KR101762672B1 - Bolting free power delivery system of universal joint - Google Patents

Bolting free power delivery system of universal joint Download PDF

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Publication number
KR101762672B1
KR101762672B1 KR1020150173730A KR20150173730A KR101762672B1 KR 101762672 B1 KR101762672 B1 KR 101762672B1 KR 1020150173730 A KR1020150173730 A KR 1020150173730A KR 20150173730 A KR20150173730 A KR 20150173730A KR 101762672 B1 KR101762672 B1 KR 101762672B1
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KR
South Korea
Prior art keywords
shaft
universal joint
spline
key
spline shaft
Prior art date
Application number
KR1020150173730A
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Korean (ko)
Other versions
KR20170067914A (en
Inventor
박배식
박정오
송지연
Original Assignee
주식회사유제이테크
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Priority to KR1020150173730A priority Critical patent/KR101762672B1/en
Publication of KR20170067914A publication Critical patent/KR20170067914A/en
Application granted granted Critical
Publication of KR101762672B1 publication Critical patent/KR101762672B1/en

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    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16D—COUPLINGS FOR TRANSMITTING ROTATION; CLUTCHES; BRAKES
    • F16D3/00—Yielding couplings, i.e. with means permitting movement between the connected parts during the drive
    • F16D3/16—Universal joints in which flexibility is produced by means of pivots or sliding or rolling connecting parts
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16D—COUPLINGS FOR TRANSMITTING ROTATION; CLUTCHES; BRAKES
    • F16D3/00—Yielding couplings, i.e. with means permitting movement between the connected parts during the drive
    • F16D3/50—Yielding couplings, i.e. with means permitting movement between the connected parts during the drive with the coupling parts connected by one or more intermediate members
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16D—COUPLINGS FOR TRANSMITTING ROTATION; CLUTCHES; BRAKES
    • F16D3/00—Yielding couplings, i.e. with means permitting movement between the connected parts during the drive
    • F16D3/50—Yielding couplings, i.e. with means permitting movement between the connected parts during the drive with the coupling parts connected by one or more intermediate members
    • F16D3/52—Yielding couplings, i.e. with means permitting movement between the connected parts during the drive with the coupling parts connected by one or more intermediate members comprising a continuous strip, spring, or the like engaging the coupling parts at a number of places

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  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Steering Controls (AREA)
  • Shafts, Cranks, Connecting Bars, And Related Bearings (AREA)

Abstract

The present invention relates to a boltless power transmission body of a universal joint wherein the universal joint portion and the drive shaft portion are constituted by independent parts so that the workability and the field construction workability are excellent and in particular the spline shaft constituting the drive shaft portion The universal joint portion 10, the driving shaft portion 20, the key portion 30, and the key portion 30 are provided in order to prevent the separation phenomenon in which the spline maintenance is performed by the elastic force of the elastic body, ), An elastic body (40), and a stop ring (50).

Description

BACKGROUND OF THE INVENTION 1. Field of the Invention [0001] The present invention relates to a universal joint,

More particularly, the present invention relates to a universal joint having a universal joint portion and a drive shaft portion that are independent components, and are excellent in workability and field workability. Particularly, a spline shaft and a spline repair constituting a drive shaft portion are provided on an elastic body To prevent a disengagement phenomenon in which a driving shaft is separated during use due to a mutual repulsive force, thereby enabling a boltless operation by simple key engagement.

In general, a universal joint is a kind of shaft coupling (coupling) used for connecting two axes when the two axes are relatively apart from each other or when the angle of the two axes (declination angle) is large. , A rolling roller of a steel mill, and the like.

In particular, when the angles are varied from time to time, the universal joints connected to the respective shafts are connected by a connection shaft portion including a spline shaft and a boss, so that the gap due to the variation of the distance between the shafts is compensated. However, when the spline side or the boss is integrally formed integrally with the universal joint in the case where the distance between the shafts is enlarged, the bosses are integrally fixed to the one universal joint and the bosses are integrally formed with the other one universal joint. The maintenance and repair due to the damage are costly and time consuming.

