Sand screening machine for earth-rock engineering

Abstract

The utility model relates to a sand screening machine for earthwork engineering, and belongs to the technical field of sand screening machines, the sand screening machine comprises a base, the top of the base is provided with a box body, the inner side of the box body is provided with a sand screening mechanism for screening sand, the top of the box body is fixedly communicated with a feeding rod, and the top of the base is provided with a lifting mechanism for adjusting the height of the box body; two partition plates are fixed to the top of the base, and a second discharging port and a first discharging port are formed in the left side and the right side of the box body correspondingly. According to the sand screening machine for the earth-rock engineering, continuous reciprocating vibration can be achieved through a screening plate on the sand screening mechanism during sand screening, sand and gravel are rapidly separated, the sand screening efficiency can be improved, meanwhile, the height of the box body can be adjusted through the lifting mechanism, and therefore height adjustment of the sand screening mechanism is achieved, and the sand screening machine can adapt to different use conditions; the optimal effect can be achieved under different working conditions, the sand screening efficiency can be further improved, and efficient sand screening is achieved through cooperation of the sand screening mechanism and the lifting mechanism.

Description

TECHNICAL FIELD

[0001] The utility model relates to sand screening machine technical field, concretely is a sand screening machine for earthwork. BACKGROUND

[0002] In earthwork, the sand screening machine can efficiently separate sand and soil, so that the construction personnel can conveniently select the material meeting the engineering requirement, thereby improving the construction efficiency. With the continuous advancement of building, traffic and other infrastructure construction, the demand for building materials such as sandstone is continuously increasing. As an important equipment for sandstone separation, the market demand for the sand screening machine is also increasing.

[0003] For example, the sand screening machine for earthwork disclosed in Chinese patent (publication number: CN214718341U) relates to the technical field of sand screening machines. It is composed of a chassis, support legs, a net frame, a net body, an electric push rod, a connecting plate, a sliding rod, a moving plate, a baffle, universal wheels, and a transmission mechanism. The top surface of the chassis is fixedly installed with support legs. The top end of the support legs is slidingly connected with the net frame. The inner side of the net frame is fixedly installed with the net body. The top surface of the chassis near the edge position is fixedly installed with an electric push rod. The output end of the electric push rod is fixedly installed with a connecting plate. The top surface of the chassis away from the electric push rod is fixedly installed with a sliding rod. The universal wheels can make the utility model convenient to move. At the same time, the baffle can protect the universal wheels during movement. Especially when there are large stones or obstacles on the road surface, the baffle can buffer, thereby avoiding the universal wheels from being damaged.

[0004] When the device is actually used, the sandstone to be filtered is placed on the top surface of the net body 4, and then the electric push rod is turned on. At this time, the electric push rod drives the connecting plate to move, and the connecting plate then drives the net frame to move. At this time, the net frame slides on the top surface of the support legs, and the net frame drives the net body to move. At this time, the sandstone can be screened during the movement of the net body. However, the device cannot adjust the use height. When facing different use scenarios, the adaptability may not be good, thereby affecting the sand screening efficiency. Therefore, a sand screening machine for earthwork is proposed to solve the above problems. UTILITY MODEL CONTENTS

[0005] In view of the deficiencies of the prior art, the utility model provides a sand screening machine for earthwork, which has the advantage of being able to freely adjust the height and solves the problem of poor adaptability to different situations.

[0006] To achieve the above object, the utility model provides the following technical scheme: A kind of sand screening machine for earthwork, including base, the top of the base is equipped with box, the inboard of the box is equipped with sand screening mechanism for sand screening, the top of the box is fixedly connected with feeding rod, the top of the base is equipped with lifting mechanism for adjusting the height of box, the top of the base is fixed with two partitions, the left and right sides of the box are respectively provided with second discharge port and first discharge port;

[0007] The lifting mechanism includes servo motor, driving rod, two driven rods, driving gear, two driven gears and lifting assembly, the top of the base is fixed with servo motor, the output shaft of the servo motor is fixed with driving rod, the outer surface of the driving rod is fixed with the axis of driving gear, the outer surface of two driven rods is fixed with the axis of driven gear, and the top of two driven rods is provided with lifting assembly.

