CN115091330A

CN115091330A - Bilateral fixed grinding device

Info

Publication number: CN115091330A
Application number: CN202210817433.0A
Authority: CN
Inventors: 潘彩虹
Original assignee: Guangdong Stone Chain Technology Development Co ltd
Current assignee: Guangdong Stone Chain Technology Development Co ltd
Priority date: 2022-07-12
Filing date: 2022-07-12
Publication date: 2022-09-23

Abstract

The invention relates to the technical field of building material production equipment, and discloses a bilateral fixed polishing device which comprises a bottom plate, wherein two stand columns are fixedly connected to the top surface of the bottom plate, a top plate is arranged at the top ends of the stand columns, a clamping mechanism is arranged at the center of the top surface of the bottom plate, a polishing mechanism is arranged on the bottom surface of the top plate, and the polishing mechanism comprises a fixing plate, a sliding cavity II, a sliding block II, a spring, a connecting rod, a mounting plate and a case. According to the invention, by arranging the polishing mechanism and the two polishing wheels, two sides of a material can be polished simultaneously, the polishing efficiency is high, the polishing wheels can be conveniently detached by arranging the mounting block, the polishing wheels with different specifications can be conveniently replaced to adapt to materials to be polished with different volumes, the polishing surface is smoother, and the problems that most of the existing polishing equipment is a handheld polishing device, only single-side polishing can be carried out, and the plane of single-side polishing is uneven are solved.

Description

Bilateral fixed grinding device

Technical Field

The invention relates to the technical field of building material production equipment, in particular to a bilateral fixed polishing device.

Background

In the current building industry, people strive for perfection and more humanization on the basis of building construction far from building for building a house, so that the society has promoted the rapid development of building decorative materials; for polishing building materials, when an original plate is polished, the original plate is polished manually, the polishing quality is low, the polishing efficiency is low, and the development of the polishing industry is severely restricted, so that a plurality of polishers are researched and developed in society due to the phenomenon; however, the existing polishing equipment still has some defects, most of the existing polishing equipment are handheld polishing devices, only single-side polishing can be carried out, and a polished plane of the single side is not smooth.

Disclosure of Invention

The invention aims to provide a bilateral fixed grinding device to achieve the aim of solving the problems.

In order to achieve the purpose, the invention provides the following technical scheme: a bilateral fixed polishing device comprises a bottom plate, wherein two upright posts are fixedly connected to the top surface of the bottom plate, a top plate is arranged at the top ends of the upright posts, a clamping mechanism is arranged at the center of the top surface of the bottom plate, a polishing mechanism is arranged on the bottom surface of the top plate, the polishing mechanism comprises a fixing plate, a sliding cavity II, a sliding block II, a spring, a connecting rod, a mounting plate, a case, a motor I, a rotating rod I, a mounting block and a polishing wheel, the fixing plate is fixedly connected to the bottom surface of the top plate, the sliding cavity II is arranged in the fixing plate, the sliding block II is slidably connected in the sliding cavity II, one end of the spring is fixedly connected with one side of the sliding block II, the other end of the spring is fixedly connected with one side of the sliding cavity II, the connecting rod is fixedly connected to the bottom surface of the sliding block II, the connecting rod is slidably connected to a sliding hole which is formed in the bottom surface of the top plate and is communicated with the sliding cavity II, the mounting plate is fixedly connected to one end, far away from the second sliding block, of the connecting rod, the case is fixedly mounted on the top surface of the mounting plate, the first motor is fixedly mounted on the inner wall of the case, one end of the first rotating rod is fixedly connected with the output end of the first motor through the coupler, the first rotating rod penetrates through one side of the case and is rotatably connected with the case, and the grinding wheel is arranged at one end, far away from the first motor, of the first rotating rod.

Preferably, four supporting legs of bottom surface four corners fixedly connected with of bottom plate through setting up the supporting leg, can hoisting device's stability, avoid the device to produce vibrations in the course of the work of polishing and lead to rocking, influence life.

