixedly connected to a vertically arranged side plate (2), the outer side wall of the side plate (2) is fixedly connected to a first motor (3), the output end of the first motor (3) is fixedly connected to a rotating shaft (4), the end of the rotating shaft (4) passes through the side plate (2) and is fixedly connected to a fixed cover (5), the rotating shaft (4) is rotatably connected to the side plate (2), the side wall of the fixed cover (5) is provided with two symmetrically arranged rotating ports, the inner side walls of the two rotating ports are rotatably connected to the same screening drum (6), the screening drum (6) is connected to a feeding mechanism, the outer side wall of the fixed cover (5) is fixedly connected to a fixed plate (9), the fixed plate (9) is connected to a driving mechanism, the outer side wall of the side plate (2) is fixedly connected to two symmetrically arranged top plates (19), the top plate (19) is connected to a vibration mechanism, and the top of the base (1) is respectively provided with a first collecting frame (16) and a second collecting frame (17); The vibration mechanism comprises a telescopic rod (20) fixedly connected to the bottom of the top plate (19), a collision block (21) fixedly connected to the bottom of the telescopic rod (20), a buffer spring (22) sleeved on the outer side wall of the telescopic rod (20), and two ends of the buffer spring (22) fixedly connected to the bottom of the top plate (19) and the outer side wall of the buffer spring (22) respectively; The inner side wall of the rotating mouth is provided with a plurality of grooves, and a ball (18) is provided in each of the plurality of grooves.

2. A sand and gravel screening device for road and bridge engineering construction according to claim 1, characterized in that: The feeding mechanism comprises a feeding funnel (13), the bottom of the feeding funnel (13) is connected to a feeding pipe (12) arranged in an arc shape, the end of the screening cylinder (6) is provided with a feeding port, the end of the feeding pipe (12) is rotatably sleeved with the inner side wall of the feeding port, and a one-way valve (14) is provided on the feeding pipe (12).

3. A sand and gravel screening device for road and bridge engineering construction according to claim 1, characterized in that: The driving mechanism comprises a second motor (10) fixedly connected to the outer wall of the fixed plate (9); an output end of the second motor (10) is fixedly connected to a driving shaft (11); the driving shaft (11) passes through the fixed plate (9) and is fixedly connected to a second gear (8); a first gear (7) is fixedly sleeved on the outer wall of the screening drum (6); the first gear (7) and the second gear (8) are meshed and connected.

4. A sand and gravel screening device for road and bridge construction according to claim 1, characterized in that: An end of the screening drum (6) away from the feed pipe (12) is provided with a discharge port, and a threaded plug (23) is threadedly connected to the inner side wall of the discharge port.

5. The sand and gravel screening device for road and bridge construction according to claim 1, characterized in that: Two symmetrically arranged material guide plates (15) are fixedly connected to the bottom side wall of the fixed cover (5), and the two material guide plates (15) are arranged at an angle. The material guide plates (15) are located directly above the first collecting frame (16).

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