[0008] By adopting the technical scheme, the sand screening efficiency is further improved by realizing free lifting through the lifting mechanism and realizing sand screening and vibration at the same time through the sand screening mechanism.

[0009] Further, the outer surface of the servo motor is fixed with a fixing frame, the servo motor is fixed with the top of the base through the fixing frame, the right side of the driving rod is rotatably connected with the partition through a bearing, and the two ends of the two driven rods are rotatably connected with the two partitions through bearings.

[0010] By adopting the technical scheme, the bearing can prevent the driving rod and the driven rod from affecting the base when rotating, realize dynamic and static separation, and provide sufficient support for the driving rod and the driven rod.

[0011] Further, the top of the base is provided with a clearance groove, and the clearance groove is matched with the driving gear and the driven gear.

[0012] By adopting the technical scheme, the clearance groove can assist the driving gear and the driven gear to rotate smoothly, and further improve the transmission distance of the driving gear and the driven gear, so as to improve the stability of the device as a whole.

[0013] Further, the lifting assembly includes four threaded connection blocks, four connecting rods and four moving blocks, the four threaded connection blocks are respectively threadedly connected with the two driven rods, the top of the four threaded connection blocks is hingedly connected with the connecting rod, and the end, away from the base, of the four connecting rods is hingedly connected with the moving block.

[0014] By adopting the technical scheme, the horizontal movement of the threaded connection block can be converted into the lifting of the connecting rod by hingedly connecting the connecting rod with the threaded connection block.

[0015] Further, the bottom of the box is fixed with two stable blocks, and the opposite side of the two stable blocks is fixed with two fixed rods, and the outer surface of the two fixed rods is fixed with four moving blocks.

[0016] By adopting the technical scheme, the fixed rods are fixed with the moving blocks, so that the connecting rod can be smoothly lifted.

[0017] Further, the outer surface of the two driven rods is fixed with two external threads, the two external threads on each driven rod are opposite in rotation direction, the inner side of the four threaded connecting blocks is fixed with internal threads, the four internal threads are matched with the four external threads, and the bottom of the four threaded connecting blocks is fixed with limit plates.

[0018] By adopting the technical scheme, the opposite threads can promote the opposite movement of the two threaded connecting blocks in the same rotation direction.

[0019] Further, the sand screening mechanism comprises a sieve plate, a stepping motor and a vibration block, the sieve plate is movably connected with the inner side wall of the box, the bottom of the sieve plate is fixed with the stepping motor, the output shaft of the stepping motor is fixed with the vibration block, and the bottom of the sieve plate is fixed with a limit column.

[0020] By adopting the technical scheme, the continuous rotation of the vibration block can promote the continuous vibration of the sieve plate, thereby improving the sand screening efficiency.

[0021] Further, the sieve plate comprises a sieve net, a limit plate and a connecting plate, the front and rear sides of the sieve net are fixed with limit blocks, a limit groove is formed in the right side wall of the box, the limit groove is matched with the limit blocks, the left side of the sieve net is fixed with the connecting plate, the connecting plate is movably connected with the right side wall of the box and penetrates out of the right side wall of the box, and the bottom of the connecting plate is fixed with the stepping motor.

[0022] By adopting the technical scheme, the limit groove can limit the vertical direction of the sieve plate, so that the sieve plate only vibrates in the horizontal direction, thereby ensuring the sand screening effect.

