JP2023007835A - Hoisting device - Google Patents

Abstract

To provide a hoisting device capable of hoisting and lowering a load by using a pendant rope and removing the pendant rope from the lifted load and the load installed on a floor face.SOLUTION: A hoisting device is a device for hoisting and lowering a load installed on a foundation floor surface and has a ceiling body, a ceiling pulley, a pendant rope, pendant rope hoisting/lowering means and load support means. As a result of the load support means supporting the load lifted to the ceiling body, connection between the load and the pendant rope can be released. As a result of the hoisting/lowering means lowering the pendant rope, the load connected to the pendant rope can be lowered. When the load is installed on the foundation floor surface, the connection between the load and the pendant rope can be released.SELECTED DRAWING: Figure 1

Description

TECHNICAL FIELD The present invention relates to a lifting device for lifting and lowering a suspended load, and more specifically, a lifting rope is used to lift and lower a suspended load, and a suspended load is lifted or suspended from the suspended load placed on the ground. It relates to a lifting device with a detachable rope.

A stadium is a facility for the purpose of playing a specific game or spectating the game, and typical examples thereof include a baseball field and a soccer field. However, the number of competitions (for example, the number of games) held at the stadium is generally about several tens throughout the year, so it is currently difficult to stably generate profits throughout the year.

Therefore, the Japan Sports Agency has decided to provide financial support for the formulation of stadium and arena development plans through public-private partnerships. We are promoting the development of facilities in The goal is to develop multi-functional and complex stadiums and arenas throughout the country by 2025, with an emphasis on earning money.

A multi-purpose stadium that can be used for baseball, soccer, concerts, etc. is extremely suitable for revenue because it provides opportunities to attract customers on a regular basis throughout the year. Suggestions have been made. For example, Patent Literature 1 proposes a multi-purpose stadium in which the width (area) of the field is variable by planarly moving (sliding) some of the outer walls installed around the field.

Japanese Patent Application Laid-Open No. 2020-33721

The multi-purpose stadium disclosed in Patent Document 1 can form an event space narrower than a normal competition space by planarly moving the movable wall, and by planarly moving the entire field. A stadium where the field can be removed from the event space. As a result, it is possible to hold soccer matches, etc., which is the original use of the stadium. Various events can be held without worrying about damaging the natural turf. As described above, the invention disclosed in Patent Document 1 can achieve many purposes very effectively. However, since the movable wall moves in a plane, it is not possible to hold various events while maintaining the competition space. I had a problem.

In order to hold competitions and various events while maintaining the same space, prepare a field for competitions (e.g. grass field) and a floor for events (e.g. concrete floor or flooring) and have a two-layer structure. It is conceivable that When a soccer game or the like is held, the game field is placed on the ground level, while when a concert or the like is held, the game field is lifted high to make the event floor available.

Usually, when lifting a heavy suspended load such as a competition field, lifting means such as a winch (hereinafter referred to as "lifting means") and suspension ropes (wire ropes, etc.) are used. The most familiar example is an elevator, where one end of a suspension rope is fixed to a hatch (passage space) via a pulley, and the lifting means raises and lowers the hatch by winding up and down the suspension rope.

By the way, in a conventional hoist (lifting device) using a suspension rope such as an elevator, the suspension rope and a suspended load (for example, an elevator hatch) are always connected and never released. rice field. Therefore, if you try to raise or lower the competition field using the suspension ropes as before, the suspension ropes and the competition field are always connected. A large number of hanging ropes are connected to each other, which is extremely inconvenient for both the competitors and the spectators.

An object of the present invention is to solve the problems of the prior art, that is, it is possible to lift and lower a suspended load using a suspension rope and remove the suspension rope from the suspended load placed on the floor surface. To provide a lifting device capable of

In the present invention, a locking device is provided at the lower end of the suspension rope, and a locked device is provided on the suspended load. This invention was developed with a focus on the point that it is possible to disconnect the connection between the suspension rope and the suspended load by supporting the suspended load with the suspended load support means. is.

