JPH11255486A - Elevator lifting device - Google Patents

Abstract

(57) [Summary] [PROBLEMS] To raise and lower an elevating body by a rope wound around a winding drum provided in a main body, so that the main body is not hindered by the winding drum. SOLUTION: A take-up drum 22 is attached to a lower part of a main body 5 connected to a link 4, and six ropes wound around the take-up drum 22 are hung down through a sheave to be connected to an elevating body (work table 32). So that the lifting body can be moved up and down by the rope. Thereby, the winding drum 22
Does not protrude above the main body 5, the take-up drum 22 does not hinder the lifting of the main body 5.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a lifting and lowering body such as a workbench, which is suspended and supported using a rope, and the rope is wound up with a winch and extended to raise and lower the lifting and lowering body. Related to the device.

[0002]

2. Description of the Related Art As shown in Japanese Patent Application Laid-Open No. 8-295484, three hanging points are arranged in an equilateral triangle on a lifting platform, and two ropes are attached to each of the hanging points and provided on a main body. Wrap two ropes around three winding drums, suspend the lifting platform on the main body with ropes so that the two adjacent ropes are almost V-shaped, and wind and unwind the ropes. There has been proposed an elevating device that raises and lowers an elevating platform.

[0003]

It is important that the take-up drum is attached to the main body in the above-described lifting device.
For example, it is preferable to mount the main body so that the winding drum does not hinder the upward movement of the main body.

Accordingly, an object of the present invention is to provide an elevating device for an elevating body capable of solving the above-mentioned problems.

[0005]

According to the first aspect of the present invention, the winding drum 22 is attached to a lower portion of the main body 5 so as not to protrude above the main body 5 and wound around the winding drum 22. This is an elevating device for the elevating body in which a plurality of ropes are hung and connected to the elevating body.

According to the first aspect of the present invention, the rope is wound up by the winding drum and then unreeled, whereby the elevating body moves up and down with respect to the main body 5.

Further, since the winding drum 22 does not protrude above the main body 5, the winding is performed when the main body 5 is moved up and down by a link or when the main body 5 is run along the rail of a tower crane or a portal crane. The drum 22 does not get in the way.

In addition, the winding drum 2 is provided below the main body 5.
2, the winding drum 22 can be mounted by effectively utilizing the space between the main body 5 and the elevating body.

According to a second aspect of the present invention, a single take-up drum 22 is mounted vertically below the main body 5 so as not to protrude above the main body 5, and a plurality of take-up drums 22 are spaced apart in the axial direction of the take-up drum 22. Characterized in that each rope is hung down through a sheave attached to the main body 5, and each of the ropes is connected to a plurality of positions of the elevating body.

According to the second aspect of the present invention, the rope is wound up by the winding drum and then unwound, whereby the elevating body is raised and lowered with respect to the main body 5.

Further, since the winding drum 22 does not protrude above the main body 5, the winding is required when the main body 5 is moved up and down by a link or when the main body 5 travels along the rail of a tower crane or a portal crane. The drum 22 does not get in the way.

Further, the winding drum 2 is provided at the lower part of the main body 5.
2, the winding drum 22 can be mounted by effectively utilizing the space between the main body 5 and the elevating body.

Further, one winding drum 22 is attached to the main body 5.
And a plurality of ropes, and the winding drum 22
The ropes are wound around each other at intervals in the axial direction, so that each rope can be smoothly wound up and unwound without getting entangled.

In addition, since only one winding drum 22 needs to be driven, its driving mechanism and control are simplified.

[0015]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS As shown in FIG. 1, a vehicle body 2 is pivotally mounted on a traveling body 1 to form a revolving traveling vehicle 3. A body 5 is horizontally mounted on the vehicle body 2 via a link mechanism 4. Installed to move.

The link mechanism 4 attaches the base ends of the first and second links 7 and 8 to a bracket 6 provided on the vehicle body 2 so as to swing up and down, and the distal ends of the first and second links 7 and 8. , A lever 9 is connected to form a four-bar link, and the base ends of the third and fourth links 10 and 11 are connected to the lever 9 so as to be vertically swingable.
The distal ends of the third and fourth links 10 and 11 are connected to the main body 5 to form a four-bar link. The lever 12 is connected near the base end of the first link 7, and the lever 13 is connected to the base 13 near the base end of the third link 10.
The second connecting portion 14 is slidable along the guide groove 15 of the bracket 6, and a cylinder 16 is connected to the bracket 6 and the connecting portion 14.

When the connecting portion 15 is brought to the position shown in FIG. 1 by extending the cylinder 16, the link 4 moves forward in parallel. From this state, the cylinder 16 is contracted and operated to move the connecting portion 15 along the guide groove 15. If it moves to the right of FIG. 1, the link 4 will move parallel to the vehicle body 2 side.

The main body 5 includes a frame 17 and a rising plate 18.
And the third and fourth links 10, 1
The front end portion 1 is vertically swingably connected. The frame 17 includes an upper horizontal member 19 and a ring-shaped vertical member 20, and a cylindrical body 21 is rotatably supported by the upper horizontal member 19 as shown in FIG. The take-up drum 22 is vertically suspended and connected to the cylindrical body 21, and the take-up drum 22 is supported by the main body 5 so as to be vertically rotatable and rotatable.

