CN111083985B

CN111083985B - Screening mechanism of potato excavator

Info

Publication number: CN111083985B
Application number: CN202010041065.6A
Authority: CN
Inventors: 杨荣
Original assignee: Individual
Current assignee: Pingyi Economic Development Zone Investment Development Co ltd
Priority date: 2020-01-15
Filing date: 2020-01-15
Publication date: 2021-11-09
Anticipated expiration: 2040-01-15
Also published as: CN111083985A

Abstract

The invention discloses a screening mechanism of a potato excavator, which comprises a bottom frame, a spring, a support piece, a fixed frame, a support block, a connecting piece, a fixed rod and an auxiliary screening device, wherein the auxiliary screening device is arranged at the left end of the top of the fixed frame, two groups of operation mechanisms are arranged inside the fixed frame, so that the screening is assisted during screening work, soil with high internal adhesiveness is effectively removed, the adsorption of the soil on potatoes is reduced, soil blocked by the fixed rod can be effectively removed, the screening work efficiency is higher, the problems that soil is wet in some areas and easily adheres to the left end of the fixed rod when the screening mechanism is operated for a long time, the soil is gradually blocked, the screening effect is reduced, and the soil on the surface of the potatoes is inconvenient to remove due to the adhesion of the soil are solved, the soil on the screened surface of the screen is still a problem.

Description

Screening mechanism of potato excavator

Technical Field

The invention relates to the field of potato picking, in particular to a screening mechanism of a potato excavator.

Background

Potatoes belong to annual herbaceous plants of solanaceae, tubers are edible and are the fourth most important grain crops in the world, the tubers are only next to wheat, rice and corn, when the potatoes are harvested, a special potato excavator is needed to excavate the potatoes, so that the potatoes in the soil are excavated, then a special screening mechanism is needed to be installed at the rear end of the potato excavator for manual uniform harvesting, the screening mechanism can screen out soil on the potatoes, and then the discharged potatoes are placed on the soil, so that workers can harvest conveniently.

Because some areas earth is comparatively moist, when screening mechanism carries out long-time operation, earth glues easily and glues at the dead lever left end, leads to its jam gradually, causes the reduction of screening effect to because the adnexed of earth leads to, potato surface soil gets rid of comparatively inconveniently, makes its screening rear surface still have the problem of earth.

Disclosure of Invention

Therefore, in order to solve the above-mentioned disadvantages, the present invention provides a screening mechanism of a potato excavator.

The invention is realized in such a way, the screening mechanism of a potato excavator is constructed, the device comprises a bottom frame, the front end and the rear end of the left end of the top of the bottom frame are vertically welded with a spring, the top of the spring is fixed with a supporting piece, the inner side of the supporting piece is welded and fixed with a fixed frame, the front end and the rear end of the right end of the top of the bottom frame are fixed with supporting blocks, the tops of the supporting blocks and a connecting piece are integrally cast and formed, the inner side of the connecting piece is fixed with the right end of the fixed frame, fourteen groups of fixing rods are obliquely distributed from the left upper end to the right lower end in the inner side of the fixed frame, the left end of the top of the fixed frame is provided with an auxiliary screening device, the auxiliary screening device comprises a shell, bottom blocks, a transmission box, a first motor, a second motor, an anti-blocking mechanism, a rotating roller and a brush, the bottom of each bottom block is tightly embedded into four ends of the top of the fixed frame, the improved anti-blocking device is characterized in that a transmission case is installed at the right end of the back of the shell, a first motor is arranged at the left end of the back of the transmission case, the left upper end of the back of the shell is fixed with a second motor through a bolt, an anti-blocking mechanism is installed at the left upper end of the inside of the shell, the front end and the rear end of the middle part of the right end of the inside of the shell are rotatably connected with a rotating roller, and a brush is embedded in the outer diameter surface of the rotating roller.

Preferably, the transmission case comprises a case body, a driving pulley, a synchronous belt, a driven pulley and an intermittent motion mechanism, the driving pulley is arranged at the upper right end in the case body, the middle in the driving pulley is fixed with an output shaft at the front end of the first motor, the outer diameter surface of the driving pulley is synchronously rotated with the driven pulley at the lower left end through the synchronous belt, and the intermittent motion mechanism is arranged on the front end surface of the driven pulley.

