CN107280028B

CN107280028B - Multistation persimmon decorticator

Info

Publication number: CN107280028B
Application number: CN201710588584.2A
Authority: CN
Inventors: 赵坚; 杨尚; 于明; 洪学武; 刘海强; 贺艺龙; 王达; 高志鹏
Original assignee: Tianjin Chengjian University
Current assignee: Tianjin Chengjian University
Priority date: 2017-07-19
Filing date: 2017-07-19
Publication date: 2023-01-24
Anticipated expiration: 2037-07-19
Also published as: CN107280028A

Abstract

The invention provides a multi-station persimmon peeling machine which comprises a rack, a rotary material conveying mechanism, a lifting and feeding mechanism and a cutting and peeling mechanism, wherein the rotary material conveying mechanism, the lifting and feeding mechanism and the cutting and peeling mechanism are all fixedly arranged on the rack, the rotary material conveying mechanism can be accurately positioned and conveys persimmons to stations corresponding to the lifting and feeding mechanism, the lifting and feeding mechanism and the rotary material conveying mechanism work in a matched mode and drive the persimmons to move up and down and rotate in the feeding process, and the cutting and peeling mechanism finishes peeling in the moving process. The device provided by the invention can realize safe, sanitary and efficient persimmon peeling work, and is worthy of vigorous popularization and application.

Description

Multistation persimmon decorticator

Technical Field

The invention belongs to the technical field of fruit peeling mechanical equipment, and particularly relates to a multi-station persimmon peeling machine.

Background

The persimmon variety planted in China is various, the output of the persimmon is fourth in the world fruit yield, and is second to the apple, the pear and the grape. Persimmon cake production is the most important processing mode of persimmons. In the persimmon cake processing process, the most labor-consuming process is the persimmon peeling process. Ordinary peasant household and small-size dried persimmon processing factory adopt the manual work to peel off traditional processing mode, need consume a large amount of time and labour, and efficiency is lower, and has the health hidden danger. Meanwhile, the manual peeling causes the conditions that the residual peel of the persimmons is too much, the pulp of the persimmons is too much removed, or the surface of the peeled persimmons is not smooth enough and the like to reduce the quality of the persimmons due to different personal methods.

Therefore, the invention provides a device suitable for peeling persimmons, which can solve the problem of low efficiency of traditional manual peeling. The device can realize the movement of rotary material conveying, vertical feeding and cutting peeling. The device can pinpoint the persimmon under intelligent system's control, and the material that transports of persimmon is accomplished steadily, high-efficiently, tasks such as shelling. The device can satisfy the persimmon peeling processing demand of family or middle and small mill, under the prerequisite of guaranteeing the health, improves the peeled machining efficiency of persimmon, promotes the quality of dried persimmon, has important meaning to the automation technology development of dried persimmon industry.

Therefore, due to the technical defects in the prior art, the technical problems to be solved by the technical staff in the field are urgent.

Disclosure of Invention

The invention aims to provide a multi-station persimmon peeling machine, and aims to solve the problems that in the prior art, persimmons are difficult to peel and the peeling efficiency is low.

The present invention is achieved in such a way that,

the utility model provides a multistation persimmon decorticator, includes frame, rotatory material conveying mechanism, lift feeding mechanism and cutting peeling mechanism are all fixed to be set up in the frame, be equipped with handle and gyro wheel in the frame, the frame bottom is equipped with the balance adjustment wheel, rotatory material conveying mechanism can pinpoint, transports the station that lift feeding mechanism corresponds with the persimmon, just lift feeding mechanism and the cooperation work of rotatory material conveying mechanism drive persimmon elevating movement and rotary motion at the pay-off in-process, in the motion process, peeling mechanism accomplishes and peels.

Preferably, rotatory fortune material mechanism includes gear motor, shaft coupling, end cover, bearing, sheave, support bowl, carousel, driver plate, motor supporting seat and synchronous axis of rotation, gear motor passes through the motor supporting seat to be fixed in the frame, connect the driver plate through the shaft coupling transmission, the driver plate drives the sheave and rotates, the sheave is again through synchronous axis of rotation transmission connection carousel, synchronous axis of rotation go up with all be equipped with the bearing on the shaft coupling, the bearing outside all is equipped with the end cover, evenly be equipped with the support bowl on the carousel, just the support bowl pass through the screw with carousel fixed connection, the support bowl lower extreme is equipped with the through-hole.

