JPH01308397A - Lifting gear - Google Patents

Abstract

PURPOSE:To simplify a lifting gear in structure as well as to reduce both the equipment and maintenance costs by generating a thrust in a way of feeding or discharging a pressure fluid from the underside of a fluid tube being crushed by a roller, and installing a pallet being unified with a roller mounting frame lifted by this thrust. CONSTITUTION:Plural numbers of fluid tubes 1A', 1B' hangingly installed are crushed under pressure by thrust generating rollers 2A, 2B orthogonal with the longitudinal direction. A pressure fluid is fed out of the underside of these fluid tubes 1A', 1B' through a feed hose 6, giving the lifting pressure to rollers 2A, 2B, and a lifting thrust is generated hereat. With this thrust, these rollers 2A, 2B are rotated upward, and a machine frame 3 as one body with these rollers and a pallet 5 are lifted up. Next, when this pallet 5 is lowered, the fluid is exhausted via the fluid feed hose 6, and the pallet 5 is lowered as reducing each thrust of these thrust generating rollers 2A, 2B.

Description

[Detailed description of the invention] (a) Purpose of the invention (a) Regarding the field of industrial application This invention is useful for transporting work materials and other materials from the ground to elevated work sites, or for transporting incoming goods at construction sites, etc. This is a lifting device that can be used in simple elevators, etc.

(b) Conventional technology This type of lifting device has been used in various ways, including complex-structured devices such as building elevators, as well as simple elevators for transporting materials at building or construction sites. All of these systems are powered (electrically powered) for lifting and lowering transportation, and the loading platform and power support mechanism are complicated, and problems are likely to occur.

(C) Problems to be Solved by the Invention In view of the above-mentioned conventional techniques, the present invention simplifies the structure of the lifting device, reduces equipment costs and maintenance costs, and improves the usage method (
It is an object of the present invention to provide a lifting device that is easy to operate (operation) and is less prone to malfunctions.

(b) Regarding the structure of the invention The present invention was invented with the above-mentioned purpose, and the structure will now be described with reference to the drawings which are embodiments.

Each figure in Figure 1 shows the first embodiment with four fluid tubes.
Therefore, it is constructed with four pairs of rollers for crushing it. This will be described in detail below.

Figure 1 (A) is a side view, (B) is a cross-sectional explanatory view taken along line A-A' at the thrust generating roller (2A) (2B) section, and (C) is the guide roller (2C) (2D) section. (D) is a cross-sectional explanatory diagram taken along line BB' in FIG.
A) This is an explanatory cross-sectional view taken along line c-c' in section (4B), and there are thrust-generating rollers (2A) (2A') (2B) (
The thrust generating rollers (2A) (2A') are installed in the same direction, and the thrust generating rollers (2B) (2B')
(2A') is mounted on the upper part of the machine frame (3) (hereinafter referred to as the "machine frame") for roller mounting and loading platform, with the mounting direction opposite to that of the machine frame (3). At the lower position, two pairs of guide rollers (2C) (2C') and (2D) (20) are each integrally attached to the machine frame (3), and a guide roller (2C) (2G'
) are thrust generating rollers (2A) (2A'),
The guide rollers (2D) (2D') are configured to face the same direction as the thrust generating rollers (2B) (2B'), respectively. Also, thrust generating roller (2A) (2A')
Directly above the (2B) (2B") are these guide rollers (4A) (4A') and the guide rollers (4B) (2 of each 4B are arranged as a pair) on the machine frame (3
) to the thrust generating roller (2A) C2A') (2
B) (zB') are installed in the same direction and configured to be mounted on a shaft, and the thrust generating rollers (2A) (2A
”) and (2B) (2B' ) and guide roller (
4A) (4A'') and (4B) (4B') are fluid Chicove (LA) CIA' in the shaft mounting direction, respectively.
) and (IB) (IB' ) are orthogonally crushed, and the lower guide rollers (2C) (2C' ) and (2D) (2
D' ) is pivoted perpendicularly to each fluid tube (IA) CIA' ) and (IB) (IB' ), but without crushing it, the fluid tubes (LA) (IA'') (IB)
It is pivoted to the machine frame (3) so that it is in close contact with the fluid tube when pressure fluid is supplied to (IB'). A loading platform (5) is suspended integrally with the machine frame (3) at the bottom of the machine frame (3) to which the rollers are pivotally mounted on the upper, lower, left and right sides of the machine frame (3).

