CN218426753U

CN218426753U - Bearing installation system

Info

Publication number: CN218426753U
Application number: CN202222334352.3U
Authority: CN
Inventors: 邓顺文; 王长青; 李维军; 王正明; 陈万幸
Original assignee: Shanghai Baoye Group Corp Ltd
Current assignee: Shanghai Baoye Group Corp Ltd
Priority date: 2022-09-02
Filing date: 2022-09-02
Publication date: 2023-02-03
Anticipated expiration: 2032-09-02

Abstract

The utility model discloses a bearing installation system, which comprises a seat body, a central shaft and a bearing, wherein the inner diameter of the inner ring of the bearing is matched with the outer diameter of the central shaft, the bearing installation system also comprises an installation tool and a plurality of rotary screw rods which are uniformly distributed around the axis of the central shaft, the end part of the installation tool is provided with a positioning groove which is used for being clamped and sleeved on the inner ring of the bearing, and the rotary screw rods penetrate through the installation tool along the extension direction of the axis of the central shaft and are arranged in a rotating matching way with the installation tool; the tail end of the rotary screw is in threaded connection with the threaded hole in the central shaft, and the head of the rotary screw is abutted to one side, far away from the central shaft, of the mounting tool. The installation tool and a plurality of rotary screws are used for gradually pushing the bearing inner ring to move inwards while screwing in through the rotary screws. Whole promotion process, the simple structure of adoption, and the labour saving in operation, realization that simultaneously can be fine promotes the bearing and enters into between pedestal and the central shaft. The problem that the bearing is inconvenient to mount on the shaft can be effectively solved.

Description

Bearing installation system

Technical Field

The utility model relates to a bearing installation technical field, more specifically say, relate to a bearing installation system.

Background

On a strip steel production line, a coiler coil stripping trolley is required. As shown in fig. 1, fig. 1 is a partial structural schematic diagram of a coil stripping trolley in the prior art. Wherein a double-row conical bearing 300 is arranged between the traveling wheel shaft 100 and the car body 200 of the coil stripping car, a shaft end cover 400 and a bearing end cover 500 are arranged at the end part of the traveling wheel shaft 100, wherein the shaft end cover 400 is connected on the traveling wheel shaft 100 through a plurality of screws, and wherein the bearing end cover 500 covers on the shaft end cover 400 and is connected on the car body 200 through screws. Wherein the double-row conical bearing 300 is sleeved on the traveling wheel shaft 100, and the inner ring of the double-row conical bearing 300 is in interference fit with the traveling wheel shaft 100. Wherein the running wheel shaft 100 has running wheels thereon.

When the coil stripping trolley is assembled, particularly when the double-row conical bearing 300 is arranged between the travelling wheel shaft 100 and the trolley body 200, the double-row conical bearing 300 is generally pushed to move by strong force, but sometimes the pushing is uneven, so that the double-row conical bearing is blocked, and finally the double-row conical bearing has to be knocked by brute force to be installed, so that the bearing is damaged, the service life of the bearing is greatly shortened, and the assembling effect is poor.

In summary, how to effectively solve the problem that the bearing is inconvenient to mount on the shaft is a problem that needs to be solved urgently by those skilled in the art at present.

SUMMERY OF THE UTILITY MODEL

In view of this, the present invention provides a bearing mounting system, which can effectively solve the problem that the bearing is installed onto the shaft inconveniently.

In order to achieve the above object, the utility model provides a following technical scheme:

a bearing installation system comprises a seat body, a central shaft and a bearing, wherein the inner diameter of an inner ring of the bearing is matched with the outer diameter of the central shaft, the bearing installation system also comprises an installation tool and a plurality of rotary screw rods which are uniformly distributed around the axis of the central shaft, the end part of the installation tool is provided with a positioning groove which is used for being clamped and sleeved on the inner ring of the bearing, and the rotary screw rods penetrate through the installation tool along the extension direction of the axis of the central shaft and are arranged in a rotating matching way with the installation tool; the tail end of the rotary screw is in threaded connection with the threaded hole in the central shaft, and the head of the rotary screw is abutted to one side, far away from the central shaft, of the mounting tool.

