CN116493242A

CN116493242A - Civil engineering screening sand device

Info

Publication number: CN116493242A
Application number: CN202310547463.9A
Authority: CN
Inventors: 王卓瑄
Original assignee: Shandong Jianzhu University
Current assignee: Shandong Jianzhu University
Priority date: 2023-05-12
Filing date: 2023-05-12
Publication date: 2023-07-28

Abstract

The invention discloses a civil engineering sand screening device, which relates to the field of civil engineering sand screening and solves the problems that the existing sand screening device is inconvenient to clean, affects the sand screening effect and is low in efficiency. The device has can be incessantly divide the sieve to the sand, and convenient clearance divides the sieve unloading simultaneously even, divides the sieve effect better.

Description

Civil engineering screening sand device

Technical Field

The invention relates to the field of civil engineering sand screening, in particular to a civil engineering sand screening device.

Background

Civil engineering (Civil Engineering) is a generic term for science and technology in the construction of various types of earth-working facilities. It refers to both the materials and equipment used and the technical activities of surveying, designing, constructing, maintaining, repairing, etc. performed, as well as the objects of engineering construction. I.e., built on the ground or underground, land, various engineering facilities directly or indirectly serving human life, production, military, scientific research, such as houses, roads, railways, pipes, tunnels, bridges, canals, dams, ports, power stations, airports, ocean platforms, water supply and drainage, protection engineering, etc. Civil engineering refers to various technical works such as investigation, planning, design, construction, installation and maintenance and the like and finished engineering entities thereof for building, constructing or expanding various engineering besides house construction.

According to the application number: cn201910546708.X, filing date: 2019-06-24, the publication date is: 2020-09-22, the name is a China patent of a civil engineering sand screening device, it discloses a civil engineering sand screening device, the invention utilizes the cross that horizontal pole and longitudinal make up to form the screen cloth structure, make horizontal pole and longitudinal pole carry on equidistant adjustment according to the demand through horizontal interval adjusting device and longitudinal interval adjusting device, lock function and screw thread self-locking function of the hydraulic telescopic link in the hydraulic cylinder at the same time, realize the position lock after adjusting, make horizontal pole and longitudinal pole in the screen cloth structure stable and reliable in the screening process, and can be suitable for fine sand or sand stone of different particle diameters, avoid changing of the screen cloth, at the same time, the power device drives horizontal pole and longitudinal pole that cooperates each other when screen cloth card hole appears or need to clear up the screen cloth, then through adjusting the interval, the invention easy operation, the structure is ingenious, can clear up in time, screen cloth efficiency and quality have been greatly improved. Although the technical content of the sand screening machine can be cleaned in time without replacing the screen, the sand screening machine still cannot overcome the defect that the screen can be cleaned and can work continuously, so that the working efficiency of sand screening is limited. Thus, a sand screening device for civil engineering is provided.

Disclosure of Invention

The invention aims to provide a sand screening device for civil engineering, which solves the problems that the conventional sand screening device cannot conveniently clean a screen in time to influence the sand screening effect, and meanwhile, the sand screening work is influenced when the screen is cleaned, so that the sand screening efficiency is reduced.

In order to achieve the above purpose, the present invention provides the following technical solutions: the utility model provides a civil engineering screening sand device, includes pedestal pile, support underframe, bradyseism subassembly, connecting seat, vibrating frame, and vibrating motor is all installed to the both sides of vibrating frame, its characterized in that, the spout has all been seted up to vibrating frame along the both sides inner wall of length direction, and the slip is provided with the slider in the spout, every install scroll articulated seat on the slider, inside left and right sides of vibrating frame is connected with left sieve and right sieve through the rotation of scroll articulated seat respectively, and left sieve and right sieve rotate anticlockwise and clockwise respectively under the effect of respective scroll articulated seat, both sides all fixedly connected with support frame around the support underframe, and be provided with position adjustment mechanism on the support frame to install vertical electronic slide rail through position adjustment mechanism, and install the sand guide funnel between the vertical electronic slide rail of front and back side, the below of sand guide funnel still is provided with even sand mechanism, still fixedly connected with between the lower extreme of vertical electronic slide rail of front and back both sides and collect the sand guide;

