KR101220332B1 - support device - Google Patents

Abstract

The present invention relates to a cradle in which the worker is located at the height of the operation, and in particular, a stable operation can be performed by preventing the entire shaking from the fixing part in the state where the cradle is installed at the working position.
The present invention relates to a technology for increasing the work efficiency by enabling a rapid position movement by allowing a worker to move in a descending and rotating form.

Description

Cradle {support device}

The present invention relates to a cradle that serves as a pedestal during high altitude work of a worker in a maintenance or repair operation of a large storage tank or pipe.

Large tanks or large pipes that store or move oil or solids should be repaired by welding the parts directly when the cracks are generated by self-corrosion or external shock during use.

If a crack occurs at the point where the operator's key does not reach, such as the middle part of a large storage tank, the worker carried out the repair work by moving to the maintenance point while hanging on the top of the tank or connected to a separate crane.

However, this work method has a problem that the rope is easily shaken due to external factors such as wind, so that a fall accident is large, and the work is not smoothly performed by shaking, and the position movement is difficult in the working process.

In particular, the reinforcing work of large tanks or large pipes is carried out in the spiral direction along the circumference of the inner circumference in order to increase the shear strength.

The present invention for solving this problem,

It aims to provide a cradle that can improve the work efficiency by preventing the safety accident by keeping the position of the worker stably without shaking, and by freeing the position movement to the desired point in the working process.

The cradle according to an embodiment of the present invention, the main shaft is inserted along the longitudinal direction of the inside of the workpiece, the work part is installed on the main shaft and one end is connected to the main shaft and the other end is in contact with the workpiece surface And a fixing part for fixing the position of the main shaft.

And the fixing part includes a support that is installed so that one end is connected to the main shaft and the other end is connected to the surface of the workpiece, the fixed drive for controlling the contact between the support and the workpiece by operating the support in a state connected to the support. Can be.

In addition, the support is provided in the form of a rod so that one end is rotatable on the main shaft, the fixed drive unit may be connected in the form of controlling the rotation of the support.

And the main shaft is a screw portion is formed in a portion of the outer peripheral surface, the fixed drive portion,

A nut member coupled to the screw part and moved along the screw section, a movable block seated on the nut member and moved along the nut member, and a connecting member connected at both ends to be rotatable to the movable block and the support. Can be.

The support may be formed radially around the main axis, the support may further include a support roller which is installed at the end in contact with the surface of the workpiece.

In addition, the screw portion and the fixing portion may be installed symmetrically on both sides of the main shaft.

The work part may be installed to be rotatable about the main shaft and include a work plate on which an operator is positioned, and a rotation driving part controlling the rotation of the work plate.

In addition, the rotation driving unit may include a drive motor installed on the working plate, a drive gear connected to the drive motor to rotate and a fixed gear meshing with the drive gear in the state connected to the main shaft.

And a linear moving part installed on the main shaft and moving along the longitudinal direction of the main shaft in a state of being connected to the working plate.

In addition, the linear moving part may be installed to surround the main shaft is moved along the main shaft length direction and the moving body is connected to the work plate is rotatable, and may include a linear driving part connected to the moving body to control the movement of the moving body. have.

And the movable body is extended to extend downward from the lower surface,

It includes a seating plate formed on the lower end of the extension, the working plate is installed to surround the extension is rotated around the extension can be installed on the seating plate.

In addition, an electric wire winding groove may be formed on an outer circumferential surface of at least one of the seating plate and the moving body.

The linear driving unit may include a winding roller installed at the end of the main shaft and a connecting wire having one end connected to the moving body in a state of being wound around the winding roller.

In addition, the outer peripheral surface of the main shaft and the inner peripheral surface of the movable body is made of a square,

The fixed gear may be formed on the outer peripheral surface of the moving body.

According to each embodiment of the present invention,

Since the shaking of the entire work support is prevented by the fixing part, the worker located on the working part can stably work.

In addition, since the position of the worker can be easily moved in various directions by the linear moving part and the rotary driving part, the overall work efficiency improvement effect can be obtained by improving the moving speed.

In particular, since the rotational movement of the worker's position and the lifting and lowering movement can be made at the same time, the work efficiency is further improved, and there is an advantage that the spiral reinforcement welding work can be performed on the entire inner circumferential surface of the pipe.