In the bearing installation system, when installation is carried out, the central shaft penetrates through the seat body, the inner ring of the bearing is in butt joint with the central shaft, the positioning groove of the installation tool is sleeved on the inner ring and matched with the inner ring, and then the rotary screw penetrating through the installation tool is screwed in, so that the tail part of the rotary screw enters the threaded hole of the central shaft. Then, the respective rotary screws are rotated one by one so that the head portions of the respective rotary screws push the mounting tools to move toward the central shaft, and the mounting tools abut against the inner race of the bearing, thereby pushing the inner race of the bearing to move toward the inside of the central shaft. Wherein each rotating screw rod is rotated one by one, the rotating angle is not too large each time, and the excessive inclination of the installation tool is avoided. In the bearing mounting system, a mounting tool and a plurality of rotating screws are used for gradually pushing the bearing inner ring to move inwards while screwing in through the rotating screws. The whole pushing process is simple in structure and labor-saving in operation. Meanwhile, in the process of moving the bearing inwards, the bearing inner ring is mainly blocked, and the bearing can be well pushed to enter the space between the base and the central shaft by pushing the bearing inner ring. In conclusion, the bearing mounting system can effectively solve the problem that the bearing is inconvenient to mount on the shaft after being mounted.

Preferably, the mounting tool is a cylinder coaxially arranged with the central shaft, one end of the cylinder is an open end, the end face of the cylinder is provided with the positioning groove, the other end of the cylinder is sealed by a top plate, and the top plate is provided with a cylindrical through hole matched with the rotary screw.

Preferably, the wall of the cylinder is provided with an operation opening for fingers to extend into to support the rotary screw.

Preferably, the cylinder is provided with the operation ports at opposite sides.

Preferably, one end of the operation opening extends to the end face of the opening end; the width of the operation opening in the axial direction of the installation tool is between 48 cm and 52 cm, and the linear width of the operation opening in the circumferential direction of the installation tool is between 58 cm and 62 cm.

Preferably, the installation tool is a metal piece.

Preferably, the installation tool further comprises a C-shaped gasket, the C-shaped gasket is located between the installation tool and the head of the rotary screw, and the C-shaped gasket is clamped on the rod of the rotary screw and can be transversely moved out in the radial direction.

Preferably, the positioning groove is in clearance fit with the outer side of the bearing inner ring.

Preferably, the threaded hole is a threaded hole for connecting a shaft end cover.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without creative efforts.

FIG. 1 is a schematic view of a partial structure of a coil stripping trolley in the prior art;

fig. 2 is a schematic structural diagram of a bearing mounting system according to an embodiment of the present invention;

fig. 3 is an axial structural schematic view of an installation tool provided by an embodiment of the present invention;

fig. 4 is a schematic radial structure diagram of an installation tool according to an embodiment of the present invention.

The drawings are numbered as follows:

the traveling wheel comprises a traveling wheel shaft 100, a vehicle body 200, a double-row conical bearing 300, a shaft end cover 400 and a bearing end cover 500;

the device comprises a base body 1, a central shaft 2, a bearing 3, an installation tool 4, a rotary screw 5, a positioning groove 41, an operation opening 42, a cylindrical through hole 43, a top plate part 44 and a cylinder 45.

Detailed Description

The embodiment of the utility model discloses bearing installation system to solve the bearing effectively and pack into to the epaxial inconvenient problem of installation.

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative efforts all belong to the protection scope of the present invention.

Referring to fig. 1-4, fig. 1 is a schematic view of a partial structure of a coil stripping trolley in the prior art; fig. 2 is a schematic structural diagram of a bearing mounting system according to an embodiment of the present invention; fig. 3 is an axial structural schematic view of an installation tool provided by an embodiment of the present invention; fig. 4 is a schematic radial structure diagram of an installation tool according to an embodiment of the present invention.

In a specific embodiment, the present embodiment provides a bearing mounting system, a state that the bearing 3 is installed between the central shaft 2 and the housing 1, and is mainly characterized in that an assembling tool is provided, and the assembling tool mainly comprises a mounting tool 4 and a rotating screw 5.

