CN218254956U

CN218254956U - Tool for disassembling shaft and bearing

Info

Publication number: CN218254956U
Application number: CN202222186803.3U
Authority: CN
Inventors: 徐利君
Original assignee: Ningbo Yiming Bearing Co ltd
Current assignee: Ningbo Yiming Bearing Co ltd
Priority date: 2022-08-18
Filing date: 2022-08-18
Publication date: 2023-01-10
Anticipated expiration: 2032-08-18

Abstract

The utility model discloses an instrument of split axle and bearing, including chuck and ejector pin, still including two at least fixture blocks, be equipped with on the chuck with each fixture block assorted slide rail, the fixture block is including ability along radial inside and outside gliding fixture block body, this fixture block body downwardly extending take shape on the slide rail has the clamping part, fixture block body up end be equipped with can and correspond the slide rail inlays the spout of joining in marriage each other, still is provided with between chuck and each fixture block and drives the inside and outside gliding drive arrangement of fixture block. Compared with the prior art, the utility model has the advantages of: through setting up a plurality of fixture blocks on the chuck, directly snatch the bearing with the clamping part that is located the fixture block lower extreme to slide inside and outside the realization size adjustable along the slide rail through drive arrangement drive fixture block, still be equipped with the first screw hole that can threaded connection ejector pin at the chuck center, when making it dismantle the bearing smoothly, still compromise the scope size that can conveniently adjust removable bearing, make its bearing dismantlement that can be applicable to more specifications.

Description

Tool for disassembling shaft and bearing

Technical Field

The utility model relates to a technical field of instrument, concretely relates to instrument for splitting axle and bearing.

Background

The bearing is an important part in the modern mechanical equipment. Its main function is the support machinery rotator, reduces the coefficient of friction of its motion in-process to guarantee its gyration precision, long-term rotation in-process, can damage because of wearing and tearing, need change the bearing this moment, because the installation of bearing all is interference fit usually, so maintenance personal is when changing the bearing, hardly takes out it. The traditional bearing disassembly is mainly divided into two types: one method is that the bearing is disassembled by directly knocking a copper bar, the bearing is knocked out by brute force, and a rotating shaft or a mounting hole is easily damaged in the knocking process; the other type is that the three-jaw puller is a tool which is often used for disassembling the bearing, the tool mainly comprises a rotating handle, a screw rod and a pulling jaw, and is of two-jaw and three-jaw types, and the main sizes are the length of the pulling jaw, the distance between the pulling jaws, the length of a screw rod and the like so as to adapt to bearings with different diameters and different axial installation depths. When the bearing dismounting tool is used, the screw rod tip is positioned in the shaft end tip hole, the position of the pull claw is adjusted to enable the pull claw to be hung on the outer ring of the bearing, and the rotating handle is rotated to enable the pull claw to drive the bearing to move outwards along the axial direction for dismounting. When the puller encounters a large bearing, the clamping jaw is difficult to clamp the bearing stably, the bearing slides out easily, the claw is broken easily, and when the puller encounters a small bearing, the claw cannot touch the outer ring of the bearing, so that the application range has certain limitation, and further improvement is needed.

SUMMERY OF THE UTILITY MODEL

The utility model aims to solve the technical problem that a scope size adjustable and adjust convenient instrument of split axle and bearing of dismantling the bearing is provided to above-mentioned technical current situation.

The utility model provides a technical scheme that above-mentioned technical problem adopted does: this instrument of split axle and bearing, including the chuck, the chuck center runs through and is equipped with first screw hole, first screw hole threaded connection has ejector pin, its characterized in that: still including at least two along circumference interval and be radial arrangement in the fixture block of terminal surface under the chuck, be equipped with on the chuck with each fixture block assorted radial extension's slide rail, the fixture block is including ability along the gliding fixture block body of radial inside and outside, the clamping part that can be used for snatching the bearing of this fixture block body downwardly extending take shape on the slide rail, fixture block body up end be equipped with can with correspond the slide rail inlays the spout of joining in marriage each other, chuck and each still be provided with between the fixture block and drive the gliding drive arrangement inside and outside the fixture block.

In order to conveniently drive the clamping block to slide on the sliding rail radially inward and outward, preferably, the driving device includes an adjusting wheel rotatably disposed at the center of the chuck, a second threaded hole radially disposed on the clamping block, and a screw rod capable of being in threaded fit with the second threaded hole, a first bevel gear is disposed at the top of the adjusting wheel, a second bevel gear in meshing transmission with the first bevel gear is disposed at one end of the screw rod close to the center of the chuck, an accommodating cavity capable of accommodating the first bevel gear and the second bevel gear is further disposed on the chuck, and a through hole through which the ejector rod can pass is disposed at the axis of the adjusting wheel in a penetrating manner.

