KR101701754B1 - Chain structure and chain block including the same - Google Patents

Chain structure and chain block including the same Download PDF

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Publication number
KR101701754B1
KR101701754B1 KR1020150130666A KR20150130666A KR101701754B1 KR 101701754 B1 KR101701754 B1 KR 101701754B1 KR 1020150130666 A KR1020150130666 A KR 1020150130666A KR 20150130666 A KR20150130666 A KR 20150130666A KR 101701754 B1 KR101701754 B1 KR 101701754B1
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KR
South Korea
Prior art keywords
chain
pin
region
key
hole
Prior art date
Application number
KR1020150130666A
Other languages
Korean (ko)
Inventor
박철우
Original Assignee
삼성중공업 주식회사
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Publication date
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Priority to KR1020150130666A priority Critical patent/KR101701754B1/en
Application granted granted Critical
Publication of KR101701754B1 publication Critical patent/KR101701754B1/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
    • F16G—BELTS, CABLES, OR ROPES, PREDOMINANTLY USED FOR DRIVING PURPOSES; CHAINS; FITTINGS PREDOMINANTLY USED THEREFOR
    • F16G13/00—Chains
    • F16G13/12—Hauling- or hoisting-chains so called ornamental chains
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B66—HOISTING; LIFTING; HAULING
    • B66C—CRANES; LOAD-ENGAGING ELEMENTS OR DEVICES FOR CRANES, CAPSTANS, WINCHES, OR TACKLES
    • B66C1/00—Load-engaging elements or devices attached to lifting or lowering gear of cranes or adapted for connection therewith for transmitting lifting forces to articles or groups of articles
    • B66C1/10—Load-engaging elements or devices attached to lifting or lowering gear of cranes or adapted for connection therewith for transmitting lifting forces to articles or groups of articles by mechanical means
    • B66C1/12—Slings comprising chains, wires, ropes, or bands; Nets
    • 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
    • F16H7/06—Gearings for conveying rotary motion by endless flexible members with chains

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  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Transmission Devices (AREA)

Abstract

A chain structure and a chain block including the same are disclosed. A chain structure according to an embodiment of the present invention includes a plurality of chain units connected to each other, wherein neighboring first chain units and second chain units arbitrarily selected among the plurality of chain units partially overlap each other in the thickness direction, Wherein the first chain unit and the second chain unit each have a first through hole and a second through hole through which the pin passes, and the first through hole and the second through- Wherein a first key and a second key are formed in a line in the thickness direction when the first chain unit and the second chain unit are aligned in a longitudinal direction in a row, Wherein the pin has a first area in which the first key and a second key are inserted in a line and in which a first key groove into which the second key is inserted is formed and a second key groove adjacent to the first area and having a cross- A second region formed.

Description

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a chain structure and a chain block including the same,

The present invention relates to a chain structure and a chain block including the same.

The chain block refers to a handy simple lifting crane that lifting and lowering heavy objects. It has good portability and is easy to carry, so it is used in the job site to perform the work of raising and lowering heavy objects.

These chain blocks are also used in float production facilities such as FPSO, FLNG or general ships. When the hull is moved in the process of lifting the heavy object with the chain block, the heavy object supported by the chain moves and there is a risk of injury to the operator.

Patent Registration No. 10-1269636 (May 30, 2013)

Embodiments of the present invention provide a chain structure capable of performing a safe operation and a chain block including the chain structure.

According to an aspect of the present invention, there is provided a chain unit comprising a plurality of chain units interconnected with each other, wherein a neighboring first chain unit and a second chain unit arbitrarily selected among the plurality of chain units are partially overlapped with each other in the thickness direction, Wherein the first chain unit and the second chain unit each have a first through hole and a second through hole through which the pin passes, respectively, and the first through hole and the second through hole have the same cross sectional area A first key and a second key that are aligned in the thickness direction are formed when the first chain unit and the second chain unit are aligned in a longitudinal direction in a row, A first key groove in which the first key and the second key are aligned in a row is formed, and a second key groove adjacent to the first region and having a larger cross-sectional area than the first key groove is formed Including a second region, a chain structure may be provided.

Wherein the pin is operable in a fixed mode and a rotational mode, wherein in the fixed mode, the first region is disposed in the first through hole and the second through hole and the second region of the pin is exposed to the outside, The first key and the second key are inserted into the first key groove, and in the rotation mode, a part of the first region of the pin is exposed to the outside and the remainder of the first region is disposed in the first through hole Wherein the second region of the pin is disposed in the second through hole and the first chain unit and the second chain unit are aligned in a longitudinal direction of the chain unit in the fixed mode of the pin And the first chain unit and the second chain unit can be mutually rotatable in the range of the second keyway in the rotation mode of the pin.

