KR20160116277A

KR20160116277A - Handrail safety device and stair type movable platform

Info

Publication number: KR20160116277A
Application number: KR1020150043606A
Authority: KR
Inventors: 강봉래; 박공우; 장응윤; 채수철; 홍석준
Original assignee: 삼성중공업 주식회사
Priority date: 2015-03-27
Filing date: 2015-03-27
Publication date: 2016-10-07
Also published as: KR101672410B1

Abstract

Disclosed by the present invention are a handrail safety device and a stairs type movable worktable including the same, which ensures a safe workplace. The handrail safety device according to an embodiment of the present invention includes: a bracket which enables legs of a foldable handrail, connected with the lower part of an attachment plate through a hinge, to be drawn in or out to the internal space through an opening unit formed with the attachment plate of being attached to the lateral side of the main body of the stairs type movable worktable and first and second fixed plates of protruding from both sides of the attachment plate to the lateral side; a fixing pin which is inserted and combined with a fixing pin hole formed in the first and second fixed plates; and a fixing ring which is connected with a part bent toward the front side through a hinge at an end of the second fixed plate and has a shape in which a lower part is extended lengthily and an upper part is inclined at a predetermined angle. The upper end part of the fixing ring can be inserted into a fixing groove which is open downwards by a hanging unit included at an upper end of the first fixed plate.

Description

Technical Field [0001] The present invention relates to a handrail safety device and a step-

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a handrail safety device and a stepwise moving workbench with the same.

In general, a workbench is used to allow a worker to stand up and work when the worker has to perform work at a high place outside the normal working range. In particular, workshops are frequently used in the production sites for blocks for the construction of large structures such as ships and offshore plants, and for the production of large engines for ships.

The workbench forms a structure having a certain height by using a plurality of bars or pipes, and a step is provided by installing a plate material in a multi-layered structure on the structure so that an operator can easily ascend to a high place.

However, since the conventional workbench is a fixed structure, the working range is very narrow, so it is necessary to prepare and use the workbench for complaining work in various places. Therefore, the work is very inconvenient and the cost increases due to preparation of several workbenches there was.

In order to solve this inconvenience, a stepwise moving workbench has been developed and used.

1 is a perspective view of a conventional stepped moving workbench.

Referring to FIG. 1, a conventional step-and-movement worktable 10 includes a body 12, a stepped stalk 16, a moving wheel 14, a fixed handrail 18, and a foldable handrail 20.

Due to the nature of the moving workbench, frequent movement using the moving wheel 14 causes a lot of wobbles, and in many cases, either the left hand or the postal hand rail is used depending on the position of the block work.

Therefore, it is often the case that the foldable handrail 20 is provided and only one of the foldable handrails 20 is vertically erected in accordance with the working condition among the foldable handrails 20 installed on both sides.

The ends of the legs of the foldable handrail 20 are hinged so that they can be folded or used as required. In this case, the bracket 22 and the fixing pin 24 are used to fix the vertically erected foldable handrail 20.

The handrail legs are inserted into the U-shaped bracket 22 and the fixing pins 24 are inserted and fixed in the fixing pin holes formed on the facing surfaces of the brackets 22 facing each other to prevent the handrail legs from being tumbled to the original position do.

However, even in this case, even if the fixing means is only one, the folding type handrail 20 folded up when the fastening of the fixing pin 24 is unstable or the like is collapsed to cause a fall of a worker or a risk of a safety accident to be.

The above-described background technology is technical information that the inventor holds for the derivation of the present invention or acquired in the process of deriving the present invention, and can not necessarily be a known technology disclosed to the general public prior to the filing of the present invention.

Korean Patent Laid-open No. 10-2013-0139064 discloses a movable safety step with a suspension in connection with a stepped moving workbench.

Korean Patent Publication No. 10-2013-0139064

The present invention is to provide a safety device for a handrail which prevents the folding handrail from falling down even when block interference occurs in the vertical installation due to the working position characteristics, and a stepwise movement worktable provided with the safety device.

The present invention provides a safety device for a handrail which reduces the risk of a safety accident by preventing a collapse of a foldable handrail through a second fixing operation, and a stepped movement worktable having the same.

