CN219925958U - Shaft disassembly device - Google Patents

Abstract

The utility model provides a shaft body dismounting device which is used for dismounting a shaft body inserted on a shaft body matching piece, and comprises a holding piece, a fastening piece and a propping piece, wherein the fastening piece is arranged on the holding piece, and the holding piece can hold the shaft body through the fastening piece; the jacking piece is in threaded connection with the enclasping piece, one end of the jacking piece is used for jacking the shaft body matching piece, and the jacking piece rotates relative to the enclasping piece, so that the enclasping piece can drive the enclasping shaft body to be separated from the shaft body matching piece along the axial direction of the shaft body. The shaft dismounting device is used for dismounting the shaft from the shaft matching piece, and compared with the existing knocking dismounting mode, the shaft dismounting device can not damage the shaft and the shaft matching piece, and the shaft matching piece can not deform, so that the self quality and the assembly quality of the shaft and the shaft matching piece are guaranteed.

Description

Shaft body dismounting device

Technical Field

The utility model relates to the technical field of disassembly of automobile parts, in particular to a device for disassembling a shaft body.

Background

The drive shaft of a motor vehicle is a shaft of a universal transmission device which can transmit torque, is a shaft for transmitting the rotation of a speed changer to a main speed reducer, and is a rotating body with high rotating speed and few bearings, so that the dynamic balance of the drive shaft is important. For the motorcycle type that the angle is big is arranged to the transmission shaft, in order to satisfy the intensity requirement, select for use the constant speed transmission shaft more, constant speed transmission shaft and main reducer are mainly through bolted connection, in order to cooperate the fixed of transmission shaft and installation, all be equipped with the tang at main reducer flange outer end, transmission shaft outer star gear cartridge is to the tang position of main reducer flange.

Generally, the size of the main speed reducer flange spigot is determined according to the size of the transmission shaft outer star wheel spigot, the matching length of the main speed reducer flange and the transmission shaft spigot is 2-5 mm, the main speed reducer flange and the transmission shaft outer star wheel are matched in a small clearance fit, the matching grade is generally H7/H7, the positioning of the transmission shaft can be ensured, and in order to facilitate the installation, the matching size is required to be as small as possible.

Because the cooperation of flange and transmission shaft is little clearance fit, in order to avoid the installation difficulty, two part tang does not normally do surface treatment, but along with the use of vehicle, the condition of corrosion can appear in the machine face, and the longer the time, the more serious the corrosion, the fit clearance can be filled to the rust, leads to the transmission shaft to dismantle the difficulty.

The traditional transmission shaft is generally disassembled by knocking the outer surface of the flange of the main speed reducer or the outer star wheel of the transmission shaft by utilizing tools such as copper bars, rubber hammers and the like. The disassembly mode can damage the outer surfaces of the main reducer flange and the transmission shaft when knocking, parts deform, the quality of the two parts is affected, the assembly quality of the assembly is also affected, the dynamic balance is reduced, noise vibration and other NVH problems are easily caused, and customer complaints are caused.

Disclosure of Invention

In view of the foregoing, the present utility model is directed to a device for disassembling a shaft body, which is not easy to damage the shaft body and the shaft body matching piece when the shaft body is disassembled.

In order to achieve the above purpose, the technical scheme of the utility model is realized as follows:

the device for disassembling the shaft body is used for disassembling the shaft body inserted on the shaft body matching piece and comprises a holding piece, a fastening piece and a pushing piece;

the fastening piece is arranged on the enclasping piece, and the enclasping piece can enclasp the shaft body through the fastening piece;

the jacking piece is in threaded connection with the enclasping piece, one end of the jacking piece is used for jacking the shaft body matching piece, and the jacking piece rotates relative to the enclasping piece, so that the enclasping piece can drive the enclasping shaft body to be separated from the shaft body matching piece along the axial direction of the shaft body.

