CN209772702U - Sand and stone screening device's support body unit structure - Google Patents
Sand and stone screening device's support body unit structure Download PDFInfo
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- CN209772702U CN209772702U CN201920372784.9U CN201920372784U CN209772702U CN 209772702 U CN209772702 U CN 209772702U CN 201920372784 U CN201920372784 U CN 201920372784U CN 209772702 U CN209772702 U CN 209772702U
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Abstract
The utility model discloses a frame body unit structure of a sand and stone screening device, which comprises an upper rectangular frame and a lower rectangular frame which are vertically arranged at intervals; the device is characterized in that four corners of the upper rectangular frame are respectively fixedly connected with an upper connecting rod which faces downwards vertically, and four corners of the lower rectangular frame are respectively fixedly connected with a lower connecting rod which faces upwards vertically; a vertical spring mechanism is arranged between the upper connecting rod and the lower connecting rod which are opposite to each other, and the upper working end and the lower working end of the spring mechanism are respectively connected with the upper connecting rod and the lower connecting rod and provide vertical push-pull acting force; and a vibration device is correspondingly arranged on the frame body unit. The utility model has the advantages of saving human cost that can be better improves grit screening efficiency.
Description
Technical Field
The utility model belongs to the technical field of construction machinery equipment, especially, relate to a grit sieving mechanism's support body unit structure.
Background
Treatment of soft foundations, also calledSoft foundation treatmentIf the foundation is not firm enough before construction, in order to prevent accidents such as unstable buildings caused by sinking and pulling crack of the foundation after construction, the soft foundation needs to be treated, so that the settlement of the soft foundation becomes firm enough, and the consolidation degree and stability of the soft foundation are improved to meet the design requirements.
The step of throwing stones and squeezing silt is to throw a certain amount of broken stones from the middle part to two sides of the roadbed bottom, and squeeze silt out of the roadbed range so as to improve the roadbed strength. The used gravels are preferably large stones which are not easy to efflorescence, and the size is generally not less than 0.15 m. The process mainly has the following problems in the construction process: because the particle size of the raw materials is not uniformly distributed, cavities are easy to generate, the cavities cannot be absolutely dense, the construction quality is reduced, and sedimentation is easy to generate in the later period, particularly in areas with abundant underground water. Therefore, in the construction, it is necessary to use the raw materials by classifying them into different particle sizes.
The existing equipment is used for screening and classifying raw materials according to particle sizes, but the equipment is complex in structure, high in manufacturing cost and use cost and inconvenient to use. If the raw materials are manually screened and classified according to the particle size, the method is time-consuming and labor-consuming.
Therefore, the applicant designs a sand screening device which comprises a frame body in a rectangular structure integrally, and is characterized in that the frame body comprises one or more frame body units in a rectangular structure integrally; the frame body units are stacked in the vertical direction, and the opposite end faces are connected; the frame body units are respectively internally provided with a screen mesh which is integrally in a flat plate structure, and the apertures of the screen meshes in the vertical downward direction are sequentially reduced; and each screen cloth all is the slope and sets up downwards, and the side relative with the screen cloth lower extreme on the support body unit is open structure in order to form the grit export, the grit export is used for holding putting into the mouth with the grit and links up.
However, in the actual use process, the shape of the sand to be screened is irregular, and when the device screens the sand, the problem that when the sand falls onto the corresponding screen, part of the sand cannot roll along the inclined direction of the screen even under the action of the gravity of the sand; when some sandstone passes through the sieve holes of the screen, the sandstone is blocked due to the small aperture difference between the sandstone and the sieve holes. When the above problem takes place, just need shut down, then the manual adoption instrument of staff promotes corresponding grit, causes to waste time and energy, has reduced grit screening efficiency. How can be better avoid the grit screening process in, how can be better practice thrift the human cost, improve grit screening efficiency, become the technical problem that further needs solved.
SUMMERY OF THE UTILITY MODEL
To the not enough of above-mentioned prior art, the utility model aims to solve the technical problem that: how to provide a saving human cost that can be better, improve grit screening efficiency's grit sieving mechanism's support body unit structure.