Other objects of the present invention will become readily apparent from the following description.

According to an aspect of the present invention, there is provided a method of manufacturing a stepped moving work table, comprising the steps of: attaching an attachment plate to a side of a body of a stepwise movement workbench; and an opening formed of a first fixation plate and a second fixation plate projecting laterally from both sides of the attachment plate, A bracket that allows the legs of the foldable handrail connected to the hinge to enter or advance into the interior space; A fixing pin inserted into the fixing pin hole formed in the first fixing plate and the second fixing plate; And a fixing ring which is hinged to a front portion of the second fixing plate at a bent portion thereof and extends downwardly and whose upper portion is inclined at a predetermined angle, Is inserted into a fixing groove opened downward by a hook provided at an upper end of the handle rail.

A weight may be additionally provided on the lower end of the fixing ring.

The fixing ring can be kept inserted into the fixing groove in normal condition.

The hook portion may have an inverted U-shape and its end may be directed toward the fixing groove so that the entrance of the fixing groove may be narrower than the inside thereof.

According to another aspect of the present invention, A moving wheel installed at a lower end of the body; A stepped stepping part installed in a multi-layered structure on an inclined front side of the body; A stationary handrail installed at a side of a lower portion of the stair footstep; A foldable handrail installed on a side of an upper portion of the stair footstep; And a handrail safety device provided in cooperation with the legs of the folding handrail so as to prevent the folding handrail from being initially more than a predetermined angle when the folding handrail is used and to be kept perpendicular to the staging footrest, A stepped moving workbench is provided.

The handrail safety device includes an attachment plate attached to a side surface of the body and an opening formed by a first fixing plate and a second fixing plate protruding sideways from both sides of the attachment plate, A bracket that allows the legs of the handrail to enter or advance into the interior space; A fixing pin inserted into the fixing pin hole formed in the first fixing plate and the second fixing plate; And a fixing ring which is hinged to a front portion of the second fixing plate at a bent portion thereof and extends downwardly and whose upper portion is inclined at a predetermined angle, And can be inserted into a fixing groove opened downward by a hook provided at an upper end of the housing.

Other aspects, features, and advantages will become apparent from the following drawings, claims, and detailed description of the invention.

According to the embodiment of the present invention, it is possible to prevent the folding handrail from falling down even when block interference occurs in the vertical installation due to the working position characteristic, and to perform a safe operation.

In addition, there is an effect that the risk of a safety accident is lowered by preventing the folding handrail from falling down through the second fixing operation.

1 is a perspective view of a conventional step-and-
2 is a perspective view of a stepped moving workbench equipped with a handrail safety device according to an embodiment of the present invention,
3 is an exploded perspective view of the handrail safety device,
4 is a view showing the operation of the handrail safety device,
5 is a front view of a stepped moving workbench.

While the invention is susceptible to various modifications and alternative forms, specific embodiments thereof are shown by way of example in the drawings and will herein be described in detail. 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.

It is to be understood that when an element is referred to as being "connected" or "connected" to another element, it may be directly connected or connected to the other element, . On the other hand, when an element is referred to as being "directly connected" or "directly connected" to another element, it should be understood that there are no other elements in between.

The terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. The singular expressions include plural expressions unless the context clearly dictates otherwise. In this specification, the terms "comprises" or "having" and the like refer to the presence of stated features, integers, steps, operations, elements, components, or combinations thereof, But do not preclude the presence or addition of one or more other features, integers, steps, operations, elements, components, or combinations thereof.

The terms first, second, etc. may be used to describe various components, but the components should not be limited by the terms. The terms are used only for the purpose of distinguishing one component from another.

Also, the terms " part, "" module," and the like, which are described in the specification, mean a unit for processing at least one function or operation, and may be implemented by hardware or software or a combination of hardware and software.

It is to be understood that the components of the embodiments described with reference to the drawings are not limited to the embodiments and may be embodied in other embodiments without departing from the spirit of the invention. It is to be understood that although the description is omitted, multiple embodiments may be implemented again in one integrated embodiment.

