Sand screening device for building construction

Abstract

The sand screening device for building construction comprises a machine frame, a screening mechanism, a discharging hopper and a first hinge, the screening mechanism comprises an adjusting frame, a sand screening frame, a material guiding plate and a supporting plate, a bottom frame is installed at the bottom of the sand screening frame, and a screen is fixedly installed between the bottom frame and the bottom of the sand screening frame. A hinged shaft is fixedly installed outside the side, close to the guide plate, of the bottom frame, and a swing mechanism is fixedly installed at the top of the end, away from the guide plate, of the adjusting frame. The initial angle of the screen can be adjusted, follow-up sand screening operation is facilitated, coarse sand can fall off conveniently, follow-up cleaning of the screen is also facilitated, the size of a discharging opening in the bottom of the discharging hopper can be adjusted, the discharging speed can be adjusted conveniently according to actual conditions in the using process, and the practicability is high. And meanwhile, vertical vibration adjustment of the sand screening frame can be achieved by continuously rotating the rotating wheels, subsequent sand can conveniently pass through the screen, the screen can be integrally overturned, and the bottom of the screen can be conveniently cleaned.

Description

Technical Field

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

[0002] Construction projects refer to the engineering entities formed by the construction of various types of buildings and their ancillary facilities and the installation of supporting lines, pipelines, and equipment. "Buildings" refer to projects with roofs, beams, columns, walls, foundations, and internal spaces that can meet people's needs for production, residence, study, and public activities.

[0003] The construction process of construction projects cannot be separated from the use of various raw materials, among which sand is an indispensable raw material. After the sand is transported to the construction site, in order to improve the quality of the building, the sand is generally screened. Traditional sand screening generally relies on simple workers using shovels to pass the sand through the screen. This is convenient for operation and the amount of screened sand can be selected according to actual use. However, the screened sand can often only be spread directly on the ground and needs to be collected separately, and the coarse sand after screening can also only be collected separately. At the same time, long-term use of the shovel to lift and lower can easily make the arms sore, which is not easy to perform long-term sand screening operations.

[0004] Currently, no effective solution has been proposed for the problems in the related technologies. Utility Model Content

[0005] The purpose of the utility model is to provide a sand screening device for construction to solve the problems raised in the above background technology.

[0006] In order to achieve the above purpose, the utility model provides the following technical solutions:

[0007] A sand screening device for construction, comprising a frame, a screening mechanism is installed on the top of the frame, a drop hopper is fixedly installed inside the frame and is arranged directly below the screening mechanism, a first hinge is installed on the top of the frame along one side of its length direction, the screening mechanism comprises an adjustment frame, a bottom end of the adjustment frame is installed on the frame through a first hinge, a first adjustment plate is fixedly installed on the side of the bottom of the adjustment frame away from the first hinge, a first positioning nail is fixedly installed on the side of the frame away from the first hinge, a first adjustment hole is opened on the first adjustment plate and is arranged around the central axis of the first hinge, the screening mechanism also comprises an installation The sand screening frame is at the top of the adjusting frame, a material guide plate is fixedly installed on the bottom of one end of the adjusting frame close to the first hinge, a support plate is fixedly installed on the top of the side of the adjusting frame away from the first adjusting plate, a bottom frame is installed on the bottom of the sand screening frame, a screen is fixedly installed between the bottom frame and the bottom of the sand screening frame, a hinge shaft is fixedly installed on the outside of one side of the bottom frame close to the material guide plate, and the end of the hinge shaft away from the sand screening frame is rotatably installed on the support plate, a swing mechanism is fixedly installed on the top of one end of the adjusting frame away from the material guide plate, the swing mechanism is connected to the sand screening frame toward one end, and a discharge port is opened at the bottom of one end of the sand screening frame facing the material guide plate.

[0008] Furthermore, a lower hopper is installed at one end of the top of the sand screening frame away from the material guide plate, and a cover plate is also fixedly installed on the top of the sand screening frame. The cover plate is provided with a feed inlet located below the lower hopper, and an observation port is also provided in the middle of the cover plate.

[0009] Furthermore, a binding strap is provided on the outside of the cover plate, and the binding strap is arranged around the sand screening frame and the bottom frame.