A lifting device of the present invention is a device for lifting and lowering a suspended load placed on a base floor, and comprises a ceiling body, a ceiling pulley, a suspension rope, a suspension rope lifting means, and a suspension load support means. be. The ceiling body is installed at a position higher than the base floor surface, and the ceiling pulley is rotatable in a substantially vertical (including vertical) plane and attached to the ceiling body. The suspension rope hangs around the ceiling pulley and hangs down, the suspension rope lifting means is means for lifting and lowering the suspension rope, and the suspension load support means is means for supporting the suspension load. In addition, the hanging rope and the load are connected by locking the locking device attached to the lower end of the suspended hanging rope to the locked device of the suspended load, and the lifting means pulls up the hanging rope to attach it to the hanging rope. The connected suspended load rises. By supporting the suspended load raised to the ceiling by the suspended load support means, the connection between the suspended load and the suspension rope can be released. ). In addition, the lifting means lowers the suspension rope so that the suspended load connected to the suspension rope can be lowered, and when the suspended load is placed on the base floor surface, the suspended load and the suspension rope are disconnected. becomes possible.

In the lifting device of the present invention, the locked member may be a projecting body projecting sideways from the side surface of the suspended load. In this case, the ceiling pulley is movable in the vertical plane in an oblique direction. By moving the ceiling pulley upward and toward the suspended load, the locking device abuts on the lower side of the locked device. is locked to the locked tool.

The lifting device of the present invention can also have a plurality of ceiling pulleys attached to the ceiling body along the main axis (horizontal axis). Suspension ropes are hung around the respective ceiling pulleys. In this case, the fixtures to be locked are provided in series along the side surface of the suspended load and are comb-shaped with notches formed at a plurality of locations, and the fixtures are attached to the lower ends of the plurality of suspension ropes. It is assumed to be rod-shaped or column-shaped (arranged in the direction of the main axis). Then, in a state in which each suspension rope is placed in the notch of the suspended load placed so that the side surface is in the direction of the main axis, the locking device is brought into contact with the lower part of the device to be locked. , the to-be-locked tool is locked.

The lifting device of the present invention can also be configured to include a left ceiling body and a right ceiling body, the ceiling bodies of which are arranged at substantially the same (including the same) height. The ceiling pulley in this case includes a left ceiling pulley attached to the left ceiling body and a right ceiling pulley attached to the right ceiling body. The hanging rope lifting means includes a left lifting rope lifting means for lifting the left lifting rope and a right lifting rope lifting means for lifting the right lifting rope. The load supporting means includes left suspended load supporting means and right suspended load supporting means. Between the left suspension rope hanging from the left ceiling pulley and the right suspension rope hanging from the right ceiling pulley, the left side is arranged in the direction of the main axis and on the side of the left suspension rope, and the right side is arranged in the direction of the main axis and on the side of the right suspension rope. When the suspended load is placed on the base floor so that it is arranged in the The suspension rope and the suspended load are connected by locking the locking device of the right hanging rope to the locking device provided on the surface. Then, the left lifting means pulls up the left suspension rope and the right lifting means pulls up the right suspension rope, so that the suspended load connected to the suspension rope is lifted, and the suspended load that has risen to the ceiling body is the left suspended load support means. It is supported by the right suspended load support means.

The lifting device of the present invention may further include slide movement means. The slide movement means is a means for sliding the suspended load supported by the left suspended load supporting means and the right suspended load supporting means in the direction of the main axis.

The lifting device of the present invention has the following effects.
(1) For example, when used as a stadium for soccer, baseball, etc., the originally intended competition (soccer, baseball, etc.) can be held, and various kinds of concerts and other events can be held while maintaining the same space as those competitions. can hold events. That is, it can be applied to various uses, and as a result, the operating rate of the stadium can be increased.
(2) It is possible to remove the suspension rope from the suspended load (for example, field) placed on the floor and further wind up the suspended rope. When it is used as a field, the competition can be held as usual, and the competition can be favorably watched.
(3) Since the lifted load is supported by the lifted load support means, the lifted load can be safely supported. Moreover, by removing the suspension rope from the suspended load, the tension force acting on the suspension rope can be released.

