Gravel screening device for engineering construction
By designing gears and connecting convex strips, and combining them with L-shaped support plates and springs, the problem of uneven sand and gravel distribution in the sand and gravel screening device was solved, thereby improving screening efficiency and accuracy and reducing equipment maintenance costs.
Patent Information
- Application Number
- CN202422886190.3
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-11-26
- Publication Date
- 2025-11-11
- Estimated Expiration
- 2034-11-26
AI Technical Summary
Existing sand and gravel screening devices cannot evenly distribute sand and gravel on the screen surface, resulting in local overload of the screen holes, increasing screen wear and equipment maintenance costs.
The design employs gears and connecting convex strips, using circular motion to drive the swing rod to evenly distribute sand and gravel. The L-shaped support plate and spring work together to ensure smooth flow and buffering of the screening screen.
This achieves uniform distribution of sand and gravel on the screen, maximizes the use of screen openings, improves screening efficiency and accuracy, and reduces screen wear and equipment maintenance costs.
Smart Images
Figure CN223530824U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of building engineering technology, and more specifically, to a sand and gravel screening device for engineering construction. Background Technology
[0002] Construction engineering refers to the engineering entity formed by the construction of various types of buildings and their ancillary facilities, as well as the installation of supporting lines, pipelines, and equipment. Among them, building construction refers to projects with roofs, beams, columns, walls, foundations, and the ability to form internal spaces to meet people's needs for production, living, learning, and public activities. Existing sand and gravel screening devices cannot evenly distribute sand and gravel across the entire screen surface, thus making it impossible to fully utilize each screen hole and causing local overload, thereby increasing screen wear and equipment maintenance costs. Utility Model Content
[0003] In order to overcome the shortcomings of the existing technology, this utility model provides a sand and gravel screening device for engineering construction, which has the advantage of uniform and flat spreading.
[0004] To achieve the above objectives, this utility model provides the following technical solution: a sand and gravel screening device for engineering construction, comprising a screening box, a first bracket fixedly installed on the front of the screening box, a first motor fixedly installed on the inner side of the first bracket, a rectangular groove formed in the center of the front of the screening box, a second bracket fixedly installed on the inner side of the rectangular groove, and the extensions on both sides of the second bracket fixedly connected to the inner wall of the rectangular groove, a first connecting protrusion rotatably installed on the inner side of the center of the second bracket, and the output shaft of the first motor passing through the center of the second bracket and fixedly connected to the upper part of the first connecting protrusion, the lower half of the first connecting protrusion fixedly connected to the center of a gear, a ring rack fixedly installed on the outer surface of the inner side of the second bracket, and the gear meshing with the ring rack, a second connecting protrusion fixedly installed on the inner side of the gear and fixedly connected to the upper half of the second connecting protrusion, a connecting plate fixedly connected to the lower half of the second connecting protrusion, and a swing rod fixedly installed on the outer surface of the connecting plate and located inside the screening box.
[0005] As a preferred embodiment of this utility model, a first hollow sleeve block is fixedly installed on the outer right side of the screening box, extending into the interior of the screening box. A rack is slidably installed inside the first hollow sleeve block, extending into the interior of the screening box. A support plate is fixedly installed below the first hollow sleeve block on the outer right side of the screening box. A third bracket is fixedly installed on the top outer surface of the support plate. A second motor is fixedly installed on the inner side of the third bracket. A semi-toothed gear is fixedly installed on the outer surface of the output shaft of the second motor, meshing with the rack. A second hollow sleeve block is fixedly installed on the inner left side of the screening box. A spring is placed inside the second hollow sleeve block and fixedly connected to the inner wall of the screening box. A transmission rod is movably installed inside the second hollow sleeve block, and the spring is fixedly connected to the transmission rod. L-shaped support plates are fixedly installed on the inner sides of both the transmission rod and the rack. A screening screen is fixedly installed on the inner side of the L-shaped support plate and located between the two L-shaped support plates. A baffle is fixedly installed on the back of the screening screen.
