Sand screening machine for constructional engineering

Abstract

The utility model discloses a sand screening machine for constructional engineering, which comprises a blanking box assembly, a sand screening frame assembly, a first transmission mechanism and a power mechanism, the first transmission mechanism enables the sand screening frame assembly to move back and forth in a reciprocating manner, and the sand screening frame assembly is arranged below the blanking box assembly. The front side of the sand screening frame assembly makes contact with the output end of the first transmission mechanism, and when the power mechanism drives the first transmission mechanism to conduct transmission, the power mechanism drives the sand screening frame assembly to reciprocate front and back, so that sand entering the sand screening frame assembly from the discharging box assembly shakes front and back in a reciprocating mode. The sand screening machine for constructional engineering is ingenious in structural design, convenient to operate and capable of effectively avoiding the problem that the screen is blocked by gravel in the sand screening process.

Description

Technical Field

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

[0002] Sand screening is an essential part of construction engineering. Sand screening is essential during the concrete production process. This process removes debris like rocks from the sand, ensuring the subsequent concrete mixing process is carried out smoothly and preventing debris like rocks from damaging the concrete mixing equipment and affecting the quality of the concrete.

[0003] However, the current sand screening machine still has the problem of being complicated to operate and a small amount of sand and gravel clogging the screen during the sand screening process of the device, thereby causing a certain impact on the sand screening process of the device.

[0004] In view of this, how to design a construction engineering sand screening machine that can solve the above-mentioned technical problems is a topic that the inventor has devoted himself to studying. Utility Model Content

[0005] The purpose of the utility model is to provide a sand screening machine for construction engineering, which has an ingenious structural design and is easy to operate, and can effectively avoid the problem of sand and gravel clogging the screen during the sand screening process.

[0006] In order to achieve the above-mentioned purpose, the technical solution of the utility model is: a sand screening machine for construction projects, which includes a discharge box assembly, a sand screening frame assembly, a first transmission mechanism and a power mechanism that make the sand screening frame assembly move back and forth. The sand screening frame assembly is arranged below the discharge box assembly, and the front side of the sand screening frame assembly is in contact with the output end of the first transmission mechanism. When the power mechanism drives the first transmission mechanism to transmit, it drives the sand screening frame assembly to move back and forth, so that the sand entering the sand screening frame assembly from the discharge box assembly shakes back and forth.

[0007] The utility model discloses a sand screening machine for construction engineering, wherein the discharge box assembly comprises a discharge box and two first support frames located on the left and right sides of the discharge box, and the discharge box is fixed to the upper ends of the two first support frames.

[0008] The utility model discloses a sand screening machine for construction projects, wherein the sand screening frame assembly comprises a sand screening frame, a screen installed on the bottom surface of the sand screening frame, and a connecting frame installed on the front side of the sand screening frame; the sand screening frame is located directly below the discharge port of the discharge box, and the front side surface of the connecting frame contacts the output end of the transmission mechanism.

[0009] The utility model discloses a sand screening machine for construction projects, wherein the connecting frame comprises a connecting frame body connected to the front side of the sand screening frame, and the left and right parts of the front side of the connecting frame body are connected to two inverted T-shaped first push plates, and the two first push plates are against the output end of the first transmission mechanism.

[0010] The utility model provides a sand screening machine for construction projects, which also includes a first limiting assembly. The first limiting assembly includes two second support frames arranged on the left and right sides of the sand screening frame and two sliders connected to the left and right sides of the sand screening frame. The upper part of the second support frame is a horizontal first support shaft. The two first support shafts slide through the two sliders. Two elastic elements are installed on the first support shaft between the slider and the two ends of the first support shaft.

[0011] The utility model provides a sand screening machine for construction projects, wherein the power mechanism includes a motor installed on the discharge box, the output shaft of the motor extends into the inner cavity of the discharge box and is connected to a connecting shaft, and the other end of the connecting shaft extends out of the discharge box and is connected to the input end of the first transmission mechanism.

[0012] The utility model discloses a sand screening machine for construction engineering, wherein a plurality of stirring rods are arranged on the connecting shaft.