Preferably, the rotary material conveying mechanism further comprises a sheave protective housing, the sheave protective housing is located above the sheave and below the turntable, one end of the sheave protective housing is fixed on the rack, and the other end of the sheave protective housing is fixed on the outer wall of the end cover at the upper end of the synchronous rotating shaft.

Preferably, the bowl is arc bowl-shaped.

Preferably, the lifting and feeding mechanism comprises a lifting part and a clamping and rotating part.

Preferably, the lift part includes motor, plum blossom shaft coupling, small motor supporting seat, fixed beam, lead screw supporting seat, lead screw, feed rod supporting seat, support link and feed rod, the motor passes through the small motor supporting seat to fix on the fixed beam to through plum blossom shaft coupling and screw connection, lead screw supporting seat and feed rod supporting seat fixed mounting are used respectively at the both ends of lead screw and feed rod on fixed beam and support frame, the support frame is fixed in the frame upper end, support the link both wings and be screw hole and unthreaded hole, connect respectively lead screw and feed rod, just support the link one side and connect centre gripping rotating part.

Preferably, the centre gripping rotating part includes small motor, supporting seat, dwang, thorn head, rubber support, electric putter, bearing cap, adjusting washer, felt circle, hinge nail, cylinder cover, round pin and plum blossom shaft coupling, electric putter fixes in the frame, fixed cover is passed through to the pin junction in the electric putter upper end, fixed cover endotheca is equipped with the hinge nail, the rubber support is connected to the hinge nail upper end, rubber support can the free rotation, just electric putter with the central line of dwang is located same vertical line, the dwang with the small motor passes through the plum blossom shaft coupling transmission and connects, the small motor passes through the supporting seat to be fixed support the link upper end, dwang and small motor are equipped with felt circle, adjusting washer and bearing cap respectively with the support link junction, the thorn head is connected to the dwang lower extreme.

Preferably, the cutting peeling mechanism includes cutting blade, knife rest, connects carousel, direction cam disc, bearing frame, big bearing end cover, pivot, motor output shaft, gear motor supporting seat, support frame, gear motor, bearing and plum blossom shaft coupling, gear motor, motor output shaft, plum blossom shaft coupling, pivot, connection carousel, knife rest and cutting blade connect gradually, just gear motor passes through the gear motor supporting seat to be fixed on the support frame, the support frame is fixed in the frame upper end, the pivot is equipped with the bearing outward, with plum blossom shaft coupling connects one side to be fixed through bearing frame and big bearing end cover on the support frame, the pivot with one side still is equipped with the direction cam disc is connected to the knife rest, connects gappedly between carousel and the direction cam disc, the direction cam disc is also fixed on the support frame.

Preferably, the connecting structure for connecting the turntable and the knife rest comprises a spring fixing piece and a pin fixing piece, the knife rest is fixed on the connecting turntable through the spring fixing piece and the pin fixing piece, the knife rest can swing, the knife rest is further provided with a guide head, a spring and a pin, the guide head is connected with the knife rest through threads, and the spring is fixed on the knife rest through the pin.

Preferably, the guide cam disc is provided with a cam track groove, and the cutter frame rotates in a semi-circle manner along a rotation center line in the cam track groove

The invention has the beneficial effects that: the multistation persimmon decorticator that this patent provided can realize peeled mechanical automation, can satisfy the persimmon peeling processing demand of family or middle and small mill, improves peeled efficiency, also can guarantee peeled effect. Meanwhile, the processing quality of the dried persimmon can be ensured, and the method has important significance on the development of automation technology of dried persimmon industry.

Drawings

FIG. 1 is an overall assembly view of the present invention;

FIG. 2 is a diagram of the Geneva mechanism components of the present invention;

FIG. 3 is a structural view of a rotary material conveying mechanism in the invention;

FIG. 4 is a structural view of the elevating member of the present invention;

FIG. 5 is a view showing a structure of a holding rotation portion in the present invention;

fig. 6 is an exploded view of a rotating member of the rotating lever according to the present invention;

FIG. 7 is an exploded view of the power putter assembly of the present invention;

FIG. 8 is a view of the cutting and peeling mechanism of the present invention;

FIG. 9 is an exploded view of the cutter portion of the present invention;