[0006] As a preferred technical solution of this utility model, a convex groove is provided on the top inner side of the first hollow sleeve block, and a convex strip is fixedly installed on the outer surface of the top of the rack, and the convex strip matches the convex groove provided inside the first hollow sleeve block.
[0007] As a preferred embodiment of this utility model, a swing rod is fixedly installed on the outer surface of the connecting plate, and the swing rod is arranged in a linear array.
[0008] As a preferred embodiment of this utility model, a feeding trough is fixedly installed on the top of the screening box, and the feeding trough has an opening that is larger at the top and smaller at the bottom.
[0009] As a preferred embodiment of this utility model, a discharge protrusion is fixedly installed directly below the internal screening screen of the screening box, and the discharge protrusion is inclined.
[0010] As a preferred technical solution of this utility model, a base is fixedly installed at the bottom of the screening box and the base is presented around the bottom of the screening box, and the baffle is fixedly connected to the L-shaped support plates on both sides.
[0011] Compared with the prior art, the beneficial effects of this utility model are as follows:
[0012] 1. This utility model uses gears to make circular motion, which in turn drives the second connecting protrusion to make circular motion. When the second connecting protrusion makes circular motion, it drives the connecting plate to make circular motion. When the connecting plate makes circular motion, it drives the swing rod to make circular motion. Compared with traditional devices, this device can evenly distribute sand and gravel on the entire surface of the screen, so that every screen hole on the screen has the opportunity to participate in the screening process. This maximizes the utilization of the screening area of the screen, effectively increases the screening volume per unit time, avoids local overload, improves screening accuracy, reduces screen wear, and lowers equipment maintenance costs.
[0013] 2. When the power is transmitted from one L-shaped support plate to the other, the transmission rod will press against the spring. When the upper half of the toothed gear is not engaged, the spring's elasticity will restore the screen to its original position, causing the L-shaped support plates on both sides to move the screen back into place. Compared with traditional devices, this device can effectively break the adhesion state, keep the screen holes open, thereby improving the screening speed and efficiency. It can also buffer the impact of falling sand and gravel on the equipment to a certain extent. Attached Figure Description
[0014] Figure 1 This is a frontal three-dimensional appearance structural diagram of the present utility model;
[0015] Figure 2 This is a schematic diagram of the screening box structure of this utility model;
[0016] Figure 3 This is a schematic diagram of the material discharge protrusion structure of this utility model;
[0017] Figure 4 This is a schematic diagram of the L-shaped support plate structure of this utility model;
[0018] Figure 5 This is a schematic diagram of the screening mesh structure of this utility model;
[0019] Figure 6 This is a schematic diagram of the first support structure of this utility model.
[0020] In the diagram: 1. Screening box; 2. First support; 3. First motor; 4. Second support; 5. Ring rack; 6. First connecting ridge; 7. Gear; 8. Second connecting ridge; 9. Connecting plate; 10. Swing rod; 11. First hollow sleeve block; 12. Convex strip block; 13. Rack; 14. Semi-toothed gear; 15. Second motor; 16. Third support; 17. Support plate; 18. L-shaped support plate; 19. Screening mesh; 20. Transmission rod; 21. Spring; 22. Second hollow sleeve block; 23. Baffle; 24. Discharge ridge; 25. Feed chute; 26. Base. Detailed Implementation
[0021] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.