Preferably, prevent that jam mechanism includes base plate, slide rail, slider, extension board, scraping board, axle bed, lead screw and ball bearing, the base plate top is fixed with casing top left end, both ends are fixed with the slide rail about the base plate bottom, the slide rail bottom meets with the slider, the slider bottom is fixed with the extension board through the bolt, the welding of extension board bottom middle part has the scraping board, the left end in scraping board bottom embedding dead lever, both ends middle part is fixed with the axle bed around the base plate bottom, the lead screw has been inserted at the middle part in the axle bed, lead screw external diameter surface rear end is fixed with the extension board through ball bearing, the lead screw back is fixed with second motor front end output shaft.

Preferably, the intermittent motion mechanism comprises a back plate, a rotating ring, a poking rod, a rotary table and a support column, the back plate is fixed to the left end in the box body, the rotating ring is arranged at the left end of the front end face of the back plate, the middle part in the rotating ring is fixed to the middle part in the driven belt pulley through a shaft lever, the poking rod is welded to the lower right end in the rotating ring, the rotary table is installed at the right end of the front end face of the back plate, the support column is fixed to the front end face of the rotary table, and the back face of the rotary table is fixed to the rotating roller.

Preferably, the lower end of the left side of the shell is provided with an opening, and the height of the opening is two thirds of the height of the shell.

Preferably, connectors are mounted on the right sides of the first motor and the second motor, and the first motor and the second motor are electrically connected with an external control line through the respective connectors.

Preferably, the bottom of the hairbrush is 10cm away from the top end of the middle part of the fixing rod, and the hairbrush is flexible.

Preferably, the four groups of sliding blocks are arranged and are in sliding connection with the sliding rail.

Preferably, the right lower end in the rotating ring is in an open shape, and the poke rod is arranged in the middle of the opening position of the right lower end in the rotating ring.

Preferably, the pillars are provided with 10 groups, and the 10 groups of pillars are uniformly distributed on the front end surface of the rotary disc in a ring shape.

Preferably, the brush is made of PP plastic

Preferably, the support is made of alloy steel.

The invention has the following advantages: the invention provides a screening mechanism of a potato digger by improvement, which has the following improvement compared with the same type of equipment:

the method has the advantages that: according to the screening mechanism of the potato excavator, the auxiliary screening device is arranged at the left end of the top of the fixing frame, and the two groups of operation mechanisms are arranged inside the auxiliary screening device, so that the screening is assisted conveniently during screening work, soil with high internal adhesiveness is effectively removed, the adsorption of the soil on potatoes is reduced, and soil blocked by the fixing rods can be effectively removed, so that the screening work efficiency is higher.

The method has the advantages that: according to the screening mechanism of the potato excavator, the rotating roller is mounted at the right end in the auxiliary screening device, the brush is embedded in the rotating roller and is flexible, when potatoes pass through the screening mechanism, soil attached to the surface of the potatoes can be swept by the rotating roller, the stability is good, and the cleaning effect is strong.

The method has the advantages that: according to the screening mechanism of the potato excavator, the intermittent motion mechanism is arranged in the transmission box on the back of the auxiliary screening device and is driven by the motor, so that the disc rotates, the intermittent motion is realized by matching with the internal poking rod, the rotating roller can rotate intermittently, and the brushing work is more stable.

The advantages are that: according to the screening mechanism of the potato excavator, the anti-blocking mechanism is arranged at the left end in the auxiliary screening device, the anti-blocking mechanism is controlled by the independent motor, the motor controls the inner screw rod to move, the supporting plate at the bottom can drive the scraping plate to scrape three fixing rods which are easy to block at the left end, soil on the surface of the fixing rods is scraped, and the blocking situation is effectively prevented.

Drawings

FIG. 1 is a schematic structural view of the present invention;

FIG. 2 is a schematic view of the back side of the housing of the present invention;

FIG. 3 is a schematic view of the internal structure of the housing of the present invention;

FIG. 4 is a schematic view of the internal structure of the transmission case of the present invention;

FIG. 5 is a schematic view of the anti-jamming mechanism of the present invention;

FIG. 6 is a schematic view of the ball bearing construction of the present invention;

fig. 7 is a schematic structural view of the intermittent motion mechanism of the present invention.