In order to solve the technical problem, the utility model discloses a following technical scheme:
A frame body unit structure of a sand and stone screening device comprises an upper rectangular frame and a lower rectangular frame which are vertically arranged at intervals; the device is characterized in that four corners of the upper rectangular frame are respectively fixedly connected with an upper connecting rod which faces downwards vertically, and four corners of the lower rectangular frame are respectively fixedly connected with a lower connecting rod which faces upwards vertically; a vertical spring mechanism is arranged between the upper connecting rod and the lower connecting rod which are opposite to each other, and the upper working end and the lower working end of the spring mechanism are respectively connected with the upper connecting rod and the lower connecting rod and provide vertical push-pull acting force; and a vibration device is correspondingly arranged on the frame body unit.
Therefore, after the corresponding screen in the frame body unit is impacted by the gravity of the gravel, the upper connecting rods and the lower connecting rods which correspond to the upper rectangular frame and the lower rectangular frame are connected through the vertical spring mechanisms, so that the upper connecting rods and the lower connecting rods which correspond to the upper rectangular frame and the lower rectangular frame can vertically reciprocate and generate vertical vibration; and the sand on the screen can better roll along the inclined direction of the screen; thereby reach the advantage of practicing thrift the manpower, improving screening efficiency.
Preferably, the vibration device comprises two vibration motors which are connected and fixed on the side face, perpendicular to the gravel outlet, of the frame body unit in a one-to-one correspondence manner.
Therefore, the vibration device adopts the vibration motor and has the advantage of simple structure. During specific implementation, the vibration motors can be correspondingly arranged on each frame body unit, and the vibration motor can also be correspondingly arranged on one frame body unit.
As optimization, be connected with vertical mounting panel between last rectangle frame and the rectangle frame down, vibrating motor installs and fixes on the mounting panel.
Like this, simple structure can make things convenient for vibrating motor's installation fixed.
As optimization, a first connecting block and a second connecting block which are horizontal and are arranged at intervals along the vertical direction are fixedly connected at the lower end of the upper connecting rod; the upper end of the lower connecting rod is fixedly connected with a third connecting block and a fourth connecting block which are horizontal and are arranged at intervals along the vertical direction; the spring mechanism comprises a vertical spiral spring; the upper end of the spiral spring penetrates through the abdicating hole on the second connecting block and is connected to the lower surface of the first connecting block; the lower end of the spiral spring penetrates through the abdicating hole in the third connecting block and is connected to the upper surface of the fourth connecting block; a vertical guide rod is further arranged in the spiral spring, the upper end of the guide rod penetrates through a guide hole in the first connecting block and extends upwards to the upper side of the upper surface of the first connecting block, and the lower end of the guide rod penetrates through a guide hole in the fourth connecting block and extends downwards to the lower side of the lower surface of the fourth connecting block; and be equipped with limit structure respectively at the upper end and the lower extreme of guide bar, the butt that limit structure's work end corresponds supports in first connecting block upper surface and fourth connecting block lower surface to the vertical removal of restriction guide bar.
Thus, the structure of the spring mechanism is simpler. When in use, the vertical movement range can be well limited; and through setting up coil spring for above-mentioned device is when using, and the grit is put into the back from the top, and after coil spring atress, can make the screen cloth that corresponds reciprocate vertically, and produce the vibration of vertical direction, and the design is more reasonable.
Preferably, the guide rod is of a hollow pipe structure; the limiting structure comprises a vertical threaded rod arranged in the guide rod, and two ends of the threaded rod respectively exceed the upper end surface and the lower end surface of the guide rod; an upper adjusting nut and a lower adjusting nut are respectively connected to the upper end surface and the lower end surface of the upper end and the lower end of the threaded rod at intervals through threads of the upper end surface and the lower end surface of the guide rod; the lower end surface of the upper adjusting nut is fixedly connected with an upper adjusting pipe which is arranged downwards, the upper adjusting pipe can be sleeved at the upper end of the connecting rod in a vertically sliding mode, and the lower end surface of the upper adjusting pipe is abutted and supported on the upper surface of the first connecting plate; the upper end face of the lower adjusting nut is fixedly connected with a lower adjusting pipe which is arranged upwards, the lower adjusting pipe can be sleeved at the lower end of the connecting rod in a vertically sliding mode, and the upper end face of the lower adjusting pipe is supported on the lower surface of the fourth connecting plate in an abutting mode.