In addition, since the fixing part has a rotating structure, it can be installed on various kinds of workpieces having different internal diameters.

1 is an overall perspective view of the present invention
2 is an overall cross-sectional view showing a state in which the present invention is installed inside the workpiece.
Figure 3 is an overall cross-sectional view showing the operation of the fixing part in the process of being inserted into the workpiece.
Figure 4 is an overall cross-sectional view showing the working plate is raised by the linear moving unit.
Figure 5 is a plan view showing a state that the operator position is rotated about the main axis by the rotary drive unit

Hereinafter, embodiments of the present invention will be described in detail with reference to the accompanying drawings so that those skilled in the art can easily carry out the present invention. The present invention may, however, be embodied in many different forms and should not be construed as limited to the embodiments set forth herein. Like parts are designated with like reference numerals throughout the specification.

For reference, the workpiece P described below may be variously applied as long as the product has a structure in which walls face each other in an empty state such as a large large pipe or a storage tank.

The workbench of the present invention includes a main shaft 100, a fixed part 200, a linear moving part 300, and a working part 400 as shown in FIGS. 1 and 2.

First, the main shaft 100 serves as the overall main skeleton at the same time as the other components described below are installed, the overall length is made in the form of a rectangular shaft, the screw portion 110 on the outer circumferential surface of the predetermined distance apart from the intermediate point It is made of a formed structure.

In addition, a first hinge portion H1 for pivotal coupling with the support 210 which will be described later is formed on the upper and lower portions of the main shaft.

The length of the main shaft 100 is made similar to the height of the large pipe or tank of the workpiece (P), and if necessary by dividing by a certain length to allow mutual coupling separation, the length of the workpiece (P) Depending on the length may be varied.

The main shaft 100 has a fixing part 200 is installed,

The fixing part 200 serves to prevent shaking of the main shaft 100 in a state in which the main shaft 100 is located inside the workpiece P, and includes the support 210 and the fixed driving unit 220 again. .

Among them, the support 210 serves to fix the position of the actual spindle 100 of the fixing part 200, and has a simple rod shape, and one end thereof is connected to the first hinge part H1 of the spindle 100. It is installed in a structure that can be rotated around the hinge portion H1.

And on the bottom of the support 210 is provided with a second hinge portion (H2) for rotational coupling with the connecting member 226 which will be described later.

The support 210 is disposed in a plurality of radially toward the four directions around the main shaft 100, the contact roller 212 is provided on the other end of each support 210 in contact with the workpiece (P) surface.

At this time, the sum of the lengths of the support 210 and the contact roller 216 is the contact roller 212 of each support 210 is the inner peripheral surface of the workpiece (P) when the main shaft 100 is inserted into the workpiece (P) It is manufactured to be in exact contact.

The fixed driving unit 220 constituting the fixing unit 200 together with the support 210 rotates the support 210 in the process of inserting the main shaft 100 into the work object P or removing it to the outside. ) And a function of preventing collision between the workpiece P and the nut member 222, the movable block 224, and the connection member 226.

Among them, the nut member 222 serves as a substantial driving source for the rotation of the support 210. As a name, the nut member 222 has a general nut structure, that is, a structure in which a screw part is formed in the center thereof, and the screw part 110 of the main shaft 100 is fitted to each other. Screwed together.

And the handle 223 is provided on the side of the nut member 222, when the operator grabs the handle and rotates the nut member 222, the nut member 222 is raised and lowered on the screw unit 110 by the screw coupling structure Will have

And the moving block 224 is to convert the rotation + lifting motion of the nut member 222 to the lifting linear motion only in the process of transmitting the driving force of the nut member 222 to the support 210, and transmits it, It is made of a simple block shape and is simply seated on the upper surface of the nut member 222 in the state that the main shaft penetrates the through-hole 225 formed in the center.

At this time, the through hole 225 is made of the same square as the main shaft 100, but the diameter is formed larger than the screw portion 110 to prevent the contact with the screw portion 110 in the lifting process.

And the side of the moving block 224 is provided with a third hinge portion (H3) for the rotational coupling of the connection member 226 to be described later as the number of the support (210).

