A mobile sandstone screening machine

Abstract

The application discloses a mobile sandstone screening machine and relates to the sandstone processing field.The device comprises a base, a sand storage bin, a screening bin, a feeding bin, a screening assembly, a dredging assembly, a smoothing assembly and an auxiliary assembly.The screening mechanism rapidly screens out small-sized sandstone and allows the sandstone to fall into the sand storage bin, and the sandstone in the sand storage bin is smoothed by the smoothing assembly, so that the space utilization of the device is greatly improved, the screen holes and reverse cleaning operation are further cleaned from the bottom of the screen plate under the action of the dredging assembly, the complex operation of cleaning after dismounting by workers is reduced, the working mechanism is timely protected by the turnover mechanism and is not damaged, the service life of the device is effectively prolonged, the whole device is simple to operate, the whole device is highly automated under the action of the auxiliary assembly, and has extremely high practical value.

Description

TECHNICAL FIELD

[0001] The present application relates to the field of sand processing, in particular to a mobile sand screening machine. BACKGROUND

[0002] Sand is the most important resource in the construction industry, and in the construction field, sand is often separated according to particle size, so that sand can be used in different construction processes. Today, sand separation operations in large construction sites have been replaced by machines, and the current screening machine only provides a random screening method, so the existing machine needs to be modified.

[0003] The existing technical solution has the following disadvantages: in the current technology, the screen plate holes are extremely easy to be blocked by sand particles, so it is often necessary to disassemble the screen plate for separate processing or directly replace it, so this processing method is quite complex, and when screening sand, the sand will accumulate into a soil pile inside the device, resulting in excess space in the sand storage area, further reducing the internal space utilization of the device, therefore the present application aims to solve the above problems. SUMMARY

[0004] The technical problem to be solved by the present application is to provide a mobile sand screening machine that can clean the screen plate in time, extend the service life of the screen plate, and maximize the internal space utilization of the device.

[0005] To solve the above technical problems, the technical solution adopted by the present application is as follows: the device comprises a base, a sand storage bin, a screening bin, a feed bin, a screening assembly, a dredging assembly, a smoothing assembly, and an auxiliary assembly. The sand storage bin is arranged above the base, and the smoothing assembly is arranged inside the sand storage bin. The screening bin is arranged above the sand storage bin, and the dredging assembly is arranged inside the screening bin. The dredging assembly is arranged above the screening assembly, and the feed bin is arranged above the screening bin.

[0006] Further, the screening assembly comprises a mounting plate, a fixed plate, a screen plate, a buffer spring, a first motor, a connecting rod, a rocker, and a collection bin. The mounting plate is fixed to the screening bin, and two fixed plates are fixedly arranged on both sides of the mounting plate. The screen plate is slidably arranged on the fixed plate. The screen plate is connected to a plurality of buffer springs at both ends. The other end of the buffer spring is fixed to the fixed plate. A first motor is arranged above the screen plate, and the first motor is fixed to the screening bin. A connecting rod is coaxially fixed to the output shaft of the first motor at one end. A rocker is rotatably arranged on the other end of the connecting rod. The other end of the rocker is rotatably arranged on the screen plate. A collection bin is arranged at the bottom end of the screen plate, and the collection bin is used to collect sand with larger particles.

[0007] Further, the dredging assembly is symmetrically provided with a set on both sides of the screening bin, the dredging assembly comprises a turnover mechanism, a translation mechanism and a working mechanism, the turnover mechanism comprises an electric cylinder, a blocking block, a first H-shaped plate, a connecting plate, a first spring, a double-sided rack, a rotating gear, the electric cylinder is fixed on the mounting plate, the output shaft of the electric cylinder is fixed with the blocking block, the blocking block is slidably installed on the first H-shaped plate, the first H-shaped plate is slidably installed on the connecting plate, the connecting plate is fixed on the mounting plate, the first H-shaped plate and the connecting plate are connected by the first spring, and the first spring is in a compressed state in an initial state, both ends of the first H-shaped plate are fixed with the double-sided rack, both sides of the double-sided rack are engaged with the rotating gear, and the rotating gear is rotatably installed on the mounting plate, and the connecting plate is provided with the translation mechanism.