Like this, when screening the grit, the particle size range of grit is different, and the reciprocating motion and the vibration that produce in the vertical direction of its needs are different, and above-mentioned device can reach the grit to different scope particle sizes through the screen cloth that uses different apertures and screen. However, how to make the frame unit suitable for screening sand with different particle sizes becomes another technical problem to be solved. Adjusting nut and adjusting nut are gone up with the promotion that corresponds with adjusting pipe and lower adjusting pipe down through the adjustment, can compress coil spring for its adaptation that can be better screens the grit of different scope particle diameters, makes the adaptability of whole device stronger, facilitates the use more, has still reduced its use cost.
As optimization, the upper connecting rod and the lower connecting rod are both vertically arranged angle steel structures; the first connecting block and the second connecting block are welded on the right-angle inner side of the upper connecting rod; the third connecting block and the fourth connecting block are both welded on the right-angle inner side of the lower connecting rod.
Therefore, the structure is simpler, and the whole device is convenient to process and manufacture.
Preferably, the coil springs comprise a first coil spring, a second coil spring and a third coil spring which are coaxially arranged and vertically stacked.
Thus, the first coil spring, the second coil spring, and the third coil spring are provided; opposite end parts of the first spiral spring, the second spiral spring and the third spiral spring are connected, and the elastic coefficients are arranged in an unequal manner; make whole design more reasonable, can be better produce the vibration in vertical.
As optimization, a first gasket and a second gasket are respectively arranged between the first spiral spring and the second spiral spring and between the second spiral spring and the third spiral spring, and the first gasket and the second gasket are respectively sleeved on the guide rod in a vertically sliding manner; the lower end of the first spiral spring and the upper end of the second spiral spring are respectively supported on the upper surface and the lower surface of the first gasket in an abutting mode; the lower end of the second coil spring and the upper end of the third coil spring are supported in abutment against the upper surface and the lower surface of the second spacer, respectively.
Like this, the design is more reasonable, can make things convenient for first coil spring, second coil spring and third coil spring's connection more.
Preferably, the diameters of the first gasket and the second gasket are smaller than the diameters of the yielding holes in the second connecting block and the third connecting block.
Thus, the design is more reasonable.
Drawings
Fig. 1 is a front view (only a group of vibration motors is shown) of a concrete embodiment of the sand screening device using the structure of the present invention.
Fig. 2 is a right side view of fig. 1.
Fig. 3 is a top view of fig. 1.
Fig. 4 is a schematic structural view of the screen of fig. 1.
Fig. 5 is a schematic structural view of a portion of the spring mechanism of fig. 1.
Detailed Description
The present invention will be described in further detail with reference to the accompanying drawings of a sand and stone screening apparatus using the structure of the present invention.
In the specific implementation: as shown in fig. 1 to 5, a sand screening device comprises a frame body 1 which is of a rectangular structure as a whole, wherein the frame body comprises one or more frame body units 2 which are of a rectangular structure as a whole; the frame body units 2 are stacked in the vertical direction, and the opposite end faces are connected; the frame body units 2 are respectively internally provided with a screen 3 which is integrally in a flat plate-shaped structure, and the apertures of the screen 3 in the vertical downward direction are sequentially reduced; and each screen cloth 3 all is the slope and sets up downwards, and the side relative with the screen cloth lower extreme on the support body unit 2 is open structure in order to form the grit export, the grit export is used for holding putting into the mouth with the grit and links up.
Thus, when the sand and stone screening device is used, sand and stone to be screened are placed into the uppermost frame body unit only by manpower or by adopting a transmission device, when the sand and stone are placed on the screen corresponding to the corresponding frame body unit, the screen is obliquely arranged, the sand and stone can roll on the screen under the action of the gravity of the sand and stone, the particle size of the sand and stone is smaller than the aperture of the corresponding screen in the rolling process, the sand and stone fall onto the screen corresponding to the next frame body unit from the screen aperture of the screen, and the sand and stone which do not fall off slide out from the sand and stone outlet corresponding to the obliquely downward end of the screen and are correspondingly collected in the sand and stone containing device; the gravel falling into the next frame body unit continues to be screened. The device has the advantages of convenient operation in the using process, simple structure, low use cost and low labor input; and can conveniently screen the sandstone with various particle sizes.