BRIEF DESCRIPTION OF THE DRAWINGS Sectional drawing which shows typically an example of the lifting apparatus of this invention. BRIEF DESCRIPTION OF THE DRAWINGS The top view which shows typically an example of the lifting apparatus of this invention. (a) is a vertical cross-sectional view seen in the direction along the side of the suspended load, and (b) is a vertical cross-sectional view seen in the AA arrow direction shown in (a). A front view schematically showing a bar-shaped locking tool attached to the lower ends of a plurality of hanging ropes. (a) is a vertical cross-sectional view schematically showing suspended load support means housed in the ceiling body, and (b) is a vertical cross-sectional view schematically shown the suspended load support means pulled out from the ceiling body. (a) is a vertical sectional view schematically showing the ceiling pulley moved obliquely upward from the normal position, and (b) is a vertical sectional view schematically showing the ceiling pulley moved diagonally downward from the normal position. FIG. 4 is a top plan view of a field that is slidably moved in the direction of the main shaft by slide movement means; FIG. 4 is a flow chart showing the flow of main procedures for lowering the field supported by the suspended load support means near the ceiling to the base floor; FIG. 4 is a step diagram showing a main procedure for lowering the field supported by the suspended load support means near the ceiling to the base floor; FIG. 4 is a flowchart showing the flow of main procedures for raising the field 200 placed on the base floor surface to the ceiling body 101. FIG. FIG. 4 is a step diagram showing a main procedure for raising the field 200 placed on the base floor surface to the ceiling body 101;

An example of an embodiment of the lifting device of the present invention will be described based on the drawings.

1. Overall outline The lifting device of the present invention is a lifting load placed on a flat surface such as an outdoor ground surface, an indoor floor surface, or a ground level surface of a stadium (hereinafter referred to as "foundation floor surface" for convenience). It is a device that raises and lowers (raises and lowers) a ceiling body, a ceiling pulley, a suspension rope, a suspension rope lifting means, a suspension load support means, and the like. The "ceiling body" is installed at a position higher than the foundation floor surface, and can withstand a considerable applied load (especially vertical force and bending moment associated with vertical force) such as concrete slabs and steel truss structures. It is a structure that can resist.

A "ceiling pulley", which is a pulley that can rotate in a substantially vertical plane (including a vertical plane), is attached to the side of the ceiling body and the space provided inside, and the "suspension rope" is this ceiling pulley It hangs around and hangs down. As the suspension rope, various materials can be used according to the weight of the load to be suspended. For example, wire ropes are preferably used in cases where the weight of the load to be suspended is large. At the lower end of the hanging rope suspended from the ceiling pulley, a hook or a rod-shaped locking device, which will be described later, is attached. A locking device is provided. Then, the suspension rope and the load are connected by locking the locking tool at the lower end of the suspension rope to the hooked tool of the load.

The "suspension rope lifting means" is a lifting device such as a winch or a hoist, and is installed on the side surface of the ceiling body or in the interior space like the ceiling pulley. In addition, the suspension rope lifting means can be raised by winding up the suspension rope and lowered by unwinding (unwinding). can be made The suspension rope lifting means, the ceiling pulley, and the suspension rope are arranged in substantially the same (including the same) vertical plane, and each function as a set. For the sake of convenience, a series of combinations consisting of will be referred to as an "elevator set" here.

The "suspended load support means" supports the suspended load raised to the height of the ceiling body, and is a so-called stopper that supports the suspended load so that it does not fall from its position (near the ceiling body). For example, the suspended load support means can be put in and taken out from the ceiling body (slidable to the left and right), and the suspended load support means pulled out from the ceiling body can be arranged on the lower surface of the ceiling body or inserted into a part of the ceiling body. By doing so, the suspended load can be supported. The suspended load support means can support the suspended load by itself without the need for other means. The suspended load is maintained at that position (does not drop) even if the latching of the fixture and the suspended load is released.