the spring hinge seat is all installed at the front and back both ends of the left and right sides frame of braced underframe, and the spring hinge seat rotation is provided with the round pin axle, epaxial fixedly connected with top stay and the push down strip of round pin respectively, each top stay is kept away from the front and back side frame lower terminal surface laminating support of one end each other with left sieve and right sieve respectively, and top stay is spacing with the lower terminal surface conflict of vibrating frame, be provided with linkage adjustment mechanism between left sieve, the right sieve of vertical electronic slide rail and both sides.

Preferably, the position adjusting mechanism comprises a transverse electric sliding rail and a transverse sliding block, wherein the upper end of the supporting frame is fixedly provided with the transverse electric sliding rail, the transverse electric sliding rail is internally provided with the transverse sliding block in a sliding manner, the transverse sliding blocks on the front side and the rear side are respectively fixedly provided with a vertical electric sliding rail, and the vertical electric sliding rail is internally provided with a vertical sliding block in a sliding manner, and is fixedly connected with a sand guiding funnel through the vertical sliding block.

Preferably, the linkage adjustment mechanism comprises an upper rack and a driven gear, wherein a rotating shaft seat is arranged on one side, which is close to each other, of each supporting frame on the front side and the rear side, the driven gear is fixedly connected with the driven gear through the rotating shaft seat, a limiting sliding plate is fixedly connected between the supporting frames on the front side and the rear side, a sliding frame is sleeved on the outer side of the limiting sliding plate, a lower rack is fixedly connected with the upper end face of each sliding block, a connecting block is fixedly connected with one side, which is far away from each other, of each vertical electric sliding rail, an upper rack is fixedly arranged on one side, which is far away from each other, of each connecting block on the front side and the rear side, the driven gear is positioned between the upper rack and the lower rack, the driven gear is respectively meshed with the upper rack and the lower rack on the upper side and the lower side, a mounting seat is fixedly arranged on the left side and the right side of the lower end face of each sliding frame along the length direction, a push rod is fixedly connected with the two sides on the front side and the rear side, and the push rod is in sliding connection with one side.

Preferably, the round hole is further formed in the sliding block in a penetrating mode, a guide sliding rod is fixedly connected between the inner walls of the two sides of the sliding groove, the sliding block is arranged on the outer side of the guide sliding rod in a sliding mode through the round hole in a sleeved mode, a reset spring is sleeved on the outer side of the guide sliding rod, and two ends of the reset spring are fixedly connected with the sliding block and the inner wall of the sliding groove respectively.

Preferably, the extending end of the sliding block at the outer side of the sliding groove is fixedly connected with an L-shaped connecting rod, the scroll hinging seat is fixedly connected with the sliding block through the L-shaped connecting rod, and the L-shaped connecting rods fixedly connected with the scroll hinging seat on the left sieve plate and the right sieve plate at the left side and the right side are symmetrically arranged.

Preferably, the L-shaped connecting rods on the front side and the rear side of the left sieve plate and the right sieve plate on the left side and the right side are respectively sleeved with the lower ends of the vertical electric sliding rails in a sliding mode, and one end, fixedly connected with the sliding blocks, of each L-shaped connecting rod is arranged on one axial side of the scroll hinging seat.

Preferably, the upper rack, the lower rack and the driven gear are all positioned at the front outer side and the rear outer side of the vibration frame, the lower end of each vertical electric sliding rail is fixedly connected with a concave frame, the collection hourglass is fixedly connected with the concave frame, and each push rod is sleeved with the concave frame at one side in a sliding penetrating manner.