FIG. 10 is a block diagram of a guide cam plate according to the present invention;

in the figure: the device comprises a frame 1, a speed reducing motor 2, a coupler 3, an end cover 4, a bearing 5, a grooved wheel 6, a grooved wheel protective shell 7, a supporting bowl 8, a rotary disc 9, a dial 10, a motor support 11, a motor 12, a plum blossom coupler 13, a small motor support 14, a fixed beam 15, a lead screw support 16, a lead screw 17, a feed screw 18, a feed bar support 19, a support connecting frame 20, a feed bar 21, a small motor 22, a support 23, a rotating rod 24, a bayonet 25, a rubber support 26, an electric push rod 27, a bearing end cover 28, an adjusting washer 29, a felt ring 30, a hinge pin 31, a cylindrical sleeve 31, a pin 32, a cutting blade 33, a knife rest 34, a connecting rotary disc 35, a guide cam disc 36, a bearing seat 37, a large bearing end cover 38, a rotating shaft 39, a motor output shaft 40, a speed reducing motor support 41, a spring fixing plate 42, a spring fixing plate 43, a fixing plate 46, a pin shaft 46, a synchronous guide roller handle 47, a synchronous roller 50, a balance roller 50 and a balance through hole 52.

Detailed Description

In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention is described in further detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and do not limit the invention.

The multi-station persimmon peeling machine shown in fig. 1 comprises a machine frame 1, a rotary material conveying mechanism, a lifting and feeding mechanism and a cutting and peeling mechanism, wherein the rotary material conveying mechanism, the lifting and feeding mechanism and the cutting and peeling mechanism are all fixedly arranged on the machine frame 1. The rack 1 is also provided with a handle 49 and a roller 50 which are convenient for the machine to move, and the bottom of the rack 1 is provided with a balance adjusting wheel 51 which is convenient for adjusting the horizontal state of the turntable 9. The persimmon peeling machine is characterized in that the rotary conveying mechanism can accurately position and convey persimmons to stations corresponding to the lifting and conveying mechanism, the lifting and conveying mechanism and the rotary conveying mechanism work in a matched mode to drive the persimmons to move up and down and rotate in the conveying process, and the cutting and peeling mechanism finishes peeling in the moving process.

Further, as shown in fig. 2 and 3, the rotary material conveying mechanism comprises a speed reducing motor 2, a coupler 3, an end cover 4, a bearing 5, a grooved pulley 6, a bowl 8, a rotary disc 9, a drive plate 10, a motor support seat 11 and a synchronous rotating shaft 47. Gear motor 2 passes through motor support seat 11 to be fixed in frame 1 is last, connects driver plate 10 through the transmission of shaft coupling 3, driver plate 10 drives sheave 6 and rotates, sheave 6 is again through 47 transmission connection carousel 9 of synchronous axis of rotation, ensures that each step rotates and makes the persimmon can accurately arrive correct station. And bearings 5 are arranged on the synchronous rotating shaft 47 and the coupler 3, and end covers 4 are arranged on the outer sides of the bearings 5. The rotary table 9 is uniformly provided with the supporting bowls 8, the supporting bowls 8 are fixedly connected with the rotary table 9 through screws, and the lower ends of the supporting bowls 8 are provided with through holes 52. The through hole 52 is used for enabling the electric push rod 26 to pass through smoothly, and ensuring that the persimmons can carry out clamping movement and lifting movement smoothly. In this embodiment, 6 grooves are axially formed in the

grooved pulley

6, 8 supporting bowls 8 are arranged on the turntable 9, and the number of the grooves and the number of the supporting bowls 8 can be changed according to the scale in the specific production and application processes, so that the grooved pulley and the supporting bowls are all within the protection range of the patent.

Specifically, in the implementation process, place the persimmon on the support bowl 8, gear motor 2 provides power, drives sheave 6 through shaft coupling 3 and driver plate 10 and rotates, sheave 6 drives carousel 9 through synchronous axis of rotation 47 once more and rotates, carousel 9 transports the persimmon rotation of pending to the position that lift feeding mechanism corresponds.

