Sand screening machine for constructional engineering

Abstract

The utility model relates to the field of constructional engineering, in particular to a sand screening machine for constructional engineering, which comprises a mounting frame and a screen, the right side surface of the mounting frame is fixedly connected with two springs I, the right end of each spring I is fixedly connected with a sliding block, and two guide blocks are moved to drive corresponding clamping blocks to move; at the moment, a second spring is compressed by a guide block, limiting of a clamping block to a sliding block is relieved, the sliding block can slide out of the interior of a connecting block, the mounting frame and the sliding block are limited through a first spring, the screen can be detached, and on the contrary, the screen needing to be mounted is moved above the mounting frame, and the sliding block is connected with the connecting block; and the clamping blocks are automatically contracted through the inclined surfaces of the clamping blocks, and when the sliding blocks move to the limiting positions, the clamping blocks are locked under the action of the second springs, so that the effect that the screen cloth can be conveniently replaced by the device is achieved, the screen cloth with different thickness degrees can be conveniently and rapidly replaced, the replacement time is shortened, and the working efficiency is improved.

Description

Technical Field

[0001] This utility model relates to the field of building engineering technology, specifically a sand screening machine for building engineering. Background Technology

[0002] In construction projects, sand screening is essential. Generally, the sand purchased will contain some solid impurities such as large stones. When plastering, large stones will seriously affect its performance and cause the plastering to fail to meet the construction requirements. Therefore, before mixing plastering concrete, it is often necessary to use a sand screening machine to screen the sand and remove the stones and other impurities from the sieve.

[0003] A search revealed a Chinese patent with publication number CN221657094U that discloses a sand screening machine for construction engineering. Its key technical point is that it solves the problems of inconvenience in automatically and repeatedly screening sand and inconvenience in automatically conveying and collecting the screened sand.

[0004] However, in the prior art, the screen and the device frame are not easy to install and disassemble, resulting in long replacement time when different screens of different coarseness are needed, which affects work efficiency. In order to solve the problem of the inconvenience of screen installation and replacement in the prior art, this application sets a quick-disassembly structure between the screen and spring one, so that the screen can be quickly disassembled through the cooperation of the locking block and spring two, so as to facilitate the replacement and installation of screens of different coarseness, reduce replacement time, and improve work efficiency. Therefore, a new solution is needed to solve this problem. Utility Model Content

[0005] The aforementioned background technology addresses the shortcomings and defects of existing technologies, such as the inability to quickly replace screens of different coarseness, resulting in long replacement times and reduced work efficiency.

[0006] This utility model discloses a sand screening machine for construction engineering, including a mounting frame and a screen. Two springs are fixedly connected to the right side of the mounting frame, and a sliding block is fixedly connected to the right end of each spring. Two connecting blocks and a mounting block are fixedly connected to the left side of the screen. The outer surface of each sliding block is slidably connected to the inner wall of the corresponding connecting block. Two springs are fixedly connected to the inner wall of the mounting block, and a guide block is fixedly connected to the opposite end of each spring. The outer surface of each guide block is slidably connected to the inner wall of the mounting block, and a locking block is fixedly connected to the opposite side of each guide block.

[0007] Furthermore, a roller component is fixedly installed on the right side of the screen, and a base plate is provided below the screen. Two support frames, motor one and motor two are fixedly connected to the upper surface of the base plate, and the upper surface of each support frame is fixedly connected to the bottom surface of the mounting frame.

[0008] Furthermore, the output shaft of the motor is fixedly connected to a pulley, the outer surface of the pulley is connected to a belt assembly, the inner wall of the belt assembly is connected to a pulley, and the inner wall of the pulley is fixedly connected to a connecting rod.

[0009] Furthermore, a cam is fixedly connected to the outer surface of the connecting rod, and two limiting frames are rotatably connected to the outer surface of the connecting rod, with the bottom surface of each limiting frame fixedly connected to the upper surface of the base plate.

[0010] Furthermore, the mounting bracket has two threaded rods rotatably connected to both its front and back sides. Each threaded rod has a threaded block threadedly connected to its outer surface, and each threaded block has a roller rotatably connected to its inner wall.

[0011] Furthermore, the output shaft of the second motor is fixedly connected to a pulley three, the outer surface of the pulley three is connected to a belt assembly two, and the inner wall of the belt assembly two is connected to a pulley four.

[0012] Furthermore, two drive rollers and a drive belt are provided above the base plate. Each drive roller is connected to the drive belt, and the outer surface of each drive roller is rotatably connected to the inner wall of the corresponding support frame. The front of the pulley four is fixedly connected to the outer surface of the corresponding drive roller.