In this embodiment, the frame unit 2 includes an upper frame unit 4, a middle frame unit 5 and a lower frame unit 6 vertically stacked; the screen 3 comprises an upper screen 7, a middle screen 8 and a lower screen 9 which are sequentially and correspondingly arranged in the upper layer frame unit, the middle layer frame unit and the lower layer frame unit; the apertures of the upper layer screen, the middle layer screen and the lower layer screen are arranged in a decreasing manner.
In this way, the upper layer frame body unit, the middle layer frame body unit and the lower layer frame body unit are vertically arranged in a stacked manner; the upper layer screen, the middle layer screen and the lower layer screen are correspondingly arranged, and the aperture of the upper layer screen, the aperture of the middle layer screen and the aperture of the lower layer screen are sequentially reduced; can screen the grit that obtains four kinds of different particle diameters, it is more reasonable to design, satisfying the user demand that can be better.
In the specific embodiment, the lower end of the upper screen 7 is arranged right opposite to the front side or the rear side of the frame body; the lower end of the middle layer screen mesh 8 and the lower end of the lower layer screen mesh 9 are arranged corresponding to the left side surface and the right side surface of the frame body one by one.
Thus, the lower end of the upper-layer screen is arranged right opposite to the front side surface or the rear side surface of the frame body; the lower end of the middle layer screen and the lower end of the lower layer screen are arranged in a one-to-one correspondence with the left side surface and the right side surface of the frame body; make the three grit export orientation different position that corresponds, can conveniently set up the grit more and hold the device, the overall arrangement design is more reasonable.
In the specific embodiment, the lower end of the upper-layer screen 7 is arranged right opposite to the front side surface of the frame body; the lower end of the middle layer screen 8 and the lower end of the lower layer screen 9 are arranged corresponding to the left side surface and the right side surface of the frame body in sequence.
Like this, it is more reasonable to design, can conveniently arrange grit more and hold the device.
In this embodiment, the screen 3 includes a support frame 10 having a rectangular frame structure, the screen structure is disposed inside the support frame, the screen structure includes one or more transverse pull ropes 11 disposed at a longitudinal interval and one or more longitudinal pull ropes 12 disposed at a transverse interval, and the transverse pull ropes and the longitudinal pull ropes are overlapped to form a continuous lattice shape.
Like this, the structure of screen cloth is simpler, can more pertinence change the screen cloth, reduces the use cost of whole device. During specific implementation, the longitudinal pull rope and the transverse pull rope can be made of steel bars.
In the present embodiment, the transverse pulling ropes 11 and the longitudinal pulling ropes 12 are both of a steel wire rope structure.
Like this, be the steel wire rope structure with horizontal stay cord and vertical stay cord, have certain cushioning effect, design more rationally.
In this embodiment, the supporting frame 10 includes two transverse supporting rods 13 and two longitudinal supporting rods 14; and the two transverse supporting rods and the two longitudinal supporting rods are connected to form a rectangular frame structure.
Thus, the structure is simpler, and the design is more reasonable.
In this embodiment, the frame unit 2 includes an upper rectangular frame 15 and a lower rectangular frame 16 vertically disposed at an interval; vertical downward upper connecting rods 17 are respectively connected and fixed at four corners of the upper rectangular frame, and vertical upward lower connecting rods 18 are respectively connected and fixed at four corners of the lower rectangular frame; a vertical spring mechanism is arranged between the upper connecting rod and the lower connecting rod which are opposite to each other, and the upper working end and the lower working end of the spring mechanism are respectively connected with the upper connecting rod and the lower connecting rod and provide vertical push-pull acting force; the frame body unit is correspondingly provided with a vibration device.