The connecting member 224 serves to directly rotate the support 210 by transferring the lifting and lowering movement of the moving block 224 to the support 210, made of a simple rod shape, one end of the third hinge portion It is connected to (H3) and the other end is connected to the second hinge portion (H2) of the support (210).

As the first, second, and third hinge parts H1, H2, and H3 are coupled to each other, the connection member 226 is connected to the movable block 224 and the support 210 in a link structure.

Therefore, as shown in FIG. 3, when the nut member 222 and the movable block 224 are raised and lowered, the support 210 has a structure in which the support member 210 is pivoted up and down by the connecting member 226 to the center of the first hinge portion H1. . Specific operation process will be described later.

In addition, only one fixing part 200 of the structure may be installed at the upper or lower portion of the main shaft or may be installed in mutually symmetrical structures at both ends of the main shaft 100 as shown in the drawing.

The linear movement unit 300 is installed on the main shaft 100 in which the fixing unit 200 is installed.

The linear moving part 300 serves to move the vertical position of the worker, and is configured to include the moving body 310 and the linear driving part 320 again.

First, the moving body 310 is a function of connecting the linear moving unit 300 and the main shaft 100 and connecting the working unit 400 to be described later, consisting of a predetermined length of the tube structure and the intermediate point of the main shaft 100 Located in the form surrounding the main shaft, that is, the main shaft 100 is installed in a state of being penetrated.

At this time, the moving body 310 is located in the non-screw section of the main shaft 100 is set the inner diameter to be slidable along the longitudinal direction of the main shaft 100.

And the lower end of the moving body 310, the extension portion 312 is formed to extend downward, the lower portion of the extension portion 312 is formed integrally formed with a seating plate 314 for installation of the rotating plate 410 to be described later.

Therefore, a gap is formed between the seating plate 314 and the movable body 310, and the hollow portion of the movable body 310 is formed to penetrate to the seating plate 314 at the same time.

In this case, the outer circumferential surface of the extension part 312 is manufactured to form a circular shape instead of a square shape for smooth rotation of the working plate 410 described later.

And the outer circumference of the seating plate 314 is formed with a wire winding groove 315 so that the wires connected to each motor to be described later is wound.

The linear driving unit 320 serves as a driving source for the linear movement of the linear body 310, the winding motor 322 is installed on one side of the main shaft 100, the winding roller 324 is wound on the winding motor 322 Is connected to the winding roller 324 is made of a structure in which one end of the connection wire 326 is connected to the moving body 310 in a state in which the connection wire 326 is wound.

Accordingly, when the winding roller 324 is rotated, the connection wire 326 is wound and is operated to raise or lower the moving body 310.

At this time, the take-up roller 324 is positioned to be symmetrical with respect to the main shaft 100, as shown in [Fig. To prevent failure.

The linear driving unit 320 is not limited to such a pulley structure, and may be modified in various forms as long as it can raise and lower the moving body 310 by using a separate power source.

The linear moving unit 300 is connected to the working unit 400.

The work unit 400 serves to rotate the position of the worker and the worker is positioned, and is configured to include the working plate 410 and the rotation driving unit 420 again.

The working plate 410 is formed in the form of a plate as the worker is actually located in the gap of the moving body 310 and the extension portion 312 penetrates the intermediate point is coupled to the moving body 310 in this state It is seated on the seating plate 314.

At this time, a first bearing B1 is installed between the working plate 410 and the extension part 312 so that the working plate 410 can be smoothly rotated about the extension part 312, and the bottom of the working plate 410. The second bearing B2 is installed between the surface and the seating plate 314 to minimize friction with the seating plate 314 during the rotation process.

And if necessary, by installing a chair on one side of the working plate 410 to allow the worker to sit and work.

The rotation driving unit 420 serves as a driving source when the working plate 410 is rotated, the driving gear 424 rotated by the driving motor 422 and the driving motor 422 installed on the working plate 410, and The fixed gear 426 meshes with the drive gear 424.

At this time, the fixed gear 426 is meshed with the fixed gear 426 in a state provided integrally on the outer peripheral surface of the moving body (310).

When the driving gear 424 is driven and engaged with the fixed gear 426 by this structure, the work plate 410 is rotated about the moving body 310.

Specific operation process will be mentioned in the action description to be described later.