The lifting device of the present invention is configured as described above, so that the suspended load placed on the base floor can be lifted, and the suspended load raised to the ceiling can be supported. . Specifically, when the hanging rope lifting means lowers the hanging rope to lower the locking device at the lower end of the rope, and when the locking device that has descended to the suspended load is locked to the locked device, the hanging rope is lifted and lowered this time. The means winds up the suspension rope to raise the suspended load connected to the suspension rope, and the suspended load raised to the ceiling body is supported by the suspended load support means, thereby locking the locking device and the locked device. can be released.

2. Lifting Device FIG. 1 is a cross-sectional view (a view cut along a vertical plane) schematically showing an example of the lifting device 100 of the present invention, and FIG. 2 is a plan view (viewed from above) shown in FIG. The lifting device 100 of the present invention can use any object as a suspended load, but for the sake of convenience, an example in which a soccer field 200 in a soccer stadium is used as the suspended load will be described.

When targeting a relatively large plate-shaped (or box-shaped) suspended load such as the field 200, each element of the lifting device 100 of the present invention is arranged on both sides of the suspended load, as shown in FIG. do it. That is, as shown in FIG. 1, the ceiling body 101 includes a left ceiling body 101L and a right ceiling body 101R. The hanging rope lifting means 104 includes the left hanging rope lifting means 104L and the right lifting rope lifting means 104R, and the suspended load support means 105 includes the left suspended load support means 105L and the right suspended load support. means 105R, and the locking device 106 includes a left locking device 106L and a right locking device 106R. The left ceiling body 101L, the left ceiling pulley 102L, the left suspension rope 103L, the left suspension rope lifting means 104L, the suspension load support means 105L, and the left locking tool 106L are formed in a plate-like (or box-like) field 200. The right ceiling body 101R, the right ceiling pulley 102R, the right suspension rope 103R, the right suspension rope lifting means 104R, the suspension load support means 105R, and the right locking tool 106R are arranged in the field. 200 is arranged on the right side 201R side (right side in the drawing). The left ceiling body 101L and the right ceiling body 101R are arranged at substantially the same (including the same) height.

When targeting a relatively large plate-shaped (or box-shaped) suspended load such as the field 200, as shown in FIG. A series of combinations)” should be placed. For example, in FIG. 2, 12 elevator sets are arranged on each of the left ceiling body 101L and the right ceiling body 101R. In this case, a plurality of ceiling pulleys 102 (left ceiling pulley 102L, right ceiling pulley 102R) are arranged along the same horizontal axis (hereinafter referred to as "main axis"), and a plurality of hanging ropes are arranged along the same main axis. Elevating means 104 (left hoisting rope hoisting means 104L, right hoisting rope elevating means 104R) may be arranged. In addition, the suspension rope 103 (left suspension The rope 103L and the right suspension rope 103R) are preferably arranged in the direction of an axis (hereinafter referred to as "secondary axis") perpendicular to the main axis.

In addition, when each element of the lifting device 100 is arranged on both sides of the suspended load and a plurality of lifting body sets are arranged in the main axis direction, the field 200 (suspended load) on the base floor is arranged along the main axis direction. do it. Specifically, between the left suspension rope 103L hanging down from the left ceiling pulley 102L and the right suspension rope 103R hanging down from the right ceiling pulley 102L, the left side 201L of the field 200 is on the left suspension rope 103L side and on the right side. Further, the left side surface 201L of the field 200 is substantially parallel (including parallel) to the left main axis direction so that the surface 201R is on the right suspension rope 103R side, and the right side surface 201R is substantially parallel (including parallel) to the right main axis direction. ), the field 200 is arranged. As described above, the lifting device 100 of the present invention is not limited to the configuration in which each element is arranged on both sides of the suspended load, or the configuration in which a plurality of lifting body sets are arranged in the main axis direction. Depending on the shape of the load, it is also possible to arrange each element only on one side of the suspended load, or to arrange one lifting body set.