[0013] The utility model provides a sand screening machine for construction projects, wherein the first transmission mechanism includes a first sprocket, a second sprocket and a chain installed on the first sprocket and the second sprocket, the first sprocket is installed on the connecting shaft, the second sprocket is installed on the third support frame, the third support frame is arranged on the front side of the sand screening frame assembly, the upper part of the third support frame is a horizontal second support shaft, the second sprocket is installed on the second support shaft, two cams are connected to the second support shaft, and the front side surface of the first push plate rests on the two cams.

[0014] The utility model provides a sand screening machine for construction projects, wherein the second support shaft is also connected to a second transmission mechanism, the output end of the second transmission mechanism is connected to a push plate assembly, the output end of the push plate assembly is connected to a scraper assembly, the scraper assembly is slidably arranged on the upper surface of the screen, and the scraper assembly can move back and forth left and right along the upper surface of the screen under the drive of the push plate assembly to clean the sand on the screen.

[0015] The utility model provides a sand screening machine for construction projects, wherein the second transmission mechanism includes a first bevel gear connected to the second support shaft, the first bevel gear is meshed with the second bevel gear, the second bevel gear is connected to a rotating sleeve, the rotating sleeve is rotatably mounted on the support plate, the rotating sleeve is non-rotatably plugged into one end of a rotating rod, and the other end of the rotating rod is connected to the push plate assembly.

[0016] The utility model discloses a sand screening machine for construction projects, wherein the push plate assembly includes a turntable and a second push plate, the other end of the rotating rod passes through the connecting frame body and is fixedly connected to the center of the turntable, a shift rod is provided on the turntable on a side adjacent to the second push plate and close to the outer edge, an open groove is provided on the second push plate on a side adjacent to the turntable, the shift rod movably extends into the open groove, and when the second transmission mechanism drives the turntable to rotate, the shift rod drives the second push plate to rotate forward and reverse, thereby driving the scraper assembly to move left and right.

[0017] The utility model provides a sand screening machine for construction projects, wherein the push plate assembly also includes a second limiting assembly, the second limiting assembly includes a first fixing rod rotatably installed between the left and right ends of the connecting frame body, and the first fixing rod passes through the second push plate in the left and right directions.

[0018] The utility model provides a sand screening machine for construction engineering, wherein the scraper assembly includes a fixed plate connected to the second push plate, the fixed plate is connected to the cleaning plate through at least one second fixed rod, and the cleaning plate is horizontally slidably arranged on the upper surface of the screen.

[0019] The utility model discloses a sand screening machine for construction projects, wherein the sand screening frame is composed of a frame body with an open rear end and a door panel assembly that is detachably connected. The door panel assembly includes a door panel plugged into the rear end of the frame body, the lower end of the door panel is against the screen, and the left and right parts of the rear end of the door panel are respectively connected to support columns.

[0020] After adopting the above scheme, the utility model provides a sand screening machine for construction projects, which drives the connecting shaft located in the discharge box and the multiple stirring rods thereon to rotate through the power mechanism, that is, the motor, to realize the stirring and crushing function of the sand inside the discharge box, thereby avoiding the phenomenon of sand clumping and compaction; at the same time, when the connecting shaft rotates, it will drive the first sprocket and the second sprocket of the first transmission mechanism to rotate, and then drive the two cams on the second support shaft to rotate. The rotation of the two cams can push the T-shaped push plate of the sand screening frame assembly to reciprocate basically in the front and rear directions, and then drive the entire sand screening frame to reciprocate basically in the front and rear directions, and under the action of the first limit assembly, it can ensure reciprocating shaking in the front and rear directions, so that the sand falling into the sand screening frame from the discharge box can be screened. During the process of screening sand, the first bevel gear on the second support shaft rotates, which can drive the second transmission mechanism to transmit. Specifically, the first bevel gear drives the second bevel gear and the rotating sleeve to rotate, and the rotating sleeve drives the rotating rod that is plugged in and cannot rotate with it to rotate, and drives the turntable of the push plate assembly to rotate. The lever on the turntable drives the push plate of the push plate assembly to rotate forward and reverse, thereby driving the scraper assembly to move left and right, so that the cleaning plate of the scraper assembly can reciprocate left and right inside the sand screening frame, thereby avoiding blockage of the screen of the sand screening frame during use. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 This is a front perspective structural diagram of an embodiment of a sand screening machine for construction engineering of the present utility model;

