KR101636251B1 - A power transmission device capable of reducing the load on the spindle - Google Patents

A power transmission device capable of reducing the load on the spindle Download PDF

Info

Publication number
KR101636251B1
KR101636251B1 KR1020150105026A KR20150105026A KR101636251B1 KR 101636251 B1 KR101636251 B1 KR 101636251B1 KR 1020150105026 A KR1020150105026 A KR 1020150105026A KR 20150105026 A KR20150105026 A KR 20150105026A KR 101636251 B1 KR101636251 B1 KR 101636251B1
Authority
KR
South Korea
Prior art keywords
spindle
pulley
connecting means
coupling
power transmission
Prior art date
Application number
KR1020150105026A
Other languages
Korean (ko)
Inventor
황용구
Original Assignee
주식회사 우진지엠씨
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by 주식회사 우진지엠씨 filed Critical 주식회사 우진지엠씨
Priority to KR1020150105026A priority Critical patent/KR101636251B1/en
Application granted granted Critical
Publication of KR101636251B1 publication Critical patent/KR101636251B1/en

Links

Images

Classifications

    • 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
    • F16H—GEARING
    • F16H7/00—Gearings for conveying rotary motion by endless flexible members
    • F16H7/08—Means for varying tension of belts, ropes, or chains
    • F16H7/10—Means for varying tension of belts, ropes, or chains by adjusting the axis of a pulley
    • F16H7/12—Means for varying tension of belts, ropes, or chains by adjusting the axis of a pulley of an idle pulley
    • F16H7/1209—Means for varying tension of belts, ropes, or chains by adjusting the axis of a pulley of an idle pulley with vibration damping means
    • 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
    • F16H—GEARING
    • F16H55/00—Elements with teeth or friction surfaces for conveying motion; Worms, pulleys or sheaves for gearing mechanisms
    • F16H55/32—Friction members
    • F16H55/36—Pulleys

Abstract

The present invention relates to a power transmission device for reducing load of a spindle. The power transmission device for reducing load of a spindle comprises: a spindle; a hollow shaft installed by being inserted into the outer circumference of the spindle; a pulley bearing-coupled to the outer circumference of the hollow shaft; and a coupling having a first connection means fixated and coupled to the outer circumference of the spindle by forming semi-circular first holes in the outer circumference at constant intervals, a second connection means fixated and coupled to the pulley by forming second holes corresponding to the first hole in the inner circumference, and an elastic rod inserted into the first hole and the second hole of the first connection means and the second connection means to connect the first connection means and the second connection means.

Description

BACKGROUND OF THE INVENTION 1. Field of the Invention [0001] The present invention relates to a spindle load reduction power transfer device,

The present invention relates to a spindle load reduction power transmission apparatus, and more particularly, to a spindle load reduction power transmission apparatus capable of absorbing a load transmitted to a spindle by a belt pulley driven by an elastic rod of a coupling coupling the belt pulley and a spindle, The load transferred to the spindle is reduced to prevent damage due to heat generation or unbalanced load on the spindle. Also, the coupling structure consisting of the first and second connecting means and the elastic rod simplifies assembly, installation and maintenance. The present invention relates to a spindle load reducing power transmission device capable of preventing a safety accident by making it easy to reduce costs and to prevent separation of an elastic rod.

The power transmission device is used to obtain the rotational energy of the drive source by the purpose or design and to obtain the rotational power and the rotational speed of the final output side (slave shaft). In the conventional method, gears, chains, sprockets, Belts and pulleys have been mainly used.

Here, the power transmission apparatus using a belt is generally composed of a pulley wound around both ends of the belt, a pulley mount supporting the pulley, and a motor for transmitting power to the drive shaft (spindle) of the pulley mount. As shown in the drawings, a conventional pulley mount 10 includes a pulley mount housing 10 having a hollow 11a and a drive shaft 12 inserted into the hollow 11a of the housing 10, 11a and two bearings 13 and 14 for supporting the drive shaft 12 inside the housing 11 are provided on the outer periphery of the inner periphery of the housing 11a and the outer periphery of the drive shaft 12, So as to axially support the drive shaft 12 at both inner ends thereof.

