JPH0731800U - Aerial work equipment - Google Patents

Abstract

(57) [Summary] [Purpose] To provide an aerial work device having a simple structure and suitable for cleaning a special building. [Structure] A swivel base 3 is horizontally rotatably mounted on a traveling carriage 1 and a guide rail 4 is provided on the swivel base 3 so as to be undulating and extendable. The guide rail 4 extends along the guide rail 4. Is provided with a slider 5 which can be raised and lowered freely. The slider 5 has parallel link mechanisms 61, 62.
And a bucket 7 in which the tip of the wire is fastened to the slider 5 is connected to the bucket 7, and the bucket 7 is horizontally held by the manual operation of the projection means. The slider 5 is configured so as to be freely projected.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention relates to an aerial work apparatus used when working at a high place, and more particularly to an aerial work apparatus suitable for cleaning a special building having a curved glass surface or a wall surface.

[0002]

[Prior art]

 Conventionally, as an aerial work device of this type, as shown in, for example, Japanese Utility Model Laid-Open No. 4-5499, a turntable is mounted on a freely movable chassis, and a retractable guide rail is freely undulated on the turntable. A slider is provided on the guide rail so as to be movable up and down along the guide rail, and a boom provided with a bucket at the tip of the slider is provided so as to be undulating and extendable.

[0003]

[Problems to be solved by the device]

 However, in the above conventional aerial work equipment, the hoisting motion and the telescopic motion of the boom provided with the bucket are performed by the hoisting cylinder connected between the slider and the boom and the telescopic cylinder built in the boom. The hydraulic piping that is installed to extend and retract each cylinder requires special piping because the guide rail expands and contracts and the slider moves up and down the guide rail. There was a problem that the structure of the hydraulic system became complicated.

[0004]

[Means for Solving the Problems]

 In the aerial work apparatus of the present invention, a swivel is horizontally rotatably mounted on a traveling carriage, and a guide rail is provided on the swivel so as to be undulating and extendable. A slider that can move up and down is provided along the slider, and a bucket is continuously provided to the slider through an overhanging means, and the bucket is stretched from the slider while being horizontally held by the manual operation of the overhanging means. It is designed to be flexible.

The projecting means is composed of a parallel link mechanism connected between the slider and the bucket, and a winch provided on the bucket side and having a wire end fixed to the slider.

In addition, the projecting means has one end pivotally supported by the slider and the other end pivotally supported by the bucket, and the link arm integrally with the slider coaxially with both pivot shafts of the link arm. The hoisting car provided, and the hoisting car integrally provided on the bucket, the hoisting mediator wound between the hoisting cars, and the bucket are provided, and the tip of the wire is fixed to the slider. It consists of a winch, and the ratio of the number of teeth of both winding wheels is 1: 1.

Further, the projecting means has a first link arm whose one end is pivotally supported by the slider, one end which is pivotally supported by the other end of the first link arm, and the other end which is pivotally supported by the bucket. A second link arm, a first winding wheel integrally provided on the slider coaxially with one end pivot shaft of the first link arm, and a second link coaxially with one end pivot shaft of the second link arm. A second winding wheel integrally provided on the arm, a first winding intermediate node wound between the first and second winding wheels, and coaxially with the other end pivot shaft of the first link arm. A third winding wheel integrally provided on the first link arm, a fourth winding wheel integrally provided on the bucket on the same axis as the other end pivot of the second link arm, and the third and third winding wheels. The second winding medium node wound between the fourth winding vehicle and the second link coaxially with the other end pivot shaft of the second link arm. It is composed of a worm gear integrally provided on the quad arm and a worm provided on the bucket side and engaged with the worm gear. The gear ratios of the first and second winding wheels, and the third and fourth winding wheels are provided. The ratio of the number of teeth of each is 1: 1.

Further, the overhanging means is a pantograph-like elastic member that is interposed between the slider and the bucket and configured to be expandable and contractable by hand.

[0009]

[Action]

 During high-altitude work, the slider is moved up and down along the guide rails, and the operator riding on the bucket manually operates the overhanging means to keep the bucket from the slider to a predetermined length and in a horizontal state. Overhang while holding it and place this bucket in the working position.

[0010]

【Example】

 An embodiment of the present invention will be described below with reference to the drawings.

FIG. 1 and FIG. 2 show a schematic overall configuration of an aerial work apparatus according to the present invention.

