Sand and gravel screening device for construction work

Abstract

The utility model provides building engineering sand and stone screening device, including first U type frame, second U type frame and screen cloth, first U type frame and second U type frame top all are seted up with first mount pad, be provided with first fixed establishment on the first mount pad, second U type frame top still is seted up with second mount pad, be provided with second fixed establishment on the second mount pad, screen cloth both sides all are fixedly connected with edge sealing piece, the edge sealing piece is pasted with first mounting block, screen cloth top fixedly connected with second mounting block, first U type frame and second U type frame bottom fixed mounting have same long seat, long seat bottom slidingly connected with deflector, this screening device adopts modularization design, is convenient for carrying and enters space limited place, is more flexible than integral type screening frame, in addition can make the fine material of screening and flow to both sides, reduce the material of screen cloth bottom center area and the phenomenon that will soon accumulate.

Description

Technical Field

[0001] This utility model relates to the field of sand and gravel screening, and more specifically, to a sand and gravel screening device for construction engineering. Background Technology

[0002] Screening of sand and gravel is a crucial step in the processing of construction aggregates. Its main purpose is to separate mixed aggregates into different grades based on particle size, ensuring that the final product has uniform particle size and a reasonable gradation, meeting the stringent requirements of various construction projects for aggregate strength and stability. Screening effectively removes soil, impurities, and non-compliant particles, improving the purity and quality of the sand and gravel aggregates, thereby guaranteeing the workability, strength, and durability of concrete. Currently, in indoor operations, small, traditional sand and gravel screening racks are typically used. Workers use shovels to shovel the raw sand and gravel onto the screening rack. The inclined screen, with its mesh size, grades the sand and gravel according to particle size, removing large stones and impurities, resulting in fine sand with uniform particle size that meets construction requirements. This process is one of the key preparatory steps in concrete mixing and mortar preparation, effectively ensuring the quality of building materials and the structural strength of the final building. This is a traditional but still widely used and effective method on many construction sites.

[0003] Existing sand and gravel screening racks are generally large in size, making them difficult to pass through narrow doorways or passageways when used indoors. Their movement and transportation are extremely inconvenient, limiting their application scenarios. Furthermore, sediment quickly accumulates directly under the screen during use, affecting screening efficiency and effectiveness. Therefore, we have proposed an improved sand and gravel screening device for construction engineering. Utility Model Content

[0004] To address the problems raised in the background art, this utility model provides the following technical solution: Sand and gravel screening devices for construction projects are designed to address the aforementioned issues.

[0005] The present invention is as follows: The device includes a first U-shaped frame, a second U-shaped frame, and a screen. A connecting rod is fixedly installed at the end of the first U-shaped frame, and a connecting slot is provided at the end of the second U-shaped frame. The connecting slot matches the connecting rod. A connecting mechanism is provided on the side wall of the second U-shaped frame. A first mounting seat is provided on the top of both the first and second U-shaped frames, and a first fixing mechanism is provided on the first mounting seat. A second mounting seat is also provided on the top of the second U-shaped frame, and a second fixing mechanism is provided on the second mounting seat. Edge sealing members are fixedly connected to both sides of the screen, and a first mounting block is adhered to the edge sealing member. A second mounting block is fixedly connected to the top of the screen. The same long seat is fixedly installed at the bottom of the first and second U-shaped frames, and a guide plate is slidably connected to the bottom of the long seat.

[0006] As a preferred technical solution of this utility model, the connecting mechanism includes a connecting bolt disposed on the side wall of the second U-shaped frame, the connecting bolt being used to fix the connecting rod in the connecting slot.

[0007] As a preferred technical solution of this utility model, the first mounting block is matched with the first mounting base, and the second mounting block is matched with the second mounting base.

[0008] As a preferred technical solution of this utility model, the first fixing mechanism includes a first fixing bolt disposed on the first mounting base, the first fixing bolt being used to fix the first mounting block inside the first mounting base.

[0009] As a preferred technical solution of this utility model, the second fixing mechanism includes a second fixing bolt disposed on the second mounting base, the second fixing bolt being used to fix the second mounting block inside the second mounting base.

[0010] As a preferred technical solution of this utility model, the bottom of the first U-shaped frame is provided with a first mounting bolt, and the bottom of the second U-shaped frame is provided with a second mounting bolt. Both the first mounting bolt and the second mounting bolt are used to fix the long seat to the bottom of the U-shaped frame.

