CN115709478A

CN115709478A - Lotus claw for grabbing waste steel

Info

Publication number: CN115709478A
Application number: CN202310023325.0A
Authority: CN
Inventors: 刘晓军; 李茂才; 丁丽丽
Original assignee: Yantai Jiangtu Machinery Equipment Co ltd
Current assignee: Yantai Jiangtu Machinery Equipment Co ltd
Priority date: 2023-01-09
Filing date: 2023-01-09
Publication date: 2023-02-24
Anticipated expiration: 2043-01-09
Also published as: CN115709478B

Abstract

The invention discloses a lotus claw for grabbing waste steel, which relates to the technical field of manipulators and comprises a connecting seat, wherein a mounting frame is rotatably arranged at the bottom end of the connecting seat, a plurality of fixing shafts distributed at equal intervals are fixedly arranged at the bottom end of the mounting frame, a connecting arm is rotatably sleeved on each fixing shaft, a first rotating shaft and a second rotating shaft are rotatably arranged at one end, away from each fixing shaft, of each connecting arm, the first rotating shaft is in transmission connection with the second rotating shaft, a first chain wheel is fixedly sleeved on the outer wall of each fixing shaft, a second chain wheel is fixedly sleeved on the outer wall of each rotating shaft, the first chain wheel is in transmission connection with the second chain wheel through a chain, the number of effective teeth on the first chain wheel is more than that on the second chain wheel, and a claw piece is fixedly arranged on the outer wall of each rotating shaft. The claw piece can rotate around the connecting arm, so that the connecting arm and the claw piece can be expanded to a larger range, the grabbing range of the lotus claw is improved, full grabbing is facilitated when the claw piece is folded to grab materials, and the operation efficiency is improved.

Description

Lotus claw for grabbing waste steel

Technical Field

The invention relates to the technical field of mechanical arms, in particular to a lotus claw for grabbing waste steel.

Background

The lotus claw is also called a steel grabbing machine, is designed for grabbing bulk or block substances such as stones, waste metals, household garbage and the like, and realizes opening and closing through hydraulically driving a grabbing flap to move so as to grab materials.

Through retrieval, the grant bulletin number is CN207451436U and discloses a lotus claw, including last casing, lower casing, the jack catch, hydraulic cylinder and hydro-cylinder protection casing structure, the mount pad of evenly arranging on the surface of lower casing, hydraulic cylinder is articulated with the upper portion of mount pad, the one end of jack catch is articulated with the lower part of mount pad, hydraulic cylinder's piston rod is connected with the middle part of jack catch through the articulated shaft, hydro-cylinder protection casing structure includes a pair of support backplate and apron, a pair of support backplate sets up the both sides at hydraulic cylinder, the apron sets up the top at hydraulic cylinder, the inner of support backplate is installed on the rotation axis, the outer end is installed on the articulated shaft, the upper portion of a pair of support backplate inner is through interior apron hub connection, the inner of apron is equipped with the inner axle sleeve.

The jack catch setting is grabbed to current lotus flower generally is that the bending degree is close to the vertically arc setting, the both ends point place tangent line of jack catch is nearly the right angle, so that when folding the jack catch, form the parking space of waste material between a plurality of jack catches, current common jack catch structure on the market generally all is the rigidity material, open and shut through pneumatic cylinder direct drive jack catch, because the shape of jack catch is crooked arc, consequently expand the back completely at the jack catch, refer to figure 1, the tip of jack catch can be in and be close the vertically state, consequently actual snatching the scope and is limited only in the length of jack catch first half part horizontal part, it is less to snatch the scope, consequently draw in the in-process of grabbing the material in the jack catch at the jack catch, often be difficult to fully grab, influence the operating efficiency.

Disclosure of Invention

The invention aims to solve the problems that the front section of the existing lotus claw cannot be expanded outwards, the grabbing range is small, the lotus claw is difficult to grab when the lotus claw is folded to grab materials, and the working efficiency is influenced.

