KR101572785B1 - tension control apparatus for a chain - Google Patents

tension control apparatus for a chain Download PDF

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Publication number
KR101572785B1
KR101572785B1 KR1020150111543A KR20150111543A KR101572785B1 KR 101572785 B1 KR101572785 B1 KR 101572785B1 KR 1020150111543 A KR1020150111543 A KR 1020150111543A KR 20150111543 A KR20150111543 A KR 20150111543A KR 101572785 B1 KR101572785 B1 KR 101572785B1
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KR
South Korea
Prior art keywords
piston
chain
tension
spring
rail
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KR1020150111543A
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Korean (ko)
Inventor
노홍길
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노홍길
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Priority to KR1020150111543A priority Critical patent/KR101572785B1/en
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Publication of KR101572785B1 publication Critical patent/KR101572785B1/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
    • F16H—GEARING
    • F16H7/00—Gearings for conveying rotary motion by endless flexible members
    • F16H7/08—Means for varying tension of belts, ropes, or chains
    • 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
    • F16H2007/0802—Actuators for final output members
    • F16H2007/0806—Compression coil springs

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  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Devices For Conveying Motion By Means Of Endless Flexible Members (AREA)

Abstract

The present invention relates to an apparatus for controlling tension of a chain. More specifically, the present invention is installed on one side of a chain transmitting power generated by a motor such as a conveyor line to a driven shaft to absorb the power in order to constantly maintain tension of the chain when the tension applied to the chain is temporarily increased due to jamming of foreign substances.

Description

[0001] The present invention relates to a tension control apparatus for a chain,

BACKGROUND OF THE INVENTION 1. Field of the Invention [0001] The present invention relates to a tension adjusting device for a chain, and more particularly, to a tension adjusting device for a chain, which is installed at one side of a chain for transmitting power generated by a motor, It is a tension control device of a chain that can keep the tension of the chain constant by absorbing it temporarily when suddenly increased.

The power transmission structure of a motor used for a conveyor line or a mechanical device transmits the power generated by the motor to the driven shaft by using a gear, a belt or a chain. In the case of the chain, a chain is interposed between the drive shaft and driven shaft, When the tension applied to the chain is lowered, the power transmission between the drive shaft and the driven shaft may not be smoothly performed, the chain may derail from the sprocket, On the other hand, if the tension on the chain suddenly increases, the chain may be damaged.

As a conventional technique for adjusting the tension of a chain in order to solve such a problem, there is a tension adjusting device of a chain belt proposed in Utility Model No. 20-0220721.

The tension measuring device includes a tension adjuster having a sprocket attached to an inner surface of a housing through which a sprocket engaged with a chain belt is exposed on one side of a front side of a chain belt connected to a driving shaft and a driven shaft, A pressure setting plate having a plurality of guide rods penetrating the bottom surface thereof and formed on the upper surface thereof; A pressure adjusting bolt screwed to the pressure setting plate is exposed on a bottom surface of the housing and a guide groove is formed on a front surface of the housing to elevate and retract the shaft rod of the sprocket. A tension adjusting device for a chain belt is disclosed in which a tension adjusting member is simply inserted into a housing so that movement of the tension adjusting member can not be smoothly performed.

In other words, since there is no separate structure between the housing and the tension regulator, the tension regulator can not be moved due to the movement of the tension regulator, so that the gap between the housing and the tension regulator In case of large size, due to the gap between the tension regulator and the housing, the tension adjuster hits the housing and a lot of noise is generated.

In addition, there is a fear that the force of the tension regulating opening acts only in one direction for increasing the tension applied to the chain, thereby shortening the life of the chain due to the tension adjusting device.

Furthermore, since the two guide rods are coupled to the pressure setting plate and the springs are respectively coupled to the guide rods, the manufacturing cost is increased due to an increase in the number of parts, and the tension adjusting rods are always pressed in only one direction. During the operation of adjusting the tension applied to the chain, an excessive load is applied to the chain, which may damage the chain or shorten the service life of the chain over time.

Accordingly, in the present invention, the power generated by the motor is installed on one side of a chain that transmits the power to the driven shaft, and when the tension applied to the chain rapidly increases due to the foreign matter being pinched or the like, And to provide a tension adjusting device for a chain that can be maintained.

