CN209576835U - Material crushing and screening device for road and bridge construction - Google Patents

Abstract

The utility model relates to a kind of material crushing and screening devices of road and bridge construction, including casing and pedestal, casing to be fixedly mounted on pedestal, further include crushing mechanism and screening mechanism；Casing is set as hollow cylindrical tube；Crushing mechanism includes hopper and two rollers, and roller is horizontally disposed in casing and rotates driven by the motor along its axis, and two rollers are symmetrical arranged in casing axis two sides；The direction of two rollers rotation is two sides to third side to rotation；Screening mechanism includes sieve plate, plate washer, the first discharge nozzle and the second discharge nozzle；Loose slot is offered on casing inner wall；Sieve plate is circular slab, and sieve plate is horizontally disposed in casing and its edge is arranged in loose slot；Plate washer is horizontally set in casing and is located at below sieve plate；Sieve plate lower end is equipped with percussion mechanism, and percussion mechanism drives sieve plate to shake in vertical direction, and percussion mechanism is arranged in loose slot.The utility model can effectively improve the effect of screening plant screening.

Description

Material crushing and screening device for road and bridge construction

technical field

The utility model relates to the technical field of screening devices, in particular to a material crushing and screening device for road and bridge construction.

Background technique

At present, during the construction of pavement and bridge decks, screening devices are often used. The screens in the screening devices are used to allow some particles to pass through the screen holes, and materials such as sand and gravel are divided into different grades according to particle size. During the construction process, larger particles of gravel are sometimes encountered, which are inconvenient to use because of their large radius, so the materials need to be crushed and then screened.

Existing screening devices, such as the publication number CN206305028U, the application date is December 13, 2016, and the disclosure date is a screening machine provided by the utility model application document on July 7, 2017, by adding The capsule generates airflow in the screening machine, blows the materials in the screening machine, and increases the screening effect.

The above-mentioned existing technical solutions have the following defects: the air bag generates a vertical airflow, which is not conducive to the discharge of the screened material while improving the screening effect. At the same time, there is no device for crushing materials before screening, and the screening work of the screening device will be affected when the gravel with excessive particles enters.

Utility model content

The purpose of the utility model is to provide a material crushing and screening device for road and bridge construction, which can improve the screening effect of the screening device.

The above-mentioned utility model purpose of the utility model is achieved by the following technical solutions:

A material crushing and screening device for road and bridge construction, including a casing and a base, the casing is fixedly installed on the base, and also includes a crushing mechanism and a screening mechanism; the casing is set as a hollow cylinder; the crushing mechanism includes a hopper and two Roller, the roller is arranged horizontally in the casing and rotates along its axis under the drive of the motor, and the two rollers are arranged symmetrically on both sides of the axis of the casing; the direction of rotation of the two rollers is that both sides turn to the middle direction The screening mechanism includes a sieve plate, a baffle plate, a first discharge pipe and a second discharge pipe; a movable groove is opened on the inner wall of the casing; the sieve plate is a circular plate, and the sieve plate is horizontally set in the casing and its edge It is set in the movable groove; the baffle plate is horizontally set in the casing and located under the sieve plate; a vibration mechanism is installed at the lower end of the sieve plate, and the vibration mechanism drives the sieve plate to vibrate in the vertical direction, and the vibration mechanism is set in the movable groove; Both the feed pipe and the second discharge pipe are set on the side wall of the casing; the first discharge pipe is arranged on the top of the sieve plate, and the second discharge pipe is arranged between the sieve plate and the baffle plate.

By adopting the above-mentioned technical scheme, a roller is added to the upper half of the casing, and the roller rotates from both sides to the middle and relatively rotates during operation. The roller can squeeze and crush the materials falling from the hopper, and make the particles of the materials smaller before screening, which is convenient for screening. A vibrating mechanism is installed at the lower end of the sieve plate, which drives the sieve plate to vibrate in the vertical direction, and the materials on the sieve plate can be fully screened during the vibration process. The material with larger particles is discharged through the first discharge pipe, and the screened material will fall on the baffle plate, and finally be discharged through the second discharge port above the baffle plate. By adopting the above technical solution, the materials can be fully crushed, mixed and screened, and the screening effect of the screening device is improved.