Preferably, the clamping mechanism comprises a polishing table, a first sliding cavity, a rotating shaft, rotating discs, a rotating handle, a rubber sleeve, a first sliding block, a sliding rod, a clamping plate and a rubber pad, the polishing table is fixedly connected at the center of the top surface of the bottom plate, the first sliding cavity is arranged in the polishing table, the rotating shaft transversely penetrates through the polishing table, the rotating shaft is rotatably connected with the two sides of the polishing table through two bearings, the two rotating discs are respectively and fixedly connected with the two ends of the rotating shaft, the rotating handle is fixedly connected on the circumference of one side of the rotating disc away from the rotating shaft, the first sliding block is slidably connected in the first sliding cavity, the sliding rod is fixedly connected on the top surface of the first sliding block, the sliding rod is slidably connected in a sliding hole which is formed in the top surface of the polishing table and is communicated with the first sliding cavity, the other end of the sliding rod is fixedly connected with the clamping plate, and the rotating shaft is rotated by the arrangement of the clamping mechanism, thereby drive two slider one and close the motion, drive two clamp plate looks proximal motion, will treat two non-polishing face pressure fastening of polishing material and fix, avoid polishing the in-process and treat that polishing material takes place the skew, influence the effect of polishing.

Preferably, the fixed cover of rubber sleeve is established on the turning handle, through setting up the rubber sleeve, promotes the travelling comfort when using the turning handle to the protection hand is not worn by the turning handle.

Preferably, the pivot is located one section of sliding chamber one and is gone up the symmetry and be provided with positive and negative screw thread, the quantity of slider one, slide bar, clamping plate is two, two a respective thread bush of slider is established on the positive and negative screw thread section of pivot, through setting up positive and negative screw thread, rotates the pivot and can drive two sliders one and carry out the slip close or that is close mutually, drives two clamping plates and carries out close or the motion of leaving mutually to will wait that the material of polishing presss from both sides tightly or the pine takes off, realizes clamping function.

Preferably, the number of the rubber pads is two, the two rubber pads are respectively and fixedly connected to two surfaces which are close to the two clamping plates, and the rubber pads are arranged, so that the friction force between the rubber pads and the surface of the material to be polished can be utilized, and the stability of the material to be polished can be improved.

Preferably, the one end fixedly connected with installation piece that motor one was kept away from to bull stick one, polish wheel fixed mounting through setting up the installation piece on one side that the bull stick one was kept away from to the installation piece, conveniently install the wheel of polishing on the bull stick one, can change the wheel of polishing of different specifications according to the volume of waiting to polish the material, hoisting device's practicality.

Preferably, a lifting mechanism is arranged in the stand column, the lifting mechanism comprises a sliding plate, a supporting rod, a second motor, a second rotating rod, a first gear, a threaded rod and a second gear, the sliding plate is connected to the inner wall of the stand column in a sliding manner, the supporting rod is fixedly connected to the top surface of the sliding plate, the supporting rod penetrates through the top surface of the stand column and is connected with the stand column in a sliding manner, one end of the supporting rod, far away from the sliding plate, is fixedly connected with the bottom surface of the top plate, the second motor is fixedly installed at the center of the bottom surface of the stand column, one end of the second rotating rod is fixedly connected with the output end of the second motor through a coupler, the other end of the second rotating rod is fixedly connected with the bottom surface of the first gear, two ends of the threaded rod are respectively connected with the top surface and the bottom surface of the inner wall of the stand column through two bearings in a rotating manner, the threaded rod penetrates through the sliding plate and is in threaded connection with the sliding plate, the second gear is fixedly sleeved on the threaded rod, just gear two and the meshing of gear one, through setting up elevating system, utilize two drive bull sticks of motor to rotate, drive the threaded rod through gear one and the transmission of gear two and rotate to make slide and bracing piece go up and down, realize the lift of roof, drive grinding machanism and go up and down, conveniently rise grinding machanism when getting the blowing, avoid grinding machanism to influence to get and put the material operation.

The invention provides a bilateral fixed polishing device. The method has the following beneficial effects:

(1) according to the invention, by arranging the polishing mechanism and arranging the two polishing wheels, two sides of a material can be polished simultaneously, the polishing efficiency is high, the polishing wheels can be conveniently detached by arranging the mounting block, the polishing wheels with different specifications can be conveniently replaced, so that the polishing wheels can be adapted to materials to be polished with different sizes, the polished surface is smoother, and the problems that most of the existing polishing equipment is a handheld polishing device, only single-side polishing can be carried out, and the plane polished by the single side is uneven are solved.