Wherein: bottom frame-1, spring-2, support piece-3, fixed frame-4, support block-5, connecting piece-6, fixed rod-7, auxiliary screening device-8, shell-81, bottom block-82, transmission case-83, first motor-84, second motor-85, anti-blocking mechanism-86, rotating roller-87, brush-88, box-831, driving pulley-832, synchronous belt-833, driven pulley-834, intermittent motion mechanism-835, base plate-861, slide rail-862, slide block-863, support plate-864, scraping plate-865, shaft seat-866, lead screw-867, ball bearing-868, back plate-8351, rotating ring-8352, poke rod-8353, rotary disc-8354, rotating rod-6, rotating rod-7, auxiliary screening device-8, shell-81, bottom block-82, transmission case-83, transmission case-835, intermittent motion mechanism-835, base plate-861, slide rail-862, slide block-863, support plate-864, scraping plate-865, shaft seat-866, lead screw-867, ball bearing-868, back plate-8351, rotating ring-8352, poke bar-8353, rotating rod-8354, rotating plate-for rotating shaft-for rotating device, and rotating device, A support post-8355.

Detailed Description

The present invention will be described in detail below with reference to fig. 1 to 7, and the technical solutions in the embodiments of the present invention will be clearly and completely described, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

Example one

Referring to fig. 1, the invention provides a screening mechanism of a potato excavator through improvement, which comprises a bottom frame 1, wherein the front end and the rear end of the left end of the top of the bottom frame 1 are vertically welded with a spring 2, the top of the spring 2 is fixed with a support member 3, the inner side of the support member 3 is welded and fixed with a fixed frame 4, the front end and the rear end of the right end of the top of the bottom frame 1 are fixedly provided with support blocks 5, the top of each support block 5 is integrally cast and formed with a connecting member 6, the inner side of the connecting member 6 is fixed with the right end of the fixed frame 4, fourteen groups of fixed rods 7 are obliquely arranged from the left upper end to the right lower end of the inner side of the fixed frame 4, and the left end of the top of the fixed frame 4 is provided with an auxiliary screening device 8.

Referring to fig. 2 and 3, the invention provides a screening mechanism of a potato excavator by improvement, an auxiliary screening device 8 comprises a housing 81, a bottom block 82, a transmission case 83, a first motor 84, a second motor 85, an anti-blocking mechanism 86, a rotating roller 87 and a brush 88, wherein the bottom block 82 is fixed at four ends of the bottom of the housing 81, the bottom end of the left side of the housing 81 is provided with an opening, the opening is two thirds of the height of the housing 81 to facilitate the entering of potatoes without blocking the potatoes, the bottom of the bottom block 82 is tightly embedded into four ends of the top of the fixed frame 4 to facilitate the stable installation of the housing 81, the transmission case 83 is installed at the right end of the back of the housing 81, the first motor 84 is arranged at the left end of the back of the transmission case 83, the left upper end of the back of the housing 81 is fixed with the second motor 85 through bolts, connectors are installed at the right sides of the first motor 84 and the second motor 85, and the first motor 84 and the second motor 85 are electrically connected with an external control line through respective connector, be convenient for insert and carry out stable control to the motor, upper left end is installed and is prevented blockking up mechanism 86 in casing 81, and both ends rotate with live-rollers 87 around the right-hand member middle part in the casing 81, and live-rollers 87 external diameter surface embedding has brush 88, and brush 88 bottom is apart from 7 middle parts tops 10cm of dead lever to brush 88 is flexible, is convenient for clean, and is effectual, and brush 88 adopts PP plastics material, and intensity is high, and the price is low.

Referring to fig. 4, the invention provides a screening mechanism of a potato excavator by improvement, a transmission case 83 includes a case 831, a driving pulley 832, a synchronous belt 833, a driven pulley 834 and an intermittent motion mechanism 835, the driving pulley 832 is arranged at the upper right end in the case 831, the middle part in the driving pulley 832 is fixed with an output shaft at the front end of a first motor 84, the outer diameter surface of the driving pulley 832 rotates synchronously with the driven pulley 834 at the lower left end through the synchronous belt 833, the intermittent motion mechanism 835 is arranged at the front end surface of the driven pulley 834, and the driven pulley 834 serves as a main power transmission pulley of the intermittent motion mechanism 835.