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Reference will now be made in detail to the embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like reference numerals refer to the like elements throughout. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, exemplary embodiments of the present invention will be described in detail with reference to the accompanying drawings. In the following description, well-known functions or constructions are not described in detail since they would obscure the invention in unnecessary detail.

FIG. 2 is a perspective view of a stepped moving workbench equipped with a handrail safety device according to an embodiment of the present invention, FIG. 3 is an exploded perspective view of the handrail safety device, and FIG. And Fig. 5 is a front view of the step-and-move moving workbench.

2 to 5 show a stepped moving work table 100, a body 112, a moving wheel 114, a stepped stool 116, a fixed type healdra 118, a foldable healdra 120, The first fixing plate 142, the second fixing plate 143, the fixing pin hole 144, the first hinge 124, the handrail safety device 130, the bracket 140, the attachment plate 141, A fixing pin 150, a hook 145, a fixing groove 146, a second hinge 164, a fixing ring 160, and a weight 164 are shown.

The safety device for the handrail of the stepwise moving workbench according to the embodiment of the present invention prevents the folding type handrail 120, which is set up for a high-altitude work, from falling over through a secondary fixing work, .

The stepped moving workbench 100 includes a body 112, a moving wheel 114, a stepped stool 116, a stationary handrail 118, a foldable handrail 120, a handrail safety device 130). The worker can move the step-and-move workbench 100 to the work site, and can perform the work required for the drying of the vessel or the like, for example.

The body 112 may be a frame that forms the entire skeleton of the workbench and may be provided in the form of a frame using a bar or a pipe. Thereby achieving weight reduction of the stepped moving workbench 100 and making it advantageous for movement. Here, the body 112 may be formed to have a structure in which a plurality of pipes are coupled and the vertical triangular column is laid down.

A moving wheel 114 is provided at the lower end of the leg of the body 112 so that the body 112 can be easily moved to a desired place. The moving wheel 114 is provided with a brake and can be fixed at the time of a high-altitude operation.

The stair footsteps 116 are a plurality of plate members arranged in a multi-layered structure in front of the slanting face of the body 112, and serve as a step for raising and lowering the worker.

The stationary handrail 118 is disposed on the side of the lower portion of the stair footrest 116 to help the operator safely lift and lower, and to prevent it from falling sideways.

The folding type handrails 120 are disposed on the side of the high-level portion of the stepped stalk 116 and are hinged to the lower ends thereof. In the elevation work, the worker is in a state in which the folding type heald drape 120 is raised, thereby becoming a side barrier, thereby preventing the worker from falling down during the work.

The handrail safety device 130 is installed at the lower end of the folding type handrail 120 so as to prevent the folding type handrail 120 from falling over more than a predetermined angle when the folding type handrail 120 is used, So that it is held perpendicular to the foot part (116).

The handrail safety device 130 includes a bracket 140 and a fixing pin 150 for vertical fixing, and a fixing ring 160 for preventing fall.

The bracket 140 is fixed to the side surface of the body 112 in correspondence with the handrail leg 122 of the folding type handrail 120. The bracket 140 is basically a plate member that is bent in a U-shape when viewed from above. The bracket 140 is a plate member protruding from the both sides of the attachment plate 141 attached to the side of the body 112 toward the outside 1 fixing plate 142 and a second fixing plate 143. The distance between the first fixing plate 142 and the second fixing plate 143 may be determined corresponding to the diameter of the handrail leg 122.

The lower end of the attachment plate 141 is connected to the end of the handrail leg 122 through the first hinge 124 so that the handrail leg 122 rotates around the first hinge 124, Or enter the space in the bracket 140 (folded state).

Fixing pin holes 144 are formed in the first fixing plate 142 and the second fixing plate 143 at positions spaced apart from the mounting plate 141 by a predetermined distance. The rod-shaped fixing pin 150 can be inserted into the fixing pin hole 144 and the vertically standing foldable helix 120 can be maintained in a vertical state through the insertion of the fixing pin 150 . Here, the position of the fixing pin hole 144 may be determined corresponding to the diameter of the handrail leg 122 from the attachment plate 141.