Preferably, the sand homogenizing mechanism comprises an arc-shaped mounting seat and a lantern ring, wherein the lower ends of the left side and the right side of the sand guiding funnel are fixedly connected with the arc-shaped mounting seat, the outer sides of the arc-shaped mounting seats are jointly rotated and sleeved with the lantern ring, the inner sides of the lantern ring are fixedly connected with a gear ring, each lower end face of the arc-shaped mounting seat is fixedly provided with a motor, the output end of the motor is fixedly provided with a driving gear, the driving gear is in meshed connection with the gear ring, the lower end of the lantern ring is fixedly connected with a conical funnel, the inner wall of the conical funnel is fixedly connected with a separation strip, and the lower end face of the conical funnel is fixedly connected with a scraping plate.

Preferably, the lower end of the sand guiding funnel is positioned right above the lantern ring, the conical funnel takes the center of the circle as the center, a plurality of screening division bars are fixedly connected with the conical funnel along the radial array of the conical funnel, and the scraping plates are arranged along the diameter direction of the conical funnel.

Preferably, the cushioning component is a buffering rubber column and a buffering spring, the buffering rubber column is fixedly connected between the lower end face of the connecting seat and the supporting underframe, the buffering spring is sleeved on the outer side of the buffering rubber column, and the upper end and the lower end of the buffering spring are respectively fixedly connected with the connecting seat and the supporting underframe close to one side face.

Compared with the related art, the civil engineering sand screening device provided by the invention has the following beneficial effects:

1. the invention provides a civil engineering sand screening device, which is characterized in that two sides of the inside of a vibrating frame are respectively provided with a left screen plate and a right screen plate, the two screen plates are respectively connected with sliding blocks which are arranged in sliding grooves formed in the inner wall of the vibrating frame in a rotating way through scroll hinging seats, and a sand guiding funnel can move in position under the linkage adjustment of a transverse electric sliding rail and a vertical electric sliding rail, so that the sand guiding funnel can be respectively positioned right above the left screen plate and the right screen plate, and respectively utilize the left screen plate and the right screen plate, thereby being convenient for switching and using, not causing the suspension of sand screening work and improving the efficiency.

2. The invention provides a civil engineering sand screening device, which is provided with a linkage adjusting mechanism, when a sand guiding funnel is adjusted left and right to move, an upper rack is driven to move in the same direction as the sand guiding funnel, a lower rack is driven to move in the opposite and same way, when a screen plate is conveniently switched to use, when a left screen plate is used, the sand guiding funnel moves leftwards, so that the lower rack drives a push rod to move rightwards, further the push rod can be pushed to rotate, the upper stay is driven to rotate, further the right screen plate on the right side rotates downwards under the action of a scroll hinging seat, at the moment, the surface of the right screen plate is inclined, and coarse sand and other large particles filtered on the right screen plate can be conveniently shaken off through the vibration of a vibrating frame, so that the effect of convenient cleaning is realized.

3. The invention provides a civil engineering sand screening device, which is provided with a sand homogenizing mechanism, so that sand can be dispersed by a screening division bar in a conical funnel when the sand guiding funnel is used for discharging, meanwhile, the conical funnel can rotate, sand can be conveniently and further scattered and uniformly falls on a screen plate to screen sand, meanwhile, the lower end of the conical funnel is fixedly connected with a scraping plate, and when the screen plate is locally piled with too high sand, the sand can be conveniently and uniformly scraped by the scraping plate.

Make this device have can be incessantly divide the sieve to the sand, and convenient clearance divides the sieve unloading simultaneously even, divides the sieve effect better.

Drawings

Fig. 1 is a schematic structural view of the present invention.

Fig. 2 is a cross-sectional view of a bottom view of the present invention.

Fig. 3 is a cross-sectional view of the structure of the present invention.

Fig. 4 is an enlarged view at a in fig. 3.

Fig. 5 is a cross-sectional view of a side view structure of the present invention.

Fig. 6 is an enlarged view at B in fig. 5.

Fig. 7 is an enlarged view at C in fig. 5.

FIG. 8 is a schematic diagram of a sand guiding funnel layout structure according to the present invention.

Fig. 9 is a schematic view of a partial structure of a screen deck according to the present invention.