The utility model is further set as follows: the vibrating mechanism is arranged at two places at the lower end of the sieve plate and is symmetrical about the axis of the sieve plate, the vibrating mechanism includes a vibrating block, a spring and a rotating shaft; the two ends of the spring are fixedly connected to the bottom of the sieve plate and the bottom of the movable groove; the vibrating block The fixed sleeve is set on the rotating shaft, and the cross section of the vibrating block is elliptical, which is perpendicular to the axis of the rotating shaft; two driving motors are fixedly installed in the casing, and the driving motor drives the rotating shaft to rotate along the axis; when the vibrating block rotates, it squeezes Press the sieve.

By adopting the above technical solution, the vibrating mechanism adopts the design of a vibrating block, which can rotate under the drive of the driving motor, squeeze the sieve plate when rotating, and drive the sieve plate to vibrate up and down to achieve the effect of vibrating screening. The design of the spring has the effect of reset, and the sieve plate will be pulled back to its original position by the spring after it moves upwards. There are two vibration mechanisms. The two vibrating mechanisms are independent of each other and can be opened at the same time to fully vibrate the sieve plate to mix and screen materials. Open the vibrating mechanism on one side and close the other, the vertical height of both sides will be inconsistent when vibrating, and the materials on the sieve plate will move to the side where the vibrating mechanism is closed when vibrating, which is convenient for the screening of materials discharge.

A further setting of the present invention is that one of the vibrating mechanisms is arranged directly below the first discharge pipe.

By adopting the above technical scheme, one vibration mechanism is set at the lower end of the first discharge pipe, the vibration mechanism is closed and the other is opened, and the material will move to the first discharge pipe under the vibration of the vibration mechanism, which is convenient for the sieve plate The material above is discharged.

The utility model is further set as that an auxiliary motor is fixedly installed on the bottom of the casing, and a rotating rod is vertically installed on the auxiliary motor; the rotating rod passes through the baffle plate and the sieve plate; the axis of the rotating rod coincides with the axis of the casing, and the auxiliary motor drives The rotating rod rotates along its axis; the rotating rod drives the baffle plate to rotate but does not act on the sieve plate.

By adopting the above-mentioned technical scheme, when the rotating rod rotates, it drives the baffle plate to rotate, and generates centrifugal force during the rotation, and the materials on the baffle plate will be moved to the edge position during the rotation process and rotate with the baffle plate. The second discharge pipe is arranged on the top of the baffle plate, and the material will be moved to the second discharge pipe after the baffle plate is rotated, so as to facilitate the discharge of the material.

The utility model is further provided that the top of the rotating rod is fixed with a cleaning frame; the cleaning frame is strip-shaped and rotates horizontally along the axis of the rotating rod under the drive of the rotating rod.

By adopting the above technical scheme, the cleaning frame connected to the top of the rotating rod is mainly used for cleaning the sieve plate, and the sieve plate may be blocked by irregular objects on the sieve holes. The lower end of the cleaning frame is attached to the sieve plate, and the rotating rod drives the cleaning frame to rotate to clean the sieve holes and ensure the normal operation of the screening device.

The utility model is further set as, the upper end of the casing is fixedly provided with a dustproof cover, and the top of the dustproof cover is provided with a top cover.

By adopting the above technical solution, the dust cover is used to prevent material from splashing and being polluted by dust during screening.

The utility model is further provided that drain holes are provided at the bottom of the casing.

By adopting the above technical solution, the drainage hole is designed to discharge the water flow, so as to avoid the interference of the auxiliary motor caused by the accumulation of the water flow.

The utility model is further provided that bellows are arranged on the side wall of the casing, the bellows are connected to the water pump, and gauze is fixedly installed at the connection between the bellows and the inside of the casing and is located above the hopper.

By adopting the above technical scheme, the outside can be connected to the water pump by using the bellows, and clean water can be drawn to clean the screening device. The screen can prevent the material from entering the bellows during work.

