Gravel screening device for constructional engineering

Abstract

The utility model relates to the technical field of constructional engineering, in particular to a gravel screening device for constructional engineering, which comprises a supporting component, a screening component and a feeding component, and a bottom plate in the supporting component serves as a basic bearing part of the whole device and provides a stable mounting foundation for the screening component, the feeding component and other components. The moving assemblies (composed of universal wheels and brakes) arranged at the four corners below the bottom plate endow the equipment with good maneuverability; the rotating shaft at the output end of the motor penetrates through the supporting frame and is connected with the center of the connecting frame on one side of the screening frame, and after being started, the motor can drive the rotating shaft to rotate so as to drive the screening frame to rotate. In the rotating process of the screening frame, a gravel mixture continuously rolls and jumps in the screening frame, gravel particles can make more sufficient contact with screening holes, the screening speed is increased, the screening efficiency is improved, qualified materials are screened from the screening holes, unqualified materials are discharged from hollow holes, and operation is convenient.

Description

Technical Field

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

[0002] Sand and gravel screening is an important basic work in many fields such as construction engineering and road construction. Its purpose is to classify the sand and gravel mixture mined or transported according to the particle size to meet the specific requirements of different projects for sand and gravel particle size;

[0003] The traditional sand and gravel screening device is not convenient to adjust its position, and material accumulation is likely to occur at its discharge port, affecting the stable operation of the equipment. It is also inconvenient to discharge unqualified materials, making it inconvenient to use. Utility Model Content

[0004] 1. Technical issues to be resolved

[0005] In view of the deficiencies in the prior art, the utility model provides a sand and gravel screening device for construction engineering.

[0006] (II) Technical solution

[0007] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a sand and gravel screening device for construction engineering, comprising a supporting assembly, a screening assembly and a feeding assembly, the supporting assembly comprising a bottom plate, a moving assembly, a side plate and a top plate, the moving assembly is arranged at the four corners below the bottom plate, the side plates are symmetrically arranged on the left and right sides above the bottom plate, the top plate is arranged above the two groups of side plates, the screening assembly comprises a U-shaped frame, a supporting ring, a screening frame, a connecting frame, a supporting frame, a motor and a rotating shaft, and the screening frame is provided with a screening A hole is provided under the top plate, a U-shaped frame is provided on the inner wall of the U-shaped frame, a support ring is provided on the outer side of the screening frame, the support ring is slidably connected with the slide groove, a support frame is provided under the top plate, an opening is provided on one side of the screening frame, the connecting frame is provided on the other side of the screening frame, a hollow hole is provided on the connecting frame, a rotating shaft passing through the supporting frame is provided at the output end of the motor, the rotating shaft is connected to the center of the connecting frame, and a feeding assembly is provided on the end of the top plate close to the opening.

[0008] In order to facilitate and stably carry the screening frame, the utility model is improved in that the U-shaped frame and the support ring are arranged in a plurality of groups, and the support ring and the U-shaped frame are arranged on the periphery of the hollow hole.

[0009] Preferably, the screening frame is arranged obliquely, and the opening is at the higher end.

[0010] In order to facilitate the movement and fixation of the equipment, the utility model is improved in that the moving component includes universal wheels and brakes, the universal wheels are arranged at the four corners below the bottom plate, and the brakes are arranged on the circumference of the universal wheels.

[0011] In order to facilitate and stabilize feeding, the utility model is improved in that the feeding assembly includes a feeding box, an inverted cone and a feeding pipe, the feeding box is embedded in the top plate, an inverted cone is arranged below the feeding box, the feeding pipe is in an inclined L-shape, the top of the feeding pipe is connected to the inverted cone, the bottom of the feeding pipe extends into the screening frame, and a feeding channel is arranged in the center of the feeding box, the inverted cone and the feeding pipe.

[0012] In order to facilitate the separation of qualified materials and unqualified materials, the utility model is improved in that slopes are further provided on the front and rear sides of the bottom plate, the slopes are higher near each other, and a partition is further provided between the two groups of slopes.