Another object of the present invention is to provide a tension adjusting device for a chain in which a rail is installed in a case of a structure of the tension adjusting device and a piston is moved along the rail to smoothly move the piston and reduce noise .

Further, it is possible to provide a tension adjusting device for a chain in which a first spring and a second spring are provided at the lower portion and the upper portion of the piston, respectively, so as to improve the moving speed of the piston, thereby quickly responding to a sudden change in the tension applied to the chain .

A tension adjusting device for adjusting a tension applied to a chain in a chain according to the present invention is characterized in that the tension adjusting device comprises a case having a hollow inside and a rail formed on both sides of the inner side, A second spring formed between the upper plate and the piston and a second spring formed between the upper plate and the piston, and a middle plate formed on the lower portion of the piston, A first spring interposed between the middle plate and the piston, an elastic force adjusting bolt formed at a lower portion of the middle plate to adjust the position of the middle plate, a lower plate formed at a lower portion of the elastic force adjusting bolt, And is moved like a piston and is rotated It is characterized by consisting of a sprocket.

The tensioning device for a chain according to the present invention is installed on one side of a chain for transmitting power generated by a motor to a driven shaft so that when a tensile force applied to the chain rapidly increases due to a foreign matter being pinched or the like, And the piston is moved along the rail, thereby smoothly moving the piston and reducing the noise. In addition, the tension of the tension adjusting device can be maintained constant, And a first spring and a second spring are provided on the lower portion and the upper portion of the piston to improve the moving speed of the piston, thereby rapidly responding to a sudden change in the tension applied to the chain.

BRIEF DESCRIPTION OF THE DRAWINGS FIG.
Figure 2 is a partial perspective view of the present invention.
3 is a partial schematic view of the present invention
Figure 4 is a block diagram
5 is a partial schematic view of the present invention
6 is a diagram illustrating an example of the use state of the present invention

BACKGROUND OF THE INVENTION 1. Field of the Invention [0001] The present invention relates to a tension adjusting device for a chain, and more particularly, to a tension adjusting device for a chain, which is installed at one side of a chain for transmitting power generated by a motor, It is a tension control device of a chain that can keep the tension of the chain constant by absorbing it temporarily when suddenly increased.

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

FIG. 3 is a partial structural view of the present invention, FIG. 4 is a separated structural view of the present invention, FIG. 5 is a sectional view of the present invention In the tension adjusting device 1 for adjusting the tension applied to the chain 2 according to the present invention, the tension adjusting device 1 is hollow inside, A piston 12 accommodated in the case 10 and reciprocating along the rail 11 and formed on an upper portion of the piston 12; A second spring 22 interposed between the upper plate 23 and the piston 12 and a second spring 22 interposed between the upper plate 23 and the piston 12. The upper plate 23 is fixed to the case 10, (18) and a piston (12) interposed between the middle plate (18) and the piston An elastic force adjusting bolt 20 formed below the middle plate 18 to adjust the position of the middle plate 18 and a lower plate 21 formed at a lower portion of the elastic force adjusting bolt 20 And a sprocket 25 coupled to the piston bolt 24 fastened to the piston 12 and moved and rotated together with the piston 12.

First, the case 10 of the illustrated embodiment has a hollow rectangular cross section, and the rail 11 is formed therein. The rail 11 may be manufactured separately from the case 10 and fastened to the case 10 by means of fastening means such as welding or bolt or the like may be used to fasten the rail 11 and the case 10 A part of the rail 11 may be removed by cutting after extrusion into the cross-sectional shape.

A piston 12 accommodated in the case 10 and moving along the rail 11 is provided in the case 10. The piston 12 is provided with guide grooves 13 (corresponding to the shape of the rail 11) The rail 11 formed in the case 10 has a dove tail shape and the piston 12 has a shape corresponding to the rail 11, Even if the dovetail-shaped guide groove 13 is formed and the load applied to the piston 12 deviates from the direction in which the rail 11 is formed, the movement of the piston 12 can be smoothly performed.