In FIGS. 1 and 2, reference numeral 1 denotes a traveling vehicle, and a proper number (four in the illustrated example) of traveling wheels 11 are provided at the bottom of the traveling vehicle 1. The traveling wheels 11 may be configured to be able to automatically travel by a traveling means such as an appropriate motor, or may be a manual type in which the traveling carriage 1 is moved by being pushed by an operator. In addition, an appropriate steering means may be provided to operate the traveling method.

Further, the traveling carriage 1 is provided with a securing device 2 for securing the movement of the traveling carriage 1. The lashing device 2 is composed of a jack device which is configured to be expandable and contractable by rotating an operating portion provided at the upper end. Therefore, by extending the jack device downward and lifting the traveling carriage 1 to such an extent that the traveling wheels 11 are slightly lifted by the jack device, the traveling carriage 1 is restrained in its movement.

A swivel base 3 is mounted on the traveling carriage 1 so as to be horizontally swivelable by a driving device such as a hydraulic pressure or an electric motor (not shown). A base end of a guide rail 4 is pivotally supported on the swivel 3.

The guide rail 4 has a plurality of telescopic rails 42, 43 assembled in a multi-stage manner in a rail main body 41, and the telescopic rails 42, 43 are configured to be telescopic by a telescopic means such as an unillustrated telescopic cylinder. ing. A gripping arm 44 for stably holding the extended guide rail 4 at the time of work is provided at the tip of the telescopic rail 43, which is the most distal end.

The rail body 41 has its base end pivotally supported by the swivel base 3 and is swung by the expansion and contraction operation of an undulating cylinder 45 provided continuously between the swivel base 3 and the rail main body 41. It is possible to move up and down with respect to the table 3.

On the guide rail 4 thus configured, a slider 5 is provided so as to be vertically movable along the guide rail 4.

The slider 5 is configured to be movable up and down along the guide rail 4 that expands and contracts by the ascending / descending means (not shown), and has a length corresponding to the expansion / contraction length of the expansion / contraction rails 42 and 43. You can move.

As shown in FIG. 3, a bucket 7 is connected to the slider 5 via parallel links 61 and 62. One end of each of the parallel links 61 and 62 is pivotally supported above and below a side portion of the slider 5, and the other end thereof is pivotally supported above and below a bracket link 71 fixedly provided on a side portion of the bucket 7. The parallel links 61, 62 and the bracket link 71 constitute a parallel link mechanism.

The bucket 7 is large enough for an operator to ride on, and a winch 72 is provided above the bracket link 71. The winch 72 is configured such that a wire 75 wound around the winch drum 73 can be wound or unwound by rotating a lever 74 connected to a winch drum 73.

The tip of the wire 75 is connected to the upper end of the slider 5. Therefore, by winding the wire 75 around the winch drum 73 or unwinding the wire 75 from the winch drum 73 by the turning operation of the lever 74, the parallel links 61 and 62 are vertically rotated according to the winding amount and the unwinding amount. As a result, the bucket 7 connected to the parallel links 61 and 62 moves away from or approaches the slider 5 in the front-rear direction (left-right direction in FIGS. 1 and 3) by an amount commensurate with the amount of rotation. That is, by feeding the wire 75 from the winch drum 73, the bucket 7 is extended and arranged in front of the slider 5 by the maximum length of the parallel links 61 and 62 with respect to the slider 5. Since the bucket 7 is connected to the slider 5 by the parallel link mechanism described above, the bucket 7 is always held horizontally regardless of the rotational movement of the parallel links 61 and 62.

The above-mentioned parallel link mechanism and winch 72 constitute an overhanging means that can be overhanged freely from the slider 5 while the bucket 7 is manually held horizontally.

Next, the operation of the high-altitude work apparatus thus configured will be described.

For example, as shown in FIG. 1, the glass surface A is cleaned in a special situation where the wall surface is a glass surface A having a special shape A and the mezzanine deck B1 is in the lobby B. In this case, first, an aerial work device is arranged at a desired position in the lobby B, the traveling carriage 1 is stably held by the lashing device 2, and then the guide rail 4 is undulated according to the shape of the glass surface A. While extending, the horizontal beam A1 arranged inside the glass surface A is gripped by the gripping arm 44 provided at the tip of the guide rail 4. As a result, the guide rail 4 is stably held, and it is possible to prevent the aerial work apparatus from falling.