In order to achieve the purpose, the invention adopts the following technical scheme:

the utility model provides a be used for waste steel to snatch and grab with lotus flower, includes the connecting seat, the connecting seat bottom is rotated and is provided with the mounting bracket, the mounting bracket bottom mounting is provided with the fixed axle that a plurality of equidistance distribute, it is equipped with the linking arm to rotate the cover on the fixed axle, the linking arm is kept away from fixed axle one end and is rotated and be provided with pivot one and pivot two, pivot one is connected with two transmissions in the pivot, the fixed cover of fixed axle outer wall is equipped with sprocket one, the fixed cover of a pivot outer wall is equipped with sprocket two, connect through chain drive between sprocket one and the sprocket two, just the number of effective teeth on the sprocket one is more than sprocket two, the fixed claw piece that is provided with of the outer wall in pivot, be equipped with the pneumatic cylinder that is used for driving the linking arm between mounting bracket and the pivot one.

Preferably, the mounting bracket includes the erection column of perpendicular setting, erection column outer peripheral face equidistance distributes there are the multiunit mounting panel, the fixed axle is fixed to be set up between two mounting panels of same group.

Preferably, the cylinder body of pneumatic cylinder rotates and sets up in the mounting panel top, the flexible end of pneumatic cylinder is fixed and is provided with the U template, the U template is rotated with a pivot and is connected, forms by the pneumatic cylinder is the triangle-shaped structure of hypotenuse.

Preferably, the first chain wheel and the second chain wheel are both double-row chain wheels.

Preferably, the first rotating shaft and the second rotating shaft are both fixedly sleeved with transmission gears, and the two transmission gears are in meshed connection.

Preferably, the claw piece is including the stiffener and the grab lamella that are the arc setting, stiffener top and two fixed connection of pivot, grab the fixed inside wall that sets up in the stiffener of lamella.

Preferably, the grab flap is petal form with a downward tip, when a plurality of grab flaps are combined, the side edges of two adjacent grab flaps are attached to each other, and the grab flaps are bulged outwards.

Preferably, the outward surface of the grab flap is rotatably provided with two auxiliary claws which are symmetrically arranged, and a spring is arranged between each auxiliary claw and the reinforcing rod.

Preferably, a hydraulic motor used for driving the mounting column to rotate is fixedly arranged on the connecting seat, a driving gear is fixedly arranged at the output end of the hydraulic motor, a toothed ring is fixedly arranged on the outer wall of the mounting column, and the driving gear is meshed with the toothed ring.

Preferably, the connecting seat bottom mounting is provided with the spliced pole, the mounting hole has been seted up at the mounting column center, the mounting hole inner wall is provided with the annular, the fixed spacing ring that is provided with of spliced pole outer wall, the spliced pole extends into in the mounting hole, just the spacing ring rotates with the annular to be connected.

Compared with the prior art, the invention has the following advantages:

1. according to the lotus flower grabbing claw, the second rotating shaft is arranged, so that the claw piece can rotate around the connecting arm, the first chain wheel and the second chain wheel which are arranged on the first fixing shaft and the first rotating shaft are different in effective tooth number, when the connecting arm rotates around the fixing shaft, the first rotating shaft is driven to rotate through the chain, the second rotating shaft rotates, therefore, when the connecting arm rotates upwards, the claw piece is controlled to rotate upwards, the connecting arm and the claw piece are expanded to a larger range, the grabbing range of the lotus flower grabbing is improved, full grabbing when the claw piece is folded in to grab materials is facilitated, the operation efficiency is improved, and the problems that the front section of the existing lotus flower grabbing claw cannot be expanded outwards, the grabbing range is small, full grabbing is difficult to achieve when the lotus flower grabbing claw materials is folded in and the operation efficiency is affected are solved.