[0022] like Figures 1 to 6 As shown, this utility model provides a sand and gravel screening device for engineering construction, including a screening box 1. A first support 2 is fixedly installed on the front of the screening box 1. A first motor 3 is fixedly installed on the inner side of the first support 2. A rectangular groove is opened in the middle of the front of the screening box 1. A second support 4 is fixedly installed on the inner side of the rectangular groove, and the extensions on both sides of the second support 4 are fixedly connected to the inner wall of the rectangular groove. A first connecting protrusion 6 is rotatably installed on the inner side of the middle of the second support 4. The output shaft of the first motor 3 passes through the middle of the second support 4 and is fixedly connected to the upper part of the first connecting protrusion 6. The lower half of the first connecting protrusion 6 is fixedly connected to the middle of the gear 7. A ring rack 5 is fixedly installed on the outer surface of the inner side of the second support 4, and the gear 7 meshes with the ring rack 5. A second connecting protrusion 8 is fixedly installed on the inner side of the gear 7 and is fixedly connected to the upper half of the second connecting protrusion 8. A connecting plate 9 is fixedly connected to the lower half of the second connecting protrusion 8. A swing rod 10 is fixedly installed on the outer surface of the connecting plate 9 and is located inside the screening box 1.
[0023] When the worker starts the first motor 3, the output shaft will drive the first connecting protrusion 6 to start rotating. When the first connecting protrusion 6 starts rotating, it will drive the first connecting protrusion 6 to make a circular motion. When the first connecting protrusion 6 makes a circular motion, it will drive the gear 7 to make a circular motion along the circular trajectory that meshes with the ring rack 5. When the gear 7 makes a circular motion, it will drive the second connecting protrusion 8 to make a circular motion. When the second connecting protrusion 8 makes a circular motion, it will drive the connecting plate 9 to make a circular motion. When the connecting plate 9 makes a circular motion, it will drive the swing rod 10 to make a circular motion, thereby spreading the sand and gravel evenly.
[0024] When gear 7 makes a circular motion, it will drive the second connecting convex strip 8 to make a circular motion. When the second connecting convex strip 8 makes a circular motion, it will drive the connecting plate 9 to make a circular motion. When the connecting plate 9 makes a circular motion, it will drive the swing rod 10 to make a circular motion. Compared with traditional devices, this device can evenly distribute sand and gravel on the entire surface of the screen, so that every screen hole on the screen has the opportunity to participate in the screening process, thereby maximizing the use of the screening area of the screen, effectively increasing the screening volume per unit time, avoiding this local overload phenomenon, improving screening accuracy, reducing screen wear, and reducing equipment maintenance costs.
[0025] A first hollow sleeve block 11 is fixedly installed on the outer right side of the screening box 1, extending into the interior of the screening box 1. A rack 13 is slidably installed inside the first hollow sleeve block 11, extending into the interior of the screening box 1. A support plate 17 is fixedly installed below the first hollow sleeve block 11 on the outer right side of the screening box 1. A third bracket 16 is fixedly installed on the top outer surface of the support plate 17. A second motor 15 is fixedly installed on the inner side of the third bracket 16. A semi-toothed gear 14 is fixedly installed on the outer surface of the output shaft of the second motor 15. A second hollow sleeve block 22 is fixedly installed on the left inner wall of the screening box 1, meshing with the rack 13. A spring 21 is placed inside the second hollow sleeve block 22 and is fixedly connected to the inner wall of the screening box 1. A transmission rod 20 is movably installed inside the second hollow sleeve block 22 and is fixedly connected to the spring 21. An L-shaped support plate 18 is fixedly installed on the inner side of both the transmission rod 20 and the rack 13. A screening screen 19 is fixedly installed on the inner side of the L-shaped support plate 18 and is located between the two L-shaped support plates 18. A baffle 23 is fixedly installed on the back of the screening screen 19.
[0026] By starting the second motor 15, the output shaft of the second motor 15 will drive the half toothed gear 14 to start rotating. When the half toothed gear 14 rotates, the upper half toothed gear meshes with the rack 13, which will drive the rack 13 to push the L-shaped support plate 18. When the L-shaped support plate 18 transmits the power to the other L-shaped support plate 18, it will squeeze the spring 21 through the transmission rod 20. When the upper half toothed gear 14 does not mesh with it, due to the elasticity of the spring 21, the L-shaped support plates 18 on both sides will drive the screening screen 19 to return to its position, thereby reciprocating to achieve left and right movement for screening sand and gravel.
