CN114165525B

CN114165525B - Bearing adapter sleeve convenient to install

Info

Publication number: CN114165525B
Application number: CN202111533473.4A
Authority: CN
Inventors: 董玉伟; 宋星星; 李海山; 周永军; 梁玉龙; 谢玉华
Original assignee: Xiangshui Haiyuan Fastening Lining Manufacturing Co ltd
Current assignee: Xiangshui Haiyuan Fastening Lining Manufacturing Co ltd
Priority date: 2021-12-15
Filing date: 2021-12-15
Publication date: 2022-09-23
Anticipated expiration: 2041-12-15
Also published as: CN114165525A

Abstract

The invention relates to the technical field of bearing fastening, in particular to a bearing adapter sleeve convenient to mount, which comprises an adapter sleeve body, wherein a fastening mechanism is mounted on the adapter sleeve body, a limiting mechanism is connected onto the fastening mechanism, an abutting mechanism is mounted on the adapter sleeve body, a protection mechanism is mounted inside the adapter sleeve body, and a lubricating mechanism is mounted inside the adapter sleeve body; be favorable to conveniently installing block and dismantlement bearing and mechanical axis under fastening device's the effect, be favorable to carrying on fine spacing between fastening device and the adapter sleeve body under the effect through stop gear, make the firm difficult pine of fastening device installation take off, be favorable to conflicting the reinforcement to installing the bearing on the adapter sleeve body under the effect through conflict mechanism and safeguard mechanism, it is firm to make the bearing installation, be favorable to lubricating the work to adapter sleeve body inside under the effect through lubricated mechanism, thereby convenient better use, and prolonged life.

Description

Bearing adapter sleeve convenient to install

Technical Field

The invention relates to the technical field of bearing fastening, in particular to a bearing adapter sleeve convenient to mount.

Background

The adapter sleeve is the most commonly used part when the bearing with the taper hole is positioned on the cylindrical shaft, because the shaft sleeve can be used for the optical shaft or the stepped shaft, the shaft sleeve is easy to install and does not need to be additionally fixed on the shaft, when the adapter sleeve is used on the optical shaft, the bearing can be positioned at any position on the shaft, and when the adapter sleeve is used together with the stepped ring on the stepped shaft, the bearing can be accurately positioned in the axial direction, and the dismounting of the bearing is also facilitated.

However, traditional tight fit when the nut contradicts the packing ring when fastening, because the nut rotates in packing ring one side and promotes the packing ring and slide, the nut causes packing ring and nut wearing and tearing easily with the packing ring friction, it is spacing through packing ring edge bending and nut draw-in groove when spacing to the nut simultaneously, the packing ring is buckled for a long time and is caused the packing ring fracture damage easily, and tight fit surface is smooth simultaneously, and the bearing is when long-time rotation during operation, and the bearing takes place to slide off-centre easily, causes the bearing wearing and tearing.

Disclosure of Invention

Aiming at the problems in the prior art, the invention provides a bearing adapter sleeve convenient to mount.

The technical scheme adopted by the invention for solving the technical problems is as follows: the utility model provides a bearing adapter sleeve convenient to installation, includes the adapter sleeve body, install fastening device on the adapter sleeve body, the last stop gear that is connected with of fastening device, install conflict mechanism on the adapter sleeve body, adapter sleeve body internally mounted has protection machanism, adapter sleeve body internally mounted has lubricated mechanism.

Specifically, fastening device is including changeing the cover, adapter sleeve body one end threaded connection has the cover of changeing, the adapter sleeve body other end is inside hollow toper structure, it rotates to overlap one side and is connected with the carousel to change, carousel one side is the annular and is connected with a plurality of shell fragments, be equipped with logical groove on the adapter sleeve body, the leather sheath is installed to adapter sleeve body inboard, it is equipped with a plurality of recesses that are annular equidistance and distributes to change the cover lateral wall.

Specifically, the other end of the adapter sleeve body is fixedly connected with a positioning sleeve, the positioning sleeve is of a hollow round table-shaped structure, and a leather pad of an annular structure is installed on one side of the positioning sleeve.

The limiting mechanism comprises a movable groove, a movable groove is formed in one side of the rotating sleeve, the movable groove is of a convex character structure, the push block is of a T-shaped structure, one end width of the push block is smaller than one end width of the movable groove, one side of the rotating sleeve is provided with a guide groove distributed in a plurality of annular shapes, the guide groove is communicated with the movable groove, the sliding plate is connected with the sliding plate in the movable groove, an abutting spring is installed on the sliding plate, a limiting block is installed on the abutting spring, the limiting block penetrates through the guide groove and extends to the clamping in the through groove, the push block is fixedly connected with the limiting block vertically, and the push block extends to the outside of the rotating sleeve.

