CN112224802B

CN112224802B - Garbage disposal equipment for environmental sanitation and cleaning

Info

Publication number: CN112224802B
Application number: CN202011149283.8A
Authority: CN
Inventors: 张坤海
Original assignee: Shenzhen Yuhetian Smart City Operation Group Co ltd
Current assignee: Shenzhen Yuhetian Smart City Operation Group Co ltd
Priority date: 2020-10-23
Filing date: 2020-10-23
Publication date: 2022-04-12
Anticipated expiration: 2040-10-23
Also published as: CN112224802A

Abstract

The invention discloses a garbage treatment device for environmental sanitation cleaning, which structurally comprises a rack, a motor, a transmission rod, a treatment structure, a conveying cylinder and a liquid collecting tank, wherein the motor is arranged at the upper end of the rack, the transmission rod is embedded and arranged at the inner side of the motor, the treatment structure is fixed at the upper end of the rack, the conveying cylinder is embedded and arranged at the right end of the treatment structure, the liquid collecting tank is horizontally arranged at the upper end of the rack, the treatment structure comprises a feed hopper, a separation paddle, a case and a solid-liquid separation structure, the feed hopper is obliquely arranged at the upper end of the case, the separation paddle is embedded and arranged at the inner side of the case, the left end of the separation paddle is connected with the transmission rod through a belt, and the solid-liquid separation structure is horizontally arranged at the lower end of the case; the separation net is arranged between the supports, so that kitchen garbage can be thrown out by inertia while sliding along with the inclined plane, and blockage during filtering is prevented.

Description

Garbage disposal equipment for environmental sanitation and cleaning

Technical Field

The invention belongs to the field of environmental sanitation, and particularly relates to garbage treatment equipment for environmental sanitation cleaning.

Background

People usually bury or burn rubbish in the past directly, and along with people's a continuous concern to sanitation, also begin to carry out the processing of other forms to rubbish, wherein included classifying rubbish, and the classification of rubbish has also included carrying out the separation of solid-liquid to rubbish, and then need use sanitation and sanitation garbage disposal equipment, come the liquid that has in the separation rubbish, but prior art exists following not enoughly:

the kitchen waste becomes softer as the waste goes bad, so that the kitchen waste is attached to the filter screen along with the flowing of liquid during solid-liquid separation, so that the kitchen waste stays on the filter screen, and goes deep into the inner side of the filter holes along with the impact of the liquid to form blockage, thereby influencing the further separation treatment of the kitchen waste.

The application provides a garbage disposal device for environmental sanitation cleaning, and the defects are improved.

Disclosure of Invention

Aiming at the defects in the prior art, the invention aims to provide a garbage treatment device for environmental sanitation cleaning, which solves the problems that in the prior art, kitchen garbage becomes softer along with continuous decay of the garbage, and when solid-liquid separation is carried out, the kitchen garbage adheres to a filter screen along with the flow of liquid, so that the kitchen garbage stays on the filter screen, and further goes deep into the inner sides of filter holes along with the impact of the liquid to form blockage, so that the further separation treatment of the kitchen garbage is influenced.

In order to achieve the purpose, the invention is realized by the following technical scheme: the garbage treatment equipment for environmental sanitation cleaning structurally comprises a rack, a motor, a transmission rod, a treatment structure, a conveying cylinder and a liquid collecting box, wherein the motor is installed at the upper end of the rack and fixedly connected, the transmission rod is embedded and installed at the inner side of the motor and mechanically connected, the treatment structure is fixed at the upper end of the rack and obliquely arranged, the conveying cylinder is embedded and installed at the right end of the treatment structure and communicated with the inner side of the treatment structure, and the liquid collecting box is horizontally installed at the upper end of the rack and connected with the lower end of the treatment structure through a pipeline; the processing structure comprises a feed hopper, a separation paddle, a case and a solid-liquid separation structure, wherein the feed hopper is obliquely arranged at the upper end of the case and welded mutually, the separation paddle is embedded in the inner side of the case and movably connected with a transmission rod through a belt, the solid-liquid separation structure is horizontally arranged at the lower end of the case and is communicated with the inner side of the case, and the left side of the solid-liquid separation structure is clamped with the transmission rod mutually.