[0008] Further, the translation mechanism comprises a second H-shaped plate, a second spring, a single-sided rack one, a reversing gear, a single-sided gear two, an L-shaped plate, a third spring and a plate, the second H-shaped plate is slidably installed on the connecting plate, the second H-shaped plate and the connecting plate are connected by the second spring, the second spring is in an initial state, both end points of the second H-shaped plate are fixed with the single-sided rack one, the single-sided rack one is engaged with the reversing gear, the reversing gear is rotatably installed on the mounting plate, the other side of the reversing gear is engaged with the single-sided gear two, the mounting plate is provided with a sliding groove, the single-sided gear two is slidably installed on the sliding groove of the mounting plate, an L-shaped plate is arranged above the single-sided rack one, the single-sided rack one is in contact with the L-shaped plate, the L-shaped plate is slidably installed on the plate, the plate is fixed on the mounting plate, and the L-shaped plate and the plate are connected by the third spring.

[0009] Further, the working mechanism comprises a support, dredging plates, a protection plate, a guide body and a limiting block, the support is fixed on the single-sided gear two, four dredging plates are fixed on the support, the dredging plates are provided with dredging cylinders corresponding to the screen holes on the screen plate, the protection plate is arranged above the dredging plates, the guide body is arranged below the protection plate, the guide body is fixed on the mounting plate, the guide body has a plate gap, the plate gap is used for the passing of sand and stones, one side of the protection plate is fixed with the rotating shaft of the rotating gear, the limiting block is fixed on the L-shaped plate, and the limiting block is used for limiting the sliding of the screen plate.

[0010] Further, the control mechanism comprises a second motor, a protective shell, a driving gear, a sector plate, a first electromagnet, a second electromagnet, an adsorption plate, a driven gear, a direction-changing gear, a gear ring, the protective shell is fixed on the sand storage bin, a second motor is fixed above the protective shell, a driving gear is coaxially fixed on the output shaft of the second motor, the driving gear is rotatably installed on the sand storage bin, the driving gear is engaged with the driven gear, the first electromagnet and the second electromagnet are fixed below the protective shell, the sector plate is fixed below the first electromagnet and the second electromagnet, the sector plate is provided with an arc-shaped groove, the adsorption plate is slidably installed in the groove of the sector plate, the driven gear is rotatably installed at one end of the adsorption plate, the gear ring is rotatably installed on the protective shell, the direction-changing gear is engaged in the gear ring, and the direction-changing gear is rotatably installed on the sand storage bin.

[0011] Further, the control mechanism comprises a second motor, a protective shell, a driving gear, a sector plate, a first electromagnet, a second electromagnet, an adsorption plate, a driven gear, a direction-changing gear, a gear ring, the protective shell is fixed on the sand storage bin, a second motor is fixed above the protective shell, a driving gear is coaxially fixed on the output shaft of the second motor, the driving gear is rotatably installed on the sand storage bin, the driving gear is engaged with the driven gear, the first electromagnet and the second electromagnet are fixed below the protective shell, the sector plate is fixed below the first electromagnet and the second electromagnet, the sector plate is provided with an arc-shaped groove, the adsorption plate is slidably installed in the groove of the sector plate, the driven gear is rotatably installed at one end of the adsorption plate, the gear ring is rotatably installed on the protective shell, the direction-changing gear is engaged in the gear ring, and the direction-changing gear is rotatably installed on the sand storage bin.

[0012] Further, the control mechanism comprises a second motor, a protective shell, a driving gear, a sector plate, a first electromagnet, a second electromagnet, an adsorption plate, a driven gear, a direction-changing gear, a gear ring, the protective shell is fixed on the sand storage bin, a second motor is fixed above the protective shell, a driving gear is coaxially fixed on the output shaft of the second motor, the driving gear is rotatably installed on the sand storage bin, the driving gear is engaged with the driven gear, the first electromagnet and the second electromagnet are fixed below the protective shell, the sector plate is fixed below the first electromagnet and the second electromagnet, the sector plate is provided with an arc-shaped groove, the adsorption plate is slidably installed in the groove of the sector plate, the driven gear is rotatably installed at one end of the adsorption plate, the gear ring is rotatably installed on the protective shell, the direction-changing gear is engaged in the gear ring, and the direction-changing gear is rotatably installed on the sand storage bin.

[0013] Further, the auxiliary mechanism comprises an automatic discharging machine and rollers, the automatic discharging machine is fixed at the bottom end of the sand storage bin and is used for discharging sand and stones, and the rollers are arranged at the bottom of the base in plurality and are used for facilitating the movement of the device to various positions of the construction site.