Referring to fig. 5 and 6, the invention provides a screening mechanism of a potato excavator by improvement, the anti-clogging mechanism 86 comprises a substrate 861, a slide rail 862, a slide block 863, a support plate 864, a scraping plate 865, a shaft seat 866, a screw rod 867 and a ball bearing 868, the top of the substrate 861 is fixed with the left end of the top of the housing 81, the slide rails 862 are fixed at the left and right ends of the bottom of the substrate 861, the bottom of the slide rail 862 is connected with the slide block 863, the slide block 863 can provide stability for the support plate 864 during sliding, the slide block 863 is provided with four groups, the four groups of slide blocks 863 are connected with the slide rail 862 in a sliding manner, the stability is provided for the slide block, the bottom of the slide block 863 is fixed with the support plate 864 by bolts, the scraping plate 865 is welded at the middle part of the bottom end of the support plate 864, the scraping plate 865 can be placed on the fixing rod 7 to effectively clean the fixing rod 7, the bottom of the scraping plate 865 is embedded into the left end of the fixing rod 7, axle seats 866 are fixed in the middle of the front end and the rear end of the bottom of the base plate 861, a screw rod 867 is inserted into the middle of the axle seats 866, the rear end of the outer diameter surface of the screw rod 867 is fixed with the support plate 864 through a ball bearing 868, and the back of the screw rod 867 is fixed with an output shaft at the front end of the second motor 85.

Referring to fig. 7, the invention provides a screening mechanism of a potato excavator by improvement, wherein the intermittent motion mechanism 835 includes a back plate 8351, a rotating ring 8352, a poking rod 8353, a rotating plate 8354 and a support column 8355, the back plate 8351 is fixed with the left end in the box 831, the rotating ring 8352 is arranged at the left end of the front end surface of the back plate 8351, the middle part in the rotating ring 8352 is fixed with the middle part in the driven pulley 834 through a shaft rod, the poking rod 8353 is welded at the right lower end in the rotating ring 8352, the right lower end in the rotating ring 8352 is open, the poking rod 8353 is arranged at the middle part of the opening position of the right lower end in the rotating ring 8352, so as to facilitate the movement of the poking rod 8353, the rotating plate 8354 is mounted at the right end of the front end surface of the back plate 8351, the support column 8355 is fixed at the front end surface of the rotating plate 8354, 10 groups of the support columns 8355 are all arranged in a ring shape, and the 10 groups of the support columns 8355 are uniformly arranged at the front end surface of the rotating plate 8354, so as to facilitate the stable rotation of the rotating plate 8354 under stress, the support 8355 is made of alloy steel, so that the stability is strong, the durability is good, and the back of the turntable 8354 is fixed with the rotating roller 87.

Example two

According to the screening mechanism of the potato excavator, the shell 81 is in a trapezoid shape, the right side of the shell 81 is an inclined plane, so that the occupied space is effectively reduced, and the cost is conveniently reduced; more than fifteen groups of brushes 88 are embedded into the rotating roller 87, the edges of the brushes 88 are in a sharp angle shape, and the brushes 88 effectively sweep soil on potatoes, so that the effect is good; a sealing cover is fixed at the bottom of the box body 831 and is fixed with the box body 831 through bolts, and the sealing cover can be opened, so that the inside of the box body 831 can be conveniently overhauled and checked; the bottom of the scraping plate 865 is provided with four groups of bar-shaped rods, the side faces of the bar-shaped rods are respectively provided with a convex block, and the inner side of the convex block is in contact with the outer side of the left end of the fixed rod 7, so that the soil on the fixed rod 7 can be stably removed.