Conventionally, in JP-A-2002-0012851, when the arm splines provided on both sides are brought into close contact with the spline side by the elastic supporting force of the elastic member, and a clearance is generated due to wear due to long-term use of the slip device, , Techniques for improving the buffering force due to an external impact and reducing noise and vibration have been introduced.

However, in the conventional art, the female spline is integrally formed in a pair of universal joints, and the male splines are coupled to the male splines to transmit the power. In this structure, both ends of the male splines slide in the female splines , There was a problem that the occurrence of noise and operation noise was high due to existence of sliding parts at two places and that the arm spline had to be totally replaced with a universal joint in case of partial wear or damage.

In addition, since the arm spline and the universal joint are integrally formed, universal joints of various sizes having different arm spline sizes according to the distance between the shafts must be provided.

Accordingly, it is an object of the present invention to provide a universal joint unit and a drive shaft, which are independent components, and are excellent in workability and field workability. Particularly, a spline shaft and a spline repair, To prevent a disengagement phenomenon in which a driving shaft portion is separated during use due to a mutual repulsive force applied to the universal joint, thereby enabling a bolting operation by simple key engagement.

According to an aspect of the present invention,

A universal joint unit 10 including a cross shaft 12 and a pair of out joints 14 and a spline shaft 22 connected to the universal joint unit 10 and key- And a drive shaft portion 20,

The spline shaft 22 and the spline boss 24 are separately formed separately from the out joint 14 and are inserted and coupled in the axial direction by the key portion 30 and the key groove portion 32,

An elastic body 40 inserted into the spline shaft 22 and provided to provide a coupling force in the axial direction to the key portion 30 and the key groove portion 32;

And a stop ring 50 provided at an end of the spline shaft 22 so as to correspond to an end of the elastic body 40 and adapted to transmit a pressing force of the elastic body 40 to the spline shaft 22 .

In this case, the key part 30 and the key groove part 32 are inserted into the shaft in the axial direction by the square bar, the grooves, the key, and the key groove.

The stop ring 50 is formed in a ring shape so as to be fixed to the engaging shoulder portion 22a of the spline shaft 22 by an engagement type or a fastener 50a.

The stop ring 50 may be screwed to the spline shaft 22 or may be provided with a spacer ring 42 to adjust the elastic force of the elastic body 40.

Further, an axial tube 60 connected to the stop ring 50 and extending to receive the elastic body 40 is provided.

According to the above construction and operation, the universal joint portion and the drive shaft portion are constituted by independent parts, and are excellent in machining and field workability. Particularly, the spline shaft and the spline maintenance constituting the drive shaft portion are acted upon by the elastic body, It is possible to perform the bolting operation by the simple key engagement because the separation phenomenon separated from the floating part of the universal joint is prevented.

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a general view of a bolting power transmission of a universal joint according to an embodiment of the present invention; FIG.
BACKGROUND OF THE INVENTION 1. Field of the Invention [0001] The present invention relates to a universal joint, and more particularly, to a universal joint having a spline shaft and a spline boss.
3 is a configuration diagram showing an embodiment of a stop ring structure provided in a boltless power transmission body of a universal joint according to the present invention.
4 is a view showing another embodiment of a stop ring structure provided in a boltless power transmission body of a universal joint according to the present invention.
Fig. 5 is a view showing another embodiment in which an axial tube is formed in a boltless power transmission body of a universal joint according to the present invention;

Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings.

The present invention relates to a boltless power transmission body of a universal joint wherein the universal joint portion and the drive shaft portion are constituted by independent parts so that the workability and the field construction workability are excellent and in particular the spline shaft constituting the drive shaft portion The universal joint portion 10, the driving shaft portion 20, the key portion 30, and the key portion 30 are provided in order to prevent the separation phenomenon in which the spline maintenance is performed by the elastic force of the elastic body, ), An elastic body (40), and a stop ring (50).

