CN110639788A

CN110639788A - Automatic sand and stone screening device for constructional engineering

Info

Publication number: CN110639788A
Application number: CN201910905597.7A
Authority: CN
Inventors: 俞嘉陈; 陆路
Original assignee: Zhejiang College of Construction
Current assignee: Zhejiang College of Construction
Priority date: 2019-09-24
Filing date: 2019-09-24
Publication date: 2020-01-03

Abstract

The invention discloses an automatic sand and stone screening device for constructional engineering, and mainly relates to the field of construction machinery. The screen comprises a base plate, be equipped with the bracing piece on the bottom plate, be equipped with slewing mechanism on the bracing piece, the last sieve bucket that is equipped with of slewing mechanism, the card has the screen cloth on the sieve bucket inner wall, the bottom cover of the outer peripheral surface of sieve bucket has driven bevel gear dish, just sieve bucket one side is equipped with the support frame on the bottom plate, there is driving motor through the bolt fastening on the support frame, the end fixing of driving motor's output shaft has initiative bevel gear, initiative bevel gear and driven bevel gear dish meshing, be equipped with vertical vibrating device on the initiative bevel gear, sieve bucket one side is equipped with horizontal vibrating device. The invention has the beneficial effects that: rely on automated machine to sieve the grit, improve the engineering quality again when improving screening work efficiency.

Description

Automatic sand and stone screening device for constructional engineering

Technical Field

The invention relates to the field of construction machinery, in particular to an automatic sand and stone screening device for construction engineering.

Background

The building sand comprises the following components: 1. debris sediments formed by rivers, lakes and seas mainly containing quartz particles and a small amount of detritus and mud are called natural sand; 2. the artificial mechanical broken object of hard and non-weathered rock is called machine-made sand; 3. the mixture of the two is called mixed sand. Machine sand and mixed sand are also commonly referred to as artificial sand. The concrete is artificial stone material formed by mixing cement, water, sand and coarse aggregate pebbles and then hardening, wherein the amount of the sand accounts for about 30-60%. In addition, the method is also used for preparing lime-sand bricks and building mortar. The quality and technical requirements of sand as a fine aggregate are as follows: particle composition, mud (stone powder) content and mud block content, fineness modulus, firmness, light material content, alkali-aggregate reaction and methylene blue value.

And in some careful concrete mixes, impurity separation such as stone in the sand often need come out to reach better bonding effect, thereby make final concrete product more firm, all utilize the manual work to shovel into screen cloth sieve sand with gravel and sand usually, however, the sand that this kind of mode was sieved still contains a lot of impurity, lead to easy fracture after the concrete sets, the work efficiency of manual separation sand and impurity is lower moreover, and has increased workman's work burden, influence engineering quality and total project period.

Disclosure of Invention

The invention aims to provide an automatic sand and stone screening device for constructional engineering, which screens sand and stone by means of an automatic machine, improves the screening work efficiency and improves the engineering quality.

In order to achieve the purpose, the invention is realized by the following technical scheme:

the utility model provides an automatic screening plant of gravel and sand for building engineering, includes the bottom plate, be equipped with the bracing piece on the bottom plate, be equipped with slewing mechanism on the bracing piece, the last sieve bucket that is equipped with of slewing mechanism, the card has the screen cloth on the sieve bucket inner wall, it has the feed inlet to open at the sieve bucket top, the last and feed inlet department of sieve bucket is equipped with the fender lid that can open and shut, the fender lid that can open and shut can with the feed inlet lock, the bottom cover of the outer peripheral surface of sieve bucket has driven bevel gear dish, just sieve bucket one side is equipped with the support frame on the bottom plate, be fixed with driving motor through the bolt on the support frame, the end fixing of driving motor's output shaft has initiative bevel gear, initiative bevel gear and driven bevel gear dish meshing, be equipped with vertical vibrating device on the initiative bevel.

Furthermore, the supporting rod is a spring telescopic rod, the vertical vibration device comprises a first connecting rod, the first connecting rod is fixed at the center of the driving bevel gear, a striking plate is fixed at one end, far away from the driving bevel gear, of the first connecting rod, the lengths of two sides of the striking plate, relative to the connecting position of the first connecting rod and the striking plate, are different, and the longer end of the striking plate, relative to the end of the first connecting rod, can be in contact with the bottom surface of the sieve barrel.

Further, the spring telescopic rod comprises a sleeve and a loop bar, the bottom of the sleeve is arranged on the bottom plate, the loop bar is arranged inside the sleeve and is in sliding connection with the sleeve, the cross section of the loop bar is T-shaped, and a spring is arranged between one end of the loop bar, which is located inside the sleeve, and the bottom surface of the loop bar, which is located inside the sleeve.