The invention is further improved, the solid-liquid separation structure comprises a support, a side communication port, a material conveying paddle, a separation net and a liquid collecting hopper, the side communication port is arranged at the side end of the support and is of an integrated structure, the material conveying paddle is embedded and installed at the inner side of the support and is movably connected, the right end of the side communication port is communicated with the conveying cylinder, the material conveying paddle is embedded and connected at the inner side of the conveying cylinder, the separation net is installed at the inner side of the support and is clamped, and the liquid collecting hopper is fixed at the lower end of the inner side of the support and is positioned below the separation net.

The invention is further improved, the material conveying paddle comprises paddles, an inner shaft, a fixing plate and an extension structure, the paddles are arranged on the outer side of the inner shaft and are distributed spirally, the extension structure is uniformly distributed along the outer side of the paddles and is connected with the outer side of the paddles through the fixing plate, and the fixing plate is arranged on the outer side of the paddles and is connected with the outer side of the paddles mechanically.

The invention is further improved, the extension structure comprises an outer embedded block, an inner groove, a rotating frame and a scraper, the inner groove is arranged at the inner side of the outer embedded block and is of an integrated structure, the rotating frame is arranged at the outer side of the outer embedded block and is connected by a hinge, and the scraper is fixed at the lower end of the rotating frame and surrounds the outer side of the outer embedded block.

The invention is further improved, the scraper comprises a plate body, a movable groove, a front edge and an inner guide groove, the movable groove is distributed and recessed at the upper end of the inner side of the plate body and is of an integrated structure, the front edge is arranged at the front end of the plate body and gradually inclines downwards from inside to outside, and the inner guide groove is recessed along the front edge and is connected with the plate body.

The invention is further improved, the separation net comprises an inner embedded plate, a partition plate, a blocking structure and through holes, the inner embedded plate is installed on the outer side of the partition plate and welded with the partition plate, the blocking structure is installed on the inner side of the partition plate in an embedded mode and movably connected, and the through holes penetrate through the inner side of the partition plate and are evenly distributed corresponding to the blocking structure.

The invention is further improved, the blocking structure comprises a movable structure, a rubber plate, an outer plate and a filter tank, the outer plate is arranged on the outer side of the movable structure and welded with the movable structure, one end of the rubber plate is embedded into the inner side of the outer plate, the other end of the rubber plate is embedded into the inner side of the partition plate, the outer plate is provided with a plurality of blocks which are mutually contacted, and the filter tank is sunken into the inner side of the outer plate and gradually penetrates through the inner side of the outer plate in an outward inclined mode from top to bottom.

The invention is further improved, the movable structure comprises an outer ring, a connecting plate, a rotating groove, a rotating ball and a guide groove, the rotating groove is arranged on the inner side of the outer ring and is of an integrated structure, the rotating ball is embedded and installed on the inner side of the rotating groove and is movably connected, the connecting plate is horizontally installed at the upper end of the rotating ball and is fixedly connected, and the guide groove is annularly recessed on the inner side of the rotating ball, and a torsion spring is arranged between the guide groove and the rotating ball.

According to the technical scheme, the garbage treatment equipment for environmental sanitation and cleaning has the following beneficial effects:

the invention sets a solid-liquid separation structure at the lower end of the case, so that kitchen garbage is conveyed along with spiral rotation, the extension structure at the outer side also works along with the spiral rotation, the scraper at the lower end of the outer embedded block is contacted with the separation net, the scraper is forced to drive the rotating frame to turn over at the outer side of the outer embedded block, the inclination of the scraper is further formed, the kitchen garbage at the upper end of the separation net is scraped, the kitchen garbage moves inwards along the front edge and is positioned at the upper end of the plate body, and the structure formed by the inner guide groove enables the kitchen garbage at the upper end to gather inwards and slide downwards along the inclined surface, so that the kitchen garbage attached to the scraper is scraped, the blockage of the kitchen garbage is prevented, and the solid-liquid separation is better carried out.

According to the kitchen waste filtering device, the separating net is arranged between the supports, when kitchen waste attached to the upper end is in contact with the material conveying paddle, the outer plate drives the movable structure to move, the position of the whole kitchen waste is changed, the rotating ball moves on the inner side of the rotating groove and acts on the torsion spring on the inner side of the guide groove, deformation is generated, the outer plate is reset in time when stress is relieved, the outer plate is bounced, the kitchen waste at the upper end is thrown out, the kitchen waste can slide along with the inclined surface and can be thrown out by inertia, and blocking during filtering is prevented.