In summary, the beneficial technical effects of the utility model are:

1. Increase the design of crushing mechanism and screening mechanism, use the crushing mechanism to crush when screening materials, reduce the particle size, facilitate the normal screening work, and improve the screening effect. The vibrating mechanism vibrates in the vertical direction, which is convenient for the sieve plate to fully screen the material;

2. The vibrating mechanism is arranged symmetrically. After screening, by controlling the opening or closing of the vibrating mechanisms on both sides, the material can move on the sieve plate, which is convenient for the material to be discharged through the discharge port after screening;

3. Increase the design of the auxiliary motor and the rotating rod. The auxiliary motor drives the rotating rod to rotate, and the rotating rod drives the baffle to rotate, which is convenient for discharging the materials on the baffle. The upper end of the rotating rod is connected with the cleaning frame, and the cleaning frame can clean the sieve holes on the sieve plate to avoid blockage of the sieve holes.

Description of drawings

Fig. 1 is a schematic cross-sectional view of the main structure of the utility model.

Fig. 2 is a front sectional view of the vibration mechanism of the present invention.

Fig. 3 is a side sectional view of the vibration mechanism in the utility model.

Fig. 4 is a schematic diagram of the structure of the sieve plate of the present invention.

Reference signs: 1, base; 2, casing; 201, movable slot; 3, dust cover; 4, hopper; 5, sieve plate; 6, baffle plate; 7, first discharge pipe; 8, second Discharge pipe; 9. vibration mechanism; 901. vibration block; 902. spring; 903. rotating shaft; 904. drive motor; 10. roller; 11. auxiliary motor; Tube; 15, gauze.

Detailed ways

Below in conjunction with accompanying drawing, the utility model is described in further detail.

Referring to Fig. 1, it is a material crushing and screening device for road and bridge construction disclosed by the utility model, comprising a base 1, a casing 2 fixedly installed on the base 1 and a dust cover 3 installed on the top of the casing 2, and Including crushing mechanism and screening mechanism.

The casing 2 is set as a hollow cylinder, and the crushing mechanism is arranged in the upper half of the casing 2. The crushing mechanism includes a hopper 4 and a roller 10. There are two rollers 10 installed horizontally in the casing 2. The cylinder 10 rotates along its axis under the drive of the motor, and the rotation direction of the roller 10 is opposite and both sides rotate to the middle. The hopper 4 is arranged above the roller 10 , and all the materials discharged from the outlet of the hopper 4 fall on the roller 10 . The teeth of the roller 10 are fixed on the roller 10 for crushing the material.

The screening mechanism includes a sieve plate 5, a baffle plate 6, a first discharge pipe 7 and a second discharge pipe 8;

Referring to FIG. 2 and FIG. 3 , a movable groove 201 is provided on the inner wall of the casing 2 , and the movable groove 201 is an annular groove surrounding the inner wall of the casing 2 . The sieve plate 5 is arranged horizontally in the casing 2 and its edge circumference is set in the movable groove 201 . A vibrating mechanism 9 is provided at the lower end of the sieve plate 5 , and the vibrating mechanism 9 includes a spring 902 , a vibrating block 901 and a rotating shaft 903 . The upper and lower ends of the spring 902 are respectively fixedly connected to the lower end of the sieve plate 5 and the bottom of the movable groove 201 . A driving motor 904 is arranged in the movable groove 201, and the rotating shaft 903 is arranged horizontally in the movable groove 201 and is parallel to the roller 10 (shown in FIG. 1 ). The rotating shaft 903 is driven by the driving motor 904 to rotate along the axis. It is arranged on the rotating shaft 903 and the center line of the vibrating block 901 coincides with the axis of the rotating shaft 903 . The section of the vibrating block 901 is an ellipse (the section is perpendicular to the axis of the rotating shaft 903 ), and when the vibrating block 901 rotates, it will squeeze the sieve plate 5 to drive the sieve plate 5 to move in the vertical direction. When the vibrating block 901 squeezes the sieve plate 5 , the spring 902 is in a stretched state, and has a downward pulling force on the sieve plate 5 . The vibrating mechanism 9 and the driving motor 904 are arranged in two places in the movable groove 201 and arranged symmetrically with respect to the axis of the sieve plate 5. The first discharge pipe 7 is fixedly installed on the upper end of the sieve plate 5 and is located directly above the vibrating mechanism 9. The first discharge pipe 7 7. The part in the casing 2 is set to a cuboid cylindrical shape.