[0027] When the power is transmitted to the other L-shaped support plate 18 via the L-shaped support plate 18, it will be squeezed by the transmission rod 20 and pressed against the spring 21. When the upper half toothed gear 14 is not engaged with it, the elastic force of the spring 21 will cause the L-shaped support plates 18 on both sides to drive the screening screen 19 to return to its position. Compared with the traditional device, this device can effectively break this sticking state, keep the screen holes open, thereby improving the screening speed and efficiency, and can also buffer the impact of sand and gravel falling on the equipment to a certain extent.
[0028] The first hollow sleeve block 11 has a convex groove on its inner top, and a convex strip 12 is fixedly installed on the outer surface of the top of the rack 13, and the convex strip 12 matches the convex groove inside the first hollow sleeve block 11.
[0029] By matching the convex groove inside the first hollow sleeve block 11 with the convex strip 12, the rack 13 can be effectively ensured to slide smoothly inside the first hollow sleeve block 11, avoiding jamming.
[0030] Among them, the outer surface of the connecting plate 9 is fixedly installed with a swing rod 10, and the swing rod 10 is arranged in a linear array.
[0031] By arranging the swing rods 10 in a linear array, the dead zones that prevent the sand and gravel from being laid flat during the circular motion of the swing rods 10 can be reduced.
[0032] The top of the screening box 1 is fixedly equipped with a feeding trough 25, and the feeding trough 25 has an opening that is larger at the top and smaller at the bottom.
[0033] The feeding chute 25 has an opening that is wider at the top and narrower at the bottom, which makes it easier for workers to transport sand and gravel into the screening box 1, thereby improving work efficiency.
[0034] The discharge protrusion 24 is fixedly installed directly below the internal screening screen 19 of the screening box 1, and the discharge protrusion 24 is inclined.
[0035] By tilting the discharge protrusion 24 inside the screening box 1, the screened sand and gravel can be quickly transported to the outside through the inclined slope of the discharge protrusion 24, avoiding blockage inside the screening box 1.
[0036] The bottom of the screening box 1 is fixedly installed with a base 26, which is located around the bottom of the screening box 1. The baffle 23 is fixedly connected to the L-shaped support plates 18 on both sides.
[0037] The base 26, located around the bottom of the screening box 1, effectively provides support for the entire device. The feed chute 25 effectively reduces the amount of sand and gravel that falls to the outside without being screened, and effectively limits the movement of sand and gravel.
[0038] Working principle and usage process of this utility model:
[0039] When the worker starts the first motor 3, the output shaft will drive the first connecting protrusion 6 to start rotating. When the first connecting protrusion 6 starts rotating, it will drive the first connecting protrusion 6 to make a circular motion. When the first connecting protrusion 6 makes a circular motion, it will drive the gear 7 to make a circular motion along the circular trajectory that meshes with the ring rack 5. When the gear 7 makes a circular motion, it will drive the second connecting protrusion 8 to make a circular motion. When the second connecting protrusion 8 makes a circular motion, it will drive the connecting plate 9 to make a circular motion. When the connecting plate 9 makes a circular motion, it will drive the swing rod 10 to make a circular motion, thereby spreading the sand and gravel evenly.
[0040] By starting the second motor 15, the output shaft of the second motor 15 will drive the half toothed gear 14 to start rotating. When the half toothed gear 14 rotates, the upper half toothed gear meshes with the rack 13, which will drive the rack 13 to push the L-shaped support plate 18. When the L-shaped support plate 18 transmits the power to the other L-shaped support plate 18, it will squeeze the spring 21 through the transmission rod 20. When the upper half toothed gear 14 does not mesh with it, due to the elasticity of the spring 21, the L-shaped support plates 18 on both sides will drive the screening screen 19 to return to its position, thereby reciprocating to achieve left and right movement for screening sand and gravel.
[0041] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.
[0042] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.