In the actual use process, the shape of the sandstone needing to be screened is irregular, and when the device with the structure is used for screening the sandstone, the following problems exist, when the sandstone falls onto the corresponding screen, part of the sandstone can not roll along the inclined direction of the screen even under the action of the gravity of the part of the sandstone; when some sandstone passes through the sieve holes of the screen, the sandstone is blocked due to the small aperture difference between the sandstone and the sieve holes. When the above problem takes place, just need shut down, then the manual adoption instrument of staff promotes corresponding grit, causes to waste time and energy, has reduced grit screening efficiency.
Therefore, after the corresponding screen in the frame body unit is impacted by the gravity of the gravel, the upper connecting rods and the lower connecting rods which correspond to the upper rectangular frame and the lower rectangular frame are connected through the vertical spring mechanisms, so that the upper connecting rods and the lower connecting rods which correspond to the upper rectangular frame and the lower rectangular frame can vertically reciprocate and generate vertical vibration; and the sand on the screen can better roll along the inclined direction of the screen; thereby reach the advantage of practicing thrift the manpower, improving screening efficiency. During the concrete implementation, the lower extreme of screen cloth is articulated on rectangle frame down, and can rotate on vertical, and the upper end of screen cloth is the overlap joint on last rectangle frame, can make the better production vibration of screen cloth like this.
In this specific embodiment, the vibration device includes two vibration motors 19, and the vibration motors are connected and fixed on a group of perpendicular side of grit export on the support body unit in one-to-one correspondence.
Therefore, the vibration device adopts the vibration motor and has the advantage of simple structure. During specific implementation, the vibration motors can be correspondingly arranged on each frame body unit, and the vibration motor can also be correspondingly arranged on one frame body unit.
In the present embodiment, a vertical mounting plate 20 is connected between the upper rectangular frame 15 and the lower rectangular frame 16, and the vibration motor 19 is fixedly mounted on the mounting plate.
like this, simple structure can make things convenient for vibrating motor's installation fixed.
In the present embodiment, the lower end of the upper connecting rod 17 is fixedly connected with a first connecting block 21 and a second connecting block 22 which are horizontal and vertically arranged at intervals; the upper end of the lower connecting rod 18 is fixedly connected with a third connecting block 23 and a fourth connecting block 24 which are horizontal and are arranged at intervals along the vertical direction; the spring mechanism comprises a vertical coil spring 25; the upper end of the spiral spring 25 passes through the abdicating hole on the second connecting block 22 and is connected on the lower surface of the first connecting block 21; the lower end of the spiral spring 25 passes through the abdicating hole on the third connecting block 23 and is connected on the upper surface of the fourth connecting block 24; a vertical guide rod 26 is further arranged in the spiral spring, the upper end of the guide rod 26 penetrates through a guide hole in the first connecting block and extends upwards to the upper side of the upper surface of the first connecting block, and the lower end of the guide rod 26 penetrates through a guide hole in the fourth connecting block and extends downwards to the lower side of the lower surface of the fourth connecting block; and be equipped with limit structure respectively at the upper end and the lower extreme of guide bar, the butt that limit structure's work end corresponds supports in first connecting block upper surface and fourth connecting block lower surface to the vertical removal of restriction guide bar.
Thus, the structure of the spring mechanism is simpler. When in use, the vertical movement range can be well limited; and through setting up coil spring for above-mentioned device is when using, and the grit is put into the back from the top, and after coil spring atress, can make the screen cloth that corresponds reciprocate vertically, and produce the vibration of vertical direction, and the design is more reasonable.
In this embodiment, the guide rod 26 has a hollow tube structure; the limiting structure comprises a vertical threaded rod 27 arranged inside the guide rod, and two ends of the threaded rod 27 respectively exceed the upper end surface and the lower end surface of the guide rod; and the upper end and the lower end of the threaded rod are respectively connected with an upper adjusting nut 28 and a lower adjusting nut 29 by threads at the upper end surface and the lower end surface of the guide rod 26; an upper adjusting pipe 30 which is arranged downwards is fixedly connected to the lower end face of the upper adjusting nut, the upper adjusting pipe can be sleeved at the upper end of the connecting rod in a vertically sliding mode, and the lower end face of the upper adjusting pipe is abutted and supported on the upper surface of the first connecting plate; the upper end face of the lower adjusting nut is fixedly connected with a lower adjusting pipe 31 which is arranged upwards, the lower adjusting pipe can be sleeved at the lower end of the connecting rod in a vertically sliding mode, and the upper end face of the lower adjusting pipe is supported on the lower surface of the fourth connecting plate in an abutting mode.