The boltless power transmission body of the universal joint according to the present invention comprises a cross shaft 12 and a drive unit side universal joint unit 12 comprising an out joint 14 axially coupled at an isochronous position of 180 ° opposing each other about the cross shaft 12, (10) and a universal joint portion (10) to be driven. A universal joint portion 10 formed of a pair of out joints 14 and a spline shaft 22 connected to the universal joint portion 10 so as to be key- And a drive shaft portion 20 formed of a plurality of gears 24. As shown in FIG. 1, the out-joint 14 is axially coupled at a 180-degree isostatic position with respect to each other about the cross shaft 12 to form a single assembly, in which one of the out-out joints 14 is connected to a power source And the other one-side out joint 14 is connected to the drive shaft portion 20 so that the driving force is transmitted at an arbitrary angle.

The driving shaft portion 20 includes a spline shaft 22 and a spline boss 24 that are key-engaged. Even when the driving force is transmitted at an arbitrary angle, the distance between the driving source and the driven member varies, (22) so as to be stretchable and contractible in the longitudinal direction of the shaft.

The spline shaft 22 and the spline boss 24 are formed separately from the out joint 14 and are inserted and coupled in the axial direction by the key portion 30 and the key groove portion 32. The key portion 30 and the key groove portion 32 are provided so as to be inserted and fastened only by allowing the shaft to be conveyed only in the longitudinal direction thereof by a square bar or a groove or a key and a key groove. FIG. 2 (a) And a key groove portion 32 is formed at a position corresponding to the shaft hole and the insertion shaft so that the key portion 30 is inserted and fastened to the spine bosses 22 and 24, 2 (b) shows a state in which the key groove portion 32 of the out joint portion 14 is formed as a groove (square groove), and the key portion 32 at the end of the spline shaft (spline boss) 22 The key portion 30 and the key groove portion 32 are formed in the shape of a square bar having the same shape as that of the key groove portion 32, 40, the insertion force is continuously maintained.

Since the universal joint part 10 and the drive shaft part 20 are formed as independent parts and are inserted into and coupled with each other in the longitudinal direction of the shaft by the key part 30 and the key groove part 32, The spline shaft 22 or the spline boss 24 is pulled out without separating the universal joint part 10 fixed to the driving part side and the driven part side during the field installation so that the elastic body 40 can be simply separated So that the initial assembly is simple and the partial replacement work can be performed quickly in the maintenance work.

The elastic body 40 according to the present invention is inserted into the spline shaft 22 to provide the key portion 30 and the key groove portion 32 with an axial longitudinal coupling force. The elastic member 40 is formed of a coil spring as shown in FIG. 1 and is provided so as to press the end of the spline boss 24 at one end in a state of being inserted into the spline shaft 22, So as to press the spline shaft 22. The universal joint portion 10 and the drive shaft portion 20 are engaged with each other by key engagement so that the repulsive force of the spline shaft 22 to protrude on the spline boss 24 is continuously applied by the elastic force of the elastic body 40, There is an advantage that the drift phenomenon that the drive shaft portion 20 is separated from the universal joint portion 10 during operation is prevented. By the elastic force of the elastic body 40, the fixation of the key engagement portion between the spline shaft 22 and the spline boss 24 is prevented, and the expansion and contraction length is flexibly adjusted.

The stop ring 50 according to the present invention is provided at the end of the spline shaft 22 so as to correspond to the end of the elastic body 40 so that the pressing force of the elastic body 40 is transmitted to the spline shaft 22. The stop ring 50 is formed in a ring shape so as to be positioned and fixed to the engaging shoulder portion 22a of the spline shaft 22 by an engagement type or a fastener 50a. FIG. 3 (a) 22 shows a state in which the stopping ring 22a is formed and the stop ring 50 having the through-hole formed therein is caught by the stopping ring 22a. FIG. 3 (b) 3 shows a state in which a key groove 22b is formed in the spline shaft 22 and a key groove 22b is formed in the key groove 22a. Type fastener 50a is fastened and fixed on the corresponding stop ring 50. When the pin-type fastener 50a is applied, the C-ring is installed on the outer peripheral surface of the stop ring 50 So as to prevent disengagement of the fastening tool 50a.