[0023] Compared with the prior art, the technical scheme of the present application has the following beneficial effects:

[0024] The sand screening machine for earthwork engineering can continuously reciprocate and vibrate through the sieve plate on the sand screening mechanism during sand screening, so as to promote the rapid separation of sand and stones, improve the sand screening efficiency, adjust the height of the box through the lifting mechanism, realize the height adjustment of the sand screening mechanism, adapt to different use conditions, play the best effect under different working conditions, further improve the sand screening efficiency, and realize efficient sand screening through the cooperation of the sand screening mechanism and the lifting mechanism. BRIEF DESCRIPTION OF DRAWINGS

[0025] Figure 1 It is a structural schematic view of the utility model;

[0026] Figure 2 It is a connection relation view of the driving gear and the driven gear of the utility model;

[0027] Figure 3 It is an appearance view of the screen plate of the utility model;

[0028] Figure 4 It is a three-dimensional appearance view of the vibrating block of the utility model.

[0029] In the drawing: 1, base; 2, box; 3, sand screening mechanism; 301, screen plate; 3011, screen mesh; 3012, limiting block; 3013 connecting plate; 302 stepper motor; 303, vibrating block; 4, lifting mechanism; 401, servo motor; 402, driving rod; 403, driven rod; 404, driving gear; 405, driven gear; 406 threaded connecting block; 407, connecting rod; 408, moving block; 5, feeding rod. DETAILED DESCRIPTION

[0030] The technical solutions in the embodiments of the utility model will be clearly and completely described below with reference to the drawings in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, rather than all the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by those skilled in the art without creative labor fall within the scope of protection of the utility model.

[0031] Please refer to Figure 1 and Figures 3 to 4 In the embodiment, the base 1 is provided with the box 2 on the top, the sand screening mechanism 3 for screening sand is arranged on the inner side of the box 2, the feeding rod 5 is fixedly connected to the top of the box 2, the lifting mechanism 4 for adjusting the height of the box 2 is arranged on the top of the base 1, two partitions are fixed to the top of the base 1, and the second discharge port and the first discharge port are respectively arranged on the left and right sides of the box 2.

[0032] In addition, the sand screening mechanism 3 comprises the screen plate 301, the stepper motor 302 and the vibrating block 303, the screen plate 301 is movably connected to the inner side wall of the box 2, the bottom of the screen plate 301 is fixed to the stepper motor 302, the output shaft of the stepper motor 302 is fixed to the vibrating block 303, the bottom of the screen plate 301 is fixed to the limiting column, the screen plate 301 is limited by the limiting column, the vibration amplitude is avoided to be too large, the screen plate 301 is prevented from flying out, and the screen plate 301 is smoothly vibrated by movably connecting the screen plate 301 to the inner side wall of the box 2.

[0033] It needs to be further explained that the sieve plate 301 comprises a sieve screen 3011, a limiting block 3012 and a connecting plate 3013, the front and rear sides of the sieve screen 3011 are fixed with the limiting block 3012, the right side wall of the box body 2 is provided with a limiting groove, the limiting groove is matched with the limiting block 3012, the left side of the sieve screen 3011 is fixed with the connecting plate 3013, the connecting plate 3013 is movably connected with the right side wall of the box body 2 and penetrates to the outside of the right side wall of the box body 2, the bottom of the connecting plate 3013 is fixed with the stepping motor 302, through the cooperation of the limiting groove, the limiting block 3012 and the connecting plate 3013, the sieve plate 301 can be limited, and the stability of the sieve plate 301 is further improved.

[0034] It needs to be explained that the sand screening mechanism 3 promotes efficient sand screening, and the sieve plate 301 and the vibrating block 303 jointly realize sand screening and vibration at the same time, thereby realizing efficient sand screening.

[0035] Please refer to Figure 1 and Figure 2 , in order to improve the universality of the sand screening machine, the lifting mechanism 4 in the embodiment comprises a servo motor 401, a driving rod 402, two driven rods 403, a driving gear 404, two driven gears 405 and a lifting assembly, the top of the base 1 is fixed with the servo motor 401, the output shaft of the servo motor 401 is fixed with the driving rod 402, the outer surface of the driving rod 402 is fixed with the shaft center of the driving gear 404, the outer surfaces of the two driven rods 403 are fixed with the shaft centers of the driven gears 405, and the top of each driven rod 403 is provided with a lifting assembly.