2. According to the invention, the auxiliary claws and the springs are arranged, so that the auxiliary claws are outwards ejected when the claw members are in an open state, the grabbing range of the claw members is larger, the grabbing effect is better, the auxiliary claws on two adjacent claw members are mutually pressed when the claw members are folded, the springs are compressed, and the auxiliary claws are retracted at the moment, so that the bottom of the closed claw members is favorably ensured, and the risk of falling of grabbed materials is reduced.

Drawings

FIG. 1 is a schematic view of a lotus claw in an unfolded state, which is common in the prior art;

FIG. 2 is a schematic structural view of a lotus gripping state for gripping waste steel materials according to the present invention;

FIG. 3 is a schematic structural view of an expanded state of the lotus claw for gripping waste steel materials, which is provided by the invention;

FIG. 4 is a schematic structural diagram of a lotus claw mounting rack for grabbing waste steel materials, which is provided by the invention;

FIG. 5 is a schematic structural diagram of a connection relationship among a connecting arm, a hydraulic cylinder and a mounting rack in the lotus claw for grabbing waste steel according to the present invention;

FIG. 6 is a first structural schematic view of a lotus claw for grabbing waste steel materials, according to the present invention;

FIG. 7 is a second schematic structural view of a lotus claw for gripping waste steel materials, according to the present invention;

fig. 8 is a schematic structural diagram of a connection relationship between a mounting frame and a connecting seat in the lotus claw for grabbing waste steel materials.

In the figure: 1. a connecting seat; 2. a mounting frame; 3. a fixed shaft; 4. a connecting arm; 5. a first rotating shaft; 6. a second rotating shaft; 7. a chain wheel I; 8. a second chain wheel; 9. a hydraulic cylinder; 10. a claw member; 11. mounting a column; 12. mounting a plate; 13. a U-shaped plate; 14. a transmission gear; 15. a reinforcing rod; 16. grasping a valve; 17. an auxiliary claw; 18. a hydraulic motor; 19. a drive gear; 20. and (4) a toothed ring.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments.

In the description of the present invention, it is to be understood that the terms "upper", "lower", "front", "rear", "left", "right", "top", "bottom", "inner", "outer", and the like, are used in the orientations and positional relationships indicated in the drawings, which are based on the orientations and positional relationships indicated in the drawings, and are used for convenience of description and simplicity of description, but do not indicate or imply that the devices or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, are not to be construed as limiting the present invention.

Referring to fig. 2-3, a be used for waste material steel to snatch and grab with lotus flower, including connecting seat 1, connecting seat 1 is connected with the arm of digging the machine, makes the lotus flower grab and can cooperate the machine of digging to use, and connecting seat 1 bottom is rotated and is provided with mounting bracket 2, and mounting bracket 2 rotates and can change the lotus flower and grab the direction of snatching, is favorable to diversified to different operational environment and operation demand to use, and 2 bottom mounting of mounting bracket are provided with a plurality of equidistance distribution's fixed axle 3, and fixed axle 3 sets up four at least, and fixed axle 3 is in the horizontality.

Referring to fig. 4, the mounting bracket 2 includes a vertically arranged mounting post 11, the mounting post 11 is rotatably connected with the connecting seat 1, a plurality of groups of mounting plates 12 are equidistantly distributed on the outer peripheral surface of the mounting post 11, the fixing shaft 3 is fixedly arranged between the two mounting plates 12 in the same group, and the fixing shaft 3 is located at the bottom of the mounting plates 12.

