Fine sand screening mechanism for construction site

Abstract

The fine sand screening mechanism for the construction site comprises a machine box shell and a push-pull handrail fixedly installed on the back portion of the machine box shell, a supporting moving structure is arranged outside the machine box shell, and a vibration sand screening structure is arranged inside the machine box shell. The supporting and moving structure comprises a base fixedly installed outside the case shell, and lifting plates are slidably installed on the two sides of the base. According to the fine sand screening mechanism for the construction site, fine sand is screened through operation of the vibrating sand screening structure, two threaded rods are controlled to rotate to force two lifting plates to descend, four moving wheels can be pushed out of the bottom of the case shell, and at the moment, the device can be supported by the four moving wheels to slide; when the device moves to a proper position, two threaded rods are reversely rotated to drive four moving wheels to be retracted into the case shell, and the device is compact in structure and rapid to move, so that the effect of convenient and flexible use is achieved.

Description

Technical Field

[0001] The utility model relates to the technical field of construction site, in particular to a fine sand screening mechanism for construction sites. Background Art

[0002] Refined quartz sand is an important industrial mineral raw material, widely used in glass, casting, ceramics and refractory materials, metallurgy, construction, chemical industry, plastics, rubber, abrasives and other industries. Refined sand is one of the main raw materials for construction on construction sites.

[0003] The Chinese patent publication number CN215656428U proposed "a medium sand fine screening device for construction". The technical solution proposed the problem that "the existing medium sand fine screening device for construction, during use, is easy to mix small or substandard sand and gravel into the screening and flow into the construction site, resulting in poor use of the site sand and gravel". The utility model provides the following technical solution: "Under the action of the threaded conveying rod of the rotating structure formed by the motor and the conveying pipeline, the sand and gravel complete the preliminary separation of impurities and large pieces of sand and gravel, and then enter the conveying pipeline from the discharge pipe. Then, under the rotation of the threaded conveying rod, the medium sand and gravel needed at the construction site flows from the second opening and the medium sand mesh plate to the discharge pipe, and is put into use at the construction site, which is beneficial to improving the sand and gravel screening effect of the equipment."

[0004] The above scheme has the following defects: the outside of the above device lacks a supporting and movable structure, and the maneuverability is poor. The equipment for screening sand is often moved during construction on the construction site. Therefore, the above fine screening device is not convenient and flexible when used on the construction site. Therefore, a fine sand screening mechanism for construction sites is proposed to solve the above problem. Utility Model Content

[0005] In view of the deficiencies in the prior art, the utility model provides a fine sand screening mechanism for a construction site, which has the advantages of being convenient and flexible to use.

[0006] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a fine sand screening mechanism for construction sites, comprising a chassis shell and a push-pull handrail fixedly installed on the back of the chassis shell, a supporting movable structure is arranged on the outside of the chassis shell, and a vibrating sand screening structure is arranged on the inside of the chassis shell.

[0007] The supporting movable structure includes a base fixedly installed on the outside of the chassis shell, lifting plates are slidably installed on both sides of the base, two movable wheels that penetrate the bottom of the base are fixedly installed on the bottom of the two lifting plates, side support plates are fixedly installed on both sides of the base, and threaded rods that penetrate the inside of the lifting plates are rotatably installed on the tops of the two side support plates.

[0008] The vibrating sand screening structure includes connecting blocks fixedly installed on both sides of the inner cavity of the chassis shell. Springs are fixedly installed on the tops of the four connecting blocks. An inner frame is fixedly installed on the tops of the four springs. A cross plate is fixedly installed inside the inner frame. A vibrating motor is fixedly installed at the bottom of the cross plate. A screen is fixedly installed inside the inner frame above the cross plate. Wide sand discharge cylinders are fixedly installed on both sides of the inner frame. Guide shovels are fixedly installed on both sides of the chassis shell at the bottoms of the wide sand discharge cylinders. A receiving drawer is slidably installed on the front of the base and penetrates into its interior.

[0009] Furthermore, the exterior of the chassis shell is square-shaped, the front of the base is in a "U" shape structure, and the two moving wheels are respectively located at one end near the front and rear sides of the lifting plate.

[0010] Furthermore, the moving wheels are slidably connected to the base, the side support plates are located on the tops of the lifting plates, and the two threaded rods are rotatably installed on the top of the base.

[0011] Furthermore, the threaded rods are threadedly connected to the lifting plates, and rotary handles are fixedly installed on the tops of the two threaded rods.

[0012] Furthermore, the connecting blocks are located at the waist position of the chassis shell, the volume of the inner frame is smaller than the volume of the chassis shell, and the inner frame is located inside the chassis shell.

[0013] Furthermore, the cross plate is located at one end near the bottom of the inner frame, the vibrating motor is located at the midpoint of the cross plate, and the top of the screen inclines towards both sides.

[0014] Furthermore, the two wide sand discharge cylinders are connected to the inner frame in a through manner, the two wide sand discharge cylinders are both located at one end near the screen, and the receiving drawer is located at the bottom of the chassis shell.