Furthermore, the rotary material conveying mechanism further comprises a sheave protection shell 7, the sheave protection shell 7 is located above the sheave 6 and below the turntable 9, one end of the sheave protection shell 7 is fixed on the rack 1, and the other end of the sheave protection shell is fixed on the outer wall of the end cover 4 at the upper end of the synchronous rotating shaft 47. The sheave protective housing 7 protects mechanisms such as the sheave 6 in a closed space together with the frame 1, so that on one hand, the influence on the mechanical mechanism caused by the external environment can be avoided, the mechanical mechanism breaks down, and on the other hand, the mechanical structure can be avoided from polluting the persimmon.

Furthermore, the bowl 8 is arc bowl-shaped. Consider that the persimmon is the spheroidal regular shape, the event will support bowl 8 to design into arc bowl form, can make the persimmon be located vertically as far as possible to automatic heart when guaranteeing that the persimmon is put, do benefit to subsequent centre gripping persimmon.

Furthermore, the lifting feeding mechanism comprises a lifting part and a clamping and rotating part.

Further, as shown in fig. 4, the lifting part includes a motor 12, a tulip coupling 13, a small motor support 14, a fixed beam 15, a screw support 16, a screw 17, a lever support 18, a support link 19, and a lever 20. The motor 12 is fixed on the fixed beam 15 through the small motor supporting seat 14 and is connected with the lead screw 17 through the plum blossom coupling 13, the two ends of the lead screw 17 and the feed bar 20 are respectively fixedly installed on the fixed beam 15 and the supporting frame 48 through the lead screw supporting seat 16 and the feed bar supporting seat 18, and the supporting frame 48 is fixed at the upper end of the frame 1 to form a stable supporting structure. The two wings of the supporting and connecting frame 19 are threaded holes and unthreaded holes and are respectively connected with the screw rod 17 and the feed rod 20, and one side of the supporting and connecting frame 19 is connected with a clamping and rotating part. In the implementation process, when the motor 12 rotates forward and backward, the supporting and connecting frame 19 realizes the lifting motion at a proper speed, and drives the clamping and rotating part to lift.

Further, as shown in fig. 5, 6 and 7, the clamping rotating part comprises a small motor 21, a supporting seat 22, a rotating rod 23, a bayonet 24, a rubber support 25, an electric push rod 26, a bearing end cover 27, an adjusting washer 28, a felt ring 29, a hinge pin 30, a cylindrical sleeve 31, a pin 32 and a quincunx coupling 13. The electric push rod 26 is fixed on the rack 1, the upper end of the electric push rod 26 is connected with a fixing sleeve through a pin 32, a hinge nail 30 is sleeved in the fixing sleeve, the upper end of the hinge nail 30 is connected with a rubber support 25, and the rubber support 25 can rotate freely. Electric putter 26 with the central line of dwang 23 is located same vertical line, dwang 23 with small motor 21 passes through plum blossom coupling 13 transmission and connects, small motor 21 passes through supporting seat 22 to be fixed support link 19 upper end, dwang 23 and small motor 21 are equipped with felt 29, adjusting washer 28 and bearing end cover 27 respectively with support link 19 junction, the thorn head 24 is connected to dwang 23 lower extreme.

Specifically, in the implementation process, the support connecting frame drives the rotating rod 23 to ascend and descend, in the descending process, the rubber support 25 supports the persimmons, and the thorn heads 24 are inserted into the persimmon covers to complete the clamping work; the rotating rod 23 rises, the electric push rod 26 also rises, and at the moment, the electric push rod 26 passes through the through hole 52 at the lower end of the support bowl 8 to support the persimmon. Meanwhile, the small motor 21 rotates to drive the persimmon to rotate, and the rubber support 25 also rotates to complete main rotation movement.

Further, as shown in fig. 8, 9 and 10, the cutting and peeling mechanism comprises a cutting blade 33, a tool rest 34, a connecting turntable 35, a guide cam disc 36, a bearing seat 37, a large bearing end cover 38, a rotating shaft 39, a motor output shaft 40, a speed reduction motor support seat 41, a support frame 48, a speed reduction motor 2, a bearing 5 and a quincunx coupling 13. Gear motor 2, motor output shaft 40, plum blossom shaft coupling 13, pivot 39, connect carousel 35, knife rest 34 and cutting blade 33 and connect gradually, it is concrete, connect carousel 35 central design porosely, pivot 39 with be connected carousel 35 contact one end threaded hole, pivot 39 with be connected carousel 35 through the key-type connection during the assembly to use the screw to screw up them, carousel 9 can rotate. The cutting blade 33 is detachable and can adjust the installation angle. Just gear motor 2 passes through gear motor supporting seat 22 to be fixed on support frame 48, support frame 48 is fixed in frame 1 upper end, pivot 39 is equipped with bearing 5 outward, with plum blossom shaft coupling 13 is connected one side and is fixed through bearing frame 37 and big bearing end cap 38 on the support frame 48, pivot 39 with knife rest 34 is connected one side and still is equipped with direction cam disc 36, connects gappedly between carousel 35 and the direction cam disc 36, direction cam disc 36 is also fixed on the support frame 48.