[0036] It needs to be further explained that the outer surface of the servo motor 401 is fixed with a fixing frame, the servo motor 401 is fixed with the top of the base 1 through the fixing frame, the right side of the driving rod 402 is rotatably connected with a partition plate through a bearing, the two ends of each driven rod 403 are rotatably connected with two partition plates through bearings, the use of bearings can not affect the base 1 when the driving rod 402 and the driven rod 403 rotate, and ensure the smooth movement, the top of the base 1 is provided with a gap groove, the gap groove is matched with the driving gear 404 and the driven gear 405, and the gap groove can make the driving gear 404 and the driven gear 405 larger, thereby improving the transmission distance.

[0037] Further, the lifting assembly comprises four threaded connecting blocks 406, four connecting rods 407 and four moving blocks 408, the four threaded connecting blocks 406 are respectively screwed with the two driven rods 403, the top of the four threaded connecting blocks 406 is hingedly connected with the connecting rods 407, the end, away from the base 1, of the four connecting rods 407 is hingedly connected with the moving blocks 408, the bottom of the box body 2 is fixedly connected with two stable blocks, the opposite side of the two stable blocks is fixedly connected with two fixed rods, the outer surface of the two fixed rods is fixedly connected with the four moving blocks 408, the threaded connecting blocks 406 are hingedly connected with the connecting rods 407, when the threaded connecting blocks 406 are close to each other, the connecting rods 407 are rotated, and the box body 2 is further lifted.

[0038] It can be known that the outer surface of the two driven rods 403 is fixedly connected with two external threads, the two external threads on each driven rod 403 are opposite in rotation direction, the inner side of the four threaded connecting blocks 406 is fixedly connected with internal threads, the four internal threads are matched with the four external threads, the bottom of the four threaded connecting blocks 406 is fixedly connected with limiting plates, the threaded connecting blocks 406 are limited by the limiting plates, the threaded connecting blocks 406 are prevented from rotating with the driven rods 403, and the threaded connecting blocks 406 are further moved on the driven rods 403.

[0039] In the embodiment, the servo motor 401 outputs power, the power is transmitted through the driving gear 404 and the two driven gears 405, the threaded connecting blocks 406 are further moved, and finally the connecting rods 407 can rotate around the threaded connecting blocks 406, so that the box body 2 is lifted.

[0040] It can be understood that the screen plate 301 can be vibrated while screening sand through the sand screening mechanism 3, so that the sand screening effect is improved, and the lifting mechanism 4 is used for lifting, so that the sand screening machine can adapt to various conditions.

[0041] The electric elements in the paper are electrically connected with the controller and the power supply, the control mode of the utility model is controlled through the controller, the control circuit of the controller can be realized through simple programming of the person skilled in the art, the power supply also belongs to the common knowledge in the field, and the utility model is mainly used for protecting mechanical devices, therefore, the control mode and the circuit connection of the utility model will not be explained in detail.

[0042] The working principle of the above embodiment is as follows:

[0043] Before use, the height of the sand screening machine can be adjusted according to the specific construction conditions. First, start the servo motor 401, and the motor power is transmitted to the two driven rods 403 through the driving rod 402, the driving gear 404 and the driven gear 405, further promoting the rotation of the two driven rods 403, promoting the relative movement of the two threaded connecting blocks 406 on each driven rod 403, promoting the lifting of the box 2 under the drive of the connecting rod 407, further driving the lifting of the sand screening mechanism 3, thereby adapting to different use conditions. When in use, the sand and gravel is poured from the feeding rod 5, and the stepping motor 302 is started. Under the drive of the stepping motor 302, the screen plate 301 is constantly vibrated, accelerating the sand screening process. Since the screen plate 301 is inclined, the sand and gravel that is not screened will slide out of the first discharge port, and the screened sand and gravel will slide out of the second discharge port through the bottom wall in the box 2, thereby completing the sand screening work. The device can freely adjust the height and cooperate with the continuous vibration of the screen plate 301 to complete efficient sand screening.