At the upper end of the first fixing plate 142, an inverted U-shaped hook portion 145 is provided, and a fixing groove 146 opened downward is formed. The end of the hook portion 145 is directed toward the fixing groove so that the entrance of the fixing groove 146 is narrower than the inside of the fixing groove 146 so that the upper end of the fixing ring 160 inserted therein can be prevented from being arbitrarily detached have.

The end of the second fixing plate 143 is bent toward the front (+ X-axis direction), and the fixing ring 160 is coupled to the bent portion by the second hinge 164.

The fixing ring 160 is a bar or a pipe having a shape in which the lower portion extends in the longitudinal direction and the upper portion is inclined by a predetermined angle.

A weight 164 is provided at the lower end of the fixing ring 160 so that when the external force that rotates about the second hinge 164 on a plane parallel to the folded portion is not provided, Of the second fixing plate 143 in the fixing groove 146 of the second fixing plate 143, and in FIG. 4, in the clockwise direction. Therefore, when the operator does not rotate, the state as shown in Fig. 4 (a) is maintained.

4, when the fixing ring 160 is rotated in the counterclockwise direction, the opening of the bracket 140 is opened so that the handrail leg 122 can smoothly enter or advance, The opening of the bracket 140 is closed to prevent the handrail leg 122, which has entered the bracket 140, from falling down.

According to this embodiment, the handrail leg 122 is supported in the vertical direction by the fixing pin 150 inserted into the fixing pin hole 144 (see the vertical state in FIG. 6) (See the inclined state in Fig. 6) by a predetermined angle or more.

If it is impossible to vertically install the folding type handheld 120 according to the characteristics of the working position during the use of the stepwise moving workbench 100, it is possible to use only the fixing ring 160 instead of the fixing pin 150 It is possible to secure the operator by supporting the folding type helix 120 in a state of being inclined at a predetermined angle (see the inclined state of Fig. 6).

Even if the fixing pin 150 is disengaged during the process of moving the stepwise moving workbench 100, it is possible to prevent the folding type handheld 120 from being inclined by a predetermined angle or more by the fixing hook 160, .

It will be apparent to those skilled in the art that various modifications and variations can be made in the present invention without departing from the spirit or scope of the invention as defined in the following claims And changes may be made without departing from the spirit and scope of the invention.

100: Cascade moving workbench 112: Body
114: moving wheel 116: stair footstep
118: stationary handrail 120: foldable handrail
122: handrail leg 124: first hinge
130: Handrail safety device 140: Bracket
141: attachment plate 142: first fixing plate
143: second fixing plate 144: fixing pin hole
145: hook portion 146: fixing groove
150: fixing pin 160: fixing ring
162: weight weight 164: second hinge

Claims

A leg of a foldable handrail hinged to the lower portion of the attachment plate through an opening formed by a first fixing plate and a second fixing plate protruding sideways from both sides of the attachment plate is attached to the side of the body of the step- A bracket capable of entering or advancing into the interior space;
A fixing pin inserted into the fixing pin hole formed in the first fixing plate and the second fixing plate; And
And a fixing ring which is hingedly connected to a bent portion of the second fixing plate at an end thereof forward and which is elongated downwardly and whose upper portion is inclined at a predetermined angle,
And an upper end of the fixing ring is inserted into a fixing groove opened downward by a hook provided at an upper end of the first fixing plate.

The method according to claim 1,
And a weight is additionally provided at a lower end portion of the fixing ring.

The method according to claim 1,
And the retaining ring maintains a state of being inserted into the retaining groove in normal condition.

The method according to claim 1,
Wherein the hook portion is inverted and has an end directed toward the fixing groove so that the entrance of the fixing groove is narrower than the inside thereof.

Body;
A moving wheel installed at a lower end of the body;
A stepped stepping part installed in a multi-layered structure on an inclined front side of the body;
A stationary handrail installed at a side of a lower portion of the stair footstep;
A foldable handrail installed on a side of an upper portion of the stair footstep; And
And a handrail safety device provided in cooperation with the legs of the folding handrail so as to prevent the folding handrail from being initially more than a predetermined angle when the folding handrail is used and to be kept perpendicular to the stepping foot portion secondarily Cascade moving workbench.