Like this, when screening the grit, the particle size range of grit is different, and the reciprocating motion and the vibration that produce in the vertical direction of its needs are different, and above-mentioned device can reach the grit to different scope particle sizes through the screen cloth that uses different apertures and screen. However, how to make the frame unit suitable for screening sand with different particle sizes becomes another technical problem to be solved. Adjusting nut and adjusting nut are gone up with the promotion that corresponds with adjusting pipe and lower adjusting pipe down through the adjustment, can compress coil spring for its adaptation that can be better screens the grit of different scope particle diameters, makes the adaptability of whole device stronger, facilitates the use more, has still reduced its use cost.
In the present embodiment, the upper connecting rod 17 and the lower connecting rod 18 are both vertically arranged angle steel structures; the first connecting block 21 and the second connecting block 22 are welded and connected to the inner side of the right angle of the upper connecting rod; and the third connecting block 23 and the fourth connecting block 24 are welded on the right-angle inner side of the lower connecting rod.
Therefore, the structure is simpler, and the whole device is convenient to process and manufacture.
In the present embodiment, the coil spring 25 includes a first coil spring 32, a second coil spring 33, and a third coil spring 34, which are coaxially disposed and vertically stacked.
Thus, the first coil spring, the second coil spring, and the third coil spring are provided; opposite end parts of the first spiral spring, the second spiral spring and the third spiral spring are connected, and the elastic coefficients are arranged in an unequal manner; make whole design more reasonable, can be better produce the vibration in vertical.
In the present embodiment, a first gasket and a second gasket are respectively disposed between the first coil spring 32 and the second coil spring 33, and between the second coil spring 33 and the third coil spring 34, and the first gasket and the second gasket are respectively sleeved on the guide rod in a vertically slidable manner; the lower end of the first spiral spring and the upper end of the second spiral spring are respectively supported on the upper surface and the lower surface of the first gasket in an abutting mode; the lower end of the second coil spring and the upper end of the third coil spring are supported in abutment against the upper surface and the lower surface of the second spacer, respectively.
Like this, the design is more reasonable, can make things convenient for first coil spring, second coil spring and third coil spring's connection more.
In this specific embodiment, the diameters of the first gasket and the second gasket are smaller than the diameters of the yielding holes in the second connecting block and the third connecting block.
Thus, the design is more reasonable.
Claims (9)
1. A frame body unit structure of a sand screening device comprises an upper rectangular frame (15) and a lower rectangular frame (16) which are vertically arranged at intervals; the device is characterized in that four corners of the upper rectangular frame are respectively fixedly connected with an upper connecting rod (17) which faces downwards vertically, and four corners of the lower rectangular frame are respectively fixedly connected with a lower connecting rod (18) which faces upwards vertically; a vertical spring mechanism is arranged between the upper connecting rod and the lower connecting rod which are opposite to each other, and the upper working end and the lower working end of the spring mechanism are respectively connected with the upper connecting rod and the lower connecting rod and provide vertical push-pull acting force; and a vibration device is correspondingly arranged on the frame body unit.
2. A frame unit structure of a sand screening apparatus according to claim 1, characterized in that the vibration means comprises two vibration motors (19) connected and fixed one by one to a group of sides of the frame unit perpendicular to the sand outlet.
3. A frame unit structure of a sand screening apparatus according to claim 2, characterized in that a vertical mounting plate (20) is connected between the upper rectangular frame (15) and the lower rectangular frame (16), and the vibration motor (19) is fixedly mounted on the mounting plate.