The utility model discloses a mechanism for supporting, including the tight fit body lateral wall, the tight fit body lateral wall is installed four and is changeed the board, it is dentate structure to change board one side, it rotates with tight fit body lateral wall through the pivot to change the board and is connected, the inside sliding connection of tight fit body has four drive blocks, tight fit body lateral wall rotates and is connected with four lead screws, lead screw one end and the inside threaded connection of drive block, the nut is installed to the lead screw other end, the nut rotates with tight fit body lateral wall and is connected.

Specifically, the protection machanism includes the screw rod, the inside threaded connection of adapter sleeve body lateral wall has four screw rods, four screw rod one end is contradicted with the nut, four the screw rod other end extends to inside the position sleeve, screw rod and position sleeve threaded connection, sliding connection has four commentaries on classics pieces, four on the position sleeve the screw rod respectively with four commentaries on classics piece fixed connection.

Specifically, lubricated mechanism includes the oil storage tank, the inside four oil storage tanks that are equipped with of adapter sleeve body lateral wall, the block is connected with four leather plugs on the adapter sleeve body, inside the leather plug extends to the oil storage tank, the inside oil groove of leading that is equipped with four of adapter sleeve body lateral wall, the oil storage tank with lead the oil groove intercommunication, the inside four foam-rubber cushions that are equipped with of adapter sleeve body lateral wall, four lead oil groove one end through four foam-rubber cushions and commentaries on classics board intercommunication, four lead oil groove one end respectively with four lead screw intercommunications.

The invention has the beneficial effects that:

(1) the bearing adapter sleeve convenient to mount is beneficial to mounting, clamping and dismounting the bearing and the mechanical shaft conveniently under the action of the fastening mechanism, namely: the bearing is connected with the mechanical shaft under the action of the adapter sleeve body, the adapter sleeve is convenient to rotate by a wrench under the action of a plurality of grooves, so that the adapter sleeve is close to one side of the bearing under the action of threads, the rotary disc and the elastic sheet which are installed on one side of the adapter sleeve are favorable for abutting against one side of the bearing, because the other end of the adapter sleeve body is of a conical structure, the bearing is firmly clamped on the adapter sleeve body under the abutting of the rotary sleeve and the elastic sheet, and simultaneously, the adapter sleeve body can be contracted and firmly clamped with the mechanical shaft under the action of the through grooves, the anti-slip effect is realized under the action of the leather sleeve, the rotary sleeve cannot wear the elastic sheet through the rotation of the rotary disc and the adapter sleeve body, the other side of the bearing is favorable for abutting against the positioning sleeve, the bearing is prevented from loosening, and the protection effect is realized through the abutting of the leather pad and the bearing, reduce the abrasion of the bearing and play a role of skid resistance.

(2) The bearing adapter sleeve convenient to install is beneficial to good limiting between the fastening mechanism and the adapter sleeve body under the action of the limiting mechanism, so that the fastening mechanism is firmly installed and is not easy to loosen, namely: be favorable to making the stopper run through in the guide slot extend to lead to the inslot block spacing through the effect of conflict spring down, it is difficult for rotating the cover on the tight fit sleeve body to make, through promoting the ejector pad, make the ejector pad drive the stopper with lead to groove and the inside roll-off of guide slot, then promote the ejector pad, make the stopper slide along activity inslot portion under the effect of slide, make stopper one end and guide slot keep away from, be favorable to making the stopper contradict in activity inslot portion and place, conveniently change the cover and rotate with tight fit sleeve body and fasten and dismantle work.

(3) The bearing adapter sleeve convenient to install is beneficial to abutting and reinforcing a bearing installed on the adapter sleeve body under the action of the abutting mechanism and the protection mechanism, so that the bearing is firmly installed, namely: after stable with adapter sleeve body block through the bearing, rotate the nut through the spanner, make nut drive lead screw at the inside rotation of adapter sleeve body, make lead screw drive block slide at adapter sleeve body inside under the effect of screw thread, and contradict to the deflector, make and change the board and rotate to the outside, thereby contradict to the bearing inside wall, design through dentate structure, make and change the board and contradict firmly can not slide to the bearing, make the bearing more stable firm with the installation of adapter sleeve body, through changeing the board and contradict firmly the back with the bearing, rotate four commentaries on classics pieces through the spanner, it drives the screw rod rotation to make to change the piece, the screw rod contradicts to the nut under the effect of screw thread, be favorable to preventing the nut rotation, it is not hard up to cause between commentaries on classics board and the bearing.

