KR101530075B1 - Pivot bearing removal device for transmission - Google Patents

Abstract

The present invention relates to a main shaft bearing detachment device for a transmission capable of easily separating a bearing coupled to a main shaft of a transmission, and is capable of easily coupling the leg to the bearing while using a plurality of legs, Which can be easily removed from the main shaft without detaching the legs in the process of removing the main bearing and can be easily replaced individually when the legs are worn out. .
That is, according to the present invention, a plurality of legs are coupled to a leg body, a threaded rod coupled with an axially extending center which freely rotates at the lower end is inserted into the center of the leg body, and the inner ring of the bearing is hooked A bearing detachment apparatus for a bearing detachable apparatus, comprising: a bearing body; A leg setting panel is formed in a disk shape on the leg body, and a plurality of leg engagement grooves formed in the leg setting panel in a direction perpendicular to the axis are formed radially; Wherein the legs are formed in a size larger than the thickness of the leg setting panel so that the upper and lower surfaces of the leg setting panel are formed on the upper and lower sides of the leg, and the spring inner groove formed in the leg setting panel, Wherein a distance between the bottom of the panel coupling groove formed in the leg and the side wall of the holder positioning groove is larger than the depth of the leg coupling groove Small dimensions; An upper leg holder formed in a ring shape conforming to the thickness of the leg setting panel at an outer periphery of the leg setting panel, the upper leg holder being positioned in a holder holding groove formed at the upper outer side of the leg, And a holder protrusion is further formed on the outer side of the middle of the leg so that the ring-shaped lower leg holder can be positioned.

Description

Technical Field [0001] The present invention relates to a pivot bearing removal device for transmission,

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a main shaft bearing detachment device for a transmission capable of easily separating a bearing coupled to a main shaft of a transmission and more specifically to a bearing detachment device that can easily couple legs to a bearing while using a plurality of legs , A uniform force is applied to the entire leg, so that the bearing can be easily removed from the main shaft without detaching the leg in the process of removing it, and the function of providing convenience of maintenance that can be easily and individually replaced when the leg is worn And to provide a main shaft bearing detachment device for a transmission.

In the case of a transmission installed in a vehicle, the gears are coupled with each other on a plurality of axles supported by the bearings so that the gears can be coupled to each other, thereby providing different rotation ratios.

Meanwhile, in the case of the above-described transmission, when the transmission needs to be disassembled for various reasons, it is necessary to remove the bearing coupled to the main shaft.

Various types of bearing detachment devices have been proposed as tools for removing bearings. Typical examples are a "main shaft bearing detachment device for transmission" of the Korean Utility Model Application (U) 20-1998-034223 (September 15, 1998) And 'auxiliary holders for removing bearings' of Korean Registered Utility Model (Y1) 20-0264841 (Feb. 25, 2002). In these cases, a working bolt (adjusting screw) is attached to the center of the horizontal support (Supporting bar) can be pivotally connected to the horizontal support member. When the horizontal support member is moved upward by the operation of the operation bolt, the bearing holder (supporting bar) moves the bearing upward to move the main shaft and the housing So that the bearings can be separated from each other.

However, in the conventional bearing detachment apparatus, since the two bearing holders (support bars) are simply coupled to the horizontal support members, there is an inconvenience that the entire bearing removal apparatus is required to be engaged with the bearing holders (support bars) (Support bar) is not firmly fixed to the bearing, so that the clamping of the bearing holder (support bar) is released from the bearing in the separation process.

KR 201998034223 U 1998.09.15. KR 200264841 Y1 2002.02.25.

Therefore, the present inventor has researched and developed the present invention of a conventional bearing detachment apparatus. In the present invention, a plurality of legs elastically supported by a spring are disposed on a leg body so as to be coupled to an upper leg holder, The legs can be easily attached to the bearing by restricting the extension of the lower leg holder to the outside so that uniform force is applied to the entire leg so that the bearing can be easily removed from the main shaft without detaching the legs during the removal The present invention has been accomplished on the basis of the technical object of the present invention by providing a main shaft bearing detachment device for a functional transmission that can provide convenience of maintenance that can be easily and individually replaced when the legs are worn.