[0014] The present application has the following advantages compared with the prior art: (1) The present application sets the smoothing assembly to ensure that the sand and stones in the device are not accumulated when stored, to maximize the utilization of the storage space in the device, and to produce different effects of the driving mechanism under the state change of the control mechanism, to ensure the sand and stone smoothing operation on different planes in the device, and to set the rope mechanism to improve the stability of the device, which has simple working principle and is easy to operate; (2) The present application sets the dredging assembly, uses the turnover mechanism to ensure that the sand and stones do not wear the parts in the working mechanism, and further protects the safety of the device, to enhance the service life of the device, uses the lifting mechanism to drive the working mechanism to clean and dredge the screen plate, reduces the cleaning work of the workers, and can dredge the screen plate without dismounting the screen plate, to improve the working efficiency of the device; (3) The present application sets the dredging assembly, under the joint action of the turnover mechanism and the lifting mechanism, preferentially limits the movement of the screen plate, to ensure that the screen plate does not collide with other parts when being dredged, thereby ensuring the safety of the device, and the placement of the auxiliary mechanism enables the device to move to different work sites. BRIEF DESCRIPTION OF DRAWINGS

[0015] Figure 1 is an external structure schematic diagram of a mobile sand and stone screening machine.

[0016] Figure 2 is a structure schematic diagram of a screening assembly.

[0017] Figure 3 is a structure schematic diagram of a dredging assembly.

[0018] Figure 4 is a structure schematic diagram of a turnover mechanism and a lifting mechanism.

[0019] Figure 5 is a structure schematic diagram of a working mechanism.

[0020] Figure 6 is a structure schematic diagram of a first and second few plates.

[0021] Figure 7 is a structure schematic diagram of a guide body.

[0022] Figure 8 is a structure schematic diagram of a smoothing assembly.

[0023] Figure 9 is a structure schematic diagram of a control mechanism.

[0024] Figure 10 is a structural schematic diagram of the worm.

[0025] Figure 11 is a structural schematic diagram of the driving mechanism.

[0026] Figure 12 is a mounting schematic diagram of the moving block and the sliding body.

[0027] Figure 13 is a structural schematic diagram of the rope mechanism.

[0028] Figure 14 is a structural schematic diagram of the auxiliary assembly.

[0029] Reference signs: 1 - base; 2 - sand storage bin; 3 - screening bin; 4 - feeding bin; 101 - mounting plate; 102 - fixed plate; 103 - sieve plate; 104 - buffer spring; 105 - first motor; 106 - connecting rod; 107 - rocker; 108 - collection bin; 201 - electric cylinder; 202 - blocking block; 203 - first H-shaped plate; 204 - connecting plate; 205 - first spring; 206 - double-sided rack; 207 - rotating gear; 301 - second H-shaped plate; 302 - second spring; 303 - single-sided rack I; 304 - reversing gear; 305 - single-sided gear II; 306 - L-shaped plate; 307 - third spring; 308 - plate; 401 - support; 402 - dredging plate; 403 - protection plate; 404 - guide body; 405 - limiting block; 4001 - gap between plates; 501 - second motor; 502 - protection shell; 503 - driving gear; 504 - sector plate; 505 - first electromagnet; 506 - second electromagnet; 507 - adsorption plate; 508 - driven gear; 509 - direction-changing gear; 510 - gear ring; 601 - worm; 602 - worm gear; 603 - bidirectional threaded rod; 604 - moving block; 605 - sliding body; 606 - flattening rod; 607 - sliding rail; 608 - telescopic plate; 609 - collection shell; 701 - first steering column; 702 - second steering column; 703 - third steering column; 704 - rope; 801 - automatic discharging machine; 802 - roller. DETAILED DESCRIPTION

[0030] The technical solutions of the present application will be further illustrated below by specific embodiments in combination with the drawings.

[0031] Wherein, the drawings are only used for exemplary illustration, the representation is only a schematic diagram, not a physical diagram, and cannot be understood as a limitation on the present patent; in order to better illustrate the embodiments of the present application, some components of the drawings will be omitted, enlarged or reduced, and do not represent the size of the actual product; for those skilled in the art, it is understandable that some well-known structures in the drawings and their descriptions can be omitted.

[0032] Example: Figures 1-14 As shown, a mobile sand and gravel screening machine includes a base 1, a sand storage bin 2, a screening bin 3, a feeding bin 4, a screening component, a dredging component, a smoothing component, and auxiliary components. The sand storage bin 2 is located above the base 1. A smoothing component is installed inside the sand storage bin 2. The screening bin 3 is located above the sand storage bin 2. A dredging component is installed inside the screening bin 3. The screening component is located above the dredging component. The feeding bin 4 is located above the screening bin 3.

