KR102341325B1 - Safety workbench - Google Patents

Abstract

The present invention relates to a safety workbench comprising: a fixed work unit fixed to an upper structure fixed on top of a structure, which is a target of work; a movable guide unit installed at the fixed work unit to be able to move up and down, and forming a workspace of a worker to prevent a fall accident of the worker; and a driving module generating driving force to cause the movable guide unit to move up and down. The fixed work unit is formed in a rectangular frame shape with multiple frames when viewed from above, and side wall portions are formed in a rectangular frame shape with multiple frames on both sides of the fixed work unit when viewed from both sides. The movable guide unit is formed in a rectangular frame shape with multiple frames when viewed from above, and a front wall, a rear wall, a left wall, and a right wall are formed in a rectangular frame shape with multiple frames on front, rear, left and right sides of the movable guide unit when viewed in each direction. An entry and exit space for the worker to enter and exit is formed on front sides of the fixed work unit and the movable guide unit. According to the present invention, the safety workbench can prevent a worker from falling when working at height on top of the structure by guiding the worker so that the worker can safely work on the curved top surface of the structure, thereby improving safety.

Description

Safety Workbench {SAFETY WORKBENCH}

The present invention relates to a safety workbench, and more particularly, to a safety workbench that guides an operator to safely work on a structure such as a cargo vehicle or tank having a curved upper surface such as a tank lorry.

A tank lorry is a truck equipped with a tank that can transport a large amount of liquid or gas such as petroleum, propane gas, and chemicals.

That is, a tank formed in a substantially cylindrical shape is provided in the tank lorry.

A door is installed on the upper surface of the tank so that a fluid can be introduced into the tank or a fluid stored in the tank can be discharged.

As described above, a fall accident frequently occurs in the process of directly opening and closing a door installed on the upper surface of a tank having a curved upper surface.

In order to prevent such a fall accident of the worker, a connecting bar is installed to connect the loop of the seat belt connected to the worker's work clothes to the structure installed on the upper part of the work space.

However, when workers do not connect the seat belt to the connecting bar or the connection between the seat belt and the connecting bar is poor due to inconvenience in the work process, there is a problem in that it is difficult to prevent a fall accident.

Therefore, there is a demand for the development of a safety workbench technology that guides a worker to work safely in a work space having a curved upper surface such as the upper portion of a tank lorry.

On the other hand, the following Patent Document 1 and Patent Document 2 discloses a safety workbench and workbench configuration for performing necessary work such as a tank or a pier.

However, the safety workbench according to the prior art including Patent Document 1 and Patent Document 2 has a complicated structure, and when a separate work cart is applied, there is a problem in that additional costs, manpower, and equipment must be input.

Republic of Korea Patent Registration No. 10-0476659 (Announced on March 17, 2005) Republic of Korea Patent Registration No. 10-0951891 (Announced on April 15, 2010)

SUMMARY OF THE INVENTION It is an object of the present invention to solve the above problems, and to provide a safety workbench that guides the operator so that the operator can work safely on the upper portion of the structure having a curved upper surface.

Another object of the present invention is to provide a safety workbench capable of improving safety by preventing a fall accident of an operator during work at height above a structure.

In order to achieve the object as described above, the safety workbench according to the present invention is a fixed work unit fixed to the upper structure installed on the upper part of the structure to be worked, and is installed so as to be movable in a lifting operation in the fixed work unit, and saves the work space of the worker. Formed to include a moving guide unit guiding to prevent an operator from falling and a driving module for generating a driving force to move the moving guide unit up and down, wherein the fixed work unit has a rectangular frame shape when viewed from above using a plurality of frames. is formed, and on both sides of the fixing work part, side wall parts are respectively formed in a rectangular frame shape when viewed from both sides using a plurality of frames, and the movement guide part is formed in a rectangular frame shape when viewed from above using a plurality of frames, and the movement A front wall, a rear wall, a left wall and a right wall are formed in the shape of a square frame when viewed from each direction using a plurality of frames on the front and rear and left and right sides of the guide part, respectively, and a worker enters and exits the front of the fixed work part and the moving guide part It is characterized in that an entrance space is formed.

As described above, according to the safety workbench according to the present invention, the effect of guiding the operator to work safely on the upper portion of the structure having a curved upper surface is obtained.