(2) According to the invention, the clamping mechanism is arranged, and the rotating handle is rotated to rotate the rotating shaft, so that the two sliding blocks are driven to move close to each other, the two clamping plates are driven to move close to each other, two non-polishing surfaces of a material to be polished are pressed and fixed, and the polishing effect is prevented from being influenced by the deviation of the material to be polished in the polishing process.

(3) According to the lifting device, the lifting mechanism is arranged, the rotating rod is driven to rotate by the motor II, the threaded rod is driven to rotate through the transmission of the gear I and the gear II, so that the sliding plate and the supporting rod are lifted, the top plate is lifted, the polishing mechanism is driven to lift, the polishing mechanism is conveniently lifted when materials are taken and placed, and the polishing mechanism is prevented from influencing the material taking and placing operation.

(4) According to the invention, the rubber pad is arranged, and the stability of the material to be polished can be increased by the friction force between the rubber pad and the surface of the material to be polished by utilizing the high friction coefficient of the rubber pad.

Drawings

FIG. 1 is a front view of the present invention;

FIG. 2 is a cross-sectional view of the present invention;

FIG. 3 is an enlarged cross-sectional view of the clamping mechanism of the present invention;

FIG. 4 is an enlarged cross-sectional view of the grinding mechanism of the present invention;

FIG. 5 is an enlarged cross-sectional view of the lift mechanism of the present invention;

FIG. 6 is an enlarged view of the structure A of the present invention.

In the figure: 1. a base plate; 2. supporting legs; 3. a column; 4. a top plate; 5. a clamping mechanism; 501. a polishing table; 502. a sliding cavity I; 503. a rotating shaft; 504. a turntable; 505. a handle is rotated; 506. a rubber sleeve; 507. a first sliding block; 508. a slide bar; 509. a clamping plate; 5010. a rubber pad; 6. a polishing mechanism; 601. a fixing plate; 602. a sliding cavity II; 603. a second sliding block; 604. a spring; 605. a connecting rod; 606. mounting a plate; 607. a chassis; 608. a first motor; 609. a first rotating rod; 6010. mounting blocks; 6011. grinding the wheel; 7. a lifting mechanism; 701. a slide plate; 702. a support bar; 703. a second motor; 704. a second rotating rod; 705. a first gear; 706. a threaded rod; 707. and a second gear.

Detailed Description

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

Examples of which are illustrated in the accompanying drawings, wherein like reference numerals refer to the same or similar elements or elements having the same or similar function throughout. The embodiments described below with reference to the drawings are illustrative and intended to be illustrative of the invention and are not to be construed as limiting the invention.

In the description of the present invention, it is to be understood that the terms "central," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," "circumferential," and the like are used in the orientations and positional relationships indicated in the drawings for convenience in describing the invention and to simplify the description, and are not intended to indicate or imply that the referenced device or element must have a particular orientation, be constructed and operated in a particular orientation, and are not to be considered limiting of the invention.

In the present invention, unless otherwise expressly stated or limited, the terms "mounted," "connected," "secured," and the like are to be construed broadly and can, for example, be fixedly connected, detachably connected, or integrally formed; can be mechanically or electrically connected; they may be directly connected or indirectly connected through intervening media, or may be connected through the use of two elements or the interaction of two elements. The specific meanings of the above terms in the present invention can be understood by those skilled in the art according to specific situations.