Further, the outer circumferential surface law of sieve bucket is equipped with a plurality of convex plates, the vertical setting of convex plate, horizontal vibration device includes the dead lever, the dead lever sets up on the bottom plate and is located one side of sieve bucket, dead lever one side is equipped with the baffle, the baffle level sets up, the tip of baffle can contact with the side of convex plate.

Furthermore, the top of the supporting rod penetrates through the rotating mechanism, the bottom of the sieve barrel and the sieve screen to be provided with a second connecting rod, scraping plates are arranged on two sides of the top end of the second connecting rod, the bottom surfaces of the scraping plates are in contact with the surface of the sieve screen, and the length of each scraping plate is 5-10cm smaller than the radius of the sieve screen.

Further, the openable blocking cover comprises a sliding rod and a screw rod, a blocking groove which does not penetrate through the sieve barrel is formed in one side of the feed inlet, the sliding rod and the screw rod are arranged on the blocking groove, a blocking block is arranged on the blocking groove, the blocking block is in threaded connection with the screw rod when in sliding connection with the sliding rod, the bottom of the screw rod is rotatably connected with the blocking groove, and the blocking cover is arranged on one side of the blocking block and the feed inlet.

Furthermore, one side of the stop block, which is close to the blocking cover, is provided with a T-shaped sliding block, the side edge of the blocking cover is provided with a T-shaped sliding groove, and the T-shaped sliding block is connected with the T-shaped sliding groove in a sliding manner.

Compared with the prior art, the invention has the beneficial effects that:

the bottom of the device is provided with a bottom plate, the whole screening device is positioned on a horizontal plane, the normal work of the screening device is ensured, the bottom plate is provided with a support rod, the support rod is provided with a rotating mechanism, the rotating mechanism is provided with a screen barrel, the screen barrel can rotate around a central shaft through the rotating mechanism, the screen barrel is provided with a feed inlet, a sand and stone mixture is filled into the screen barrel through the feed inlet, an openable blocking cover is buckled at the feed inlet to block the feed inlet, the raised dust in the sand screening process is prevented from generating, a driving motor is electrified, a driving bevel gear is driven to rotate through the driving motor, as the driven bevel gear disc is sleeved at the bottom of the outer circumferential surface of the screen barrel and is meshed with the driving bevel gear, the screen barrel can be driven to rotate on the rotating mechanism through the driving motor, the sand and stone mixture can rotate on a screen mesh to achieve the purpose of, sieve bucket one side is equipped with horizontal vibration device, carries out the vibration of vertical direction and horizontal direction to the sieve bucket through above-mentioned two devices, makes the better screening of the inside grit of sieve bucket come out, prevents that the stone of tiny granule from blockking up the screen cloth, improves screening efficiency, guarantees the screening quality.

Drawings

FIG. 1 is a schematic structural diagram of the present invention.

Fig. 2 is a schematic structural diagram of the present invention.

Fig. 3 is a front sectional view of the present invention.

Fig. 4 is an enlarged view of the portion a of fig. 1 of the present invention.

Fig. 5 is an enlarged view of the portion D of fig. 3 of the present invention.

Reference numerals shown in the drawings:

1. a base plate; 2. a support bar; 201. a sleeve; 202. a loop bar; 3. a rotating mechanism; 4. a screen barrel; 5. screening a screen; 6. a feed inlet; 7. a driven bevel gear plate; 8. a support frame; 9. a drive motor; 10. a drive bevel gear; 11. a first connecting rod; 12. striking a board; 13. a spring; 14. a convex plate; 15. fixing the rod; 16. a baffle plate; 17. a second connecting rod; 18. a squeegee; 19. a slide bar; 20. a screw; 21. a baffle groove; 22. a stopper; 23. a blocking cover; 24. a T-shaped slider; 25. t-shaped sliding chutes.

Detailed Description

The invention will be further illustrated with reference to the following specific examples. It should be understood that these examples are for illustrative purposes only and are not intended to limit the scope of the present invention. Further, it should be understood that various changes or modifications of the present invention may be made by those skilled in the art after reading the teaching of the present invention, and these equivalents also fall within the scope of the present application.