Accordingly, according to the present invention, there is an effect that safety can be improved by preventing a fall accident of an operator during work at height above the structure.

1 is a perspective view of a safety workbench according to a preferred embodiment of the present invention;
2 is a view showing a state in which the movement guide part of the safety workbench shown in FIG. 1 is lowered;
3 is an exploded perspective view of the safety work bench shown in FIG. 1;
Figure 4 is a partial enlarged view of the part A shown in Figure 2,
FIG. 5 is an enlarged partial view of part B shown in FIG. 3 .

Hereinafter, a safety workbench according to a preferred embodiment of the present invention will be described in detail with reference to the accompanying drawings.

1 is a perspective view of a safety workbench according to a preferred embodiment of the present invention, FIG. 2 is a view showing a state in which the movement guide part of the safety workbench shown in FIG. 1 is lowered, and FIG. is an exploded perspective view of

Hereinafter, terms indicating directions such as 'left', 'right', 'front', 'rear', 'up' and 'down' are defined as indicating each direction based on the state shown in each figure. do.

In this embodiment, a configuration of a safety workbench that safely guides the operator who opens and closes the door on the upper part of the tank lorry will be described so that the ash generated in the power plant is loaded and discharged in the tank using the tank lorry.

Of course, the present invention is not necessarily limited thereto, and it can be changed to be applicable not only to tank lorries but also to safety workbenches that safely protect workers who work at height on top of structures of various shapes and uses, such as tanks, in which the upper surface is formed with a curved surface. should be noted.

As shown in FIGS. 1 to 3, the safety workbench 10 according to a preferred embodiment of the present invention is a fixed work unit ( 20), the moving guide unit 30 and the moving guide unit 30 that are installed so as to be capable of lifting and lowering operation in the fixed work unit 20 and guide the worker to prevent a fall accident by forming a work space for the worker It includes a driving module 40 for generating a driving force.

The driving module 40 may be driven according to a control signal of a control panel (not shown) connected by a wireless or wired communication method.

The fixed work unit 20 is fixed to the upper structure 11 and functions to support the movement guide unit 30 in a lifting operation.

To this end, the fixed work unit 20 is formed in a substantially rectangular frame shape when viewed from the top using a plurality of frames, and on both sides of the fixed work unit 20, a plurality of frames is used to form an approximately rectangular frame shape when viewed from both sides. Side wall portions 21 may be formed, respectively.

Both side wall portions 21 of the fixing operation unit 20 may be respectively fixed to the upper structure 11 by welding or the like. An installation bracket 43 on which a driving module 40 to be described below is installed may be coupled to both side wall portions 21 , respectively.

And one side of the fixed work unit 20, the front when viewed in FIG. 3 may be provided with an access space 22 through which the operator can enter and exit.

To this end, the front frame 23 disposed on the front side of the fixing work unit 20 may be provided as a pair by being spaced apart by an interval corresponding to the access space 22 .

Here, the pair of front frames 23 may be connected to the upper structure 11 by welding using a pair of connecting frames 24 arranged in the vertical direction, respectively.

Of course, the frame disposed on the rear surface of the fixing working part 20 may also be connected to the upper structure 11 by welding so that the fixing working part 20 is firmly fixed to the upper structure 11 .

The movement guide unit 30 is operably coupled to the fixed work unit 20 for elevating operation, and is seated on the upper surface of the structure, that is, the tank lorry, during the lowering operation to form a work space for the worker to work, and to prevent the worker from falling It functions to shield the periphery of the working space.

In detail, the movement guide unit 30 is formed in a substantially rectangular frame shape when viewed from the top using a plurality of frames, and a plurality of frames are used on the front and rear and left and right sides of the movement guide unit 30 in each direction. The front wall 31 , the rear wall 32 , the left wall 33 and the right wall 34 may be formed in a substantially rectangular frame shape when viewed from .

The front wall 31 is provided with an entrance space 35 through which an operator can enter and exit.

A handrail 36 may be installed on the front wall 31 at preset intervals to prevent an operator from entering and exiting the work space through the remaining portions except for the access space.

Similarly, the handrail 36 may be installed on the rear wall 32 , the left wall 33 , and the right wall 34 to prevent the worker from entering and exiting the work space, at preset intervals.

Meanwhile, FIG. 4 is an enlarged partial enlarged view of part A shown in FIG. 2 , and FIG. 5 is an enlarged partial enlarged view of part B shown in FIG. 3 .