Referring to fig. 2, 3 and 5, a connecting arm 4 is sleeved on the fixed shaft 3 in a rotating mode, the connecting arm 4 can rotate around the fixed shaft 3, lotus grabbing opening and closing are achieved through rotation of the connecting arm 4, one end, far away from the fixed shaft 3, of the connecting arm 4 is provided with a first rotating shaft 5 and a second rotating shaft 6 in a rotating mode, the first rotating shaft 5 and the second rotating shaft 6 are arranged in parallel, a first chain wheel 7 is sleeved on the outer wall of the fixed shaft 3 in a fixing mode, a second chain wheel 8 is fixedly arranged on the outer wall of the first rotating shaft 5, the first chain wheel 7 and the second chain wheel 8 are connected through chain transmission, when the connecting arm 4 rotates around the axis of the fixed shaft 3, the position of the fixed shaft 3 is unchanged, the chain moves around the first chain wheel 7, the length of the chain is unchanged, when the chain moves, the second chain wheel 8 can be driven to rotate, the second chain wheel 8 drives the first rotating shaft 5 to rotate, the first rotating shaft 5 is connected with the second rotating shaft 6 in a transmission mode, when the first rotating shaft 5 rotates, the second rotating shaft 6 in a reverse direction, the outer wall of the second rotating shaft 6 is fixedly provided with the second rotating, the second rotating shaft 6, the rotating shaft is driven to rotate, the second rotating shaft 6, the second rotating shaft 10 can overturn the large angle of the first rotating part 10, the large angle of the second rotating angle is achieved, the large angle of the lotus grabbing range of the lotus grabbing device is beneficial to the lotus grabbing range, the lotus grabbing convenience of the lotus grabbing is achieved, and the lotus grabbing efficiency of the lotus grabbing is improved.

Referring to fig. 5, the first rotating shaft 5 and the second rotating shaft 6 are both fixedly sleeved with a transmission gear 14, the two transmission gears 14 are meshed and connected, and when the first rotating shaft 5 rotates, the second rotating shaft 6 is driven to rotate reversely through the transmission gear 14.

And a hydraulic cylinder 9 for driving the connecting arm 4 is arranged between the mounting frame 2 and the first rotating shaft 5, and the connecting arm 4 is controlled to rotate around the fixed shaft 3 by stretching and contracting the hydraulic cylinder 9.

During specific implementation, the hydraulic cylinder 9 is shortened, the connecting arm 4 is driven to rotate upwards, in the process that the connecting arm 4 rotates upwards, the chain moves under the action of the first chain wheel 7 and drives the second chain wheel 8 to rotate in the forward direction, the second chain wheel 8 rotates to drive the first rotating shaft 5 to rotate, the first rotating shaft 5 rotates to drive the second rotating shaft 6 to rotate in the reverse direction through the transmission gear 14, the claw piece 10 is enabled to overturn upwards, the claw piece 10 is enabled to be unfolded until the connecting arm 4 is unfolded, the actual grabbing range of the lotus flower is changed into a circular range taking the sum of the length of the connecting arm 4 and the length of the claw piece 10 as the radius, the grabbing range of the lotus flower is enabled to be enlarged, the lotus flower is enabled to be easier to grab when grabbing materials, and the purpose of improving the operation efficiency is achieved.

After the lotus claw is unfolded, the material pile is aligned, the hydraulic cylinder 9 is started to extend to drive the connecting arm 4 to rotate downwards, in the process that the connecting arm 4 rotates downwards, the chain moves under the action of the first chain wheel 7 and drives the second chain wheel 8 to rotate in the reverse direction, the second chain wheel 8 rotates to drive the first rotating shaft 5 to rotate, the first rotating shaft 5 rotates to drive the second rotating shaft 6 to rotate in the forward direction through the transmission gear 14, the claw piece 10 is enabled to turn downwards, and when the connecting arm 4 is folded inwards to the initial position, the claw piece 10 is also synchronously folded inwards and folded together at the central position, and the material grabbing is completed.