[0013] (III) Beneficial effects

[0014] Compared with the prior art, the utility model provides a sand and gravel screening device for construction engineering, which has the following beneficial effects:

[0015] The sand and gravel screening device for construction projects uses the bottom plate in the support assembly as the basic bearing part of the entire device, providing a stable installation foundation for the screening assembly, feeding assembly and other components. The mobile components (composed of universal wheels and brakes) set at the four corners below the bottom plate give the equipment good mobility;

[0016] The rotating shaft at the output end of the motor passes through the support frame and is connected to the center of the connecting frame on one side of the screening frame. After the motor is started, the motor can drive the rotating shaft to rotate, thereby driving the screening frame to rotate. During the rotation of the screening frame, the sand and gravel mixture continuously rolls and jumps inside it, allowing the sand and gravel particles to more fully contact the screening holes, speeding up the screening speed and improving the screening efficiency. Compared with the traditional static screening method, it can more effectively separate the sand and gravel according to the particle size;

[0017] Qualified materials are screened from the sieve holes, and unqualified materials are discharged from the hollow holes, which is easy to operate. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 This is a schematic diagram of the main structure of the utility model;

[0019] Figure 2 This is a bottom view schematic diagram of the structure of the utility model;

[0020] Figure 3 It is a partial schematic diagram of the structure of the utility model;

[0021] Figure 4The utility model structure Figure 3 A partial enlarged schematic diagram is shown in the figure.

[0022] In the figure: 1. bottom plate; 2. side plate; 3. top plate; 4. U-shaped frame; 5. support ring; 6. screening frame; 7. connecting frame; 8. support frame; 9. motor; 10. rotating shaft; 11. hollow hole; 12. screening hole; 13. universal wheel; 14. brake; 15. feeding box; 16. inverted cone; 17. feeding pipe; 18. partition. DETAILED DESCRIPTION

[0023] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0024] See also Figure 1-4 A sand and gravel screening device for construction engineering, comprising a supporting assembly, a screening assembly and a feeding assembly, wherein the supporting assembly comprises a bottom plate 1, a moving assembly, a side plate 2 and a top plate 3, wherein the moving assembly is arranged at the four corners below the bottom plate 1, and the side plates 2 are symmetrically arranged on the left and right sides above the bottom plate 1, and the top plate 3 is arranged above the two groups of the side plates 2, wherein the screening assembly comprises a U-shaped frame 4, a supporting ring 5, a screening frame 6, a connecting frame 7, a supporting frame 8, a motor 9 and a rotating shaft 10, wherein the screening frame 6 is provided with a screening hole 12, and the top plate 3 is also provided below the top plate 3 There is a U-shaped frame 4, the inner wall of the U-shaped frame 4 is provided with a slide groove, a support ring 5 is provided on the outer side of the screening frame 6, the support ring 5 is slidably connected to the slide groove, a support frame 8 is also provided under the top plate 3, an opening is provided on one side of the screening frame 6, and the connecting frame 7 is provided on the other side of the screening frame 6. A hollow hole 11 is provided on the connecting frame 7, and a rotating shaft 10 passing through the support frame 8 is provided at the output end of the motor 9, and the rotating shaft 10 is connected to the center of the connecting frame 7, and a feeding assembly is also provided on the top plate 3 near the end of the opening.

[0025] The bottom plate 1 of the support assembly serves as the basic bearing platform of the entire screening device, and carries the side plates 2, the top plate 3, and many other components such as the screening assembly and the feeding assembly installed below the top plate 3. The side plates 2 are symmetrically arranged on the left and right sides above the bottom plate 1, and together with the top plate 3 form a frame structure, providing a stable support frame for the entire device;

[0026] The moving components (including universal wheels 13 and brakes 14) arranged at the four corners below the base plate 1 play a key role in movement and positioning. The universal wheels 13 make the equipment mobile. In construction projects or road construction sites, operators can easily push the equipment to move between different locations according to actual needs. For example, move from the sand and gravel raw material storage area to a specific construction area for screening operations, or transfer the equipment to a suitable location at different construction stages. The brake 14 is installed on the side of the universal wheel 13. When the equipment moves to the specified position, the universal wheel 13 can be stopped by operating the brake 14, and the equipment can be fixed in this position to avoid displacement of the equipment due to unexpected external forces (such as wind, collision, etc.) during the subsequent sand and gravel screening process. This ensures that the equipment can stably carry out screening work and provide stable basic conditions for the entire screening process;