In the present invention, a plurality of legs are coupled to a leg body, and a threaded rod coupled with an axially extending center that freely rotates at a lower end of the body of the leg body is engaged with the engagement protrusion protruding inwardly from a lower end of the leg, Wherein the leg body including the legs is moved upwards along the swash bar when the swash bar is rotated to remove the bearing, A leg setting panel is formed of a circular plate on the leg body, and a plurality of leg engagement grooves formed in the leg setting panel in a direction perpendicular to the axis are formed radially; Wherein the legs are formed in a size larger than the thickness of the leg setting panel so that the upper and lower surfaces of the leg setting panel are formed on the upper and lower sides of the leg, and the spring inner groove formed in the leg setting panel, Wherein a distance between the bottom of the panel coupling groove formed in the leg and the side wall of the holder positioning groove is larger than the depth of the leg coupling groove Small dimensions; An upper leg holder formed in a ring shape conforming to the thickness of the leg setting panel at an outer periphery of the leg setting panel, the upper leg holder being positioned in a holder holding groove formed at the upper outer side of the leg, A holder protrusion is further formed on the outer side of the middle of the leg so that the ring-shaped lower leg holder can be positioned.

In addition, in the present invention, a setting screw assembly, a setting screw, and a hole are formed on the upper latching jaw formed on the upper end of the leg and the upper surface of the leg setting panel contacting the latching jaw, respectively.

Further, in the present invention, a knob for engaging with the knob is formed on the shaft portion of the leg body in a direction perpendicular to the axis, and the knob is assembled to the knob for engaging the knob.

According to the present invention, when a plurality of legs are radially assembled to the leg body, the engagement protrusions formed at the lower ends of the legs can be held in close contact with the bearing inner ring by the spring, The legs can be easily combined.

Further, according to the present invention, since the leg body to which the legs are coupled when lifting the screw rod moves upward along the screw rod and moves the bearing upward, the bearing removing operation can be performed easily and without difficulty. It is possible to eliminate problems such as deterioration of bearing function and the like.

BRIEF DESCRIPTION OF THE DRAWINGS Fig. 1 is an external perspective view showing a preferred embodiment of a main shaft bearing detachment device for a transmission provided in the present invention; Fig.
FIG. 2 is an exploded perspective view of a main shaft bearing detachment device for a transmission provided in the present invention. FIG.
3 is a cross-sectional view of the main shaft bearing detachment device for a transmission provided in the present invention
Figure 4 shows the use state of the present invention
5 is a cross-sectional view showing the disassembled and assembled state of the legs provided by the present invention

Hereinafter, an embodiment of a spindle bearing detaching apparatus for a transmission provided by the present invention will be described with reference to the accompanying drawings.

FIG. 1 is an exploded perspective view showing a preferred embodiment of a main shaft bearing detachment device for a transmission provided in the present invention. FIG. 2 is an exploded perspective view of a main shaft bearing detachment device for a transmission provided in the present invention, Sectional view of a main shaft bearing detachment device for a transmission provided by the invention, and Fig. 4 shows a use state diagram of the present invention.

As shown in the drawing, the main shaft bearing detachment device 1 of the present invention is provided with a threaded rod 2 at the lower end to which the shaft end 3 is coupled in a freely rotating state and a leg body 2 which is assembled to the threaded rod 2. [ A plurality of legs 5 coupled to the leg body 4 and formed with bearing engaging shoulders 51 facing toward the threaded rods and a plurality of legs 5 joined to the leg bodies 4 to surround the upper ends of the legs 5, The leg holder 6 and the lower leg holder 7 surrounding the middle lower ends of the legs 5. The constitution and operation of each member will be described in detail below.

The screw rod 2 has a head 21 formed in a square or hexagonal shape so that a wrench can be coupled to an upper end of the screw rod 2 and a shaft end 3 rotatably coupled to the screw rod 2 is coupled to a lower end thereof . Although it is not shown in detail, it is preferable that the shaft end portion 3 is configured such that a snap ring is coupled to the screw rod 2 in a state where the bearing is coupled to the inside of the housing. In the state where the screw rod 2 is engaged It is of course possible to provide another configuration that freely rotates.

The leg body (4) is screwed to the threaded rod (2) and is lifted and lowered along the threaded rod (2). The leg body 4 forms a disk-shaped leg setting panel 42 below the shaft holding portion 41. A screw hole 43 which is engaged with the screw rod 2 is formed at the center of the shaft holding portion 41 .