It goes without saying that the loading platform (5) may be constructed on the upper part of the machine frame (3) as shown by the dotted line, or the machine frame (3) itself may be constructed to also serve as a loading platform.

Furthermore, in the case of a lifting device for lightening loads, it is sufficient to use only thrust generating rollers, and the number of rollers installed, their orientation, and the number of fluid tubes installed are determined by the secondary
Of course, as shown in each figure, the mounting of the present device may be modified in various ways depending on the location and other conditions. In the figure, (6) is a fluid supply hose connected to each fluid tube, and (7) is a fluid adjustment device that operates to generate and adjust fluid pressure, adjust the amount of pressure fluid to be supplied, discharge, etc. be.

Note that the pressure fluid is delivered and discharged from below the fluid tube.

Next, in the device of the present invention for transporting and lowering a large load, as shown in FIG. )
One of the fluid tubes (10) is attached to the flat part (9) of the
) and a thrust generating roller (12) and a guide roller (13), which are integrally configured with a bearing plate (15) (15'), are crushed orthogonally to the flat part (9), and the bearing plate (15) (15') is equipped with a roller or rotating wheel (14) that rolls on the back surface of the flat part (9), and a bearing plate (
15) (15'), the thrust generating roller (12), the guide roller (13), and the rotary ring (14) are configured to be able to lift and lower the flat part (9) of the loading platform guide column (8), and other fluids Similar to the embodiment described above, the tube may be orthogonally crushed by a thrust generating roller or the like which is likely to be pivoted to the machine frame or the machine frame/loading platform, so that the pressure fluid can be supplied or discharged from below the fluid tube.

(c) Functions and effects of the invention Although the present invention has the above-described configuration, the functions and effects thereof will be described first.

First, to explain the embodiment shown in Figures 1 and 2, the fluid adjustment device (
7) through each fluid tube (IA) through the fluid supply hose (6) while adjusting the pressure and volume of fluid delivered by
CIA' ) (IB) (IB' ). When this happens, each fluid tube expands, pressure fluid rises, and the machine frame (
3) Guide rollers (2C) and (2C') provided at the bottom
are fluid tubes (IA) and CIA'), and guide rollers (2D) and (2D') are fluid tubes (IB).
and (IB') and securely clamps them.

Next, the pressure fluid is thrust generating rollers (2A) (2A') (
2B) (2B'), but the thrust generating rollers are configured as a pair of two, and each fluid tube (IA'
)(1,A)(IB')(IB), and since it is pinched and crushed, the pressure fluid does not rise from the position of each roller.

Therefore, the rising pressure of the pressure fluid increases with each thrust generating roller (2A
) (2A'> (2B) (2B' ) and upward thrust is generated here, each roller rotates upward, and the machine frame (3) and loading platform that are integrally constructed with each roller →
rises. At this time, the upper guide roller (4A)
″)(4B)(4B') is the fluid tube CIA')(
IA) (IB') (IB) in a crushed state (5)
The guide roller (2C) at the bottom guides the rise of etc.
(2C' ) (2D) (2D' ) are the enlarged fluid tubes (IA) CIA' ) (IB) (IB'
) are closely held together to help the loading platform (5) etc. rise smoothly.

Next, when lowering the loading platform (5), etc., the pressure of the fluid is reduced by the fluid adjustment device, and the fluid is discharged from each fluid tube via the fluid supply hose (6) to increase the thrust to each thrust generating roller. Descend while reducing.

Next, since the plurality of fluid tubes of the device of the present invention are simply suspended and are in a hanging state, there is a possibility that they will swing back and forth and left and right when the loading platform (5) goes up and down. must be kept to a minimum.

