Paving grab bucket with screening function and use method thereof

Abstract

The present application discloses a paving grab with screening function and a method of using the same, which belongs to the technical field of road construction. A paving grab with screening function includes a quantitative screening component, which is respectively arranged inside two groups of grab petals, and each group of quantitative screening components includes a screen barrel and an adjusting disk, the screen barrel is arranged inside the grab petal, a connecting plate is fixedly connected inside the grab petal, and the connecting plate is rotatably connected to the screen barrel, a frame is arranged on the surface of the screen barrel, and the frame is fixedly connected inside the grab petal, a baffle is fixedly connected to the bottom of the frame, and the adjusting disk can move within the screen barrel in a limited position, and the raw materials can be screened more fully by using the rotation of the screen barrel by providing a quantitative screening component, and the capacity of the screen barrel can be flexibly adjusted under the action of the adjusting disk to achieve quantitative raw materials.

Description

Technical Field

[0001] The present application relates to the technical field of road construction, and in particular to a paving grab bucket with a screening function and a method of using the same. Background Art

[0002] A grab bucket is a bucket that can be opened and closed to grab mud, sand, gravel and various bulk goods. With the rapid development of the country in recent years, more and more places need to carry out tunnel, bridge and road construction. Raw materials of various particle sizes are needed in tunnel, bridge and road construction. The grab bucket is a tool that must be used in the process of transporting the raw materials used for tunnel, bridge and road construction into the transport vehicle. Among them, the commonly used grab bucket is a hydraulic grab bucket, which is generally driven by a hydraulic cylinder.

[0003] The prior art document CN107268392A provides a paving grab with a screening function for tunnel, bridge and road construction. By installing a driving motor, an agitator and two sieves with different apertures inside the grab flap, the grab flap can sort out raw materials of different particle sizes for tunnel, bridge and road construction through two-stage screening for use. No manual screening is required, which is very convenient and greatly improves work efficiency.

[0004] Although the above-mentioned prior art solutions have the function of screening raw materials and are helpful for leveling roads during tunnel, bridge and road construction, they still have the following defects during use: when the grab in the above-mentioned patent screens the raw materials, after the grab is closed, the raw materials are in a vertical state under the action of gravity. At this time, even if the raw materials are stirred, it is difficult for them to pass through the screen. In addition, when the grab is continuously loaded for a long time, if the weight of the load is not controlled, it is very easy to cause the oil temperature of the hydraulic oil to rise too high. Excessive oil temperature will cause the grab to work unstably, and then cause the grabbed goods to fall off. In addition, the existing screening structure directly discharges the material after screening, which is also easy to cause the screened material to be mixed again and cause rework.

[0005] In view of this, we propose a paving grab with screening function and a use method thereof. Summary of the invention

[0006] The purpose of the present application is to provide a paving grab bucket with screening function and a method of use to solve the problems raised in the above-mentioned background technology.

[0007] The present application provides a paving grab bucket with screening function and a method of use, which adopts the following technical solution:

[0008] A paving grab bucket with screening function, comprising:

[0009] Grasping petals, wherein two groups of grabbing petals are provided, and discharge ports are provided at the inner bottom ends of the two groups of grabbing petals;

[0010] A hydraulic drive device capable of controlling the simultaneous opening and closing of two sets of gripping petals;

[0011] A quantitative screening component, wherein the quantitative screening components are respectively arranged inside the two groups of grab petals, and each group of quantitative screening components includes a screen barrel and an adjusting disk, the screen barrel is arranged inside the grab petal, a connecting plate is fixedly connected inside the grab petal, and the connecting plate is rotatably connected to the screen barrel, a frame is arranged on the surface of the screen barrel, and the frame is fixedly connected inside the grab petal, a baffle is fixedly connected to the bottom of the frame, the adjusting disk can move within the screen barrel, an electric push rod 1 is fixedly installed outside the grab petal, and the output end of the electric push rod 1 movably penetrates into the screen barrel and is fixedly connected to the adjusting disk;

[0012] A discharge assembly, each of which is disposed at the bottom of the discharge port and is used to discharge the screened raw materials. The discharge assembly includes a friction block and a cover plate;

[0013] The driving part is arranged on the outer wall of the screen barrel and is used to control the screen barrel to drive the raw materials to rotate and screen. The driving part includes gear 1, gear 2 and a dual-axis motor.