[0013] Compared with the prior art, the beneficial effects of this utility model are as follows:

[0014] 1. This utility model incorporates components such as a spring, a sliding block, a spring, a guide block, and a locking block. Moving the two guide blocks causes the corresponding locking blocks to move, compressing the spring and releasing the locking block from its limit. The sliding block then slides out from inside the connecting block. The spring then limits the mounting frame and the sliding block, allowing the screen to be disassembled. Conversely, moving the screen to be installed above the mounting frame and connecting the sliding block to the connecting block allows the locking block to automatically retract due to its inclined surface. When the sliding block reaches its limit position, the locking block locks under the action of the spring. This device facilitates easy screen replacement, allowing for quick replacement of screens of different coarseness, reducing replacement time, and improving work efficiency.

[0015] 2. This utility model incorporates components such as a roller assembly, a motor, a pulley, a belt assembly, a pulley, a connecting rod, and a cam. After the screen is installed, rotating the corresponding threaded rod moves the corresponding threaded block. At this time, the surface of the roller contacts the upper frame of the screen, reducing frictional resistance during screen movement. The motor drives the pulley to rotate, which in turn drives the connecting rod to rotate. The connecting rod then drives the cam to rotate, and the cam's arc-shaped surface contacts the surface of the roller assembly. When the cam rotates one revolution, the roller assembly drives the screen to reciprocate twice. Under the action of the spring, the reciprocating motion of the screen is facilitated, increasing the frequency of the screen's reciprocating motion and improving sand screening efficiency. Attached Figure Description

[0016] The accompanying drawings, which are included to provide a further understanding of this application and form part of this application, illustrate exemplary embodiments and are used to explain this application, but do not constitute an undue limitation of this application. In the drawings:

[0017] Figure 1 This is a schematic diagram of the overall three-dimensional structure of this utility model;

[0018] Figure 2 This is a schematic diagram of the main structure of this utility model;

[0019] Figure 3 This is a schematic diagram of the connection structure between pulley three and belt assembly two of this utility model;

[0020] Figure 4 This is a schematic diagram of the connection structure between the cam and the connecting rod of this utility model;

[0021] Figure 5 This is a schematic diagram of the connection structure between the spring and the guide block of this utility model.

[0022] In the diagram: 1. Mounting frame; 2. Screen; 3. Spring 1; 4. Sliding block; 5. Connecting block; 6. Mounting block; 7. Spring 2; 8. Guide block; 9. Locking block; 10. Roller component; 11. Support frame; 12. Base plate; 13. Motor 1; 14. Pulley 1; 15. Belt group 1; 16. Pulley 2; 17. Threaded rod; 18. Threaded block; 19. Roller; 20. Limiting frame; 21. Connecting rod; 22. Cam; 23. Motor 2; 24. Pulley 3; 25. Belt group 2; 26. Pulley 4; 27. Transmission belt; 28. Transmission roller. Detailed Implementation

[0023] The following illustrations will reveal several embodiments of the present invention. For clarity, many physical details will be described in the following description. However, it should be understood that these physical details should not be used to limit the present invention. That is, in some embodiments of the present invention, these physical details are not essential. Furthermore, for the sake of simplicity, some conventional structures and components will be shown in a simple schematic manner in the illustrations.

[0024] Please see Figure 1 , Figure 2 , Figure 3 , Figure 4 , Figure 5 This utility model discloses a sand screening machine for construction engineering, including a mounting frame 1 and a screen 2. Two springs 3 are fixedly connected to the right side of the mounting frame 1. The springs 3 are installed on the right side of the mounting frame 1 to achieve the positioning and installation effect of the springs 3. A sliding block 4 is fixedly connected to the right end of each spring 3. The sliding block 4 is installed on the right end of the spring 3, and the spring 3 can realize the rebound of the sliding block 4. Two connecting blocks 5 and a mounting block 6 are fixedly connected to the left side of the screen 2. The connecting blocks 5 and the mounting block 6 are installed on the left side of the screen 2 to achieve the positioning and installation effect of the connecting blocks 5 and the mounting block 6.

[0025] like Figure 5 As shown, the outer surface of each sliding block 4 is slidably connected to the inner wall of the corresponding connecting block 5. The sliding block 4 is connected to the corresponding connecting block 5 to form a sliding connection, thereby limiting the sliding block 4. Two springs 7 are fixedly connected to the inner wall of the mounting block 6. The springs 7 are installed on the inner wall of the mounting block 6 to form a fixed connection, thereby achieving the positioning and installation effect of the springs 7. A guide block 8 is fixedly connected to the opposite end of each spring 7. The guide block 8 is installed at the opposite end of the springs 7 to achieve the pressing of the guide block 8. The movement of the guide block 8 can compress the spring 7, and conversely, the action of the spring 7 can press the guide block 8 tightly.

