CN115787404A - Paving grab bucket with screening function and using method - Google Patents

Abstract

The application discloses a paving grab bucket with a screening function and a using method, and belongs to the technical field of road construction. The utility model provides a grab bucket paves with screening function, includes quantitative screening subassembly, quantitative screening subassembly sets up respectively in the inside of two sets of clawing sections, and every group quantitative screening subassembly includes sieve bucket and adjustment disk, the sieve bucket sets up the inside at the clawing section, the inside fixedly connected with connecting plate of clawing section, and the connecting plate rotates with the sieve bucket to be connected, the surface of sieve bucket is provided with the frame, and frame fixed connection is inside at the clawing section, the bottom fixedly connected with baffle of frame, the adjustment disk can be at the inside spacing removal of sieve bucket, through being provided with quantitative screening subassembly, utilizes the rotation of sieve bucket to sieve raw and other materials, can make raw and other materials by more abundant of screening, can carry out nimble regulation to the inside capacity size of sieve bucket under the effect through the adjustment disk, realizes the ration to raw and other materials.

Description

Paving grab bucket with screening function and using method

Technical Field

The application relates to the technical field of road construction, in particular to a paving grab bucket with a screening function and a using method.

Background

The grab bucket is used for grabbing silt stones and various bulk goods, and places needing tunnel bridge road construction are more and more along with rapid development of the countries in recent years, raw materials with various particle sizes are needed in the tunnel bridge road construction, and a grab bucket tool is needed in the process of carrying the raw materials used for the tunnel bridge road construction into a transport vehicle, wherein the commonly used grab bucket is a hydraulic grab bucket which is generally driven by a hydraulic oil cylinder.

The paving grab bucket with the screening function for tunnel bridge road construction, which is provided by the document CN107268392A in the prior art, has the advantages that the driving motor, the stirrer and the two screen meshes with different apertures are arranged in the grab flap, so that the grab flap can be used as raw materials for tunnel bridge road construction with different particle sizes through two-stage screening, manual screening is not needed, the operation is very convenient, and the working efficiency is greatly improved.

Although the prior art scheme has the function of screening raw materials and is beneficial to leveling the road of tunnel bridge road construction, the following defects still exist in the using process: grab bucket in the above-mentioned patent is when sieving raw and other materials, the closed back of grab bucket, raw and other materials are in vertical state under the effect of gravity, even raw and other materials at this moment stir it, also difficult passing screen cloth, in addition grab bucket is under the condition of long-time continuous year heavy object, if not control its weight of carrying thing, the oil temperature that very easily leads to hydraulic oil rises too high, the oil temperature is too high then can lead to the grab bucket unstable phenomenon of work to appear, and then lead to the goods that snatchs to appear the condition that drops, current screening structure directly carries out the ejection of compact after accomplishing the screening in addition, still lead to the material body after the screening to be mixed once more and cause rework.

In view of this, we propose a paving grab bucket with screening function and method of use.

Disclosure of Invention

The application aims to provide a paving grab bucket with a screening function and a using method thereof, so as to solve the problems in the background technology.

The application provides a paving grab bucket with screening function and application method adopts following technical scheme:

a paving grab with screening function, comprising:

the two groups of the grab flaps are arranged, and discharge ports are formed in the inner bottom ends of the two groups of the grab flaps;

the hydraulic driving device can control the two groups of grab flaps to be opened and closed simultaneously;

the quantitative screening components are respectively arranged inside the two groups of grab flaps, each group of quantitative screening components comprises a screening barrel and an adjusting disc, the screening barrel is arranged inside the grab flaps, a connecting plate is fixedly connected inside the grab flaps and is rotationally connected with the screening barrel, a frame is arranged on the surface of the screening barrel and is fixedly connected inside the grab flaps, a baffle is fixedly connected to the bottom of the frame, the adjusting disc can move in the screening barrel in a limiting mode, a first electric push rod is fixedly mounted on the outer portion of the grab flaps, and the output end of the first electric push rod movably penetrates through the inside of the screening barrel and is fixedly connected with the adjusting disc;

the discharging assemblies are respectively arranged at the bottoms of the discharging holes and used for discharging the screened raw materials, and each discharging assembly comprises a friction block and a cover plate;

the driving part is arranged on the outer wall of the sieve barrel and used for controlling the sieve barrel to drive raw materials to rotate and sieve, and the driving part comprises a first gear, a second gear and a double-shaft motor.