According to another aspect of the present invention, there is provided an operating chain comprising: An operating rotary body rotating in engagement with the operating chain; A pulling rotating body which rotates by receiving a rotating force of the operating rotating body; And a chain structure according to claim 2 which is engaged with the pulling rotation body, wherein the pin located in the engaged state, which is engaged with the pulling rotation body of the chain structure and rotates together with the pulling rotation body, Mode, and the pin, which is located in the released area of the chain structure in the engaged state, operates in the fixed mode.

Wherein the chain block further comprises a pull frame for rotatably supporting the pull rotating body, a first switch member for converting the pin from the fixed mode to the rotation mode is formed at one side of the pull frame, And a second switching member for switching the pin from the rotation mode to the fixed mode may be formed on the other side of the traction frame.

Wherein one end of the pin is formed with a first contact region adjacent to the second region of the pin and in contact with the first switching member, and the other end of the pin is adjacent to the first region of the pin, A second contact region is formed in contact with the second switching member, and the first switching member induces the first contact region to descend in the course of the introduction of the chain structure into the traction frame, And the second switching member is guided to move down the second contact region in the process of discharging the chain structure from the pull frame to move the second region to the second through- And a second inclined surface pushing out from the hole can be formed.

The first chain unit and the second chain unit may each have a gear tooth, and the pulling rotation body may have a tooth groove engaged with the gear tooth.

According to an embodiment of the present invention, it is possible for the chain structure to operate in a fixed mode or a rotating mode in which the pins interconnecting adjacent chain units are operated, and in the pinned mode, the chain units remain aligned in the longitudinal direction A safer operation can be performed when it is used for lifting heavy objects.

1 is a view illustrating a chain structure according to an embodiment of the present invention,
Fig. 2 is a view taken along arrow line AA in Fig. 1,
3 is a sectional view of a first through hole and a second through hole formed in the first chain unit and the second chain unit according to an embodiment of the present invention,
4 is a view showing a pin according to an embodiment of the present invention,
Fig. 5 is a cross-sectional view taken along the line BB of Fig. 4,
6 is a diagram showing the relationship between the first key and the second key, the first keyway and the second keyway in the fixed mode of the pin,
7 is a diagram showing the relationship between the first key and the second key, the first keyway and the second keyway in the rotation mode of the pin,
8 and 9 are views showing a state in which the first chain unit and the second chain unit rotate with each other when the pin operates in the rotation mode,
10 is a front view of a chain block according to an embodiment of the present invention,
11 is a side view of the chain block of Fig. 10,
12 and 13 are views showing a chain structure included in a chain block according to an embodiment of the present invention,
FIG. 14 is a view showing a structure in which the chain structure of FIG. 13 is engaged with a pulling rotation body,
FIG. 15 is a view for explaining a process in which a pin located in a partial area of the chain structure of FIG. 12 is switched from a fixed mode to a rotation mode,
FIG. 16 is a view for explaining a process of shifting a pin located in a partial area of the chain structure of FIG. 12 from the rotation mode to the fixed mode.

BRIEF DESCRIPTION OF THE DRAWINGS The present invention is capable of various modifications and various embodiments, and specific embodiments are illustrated in the drawings and described in detail in the detailed description. It is to be understood, however, that the invention is not to be limited to the specific embodiments, but includes all modifications, equivalents, and alternatives falling within the spirit and scope of the invention. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, the present invention will be described in detail with reference to the accompanying drawings.

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENT Hereinafter, embodiments of the present invention will be described in detail with reference to the accompanying drawings. Referring to the accompanying drawings, the same or corresponding components are denoted by the same reference numerals, do.

FIG. 1 is a view showing a chain structure according to an embodiment of the present invention, and FIG. 2 is a view taken along the line A-A in FIG. 1 and 2, the X axis direction indicates the thickness direction of the chain unit 110, the Y axis direction indicates the width direction of the chain unit 110, and the Z axis indicates the length direction of the chain unit 110 .

Referring to FIGS. 1 and 2, the chain structure 100 according to the present embodiment includes a plurality of chain units 110 interconnected with each other.

In the following description of the chain structure 100 according to the present embodiment, for convenience of explanation, a neighboring chain unit 110 arbitrarily selected from a plurality of chain units 110 is referred to as a first chain unit 111, The chain unit 113 is referred to as a chain unit 113, and the description thereof is equally applied to other chain units 110.

The first chain unit 111 and the second chain unit 113 may have the same shape.

