CN216573623U

CN216573623U - High-efficiency full-automatic centrifugal machine

Info

Publication number: CN216573623U
Application number: CN202123115137.6U
Authority: CN
Inventors: 谈闻军
Original assignee: Jiaxing Wenjun Intelligent Technology Co ltd
Current assignee: Jiaxing Wenjun Intelligent Technology Co ltd
Priority date: 2021-12-10
Filing date: 2021-12-10
Publication date: 2022-05-24
Anticipated expiration: 2031-12-10

Abstract

The utility model provides a high-efficiency full-automatic centrifugal machine, and belongs to the field of centrifugal machines. It has solved current filter screen and has been difficult to dismantle abluent problem. This high-efficient full-automatic centrifuge, ascending casing on the opening, the base of setting in the casing lower part, the base lower part has still linked firmly servo motor, the casing bottom still has the roating seat, still be connected with the rotatory inner shell that is the tube-shape on the roating seat, servo motor's output shaft is worn to establish inside the casing, still be connected with the filter screen on the rotatory inner shell, the filter screen can be dismantled and connect on rotatory inner shell, the upper end of casing still has the top cap, the middle part of top cap still has the fixing base, servo motor's output shaft one end is connected on the roating seat, and the other end is connected on the fixing base, rotatory inner shell is fixed between fixing base and the roating seat, the filter screen is fixed between fixing base and rotatory inner shell. The structure is convenient for the filter screen to be detached and replaced, and the working efficiency is improved.

Description

High-efficiency full-automatic centrifugal machine

Technical Field

The utility model belongs to the technical field of centrifuges, and relates to a high-efficiency full-automatic centrifuge.

Background

Centrifuges are machines that separate components of a liquid from solid particles or a mixture of liquids and liquids by centrifugal force, and are used primarily to separate solid particles from a liquid in a suspension, or to separate two different densities in an emulsion, or to separate two immiscible liquids. Current centrifuge structure is fixed, and it is inconvenient to dismantle or the ejection of compact, and filter screen lug connection is in centrifuge's inside, advances the use back many times, gathers solid particle or the higher liquid of density easily on the filter screen to lead to the separation effect poor, work efficiency is low, can't carry out long-term operation in succession, can't satisfy current operating mode.

Disclosure of Invention

The utility model aims to solve the problems in the prior art, and provides a high-efficiency full-automatic centrifuge which is compact in structure and high in stability.

The purpose of the utility model can be realized by the following technical scheme:

a high-efficiency full-automatic centrifuge, which comprises a shell with an upward opening, a base arranged at the lower part of the shell, it is characterized in that the lower part of the base is fixedly connected with a servo motor, the surface of the shell is also connected with a PLC controller, the PLC controller is connected with the servo motor, the bottom of the shell is also provided with a rotating seat, the rotating seat is also connected with a cylindrical rotating inner shell, the output shaft of the servo motor is arranged in the shell in a penetrating way, the inside of the rotary inner shell is also connected with a filter screen, the filter screen is detachably connected to the rotary inner shell, the upper end of the shell is also provided with a top cover, the middle part of the top cover is also provided with a fixed seat, one end of the output end of the servo motor is connected with the rotary seat, the other end is connected with the fixed seat, the rotary inner shell is fixed between the fixed seat and the rotary seat, and the filter screen is fixed between the fixed seat and the rotary inner shell.

The lower part of the base is connected with a servo motor, the PLC is connected on the surface of the side part of the shell, the PLC is communicated with the servo motor, the rotating seat is positioned at the lower part in the shell, the top of the shell is also connected with a top cover, the middle part of the top cover is provided with a circular fixed seat, the edge of the circular fixed seat is also provided with a baffle edge, the lower part of the rotating inner shell is connected on the rotating seat, the filter screen is arranged in the rotating inner shell, the upper part of the filter screen is arranged in the mounting groove of the fixed seat, the output shaft of the servo motor penetrates through the shell and is connected with the rotating seat, the top of the output shaft is connected with the middle part of the fixed seat, the top cover is buckled and connected with the top of the shell, the top of the rotating inner shell is buckled and connected with the upper part of the shell through the top cover, the top of the rotating inner shell is all clamped and embedded on the fixed seat, the output shaft of the servo motor penetrates through the rotating seat and is fixed with the rotating seat, and the tip of output shaft supports and leans on the fixing base, through the servo motor of PLC controller control base lower part, make servo motor's output shaft rotatory, the output shaft links together with the roating seat, thereby make output shaft and roating seat synchronous rotation, rotatory inner shell is driven and is rotated together, thereby the inside separator that treats of rotatory inner shell carries out centrifugal separation, the connection can be dismantled in rotatory inner shell department to the filter screen, can open through with the top cap, just can dismantle the change with the filter screen, the ejection of compact of being convenient for simultaneously, gather solid particle or behind the higher liquid of density on the filter screen, can change or wash the inside filter screen of rotatory inner shell, thereby improve the separation effect, the work efficiency is improved, current operating mode is satisfied, the service life of filter screen is prolonged.

