KR20160075423A - secure foothold for a ladder and ladder Including the secure foothold - Google Patents

secure foothold for a ladder and ladder Including the secure foothold Download PDF

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Publication number
KR20160075423A
KR20160075423A KR1020160071442A KR20160071442A KR20160075423A KR 20160075423 A KR20160075423 A KR 20160075423A KR 1020160071442 A KR1020160071442 A KR 1020160071442A KR 20160071442 A KR20160071442 A KR 20160071442A KR 20160075423 A KR20160075423 A KR 20160075423A
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KR
South Korea
Prior art keywords
ladder
moving
fixed
unit
pulley
Prior art date
Application number
KR1020160071442A
Other languages
Korean (ko)
Inventor
성판원
성덕성
Original Assignee
성판원
성덕성
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 성판원, 성덕성 filed Critical 성판원
Priority to KR1020160071442A priority Critical patent/KR20160075423A/en
Publication of KR20160075423A publication Critical patent/KR20160075423A/en

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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B66—HOISTING; LIFTING; HAULING
    • B66D—CAPSTANS; WINCHES; TACKLES, e.g. PULLEY BLOCKS; HOISTS
    • B66D1/00—Rope, cable, or chain winding mechanisms; Capstans
    • B66D1/02—Driving gear
    • B66D1/04—Driving gear manually operated
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B66—HOISTING; LIFTING; HAULING
    • B66D—CAPSTANS; WINCHES; TACKLES, e.g. PULLEY BLOCKS; HOISTS
    • B66D1/00—Rope, cable, or chain winding mechanisms; Capstans
    • B66D1/28—Other constructional details
    • B66D1/30—Rope, cable, or chain drums or barrels
    • E—FIXED CONSTRUCTIONS
    • E06—DOORS, WINDOWS, SHUTTERS, OR ROLLER BLINDS IN GENERAL; LADDERS
    • E06C—LADDERS
    • E06C7/00—Component parts, supporting parts, or accessories
    • E06C7/08—Special construction of longitudinal members, or rungs or other treads
    • E—FIXED CONSTRUCTIONS
    • E06—DOORS, WINDOWS, SHUTTERS, OR ROLLER BLINDS IN GENERAL; LADDERS
    • E06C—LADDERS
    • E06C7/00—Component parts, supporting parts, or accessories
    • E06C7/08—Special construction of longitudinal members, or rungs or other treads
    • E06C7/082—Connections between rungs or treads and longitudinal members
    • E06C7/083—Bracket type connection
    • E—FIXED CONSTRUCTIONS
    • E06—DOORS, WINDOWS, SHUTTERS, OR ROLLER BLINDS IN GENERAL; LADDERS
    • E06C—LADDERS
    • E06C7/00—Component parts, supporting parts, or accessories
    • E06C7/12—Lifts or other hoisting devices on ladders
    • E—FIXED CONSTRUCTIONS
    • E06—DOORS, WINDOWS, SHUTTERS, OR ROLLER BLINDS IN GENERAL; LADDERS
    • E06C—LADDERS
    • E06C7/00—Component parts, supporting parts, or accessories
    • E06C7/16—Platforms on, or for use on, ladders, e.g. liftable or lowerable platforms

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Ladders (AREA)

Abstract

The present invention relates to a safety foothold for a ladder and a ladder comprising the same. The safety foothold for a ladder comprises: a rectangular frame-shaped moving unit into which a ladder is inserted; a step unit which vertically rotates, has a latch groove in a back side, is hinge-coupled to a front-end of the moving unit, and is horizontal after passing through two horizontal members adjacent to the ladder when rotating; a rotary latch structure latch unit hinge-coupled to a back side of the moving unit to rotate and be latched with the latch groove of the step unit when fixating the horizontal step unit; a pulley unit comprising a fixated pulley fixated to an upper side of the ladder and a pulley rope of which one end is fixated to the back side of the moving unit and hung on the fixated pulley; a tightening unit which is formed near the moving unit and fixates the moving unit by pressurizing the ladder by making a tightening unit rotated when rotating a tightening handle. The safety foothold for a ladder can be used by drawing out the pulley rope or directly moving the moving unit while preventing the step unit from being hooked by the horizontal members, fixating the moving unit using the tightening unit, rotating the step unit to be horizontal and fixating the step unit with the latch unit.

