WO2018080248A1

WO2018080248A1 - Flagpole for reducing flag entanglement

Info

Publication number: WO2018080248A1
Application number: PCT/KR2017/012041
Authority: WO
Inventors: 황정호; 남창우
Original assignee: 한국생산기술연구원
Priority date: 2016-10-28
Filing date: 2017-10-30
Publication date: 2018-05-03

Abstract

According to the present invention, disclosed is a flagpole including a hoisting part, the flagpole comprising: a mast formed to be long and having an accommodation space formed therein; a fixed rotary module provided on the accommodation space and having at least a portion rotating along the periphery; a pulley provided at the upper part of the mast; and the hoisting part formed to be long, having one side coupled to the fixed rotary module by passing through the pulley, and having the other side formed so as to surround the periphery of the mast, and having a flag coupled to a portion thereof.

Description

Flag Gaiters to Reduce Flag Tangle

The present invention relates to a flag pole for hoisting a flag or a trade name, and more particularly, a flag entanglement for preventing a flag from being entangled by an external force or a hoisting line twisted by an external force in a flagpole installed in a specific place or public institution. It is about a flag pole to prevent.

In general, many fields use flags or flags, and in Korea, national flags are hoisted by installing flagpoles hanging on the flags at homes on national holidays.

In particular, flags and flags are used all over the world, and many flagpoles have been developed to prevent the flags from being entangled. In the case of household use, a flagpole is used to reduce the tangling of the flag.

In addition, in the case of hoisting a flag on a high place, a method of hoisting a flag was used by tying a flag on a separate hoisting line and descending using a pulley.

However, in such a case, the flag is wound around the flagpole due to a sudden gust or typhoon, which causes the flag's hoisting state to deteriorate, thus reducing the effect of the flag flying.

In order to solve this problem, the flag pole has been developed in the related art, and has a separate rotating member on the top of the basic flag pole, and the rotating member includes upper and lower connection rings for hanging various flags on the hoisting line. .

Here, the rotating member is configured to be rotatable about the flagpole by an external force, and when the flag is wound, it can be rotated together to prevent the flag from being wound.

However, in the prior art as described above, it is difficult for a user to hoist a flag, and when the height of the flagpole is relatively high, there is a problem that the installation of the flag is difficult.

Therefore, there is a need for a method for solving such problems.

The present invention has been made in order to solve the problems of the prior art described above, to provide a flag holder that can prevent the tangling of the flag by the external force or the twisting of the hoisting line to prevent the appearance of unsightly.

In addition, the inside of the flagpole is provided with a rotating part coupled to the pulley may be safe from natural phenomena such as wind, and to provide a flag pole that can prevent the twisting of the hoisting line as well as the tangling of the flag.

The objects of the present invention are not limited to the above-mentioned objects, and other objects that are not mentioned will be clearly understood by those skilled in the art from the following description.

The flag holder of the present invention for achieving the above object is formed long and the receiving space is formed therein, the flagpole is formed with a fixing hole communicating with the receiving space and the outside, and rotatably with a rotating shaft on the top of the flagpole Removable and coupled, at least a part of the fixed rotary module rotates along the circumferential direction of the flagpole by the external force, the pulley is coupled to the fixed rotary module to rotate together in the upper portion of the flagpole is formed long, the flag outside the flagpole Is fixed and the hoisting part including the hoisting line is received inside the receiving space via the pulley and the hoisting line is fixed and lifted in the receiving space, the position where the flag is in contact with the fixed rotating module It may include a lift to limit.

And the fixed rotation module, the cap is coupled in the form surrounding the upper flagpole and a protrusion is provided in the cap is formed so as to be fitted with the end of the flagpole, the inner rotation coupling member having a bearing connected to the cap It includes, the rotary coupling member and the flagpole may be screwed.

The fixed rotation module may include a first through hole into which the hoisting line is inserted, and the first through hole may be formed with a predetermined eccentricity about the rotation axis in the vertical direction.

The lifting unit may be provided to be lifted and lowered from the fixed rotation module, and a second through hole may be formed at a central portion thereof through which the hoisting line penetrates the first through hole.

In addition, the lifting unit, at least one moving hole may be formed in a portion of the circumference to fix the lifting unit to the fixing hole.