[0022] Figure 2 This is a front perspective sectional structural diagram of an embodiment of a sand screening machine for construction engineering of the present utility model;

[0023] Figure 3 This is a rear perspective structural diagram of an embodiment of a sand screening machine for construction engineering of the present utility model;

[0024] Figure 4 This is a schematic diagram of the three-dimensional structure of the second transmission mechanism of an embodiment of a sand screening machine for construction engineering of the utility model;

[0025] Figure 5 This is a schematic diagram of the three-dimensional connection structure of the push plate assembly and the scraper assembly of an embodiment of a sand screening machine for construction engineering of the utility model;

[0026] Figure 6 The utility model is a schematic diagram of the three-dimensional connection structure of a sand screening frame assembly, a push plate assembly and a scraper assembly in an embodiment of a sand screening machine for construction engineering.

[0027] Number Description:

[0028] 1- Base 2- Unloading box

[0029] 3-First support frame 4-Sand screening frame

[0030] 5-Screen 6-Connecting frame

[0031] 7-Frame body 8-Door panel

[0032] 9-Support column 10-Ear plate

[0033] 11- pad 12- spring

[0034] 13-Connecting frame body 14-First push plate

[0035] 15-Second support frame 16-Slider

[0036] 17-First support plate 18-First support shaft

[0037] 19- Spring 20- Motor

[0038] 21-Connecting shaft 22-Stirring rod

[0039] 23-first sprocket 24-second sprocket

[0040] 25-chain 26-third support frame

[0041] 27- Second support plate 28- Second support shaft

[0042] 29-Cam 30-First bevel gear

[0043] 31-second bevel gear 32-rotating sleeve

[0044] 33-third support plate 34-rotating rod

[0045] 35-turntable 36-second push plate

[0046] 37- lever 38- opening slot

[0047] 39-first fixing rod 40-fixing plate

[0048] 41-Second fixing rod 42-Cleaning plate

[0049] 43-guide block 44-discharge port DETAILED DESCRIPTION

[0050] The following describes the present invention based on the embodiments shown in the accompanying drawings. The embodiments disclosed herein are to be considered in all respects to be illustrative and non-restrictive. The scope of the present invention is not limited by the following description of the embodiments but is solely defined by the scope of the claims, which include all variations within the meaning and scope of the claims.

[0051] The structure of a sand screening machine for construction engineering of the present invention is described below in conjunction with specific embodiments.

[0052] like Figures 1 to 3 As shown, the present invention provides a sand screening machine for construction projects, comprising a feed box assembly, a sand screening frame assembly, a first transmission mechanism and a power mechanism for reciprocating the sand screening frame assembly, a second transmission mechanism, a push plate assembly, and a scraper assembly. The sand screening frame assembly is disposed below the feed box assembly, and the lower end of the sand screening frame assembly is fixed to a rectangular base 1.

[0053] The material box assembly includes a material box 2 and two first support frames 3 fixed to the left and right sides of the material box 2. In this embodiment, the two first support frames 3 are two inverted L-shaped plates that are symmetrical on both sides. The material box 2 is fixed to the upper ends of the two first support frames 3, and the two first support frames 3 support the material box 2. Figure 3 As shown, the bottom of the discharge box 2 has a discharge port 44. The lower ends of the two first support frames 3 are fixed on the base 1.

[0054] The sand screening frame assembly includes a rectangular sand screening frame 4, a screen 5 installed on the bottom surface of the sand screening frame 4, a connecting frame 6 fixedly connected to the front side of the sand screening frame 4, and a first limit assembly. The sand screening frame 4 is located just below the discharge port of the discharge box 2.