Description

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a ladder safety ladder and a ladder including the safety ladder,

The present invention relates to a safety footrest for a ladder and a ladder including the safety footrest, wherein the safety footrest for a ladder includes: a moving part of a rectangular frame structure into which a ladder is inserted; A tread part having a tread structure rotatable in a vertical direction and having a latching groove formed on a rear side thereof and hinged to a leading end side of the moving part in the vicinity of the middle and passing through between adjacent two transverse members of the ladder during rotation; And a hook portion which is hinged to the rear side of the moving portion and which is engaged with the latching groove of the step portion when the horizontal stepped portion is fixed while fixing the step portion in the rotational hooking structure so that the step portion is not caught by the lateral member of the ladder, The present invention relates to a safety foot which is used by a user to move a moving part in which a ladder is inserted to a tread height and then rotates the foot so as to be horizontal and fixes the foot to a hanging part and uses the safety foot.

Generally, a ladder is a structure in which a plurality of transverse members, which become a foot plate between two elongate longitudinal members, are assembled at a certain interval, It is intended to carry out any work in a state of being elevated or elevated in a certain place.

In this case, when the ladder is moved to a height, it is necessary to work on the lateral member of the ladder having a short width of the ladder. In this case, the user may be carelessly lost by the external force such as wind, There is a great risk of falling due to the shaking of the ladder or the ladder.

For example, in Korean Utility Model Laid-Open Publication No. 2013-0006522, a pair of fixed frames formed with hooks bent at an upper end in the shape of "∩" so as to be able to hang on the transverse of the vertical ladder consigned to the vertical ladder; A pair of support frames whose lower ends are sloped and connected to the lower portion of the fixed frame so as to support a load applied to the work footrest; And a work lowering member which is fixed to the upper portion of the support frame by a lower surface supported by the lower frame, and a "vertical ladder operation footrest"

In another example, in Korean Utility Model Registration No. 480473, a connecting member rotatably fixed to a vertical ladder; And a platform member coupled to an end of the connecting member and being folded at the vertical ladder according to a rotating direction of the connecting member or used for unfolding from the vertical ladder, And a plurality of step members that are vertically spaced apart from each other between the pair of frames, wherein the connecting member is configured such that one end of the connecting member is rotatable And the other end portion is fixed to the platform member, and one end portion of the connecting member is provided with a protruding member protruding outwardly by at least one or more outwardly, and the protruding member is folded in the pair of frames When the connecting member is unfolded from the pair of frames, And a fixing member which is formed to support a load acting on the platform member and is supported by a pair of frames and is interposed between one end of the connecting member and the pair of frames, Quot; a vertical ladder and a folding platform for vertical ladders ", which is a bolt which is fastened through one end and a pair of frames.

Public number / date 2020130006522 (November 13, 2013) Registration number / date 2004804730000 (2016.05.23)

However, in the case of a scaffold which is fixed to a ladder by a "vertical ladder operation scaffold" of the domestic utility model publication No. 2013-0006522 or similar structure, when the scaffold is fixed according to the working conditions, the scaffold is fixed again, In addition, in the case of the "vertical ladder work footrest ", not only is the work to be fixed, but also the support frame hinged to the fixed frame is required to support the work treading member. In this case, due to the hinged structural characteristics, There is a risk of breakage, and there is a problem that if it breaks, it leads to human accidents.

And a vertical ladder including the folding platform for vertical ladders and the vertical ladder including the same, and a ladder in which a plurality of ladders such as a folding flat plate are integrally joined together, such as a ladder, in which a folding platform is integrally formed And a plurality of folding platforms are combined to increase the manufacturing cost.