The elevating unit may include a panel member in which a plurality of moving holes are formed in a vertical direction in a part of a circumference thereof to fix the elevating unit to the fixing hole.

In addition, the lifting unit may include a lifting rope which is formed to be long and the end is fixed to the moving hole, a part of which is fixed to the fixing hole.

And the hoisting unit, a separate winding motor (WINDING-MOTOR) is provided on the outside is coupled to the end of the hoisting line extending to the outside through the fixing hole can be controlled to raise the flag.

In addition, the hoisting portion, a ring-shaped ring member of the form surrounding the flagpole is formed at the end, the ring member may be provided to be capable of lifting in the longitudinal direction of the flagpole corresponding to the hoisting of the flag.

And the ring member is provided in the lower portion of the flagpole can be limited that the hoisting line swinging by an external force.

In addition, the hoisting portion, the weight may be provided between the ring member and the lower flag to expand the hoisting line.

National flag of the present invention for solving the above problems has the following effects.

First, the fixed rotation module connected to the flag is rotatably provided to prevent the flag from being wound due to wind.

Second, there is an advantage that the hoisting portion is provided in a single shape is connected to the inside and outside of the flagpole to prevent the hoisting portion is twisted.

Third, the lifting part is coupled to the weight at the pulley via the flag, and at the end is provided with a ring member that wraps around the flagpole in response to the lifting of the flag to prevent the flag from being folded in the horizontal direction. have.

Fourth, there is an advantage that the fixed rotation module is provided in the form of a module that can be coupled to the existing flagpole.

Fifth, the configuration of the lifting unit is simple, there is an advantage that can be easily hoisted by fixing the fixed hole after hoisting the flag.

1 is a perspective view showing the external appearance of the flag pole according to an embodiment of the present invention;

2 is a view showing the shape of the flagpole in the flag pole according to an embodiment of the present invention;

3 is a perspective view showing the internal configuration in the flag pole according to an embodiment of the present invention;

4 is a cross-sectional view showing the configuration of a fixed rotation module in the flag pole according to an embodiment of the present invention;

Figure 5 is a schematic diagram showing a state in which the elevating unit in the flag lifting platform according to an embodiment of the present invention;

6 is a plan view showing a structure that is rotated by the wind in the flag pole according to an embodiment of the present invention;

7 is a view illustrating a structure in which a flag moves downward as the lift unit moves upward in the flag pole according to an embodiment of the present invention;

8 is a view showing a structure in which a flag is moved upward as the elevator unit is moved downward in the flag holder according to an embodiment of the present invention;

9 is a view showing the lifting unit in the flag pole according to an embodiment of the present invention;

10 is a view showing a modified example of the lifting unit in the flag pole according to an embodiment of the present invention.

Hereinafter, exemplary embodiments of the present invention will be described in detail with reference to the accompanying drawings. However, the accompanying drawings are only described in order to more easily disclose the contents of the present invention, but the scope of the present invention is not limited to the scope of the accompanying drawings that will be readily available to those of ordinary skill in the art. You will know.

In describing the embodiments of the present invention, the same components and the same reference numerals are used for the components having the same functions, and are not completely identical to the components of the prior art.

Also, the terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. Singular expressions include plural expressions unless the context clearly indicates otherwise. In this application, the terms "comprise" or "have" are intended to indicate that there is a feature, number, step, operation, component, part, or combination thereof described in the specification, and one or more other features. It is to be understood that the present invention does not exclude the possibility of the presence or the addition of numbers, steps, operations, components, components, or a combination thereof.

The present invention relates to a flag pole, the flag (F) is located at a high level flag (F) is provided with a fixed rotation module 200 to prevent the flag (F) from being tangled in the line by the wind (W) or natural phenomena The invention for the hoisting rod will be described in detail with reference to the drawings.

1 is a perspective view showing the external appearance of the flag pole according to an embodiment of the present invention, Figure 2 is a view showing the shape of the flagpole 100 in the flag pole according to an embodiment of the present invention, Figure 3 4 is a perspective view showing an internal configuration of a flag pole according to an embodiment of the present invention, Figure 4 is a cross-sectional view showing the configuration of a fixed rotation module in the flag pole according to an embodiment of the present invention.

First, the configuration of the present invention includes a flagpole 100, a fixed rotation module 200, the lifting unit 300, the hoisting unit 400.