Drawings

Other features, objects and advantages of the invention will become more apparent upon reading of the detailed description of non-limiting embodiments with reference to the following drawings:

FIG. 1 is a schematic view showing a construction of a garbage disposal apparatus for environmental sanitation;

FIG. 2 is a schematic diagram of the processing structure of the present invention;

FIG. 3 is a schematic structural view of a solid-liquid separation structure according to the present invention;

FIG. 4 is a schematic side view of the feed paddle of the present invention;

FIG. 5 is a schematic side view of an epitaxial structure of the present invention;

FIG. 6 is a schematic view of the construction of the squeegee of the invention;

fig. 7 is a schematic view of the structure of the separation web of the present invention;

FIG. 8 is a schematic structural view of a barrier structure according to the present invention;

fig. 9 is a schematic structural view of the movable structure of the present invention.

In the figure: a frame-1, a motor-2, a transmission rod-3, a processing structure-4, a conveying cylinder-5, a liquid collecting box-6, a feed hopper-41, a separation paddle-42, a case-43, a solid-liquid separation structure-44, a bracket-441, a side communication port-442, a material conveying paddle-443, a separation net-444, a liquid collecting hopper-445, a paddle-43 a, an inner shaft-43 b, a fixed plate-43 c, an extension structure-43 d, an outer embedded block-d 1, an inner groove-d 2, a rotating frame-d 3, a scraper-d 4, a plate body-d 41, a movable groove-d 42, a front edge-d 43, an inner guide groove-d 44, an inner embedded plate-44 a, a partition plates-44 b, a blocking structure-44 c, a through hole-44 d, a movable structure-c 1, a movable structure-d 1, a separation net-43 c, a separation net-b, a separation net-shaped structure, Rubber sheet-c 2, outer plate-c 3, filter tank-c 4, outer ring-c 11, connecting plate-c 12, rotating tank-c 13, rotating ball-c 14 and guide groove-c 15.

Detailed Description

In order to make the technical means, the creation characteristics, the achievement purposes and the effects of the invention easy to understand, the invention is further described with the specific embodiments.

The first embodiment is as follows: referring to fig. 1-6, the embodiments of the present invention are as follows:

the structure of the device comprises a rack 1, a motor 2, a transmission rod 3, a processing structure 4, a conveying cylinder 5 and a liquid collecting box 6, wherein the motor 2 is arranged at the upper end of the rack 1 and fixedly connected, the transmission rod 3 is embedded and arranged at the inner side of the motor 2 and mechanically connected, the processing structure 4 is fixed at the upper end of the rack 1 and obliquely arranged, the conveying cylinder 5 is embedded and arranged at the right end of the processing structure 4 and communicated with the inner side, and the liquid collecting box 6 is horizontally arranged at the upper end of the rack 1 and connected with the lower end of the processing structure 4 through a pipeline; the treatment structure 4 comprises a feed hopper 41, a separation paddle 42, a case 43 and a solid-liquid separation structure 44, wherein the feed hopper 41 is obliquely arranged at the upper end of the case 43 and welded with the case, the separation paddle 42 is embedded in the inner side of the case 43 and movably connected with the case, the left end of the separation paddle 42 is connected with the transmission rod 3 through a belt, the solid-liquid separation structure 44 is horizontally arranged at the lower end of the case 43 and communicated with the inner side, and the left side of the solid-liquid separation structure 44 is clamped with the transmission rod 3.

Referring to fig. 3, the solid-liquid separation structure 44 includes a bracket 441, a side communication port 442, a material feeding paddle 443, a separation net 444, and a liquid collecting bucket 445, the side communication port 442 is provided at a side end of the bracket 441 and is an integrated structure, the material feeding paddle 443 is embedded and installed inside the bracket 441 and is movably connected, a right end of the side communication port 442 is communicated with the conveying cylinder 5 and the material feeding paddle 443 is embedded inside the conveying cylinder 5, the separation net 444 is installed inside the bracket 441 and is clamped, and the liquid collecting bucket 445 is fixed at a lower end inside the bracket 441 and is located below the separation net 444, so that the solid is discharged to the side communication port 442 while the solid-liquid separation is performed.