SUMMARY OF THE INVENTION Accordingly, the present invention has been made keeping in mind the above problems occurring in the prior art, A tread plate or a stepped frame structure that rotates in the vertical direction and has a latching groove formed on the rear side and hinged to the front side of the moving part in the vicinity of the middle to pass through between adjacent two transverse members of the ladder, ; And a hook portion which is hinged to the rear side of the moving portion and which is engaged with the latching groove of the step portion when the horizontal stepped portion is fixed while fixing the step portion in the rotational hooking structure so that the step portion is not caught by the lateral member of the ladder, When the user moves the moving part in which the ladder is inserted to the tread height, when the staple part is rotated horizontally and the staple part is straddled, the safety footrest for the ladder is firmly fixed.

The moving part has two left and right side portions at a distance in contact with the side surface of the ladder and a front part and a rear part with a wider width than the thickness of the ladder; The two right and left side portions are joined to each other by a roller engagement plate having at least two rollers joined at a predetermined height interval and having a plate structure longer than the height of the bearing or the bottom portion on each inner surface, Projecting upwardly and hinged to the step portion; The front step portion of the step portion is formed to be wider than the gap between the two lateral members of the ladder so that the vertical movement of the moving portion is smooth and the rotation of the step portion is horizontal, Thereby preventing rotation.

It is also possible to include a throttle portion including a pulley portion capable of moving the moving portion upward to facilitate movement of the moving portion and capable of pressing the side surface of the ladder at the side of the moving portion by use of the fastening handle, .

As described above, according to the present invention, there is provided a tread structure comprising: a moving part of a rectangular frame structure; a tread part of a tread structure which is hinged to the moving part front side and rotates in a vertical direction; The moving part having the ladder inserted therein is moved to the tread height by the user so that the tread is not caught by the transverse member of the ladder when using the tread, Therefore, the user can safely and comfortably secure a wide space at a certain height of the ladder, thereby improving the stability of the operation.

In addition, since the bearing or the roller coupling plate is formed on the inner surface of the moving part to reduce the friction between the moving part and the ladder to smooth up and down movement, the slope of the moving part is unintentionally tilted by the roller coupling plate longer than the height And the front end of the moving part hinged to the step portion is protruded upward while being protruded upward so as to be prevented from being hindered by the moving portion during rotation so that the step portion is horizontal and the front side of the step portion is formed wider than the width of the ladder, There is an effect that the problem that the inconvenience of the use of the safety foot plate is generated can be solved in advance by avoiding rotation between spaces under the additional moving part.

In addition, since the pulley portion is constituted, the upward movement of the moving portion is facilitated, and the fastening portion is constituted, so that the moving portion can be fixed more strongly to the fixed portion and the moving portion fixed to the hook portion before rotating to be horizontal.

1 is a perspective view of a ladder including a safety footrest for a ladder according to an example of the present invention;
2 is an exploded perspective view of a safety footrest for a ladder according to an example of the present invention.
3 to 5 are perspective views illustrating the use of a safety footrest for a ladder according to an example of the present invention;
6 is a side cross-sectional view of a safety footrest for a ladder according to an example of the present invention.
7 is a use side view of a safety footrest for a ladder according to an example of the present invention.
8 to 10 are perspective views of a safety footrest for a ladder according to another example of the present invention.

The present invention relates to a safety footrest for a ladder and a ladder including the safety footrest, wherein the safety footrest for a ladder includes: a moving part of a rectangular frame structure into which a ladder is inserted; A tread part having a tread structure rotatable in a vertical direction and having a latching groove formed on a rear side thereof and hinged to a leading end side of the moving part in the vicinity of the middle and passing through between adjacent two transverse members of the ladder during rotation; A hook which is hinged to the rear side of the moving part in a rotating hook structure and rotates to engage with the engaging groove of the step when the horizontal step is fixed; A fixed pulley fixed to the upper side of the ladder, a pulley portion having one end fixed to the tail portion of the movable portion and including a pulley string caught by the fixed pulley; And a tightening portion which is formed on the side of the moving portion and rotates the fastening handle to press the ladder to fix the moving portion when the fastening handle is rotated so that the pulley is pulled in the state in which the standing portion is not caught by the horizontal member of the ladder, And a ladder comprising the safety footrest. The safety footrest according to claim 1, wherein the safety footrest is provided with a safety footrest.