A pinion 25 rotated by a motor 24 meshes with a ring gear 23 fixed on the upper part of the cylindrical body 21.
When the pinion 25 is rotated by the motor 24, the winding drum 22 rotates.

The winding drum 22 has first, second, and
Third, fourth, fifth and sixth ropes 26, 27, 28, 2
9, 30, 31 are wound around at an interval in the axial direction,
Each rope is connected to an elevating body, for example, a work table 32, through a sheave provided on the frame. This worktable 32 is a floor 33
A handrail 34 is attached to the periphery of the handrail 34, a net 35 is stretched on the lower half of the handrail 34, and an upper surface plate 36 is attached to the upper part of the handrail 34.

Next, the details of the connection of the rope will be described. FIG.
As shown in FIG. 7, first to sixth upper sheaves 40, 41, 42, 43, 44, and 45 are mounted at the same height position near the outer periphery of the winding drum 22 near the upper portion of the frame 17. The first to sixth lower sheaves 46, 47, 48, 49, 5 are located below the sheave.
The winding drum 2 is shifted in the vertical direction.
2 are attached in the tangential direction. The first rope 26 is wound around the winding drum 22 via a first upper sheave 40 and a first lower sheave 46, and the first rope 26 is connected to a first support portion 52 of the upper plate 36.

The second rope 27 is wound around the winding drum 22 through a second upper sheave 41 and a second lower sheave 47, and the second rope 27 is connected to the second support portion 5 of the upper plate 36.
Connected to 3. The third rope 28 is the third upper sheave 4
Second and third ropes 28 are wound around the winding drum 22 via a lower sheave 48, and the third rope 28 is connected to a third support portion 54 of the upper plate 36.

The fourth rope 29 is wound around the take-up drum 22 through a fourth upper sheave 43 and a fourth lower sheave 49, and the fourth rope 29 is connected to the fourth support 5 of the upper plate 36.
Connected to 5. The fifth rope 30 is the fifth upper sheave 4
Fourth, the fifth rope 30 is wound around the winding drum 22 via the fifth lower sheave 50, and is connected to the fifth support portion 56 of the upper plate 36. The sixth rope 31 passes through the sixth upper sheave 45 and the sixth lower sheave 51, and the winding drum 2
The sixth rope 31 is connected to a sixth support portion 57 of the upper surface plate 36.

The first support portion 52 and the third support portion 54 approach each other to form a first support portion, and the second support portion 53 and the fifth support portion 56 approach each other to form a second support portion. Supporting part 55
And the sixth supporting portion 57 approach to form a third supporting portion. The first, second, and third support portions are located at 120-degree intervals on an imaginary circle centered on the center of the upper surface plate 36, and the first, second, and third support portions are equilateral triangles. Of the first to sixth upper sheaves 40, 41, 42, 43, 43 at the same height.
44 and 45 are parallel. The first support 52
And the third support 54, the second support 53 and the fifth support 56,
The fourth support part 55 and the sixth support part 57 may be one support part.

The first and sixth upper sheaves 40 and 45 and the sixth and first support portions 57 and 52 face each other, and the first rope 26 and the sixth rope 31 are located on one side of an equilateral triangle. , X-shape. The second and fourth upper sheaves 41,
The second rope 27 and the fourth rope 29 are located on the other side of the equilateral triangle and have an X-shape, with the 43 and the fourth / second support portions 55 and 53 facing each other. The third and fifth upper sheaves 42, 44 and the fifth and third support portions 54, 56 are opposed to each other, and the third rope 28 and the fifth rope 30 are located on the other side of the equilateral triangle. It is X-shaped.

Because of this, the winding drum 22
Is rotated in one direction to wind up each rope, and since the winding length of each rope is the same, the workbench 32 rises while keeping the level, and the winding drum 22 is rotated in the other direction to rotate each rope. Is extended, the workbench 32 descends while keeping the horizontal level because the extension heights of the ropes are the same.

Also, the first rope 26 and the sixth rope 31,
The second rope 27 and the fourth rope 29, the third rope 28 and the fifth rope 30 are X-shaped, and the work table 32 of each rope is provided.
Since the connecting portions are located substantially at the tops of the equilateral triangles at a plane distance of approximately 120 degrees, the lateral load in the front-rear direction and the left-right direction is supported by the rope, so that the work table 32 can be prevented from swaying.

As described above, since the work table 32 can be vertically moved up and down, the work table 32 can be lifted in the hole excavated in the ground, and the inner wall processing work of the hole can be efficiently performed.

Next, another embodiment of the rope wrapping will be described. As shown in FIG. 4, the first rope 26 and the second rope 27 are continuously wound around the winding drum 22 with the first lower sheave 46 and the second lower sheave 47 at the same height. The third rope 28 and the fourth rope 29 are continuously wound around the winding drum 22 with the third lower sheave 48 and the fourth lower sheave 49 at the same height. The fifth rope 30 and the sixth rope 31 are continuously wound around the winding drum 22 with the fifth lower sheave 50 and the sixth lower sheave 51 at the same height.