The bearing 3 is generally a double-row conical bearing, but other bearings 3 may be adopted. Wherein the bearing 3 mainly comprises an inner ring, an outer ring and a roller between the inner ring and the outer ring. The inner diameter of the inner ring of the bearing 3 is matched with the outer diameter of the central shaft 2, namely, the inner diameter is approximately equal to the outer diameter of the central shaft, and the inner diameter and the outer diameter are generally in interference fit; the outer diameter of the outer ring of the bearing 3 is matched with the bearing hole on the seat body 1, namely, the outer diameter is approximately equal, and the outer diameter and the bearing hole are in clearance fit.

Wherein the installation tool 4 can be a general plate, block or cylinder, but the strength of the installation tool 4 needs to meet the requirement of pushing the inner ring of the bearing 3 onto the central shaft 2. The bearing 3 is generally made of metal, such as iron or aluminum alloy.

The end of the mounting tool 4 is provided with a positioning groove 41 for being clamped and sleeved on the inner ring of the bearing 3, and the end surface of the inner ring is abutted against the groove bottom of the positioning groove 41 in the axial direction of the central shaft 2. The groove wall of the positioning groove 41 is sleeved on the outer side wall of the inner ring and matched with the outer side wall of the inner ring to keep relative fixation in the radial direction, and the position relation between the positioning groove and the outer side wall can be restrained while the support is achieved. And the end surface of the inner ring is abutted against the groove bottom of the positioning groove 41 in the axial direction of the central shaft 2, so that force is transmitted in the axial direction.

The number of the rotating screws 5 distributed uniformly around the axis of the central shaft 2 may be specifically three to five rotating screws 5, and may be two or more than six rotating screws 5. When three rotating screws 5 are selected, included angles between any two corresponding rotating screws 5 relative to the axis of the central shaft 2 are equal and are all 120 degrees, and the three rotating screws 5 can be placed according to three angular points of a regular triangle; correspondingly, as shown in fig. 3, when four rotating screws 5 are selected, the included angles between two corresponding adjacent rotating screws 5 with respect to the axis of the central shaft 2 are all equal and are all 90 degrees, and the four rotating screws 5 can be placed according to four square corner points.

Wherein mounting tool 4 is worn to establish along 2 axis extending direction on the center pin by rotatory screw rod 5, and sets up with mounting tool 4 normal running fit, for convenient wearing to establish, generally takes clearance fit's mode. I.e. the mounting tool 4 is provided with a through hole for cooperation with the rotating screw 5. The screw 5 is rotated to match the non-threaded section with the through hole, or the threaded section with the through hole. The threaded screw comprises a screw rod and a head arranged at one end of the screw rod, wherein the screw rod is a threaded rod, the side surface of the screw rod is provided with an external thread matched with the internal thread of the threaded hole, the external thread can be arranged on the screw rod and extends from one end to the other end, and the external thread can also be partially extended from the screw rod.

Wherein the tail end of the rotating screw rod 5 is in threaded connection with the threaded hole on the central shaft 2, namely, the central shaft 2 is provided with a threaded hole extending along the axis of the central shaft 2, and the threaded hole is matched with the rotating screw rod 5.

The head of the rotary screw 5 abuts against the side of the mounting tool 4 remote from the central axis 2 so that when the rotary screw 5 is screwed into the threaded hole of the central axis 2, the head of the rotary screw 5 moves in the direction approaching the central axis 2, and since the head abuts against the mounting tool 4, the head gradually pushes the mounting tool 4 to move toward the central axis 2 while moving in the direction of the central axis 2.

In the above-mentioned bearing installation system, when installing, center pin 2 wears to establish in pedestal 1, and wherein bearing 3 inner circle butt joint center pin 2, then make mounting tool 4's positioning groove 41 cover establish on the inner circle, cooperate between the two, then wear to establish rotatory screw rod 5 on mounting tool 4, the precession to make the afterbody enter into in the screw hole of center pin 2. Then, the respective rotary screws 5 are rotated one by one so that the head portions of the respective rotary screws 5 push the mounting tool 4 to move toward the central shaft 2, and the inner race of the bearing 3 can be pushed to move toward the inside of the central shaft 2 because the mounting tool 4 abuts against the inner race of the bearing 3. Wherein each rotating screw 5 is rotated one by one, the rotating angle is not too large every time, and the installation tool 4 is prevented from being inclined too much. In this bearing mounting system, a mounting tool 4 and a plurality of rotating screws 5 are used to gradually push the inner race of the bearing 3 inwardly while being screwed in by the rotating screws 5. The whole pushing process is simple in structure and labor-saving in operation. Meanwhile, in the process of moving the bearing 3 inwards, the inner ring of the bearing 3 is mainly blocked, and the bearing 3 can be well pushed to enter the space between the base body 1 and the central shaft 2 by pushing the inner ring of the bearing 3. In conclusion, the bearing mounting system can effectively solve the problem that the bearing 3 is inconvenient to mount on the shaft.