Further, the enclasping piece comprises a first half ring and a second half ring; the first semi-ring and the second semi-ring are connected through the fastener and are combined to form a ring so as to hold the shaft body tightly.

Further, one ends of the first semi-ring and the second semi-ring are connected in a pin joint mode, and the other ends of the first semi-ring and the second semi-ring are connected through the fastening piece.

Further, the fastener includes a bolt for connecting the first half and the second half.

Further, threaded holes are formed in the first semi-ring and the second semi-ring, and the jacking piece is screwed into each threaded hole.

Further, the threaded holes on the first semi-ring and the second semi-ring are distributed at intervals in the circumferential direction of the shaft body; one end, far away from the shaft body matching piece, of the center line of each threaded hole to one end, close to the shaft body matching piece, of each threaded hole is inclined towards the center line of the shaft body.

Further, the first semi-ring and the second semi-ring are provided with anti-slip parts; the first semi-ring and the second semi-ring are respectively held tightly by the self anti-slip parts so as to prevent the first semi-ring and the second semi-ring from sliding relative to the shaft body along the axial direction of the shaft body.

Further, the anti-skid part is an anti-skid protrusion arranged on the first semi-ring or the second semi-ring; the anti-slip protrusions protrude towards the shaft body so as to tightly prop against the shaft body.

Further, a plurality of anti-slip protrusions are arranged on the first semi-ring and the second semi-ring; each anti-slip protrusion extends around the circumference of the shaft body and is in a strip shape, and a plurality of anti-slip protrusions on the first semi-ring and the second semi-ring are arranged at intervals along the axial direction of the shaft body.

Further, one end of the shaft body matching piece is propped against the propping piece, and a tool matching part is arranged at the other end of the propping piece; the tool matching part is used for matching with an external tool, so that the propping piece rotates around the axial center line of the propping piece relative to the enclasping piece.

Compared with the prior art, the utility model has the following advantages:

the shaft dismounting device is used for dismounting the shaft from the shaft matching piece, and compared with the existing knocking dismounting mode, the shaft dismounting device can not damage the shaft and the shaft matching piece, and the shaft matching piece can not deform, so that the self quality and the assembly quality of the shaft and the shaft matching piece are guaranteed.

In addition, the enclasping piece comprises a first semi-ring and a second semi-ring, which is favorable for firmly enclasping the shaft body. One ends of the first semi-ring and the second semi-ring are pivoted and connected, so that the mounting process of the enclasping piece enclasping shaft body is convenient. The fastener adopts a bolt, is a more common standard component, and has lower cost. Screw holes are formed in the first semi-ring and the second semi-ring and are in threaded connection with the propping piece, so that the dismounting force can be uniformly applied to the circumference of the shaft body. One end, far away from the shaft body matching piece, of the center line of the threaded hole inclines towards the center line of the shaft body from one end, close to the shaft body matching piece, of the center line of the threaded hole, so that the shaft body matching piece can be conveniently jacked.

In addition, the anti-slip part is beneficial to increasing the sliding resistance of the holding piece relative to the shaft body and is beneficial to smoothly disassembling the shaft body. The anti-slip part is arranged to be an anti-slip protrusion, so that the anti-slip device is simple in structure and beneficial to better increasing the friction resistance between the holding piece and the shaft body. Each anti-slip protrusion extends around the circumference of the shaft body and is in a strip shape, and the anti-slip protrusions on the first semi-ring and the second semi-ring are distributed at intervals along the axial direction of the shaft body, so that the sliding resistance of the holding piece relative to the shaft body is further increased.

Simultaneously, the instrument cooperation portion that sets up does benefit to with outside instrument cooperation, is convenient for screw tight spare in top, and can improve the convenience of axis body dismouting.