Flagpole 100 is formed long in one direction, the receiving space 160 is formed therein so that the flag (F) can be hoisted or lowered on the side, the fixed rotation module 200 is provided inside the receiving space 160 It is characterized by.

If the flagpole 100 hoisting the flag can be mounted on the upper flag pole.

Subsequently, the flag F, which is lifted from the side of the flagpole 100, is lifted through the pulley 420 with one side disposed adjacent to the flagpole 100.

As shown in FIG. 1, the hoisting portion 400 protrudes upward from the upper portion of the flagpole 100.

The hoisting unit 400 is formed long in one direction with the pulley 420 protruding from the upper portion of the flagpole 100, and one side is directed to the inside of the receiving space 160 via the pulley 420 and the other side is the flagpole ( It is formed to surround the periphery of 100 and includes a hoisting line 440 to which a flag F is coupled to a portion of the longitudinal direction.

Here, the hoisting line 440 may be a wire or a rope which is generally used, and a flag F may be coupled to a part disposed outside the flag pole 100 in the longitudinal direction.

And the hoisting line 440 is preferably maintained in a straight line from the top to the bottom so that the combined flag (F) shape is maintained.

Accordingly, the weight Z is formed at the lower portion of the hoisting line 440 where the flag F is coupled, so that the hoisting line 440 can maintain a straight line.

Here, the weight Z may have a form coupled to the hoisting line 440, or a hole HOLE may be formed therein so that the hoisting line 440 may penetrate.

The hoisting line 440 penetrating the weight (Z) is provided in the form surrounding the circumference of the flagpole 100 again.

Specifically, in order to prevent the flag F from shaking between the pulley 420 and the weight Z, one side is inserted into the accommodation space 160 via the pulley 420, and the other side passes through the flag F. It may be coupled to the circumference of the flagpole 100 via the weight (Z).

At this time, the other side of the hoisting line 440 coupled to the flagpole 100 is formed with a ring member (R) of the form surrounding the circumference of the flagpole 100 is provided so that the outer circumference of the flagpole 100 is elevated.

Since the hoisting line 440 is also lifted along the flag F lifted by the hoisting unit 400, the ring member R formed larger than the diameter of the flagpole 100 wraps around the flagpole 100. It is provided with a flag (F) is easily acted on or under the hoisting.

As shown in the figure, the weight Z is formed in the shape of a globe, but this is only one embodiment and may be provided in a polygonal, conical or atypical shape.

However, in this embodiment, it was provided in a spherical shape to minimize the friction with the flagpole 100.

Next, look at the fixed rotation module 200 for elevating the flag (F) in the flagpole (100).

The fixed rotation module 200 is provided on the flag pole 100 is provided to rotate at least a portion along the circumference.

In addition, the fixed rotation module 200 is provided inside the flagpole 100 to be elevated together with the hoisting unit 400.

In detail, an opening 120 communicating with the receiving space 160 is formed at an inner upper portion of the flagpole 100, and the fixed rotation module 200 is coupled to the flagpole 100 through the opening 120 and fixedly rotated. The first through-hole 220 is formed to penetrate the module 200 up and down, the pulley 420 is coupled with the hoisting line 440 is fixed rotation module 200 and the fixed rotation module 200 is rotated together It includes a lifting unit 300 is provided to be elevated in the lower portion and the second through-hole 320 is formed so that the hoisting line 440 penetrating the first through-hole 220.

Here, the fixed rotation module 200 is a cap 240 for closing the opening 120 in a form surrounding the upper end of the flagpole 100, and is provided in the cap 240, the locking projection to be fitted with the end of the flagpole 100. 264 is formed and includes a rotary coupling member 260 having a bearing 262 connected to the cap 240.

The locking protrusion 264 is formed to protrude from the upper circumference of the rotary coupling member 260 to be bent downward, and the upper end of the flagpole 100 is inserted between the locking protrusion 264 and the rotary coupling member 260. do.

In this manner, the rotary coupling member 260 is fitted with the end of the flagpole 100 and then coupled and fixed through the fixing member 280, the inner coupling 262 of the rotary coupling member 260 cap 240 The cap 240 is rotated together with the bearing 262.

Here, the fixing member 280 may be provided in a bolt and nut coupling method or a stud coupling type, and may be variously changed as long as the rotating coupling member 260 is fixed to the flag pole 100 after being pressed together. Of course, this does not limit the scope of rights.

