阅读说明：本技术 大型研磨设备 (Large-scale grinding equipment ) 是由 杨洪波 于 2021-08-24 设计创作，主要内容包括：本发明涉及一种大型研磨设备,包括机架、多头研磨装置、大齿盘和料桶,所述的机架内部下层设有两个料桶,机架内部上层设有三个呈环状阵列的多头研磨装置,多头研磨装置是多级传动的行星齿轮机构,其工作端向下,与工作端相对的另一端为主轴,主轴向上延伸至机架外,主轴上平键连接有自转伞齿轮减速电机,三台自转伞齿轮减速电机呈120度向心摆放,其工作端向外,在自转伞齿轮减速电机与机架上表面之间设置有一个大齿盘,大齿盘为环状,其上、下两侧分别固定连接有固定板,上侧为上固定板,下侧为下固定板,多头研磨装置的主轴同时穿过上固定板和下固定板,并与自转伞齿轮减速电机连接,机架上表面上设有与大齿盘相对应的圆孔。(The invention relates to large-scale grinding equipment, which comprises a rack, a multi-head grinding device, a big fluted disc and charging barrels, wherein two charging barrels are arranged at the lower layer in the rack, three multi-head grinding devices in an annular array are arranged at the upper layer in the rack, the multi-head grinding device is a multi-stage transmission planetary gear mechanism, the working end of the multi-head grinding device is downward, the other end opposite to the working end is a main shaft, the main shaft extends upwards to the outside of the rack, a flat key on the main shaft is connected with an autorotation bevel gear reduction motor, the three autorotation bevel gear reduction motors are arranged centripetally at 120 degrees, the working end of the autorotation bevel gear reduction motor is outward, the big fluted disc is arranged between the autorotation bevel gear reduction motor and the upper surface of the rack, the big fluted disc is annular, fixing plates are respectively and fixedly connected at the upper side and the lower side, an upper fixing plate is arranged at the upper side, a lower fixing plate is arranged at the lower side, and the main shaft of the multi-head grinding device simultaneously penetrates through the upper fixing plate and the lower fixing plate, and is connected with a speed reducing motor of the autorotation bevel gear, and the upper surface of the frame is provided with a round hole corresponding to the large fluted disc.)

1. A large-scale grinding device comprises a rack (1), a multi-head grinding device (2), a large fluted disc (3) and charging barrels (4), and is characterized in that two charging barrels (4) are arranged at the lower layer in the rack (1), three multi-head grinding devices (2) in an annular array are arranged at the upper layer in the rack (1), the multi-head grinding device (2) is a multi-stage transmission planetary gear mechanism, the working end of the multi-head grinding device faces downwards, the other end opposite to the working end is a main shaft, the main shaft extends upwards to the outside of the rack (1), a flat key on the main shaft is connected with a self-rotation bevel gear reducing motor (5), the three self-rotation bevel gear reducing motors (5) are arranged centripetally at 120 degrees, the working end of the multi-head grinding device faces outwards, a large fluted disc (3) is arranged between the self-rotation bevel gear reducing motor (5) and the upper surface of the rack (1), the large fluted disc (3) is annular, and fixing plates are fixedly connected to the upper side and the lower side of the large fluted disc (3), the upper side is provided with an upper fixing plate (3a), the lower side is provided with a lower fixing plate (3b), a main shaft of the multi-head grinding device (2) simultaneously penetrates through the upper fixing plate (3a) and the lower fixing plate (3b) and is connected with a self-rotation bevel gear speed reduction motor (5), a round hole corresponding to the big fluted disc (3) is arranged on the upper surface of the rack (1), and the diameter of the round hole exceeds the diameter of a circle formed by the main shafts of the three multi-head grinding devices (2) and is smaller than the diameter of the big fluted disc (3); the upper fixing plate (3a) is connected with a revolution bevel gear speed reducing motor (6), the revolution bevel gear speed reducing motor (6) is connected with a revolution gear (7), and the revolution gear (7) is in meshing transmission with the big fluted disc (3); and a big fluted disc positioning device (50) is arranged on the upper fixing plate (3 a).