Furthermore, the connecting structure of the connecting rotary disc 35 and the knife rest 34 comprises a spring fixing plate 42 and a pin fixing plate 46, the knife rest 34 is fixed on the connecting rotary disc 35 through the spring fixing plate 42 and the pin fixing plate 46, the knife rest 34 can swing, the knife rest 34 is further provided with a guide head 45, a spring 43 and a pin 32, the guide head 45 is connected with the knife rest 34 through threads, and the spring 43 is fixed on the knife rest 34 through the pin 32.

Further, the guide cam plate 36 is provided with a cam track groove, and the tool holder 34 performs a half-circle rotation along a rotation center line in the cam track groove.

It should be noted that the device provided by this patent is modified slightly to meet the peeling requirement of other fruits, but all fall within the scope of protection of this patent.

In addition, on the premise of improving the grooved pulley 6 mechanism, a plurality of sets of lifting feeding mechanisms and cutting peeling mechanisms are arranged on the rack 1, and peeling of a plurality of persimmons can be completed simultaneously only by one set of rotating conveying mechanism.

If the invention is matched with a mechanical arm and an automatic control system, the safe, sanitary and efficient persimmon peeling work can be completed.

The working principle and the process of the embodiment are as follows:

the rotary material conveying mechanism, the lifting and feeding mechanism and the cutting and peeling mechanism of the multi-station persimmon peeling machine move coordinately. When the persimmon conveying device works, the persimmons are placed on the supporting bowl 8 and reach a clamping station through the rotary conveying mechanism, and the persimmons stay below the clamping station under the action of the structure of the grooved pulley 6; at the moment, when the motor 12 rotates forwards, the support connecting frame 19 drives the upper ejector rod component to descend, the thorn head 24 is inserted into the persimmon cover, and the electric push rod 26 supports the bottom of the persimmon; the motor 12 rotates reversely, the support connecting frame 19 drives the upper top rod component to ascend, meanwhile, the electric push rod 26 supports the persimmons to ascend synchronously, the persimmons are conveyed to a peeling station, and the motor 12 stops; the small motor 21 rotates to drive the persimmon and the rubber support 25 to synchronously rotate; under the action of the motor 12, the rotating shaft 39 drives the connecting turntable 35 to rotate, meanwhile, the cutting tool rotates along with the connecting turntable 35, the guide head 45 moves on the cam groove track of the guide cam disc 36, the cutting tool completes semi-circle rotation, and meanwhile, the inclination angle of the tool rest 34 is adjustable, so that the peeling work is completed; the motor 12 rotates forwards, the supporting connecting frame 19 descends, the electric push rod 26 synchronously descends at the same time, and the peeled persimmons return to the supporting bowl 8; the electric push rod 26 continuously descends to the bottom of the rotary table 9, the motor 12 rotates reversely, the support connecting frame 19 ascends, and the persimmons fall back into the support bowl 8; and the peeling machine enters the next peeling period of the persimmons.

Although the embodiments of the present invention have been described with reference to the accompanying drawings, it is not intended to limit the scope of the invention, and it should be understood by those skilled in the art that various modifications and variations can be made without inventive changes in the technical solutions of the present invention.