In the figure: 1. a pedestal pile; 2. a supporting bottom frame; 3. a cushioning assembly; 301. a buffer rubber column; 302. a buffer spring; 4. a connecting seat; 5. a vibration frame; 6. a vibration motor; 7. a chute; 701. a guide slide bar; 702. a return spring; 8. a slide block; 801. a round hole; 802. an L-shaped connecting rod; 9. a scroll hinge seat; 10. a left sieve plate; 11. a right sieve plate; 12. a support frame; 1201. a transverse electric sliding rail; 1202. a transverse slide block; 1203. vertical electric sliding rail; 1204. a vertical sliding block; 13. a sand guiding funnel; 1301. an arc-shaped mounting seat; 1302. a drive gear; 1303. a collar; 1304. a gear ring; 1305. a conical funnel; 1306. screening parting strips; 1307. a scraper; 14. collecting an hourglass; 1401. a concave frame; 15. a connecting block; 1501. a rack is arranged; 1502. a limit sliding plate; 1503. a sliding frame; 1504. a lower rack; 1505. a rotating shaft seat; 1506. a driven gear; 16. a mounting base; 1601. a push rod; 17. a spring hinge base; 1701. a lower chute; 1702. a limit sliding block; 1703. a second electric cylinder; 18. a pin shaft; 1801. a top stay; 1802. pushing down the bar.

Detailed Description

The following description of the embodiments of the present invention will be made clearly and fully with reference to the accompanying drawings, in which it is evident that the embodiments described are only some, but not all embodiments of the invention; all other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.

Embodiment one:

referring to fig. 1-9, the present invention provides a technical solution: the utility model provides a civil engineering screening sand device, includes base stake 1, supports underframe 2, cushioning subassembly 3, connecting seat 4, vibrating frame 5, wherein the equal fixedly connected with base stake 1 in terminal surface four corners under the support underframe 2, and the up end four corners all is provided with cushioning subassembly 3 to through cushioning subassembly 3 fixedly connected with connecting seat 4, vibrating frame 5 is in the top that supports underframe 2 promptly, and vibrating motor 6 is all installed to vibrating frame 5's both sides.

The vibrating frame 5 has all seted up spout 7 along the both sides inner wall of length direction, and the spout 7 slides and is provided with slider 8, all install spiral articulated seat 9 on every slider 8, inside left and right sides of vibrating frame 5 is connected with left sieve 10 and right sieve 11 through spiral articulated seat 9 rotation respectively, and left sieve 10 and right sieve 11 rotate anticlockwise and clockwise respectively under the effect of each spiral articulated seat 9, both sides all fixedly connected with support frame 12 around supporting underframe 2, and be provided with position adjustment mechanism on the support frame 12, and install vertical electronic slide rail 1203 through position adjustment mechanism, and install sand guide hopper 13 between the vertical electronic slide rail 1203 of front and back side, sand guide hopper 13's below still is provided with even sand mechanism, still fixedly connected with between the lower extreme of vertical electronic slide rail 1203 of front and back both sides collects hourglass 14, and be used for collecting the sand that divides the sieve, can set up the container under it and collect, also can collect its lower extreme connecting tube.

The spring hinge bases 17 are mounted at the front and rear ends of the frames on the left side and the right side of the supporting bottom frame 2, the pin shafts 18 are rotatably arranged at the front and rear ends of the frames on the left side and the right side of the supporting bottom frame 2, the upper support bars 1801 and the lower support bars 1802 are fixedly connected to the upper support bars 1801 and the lower support bars 1802 respectively, the upper support bars 1801 are respectively attached to the lower end faces of the front side and the rear side frames on the left side and the rear side of the right side of the supporting bottom frame 10 and the lower support bars 1802, the upper support bars 1801 are in a horizontal state when the sand guide hopper 13 is positioned in the middle of the upper support bars 1801, the upper support bars 1801 are in contact with the lower end faces of the frames 5 when the upper support bars 1203 are driven to rotate upwards, and a linkage adjusting mechanism is arranged between the left support bars 10 and the right support bars 11 on the two sides, so that the left support bars 10 or the right support bars 11 on the two sides rotate anticlockwise and rotate clockwise respectively under the action of the respective scroll hinge bases 9, and the left support bars 1801 and the left support bars and the right support bars 1801 on the lower side of the left side and the right support bars 11 on the lower side of the left side and the lower support bars when the sand guide hopper 13 is positioned in the middle.