[0011] As a preferred technical solution of this utility model, a slide rail is provided at the bottom of the long seat, and a slide bar is fixedly installed on the top of the guide plate, and the slide bar matches the slide rail.

[0012] As a preferred technical solution of this utility model, a first leg is fixedly installed at the bottom of the first U-shaped frame, and a second leg is fixedly installed at the bottom of the second U-shaped frame.

[0013] Compared with the prior art, the beneficial effects of this utility model are as follows: In the solution of this utility model: 1. Through the modular framework, it is easy to transport and enter places with limited space. It is more flexible than the integrated screening rack and solves the problem that the existing technology is difficult to pass through narrow doorways or passages when used indoors, and the movement and transportation are extremely inconvenient and the use scenarios are limited. 2. The detachable screen design allows for easy replacement of screens with different aperture sizes to meet various screening needs, and also enables the screen to be removed for cleaning. 3. By using guide plates, the falling material can be diverted to the left and right sides, allowing fine material to accumulate on the ground on both sides of the device instead of piling up in the center area directly below the screen. When material is urgently needed, workers do not need to wait for the screening to finish and can directly scoop up the screened fine material from both sides of the device. This solves the problem in existing technologies where material quickly accumulates under the screen, affecting the screening effect and efficiency. Attached Figure Description

[0014] Figure 1 A schematic diagram of the structure of the sand and gravel screening device for construction engineering provided by this utility model; Figure 2 A schematic diagram of the second U-shaped frame structure of the sand and gravel screening device for construction engineering provided by this utility model; Figure 3 A schematic diagram of the connection slot structure of the sand and gravel screening device for construction engineering provided by this utility model; Figure 4 A schematic diagram of the connecting rod structure of the sand and gravel screening device for construction engineering provided by this utility model; Figure 5 A schematic diagram of the screen structure of the sand and gravel screening device for construction engineering provided by this utility model; Figure 6 A schematic diagram of the long seat structure of the sand and gravel screening device for construction engineering provided by this utility model; Figure 7 A schematic diagram of the bottom structure of the sand and gravel screening device for construction engineering provided by this utility model; Figure 8 A schematic diagram of the slide bar structure of the sand and gravel screening device for construction engineering provided by this utility model.

[0015] The image shows: 1. First U-shaped frame; 2. Second U-shaped frame; 3. Screen; 4. Connecting rod; 5. Connecting slot; 6. First mounting base; 7. Second mounting base; 8. Edge sealing piece; 9. First mounting block; 10. Second mounting block; 11. Long seat; 12. Guide plate; 13. First fixing bolt; 14. Second fixing bolt; 15. First mounting bolt; 16. Second mounting bolt; 17. Slide rail; 18. Slide bar; 19. Second support leg; 20. First support leg; 21. Connecting bolt. Detailed Implementation

[0016] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of this utility model.

[0017] Therefore, the following detailed description of the embodiments of this utility model is not intended to limit the scope of the claimed utility model, but merely to illustrate some embodiments of the utility model. All other embodiments obtained by those skilled in the art based on the embodiments of this utility model without inventive effort are within the scope of protection of this utility model.

[0018] It should be noted that, unless otherwise specified, the embodiments and features and technical solutions in the present invention can be combined with each other.

[0019] It should be noted that similar labels and letters in the following figures indicate similar items. Therefore, once an item is defined in one figure, it does not need to be further defined and explained in subsequent figures.

[0020] In the description of this utility model, it should be noted that the terms "upper," "lower," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, or the orientation or positional relationship commonly used when the product is in use, or the orientation or positional relationship commonly understood by those skilled in the art. These terms are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation on this utility model. In addition, the terms "first," "second," etc., are only used to distinguish descriptions and should not be construed as indicating or implying relative importance.