[0026] In this embodiment, the outer surface of each guide block 8 is slidably connected to the inner wall of the mounting block 6. The mounting guide pin is installed on the surface of the corresponding guide block 8, and the mounting block 6 is connected to the guide block 8 and the guide pin in a sliding connection to limit the guide block 8. Each guide block 8 has a locking block 9 fixedly connected to the side that is far apart from each other. The locking block 9 is installed on the side that is far apart from each other of the corresponding guide block 8 to achieve the positioning and installation of the locking block 9. The surface of the locking block 9 has a ring of protrusions. The connecting block 5 has a matching strip groove inside to limit the locking block 9. The inclined surface of the locking block 9 ensures that when the sliding block 4 moves on the inner wall of the connecting block 5, it automatically pushes the locking block 9 open.

[0027] Combination Figure 1 and Figure 4 A roller component 10 is fixedly installed on the right side of the screen 2. The roller component 10 is pressed against the right side of the screen 2 to achieve positioning and installation. A base plate 12 is provided below the screen 2. Two support frames 11, motor 13 and motor 23 are fixedly connected to the upper surface of the base plate 12. The base plate 12 is placed below the screen 2, and the support frames 11, motor 13 and motor 23 are installed on the upper surface of the base plate 12 to support the support frames 11, motor 13 and motor 23. The upper surface of each support frame 11 is fixedly connected to the bottom surface of the mounting frame 1. The support frame 11 is connected to the mounting frame 1 to support the mounting frame 1.

[0028] In a preferred embodiment, a pulley 14 is fixedly connected to the output shaft of a motor 13. The pulley 14 is mounted on the output shaft of the motor 13 and is fixed. The pulley 14 can be rotated by the motor 13. A belt assembly 15 is driven to the outer surface of the pulley 14. A pulley 26 is driven to the inner wall of the belt assembly 15. The belt assembly 15 is placed on the surface of the pulley 14, and the pulley 26 is connected to the belt assembly 15. The transmission is achieved through the pulley 14, the belt assembly 15, and the pulley 26. A connecting rod 21 is fixedly connected to the inner wall of the pulley 26. The connecting rod 21 is mounted on the inner wall of the pulley 26, thereby realizing the rotation of the connecting rod 21.

[0029] In this embodiment, a cam 22 is fixedly connected to the outer surface of the connecting rod 21. The cam 22 is mounted on the surface of the connecting rod 21 and is set as a fixed connection. The rotation of the connecting rod 21 realizes the rotation of the cam 22. The surface of the cam 22 has two protrusions. Through the contact between the protrusions and the surface of the roller component 10, the screen 2 can be moved. Two limiting frames 20 are rotatably connected to the outer surface of the connecting rod 21. The bottom surface of each limiting frame 20 is fixedly connected to the upper surface of the base plate 12. The limiting frame 20 is mounted on the outer surface of the connecting rod 21 and is set as a rotatable connection. The bottom surface of the limiting frame 20 is connected to the base plate 12 to realize the support of the limiting frame 20.

[0030] Looking back Figure 4The mounting bracket 1 has two threaded rods 17 rotatably connected to its front and back sides. The threaded rods 17 are installed on the front and back sides of the mounting bracket 1 and are configured as rotatable connections to limit the movement of the threaded rods 17. Each threaded rod 17 has a threaded block 18 threadedly connected to its outer surface. The threaded block 18 is installed on the surface of the corresponding threaded rod 17 and is configured as a threaded connection. The surface of the threaded block 18 is slidably connected to the groove on the surface of the mounting bracket 1. The threaded block 18 can be moved by rotating the threaded rod 17. Each threaded block 18 has a roller 19 rotatably connected to its inner wall. The roller 19 is installed on the inner wall of the corresponding threaded block 18. After the threaded block 18 is installed, the surface of the roller 19 contacts the frame on the upper surface of the screen 2, which can reduce frictional resistance.

[0031] In a preferred embodiment, a pulley 24 is fixedly connected to the output shaft of motor 23. The pulley 24 is mounted on the output shaft of motor 23, and the rotation of pulley 24 can be achieved by motor 23. A belt assembly 25 is driven to the outer surface of pulley 24, and a pulley 26 is driven to the inner wall of belt assembly 25. Belt assembly 25 is disposed on the surface of pulley 24, and pulley 26 is disposed on the other side of belt assembly 25. The rotation of pulley 26 can be achieved by pulley 24, belt assembly 25, and pulley 26.

[0032] In this embodiment, two drive rollers 28 and a drive belt 27 are provided above the base plate 12. Each drive roller 28 is connected to the drive belt 27. The drive rollers 28 and the drive belt 27 are placed above the base plate 12 and connected to achieve transmission, facilitating the transfer of the screened sieve. The outer surface of each drive roller 28 is rotatably connected to the inner wall of the corresponding support frame 11. The connection between the drive roller 28 and the support frame 11 is configured as a rotatable connection, achieving a limiting effect on the drive roller 28. The front of the pulley 26 is fixedly connected to the outer surface of the corresponding drive roller 28. The connection between the pulley 26 and the corresponding drive roller 28 facilitates the rotation of the drive roller 28.