Wherein transfer when the ration to raw and other materials, an electric putter one control adjustment dish is at the inside adjustment of accomplishing sieve bucket internal capacity that removes of sieve bucket, and hydraulic drive equipment control two sets of lamella of grabbing are opened and are accomplished and snatch the action to raw and other materials, and it is rotatory to arrange the material in-process control apron, and this rotation process raw and other materials can also be led to raw and other materials through the apron when being discharged through the discharge gate fast.

Through adopting above-mentioned technical scheme, can carry out abundant screening to raw and other materials through the sieve bucket, can carry out nimble adjustment to the capacity of sieve bucket inside through electric putter one control adjustment dish.

Optionally, the friction block is fixedly connected to the bottom of the grab flap and used for preventing abrasion of the bottom of the grab flap, the cover plate is located at the bottom of the discharge port, and the cover plate is rotatably connected with the friction block through a rotating shaft.

Through adopting above-mentioned technical scheme, through the setting of apron, can utilize the apron to shelter from the discharge gate to be the slope form after the apron upset, can lead to the discharge of raw and other materials.

Optionally, the outer end of the rotating shaft is fixedly connected with a third gear respectively, and the third gears are in meshed connection.

Through adopting above-mentioned technical scheme, through gear three, can control two sets of pivots and rotate simultaneously, and then make two sets of apron open simultaneously.

Optionally, a plurality of groups of notches are formed in the inner end of one group of the sieve barrel, a plurality of groups of fixture blocks are fixedly connected to the inner end of the other group of the sieve barrel, and the fixture blocks can be clamped in the notches.

Through adopting above-mentioned technical scheme, through the block between breach and the fixture block, can make a set of sieve bucket rotatory while control another a set of sieve bucket rotatory.

Optionally, a first gear is fixedly connected to the outer wall of the screen barrel, a second gear is meshed with the surface of the first gear, the first gear is a group, a double-shaft motor is fixedly mounted on the upper surface of the frame, a first rotating rod is fixedly connected to one output end of the double-shaft motor, and the other end of the first rotating rod is fixedly connected with the second gear.

Through adopting above-mentioned technical scheme, through the drive of biax motor, can utilize under the meshing of gear one and gear two is connected, control sieve bucket is rotatory, and then effectively improves the rotatory efficiency of sieve bucket.

Optionally, still include the linkage subassembly, the linkage subassembly sets up including connecting rod and conveying part, the connecting rod rotates to be connected in the inside of a set of clack, and the one end of connecting rod is located the upper surface of frame, the conveying part sets up between connecting rod and a set of pivot, and the conveying part includes conveyer belt and belt pulley.

Optionally, the linkage subassembly still includes electric putter two, and two fixed mounting of electric putter are at the upper surface of frame, the output fixedly connected with bull stick three of electric putter two, and the surface of bull stick three has first conical gear through integral key shaft connection, the one end fixedly connected with second conical gear of connecting rod, and second conical gear and first conical gear meshing are connected, the other end fixedly connected with dull polish piece one of bull stick three, and the opposite side frictional contact of dull polish piece one has dull polish piece two, the opposite side fixedly connected with bull stick four of dull polish piece two, and the opposite side output fixed connection of the other end of bull stick four and double-shaft motor.

Through adopting above-mentioned technical scheme, through the setting of linkage subassembly, can pass through electric putter two's control for the connecting rod drives the pivot rotation, and then makes things convenient for two sets of apron to overturn simultaneously, thereby has effectively accelerated the speed of arranging the material.