(4) The bearing adapter sleeve convenient to mount is beneficial to lubricating the interior of the adapter sleeve body under the action of the lubricating mechanism, so that the bearing adapter sleeve is convenient and better to use, and the service life is prolonged, namely: be favorable to protecting and the oiling to the oil storage tank under the effect through the leather plug, be favorable to passing through the foam-rubber cushion with lubricating oil under the effect of leading the oil groove to the deflector is inside lubricated to carry out lubricated work to the lead screw through leading the oil groove, be favorable to lubricating oil slowly to invade through the foam-rubber cushion simultaneously and change the board bottom side, make things convenient for the lubricated fuel feeding that the lead screw also can be fine.

Drawings

The invention is further illustrated with reference to the following figures and examples.

FIG. 1 is a schematic overall structural view of a preferred embodiment of a bearing adapter sleeve for ease of installation in accordance with the present invention;

FIG. 2 is a schematic view of the connection structure of the adapter sleeve body, the rotary sleeve and the positioning sleeve;

FIG. 3 is an enlarged view of the part A shown in FIG. 2;

FIG. 4 is a schematic view of the internal structure of the swivel sleeve of the present invention;

FIG. 5 is an enlarged view of the part B shown in FIG. 2;

fig. 6 is a schematic view of a connection structure of the limiting block and the abutting spring according to the present invention.

In the figure: 1. a adapter sleeve body; 2. a fastening mechanism; 201. rotating the sleeve; 202. a positioning sleeve; 203. a leather pad; 204. a groove; 205. a leather sheath; 206. a through groove; 207. a turntable; 208. a spring plate; 3. a limiting mechanism; 301. a movable groove; 302. a guide groove; 303. a limiting block; 304. against the spring; 305. a slide plate; 306. pushing a block; 4. a collision mechanism; 401. rotating the plate; 402. a rotating shaft; 403. a drive block; 404. a screw rod; 405. a nut; 5. a protection mechanism; 501. rotating the block; 502. a screw; 6. a lubricating mechanism; 601. a plug of leather; 602. an oil storage tank; 603. an oil guide groove; 604. a spongy cushion.

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.

As shown in fig. 1-6, the bearing adapter sleeve convenient to mount comprises an adapter sleeve body 1, wherein a fastening mechanism 2 is mounted on the adapter sleeve body 1, a limiting mechanism 3 is connected to the fastening mechanism 2, a collision mechanism 4 is mounted on the adapter sleeve body 1, a protection mechanism 5 is mounted inside the adapter sleeve body 1, and a lubricating mechanism 6 is mounted inside the adapter sleeve body 1.

Specifically, the fastening mechanism 2 includes a rotating sleeve 201, one end of the fastening sleeve body 1 is in threaded connection with the rotating sleeve 201, the other end of the fastening sleeve body 1 is in a hollow conical structure, one side of the rotating sleeve 201 is in rotary connection with a turntable 207, one side of the turntable 207 is in annular connection with a plurality of elastic sheets 208, the fastening sleeve body 1 is provided with a through groove 206, a leather sleeve 205 is installed on the inner side of the fastening sleeve body 1, the side wall of the rotating sleeve 201 is provided with a plurality of grooves 204 distributed in annular equal distance, the fastening sleeve body 1 is beneficial to connecting a bearing and a mechanical shaft under the action of the fastening sleeve body 1, the rotating sleeve 201 is convenient to rotate through a wrench under the action of the plurality of grooves 204, so that the rotating sleeve 201 is close to one side of the bearing under the action of threads, and the turntable 207 and the elastic sheets 208 installed on one side of the rotating sleeve 201 are beneficial to abutting one side of the bearing, because the other end of the adapter sleeve body 1 is of a conical structure, the rotary sleeve 201 is firmly clamped with the elastic sheet 208 under the collision of the bearing on the adapter sleeve body 1, and meanwhile, the adapter sleeve body 1 can be contracted and firmly clamped with a mechanical shaft under the action of the through groove 206, so that the anti-skidding effect is achieved under the action of the leather sheath 205, and the rotary sleeve 201 cannot wear the elastic sheet 208 through the rotation of the rotary disc 207 and the adapter sleeve body 1.