[0014] When adjusting the quantity of raw materials, the electric push rod controls the adjustment disk to move inside the screen barrel to adjust the internal capacity of the screen barrel. The hydraulic drive equipment controls the opening of two sets of grabbing petals to complete the grabbing of the raw materials. During the discharging process, the cover plate is controlled to rotate. During this rotation process, the raw materials are quickly discharged through the discharge port, and the raw materials can also be guided for unloading through the cover plate.

[0015] By adopting the above technical solution, the raw materials can be fully screened through the screening barrel, and the capacity inside the screening barrel can be flexibly adjusted by controlling the adjustment disk through the electric push rod.

[0016] Optionally, the friction block is fixedly connected to the bottom of the grabbing flap to prevent the bottom of the grabbing flap from being worn. The cover plate is located at the bottom of the discharge port, and the cover plate and the friction block are rotatably connected via a rotating shaft.

[0017] By adopting the above technical solution and setting the cover plate, the discharge port can be shielded by the cover plate, and the cover plate is tilted after being flipped, so as to guide the discharge of the raw materials.

[0018] Optionally, the outer ends of the rotating shafts are respectively fixedly connected with gear three, and the gear three are meshingly connected.

[0019] By adopting the above technical solution, through gear three, the two sets of rotating shafts can be controlled to rotate simultaneously, so that the two sets of cover plates can be opened at the same time.

[0020] Optionally, a plurality of notches are formed at the inner ends of one group of the sieve barrels, and a plurality of blocks are fixedly connected to the inner ends of another group of the sieve barrels, and the blocks can be engaged in the notches.

[0021] By adopting the above technical solution, through the engagement between the notch and the block, one group of sieve barrels can be rotated while controlling the rotation of another group of sieve barrels.

[0022] Optionally, gear one is fixedly connected to the outer wall of a group of screen barrels, and the surface of gear one is meshingly connected with gear two, a dual-axis motor is fixedly installed on the upper surface of a group of frames, one side output end of the dual-axis motor is fixedly connected to rotating rod one, and the other end of rotating rod one is fixedly connected to gear two.

[0023] By adopting the above technical solution, through the drive of the dual-axis motor, the rotation of the screen barrel can be controlled by utilizing the meshing connection between gear one and gear two, thereby effectively improving the efficiency of the screen barrel rotation.

[0024] Optionally, it also includes a linkage component, which includes a connecting rod and a transmission part. The connecting rod is rotatably connected inside a group of grabbing petals, and one end of the connecting rod is located on the upper surface of the frame. The transmission part is arranged between the connecting rod and a group of rotating shafts, and the transmission part includes a conveyor belt and a pulley.

[0025] Optionally, the linkage assembly also includes an electric push rod 2, and the electric push rod 2 is fixedly mounted on the upper surface of the frame, the output end of the electric push rod 2 is fixedly connected to a rotating rod 3, and the surface of the rotating rod 3 is connected to a first bevel gear through a spline shaft, one end of the connecting rod is fixedly connected to a second bevel gear, and the second bevel gear is meshingly connected to the first bevel gear, the other end of the rotating rod 3 is fixedly connected to a frosted sheet 1, and the other side of the frosted sheet 1 is in friction contact with the frosted sheet 2, the other side of the frosted sheet 2 is fixedly connected to a rotating rod 4, and the other end of the rotating rod 4 is fixedly connected to the output end on the other side of the dual-axis motor.

[0026] By adopting the above technical solution and setting the linkage component, the connecting rod can drive the rotating shaft to rotate through the control of the electric push rod 2, thereby facilitating the simultaneous flipping of the two sets of cover plates, thereby effectively speeding up the discharge speed.