Optionally, the upper surface of the frame is fixedly connected with a support plate, the rotating rod III is movably inserted into the support plate, and the first bevel gear is rotatably connected with the support plate.

Through adopting above-mentioned technical scheme, through the setting of backup pad for first bevel gear can still keep meshing with second bevel gear under the supporting role of backup pad.

A use method of a paving grab bucket with a screening function comprises the following steps:

s1, when raw materials need to be grabbed, firstly, starting an electric push rod I to control an adjusting disc to move in a sieve barrel to adjust the internal capacity of the sieve barrel, after the adjustment is finished, controlling two groups of grab flaps to be opened through hydraulic driving equipment to grab the raw materials, enabling the raw materials to enter the sieve barrel, then controlling the two groups of grab flaps to be closed through the hydraulic driving equipment, and enabling clamping blocks and gaps at the inner ends of the two groups of sieve barrels to be clamped with each other,

s2, starting the double-shaft motor, controlling the first rotating rod, the second gear and the first gear to rotate through the double-shaft motor, enabling the two sets of sieve barrels to rotate in the grab bucket simultaneously by utilizing the clamping between the two sets of sieve barrels, sieving the raw materials,

s3, after the screening is finished, the rotating rod III and the grinding sheet I are controlled to move forwards through the electric push rod II, so that the grinding sheet I is in friction contact with the grinding sheet II, the rotating rod III is controlled to rotate by the rotating rod IV under the control of the double-shaft motor, the first bevel gear controls the second bevel gear and the connecting rod to rotate while the rotating rod III rotates,

s4, during the rotation of the connecting rod, under the transmission action of the transmission part, one group of rotating shafts rotate, and simultaneously, under the meshing connection between the three gears, the two groups of rotating shafts rotate simultaneously to control the cover plate to open,

s5, after the cover plate is opened, the cover plate is inclined, the raw materials screened from the inside of the grab flap can be discharged through the discharge hole,

s6, after the raw materials in the grab flaps are discharged, the two groups of grab flaps are controlled to be opened through the hydraulic driving device, so that the residual raw materials in the sieve barrel are discharged, and quantitative sieving is achieved.

In summary, the present application includes at least one of the following beneficial technical effects:

1. through being provided with quantitative screening subassembly, utilize the rotation of sieve bucket to sieve raw and other materials, can make raw and other materials by more abundant of screening, can carry out nimble regulation to the inside capacity size of sieve bucket under the effect through the adjustment disk, realize the ration to raw and other materials, avoid the grab bucket under the condition of long-time continuous load thing, the oil temperature of hydraulic oil rises too high, leads to the grab bucket to appear the phenomenon that job stabilization, goods appear droing.

2. Through being provided with row material subassembly, can be when grabbing the lamella and need arrange the material, rotatory through control apron, make raw and other materials discharge through the discharge gate fast to can also lead raw and other materials through the apron, make raw and other materials when being discharged, can pile up in the outside of grabbing the lamella, and then avoid the raw and other materials after the screening to appear mixing once more.

3. Through being provided with the linkage subassembly, can pass through the promotion of electric putter two, make three drive abrasive sheet one of bull stick and two frictional contact of abrasive sheet to utilize the meshing between first conical gear and the second conical gear to connect, the control connecting rod is rotatory, and then make two sets of pivots can rotate simultaneously, make things convenient for two sets of apron to overturn simultaneously, thereby it speeds up row's material to imitate, improve follow-up efficiency of paving, saved a large amount of time