However, in such a conventional power transmission apparatus, since the portion of the belt that receives the most tension is the drive shaft supported by the housing of the pulley mount, there is a problem that tensile stress or load is applied to the drive shaft. The bearing supporting the drive shaft is excessively damaged or abraded, and the problem of deformation due to heat generation is serious.

Therefore, in order to solve the above-mentioned problems, a non-contact power transmission device using a permanent magnet such as a pulley mount of a uniaxial robot such as Patent Document 10-2003-0042182 or a patent document 10-2010-0013355 has been developed .

1. Patent Publication No. 10-2003-0042182 (May 28, 2003) "Pulley Mounting of a Single Axis Robot" - Samsung Electronics Co., Ltd. 2. Patent Document No. 10-2010-0013355 (Feb. 10, 2010) "Contactless power transmission device using permanent magnet"

However, the above-mentioned conventional "pulley mount of uniaxial robot" has merely increased the number of bearings for supporting the drive shaft from two to three, which has a small effect.

Further, the above-mentioned conventional "noncontact power transmission device using a permanent magnet" has a problem in that it can not be applied to a place where the load of the permanent magnet is large, and the use thereof is limited .

Thus, the present applicant has developed a spindle load reduction power transmission device capable of minimizing the load on the spindle even when the spindle is interlocked with the belt pulley.

The object of the present invention is to absorb the load transmitted to the spindle by driving the belt pulley by the elastic rod of the coupling coupling the belt pulley and the spindle, thereby reducing the load transmitted to the spindle, And a spindle load reducing power transmission device in which breakage due to one side load is prevented.

Further, the present invention is characterized in that the coupling structure for connecting the spindle and the pulley is composed of a first coupling means fixedly coupled to the outer periphery of the spindle, a second coupling means fixedly coupled to the pulley, The present invention aims to provide a spindle load reduction power transmission device capable of easily assembling and assembling a spindle load by an elastic rod fitted in two holes, thereby reducing manufacturing and installation cost and facilitating maintenance. have.

In addition, the present invention provides a spindle load reduction power transmission device in which a safety accident can be prevented even in continuous use by simply preventing the separation of the elastic rods inserted into the first and second holes by the bolt- .

According to an aspect of the present invention, A hollow shaft fitted to the outer periphery of the spindle; A pulley coupled to the outer periphery of the hollow shaft; A first connecting means fixedly coupled to the outer periphery of the spindle by forming a first hole having a semicircular shape at an outer periphery at regular intervals and a second connecting means having a second hole corresponding to the first hole formed in the inner periphery thereof, And a coupling composed of an elastic rod that is inserted in first and second holes of the first and second coupling means and connects the first and second coupling means to each other, and a spindle load reduction power transmission device do.

The spindle load reduction power transmission apparatus of the present invention can absorb a load transmitted to the spindle by the belt pulley by the elastic rod of the coupling coupling the belt pulley and the spindle, There is an advantage that breakage due to generation or unilateral load of the spindle is prevented.

Further, the present invention is characterized in that the coupling structure for connecting the spindle and the pulley is composed of a first coupling means fixedly coupled to the outer periphery of the spindle, a second coupling means fixedly coupled to the pulley, And an elastic rod fitted in the two holes, so that it is easy to assemble and disassemble, so that the manufacturing and installation costs can be reduced and the maintenance can be easily performed.

In addition, the present invention is a useful invention in which a safety accident can be prevented even in the event of continuous use because the phenomenon that the elastic rod inserted in the first and second holes is separated by the bolt-connected bolts to the first connecting means can be easily prevented.

1 is a sectional view showing a pulley mount of a conventional uniaxial robot.
2 is a cross-sectional view showing a state in which the spindle load reduction power transmission device of the present invention is installed.
3 is a perspective view showing a state in which the spindle load reduction power transmission device of the present invention is installed.
Fig. 4 is an exploded perspective view showing the pulley and the coupling of the present invention separated. Fig.
5 is a perspective view showing a state of a coupling in which an elastic rod is fitted to first and second connecting means of the present invention;
6 is a perspective view showing a state in which an opening is bolted to a coupling to prevent separation of the elastic rod according to the present invention.

Hereinafter, the structure of the present invention will be described.

