CN110815129A

CN110815129A - Bearing dismounting device

Info

Publication number: CN110815129A
Application number: CN201911074836.5A
Authority: CN
Inventors: 郝翠霞; 易建钢; 廖颖龙; 方帮绪; 李昌骏; 方子艳
Original assignee: Jianghan University
Current assignee: Jianghan University
Priority date: 2019-11-06
Filing date: 2019-11-06
Publication date: 2020-02-21
Anticipated expiration: 2039-11-06
Also published as: CN110815129B

Abstract

The invention discloses a bearing dismounting device.A fixed rod is clamped on the outer surface of the left side of a shell, a cylinder sequentially passes through a supporting seat, a top block and a chuck, a blocking block protruding at the left end of the cylinder abuts against an inner ring of a bearing to be dismounted, a clamping jaw of the chuck abuts against the inner ring and an outer ring of the bearing simultaneously, one end of the top block is attached to the chuck, the other end of the top block abuts against the supporting seat, the fixed rod is fixed in a strip-shaped hole of the supporting seat through a connecting piece, and the shell and the bearing to be dismounted; the ejector rod is in threaded connection with the connecting rod of the supporting seat, the cylinder body is in threaded connection with the ejector rod, the rotary propulsion of the ejector rod drives the rotary propulsion of the cylinder body, the ejector block pushes the chuck to move leftwards under the propulsion of the ejector rod, the left movement of the chuck enables the bearing to be disassembled to be separated from the inner hole of the shell, the disassembly of the bearing is realized, and the force borne by the cylinder body in the moving process is effectively borne by the tapered roller bearing; the column cap of one end of the ejector rod is provided with a hole, the rotating handle penetrates through the hole, and the rotating handle is rotated to enable the ejector rod to rotate leftwards and push forwards.

Description

Bearing dismounting device

Technical Field

The invention relates to the field of mechanical equipment disassembly, in particular to a bearing disassembling device.

Background

The bearing is an important part in present mechanical equipment, and when the bearing is used, the shaft and the bearing inner ring are usually in interference fit, and if the bearing needs to be disassembled from the shaft, the bearing is mostly handled by a puller. However, if the bearing needs to be taken out of the inner hole of the housing, the bearing is generally selected to be damaged instead of being disassembled, which not only increases the production cost, but also easily damages the inner hole of the housing when the bearing is directly damaged; if a double-pull-rod detacher or a three-pull-rod detacher is adopted, the bearing in the inner hole of the shell cannot be centered effectively when detached, and the bearing is stressed unevenly, so that the detachment is inconvenient and the bearing is easy to damage.

Therefore, how to smoothly disassemble and take out the bearing in the inner hole of the shell becomes a problem which needs to be solved urgently.

Disclosure of Invention

The invention provides a bearing dismounting device, which solves the problem that a bearing installed and fixed in an inner hole of a shell is difficult to effectively dismount and take out.

The scheme for solving the technical problems is as follows: the utility model provides a bearing dismounting device for will treat the bearing of dismantling and take out its characterized in that in the hole dismantlement of casing: the bearing dismounting device comprises a top rod, a cylinder, a supporting seat, a fixed rod, a top block and a chuck, wherein the shell and the top rod are respectively positioned at two sides of the supporting seat, a first threaded hole is formed in the supporting seat, first threads matched with the first threaded hole are formed in the outer side surface of the top rod, so that the top rod can rotate and push in the first threaded hole, the top rod is provided with a top-out end facing the bearing to be dismounted, a second threaded hole is formed in the end surface of the top-out end, and second threads matched with the second threaded hole are formed in the outer side surface of the cylinder; one end of the fixed rod is clamped with one side of the shell far away from the supporting seat, and the other end of the fixed rod is fixedly connected with the supporting seat; the kicking block with the equal detachably cover of chuck is located the cylinder, the chuck includes chuck body and jack catch, the chuck body is formed with the regulation hole, the jack catch set up in the one end of chuck body, work as the jack catch in when the chuck body stretches out, the chuck body is provided with the one end butt of jack catch treat the inner circle and the outer lane of the bearing of dismantling, the other end butt of chuck body the kicking block, the kicking block is kept away from the one end butt of chuck the ejecting end of ejector pin, the ejector pin in remove and promote in the first screw hole of supporting seat the kicking block with the chuck orientation the bearing of dismantling is removed.

Preferably, the dead lever is close to the one end of casing is joint portion, the joint face joint of joint portion the casing is kept away from one side of supporting seat, the third screw thread has been seted up to the lateral surface of dead lever, supporting seat evenly distributed with the bar hole of dead lever looks adaptation, the dead lever passes the bar hole and through the connecting piece with supporting seat fixed connection.