The stop ring 50 may be screwed to the spline shaft 22 or a spacer ring 42 may be additionally provided to adjust the elastic force of the elastic body 40. 4A is a perspective view of the stop ring 50 and the spline shaft 22. The stop ring 50 and the spline shaft 22 are threadedly coupled to each other so that the stop rings 50 are provided in pairs to set the position of the one stop ring 50, 4 (b) is further provided with a ring-type space ring 52 separately from the stop ring 50 so as to be additionally installed .

The elastic force of the elastic body 40 is adjusted by adjusting the position of the stop ring screwed to the spline shaft 22 or by additionally providing the space ring 52. Thus, the universal joint portion 10 and the drive shaft portion The operator can easily adjust the elastic force of the elastic body 40 in the field without replacing the elastic body according to the magnitude of the power transmission angle between the drive unit side and the driven unit side connected by the spline shaft 22 and the spline boss 24, Can be adjusted.

Further, an axial tube 60 connected to the stop ring 50 and extending to receive the elastic body 40 is provided. The shaft tube 60 is an empty pipe with one end fixed to the stop ring 50 and the other end extended to the other side to receive the spline boss 24 and to receive the elastic body 40 therein. This prevents the malfunction due to foreign matter adsorption and prevents the spline shaft 22 from being damaged by falling objects as the spool line shaft 22 is protected from the outside by the shaft tube 60 as well as the elastic body 40, So that the lubricating oil can be stably operated for a long period of time.

10: universal joint part 20: drive shaft part
30: key portion 40: elastic body
50: stop ring 60: shaft tube

Claims (5)

A universal joint part 10 on the driving part side and a universal joint part 10 on the driven part side constituted by a cross shaft 12 and an out joint 14 axially joined at positions opposed to each other about the cross shaft 12;
A driving shaft portion 20 connected to the pair of universal joint portions 10 and composed of a spline shaft 22 and a spline boss 24 that are key-engaged in the longitudinal direction of the shaft;
The universal joint part 10 and the drive shaft part 20 are constituted by independent parts and are inserted and coupled by the key part 30 and the key groove part 32. The key part 30 and the key groove part 32 are formed by a square bar And a groove or a key and a keyway, and is allowed to be conveyed only in the longitudinal direction of the shaft,
A stop ring (50) inserted and positioned on the spline shaft (22);
And one end of the spline shaft 22 is inserted into the spline shaft 22 and the other end of the spline shaft 24 abuts on the end of the spline boss 24 so that the coupling force between the key portion 30 and the key- And an elastic body (40)
The stop ring 22 is formed on the spline shaft 22 in accordance with the magnitude of the power transmission angle between the drive unit side universal joint unit 10 and the driven unit side universal joint unit 10 and the expansion and contraction distance between the spline shaft 22 and the spline boss 24. [ 50) is adjusted to adjust the elastic force of the elastic body (50). delete The method according to claim 1,
Characterized in that the stop ring (50) is divided and formed into a ring shape so as to be fixed to the engagement step portion (22a) of the spline shaft (22) by an engagement type or a fastening hole (50a) Carrier. The method according to claim 1,
Wherein the stop ring (50) is screwed to the spline shaft (22) or a space ring (42) is additionally provided to adjust the elastic force of the elastic body (40). The method according to claim 1,
And an axial tube (60) connected to the stop ring (50) and extending to receive the elastic body (40).
KR1020150173730A 2015-12-08 2015-12-08 Bolting free power delivery system of universal joint KR101762672B1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
KR1020150173730A KR101762672B1 (en) 2015-12-08 2015-12-08 Bolting free power delivery system of universal joint

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Application Number Priority Date Filing Date Title
KR1020150173730A KR101762672B1 (en) 2015-12-08 2015-12-08 Bolting free power delivery system of universal joint

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KR20170067914A KR20170067914A (en) 2017-06-19
KR101762672B1 true KR101762672B1 (en) 2017-08-01

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR102008506B1 (en) * 2017-10-17 2019-08-07 주식회사 포스코 Universal joint
KR102491820B1 (en) * 2022-08-17 2023-01-27 김승옥 Universal Joint

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2008208865A (en) * 2007-02-23 2008-09-11 Jtekt Corp Shaft coupling and steering device

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2008208865A (en) * 2007-02-23 2008-09-11 Jtekt Corp Shaft coupling and steering device

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