The effective tooth number on the chain wheel I7 is more than the chain wheel II 8, the included angle between the chain wheel I4 and the vertical line is smaller in the initial state, the included angle between the claw piece 10 and the vertical line is larger in the folding state, when the effective tooth number of the chain wheel I7 is more than the chain wheel II 8, after the chain wheel I7 rotates by a certain angle, the rotating angle of the chain wheel II 8 is larger than that of the chain wheel I7, so that the angle difference between the chain wheel I4 and the claw piece 10 is made up, when the lotus flower grab finishes unfolding, the claw piece 10 can extend outwards by a larger range, when the lotus flower grab folds, the claw piece 10 can rotate faster, folding and resetting is finished, the chain wheel I7 and the chain wheel II 8 are double-row chain wheels, the strength between the fixed shaft 3 and the rotating shaft I5 can be improved through the arrangement of the double-row chain wheels, and the normal operation of the material grabbing process is kept.

Referring to fig. 6-7, claw 10 is including the stiffener 15 and the lamella 16 of grabbing that are the arc setting, and stiffener 15 is favorable to improving the intensity of grabbing of claw 10, and stiffener 15 top and two 6 fixed connection in pivot, grab the fixed inside wall that sets up in stiffener 15 of lamella 16, rotate through stiffener 15 and drive the lamella 16 of grabbing and snatch the material, set up the lamella 16 of grabbing and be favorable to improving the lifting surface area when snatching the material, more be favorable to snatching scattered bits.

Referring to fig. 6-7, grab lamella 16 and be most advanced downward petal form, most advanced setting down is favorable to grabbing lamella 16 and stretch into the garrulous material and pile in, is favorable to grabbing more materials, improves and snatchs efficiency, and a plurality of grab lamella 16 are when merging, and the side of two adjacent grab lamella 16 is laminated mutually, improves the parcel nature after the material snatchs, reduces the risk that the material spills from grabbing lamella 16 below, and grab lamella 16 outwards rises, is favorable to improving the capacity of the storage space that grabs lamella 16 and merge the back formation, further improves and grabs the material volume.

Referring to fig. 6-7, the outward surface of the grab flap 16 is rotatably provided with two auxiliary claws 17 which are symmetrically arranged, a spring is arranged between the auxiliary claws 17 and the reinforcing rod 15, after the grab flap 16 is unfolded, the auxiliary claws 17 are unfolded outwards under the action of the spring to form a larger grabbing surface, when the surface accumulated materials are less, the grab flap 16 and the auxiliary claws 17 grab in a clinging manner, the larger grabbing surface is more favorable for grabbing the materials, and when the grab flap 16 is folded, the side walls of the auxiliary claws 17 on the adjacent grab flaps 16 are abutted to compress the spring, and meanwhile, the auxiliary claws 17 are retracted, so that the grab flap 16 can still be polymerized, and the wrapping property of the bottom of the folded grab flap 16 is ensured.

Referring to fig. 5, the cylinder body of the hydraulic cylinder 9 is rotatably arranged at the top end of the mounting plate 12, a U-shaped plate 13 is fixedly arranged at the telescopic end of the hydraulic cylinder 9, through the arrangement of the U-shaped plate 13, two ends of the U-shaped plate 13 are positioned at two sides of a chain, the situation that the chain is blocked due to movement of the chain due to blockage of the U-shaped plate 13 can be avoided, the U-shaped plate 13 is rotatably connected with a first rotating shaft 5, a triangular structure with the hydraulic cylinder 9 as a bevel edge is formed, when the hydraulic cylinder 9 is shortened, the U-shaped plate 13 at the telescopic end of the hydraulic cylinder 9 drives the connecting arm 4 to rotate upwards, so that the connecting arm 4 is unfolded, and when the hydraulic cylinder 9 is extended, the U-shaped plate 13 at the telescopic end of the hydraulic cylinder 9 drives the connecting arm 4 to rotate downwards, so that the connecting arm 4 is folded.

Refer to fig. 8, the fixed hydraulic motor 18 that is used for driving 11 pivoted of erection column that is provided with on connecting seat 1, the fixed drive gear 19 that is provided with of output of

hydraulic motor

18, 11 outer walls of erection column are fixed and are provided with ring gear 20, drive gear 19 is connected with the meshing of ring gear 20, it rotates to drive gear 19 through hydraulic motor 18, drive gear 19 drives ring gear 20 and rotates, make erection column 11 rotate, realize that mounting bracket 2 wholly rotates, be favorable to adjusting claw 10 snatch the angle, and then the material demand of grabbing under the different scenes of adaptation.