In the above high-efficiency full-automatic centrifuge, the edge of the inner rotary shell is further provided with a detachable connection structure, the detachable connection structure comprises a cylindrical bone dragon, the edge of the bone dragon is further provided with a connecting rod, the connecting rod is welded on the inner rotary shell, reinforcing ribs are further arranged between two ends of the bone dragon, the number of the reinforcing ribs is provided with a plurality of reinforcing ribs, the plurality of reinforcing ribs are uniformly distributed and arranged along the circumferential direction of the bone dragon, the bone dragon is further provided with a connecting block protruding outwards, the connecting block is provided with locking holes, two ends of the filter screen are both provided with annular metal hoops, the filter screen is wrapped at the edges of the two metal hoops, the metal hoops are further provided with locking rods matched with the locking holes, the locking rods are hook-shaped, the upper ends of the locking rods are further provided with first bolt holes, and the connecting block is further provided with second bolt holes matched with the first bolt holes, the metal hoop and the bone dragon are connected together through bolts.

The bone dragon is also arranged in the rotary inner shell, the bone dragon is cylindrical, reinforcing ribs are also arranged at the edge of the bone dragon, the reinforcing ribs are uniformly distributed along the circumference of the bone dragon, the strength of the bone dragon can be greatly improved, meanwhile, connecting rods are also arranged at two ends of the bone dragon, the connecting rods are connected on the inner wall of the rotary inner shell through welding, the connection is more stable and firm, connecting blocks protruding outwards are also arranged at two ends of the bone dragon, locking holes are also formed in the connecting blocks, annular metal hoops are arranged at two ends of the filter screen, the filter screen is annularly wrapped on two metal fixing side parts, hook-shaped locking rods are also arranged on the metal hoops, the locking rods are matched with the locking holes, meanwhile, the locking rods at two ends of the filter screen are arranged in parallel, the filter screen is sleeved in the rotary inner shell, and the metal hoops at the upper end and the lower end are jointed with two ends of the bone dragon at the same time, the locking pole of ferrule both ends department all wears to establish and fixes downthehole at the locking of bone dragon both ends department, and bolt hole two on the locking pole is aligned with bolt hole one on the connecting block simultaneously to through wearing to establish the bolt, further connect the filter screen in the inside of fixing at rotatory inner shell, make the filter screen can be more stable, more firm fixing on rotatory inner shell, great increase connection stability and connection compactness.

In foretell full-automatic high-efficient centrifuge, the border department that the fixing base is circular and fixing base still has outside convex fender edge, the inboard on fender edge still has the rolling groove, the ball is walked in still installing in the rolling groove, the lower surface of fixing base still has the mounting groove that is annular confession filter screen installation.

The department along the fender of the upper portion connection on the fixing base of rotatory inner shell, the inboard on fender edge still is equipped with the roll groove, it walks the pearl to install a plurality of on the roll groove, the top of rotatory inner shell inlays in the roll groove and the top of rotatory inner shell supports on walking the pearl by the roll inslot, rotatory inner shell supports and leans on in the roll inslot, the roll groove has played spacing effect, walk the pearl when rotatory inner shell is rotatory and can roll along the roll groove, reduce the frictional force of rotatory inner shell, make the rotation that rotatory inner shell can be better, and make the inside pending liquid of rotatory inner shell better by the separation, separation efficiency more, the lower surface of fixing base still has the mounting groove, and the ferrule of filter screen upper end inlays in the mounting groove, can play the effect of location to the filter screen, when rotatory inner shell, make the filter screen can not take place the skew.