[0033] The implementation principle is as follows: Motor 13 drives pulley 14 to rotate, which in turn drives connecting rod 21 to rotate via pulley 14, belt assembly 15, and pulley 26. Connecting rod 21 drives cam 22 to rotate, and the arc-shaped surface of cam 22 contacts the surface of roller 10. When cam 22 rotates one revolution, roller 10 drives screen 2 to reciprocate twice. Under the action of spring 3, the reciprocating motion of screen 2 is facilitated, screening the sand. The screened sand falls onto the surface of the lower transmission belt 27, and is then further processed by motor 23, pulley 34, belt assembly 25, pulley 46, transmission belt 27, and transmission roller 28. When the screen 2 needs to be replaced with a different coarseness, the two guide blocks 8 are moved to drive the corresponding locking blocks 9 to move. At this time, the guide blocks 8 compress the second spring 7, and the locking blocks 9 release the limit on the sliding block 4. The sliding block 4 can then slide out inside the connecting block 5. The mounting bracket 1 and the sliding block 4 are limited by the first spring 3, and the screen 2 can be disassembled. Then, the screen 2 to be installed is moved, and the sliding block 4 is connected to the connecting block 5. The inclined surface of the locking block 9 causes the locking block 9 to retract automatically. When the sliding block 4 moves to the limit position, the locking block 9 is locked by the action of the second spring 7, realizing the quick replacement of the screen 2.

[0034] The above description is merely an embodiment of this utility model and is not intended to limit the scope of this utility model. Various modifications and variations can be made to this utility model by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principle of this utility model should be included within the scope of the claims of this utility model.

Claims

1. A sand screening machine for construction engineering, comprising a mounting frame (1) and a screen (2), characterized in that: Two springs (3) are fixedly connected to the right side of the mounting bracket (1), and a sliding block (4) is fixedly connected to the right end of each spring (3). Two connecting blocks (5) and a mounting block (6) are fixedly connected to the left side of the screen (2). The outer surface of each sliding block (4) is slidably connected to the inner wall of the corresponding connecting block (5). Two springs (7) are fixedly connected to the inner wall of the mounting block (6). A guide block (8) is fixedly connected to the opposite end of each spring (7). The outer surface of each guide block (8) is slidably connected to the inner wall of the mounting block (6). A locking block (9) is fixedly connected to the opposite side of each guide block (8).

2. The sand screening machine for construction engineering according to claim 1, characterized in that: A roller component (10) is fixedly installed on the right side of the screen (2). A base plate (12) is provided below the screen (2). Two support frames (11), motor one (13) and motor two (23) are fixedly connected to the upper surface of the base plate (12). The upper surface of each support frame (11) is fixedly connected to the bottom surface of the mounting frame (1).

3. A sand screening machine for construction engineering according to claim 2, characterized in that: The output shaft of the motor (13) is fixedly connected to a pulley (14), the outer surface of the pulley (14) is connected to a belt assembly (15), the inner wall of the belt assembly (15) is connected to a pulley (16), and the inner wall of the pulley (16) is fixedly connected to a connecting rod (21).

4. A sand screening machine for construction engineering according to claim 3, characterized in that: A cam (22) is fixedly connected to the outer surface of the connecting rod (21), and two limiting frames (20) are rotatably connected to the outer surface of the connecting rod (21). The bottom surface of each limiting frame (20) is fixedly connected to the upper surface of the base plate (12).

5. A sand screening machine for construction engineering according to claim 1, characterized in that: The mounting bracket (1) has two threaded rods (17) rotatably connected to its front and back sides. Each threaded rod (17) has a threaded block (18) threadedly connected to its outer surface, and each threaded block (18) has a roller (19) rotatably connected to its inner wall.

6. A sand screening machine for construction engineering according to claim 2, characterized in that: The output shaft of the second motor (23) is fixedly connected to a third pulley (24), the outer surface of the third pulley (24) is connected to a second belt group (25), and the inner wall of the second belt group (25) is connected to a fourth pulley (26).

7. A sand screening machine for construction engineering according to claim 6, characterized in that: The base plate (12) is provided with two transmission rollers (28) and a transmission belt (27) above it. Each transmission roller (28) is connected to the transmission belt (27) for transmission. The outer surface of each transmission roller (28) is rotatably connected to the inner wall of the corresponding support frame (11). The front of the pulley (26) is fixedly connected to the outer surface of the corresponding transmission roller (28).

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