[0055] Combine Figure 6 As shown, the sand screening frame 4 consists of a frame body 7 with an open rear end and a door panel assembly that is detachably connected. The door panel assembly includes a door panel 8 that is plugged downwardly into the open rear end of the frame body 7. The lower end of the door panel 8 rests on the screen 5, and the left and right parts of the rear surface of the door panel 8 are respectively connected with inverted L-shaped support columns 9. Two ear plates 10 are provided on the left and right parts of the rear lower end of the frame body 7, and the lower ends of the two support columns 9 pass through the two ear plates 10. Pads 11 are provided at the lower ends of the two support columns 9, and the two pads 11 are supported on the base 1. An elastic element is installed on the support column 9 between the ear plate 10 and the pad 11. In this embodiment, a spring 12 is used. A lifting portion protruding backward is provided at the middle part of the upper end of the rear surface of the door panel 8, which is used to lift the door panel 8 upward.

[0056] The connecting frame 6 includes a connecting frame body 13 connected to the front side of the frame body 7. In this embodiment, the connecting frame body 13 is a U-shaped plate, and its open ends are connected to the left and right portions of the front side of the frame body 7. Two inverted T-shaped first push plates 14 are fixedly connected to the left and right portions of the front side of the connecting frame body 13. The two first push plates 14 abut the output end of the first transmission mechanism.

[0057] The first limiting assembly includes two second support frames 15 spaced apart on the left and right sides of the frame body 7 and two sliders 16 fixedly connected to the left and right sides of the frame body 7. The second support frame 15 is composed of two vertically arranged first support plates 17 and a horizontal first support shaft 18 connected between the upper ends of the two first support plates 17. The lower ends of the two first support plates 17 are fixed to the base 1. The two first support shafts 18 slide through the two sliders 16. Two elastic elements are installed on the first support shafts 18 between the sliders 16 and the ends of the first support shafts 18. In this embodiment, springs 19 are used.

[0058] The power mechanism includes a motor 20 mounted on the right side of the feed box 2. The output shaft of the motor 20 extends into the inner cavity of the feed box 2 and is connected to a connecting shaft 21. The outer surface of the connecting shaft 21 is uniformly distributed with multiple stirring rods 22. The other end of the connecting shaft 21 extends out of the left side of the feed box 2 and is connected to the input end of the first transmission mechanism.

[0059] The first transmission mechanism includes a first sprocket 23, a second sprocket 24 and a chain 25 mounted on the first sprocket 23 and the second sprocket 24. The first sprocket 23 is mounted on the left end of the connecting shaft 21, and the second sprocket 24 is mounted on the third support frame 26. The third support frame 26 is set on the front side of the sand screening frame assembly. Figure 4 As shown, the third support frame 26 is composed of two vertically arranged second support plates 27 and a horizontal second support shaft 28 connected between the upper ends of the two second support plates 27. The lower ends of the two second support plates 27 are fixed to the base 1. The second sprocket 24 is mounted on the second support shaft 28. The left and right portions of the second support shaft 28 are connected to two cams 29, and the front sides of the two inverted T-shaped push plates 14 abut against the two cams 29.

[0060] A second transmission mechanism is connected to the second support shaft 28. The second transmission mechanism includes a first bevel gear 30 connected to the second support shaft 28. The first bevel gear 30 meshes with a second bevel gear 31. The second bevel gear 31 is connected to a rotating sleeve 32, which is perpendicular to the second support shaft 28. The rotating sleeve 32 is rotatably mounted on a third support plate 33 and supported on the base 1 by the third support plate 33. The rotating sleeve 32 is non-rotatably plugged into the front end of the rotating rod 34. Specifically, the inner cavity of the rotating sleeve 32 consists of a circular hole and two vertically symmetrical, approximately rectangular guide grooves located above and below the circular hole. The width of the guide grooves is smaller than the diameter of the circular hole. Two guide blocks 43 are provided on the upper and lower surfaces of the rotating rod 34. The two guide blocks 43 correspond in shape to the two rectangular guide grooves of the rotating sleeve 32, and the two guide blocks 43 are plugged into each other. The rotating rod 34 corresponds in shape to the circular hole of the rotating sleeve 32, and the two guide blocks 43 are plugged into each other. The rear end of the rotating rod 34 is connected to the push plate assembly.