[0033] The screening assembly includes a mounting plate 101, a fixing plate 102, a screen plate 103, a buffer spring 104, a first motor 105, a connecting rod 106, a rocker arm 107, and a collection bin 108. The mounting plate 101 is fixed to the screening bin 3. Two fixing plates 102 are obliquely fixed on both sides of the mounting plate 101. The screen plate 103 is slidably mounted on the fixing plate 102. Multiple buffer springs 104 are connected to both ends of the screen plate 103. The other end of the buffer springs 104 is fixed to the fixing plate 102. The first motor 105 is located above the screen plate 103 and is fixed to the screening bin 3. One end of the connecting rod 106 is coaxially fixed to the output shaft of the first motor 105. The rocker arm 107 is rotatably mounted on the other end of the connecting rod 106. The other end of the rocker arm 107 is rotatably mounted on the screen plate 103. The collection bin 108 is located at the bottom of the screen plate 103 and is used to collect larger particles of sand and gravel.

[0034] A set of unblocking components is symmetrically arranged on both sides of the screening chamber 3. The unblocking components include a tilting mechanism, a translation mechanism, and a working mechanism. The tilting mechanism includes an electric cylinder 201, a blocking block 202, a first Z-shaped plate 203, a connecting plate 204, a first spring 205, a double-sided rack 206, and a rotating gear 207. The electric cylinder 201 is fixed on the mounting plate 101. The blocking block 202 is fixed on the output shaft of the electric cylinder 201. The first Z-shaped plate 203 is slidably mounted on the blocking block 202. The character plate 203 is slidably mounted on the connecting plate 204, which is fixed on the mounting plate 101. The first character plate 203 and the connecting plate 204 are connected by a first spring 205, which is initially compressed. Both ends of the first character plate 203 are fixed with double-sided racks 206, and both sides of the double-sided racks 206 are meshed with rotating gears 207. The rotating gears 207 are rotatably mounted on the mounting plate 101. A translation mechanism is provided on the connecting plate 204.

[0035] The translation mechanism comprises a second H-shaped plate 301, a second spring 302, a single-sided rack 303, a reversing gear 304, a single-sided gear 305, an L-shaped plate 306, a third spring 307, and a plate 308. The second H-shaped plate 301 is slidingly installed on the connecting plate 204, and the second H-shaped plate 301 and the connecting plate 204 are connected by the second spring 302. The second spring 302 is in an initial state. The two ends of the second H-shaped plate 301 are fixed with the single-sided rack 303. The single-sided rack 303 is engaged with the reversing gear 304. The reversing gear 304 is rotatably installed on the mounting plate 101. The other side of the reversing gear 304 is engaged with the single-sided gear 305. The mounting plate 101 is provided with a sliding groove. The single-sided gear 305 is slidingly installed on the sliding groove of the mounting plate 101. The L-shaped plate 306 is provided above the single-sided rack 303. The single-sided rack 303 is in contact with the L-shaped plate 306. The L-shaped plate 306 is slidingly installed on the plate 308. The plate 308 is fixed on the mounting plate 101. The L-shaped plate 306 and the plate 308 are connected by the third spring 307.

[0036] The working mechanism comprises a support 401, a dredging plate 402, a protection plate 403, a guide body 404, and a limiting block 405. The support 401 is fixed on the single-sided gear 305. Four dredging plates 402 are fixed on the support 401. The dredging plates 402 are provided with dredging cylinders corresponding to the screen holes on the screen plate 103. The protection plate 403 is provided above the dredging plates 402. The guide body 404 is provided below the protection plate 403 and is fixed on the mounting plate 101. The guide body 404 has a gap 4001 between the plates for the passage of sand and stones. One side of the protection plate 403 is fixed with the rotating shaft of the rotating gear 207. The limiting block 405 is fixed on the L-shaped plate 306 and is used to limit the sliding of the screen plate 103.