In foretell full-automatic centrifuge of a high efficiency, set up the spliced pole that is the hammer shape on the roating seat, the bottom of rotatory inner shell have with spliced pole assorted connection taper hole, rotatory inner shell is connected on the roating seat, and the spliced pole all inlays in connecting the taper hole, the quantity of spliced pole has a plurality of roots, and a plurality of spliced poles set up along roating seat circumference annular, the quantity of connecting the taper hole and the quantity one-to-one of spliced pole.

The spliced pole is circumference annular setting on the roating seat, the bottom of rotatory inner shell seted up with spliced pole assorted connection taper hole, rotatory inner shell inlay card is on the roating seat, a plurality of spliced poles and the setting of being connected the taper hole can be great increase the stability of being connected between rotatory inner shell and the roating seat.

In the above-mentioned high-efficient full-automatic centrifuge, the middle part of roating seat still sets up the pivot hole that supplies servo motor's output shaft to penetrate, the both sides bottom of roating seat still sets up and is the circular shape ball groove, the ball inslot still installs the ball, the ball is extruded between roating seat and base.

The output shaft of servo motor wears to establish and fixes in the commentaries on classics of roating seat middle part and takes out the hole, PLC controller control servo motor through housing face, it is rotatory to make the output shaft, the output shaft can drive whole roating seat rotatory, the both sides bottom of roating seat still has the ball groove, the ball is installed in the ball groove, the ball is located between ball groove and the base, when the roating seat is rotatory, the ball rolls, frictional force between reduction roating seat and the base that can be great, make the roating seat can more stable rotation.

In the above efficient full-automatic centrifuge, the top of the rotating inner shell further has a contact part with a semicircular cross section, and the top of the contact part is in contact with the balls in the rolling groove.

When the top cap lock is connected on the casing, the top of contact site and the interior pearl of walking of rolling groove just in time lean on the contact mutually, and when rotatory inner shell was rotatory, the contact site reduced with walk the area of contact of pearl for rotatory inner shell can be better rotatory along the rolling groove, and the friction is little, and transmission efficiency is high.

In the above mentioned high-efficiency fully automatic centrifuge, the top cover has a handle on its upper surface.

The handle on the surface of the top cover can open or close the top cover more conveniently and quickly.

In the above-mentioned high-efficient full-automatic centrifuge, still be equipped with the sealing washer between top cap and the rotatory inner shell.

The sealing washer has good corrosion resistance, and the wearability is strong, can make the more firm lock connection of top cap on rotatory inner shell and casing, increases the leakproofness.

In the above high-efficiency full-automatic centrifuge, the middle part of the fixing seat is also provided with a rolling bearing, and the top of the output shaft of the servo motor is embedded in the middle part of the rolling bearing.

The middle part of fixing base still has antifriction bearing, and servo motor's output shaft top embedding is in antifriction bearing's middle part, and the top of output shaft is spacing in antifriction bearing department, and the output shaft when rotatory, can drive antifriction bearing's inner circle rotatory, and antifriction bearing's outer lane is fixed at the middle part of fixing base, and rotation efficiency is high, and slew velocity is fast.

Compared with the prior art, the high-efficiency full-automatic centrifuge enables the filter screen to be arranged at the bone dragon position on the rotary inner shell by arranging the bone dragon in the rotary inner shell and arranging the detachable connecting structure on the bone dragon, the locking rods are arranged at the upper end and the lower end of the filter screen respectively, the locking rods at the two ends of the metal hoop are arranged in parallel, the filter screen is sleeved in the rotary inner shell, the metal hoops at the upper end and the lower end are attached to the two ends of the bone dragon, the locking rods at the two ends of the metal hoops are fixedly arranged in the locking holes at the two ends of the bone dragon in a penetrating way, the bolt holes are aligned with the bolt holes I, the filter screen is fixed on the bone dragon by penetrating bolts, the output shaft is connected with the rotary seat, the output shaft and the rotary seat synchronously rotate, the rotary inner shell is driven to rotate together, and centrifugal separation is carried out on liquid to be separated in the rotary inner shell, the connection can be dismantled in rotatory inner shell department to the filter screen, can be through opening the top cap, just can dismantle the filter screen and change, the change can enough be dismantled with the filter screen to such structure, the ejection of compact of being convenient for simultaneously, gather behind solid particle or the higher liquid of density on the filter screen, can change or wash the inside filter screen of rotatory inner shell, thereby improve the separation effect, increase work efficiency, satisfy current operating mode, increase the life of filter screen, can satisfy production and operation requirement, great increase the life of filter screen, be difficult to on the filter screen and gather a large amount of solid particle or the higher liquid of density.