The ladder safety footrest 100 of the present invention includes a moving unit 110, a stitching unit 120, a hanger unit 130, a pulley unit 140, and a tightening unit 150, Then,

The moving part 110 has a rectangular frame structure in which the ladder 20 is inserted into the inside of the ladder 20 and includes two left and right side portions 111 spaced from each other in contact with the left and right longitudinal members 21 of the ladder 20, (112) and a back part (113) which are wider than the front and back thicknesses of the front and rear parts.

At this time, the left and right two side portions 111 constitute a bearing 116 on each inner surface. The bearing 116 is preferably a ball bearing but may be a roll bearing.

Each of the two side portions 111 has a hinge hole 114 for protruding upward from the front portion 112 so as to protrude forward from the front portion 112 to form a hinge hole 114 for hinge connection with the step 120, And a hinge hole 115 for hinge connection with the part 130 is formed.

When the pulley 140 is included in the ladder safety foot 100, as shown in FIG. 8, the pulley 117, to which one end of the pulley 143 is fixed, .

10, the roller coupling plate 119 having a plate structure longer than the height of the side portion 111 is coupled to the inside of the two side portions 111 of the moving portion 110, It is preferable that the rollers 118 formed on the plate 119 are at least two in height and the interval between the two rollers 118 formed at the uppermost and lowermost ends is larger than the height of the bottom portion 111.

At this time, the rollers 118 are rotated in contact with the outer surfaces of the two longitudinal members 21 on the left and right sides of the ladder 20, and the engagement between the roller coupling plate 119 and the side portion 111 is rotated in the vertical direction, It is preferable that the engagement between the roller coupling plate 119 and the roller 118 is also hinged so as to be rotatable in the vertical axis direction while being coupled to the roller coupling plate 119 , So that the roller 118 is rotated to correspond to the inclination of the ladder 20.

Next, the step 120 is a tread plate or a stepping frame structure that rotates in the vertical direction. The tread plate 120 has a front leading part 122 and a back trailing part 122 And a hinge hole 121 is formed on both sides between the hinge-connected front and rear hinge portions 122 and 123 and the hinge hole 114 and the step portion 123 of the moving portion 110, And a hinge pin 124 corresponding to the hinge hole 121 of the hinge 120.

At this time, the front step portion 122 of the step 120 is formed to be wider than the interval between the left and right longitudinal members 21 of the ladder 20, and the rear step portion 123 of the step portion 120 is formed When the backrest 123 is rotated to be horizontal with respect to the ground while the latching grooves 125 or the hooks for hooking the hooking portions 130 are formed on the underside of the ladder 20, To be able to be formed.

The hanger part 130 has a hinge ring part 131 hinged to the hinge hole 115 on the front side after the moving part 110 and a hinge part 131 extending to the hinge ring part 131, And most of the hooks 125 are hooked on the hooks 125 of the step 120 when the hook 120 is fixed.

The hanger part 130 is preferably a rotating hanger structure in which the hinge ring part 131 is integrally formed at the right and left sides of the hanging part 132 and rotates vertically. 132 may be formed as a hanger part 130 of a rotating hanger structure rotating horizontally.

8, the pulley portion 140 includes a fixed bracket 142 fixed to the upper side member 22 of the ladder 20 and a fixed pulley 142 fixed to the fixed bracket 142 141 and a pulley string 143 engaged with the fixed pulley 141.

9, the throttle portion 150 is formed on at least one of two left and right side portions 111 of the moving part 110 of the rectangular frame structure, and when the ladder 20 is rotated, And a fastening handle 152 connected to the fastener 151 for rotating the fastener 151.