[0027] Optionally, a support plate is fixedly connected to the upper surface of the frame, the rotating rod is movably inserted inside the support plate, and the first bevel gear is rotatably connected to the support plate.

[0028] By adopting the above technical solution and providing the support plate, the first bevel gear can still be meshed with the second bevel gear under the support of the support plate.

[0029] A method for using a paving grab bucket with a screening function, the steps of which are as follows:

[0030] S1, when it is necessary to grab the raw materials, first start the electric push rod 1, so that the electric push rod 1 controls the adjustment disk to move inside the screen barrel to adjust the internal capacity of the screen barrel. After the adjustment is completed, the two sets of grab petals are controlled to open by the hydraulic drive device to grab the raw materials. At this time, the raw materials enter the screen barrel, and then the two sets of grab petals are controlled to close by the hydraulic drive device. At this time, the blocks and notches at the inner ends of the two sets of screen barrels are engaged with each other.

[0031] S2, then start the double-axis motor, and control the rotation of the rotating rod 1, gear 2 and gear 1 through the double-axis motor. At this time, the two sets of sieve barrels are engaged with each other, so that the two sets of sieve barrels rotate inside the grabbing flap at the same time to screen the raw materials.

[0032] S3, after the screening is completed, the electric push rod 2 controls the rotating rod 3 and the frosting sheet 1 to move forward, so that the frosting sheet 1 and the frosting sheet 2 are in friction contact. At this time, the control of the double-axis motor can make the rotating rod 4 control the rotating rod 3 to rotate. When the rotating rod 3 rotates, the first bevel gear controls the second bevel gear and the connecting rod to rotate.

[0033] S4, during the rotation of the connecting rod, the transmission part is used to make one set of rotating shafts rotate, and the meshing connection between the gears 3 is used to make the two sets of rotating shafts rotate at the same time, and the cover is controlled to open.

[0034] S5, after the cover is opened, it is tilted, and the raw materials screened inside the grabbing flap can be discharged through the discharge port.

[0035] S6, after the raw materials inside the grabbing flaps are discharged, the two groups of grabbing flaps are controlled to open by the hydraulic driving device, so that the remaining raw materials inside the screen barrel are discharged, thereby realizing quantitative screening.

[0036] In summary, the present application includes at least one of the following beneficial technical effects:

[0037] 1. By providing a quantitative screening component and utilizing the rotation of the screen barrel to screen the raw materials, the raw materials can be screened more fully. The capacity inside the screen barrel can be flexibly adjusted by the action of the adjusting disk to achieve quantitative measurement of the raw materials and avoid excessive increase in the temperature of the hydraulic oil when the grab bucket is continuously loaded for a long time, resulting in unstable operation of the grab bucket and falling off of the goods.

[0038] 2. By providing a discharge assembly, when the grabbing flap needs to discharge, the cover plate can be controlled to rotate so that the raw materials can be quickly discharged through the discharge port. The cover plate can also guide the raw materials so that when the raw materials are discharged, they can be accumulated on the outside of the grabbing flap, thereby avoiding re-mixing of the screened raw materials.

[0039] 3. By providing a linkage assembly, the electric push rod 2 can be pushed to make the rotating rod 3 drive the sanding sheet 1 to make friction contact with the sanding sheet 2, and the meshing connection between the first bevel gear and the second bevel gear is used to control the rotation of the connecting rod, so that the two sets of rotating shafts can rotate at the same time, which is convenient for the two sets of cover plates to flip at the same time, thereby effectively speeding up the discharge speed, improving the efficiency of subsequent paving, and saving a lot of time. BRIEF DESCRIPTION OF THE DRAWINGS

[0040] Figure 1 This is a schematic diagram of the overall structure of a paving grab bucket with screening function and a method of using the paving grab bucket disclosed in a preferred embodiment of the present application;

[0041] Figure 2 A schematic cross-sectional view of the structure of the grabbing petal of a paving grab bucket with screening function and a method of using the same disclosed in a preferred embodiment of the present application;