The position adjusting mechanism comprises a transverse electric sliding rail 1201 and a transverse sliding block 1202, wherein the upper end of a supporting frame 12 is fixedly provided with the transverse electric sliding rail 1201, the transverse sliding block 1202 is arranged in the transverse electric sliding rail 1201 in a sliding manner, the vertical electric sliding rail 1203 is respectively and fixedly arranged on the front side and the rear side of the supporting frame through the transverse sliding block 1202, the vertical sliding block 1204 is arranged in the vertical electric sliding rail 1203 in a sliding manner, the sand guiding hopper 13 is fixedly connected with the vertical sliding block 1204, and further the sand guiding hopper 13 can be flexibly adjusted left and right or up and down under the driving of the transverse electric sliding rail 1201 and the vertical electric sliding rail 1203, the left sieve plate 10 or the right sieve plate 11 is conveniently used in a switching manner, sand sieving work can be continuously carried out on the other side even if one side is cleaned, and sand sieving efficiency is guaranteed.

Embodiment two:

referring to fig. 1-9, the linkage adjustment mechanism includes an upper rack 1501 and a driven gear 1506, and a rotating shaft seat is mounted on each side of the front and rear support frames 12 close to each other

1505, and fixedly connected with driven gear through pivot seat 1506, all fixedly connected with limiting slide 1502 between the support frame 12 of front and back both sides, limiting slide 1502 outside cover is equipped with sliding frame 1503, and the up end fixedly connected with down rack 1504 of sliding block 1503, vertical electronic slide 1203 is all fixedly connected with connecting block 15 of side that keeps away from each other, and the connecting block 15 of front and back both sides is all fixedly installed with and is gone up rack 1501 of side that keeps away from each other, driven gear 1506 is in between rack 1501 and the lower rack 1504, and driven gear 1506 respectively with upper and lower both sides respectively with last rack 1501 and lower rack 1504 meshing be connected, sliding frame 1503 is along the lower terminal surface left and right sides of length direction all fixed mounting seat 16, the mount seat 16 of front and back both sides is all fixedly connected with push rod 1601 of side that is close to each other, push down strip 1802 and push rod 1601 sliding connection of each side.

When the sand guiding funnel 13 is adjusted left and right, the upper rack 1501 is driven to move synchronously, the driven gear 1506 is driven to rotate, the lower rack 1504 is driven to slide reversely until the sand guiding funnel 13 is driven to move right above the corresponding left screen plate 10 or right screen plate 11, and the lower rack 1504 also moves in the same process.

The extending end of the sliding block 8 outside the sliding groove 7 is fixedly connected with an L-shaped connecting rod 802, the scroll hinging seat 9 is fixedly connected with the L-shaped connecting rod 802, the L-shaped connecting rods 802 fixedly connected with the scroll hinging seat 9 on the left sieve plate 10 and the right sieve plate 11 on the left side and the right sieve plate 11 are symmetrically arranged, and therefore the vertical electric sliding rail 1203 can be conveniently adjusted and moved into the L-shaped connecting rod 802 until the vertical electric sliding rail is limited by the L-shaped connecting rod 802.