[0037] The control mechanism comprises a second motor 501, a protection shell 502, a driving gear 503, a sector plate 504, a first electromagnet 505, a second electromagnet 506, an adsorption plate 507, a driven gear 508, a direction-changing gear 509, and a gear ring 510. The protection shell 502 is fixed on the sand storage bin 2. The second motor 501 is fixed above the protection shell 502. The output shaft of the second motor 501 is coaxially fixed with the driving gear 503. The driving gear 503 is rotatably installed on the sand storage bin 2 and is engaged with the driven gear 508. The first electromagnet 505 and the second electromagnet 506 are fixed below the protection shell 502. The sector plate 504 is fixed below the first electromagnet 505 and the second electromagnet 506. The sector plate 504 is provided with an arc-shaped groove. The adsorption plate 507 is slidingly installed in the groove of the sector plate 504. The driven gear 508 is rotatably installed at one end of the adsorption plate 507. The gear ring 510 is rotatably installed on the protection shell 502. The gear ring 510 is engaged with the direction-changing gear 509. The direction-changing gear 509 is rotatably installed on the sand storage bin 2.

[0038] The smoothing assembly comprises a control mechanism, a driving mechanism and a rope mechanism, the driving mechanism comprises a worm 601, a worm wheel 602, a bidirectional threaded rod 603, a moving block 604, a sliding body 605, a smoothing rod 606, a sliding rail 607, an expansion plate 608 and a collection shell 609, the two worms 601 are rotationally installed on the sand storage bin 2, three vertical sliding grooves are arranged on the sand storage bin 2, the worm wheel 602 is arranged between the two worms 601, the worm wheel 602 is meshed with each worm 601, the worm wheel 602 is slidingly installed on the middle sliding groove of the sand storage bin 2, the bidirectional threaded rod 603 is coaxially rotationally installed on the worm wheel 602, the moving block 604 is arranged on the bidirectional threaded rod 603, the sliding body 605 is rotationally installed on the moving block 604, the sliding body 605 is inserted into the annular groove of the bidirectional threaded rod 603, the smoothing rod 606 is rotationally installed at the two ends of the moving block 604, the sliding rail 607 is slidingly installed on the sliding grooves at the two sides of the sand storage bin 2, the smoothing rod 606 is slidingly installed on the sliding rail 607, the expansion plate 608 is rotationally installed at the two ends of the bidirectional threaded rod 603 and the sliding rail 607, the expansion plate 608 is slidingly installed in the collection shell 609, the collection shell 609 is fixed on the inner wall of the sand storage bin 2, and the expansion plate 608 is used for blocking the sliding grooves on the sand storage bin 2 to prevent the sand and stones from falling from the sliding grooves.

[0039] The rope mechanism comprises a first turning column 701, a second turning column 702, a third turning column 703 and a rope 704, the first turning column 701 is arranged directly below one end of the sliding rail 607 close to the worm wheel 602, the first turning column 701 is fixed on the sand storage bin 2, the third turning column 703 and the rope 704 are arranged in the upper and lower positions of the other end of the sliding rail 607 respectively, the third turning column 703 and the rope 704 are fixed on the sand storage bin 2, the third turning column 703 is located above the second turning column 702, one end of the rope 704 is fixed on one end of the sliding rail 607 close to the worm wheel 602, the rope 704 sequentially passes the first turning column 701, the second turning column 702 and the third turning column 703, and finally is connected to the other end of the sliding rail 607 through the third turning column 703.

[0040] The auxiliary mechanism comprises an automatic discharging machine 801 and a plurality of rollers 802, the automatic discharging machine 801 is fixed at the bottom end of the sand storage bin 2, the automatic discharging machine 801 is used for discharging the sand and stones, and the plurality of rollers 802 are arranged on the bottom of the base 1, and the rollers 802 are used for promoting the device to move to various positions of the construction site.

[0041] The working principle of the device is as follows: before the device is operated, the positions of the parts in the device are kept consistent with the positions shown in the figure.

[0042] The sand and stone from the entrance of the feeding bin 4 needs to be started first before entering the first motor 105, the first motor 105 drives the connecting rod 106 to rotate, and the connecting rod 106 is connected with the rocker 107, which finally makes the sieve plate 103 reciprocate on the fixed plate 102. The buffering spring 104 will play a protective role for the sieve plate 103 during the movement of the sieve plate 103. After the sand and stone enters the device, under the action of the sieve plate 103, the large-grained sand and stone will finally fall into the collection bin 108, and the small-grained sand and stone will pass through the sieve hole of the sieve plate 103 and fall down.