2. The large-scale grinding equipment according to claim 1, characterized in that the multi-head grinding device (2) comprises a primary main shaft (11), a linkage device (8), a secondary main shaft (12), a transmission shaft (13) and a connecting device (18), wherein the primary main shaft (11) is connected with a primary linkage device (9), the primary linkage device (9) is provided with a plurality of primary planet gears (15), a primary sun gear (14) is arranged among the plurality of primary planet gears (15), and the primary sun gear (14) and the primary planet gears (15) are in meshing transmission; the upper end of the secondary main shaft (12) is matched with the primary planetary gear (15) through a key, one end, opposite to the primary planetary gear (15), of the secondary main shaft (12) is connected with a secondary linkage device (10), the secondary linkage device (10) is provided with a plurality of secondary planetary gears (17), a secondary sun gear (16) is arranged among the plurality of secondary planetary gears (17), and the secondary sun gear (16) and the secondary planetary gears (17) are in meshed transmission; the upper end of the transmission shaft (13) is matched with the secondary planetary gear (17) through a key, and one end of the transmission shaft (13) opposite to the secondary planetary gear (17) is connected with a connecting device (18);

the primary linkage device (9) comprises a first flange (24) and a first rotary table (26), the tail end of the primary main shaft (11) is fixedly connected with the first flange (24) through a spline, the outer side of the first flange (24) is connected with the first rotary table (26) in a welding mode, the first flange (24) and the first rotary table (26) are coaxial with the primary main shaft (11) and rotate along with the rotation of the primary main shaft (11), and the primary planetary gear (15) is arranged on the upper portion of the first rotary table (26); the secondary linkage device (10) comprises a second flange (25) and a secondary turntable (27), the end, opposite to the primary planetary gear (15), of the secondary main shaft (12) is fixedly connected with the second flange (25) through a spline, the outer side of the second flange (25) is connected with the secondary turntable (27) in a welding mode, the second flange (25) and the secondary turntable (27) are coaxial with the secondary main shaft (11) and rotate along with the rotation of the secondary main shaft (12), and the secondary planetary gear (17) is arranged on the upper portion of the secondary turntable (27);

the middle section of the outer ring of the primary main shaft (11) is sleeved with a flange sleeve I (32) in a matching manner through a bearing I (30), the flange sleeve I (32) is fixedly connected with the primary sun gear (14) through a primary sun gear fixing plate (22), the upper part of the inner ring of the flange sleeve I (32) is provided with a step I (33) protruding inwards, the opposite end of a spline of the primary main shaft (11) is provided with a step II (34) protruding outwards, and a bearing II (35) is arranged between the upper surface of the step I (33) and the lower surface of the step II (34); the outer ring of the secondary main shaft (12) is sleeved with a second flange sleeve (42) in a matching mode through a third bearing (40), the second flange sleeve (42) is fixedly connected with the secondary sun gear (16) through a secondary sun gear fixing plate (23), a third inward-protruding step (43) is arranged on the upper portion of the inner ring of the second flange sleeve (42), a fourth outward-protruding step (44) is arranged at the opposite end of a spline of the secondary main shaft (12), and a fourth bearing (45) is arranged between the upper surface of the third step (43) and the lower surface of the fourth step (44).

3. The large grinding equipment according to claim 1, wherein the large fluted disc positioning device (50) comprises a positioning sleeve positioning device (51) and an induction rod positioning device (52), the positioning sleeve positioning device (51) comprises three positioning sleeves (53) uniformly arranged on the outer edge of the large fluted disc (3) and an air cylinder (54) fixed on the rack (1), the air cylinder (54) is provided with an ejector rod (55) matched with the positioning sleeves (53), the edge of the large fluted disc (3) is fixedly connected with a connecting plate (58), the connecting plate (58) extends outwards from the large fluted disc (3), and the positioning sleeves (53) are fixedly connected thereon; the induction rod positioning device (52) comprises three sets of induction adjusting rods (56) which are uniformly arranged on the outer edge of the big fluted disc (3) and an induction rod fixing plate (57) which is arranged above the induction adjusting rods; the position relation between the cylinder (54) and the induction rod fixing plate (57) is equal to the position relation between the positioning sleeve (53) and the induction adjusting rod (56).

4. The large-scale grinding equipment according to claim 1, characterized in that the size of the charging basket (4) is matched with the multi-head grinding device (2), the two charging baskets (4) are placed on the opposite sides close to the opening side of the frame (1), a central pillar (59) is arranged in the middle of the charging basket (4), a hydraulic oil cylinder (58) is arranged in the central pillar (59), I-shaped steel (60) is arranged around the charging basket, and a roller set (61) is arranged between the I-shaped steel (60) and the charging basket.