Specifically, 1 other end fixedly connected with position sleeve 202 of adapter sleeve body, position sleeve 202 is inside hollow round platform shape structure, position sleeve 202 installs the leather packing 203 of loop configuration in one side, through be favorable to conflicting to the opposite side of bearing under the effect of position sleeve 202, prevent that the bearing is not hard up, thereby has played the effect of protection through conflicting of leather packing 203 with the bearing simultaneously, reduces the wearing and tearing of bearing to skid-proof effect has been played.

Specifically, stop gear 3 is including activity groove 301, it is equipped with activity groove 301 to change 201 one side of cover, activity groove 301 is "protruding" font structure, ejector pad 306 is "T" shape structure, ejector pad 306 one end width is less than activity groove 301 one end width, it is equipped with a plurality of annular distribution's guide slot 302 to change 201 one side of cover, guide slot 302 and activity groove 301 intercommunication, activity groove 301 inside sliding connection has slide board 305, install conflict spring 304 on the slide board 305, install stopper 303 on the conflict spring 304, stopper 303 runs through in guide slot 302 and extends to leading to the inside block of groove 206, perpendicular fixedly connected with ejector pad 306 on the stopper 303, ejector pad 306 extends to and changes 201 outsidely, through be favorable to making under the effect of conflict spring 304 the stopper 303 run through in guide slot 302 extend to it is spacing to lead to the inside block of groove 206, make change cover 201 and be in difficult rotation on the tight cover body 1, through promoting ejector pad 306 makes ejector pad 306 drives stopper 303 with lead to groove 206 with the inside roll-off of guide slot 302, then promote ejector pad 306 makes stopper 303 is in follow under the effect of slide 305 the inside slip of activity groove 301 makes stopper 303 one end with guide slot 302 is kept away from, is favorable to making stopper 303 is in the inside conflict of activity groove 301 is placed, and is convenient change cover 201 with tight cover body 1 rotates and fastens and dismantles work.

Specifically, the abutting mechanism 4 includes a rotating plate 401, four rotating plates 401 are mounted on the side wall of the adapter sleeve body 1, one side of each rotating plate 401 is of a toothed structure, the rotating plate 401 is rotatably connected with the side wall of the adapter sleeve body 1 through a rotating shaft 402, four driving blocks 403 are slidably connected inside the adapter sleeve body 1, four lead screws 404 are rotatably connected with the side wall of the adapter sleeve body 1, one ends of the lead screws 404 are in threaded connection with the inside of the driving blocks 403, nuts 405 are mounted at the other ends of the lead screws 404, the nuts 405 are rotatably connected with the side wall of the adapter sleeve body 1, after being stably clamped with the adapter sleeve body 1 through bearings, the nuts 405 are rotated through a wrench, the lead screws 405 drive the lead screws 404 to rotate inside the adapter sleeve body 1, the lead screws 404 drive the driving blocks 403 to slide inside the adapter sleeve body 1 under the action of threads, and right it is contradicted to change board 401, makes it rotates to the outside of board 401 to contradict the bearing inside wall, through dentate structure's design, make it is firm can not slide to change board 401 contradicts the bearing, make the bearing with adapter sleeve body 1 installation is more stable firm.

Specifically, protection machanism 5 includes screw rod 502, the internal thread connection of 1 lateral wall of adapter sleeve body has four screw rods 502, four screw rod 502 one end is contradicted with nut 405, four the screw rod 502 other end extends to inside the position sleeve 202, screw rod 502 and position sleeve 202 threaded connection, sliding connection has four commentaries on classics piece 501, four on the position sleeve 202 screw rod 502 respectively with four commentaries on classics piece 501 fixed connection, through changeing board 401 and the firm back of bearing conflict, rotate four through the spanner changeing piece 501, make changeing piece 501 drives screw rod 502 rotates, under the effect of screw thread screw rod 502 is right nut 405 conflicts, is favorable to preventing nut 405 rotates, causes it is not hard up between changeing board 401 and the bearing.