[0027] The screening frame 6 is provided with screening holes 12, which are designed according to the specific requirements of different projects for the sand and gravel particle size. When the sand and gravel mixture enters the screening frame 6, under a certain motion state, the sand and gravel particles with a particle size smaller than the aperture of the screening hole 12 can fall through the screening hole 12, thereby achieving separation from the unqualified sand and gravel with a larger particle size;

[0028] The screening frame 6 is arranged obliquely and the opening is at a higher end. Under the action of gravity, the sand and gravel naturally slide down along the inclined surface of the screening frame 6, effectively preventing qualified sand and gravel from accumulating in the screening frame 6, ensuring the smoothness of the material discharge process, and facilitating the subsequent collection and transportation of qualified sand and gravel. The support ring 5 on the outside of the screening frame 6 is slidably connected to the inner wall slide groove of the U-shaped frame under the top plate 3, and multiple groups of U-shaped frames and support rings 5 ​​are provided and located on the side of the hollow hole 11. Through multi-point contact and sliding cooperation, a stable support is provided for the screening frame 6, ensuring that the screening frame 6 can maintain a good balance and position stability when it is stationary and subsequently driven by the motor 9 to rotate, avoiding shaking, offset and other situations that affect the screening effect;

[0029] The motor 9 serves as a power source, and the rotating shaft 10 at its output end passes through the support frame 8 and is connected to the center of the connecting frame 7 on one side of the screening frame 6. When the motor 9 is started, the motor 9 drives the rotating shaft 10 to rotate, and the rotating shaft 10 then drives the screening frame 6 connected thereto to rotate. During the rotation of the screening frame 6, the internal sand and gravel mixture will continuously roll and jump in the screening frame 6 under the action of various forces such as centrifugal force and its own gravity, so that there are more contact opportunities between the sand and gravel particles and the screening holes 12. Compared with the traditional static screening method, this dynamic rotary screening can allow the sand and gravel particles to try to pass through the screening holes 12 more fully, thereby speeding up the screening speed, improving the screening efficiency, and more effectively separating the sand and gravel according to the particle size, ensuring that the sand and gravel that meet the engineering requirements can pass through the screening holes 12, while the unqualified sand and gravel with larger particle sizes remain in the screening frame 6, waiting to be discharged through the hollow holes 11 later;

[0030] The feeding assembly includes a feeding box 15, an inverted cone 16 and a feeding pipe 17. The feeding box 15 is embedded in the top plate 3. An inverted cone 16 is arranged below the feeding box 15. The feeding pipe 17 is in an inclined L-shape. The top of the feeding pipe 17 is connected to the inverted cone 16. The bottom of the feeding pipe 17 extends into the screening frame 6. A feeding channel is arranged in the center of the feeding box 15, the inverted cone 16 and the feeding pipe 17. The feeding box 15 is embedded in the top plate 3. It provides a temporary storage space for the sand and gravel mixture, which is convenient for the centralized stacking of the materials to be screened. The inverted cone 16 structure arranged below the feeding box 15 is designed based on the principle of material gravity convergence. The shape of the inverted cone 16 makes the sand and gravel mixture naturally converge to the central outlet below under the action of its own gravity, which is convenient for the subsequent smooth entry into the feeding pipe 17.

[0031] The feeding pipe 17 is in an inclined L-shape, connected to the inverted cone 16 at the top and extending into the screening frame 6 at the bottom, and a feeding channel is provided in the center of the feeding box 15, the inverted cone 16 and the feeding pipe 17. Such a design ensures that the material has a clear and smooth flow path. After the sand and gravel mixture enters the feeding pipe 17 from the inverted cone 16, it can slide naturally along the inside of the pipe and evenly enter the screening frame 6 by virtue of the inclination angle of the feeding pipe 17 and the action of gravity, thus avoiding the blockage and uneven dispersion of the material during the feeding process, ensuring that the sand and gravel mixture entering the screening frame 6 is relatively uniform in quantity and distribution, laying the foundation for subsequent stable and efficient screening work, and ensuring the consistency and reliability of the screening effect.