[0043] After the fine sand and stone falls down under the guidance of the protection plate 403, it finally flows to the sand storage bin 2 through the inter-plate gap 4001 on the guide body 404. At this time, the first electromagnet 505 is started, so that the first electromagnet 505 adsorbs the adsorption plate 507, and the adsorption plate 507 slides on the sliding groove of the fan-shaped plate 504. Finally, the adsorption plate 507 is disengaged from the meshing of the direction-changing gear 509, and the adsorption plate 507 is meshed with the gear ring 510. At this time, the second motor 501 is driven, so that the driving gear 503 rotates on the protection shell 502, the driving gear 503 drives the driven gear 508 to rotate, and the gear ring 510 rotates on the protection shell 502, and finally drives the direction-changing gear 509 to rotate on the sand storage bin 2. In this state, the rotation directions of the driving gear 503 and the direction-changing gear 509 are opposite, and the rotation directions of the two worms 601 coaxially fixed below the driving gear 503 and the direction-changing gear 509 are opposite. Therefore, the two worms 601 finally drive the worm wheel 602 to rotate. The worm wheel 602 rotates and drives the bidirectional threaded rod 603 to rotate, and under the action of the sliding body 605, the moving block 604 and the flattening rod 606 fixed on the moving block 604 reciprocate on the sliding rail 607. At this time, the flattening rod 606 will perform flattening operation on the accumulated sand and stone, so that the sand and stone fills the space in the sand storage bin 2.

[0044] When the smoothing rod 606 smoothes the sand and stone in the same flatness, stop driving the second motor 501, start the second electromagnet 506, at this time the adsorption plate 507 drives the driven gear 508 to slide on the sliding groove on the sector plate 504, finally the driven gear 508 and the gear ring 510 are disengaged, the driven gear 508 and the direction-changing gear 509 are engaged, at this time drive the second motor 501 again to make the driving gear 503 rotate, and under the action of the driven gear 508, promote the direction-changing gear 509 to rotate, at this time the rotation directions of the driving gear 503 and the direction-changing gear 509 are consistent, and the rotation directions of the two worms 601 are consistent, so that the worm 602 drives the bidirectional threaded rod 603 to slide on the sand storage bin 2 under the interaction of the worm 601, stop driving the second motor 501 after moving a distance, drive the first electromagnet 505 again, then change the position of the driven gear 508, and drive the second motor 501 again, so that the smoothing rod 606 starts the smoothing work in another flatness, until the sand and stone in the device is filled.

[0045] Because there is a sliding groove on the sand storage bin 2, in order to ensure that the sand and stone does not flow out, the bidirectional threaded rod 603 drives the expansion plate 608 to slide on the collection shell 609 when it moves upward, and the expansion plate 608 seals the gap of the sliding groove under the action of the expansion plate 608, and when the worm 602 moves upward, the sliding rail 607 is also driven to slide upward in the sliding groove of the sand storage bin 2 due to the upward and downward movement of the moving block 604 and the smoothing rod 606 to the sliding rail 607, therefore, the expansion plate 608 and the collection shell 609 are also arranged at both ends of the sliding rail 607 to perform gap sealing work.

[0046] When the sliding rail 607 moves upward, it mainly moves upward at the end of the sliding rail 607 close to the first turning column 701 (the force point is biased to this end), therefore, when the sliding rail 607 rises, the rope 704 is driven to move on the first turning column 701, the second turning column 702 and the third turning column 703, so that the levelness of the sliding rail 607 can be ensured not to be affected when the sliding rail 607 rises.

[0047] Under the action of the roller 802, the device can be moved at any position of the construction site, and by controlling the automatic discharging machine 801, the discharge of the sand and stone in the device can be ensured.

[0048] When the sand is sieved, the screen plate 103 is easily blocked due to different particle sizes, so when the cleaning device is cleaned, the electric cylinders 201 on both sides of the screening bin 3 are started at the same time, so that the electric cylinders 201 drive the blocking blocks 202 to move towards the second Chinese character plate 301, at this time, since the first spring 205 is in a compressed state, the first Chinese character plate 203 will slide downwards on the connecting plate 204, and the first Chinese character plate 203 drives the double-sided rack 206 to move, at this time, the double-sided rack 206 drives the rotating gear 207 to rotate on the mounting plate 101, the rotating gear 207 promotes the protective plate 403 to flip, so that the residual sand on the protective plate 403 is sent to the inter-plate gap 4001 on the guide body 404 and falls into the sand storage bin 2.