Claims

1. A sand screening machine for earthwork, comprising a base (1), characterized in that: The top of the base (1) is provided with a box body (2), the inner side of the box body (2) is provided with a sand screening mechanism (3) for screening sand, the top of the box body (2) is fixedly connected with a feeding rod (5), the top of the base (1) is provided with a lifting mechanism (4) for adjusting the height of the box body (2), the top of the base (1) is fixedly provided with two partitions, and the left and right sides of the box body (2) are respectively provided with a second discharge port and a first discharge port; The lifting mechanism (4) comprises a servo motor (401), a driving rod (402), two driven rods (403), a driving gear (404), two driven gears (405) and a lifting assembly, the top of the base (1) is fixedly connected with the servo motor (401), the output shaft of the servo motor (401) is fixedly connected with the driving rod (402), the outer surface of the driving rod (402) is fixedly connected with the shaft center of the driving gear (404), the outer surfaces of the two driven rods (403) are fixedly connected with the shaft centers of the driven gears (405), and the top of each driven rod (403) is provided with a lifting assembly.

2. The sand screening machine for earthwork according to claim 1, characterized in that: The outer surface of the servo motor (401) is fixedly connected with a fixing frame, the servo motor (401) is fixedly connected with the top of the base (1) through the fixing frame, the right side of the driving rod (402) is rotatably connected with the partition through a bearing, and the two ends of each driven rod (403) are rotatably connected with the two partitions through bearings.

3. The sand screening machine for earthwork according to claim 1, characterized in that: The top of the base (1) is provided with a gap, and the gap is matched with the driving gear (404) and the driven gear (405).

4. The sand screening machine for earthwork according to claim 1, characterized in that: The lifting assembly comprises four threaded connection blocks (406), four connecting rods (407) and four moving blocks (408), the four threaded connection blocks (406) are respectively threadedly connected with the two driven rods (403), the top of each threaded connection block (406) is hingedly connected with a connecting rod (407), and the end, away from the base (1), of each connecting rod (407) is hingedly connected with a moving block (408).

5. The sand screening machine for earthwork according to claim 4, characterized in that: The bottom of the box body (2) is fixedly connected with two stable blocks, the opposite side of each stable block is fixedly connected with a fixing rod, and the outer surfaces of the two fixing rods are fixedly connected with the four moving blocks (408).

6. The sand screening machine for earthwork according to claim 4, characterized in that: The outer surfaces of the two driven rods (403) are fixedly connected with two external threads, the two external threads on each driven rod (403) are oppositely threaded, the inner sides of the four threaded connection blocks (406) are fixedly connected with internal threads, the four internal threads are matched with the four external threads, and the bottoms of the four threaded connection blocks (406) are fixedly connected with limiting plates.

7. The sand screening machine for earthwork according to claim 1, characterized in that: The sand screening mechanism (3) comprises a sieve plate (301), a stepping motor (302) and a vibrating block (303), the sieve plate (301) is movably connected with the inner wall of the box body (2), the bottom of the sieve plate (301) is fixedly connected with the stepping motor (302), the output shaft of the stepping motor (302) is fixedly connected with the vibrating block (303), and the bottom of the sieve plate (301) is fixedly connected with a limiting column.

8. The sand screening machine for earthwork according to claim 7, characterized in that: The screen plate (301) comprises a screen mesh (3011), a limiting block (3012) and a connecting plate (3013), the screen mesh (3011) is fixed with the limiting block (3012) on both sides, a limiting groove is formed in the right side wall of the box (2), the limiting groove is matched with the limiting block (3012), the left side of the screen mesh (3011) is fixed with the connecting plate (3013), the connecting plate (3013) is movably connected with the right side wall of the box (2) and penetrates to the outside of the right side wall of the box (2), and the bottom of the connecting plate (3013) is fixed with the stepping motor (302).

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