Preferably, the kicking block includes the ring that two diameters are different, the chuck is kept away from the one end detachably cover of casing is located the ring of kicking block one end, the ring butt of kicking block other end the member.

Preferably, the supporting seat comprises a tray body, a connecting rod and a handle, the connecting rod is provided with the first threaded hole along the length direction, the connecting rod penetrates through the tray body and is fixed on the tray body, and the handle is fixedly arranged on the periphery of the tray body.

Preferably, the bearing dismounting device further comprises a turning handle, one end of the ejector rod, which is far away from the bearing to be dismounted, is a column head, a hole matched with the turning handle is formed in the column head, and the turning handle penetrates through the hole in the column head to control the rotation of the ejector rod.

Preferably, one end of the cylinder, which is close to the bearing to be disassembled, extends outwards to form a protruding block, and the blocking block abuts against an inner ring of the bearing to be disassembled.

Preferably, the bearing detaching device further comprises a tapered roller bearing, the tapered roller bearing is detachably sleeved on the cylinder body, one end of the tapered roller bearing is attached to one end, close to the bearing to be detached, of the ejector rod, and the other end of the tapered roller bearing is abutted to the ejector block or is installed in a circular ring, close to one end of the supporting seat, of the ejector block.

The bearing dismounting device provided by the invention has the following beneficial effects: the fixing rod is clamped with the shell and fixedly connected with the supporting seat, the shell and the bearing to be disassembled are effectively fixed, the ejector rod moves towards the bearing to be disassembled in the first threaded hole of the supporting seat, the ejection end of the ejector rod is in threaded connection with the cylinder, a blocking block protrudes from one end of the cylinder, the cylinder sequentially penetrates through the tapered roller bearing, the ejector block, the chuck and the bearing to be disassembled, the blocking block abuts against the inner ring of the bearing to be disassembled, the chuck simultaneously abuts against the inner ring and the outer ring of the bearing to be disassembled, the stability and the uniform stress of the bearing in the disassembling process are ensured, and the bearing to be disassembled is effectively ejected out of the inner hole of the shell; the supporting seat is uniformly provided with strip-shaped holes, so that the number and the position of the fixed rods matched with the strip-shaped holes can be adjusted, and the supporting seat is suitable for different shells; the turning handle passes through the column cap of ejector pin, relies on the rotation of turning handle to drive the rotation of ejector pin, and is very convenient and laborsaving.

Drawings

The accompanying drawings, which are included to provide a further understanding of the invention and are incorporated in and constitute a part of this application, illustrate embodiment(s) of the invention and together with the description serve to explain the invention without limiting the invention, and in which:

FIG. 1 is an exploded view of one embodiment of a bearing removal device provided by the present invention;

FIG. 2 is a schematic structural diagram of an embodiment of a bearing dismounting device provided by the present invention;

FIG. 3 is a schematic structural view of an embodiment of the stem of the present invention;

FIG. 4 is a schematic structural view of an embodiment of a carrier rod according to the present invention;

FIG. 5 is a schematic view of the post-connection post embodiment of FIG. 4;

FIG. 6 is a schematic structural view of an embodiment of a support base according to the present invention;

FIG. 7 is a schematic structural diagram of an embodiment of a top block of the present invention;

FIG. 8a is a schematic view of an embodiment of the chuck of the present invention with the jaws thereof not extended;

FIG. 8b is a schematic view of an embodiment of the chuck of the present invention with the jaws extended;

fig. 9 is a schematic structural view of an embodiment of the fixing rod of the present invention.

Detailed Description

The principles and features of this invention are described below in conjunction with the following drawings, which are set forth by way of illustration only and are not intended to limit the scope of the invention. The invention is described in more detail in the following paragraphs by way of example with reference to the accompanying drawings. Advantages and features of the present invention will become apparent from the following description and from the claims. It is to be noted that the drawings are in a very simplified form and are not to precise scale, which is merely for the purpose of facilitating and distinctly claiming the embodiments of the present invention.