Technical Field

The invention relates to the field of mechanical equipment, in particular to large-scale grinding equipment.

Background

At present, when surface roughness and finish degree treatment is carried out on a formed workpiece, some methods are soaking by adopting chemical agents, but the defects are that the operation is complex, chemical pollution is easy to generate, and some methods are polishing the workpiece by adopting a manual handheld polishing machine, but the defects are that the danger is large, the hands of workers are easy to hurt, the comprehensive surface treatment is difficult to be carried out on the surface of the workpiece, the polishing efficiency of the manual handheld polishing machine is low, the polishing speed is low, and the progress is slow.

Disclosure of Invention

In order to solve the problems, the invention provides a safe and efficient large-scale grinding device.

In order to achieve the purpose, the invention designs a large-scale grinding device, which comprises a frame, a multi-head grinding device, a big fluted disc and a charging basket, wherein two charging baskets are arranged at the lower layer in the frame, three multi-head grinding devices in an annular array are arranged at the upper layer in the frame, the multi-head grinding device is a multi-stage transmission planetary gear mechanism, the working end of the multi-head grinding device is downward, the other end opposite to the working end is a main shaft, the main shaft extends upwards to the outside of the frame, an autorotation bevel gear reduction motor is connected to the upper flat key of the main shaft, the three autorotation bevel gear reduction motors are arranged in a 120-degree centripetal manner, the working ends of the three autorotation bevel gear reduction motors are outward, the big fluted disc is arranged between the autorotation bevel gear reduction motor and the upper surface of the frame, the big fluted disc is annular, fixing plates are fixedly connected to the upper side and the lower side of the big fluted disc, an upper fixing plate is arranged at the upper side, a lower fixing plate is arranged at the lower side, and the main shaft of the multi-head grinding device simultaneously penetrates through the upper fixing plate and the lower fixing plate, the diameter of the round hole exceeds the diameter of a circle formed by the main shafts of the three multi-head grinding devices and is smaller than that of the big fluted disc; the upper fixing plate is connected with a revolution bevel gear speed reducing motor, the revolution bevel gear speed reducing motor is connected with a revolution gear, and the revolution gear is in meshing transmission with the large gear disc; and a large fluted disc positioning device is arranged on the upper fixing plate. The structure is characterized in that a revolution gear on the big gear plate provides revolution power for the multi-head grinding device, so that a rotary structure of a plurality of multi-head grinding devices is formed, three autorotation bevel gear speed reducing motors provide autorotation force for the multi-head grinding device, the autorotation bevel gear speed reducing motors are finally converted into rotation required by grinding of a workpiece, and the positioning device provides positioning for the rotation of the big gear plate.

In order to enable the multi-head grinding device to obtain more working ports, the multi-head grinding device comprises a primary main shaft, a linkage device, a secondary main shaft, a transmission shaft and a connecting device, wherein the primary main shaft is connected with the primary linkage device, the primary linkage device is provided with a plurality of primary planet gears, a primary sun gear is arranged among the plurality of primary planet gears, and the primary sun gear and the primary planet gears are in meshed transmission; the upper end of the secondary main shaft is matched with the primary planetary gear through a key, one end of the secondary main shaft, which is opposite to the primary planetary gear, is connected with a secondary linkage device, a plurality of secondary planetary gears are arranged on the secondary linkage device, a secondary sun gear is arranged among the plurality of secondary planetary gears, and the secondary sun gear and the secondary planetary gears are in mutual meshing transmission; the upper end of the transmission shaft is matched with the secondary planetary gear through a key, and one end, opposite to the secondary planetary gear, of the transmission shaft is connected with a connecting device. The structure is characterized in that the design of the planetary gear enables the planetary gear to rotate and revolve at the same time, and the design of the multi-stage planetary gear enables the equipment to have a plurality of working shafts at the same time.

In order to enable the main shaft to be linked with the planetary gear, the primary linkage device comprises a first flange and a primary turntable, the tail end of the primary main shaft is fixedly connected with the first flange through a spline, the outer side of the first flange is connected with the primary turntable in a welding mode, the first flange and the primary turntable are coaxial with the primary main shaft and rotate along with the rotation of the primary main shaft, and the primary planetary gear is arranged at the upper portion of the primary turntable; the second-stage linkage device comprises a second flange and a second-stage turntable, wherein the end, opposite to the first-stage planetary gear, of the second-stage main shaft is fixedly connected with the second flange through a spline, the outer side of the second flange is welded with the second-stage turntable, the second flange and the second-stage turntable are coaxial with the second-stage main shaft and rotate along with the rotation of the second-stage main shaft, and the second-stage planetary gear is arranged on the upper portion of the second-stage turntable. Such a structure allows the rotation of the main shaft to be linked to the planetary gear, giving the planetary gear revolution, while the meshing of the planetary gear with the sun gear gives it rotation.