As shown in fig. 1 to 6, the present invention provides the technical solutions: a bilateral fixed polishing device comprises a bottom plate 1, four supporting legs 2 are fixedly connected to four corners of the bottom surface of the bottom plate 1, the stability of the device can be improved by arranging the supporting legs 2, the phenomenon that the device shakes during polishing operation to affect the service life is avoided, two upright posts 3 are fixedly connected to the top surface of the bottom plate 1, a top plate 4 is arranged at the top ends of the upright posts 3, a clamping mechanism 5 is arranged at the center of the top surface of the bottom plate 1, the clamping mechanism 5 comprises a polishing table 501, a sliding cavity I502, a rotating shaft 503, a turntable 504, a rotating handle 505, a rubber sleeve 506, a sliding block I507, a sliding rod 508, a clamping plate 509 and a rubber pad 5010, the polishing table 501 is fixedly connected to the center of the top surface of the bottom plate 1, the sliding cavity I502 is arranged in the polishing table 501, the rotating shaft 503 transversely penetrates through the polishing table 501, and the rotating shaft 503 is rotatably connected with two sides of the polishing table 501 through two bearings, the two turntables 504 are respectively and fixedly connected to two ends of a rotating shaft 503, a rotating handle 505 is fixedly connected to the circumference of one side of the turntables 504 far away from the rotating shaft 503, a rubber sleeve 506 is fixedly sleeved on the rotating handle 505, the comfort when the rotating handle 505 is used is improved by arranging the rubber sleeve 506, hands are protected from being abraded by the rotating handle 505, a first sliding block 507 is slidably connected in a first sliding cavity 502, a sliding rod 508 is fixedly connected on the top surface of the first sliding block 507, the sliding rod 508 is slidably connected in a sliding hole which is formed in the top surface of the polishing platform 501 and is communicated with the first sliding cavity 502, the other end of the sliding rod 508 is fixedly connected with a clamping plate 509, a section of the rotating shaft 503 in the first sliding cavity 502 is symmetrically provided with positive and negative threads, the number of the first sliding blocks 507, the sliding rod 508 and the clamping plate 509 is two, the first sliding blocks 507 are respectively sleeved on the positive and negative thread sections of the rotating shaft 503, and the rotating shaft 503 can drive the first sliding blocks 507 to slide close to or separate from each other, the two clamping plates 509 are driven to move close to or away from each other, so that a material to be polished is clamped or loosened, a clamping function is realized, the number of the rubber pads 5010 is two, the two rubber pads 5010 are respectively and fixedly connected to two close surfaces of the two clamping plates 509, the high friction coefficient of the rubber pads 5010 is utilized, the stability of the material to be polished can be increased through the friction force between the rubber pads 5010 and the surface of the material to be polished, the bottom surface of the top plate 4 is provided with the polishing mechanism 6, the polishing mechanism 6 comprises a fixing plate 601, a sliding cavity II 602, a sliding block II 603, a spring 604, a connecting rod 605, a mounting plate 606, a case 607, a motor I608, a rotating rod I609, a mounting block 6010 and a polishing wheel 6011, the fixing plate 601 is fixedly connected to the bottom surface of the top plate 4, the sliding cavity II 602 is arranged in the fixing plate 601, the sliding block II 603 is slidably connected in the sliding cavity II 602, one end of the spring 604 is fixedly connected to one side of the sliding block II 603, the other end of the spring 604 is fixedly connected with one side of the second sliding cavity 602, the connecting rod 605 is fixedly connected with the bottom surface of the second sliding block 603, the connecting rod 605 is slidably connected in a sliding hole which is formed in the bottom surface of the top plate 4 and is communicated with the second sliding cavity 602, the mounting plate 606 is fixedly connected with one end, far away from the second sliding block 603, of the connecting rod 605, the case 607 is fixedly installed on the top surface of the mounting plate 606, the first motor 608 is fixedly installed on the inner wall of the case 607, one end of the first rotating rod 609 is fixedly connected with the output end of the first motor 608 through a coupler, the first rotating rod 609 penetrates through one side of the case 607, the first rotating rod 609 is rotatably connected with the case 607, the polishing wheel 6011 is arranged at one end, far away from the first motor 608, the mounting block 6010 is fixedly connected with one end, far away from the first motor 608, the polishing wheel 1 is fixedly installed on one side, far away from the first rotating rod 609, through the mounting block 6010, the grinding wheel 6011 is conveniently mounted on the first rotating rod 609, grinding wheels 6011 of different specifications can be replaced according to the volume of a material to be ground, the lifting device is practical, a lifting mechanism 7 is arranged in the upright post 3, the lifting mechanism 7 comprises a sliding plate 701, a supporting rod 702, a second motor 703, a second rotating rod 704, a first gear 705, a threaded rod 706 and a second gear 707, the sliding plate 701 is slidably connected to the inner wall of the upright post 3, the supporting rod 702 is fixedly connected to the top surface of the sliding plate 701, the supporting rod 702 penetrates through the top surface of the upright post 3 and is slidably connected with the upright post 3, one end of the supporting rod 702, far away from the sliding plate 701, is fixedly connected with the bottom surface of the top plate 4, the second motor 703 is fixedly mounted at the center of the bottom surface of the upright post 3, one end of the second rotating rod 704 is fixedly connected with the output end of the second motor 703 through a coupler, the other end of the second rotating rod 704 is fixedly connected with the bottom surface of the first gear 705, two ends of the threaded rod 706 are rotatably connected with the top surface and the bottom surface of the inner wall of the upright post 3 through two bearings respectively, threaded rod 706 runs through slide 701, and threaded rod 706 and slide 701 threaded connection, the fixed cover of two 707 gears is established on threaded rod 706, and two 707 gears mesh with one 705 gear, through setting up elevating system 7, utilize two 703 motors to drive two 704 rotations of bull stick, drive threaded rod 706 through the transmission of one 705 gear and two 707 gears and rotate, thereby make slide 701 and bracing piece 702 go up and down, realize the lift of roof 4, it goes up and down to drive polishing mechanism 6, conveniently rise polishing mechanism 6 when getting the blowing, avoid polishing mechanism 6 to influence to get and put the material operation.