The invention provides a screening mechanism of a potato excavator through improvement, and the working principle is as follows;

firstly, when the equipment needs to be used, the left side of the bottom frame 1 is connected with a potato excavator, and then a connecting wire of an excavator control room is connected to connecting ports of a first motor 84 and a second motor 85, so that required electric energy can be provided for the work of the potato excavator and the potato excavator is controlled;

secondly, excavating work can be started, excavated potatoes are received at the left end of the fixed frame 4, then the fixed rod 7 is rolled down, in the rolling down process, the spring 2 can vibrate under the action of the excavator, so that soil on the potatoes is shaken down, and the potatoes can be discharged from the right end of the fixed frame 4;

thirdly, when the soil adhesion is large, the first motor 84 inside the auxiliary screening device 8 is started to start working, the first motor 84 can drive the driving pulley 832 in the transmission box 83 to rotate, then the driving pulley 832 enables the driven pulley 834 to rotate through the synchronous belt 833, then the driven pulley 834 can enable the rotating ring 8352 in the intermittent movement mechanism 835 to start moving, when the rotating ring 8352 moves, the poke rod 8353 in the rotating ring 8352 can fix the support column 8355 so as to enable the rotary disc 8354 to intermittently rotate, then the rotary disc 8354 can enable the rotating roller 87 to move, the brush 88 on the rotating roller 87 can scrape the passing potatoes so that the soil adhered to the surface of the potatoes is swept down;

fourth, when the earth of excavation is comparatively moist, lead to dead lever 7 left end to block up easily, then start second motor 85 and begin to move, second motor 85 front end output shaft rotates, make prevent that lead screw 867 in the jam mechanism 86 rotates, lead screw 867 can make ball bearing 868 move after that, make the extension board 864 at top slide, the scraping plate 865 of bottom can scrape at dead lever 7 left end when extension board 864 slides, strike off the earth in the clearance between it, make it can not take place to block up.

According to the screening mechanism of the potato excavator, the auxiliary screening device 8 is arranged at the left end of the top of the fixing frame 4, and the two groups of operation mechanisms are arranged inside the auxiliary screening device, so that the screening is assisted during screening work, soil with high internal adhesiveness is effectively removed, the adsorption of the soil on potatoes is reduced, and soil blocked by the fixing rods can be effectively removed, so that the screening work efficiency is higher; the rotating roller 87 is arranged at the right end in the auxiliary screening device 8, the brush 88 is embedded in the rotating roller 87, the brush 88 is flexible, when potatoes pass through, soil attached to the surface of the potatoes can be swept down under rotation, the stability is good, and the cleaning effect is strong; an intermittent motion mechanism 835 is arranged in the transmission case 83 on the back of the auxiliary screening device 8, the intermittent motion mechanism 835 is driven by a motor to rotate a disc, and intermittent motion is realized by matching with an internal poke rod 8353, so that the rotating roller 87 can rotate intermittently, and the brushing work is more stable; through setting up anti-clogging mechanism 86 in auxiliary screening device 8 the left end, control by independent motor in anti-clogging mechanism 86, the motion of the inside lead screw 867 of motor control can make the extension board 864 of bottom drive scrape the board 865 and scrape three easy dead levers 7 that block up of left end, make its surperficial earth scraped down, the effectual condition that prevents to block up takes place.

The basic principles and main features of the present invention and the advantages of the present invention have been shown and described, and the standard parts used in the present invention are all available on the market, the special-shaped parts can be customized according to the description and the accompanying drawings, the specific connection mode of each part adopts the conventional means of bolt and rivet, welding and the like mature in the prior art, the machinery, parts and equipment adopt the conventional type in the prior art, and the circuit connection adopts the conventional connection mode in the prior art, and the details are not described herein.

The previous description of the disclosed embodiments is provided to enable any person skilled in the art to make or use the present invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other embodiments without departing from the spirit or scope of the invention. Thus, the present invention is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. The utility model provides a screening mechanism of potato excavator, includes underframe (1), both ends and spring (2) vertical welding around underframe (1) top left end, spring (2) top is fixed mutually with support piece (3), support piece (3) inboard and fixed frame (4) carry out welded fastening, both ends are fixed with a piece (5) around underframe (1) top right-hand member, a piece (5) top and connecting piece (6) integrative casting take shape, connecting piece (6) inboard and fixed frame (4) right-hand member are fixed, fourteen groups of dead lever (7) have been arranged by upper left end to lower right end slope to fixed frame (4) inboard;

