JP2992504B2 - lift device - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a portable elevator used for installing various electric devices such as an air conditioner and for carrying in / out furniture, and in particular, a portable elevator having no self-standing mechanism. And a lifting device for performing the operation.

[0002]

2. Description of the Related Art For example, when installing an outdoor unit of an air conditioner,
There are many cases where the outdoor unit is pulled up on the roof or the eaves. In this case, in consideration of work safety and labor, it is desirable to use an elevator, and in particular, it is desirable to use an inexpensive and easily transportable elevator that does not use power.

FIGS. 6 and 7 show a conventional portable elevator which can be used for installing an air conditioner. The portable elevator shown here includes a fixed base 1, a support 2 displaced from the center on the fixed base 1, and an elevating base 3 attached to the support 2 so as to be able to move up and down. . The elevating base 3 is operated by a winch 4 attached to a lower portion of the column 2.

[0004] Such portable elevators are much cheaper and easier to use than self-propelled elevators such as crane trucks and forklifts. However, since it is self-supporting, the supporting structure including the fixed base needs to have sufficient rigidity. for that reason,
The weight is high and the cost is high as a portable type.

Further, since a large fixed base is required, the bulk is large, and furthermore, a large installation area is required.
Even when a wide fixed base is used, the stability when a heavy object is lifted is not sufficient.

On the other hand, in order to solve the above-mentioned problems in the self-standing elevator, Japanese Patent Laid-Open Publication No. Hei 8-333088 discloses a leaning type elevator which leans and supports a column using a vertical surface such as a wall surface. Presented by In this vertical lift, a winch is attached to the lower end of the column, and a rope that is pulled out of the winch and has a hook at the tip is hung downward via a pulley attached to the upper end of the column. Then, by operating the winch to take up and send out the rope, the hook moves up and down, and the object is lifted and suspended.

[0007] Since this leaning type elevator does not require a fixed base for making the columns self-standing, it is possible to significantly reduce the size and weight and reduce the cost while maintaining the same strength as the conventional self-standing type.

[0008] However, when this leaning type elevator was experimentally manufactured and provided for actual use, it was found that there were the following problems.

[0009] The production of the columns is costly. It is often used in combination with a ladder, and both are transported at the same time. Since the winch is fixed to the lower end of the column, it can only be operated on the ground. That is, the operation place is limited to the ground. On the other hand, in order to handle an object lifted at a high position, it is necessary to work on a separate ladder. Therefore, it is not possible for one operator to handle the suspended object while operating the winch, and the workability is not good in addition to the fact that the operation place is limited to the ground.

[0010] The present invention has been made in view of such circumstances, the cost problem and workability problems of the conventional leaning type elevator to be resolved, together, lifting that can solve the bulk problem during transportation It is intended to provide a device .

[0011]

[MEANS FOR SOLVING THE PROBLEMS] To achieve the above object
In addition, the lifting device according to claim 1 of the present invention includes a winch unit having a winch for winding and sending out a rope, a winch unit provided with fixing means for attaching the winch to a leaning ladder, and a winch of the winch unit.
Stand the pulley on the pulley that supports the rope that was pulled out.
Pulley unit with fixing means for attaching to a hanging ladder
The winch unit and the pulley
By mounting the unit on a leaning ladder, a leaning type lift is constructed , and the pulley unit is
The rope pulled out from the front side of the ladder to the back side
Has a pair of pulleys before and after
The fixing means for attaching to the ladder
It is supported at two points by a pair of horizontal rails adjacent to the child,
Features that a pair of pulleys are held above the upper horizontal rail
And

Further, a lifting device according to claim 2 of the present invention.
Is a specific structure of the winch unit.
The winch is located in front of the leaning ladder.
Hand-operated rope winder with an operating handle
Yes, pulley rotation to wind up the rope by operating the handle
The center of rotation is for attaching the winch to the leaning ladder.
The fixing means is oriented at right angles to the fixing means.
It is supported at two points by a pair of horizontal rails adjacent to the hanging ladder
You.

[0013]

[0014]

[0015]

It is preferable that the winch unit and the pulley unit can be easily attached to and detached from two adjacent cross rails of the ladder. Further, it is preferable that the length of the fixing means can be adjusted so that the ladder can be used even if the type of the ladder, particularly, the interval between the horizontal rails of the ladder is changed.