The left sieve plate 10 on the left side and the right side and the L-shaped connecting rod 802 on the front side and the rear side of the right sieve plate 11 are respectively sleeved with the lower end of the vertical electric sliding rail 1203 in a sliding way, one end of the L-shaped connecting rod 802 fixedly connected with the sliding block 8 is arranged on one axial side of the scroll hinging seat 9, a round hole 801 is formed in the sliding block 8 in a penetrating way, a guide sliding rod 701 is fixedly connected between the inner walls on the two sides of the sliding groove 7, the sliding block 8 is sleeved on the outer side of the guide sliding rod 701 in a sliding way through the round hole 801, the outer side of the guide sliding rod 701 is sleeved with a reset spring 702, two ends of the reset spring 702 are respectively fixedly connected with the sliding block 8 and the inner walls of the sliding groove 7, at the moment, the vertical electric sliding rail 1203 moves into the L-shaped connecting rod 802 until the vertical electric sliding rail 1203 is limited by the L-shaped connecting rod, the vertical electric sliding rail 1203 is continuously moved, the sliding rail 1203 is synchronously driven by the sliding plate 6 and the sliding rail, the sliding rail is synchronously moved, and the reset spring 702 on one side, due to the same travel of the upper and lower racks, when the vertical electric slide rails 1203 are just sleeved with the L-shaped connecting rod 802, the sand guiding funnel 12 will be located right above the screen plate, the push rod 1601 will be driven by the lower rack 1504 to a position attached to the push down strip 1802, then when the vertical electric slide rails 1203 continue to move, the sand guiding funnel 13 will also be located right above the screen plate, the sand guiding funnel 13 and the vertical electric slide rails 1203 continue to slide and adjust along the direction, while compressing the return spring 702, the lower rack 1504 will drive the push down strip 1802 to rotate downwards, so that the upper stay 1801 rotates downwards, eliminating the interference to the lower end of the side frame of the screen plate, the screen plate on the side will rotate downwards under the action of the scroll hinge seat 9, and in an inclined state, at this time, the upper stay 1801 will not be out of contact with the frame of the screen plate, and then under the driving of the vibration frame 5, coarse sand and large particulate matters on the sand are removed by the inclined sieve plate surface, so that the sand is convenient to clean.

The upper rack 1501, the lower rack 1504 and the driven gear 1506 are all positioned on the front outer side and the rear outer side of the vibration frame 5, the lower end of each vertical electric sliding rail 1203 is fixedly connected with a concave frame 1401, the sand-collecting hourglass 14 is fixedly connected with the concave frame 1401, each push rod 1601 is sleeved with the concave frame 1401 on one side in a sliding penetrating manner, the push rods 1601 can be prevented from sliding and abutting against the vertical electric sliding rails 1203 when being driven to move, and the situation can be effectively avoided through the bent concave frames 1401.

Embodiment III:

referring to fig. 1-9, the sand homogenizing mechanism includes an arc-shaped mounting seat 1301 and a collar 1303, wherein the lower ends of the left and right sides of the sand guiding funnel 13 are fixedly connected with the arc-shaped mounting seat 1301, the outer sides of the arc-shaped mounting seats 1301 on both sides are jointly rotated and sleeved with the collar 1303, the inner sides of the collars 1303 are fixedly connected with a gear ring 1304, the lower end face of each arc-shaped mounting seat 1301 is fixedly provided with a motor, the output end of the motor is fixedly provided with a driving gear 1302, the driving gear 1302 is in meshed connection with the gear ring 1304, the lower end of the collar 1303 is fixedly connected with a conical funnel 1305, the inner wall of the conical funnel 1305 is fixedly connected with a separation strip 1306, and the lower end face of the conical funnel 1305 is fixedly connected with a scraper 1307.

The lower end of the sand guiding funnel 13 is located right above the collar 1303, the conical funnel 1305 is centered on the center of the collar 1303, and a plurality of screening separation bars 1306 are fixedly connected to the conical funnel 1305 along the radial array of the conical funnel, and the scraping plates 1307 are arranged along the diameter direction of the conical funnel 1305.

And when the sand guiding funnel 13 is used for discharging, sand can be firstly dispersed by the separation screen parting strips 1306 in the sand guiding funnel through the conical funnel 1305, meanwhile, the conical funnel 1306 can rotate, further sand can be conveniently and further scattered and then uniformly falls onto the screen plate to screen sand, meanwhile, the scraping plate 1307 is fixedly connected to the lower end of the conical funnel 1305, when the sand with overhigh local stacking of the screen plate is conveniently and uniformly scraped through the scraping plate, and the upper ends of the further separation screen parting strips 1306 are chamfered to form sharp points, so that sand is prevented from gathering at the upper ends of the separation screen parting strips 1306.