Claims
1. A sand and gravel screening device for engineering construction, comprising a screening box (1), characterized in that: The screening box (1) is fixedly mounted with a first bracket (2) on its front side. A first motor (3) is fixedly mounted on the inner side of the first bracket (2). A rectangular groove is provided in the middle of the front side of the screening box (1). A second bracket (4) is fixedly mounted on the inner side of the rectangular groove, and the extensions on both sides of the second bracket (4) are fixedly connected to the inner wall of the rectangular groove. A first connecting protrusion (6) is rotatably mounted on the inner side of the middle part of the second bracket (4), and the output shaft of the first motor (3) passes through the middle part of the second bracket (4) and is fixedly connected to the upper part of the first connecting protrusion (6). The lower half of the first connecting ridge (6) is fixedly connected to the middle part of the gear (7). The inner outer surface of the second bracket (4) is fixedly installed with an annular rack (5) and the gear (7) meshes with the annular rack (5). The inner side of the gear (7) is fixedly installed with a second connecting ridge (8) and is fixedly connected to the upper half of the second connecting ridge (8). The lower half of the second connecting ridge (8) is fixedly connected with a connecting plate (9). The outer surface of the connecting plate (9) is fixedly installed with a swing rod (10) and is located inside the screening box (1).
2. The sand and gravel screening device for engineering construction according to claim 1, characterized in that: A first hollow sleeve block (11) is fixedly installed on the outer right side of the screening box (1), and the first hollow sleeve block (11) extends into the interior of the screening box (1). A rack (13) is slidably installed inside the first hollow sleeve block (11), and the rack (13) extends into the interior of the screening box (1). A support plate (17) is fixedly installed below the first hollow sleeve block (11) on the outer right side of the screening box (1). A third bracket (16) is fixedly installed on the top outer surface of the support plate (17). A second motor (15) is fixedly installed on the inner side of the third bracket (16). A semi-tooth gear (14) is fixedly installed on the outer surface of the output shaft of the second motor (15), and the semi-tooth gear (14) and the... The racks (13) mesh with each other. A second hollow sleeve block (22) is fixedly installed on the inner wall of the left side of the screening box (1). A spring (21) is placed inside the second hollow sleeve block (22) and the spring (21) is fixedly connected to the inner wall of the screening box (1). A transmission rod (20) is movably installed inside the second hollow sleeve block (22) and the spring (21) is fixedly connected to the transmission rod (20). An L-shaped support plate (18) is fixedly installed on the inner side of the transmission rod (20) and the rack (13). A screening screen (19) is fixedly installed on the inner side of the L-shaped support plate (18) and is located between the two L-shaped support plates (18). A baffle (23) is fixedly installed on the back of the screening screen (19).
3. The sand and gravel screening device for engineering construction according to claim 2, characterized in that: The first hollow sleeve block (11) has a convex groove on its inner top, and the rack (13) has a convex strip (12) fixedly installed on its top outer surface, and the convex strip (12) matches the convex groove inside the first hollow sleeve block (11).
4. The sand and gravel screening device for engineering construction according to claim 1, characterized in that: The outer surface of the connecting plate (9) is fixedly mounted with a swing rod (10), and the swing rod (10) is arranged in a linear array.
5. A sand and gravel screening device for engineering construction according to claim 1, characterized in that: The top of the screening box (1) is fixedly installed with a feeding trough (25), and the feeding trough (25) is an opening that is larger at the top and smaller at the bottom.
6. A sand and gravel screening device for engineering construction according to claim 1, characterized in that: The discharge protrusion (24) is fixedly installed directly below the internal screening mesh (19) of the screening box (1), and the discharge protrusion (24) is inclined.
7. A sand and gravel screening device for engineering construction according to claim 2, characterized in that: The bottom of the screening box (1) is fixedly installed with a base (26) and the base (26) is presented around the bottom of the screening box (1). The baffle (23) is fixedly connected to the L-shaped support plates (18) on both sides.