Referring to fig. 4, the feeding paddle 443 includes paddles 43a, an inner shaft 43b, a fixing plate 43c, and an extension structure 43d, the paddles 43a are mounted on the outer side of the inner shaft 43b and are spirally distributed, the extension structure 43d is uniformly distributed along the outer side of the paddles 43a and is connected with the outer side of the paddles 43a through the fixing plate 43c, and the fixing plate 43c is mounted on the outer side of the paddles 43a and is mechanically connected with the paddles, so that the separation net 444 at the lower end is scraped while the food is conveyed, and the adhesion of the food waste is reduced.

Referring to fig. 5, the extension structure 43d includes an outer block d1, an inner groove d2, a rotating frame d3, and a scraping plate d4, the inner groove d2 is disposed inside the outer block d1 and is an integrated structure, the rotating frame d3 is mounted outside the outer block d1 and is connected by a hinge, and the scraping plate d4 is fixed at the lower end of the rotating frame d3 and surrounds outside the outer block d1, and moves along with the rotation of the scraping plate d3 and further swings to scrape off the attached kitchen waste.

Referring to fig. 6, the scraping plate d4 includes a plate body d41, a movable groove d42, a front edge d43, and an inner guide groove d44, the movable groove d42 is recessed in the upper end of the inner side of the plate body d41 and is an integrated structure, the front edge d43 is disposed at the front end of the plate body d41 and gradually inclines downwards from the inside to the outside, the inner guide groove d44 is recessed along the front edge d43 and connected with the plate body d41 to form an inclined surface for better scraping, and the inner guide groove d44 can make kitchen waste at the upper end slide down.

Based on the above embodiment, the specific working principle is as follows:

when power is supplied and the device is started, the kitchen waste is poured into the processing structure 4, the kitchen waste moves downwards along the feed hopper 41 and enters the inner side of the case 43, the operation of the motor 2 drives the transmission rod 3 to rotate, the separation paddle 42 starts to rotate under the drive of the belt, the kitchen waste is separated and continuously falls to the inner side of the solid-liquid separation structure 44 and enters the inner side of the bracket 441, the material conveying paddle 443 works along with the rotation of the transmission rod, the kitchen waste is driven, the liquid falls downwards along the separation net 444 and enters the liquid collecting hopper 445, the liquid enters the communicated liquid collecting tank 6 along with the pipeline to be collected, the paddle 43a is driven along with the rotation of the inner shaft 43b, the kitchen waste is conveyed along with the spiral rotation, the extension structure 43d on the outer side also works along with the rotation, the scraper d4 at the lower end of the outer embedded block d1 is in contact with the separation net 444, the rotating frame d3 is driven by the force of the force to turn over at the outer side of the outer embedded block d1, so that the scraper d4 is inclined to scrape the kitchen waste at the upper end of the separating net 444, the kitchen waste moves inwards along the front edge d43 and is positioned at the upper end of the plate body d41, and the structure formed by the inner guide groove d44 is formed, so that the kitchen waste at the upper end is gathered inwards and slides downwards along the inclined surface, the kitchen waste is treated by circulating operation, and the kitchen waste moving outwards is driven by the paddle 43a to be sent out outwards along the conveying cylinder 5.

Example two: referring to fig. 3, 7-9, the embodiment of the present invention is as follows:

the solid-liquid separation structure 44 includes a bracket 441, a side communication port 442, a material conveying paddle 443, a separation net 444, and a liquid collecting bucket 445, wherein the side communication port 442 is disposed at a side end of the bracket 441 and is an integrated structure, the material conveying paddle 443 is embedded in the bracket 441 and is movably connected to the bracket, a right end of the side communication port 442 is communicated with the conveying cylinder 5, the material conveying paddle 443 is embedded in the conveying cylinder 5, the separation net 444 is mounted in the bracket 441 and is clamped to the bracket, and the liquid collecting bucket 445 is fixed at a lower end of the inner side of the bracket 441 and is located below the separation net 444.

Referring to fig. 7, the separating net 444 includes an inner panel 44a, a partition 44b, a blocking structure 44c, and through holes 44d, wherein the inner panel 44a is installed outside the partition 44b and welded to the partition 44b, the blocking structure 44c is installed inside the partition 44b in an embedded manner and movably connected to the partition, and the through holes 44d penetrate through the inside of the partition 44b and are uniformly distributed corresponding to the blocking structure 44c, so as to form a conical filter, thereby preventing the kitchen waste from being completely covered.