[0010] Furthermore, a second hinge is installed at one end of the top of the cover plate away from the material guide plate, and one side of the bottom of the lower hopper is installed on the cover plate through the second hinge. A second adjustment plate is fixedly installed on both sides of the top of the cover plate on the feed port, and a second adjustment hole is opened on the second adjustment plate around the center of the second hinge. A second positioning pin is fixedly installed on the outer wall of the lower hopper.

[0011] Furthermore, a discharge port is provided at the bottom of the lower hopper, a partition is installed on the outer wall of the bottom of the lower hopper, an adjustment frame is fixedly installed on the outer wall of the lower hopper, a strip hole is provided on the adjustment frame, and both end portions of the partition are slidably arranged in the strip holes.

[0012] Furthermore, the swing mechanism includes a fixed rod, a U-shaped frame is fixedly installed in the middle of the fixed rod, and a swing plate symmetrically arranged along the center is also installed in the middle of the fixed rod, the swing plate is arranged inside the U-shaped frame, the middle part of the swing plate is rotatably connected to the fixed rod, the end of the swing plate away from the U-shaped frame is rotatably installed with a top wheel, the end of the swing plate close to the U-shaped frame is installed with a connecting shaft, the outer sleeve of the connecting shaft is provided with a shaft sleeve, a push rod is fixedly installed on the outer wall of the shaft sleeve, a support frame is fixedly installed on the top of the end of the frame away from the first hinge, a fixed sleeve is fixedly installed on the top end of the support frame, and the end of the fixed rod is fixedly installed in the fixed sleeve.

[0013] Furthermore, a corner plate is fixedly installed on the outer wall of one end of the sand screening frame close to the second hinge, a top plate is fixedly installed on the bottom of the corner plate, a top groove is opened on the side of the top plate away from the corner plate, the top of the top wheel is arranged in the top groove, and a handle is fixedly installed on the top of the corner plate.

[0014] Furthermore, an assembly sleeve is integrally provided at the middle part of one end of the U-shaped frame away from the fixed rod, a rotating shaft is rotatably installed in the assembly sleeve, a turntable is fixedly installed on one end of the rotating shaft facing the fixed rod, an assembly hole is opened on the turntable, one end of the push rod away from the sleeve passes through the assembly hole, and a rotating wheel is also installed on the end of the rotating shaft away from the turntable.

[0015] Compared with the prior art, the utility model has the following beneficial effects: the utility model has a simple structure and is easy to use. It can adjust the initial angle of the screen, which is convenient for subsequent sand screening operations, the falling of coarse sand, and the subsequent cleaning of the screen. The size of the discharge port at the bottom of the discharge hopper can be adjusted, which is convenient for adjusting the discharge speed according to actual conditions during use. At the same time, the up and down vibration adjustment of the sand screening frame can be achieved by continuously rotating the wheel, which is convenient for subsequent sand to pass through the screen. The screen can also be flipped as a whole to facilitate the cleaning operation of the bottom of the screen. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0017] Figure 1 It is a structural schematic diagram of a sand screening device for construction according to an embodiment of the utility model;

[0018] Figure 2 It is a structural schematic diagram of a frame in a sand screening device for construction according to an embodiment of the utility model;

[0019] Figure 3 It is a structural schematic diagram of a screening mechanism in a sand screening device for construction according to an embodiment of the utility model;

[0020] Figure 4 It is a structural schematic diagram of an adjustment frame in a sand screening device for construction according to an embodiment of the utility model;

[0021] Figure 5 It is a schematic diagram of the top structure of a sand screening frame in a sand screening device for construction according to an embodiment of the utility model;

[0022] Figure 6 It is a schematic diagram of the bottom structure of a sand screening frame in a sand screening device for construction according to an embodiment of the utility model;

[0023] Figure 7 It is a structural schematic diagram of a lower hopper in a sand screening device for construction according to an embodiment of the utility model;

[0024] Figure 8 The utility model is a structural schematic diagram of a swing mechanism in a sand screening device for construction according to an embodiment of the utility model.