In order to support the main shaft and the sun gear, the middle section of the outer ring of the primary main shaft is sleeved with a first flange sleeve in a matching way through a first bearing, the first flange sleeve is fixedly connected with the primary sun gear through a primary sun gear fixing plate, the upper part of the inner ring of the first flange sleeve is provided with a first step protruding inwards, the opposite end of a spline of the primary main shaft is provided with a second step protruding outwards, and a second bearing is arranged between the upper surface of the first step and the lower surface of the second step; the outer ring of the second-stage main shaft is sleeved with a second flange sleeve through a third bearing in a matching manner, the second flange sleeve is fixedly connected with the second-stage sun gear through a second-stage sun gear fixing plate, a third step protruding inwards is arranged at the upper part of the inner ring of the second flange sleeve, a fourth step protruding outwards is arranged at the opposite end of a spline of the second-stage main shaft, and a fourth bearing is arranged between the upper surface of the third step and the lower surface of the fourth step. The bearing enables the sun wheel not to rotate together with the main shaft, and meanwhile, the main shaft and the sun wheel are supported by the flange sleeve.

In order to provide positioning for the rotation of the big fluted disc, the big fluted disc positioning device comprises a positioning sleeve positioning device and an induction rod positioning device, the positioning sleeve positioning device comprises three positioning sleeves uniformly arranged on the outer edge of the big fluted disc and an air cylinder fixed on the rack, an ejector rod matched with the positioning sleeves is arranged on the air cylinder, a connecting plate is fixedly connected to the edge of the big fluted disc, the connecting plate extends out of the big fluted disc, and the positioning sleeves are fixedly connected to the connecting plate; the positioning sleeve is connected with a positioning sleeve connecting plate fixed on the big fluted disc; the induction rod positioning device comprises three sets of induction adjusting rods which are uniformly arranged on the outer edge of the large fluted disc and an induction rod fixing plate which is arranged above the induction adjusting rods; the position relation between the cylinder and the induction rod fixing plate is equal to the position relation between the positioning sleeve and the induction adjusting rod. The structural design is characterized in that when the induction adjusting rod passes through the bottom of the induction rod fixing plate, the induction rod positioning device sends a signal, the positioning sleeve positioning device receives the signal, the air cylinder pushes the ejector rod, the ejector rod is clamped on the positioning sleeve passing through the air cylinder at the same time, and the large fluted disc is fixed.

In order to provide a working position for the multi-head grinding device, the size of the charging bucket is matched with that of the multi-head grinding device, the two charging buckets are placed on the opposite sides close to the opening side of the rack, a central support is arranged in the middle of each charging bucket, a hydraulic oil cylinder is arranged in each central support, I-shaped steel is arranged on the periphery of each charging bucket, and a roller set is arranged between each I-shaped steel and each charging bucket. The structure has the effects that when the large-scale grinding equipment works, the two multi-head grinding devices at the upper ends of the two charging barrels are in a working state, and the charging barrels are driven to lift through the lifting of the hydraulic oil cylinder, so that a workpiece mounted on the multi-head grinding devices is inserted into grinding materials in the charging barrels to be ground. And the multi-head grinding device close to the opening side of the frame is in a loading and unloading state of the workpiece, and the operation is circulated.

The multi-head polishing equipment designed by the invention realizes the characteristic of driving multi-head synchronous processing and polishing by the common cooperation of the two-stage planet wheels under the driving of the primary main shaft, each connecting device can correspond to one or even a plurality of workpieces, the polishing working efficiency is greatly improved, compared with the traditional polishing mode, the multi-head polishing equipment has good stability and high transmission efficiency, and the design of the circulating work of three multi-head grinding devices also increases the working efficiency and has stable safety performance.