[0042] Figure 3 A schematic cross-sectional view of the structure of the screening barrel of a paving grab with screening function and a method of using the paving grab with screening function disclosed in a preferred embodiment of the present application;

[0043] Figure 4 This is a structural schematic diagram of the driving part and linkage assembly of a paving grab bucket with screening function and a method of using the paving grab bucket according to a preferred embodiment of the present application;

[0044] Figure 5 A preferred embodiment of the present application discloses a paving grab bucket with screening function and a method of using the same Figure 4 A schematic diagram of the structure enlargement in the middle;

[0045] Figure 6 A schematic diagram of the cover plate structure of a paving grab bucket with screening function and a method of using the paving grab bucket disclosed in a preferred embodiment of the present application in an open state;

[0046] Figure 7 A schematic diagram of the open state of the two groups of grabbing petals of a paving grab bucket with screening function and a method of using the paving grab bucket according to a preferred embodiment of the present application;

[0047] Explanation of the numbers in the figure: 1. Grabbing flap; 2. Hydraulic drive device; 3. Connecting plate; 4. Screen barrel; 5. Frame; 6. Baffle; 7. Friction block; 8. Cover plate; 11. Adjusting disk; 12. Electric push rod one; 21. Gear one; 22. Gear two; 23. Double-axis motor; 24. Turning rod one; 31. Gear three; 32. Connecting rod; 33. Transmission part; 41. Electric push rod two; 42. Turning rod three; 43. First bevel gear; 44. Second bevel gear; 45. Frosting sheet one; 46. Frosting sheet two; 47. Turning rod four; 48. Support plate. DETAILED DESCRIPTION

[0048] The present application is further described in detail below in conjunction with the accompanying drawings.

[0049] Please see attached Figure 1-3 The present application provides a paving grab with a screening function, comprising a grabbing flap 1 and a hydraulic drive device 2, wherein the grabbing flap 1 is provided with two groups, and a discharge port is provided at the inner bottom end of the two groups of grabbing flaps 1, and the hydraulic drive device 2 can control the two groups of grabbing flaps 1 to open and close simultaneously;

[0050] A quantitative screening component, wherein two groups of quantitative screening components are provided, and the two groups of quantitative screening components are respectively placed inside the two groups of grabbing petals 1, and each group of quantitative screening components includes a screen barrel 4 and an adjusting disk 11, the screen barrel 4 can rotate inside the grabbing petal 1, and the opposite ends of the two groups of screen barrels 4 are respectively rotatably connected with a connecting plate 3 through a bearing, and the connecting plate 3 is fixedly connected to the inner wall of the opposite side of the two groups of grabbing petals 1, a frame 5 is provided on the surface of the screen barrel 4, and the frame 5 is fixedly connected to the inside of the grabbing petal 1, and a baffle 6 is fixedly connected to the bottom of the frame 5, and the adjusting disk 11 can move within the screen barrel 4, and an electric push rod 12 is fixedly installed on the outside of the grabbing petal 1, and the electric push rod 1 The output end of 2 is movable through the inside of the screen barrel 4 and is fixedly connected to the adjusting disk 11. By providing the screen barrel 4, the raw materials are screened by rotating the screen barrel 4, so that the raw materials can be screened more fully, and the adjusting disk 11 is controlled to move inside the screen barrel 4 by the electric push rod 12, so that the raw materials inside the screen barrel 4 can be quantitatively measured, so as to avoid the grab bucket from working unstably and the goods falling off due to the excessive increase in the oil temperature of the hydraulic oil when the grab bucket is continuously loaded for a long time, and the raw materials inside the screen barrel 4 can also be pushed by the setting of the adjusting disk 11 when being discharged, so as to facilitate the discharge of the raw materials;

[0051] When adjusting the quantity of raw materials, the electric push rod 12 controls the adjustment disk to move inside the screen barrel to complete the adjustment of the internal capacity of the screen barrel, the hydraulic drive equipment controls the two sets of grabbing petals to open to complete the grabbing of the raw materials, and the cover plate is controlled to rotate during the discharging process. During the rotation, the raw materials are quickly discharged through the discharge port and the raw materials can also be guided for unloading through the cover plate.