Drawings

Fig. 1 is a schematic overall structure diagram of a paving grab bucket with a screening function and a use method thereof according to a preferred embodiment of the present application;

fig. 2 is a schematic cross-sectional structural view of a grab bucket for paving with a sieving function and a method for using the same according to a preferred embodiment of the present application;

fig. 3 is a schematic cross-sectional structural view of a sieving bucket of a paving grab bucket with a sieving function and a method of using the paving grab bucket according to a preferred embodiment of the present disclosure;

fig. 4 is a schematic structural view of a driving portion and a linkage assembly of a paving grab bucket with a screening function and a method of using the same according to a preferred embodiment of the present disclosure;

fig. 5 is an enlarged schematic view of a structure at a point a in fig. 4 of a paving grab bucket with a screening function and a method of using the same according to a preferred embodiment of the present disclosure;

fig. 6 is a schematic view illustrating an open state of a cover plate structure of a paving grab bucket with a screening function and a method for using the same according to a preferred embodiment of the present disclosure;

fig. 7 is a schematic view illustrating an open state of two sets of grab bucket structures of a paving grab bucket with a screening function and a method for using the same according to a preferred embodiment of the present application;

the reference numbers in the figures illustrate: 1. grasping a valve; 2. a hydraulic drive device; 3. a connecting plate; 4. a screen barrel; 5. a frame; 6. a baffle plate; 7. a friction block; 8. a cover plate; 11. an adjusting disk; 12. an electric push rod I; 21. a first gear; 22. a second gear; 23. a double-shaft motor; 24. a first rotating rod; 31. a third gear; 32. a connecting rod; 33. a conveying section; 41. a second electric push rod; 42. a third rotating rod; 43. a first bevel gear; 44. a second bevel gear; 45. grinding a first sand sheet; 46. grinding a second sand sheet; 47. a fourth rotating rod; 48. and a support plate.

Detailed Description

The present application is described in further detail below with reference to the attached drawing figures.

Referring to the accompanying drawings 1-3, the paving grab bucket with the screening function comprises grab flaps 1 and hydraulic driving equipment 2, wherein the grab flaps 1 are provided with two groups, discharge holes are formed in the bottom ends of the two groups of grab flaps 1, and the hydraulic driving equipment 2 can control the two groups of grab flaps 1 to be opened and closed simultaneously;

the quantitative screening component is provided with two groups, the two groups of quantitative screening components are respectively arranged inside the two groups of gripping flaps 1, each group of quantitative screening component comprises a screen barrel 4 and an adjusting disc 11, the screen barrel 4 can rotate inside the gripping flaps 1, the opposite ends of the two groups of screen barrels 4 are respectively connected with a connecting plate 3 through bearings in a rotating manner, the connecting plate 3 is fixedly connected with the inner wall of one side of the two groups of gripping flaps 1, the surface of the screen barrel 4 is provided with a frame 5, the frame 5 is fixedly connected inside the gripping flaps 1, the bottom of the frame 5 is fixedly connected with a baffle 6, the adjusting disc 11 can move in a limiting manner inside the screen barrel 4, the outer part of the gripping flaps 1 is fixedly provided with an electric push rod I12, the output end of the electric push rod I12 movably penetrates into the sieve barrel 4 and is fixedly connected with the adjusting disc 11, raw materials are sieved by the rotation of the sieve barrel 4 through the sieve barrel 4, the raw materials can be more sufficiently sieved, the adjusting disc 11 is controlled to move in the sieve barrel 4 through the electric push rod I12, the raw materials in the sieve barrel 4 can be quantified, the phenomenon that the grab bucket is unstable in work and goods fall off due to the fact that the oil temperature of hydraulic oil rises too high under the condition that the grab bucket continuously carries heavy objects for a long time is avoided, and the raw materials in the sieve barrel 4 can be pushed through the adjusting disc 11 when being discharged, so that the raw materials are conveniently discharged;

when the raw materials are quantitatively adjusted, the electric push rod I12 controls the adjusting disc to move inside the sieve barrel to adjust the internal capacity of the sieve barrel, the hydraulic driving device controls the two groups of gripping flaps to open to finish gripping actions on the raw materials, the cover plate is controlled to rotate in the material discharging process, and the raw materials can be discharged through the discharge port rapidly and can be guided to the raw materials through the cover plate in the rotating process.