Drawings

FIG. 1 is a schematic view of example 1;

FIG. 2 is a schematic view of the upper portion of the large head of FIG. 1;

FIG. 3 is a schematic view of the positioning apparatus of embodiment 1;

FIG. 4 is a schematic view of a multi-head polishing apparatus in example 1;

FIG. 5 is an overall sectional view of the multi-head polishing apparatus;

FIG. 6 is a schematic view of the primary linkage arrangement of FIG. 4;

FIG. 7 is a schematic illustration of the two-stage linkage of FIG. 4;

FIG. 8 is a cross-sectional view of the flange bushing assembly in the linkage;

FIG. 9 is a schematic view showing the bottom structure of the bucket in example 1;

fig. 10 is a schematic view of the upper structure of the bucket in embodiment 1.

1-frame, 2-multi-head grinding device, 3-big fluted disc, 3 a-upper fixed plate, 3 b-lower fixed plate,

4-charging basket, 5-autorotation bevel gear speed reducing motor, 6-revolution bevel gear speed reducing motor, 7-revolution gear, 11-first-stage main shaft, 12-second-stage main shaft, 13-transmission shaft, 14-first-stage sun gear,

15-first-stage planet gear, 16-second-stage sun gear, 17-second-stage sun gear, 18-polishing equipment connecting device, 22-first-stage sun gear fixing plate, 23-second-stage sun gear fixing plate, 24-first flange, 25-second flange, 26-first-stage turntable, 27-second-stage turntable, 20-first bearing, 22-first flange sleeve, 33-first step, 34-second step, 35-second bearing, 40-third bearing, 42-second flange sleeve, 43-third step, 44-fourth step, 45-fourth bearing, 50-large gear disc positioning device,

51-positioning sleeve positioning device, 52-induction rod positioning device, 53-positioning sleeve, 54-cylinder, 55-ejector rod, 56-induction rod, 57-induction rod fixing plate, 58-hydraulic oil cylinder, 59-central support column,

60-I-steel and 61-roller set

Detailed Description

To further illustrate the technical means and effects of the present invention adopted to achieve the predetermined objects, the following detailed description of the embodiments, structures, features and effects according to the present invention will be made with reference to the accompanying drawings and preferred embodiments.

Example 1:

as shown in fig. 1-3, the large-scale grinding apparatus described in this embodiment includes a frame 1, a multi-head grinding device 2, a large gear plate 3 and material barrels 4, wherein two material barrels 4 are disposed at a lower layer inside the frame 1, three multi-head grinding devices 2 in an annular array are disposed at an upper layer inside the frame 1, the multi-head grinding device 2 is a multi-stage transmission planetary gear mechanism, a working end of the multi-head grinding device is downward, the other end opposite to the working end is a main shaft, the main shaft extends upward to the outside of the frame 1, a flat key on the main shaft is connected with a speed reduction motor 5 with an autorotation bevel gear, the three speed reduction motors 5 with autorotation bevel gears are disposed concentrically at 120 degrees, the working end of the multi-head grinding device is outward, a large gear plate 3 is disposed between the speed reduction motor 5 with the upper surface of the frame 1, the large gear plate 3 is annular, fixing plates are fixedly connected to upper and lower sides thereof, and an upper fixing plate 3a is disposed on, the lower side is provided with a lower fixed plate 3b, the main shaft of the multi-head grinding device 2 simultaneously penetrates through the upper fixed plate 3a and the lower fixed plate 3b and is connected with a reduction motor 5 of a self-rotating bevel gear, the upper surface of the frame 1 is provided with a round hole corresponding to the big fluted disc 3, and the diameter of the round hole exceeds the diameter formed by the main shafts of the three multi-head grinding devices 2 and is smaller than the diameter of the big fluted disc 3; the upper fixing plate 3a is connected with a revolution bevel gear speed reducing motor 6, the revolution bevel gear speed reducing motor 6 is connected with a revolution gear 7, and the revolution gear 7 is in meshing transmission with the large fluted disc 3; the upper fixing plate 3a is provided with a large fluted disc positioning device 50.