the method is characterized in that: the anti-blocking device is characterized by further comprising an auxiliary screening device (8), wherein the auxiliary screening device (8) is arranged at the left end of the top of the fixed frame (4), the auxiliary screening device (8) comprises a shell (81), bottom blocks (82), a transmission box (83), a first motor (84), a second motor (85), an anti-blocking mechanism (86), a rotating roller (87) and a brush (88), the bottom blocks (82) are fixed at four ends of the bottom of the shell (81), the bottom of each bottom block (82) is tightly embedded into four ends of the top in the fixed frame (4), the transmission box (83) is installed at the right end of the back of the shell (81), the first motor (84) is arranged at the left end of the back of the transmission box (83), the left end of the back of the shell (81) is fixed with the second motor (85) through bolts, the anti-blocking mechanism (86) is installed at the upper left end of the inner left of the shell (81), and the front and rear ends of the middle part of the inner right end of the shell (81) are rotatably connected with the rotating roller (87), the outer diameter surface of the rotating roller (87) is embedded with a brush (88), the transmission case (83) comprises a case body (831), a driving pulley (832), a synchronous belt (833), a driven pulley (834) and an intermittent motion mechanism (835), the upper right end in the case body (831) is provided with the driving pulley (832), the middle in the driving pulley (832) is fixed with an output shaft at the front end of a first motor (84), the outer diameter surface of the driving pulley (832) synchronously rotates with the driven pulley (834) at the lower left end through the synchronous belt (833), the front end surface of the driven pulley (834) is provided with the intermittent motion mechanism (835), the anti-blocking mechanism (86) comprises a substrate (861), a sliding rail (862), a sliding block (863), a supporting plate (864), a scraping plate (865), an axle seat (866), a lead screw (867) and a ball bearing (868), the top of the substrate (861) is fixed with the left end at the top of the case body (81), slide rails (862) are fixed at the left end and the right end of the bottom of the base plate (861), the bottom of each slide rail (862) is connected with a slide block (863), the bottom of each slide block (863) is fixed with a support plate (864) through a bolt, a scraping plate (865) is welded in the middle of the bottom end of each support plate (864), the bottom of each scraping plate (865) is embedded into the left end of a fixed rod (7), shaft seats (866) are fixed in the middle of the front end and the rear end of the bottom of the base plate (861), a lead screw (867) is inserted into the middle of the shaft seat (866), the rear end of the outer diameter surface of the lead screw (867) is fixed with the support plate (864) through a ball bearing (868), the back of the lead screw (867) is fixed with an output shaft at the front end of a second motor (85), the intermittent motion mechanism (835) comprises a back plate (8351), a rotating ring (8352), a poking rod (8353), a turntable (8354) and a support column (8355), the back plate (8351) is fixed with the left end of a box body (831), the utility model discloses a backplate (8351) preceding terminal surface left end is provided with swivel becket (8352) to the middle part is fixed through axostylus axostyle and interior middle part of driven pulley (834) in swivel becket (8352), the welding of the interior right side lower extreme of swivel becket (8352) has poker rod (8353), carousel (8354) is installed to backplate (8351) preceding terminal surface right-hand member, carousel (8354) preceding terminal surface is fixed with pillar (8355), carousel (8354) back is fixed mutually with rotation roller (87).

2. The screening mechanism of potato excavator of claim 1, wherein: an opening is formed in the lower end of the left side of the shell (81), and the height of the opening is two thirds of the height of the shell (81).

3. The screening mechanism of potato excavator of claim 1, wherein: connectors are mounted on the right sides of the first motor (84) and the second motor (85), and the first motor (84) and the second motor (85) are electrically connected with external control lines through the connectors.

4. The screening mechanism of potato excavator of claim 1, wherein: the distance between the bottom of the brush (88) and the top end of the middle part of the fixing rod (7) is 10cm, and the brush (88) is flexible.

5. The screening mechanism of potato excavator of claim 1, wherein: the four groups of sliding blocks (863) are arranged, and the four groups of sliding blocks (863) are in sliding connection with the sliding rails (862).

6. The screening mechanism of potato excavator of claim 1, wherein: the inner right lower end of the rotating ring (8352) is in an opening shape, and the poke rod (8353) is arranged in the middle of the opening position of the inner right lower end of the rotating ring (8352).

7. The screening mechanism of potato excavator of claim 1, wherein: the supporting columns (8355) are provided with 10 groups, and the 10 groups of supporting columns (8355) are uniformly distributed on the front end surface of the rotary table (8354) in a ring shape.