As shown in FIG. 1 , the baffle plate 6 is horizontally installed under the sieve plate 5 , and the second discharge pipe 8 is arranged between the sieve plate 5 and the baffle plate 6 for discharging the materials on the baffle plate 6 . An auxiliary motor 11 is arranged at the bottom of the casing 2 , the auxiliary motor 11 is located below the baffle plate 6 , the auxiliary motor 11 is connected with the rotating rod 12 , and the auxiliary motor 11 drives the rotating rod 12 to rotate along the axis of the rotating rod 12 . The rotating rod 12 passes through the baffle plate 6 and drives the baffle plate 6 to rotate, and the axes of the baffle plate 6 and the rotating rod 12 coincide. The upper end of the rotating rod 12 passes through the sieve plate 5 and does not attach to the sieve plate 5 . A cleaning frame 13 is fixedly connected to the upper end of the rotating rod 12, and the cleaning frame 13 is elongated. The cleaning frame 13 rotates along the axis of the rotating rod 12 under the drive of the rotating rod 12, and the cleaning frame 13 plays the role of cleaning the sieve plate 5 when rotating.

A water outlet hole is provided at the bottom of the casing 2 to prevent the accumulation of water from affecting the operation of the auxiliary motor 11 . A bellows 14 is arranged on the side wall of the casing 2, and the bellows 14 is connected to the water pump. A gauze 15 is fixedly installed at the connection between the bellows 14 and the interior of the casing 2 and is located above the hopper 4. The bellows 14 is externally connected to a water pump, and the water pump is used to pour clean water into the bellows 14 to clean the casing 2 .

The above motor structures are all connected to external power sources through wires, and their rotation is controlled by switches, so that the work of the motors does not affect each other.

The implementation principle of this embodiment is: when in use, the material is poured into the top of the casing 2, enters the hopper 4, and then falls onto the roller 10, and the roller 10 starts to rotate under the drive of the motor, and the material is as far as possible. broken. After that, the material falls on the sieve plate 5, and the two vibrating mechanisms 9 at the lower end of the sieve plate 5 are opened, and the materials are mixed and screened during the vibration. The materials with small particles fall on the baffle plate 6, and the large particles are left on the sieve plate. 5 on. After screening, close the vibrating device under the first discharge pipe 7, and continue to work at the other place. When the vibrating block 901 drives the sieve plate 5 to move up and down, a height difference occurs on both sides of the sieve plate 5, and the material is shaken while vibrating. Tilting to the side of the first discharge port, finally the material above the sieve plate 5 can be discharged through the first discharge port.

Open the auxiliary motor 11 to drive the rotating rod 12 to rotate, and when the rotating rod 12 rotates, it drives the baffle plate 6 to rotate, and the direction of rotation is the direction of the rotating rod 12 axis. The second discharge port is arranged above the baffle plate 6. When the baffle plate 6 rotates, the material on the baffle plate 6 will be pushed to the edge due to the centrifugal force and rotate together with the baffle plate 6. Finally, the material on the baffle plate 6 will It will be moved to the second discharge pipe 8 and discharged through the second discharge pipe 8.

A cleaning frame 13 is fixedly installed on the upper end of the rotating rod 12 , and the cleaning frame 13 rotates under the drive of the rotating rod 12 . When the cleaning rack 13 rotates, the screen cloth will be cleaned to prevent irregular particles from clogging the screen holes on the sieve plate 5 .

The embodiments of this specific embodiment are all preferred embodiments of the present utility model, and are not intended to limit the protection scope of the present utility model accordingly: all equivalent changes made according to the structure, shape and principle of the present utility model are all applicable. Should be covered within the protection scope of the present utility model.