[0052] The inner end of one group of sieve barrels 4 is provided with multiple groups of notches, the inner end of another group of sieve barrels 4 is fixedly connected with multiple groups of blocks, and the blocks can be engaged in the notches, the outer wall of one group of sieve barrels 4 is fixedly connected with a gear 1 21, and the surface of the gear 1 21 is meshingly connected with a gear 22, and the upper surface of a group of frames 5 is fixedly installed with a double-axis motor 23, one side output end of the double-axis motor 23 is fixedly connected with a rotating rod 1 24, and the other end of the rotating rod 1 24 is fixedly connected with the gear 22. Through the cooperation between the blocks and the notches, when one group of sieve barrels 4 rotates, the other group of sieve barrels 4 can rotate with the sieve barrel 4 at the same time, and by setting the notches and the blocks as multiple groups, when the two groups of grab petals 1 are merged, the two groups of sieve barrels 4 can also be quickly docked and engaged, and through the cooperation of the gear 1 21, the gear 2 22, the double-axis motor 23 and the rotating rod 1 24, the efficiency of the rotation of the sieve barrel 4 can be effectively improved, thereby accelerating the screening speed and improving the work efficiency;

[0053] Please see attached Figure 6-7 The discharging assembly provided in the present application is respectively arranged at the bottom of the discharging port, and is used for discharging the raw materials after screening. The discharging assembly includes a friction block 7 and a cover plate 8. The friction block 7 is fixedly connected to the bottom of the grabbing flap 1 to prevent the bottom of the grabbing flap 1 from being worn. The cover plate 8 is located at the bottom of the discharging port, and the cover plate 8 and the friction block 7 are rotatably connected by a rotating shaft. The outer ends of the rotating shafts are respectively fixedly connected with gears three 31, and the gears three 31 are meshingly connected. By arranging a cover plate 8 at the discharging port, when discharging is required, the cover plate 8 is rotated to enable the raw materials to be quickly discharged through the discharging port, and the cover plate 8 also has a guiding function. When the raw materials are discharged through the cover plate 8, they can be accumulated on the outside of the grabbing flap 1, thereby avoiding the mixing of the screened raw materials again.

[0054] Please see attached Figure 4-5The present application also includes a linkage component, which includes a connecting rod 32 and a transmission part 33. The connecting rod 32 is rotatably connected to the inside of a group of grab petals 1, and one end of the connecting rod 32 is located on the upper surface of the frame 5. The transmission part 33 is arranged between the connecting rod 32 and a group of rotating shafts, and the transmission part 33 includes a conveyor belt and a pulley. An electric push rod 2 41 is fixedly installed on the upper surface of the frame 5. The output end of the electric push rod 2 41 is fixedly connected to a rotating rod 3 42, and the surface of the rotating rod 3 42 is connected to a first bevel gear 43 through a spline shaft. One end of the connecting rod 32 is fixedly connected to a second bevel gear 44, and the second bevel gear 44 is meshed with the first bevel gear 43. A support plate 48 is fixedly connected to the upper surface of the frame 5. The rotating rod 3 42 is movably inserted in the support plate 48. The first bevel gear 43 is rotatably connected to the support plate 48. When the electric push rod 2 41 controls the rotating rod 3 42 and the frosting sheet 1 45 to move, the first bevel gear 43 can be on the support Under the support of the support plate 48, it still maintains meshing with the second bevel gear 44. The other end of the rotating rod three 42 is fixedly connected to the frosting piece 1 45, and the other side of the frosting piece 1 45 is in friction contact with the frosting piece 2 46. The other side of the frosting piece 2 46 is fixedly connected to the rotating rod four 47, and the other end of the rotating rod four 47 is fixedly connected to the output end of the other side of the dual-axis motor 23. When the dual-axis motor 23 controls the rotation of the screen barrel 4, the electric push rod two 41 pushes the rotating rod three 42 to drive the frosting piece 1 45 to frictionally contact with the frosting piece 2 46. At the same time, through the meshing connection between the first bevel gear 43 and the second bevel gear 44, the connecting rod 32 can be rotated, and then through the transmission effect of the transmission part 33 and the meshing connection between the gears three 31, the rotation of the two sets of rotating shafts can be controlled at the same time, which facilitates the simultaneous flipping of the two sets of cover plates 8, thereby effectively speeding up the discharge speed, improving the efficiency of subsequent paving, and saving a lot of time.