[0015] Compared with the prior art, the technical solution of the present application has the following beneficial effects:

[0016] The fine sand screening mechanism for construction sites screens fine sand through the operation of the vibrating sand screening structure. By rotating the two threaded rods to force the two lifting plates to descend, the four moving wheels can be pushed out from the bottom of the chassis shell. At this time, the device can be supported and slid by the four moving wheels. When the device moves to a suitable position, rotating the two threaded rods in the reverse direction can drive the four moving wheels to retract into the interior of the chassis shell. The device has a compact structure and fast movement, thus achieving the effect of convenient and flexible use. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a schematic structural diagram of the present utility model;

[0018] Figure 2This is the rear view of the structure of the present utility model;

[0019] Figure 3 This is the exploded view of the components of the present utility model;

[0020] Figure 4 This is the present utility model Figure 3 The enlarged schematic diagram of the structure at position A in it;

[0021] Figure 5 This is the schematic diagram of the connection structure between the threaded rod and the lifting plate of the present utility model.

[0022] In the figure: 1. Chassis shell; 101. Push-pull armrest; 2. Base; 3. Lifting plate; 4. Movable wheel; 5. Side armrest plate; 6. Threaded rod; 7. Connecting block; 8. Spring; 9. Built-in frame; 10. Cross plate; 11. Vibration motor; 12. Screen mesh; 13. Wide sand discharge cylinder; 14. Material guiding shovel; 15. Material receiving drawer. Specific implementation manners

[0023] Next, the technical solutions in the embodiments of the present utility model will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all the embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without making creative efforts shall fall within the protection scope of the present utility model.

[0024] Please refer to Figure 1-5 , a fine sand screening mechanism for construction sites in this embodiment, includes a chassis shell 1 and a push-pull armrest 101 fixedly installed on the back of the chassis shell 1. The outside of the chassis shell 1 is in a square frame shape. A support and movement structure is arranged outside the chassis shell 1, and a vibrating sand screening structure is arranged inside the chassis shell 1.

[0025] The support and movement structure includes a base 2 fixedly installed outside the chassis shell 1. The front of the base 2 is in a "凵" shape structure. Two lifting plates 3 are slidably installed on both sides of the base 2. Two movable wheels 4 are fixedly installed at the bottom of the two lifting plates 3 and penetrate through the bottom of the base 2. The two movable wheels 4 are respectively located at one end near the front and rear sides of the lifting plate 3. The movable wheels 4 are slidably connected to the base 2. The four movable wheels 4 extending out of the bottom of the base 2 can support the device to move on the ground.

[0026] Side support plates 5 are fixedly installed on both sides of the base 2, and the side support plates 5 are located at the top of the lifting plate 3. Threaded rods 6 that penetrate into the inside of the lifting plate 3 are rotatably installed on the top of the two side support plates 5. The two threaded rods 6 are rotatably installed on the top of the base 2. The two threaded rods 6 are respectively supported on the top of the base 2 for rotation by the two side support plates 5. The threaded rods 6 are threadedly connected to the lifting plate 3. Rotating handles are fixedly installed on the top of the two threaded rods 6. The installed rotating handles are convenient for controlling the threaded rods 6 to rotate. Controlling the two threaded rods 6 to rotate forward and backward can drive the two lifting plates 3 to rise and fall respectively, and then the two lifting plates 3 can respectively drive the two moving wheels 4 to rise and fall.

[0027] The vibrating sand screening structure includes connecting blocks 7 fixedly installed on both sides of the inner cavity of the chassis shell 1, the connecting blocks 7 are located at the waist position of the chassis shell 1, springs 8 are fixedly installed on the tops of the four connecting blocks 7, and built-in frames 9 are fixedly installed on the tops of the four springs 8. The volume of the built-in frame 9 is smaller than the volume of the chassis shell 1, and the built-in frame 9 is located inside the chassis shell 1. The built-in frame 9 is supported inside the chassis shell 1 by four springs 8. A cross plate 10 is fixedly installed inside the built-in frame 9. The cross plate 10 is located at one end close to the bottom of the built-in frame 9. A vibration motor 11 is fixedly installed on the bottom of the cross plate 10. The vibration motor 11 is located at the midpoint of the cross plate 10. The operation of the vibration motor 11 can drive the built-in frame 9 outside the cross plate 10 to vibrate inside the chassis shell 1.

[0028] A screen 12 located at the top of the horizontal plate 10 is fixedly installed inside the built-in frame 9, and the top of the screen 12 is inclined to both sides. Wide sand-discharging cylinders 13 are fixedly installed on both sides of the built-in frame 9. The two wide sand-discharging cylinders 13 are through-connected with the built-in frame 9, and the two wide sand-discharging cylinders 13 are located at one end close to the screen 12. A material guiding shovel 14 located at the bottom of the wide sand-discharging cylinder 13 is fixedly installed on both sides of the chassis shell 1. The sand falling out of the wide sand-discharging cylinder 13 is caught by the material guiding shovel 14 and guided to the outside. A material receiving drawer 15 that penetrates into the interior is slidably installed on the front of the base 2. The material receiving drawer 15 is located at the bottom of the chassis shell 1, and the screen 12 and the sand material inside it are driven to vibrate together through the built-in frame 9. Then the fine sand inside the built-in frame 9 falls into the internal storage of the material receiving drawer 15 through the screen 12, and the coarse sand is intercepted by the screen 12 and shaken out of the outside from the two wide sand-discharging cylinders 13.