[0021] Example: like Figure 1-8 As shown, this embodiment proposes a sand and gravel screening device for construction engineering, including a first U-shaped frame 1, a second U-shaped frame 2, and a screen 3. A connecting rod 4 is fixedly installed at the end of the first U-shaped frame 1, and a connecting slot 5 is opened at the end of the second U-shaped frame 2. The connecting slot 5 matches the connecting rod 4. During assembly, the connecting rod 4 at the end of the first U-shaped frame 1 is aligned with the connecting slot 5 at the end of the second U-shaped frame 2, so that the connecting rod 4 is inserted into the connecting slot 5. A connecting mechanism is provided on the side wall of the second U-shaped frame 2, and the connecting mechanism is used to fix the connecting rod 4 in the connecting slot 5. The first U-shaped frame 1 and the second U-shaped frame 2 are both provided with a first mounting seat 6 at the top. The first mounting seat 6 is provided with a first fixing mechanism for fixing the first mounting block 9. The second U-shaped frame 2 is also provided with a second mounting seat 7 at the top. The second mounting seat 7 is provided with a second fixing mechanism for fixing the second mounting block 10. The screen 3 is fixedly connected to both sides with edge sealing parts 8, and the screen 3 is reinforced by the edge sealing parts 8. The first mounting block 9 is adhered to the edge sealing parts 8. The screen 3 is fixedly connected to the top with a second mounting block 10. The first U-shaped frame 1 and the second U-shaped frame 2 are fixedly installed with the same long seat 11 at the bottom. The long seat 11 is slidably connected to a guide plate 12 at the bottom. The guide plate 12 can divert the falling material to the left and right sides.

[0022] The connecting mechanism includes a connecting bolt 21 disposed on the side wall of the second U-shaped frame 2. The connecting bolt 21 is used to fix the connecting rod 4 in the connecting slot 5. After the connecting rod 4 is inserted into the connecting slot 5, the connecting bolt 21 disposed on the side wall of the second U-shaped frame 2 is tightened to fix the connecting rod 4.

[0023] The first mounting block 9 matches the first mounting seat 6. Align the first mounting blocks 9 on both sides and place them into the first mounting seats 6 on the top of the two U-shaped frames. The second mounting block 10 matches the second mounting seat 7. Place the top second mounting block 10 into the second mounting seat 7 on the second U-shaped frame 2.

[0024] The first fixing mechanism includes a first fixing bolt 13 disposed on the first mounting base 6. The first fixing bolt 13 is used to fix the first mounting block 9 inside the first mounting base 6, and to fix the first mounting block 9 by rotating the first fixing bolt 13.

[0025] The second fixing mechanism includes a second fixing bolt 14 disposed on the second mounting base 7. The second fixing bolt 14 is used to fix the second mounting block 10 inside the second mounting base 7, and to fix the second mounting block 10 by rotating the second fixing bolt 14.

[0026] The first U-shaped frame 1 has a first mounting bolt 15 at its bottom, and the second U-shaped frame 2 has a second mounting bolt 16 at its bottom. Both the first mounting bolt 15 and the second mounting bolt 16 are used to fix the long seat 11 to the bottom of the U-shaped frame. A slide rail 17 is provided at the bottom of the long seat 11, and a slide bar 18 is fixedly installed on the top of the guide plate 12. The slide bar 18 matches the slide rail 17, so that the guide plate 12 is slidably connected to the long seat 11, and the slide bar 18 on the top of the guide plate 12 slides into the slide rail 17 at the bottom of the long seat 11.

[0027] The first U-shaped frame 1 has a first support leg 20 fixedly installed at its bottom, and the second U-shaped frame 2 has a second support leg 19 fixedly installed at its bottom to support the assembled frame.

[0028] Specifically, when using the sand and gravel screening device in this construction project: First, align the connecting rod 4 at the end of the first U-shaped frame 1 with the connecting slot 5 at the end of the second U-shaped frame 2, and insert the connecting rod 4 into the connecting slot 5. At this point, the two U-shaped frames are initially assembled into a complete mouth-shaped frame. Then, by tightening the connecting bolts 21 set on the side wall of the second U-shaped frame 2, the two parts are firmly fixed into a whole to prevent loosening during screening operations and ensure structural stability. The core frame of this device is composed of two independent modules, the first U-shaped frame 1 and the second U-shaped frame 2, which solves the problem that the integral screening frame is difficult to enter narrow spaces. During installation of the screen 3, align the first mounting blocks 9 on both sides and place them into the first mounting seats 6 on the top of the two U-shaped frames. At the same time, place the second mounting block 10 on the top into the second mounting seat 7 on the second U-shaped frame 2 to complete the initial positioning of the screen 3. Then, rotate the first fixing bolt 13 to fix it to the first mounting block 9; then rotate the second fixing bolt 14 to fix it to the second mounting block 10. Through the synergistic action of these two sets of bolts, the screen 3 is quickly, flatly, and firmly tensioned and fixed on the U-shaped frame. The installation of the screen 3 also adopts a modular quick-installation design, which makes it easy to replace the screen 3 with different aperture sizes according to different screening needs, and to remove the screen 3 for cleaning. The long seat 11 is fixedly installed at the bottom of the U-shaped frame using the first mounting bolt 15 and the second mounting bolt 16. Then, the guide plate 12 is slidably connected to the long seat 11, so that the slide bar 18 at the top of the guide plate 12 slides into the slide rail 17 at the bottom of the long seat 11. This design can divert the falling material to the left and right sides, so that the fine material gathers on the ground on both sides of the device, instead of piling up in the center area directly below the screen 3. This effectively avoids the material under the screen from piling up too high and hindering subsequent screening. Moreover, when materials are urgently needed, workers do not need to wait for the screening to finish and can directly scoop up the screened fine material from both sides of the device, realizing the simultaneous screening and material collection, which greatly improves the continuity of operation and work efficiency.