Drawings

Fig. 1 is a schematic structural diagram of the high-efficiency full-automatic centrifuge.

Fig. 2 is a schematic view of the structure of the rotary seat and the rotary inner shell in the high-efficiency full-automatic centrifuge.

Fig. 3 is a schematic structural diagram of the top cover in the high-efficiency full-automatic centrifuge.

Fig. 4 is a schematic structural diagram of the filter cartridge in the high-efficiency full-automatic centrifuge.

In the figure, 1, a base; 2. a housing; 3. a servo motor; 3a, an output shaft; 4. a PLC controller; 5. a rotating base; 5a, connecting columns; 6. a top cover; 7. a fixed seat; 7a, a blocking edge; 7b, rolling grooves; 7c, rolling the beads; 7d, mounting grooves; 8. a filter screen; 8a, a ferrule; 8b, a locking rod; 9. bone dragon; 9a, reinforcing ribs; 9b, a connecting rod; 9c, connecting blocks; 9d, locking holes; 10. rotating the inner shell; 10a, connecting taper holes; 11. a rotating shaft hole; 12. a ball groove; 13. a ball bearing; 14. a handle; 15. a rolling bearing; 16. a contact portion.

Detailed Description

As shown in fig. 1, fig. 2, fig. 3 and fig. 4, the high-efficiency full-automatic centrifuge comprises a casing 2 with an upward opening, and a base 1 arranged at the lower part of the casing 2, wherein a servo motor 3 is fixedly connected to the lower part of the base 1, a PLC controller 4 is further connected to the surface of the casing 2, the PLC controller 4 is connected to the servo motor 3, a rotary base 5 is further arranged at the bottom of the casing 2, a cylindrical rotary inner shell 10 is further connected to the rotary base 5, an output shaft 3a of the servo motor 3 is arranged in the casing 2 in a penetrating manner, a filter screen 8 is further connected to the rotary inner shell 10, the filter screen 8 is detachably connected to the rotary inner shell 10, a top cover 6 is further arranged at the upper end of the casing 2, a fixing seat 7 is further arranged at the middle part of the top cover 6, one end of an output shaft of the servo motor 3 is connected to the rotary base 5, and the other end of the servo motor is connected to the fixing seat 7, the rotary inner shell 10 is fixed between the fixed seat 7 and the rotary seat 5, and the filter screen 8 is fixed between the fixed seat 7 and the rotary inner shell 10.

The edge of the rotary inner shell 10 is also provided with a detachable connection structure, the detachable connection comprises a cylindrical bone dragon 9, the edge of the bone dragon 9 is also provided with a connection rod 9b, the connection rod 9b is welded on the rotary inner shell 10, reinforcing ribs 9a are also arranged between two ends of the bone dragon 9, the number of the reinforcing ribs 9a is provided with a plurality of reinforcing ribs 9a which are uniformly distributed along the circumferential direction of the bone dragon 9, the bone dragon 9 is also provided with a connection block 9c protruding outwards, the connection block 9c is provided with locking holes 9d, two ends of the filter screen 8 are respectively provided with an annular metal hoop 8a, the filter screen 8 is wrapped at the edges of the two metal hoops 8a, the metal hoop 8a is also provided with a locking rod 8b matched with the locking holes 9d, the locking rod 8b is in a hook shape, the upper end of the locking rod 8b is also provided with a bolt hole I, and the connecting block 9c is also provided with a bolt hole II matched with the bolt hole I, and the metal hoop 8a and the bone dragon 9 are connected together through bolts.

Fixing base 7 is circular and the border department of fixing base 7 still has outside convex fender edge 7a, keep off and still have rolling groove 7b along 7 a's inboard, still install in the rolling groove 7b and walk pearl 7c, the lower surface of fixing base 7 still has and is the annular mounting groove 7d that supplies the installation of filter screen 8.