[0049] Continue to drive the blocking block 202 to move downwards and push the second Chinese character plate 301 to slide on the connecting plate 204, so that the second spring 302 is stretched, and the single-sided rack one 303 on the second Chinese character plate 301 will also move at the same time, at this time, the L plate 306 in contact with the screening bin 3 of the single-sided rack one 303 is forced to slide downwards on the plate 308 due to the initial compression state of the third spring 307, and the limiting block 405 fixed on the L plate 306 will be inserted between the fixed plate 102 and the screen plate 103, thereby limiting the position of the screen plate 103, ensuring that the screen holes on the screen plate 103 and the through holes on the through plate 402 are consistent in position, driving the reversing gear 304 when the single-sided rack one 303 slides downwards, under the action of the reversing gear 304, finally making the single-sided gear two 305 slide upwards on the sliding groove of the mounting plate 101, the bracket 401 fixed on the single-sided gear two 305 will drive the through plate 402 to gradually approach the screen plate 103, and the screen holes of the screen plate 103 are treated by the through plate 402, and finally the output shaft of the electric cylinder 201 is driven to reset, so that other parts will also return to the original position.

Claims

1. A mobile sand screening machine, characterized by: The utility model relates to a sand screening device, including base (1), sand storage bin (2), screening bin (3), feed bin (4), screening assembly, dredging assembly, smoothing assembly, auxiliary assembly, sand storage bin (2) set up above base (1), smoothing assembly is set up in sand storage bin (2) inside, sand storage bin (2) top is provided with screening bin (3), and screening bin (3) is provided with dredging assembly inside, and dredging assembly top is provided with screening assembly, screening bin (3) top is provided with feed bin (4), The smoothing assembly includes a control mechanism, a driving mechanism and a rope mechanism, the driving mechanism includes a worm (601), a worm wheel (602), a bidirectional threaded rod (603), a moving block (604), a sliding body (605), a smoothing rod (606), a sliding rail (607), an expansion plate (608) and a collection shell (609), the worm (601) is provided with two, and the worm (601) is rotatably installed on the sand storage bin (2), the sand storage bin (2) is provided with three vertical sliding grooves, the worm wheel (602) is slidably installed on the middle sliding groove of the sand storage bin (2), and the bidirectional threaded rod (603) is coaxially and rotatably installed on the worm wheel (602), the bidirectional threaded rod (603) is provided with the moving block (604), the moving block (604) is rotatably installed on the sliding body (605), the sliding body (605) is arranged in the annular groove of the bidirectional threaded rod (603), the moving block (604) is provided with the smoothing rod (606) at both ends, the sliding rail (607) is slidably installed on the sliding groove at both sides of the sand storage bin (2), the smoothing rod (606) is slidably installed on the sliding rail (607), the bidirectional threaded rod (603) and the sliding rail (607) are provided with the expansion plate (608) at both ends, the expansion plate (608) is slidably installed in the collection shell (609), the collection shell (609) is fixedly installed on the inner wall of the sand storage bin (2), and the expansion plate (608) is used for blocking the sliding groove on the sand storage bin (2) to prevent sand and stones from falling off from the sliding groove, The screening assembly comprises a mounting plate (101), a fixed plate (102), a screen plate (103), a buffer spring (104), a first motor (105), a connecting rod (106), a rocker (107), a collection bin (108), the mounting plate (101) is arranged on the screening bin (3), two fixed plates (102) are arranged on the two sides of the mounting plate (101) and are inclinedly fixed, the screen plate (103) is slidably arranged on the fixed plate (102), a plurality of buffer springs (104) are arranged at the two ends of the screen plate (103), the other ends of the buffer springs (104) are arranged on the fixed plate (102), the first motor (105) is arranged above the screen plate (103), the first motor (105) is fixed on the screening bin (3), one end of the connecting rod (106) is coaxially fixed on the output shaft of the first motor (105), the rocker (107) is rotatably arranged on the other end of the connecting rod (106), the other end of the rocker (107) is rotatably arranged on the screen plate (103), the collection bin (108) is arranged at the bottom end of the screen plate (103), and the collection bin (108) is used for collecting large sand and stones; The dredging assembly is symmetrically arranged on the two sides of the screening bin (3), the dredging assembly comprises a turnover mechanism, a translation mechanism and a working mechanism, the turnover mechanism comprises a blocking block (202), a first H-shaped plate (203), a connecting plate (204), a first spring (205), a double-sided rack (206) and a rotating gear (207), the first H-shaped plate (203) is slidably arranged on the blocking block (202), the first H-shaped plate (203) is slidably arranged on the connecting plate (204), the connecting plate (204) is arranged on the mounting plate (101), the first H-shaped plate (203) and the connecting plate (204) are connected by the first spring (205), and the first spring (205) is in a compressed state in an initial state, the double-sided rack (206) is arranged at the two ends of the first H-shaped plate (203), the double-sided rack (206) is meshed with the rotating gear (207) on the two sides, and the rotating gear (207) is rotatably arranged on the mounting plate (101), and the translation mechanism is arranged on the connecting plate (204).