The invention relates to an automatic sand and stone screening device for construction engineering, which comprises a main structure, wherein a bottom plate 1 is arranged on the bottom plate 1, a support rod 2 is arranged on the support rod 2, a rotating mechanism 3 is arranged on the support rod 2, the rotating mechanism 3 can be a turntable or a bearing group and mainly plays a role in connecting the end part of the support rod 2 with the bottom surface of a screen barrel 4 and simultaneously rotating the screen barrel 4, the rotating mechanism 3 is provided with the screen barrel 4, the screen barrel 4 is of a cylindrical hollow closed structure, a screen 5 is clamped on the inner wall of the screen barrel 4, the screen 5 is positioned in the middle of the central axis of the screen barrel 4, the screen 5 is clamped on the screen barrel 4 through an annular groove on the inner wall of the screen barrel 4, a feed inlet 6 is arranged at the top of the screen barrel 4, an openable blocking cover is arranged on the screen barrel 4 and at the feed inlet 6 and can be buckled with the feed inlet 6, the openable blocking cover can be, the feeding is convenient, the feeding port 6 can be sealed through the openable blocking cover in the screening process, the flying of stones and the flying of raised dust are prevented, the driven bevel gear disc 7 is welded at the bottom of the outer circumferential surface of the screen barrel 4, the screen barrel 4 can be regarded as penetrating through the whole driven bevel gear disc 7, the supporting frame 8 is arranged on the bottom plate 1 and one side of the screen barrel 4, the driving motor 9 is fixed on the supporting frame 8 through bolts, the driving motor 9 can select a common motor on the market, no specific requirement is made on the type, the end part of the output shaft of the driving motor 9 is fixed with the driving bevel gear 10 through a spline, the driving bevel gear 10 is meshed with the driven bevel gear disc 7, the driving bevel gear 10 is driven by the driving motor 9 to rotate so as to drive the screen barrel 4 integrally fixed with the driven bevel gear disc 7 to rotate, and drive the sand and stone mixture in the screen barrel 4 to roll on the screen mesh 5, screening the grit mixture, be equipped with vertical vibrating device on the initiative bevel gear 10, driving motor 9 conducts vertical vibrating device with power through initiative bevel gear 10, 4 one sides of sieve bucket are equipped with horizontal vibrating device, apply the power of vibration and horizontal vibration about one to sieve bucket 4, prevent that the grit on the screen cloth 5 from piling up, guarantee the finished product quality after screening effect and the screening.

Preferably, the supporting rod 2 is a telescopic spring rod, and can play a certain role in buffering the vertical acting force applied by the vertical vibration device, so as to prevent the sieve barrel 4 from being damaged by vibration, the vertical vibration device includes a first connecting rod 11, one end of the first connecting rod 11 is welded at the center of the drive bevel gear 10, one end of the first connecting rod 11, which is far away from the drive bevel gear 10, is fixed with a striking plate 12, the length of the striking plate 12 is different relative to the two sides of the joint of the first connecting rod 11 and the striking plate 12, the longer end of the striking plate 12 relative to the first connecting rod 11 can be in contact with the bottom surface of the sieve barrel 4, and the end of the striking plate 12 in contact with the bottom surface of the sieve barrel 4 is an arc-shaped head, so that the abrasion of the bottom surface of the contact end of the striking plate 12 and the sieve barrel 4 can be reduced, the service life can be prolonged, and the power of the driving motor 9, thereby drive and hit board 12 and rotate, make and hit board 12 for the longer one end of the installation end of head rod 11 regular hitting sieve barrel 4 bottom surface of beating of the installation end, make sieve barrel 4 vibrate from top to bottom, prevent that the grit on the screen cloth 5 from piling up, guarantee good screening sand effect.

Preferably, the spring telescopic link includes sleeve 201 and loop bar 202, sleeve 201 bottom sets up on bottom plate 1, loop bar 202 set up in sleeve 201 inside and with sleeve 201 sliding connection, loop bar 202 cross-section is the T shape, and the great one end of loop bar 202 diameter is located sleeve 201 inside, and sleeve 201 top opening part is equipped with the annular baffle, cooperates the loop bar 202 tip card in sleeve 201 with the great one end of the diameter of loop bar 202, loop bar 202 is located and is equipped with spring 13 between the bottom surface in sleeve 201 and the inside one end of sleeve 201, plays the effect of buffering to the vibration about vertical vibrating device applys, and protection sieve bucket 4 does not receive the damage, extension fixture's life.