[0032] In this embodiment, slopes are further provided on the front and rear sides of the bottom plate 1, and the slopes are higher near each other. A partition 18 is further provided between the two groups of slopes to stably separate qualified materials from unqualified materials.

[0033] Reference to "embodiment" herein means that the specific features, structures or characteristics described in conjunction with the embodiment may be included in at least one embodiment of the present application. The term "embodiment" appearing in various places in the specification does not necessarily refer to the same embodiment, nor does it particularly limit its independence or association with other embodiments. In principle, in the present application, as long as there is no technical contradiction or conflict, the various technical features mentioned in the embodiments can be combined in any way to form a corresponding implementable technical solution.

[0034] Unless otherwise defined, the technical terms used in this document have the same meanings as those generally understood by those skilled in the art to which this application belongs; the use of relevant terms in this document is only for describing specific embodiments and is not intended to limit this application.

[0035] Although the embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that many changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention.

Claims

1. A sand and gravel screening device for construction engineering, comprising a support assembly, a screening assembly and a feeding assembly, characterized in that: The support assembly comprises a bottom plate (1), a moving assembly, a side plate (2) and a top plate (3); the moving assembly is arranged at the four corners below the bottom plate (1); the side plates (2) are symmetrically arranged on the left and right sides above the bottom plate (1); the top plate (3) is arranged above two groups of the side plates (2); the screening assembly comprises a U-shaped frame (4), a support ring (5), a screening frame (6), a connecting frame (7), a support frame (8), a motor (9) and a rotating shaft (10); the screening frame (6) is provided with a screening hole (12); a U-shaped frame (4) is further arranged below the top plate (3); the U-shaped frame (4) The inner wall is provided with a slide groove, the outer side of the screening frame (6) is provided with a support ring (5), the support ring (5) is slidably connected to the slide groove, a support frame (8) is further provided below the top plate (3), one side of the screening frame (6) is provided with an opening, the other side of the screening frame (6) is provided with the connecting frame (7), the connecting frame (7) is provided with a hollow hole (11), the output end of the motor (9) is provided with a rotating shaft (10) passing through the supporting frame (8), the rotating shaft (10) is connected to the center of the connecting frame (7), and a feeding assembly is further provided at one end of the top plate (3) close to the opening.

2. A sand and gravel screening device for construction engineering according to claim 1, characterized in that: The U-shaped frame (4) and the support ring (5) are arranged in a plurality of groups, and the support ring (5) and the U-shaped frame (4) are arranged on the periphery of the hollow hole (11).

3. A sand and gravel screening device for construction engineering according to claim 2, characterized in that: The screening frame (6) is arranged obliquely, with the opening being at the higher end.

4. A sand and gravel screening device for construction engineering according to claim 3, characterized in that: The moving assembly comprises universal wheels (13) and brakes (14); the universal wheels (13) are arranged at four corners below the base plate (1); and the brakes (14) are arranged on the circumference of the universal wheels (13).

5. The sand and gravel screening device for construction engineering according to claim 4, characterized in that: The feeding assembly comprises a feeding box (15), an inverted cone (16) and a feeding pipe (17); the feeding box (15) is embedded in the top plate (3); an inverted cone (16) is arranged below the feeding box (15); the feeding pipe (17) is in an inclined L-shape; the top of the feeding pipe (17) is connected to the inverted cone (16); the bottom of the feeding pipe (17) extends into the screening frame (6); and a feeding channel is arranged in the center of the feeding box (15), the inverted cone (16) and the feeding pipe (17).

6. The sand and gravel screening device for construction engineering according to claim 5, characterized in that: The bottom plate (1) is also provided with slopes on both the front and rear sides, the slopes being higher near each other, and a partition (18) is also provided between the two groups of slopes.

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