Drawings

The accompanying drawings, which are included to provide a further understanding of the utility model and are incorporated in and constitute a part of this specification, illustrate embodiments of the utility model and together with the description serve to explain the utility model. In the drawings:

fig. 1 is a schematic structural diagram of a device for disassembling a shaft body in an application state according to an embodiment of the present utility model;

FIG. 2 is a schematic structural view of a device for disassembling a shaft according to an embodiment of the present utility model;

fig. 3 is a cross-sectional view taken along the direction A-A in fig. 2.

Reference numerals illustrate:

1. a shaft body; 2. a shaft body fitting; 3. a clasping member; 4. a fastener; 5. a tightening member; 6. a connecting piece;

301. a first half ring; 3011. a first connection hole; 3012. a first outer flange; 302. a second half ring; 3021. a second connection hole; 3022. a second outer convex portion; 30221. opening holes; 303. a threaded hole; 304. an anti-slip part;

501. a tool mating part.

Detailed Description

It should be noted that, without conflict, the embodiments of the present utility model and features of the embodiments may be combined with each other.

In the description of the present utility model, it should be noted that the azimuth or positional relationship indicated by the terms "upper", "lower", "inner", "back", etc. are based on the azimuth or positional relationship shown in the drawings, and are merely for convenience of describing the present utility model and simplifying the description, and do not indicate or imply that the apparatus or element referred to must have a specific azimuth, be constructed and operated in a specific azimuth, and thus should not be construed as limiting the present utility model. Furthermore, the terms "first," "second," and the like, are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.

In addition, in the description of the present utility model, the terms "mounted," "connected," and "connecting" are to be construed broadly, unless otherwise specifically defined. For example, the connection can be fixed connection, detachable connection or integrated connection; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communication between two elements. The specific meaning of the above terms in the present utility model can be understood by those of ordinary skill in the art in combination with specific cases.

The utility model will be described in detail below with reference to the drawings in connection with embodiments.

The embodiment relates to a device for disassembling a shaft body, which is used for disassembling the shaft body 1 inserted on a shaft body matching piece 2, and the shaft body 1 and the shaft body matching piece 2 are not easy to damage in the disassembling process, so that the quality of the shaft body and the shaft body matching piece and the assembling quality after reassembling are guaranteed.

Based on the above design concept, an exemplary structure of the shaft body dismounting device according to the present embodiment in an application state is shown in fig. 1, and in order to better understand the shaft body dismounting device according to the present embodiment, an example will be described below in which the shaft body 1 is a transmission shaft of an automobile and the shaft body mating member 2 is a main reducer flange. It will be appreciated that the device may be used to disassemble other plug-in connected shaft bodies 1 and shaft body fittings 2, in addition to the device being used to disassemble a vehicle drive shaft that is plugged onto a final drive flange.

An exemplary structure of the device for disassembling a shaft body of the embodiment is shown in fig. 2, and the device mainly comprises a clasping member 3, a fastening member 4 and a propping member 5, wherein the fastening member 4 is arranged on the clasping member 3, and the clasping member 3 can clasp the shaft body 1 through the fastening member 4; the jacking piece 5 is in threaded connection with the enclasping piece 3, one end of the jacking piece 5 is used for jacking the shaft body matching piece 2, the jacking piece 5 rotates relative to the enclasping piece 3, and the enclasping piece 3 can drive the enclasping shaft body 1 to separate from the shaft body matching piece 2 along the axial direction of the shaft body 1.

As a preferred embodiment, still referring to fig. 2, the hug 3 includes a first half ring 301 and a second half ring 302, the first half ring 301 and the second half ring 302 are connected by a fastener 4, and the first half ring 301 and the second half ring 302 are combined in a ring shape to hug the shaft body 1. Here, the clasping member 3 includes a first half ring 301 and a second half ring 302, which is beneficial to firmly clasping the shaft body 1.

In a preferred embodiment, the first half 301 and the second half 302 are pivotally connected at one end and connected at the other end by a fastener 4. In this structure, one ends of the first half ring 301 and the second half ring 302 are pivotally connected, so that the mounting process of the clasping member 3 clasping the shaft body 1 is convenient.