Specifically, the lubricating mechanism 6 includes an oil storage tank 602, four oil storage tanks 602 are arranged inside the side wall of the adapter sleeve body 1, four leather plugs 601 are connected to the adapter sleeve body 1 in a clamping manner, the leather plugs 601 extend into the oil storage tanks 602, four oil guide grooves 603 are arranged inside the side wall of the adapter sleeve body 1, the oil storage tanks 602 are communicated with the oil guide grooves 603, four sponge pads 604 are arranged inside the side wall of the adapter sleeve body 1, one ends of the four oil guide grooves 603 are communicated with the rotating plate 401 through the four sponge pads 604, one ends of the four oil guide grooves 603 are respectively communicated with the four lead screws 404, the oil storage tanks 602 are protected and filled with lubricating oil under the action of the leather plugs 601, lubricating oil is lubricated inside the rotating plate 401 through the sponge pads 604 under the action of the oil guide grooves 603, and the lead screws 404 are lubricated through the oil guide grooves 603, meanwhile, lubricating oil can slowly invade into the bottom side of the rotating plate 401 through the spongy cushion 604, and the screw rod 404 can be lubricated and supplied with oil well.

When the invention is used, firstly, the bearing is favorably connected with a mechanical shaft under the action of the adapter sleeve body 1, the rotating sleeve 201 is conveniently rotated by a wrench under the action of the plurality of grooves 204, so that the rotating sleeve 201 approaches to one side of the bearing under the action of threads, the rotating disc 207 and the elastic sheet 208 which are arranged at one side of the rotating sleeve 201 are favorable for abutting one side of the bearing, because the other end of the adapter sleeve body 1 is of a conical structure, the bearing is firmly clamped on the adapter sleeve body 1 under the abutting of the rotating sleeve 201 and the elastic sheet 208, simultaneously, the adapter sleeve body 1 can be contracted and firmly clamped with the mechanical shaft under the action of the through groove 206, the antiskid effect is realized under the action of the leather sheath 205, the rotating sleeve 201 cannot abrade the elastic sheet 208 through the rotation of the rotating disc 207 and the adapter sleeve body 1, and the other side of the bearing is favorably abutted under the action of the positioning sleeve 202, the bearing is prevented from loosening, meanwhile, the function of protection is achieved through the interference between the leather pad 203 and the bearing, the abrasion of the bearing is reduced, the antiskid function is achieved, the limiting block 303 penetrates through the guide groove 302 and extends to the inside of the guide groove 206 to be clamped and limited under the action of the interference spring 304, the rotating sleeve 201 is enabled not to rotate easily on the fastening sleeve body 1, the pushing block 306 is enabled to drive the limiting block 303 to slide out of the guide groove 206 and the inside of the guide groove 302 through pushing the pushing block 306, then the pushing block 306 is pushed, the limiting block 303 slides along the inside of the movable groove 301 under the action of the sliding plate 305, one end of the limiting block 303 is enabled to be far away from the guide groove 302, the limiting block 303 is enabled to be placed in an interference mode inside the movable groove 301, the rotating sleeve 201 and the fastening sleeve body 1 can rotate conveniently to carry out fastening and detaching work, after the bearing is stably clamped with the fastening sleeve body 1, the nut 405 is rotated through a spanner, the nut 405 is enabled to drive the screw rod 404 to rotate inside the fastening sleeve body 1, the screw rod 404 drives the driving block 403 to slide in the interior of the adapter sleeve body 1 under the action of the threads, the rotating plate 401 is abutted, the rotating plate 401 is enabled to rotate towards the outer side, so that the inner side wall of the bearing is abutted, the rotating plate 401 is firmly abutted against the bearing and cannot slide through the design of the tooth-shaped structure, the bearing and the adapter sleeve body 1 are more stably and firmly installed, after the rotating plate 401 is firmly abutted against the bearing, the four rotating blocks 501 are rotated through a spanner, the rotating blocks 501 drive the screw rod 502 to rotate, the screw rod 502 is abutted against the screw cap 405 under the action of the threads, the screw cap 405 is prevented from rotating, the rotating plate 401 and the bearing are loosened, the oil storage tank 602 is protected and filled with oil under the action of the leather plug 601, lubricating oil is lubricated in the interior of the rotating plate 401 through the sponge pad 604 under the action of the oil guide tank 603, and the screw rod 404 is lubricated through the oil guide tank 603, meanwhile, the spongy cushion 604 is beneficial to lubricating oil to slowly invade the bottom side of the rotating plate 401, so that the screw rod 404 can be lubricated and supplied with oil well.