As shown in FIG. 4 , an extension frame 37 is installed to extend upwardly at each vertex of the movement guide unit 30 . The extension frame 37 may have a substantially square cross-section when viewed from the top.

The extension frame 37 moves up and down while in contact with the inner surface of the support frame 25 installed to extend downward from the front and rear ends of both side wall portions 21 of the fixing work unit 20 .

The support frame 25 may be formed in a 'L' shape in cross section when viewed from the top.

So, on the outer surface of the extension frame 37 in contact with the inner surface of the support frame 25, as shown in FIG. 5, the extension frame 37 to prevent damage due to contact and friction with the support frame 25. A protective pad 38 to protect the contact surface of the may be installed.

For example, the protective pad 38 may be manufactured using a synthetic resin material having mechanical strength, abrasion resistance, and self-lubrication, such as MC nylon.

The MC nylon is an industrial resin produced by anionic polymerization of caprolactam, a monomer of nylon-6 (NYLON-6), directly injected into a mold. Because it is much higher, it has excellent mechanical strength and self-lubrication, excellent heat resistance, wear resistance and durability, and has shock absorption and noise prevention properties. In addition, MC nylon has good insulation and battery properties, and has excellent properties such as light weight, corrosion resistance, water resistance, and organic solvent resistance.

As described above, the present invention can prevent damage or breakage of the extension frame due to contact with the support frame during the lifting operation of the moving guide unit installed in the fixed work unit.

The upper end and the lower end of the driving module 40 are respectively connected to the fixed working unit 20 and the moving guide unit 30 , and the moving guide unit 20 can be lifted and lowered by a stretching operation.

For example, the driving module 40 includes one or more, for example, two pairs of a cylinder 41 installed on both sidewalls 21 of the fixed working unit 20 and a rod 42 that expands and contracts in the cylinder 41 . may include

The upper end of the cylinder 41 is connected to the installation brackets 43 installed on both side wall portions 21 of the fixed work unit 20, and the lower end of the rod 42 is a movement guide unit ( 30) may be connected to the connection bracket 44 installed on the left wall 33 and the right wall 34, respectively.

The installation bracket 43 may include a coupling shaft coupled through both side plates and the upper end of the cylinder 41 .

Similarly, the connection bracket 44 may include a coupling shaft coupled through both side plates and the lower end of the rod 42 .

The installation bracket 43 and the connection bracket 44 are respectively attached to the left and right walls 33 and the right wall 34 of the both side wall portions 21 and the movement guide portion 30 of the fixed working unit 20 in the front-rear direction. A total of two pairs may be installed spaced apart by a predetermined interval.

The driving module 40 configured in this way can expand and contract by the pressure of the fluid supplied or blocked in the tank in which the fluid such as air or oil is stored according to the control signal of the control panel.

Of course, the present invention is not necessarily limited thereto, and may be changed to be configured by applying a power transmission unit using an electric motor or a hydraulic motor driven according to a control signal of a control panel, a gear, a belt, a pulley, and the like.

As described above, the present invention can guide the operator to work safely by forming a work space by seating the movement guide on the upper portion of the structure having a curved upper surface.

Accordingly, according to the present invention, it is possible to improve safety by preventing a fall accident of an operator when working at height above a structure.

Next, the coupling relationship and operation method of the safety workbench according to a preferred embodiment of the present invention will be described in detail.

First, the operator assembles the fixed work unit 20 and the movement guide unit 30 , respectively.

That is, after assembling the fixing work part 20 in a rectangular frame shape when viewed from the top using a plurality of frames, the side wall parts 21 are assembled on both sides, respectively.

And, after assembling the movement guide part 30 in a rectangular frame shape when viewed from the top using a plurality of frames, the side wall parts 31 to 34 are assembled.

At this time, the front surfaces of the fixed work unit 20 and the movement guide unit 30 are provided with access spaces 22 and 35 to allow workers to enter and exit, respectively.

Then, the operator joins the mounting bracket 43 to both side wall portions 21 of the assembled fixed work unit 20 by welding, respectively, and the left wall 33 and the right wall of the assembled movement guide unit 30 . The connecting brackets 44 are respectively coupled to the 34 by welding.