Preferably, a plurality of convex plates 14 are regularly arranged on the outer circumferential surface of the screen barrel 4, the convex plates 14 are vertically arranged, the horizontal vibration device comprises a fixed rod 15, the fixed rod 15 is arranged on the bottom plate 1 and is positioned on one side of the sieve barrel 4 far away from the driving motor 9, a baffle 16 is arranged on one side of the fixed rod 15, the baffle 16 is horizontally arranged, the baffle 16 is made of rubber plates, and is made of soft and elastic materials to prevent the baffle 16 from being damaged due to mutual collision in the contact process with the convex plate 14, the end of the baffle plate 16 can contact with the side surface of the convex plate 14, the convex plate 14 on the outer surface of the screen barrel 4 is continuously contacted with the baffle plate 16 during the rotation of the screen barrel 4, when the screening barrel is in contact with the baffle 16, the baffle 16 separates the convex plate 14 to apply a horizontal impact force to the screening barrel 4, so that the sand on the screen 5 rolls left and right, and the effect of screening the sand is ensured.

Preferably, the top of bracing piece 2 runs through slewing mechanism 3, sieve barrel 4 bottom and screen cloth 5 and is equipped with second connecting rod 17, and is connected through the bearing between bracing piece and slewing mechanism 3, sieve barrel 4 bottom and the screen cloth 5, the top both sides of second connecting rod 17 are equipped with

scraper blade

18, 18 bottom surfaces of scraper blade and screen cloth 5 surface contact, 18 bottom surface cross sections of scraper blade are the toper, conveniently scrape the grit on the screen cloth 5, the length of scraper blade 18 is less than 5-10cm of the radius of screen cloth 5, second connecting

rod

17 and 2 top fixed connection of bracing piece, and self can not take place to rotate, and when sieve barrel 4 rotated, fixed scraper blade 18 will scrape the grit on the screen cloth 5 when sieve barrel 4 rotated, further prevented that the grit from piling up on the screen cloth 5 surface, guaranteed the effect that the grit was sieved.

Preferably, the openable blocking cover comprises a sliding rod 19 and a screw rod 20, a blocking groove 21 which does not penetrate through the sieve barrel 4 is formed in one side of the feed inlet 6, the sliding rod 19 and the screw rod 20 are arranged on the blocking groove 21, the cross section of the sliding rod 19 is rectangular to limit the rotation of the blocking cover 23, a blocking block 22 is arranged on the blocking groove 21, the blocking block 22 is in sliding connection with the sliding rod 19 and is in threaded connection with the screw rod 20, the blocking block 22 is provided with a sliding groove in sliding connection with the sliding rod 19 and a threaded hole in threaded connection with the screw rod 20, the bottom of the screw rod 20 is rotatably connected with the blocking groove 21 through a bearing, the blocking cover 23 is arranged on one side of the blocking block 22 and on the feed inlet 6, the feed inlet 6 and the blocking cover 23 are both rectangular, the thickness of the blocking block 22 is the same as the depth of the blocking groove 21, a limiting effect is achieved on the buckling of the blocking cover 23 and, the surface of the blocking cover 23 is just level with the surface of the sieve barrel 4, the blocking cover 23 is controlled to move up and down by rotating the screw rod 20, so that the feeding hole 6 is opened or closed, the screw thread on the screw rod 20 has self-locking effect on the up-and-down sliding of the stop dog 22, the situation that the blocking cover 23 falls due to self weight after being opened is prevented, and better matching with the feeding hole 6 can be opened and closed.

Preferably, one side of the stop block 22 close to the stop cover 23 is provided with a T-shaped sliding block 24, the side of the stop cover 23 is provided with a T-shaped sliding groove 25, the T-shaped sliding groove 25 does not penetrate through the two side edges of the stop cover, the T-shaped sliding block 24 is connected with the T-shaped sliding groove 25 in a sliding manner, so that the stop cover 23 can slide relative to the stop block 22 after moving upwards through the screw 20, the whole feed inlet 6 is leaked, and feeding is facilitated.

When the sand and stone screening machine is used, the bottom plate 1 is placed at a designated position and leveled, then the support rod 2, the screening barrel 4, the support frame 8, the driving motor 9 and the fixed rod 15 are installed on the bottom plate 1, the screw rod 20 is rotated to enable the blocking cover 23 to move upwards and then slide towards one side of the stop block 22, so that the feeding hole 6 is exposed, sand and stone mixtures are filled into the screening barrel 4, the blocking cover 23 is buckled on the feeding hole 6, the power supply of the driving motor 9 is switched on, the driving motor 9 drives the driving bevel gear 10 and the first connecting rod 11 to rotate, the screening barrel 4 is driven to rotate, the striking plate 12 regularly strikes the bottom of the screening barrel 4 at the same time, the soft baffle 16 is arranged on the fixed rod 15 at one side of the screening barrel 4, the soft baffle 16 is in contact with the convex plate 14 while the screening barrel 4 rotates, a horizontal striking force is applied to the screening barrel 4, so that the sand and stone mixtures on the screen 5 are better in screening effect, and meanwhile, the, further guarantee the screening effect, improve the finished product quality, and improve screening efficiency for the engineering progress.