[0029] All technical features in this embodiment can be freely combined according to actual needs.

[0030] The above embodiments are preferred implementations of this utility model. In addition, this utility model can also be implemented in other ways. Any obvious substitutions without departing from the concept of this technical solution are within the protection scope of this utility model.

Claims

1. A sand and gravel screening device for construction engineering, comprising a first U-shaped frame (1), a second U-shaped frame (2), and a screen (3), characterized in that, A connecting rod (4) is fixedly installed at the end of the first U-shaped frame (1), and a connecting slot (5) is opened at the end of the second U-shaped frame (2). The connecting slot (5) matches the connecting rod (4). A connecting mechanism is provided on the side wall of the second U-shaped frame (2). A first mounting seat (6) is opened at the top of both the first U-shaped frame (1) and the second U-shaped frame (2). A first fixing mechanism is provided on the first mounting seat (6). A second mounting seat (7) is also opened at the top of the second U-shaped frame (2). A second fixing mechanism is provided on the second mounting seat (7). An edge sealing piece (8) is fixedly connected to both sides of the screen (3). A first mounting block (9) is adhered to the edge sealing piece (8). A second mounting block (10) is fixedly connected to the top of the screen (3). The same long seat (11) is fixedly installed at the bottom of the first U-shaped frame (1) and the second U-shaped frame (2). A guide plate (12) is slidably connected to the bottom of the long seat (11).

2. The sand and gravel screening device for construction engineering according to claim 1, characterized in that, The connecting mechanism includes a connecting bolt (21) disposed on the side wall of the second U-shaped frame (2), the connecting bolt (21) being used to fix the connecting rod (4) in the connecting slot (5).

3. The sand and gravel screening device for construction engineering according to claim 1, characterized in that, The first mounting block (9) is matched with the first mounting base (6), and the second mounting block (10) is matched with the second mounting base (7).

4. The sand and gravel screening device for construction engineering according to claim 1, characterized in that, The first fixing mechanism includes a first fixing bolt (13) disposed on the first mounting base (6), the first fixing bolt (13) being used to fix the first mounting block (9) inside the first mounting base (6).

5. The sand and gravel screening device for construction engineering according to claim 1, characterized in that, The second fixing mechanism includes a second fixing bolt (14) disposed on the second mounting base (7), the second fixing bolt (14) being used to fix the second mounting block (10) inside the second mounting base (7).

6. The sand and gravel screening device for construction engineering according to claim 1, characterized in that, The first U-shaped frame (1) is provided with a first mounting bolt (15) at the bottom, and the second U-shaped frame (2) is provided with a second mounting bolt (16) at the bottom. The first mounting bolt (15) and the second mounting bolt (16) are both used to fix the long seat (11) at the bottom of the U-shaped frame.

7. The sand and gravel screening device for construction engineering according to claim 1, characterized in that, The bottom of the long seat (11) is provided with a slide rail (17), and the top of the guide plate (12) is fixedly installed with a slide bar (18), which matches the slide rail (17).

8. The sand and gravel screening device for construction engineering according to claim 1, characterized in that, The first U-shaped frame (1) has a first leg (20) fixedly installed at its bottom, and the second U-shaped frame (2) has a second leg (19) fixedly installed at its bottom.

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