Embodiment four:

referring to fig. 1-9, the cushioning component 3 is a cushion rubber column 301 and a cushion spring 302, the cushion rubber column 301 is fixedly connected between the lower end surface of the connection seat 4 and the supporting bottom frame 2, the cushion spring 302 is sleeved on the outer side of the cushion rubber column 301, and the upper end and the lower end of the cushion spring 302 are respectively and fixedly connected with the side surface, close to the side surface, of the connection seat 4 and the supporting bottom frame 2.

The specific buffer assembly is not limited to the above-mentioned manner, but may be a structure that is mainly used for reducing vibration of the vibration frame 5 driven by the vibration motor 6, and transmitting the vibration to support other mechanisms such as the bottom frame 2.

Claims

1. The utility model provides a civil engineering screening sand device, includes pedestal pile (1), support underframe (2), bradyseism subassembly (3), connecting seat (4), vibrating frame (5), and vibrating motor (6) are all installed to vibrating frame (5) both sides, a serial communication port, spout (7) have all been seted up along length direction's both sides inner wall to vibrating frame (5), and slide in spout (7) is provided with slider (8), every all install scroll articulated seat (9) on slider (8), inside left and right sides of vibrating frame (5) are connected with left sieve plate (10) and right sieve plate (11) through scroll articulated seat (9) rotation respectively, and left sieve plate (10) and right sieve plate (11) anticlockwise and clockwise rotation respectively under the effect of each scroll articulated seat (9), and all fixedly connected with support frame (12) on support frame (12) to install vertical electric slide rail (1203) through position adjustment mechanism between vertical slide rail (1203) of front and back side, install vertical hopper (1203) down in the front and back side (13) is connected with vertical hopper (13) down, vertical hopper (13) down is connected with down in the front and down the sand hopper (13);

spring hinge seats (17) are arranged at the front end and the rear end of the side frames on the left side and the right side of the supporting underframe (2), pin shafts (18) are rotationally arranged on the spring hinge seats (17), upper support bars (1801) and pushing strips (1802) are fixedly connected to the pin shafts (18), the upper support bars (1801) are respectively attached to and supported by the front side frame and the rear side frame of the left sieve plate (10) and the right sieve plate (11), the front side frame and the rear side frame are far away from one another, the upper support bars (1801) are abutted to and limited by the lower end faces of the vibrating frame (5), and a linkage adjusting mechanism is arranged between the vertical electric sliding rail (1203) and the left sieve plate (10) and the right sieve plate (11) on the two sides.

2. The civil engineering sand screening device according to claim 2, wherein the position adjusting mechanism comprises a transverse electric sliding rail (1201) and a transverse sliding block (1202), the upper end of the supporting frame (12) is fixedly provided with the transverse electric sliding rail (1201), the transverse electric sliding rail (1201) is internally provided with the transverse sliding block (1202), the vertical electric sliding rail (1203) is fixedly arranged through the transverse sliding blocks (1202) on the front side and the rear side respectively, the vertical electric sliding rail (1203) is internally provided with the vertical sliding block (1204), and the sand guiding hopper (13) is fixedly connected through the vertical sliding block (1204).

3. The civil engineering sand screening device according to claim 2, wherein the linkage adjustment mechanism comprises an upper rack (1501) and a driven gear (1506), wherein the rotating shaft seat (1505) is installed on one side, which is mutually close, of the supporting frames (12) on the front side and the rear side, the driven gear is fixedly connected with the driven gear through the rotating shaft seat (1506), the limiting slide plate (1502) is fixedly connected between the supporting frames (12) on the front side and the rear side, a sliding frame (1503) is sleeved on the outer side of the limiting slide plate, the upper end face of the sliding block (1503) is fixedly connected with a lower rack (1504), one side, which is mutually far away, of each of the vertical electric sliding rails (1203), is fixedly connected with a connecting block (15), one side, which is mutually far away, of each of the connecting block (15), is fixedly connected with an upper rack (1501), the driven gear (1506) is located between the upper rack (1501) and the lower rack (1504), the driven gear (1506) is respectively meshed with the upper rack (1501) and the lower rack (1504), the lower end face (1503) is fixedly connected with the push rods (1802) on the left side, which is mutually far away from each other, and the push rods (16) are fixedly connected with the two sides, respectively.