[0061] Combine Figure 5 and Figure 6 As shown, the push plate assembly includes a turntable 35, a second push plate 36 and a second limiting assembly. The rear end of the rotating rod 34 passes through the connecting frame body 13 and is fixedly connected to the center of the turntable 35. In this embodiment, the turntable 35 is a circular disc. The turntable 35 and the second push plate 36 are arranged in a front-to-back spacing. The second push plate 36 is a plate with a T-shaped cross-section. A shift rod 37 is vertically provided on the rear surface of the turntable 35 near the outer edge, and a rectangular opening groove 38 is provided on the front surface of the second push plate 36. The height of the opening groove 38 is greater than its width. The shift rod 37 can be movably extended into the opening groove 38. The second limiting assembly includes two first fixed rods 39 that are rotatably arranged at intervals from top to bottom and pass through the rear left and right sides of the connecting frame body 13, and the two first fixed rods 39 vertically pass through the left and right side surfaces of the rear of the second push plate 36.

[0062] The rear surface of the second push plate 36 is connected to the scraper assembly. The scraper assembly includes a fixed plate 40 fixedly connected to the rear surface of the second push plate 36, and the fixed plate 40 is connected to a cleaning plate 42 through two second fixing rods 41. The cleaning plate 42 is horizontally slidable on the upper surface of the screen 5.

[0063] When using the sand screening machine for construction projects of the present invention to screen sand, the motor 20 is started, and the output shaft of the motor 20 drives the connecting shaft 21 to rotate, and the connecting shaft 21 drives the several stirring rods 22 arranged thereon to stir and crush the sand inside the discharge box 2 to prevent the sand from clumping and hardening. The crushed sand falls into the interior of the sand screening frame 4 through the discharge port 44 of the discharge box 2. In this process, the rotation of the connecting shaft 21 drives the first sprocket 23, the chain 25 and the second sprocket 24 to rotate, and the second sprocket 24 drives the second support shaft 28 to rotate, and the second support shaft 28 drives the first bevel gear 30 and the cam 29 to rotate, and the two cams 29 drive the two first push plates 14 to rotate, and the two first push plates 14 drive the connecting frame 6 and the sand screening frame 4 to move back and forth, thereby realizing the screening process of the sand falling from the inside of the discharge box 2. During the sand screening process, the rotation of the first bevel gear 30 drives the second bevel gear 31, which in turn drives the rotating sleeve 32 and the rotating rod 34 to rotate together. The rotation of the rotating rod 34 drives the rotating disk 35, which in turn drives the T-shaped second push plate 36 to move left and right along the first fixed rod 39 via the shifting rod 37. The second push plate 36 drives the fixed plate 40 to move left and right. The fixed plate 40 drives the cleaning plate 42 to reciprocate left and right inside the sand screening frame 4 via the two connected second fixed rods 41 to clean the sand on the screen 5, thereby preventing the sand screening frame 4 from being blocked during use.

[0064] The above-described embodiments are merely descriptions of preferred implementation methods of the present invention and are not intended to limit the scope of the present invention. Without departing from the design spirit of the present invention, various modifications and improvements made to the technical solutions of the present invention by ordinary engineering technicians in this field should fall within the scope of protection determined by the claims of the present invention.

Claims

1. A sand screening machine for construction engineering, characterized in that: It includes a discharge box assembly, a sand screening frame assembly, a first transmission mechanism and a power mechanism that enables the sand screening frame assembly to move back and forth. The sand screening frame assembly is arranged below the discharge box assembly, and the front side of the sand screening frame assembly is in contact with the output end of the first transmission mechanism. When the power mechanism drives the first transmission mechanism to transmit, it drives the sand screening frame assembly to move back and forth, causing the sand entering the sand screening frame assembly from the discharge box assembly to shake back and forth.

2. A sand screening machine for construction engineering according to claim 1, characterized in that: The material drop box assembly includes a material drop box and two first support frames located on the left and right sides of the material drop box, and the material drop box is fixed to the upper ends of the two first support frames.

3. A sand screening machine for construction engineering according to claim 2, characterized in that: The sand screening frame assembly includes a sand screening frame, a screen installed on the bottom surface of the sand screening frame, and a connecting frame installed on the front side of the sand screening frame. The sand screening frame is located directly below the discharge port of the discharge box, and the front side surface of the connecting frame contacts the output end of the transmission mechanism.