A locking device 106 attached to the lower end of the suspension rope 103 connects the suspension rope 103 and the field 200 by being locked to a locking device of the field 200 (suspended load). A hook can be used as the stopper 106, and an annular jig (such as an eyebolt) can be used as the to-be-locked tool. Alternatively, as shown in FIG. 3, a "protrusion 202" can be used as a member to be locked. 3A and 3B are diagrams schematically showing the projections 202 formed on the side surface 201 of the field 200, and FIG. 3(b) is a vertical cross-sectional view seen in the direction of arrows AA shown in FIG. 3(a) (the secondary axis direction shown in FIG. 2). As shown in FIG. 3A, the projecting body 202 has a shape protruding from the side surface 201 of the field 200, and a concave portion (a semicircular concave portion in the figure) is formed on the lower surface side thereof. When the field 200 is lifted by the suspension ropes 103 on both sides (the left suspension rope 103L and the right suspension rope 103R), the objects to be locked such as the protrusions 202 are of course both side surfaces 201 (the left side surface 201L and the right side surface). 201R).

When using the projecting body 202 as the member to be locked, it is preferable to use the rod-shaped one shown in FIG. 4 as the locking member 106 . The rod-shaped locking device 106 is rod-shaped or column-shaped with an axial dimension greater than its cross-sectional dimension, and can be solid or hollow (that is, tubular). Also, one rod-shaped locking device 106 can be attached to the lower ends of a plurality of suspension ropes 103. For example, in FIG. there is Of course, it is not limited to the example of FIG. A rod-shaped locking tool 106 can also be attached to the lower end of the .

The rod-shaped locking tool 106 is locked by coming into contact with the lower part of the projecting body 202 (to-be-locked tool). For example, in FIG. 3A, a portion of a bar-shaped locking tool 106 is fitted into a recess formed on the lower surface side of the protrusion 202 to lock. Therefore, it is desirable that the cross-sectional shape of the locking member 106 should match the shape of the concave portion of the protrusion 202, such as a circular shape or a semi-circular shape.

By the way, when a suspended load such as the field 200 is targeted, a series of to-be-locked members (for example, projections 202) are provided along the side surfaces 201 (the left side surface 201L and the right side surface 201R) of the field 200. However, if one rod-shaped locking device 106 is attached to the lower ends of the plurality of suspension ropes 103, the suspension rope 103 will interfere with the device to be locked. In this case, as shown in FIG. 3(b), notches 203 are formed at a plurality of locations on a protrusion 202 (to-be-engaged member) so that the protrusion 202 is shaped like a comb. By arranging the suspension rope 103 in the notch 203 , it is possible to fit the rod-shaped locking tool 106 into the concave portions of all the protrusions 202 . In FIG. 3(b), a plurality of independent protrusions 202 are installed at intervals. A notch 203 may be formed in the portion where the hanging rope 103 is arranged.

The suspended load support means 105 can be accommodated in the ceiling body 101 and can be slidable to the left and right (the secondary axis direction shown in FIG. 2) so that it can be pulled out from the ceiling body 101 . FIG. 5 is a vertical sectional view schematically showing the suspended load support means 105 that can slide left and right, (a) showing the suspended load support means 105 accommodated in the ceiling body 101, and (b) The load support means 105 are shown withdrawn from the body 101 . In this case, when the field 200 rises, the suspended load support means 105 is accommodated in the ceiling body 101 so as not to hinder the rise, while the field 200 is supported after the field 200 rises. Therefore, the suspended load support means 105 can be pulled out from the ceiling body 101 . In order to slide the suspended load support means 105, it is possible to use various conventionally used power sources, such as using a hoisting device such as a winch, or using hydraulic pressure, pneumatic pressure, electric power, or the like. can. In addition, a plurality of independent load support means 105 can be arranged side by side in the direction of the main axis (FIG. 2), or an integrated suspended load support means 105 can be installed continuously in the direction of the main axis.