For reference, the fixed gear 426 may be implemented as a structure for directly forming a gear tooth on the outer circumferential surface of the movable body 310 in addition to the structure coupled to the movable body 310 in a separately manufactured state as shown.

Hereinafter will be described the operation of the present invention by the above structure and the effects generated in the process.

For reference, in the state before the work table 410 is inserted into the workpiece (P) it will be described assuming that the support 210 of the fixing part 200 is fully extended in all directions as shown in FIG.

In this state, when the whole work table 1 is to be inserted into the work object P, the operator turns the nut member 222 by holding the handle 223 of the fixing part 200 as shown in FIG. The member 222 is moved downward along the section of the threaded portion 110 while rotating.

Therefore, the movable block 224 and the connecting member 226 seated on the nut member 222 are also lowered together, wherein the movable block 224 is a structure that is not screwed with the screw 110 and the through hole 225 and the main shaft are Since it is coupled through in a rectangular state, it does not rotate with the nut member 222 but simply slides down in a linear direction.

In this process, as each connecting member 226 pulls down each support 210, the support 210 is rotated downward with respect to the first hinge axis H1. At this time, since the connecting member 226 and the support 210 have a mutually rotating structure through the second hinge portion H2, the support can be smoothly rotated.

When the nut member 222 is continuously lowered, each support 210 is folded downward in the same form as the folding structure of the umbrella.

In this state, when lifting the entire work platform 1 using a crane C or the like and placing it on the work object P inlet, the distance between the contact roller 212 of each support 210 and the inlet edge of the work object P is maintained. (A) is formed.

In this state, when the work table 210 is inserted into the work object P, it is smoothly inserted as shown in FIG. 3 without a collision between the contact roller 212 and the work object P inlet by the gap A.

Of course, the pivoting structure of the support 210 may be transformed into a structure that is rotated upward in the expanded state of the support.

Thus, when the whole work table is inserted into the workpiece (P) in the state of turning the nut member 222 reversely rising, each support 210 is rotated up around the first hinge portion (H1) as shown in FIG. The contact roller 212 of the support 210 is in contact with the inner wall of the workpiece (P) at the same time.

That is, as each support 210 which extends in all directions about the main shaft 100 is in contact with the inner wall at the same time, the phenomenon in which the main shaft 100 located at the center is rotated or shaken is blocked.

In particular, when the fixing part 200 is provided both above and below the main shaft as shown in the drawing, the position of the main shaft can be more stably maintained.

In this state, as shown in [FIG. 3], each winding roller 324 is rotated by the winding motor 322 of the linear driving unit 320 so that each connecting wire 326 is pulled and connected to the moving body 310. As it is lifted up, the working plate 410 is also raised.

In this process, when the working plate 410 is raised to the corresponding maintenance point height, the linear driving unit 320 is stopped. And when the lifting movement of the worker position is required, the take-up roller 324 is rotated in reverse to move the moving body 310 and the working plate 410 by the connection wire 326.

 In addition, when the rotational movement of the worker position is required, when the driving motor 422 of the rotary drive unit 420 is operated, the drive gear 424 is rotated while being engaged with the fixed gear 426, where the fixed gear 426 is the movable body. Since the rotation is impossible by the 310, the drive gear 424 is moved along the circumference of the fixed gear 426, and the entire work plate 410 is rotated about the moving body 310.

That is, since the work plate 410 can be raised and lowered and rotated by the linear moving part 300 and the rotation driving part 420, the worker's movement can be made in three dimensions instead of in one direction. You can get the effect.

For reference, when the linear driving unit 320 and the rotary driving unit 420 are operated at the same time, the position movement of the worker can be made more quickly.

As described above, since the position of the main shaft 100 is fixed by the fixing part 200, the lifting and lowering of the work plate 410 may be performed stably.

As described above, the present invention is characterized in that it is provided with the fixing part 200 to prevent the shaking of the worktable 1 as a whole, so that the work of the worker can be made stably.

In addition, it is possible to change the position of the operator in a state in which the vertical rotation method is applied in combination, so as to improve the work efficiency by rapid and stable position movement is another feature.

In addition, as the lifting and rotating of the worker's position can be performed at the same time, when the internal reinforcing welding of the circular pipe, the welding work in the spiral direction is possible over the entire inner circumferential surface of the pipe, so that the reinforcement efficiency of the pipe can be further increased. There is also.