4. A sand screening machine for construction engineering according to claim 3, characterized in that: The connecting frame includes a connecting frame body connected to the front side of the sand screening frame, and two inverted T-shaped first push plates are connected to the left and right parts of the front side of the connecting frame body, and the two first push plates are against the output end of the first transmission mechanism.

5. A sand screening machine for construction engineering according to claim 3, characterized in that: It also includes a first limiting assembly, which includes two second support frames arranged on the left and right sides of the sand screening frame and two sliders connected to the left and right sides of the sand screening frame. The upper part of the second support frame is a horizontal first support shaft, and the two first support shafts slide through the two sliders. Two elastic elements are installed on the first support shaft between the slider and the two ends of the first support shaft.

6. A sand screening machine for construction engineering according to claim 2, characterized in that: The power mechanism includes a motor installed on the discharge box, the output shaft of the motor extends into the inner cavity of the discharge box and is connected to the connecting shaft, and the other end of the connecting shaft extends out of the discharge box and is connected to the input end of the first transmission mechanism.

7. A sand screening machine for construction engineering according to claim 6, characterized in that: A plurality of stirring rods are arranged on the connecting shaft.

8. A sand screening machine for construction engineering according to claim 4, characterized in that: The first transmission mechanism includes a first sprocket, a second sprocket and a chain installed on the first sprocket and the second sprocket. The first sprocket is installed on the connecting shaft, the second sprocket is installed on the third support frame, and the third support frame is arranged on the front side of the sand screening frame assembly. The upper part of the third support frame is a horizontal second support shaft, the second sprocket is installed on the second support shaft, and two cams are connected to the second support shaft. The front side of the first push plate rests on the two cams.

9. A sand screening machine for construction engineering according to claim 8, characterized in that: A second transmission mechanism is also connected to the second support shaft, and the output end of the second transmission mechanism is connected to the push plate assembly, and the output end of the push plate assembly is connected to the scraper assembly. The scraper assembly is slidably arranged on the upper surface of the screen. Driven by the push plate assembly, the scraper assembly can move back and forth left and right along the upper surface of the screen to clean the sand on the screen.

10. A sand screening machine for construction engineering according to claim 9, characterized in that: The second transmission mechanism includes a first bevel gear connected to the second support shaft, the first bevel gear is meshed with the second bevel gear, the second bevel gear is connected to a rotating sleeve, the rotating sleeve is rotatably mounted on the support plate, the rotating sleeve is non-rotatably plugged into one end of the rotating rod, and the other end of the rotating rod is connected to the push plate assembly.

11. A sand screening machine for construction engineering according to claim 10, characterized in that: The push plate assembly includes a turntable and a second push plate, the other end of the rotating rod passes through the connecting frame body and is fixedly connected to the center of the turntable, a shift rod is provided on the turntable near the outer edge on the side adjacent to the second push plate, and an open groove is provided on the side of the second push plate adjacent to the turntable, the shift rod movably extends into the open groove, and when the second transmission mechanism drives the turntable to rotate, the shift rod drives the second push plate to reverse forward and reverse, thereby driving the scraper assembly to move left and right.

12. A sand screening machine for construction engineering according to claim 11, characterized in that: The push plate assembly further includes a second limiting assembly, which includes a first fixing rod rotatably installed between the left and right ends of the connecting frame body, and the first fixing rod passes through the second push plate in the left and right directions.

13. A sand screening machine for construction engineering according to claim 11, characterized in that: The scraper assembly includes a fixed plate connected to the second push plate, the fixed plate is connected to the cleaning plate through at least one second fixing rod, and the cleaning plate is horizontally slidably arranged on the upper surface of the screen.

14. A sand screening machine for construction engineering according to claim 11, characterized in that: The sand screening frame consists of a frame body with an open rear end and a detachably connected door panel assembly. The door panel assembly includes a door panel plugged into the rear end of the frame body, the lower end of the door panel rests on the screen, and the left and right parts of the rear end of the door panel are respectively connected to support columns.

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