The inner ends of one group of sieve barrels 4 are provided with a plurality of groups of notches, the inner ends of the other group of sieve barrels 4 are fixedly connected with a plurality of groups of fixture blocks, the fixture blocks can be clamped in the notches, the outer wall of one group of sieve barrels 4 is fixedly connected with a first gear 21, the surface of the first gear 21 is meshed with a second gear 22, the upper surface of one group of framework 5 is fixedly provided with a double-shaft motor 23, the output end of one side of the double-shaft motor 23 is fixedly connected with a first rotating rod 24, the other end of the first rotating rod 24 is fixedly connected with the second gear 22, through the matching between the fixture blocks and the notches, one group of sieve barrels 4 can rotate together with the sieve barrels 4, and the notches and the fixture blocks are arranged into a plurality of groups, so that when the two groups of gripping flaps 1 are combined, the two groups of sieve barrels 4 can be rapidly butted and clamped, and the efficiency of rotation of the sieve barrels 4 can be effectively improved through the matching of the first gear 21, the second gear 22, the double-shaft motor 23 and the first rotating rod 24, and the speed of the sieve barrels 4 can be further increased and working efficiency can be improved;

please refer to fig. 6-7, the material discharging assembly provided by the present application, the material discharging assembly is respectively disposed at the bottom of the material outlet, and is used for discharging the screened raw material, the material discharging assembly includes a friction block 7 and a cover plate 8, the friction block 7 is fixedly connected to the bottom of the gripping flap 1, and is used for preventing the bottom of the gripping flap 1 from being worn, the cover plate 8 is located at the bottom of the material outlet, and the cover plate 8 is rotatably connected to the friction block 7 through a rotating shaft, the outer end of the rotating shaft is respectively and fixedly connected with a gear three 31, and the gear three 31 is engaged with each other, through the cover plate 8 disposed at the material outlet, when the material is required to be discharged, the cover plate 8 rotates, so that the raw material can be rapidly discharged through the material outlet, and the cover plate 8 further has a guiding function, when the raw material is discharged through the cover plate 8, the raw material can be stacked outside of the gripping flap 1, and further, the mixing of the screened raw material can be avoided.

Referring to fig. 4-5, the present application further includes a linkage assembly, the linkage assembly includes a connecting rod 32 and a transmitting portion 33, the connecting rod 32 is rotatably connected inside the set of grasping flaps 1, one end of the connecting rod 32 is located on the upper surface of the frame 5, the transmitting portion 33 is disposed between the connecting rod 32 and the set of rotating shafts, the transmitting portion 33 includes a conveyor belt and a belt pulley, the upper surface of the frame 5 is fixedly provided with a second electric push rod 41, an output end of the second electric push rod 41 is fixedly connected with a third rotating rod 42, a surface of the third rotating rod 42 is connected with a first bevel gear 43 through a spline shaft, one end of the connecting rod 32 is fixedly connected with a second bevel gear 44, the second bevel gear 44 is meshed with the first bevel gear 43, the upper surface of the frame 5 is fixedly connected with a supporting plate 48, the third rotating rod 42 is movably inserted inside the supporting plate 48, the first bevel gear 43 is rotatably connected with the supporting plate 48, when the electric push rod II 41 controls the rotating rod III 42 and the first grinding sheet 45 to move, the first bevel gear 43 can still keep meshed with the second bevel gear 44 under the supporting action of the supporting plate 48, the other end of the rotating rod III 42 is fixedly connected with the first grinding sheet 45, the other side of the first grinding sheet 45 is in friction contact with the second grinding sheet 46, the other side of the second grinding sheet 46 is fixedly connected with the rotating rod IV 47, the other end of the rotating rod IV 47 is fixedly connected with the other side output end of the double-shaft motor 23, when the double-shaft motor 23 controls the sieve barrel 4 to rotate, the rotating rod III 42 drives the first grinding sheet 45 to be in friction contact with the second grinding sheet 46 through the pushing of the electric push rod II 41, meanwhile, the connecting rod 32 can rotate through the meshing connection between the first bevel gear 43 and the second bevel gear 44, further through the transmission action of the transmission part 33 and the meshing connection between the gears III 31, the two sets of rotating shafts can be controlled to rotate simultaneously, and the two sets of cover plates 8 can be turned over simultaneously, so that the discharging speed is effectively increased, the subsequent paving efficiency is improved, and a large amount of time is saved.