[0017]

Embodiments of the present invention will be described below with reference to the drawings. FIG. 1 is a perspective view of a leaning type elevator configured using an elevator according to an embodiment of the present invention,
2 is a side view of a winch unit used in the lifting device, FIG. 3 is a front view of the winch unit, FIG. 4 is a side view of a pulley unit used in the lifting device, and FIG. 5 is a front view of the pulley unit. FIG.

As shown in FIG. 1, the lifting device according to the present embodiment is combined with a telescopic leaning ladder 50 which is generally commercially available to constitute a leaning type lifting device.
The lean ladder 50 includes a lower ladder member 51 and a sliding upper ladder member 52 combined therewith. The upper ladder member 51 is pulled out upward from the lower ladder member 52, and is fixed at an arbitrary height by a hook.

The elevating device includes a winch unit 60 detachably attached to the lower ladder member 51 and a pulley unit 7 detachably attached to the upper ladder member 52.
It consists of 0.

As shown in FIGS. 2 and 3, the winch unit 60 includes a telescopic base 61 that expands and contracts in a vertical direction.
A winch 62 attached to the gantry 61. The telescopic frame 61 is a fixing means for attaching the winch 62 to the lower ladder member 51, and a pair of upper and lower horizontal rails 51 a, 5 adjacent to the ladder member 51.
Two points are supported by 1a.

That is, the gantry 61 includes a flat rectangular cylindrical upper frame 61a, a flat rectangular cylindrical lower frame 61b inserted into a lower portion of the upper frame 61a, and a lower portion of the upper frame 61a. And a support base 61c protrudingly mounted thereon. A winch 62 is mounted on the support base 61c.

A bracket 61d is attached to the lower surface of the lower frame 61b so as to be fitted to the lower horizontal rail 51a from above. The cross-sectional shape of the bracket 61d is
It is a roof type so as to be able to cope with a change in the sectional shape of 1a. On the other hand, on the upper surface of the upper frame 61a, a bracket 61f having a U-shaped cross section that is fitted from the front side to the upper horizontal rail 51a is attached. In order to fix the bracket 61f to the upper horizontal rail 51a, a rotating lever type clamp member 61g is attached to the upper surface thereof.

The clamp member 61g includes a horizontal portion, an operation portion protruding upward from the front end of the horizontal portion, and a locking portion protruding downward from the rear end of the horizontal portion. The horizontal portion is rotatably supported on the upper surface of the upper frame 61a by a bracket 61i, and the locking portion opens and closes by rotating the operation portion.

The lower frame 61b is provided with horizontal rails 51a, 51
In order to adjust the distance between the brackets 61d and 61f in accordance with the distance between the holes a, the screws 61h, 61h, and 61h are advanced downward from the upper frame 61a and combined with the elongated holes.
Is fixed at an arbitrary advance position.

The winch 62 includes a bracket 62a screwed to the upper surface of the support base 61c and a bracket 62a.
and a handle 62c for rotating the pulley 62b. The pulley 62b winds the rope 62d pulled upward along the ladder member 51 from the pulley 62b, with the center of rotation oriented in a direction perpendicular to the upper frame 61b. Rope 62d
The hook 62e is attached to the tip of the.

As shown in FIGS. 4 and 5, the pulley unit 70 has a telescopic frame 71 which expands and contracts in the vertical direction. The frame 71 includes a pair of front and rear pulleys 72,
72 is a fixing means for attaching the ladder member 72 to the upper ladder member 52.
a and 52a support two points.

That is, the frame 71 is provided with a pair of front and rear pulleys 7.
A base portion 71f rotatably supporting the bases 2 and 72, a rectangular cylindrical upper frame 71a extending downward from a central portion of the base portion 71f, and a rectangular cylindrical lower frame externally fitted to a lower portion of the upper frame 71a. 71b. On the lower surface of the base portion 71f, a bracket 71c is fixedly located on the back side of the upper frame 71a. Bracket 7
1c has a U-shaped cross section that fits into the upper horizontal rail 52a from above.