The first chain unit 111 and the second chain unit 113 are partly overlapped with each other in the thickness direction of the first chain unit 111 and the second chain unit 113 and are fastened by the pin 120.

3 is a cross-sectional view of a first through hole and a second through hole formed in the first chain unit and the second chain unit according to the embodiment of the present invention. 1 to 3, a first through-hole 112 through which a pin 120 passes is formed in a first chain unit 111, and a pin 120 penetrates through a second chain unit 113 A second through hole 114 is formed.

A first key groove 1211 extending in the thickness direction of the first chain unit 111 is formed in the first through hole 112.

A second key groove 1221 having the same cross-sectional area as the first key groove 1211 and extending in the thickness direction of the second chain unit 113 is formed in the second through hole.

The first key groove 1211 and the second key groove 1221 are aligned in the thickness direction when the first chain unit 111 and the second chain unit 113 are aligned in the longitudinal direction.

FIG. 4 is a view showing a pin according to an embodiment of the present invention, and FIG. 5 is a cross-sectional view taken along line B-B and C-C in FIG. Referring to FIGS. 3, 4 and 5, the fin 120 includes a first region 121 and a second region 122. The second region 122 is adjacent to the first region 121.

The first key 121 is formed with a first key 1121 and a first key groove 1211 into which the second key 1141 is inserted. The first keyway 1211 may extend the entire length of the first key 1121 and the second key 1141.

A second key groove 1221 having a larger cross-sectional area than the first key groove 1211 is formed in the second region 122. The second keyway 1221 can be extended by the length of the second key 1141.

The pin 120 is operable in a fixed mode and a rotational mode.

6 is a diagram showing the relationship between the first key and the second key and the relationship between the first keyway and the second keyway in the fixed mode of the pin. 1 and 2 show a state in which the first chain unit 111 and the second chain unit 113 are aligned in the longitudinal direction when the pin 120 operates in the fixed mode.

Referring to FIGS. 1, 2, 4, and 6, when the pin 120 operates in the fixed mode, the first region 121 contacts the first through hole 112 and the second through hole 114 And the second region 122 is exposed to the outside. At this time, the first key 1121 and the second key 1141 are inserted into the first key groove 1211 formed in the first region 121. In this case, the first chain unit 111 and the second chain unit 113 are aligned in a line in the longitudinal direction thereof. In other words, the first chain unit 111 and the second chain unit 113 are limited in the rotational degree of freedom with respect to the thickness direction axis thereof.

FIG. 7 is a diagram showing the relationship between the first key and the second key, the first keyway and the second keyway in the rotation mode of the pin, and FIGS. 8 and 9 are views showing the relationship between the first chain unit and the second keyway when the pin operates in the rotation mode. 2 is a view showing a state in which the chain units mutually rotate.

Referring to FIGS. 4, 7, 8 and 9, when the pin 120 operates in the rotation mode, a part of the first region 121 is exposed to the outside and the remaining portion of the first region 121 is exposed. Hole 112 and the second region 122 of the pin 120 is disposed in the second through-hole 114. The second through- At this time, the first key 1121 is inserted into the first key groove 1211 of the first region 121 disposed in the first through hole 112, and the second key 1141 is inserted into the second region 122 And is inserted into the second key groove 1221 formed.

At this time, the cross-sectional area of the second key 1141 is smaller than the cross-sectional area of the second key groove 1221, so that the second key 1141 can move in the second key groove 1221. Accordingly, the first chain unit 111 and the second chain unit 113 are mutually rotatable in the range of the second keyway 1221.

The chain structure 100 thus operated maintains a state in which the chain units 110 are aligned in the longitudinal direction in a line when the pins 120 are operated in the fixed mode, It is possible to limit the rotational motion of the heavy object, so that a safer operation can be performed when the heavy object is lifted.

FIG. 10 is a front view of a chain block according to an embodiment of the present invention, and FIG. 11 is a side view of the chain block of FIG.

10 and 11, the chain block 1 includes an operating chain 10, an operating rotator 30, a traction rotating body 50, and a chain structure 100 '.

The operating chain 10 may have a conventional chain structure.

The operating rotary body (30) rotates in engagement with the operating chain (10). The operating rotary body 30 may have a conventional sprocket shape. The operating rotary body (30) is rotatably supported by the operating frame (40).

The pulling rotating body 50 rotates by receiving the rotating force of the operating rotating body 30. The pulling rotation body 50 is rotatably supported on the pulling frame 60. A hook 71 may be provided on the upper side of the draw frame 60.