An upper plate 23 is formed at an upper portion of the piston 12 to fix one side of the second spring 22. The second spring 22 has a seat groove 15 formed in the upper portion of the piston 12, And a middle plate 18 is formed at the lower part of the piston 12 as long as the remaining part is inserted into a seat groove (not shown) formed in the upper plate 23 and maintained in a compressed state. And a first spring 16 is installed between the middle plate 18 and the piston 12.

A lower plate 21 for adjusting the position of the middle plate 18 is formed under the middle plate 18. In the illustrated embodiment, a groove 33 is formed at the center of the lower plate 21 And the head portion of the elasticity adjusting bolt 20 is inserted into the groove 33. One end of the elasticity adjusting bolt 20 is screwed to the middle plate 18 so that the elasticity adjusting bolt 20 is inserted into the lower When the tool is inserted through the through hole formed in the plate 21, the middle plate 18 is moved to the case 10 along the thread formed on the elastic force adjusting bolt 20 while the position of the elastic force adjusting bolt 20 is maintained. The elastic force applied to the first spring 16 is adjusted.

The middle plate 18 is formed with a ring-shaped coupling groove 19, a screw is formed in the coupling groove 19, and a hollow pipe 17 hollow inside is coupled to the screw, A screw having a shape corresponding to the screw is formed on an outer circumferential surface of the hollow pipe 17 so that the middle plate 18 and the hollow pipe 17 are screwed and fixed to each other, A first spring 16 is fitted on the main surface.

A part of the hollow pipe 17 is inserted into the fitting groove 14 formed in the piston 12 to prevent the first spring 16 from being released.

A piston bolt 24 is coupled to the piston 12 and a sprocket 25 is fixed to one side of the piston bolt 24. The inner ring of the bearing 26 is fixed to the piston bolt 24, And the outer ring of the bearing 26 is fixed to the sprocket 25 so that the sprocket 25 can be rotated so that the sprocket 25 can be rotated by the piston fixing bolt 17 and the washer 28, . Thus, the sprocket 25 is moved with the piston 12 in a state of being able to rotate.

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

6, when the chain 2 is hooked on one side of the sprocket 25 and the tension applied to the chain 2 acts on the sprocket 25 side, the tension of the chain 2 causes the first spring 16 And the second spring 22 are maintained in a compressed state. When the chain 2 rotates in this state, the piston 12 moves according to the load of the chain 2 acting on the sprocket 25. The piston 2 is moved by a bolt or a nut to the power transmission system such as the chain 2, The tension of the chain 2 is increased so that the chain 2 applies a greater load to the sprocket and the first spring 16 and the second spring 22 are further compressed. After the foreign matter is removed, the piston 12 is pushed toward the upper plate 23 by the elastic force of the first spring 16, thereby returning the state of the chain to its original state.

On the other hand, the second spring 22 prevents a sudden increase in tension applied to the chain by reducing the abrupt force generated by the action of the first spring 16, so that the tension of the chain is increased by the foreign matter, When the first spring 16 is rapidly compressed and then the foreign matter is removed by applying a relatively large load, the piston 12 is rapidly moved up by the elastic force of the first spring 16 to apply a great amount of force to the chain, There is a risk of derailment or breakage in the sprocket 25, so that the sudden movement of the piston 12 is limited by the elastic force of the second spring 22.

The second spring 22 urges the piston 12 in the direction opposite to the direction of the force exerted by the first spring 16 against the piston 12, And the degree of freedom of the piston 12 is increased to prevent the piston 12 from being caught in the rail 11.

The first spring 16 can absorb a load applied to the sprocket 25 only if the spring constant k of the second spring 22 is higher than the spring constant k of the second spring 22, When returning to the original state, the piston can be accelerated as much as possible to prevent the chain from being disengaged from the sprocket.

The first spring 16 is higher than the spring constant k of the second spring 22 so that when the tension of the chain 2 is suddenly lowered the rising speed of the piston 12 is sucked, And can be prevented from being arbitrarily separated from the sprocket (25).

As a result, the tension adjusting device for a chain according to the present invention is installed at one side of a chain that transmits power generated by a motor to a driven shaft, and when the tensile force applied to the chain temporarily increases rapidly due to insertion of a foreign object or the like, In the structure of the tension adjusting device, a rail is provided in the case and the piston is moved along the rail, thereby smoothly moving the piston and reducing the noise. And a first spring and a second spring are installed on the lower portion and the upper portion of the piston, respectively, to improve the moving speed of the piston, thereby rapidly responding to a sudden change in the tension applied to the chain.