[0025] Reference numerals:

[0026] 1. Frame; 2. Screening mechanism; 3. Drop hopper; 4. First hinge; 5. Adjustment frame; 6. Support plate; 7. Sand screening frame; 8. Guide plate; 9. Swing mechanism; 10. First adjustment plate; 11. Drop hopper; 12. First adjustment hole; 13. First positioning pin; 14. Bottom frame; 15. Screen; 16. Cover plate; 17. Articulated shaft; 18. Strap; 19. Second adjustment plate; 20. Second adjustment hole; 21. Feed inlet; 22. Observation port; 23. First Two hinges; 24, angle plate; 25, top plate; 251, top groove; 26, handle; 27, feed port; 28, partition; 29, adjustment frame; 30, strip hole; 31, support frame; 32, fixing sleeve; 33, second positioning pin; 34, fixing rod; 35, U-shaped frame; 36, swing plate; 37, top wheel; 38, connecting shaft; 39, shaft sleeve; 40, push rod; 41, assembly set; 42, rotating shaft; 43, turntable; 44, assembly hole; 45, rotating wheel. DETAILED DESCRIPTION

[0027] Below, in conjunction with the accompanying drawings and specific implementation methods, the utility model is further described:

[0028] See also Figure 1-8According to an embodiment of the utility model, a sand screening device for construction includes a frame 1, a screening mechanism 2 is installed on the top of the frame 1, and a drop hopper 3 is fixedly installed inside the frame 1 and is arranged directly below the screening mechanism 2. In order to enable the screening mechanism 2 to better screen the sand, a first hinge 4 is installed on one side of the top of the frame 1 along its length direction. The screening mechanism 2 includes an adjusting frame 5, and one end of the bottom of the adjusting frame 5 is installed on the frame 1 through the first hinge 4. A first adjusting plate 10 is fixedly installed on the side of the bottom of the adjusting frame 5 away from the first hinge 4, and a first positioning nail 13 is fixedly installed on the side of the frame 1 away from the first hinge 4. The first adjusting plate 10 is provided with a first adjusting hole 12 arranged around the central axis of the first hinge 4. By changing the fixed position between the first positioning nail 13 and the first adjusting hole 12, the inclination angle between the adjusting frame 5 and the frame 1 can be changed, so that the screening mechanism 2 can better screen sand.

[0029] In order to enable the screening mechanism 2 to further improve the sand screening effect, in this embodiment, the screening mechanism 2 also includes a sand screening frame 7 installed on the top of the adjusting frame 5, a guide plate 8 is fixedly installed on the bottom of one end of the adjusting frame 5 close to the first hinge 4, a support plate 6 is fixedly installed on the top of the side of the adjusting frame 5 away from the first adjusting plate 10, a bottom frame 14 is installed at the bottom of the sand screening frame 7, a screen 15 is fixedly installed between the bottom frame 14 and the bottom of the sand screening frame 7, a hinge shaft 17 is fixedly installed on the outside of the side of the bottom frame 14 close to the guide plate 8, and the end of the hinge shaft 17 away from the sand screening frame 7 is rotatably installed on the support plate 6, a swinging mechanism 9 is fixedly installed on the top of one end of the adjusting frame 5 away from the guide plate 8, and the swinging mechanism 9 is connected to the sand screening frame 7 toward one end of the sand screening frame 7, and a discharge port (not shown) is opened at the bottom of one end of the sand screening frame 7 facing the guide plate 8. The sand screening frame 7 can be adjusted up and down to a certain extent on the top of the support plate 6 through the hinge shaft 17, and the swing mechanism 9 can adjust the end of the sand screening frame 7 away from the hinge shaft 17, so that the sand screening frame 7 can swing around the hinge shaft 17 continuously, and the sand inside the sand screening frame 7 can be better shaken and screened, and the screened fine sand can fall into the hopper 3 through the screen 15 and finally be collected, while the coarse sand can fall onto the guide plate 8 through the discharge port and finally be discharged.

[0030] In order to ensure that the sand to be screened can be well fed into the sand screening frame 7, in this embodiment, a lower hopper 11 is installed at one end of the top of the sand screening frame 7 away from the guide plate 8, and a cover plate 16 is fixedly installed on the top of the sand screening frame 7. The cover plate 16 is provided with a feed port 21 located below the lower hopper 11, and an observation port 22 is also provided in the middle of the cover plate 16. The sand dropped from the lower hopper 11 can enter the sand screening frame 7 through the feed port 21, and the sand screening situation can be conveniently observed through the observation port 22, which can also be used as a manually assisted channel to increase the sand screening speed.