When the material polishing device is used, a material to be polished is placed on the polishing platform 501, the rotating handle 505 is shaken, the rotating handle 505 drives the rotating disc 504 to rotate, the rotating disc 504 rotates to drive the rotating shaft 503 to rotate, the rotating shaft 503 rotates to drive the two first sliding blocks 507 to mutually approach, the two first sliding blocks 507 move close to each other to drive the two clamping plates 509 to move close to each other, and the material to be polished is clamped and fixed at the center of the top surface of the polishing platform 501; starting a second motor 703, driving a second rotating rod 704 to rotate by the second motor 703, driving a first gear 705 to rotate by the rotation of the first gear 705, driving two second gears 707 to synchronously rotate, driving two threaded rods 706 to synchronously rotate by the synchronous rotation of the two second gears 707, driving the sliding plate 701 and the supporting rod 702 to descend by the synchronous rotation of the two threaded rods 706, driving the top plate 4 and the polishing mechanism 6 to descend, pulling the connecting rods 605 towards two sides in the descending process of the polishing mechanism 6, closing the second motor 703 when the polishing wheel 6011 descends to a part to be polished, fixing the positions of the top plate 4 and the polishing mechanism 6, loosening the two connecting rods 605, pushing the second sliding block 603 to reset by the elastic force generated by the deformation of the spring 604, driving the connecting rods 605 and the structure connected with the bottom ends of the second sliding block 603 to reset, enabling the two polishing wheels 6011 to be tightly attached to the polishing surface of the material to be polished, starting the first motor 608, the first motor 608 drives the first rotating rod 609 to rotate, the first rotating rod 609 rotates to drive the polishing wheel 6011 to rotate, a material to be polished is polished, the top plate 4 and the polishing mechanism 6 are jacked up through the lifting mechanism 7 after polishing is completed, the rotating handle 505 rotates in the reverse direction to enable the two clamping plates 509 to move away from each other, the polished material is loosened, and the material is taken down.

It should be noted that, in this document, relational terms such as first and second, and the like are used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising a reference structure" does not exclude the presence of other identical elements in a process, method, article, or apparatus that comprises the element.

Claims

1. The utility model provides a bilateral fixed grinding device, includes bottom plate (1), its characterized in that: the top surface of the bottom plate (1) is fixedly connected with two upright posts (3), the top ends of the upright posts (3) are provided with top plates (4), the center of the top surface of the bottom plate (1) is provided with a clamping mechanism (5), the bottom surface of each top plate (4) is provided with a polishing mechanism (6), each polishing mechanism (6) comprises a fixing plate (601), a sliding cavity II (602), a sliding block II (603), a spring (604), a connecting rod (605), a mounting plate (606), a case (607), a motor I (608), a rotating rod I (609), a mounting block (6010) and a polishing wheel (6011), the fixing plate (601) is fixedly connected to the bottom surface of each top plate (4), the sliding cavity II (602) is arranged in the fixing plate (601), the sliding block II (603) is slidably connected to the sliding cavity II (602), one end of the spring (604) is fixedly connected to one side of the sliding block II (603), the other end of the spring (604) is fixedly connected with one side of the second sliding cavity (602), the connecting rod (605) is fixedly connected on the bottom surface of the second sliding block (603), the connecting rod (605) is connected in a sliding hole which is arranged on the bottom surface of the top plate (4) and is communicated with the sliding cavity II (602), the mounting plate (606) is fixedly connected to one end of the connecting rod (605) far away from the second sliding block (603), the case (607) is fixedly arranged on the top surface of the mounting plate (606), the motor I (608) is fixedly arranged on the inner wall of the case (607), one end of the first rotating rod (609) is fixedly connected with the output end of the first motor (608) through a coupler, the first rotating rod (609) penetrates through one side of the case (607), and the rotating rod I (609) is rotatably connected with the machine box (607), and the grinding wheel (6011) is arranged at one end of the rotating rod I (609) far away from the motor I (608).