[0055] Please see attached Figure 1-7 , a method for using a paving grab bucket with a screening function, the steps are as follows:

[0056] S1, when it is necessary to grab the raw materials, first start the electric push rod 12, so that the electric push rod 12 controls the adjustment disk 11 to move inside the screen barrel 4, so as to adjust the internal capacity of the screen barrel 4. After the adjustment is completed, the two groups of grabbing petals 1 are controlled to open by the hydraulic drive device 2 to grab the raw materials. At this time, the raw materials enter the screen barrel 4, and then the two groups of grabbing petals 1 are controlled to close by the hydraulic drive device 2. At this time, the blocks and notches at the inner ends of the two groups of screen barrels 4 are engaged with each other.

[0057] S2, then start the double-axis motor 23, and control the rotation of the rotating rod 1 24, the gear 2 22 and the gear 1 21 through the double-axis motor 23. At this time, the two sets of sieve barrels 4 are engaged with each other, so that the two sets of sieve barrels 4 rotate inside the grabbing flap 1 at the same time to screen the raw materials.

[0058] S3, after the screening is completed, the electric push rod 2 41 controls the rotating rod 3 42 and the frosting sheet 1 45 to move forward, so that the frosting sheet 1 45 and the frosting sheet 2 46 are in friction contact. At this time, the control of the dual-axis motor 23 can make the rotating rod 47 control the rotating rod 3 42 to rotate. When the rotating rod 3 42 rotates, the first bevel gear 43 controls the second bevel gear 44 and the connecting rod 32 to rotate.

[0059] S4, during the rotation of the connecting rod 32, the transmission part 33 is used to make one set of rotating shafts rotate, and the meshing connection between the gears 31 is used to make the two sets of rotating shafts rotate simultaneously, and the cover plate 8 is controlled to open.

[0060] S5, after the cover plate 8 is opened, it is tilted, and the raw materials screened inside the grab petal 1 can be discharged through the discharge port.

[0061] S6, after the raw materials inside the grabbing flaps 1 are discharged, the two groups of grabbing flaps 1 are controlled to open by the hydraulic driving device 2, so that the remaining raw materials inside the screening barrel 4 are discharged, thereby achieving quantitative screening.

[0062] The implementation principle of a paving grab bucket with screening function and a method for using the same in the embodiment of the present application is as follows: when it is necessary to grab the raw materials, first start the electric push rod 12, so that the electric push rod 12 controls the adjustment disk 11 to move inside the screen barrel 4, and adjusts the internal capacity of the screen barrel 4 by adjusting the adjustment disk 11. After the adjustment is completed, the two groups of grab petals 1 are controlled to open by the hydraulic drive device 2 to grab the raw materials. At this time, under the cover of the baffle 6, the raw materials enter the screen barrel 4, and then the two groups of grab petals 1 are controlled to close by the hydraulic drive device 2. At this time, the blocks and notches at the inner ends of the two groups of screen barrels 4 are engaged with each other, and then the dual-axis motor 23 is started, and the rotating rod 1 24, the gear 22 and the gear 1 21 are controlled to rotate by the dual-axis motor 23. At this time, the engagement between the two groups of screen barrels 4 is utilized to make the two groups of screen barrels 4 rotate inside the grab petal 1 at the same time to screen the raw materials;