Referring to fig. 8, 1 bottom mounting of connecting seat is provided with the spliced pole, the mounting hole has been seted up at 11 centers of erection column, the mounting hole inner wall is provided with the annular, the fixed spacing ring that is provided with of spliced pole outer wall, the spliced pole extends into in the mounting hole, and the spacing ring rotates with the annular to be connected, through spliced pole and mounting hole cooperation, it is spacing to carry out the circumference of mounting bracket 2, reduce the risk that mounting bracket 2 takes place the circumference and deflects, cooperate through spacing ring and annular, it is spacing to carry out the axis to mounting bracket 2, reduce the risk that mounting bracket 2 takes place the axial skew.

The specific working principle of the invention is as follows:

when the lotus grabbing device is used, the connecting seat 1 is installed at the end part of a mechanical arm of an excavator, the hydraulic cylinder 9 is controlled to be shortened, the connecting arm 4 is driven to rotate upwards, in the process that the connecting arm 4 rotates upwards, a chain moves under the action of the first chain wheel 7 and drives the second chain wheel 8 to rotate in the forward direction, the second chain wheel 8 rotates to drive the first rotating shaft 5 to rotate, the first rotating shaft 5 rotates to drive the second rotating shaft 6 to rotate in the reverse direction through the transmission gear 14, the claw piece 10 turns upwards until the connecting arm 4 is unfolded, the claw piece 10 is unfolded, the actual grabbing range of lotus grabbing is changed into a circular range taking the sum of the length of the connecting arm 4 and the length of the claw piece 10 as the radius, the grabbing range of the lotus grabbing is expanded, the lotus grabbing device is easier to grab when the lotus grabbing materials, the aim of improving the operation efficiency is achieved, after the claw piece 10 is unfolded, the auxiliary claw 17 is outwards unfolded under the action of the spring, the grabbing petals 16 and the auxiliary claws 17 are matched to form a larger grabbing surface, and when the materials are less accumulated on the ground, the larger grabbing surface is more beneficial to the grabbing of the materials;

after the lotus claw is unfolded, aligning the material pile, starting a hydraulic cylinder 9 to extend to drive a connecting arm 4 to rotate downwards, and in the process that the connecting arm 4 rotates downwards, a chain moves under the action of a first chain wheel 7 and drives a second chain wheel 8 to rotate in the reverse direction, the second chain wheel 8 rotates to drive a first rotating shaft 5 to rotate, the first rotating shaft 5 rotates to drive a second rotating shaft 6 to rotate in the forward direction through a transmission gear 14, so that a claw piece 10 turns downwards, until the connecting arm 4 is folded inwards to an initial position, the claw piece 10 is also synchronously folded inwards to be folded at a central position, when the claw petals 16 are folded, the side walls of auxiliary claws 17 on adjacent claw petals 16 abut against each other to compress a spring, and meanwhile, the auxiliary claws 17 are retracted to enable the claw petals 16 to be still polymerized, so that the wrapping performance of the bottom of the folded claw petals 16 is ensured, and the material grabbing is completed;

when the angle is snatched in needs adjustment, start hydraulic motor 18, hydraulic motor 18 rotates and drives drive gear 19 and rotate, and drive gear 19 drives ring gear 20 and rotates, makes erection column 11 rotate, realizes that mounting bracket 2 wholly rotates, adapts to the material demand of grabbing under the different scenes.

The above description is only for the preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art should be considered to be within the technical scope of the present invention, and the technical solutions and the inventive concepts thereof according to the present invention should be equivalent or changed within the scope of the present invention.