Referring to fig. 8, the blocking structure 44c includes a movable structure c1, a rubber plate c2, an outer plate c3, and a filtering slot c4, the outer plate c3 is installed outside the movable structure c1 and welded to each other, one end of the rubber plate c2 is embedded inside the outer plate c3, the other end is embedded inside the partition 44b, the outer plate c3 has a plurality of blocks and contacts with each other, and the filtering slot c4 is recessed inside the outer plate c3 and gradually penetrates inside the outer plate c3 from top to bottom in an inclined manner, so as to filter food waste at the upper end while being moved by force.

Referring to fig. 9, the movable structure c1 includes an outer ring c11, a connecting plate c12, a rotating groove c13, a rotating ball c14 and a guiding groove c15, the rotating groove c13 is disposed inside the outer ring c11 and is an integrated structure, the rotating ball c14 is embedded inside the rotating groove c13 and is movably connected, the connecting plate c12 is horizontally mounted at the upper end of the rotating ball c14 and is fixedly connected, the guiding groove c15 is recessed inside the rotating ball c14 in a surrounding manner, and a torsion spring is disposed between the guiding groove c15 and the torsion spring, and when a force is applied, the torsion spring is moved and acts on the torsion spring to reset the torsion spring to eject the kitchen waste.

Based on the above embodiment, the specific working principle is as follows:

after the kitchen waste falls to the upper end of the bracket 441, along with the stirring of the material conveying paddle 443, the liquid inside the kitchen waste will drop downward, and part of the kitchen waste will also drop downward and be located at the upper end of the separating net 444, at this time, the blocking structure 44c will block the kitchen waste outside and filter along the filtering groove c4, so that the liquid is sent out along the through hole 44d, and when the kitchen waste attached to the upper end contacts the material conveying paddle 443, the outer plate c3 drives the movable structure c1 to move, so that the position of the whole body is changed, the rotating ball c14 will move inside the rotating groove c13 and act on the torsion spring inside the guiding groove c15, so as to generate deformation, and when the stress is relieved, the outer plate c3 is reset in time to bounce, so as to throw the kitchen waste at the upper end, so as to carry out the circular work, so as to send out the kitchen waste.

The invention solves the problems that in the prior art, as the kitchen garbage becomes softer along with the continuous decay of the garbage, the kitchen garbage is attached to the filter screen along with the flow of liquid when being subjected to solid-liquid separation, so that the kitchen garbage stays on the filter screen, and goes deep into the inner side of the filter hole along with the impact of the liquid to form blockage and influence the further separation treatment of the kitchen garbage, through the mutual combination of the components, the invention arranges a solid-liquid separation structure at the lower end of the case, so that the kitchen garbage is conveyed along with the spiral rotation, an extension structure at the outer side works along with the kitchen garbage, a scraper at the lower end of the outer embedded block is contacted with the separation screen, and the scraper is forced to drive the rotating frame to turn over at the outer side of the outer embedded block, thereby forming the inclination of the scraper, so as to scrape the kitchen garbage at the upper end of the separation screen and move inwards along the front edge and be positioned at the upper end of the plate body, the kitchen waste at the upper end is gathered inwards and slides downwards along the inclined plane due to the structure formed by the inner guide groove, so that the kitchen waste at the upper end is scraped, the blockage of the kitchen waste is prevented, and the solid-liquid separation is better carried out; set up the separation net between the support, the kitchen garbage that adheres to the upper end will be when defeated material oar contact, the activity that the planking drove the movable structure and produced, make holistic position change, the rolling ball will move about in the rotation inslot side, and act on the inboard torsional spring of guiding groove, produce deformation with this, and when relieving the atress, timely reset, make the planking bounce, and then throw away the kitchen garbage of upper end, make it slide along with the inclined plane, can receive inertia to throw away kitchen garbage, jam when having prevented to filter.

While there have been shown and described what are at present considered the fundamental principles and essential features of the invention and its advantages, it will be apparent to those skilled in the art that the invention is not limited to the details of the foregoing exemplary embodiments, but is capable of other specific forms without departing from the spirit or essential characteristics thereof. The present embodiments are therefore to be considered in all respects as illustrative and not restrictive, the scope of the invention being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein. Any reference sign in a claim should not be construed as limiting the claim concerned.