When the assembly of each of the fixed work unit 20 and the movement guide unit 30 is completed, the operator joins the frames constituting both sidewalls 21 of the fixed work unit 20 to the upper structure 11 by welding. .

Next, in the state in which the movement guide part 30 is inserted and disposed in the fixed working part 20 , the upper end of the cylinder 41 and the lower end of the rod are passed through the mounting bracket 43 and the connecting bracket 44 , respectively By combining the coupling shaft, the fixed work unit 20, the driving module 40, and the movement guide unit are assembled.

Through this process, when the assembly of the safety workbench 10 is completed, the driving module 40 normally raises the movement guide unit 30 as shown in FIG. 1 . Therefore, a space is formed in the lower part of the safety work bench 10 in which the tank lorry can move smoothly without interference with the safe work bench 10 .

On the other hand, when the tank lorry moves to a preset position under the safety work bench 10 and stops, the driving module 40 lowers the movement guide unit 30 according to the control signal of the control panel as shown in FIG. 2 . make it

The movement guide unit 30 is seated on the upper surface of the tank of the tank lorry, and accordingly, a work space is formed in the upper part of the tank to safely work by the movement guide unit 30 .

Then, the operator installs a ladder on the side of the tank lorry, enters the work space through the access spaces 22 and 35 formed in the fixed work unit 20 and the movement guide unit 30 through the ladder, and performs the work to be performed can do.

As described above, according to the present invention, a work space can be formed in which an operator can safely work by seating the movement guide unit in which the handrail is formed on each sidewall at regular intervals on the upper part of the structure.

Therefore, the present invention can maximize safety by effectively preventing a fall accident of an operator when the upper surface of the curved upper surface of the structure works at height.

On the other hand, when the work is completed, the worker moves to the ground again through the access spaces 22 and 35 and the ladder, and the driving module 40 raises the movement guide unit 30 again.

Through the process as described above, the present invention can guide the operator to work safely on the upper portion of the structure having a curved upper surface.

Accordingly, it is possible to improve safety by preventing a fall accident of an operator when working at height above the structure.

Although the invention made by the present inventors has been described in detail according to the above embodiments, the present invention is not limited to the above embodiments, and various modifications can be made without departing from the gist of the present invention.

The present invention is applied to a safety workbench technology that improves safety by preventing a fall accident of an operator when working at height above a structure by guiding a worker to work safely on the upper part of a structure having a curved upper surface.

10: safety workbench
11: superstructure
20: fixed work part
21: side wall 22: entrance space
23: front frame 24: connection frame
25: support frame
30: movement guide unit
31 to 34: front, rear, left, right wall
35: entrance area 36: handrail
37: extended frame 38: protective pad
40: drive module
41: cylinder 42: rod
43: mounting bracket 44: connecting bracket

Claims (3)

A fixed working part fixed to the upper structure installed on the upper part of the structure to be worked;
A moving guide unit installed so as to be movable in a lifting operation in the fixed work unit, and guiding the worker to prevent a fall accident by forming a work space for the worker; and
and a driving module for generating a driving force to move the moving guide unit up and down;
The fixing work part is formed in a rectangular frame shape when viewed from the top using a plurality of frames,
On both sides of the fixing work part, side wall parts are formed in a rectangular frame shape when viewed from both sides using a plurality of frames,
The movement guide part is formed in a rectangular frame shape when viewed from the top using a plurality of frames,
A front wall, a rear wall, a left wall, and a right wall are formed in the shape of a quadrangular frame when viewed from each direction using a plurality of frames on the front and rear and left and right sides of the movement guide, respectively,
An entry and exit space is formed in front of the fixed working part and the moving guide part through which an operator enters and exits,
The driving module includes at least one cylinder installed on both sidewalls of the fixed work unit, respectively;
Includes a rod that expands and contracts in the cylinder,
The upper end of the cylinder is connected to the mounting brackets installed on both side walls of the fixing work,
The lower end of the rod is connected to connection brackets respectively installed on the left and right walls of the movement guide,
An extension frame extending upward is installed at each vertex of the movement guide part,
Support frames for supporting the extension frame to be lifted up and down are installed on both side wall portions of the fixing work unit to extend downward,
A protective pad for protecting a contact surface with the support frame is installed on the extension frame,
The protective pad is a safety workbench, characterized in that it is manufactured using a material of a synthetic resin material having mechanical strength, abrasion resistance and self-lubrication.
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