In order to facilitate the assembly of chuck manufacturing and each part, and also for the convenience of disassembly, further, the chuck include first chuck and second chuck, the second chuck can be located with dismantling on the lower terminal surface of first chuck, aforementioned regulating wheel rotates and locates the center department of second chuck, aforementioned first screw hole is located the center of first chuck, each the slide rail is located under the first chuck on the terminal surface and be located respectively the periphery side of second chuck, hold the chamber and locate between first chuck and the second chuck.

In order to make the sliding of the clamping block on the sliding rail more stable and smooth, the center of the second chuck is provided with a bearing, the adjusting wheel is arranged on the bearing, and the adjusting wheel is rotatably arranged on the second chuck.

In order to enable the fixture block to be locked on the chuck at any time, preferably, a third threaded hole is formed in the first chuck, the third threaded hole penetrates through the sliding rail and then is communicated with the sliding groove, a fastener is in threaded connection with the third threaded hole and then can abut against the fixture block, and after the position of the fixture block is adjusted according to actual needs, the fastener is screwed down to abut against the fixture block, so that the fixture block is fixed on the chuck.

In order to conveniently grab the end face of the bearing, the clamping part comprises a connecting rod and a clamping jaw, the connecting rod vertically extends downwards from the lower end of the fixture block body, the clamping jaw is arranged at the lower end of the connecting rod and horizontally extends towards the center direction of the chuck, and the connecting rod and the clamping jaw are designed in an L shape.

In order to enable the chuck to bear larger stress when grabbing the bearing, the upper end surface of the chuck is further provided with a reinforcing rib which is correspondingly arranged above the sliding rail.

In order to drive the adjusting wheel conveniently, a knob exposed out of the chuck is further arranged at the lower end of the adjusting wheel.

Furthermore, a plurality of mounting holes into which the operating rods can be inserted are formed in the peripheral surface of the knob, and the knob can be driven to rotate by inserting one operating rod on occasions where the knob cannot be touched by hands.

In order to conveniently drive the ejector rod to rotate, a handle capable of driving the ejector rod to rotate is further arranged on the ejector rod.

Compared with the prior art, the utility model has the advantages of: through setting up a plurality of fixture blocks on the chuck, directly snatch the bearing with the clamping part that is located the fixture block lower extreme to slide inside and outside the realization size adjustable along the slide rail through drive arrangement drive fixture block, still be equipped with the first screw hole that can threaded connection ejector pin at the chuck center, when making it dismantle the bearing smoothly, still compromise the scope size that can conveniently adjust removable bearing, make its bearing dismantlement that can be applicable to more specifications.

Drawings

Fig. 1 is a schematic structural view of a perspective view of an embodiment of the present invention;

FIG. 2 is a schematic perspective view of the other corner of FIG. 1;

FIG. 3 is an exploded view of the perspective structure of FIG. 1;

FIG. 4 is a cross-sectional view of FIG. 1;

fig. 5 is a schematic structural view of the embodiment of the present invention for grabbing a small-diameter bearing;

fig. 6 is the embodiment of the present invention, which schematically illustrates the structure of grabbing a large-diameter bearing.

Detailed Description

The present invention will be described in further detail with reference to the following embodiments.

As shown in fig. 1 to 6, the present invention is an embodiment.

As shown in fig. 1 to 3, the tool for detaching a shaft and a bearing in the present embodiment mainly includes a chuck 1, a fixture block 2, a driving device, a ram 3, and the like.

In this embodiment, the chuck 1 includes a first chuck 14 and a second chuck 15, wherein the first chuck 14 includes a body and a plurality of radial arms extending radially outward from a circumferential surface of the body, and the number of the radial arms matches with the number of the fixture blocks 2 described below, and the number of the radial arms is three in the drawing. The second chuck 15 can be detachably arranged on the lower end face of the first chuck 14 through screw connection, three slide rails 11 matched with the 3 fixture blocks 2 are further respectively arranged on the lower surface of the radial arm of the first chuck 14, and the three slide rails 11 are respectively distributed on the outer peripheral side of the second chuck 15 in a radial mode at intervals along the circumferential direction. The center of the first chuck 14 is also provided with a first threaded hole 12 in a penetrating manner, the mandril 3 is connected in the first threaded hole 12 in a threaded manner, and the upper end of the mandril 3 is also provided with a handle 31 capable of driving the mandril 3 to rotate.