When the operator pulls the operating chain 10, the mechanism in which the operating rotator 30 rotates and thus the tow rotator 50 rotates can follow the mechanism of a conventional chain block.

The chain structure 100 'is engaged with the pulling rotation body 50. The chain structure 100 'engaged with the pulling rotation body 50 is pulled toward or away from the pulling rotation body 50 when the pulling rotation body 50 is rotated. The mechanism by which the chain structure 100 'and the traction rotary body 50 are engaged will be described later.

A hook 72 is provided at an end of the chain structure 100 '.

12 and 13 are views showing a chain structure included in a chain block according to an embodiment of the present invention. Referring to FIGS. 12 and 13, the chain structure 100 'according to the present embodiment includes all the features of the chain structure 100 shown in FIGS. 1 and 2. Further, the chain structure 100 'according to the present embodiment has a structure to be engaged with the pulling rotation body 50.

The chain structure 100 'includes a plurality of chain units 110 interconnected with each other.

The adjacent first chain unit 111 and the second chain unit 113 arbitrarily selected from the plurality of chain units 110 are partially overlapped with each other in the thickness direction (X-axis direction) of the chain unit 110, ')

The pin 120 'further includes a first contact region 124 and a second contact region 125 in the structure of the pin 120 shown in FIG. Referring to Fig. 12, the first contact region 124 is adjacent to the second region 122 as a portion contacting the first switching member 61 described later, and forms one end of the pin 120 '.

The second contact region 125 is adjacent to the first region 121 as a portion in contact with the second switching member 62, which will be described later, and forms the other end of the pin 120 '.

The gear teeth 130 are formed in the first chain unit 111 and the second chain unit 113, respectively. The gear teeth 130 may be formed on one side in the width direction (Y axis direction) of the first chain unit 111 and the second chain unit 113.

The gear teeth 130 of the chain structure 100 'are inserted into the tooth grooves 51 formed on the outer circumferential surface of the traction rotor 50 as shown in Fig. 14 is a view showing a structure in which the chain structure of Fig. 13 is engaged with a traction rotary body, in which a part of a traction rotary body and a chain structure are shown.

The chain structure 100 'is engaged with the pulling rotation body 50 in such a manner that the gear teeth 130 formed on the chain structure 100' are inserted into the tooth slots 51 formed in the pulling rotation body 50. Therefore, when the pulling rotation body 50 is rotated, the chain structure 100 'can be moved together with the pulling rotation body 50.

11 and 12, a pin 120 'located in the engaged state rotating with the pulling rotation body 50 in engagement with the pulling rotation body 50 of the chain structure 100' The pin 120'in the interior of the frame 60 operates both in rotation and the pin 120'is positioned in the released area of the chain structure 100'in the engaged state, The externally positioned pin 120 'operates in a fixed mode.

FIG. 15 is a view for explaining a process of shifting a pin located in a partial region of the chain structure of FIG. 12 from a fixed mode to a rotation mode, FIG. 16 is a view for explaining a case where a pin located in a partial region of the chain structure of FIG. And a process of switching to the fixed mode.

15 and 16, a first switch member 61 is formed on one side of the draw frame 60 and a second switch member 62 is formed on the other side of the draw frame 60. The first switching member 61 switches the pin 120 'from the fixed mode to the rotating mode, and the second switching member 62 switches the pin 120' from the rotating mode to the fixed mode.

A first inclined plane 611 is formed in the first switching member 61 and a second inclined plane 621 is formed in the second switching member 62.

15, the first inclined surface 611 of the first switchable member 61 is configured to guide the first contact area 124 downward in the course of the chain structure 100 ' And the second area 122 is pushed into the second through hole 114. [ When the pin 120 'is switched to the rotation mode, the corresponding neighboring chain units 110 can rotate with each other and engage with the pulling rotation body 50 (not shown).

16, the second inclined surface 621 of the second switchable member 62 is configured to guide the second contact area 125 down along the process of discharging the chain structure 100 'from the draw frame 60 So that the second region 122 is pushed out of the second through hole 114. When the pin 120 'is switched to the fixed mode, the neighboring chain units 110 corresponding to the pins 120' are maintained aligned in the longitudinal direction.

The chain block 1 according to the present embodiment can maintain the state that the portions of the chain structure 100 'exposed to the outside of the draw frame 60 are aligned in a line in the longitudinal direction of the chain unit 110, A safe operation can be performed in the process of lifting.

While the present invention has been particularly shown and described with reference to exemplary embodiments thereof, many modifications and changes may be made by those skilled in the art without departing from the spirit and scope of the invention as defined in the appended claims. The present invention can be variously modified and changed by those skilled in the art, and it is also within the scope of the present invention.