The structure of the bearing 262 of the fixed rotation module 200 and the lifting unit 300 will be described in detail with reference to FIG.

Subsequently, the cap 240 is seated in the opening 120 and rotated as described above, and a part of the circumference of the cap 240 is pulley 420 coupled to the hoisting line 440 via the pulley 420. ) Is inserted into the first through hole 220.

The fixed rotation module 200 is provided with a first through hole 220 is eccentrically rotatable at the center of the fixed rotation module 200, the pulley 420 is to be mounted adjacent to the first through hole 220 The extension member 422 is formed to be able to.

The extension member 422 is coupled to one side so that the pulley 420 is rotatable on both sides of the pulley 420, the other side is extended to be coupled to the outer upper portion of the fixed rotation module 200.

The extension member 422 maintains the gap so that the pulley 420 may be spaced apart from the upper portion of the fixed rotation module 200 by the pulley 420.

At this time, it is preferable that the extension member 422 extends the pulley 420 so that the pulley 420 is provided on the outer side of the circumference of the flagpole 100 so as to space the pulley 420 so that the flag F is easily lifted.

Subsequently, the lifting unit 300 has a second through hole 320 formed thereon and is provided to be elevated on the receiving space 160 inside the fixed rotation module 200.

In addition, a hoisting line 440 penetrating the first through hole 220 is inserted into the second through hole 320.

Here, the hoisting line 440 is inserted into the second through-hole 320 through the first through-hole 220 and the lifting unit 300 raises and lowers the flag F through the hoisting line 440.

In this embodiment, the lifting unit 300 is formed in a cylindrical shape is provided with a hoisting line 440 is fixed, the movement hole 340 is formed in a part of the circumference.

The hoisting line 440 is coupled to the lifting unit 300, the hoisting line 440 may be inserted into the groove penetrating the lifting unit 300, or the hoisting line 440 is the lifting unit 300 The knot may be formed in the lower portion of the elevating part 300 by penetrating upward and downward.

The lifting rope 360 is connected to the moving hole 340 formed around the lifting unit 300.

Lift line 360 is configured to grip when the user pulls the lift unit 300 to move the flag (F) to the top, if the flag is moved to the upper lift line 360 is tied to the flagpole 100 knot You lose.

To this end, a fixing hole 140 is formed in a part of the circumference of the flagpole 100.

At least one fixing hole 140 is formed, and serves as a passage for the user to move the lifting unit 300 downward from the flag pole 100.

Meanwhile, the lifting unit 300 moves the lifting unit 300 upward by releasing the lifting line 360 to lower the flag F. At this time, the lifting unit 300 is located on the bottom surface of the fixed rotation module 200. Stopping the falling of the flag (F) while contacting.

Subsequently, the movement of the flag F along the fixed rotation module 200 and the lifting unit 300 will be described with reference to FIGS. 5 to 8.

5 is a schematic view showing the lifting unit 300 in the flag lifting pole according to an embodiment of the present invention, Figure 6 shows a structure that is rotated by the wind in the flag pole according to an embodiment of the present invention 7 is a plan view, and FIG. 7 is a view illustrating a structure in which a flag moves downward as the lifting unit 300 moves upward in a flag pole according to an embodiment of the present invention, and FIG. 8 is an embodiment of the present invention. As the lifting unit 300 is moved to the lower portion in the flag pole according to the diagram showing a structure that the flag is moved upward.

As shown in the upper part of the fixed rotation module 200, the pulley 420 is coupled to the upper spaced apart by the extension member 422, the hoisting line 440 via the pulley 420 is the first through hole ( 220).

The first through-hole 220 is formed in a predetermined eccentric from the top of the fixed rotation module 200 according to the position where the pulley 420 is coupled to be provided in the form protruding around the outer side of the flagpole 100. The pulley 420 is to have the effect of minimizing the force supporting the flag (F).

Here, the hoisting line 440 inserted into the first through-hole 220 is inserted into the second through-hole 320 through one side thereof through the first through-hole 220 through the pulley 420, the moving hole 340 The lifting rope 360 connected to) is connected to the fixing hole 140 to fix the position along the vertical direction of the flag (F).