Referring to fig. 1-2, fig. 1 is an exploded view of an embodiment of a bearing dismounting device according to the present invention; fig. 2 is a schematic structural diagram of an embodiment of a bearing dismounting device provided by the invention. The bearing dismounting device comprises a rotating handle 1, an ejector rod 2, a cylinder 3, a tapered roller bearing 4, a supporting seat 5, an ejector block 6, a chuck 7 and a fixing rod 8, wherein a bearing 11 to be dismounted is fixedly arranged in an inner hole of a shell 10, and the shell 10 and the ejector rod 2 are respectively positioned on the left side and the right side of the supporting seat 5. A first threaded hole is formed in the supporting seat 5, first threads matched with the first threaded hole are formed in the outer side face of the ejector rod 2, and the ejector rod 2 can rotate in the first threaded hole of the supporting seat 5 to move leftwards and push forwards. The right-hand member of ejector pin 2 has seted up a hole, this hole and turning handle 1 phase-match, turning handle 1 passes this hole in order to control the rotation of ejector pin 2, the left end of ejector pin 2 is ejecting end, the terminal surface of ejecting end has seted up the second screw hole along the length direction of ejector pin 2, the second screw thread with second screw hole looks adaptation is seted up to the lateral surface of

cylinder

3, 3 threaded connection of cylinder are in ejector pin 2, cylinder 3 can pass the first screw hole of supporting seat 5 and expose in the left side of supporting seat 5. Preferably, two tapered roller bearings 4 are detachably mounted on the outer surface of the cylinder 3, the tapered roller bearings 4 are all sleeved on the cylinder 3 and attached to the left end of the push rod 2, and the two tapered roller bearings 4 are used for bearing the force borne by the cylinder 3 when the cylinder 3 rotates and advances along with the push rod 2 and keeping the stability of the axis of the cylinder 3. The kicking block 6 and the chuck 7 all are located the left side of supporting seat 5, and cylinder 3 passes first screw hole, tapered roller bearing 4, kicking block 6 and the chuck 7 of supporting seat 5 in proper order, and the inner circle and the outer lane of the bearing 11 that the chuck 7 simultaneously butt was waited to dismantle, and the left end butt of kicking block 6 is in the right-hand member of chuck 7, and the right-hand member butt supporting seat 5's of kicking block 6 left surface. Third screw thread has been seted up to the surface of dead lever 8, the left surface of the one end joint casing 10 of dead lever 8, the bar hole of seting up on the other end passes supporting seat 5, connecting piece 9 is with 8 fixed connection of dead lever in supporting seat 5, the preferred bolt of connecting piece 9, casing 10 is from this fixed with the relative supporting seat 5 of bearing 11 of treating the dismantlement, it needs to explain that, when 4 butt ejector pins 2's of tapered roller bearing, other end butt kicking block 6 or install in the inside of kicking block 6. The rotating handle 1 is rotated to drive the ejector rod 2 to push towards the bearing 11 to be disassembled leftwards in the first threaded hole of the supporting seat 5, and the push of the ejector rod 2 effectively pushes the cylinder 3, the ejector block 6 and the chuck 7 to move leftwards until the bearing 11 to be disassembled is ejected out of the inner hole of the shell 10.

In order to better explain the rotating handle 1, the ejector rod 2 and the cylinder 3, please continue to refer to fig. 3-5, the rotating handle 1 includes a cross bar, the cross bar is preferably a cylinder, one end of the ejector rod 2 is a column head 21, the column head 21 is penetrated with a hole, the hole penetrating the column head 21 is matched with the cross bar of the rotating handle 1, the left end of the ejector rod 2 is an ejector end, the ejector end forms a second threaded hole along the length direction thereof, the outer surface of the cylinder 3 is provided with a second thread matched with the second threaded hole of the ejector rod 2, the cylinder 3 is in threaded connection with the ejector rod 2, it needs to be explained that the left end of the cylinder 3 extends outwards to protrude a blocking block, the blocking block is annularly distributed on the outer surface of the cylinder 3, and the blocking block is used for abutting against the inner.

For a better illustration of the support base 5, the top block 6, the chuck 7 and the fixing rod 8, please continue to refer to fig. 6-9. The supporting seat 5 comprises a tray body 51, a connecting rod 52, a handle 53 and strip-shaped holes 54, the connecting rod 52 penetrates through the tray body 51 and is fixedly installed on the tray body 51, a first threaded hole is formed in the connecting rod 52 in a penetrating mode, the first threaded hole of the connecting rod 52 is matched with the first threads of the ejector rod 2, the handle 53 is fixedly connected to the periphery of the tray body 51, and the tray body 51 is uniformly provided with the strip-shaped holes 54; the top block 6 comprises two rings of different diameters: a first circular ring 61 and a second circular ring 62, the inner diameters of the first circular ring 61 and the second circular ring 62 are larger than the outer diameter of the cylinder 3 so as to facilitate the cylinder 3 to pass through simultaneously, the outer diameter of the first circular ring 61 is larger than the inner diameter of the ram 2 so as to facilitate the ram 2 to advance the ejector block 6 to move, and preferably, the inner diameter of the first circular ring 61 is larger than the outer diameter of the tapered roller bearing 4 so as to facilitate the tapered roller bearing 4 to be detachably mounted in the ejector block 6; the chuck 7 comprises a chuck body and a jaw 72, the chuck body is provided with an adjusting hole 71, the chuck 7 is preferably a three-jaw chuck, when a wrench is stretched into the adjusting hole 71 to rotate, the jaw 72 stretches out of the upper end surface of the chuck 7 and approaches to the middle position of the chuck 7, and the position of the jaw 72 is adjustable so as to adapt to bearings 11 to be disassembled with different sizes; the left end of dead lever 8 stretches out outwards and has joint portion 81, and the third screw thread has been seted up to the surface of dead lever 8, and joint portion 81 extends the arch along vertical direction and has the joint face.