The ceiling pulley 102 can also be configured to be obliquely movable in a vertical plane. FIG. 6 is a vertical cross-sectional view schematically showing the ceiling pulley 102 that can move diagonally in the vertical plane. The pulley 102 is shown, and (b) shows the overhead pulley 102 moved obliquely downward from the normal position (the position of the broken line shown in the drawing). In this case, by moving the ceiling pulley 102, the locking device 106 can be locked to the locked device (for example, the protrusion 202) of the field 200, and the locking can be released. Specifically, as shown in FIG. 6(a), when the ceiling pulley 102 moves diagonally upward from the normal position (the position indicated by the broken line in the figure), the locking device 106 slides under the protrusion 202. As a result, the bar-shaped locking tool 106 can be fitted into the concave portion of the protrusion 202 . On the other hand, as shown in FIG. 6(b), when the ceiling pulley 102 moves obliquely downward from the normal position (the position indicated by the broken line in the figure), the locking member 106 is disengaged from the arrangement below the protrusion 202, and as a result, The locking between the protrusion 202 and the locking tool 106 is released. It should be noted that it is preferable to adopt a configuration using hydraulic pressure since the movement of the suspended load support means 105 is sufficient by about 50 to 100 cm, but it is also possible to use various types of conventionally used power.

The lifting device 100 of the present invention further comprises a "slide movement means" for horizontally moving the suspended load supported by the suspended load support means 105 (the suspended load support means 105L and the suspended load support means 105R) in the direction of the main axis. can also be FIG. 7 is a top plan view of the field 200 being slid in the direction of the main shaft by the slide movement means. In this case, the use on the base floor after the field 200 is raised (ie removed) is diversified. That is, in rainy weather, the field 200 is not slid to be used as a roof, but in fine weather, the field 200 is slid by the sliding means. In order to slide the field 200, it is possible to use various conventional power sources, such as using a hoisting device such as a winch, or using hydraulic pressure, pneumatic pressure, electric power, or the like. In FIG. 7, the left field 200L and the right field 200R, which are divided into two, are slid in opposite directions. It can also be a specification that allows

3. Example of Use An example of lowering the field 200 to the base floor using the lifting device 100 of the present invention will be described with reference to FIGS. 8 and 9. FIG. FIG. 8 is a flow chart showing the flow of the main procedure for lowering the field 200 supported by the suspended load support means 105 near the ceiling body 101 to the base floor surface, and FIG. FIG. 4 is a step diagram showing a main procedure for lowering the field 200 supported by the support means 105 to the base floor;

First, the engaging tool 106 is engaged with the engaging tool (for example, the projecting body 202) of the field 200 supported by the suspended load support means 105 near the ceiling body 101 (Step 11 in FIG. 8). For example, as shown in FIG. 6B, when the ceiling pulley 102 is positioned diagonally downward from the normal position (the position indicated by the broken line in the figure), the ceiling pulley 102 is moved diagonally upward so as to return to the normal position. , and the rod-shaped locking member 106 is fitted into the concave portion of the protrusion 202 .

As shown in FIG. 9A, when the locking device 106 is locked to the projecting body 202, the support of the field 200 by the suspended load support means 105 is released (Step 12 in FIG. 8). For example, as shown in FIG. 6(a), the ceiling pulley 102 is moved obliquely upward from the normal position (the position indicated by the broken line in the figure) to lift the field 200 by a small amount. As a result, the suspended load support means 105 is released from the weight of the field 200, and can be slid to be accommodated in the ceiling body 101 as shown in FIG. 9(b). The support of the field 200 by the suspended load support means 105 is released.

When the support of the field 200 by the suspended load support means 105 is released, the ceiling pulley 102 is returned to the normal position, and the suspension rope 103 is lowered by the suspension rope lifting means 104, as shown in FIG. 9(c). The field 200 locked by the locking tool 106 is lowered to the base floor (Step 13 in FIG. 8). Then, when the field 200 lands on the base floor surface, the projection 202 and the locking tool 106 are unlocked (Step 14 in FIG. 8). For example, as shown in FIG. 9(d), the ceiling pulley 102 is moved obliquely downward from the normal position to release the engagement between the protrusion 202 and the engagement member 106. Then, as shown in FIG.