4. The civil engineering sand screening device according to claim 3, wherein the sliding block (8) is further provided with a round hole (801) in a penetrating mode, a guide sliding rod (701) is fixedly connected between inner walls of two sides of the sliding groove (7), the sliding block (8) is slidably sleeved on the outer side of the guide sliding rod (701) through the round hole (801), a reset spring (702) is sleeved on the outer side of the guide sliding rod (701), and two ends of the reset spring (702) are fixedly connected with the sliding block (8) and the inner walls of the sliding groove (7) respectively.

5. The sand screening device for civil engineering according to claim 4, wherein the extending end of the sliding block (8) at the outer side of the sliding groove (7) is fixedly connected with an L-shaped connecting rod (802), the left screen plate (10) and the right screen plate (11) are fixedly connected with a scroll hinge seat (9) through the L-shaped connecting rod (802), and the L-shaped connecting rods (802) fixedly connected with the scroll hinge seat (9) on the left screen plate and the right screen plate are symmetrically arranged.

6. The civil engineering sand screening device according to claim 5, wherein the left screen plate (10) on the left side and the right screen plate (11) on the right side are respectively sleeved with the lower ends of the vertical electric sliding rails (1203) in a sliding manner, and one end of the L-shaped connecting rods (802) fixedly connected with the sliding blocks (8) is arranged on one axial side of the scroll hinge seat (9).

7. The civil engineering sand screening device according to claim 6, wherein the upper rack (1501), the lower rack (1504) and the driven gear (1506) are located at the front outer side and the rear outer side of the vibration frame (5), the lower end of each vertical electric sliding rail (1203) is fixedly connected with a concave frame (1401), the sand collecting hourglass (14) is fixedly connected with the concave frame (1401), and each push rod (1601) is sleeved with the concave frame (1401) on one side in a sliding penetrating mode.

8. The sand screening device for civil engineering according to claim 2 or 7, wherein the sand homogenizing mechanism comprises arc-shaped mounting seats (1301) and lantern rings (1303), the lower ends of the left side and the right side of the sand guiding funnel (13) are fixedly connected with the arc-shaped mounting seats (1301), the outer sides of the arc-shaped mounting seats (1301) on two sides are jointly rotated and sleeved with lantern rings (1303), the inner sides of the lantern rings (1303) are fixedly connected with gear rings (1304), each lower end face of the arc-shaped mounting seat (1301) is fixedly provided with a motor, a driving gear (1302) is fixedly arranged at the output end of the motor, the driving gear (1302) is in meshed connection with the gear rings (1304), the lower ends of the lantern rings (1303) are fixedly connected with conical funnels (1305), the inner walls of the conical funnels (1305) are fixedly connected with separation bars (1306), and the lower end faces of the conical funnels (1305) are fixedly connected with scraping plates (1307).

9. The civil engineering sand screening device according to claim 8, wherein the lower end of the sand guiding funnel (13) is located right above the collar (1303), the conical funnel (1305) is centered on the center of the circle, a plurality of separation strips (1306) are fixedly connected to the conical funnel along a radial array of the conical funnel, and the scraping plates (1307) are arranged along the diameter direction of the conical funnel (1305).

10. The sand screening device for civil engineering according to claim 2, wherein the cushioning component (3) is a buffering rubber column (301) and a buffering spring (302), the buffering rubber column (301) is fixedly connected between the lower end face of the connecting seat (4) and the supporting bottom frame (2), the buffering spring (302) is sleeved on the outer side of the buffering rubber column (301), and the upper end and the lower end of the buffering spring (302) are respectively fixedly connected with the connecting seat (4) and the supporting bottom frame (2) close to one side face.