2. A mobile sand screening machine according to claim 1, characterized in that: The translation mechanism includes a second V-shaped plate (301), a second spring (302), a single-sided rack (303), a reversing gear (304), a single-sided gear (305), an L-shaped plate (306), a third spring (307), a plate (308), the connecting plate (204) is slidably installed with the second V-shaped plate (301), the second V-shaped plate (301) and the connecting plate (204) are connected by the second spring (302), the second spring (302) is in an initial state, the second V-shaped plate (301) is provided with the single-sided rack (303) at both ends, the single-sided rack (303) is engaged with the reversing gear (304), the reversing gear (304) is rotatably installed on the mounting plate (101), the reversing gear (304) is engaged with the single-sided gear (305) on the other side, the mounting plate (101) is provided with a sliding groove, the single-sided gear (305) is slidably installed on the sliding groove of the mounting plate (101), the single-sided rack (303) is provided with the L-shaped plate (306) above, the single-sided rack (303) is in contact with the L-shaped plate (306), the L-shaped plate (306) is slidably installed on the plate (308), the plate (308) is fixed on the mounting plate (101), and the L-shaped plate (306) and the plate (308) are connected by the third spring (307).

3. A mobile sand screening machine according to claim 2, characterised in that: The working mechanism includes a support (401), a dredging plate (402), a protection plate (403), a guide body (404), and a limiting block (405), the support (401) is fixed on the single-sided gear (305), the support (401) is provided with four dredging plates (402), the dredging plate (402) is provided with a dredging cylinder corresponding to the sieve hole on the sieve plate (103), the protection plate (403) is arranged above the dredging plate (402), the guide body (404) is arranged below the protection plate (403), the guide body (404) is fixed on the mounting plate (101), one side of the protection plate (403) is fixed with the rotating shaft of the rotating gear (207), the limiting block (405) is fixed on the L-shaped plate (306), and the limiting block (405) is used for limiting the sliding of the sieve plate (103).

4. A mobile sand screening machine according to claim 1, characterized in that: The control mechanism comprises a protective shell (502), a driving gear (503), a sector plate (504), a first electromagnet (505), a second electromagnet (506), an adsorption plate (507), a driven gear (508), a direction-changing gear (509), and a gear ring (510), the driving gear (503) is rotatably installed on the sand storage bin (2), the driving gear (503) is engaged with the driven gear (508), the first electromagnet (505) and the second electromagnet (506) are fixed below the protective shell (502), the sector plate (504) is fixed below the first electromagnet (505) and the second electromagnet (506), the sector plate (504) is provided with an arc-shaped groove, the adsorption plate (507) is slidably installed in the groove of the sector plate (504), and the driven gear (508) is rotatably installed at one end of the adsorption plate (507), the gear ring (510) is rotatably installed on the protective shell (502), the direction-changing gear (509) is engaged in the gear ring (510), and the direction-changing gear (509) is rotatably installed on the sand storage bin (2).

5. A mobile sand screening machine according to claim 1, characterized in that: The rope mechanism comprises a first steering column (701), a second steering column (702), a third steering column (703), and a rope (704), the first steering column (701) is arranged directly below one end of the sliding rail (607) close to the worm gear (602), the first steering column (701) is fixed on the sand storage bin (2), the third steering column (703) and the rope (704) are arranged in two positions on the other end of the sliding rail (607), the third steering column (703) and the rope (704) are both fixed on the sand storage bin (2), the third steering column (703) is located above the second steering column (702), one end of the rope (704) is fixed on one end of the sliding rail (607) close to the worm gear (602), the rope (704) sequentially passes the first steering column (701), the second steering column (702), and the third steering column (703), and is finally connected to the other end of the sliding rail (607) through the third steering column (703).

6. A mobile sand screening machine according to claim 1, characterized in that: The auxiliary assembly comprises an automatic discharging machine (801) and rollers (802), the automatic discharging machine (801) is arranged at the bottom end of the sand storage bin (2), and is used for discharging sand and stones, and a plurality of rollers (802) are arranged at the bottom of the base (1), and are used for facilitating movement of the device to various positions of a construction site.

Images