During the concrete implementation,

cylinder

3 and 2 threaded connection of ejector pin, 2 and 5 threaded connection of supporting seat, 3 threaded connection of cylinder is in the second threaded hole of 2 left ends of ejector pin promptly, 2 threaded connection of ejector pin is in the first screw hole of supporting seat 5, cylinder 3 passes the first screw hole of supporting seat 5, the surface mounting of cylinder 3 has tapered roller bearing 4, cylinder 3 passes first ring 61 of kicking block 6 in proper order, second ring 62, chuck 7 and the bearing 11 of waiting to dismantle, tapered roller bearing 4 installs in first ring 61, first ring 61 butt supporting seat 5, second ring 62 butt chuck 7, when the jack catch stretches out in chuck 7, chuck 7 is provided with the one end of jack catch 72 then the inner circle and the outer lane of bearing 11 that the butt was waited to dismantle simultaneously. According to the size and the shape of casing 10, the number of adjustment dead lever 8, and pass bar hole 54 on the supporting seat 5 with dead lever 8, the left surface of overlap joint 81 joint casing 10, make dead lever 8 tentatively fixed with the position of supporting seat 5, rotatory ejector pin 2, ejector pin 2 removes towards the direction of casing 10 together with cylinder 3, the inner circle of waiting to dismantle bearing 11 of the whole butt casing 10 hole of stopper piece of cylinder 3 left end, it is fixed this moment to pass bar hole 54's dead lever 8 through connecting piece 9. After the bearing 11 to be disassembled is effectively fixed through the above operations, the handle 53 is held by hand to keep the whole support seat 5 still, the rotating handle 1 passes through the hole on the column head 21, the rotating handle 1 is rotated to make the ejector rod 2 spirally move left in the support seat 5 towards the bearing 11 to be disassembled, in the moving process of the ejector rod 2, the blocking block at the left end of the column body 3 continuously pushes against the inner ring of the bearing 11 to be disassembled, after the ejector rod 2 moves left and passes through the support seat 5, the ejector block 6 is continuously pushed to move left, the left movement of the ejector block 6 pushes the chuck 7 to move left, under the combined action of the blocking block at the left end of the column body 3 and the clamping jaws 72 of the chuck, the bearing 11 to be disassembled continuously moves left relative to the shell 10 and is pushed out until the bearing 11 to be disassembled is ejected out of the inner hole of the shell 10, that is. It should be noted that, in the bearing dismounting process, if the right end of the bearing 11 to be dismounted is exposed out of the inner hole of the housing 10, the claws 72 of the chuck 7 may also be adjusted to clamp and fix the outer ring of the bearing 11 to be dismounted, so as to ensure uniform stress on the bearing 11 to be dismounted in the process of pushing the bearing 11 to be dismounted, and when the bearing 11 to be dismounted is pushed into the inner hole of the housing 10, the claws 72 are adjusted to simultaneously abut against the inner ring and the outer ring of the bearing 11 to be dismounted, so as to eject the inner ring and the outer ring.

According to the bearing dismounting device provided by the invention, the fixed rod is clamped on the outer surface of the left side of the shell, the cylinder sequentially passes through the supporting seat, the top block and the chuck, the protruding blocking block at the left end of the cylinder abuts against the inner ring of the bearing to be dismounted, the clamping jaws of the chuck abut against the inner ring and the outer ring of the bearing simultaneously, one end of the top block is attached to the chuck, the other end of the top block abuts against the supporting seat, the fixed rod is fixed in the strip-shaped hole of the main disc through the connecting piece, the bearing to be dismounted in the inner hole of the shell and the shell is effectively fixed, the bearing to be dismounted is uniformly stressed, damage is avoided, in addition, the number and the positions of the fixed rods can be adjusted, the bearing dismounting device is suitable for shells with different sizes and different shapes, the clamping; the ejector rod is in threaded connection with the connecting rod, the cylinder body is in threaded connection with the connecting rod of the supporting seat, the rotary propulsion of the ejector rod drives the rotary propulsion of the cylinder body, the ejector block pushes the chuck to move leftwards under the propulsion of the ejector rod, the left movement of the chuck enables a bearing to be disassembled to be separated from an inner hole of the shell, so that the bearing is disassembled, the tapered roller bearing is detachably sleeved in the cylinder body and is installed in the ejector block, the force borne by the cylinder body is effectively borne, and the stability of the cylinder body in the moving process is ensured; the column cap of ejector pin one end is seted up porosely, and the turning handle passes this hole, rotates the turning handle so that the ejector pin is rotatory the propulsion to the left, and is easy and simple to handle and laborsaving.