When the protrusion 202 and the locking tool 106 are unlocked, the hanging rope lifting means 104 winds up the suspension rope 103, and as shown in FIG. Step 15 in FIG. 8). As a result, the hanging ropes 103 are removed from the vicinity of the field 200 (that is, the ground level), creating a favorable environment for both players and spectators.

Next, an example of raising the field 200 to the ceiling body 101 using the lifting device 100 of the present invention will be described with reference to FIGS. 10 and 11. FIG. FIG. 10 is a flow chart showing the flow of main procedures for raising the field 200 placed on the base floor to the ceiling body 101, and FIG. 11 shows the flow of the field 200 placed on the base floor. It is a step figure which shows the main procedures raised to the ceiling body 101. FIG.

First, the suspension rope 103 is lowered by the suspension rope lifting means 104, and the locking device 106 is lowered as shown in FIG. 11(f) (Step 21 in FIG. 10). Then, when the locking device 106 descends to the field 200, the locking device 106 is locked to the projecting body 202, and the hanging rope 103 and the field 200 are connected (Step 22 in FIG. 10). For example, as shown in FIG. 11(g), the ceiling pulley 102 positioned obliquely downward from the normal position is moved obliquely upward so as to return to the normal position, and the locking tool 106 is locked to the protrusion 202. .

When the locking device 106 is locked to the protrusion 202, the suspension rope 103 is hoisted up by the lifting rope lifting means 104, and as shown in FIG. Increase to 101 (Step 23 in FIG. 10). When the field 200 rises to the ceiling body 101, the suspended load support means 105 is slid and pulled out from the ceiling body 101 as shown in FIG. 11(i) (Step 24 in FIG. 10). At this time, the field 200 is lifted so that there is a slight gap between the lower surface of the field 200 and the suspended load support means 105. In other words, the weight of the field 200 is entirely borne by the lifting body set. The suspended load support means 105 can be pulled out smoothly.

When the suspended load support means 105 is pulled out from the ceiling body 101, the field 200 is supported by the suspended load support means 105 (Step 25 in FIG. 10). Specifically, the suspension rope 103 is slightly lowered by the suspension rope lifting means 104, and the field 200 is lowered as shown in FIG. 11(j). As a result, the gap between the lower surface of the field 200 and the suspended load support means 105 disappears, that is, the dead load support means 105 bears the entire weight of the field 200 . When the field 200 is to be slid in the direction of the main axis, the projection 202 and the locking tool 106 are unlocked (Step 26 in FIG. 10). For example, as shown in FIG. 11(k), the ceiling pulley 102 is moved obliquely downward from the normal position to release the locking between the projection 202 and the locking tool 106 . As a result, the tension force acting on the suspension rope 103 can be released, and as a result, damage to the suspension rope 103 is reduced, enabling long-term use. After that, the field 200 is slid in the main axis direction by the slide movement means.

The lifting device of the present invention can be used in various facilities such as various sports facilities such as soccer stadiums, baseball stadiums, and track and field stadiums, and entertainment facilities for various events such as concerts, exhibitions, and product exhibitions. can be done.

100 Lifting device of the present invention 101 Ceiling body (of lifting device) 101L (Ceiling body) Left ceiling body 101R (Ceiling body) Right ceiling body 102 Ceiling pulley (of lifting device) 102L Left (ceiling pulley) Ceiling pulley 102R Right ceiling pulley (of ceiling pulley) 103 Suspension rope (of lifting device) 103L Left suspension rope (of suspension rope) 103R Right suspension rope (of suspension rope) 104 Suspension rope lifting means 104L (of lifting device) Left suspension rope lifting means (of suspension rope lifting means) 104R Right suspension rope lifting means (of suspension rope lifting means) 105 Suspended load support means (of lifting device) 105L Suspended load support means (of suspension load support means) 105R ( Load Support Means 106 Lock (of Lifting Device) 106L Left Lock (of Lock) 106R Right Lock (of Lock) 200 Field 200L Left (of Field) Field 200R Right field (of field) 201 Side (of field) 201L Left side (of side) 201R Right side (of side) 202 Protrusion (of field) 203 Notch (of field)