Claims

1. The utility model provides a be used for waste steel to snatch and grab with lotus flower, includes connecting seat (1), connecting seat (1) bottom is rotated and is provided with mounting bracket (2), its characterized in that, mounting bracket (2) bottom mounting is provided with fixed axle (3) that a plurality of equidistance distribute, it is equipped with linking arm (4) to rotate the cover on fixed axle (3), fixed axle (3) one end is kept away from in linking arm (4) and is rotated and be provided with pivot one (5) and pivot two (6), pivot one (5) is connected with two (6) transmissions in the pivot, fixed axle (3) outer wall fixed cover is equipped with sprocket one (7), pivot one (5) outer wall fixed cover is equipped with sprocket two (8), connect through chain drive between sprocket one (7) and sprocket two (8), just effective number of teeth on sprocket one (7) is greater than sprocket two (8), pivot two (6) outer wall are fixed and are provided with claw spare (10), be equipped with pneumatic cylinder (9) that are used for driving linking arm (4) between mounting bracket (2) and pivot one (5).

2. The lotus claw for grabbing the waste steel according to claim 1, wherein the mounting frame (2) comprises vertically arranged mounting columns (11), a plurality of groups of mounting plates (12) are equidistantly distributed on the outer peripheral surface of each mounting column (11), and the fixing shaft (3) is fixedly arranged between two mounting plates (12) in the same group.

3. The lotus claw for grabbing waste steel products according to claim 2 is characterized in that a cylinder body of the hydraulic cylinder (9) is rotatably arranged at the top end of the mounting plate (12), a U-shaped plate (13) is fixedly arranged at the telescopic end of the hydraulic cylinder (9), and the U-shaped plate (13) is rotatably connected with the first rotating shaft (5) to form a triangular structure with the hydraulic cylinder (9) as a bevel edge.

4. The lotus claw for grabbing waste steel products as claimed in claim 1, wherein the first chain wheel (7) and the second chain wheel (8) are both double-row chain wheels.

5. The lotus claw for grabbing waste steel products as claimed in claim 1, wherein the first rotating shaft (5) and the second rotating shaft (6) are both fixedly sleeved with a transmission gear (14), and the two transmission gears (14) are meshed and connected.

6. The lotus claw for grabbing the waste steel materials is characterized in that the claw piece (10) comprises a reinforcing rod (15) and a claw flap (16) which are arranged in an arc shape, the top end of the reinforcing rod (15) is fixedly connected with the second rotating shaft (6), and the claw flap (16) is fixedly arranged on the inner side wall of the reinforcing rod (15).

7. A lotus claw for catching waste steel material according to claim 6, wherein the claw petals (16) are petal-shaped with the tip end facing downwards, when a plurality of the claw petals (16) are combined, the side edges of two adjacent claw petals (16) are jointed, and the claw petals (16) are bulged outwards.

8. The lotus claw for grabbing waste steel materials according to claim 7, characterized in that two symmetrically arranged auxiliary claws (17) are rotatably arranged on the outward surface of the grab flap (16), and a spring is arranged between the auxiliary claws (17) and the reinforcing rod (15).

9. The lotus claw for grabbing waste steel materials is characterized in that a hydraulic motor (18) for driving a mounting column (11) to rotate is fixedly arranged on the connecting seat (1), a driving gear (19) is fixedly arranged at the output end of the hydraulic motor (18), a toothed ring (20) is fixedly arranged on the outer wall of the mounting column (11), and the driving gear (19) is meshed with the toothed ring (20).

10. The lotus claw for grabbing waste steel materials according to claim 2, wherein a connecting column is fixedly arranged at the bottom end of the connecting seat (1), a mounting hole is formed in the center of the mounting column (11), an annular groove is formed in the inner wall of the mounting hole, a limiting ring is fixedly arranged on the outer wall of the connecting column, the connecting column extends into the mounting hole, and the limiting ring is rotatably connected with the annular groove.