Referring to fig. 1-7, a method for using a paving grab with a screening function includes the following steps:

s1, when raw materials need to be grabbed, firstly, starting an electric push rod I12, enabling the electric push rod I12 to control an adjusting disc 11 to move in a sieve barrel 4, so as to adjust the internal capacity of the sieve barrel 4, after the adjustment is completed, controlling two groups of grabbing pieces 1 to be opened through a hydraulic driving device 2, grabbing the raw materials, enabling the raw materials to enter the sieve barrel 4, then controlling the two groups of grabbing pieces 1 to be closed through the hydraulic driving device 2, and enabling clamping blocks and gaps at the inner ends of the two groups of sieve barrels 4 to be clamped with each other,

s2, starting the double-shaft motor 23, controlling the first rotating rod 24, the second gear 22 and the first gear 21 to rotate through the double-shaft motor 23, enabling the two sets of sieve barrels 4 to rotate in the grab blade 1 simultaneously by utilizing the clamping between the two sets of sieve barrels 4, sieving the raw materials,

s3, after the screening is finished, the third rotating rod 42 and the first abrasive sheet 45 are controlled to move forwards through the second electric push rod 41, so that the first abrasive sheet 45 is in frictional contact with the second abrasive sheet 46, the third rotating rod 42 is controlled to rotate through the fourth rotating rod 47 under the control of the double-shaft motor 23, the second bevel gear 44 and the connecting rod 32 are controlled to rotate through the first bevel gear 43 while the third rotating rod 42 rotates,

s4, during the rotation of the connecting rod 32, under the transmission action of the transmission part 33, one group of rotating shafts are rotated, and under the meshing connection between the three gears 31, the two groups of rotating shafts are simultaneously rotated, so that the cover plate 8 is controlled to be opened,

s5, after the cover plate 8 is opened, the cover plate is inclined, the raw materials screened from the interior of the grab flap 1 can be discharged through the discharge hole,

s6, after the raw materials in the grab flaps 1 are discharged, the two groups of grab flaps 1 are controlled to be opened through the hydraulic driving device 2, so that the residual raw materials in the sieve barrel 4 are discharged, and quantitative sieving is achieved.

The implementation principle of the paving grab bucket with the screening function and the using method is as follows: when raw materials need to be grabbed, firstly, starting an electric push rod I12 to enable the electric push rod I12 to control an adjusting disc 11 to move in a sieve barrel 4, adjusting the internal capacity of the sieve barrel 4 through the adjusting disc 11, after the adjustment is completed, controlling two groups of grabbing pieces 1 to be opened through a hydraulic driving device 2, grabbing the raw materials, at the moment, under the shielding of a baffle 6, the raw materials enter the sieve barrel 4, then controlling the two groups of grabbing pieces 1 to be closed through the hydraulic driving device 2, at the moment, clamping blocks and gaps at the inner ends of the two groups of sieve barrels 4 are clamped with each other, then starting a double-shaft motor 23, controlling a rotating rod I24, a gear II 22 and a gear I21 to rotate through the double-shaft motor 23, at the moment, utilizing the clamping between the two groups of sieve barrels 4 to enable the two groups of sieve barrels 4 to simultaneously rotate in the grabbing pieces 1, and sieving the raw materials;