[0031] In order to ensure that the cover plate 16 is sufficiently stable, in the present embodiment, a binding belt 18 is further provided on the outside of the cover plate 16 , and the binding belt 18 is arranged around the sand screening frame 7 and the bottom frame 14 .

[0032] In order to enable the lower hopper 11 to be adjusted after the adjustment frame 5 is adjusted, in this embodiment, a second hinge 23 is installed at one end of the top of the cover plate 16 away from the guide plate 8, and one side of the bottom of the lower hopper 11 is installed on the cover plate 16 through the second hinge 23. The top of the cover plate 16 is fixedly installed with a second adjustment plate 19 on both sides of the feed port 21. The second adjustment plate 19 is provided with a second adjustment hole 20 arranged around the center of the second hinge 23, and a second positioning nail 33 is fixedly installed on the outer side wall of the lower hopper 11. By changing the different positions of the second positioning nail 33 on the second adjustment plate 19, the second positioning nail 33 is positioned with different second adjustment holes 20, so that the lower hopper 11 can be rotated around the second hinge 23, and the angle between the lower hopper 11 and the cover plate 16 can be changed.

[0033] In order to facilitate the sand from the lower hopper 11 to fall into the feed port 21, in this embodiment, a feed port 27 is provided at the bottom of the lower hopper 11, a partition 28 is installed on the outer wall of the bottom of the lower hopper 11, and an adjustment frame 29 is fixedly installed on the outer wall of the lower hopper 11. The adjustment frame 29 is provided with a strip hole 30, and the two ends of the partition 28 are slidably arranged in the strip hole 30. By adjusting the positions of the two ends of the partition 28 in the strip hole 30, the position of the partition 28 at the feed port 27 can be changed, so that the partition 28 can adjust the size of the material discharge speed of the lower hopper 11.

[0034] In order to enable the swing mechanism 9 to push and adjust the end of the sand screening frame 7 away from the guide plate 8 up and down, in this embodiment, the swing mechanism 9 includes a fixed rod 34, a U-shaped frame 35 is fixedly installed in the middle of the fixed rod 34, and a swing plate 36 symmetrically arranged along the center is also installed in the middle of the fixed rod 34, the swing plate 36 is arranged inside the U-shaped frame 35, and the middle part of the swing plate 36 is rotatably connected to the fixed rod 34, and a top wheel 37 is rotatably installed at the end of the swing plate 36 away from the U-shaped frame 35, and a connecting shaft 38 is installed at the end of the swing plate 36 close to the U-shaped frame 35, and a shaft sleeve 39 is provided on the outer sleeve of the connecting shaft 38, and a push rod 40 is fixedly installed on the outer wall of the shaft sleeve 39, and a support frame 31 is fixedly installed on the top of the end of the frame 1 away from the first hinge 4, and a fixed sleeve 32 is fixedly installed on the top end of the support frame 31, and the end of the fixed rod 34 is fixedly installed in the fixed sleeve 32. By applying force to the push rod 40, the push rod 40 drives the connecting shaft 38 to move up and down through the shaft sleeve 39, and the push rod 40 can drive the top wheel 37 to move up and down through the swing plate 36. When the top wheel 37 lifts the end of the sand screening frame 7 away from the hinge shaft 17, it can drive the end of the sand screening frame 7 away from the hinge shaft 17 to rise. When the top wheel 37 descends, the sand screening frame 7 will move downward due to the sand inside it and its own weight. When the top wheel 37 continuously reciprocates up and down, it can drive the sand screening frame 7 to continuously vibrate the sand on the screen 15, thereby achieving the sand screening effect. Moreover, because the lifted end is always close to the lower hopper 11, and the coarse sand will be discharged from the guide plate 8, such a sand screening effect can also facilitate the subsequent discharge of coarse sand, saving the work of cleaning the screen 15.