In a specific structure, a slot is formed at one end of the first half ring 301 pivotally connected to the second half ring 302, and one end of the second half ring 302 pivotally connected to the first half ring 301 is thinned to facilitate insertion into the slot of the first half ring 301. The first connecting holes 3011 are formed on two sides of the slot of the first half ring 301, the second connecting holes 3021 are formed in the thickness-reduced area of the second half ring 302, and the connecting pieces 6, such as rivets, are simultaneously inserted into the two first connecting holes 3011 and the second connecting holes 3021, so that one ends of the first half ring 301 and the second half ring 302 are pivotally connected.

For the pin joint continuous one end of first semi-ring 301 and second semi-ring 302, the other end of first semi-ring 301 is equipped with first outer protruding portion 3012, and the other end of second semi-ring 302 is equipped with second outer protruding portion 3022, all is equipped with trompil 30221 on first outer protruding portion 3012 and the second outer protruding portion 3022, and fastener 4 includes the bolt that is used for connecting first semi-ring 301 and second semi-ring 302, still can include the nut that links to each other with the bolt spiro union, and the bolt passes the trompil 30221 on first outer protruding portion 3012 and the second outer protruding portion 3022 to link to each other with the nut spiro union, can make the hug tight shaft body 1 of hugging member 3 fastening.

It should be understood herein that the fastener 4 may not include a nut, for example, one of the openings 30221 in the first and second outer projections 3012, 3022 may be internally threaded, or both openings 30221 may be internally threaded, in which case a nut may not be required. In addition, the diameter of the circular hole formed by encircling the first half ring 301 and the second half ring 302 is equal to or slightly smaller than that of the transmission shaft so as to tightly hold the transmission shaft.

In addition, in the hug member 3 of the present embodiment, the first half ring 301 and the second half ring 302 may be formed into a circular shape, or the first half ring 301 and the second half ring 302 may be formed into an arc shape of 180 degrees or the hug member 3 may include only the first half ring 301 or the second half ring 302, the fastening member 4 may be a bolt screwed to the fastening member 4, the axial direction of the bolt may be orthogonal to the center line of the shaft body 1, and the intersection may be optimal, or the hug member 3 may be tightened by screwing the bolt.

As a preferred embodiment, the first half ring 301 and the second half ring 302 are provided with threaded holes 303, and each threaded hole 303 is screwed with the tightening member 5. In addition, the threaded holes 303 on the first half ring 301 and the second half ring 302 are distributed at intervals in the circumferential direction of the shaft body 1, so that the tightening piece 5 can uniformly apply the disassembling force in the circumferential direction of the shaft body 1. As shown in fig. 2 in this embodiment, one threaded hole 303 is formed on the first half ring 301, and two threaded holes 303 are formed on the second half ring 302, so that the tightening member 5 can uniformly apply the disassembling force at three positions in the circumferential direction of the shaft body 1, and other numbers of threaded holes 303 on the first half ring 301 and the second half ring 302 can be used.

In a preferred embodiment, the center line of each threaded hole 303 is inclined toward the center line of the shaft 1 from the end far from the shaft mating member 2 to the end near the shaft mating member 2, so as to facilitate the pressing of the shaft mating member 2. In this embodiment, the outer end of the main reducer flange is only 4-5mm larger than the diameter of the profile wheel of the transmission shaft, and if the threaded hole 303 is a common straight hole, the clearance requirement cannot be met at all, and the tightening member 5 cannot touch the main reducer flange when passing through, so that the inclined hole structure is adopted, so that the main reducer flange can be well tightened.

It should be noted that the diameter of the threaded hole 303 is preferably consistent with the diameter of the mounting hole of the transmission shaft, so that the mounting bolt of the transmission shaft can be directly used for dismounting, other bolts are not needed, time is saved, convenience and convenience are achieved, and the cost of the device is reduced.