after the screening is completed, the electric push rod II 41 is started, the rotating rod III 42 and the grinding sheet I45 are controlled to move forwards through the electric push rod II 41, so that the grinding sheet I45 is in friction contact with the grinding sheet II 46, at the moment, the rotating rod IV 47 is controlled to rotate through the control of the double-shaft motor 23, so that the rotating rod III 42 is rotated, at the same time, the first bevel gear 43 controls the second bevel gear 44 and the connecting rod 32 to rotate, at the moment, a group of rotating shafts are rotated through the transmission function of the transmission part 33, two groups of rotating shafts are simultaneously rotated through the meshing connection between the gear III 31, the control cover plate 8 is opened, after the cover plate 8 is opened, the electric push rod II 41 is contracted again, so that the rotating rod III 42 is controlled to move inside the supporting plate 48, so that the release between the grinding sheet I45 and the grinding sheet II 46 is released, at the cover plate 8 is in an inclined shape at the moment, the raw material screened from the inside of the gripping flap 1 can be discharged through the discharge port, after the raw material in the gripping flap 1 is discharged, at the screening is controlled by the hydraulic driving device 2, so that the raw material in the two groups of the two groups is quantitatively discharged out of the screening barrel, and the screening barrel 4, and the screening is realized.

Therefore, the quantitative screening component is arranged, the raw materials are screened by utilizing the rotation of the screen barrel, the raw materials can be screened more sufficiently, the capacity inside the screen barrel can be flexibly adjusted under the action of the adjusting disc, the raw materials are quantified, and the phenomena that the grab bucket is unstable in work and goods fall off due to the fact that the oil temperature of hydraulic oil rises too high under the condition that the grab bucket continuously carries heavy objects for a long time are avoided.

The above embodiments are preferred embodiments of the present application, and the protection scope of the present application is not limited by the above embodiments, so: all equivalent changes made according to the structure, shape and principle of the present application shall be covered by the protection scope of the present application.

Claims (9)

1. A paving grab having screening functionality, comprising:

the two groups of the grab flaps are arranged, and discharge ports are formed in the inner bottom ends of the two groups of the grab flaps;

the hydraulic driving device can control the two groups of grab flaps to be opened and closed simultaneously;

the quantitative screening components are respectively arranged inside the two groups of grab flaps, each group of quantitative screening components comprises a screen barrel and an adjusting disc, the screen barrels are arranged inside the grab flaps, connecting plates are fixedly connected inside the grab flaps and are rotatably connected with the screen barrels, a frame is arranged on the surface of the screen barrel and is fixedly connected inside the grab flaps, a baffle is fixedly connected to the bottom of the frame, the adjusting disc can move in the screen barrel in a limiting manner, a first electric push rod is fixedly mounted on the outer portion of the grab flap, and the output end of the first electric push rod movably penetrates through the screen barrel and is fixedly connected with the adjusting disc;

the discharging assemblies are respectively arranged at the bottoms of the discharging holes and used for discharging the screened raw materials, and each discharging assembly comprises a friction block and a cover plate;

the driving part is arranged on the outer wall of the sieve barrel and used for controlling the sieve barrel to drive the raw materials to rotate and sieve, and the driving part comprises a first gear, a second gear and a double-shaft motor;

wherein transfer when the ration to raw and other materials, an electric putter one control adjustment dish removes the adjustment of accomplishing sieve bucket internal capacity inside the sieve bucket, and hydraulic drive equipment control two sets of lamella of grabbing are opened and are accomplished and snatch the action to raw and other materials, and it is rotatory to arrange the material in-process control apron, and raw and other materials can also be led through the apron and unload when being discharged through the discharge gate fast in this rotation process.

2. The paving grab bucket with screening function as claimed in claim 1, wherein the friction block is fixedly connected to the bottom of the grab bucket for preventing the bottom of the grab bucket from being abraded, the cover plate is positioned at the bottom of the discharge port, and the cover plate is rotatably connected with the friction block through a rotating shaft.

3. The paving grab bucket with screening function as claimed in claim 2, wherein the outer ends of the rotating shafts are fixedly connected with three gears respectively, and the three gears are in meshed connection.