On the other hand, a bracket 71d having a U-shaped cross section is fitted to the lower surface of the lower frame 71b so as to be fitted to the lower horizontal rail 52a from above. When the upper and lower brackets 71c and 71d are fitted to the horizontal rails 52a and 52a from above, the frame 71 is attached to the horizontal rails 52a and 52a of the ladder member 52, and the pulleys 72 and 72 are moved from the upper horizontal rail 52a. Hold up. Horizontal beam 52a, 52
In order to adjust the distance between the brackets 71c and 71d in accordance with the distance between the upper frame 7a and the lower frame 71b.
It rises and falls relatively to 1a, and is fixed at an arbitrary relative height by a clamp screw 71e combined with a long hole.

In order to fix the bracket 71d to the lower horizontal rail 52a, a rotary lever type clamp member 71g is attached to the front surface thereof. The clamp member 71g includes a vertical portion, an operation portion protruding frontward from the upper end of the vertical portion, and a locking portion protruding rearward from the lower end of the vertical portion. The vertical portion is rotatably supported by the bracket 71h on the front surface of the lower frame 71b, and the locking portion opens and closes by rotating the operation portion.

Next, a method of using the elevating device according to the present embodiment will be described.

The ladder 50 is extended to an appropriate length. The winch unit 60 is attached to the lower ladder member 51, and the pulley unit 70 is attached to the upper ladder member 52.

In mounting the winch unit 60, the interval between the brackets 61f, 61d is adjusted according to the interval between a pair of upper and lower horizontal beams 51a, 51a adjacent to the ladder member 51. With the frame 61 inclined to the front side, the lower clamp member 61g is fitted to the lower horizontal rail 51a. The frame 61 is turned to the rear side around the lower horizontal rail 51a, and the upper bracket 61f is fitted to the upper ladder member 51a. By operating the clamp member 61g from the open state to the closed state, the upper bracket 61f is fixed to the upper ladder member 51a.

As described above, the winch unit 60 can be operated with one touch by operating the clamp member 61g.
Attached to.

In mounting the pulley unit 70,
A pair of horizontal rails 51a, 51a adjacent to the ladder member 51
The distance between the brackets 71c and 71d is adjusted in accordance with the distance between. The brackets 71c and 71d are connected to the horizontal rails 51a and 5
Hook on 1a at the same time. By operating the clamp member 71g from the open state to the closed state, the lower bracket 71d is fixed to the lower horizontal rail 52a.

As described above, the pulley unit 70 is also attached to the ladder member 52 with one touch by operating the clamp member 71g.

Winch unit 60 and pulley unit 7
0, the winch 62 of the lifting mechanism 60
The rope 62d is pulled out from the upper side, is hooked on the pulleys 72, 72 of the pulley unit 70, and hangs on the back side of the ladder 50.

The hook 62e attached to the tip of the rope 62d is hooked on the article, and the handle 62c of the winch body 62 is operated to wind the rope 62d around the pulley 62b, whereby the article is lifted.

As described above, the elevating device according to the present embodiment is mounted on the commercially available leaning ladder 50 to constitute a leaning type elevator. This solves the problems of cost and workability in the conventional leaning type elevator, and also solves the problem of bulkiness during transportation.

That is, since the commercially available leaning ladder 50 is used for the column, a low-cost leaning type elevator can be provided. It is not necessary to carry an elevator with a support, and the ladder 50
If the lifting device is carried, the elevator can be configured, so that bulkiness during transportation can be eliminated. Winch unit 6
Since the mounting position of the pulley unit 0 and the pulley unit 70 can be arbitrarily selected, the operation place of the winch 62 is not limited to the ground, and the winch 62 can be operated even when climbing on the ladder 50. In this connection, it is also possible that one operator handles the suspended object while operating the winch 62. Therefore, workability is also good.

In addition, since the frame lengths of the winch unit 60 and the pulley unit 70 can be adjusted according to the interval between the horizontal rails of the ladder 50, even if the type of the ladder 50 changes, it is possible to cope with the versatility. Excellent. Since the winch unit 60 and the pulley unit 70 are easily mounted, they can be removed during transportation, and the mounting work and the mounting position can be easily changed on site.