The present invention relates to a spindle load reduction power transmission device 100 (shown in FIG. 2 to FIG. 6) connected to a belt pulley so as to minimize a load on a spindle that rotates according to driving of a driving means And is characterized by comprising a spindle 10, a hollow shaft 20, a pulley 30, and a coupling 40.

Hereinafter, the spindle load reduction power transmission device 100 of the present invention including the spindle 10, the hollow shaft 20, the pulley 30, and the coupling 40 will be described in more detail.

First, the spindle 10 is installed on a hydraulic pressure spindle which is used by floating by using hydraulic pressure as known in the art. The spindle 10 is connected to a pulley 30 connected to a driving means, The detailed description will be omitted.

Secondly, the hollow shaft 20 is mounted on the outer periphery of the hollow shaft 20 so as to separate the pulley 30 from the spindle 10, The inner circumference of the hollow shaft 20 and the outer circumference of the spindle 10 are spaced apart from each other without being in contact with each other.

A male thread is formed at the other end of the hollow shaft 20 so that the nut 21 is coupled to the pulley 30 to be fixedly mounted on the bearing 31 in a state of being fitted to the outer periphery of the hollow shaft 20 .

Third, the pulley 30 is configured to transmit power to the spindle 10 according to the driving of the normal driving means, and the bearing 31 is coupled to the outer periphery of the hollow shaft 20.

One end of the bearing 31 fitted to the inner periphery of the pulley 30 is formed in close contact with the engaging projection 33. The bearing 31 is fixed to the bearing 31, And a nut 21 coupled to the outer periphery of the hollow shaft 20 is closely attached to the other side to prevent the pulley 30 from being separated.

Fourthly, the coupling 40 is configured to connect the spindle 10 and the pulley 30 in such a manner that transmission of tensile stress, i.e., one side load, to the spindle 10 is minimized. A second connecting means 47, and an elastic rod 48.

The first connecting means 43 of the coupling 40 is connected to the outer periphery of the spindle 10 and transmits the power transmitted from the pulley 30 to the spindle 10. The semi- The first holes 41 are formed at regular intervals.

The connection of the first connection means 43 may be firmly fixed to the outer periphery of the spindle 10 through a known conventional mechanical lock 43b or a fastening joint, It is preferable that the means 43 further includes a hooking protrusion 43a for restricting the depth at which the elastic bar 48 inserted in the first hole 41 is inserted.

The second connecting means 47 of the coupling 40 is one of the structures for transmitting the power transmitted from the pulley 30 to the spindle 10 in the same manner as the first connecting means 43, To the first connecting means (43).

The second connection means 47 includes a second hole 45 corresponding to the first hole 41 of the first connection means 43 for connection via the elastic rod 48 And one side is fixed to the pulley (30).

The pulley 30 may further include a first screw groove 36 at the other side of the pulley 30 so that the second connecting means 47 can be firmly fixed to the pulley 30. The second connecting means 47 The second connecting means 47 may be bolted to the pulley 30 and the second connecting means 47 may be connected to the second connecting means 47 through bolt coupling holes 46 corresponding to the first screw grooves 36, It is preferable that the engagement protrusion 47a is provided at the rear of the inner periphery of the second hole 45 so as to limit the depth at which the elastic rod 48 inserted into the second hole 45 is inserted.

The elastic rods 40 of the coupling 40 are inserted into the first and second holes 41 and 45 of the first and second connecting means 43 and 47, It is preferable that the pulleys 30 and the spindle 10 are integrally formed by connecting the means 43 and 47 indirectly with each other, The tension applied to the spindle 10 by the pulley 30 is absorbed by the elastic bar 48 formed between the first and second connection means 43 and 47. Therefore, So that the unilateral load transmitted to the load is minimized.

It is preferable that a spacing space 44 is formed between the outer circumference of the first connecting means 43 and the inner circumference of the second connecting means 47. This is because the power of the pulley 30 is transmitted to the spindle 10 In order to smoothly perform the load by the elastic rod 48, that is, the shock absorbing action, without causing the first and second connecting means 43 and 47 to directly contact each other during the rotation operation of the coupling 40 to be transmitted to be.

The coupling 40 further includes a structure for preventing the elastic rods 48 inserted in the first and second holes 41 and 45 from being separated from the first and second connecting means 43 and 47 This configuration can be easily achieved by further forming a hollow plate 49 which is coupled to the first connecting means 43 and closely attached to the elastic rod 48.