4. The paving grab bucket with the screening function as claimed in claim 1, wherein a plurality of groups of notches are formed in the inner end of one group of the screen bucket, a plurality of groups of clamping blocks are fixedly connected to the inner end of the other group of the screen bucket, and the clamping blocks can be clamped in the notches.

5. The paving grab bucket with the screening function as claimed in claim 1, wherein the first gear is fixedly connected to the outer wall of the screen barrels, the second gear is meshed with the surface of the first gear, a double-shaft motor is fixedly mounted on the upper surface of the frame, a first rotating rod is fixedly connected to the output end of one side of the double-shaft motor, and the other end of the first rotating rod is fixedly connected with the second gear.

6. A paving grab having screening capabilities as defined in claim 2 further comprising a linkage assembly, wherein the linkage assembly is configured to include a link rotatably connected inside the set of grab lobes with one end of the link located on the upper surface of the frame and a transfer portion disposed between the link and the set of axles, the transfer portion including a conveyor belt and a pulley.

7. The paving grab bucket with the screening function as claimed in claim 6, wherein the linkage assembly further comprises a second electric push rod, the second electric push rod is fixedly mounted on the upper surface of the frame, a third rotating rod is fixedly connected to the output end of the second electric push rod, the surface of the third rotating rod is connected with a first bevel gear through a spline shaft, a second bevel gear is fixedly connected to one end of the connecting rod and meshed with the first bevel gear, a first sanding sheet is fixedly connected to the other end of the third rotating rod, a second sanding sheet is in friction contact with the other side of the first sanding sheet, a fourth rotating rod is fixedly connected to the other side of the second sanding sheet, and the other end of the fourth rotating rod is fixedly connected with the other side output end of the double-shaft motor.

8. The paving grab bucket with screening function as claimed in claim 7, wherein a support plate is fixedly connected to the upper surface of the frame, the rotating rod is movably inserted into the support plate, and the first bevel gear is rotatably connected with the support plate.

9. Method for using a paving grab with screening function, comprising a paving grab with screening function according to any of claims 1-8, characterized in that it comprises the following steps:

s1, when raw materials need to be grabbed, firstly, starting an electric push rod I, enabling the electric push rod I to control a regulating disc to move in a sieve barrel to realize the adjustment of the internal capacity of the sieve barrel, after the adjustment is finished, controlling two groups of grab flaps to be opened through hydraulic driving equipment, grabbing the raw materials, enabling the raw materials to enter the sieve barrel, then controlling the two groups of grab flaps to be closed through the hydraulic driving equipment, and enabling clamping blocks at the inner ends of the two groups of sieve barrels to be clamped with notches at the moment,

s2, starting the double-shaft motor, controlling the first rotating rod, the second gear and the first gear to rotate through the double-shaft motor, enabling the two sets of sieve barrels to rotate in the grab bucket simultaneously by utilizing the clamping between the two sets of sieve barrels, sieving the raw materials,

s3, after the screening is finished, the rotating rod III and the grinding sheet I are controlled to move forwards through the electric push rod II, so that the grinding sheet I is in frictional contact with the grinding sheet II, the rotating rod III is controlled to rotate by the rotating rod IV under the control of the double-shaft motor, the first bevel gear controls the second bevel gear and the connecting rod to rotate while the rotating rod III rotates,

s4, during the rotation of the connecting rod, one group of rotating shafts are rotated under the transmission action of the transmission part, and the two groups of rotating shafts are simultaneously rotated under the meshing connection of the three gears to control the cover plate to be opened,

s5, after the cover plate is opened, the cover plate is inclined, the raw materials screened from the interior of the grab flap can be discharged through the discharge hole,

s6, after the raw materials in the grab flaps are discharged, the two groups of grab flaps are controlled to be opened through the hydraulic driving device, so that the residual raw materials in the sieve barrel are discharged, and quantitative sieving is achieved.

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