The ladder 20 including the ladder safety foot 100 composed of the parts described above is inserted into the moving part 110 of the ladder safety foot 100 so that a normal general ladder 20 is inserted The ladder 20 may be coupled or pre-coupled to the upper and lower sides of the ladder 20 so as to prevent the moving part 110 from being separated from the ladder 20. The left and right vertical parts 21 of the ladder 20 Adjustable height adjustment configurations can be configured to match different elevations of the ground footprint.

The ladder safety footrest 100 and the ladder 20 including the safety footrest for ladders constructed as described above can be constructed in such a manner that the step 120 is formed on the lateral member 22 of the ladder 20, The user moves the moving part 110 in which the ladder 20 is inserted into the inside of the ladder 20 so that the ladder 20 is not caught by the user and then rotates the ladder 120 to be horizontal as shown in FIG. As shown in the drawing, the hanging part 130 is fixed by hanging the step 120.

At this time, as shown in FIG. 8, the moving part 120 can be moved upward by pulling the pulley string 143 by using the pulley part 140, and the step part 120 can be moved by the hook part 130 9, the tightening knob 152 is turned to fasten the vertical member 21 of the saddle 20 with the fastener 151 to fix the moving part 120, It is possible to securely fix the step 120 by using the tightening part 150 after fixing the step 120 to the part 130.

As described above, according to an embodiment of the present invention, there is provided a mobile terminal including a moving part 110 having a rectangular frame structure, a step part 120 having a tread structure hinged to the leading end side of the moving part 110 and rotating in a vertical direction, The user can easily apply to the conventional ladder 20 because the hanger 130 hinged to the ladder 20 and hinged to the ladder 20 and fixing the latching groove 125 of the step 120 when the lid 120 is rotated. It is possible to secure a wide space at a certain height in a safe and comfortable manner, thereby enhancing the stability of the work.

The bearing portion 116 or the roller coupling plate 119 is formed on the inner surface of the moving portion 110 to reduce friction between the moving portion 110 and the ladder 20 to smooth up and down movement, The leading end of the moving part 110 which is hinged to the step 120 prevents the inclination of the moving part 110 by the roller engaging plate 119 which is longer than the height of the moving part 110, The leading end of the step 120 is formed to be wider than the width of the ladder 20 so that the step 120 is prevented from being obstructed by the moving part 120 during rotation so that the step 120 protrudes upward, 120 are prevented from rotating between the spaces under the moving unit 110, thereby solving the problem of inconvenience of using the safety footrest 100 in advance.

In addition, since the pulley section 140 is configured to move the moving section 110 upward, the moving section 110 can be fixed and fixed before the swinging section 120 is rotated by the rotation of the swinging section 150, The moving part 110 fixed by the step 120 and the hooking part 130 can be more strongly fixed.

20: ladder 21: longitudinal member 22: lateral member
100: safety footstool 110: moving part 111:
112: front portion 113: rear portion 114, 115, 121: hinge hole
116: bearing 117: collar 118: roller
119: roller coupling plate 120: step portion 122: front step portion
123: backrest portion 124: hinge pin 125:
130: hook part 131: hinge ring part 132: most of the hook
140: pulley part 141: fixed pulley 142: fixed bracket
143: pulley cord 150: fastener 151: fastener
152: Fastening handle

Claims (6)