[0063] After the screening is completed, the electric push rod 2 41 is started, and the electric push rod 2 41 controls the rotating rod 3 42 and the frosting sheet 1 45 to move forward, so that the frosting sheet 1 45 and the frosting sheet 2 46 are in friction contact. At this time, the control of the double-axis motor 23 is used to control the rotating rod 47 to rotate, thereby rotating the rotating rod 3 42. While the rotating rod 3 42 rotates, the first bevel gear 43 controls the second bevel gear 44 and the connecting rod 32 to rotate. At this time, the transmission effect of the transmission part 33 is used to make a set of rotating shafts rotate, and the meshing connection between the gears 3 31 is used to make The two groups of rotations rotate simultaneously to control the cover plate 8 to open. After the cover plate 8 is opened, the electric push rod 2 41 contracts again, and then controls the rotating rod 3 42 to move inside the support plate 48, so that the frosting piece 1 45 and the frosting piece 2 46 are released. At this time, the cover plate 8 is inclined, and the raw materials screened inside the grabbing flap 1 can be discharged through the discharge port. After the raw materials inside the grabbing flap 1 are discharged, the dual-axis motor 23 is turned off at this time, and the two groups of grabbing flaps 1 are controlled to open through the hydraulic drive device 2, so that the remaining raw materials in the screen barrel 4 are discharged, thereby realizing quantitative screening.

[0064] Therefore, in the present invention, a quantitative screening component is provided, and the raw materials are screened by rotating the screen barrel, so that the raw materials can be screened more fully, and the capacity inside the screen barrel can be flexibly adjusted by the action of the adjusting disk to achieve the quantitative measurement of the raw materials, thereby preventing the grab bucket from continuously carrying heavy objects for a long time due to the excessive increase in the oil temperature of the hydraulic oil, which leads to unstable operation of the grab bucket and the falling off of the goods.

[0065] The above are all preferred embodiments of the present application, and the protection scope of the present application is not limited thereto. Therefore, any equivalent changes made according to the structure, shape, and principle of the present application should be included in the protection scope of the present application.

Claims

1. A paving grab bucket with screening function, characterized in that: include: Grasping petals, wherein two groups of grabbing petals are provided, and discharge ports are provided at the inner bottom ends of the two groups of grabbing petals; A hydraulic drive device capable of controlling the simultaneous opening and closing of two sets of gripping petals; A quantitative screening component, wherein the quantitative screening components are respectively arranged inside the two groups of grab petals, and each group of quantitative screening components includes a screen barrel and an adjusting disk, the screen barrel is arranged inside the grab petal, a connecting plate is fixedly connected inside the grab petal, and the connecting plate is rotatably connected to the screen barrel, a frame is arranged on the surface of the screen barrel, and the frame is fixedly connected inside the grab petal, a baffle is fixedly connected to the bottom of the frame, the adjusting disk can move within the screen barrel, an electric push rod 1 is fixedly installed outside the grab petal, and the output end of the electric push rod 1 movably penetrates into the screen barrel and is fixedly connected to the adjusting disk; A discharge assembly, each of which is disposed at the bottom of the discharge port and is used to discharge the screened raw materials. The discharge assembly includes a friction block and a cover plate; A driving unit, arranged on the outer wall of the screen barrel, for controlling the screen barrel to drive the raw materials to rotate and screen, the driving unit comprising a gear 1, a gear 2 and a dual-axis motor; When adjusting the quantity of raw materials, the electric push rod controls the adjustment disk to move inside the screen barrel to adjust the internal capacity of the screen barrel. The hydraulic drive equipment controls the opening of two sets of grabbing petals to complete the grabbing of the raw materials. During the discharging process, the cover plate is controlled to rotate. During this rotation process, the raw materials are quickly discharged through the discharge port, and the raw materials can also be guided for unloading through the cover plate.

2. The paving grab bucket with screening function according to claim 1, characterized in that: The friction block is fixedly connected to the bottom of the grabbing flap to prevent the bottom of the grabbing flap from being worn. The cover plate is located at the bottom of the discharge port, and the cover plate and the friction block are rotatably connected via a rotating shaft.

3. The paving grab bucket with screening function according to claim 2, characterized in that: The outer ends of the rotating shafts are respectively fixedly connected with gear three, and the gear three are meshingly connected with each other.