Claims

1. The utility model provides a multistation persimmon decorticator which characterized in that: the persimmon peeling machine comprises a rack, a rotary conveying mechanism, a lifting feeding mechanism and a cutting peeling mechanism, wherein the rotary conveying mechanism, the lifting feeding mechanism and the cutting peeling mechanism are all fixedly arranged on the rack, a handle and a roller are further arranged on the rack, a balance adjusting wheel is arranged at the bottom of the rack, the rotary conveying mechanism can be accurately positioned and conveys persimmons to stations corresponding to the lifting feeding mechanism, the lifting feeding mechanism and the rotary conveying mechanism work in a matched mode, the persimmons are driven to move up and down and rotate in the feeding process, and the cutting peeling mechanism finishes peeling in the moving process;

the rotary material conveying mechanism comprises a driving unit and a rotary table on the driving unit, wherein the rotary table is uniformly provided with support bowls, and the lower ends of the support bowls are provided with through holes; the driving unit comprises a speed reduction motor, a coupler, an end cover, a bearing, a grooved wheel, a driving plate, a motor supporting seat and a synchronous rotating shaft, the speed reduction motor is fixed on the rack through the motor supporting seat and is in transmission connection with the driving plate through the coupler, the driving plate drives the grooved wheel to rotate, the grooved wheel is in transmission connection with a turntable through the synchronous rotating shaft, the bearing is arranged on the synchronous rotating shaft and on the coupler, the end cover is arranged on the outer side of each bearing, and the supporting bowl is fixedly connected with the turntable through a screw;

the lifting feeding mechanism comprises a lifting part and a clamping rotating part, wherein the clamping rotating part comprises a small motor, a supporting seat, a rotating rod, a thorn head, a rubber support and an electric push rod, the rotating rod is driven by the small motor, and the lower end of the rotating rod is connected with the thorn head; the electric push rod is fixed on the rack, the upper end of the electric push rod is connected with a fixed sleeve through a pin, a hinge nail is sleeved in the fixed sleeve, the upper end of the hinge nail is connected with a rubber support, the rubber support can rotate freely, and the electric push rod and the central line of the rotating rod are positioned on the same vertical line;

the cutting and peeling mechanism comprises a cutting blade, a cutter rest, a connecting rotary disc, a guide cam disc, a bearing seat, a large bearing end cover, a rotary shaft, a motor output shaft, a speed reducing motor supporting seat, a supporting frame, a speed reducing motor, a bearing and a plum coupling, wherein the speed reducing motor, the motor output shaft, the plum coupling, the rotary shaft, the connecting rotary disc, the cutter rest and the cutting blade are sequentially connected; the knife rest is fixed on the connecting turntable through a spring fixing piece and a pin shaft fixing piece, the knife rest can swing, the knife rest is further provided with a guide head, a spring and a pin, the guide head is connected with the knife rest through threads, and the spring is fixed on the knife rest through the pin.

2. The multi-station persimmon peeling machine of claim 1, which is characterized in that: the rotary material conveying mechanism further comprises a grooved wheel protective shell, the grooved wheel protective shell is located above the grooved wheel and below the turntable, one end of the grooved wheel protective shell is fixed to the rack, and the other end of the grooved wheel protective shell is fixed to the outer wall of the end cover at the upper end of the synchronous rotating shaft.

3. The multi-station persimmon peeling machine as claimed in claim 1, characterized in that: the bowl is arc bowl-shaped.

4. The multi-station persimmon peeling machine of claim 1, which is characterized in that: the lifting part comprises a motor, a plum blossom coupling, a small motor supporting seat, a fixed beam, a screw supporting seat, a screw, a feed screw supporting seat, a supporting connecting frame and a feed screw, the motor is fixed on the fixed beam through the small motor supporting seat and is connected with the screw through the plum blossom coupling, the screw supporting seat and the feed screw supporting seat are respectively used at the two ends of the screw and the feed screw and are fixedly arranged on the fixed beam and the supporting frame, the supporting frame is fixed at the upper end of the frame, two wings of the supporting connecting frame are threaded holes and unthreaded holes and are respectively connected with the screw and the feed screw, and the clamping rotating part is connected with one side of the supporting connecting frame.

5. The multi-station persimmon peeling machine of claim 4, which is characterized in that: the dwang with the small motor passes through the plum blossom coupling transmission and connects, the small motor passes through the supporting seat to be fixed support the link upper end, dwang and small motor are equipped with felt, adjusting washer and bearing end cover respectively with supporting the link junction.

6. The multi-station persimmon peeling machine as claimed in claim 1, characterized in that: the speed reducing motor is fixed on the support frame through the speed reducing motor support seat, the support frame is fixed at the upper end of the rack, a bearing is arranged outside the rotating shaft, and one side of the rotating shaft, which is connected with the plum blossom coupling, is fixed on the support frame through a bearing seat and a large bearing end cover.