1: Chain block
10: Operation Chain
30: Operation rotating body
40: Operation frame
50: All of the pulling wheels
60: tow frame
100: chain structure
110: chain unit
111: First chain unit
112: first through hole
1121: First key
113: Second chain unit
114: second through hole
1141: Second key
120: pin
121: first region
1211: first keyway
122: second region
1221: second keyway

Claims (6)

Comprising a plurality of interconnected chain units,
The adjacent first chain unit and the second chain unit arbitrarily selected among the plurality of chain units are partially overlapped with each other in the thickness direction and fastened by the pins,
Wherein the first chain unit and the second chain unit each have a first through hole and a second through hole through which the pin passes,
Wherein the first through-hole and the second through-hole have the same cross-sectional area and extend in the thickness direction, and when the first and second chain units are aligned in a longitudinal direction, A first key and a second key are formed,
Wherein the pin has a first region formed with a first key groove and a second key groove with a larger cross-sectional area than the first key groove, the first region having the first key and the first key groove into which the second key is inserted, 2 < / RTI > region. The method of claim 1,
The pin is operable in a fixed mode and a rotational mode,
In the fixed mode, the first region is disposed in the first through hole and the second through hole, and the second region of the pin is exposed to the outside, and the first key and the second key are disposed in the first key groove Respectively,
Wherein a portion of the first region of the pin is exposed to the outside and the remainder of the first region is disposed in the first through hole and the second region of the pin is disposed in the second through hole in the rotation mode,
Wherein the first chain unit and the second chain unit comprise:
Maintaining a state of being aligned in a line in the longitudinal direction of the chain unit in the fixed mode of the pin,
Wherein the first chain unit and the second chain unit are mutually rotatable in the range of the second keyway in the rotation mode of the pin. Operating chain;
An operating rotary body rotating in engagement with the operating chain;
A pulling rotating body which rotates by receiving a rotating force of the operating rotating body; And
The chain structure according to claim 2, wherein the chain structure is engaged with the pulling rotation body,
The pin located in the engaged state, which rotates together with the pulling rotation body, engaged with the pulling rotation body of the chain structure, operates in the rotation mode,
Wherein the pin of the chain structure located in the released region in the engaged state operates in the fixed mode. The method of claim 3,
Further comprising a traction frame rotatably supporting the traction body,
A first switching member is formed at one side of the towing frame for switching the pin from the fixed mode to the rotating mode,
And a second switching member for switching the pin from the rotation mode to the fixed mode is formed on the other side of the towing frame. 5. The method of claim 4,
Wherein one end of the fin is formed with a first contact area adjacent to the second area of the pin and in contact with the first switchable member,
A second contact region adjacent to the first region of the pin and contacting the second switching member is formed at the other end of the pin,
Wherein the first switching member is formed with a first inclined surface for guiding the first contact region to ride down during the introduction of the chain structure into the pull frame and pushing the second region into the second through hole,
And a second inclined surface is formed on the second switching member to guide the second contact region downward in the process of discharging the chain structure from the pull frame to push the second region out of the second through hole. block. The method of claim 3,
Wherein gear teeth are formed in the first chain unit and the second chain unit, respectively,
And a tooth groove engaging with the gear teeth is formed in the pulling rotation body.
KR1020150130666A 2015-09-16 2015-09-16 Chain structure and chain block including the same KR101701754B1 (en)

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Application Number Priority Date Filing Date Title
KR1020150130666A KR101701754B1 (en) 2015-09-16 2015-09-16 Chain structure and chain block including the same

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Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR19980042426U (en) * 1996-12-24 1998-09-25 김종진 Chain Link Dismantling Device
KR100460521B1 (en) * 2004-05-13 2004-12-10 김두진 Combination structure upholding apparatus using protecting cable
KR20100111191A (en) * 2009-04-06 2010-10-14 삼성중공업 주식회사 Unit for preventing breakaway and moving apparatus having the same
KR101269636B1 (en) 2012-04-09 2013-05-30 (주)동우금속 The chain block with a built-in gear

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR19980042426U (en) * 1996-12-24 1998-09-25 김종진 Chain Link Dismantling Device
KR100460521B1 (en) * 2004-05-13 2004-12-10 김두진 Combination structure upholding apparatus using protecting cable
KR20100111191A (en) * 2009-04-06 2010-10-14 삼성중공업 주식회사 Unit for preventing breakaway and moving apparatus having the same
KR101269636B1 (en) 2012-04-09 2013-05-30 (주)동우금속 The chain block with a built-in gear

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