In this case, the lifting unit 300 may be wound around the fixing hole 140 and knotted.

Continue

Here, the lifting unit 300 is provided with a plurality of moving holes 340 to facilitate the knot of the lifting rope 360, the lifting rope 360 is knotted in at least one of the moving holes 340, 520. Can be built and fixed.

The flag F is moved upward by the lifting unit 300 moved downward.

On the other hand, the fixed rotation module 200 is rotated in response to the wind (W) together with the hoisting unit 400 in response to the rotation of the flag (F).

As described above, the center portion of the rotation coupling member 260 is formed in the form of a bearing 262.

Specifically, the bearing 262 and the cap 240 having the first through hole 220 formed in the center thereof are coupled to the screw so that they move together in response to the rotation of the flag F.

Accordingly, the fixed rotation module 200 may seal the opening 120 through the cap 240, and may be rotated by the bearing 262 disposed at the center thereof.

The shape of the bearing 262 is applied to the fixed rotary module 200 and the lifting unit 300, even if the fixed rotating module 200 and the lifting unit 300 is fixed to the inner surface of the accommodation space 160 ( 400 may be rotated.

The configuration of the present invention has been described above. Next, the rotation and hoisting of the flag holder of the present invention will be described in detail with reference to FIGS. 6 to 8.

As shown in the figure, a hoisting unit 400 is provided on the top of the fixed rotation module 200, and a flag F is coupled to the hoisting line 440 disposed along the outer circumference of the flagpole 100.

In FIG. 6A, the wind W is blowing toward the flag F from the left side according to the present embodiment.

In the related art, the flag F is entangled by the wind W or the hoisting line 440 is frequently twisted.

However, as shown, the hoisting line 440 is provided with only one line on the outside of the flagpole 100 does not cause twisting.

In addition, when the wind (W) is blown can be seen through the appearance of Figure 6 (b) to rotate without responding to the wind (W).

Therefore, it is possible to prevent the phenomenon that the wind (W) is blown to determine the shape of the flag (F).

In conclusion, as the wind (W) is blown while the fixed rotation module 200 is rotated without being countered by the wind (W).

In addition, the flag (F) and the hoisting unit 400 is rotated around the fixed rotation module 200 so that the twisting of the wires does not occur.

Here, when the fixed rotation module 200 is rotated in one direction by the wind (W), the lifting unit 300 connected to the fixed rotation module 200 and the hoisting line 440 may also move together.

As the wind (W) is blown into the flag (F) in this form, the hoisting unit 400 and the fixed rotation module 200 is rotated together with the flag (F) so that no twisting occurs and damage to the equipment does not occur. It has the advantage of being.

Next, the fixed rotation module 200 will be described.

In FIG. 7, the lifting unit 300 is disposed adjacent to the fixed rotation module 200, and the flag F is disposed at the lower side of the flag pole 100.

Since the lifting unit 300 and the flag F are connected by the hoisting line 440, the flag F is raised and lowered in response to the lifting of the lifting unit 300.

Here, the lifting unit 300 is limited to the position to be moved upward by the fixed rotation module 200 at the top, at this time the flag (F) is completely lowered.

And according to the position of the flag (F) is fixed to the lifting rope (360) extending from the lifting unit 300 to the fixing hole 140 to stop the flag (F) to easily hoist the flag (F) in accordance with the situation to be hoisted can do.

Since the weight Z is provided on the outside of the flagpole 100, the lifting unit 300 is raised upward.

And when moving the lifting unit 300 through the lifting rope 360 coupled to the lifting unit 300, the flag (F) is moved to the top.

As shown in FIG. 7, the flag F moves upward as the elevator 300 moves downward.

At this time, the hoisting line 440 extending under the flag F is provided in the form of wrapping the circumference of the flagpole 100 through the weight Z.

Therefore, in response to the movement of the flagpole 100, it can move up and down along the circumference of the flagpole 100.

Subsequently, when the lifting unit 300 descends and the flag F is moved to a predetermined position, the lifting unit 360 is fixed to the fixing hole 140.

In order to hoist the flag F, the user may hoist by pulling the hoisting line 360 from outside the flagpole 100, or coupled to a separate winding motor (not shown) to lift the flag F. Can be.

Therefore, the flag F may be hoisted or lowered by the winding motor.