In some embodiments, the positioning groove 41 may be in clearance fit with the outer diameter of the inner ring of the bearing 3, so that when the installation tool 4 is slightly tilted by the rotating screw 5, the installation groove can be tilted as little as possible with the inner ring of the bearing 3.

In some embodiments, the installation tool 4 may be a plate structure, a block structure, or other structures. It is preferred here that the mounting tool 4 employs a cylinder 45 arranged coaxially with the central shaft 2. The cylinder 45 mainly comprises a circular tube, one end of the circular tube is open, and the other end of the circular tube is closed, so that the structure of the water barrel is the same as that of a circular groove.

Specifically, one end of the cylinder 45 is an open end, and the end surface of the cylinder 45 is provided with a positioning groove 41, it should be noted that the positioning groove 41 herein does not refer to an inner cavity of the cylinder 45, but is a notch provided at one end of the cylinder 45, and the notch extends to be annular along the edge of the end portion of the cylinder 45. The diameter of the groove wall of the positioning groove 41 is larger than the diameter of the inner wall of the cylinder 45 and smaller than the diameter of the outer wall of the cylinder 45, and the groove wall of the positioning groove 41, the inner wall of the cylinder 45 and the outer wall of the cylinder 45 are coaxially arranged or approximately coaxially arranged. And the groove bottom of the positioning groove 41 is a shoulder surface in the cylinder 45 and is used for abutting against the end surface of the inner ring of the bearing 3, the diameter of the inner wall of the cylinder 45 is smaller than the outer diameter of the inner ring of the bearing 3, and preferably, the diameter of the cylinder 45 is larger than or equal to the inner diameter of the inner ring of the bearing 3 in some embodiments.

The other end of the cylinder 45 is sealed by a top plate 44, wherein the top plate 44 and the wall of the cylinder 45 are generally integrally formed or fixed by welding. And wherein the top plate portion 44 has a cylindrical through hole 43 matching with the rotary screw 5, and each rotary screw 5 passes through the cylindrical through hole 43 and is in threaded connection with the central shaft 2, wherein the rotary screw 5 can be separated from the cylindrical through hole 43, or can be separated from the cylindrical through hole 43 by a limit structure.

In some embodiments, the wall of the cylinder 45 may be provided with an operation opening 42 for a finger to enter to support the rotating screw 5, and because the through hole is in clearance fit with the rotating screw 5, the rotating screw 5 may be inclined, which results in poor butt joint between the rotating screw 5 and the threaded hole on the central shaft 2. And because of the bearing 3, the cylinder 45 structure, etc., the threaded hole cannot be directly observed. The operation opening 42 is arranged, so that the threaded hole can be observed more conveniently. Through stretching into with the finger, can support rotatory screw rod 5, can judge whether rotatory screw rod 5 has alignd the screw hole through the touch of finger simultaneously.

In some embodiments, the cylinder 45 may be provided with the operation openings 42 at two opposite sides, one side for inserting fingers and the other side for observation when performing operation. Meanwhile, because the operation ports 42 are arranged on the two sides, the rotary screw 5 can be supported nearby, and meanwhile, the operation ports 42 are prevented from being arranged on one side to influence strength.

Specifically, one end of the operation opening 42 may extend to the end surface of the opening end to form an opening structure, that is, one operation opening 42 may be disposed at both opposite sides of the opening end of the cylinder 45, so as to facilitate the operation.

Specifically, the following may be used: wherein the width of the operation opening 42 in the axial direction of the installation tool 4 is between 48 cm and 52 cm, and a specific width may be 50 mm; wherein the linear width of the operation opening 42 in the circumferential direction of the installation tool 4 is between 58 cm and 62 cm, and the specific linear width may be 60 mm in diameter.