Fixture block 2 includes fixture block body 21 and clamping part 22, fixture block body 21 can be on slide rail 11 along radially inside and outside slip, clamping part 22 is formed by the lower extreme downwardly extending of this fixture block body 21, this clamping part 22 mainly used snatchs the bearing, in this embodiment, clamping part 22 includes connecting rod 221 from the vertical downwardly extending of fixture block body 21 lower extreme face and locate connecting rod 221 lower extreme and level to the jack catch 222 that chuck 1 central direction extended, for conveniently snatching, connecting rod 221 is the design of L type with jack catch 222, the terminal surface of the bearing that needs the split can better be snatched to the clamping part 22 of L type design. The upper end surface of each fixture block body 21 is provided with a sliding groove 211 capable of being mutually embedded with the corresponding three sliding rails 11, and the three fixture block bodies 21 can respectively slide inwards and outwards along the radial direction on the corresponding sliding rails 11 to drive the three fixture blocks 2 to move. Of course, if the manufacturing process and assembly allow, the first chuck 14 and the second chuck 15 can be integrally formed, and the cartridge 2 is not limited to only three cartridges, and more cartridges can be provided as required.

Referring to fig. 3 and 4, the driving device is disposed between the chuck 1 and the three fixture blocks 2, the driving device includes an adjusting wheel 4 rotatably disposed at the center of the chuck 1, a second threaded hole 23 radially disposed on the fixture block 2, and a screw 5 capable of being in threaded fit with the second threaded hole 23, a first bevel gear 41 is disposed at the top of the adjusting wheel 4, a second bevel gear 51 in meshing transmission with the first bevel gear 41 is disposed at one end of the screw 5 close to the center of the chuck 1, an accommodating cavity 13 capable of accommodating the first bevel gear 41 and the second bevel gear 51 is further disposed between the first chuck 14 and the second chuck 15, in order to enable the ejector rod 3 to smoothly pass through the adjusting wheel 4 also located at the center of the chuck, a through hole 42 through which the ejector rod 3 can pass is disposed at the axis of the adjusting wheel 4.

Referring to fig. 4, a bearing 6 is further provided between the second chuck 15 and the adjustment wheel 4, the bearing 6 is installed at the center of the second chuck 15, and the adjustment wheel 4 is inserted into the bearing 6 such that the adjustment wheel 4 is rotatably provided on the second chuck 15.

The first chuck 14 is further provided with a third threaded hole 141, the third threaded hole 141 penetrates through the slide rail 11 and then is communicated with the slide groove 21, and a fastening member 142 is provided, and the fastening member 142 is screwed and penetrates through the third threaded hole 141 and then abuts against the fixture block 2. The upper end surface of the chuck 1 is also provided with a reinforcing rib 16, and the reinforcing rib 16 is correspondingly arranged above the slide rail 11. In addition, in order to enable an operator to know the moving position of the fixture block 2 clearly at any time, a scale 17 is further disposed on a side surface of the radial arm of the first chuck 14 adjacent to the slide rail 11, and a mark 24 corresponding to the scale 17 is disposed on the fixture block 2.

Referring to fig. 6, the lower end of the adjusting wheel 4 is further provided with a knob 43 exposed out of the second chuck 15, and the outer circumferential surface of the knob 43 is provided with a mounting hole 44 for inserting the operating rod C, so as to facilitate the rotation of the knob 43 and the adjusting wheel 4.

The tool for disassembling the shaft and the bearing has the following working principle: when a small-diameter bearing needs to be disassembled, as shown in fig. 5, the knob 43 is firstly actuated to drive the adjusting wheel 4 to rotate, so that the first bevel gear 41 drives the second bevel gear 51 to rotate and further drive the fixture block 2 to radially move inwards along the slide rail 11 towards the center of the chuck 1, the distance between the 3 fixture blocks is reduced, the size adjustment is completed, then the clamping part 22 of the fixture block 2 grabs the lower end surface of the outer ring of the small bearing a, the lower end of the ejector rod 3 props against the shaft end of a shaft installed in the small bearing a, then the fastener 142 is screwed, so that the fixture block 2 is fixed on the chuck 1, the handle 31 is rotated, under the action of the internal and external threads, the chuck 1 is driven to ascend relative to the ejector rod 3, so that the fixture block 2 is driven to ascend, and finally the disassembling work is completed; when the bearing with a large diameter is needed to be disassembled, similarly, as shown in fig. 6, the knob 43 is actuated to expand the space between the 3 fixture blocks 2, and then the handle 31 of the ejector rod 3 is driven to rotate to complete the disassembling operation of the large bearing B. When the knob 43 needs to be controlled to adjust the size in the detaching process, and the knob 43 cannot be touched by hand, as shown in fig. 6, the operating rod C can be inserted into the mounting hole 44 on the outer side surface of the knob 43, and the knob 43 can be easily driven to rotate by pulling the operating rod C, so that the adjusting work is completed.