2. A double sided stationary sharpening unit according to claim 1, wherein: four supporting legs (2) are fixedly connected to four corners of the bottom surface of the bottom plate (1).

3. A double sided stationary sharpening unit according to claim 1, wherein: the clamping mechanism (5) comprises a polishing platform (501), a first sliding cavity (502), a rotating shaft (503), rotating discs (504), rotating handles (505), a rubber sleeve (506), a first sliding block (507), sliding rods (508), a clamping plate (509) and rubber pads (5010), wherein the polishing platform (501) is fixedly connected to the center of the top surface of the base plate (1), the first sliding cavity (502) is arranged in the polishing platform (501), the rotating shaft (503) transversely penetrates through the polishing platform (501), the rotating shaft (503) is rotatably connected with the two sides of the polishing platform (501) through two bearings, the two rotating discs (504) are fixedly connected to the two ends of the rotating shaft (503) respectively, the rotating handles (505) are fixedly connected to the circumference of one side, far away from the rotating shaft (503), of the first sliding blocks (507) are slidably connected in the first sliding cavity (502), the sliding rods (508) are fixedly connected to the top surface of the first sliding blocks (507), the sliding rod (508) is connected in a sliding hole which is formed in the top surface of the grinding table (501) and communicated with the sliding cavity I (502), and the other end of the sliding rod (508) is fixedly connected with the clamping plate (509).

4. A double sided stationary sharpening unit according to claim 3, wherein: the rubber sleeve (506) is fixedly sleeved on the rotating handle (505).

5. A bilateral fixed sharpening device as claimed in claim 3, wherein: a section of the rotating shaft (503) located in the first sliding cavity (502) is symmetrically provided with positive and negative threads, the number of the first sliding blocks (507), the number of the sliding rods (508) and the number of the clamping plates (509) are two, and the first sliding blocks (507) are respectively sleeved on the positive and negative thread sections of the rotating shaft (503) in a threaded manner.

6. A bilaterally fixed sharpening unit according to claim 4, wherein: the number of the rubber pads (5010) is two, and the two rubber pads (5010) are fixedly connected to two adjacent surfaces of the two clamping plates (509) respectively.

7. A double sided stationary sharpening unit according to claim 1, wherein: and a mounting block (6010) is fixedly connected to one end, away from the first motor (608), of the first rotating rod (609), and the polishing wheel (6011) is fixedly mounted on one side, away from the first rotating rod (609), of the mounting block (6010).

8. A double sided stationary sharpening unit according to claim 1, wherein: the lifting mechanism (7) is arranged in the upright post (3), the lifting mechanism (7) comprises a sliding plate (701), a supporting rod (702), a second motor (703), a second rotating rod (704), a first gear (705), a threaded rod (706) and a second gear (707), the sliding plate (701) is slidably connected to the inner wall of the upright post (3), the supporting rod (702) is fixedly connected to the top surface of the sliding plate (701), the supporting rod (702) penetrates through the top surface of the upright post (3), the supporting rod (702) is slidably connected with the upright post (3), one end, far away from the sliding plate (701), of the supporting rod (702) is fixedly connected with the bottom surface of the top plate (4), the second motor (703) is fixedly installed at the center of the bottom surface of the upright post (3), one end of the second rotating rod (704) is fixedly connected with the output end of the second motor (703) through a coupler, and the other end of the second rotating rod (704) is fixedly connected with the bottom surface of the first gear (705), the two ends of the threaded rod (706) are respectively connected with the top surface and the bottom surface of the inner wall of the upright post (3) through two bearings in a rotating mode, the threaded rod (706) penetrates through the sliding plate (701), the threaded rod (706) is in threaded connection with the sliding plate (701), the second gear (707) is fixedly sleeved on the threaded rod (706), and the second gear (707) is meshed with the first gear (705).