Offer the spliced pole 5a that is hammer-shaped on the roating seat 5, the bottom of rotatory inner shell 10 have with spliced pole 5a assorted connection taper hole 10a, rotatory inner shell 10 is connected on roating seat 5, and spliced pole 5a all inlays in connecting taper hole 10a, the quantity of spliced pole 5a has a plurality of roots, and a plurality of spliced poles 5a set up along 5 circumference annulars of roating seat, the quantity of connecting taper hole 10a and the quantity one-to-one of spliced pole 5 a.

The middle part of roating seat 5 still sets up the pivot hole 11 that supplies the output shaft 3a of servo motor 3 to penetrate, the both sides bottom of roating seat 5 still sets up and is circular shape ball groove 12, still install ball 13 in the ball groove 2, ball 13 is extruded between roating seat 5 and base 1.

The top of the rotating inner casing 10 is also provided with a contact part 16 with a semicircular section, and the top of the contact part 16 is contacted with the ball 7c in the rolling groove 7 b.

The top cover 6 also has a handle 14 on its upper surface.

And a sealing ring is also arranged between the top cover 6 and the rotary inner shell 10.

The middle part of the fixed seat 7 is also provided with a rolling bearing 15, and the top of the output shaft 3a of the servo motor 3 is embedded in the middle part of the rolling bearing 15.

The sub-unit connection of base 1 has servo motor 3, PLC controller 4 is connected on 2 lateral parts of casing on the surface, PLC controller 4 is linked together with servo motor 3, roating seat 5 is located casing 2 inner part lower part, filter screen 8 sets up inside rotatory inner shell 10, the connecting rod 9b of bone dragon 9 lateral part is through welded connection on the inner wall of rotatory inner shell 10, 8 covers of filter screen are established in the inside of rotatory inner shell 10, the ferrule 8a of upper and lower both ends is connected with the both ends laminating of bone dragon 9 mutually simultaneously, the closure pole 8b of ferrule 8a both ends department all wears to establish and fixes in the locking hole 9d of bone dragon 9 both ends department, bolt hole two on the closure pole 8b is aligned with the bolt hole one on the connecting block 9c simultaneously, and through wearing to establish the bolt fastening, filter screen 8 can be more stable firm fix on rotatory inner shell 10, rotatory inner shell 10 inlay card is on roating seat 5, the rotatory inner shell 10 of the setting of a plurality of spliced pole 5a and connecting taper hole 10a can be great increase rotatory inner shell 10 with the setting of roating seat 5 The connection stability between the two parts, the output shaft 3a of the servo motor 3 is arranged and fixed in the rotary drawing hole 11 at the middle part of the rotary seat 5 in a penetrating way, the ball 13 at the bottom of the rotary seat 5 is arranged between the ball groove 12 and the base 1, the top part of the shell 2 is also connected with the top cover 6, when the top cover 6 is buckled and connected on the shell 2, the contact part 16 of the rotary inner shell 10 is embedded in the rolling groove 7b, the top part of the contact part 16 of the rotary inner shell 10 is just abutted and contacted with the ball 7c in the rolling groove 7b, the top part of the metal hoop 8a at the end part of the filter screen 8 is also abutted and positioned at the mounting groove 7d, the output shaft 3a of the servo motor 3 is arranged in the shell 2 and the rotary inner shell 10 in a penetrating way, the output shaft 3a passes through and is connected with the rotary seat 5, the top part of the output shaft 3a is connected with the middle part of the rolling bearing 15 of the fixed seat 7, the servo motor 3 at the lower part of the base 1 is controlled by the PLC controller 4, the output shaft 3a of the servo motor 3 is rotated, the output shaft 3a is connected with the rotary seat 5, the output shaft 3a and the rotary seat 5 synchronously rotate by driven action, the rotary inner shell 10 also rotates together, the rolling bearing 15 at the top has a limiting effect, so that the output shaft 3a can stably rotate, when the rotary seat 5 rotates, the balls 13 roll, the friction force between the rotary seat 5 and the base 1 can be greatly reduced, meanwhile, the contact part 16 at the top of the rotary inner shell 10 abuts against the rolling balls 7d in the rolling grooves 7b, the rolling grooves 7b have a limiting effect, the rolling balls 7d can roll along the rolling grooves 7b when the rotary inner shell 10 rotates, the friction force of the rotary inner shell 10 is reduced, and therefore, the to-be-separated liquid in the rotary inner shell 10 is centrifugally separated, the rotary inner shell 10 can better rotate, and the to-be-treated liquid in the rotary inner shell 10 is better separated, more separation efficiency, filter screen 8 can be dismantled and connect in rotatory inner shell 10 department, can be through opening top cap 6, the ejection of compact of being convenient for simultaneously of convenient to detach, behind the solid particle of collection or the higher liquid of density on the filter screen 8, can change or wash the inside filter screen 8 of rotatory inner shell 10 to improve the separation effect, increase work efficiency, satisfy current operating mode, increase filter screen 8's life.