For this purpose, the present invention firstly includes a plurality of fluid tubes, and rollers are arranged vertically and horizontally, or vertically and horizontally, front and back, and secondly, these rollers are installed in different directions. Therefore, the greater the number of suspended fluid tubes and the number of rollers attached, the less the vibration will occur. Therefore, in the present invention, a plurality of fluid tubes are used, and the number can be freely selected depending on the installation of the lifting device and the purpose of use. Furthermore, since the thrust generating rollers or guide rollers that crush the fluid tubes are installed in different directions for each fluid tube, it is difficult for the swinging force directions of the fluid tubes to all be in the same direction. There is an advantage that the rocking of the loading platform (5) etc. is extremely small.

Next, the operation and effect of the device of the present invention shown in FIG. 3 which is a second embodiment will be explained. ), which is crushed by thrust generating rollers (12) and guide rollers (13), and then rotated further.
Since the rollers are configured to go around the back surface of the flat part (9) and rotate in contact with each other, even if other fluid tubes are simply suspended and hanging down, each roller that rolls while sandwiching these fluid tubes. Coupled with the effect of different mounting directions, the loading platform (1
1) Swinging is prevented. The lifting and lowering action of the loading platform (11) by operating the fluid regulating device (7') is the same as the lifting and lowering action of the first embodiment.

Next, as explained above, the device of the present invention has an extremely simple structure, so it is economical with low equipment costs, and can be easily installed at building or construction sites as a device that suits the site environment. (You can freely select and install the number of suspended fluid tubes, the number of installed rollers, and their positions depending on the size of the space and the size and weight of the materials to be transported.) It also has the advantage that the fluid can be water, air, oil, etc.

[Brief explanation of the drawing]

The drawings show embodiments of the present invention, and Figures 1-2 and 2 are the first embodiment. Figure 1 (A) is an explanatory side view. Figure 1 (B) is an explanatory cross-sectional view taken along line A-A' in Figure 1. Figure 1 (
C) is an explanatory cross-sectional view taken along line BB' in Figure 1. Figure 1 (D) is an explanatory cross-sectional view taken along line CC' in Figure 1. Figure 2 (A) to Figure 2 (
H) is each explanatory diagram showing the hanging position of the fluid tube and the orientation configuration of the roller. FIG. 3 is a schematic explanatory diagram showing a part of the second embodiment. (IA) CIA' ) (IB) (IB' )...
・・・・・・Fluid tube (3)・・・・・・・・・・・・
・・・・・・・・・・・・・・・・・・・・・Machine frame (4A
) (4A") (4B) (4B')...
・・・Guide roller (5)・・・・・・・・・・・・・・・
・・・・・・・・・・・・・・・・・・ Loading platform (6)...
・・・・・・・・・・・・・・・・・・・・・・・・
...Fluid supply hose (7) (7')...
・・・・・・・・・・・・・・・・・・Fluid adjustment device (8
)・・・・・・・・・・・・・・・・・・・・・
・・・・・・Tube guide column (9)・・・・・・・・・
・・・・・・・・・・・・Flat part (of tube guide column) (10)・・・・・・・・・・・・・・・・・・・・・
Fluid tube (11) (of the second embodiment)...
・・・・・・・・・・・・・・・(〃) Loading platform (12)...
・・・・・・・・・・・・・・・・・・(〃) Thrust generation roller

Claims (3)

[Claims] (1) Crush multiple suspended fluid tubes with a roller perpendicular to their longitudinal direction, supply or discharge pressure fluid from below the fluid tubes to generate roller thrust, and use the thrust to attach the rollers. An elevating device characterized by elevating and lowering a cargo platform formed integrally with a machine frame. (2) The elevating device according to claim (1), wherein the plurality of rollers are oriented in different directions so as to be orthogonal to the longitudinal direction of the fluid tube and to crush the fluid tube. (3) A tube guide column having a flat part is erected, and one of the plurality of suspended fluid tubes is attached to the flat part,
The fluid tube is crushed in a flat part by a roller perpendicular to the longitudinal direction of the tube, and a rotating ring that holds the flat part and rolls on the back surface of the flat part is pivotally attached to the bearing plate of the roller rotating shaft, Claim (1) above, characterized in that the bearing plate and the loading platform are integrally constructed.
(2) The lifting device as described.