Claims

1. The utility model provides a split axle and instrument of bearing, including chuck (1), chuck (1) center is run through and is equipped with first screw hole (12), first screw hole (12) threaded connection has ejector pin (3), its characterized in that: still including at least two along circumference interval and be radial arrangement in fixture block (2) of terminal surface under chuck (1), be equipped with on chuck (1) with each fixture block (2) assorted radial extension's slide rail (11), fixture block (2) including can be on slide rail (11) along radial inside and outside gliding fixture block body (21), this fixture block body (21) downwardly extending take shape can be used for snatching clamping part (22) of bearing, fixture block body (21) up end be equipped with can with correspond slide rail (11) each other inlay spout (211) of joining in marriage, chuck (1) and each still be provided with between fixture block (2) and drive fixture block (2) inside and outside gliding drive arrangement.

2. The tool for splitting a shaft and bearing according to claim 1, wherein: the driving device comprises an adjusting wheel (4) which can be rotatably arranged at the center of the chuck (1), a second threaded hole (23) which is radially arranged on the chuck (2) and a screw (5) which can be in threaded fit with the second threaded hole (23), wherein a first bevel gear (41) is arranged at the top of the adjusting wheel (4), a second bevel gear (51) which is in meshing transmission with the first bevel gear (41) is arranged at one end, close to the center of the chuck (1), of the screw (5), a containing cavity (13) which can contain the first bevel gear (41) and the second bevel gear (51) is further arranged on the chuck (1), and a through hole (42) through which the ejector rod (3) can penetrate is arranged at the axis of the adjusting wheel (4) in a penetrating manner.

3. The tool for splitting a shaft and a bearing according to claim 2, wherein: chuck (1) include first chuck (14) and second chuck (15), second chuck (15) can be located with dismantling on the lower terminal surface of first chuck (14), aforementioned regulating wheel (4) are rotated and are located the center department of second chuck (15), aforementioned first screw hole (12) are located the center of first chuck (14), each slide rail (11) are located on the terminal surface under first chuck (14) and be located respectively the periphery side of second chuck (15), hold chamber (13) and locate between first chuck (14) and second chuck (15).

4. A tool for disassembling a shaft and a bearing according to claim 3, wherein: second chuck (15) center department be equipped with bearing (6), regulating wheel (4) are located on bearing (6), and then make regulating wheel (4) rotate to be located on second chuck (15).

5. A tool for disassembling a shaft and a bearing according to claim 3, wherein: the first chuck (14) is provided with a third threaded hole (141), the third threaded hole (141) penetrates through the sliding rail (11) and then is communicated with the sliding groove (211), and a fastening piece (142) is in threaded connection with the third threaded hole (141) and then can abut against the clamping block (2).

6. A tool for disassembling a shaft and a bearing according to claim 1, wherein: clamping part (22) including fixture block body (21) lower extreme vertical downwardly extending's connecting rod (221) and locate connecting rod (221) lower extreme and level to jack catch (222) that chuck (1) central direction extends, connecting rod (221) with jack catch (222) are the design of L type.

7. The tool for splitting a shaft and bearing according to claim 1, wherein: the chuck (1) up end still be equipped with strengthening rib (16), strengthening rib (16) are located correspondingly the top of slide rail (11).

8. The tool for splitting a shaft and a bearing according to claim 2, wherein: the lower end of the adjusting wheel (4) is also provided with a knob (43) exposed out of the chuck (1).

9. The tool for splitting a shaft and bearing according to claim 8, wherein: the outer peripheral surface of the knob (43) is provided with a plurality of mounting holes (44) into which the operating rod (C) can be inserted.

10. The tool for splitting a shaft and bearing according to claim 1, wherein: the ejector rod (3) is provided with a handle (31) which can drive the ejector rod (3) to rotate.