A moving part of a rectangular frame structure into which a ladder is inserted;
Wherein both sides of the front stepped portion and the backward stepped portion are hinged to both sides of the moving part front side so that the engaging groove or the hook is formed in the rear step portion A stepped portion that passes through between adjacent two transverse members of the ladder and becomes horizontal during the rotation;
And a hook portion which is hinged to the rear side of the moving portion in the rotating hook structure and which is engaged with the hooking groove or the hook of the step portion when the horizontal stepped portion is fixed,
Wherein the ladder is moved in a state where the ladder is not caught by the transverse member of the ladder and the ladder is inserted into the inside of the ladder after the user moves the ladder to the tread height, Scaffolding.
The method according to claim 1,
The moving part has two left and right side portions at an interval in contact with the two right and left side members of the ladder and a front side portion and a rear side portion which are wider than the front and back thicknesses of the ladder,
The two right and left side portions are formed by bearings on the inner surfaces, the respective front ends protruding upward from the front portion and hinged to the step portion;
The front step portion of the step portion is formed to be wider than the interval between the two right and left longitudinal members of the ladder,
Characterized in that the upper and lower portions of the moving portion into which the ladder is inserted are smooth and the moving portion is prevented from being engaged with the rotating portion so as to be horizontal so that the front portion is prevented from rotating between the ladder horizontal members under the moving portion. Scaffolding.
The method according to claim 1,
The moving part has a square structure with two left and right side portions of a width wider than the left and right width of the ladder and a front portion and a rear portion having a wider spacing than the front and rear thicknesses of the ladder;
The moving part has a plate structure that is longer than the height of the bottom portion at the inner sides of the two side portions, and a roller engagement plate having at least two rollers coupled with each other at a predetermined height interval,
Each roller rotates in accordance with the upward and downward movement of the moving portion in contact with the outer surfaces of the two right and left longitudinal members of the ladder,
Wherein the movable part is movable upward and downward.
The method according to claim 1,
A fixed bracket fixed to the upper side member of the ladder, a fixed pulley connected to the fixed bracket, and a pulley portion including a pulley string caught by the fixed pulley,
A string loop is formed in which one end of the pulley string is fixed to the center of the rear side after the moving part,
And the moving part is moved upward by pulling the pulley string on the side not fixed to the string hook.
The method according to claim 1,
Wherein at least one of two left and right side portions of the moving part of the rectangular frame structure includes a throttling part,
The fastening portion includes a fastening member for pressing the longitudinal member of the ladder upon rotation, and a fastening handle for rotating in connection with the fastening member,
Characterized in that the fixing member is fixed by tightening the longitudinal member of the ladder with the fastening bolt when the shifted moving part is fixed,
In the ladder,
A safety footrest for a ladder according to any one of claims 1 to 5,
Wherein the movable part is moved to a tread height by a user, and the lid is rotated to be horizontal, and the lid is fixed by hanging the lid.
KR1020160071442A 2016-06-09 2016-06-09 secure foothold for a ladder and ladder Including the secure foothold KR20160075423A (en)

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KR1020160071442A KR20160075423A (en) 2016-06-09 2016-06-09 secure foothold for a ladder and ladder Including the secure foothold

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
KR1020160071442A KR20160075423A (en) 2016-06-09 2016-06-09 secure foothold for a ladder and ladder Including the secure foothold

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Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR102228108B1 (en) * 2020-04-06 2021-03-16 주식회사 아이캠퍼 Safety apparatus for ladder
KR20210002081U (en) 2020-03-10 2021-09-23 정삼식 Ladder having safety foothold
WO2022191347A1 (en) * 2021-03-12 2022-09-15 주식회사 아이캠퍼 Safety device for ladder

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR20130006522U (en) 2012-05-03 2013-11-13 주식회사 현대미포조선 Vertical ladders and work foothold
KR200480473Y1 (en) 2014-08-21 2016-05-27 대우조선해양 주식회사 Folding platform for vertical ladder and vertical ladder having the same

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR20130006522U (en) 2012-05-03 2013-11-13 주식회사 현대미포조선 Vertical ladders and work foothold
KR200480473Y1 (en) 2014-08-21 2016-05-27 대우조선해양 주식회사 Folding platform for vertical ladder and vertical ladder having the same

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR20210002081U (en) 2020-03-10 2021-09-23 정삼식 Ladder having safety foothold
KR102228108B1 (en) * 2020-04-06 2021-03-16 주식회사 아이캠퍼 Safety apparatus for ladder
WO2021206268A1 (en) * 2020-04-06 2021-10-14 Ikamper Co., Ltd. Safety device for ladder
CN113785102A (en) * 2020-04-06 2021-12-10 伊坎珀有限公司 Safety device for ladder
US20220049550A1 (en) * 2020-04-06 2022-02-17 Ikamper Co., Ltd. Safety device for ladder
WO2022191347A1 (en) * 2021-03-12 2022-09-15 주식회사 아이캠퍼 Safety device for ladder

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