Next, the structure of the lifting unit 300 will be described in detail with reference to FIGS. 9 and 10.

9 is a view showing the lifting unit 300 in the flag pole according to an embodiment of the present invention, Figure 10 is a view showing a modified example of the lifting unit 300 in the flag pole according to an embodiment of the present invention. .

As shown, the lifting unit 300 is formed in a cylindrical shape, the movement hole 340 is formed in a portion of the circumference.

And the hoisting line 440 penetrating the first through-hole 220 inside the lifting unit 300 is fixed.

The lifting rope 360 is knotted and fixed to the moving hole 340, and fixed to the fixing hole 140 to stop the lifting of the flag F.

The lifting unit 300 may include a plurality of moving holes 340.

As illustrated in FIG. 10, a panel member 370 having a separate panel shape is coupled to the moving hole 340 around the elevating unit 300, and the panel member 370 includes a plurality of moving holes 340. Formed. And the hoisting line 440 penetrates the lifting unit 300 is knotted at the bottom.

As such, the lifting unit 300 may be provided in various forms. If the hoisting line 440 is fixed and has a volume not inserted into the first through-hole 220 in the fixed rotation module, the lifting unit 300 may be formed in various shapes. If the movable hole 340 is formed at the side and can be coupled to the fixing hole 140, the movement hole 340 is not limited to the present embodiment and may be modified in various forms.

As described above, a preferred embodiment according to the present invention has been described, and the fact that the present invention can be embodied in other specific forms in addition to the above-described embodiments without departing from the spirit or scope thereof has ordinary skill in the art. It is obvious to them. Therefore, the above-described embodiments should be regarded as illustrative rather than restrictive, and thus, the present invention is not limited to the above description and may be modified within the scope of the appended claims and their equivalents.

Claims

A flagpole formed to be long and having an accommodating space therein and having a fixing hole communicating with the accommodating space;

A fixed rotating module rotatably coupled to the upper end of the flagpole with a rotational shaft, the fixed rotating module rotating at least a portion in the circumferential direction of the flagpole by an external force;

A hoisting unit coupled to the fixed rotation module at the upper portion of the flagpole and a hoisting rope formed to be long and having a flag fixed to the outside of the flagpole and accommodated in the accommodation space via the pulley; And

An elevating unit fixed to the hoisting line to be elevated in the accommodation space and limiting the position where the flag is made while being in contact with the fixed rotating module;

Flag gaiters including.
The method of claim 1,

The fixed rotation module,

A cap coupled in a form surrounding the upper portion of the flagpole; And

A rotatable member provided inside the cap to form a protrusion to be fitted with the end of the flagpole and having a bearing connected to the cap therein;

Including;

The flag coupling rod is screwed to the rotating coupling member and the flagpole.
The method of claim 1,

The fixed rotation module,

And a first through hole into which the hoisting line is inserted, and the first through hole is formed with a predetermined eccentricity about the rotation axis along the vertical direction.
The method of claim 3,

The lifting unit,

The flag pole is provided to be raised and lowered under the fixed rotation module, the second through hole is formed in the center through which the hoisting line penetrates the first through hole.
The method of claim 4, wherein

The lifting unit,

At least one moving hole is formed in a part of the circumference so as to fix the lifting unit to the fixing hole.
The method of claim 4, wherein

The lifting unit,

And a moving member in which a plurality of moving holes are formed in a portion of a circumference so as to fix the lifting unit to the fixing hole.
The method according to claim 5 or 6,

The lifting unit,

It is formed long and the end is fixed to the moving hole, the flag gazebo comprising a lifting rope is fixed to the fixed hole.
The method of claim 1,

The hoisting unit,

Separate winding motor (WINDING-MOTOR) is provided on the outside,

An end of the hoisting line extending to the outside through the fixing hole is coupled to control the flag so as to lift the flag.
The method of claim 1,

The hoisting unit,

A ring-shaped annular member is formed at an end to surround the flagpole, and the annular member is provided to be capable of lifting in the longitudinal direction of the flagpole corresponding to the hoisting of the flag.
The method of claim 9,

The ring member,

Is provided in the lower portion of the flagpole, the flag pole to limit the hoisting line swinging by an external force.
The method of claim 9,

The hoisting unit,

And a weight weight is provided between the ring member and the bottom of the flag to expand the hoisting line.