Claims (5)

A device for lifting and lowering a suspended load placed on a base floor,
a ceiling body installed at a position higher than the base floor;
a ceiling pulley attached to the ceiling body and rotatable in a vertical or substantially vertical plane;
a suspension rope that hangs around the ceiling pulley and hangs down;
Suspension rope lifting means for lifting and lowering the suspension rope;
and a suspended load support means capable of supporting the suspended load,
The hanging rope and the suspended load are connected by engaging a locking device attached to the lower end of the hanging rope with a locked device of the suspended load,
The lifting means raises the suspended load connected to the suspension rope by pulling up the suspension rope,
By supporting the suspended load raised to the ceiling body by the suspended load support means, it is possible to disconnect the suspended load and the suspension rope,
The lifting means lowers the suspended load connected to the suspension rope by lowering the suspension rope,
When the suspended load is placed on the base floor surface, the connection between the suspended load and the suspension rope can be released.
A lifting device characterized by: The to-be-locked tool is a projecting body that protrudes laterally from the side surface of the suspended load,
The ceiling pulley is obliquely movable in a vertical plane,
By moving the ceiling pulley upward and to the suspended load side, the locking device abuts below the locked device, and the locking device is locked to the locked device.
The lifting device according to claim 1, characterized in that: A plurality of the ceiling pulleys are attached to the ceiling body along a main axis that is a horizontal axis, and the suspension rope is wound around each of the ceiling pulleys,
The to-be-locked tool is provided in series along the side surface of the suspended load and has a comb shape with notches formed at a plurality of locations,
The locking device is attached to the lower ends of the plurality of suspension ropes and has a rod shape or a column shape arranged in the main axis direction,
In a state in which each of the suspension ropes is placed in the notch of the suspended load placed so that the side faces are in the direction of the main axis, the locking device is brought into contact with the lower part of the device to be locked. The locking device and the locked device are locked by coming into contact with each other,
The lifting device according to claim 2, characterized in that: The suspended load has a plate-like or box-like shape having a left side and a right side,
The ceiling body includes a left ceiling body and a right ceiling body arranged at the same or substantially the same height,
The ceiling pulley includes a left ceiling pulley attached to the left ceiling body and a right ceiling pulley attached to the right ceiling body,
The suspension rope includes a left suspension rope that is wound around the front left ceiling pulley and a right suspension rope that is wound around the front right ceiling pulley,
The suspension rope elevating means includes left suspension rope elevating means for elevating the left suspension rope and right suspension rope elevating means for elevating the right suspension rope,
The suspended load support means includes left suspended load support means and right suspended load support means,
The suspended load is between the left suspension rope hanging from the left ceiling pulley and the right suspension rope hanging from the right ceiling pulley, and the left suspension rope is arranged such that the left side faces the main axis direction. and placed on the base floor so as to be arranged on the right suspension rope side so that the right side faces the main axis direction,
The locking device of the left suspension rope is locked to the locking device provided on the left side surface of the suspended load, and the locking device provided on the right side surface of the suspended load is connected to the locking device. The suspension rope and the suspension load are connected by locking the locking tool of the right suspension rope,
The left lifting means pulls up the left suspension rope and the right lifting means pulls up the right suspension rope, thereby raising the suspended load connected to the suspension rope,
The left suspended load supporting means and the right suspended load supporting means support the suspended load raised to the ceiling body,
The lifting device according to claim 3, characterized in that: further comprising slide movement means for slidingly moving the suspended load supported by the left suspended load support means and the right suspended load support means in the direction of the main axis,
The lifting device according to claim 4, characterized in that:

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