As shown in fig. 5, the multi-head grinding device 2 includes a primary spindle 11, a linkage device 8, a secondary spindle 12, a transmission shaft 13 and a connection device 18, the primary spindle 11 is connected with a primary linkage device 9, the primary linkage device 9 is provided with a plurality of primary planet gears 15, a primary sun gear 14 is arranged in the middle of the plurality of primary planet gears 15, and the primary sun gear 14 and the primary planet gears 15 are in mesh transmission; the upper end of the secondary main shaft 12 is matched with the primary planetary gear 15 through a key, one end of the secondary main shaft 12, which is opposite to the primary planetary gear 15, is connected with a secondary linkage device 10, a plurality of secondary planetary gears 17 are arranged on the secondary linkage device 10, a secondary sun gear 16 is arranged in the middle of the plurality of secondary planetary gears 17, and the secondary sun gear 16 and the secondary planetary gears 17 are in mutual meshing transmission; the upper end of the transmission shaft 13 is matched with the secondary planetary gear 17 through a key, and one end of the transmission shaft 13 opposite to the secondary planetary gear 17 is connected with a connecting device 18;

as shown in fig. 6, the primary linkage 9 includes a first flange 24 and a first turntable 26, the end of the primary spindle 11 is fixedly connected with the first flange 24 through a spline, the outer side of the first flange 24 is welded with the first turntable 26, the first flange 24 and the first turntable 26 are coaxial with the primary spindle 11 and rotate along with the rotation of the primary spindle 11, and the primary planetary gear 15 is arranged on the upper part of the first turntable 26; the secondary linkage device 10 comprises a second flange 25 and a second-stage turntable 27, the end, opposite to the first-stage planetary gear 15, of the second-stage main shaft 12 is fixedly connected with the second flange 25 through a spline, the outer side of the second flange 25 is connected with the second-stage turntable 27 in a welding mode, the second flange 25 and the second-stage turntable 27 are coaxial with the second-stage main shaft 11 and rotate along with the rotation of the second-stage main shaft 12, and the second-stage planetary gear 17 is arranged on the upper portion of the second-stage turntable 27;

as shown in fig. 7 and 8, a first flange sleeve 32 is sleeved on the middle section of the outer ring of the primary main shaft 11 in a matching manner through a first bearing 30, the first flange sleeve 32 is fixedly connected with the primary sun gear 14 through a primary sun gear fixing plate 22, a first inwardly protruding step 33 is arranged on the upper portion of the inner ring of the first flange sleeve 32, a second outwardly protruding step 34 is arranged at the opposite end of the spline of the primary main shaft 11, and a second bearing 35 is arranged between the upper surface of the first step 33 and the lower surface of the second step 34; the outer ring of the secondary main shaft 12 is sleeved with a second flange sleeve 42 in a matching manner through a third bearing 40, the second flange sleeve 42 is fixedly connected with the secondary sun gear 16 through a secondary sun gear fixing plate 23, the upper part of the inner ring of the second flange sleeve 42 is provided with a third step 43 protruding inwards, the opposite end of the spline of the secondary main shaft 12 is provided with a fourth step 44 protruding outwards, and a fourth bearing 45 is arranged between the upper surface of the third step 43 and the lower surface of the fourth step 44.

As shown in fig. 3, the large fluted disc positioning device 50 comprises a positioning sleeve positioning device 51 and an induction rod positioning device 52, the positioning sleeve positioning device 51 comprises three positioning sleeves 53 uniformly arranged on the outer edge of the large fluted disc 3 and an air cylinder 54 fixed on the frame 1, the air cylinder 54 is provided with an ejector rod 55 matched with the positioning sleeves 53, the edge of the large fluted disc 3 is fixedly connected with a connecting plate 58, the connecting plate 58 extends out of the large fluted disc 3, and the positioning sleeves are fixedly connected on the connecting plate 58; the positioning sleeve 53 is connected with a positioning sleeve connecting plate 58 fixed on the big fluted disc 3; the induction rod positioning device 52 comprises three sets of induction adjusting rods 56 uniformly arranged on the outer edge of the large fluted disc 3 and an induction rod fixing plate 57 arranged above; the positional relationship between the cylinder 54 and the sensing rod fixing plate 57 should be identical to the positional relationship between the positioning sleeve 53 and the sensing adjustment rod 56.

As shown in fig. 9 and 10, the size of the charging basket 4 is adapted to the multi-head grinding device 2, the two charging baskets 4 are placed on the opposite sides close to the opening side of the frame 1, a central pillar 59 is arranged in the middle of the charging basket 4, a hydraulic oil cylinder 58 is arranged in the central pillar 59, i-shaped steel 60 is arranged around the charging basket, and a roller train 61 is arranged between the i-shaped steel 60 and the charging basket.

Although the present invention has been described with reference to the preferred embodiments, it should be understood that various changes, substitutions and alterations can be made herein without departing from the spirit and scope of the invention as defined by the appended claims.