[0035] In order to enable the top wheel 37 to conveniently act on the sand screening frame 7, in the present embodiment, a corner plate 24 is fixedly installed on the outer wall of one end of the sand screening frame 7 close to the second hinge 23, and a top plate 25 is fixedly installed on the bottom of the corner plate 24. A top groove 251 is provided on the side of the top plate 25 away from the corner plate 24, and the top of the top wheel 37 is arranged in the top groove 251. In order to facilitate the subsequent manual lifting of the sand screening frame 7, a handle 26 is fixedly installed on the top of the corner plate 24. The handle 26 can be used to lift the entire sand screening frame 7 around the hinge shaft 17, thereby facilitating the cleaning of the bottom of the screen 15.

[0036] In order to facilitate the up and down reciprocating movement of the top wheel 37, in the present embodiment, a mounting sleeve 41 is integrally provided in the middle of the end of the U-shaped frame 35 away from the fixed rod 34, a rotating shaft 42 is rotatably installed in the mounting sleeve 41, a turntable 43 is fixedly installed on the end of the rotating shaft 42 facing the fixed rod 34, an mounting hole 44 is opened on the turntable 43, and the end of the push rod 40 away from the shaft sleeve 39 passes through the mounting hole 44, and a rotating wheel 45 is also installed on the end of the rotating shaft 42 away from the turntable 43. By manually rotating the rotating wheel 45, the rotating wheel 45 can drive the rotating disk 43 to rotate through the rotating shaft 42. When the rotating disk 43 rotates, it can drive the push rod 40 to move synchronously through the assembly hole 44. The push rod 40 is installed on the connecting shaft 38 through the shaft sleeve 39. Therefore, when the rotating disk 43 rotates, the shaft sleeve 39 can be driven to move on the connecting shaft 38 through the push rod 40, and at the same time, the connecting shaft 38 can be driven to move up and down through the shaft sleeve 39, and then the swing plate 36 is driven to swing around the fixed rod 34 through the connecting shaft 38, finally realizing the up and down reciprocating adjustment of the top wheel 37.

[0037] Through the above-mentioned scheme of the utility model, the utility model has a simple structure and is easy to use. The initial angle of the screen 15 can be adjusted, which is convenient for subsequent sand screening operations, the falling of coarse sand, and the subsequent cleaning of the screen 15. The size of the discharge port 27 at the bottom of the discharge hopper 11 can be adjusted, which is convenient for adjusting the discharge speed according to actual conditions during use. At the same time, the up and down vibration adjustment of the sand screening frame 7 can be achieved by continuously rotating the rotating wheel 45, which is convenient for subsequent sand to pass through the screen 15. The screen 15 can also be flipped as a whole, which is convenient for cleaning the bottom of the screen 15.

[0038] In the present utility model, unless otherwise clearly stipulated and limited, the terms such as "installation", "setting", "connection", "fixation" and "screw-on" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integrated connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. Unless otherwise clearly defined, ordinary technicians in this field can understand the specific meanings of the above terms in the utility model according to the specific circumstances.

[0039] 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.

[0040] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

[0041] 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 sand screening device for construction, comprising a frame (1), characterized in that: A screening mechanism (2) is installed on the top of the frame (1), a drop hopper (3) is fixedly installed inside the frame (1) and is arranged directly below the screening mechanism (2), a first hinge (4) is installed on one side of the top of the frame (1) along its length direction, the screening mechanism (2) comprises an adjustment frame (5), one end of the bottom of the adjustment frame (5) is installed on the frame (1) through the first hinge (4), a first adjustment plate (10) is fixedly installed on the side of the bottom of the adjustment frame (5) away from the first hinge (4), a first positioning nail (13) is fixedly installed on the side of the frame (1) away from the first hinge (4), a first adjustment hole (12) arranged around the central axis of the first hinge (4) is opened on the first adjustment plate (10), the screening mechanism (2) also comprises a sand screening frame (7) installed on the top of the adjustment frame (5), A guide plate (8) is fixedly mounted on the bottom of one end of the adjusting frame (5) close to the first hinge (4); a support plate (6) is fixedly mounted on the top of one side of the adjusting frame (5) away from the first adjusting plate (10); a bottom frame (14) is mounted on the bottom of the sand screening frame (7); a screen (15) is fixedly mounted between the bottom frame (14) and the bottom of the sand screening frame (7); a hinge shaft (17) is fixedly mounted on the outside of one side of the bottom frame (14) close to the guide plate (8); the hinge shaft (17) is rotatably mounted on the support plate (6) at one end away from the sand screening frame (7); a swing mechanism (9) is fixedly mounted on the top of one end of the adjusting frame (5) away from the guide plate (8); the swing mechanism (9) is connected to the sand screening frame (7) at one end facing the guide plate (8); and a discharge port is provided at the bottom of one end of the sand screening frame (7) facing the guide plate (8).