Claims (8)

1. A material crushing and screening device for road and bridge construction, including a casing (2) and a base (1), the casing (2) is fixedly installed on the base (1), and is characterized in that: it includes a crushing mechanism and a screening mechanism; The crushing mechanism includes a hopper (4) and two rollers (10). The rollers (10) are arranged horizontally in the casing (2) and rotate along their axes driven by the motor. The two rollers (10) Both sides of the axis of the shell (2) are arranged symmetrically; the direction of rotation of the two rollers (10) is that both sides rotate toward the middle direction; The screening mechanism includes a sieve plate (5), a baffle plate (6), a first discharge pipe (7) and a second discharge pipe (8); a movable groove (201) is opened on the inner wall of the casing (2); The plate (5) is a circular plate, the sieve plate (5) is horizontally arranged in the casing (2) and its edge is arranged in the movable groove (201); the baffle plate (6) is horizontally arranged in the casing (2) and Located under the sieve plate (5); the lower end of the sieve plate (5) is equipped with a vibration mechanism (9), which drives the sieve plate (5) to vibrate in the vertical direction, and the vibration mechanism (9) is set in the movable groove (201 ); the first discharge pipe (7) and the second discharge pipe (8) are set on the side wall of the casing (2); the first discharge pipe (7) is installed on the upper end of the sieve plate (5), and the second The second discharge pipe (8) is arranged between the sieve plate (5) and the baffle plate (6). 2. A material crushing and screening device for road and bridge construction according to claim 1, characterized in that: the vibrating mechanism (9) is provided at two places at the lower end of the sieve plate (5) and is symmetrical about the axis of the sieve plate (5), The vibration mechanism (9) includes a vibration block (901), a spring (902) and a rotating shaft (903); the two ends of the spring (902) are respectively fixedly connected to the bottom of the sieve plate (5) and the bottom of the movable groove (201); the vibration block (901 ) is fixedly sleeved on the rotating shaft (903), and the section of the vibrating block (901) is elliptical, which is a section perpendicular to the axis of the rotating shaft (903); two driving motors (904) are fixedly installed inside the casing (2) ), the driving motor (904) drives the rotating shaft (903) to rotate along the axis; the vibrating block (901) squeezes the sieve plate (5) when rotating. 3. A material crushing and screening device for road and bridge construction according to claim 2, characterized in that: one of the vibrating mechanisms (9) is arranged directly below the first discharge pipe (7). 4. A material crushing and screening device for road and bridge construction according to claim 1, characterized in that: an auxiliary motor (11) is fixedly installed at the bottom of the casing (2), and an auxiliary motor (11) is vertically installed on the auxiliary motor (11). Rotating rod (12); the rotating rod (12) passes through the baffle plate (6) and the sieve plate (5); the axis of the rotating rod (12) coincides with the axis of the casing (2), and the auxiliary motor (11) drives the rotating rod ( 12) Rotate along its axis; the rotating rod (12) drives the baffle plate (6) to rotate but does not act on the sieve plate (5). 5. A material crushing and screening device for road and bridge construction according to claim 4, characterized in that: a cleaning rack (13) is fixedly installed on the top of the rotating rod (12); the cleaning rack (13) is long and Driven by the rotating rod (12), it rotates horizontally along the axis of the rotating rod (12). 6. A material crushing and screening device for road and bridge construction according to claim 1, characterized in that: the upper end of the casing (2) is fixed with a dust cover (3), and the top of the dust cover (3) is provided with a top cover. 7. A material crushing and screening device for road and bridge construction according to claim 1, characterized in that: a drain hole is opened at the bottom of the casing (2). 8. A material crushing and screening device for road and bridge construction according to claim 1, characterized in that: a bellows (14) is provided on the side wall of the casing (2), and the bellows (14) is connected to the water pump, and the bellows (14) is connected to the water pump. A gauze (15) is fixedly installed at the connection between the pipe (14) and the inside of the casing (2) and is located above the hopper (4).