On the shaft supporting portion 41, knobs 44 for engaging the knobs are formed on the left and right sides in a direction perpendicular to the axis, and the knob 8 having a rod-like structure is assembled to these knobs 44 for engaging the knobs. The knob 8 can be selectively used and the knob 8 can be selectively gripped when the screw 200 is rotated by using a wrench so that the leg body 4 is firmly fixed Thus, the main shaft bearing detachment device 1 for a transmission can be stably operated without shaking.

A plurality of leg engagement grooves 45 are radially formed on the disc-shaped leg setting panel 42 formed on the leg body 4 in a circumferential direction perpendicular to the threaded rods 2. A spring inner groove (46) is formed in the leg engagement groove (45) in a direction perpendicular to the threaded rod (2).

The legs 5 coupled to the leg engagement grooves 45 are formed in the upper and lower sides of the leg setting panel 42 so that the upper and lower surfaces of the leg setting panel 42 and the lower legs 52, The panel connecting groove 54 is formed with a dimension larger than the thickness. The panel engaging groove 54 is formed with a spring inner groove 55 facing the spring inner groove 46 formed in the leg engagement groove 45 of the leg setting panel 42 and a compression spring 9 is interposed So that the upper end of the leg 5 can be elastically supported to the outside of the leg setting panel 42.

A holder holding groove 56 is formed at an upper outer side of the upper end of the leg 5 on which the panel coupling groove 54 is formed to seat the upper leg holder 6.

The upper leg holder 6 is formed in a ring shape and has an inner diameter equal to the outer diameter of the leg setting panel 42 so that the upper leg holder 6 is connected to the leg setting panel 42 and the upper leg holder 6 The screw hole 47 and the setting hole 61 are formed and fixed to the holder fixing bolt 10 so that the upper end of the leg 5, which is assembled in the state of being inserted into the leg engagement groove 45, So that it can be supported in an elastically supported state.

The upper end of the leg 5 positioned between the leg engagement groove 45 formed in the leg setting panel 42 and the upper leg holder 6 has a dimension smaller than the depth P of the leg engagement groove 45 .

The distance a between the bottom 54a of the panel engaging groove 54 formed in the leg 5 and the side wall 56a of the holder placing groove 56 is smaller than the depth P of the leg engaging groove 45, The panel connecting grooves 54 are formed to have dimensions larger than the thickness of the leg setting panel 42 so that the engaging protrusions 52 and 53 facing the upper and lower surfaces of the leg setting panel 42 are formed. The upper end of the leg 5 is pressed toward the upper leg holder 6 and the lower end of the leg 5 is rotated inward toward the inner ring 210 of the bearing 200. [

A holder retention projection 57 is further formed on the outer side of the middle and lower ends of the legs 5 and a ring-shaped lower leg holder 7 is coupled to the upper side of the holder retention projection 57, Restricting the rotation.

In the present invention, the upper leg holder 6 is fixed to the upper leg holder 6 with the upper end of the leg 5 being resiliently supported by the compression spring 9 into the leg engagement groove 45 on the leg setting panel 42, In order to assemble the legs 5 with the legs 5 fixed to the legs 5, the upper engaging jaws 52 formed on the upper end of the legs 5 and the legs setting panel 42 contacting the engaging jaws 52, And the setting screw 11 can be assembled by forming a screw assembly hole 52a and a setting or hole 42a.

5, when the leg 5 is assembled or disassembled, the leg 5 is inserted into the leg engagement groove 45 formed in the leg setting panel 42 so as to be supported by the compression spring 9, A setting screw assembling hole 52a formed in the upper engaging jaw 52 formed at the upper end of the leg 5 and a leg setting panel 52a contacting the engaging jaw 52, A plurality of the legs 5 are assembled in order by assembling the setting screws 11 with the setting or holes 42a formed on the upper surface of the upper leg holder 6 by fixing the legs 5, The setting screws 11 may be removed after assembly in the leg setting panel 42 to free the upper end of the legs 5 from being restrained.

The length and shape of the legs 5 according to the diameter of the bearing 200 can be changed according to the diameter of the bearing 200 provided in the present invention, and the number of the legs 5 can be increased or decreased. At least three or more legs 5 are required for installation, and eleven legs 5 are applied in the present invention.