The pulley unit 70 includes a pair of front and rear pulleys 72,
72. The pair of front and rear pulleys 72, 72 hang the rope 62d drawn out on the front side of the leaning ladder 50 to the back side. For this reason, the winch 62 can be provided on the front side of the leaning ladder 50, and the operation is facilitated.

[0042] The leaning type lift using the lifting device according to the present embodiment does not require a strong support mechanism for self-supporting, and therefore is smaller and lighter than the self-supporting lifting device, and costs are reduced. Also cheap. Also, a large installation area is not required as in the case of a free-standing elevator.

[0043]

[0044]

[0045]

[0046]

[0047]

[0048]

[0049]

[0050]

[0051]

[0052]

[0053]

[0054]

[0055]

[0056]

[0057]

[0058]

[0059]

[0060]

[0061]

[0062]

[0063]

[0064]

[0065]

[0066]

[0067]

As described above, according to the present invention,
The lifting device is very economical because it uses a ladder leaning on the column. In addition, since the work can be performed with the support, the workability is excellent, and the work ladder does not need to be carried, and bulkiness during transportation can be avoided. In particular, billing
In the elevating device according to Item 1, the pulley unit is a leaning ladder.
Before and after hanging the rope pulled out on the front side of the child to the back side
It has a pair of pulleys, and a pair of pulleys
The fixing means for attaching to the child is located next to the leaning ladder
Are supported at two points by a pair of upper and lower horizontal rails.
Hold the car above the upper rung. Also, in claim 2
In such a lifting device, the pulley in the winch unit
The center of rotation is for mounting the winch on the leaning ladder
Are oriented at right angles to the fixing means.

[Brief description of the drawings]

FIG. 1 is a perspective view of a leaning type elevator using a lifting device according to an embodiment of the present invention.

FIG. 2 is a side view of a winch unit used in the lifting device.

FIG. 3 is a front view of the winch unit.

FIG. 4 is a side view of a pulley unit used in the lifting device.

FIG. 5 is a front view of the pulley unit.

FIG. 6 is a side view of a conventional elevator .

FIG. 7 is a front view of a conventional elevator .

[Description of Signs] 50 leaning ladder 60 winch unit 61 gantry 62 winch 70 pulley unit 71 frame 72 pulley

Continuation of front page (56) References JP-A-8-217385 (JP, A) JP-A-8-333088 (JP, A) JP-A-10-77198 (JP, A) JP-A-6-56091 (JP) , U) Actually open 48-112056 (JP, U) Actually open 1951-95538 (JP, U) Actually open 1975-159558 (JP, U) Actually open 1980-64890 (JP, U) Actually open U.S. Pat. No. 5,139,108 (US, A) U.S. Pat. No. 5,738,185 (US, A) UK Patent Application Publication 2312012 (GB, A) (58) Field (Int.Cl. ⁶ , DB name) B66D 1 / 04,1 / 28,1 / 30 B66D 3 / 00,3 / 04 B66C 23 / 18,23 / 20 B66F 11/00 E06C 7/12 WPI / L (QUESTEL)

Claims (2)

(57) [Claims] 1. A winch unit comprising: a winch for winding and unwinding a rope; and a winch unit provided with fixing means for attaching the winch to a leaning ladder.
Support the rope pulled out of the winch of the
For mounting the pulley on a ladder.
It has and a pulley unit having a fixing means co to constitute leaning type elevator by mounting the ladder leaning against the winch unit and the pulley unit
The pulley unit is pulled in front of the leaning ladder.
It has a pair of pulleys before and after hanging the rope out to the back side
And a pair of front and rear pulleys were mounted on the ladder
The fixing means is a pair of upper and lower sides adjacent to the ladder
Two points are supported by the crossbar, and a pair of front and rear pulleys are
An elevating device, which is held above . 2. The winch of the winch unit according to claim 1, wherein
Equipped with an operation handle provided on the front side of the ladder
Hand-operated rope winding machine.
The center of rotation of the pulley that winds the rope
The direction perpendicular to the fixing means for mounting on the ladder
And the securing means is located above and below the
Claims characterized by being supported at two points by a pair of cross rails
Item 1. The lifting device according to Item 1 .