The foregoing is only a preferred embodiment of the invention, and is not intended to limit the invention in any way; the present invention may be readily implemented by those of ordinary skill in the art as illustrated in the accompanying drawings and described above; however, those skilled in the art should appreciate that they can readily use the disclosed conception and specific embodiments as a basis for designing or modifying other structures for carrying out the same purposes of the present invention without departing from the scope of the invention as defined by the appended claims; meanwhile, any changes, modifications, and evolutions of the equivalent changes of the above embodiments according to the actual techniques of the present invention are still within the protection scope of the technical solution of the present invention.

Claims

1. The utility model provides a bearing dismounting device for will treat the bearing of dismantling and take out its characterized in that in the hole dismantlement of casing: the bearing dismounting device comprises a top rod, a cylinder, a supporting seat, a fixed rod, a top block and a chuck, wherein the shell and the top rod are respectively positioned at two sides of the supporting seat, a first threaded hole is formed in the supporting seat, first threads matched with the first threaded hole are formed in the outer side surface of the top rod, so that the top rod can rotate and push in the first threaded hole, the top rod is provided with a top-out end facing the bearing to be dismounted, a second threaded hole is formed in the end surface of the top-out end, and second threads matched with the second threaded hole are formed in the outer side surface of the cylinder; one end of the fixed rod is clamped with one side of the shell far away from the supporting seat, and the other end of the fixed rod is fixedly connected with the supporting seat; the kicking block with the equal detachably cover of chuck is located the cylinder, the chuck includes chuck body and jack catch, the chuck body is formed with the regulation hole, the jack catch set up in the one end of chuck body, work as the jack catch in when the chuck body stretches out, the chuck body is provided with the one end butt of jack catch treat the inner circle and the outer lane of the bearing of dismantling, the other end butt of chuck body the kicking block, the kicking block is kept away from the one end butt of chuck the ejecting end of ejector pin, the ejector pin in remove and promote in the first screw hole of supporting seat the kicking block with the chuck orientation the bearing of dismantling is removed.

2. The bearing removal apparatus of claim 1, wherein: the dead lever is close to the one end of casing is joint portion, the joint face joint of joint portion the casing is kept away from one side of supporting seat, the third screw thread has been seted up to the lateral surface of dead lever, supporting seat evenly distributed with the bar hole of dead lever looks adaptation, the dead lever pass the bar hole and through the connecting piece with supporting seat fixed connection.

3. The bearing removal apparatus of claim 1, wherein: the kicking block includes the ring that two diameters are different, the chuck is kept away from the one end detachably cover of casing is located the ring of kicking block one end, the ring butt of the kicking block other end the member.

4. The bearing removal apparatus of claim 1, wherein: the supporting seat comprises a tray body, a connecting rod and a handle, the connecting rod forms the first threaded hole along the length direction of the connecting rod, the connecting rod penetrates through the tray body and is fixed on the tray body, and the handle is fixedly arranged on the periphery of the tray body.

5. The bearing removal apparatus of claim 1, wherein: the bearing disassembly tool is characterized by further comprising a turning handle, one end, far away from the bearing to be disassembled, of the ejector rod is a column head, a hole matched with the turning handle is formed in the column head, and the turning handle penetrates through the hole in the column head to control the ejector rod to rotate.

6. The bearing removal apparatus of claim 1, wherein: the cylinder is close to the one end of treating the bearing of dismantling extends the arch outwards and has the stopper, the stopper butt treat the inner circle of the bearing of dismantling.

7. A bearing dismounting device according to claim 3, characterized in that: the cylinder is detachably sleeved with the tapered roller bearing, one end of the tapered roller bearing is attached to one end of the ejector rod, which is close to the bearing to be detached, and the other end of the tapered roller bearing is abutted to the ejector block or is installed in a circular ring, which is close to one end of the supporting seat, of the ejector block.