[0029] The working principle of the above embodiment is:

[0030] When used on the construction site, the two threaded rods 6 are rotated forward to force the two lifting plates 3 to descend, so that the four moving wheels 4 can be pushed out of the bottom of the chassis shell 1. At this time, the bottom of the device is supported by the four moving wheels 4, and then the device can be easily pushed to the required position by holding the push-pull handrail 101. When the device moves to the appropriate position, the two threaded rods 6 are rotated in the opposite direction to force the two lifting plates 3 to rise, so as to drive the four moving wheels 4 to be retracted into the interior of the chassis shell 1. At this time, the bottom of the device is supported by the chassis shell 1, and then the sand material can be put into the interior of the built-in frame 9. Then the vibration motor 11 runs to drive the built-in frame 9 to vibrate, driving the screen 12 and the sand material to shake. Subsequently, the fine sand inside the built-in frame 9 is affected by the vibration and falls into the internal storage of the receiving bin 15 through the screen 12. The coarse sand is intercepted by the screen 12 and shaken out of the outside through the two sand-discharging wide cylinders 13.

[0031] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device. In the absence of further restrictions, the elements defined by the sentence "comprise a ..." do not exclude the existence of other identical elements in the process, method, article or device including the elements.

[0032] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A fine sand screening mechanism for a construction site, comprising a housing (1) and a push-pull handrail (101) fixedly mounted on the back of the housing (1), characterized in that: A support and moving structure is arranged outside the chassis housing (1), and a vibrating sand screening structure is arranged inside the chassis housing (1). The support and moving structure includes a base (2) fixedly installed outside the chassis housing (1). Lifting plates (3) are slidably installed on both sides of the base (2). Two moving wheels (4) penetrating to the bottom of the base (2) are fixedly installed at the bottoms of the two lifting plates (3). Side support plates (5) are fixedly installed on both sides of the base (2). Threaded rods (6) penetrating to the inside of the lifting plates (3) are rotatably installed at the tops of the two side support plates (5). The vibrating sand screening structure includes connecting blocks (7) fixedly installed on both sides of the inner cavity of the chassis housing (1). Springs (8) are fixedly installed at the tops of the four connecting blocks (7). An inner frame (9) is fixedly installed at the tops of the four springs (8). A horizontal plate (10) is fixedly installed inside the inner frame (9). A vibrating motor (11) is fixedly installed at the bottom of the horizontal plate (10). A screen (12) is fixedly installed at the top of the inner frame (9) and above the horizontal plate (10). Sand discharge wide cylinders (13) are fixedly installed on both sides of the inner frame (9). Guide shovels (14) are fixedly installed on both sides of the chassis housing (1) and at the bottoms of the sand discharge wide cylinders (13). A receiving drawer (15) penetrating to the inside of the base (2) is slidably installed on the front of the base (2).

2. The fine sand screening mechanism for construction sites according to claim 1, characterized in that: The outside of the chassis housing (1) is in a square frame shape. The front of the base (2) is in a "U" shape structure. The two moving wheels (4) are respectively located at one ends near the front and rear sides of the lifting plate (3).

3. The fine sand screening mechanism for construction sites according to claim 1 is characterized in that: The moving wheels (4) are slidably connected to the base (2). The side support plates (5) are located at the tops of the lifting plates (3). The two threaded rods (6) are rotatably installed at the tops of the base (2).

4. The fine sand screening mechanism for construction sites according to claim 1, characterized in that: The threaded rods (6) are threadedly connected to the lifting plates (3). Rotating handles are fixedly installed at the tops of the two threaded rods (6).

5. The fine sand screening mechanism for construction sites according to claim 1, characterized in that: The connecting blocks (7) are located at the waist position of the chassis housing (1). The volume of the inner frame (9) is smaller than the volume of the chassis housing (1). The inner frame (9) is located inside the chassis housing (1).

6. The fine sand screening mechanism for construction sites according to claim 1, characterized in that: The horizontal plate (10) is located at one end near the bottom of the inner frame (9). The vibrating motor (11) is located at the midpoint of the horizontal plate (10). The top of the screen (12) is inclined towards both sides.

7. The fine sand screening mechanism for construction sites according to claim 1, characterized in that: The two sand discharge wide cylinders (13) are connected to the inner frame (9) in a through manner. The two sand discharge wide cylinders (13) are both located at one end near the screen (12). The receiving drawer (15) is located at the bottom of the chassis housing (1).

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