Next, another second embodiment in which each rope is wound will be described. As shown in FIG.
2, the first, second, third, fourth, fifth, and sixth sheaves 58-1, 58-2, 58-3, 58-4, 58-
5, 58-6 are sequentially mounted at intervals in the vertical direction toward the connection direction of the winding drum 22.
The first to sixth ropes 26 to 31 are wound around the sheaves 58-1 to 58-6, respectively, and are sequentially wound at intervals in the up-down direction of the winding drum 22.

The first rope 26 and the second rope 27
The second connecting portions 52 and 53 approach to each other to form a first supporting portion,
Third and fourth connecting portions 5 of third rope 28 and fourth rope 29
4, 55 approach and become the second support part, and the fifth rope 3
The fifth and sixth connecting portions 56 and 57 of the 0 and sixth ropes 31 approach to each other to form a third supporting portion.

Above the first connecting portion 52, the second sheave 58-
2 and the first sheave 58-
1 is located, the first rope 26 and the second rope 27 are X-shaped. The fourth sheave 58 is provided above the third connecting portion 54.
-4, the third sheave 58-3 is located above the fourth connecting portion 55, and the third rope 28 and the fourth rope 29 are X-shaped. A sixth sheave 58-6 above the fifth connecting portion 56,
The fifth sheave 58-5 is located above the sixth connecting portion 57, and the fifth rope 30 and the sixth rope 31 are X-shaped.

Next, another third embodiment of the present invention in which a rope is wound will be described. As shown in FIG. 6, the first rope 26 and the second rope 27 are located on one side of the triangle such that the first connection 52 and the second connection 53 face each other on one side of the triangle, and the downward V It is shaped like a letter. Third connecting portion 54 and fourth
The third rope 28 and the fourth rope 29 are located on the other side of the triangle with the connecting portion 55 facing the other side of the triangle, and have a downward V-shape. The fifth rope 30 and the sixth rope 31 are located on the remaining one side of the triangle with the fifth connecting part 56 and the sixth connecting part 57 facing each other on the other side of the triangle, and have a downward V-shape. I do.

The winding drum 22 may be horizontal (horizontal), or a plurality of winding drums may be provided vertically (vertically) or horizontally (horizontally), and some of the six ropes may be wound. It may be wrapped around a take drum.

As shown in FIG. 7, the main body 5 may be suspended on a traveling body 61 which can travel along a rail 60 of a tower crane, or as shown in FIG. 8, along a rail 62 of a portal crane. It may be suspended on a traveling body 63 that can travel freely.

[Brief description of the drawings]

FIG. 1 is an overall side view showing a first embodiment of the present invention.

FIG. 2 is an enlarged sectional view of a main body.

FIG. 3 is a perspective view showing a winding state of each rope.

FIG. 4 is a perspective view showing another first embodiment of winding each rope.

FIG. 5 is a perspective view showing another second embodiment in which each rope is wound.

FIG. 6 is a perspective view showing another third embodiment in which each rope is wound.

FIG. 7 is a front view showing an example used for a tower crane.

FIG. 8 is a front view showing an example used for a portal crane.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 2 ... Body 4 ... Link 5 ... Body 17 ... Frame 18 ... Rise part 19 ... Upper horizontal member 20 ... Vertical member 21 ... Cylindrical body 22 ... Winding drum 23 ... Ring gear 24 ... Motor 25 ... Pinion 26 ... 1st rope 27 ... 2nd rope 28 ... 3rd rope 29 ... 4th rope 30 ... 5th rope 31 ... 6th rope 32 ... workbench 34 ... handrail 40 ... 1st upper sheave 41 ... 2nd upper sheave 42 ... 3rd upper sheave 43 ... Fourth upper sheave 44 ... Fifth upper sheave 45 ... Sixth upper sheave 46 ... First lower sheave 47 ... Second lower sheave 48 ... Third lower sheave 49 ... Fourth lower sheave 50 ... Fifth lower sheave 51 ... Sixth Lower sheave 52 ... first support part 53 ... second support part 54 ... third support part 55 ... fourth support part 56 ... fifth support part 57 ... sixth support part 58-1 ... first sheave 58-2 ... first Sheave 58-3 ... third sheave 58-4 ... fourth sheave 58-5 ... fifth sheave 58-6 ... sixth sheave 60 ... rails 62 ... rail

Claims (2)

[Claims] A winding drum (2) is provided at a lower portion of a main body (5).
2) A lifting / lowering device for a lifting / lowering body in which a plurality of ropes wound around the take-up drum (22) are hung down and connected to the lifting / lowering body so as not to protrude above the main body (5). 2. A winding drum (22) is vertically attached to a lower portion of the main body (5) so as not to protrude upward from the main body (5), and is spaced apart in an axial direction of the winding drum (22). Characterized in that a plurality of ropes are wrapped around the rope, each of the ropes is hung down through a sheave attached to the main body (5), and each of the ropes is connected to a plurality of positions of the elevating body. .