In some embodiments, wherein the installation tool 4 may be a piece of metal, a cylindrical piece may be used, for example, having an axial length of about 94 mm, and being bored at one end to form a slot, which may have a depth of about 77 mm, to form the cylinder 45. Reaming is then continued at the open end, for example at an axial depth of 2 mm to 3 mm, in particular 2.5 mm, and at a radial depth of 3 mm to 4 mm, in particular 3.5 mm. An opening with the depth of 50 mm and the width of about 60 mm is dug on the wall of the cylinder on the two opposite sides of the opening end to be used as an operation opening 42. And a plurality of cylindrical through holes 43 are arranged at the bottom of the cylinder, and the diameter of the cylindrical through holes 43 is 17 mm to 18 mm, so that the diameter of the rotary screw 5 can meet the requirement.

In some embodiments, considering that the depth of the threaded hole formed in the central shaft 2 is not too deep, which affects the strength of the central shaft 2, it is preferable to further include a C-shaped gasket, which is located between the installation tool 4 and the head of the rotating screw 5, and the C-shaped gasket is clamped on the rod of the rotating screw 5 and can be moved out radially and transversely. At the initial stage of work, can take out C type gasket, the head of rotatory screw rod 5 at this moment directly offsets with mounting tool 4, along with bearing 3 pushes the degree of depth and increases, the afterbody of rotatory screw rod 5 gets into screw hole bottom this moment, can reverse rotation screw rod 5 this moment, rotatory screw rod 5 back of screwing out relative mounting tool 4, form the clearance between head and the mounting tool 4 this moment, go into C type gasket card to rotatory screw rod 5 on, and both sides offset with head and mounting tool 4 respectively, the head offsets with mounting tool 4 indirectly this moment, then continue to screw in rotatory screw rod 5 soon, the head passes through C type gasket, transmit thrust to mounting tool 4, continue to get into with propulsion bearing 3. If the pushing-in depth is not enough, the C-shaped gaskets can be added continuously, and when a plurality of C-shaped gaskets are added, the openings of the adjacent C-shaped gaskets can be arranged oppositely.

In some embodiments, the threaded holes may be threaded holes in connection with a shaft end cap to avoid re-threading the central shaft 2. When the bore depth of the threaded bore of the shaft end cap does not meet the thrust stroke requirements of the bearing 3, a C-washer may be added to fill in between the head and the installation tool 4. Specifically, four threaded holes may be uniformly provided along a circumference coaxial with the axis of the central shaft 2.

The embodiments in the present description are described in a progressive manner, each embodiment focuses on differences from other embodiments, and the same and similar parts among the embodiments are referred to each other.

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

Claims

1. A bearing installation system comprises a seat body, a central shaft and a bearing, wherein the inner diameter of an inner ring of the bearing is matched with the outer diameter of the central shaft; the tail end of the rotary screw is in threaded connection with the threaded hole in the central shaft, and the head of the rotary screw is abutted to one side, far away from the central shaft, of the mounting tool.

2. The bearing mounting system according to claim 1, wherein the mounting tool is a cylinder disposed coaxially with the central shaft, one end of the cylinder is open and the positioning groove is opened on the end surface, the other end of the cylinder is closed by a top plate portion, and the top plate portion has a cylindrical through hole for engaging with the rotary screw.

3. The bearing mounting system of claim 2 wherein the barrel wall defines an access opening for a finger to extend into to support the rotating screw.

4. A bearing mounting system according to claim 3, wherein the barrel is provided with said access opening on opposite sides.

5. The bearing mounting system of claim 4, wherein the access opening extends at one end to the open end face; the width of the operation opening in the axial direction of the installation tool is between 48 cm and 52 cm, and the linear width of the operation opening in the circumferential direction of the installation tool is between 58 cm and 62 cm.

6. The bearing mounting system of claim 5 wherein the mounting tool is a metal piece.

7. The bearing mounting system of any one of claims 1-6, further comprising a C-washer located between the mounting tool and the rotating screw head, the C-washer captured on the shaft of the rotating screw and capable of radial lateral removal.

8. The bearing mounting system of claim 7 wherein the detent is a clearance fit with the outer side of the bearing inner race.

9. The bearing mounting system of claim 8 wherein the threaded hole is a threaded hole for attaching a shaft end cap.