In the case of using the main shaft bearing detachment device 1 configured as described above, when the bearing 200 having the outer ring 220 and the inner ring 210 coupled to the transmission 100 and the main shaft 300 is to be removed The lower end of the leg 5 is inserted between the inner ring 210 and the outer ring 200 of the bearing 200 while the main shaft 300 is positioned inside the leg 5. At this time, The bearing engaging step 51 formed on the inner ring 210 is pressed toward the inner ring 210 by the elastic force of the compression spring 9 to be engaged with the ball inner groove formed in the inner ring 210. In this state, when the threaded rod 2 provided on the leg body 4 is rotated forward, the shaft end 3 coupled to the lower end of the threaded rod 2 is supported by the upper end of the main shaft 300, The bearing 400 can be easily separated from the transmission 100 and the main shaft 300 by moving the body 4 upward. In addition, since the handle 8 can be additionally coupled to the leg body 4, when the bearing 200 is to be separated more safely or when the bearing 200 is severely fastened, So that the bearing 200 can be removed more safely while the transmission 100 is rotated during operation to prevent industrial accidents.

While the present invention has been described in connection with what is presently considered to be practical exemplary embodiments, it is to be understood that the invention is not limited to the disclosed embodiments. Therefore, the scope of protection of the present invention should not be limited to the described embodiment, but should be determined by the equivalents as well as the claims that follow.

1: (for transmission) Spindle bearing removal device
2: nail bar 21: head
3: Axis region 4: Leg body
41: shank portion 42: leg setting panel
42a: setting or screw hole 43: screw hole
44: screw hole 45: leg engagement groove
46: spring inner groove 47: screw hole
5: Leg 51: Bearing jaw chin
52,53: latching jaw 52a: setting screw assembly
54: panel coupling groove 55: spring inner groove
56: holder holder groove 57: holder holder projection
6: upper leg holder 61: setting hole
7: lower leg holder 8: handle
9: Compression spring 10: Holder fixing bolt
11: Setting screw 100: Transmission
200: bearing 210: inner ring
220: outer ring 300:

Claims (3)

A plurality of legs 5 are coupled to the leg body 4 and a threaded rod 2 coupled to a shaft end 3 rotates freely at the lower end to the center of the leg body 4, And a bearing engaging step (51) protruding inward at a lower end of the bearing (200) so as to be able to remove the bearing (200), the main bearing bearing removing device (1)
The leg setting panel 42 is formed in a disc shape on the leg body 4 and a plurality of leg engagement grooves 45 having a spring inner groove 46 formed in a direction perpendicular to the axis are radially formed in the leg setting panel 42 ;
The legs 5 are formed to have a size larger than the thickness of the leg setting panel 42 so that the upper and lower surfaces of the leg setting panel 42 and the engaging protrusions 52, A panel engaging groove 54 in which a spring inner groove 46 formed in the panel 42 is formed is formed and an upper leg holder 6 is provided at an upper outer side of the leg 5, The distance a between the bottom 54a of the panel engagement groove 54 formed in the leg 5 and the side wall 56a of the holder positioning groove 56 is smaller than the distance a between the leg engagement Is less than the depth (P) of the groove (45);
An upper leg holder 6 is formed on the outer periphery of the leg setting panel 42 in a ring shape conforming to the thickness of the leg setting panel 42 and is accommodated in a holder holding recess 56 formed on the upper outer side of the leg 5, And fixes it with the holder fixing bolt 10;
Wherein a holder inner protrusion (57) is further formed outside the middle and lower ends of the leg (5) so that the ring-shaped lower leg holder (7) can be positioned.
The method of claim 1,
An upper latching jaw 52 formed at an upper end of the leg 5,
Wherein a setting screw assembly hole (52a) and a setting screw hole (42a) are formed on the upper surface of a leg setting panel (42) in contact with the engagement protrusion (52) Main spindle bearing removal device.
The method according to claim 1 or 2,
Wherein a knob (44) is formed in a shaft-supporting portion (41) of the leg body (4) in a direction perpendicular to the axis and the knob (8) is assembled to the knob- Spindle bearing removal device for transmission.

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