It will be evident to those skilled in the art that the invention is not limited to the details of the foregoing illustrative embodiments, and that the present invention may be embodied in other specific forms without departing from the spirit or essential attributes 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 specification describes embodiments, not every embodiment includes only a single embodiment, and such description is for clarity purposes only, and it is to be understood that all embodiments may be combined as appropriate by one of ordinary skill in the art to form other embodiments as will be apparent to those of skill in the art from the description herein.

Claims

1. The bearing adapter sleeve convenient to mount is characterized by comprising an adapter sleeve body (1), wherein a fastening mechanism (2) is mounted on the adapter sleeve body (1), a limiting mechanism (3) is connected to the fastening mechanism (2), a collision mechanism (4) is mounted on the adapter sleeve body (1), a protection mechanism (5) is mounted inside the adapter sleeve body (1), and a lubricating mechanism (6) is mounted inside the adapter sleeve body (1);

the fastening mechanism (2) comprises a rotating sleeve (201), one end of the adapter sleeve body (1) is in threaded connection with the rotating sleeve (201), the other end of the adapter sleeve body (1) is of a conical structure with a hollow interior, one side of the rotating sleeve (201) is in rotary connection with a rotary disc (207), one side of the rotary disc (207) is in annular connection with a plurality of elastic sheets (208), a through groove (206) is formed in the adapter sleeve body (1), a leather sleeve (205) is installed on the inner side of the adapter sleeve body (1), and a plurality of grooves (204) which are distributed annularly and equidistantly are formed in the side wall of the rotating sleeve (201);

the other end of the adapter sleeve body (1) is fixedly connected with a positioning sleeve (202), the positioning sleeve (202) is of a hollow circular truncated cone-shaped structure, and one side of the positioning sleeve (202) is provided with a leather pad (203) of an annular structure;

the limiting mechanism (3) comprises a movable groove (301), the movable groove (301) is formed in one side of the rotating sleeve (201), a plurality of guide grooves (302) distributed in an annular mode are formed in one side of the rotating sleeve (201), the guide grooves (302) are communicated with the movable groove (301), a sliding plate (305) is connected to the inside of the movable groove (301) in a sliding mode, a collision spring (304) is installed on the sliding plate (305), a limiting block (303) is installed on the collision spring (304), the limiting block (303) penetrates through the guide grooves (302) and extends to the inside of the through groove (206) to be clamped, a pushing block (306) is vertically and fixedly connected to the limiting block (303), and the pushing block (306) extends to the outside of the rotating sleeve (201);

the movable groove (301) is of a convex structure, the push block (306) is of a T-shaped structure, and the width of one end of the push block (306) is smaller than that of one end of the movable groove (301);

the collision mechanism (4) comprises a rotating plate (401), four rotating plates (401) are mounted on the side wall of the adapter sleeve body (1), the rotating plates (401) are rotatably connected with the side wall of the adapter sleeve body (1) through rotating shafts (402), four driving blocks (403) are slidably connected inside the adapter sleeve body (1), four lead screws (404) are rotatably connected with the side wall of the adapter sleeve body (1), and one ends of the lead screws (404) are in threaded connection with the inside of the driving blocks (403);

one side of the rotating plate (401) is of a toothed structure, the other end of the screw rod (404) is provided with a screw cap (405), and the screw cap (405) is rotatably connected with the side wall of the adapter sleeve body (1);

the protection mechanism (5) comprises a screw rod (502), four screw rods (502) are connected to the inner side of the side wall of the adapter sleeve body (1) in a threaded mode, one ends of the four screw rods (502) are abutted to a screw cap (405), the other ends of the four screw rods (502) extend into the positioning sleeve (202), the screw rods (502) are connected with the positioning sleeve (202) in a threaded mode, the positioning sleeve (202) is connected with four rotating blocks (501) in a sliding mode, and the four screw rods (502) are respectively fixedly connected with the four rotating blocks (501);

the lubricating mechanism (6) comprises oil storage tanks (602), four oil storage tanks (602) are arranged inside the side wall of the adapter sleeve body (1), four oil guide tanks (603) are arranged inside the side wall of the adapter sleeve body (1), the oil storage tanks (602) are communicated with the oil guide tanks (603), and one ends of the four oil guide tanks (603) are respectively communicated with the four screw rods (404);

the adapter sleeve body (1) is connected with four leather plugs (601) in a clamping mode, and the leather plugs (601) extend into the oil storage tank (602);

four sponge cushions (604) are arranged inside the side wall of the adapter sleeve body (1), and one ends of the oil guide grooves (603) are communicated with the rotating plate (401) through the four sponge cushions (604).