In order to further configure the openings 49 as described above, a plurality of second screw grooves 42 for bolt-connecting the openings 49 are formed on one side of the first connecting means 43, The hole 49a in which the bolt is inserted may be easily formed in the opening 49 so as to correspond to the second screw groove 42. According to this configuration, The bolt is brought into close contact with the first connection means 43 and the elastic rod 48 by the bolts so that the elastic rod 48 inserted in the first and second holes 41 and 45 of the coupling 40 Is prevented from being separated.

In the present invention, the open plate 49 is bolted to the first connecting means 43, but the open plate 49 is not connected to the second connecting means 47 other than the first connecting means 43 Bolt-coupled structure.

Hereinafter, the operation of the preferred embodiment of the present invention will be described.

First, when a drive means such as a motor is driven, a pulley 30 connected by a belt is coupled to the hydraulic pressure transmission means 1 to rotate about a hollow shaft 20 fitted to the outer periphery of the spindle 10. At this time, Since the pulley 30 is coupled with the bearing 31 on the outer periphery of the hollow shaft 20, the pulley 30 smoothly rotates with little generation of load.

When the pulley 30 rotates, the rotation of the second coupling means 47, which is fixedly coupled to one side of the pulley 30, is interlocked through the bolt coupling. The second coupling means 47, The first connecting means 43 is connected to the spindle 10 through the mechanical lock 43b and the first connecting means 43 is connected to the first connecting means 43 through the elastic rod 48 fitted in the second hole 45 formed in the first connecting means 43, The coupling 40 composed of the first and second coupling means 43 and 47 and the elastic rod 48 transmits the power to the spindle 10 while the pulley 30 is rotated. .

The coupling 40 transmitting the power of the pulley 30 as described above does not transmit the load transmitted to the second connecting means 47 through the pulley 30 to the first connecting means 43, So that the spindle 10 is transferred from the pulley 30 to the first and second coupling means 43 and 47 by the action of the elastic rod 48 fitted in the first and second holes 41 and 45 of the first and second connecting means 43 and 47. [ That is, tensile stress is minimized, thereby preventing wear and breakage of the spindle 10 due to the rotation of the spindle 10. [

The configuration of the coupling 40 for reducing the unidirectional load due to the power transmission as described above is not limited to the elasticity of connecting the first and second connecting means 43 and 47 and the first and second connecting means 43 and 47 It can be easily assembled and installed by means of the rods (48). Therefore, it is possible to reduce the manufacturing cost and the installation cost, and the maintenance can be facilitated due to the simple structure.

10: Spindle
20: hollow shaft 21: nut
30: pulley 31: bearing 33: locking projection 36: first screw groove
The present invention relates to a bolt coupling hole and a bolt coupling hole, and more particularly, to a bolt coupling hole and a bolt coupling hole, Elastic rod 49: open plate 49a: hole
100: Spindle load reduction power transmission device

Claims (4)

A spindle 10;
A hollow shaft 20 fitted to the outer periphery of the spindle 10 and having a male screw 20a at an outer peripheral end of the other end;
A bearing 31 is coupled to the outer periphery of the hollow shaft 20 and has a locking protrusion 33 which is in close contact with one side of the bearing 31 at an inner circumferential end thereof and a first screw groove 36 (30);
A nut 21 which is screwed to a male screw 20a formed at an outer circumferential end of the hollow shaft 20 and is in close contact with the other side of the bearing 31 so as to rotate and fix the pulley 30;
And a second screw groove 42 is formed on one side of the spindle 10 and a second screw groove 42 is formed on an outer periphery of the spindle 10 by a mechanical lock 43b. And a second hole 45 corresponding to the first hole 41 is formed on the inner circumference and a bolt coupling hole 46 (corresponding to the first screw groove 36) And a second connecting means 43 for forming a spacing space 44 between the outer circumference of the first connecting means 43 and the outer circumference of the first connecting means 43. [ First and second connecting means 43 and 43 which are fitted to the first and second holes 41 and 45 of the first and second connecting means 43 and 47 and are spaced apart from each other by the spacing space 44, A coupling (40) composed of an elastic rod (48) connecting the first and second ends (47, 47);
And an end plate (49) bolted to the second screw groove (42) of the first connecting means (43)
And the separation of the elastic rods (48) fitted in the first and second holes (41, 45) of the coupling (40) is prevented by the springs (49) coming into close contact with the elastic rods (48) Power transmission device. delete delete delete
KR1020150105026A 2015-07-24 2015-07-24 A power transmission device capable of reducing the load on the spindle KR101636251B1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
KR1020150105026A KR101636251B1 (en) 2015-07-24 2015-07-24 A power transmission device capable of reducing the load on the spindle