Claims

1. A high-efficiency full-automatic centrifuge, which comprises a shell with an upward opening, a base arranged at the lower part of the shell, the lower part of the base is fixedly connected with a servo motor, the surface of the shell is also connected with a PLC controller, the PLC controller is connected with the servo motor, the bottom of the shell is also provided with a rotating seat, the rotating seat is also connected with a cylindrical rotating inner shell, the output shaft of the servo motor is arranged in the shell in a penetrating way, the rotary inner shell is also connected with a filter screen, the filter screen is detachably connected to the rotary inner shell, the upper end of the shell is also provided with a top cover, the middle part of the top cover is also provided with a fixed seat, one end of an output shaft of the servo motor is connected to the rotating seat, the other end of the output shaft is connected to the fixed seat, the rotary inner shell is fixed between the fixed seat and the rotary seat, and the filter screen is fixed between the fixed seat and the rotary inner shell.

2. The high-efficiency full-automatic centrifuge as claimed in claim 1, wherein the edge of the inner rotating shell is further provided with a detachable connection structure, the detachable connection comprises a cylindrical bone dragon, the edge of the bone dragon is further provided with a connection rod, the connection rod is welded on the inner rotating shell, a plurality of reinforcing ribs are further arranged between two ends of the bone dragon, the number of the reinforcing ribs is provided with a plurality of reinforcing ribs, the plurality of reinforcing ribs are uniformly distributed along the circumferential direction of the bone dragon, the bone dragon is further provided with a connection block protruding outwards, the connection block is provided with a locking hole, two ends of the filter screen are respectively provided with an annular metal hoop, the filter screen is wrapped at the edges of the two metal hoops, the metal hoop is further provided with a locking rod matched with the locking hole, the locking rod is hook-shaped, the upper end of the locking rod is further provided with a first bolt hole, and the connection block is further provided with a second bolt hole matched with the first bolt hole, the metal hoop and the bone dragon are connected together through bolts.

3. The high-efficiency full-automatic centrifuge as claimed in claim 2, wherein the fixing base is circular, the edge of the fixing base is further provided with a blocking edge protruding outwards, the inner side of the blocking edge is further provided with a rolling groove, a ball is further mounted in the rolling groove, and the lower surface of the fixing base is further provided with an annular mounting groove for mounting the filter screen.

4. The high-efficiency full-automatic centrifuge according to claim 3, wherein the rotary base is provided with connecting columns in a hammer shape, the bottom of the inner rotary shell is provided with connecting taper holes matched with the connecting columns, the inner rotary shell is connected to the rotary base, the connecting columns are embedded in the connecting taper holes, the number of the connecting columns is provided with a plurality of connecting columns, the connecting columns are annularly arranged along the circumferential direction of the rotary base, and the number of the connecting taper holes corresponds to the number of the connecting columns one to one.

5. The high-efficiency full-automatic centrifuge according to claim 4, wherein a rotating shaft hole for an output shaft of the servo motor to penetrate is further formed in the middle of the rotating base, circular ball grooves are further formed in bottoms of two sides of the rotating base, balls are further mounted in the ball grooves, and the balls are squeezed between the rotating base and the base.

6. The high efficiency fully automatic centrifuge of claim 5, wherein the top of the rotating inner shell further has a contact part with a semicircular cross section, and the top of the contact part is in contact with the beads in the rolling groove.

7. The high efficiency, fully automatic centrifuge of claim 6, wherein the top cover further comprises a handle on an upper surface thereof.

8. The high efficiency, fully automatic centrifuge of claim 7, wherein a seal ring is further disposed between said top cover and said rotating inner shell.

9. The high-efficiency full-automatic centrifuge as claimed in claim 8, wherein the middle part of the fixing seat is further provided with a rolling bearing, and the top of the output shaft of the servo motor is embedded in the middle part of the rolling bearing.