Furthermore, it should be understood that although the present description refers to embodiments, not every embodiment may contain only a single embodiment, and such description is for clarity only, and those skilled in the art should integrate the description, and the embodiments may be combined as appropriate to form other embodiments understood by those skilled in the art.

Claims

1. The garbage treatment equipment for environmental sanitation cleaning structurally comprises a rack (1), a motor (2), a transmission rod (3), a treatment structure (4), a conveying cylinder (5) and a liquid collecting box (6), wherein the motor (2) is installed at the upper end of the rack (1), the transmission rod (3) is embedded and installed on the inner side of the motor (2), the treatment structure (4) is fixed at the upper end of the rack (1), the conveying cylinder (5) is embedded and installed at the right end of the treatment structure (4), and the liquid collecting box (6) is horizontally installed at the upper end of the rack (1); the method is characterized in that:

the treatment structure (4) comprises a feed hopper (41), a separation paddle (42), a case (43) and a solid-liquid separation structure (44), wherein the feed hopper (41) is obliquely arranged at the upper end of the case (43), the separation paddle (42) is embedded into the inner side of the case (43), the left end of the separation paddle (42) is connected with the transmission rod (3) through a belt, the solid-liquid separation structure (44) is horizontally arranged at the lower end of the case (43), and the left side of the solid-liquid separation structure (44) is clamped with the transmission rod (3);

the solid-liquid separation structure (44) comprises a support (441), a side communication port (442), a material conveying paddle (443), a separation net (444) and a liquid collecting hopper (445), wherein the side communication port (442) is arranged at the side end of the support (441), the material conveying paddle (443) is embedded in the support (441), the right end of the side communication port (442) is communicated with the conveying cylinder (5), the material conveying paddle (443) is embedded in the conveying cylinder (5), the separation net (444) is arranged on the inner side of the support (441), and the liquid collecting hopper (445) is fixed at the lower end of the inner side of the support (441);

the material conveying paddle (443) comprises a paddle (43 a), an inner shaft (43 b), a fixing plate (43 c) and an extending structure (43 d), wherein the paddle (43 a) is installed on the outer side of the inner shaft (43 b), the extending structure (43 d) is uniformly distributed along the outer side of the paddle (43 a), and the fixing plate (43 c) is installed on the outer side of the paddle (43 a);

the extension structure (43 d) comprises an outer embedded block (d 1), an inner groove (d 2), a rotating frame (d 3) and a scraper (d 4), wherein the inner groove (d 2) is arranged on the inner side of the outer embedded block (d 1), the rotating frame (d 3) is installed on the outer side of the outer embedded block (d 1), and the scraper (d 4) is fixed at the lower end of the rotating frame (d 3);

the scraping plate (d 4) comprises a plate body (d 41), movable grooves (d 42), a front edge (d 43) and an inner guide groove (d 44), wherein the movable grooves (d 42) are distributed and recessed at the upper end of the inner side of the plate body (d 41), the front edge (d 43) is arranged at the front end of the plate body (d 41), and the inner guide groove (d 44) is recessed along the front edge (d 43) and connected with the plate body (d 41);

the separation net (444) comprises an inner panel (44 a), a partition (44 b), a blocking structure (44 c) and a through hole (44 d), wherein the inner panel (44 a) is installed on the outer side of the partition (44 b), the blocking structure (44 c) is embedded and installed on the inner side of the partition (44 b), and the through hole (44 d) penetrates through the inner side of the partition (44 b);

the blocking structure (44 c) comprises a movable structure (c 1), a rubber plate (c 2), an outer plate (c 3) and a filter tank (c 4), wherein the outer plate (c 3) is installed on the outer side of the movable structure (c 1), one end of the rubber plate (c 2) is embedded into the inner side of the outer plate (c 3), the other end of the rubber plate (c 2) is embedded into the inner side of the partition plate (44 b), the outer plates (c 3) are in mutual contact, and the filter tank (c 4) is recessed into the inner side of the outer plate (c 3);

the movable structure (c 1) comprises an outer ring (c 11), a connecting plate (c 12), a rotating groove (c 13), a rotating ball (c 14) and a guide groove (c 15), wherein the rotating groove (c 13) is formed in the inner side of the outer ring (c 11), the rotating ball (c 14) is embedded in the rotating groove (c 13), the connecting plate (c 12) is horizontally arranged at the upper end of the rotating ball (c 14), and the guide groove (c 15) is recessed around the inner side of the rotating ball (c 14).