4. The paving grab bucket with screening function according to claim 3, characterized in that: A plurality of notches are formed at the inner ends of one group of the sieve barrels, and a plurality of blocks are fixedly connected to the inner ends of another group of the sieve barrels, and the blocks can be engaged in the notches.

5. The paving grab bucket with screening function according to claim 4, characterized in that: The gear one is fixedly connected to the outer wall of a group of screen barrels, and the surface of the gear one is meshingly connected with the gear two, a double-axis motor is fixedly installed on the upper surface of a group of the frames, one side output end of the double-axis motor is fixedly connected to the rotating rod one, and the other end of the rotating rod one is fixedly connected to the gear two.

6. The paving grab bucket with screening function according to claim 5 further comprises a linkage assembly, characterized in that: The linkage assembly includes a connecting rod and a transmission part. The connecting rod is rotatably connected inside a group of grabbing petals, and one end of the connecting rod is located on the upper surface of the frame. The transmission part is arranged between the connecting rod and a group of rotating shafts, and the transmission part includes a conveyor belt and a pulley.

7. The paving grab bucket with screening function according to claim 6, characterized in that: The linkage assembly also includes an electric push rod 2, and the electric push rod 2 is fixedly installed on the upper surface of the frame. The output end of the electric push rod 2 is fixedly connected to a rotating rod 3, and the surface of the rotating rod 3 is connected to a first bevel gear through a spline shaft. One end of the connecting rod is fixedly connected to a second bevel gear, and the second bevel gear is meshed with the first bevel gear. The other end of the rotating rod 3 is fixedly connected to a frosted sheet 1, and the other side of the frosted sheet 1 is in friction contact with the frosted sheet 2. The other side of the frosted sheet 2 is fixedly connected to a rotating rod 4, and the other end of the rotating rod 4 is fixedly connected to the output end on the other side of the dual-axis motor.

8. The paving grab bucket with screening function according to claim 7, characterized in that: The upper surface of the frame is fixedly connected with a support plate, the rotating rod is movably inserted inside the support plate, and the first bevel gear is rotatably connected with the support plate.

9. A method for using a paving grab bucket with a screening function, comprising the paving grab bucket with a screening function as claimed in claim 8, characterized in that: The steps are as follows: S1, when it is necessary to grab the raw materials, first start the electric push rod 1, so that the electric push rod 1 controls the adjustment disk to move inside the screen barrel to adjust the internal capacity of the screen barrel. After the adjustment is completed, the two sets of grab petals are controlled to open by the hydraulic drive device to grab the raw materials. At this time, the raw materials enter the screen barrel, and then the two sets of grab petals are controlled to close by the hydraulic drive device. At this time, the blocks and notches at the inner ends of the two sets of screen barrels are engaged with each other. S2, then start the double-axis motor, and control the rotation of the rotating rod 1, gear 2 and gear 1 through the double-axis motor. At this time, the two sets of sieve barrels are engaged with each other, so that the two sets of sieve barrels rotate inside the grabbing flap at the same time to screen the raw materials. S3, after the screening is completed, the electric push rod 2 controls the rotating rod 3 and the frosting sheet 1 to move forward, so that the frosting sheet 1 and the frosting sheet 2 are in friction contact. At this time, the control of the double-axis motor can make the rotating rod 4 control the rotating rod 3 to rotate. When the rotating rod 3 rotates, the first bevel gear controls the second bevel gear and the connecting rod to rotate. S4, during the rotation of the connecting rod, the transmission part is used to make one set of rotating shafts rotate, and the meshing connection between the gears 3 is used to make the two sets of rotating shafts rotate at the same time, and the cover is controlled to open. S5, after the cover is opened, it is tilted, and the raw materials screened inside the grabbing flap can be discharged through the discharge port. S6, after the raw materials inside the grabbing flaps are discharged, the two groups of grabbing flaps are controlled to open by the hydraulic driving device, so that the remaining raw materials inside the screen barrel are discharged, thereby realizing quantitative screening.

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