4. A frame unit structure of a sand screening apparatus according to claim 1, wherein the lower end of the upper connecting rod (17) is fixedly connected with a first connecting block (21) and a second connecting block (22) which are horizontally arranged and vertically arranged at intervals; the upper end of the lower connecting rod (18) is fixedly connected with a third connecting block (23) and a fourth connecting block (24) which are horizontal and are arranged at intervals along the vertical direction; the spring mechanism comprises a vertical spiral spring (25); the upper end of the spiral spring (25) passes through the abdicating hole on the second connecting block (22) and is connected on the lower surface of the first connecting block (21); the lower end of the spiral spring (25) passes through the abdicating hole on the third connecting block (23) and is connected on the upper surface of the fourth connecting block (24); a vertical guide rod (26) is further arranged in the spiral spring, the upper end of the guide rod (26) penetrates through a guide hole in the first connecting block and extends upwards to the position above the upper surface of the first connecting block, and the lower end of the guide rod (26) penetrates through a guide hole in the fourth connecting block and extends downwards to the position below the lower surface of the fourth connecting block; and be equipped with limit structure respectively at the upper end and the lower extreme of guide bar, the butt that limit structure's work end corresponds supports in first connecting block upper surface and fourth connecting block lower surface to the vertical removal of restriction guide bar.
5. A sand screening apparatus frame unit construction as claimed in claim 4, characterised in that the guide rods (26) are of hollow tubular construction; the limiting structure comprises a vertical threaded rod (27) arranged inside the guide rod, and two ends of the threaded rod (27) respectively exceed the upper end surface and the lower end surface of the guide rod; an upper adjusting nut (28) and a lower adjusting nut (29) are respectively connected to the upper end surface and the lower end surface of the upper end and the lower end of the threaded rod at intervals of the guide rod (26); an upper adjusting pipe (30) which is arranged downwards is fixedly connected to the lower end face of the upper adjusting nut, the upper adjusting pipe can be sleeved at the upper end of the connecting rod in a vertically sliding mode, and the lower end face of the upper adjusting pipe is abutted and supported on the upper surface of the first connecting plate; the upper end face of the lower adjusting nut is fixedly connected with a lower adjusting pipe (31) which is arranged upwards, the lower adjusting pipe can be sleeved at the lower end of the connecting rod in a vertically sliding mode, and the upper end face of the lower adjusting pipe is supported on the lower surface of the fourth connecting plate in an abutting mode.
6. A frame unit structure of a sand screening device according to claim 5, characterized in that the upper connecting rod (17) and the lower connecting rod (18) are both vertically arranged angle steel structures; the first connecting block (21) and the second connecting block (22) are welded and connected to the inner side of the right angle of the upper connecting rod; and the third connecting block (23) and the fourth connecting block (24) are both welded on the right-angle inner side of the lower connecting rod.
7. A sand screening apparatus rack unit structure as claimed in claim 5, characterised in that said coil springs (25) comprise a first coil spring (32), a second coil spring (33) and a third coil spring (34) which are coaxially arranged and vertically stacked.
8. A frame unit structure of a sand screening apparatus according to claim 7, wherein a first gasket and a second gasket are respectively provided between the first coil spring (32) and the second coil spring (33) and between the second coil spring (33) and the third coil spring (34), and the first gasket and the second gasket are respectively sleeved on the guide rod in a vertically slidable manner; the lower end of the first spiral spring and the upper end of the second spiral spring are respectively supported on the upper surface and the lower surface of the first gasket in an abutting mode; the lower end of the second coil spring and the upper end of the third coil spring are supported in abutment against the upper surface and the lower surface of the second spacer, respectively.
9. A sand screening device according to claim 8, wherein the diameters of the first and second spacers are smaller than the diameters of the offset holes in the second and third connecting blocks.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920372784.9U CN209772702U (en) | 2019-03-22 | 2019-03-22 | Sand and stone screening device's support body unit structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920372784.9U CN209772702U (en) | 2019-03-22 | 2019-03-22 | Sand and stone screening device's support body unit structure |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN209772702U true CN209772702U (en) | 2019-12-13 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201920372784.9U Active CN209772702U (en) | 2019-03-22 | 2019-03-22 | Sand and stone screening device's support body unit structure |
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| Country | Link |
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| CN (1) | CN209772702U (en) |
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2019
- 2019-03-22 CN CN201920372784.9U patent/CN209772702U/en active Active
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