The present invention described above can be modified as much as possible, since the present invention basically aims at stable operation of the worker by preventing shaking,

In this case, the lifting and lowering and rotating structure of the working plate 410 having only a function of shifting the position of the worker may be omitted and may be manufactured to a structure that prevents shaking of the main shaft using only the fixing part 200.

In addition, only one of the rotary structure and the linear movement structure of the working plate 410 may be applied.

In addition, the structure of the fixing part 200 may be modified differently. In addition to the rotating structure of the support described above, the support itself may be manufactured in the form of multiple overlapping pipes so that the length of the fixing part 200 may be adjusted by the draw-out between each overlapping pipe. Can be.

In this case, the nut member, the moving block, and the connecting rod for supporting the support may be omitted.

As described above, various embodiments of the present invention can be variously modified and combined by those skilled in the art. As such deformations and combinations are provided with fixing parts to prevent shaking of the main shaft and the working plate, the fall of the operator due to the shaking If it is related to the configuration and purpose to prevent accidents and to form a stable working environment should be determined to fall within the protection scope of the present invention.

1: holder 100: spindle
110: screw portion 200: fixing portion
210: supporter 212: contact roller
220: fixed drive part 222: nut member
224: moving block 226: connecting member
H1: first hinge portion H2: second hinge portion
H3: third hinge part 300: linear moving part
310: moving body 312: extension part
314: mounting plate 320: linear driving unit
322: winding motor 324: winding roller
326: connection wire 400: working part
410: working plate 420: rotary drive unit
422: drive gear 424: drive gear
426: Fixed Gear

Claims (15)

Spindle located inside the workpiece,
A work part which is installed to be rotatable about the main axis and includes a work plate on which the worker is positioned, and a rotation driving part for controlling rotation of the work plate;
One end connected to the main shaft and the other end in contact with the workpiece surface to fix the position of the main shaft
Cradle including. In claim 1,
The fixing unit includes:
A support having one end connected to the main shaft and the other end connected to a surface of the workpiece;
Fixed drive unit for controlling the contact between the support and the workpiece by operating the support in the state connected to the support,
Cradle including. In claim 2,
The support is installed so that one end can be rotated on the main shaft in the form of a rod,
The fixed drive unit is connected in the form of controlling the rotation of the support
holder. 4. The method of claim 3,
The main shaft is formed with a screw portion in a portion of the outer peripheral surface,
The fixed drive unit,
A nut member coupled to the screw part and moved along the screw section;
A moving block seated on the nut member and moved along the nut member; and
A connecting member having both ends rotatably connected to the movable block and the support;
Cradle including. 4. The method of claim 3,
The support is formed radially about the main axis
holder. The method of claim 3 or 5,
The support further includes a support roller installed at the end and in contact with the surface of the workpiece
holder. 5. The method of claim 4,
The screw portion and the fixing portion is installed symmetrically on both sides of the main shaft
holder. delete In claim 1,
The rotation drive unit includes:
A drive motor installed on the working plate,
A drive gear connected to the drive motor and rotating;
Fixed gear engaged with the drive gear in the state connected to the main shaft
Cradle including. The method of claim 9,
It is installed on the main shaft and connected to the working plate further comprises a linear moving unit moving along the longitudinal direction of the main shaft
holder. 11. The method of claim 10,
The linear moving unit,
A moving body installed to surround the main shaft and moving along the main shaft length direction and connected to the work plate so as to be rotatable;
A linear driving part connected to the moving body to control the movement of the moving body,
Cradle including. 12. The method of claim 11,
The movable body
An extension extending downward from the bottom surface,
It includes a seating plate formed on the lower end of the extension,
The working plate is installed to surround the extension portion is rotated around the extension portion is installed on the seating plate
holder. The method of claim 12,
A cradle in which an electric wire winding groove is formed on at least one outer circumferential surface of the seating plate and the moving body. 12. The method of claim 11,
The linear drive unit,
A winding roller installed and rotated at the end of the spindle;
A connecting wire having one end connected to the moving body while being wound on the winding roller
Cradle including. 12. The method of claim 11,
The outer peripheral surface of the main shaft and the inner peripheral surface of the movable body is made of a square,
The fixed gear is formed on the outer peripheral surface of the moving body
holder.

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