As a preferred embodiment, the first half ring 301 and the second half ring 302 are provided with anti-slip portions 304, and the first half ring 301 and the second half ring 302 respectively clamp the shaft body 1 through their own anti-slip portions 304, so as to prevent the first half ring 301 and the second half ring 302 from sliding relative to the shaft body 1 along the axial direction of the shaft body 1 during the disassembly process. Here, the anti-slip portion 304 is provided to facilitate the increase of the sliding resistance of the clasping member 3 with respect to the shaft body 1, and to facilitate the smooth detachment of the shaft body 1.

In a preferred embodiment, as shown in fig. 2 and 3, the anti-slip portion 304 is a protrusion, and the first half ring 301 and the second half ring 302 are provided with protrusions, and the protrusions on the first half ring 301 and the second half ring 302 protrude toward the shaft body 1, so as to facilitate firmly pressing the shaft body 1. In this configuration. The anti-skid part 304 is an anti-skid bulge, has a simple structure, and is beneficial to better increasing the friction resistance between the enclasping piece 3 and the shaft body 1. In addition, of course, cleats may be provided on only one of the first half ring 301 and the second half ring 302.

With continued reference to fig. 2 and 3, the first half ring 301 and the second half ring 302 are provided with a plurality of anti-slip protrusions, each anti-slip protrusion extends around the circumference of the shaft body 1 and is in a strip shape, and the plurality of anti-slip protrusions on the first half ring 301 and the second half ring 302 are arranged at intervals along the axial direction of the shaft body 1, so that the sliding resistance of the clasping member 3 relative to the shaft body 1 is further increased. As in the present embodiment, two cleats are disposed on the first half ring 301 and the second half ring 302, and the two cleats on the first half ring 301 and the two cleats on the second half ring 302 are arranged at intervals along the axial direction of the shaft body 1, but the number of cleats on the first half ring 301 and the second half ring 302 may be other, for example, 1, 3, etc.

As a preferred embodiment, still referring to fig. 1, the other end of the puller 5 is provided with a tool engagement portion 501 with respect to one end of the puller shaft body engagement member 2 of the puller 5. The tool engagement portion 501 is provided for engagement with an external tool, so that the clamping element 5 is rotated about its axial center line relative to the clamping element 3, i.e. about the axial center line of a threaded bore into which the clamping element 5 is screwed.

As in the present embodiment, the fastener 4 is preferably a bolt, which is a relatively common standard component and is relatively inexpensive. The tool matching portion 501 is a groove formed at the end of the bolt, which is beneficial to matching with an external tool such as a wrench, so as to facilitate screwing the unscrewing and pushing piece 5, and improve the convenience of disassembling the shaft body 1.

When the device is used, the first semi-ring 301 and the second semi-ring 302 can rotate around the connecting piece 6 to be opened and closed, the structure is simple and easy to manufacture, the operation is convenient and fast, and the practicability is strong. When the transmission shaft is disassembled, the fastener 4 is screwed tightly to enable the enclasping piece 3 to enclasp the transmission shaft, then the jacking piece 5 is screwed tightly, the jacking piece 5 advances towards the direction of the main speed reducer flange, the outer end face of the main speed reducer flange is propped up, under the action of the reaction force, the enclasping piece 3 drives the transmission shaft to disengage from the main speed reducer flange, the principle is simple and practical, the situation of difficult disassembly of the transmission shaft is solved, and the damage to the transmission shaft and the main speed reducer flange is prevented well.

The device of the axis body dismantlement of this embodiment for dismantle axis body 1 from axis body mating piece 2, for current mode of beating dismantlement, can not damage axis body 1 and axis body mating piece 2, and axis body 1 and axis body mating piece 2 can not take place deformation, do benefit to the self quality and the assembly quality of guaranteeing both. The device is used for dismantling the automobile transmission shaft, and assembly quality is high after the transmission shaft assembly, does benefit to the dynamic balance volume of guaranteeing the transmission shaft, is difficult for producing NVH problems such as noise vibration to the demand of satisfying the customer that can be better.