2. A sand screening device for construction according to claim 1, characterized in that: A lower hopper (11) is installed at one end of the top of the sand screening frame (7) away from the material guide plate (8), and a cover plate (16) is also fixedly installed on the top of the sand screening frame (7). The cover plate (16) is provided with a feed port (21) located below the lower hopper (11), and an observation port (22) is also provided in the middle of the cover plate (16).

3. A sand screening device for construction according to claim 2, characterized in that: The cover plate (16) is also provided with a binding belt (18) on the outside, and the binding belt (18) is arranged around the sand screening frame (7) and the bottom frame (14).

4. A sand screening device for construction according to claim 3, characterized in that: A second hinge (23) is installed at one end of the top of the cover plate (16) away from the material guide plate (8), and one side of the bottom of the lower hopper (11) is installed on the cover plate (16) through the second hinge (23). A second adjustment plate (19) is fixedly installed on both sides of the top of the cover plate (16) located at the feed port (21), and a second adjustment hole (20) is opened on the second adjustment plate (19) and is arranged around the center of the second hinge (23). A second positioning nail (33) is fixedly installed on the outer wall of the lower hopper (11).

5. A sand screening device for construction according to claim 4, characterized in that: The bottom of the lower hopper (11) is provided with a material discharge port (27), the outer wall of the bottom of the lower hopper (11) is provided with a partition (28), the outer wall of the lower hopper (11) is fixedly provided with an adjustment frame (29), the adjustment frame (29) is provided with a strip hole (30), and the two end portions of the partition (28) are slidably arranged in the strip hole (30).

6. A sand screening device for construction according to claim 5, characterized in that: The swing mechanism (9) comprises a fixed rod (34), a U-shaped frame (35) is fixedly mounted in the middle of the fixed rod (34), a swing plate (36) symmetrically arranged along the center is also mounted in the middle of the fixed rod (34), the swing plate (36) is arranged inside the U-shaped frame (35), the middle of the swing plate (36) is rotatably connected to the fixed rod (34), a top wheel (37) is rotatably mounted on one end of the swing plate (36) away from the U-shaped frame (35), and the swing plate (36) A connecting shaft (38) is installed at one end close to the U-shaped frame (35), and a shaft sleeve (39) is provided on the outer sleeve of the connecting shaft (38). A push rod (40) is fixedly installed on the outer wall of the shaft sleeve (39). A support frame (31) is fixedly installed on the top of the end of the frame (1) away from the first hinge (4), and a fixing sleeve (32) is fixedly installed on the top end of the support frame (31), and the end of the fixing rod (34) is fixedly installed in the fixing sleeve (32).

7. A sand screening device for construction according to claim 6, characterized in that: A corner plate (24) is fixedly mounted on the outer wall of one end of the sand screening frame (7) close to the second hinge (23); a top plate (25) is fixedly mounted on the bottom of the corner plate (24); a top groove (251) is formed on a side of the top plate (25) away from the corner plate (24); the top of the top wheel (37) is arranged in the top groove (251); and a handle (26) is fixedly mounted on the top of the corner plate (24).

8. A sand screening device for construction according to claim 7, characterized in that: An assembly sleeve (41) is integrally provided at the middle of one end of the U-shaped frame (35) away from the fixed rod (34); a rotating shaft (42) is rotatably installed in the assembly sleeve (41); a rotating disk (43) is fixedly installed on one end of the rotating shaft (42) facing the fixed rod (34); an assembly hole (44) is provided on the rotating disk (43); one end of the push rod (40) away from the shaft sleeve (39) passes through the assembly hole (44); and a rotating wheel (45) is also installed on the end of the rotating shaft (42) away from the rotating disk (43).

Images