1. Tension control 2. Chain
3. Motor 4. Drive shaft
5. The driven shaft
10. Case 11. Rail
12. Piston 13. Guide groove
14. Fitting Holes 15. Holes
16. First spring 17. Hollow pipe
18. Middle plate 19. Tightening groove
20. Elastic adjustment bolt 21. Lower plate
22. Second spring 23. Upper plate
24. Piston bolt 25. Sprocket
26. Bearings 27. Bearing fixing bolts
28. Washers 29. Fastening bolts
30. Nut
31. Position adjusting bracket 32. Fixing bracket

Claims (6)

A tension adjusting device (1) for adjusting a tension applied to a chain (2)
The tension regulating device 1 includes a case 10 having a hollow interior and a rail 11 formed on both sides of the inner surface thereof and a piston 10 accommodated in the case 10 and reciprocating along the rail 11, An upper plate 23 formed on the upper portion of the piston 12 and fixed to the case 10 and a second spring 22 interposed between the upper plate 23 and the piston 12, A middle plate 18 formed under the piston 12 and a first spring 16 interposed between the middle plate 18 and the piston 12; An elastic force adjusting bolt 20 for adjusting the position of the middle plate 18 and a lower plate 21 formed at a lower portion of the elastic force adjusting bolt 20 and a piston bolt 24 And a sprocket 25 which is moved and rotated together with the piston 12 ,
The middle plate 18 is formed with a ring-shaped coupling groove 19, a screw is formed in the coupling groove 19, and a hollow pipe 17 hollow inside is coupled to the hollow plate 18, A screw having a shape corresponding to the screw is formed on an outer circumferential surface of the pipe 17 so that the middle plate 18 and the hollow pipe 17 are screwed and fixed to each other. Characterized in that a first spring (16) is inserted.
The method according to claim 1,
The rail 11 formed in the case 10 has a dovetail cross section and a guide groove 13 having a shape corresponding to the rail 11 is formed on the piston 12, Wherein the movement of the piston (12) is smooth even when the load is deviated from the direction in which the rail (11) is formed, thereby preventing noise.
The method according to claim 1,
A groove 33 is formed at the center of the lower plate 21 and a head portion of the elastic force adjusting bolt 20 is inserted into the groove 33. One end of the elastic force adjusting bolt 20 is inserted into the middle plate 18, Wherein the tension of the chain is adjusted by the tension of the chain.
delete The method according to claim 1,
Wherein a part of the hollow pipe (17) is inserted into the fitting groove (14) formed in the piston (12), thereby preventing the first spring (16) from coming off.
The method according to claim 1,
The first spring 16 is higher than the spring constant k of the second spring 22 so that when the tension of the chain 2 is suddenly lowered, the ascending speed of the piston 12 is sucked, Of the chain (3).
KR1020150111543A 2015-08-07 2015-08-07 tension control apparatus for a chain KR101572785B1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
KR1020150111543A KR101572785B1 (en) 2015-08-07 2015-08-07 tension control apparatus for a chain

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
KR1020150111543A KR101572785B1 (en) 2015-08-07 2015-08-07 tension control apparatus for a chain

Publications (1)

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KR101572785B1 true KR101572785B1 (en) 2015-11-27

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Application Number Title Priority Date Filing Date
KR1020150111543A KR101572785B1 (en) 2015-08-07 2015-08-07 tension control apparatus for a chain

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR20170127265A (en) * 2016-05-11 2017-11-21 차민석 the plane light source unit of exposure equipment printed circuit board

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR200220721Y1 (en) * 2000-11-06 2001-04-16 차영희 Tension controller of chain belt

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR200220721Y1 (en) * 2000-11-06 2001-04-16 차영희 Tension controller of chain belt

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR20170127265A (en) * 2016-05-11 2017-11-21 차민석 the plane light source unit of exposure equipment printed circuit board
KR101869318B1 (en) 2016-05-11 2018-06-20 차민석 the plane light source unit of exposure equipment printed circuit board

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