The foregoing description of the preferred embodiments of the utility model is not intended to be limiting, but rather is intended to cover all modifications, equivalents, alternatives, and improvements that fall within the spirit and scope of the utility model.

Claims (10)

1. The utility model provides a device that axis body was dismantled which characterized in that:

the device is used for disassembling the shaft body (1) inserted on the shaft body matching piece (2) and comprises a holding piece (3), a fastening piece (4) and a propping piece (5);

the fastening piece (4) is arranged on the enclasping piece (3), and the enclasping piece (3) can enclasp the shaft body (1) through the fastening piece (4);

the jacking piece (5) is in threaded connection with the enclasping piece (3), one end of the jacking piece (5) is used for jacking the shaft body matching piece (2), the jacking piece (5) rotates relative to the enclasping piece (3), and the enclasping piece (3) can drive the enclasping shaft body (1) to be separated from the shaft body matching piece (2) along the axial direction of the shaft body (1).

2. The shaft disassembly device as claimed in claim 1, wherein:

the enclasping piece (3) comprises a first semi-ring (301) and a second semi-ring (302);

the first semi-ring (301) and the second semi-ring (302) are connected through the fastener (4) and are combined to form a ring shape to hold the shaft body (1).

3. The shaft disassembly device as claimed in claim 2, wherein:

one end of the first semi-ring (301) is pivoted with one end of the second semi-ring (302), and the other end of the first semi-ring is connected with the other end of the second semi-ring through the fastener (4).

4. A shaft removal apparatus as defined in claim 3, wherein:

the fastener (4) comprises a bolt for connecting the first half-ring (301) and the second half-ring (302).

5. The shaft disassembly device as claimed in claim 2, wherein:

screw holes (303) are formed in the first semi-ring (301) and the second semi-ring (302), and the jacking piece (5) is screwed in each screw hole (303).

6. The shaft disassembly device as claimed in claim 5, wherein:

the threaded holes (303) on the first semi-ring (301) and the second semi-ring (302) are distributed at intervals in the circumferential direction of the shaft body (1);

one end of the center line of each threaded hole (303) far away from the shaft body matching piece (2) and one end close to the shaft body matching piece (2) are inclined towards the center line of the shaft body (1).

7. The shaft disassembly device as claimed in claim 2, wherein:

the first semi-ring (301) and the second semi-ring (302) are provided with anti-slip parts (304);

the first semi-ring (301) and the second semi-ring (302) are respectively held tightly by the anti-slip part (304) of the first semi-ring (301) and the second semi-ring (302) so as to prevent the first semi-ring (301) and the second semi-ring (302) from sliding relative to the shaft body (1) along the axial direction of the shaft body (1).

8. The shaft disassembly device as in claim 7, wherein:

the anti-skid part (304) is an anti-skid bulge arranged on the first semi-ring (301) or the second semi-ring (302);

the anti-slip protrusions protrude towards the shaft body (1) so as to tightly prop against the shaft body (1).

9. The shaft disassembly device as in claim 8, wherein:

a plurality of anti-slip protrusions are arranged on the first semi-ring (301) and the second semi-ring (302);

each anti-slip protrusion extends around the circumference of the shaft body (1) and is in a strip shape, and a plurality of anti-slip protrusions on the first semi-ring (301) and the second semi-ring (302) are arranged at intervals along the axial direction of the shaft body (1).

10. The shaft disassembly device according to any one of claims 1 to 9, wherein:

one end of the shaft body matching piece (2) is propped against the propping piece (5), and a tool matching part (501) is arranged at the other end of the propping piece (5);

the tool engagement portion (501) is used for being engaged with an external tool to enable the propping piece (5) to rotate around the axial center line of the propping piece relative to the enclasping piece (3).