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
KR1020150105026A KR101636251B1 (en) 2015-07-24 2015-07-24 A power transmission device capable of reducing the load on the spindle

Publications (1)

Publication Number Publication Date
KR101636251B1 true KR101636251B1 (en) 2016-07-06

Family

ID=56502615

Family Applications (1)

Application Number Title Priority Date Filing Date
KR1020150105026A KR101636251B1 (en) 2015-07-24 2015-07-24 A power transmission device capable of reducing the load on the spindle

Country Status (1)

Country Link
KR (1) KR101636251B1 (en)

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2000018157A (en) * 1998-07-03 2000-01-18 Zexel Corp Power transmission unit of compressor without clutch
KR20030042182A (en) 2001-11-21 2003-05-28 삼성전자주식회사 Pulley mount of one axis robot
JP2004019678A (en) * 2002-06-12 2004-01-22 Denso Corp Power transmission device
KR20040006389A (en) * 2002-07-12 2004-01-24 한라공조주식회사 Power transmission gear for compressor
KR20040100496A (en) * 2003-05-23 2004-12-02 한라공조주식회사 Power transmission gear for clutchless compressor
KR20100013355A (en) 2008-07-31 2010-02-10 이재인 No contacted transmission using magnet

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2000018157A (en) * 1998-07-03 2000-01-18 Zexel Corp Power transmission unit of compressor without clutch
KR20030042182A (en) 2001-11-21 2003-05-28 삼성전자주식회사 Pulley mount of one axis robot
JP2004019678A (en) * 2002-06-12 2004-01-22 Denso Corp Power transmission device
KR20040006389A (en) * 2002-07-12 2004-01-24 한라공조주식회사 Power transmission gear for compressor
KR20040100496A (en) * 2003-05-23 2004-12-02 한라공조주식회사 Power transmission gear for clutchless compressor
KR20100013355A (en) 2008-07-31 2010-02-10 이재인 No contacted transmission using magnet

Similar Documents

Publication Publication Date Title
US3122901A (en) Untversal joint assembly
EP3055232B1 (en) Motorized transport roller
EP2910308B1 (en) Jaw crusher driving device
US9493310B2 (en) Sync motor with reduced noise level
US1254542A (en) Compensating sprocket.
CN107399560B (en) Built-in conveyer belt driving device who installs
EP3374633B1 (en) Drive train and method for wind turbine with elastic coupling
KR101636251B1 (en) A power transmission device capable of reducing the load on the spindle
KR200485413Y1 (en) waterwheel for fishfarm
KR102280549B1 (en) Rotary actuators and linear actuators
KR101469372B1 (en) coupling for railway vehicle
CA2956098C (en) Enhanced reel mixer drive
US3447392A (en) Torque transmission shafts
US10260567B2 (en) Coupling shafts in axial alignment
CN108194528B (en) Steel wire rope ring coupler and assembly method
KR101095755B1 (en) Coupling for a propulsion system
US20150308334A1 (en) Driveline assembly for radiator fan drive
JP2014206239A5 (en)
US9151346B2 (en) Centrifugal clutch drive system
CN212536477U (en) Anti-reverse coupling
CN219755149U (en) Fan coupling device
US20160084345A1 (en) Double cross-connecting gear device
CN217926731U (en) Transmission shaft with variable length
KR20120018987A (en) Fixing device of main bearing for travel reduction gear
CN219822648U (en) Transmission device of coal feeder

Legal Events

Date Code Title Description
E701 Decision to grant or registration of patent right
GRNT Written decision to grant
FPAY Annual fee payment

Payment date: 20190409

Year of fee payment: 4