Claims

1. The utility model provides an automatic screening plant of gravel and sand for building engineering which characterized in that: comprises a bottom plate (1), a support rod (2) is arranged on the bottom plate (1), a rotating mechanism (3) is arranged on the support rod (2), a screen barrel (4) is arranged on the rotating mechanism (3), a screen mesh (5) is clamped on the inner wall of the screen barrel (4), a feed inlet (6) is formed in the top of the screen barrel (4), an openable stop cover is arranged on the screen barrel (4) and at the feed inlet (6), the openable stop cover can be buckled with the feed inlet (6), a driven bevel gear disc (7) is sleeved at the bottom of the outer circumferential surface of the screen barrel (4), a support frame (8) is arranged on the bottom plate (1) and on one side of the screen barrel (4), a driving motor (9) is fixed on the support frame (8) through bolts, a driving bevel gear (10) is fixed at the end part of an output shaft of the driving motor (9), the driving bevel gear (10) is meshed with the driven bevel gear disc (7, the vertical vibration device is arranged on the driving bevel gear (10), and the horizontal vibration device is arranged on one side of the screen barrel (4).

2. The automatic sand and stone screening device for the building engineering according to claim 1, wherein: the utility model discloses a sieve bucket, including bracing piece (2), vertical vibrating device, drive bevel gear (10) and connecting rod (11), bracing piece (2) are spring telescopic rod, vertical vibrating device includes head rod (11), the center department at drive bevel gear (10) is fixed in head rod (11), the one end that drive bevel gear (10) were kept away from in head rod (11) is fixed with hits beater plate (12), hit beater plate (12) for head rod (11) with hit the length difference of hitting the both sides of the junction of beater plate (12), hit beater plate (12) can with sieve bucket (4) bottom surface contact for the longer one end of tip of head rod (11).

3. The automatic sand and stone screening device for the building engineering as claimed in claim 2, wherein: the spring telescopic rod comprises a sleeve (201) and a loop bar (202), the bottom of the sleeve (201) is arranged on the bottom plate (1), the loop bar (202) is arranged inside the sleeve (201) and is in sliding connection with the sleeve (201), the cross section of the loop bar (202) is T-shaped, and a spring (13) is arranged between one end of the loop bar (202) inside the sleeve (201) and the inner bottom surface of the sleeve (201).

4. The automatic sand and stone screening device for the building engineering according to claim 1, wherein: sieve bucket (4) outer circumferential surface law be equipped with a plurality of flange (14), the vertical setting of flange (14), horizontal vibration device includes dead lever (15), dead lever (15) set up on bottom plate (1) and are located one side of sieve bucket (4), dead lever (15) one side is equipped with baffle (16), baffle (16) level sets up, the tip of baffle (16) can be with the side contact of flange (14).

5. The automatic sand and stone screening device for the building engineering according to claim 1, wherein: the top of bracing piece (2) runs through slewing mechanism (3), sieve bucket (4) bottom and screen cloth (5) and is equipped with second connecting rod (17), the top both sides of second connecting rod (17) are equipped with scraper blade (18), scraper blade (18) bottom surface and screen cloth (5) surface contact, the length of scraper blade (18) is less than the radius of screen cloth (5) 5-10 cm.

6. The automatic sand and stone screening device for the building engineering according to claim 1, wherein: the openable blocking cover comprises a sliding rod (19) and a screw rod (20), a blocking groove (21) which does not penetrate through the sieve barrel (4) is formed in one side of the feed inlet (6), the sliding rod (19) and the screw rod (20) are arranged on the blocking groove (21), a blocking block (22) is arranged on the blocking groove (21), the blocking block (22) is in threaded connection with the screw rod (20) when in sliding connection with the sliding rod (19), the bottom of the screw rod (20) is in rotatable connection with the blocking groove (21), and a blocking cover (23) is arranged on one side of the blocking block (22) and on the feed inlet (6).

7. The automatic sand and stone screening device for the building engineering as claimed in claim 6, wherein: one side of the stop block (22) close to the stop cover (23) is provided with a T-shaped sliding block (24), the side edge of the stop cover (23) is provided with a T-shaped sliding groove (25), and the T-shaped sliding block (24) is in sliding connection with the T-shaped sliding groove (25).