Then, in this state, the slider 5 is moved upward along the guide rail 4 and stopped at an appropriate height position, and then the wire 75 is fed out from the winch drum 73 by the turning operation of the lever 74. To the work position close to the glass surface A and project forward to the slider 5. As a result, the operator on the bucket 7 cleans the glass surface A.

In this way, the glass surface A having a special shape is made uniform by the lifting operation of the slider 5 and the length of the extension of the bucket 7 associated with the wire 75 being unwound or wound up from the winch drum 73 by the turning operation of the lever 74. Clean the width to the top. The entire glass surface A is cleaned by sequentially performing such work while moving the traveling carriage 1.

FIG. 4 shows an embodiment of the overhanging means described in claim 3.

This overhanging means has one end pivotally supported by the slider 5 and the other end pivotally supported by the bucket 7 via a bracket 81, and one end of the link arm 8 coaxial with a pivot shaft. A gear (hoisting wheel) 82 integrally provided on the slider 5 above, and a gear (hoisting wheel) 83 integrally provided on the bucket 7 coaxially with the other end pivot of the link arm 8. A chain (winding medium node) 84 wound between the gears 82 and 83, and a winch 85 provided on the bracket 81.

The gear ratios of the gears 82 and 83 are set to 1: 1.

The winch 85 has the same structure as the winch 72 described above, and the tip of the wire 86 is connected to the upper end of the slider 5.

Therefore, by winding or unwinding the wire 86 by operating the winch 85, the link arm 8 is vertically rotated according to the winding amount and the unwinding amount, and the bucket 7 connected to the link arm 8 is rotated. Is separated from or close to the slider 5 by an amount corresponding to the amount of rotation. During this approaching / separating operation, the bucket 7 is integrated with the bucket 7 by changing the winding position of the chain 84 around the gear 82 integrally provided on the slider 5 as the link arm 8 rotates. The provided gear 83 is forcibly rotated by an amount commensurate with the rotation amount of the link arm 8, and by this action, the bucket 7 is always held horizontally regardless of the rotation operation of the link arm 8. Will be moved in.

FIG. 5 shows an embodiment of the overhanging means described in claim 4.

This extension means has a first link arm 91 whose one end is pivotally supported by the slider 5, one end which is pivotally supported by the other end of the first link arm 91, and the other end which is supported by the bucket 7. A second link arm 93 pivotally supported via a racket 92, and a first gear (first winding wheel) 94 integrally provided on the slider 5 coaxially with one end pivot shaft of the first link arm 91. And a second gear (second winding wheel, which is disposed behind the third gear 97, which will be described later), which is provided integrally with the second link arm 93 coaxially with the one end pivot shaft of the second link arm 93. 95, a first chain (first winding medium node) 96 wound between the first and second gears 94 and 95, and the other end of the first link arm 91 coaxial with the pivot shaft. The third gear (third wheel) 97 integrally provided on the first link arm 91 and the second line A fourth gear (fourth winding wheel) 98 integrally provided on the bucket 7 coaxially with the other end pivot of the arm arm 93, and a first gear wound between the third and fourth gears 97, 98. Two chains (second winding medium) 99, a worm gear 100 integrally provided on the second link arm 93 coaxially with the other end pivot of the second link arm 93, and a bracket 92. It comprises a worm 101 engaged with a worm gear 100.

The tooth ratio of the first and second gears 94 and 95 is set to 1: 1 and the tooth ratio of the third and fourth gears 97 and 98 is also set to 1: 1. ing.

The worm 101 is configured to be rotatable by the turning operation of the lever 102, and the rotation of the worm 101 forcibly rotates the worm gear 100 provided integrally with the second link arm 93.

The operation of the bulging means configured as described above is performed by the operator riding the bucket 7 rotating the lever 102 to rotate the worm 101 and forcibly rotating the worm gear 100. That is, by forcibly rotating the worm gear 100, the arm angle of the second link arm 93 provided integrally with the worm gear 100 with respect to the bucket 7 changes. Due to this change in angle, the winding position of the chain 99 around the fourth gear 98 provided integrally in the bucket 7 changes, and the other end of the chain 99 passes through the third gear 97 around which the third gear 97 is wound. A first chain 96 wound around a first gear 94 integrally provided on the slider 5 and a second gear 95 integrally provided at one end of the second link arm 93 by giving a turning force to the 1-link arm 91. Combined with the change in the winding position, the bucket 7 is projected horizontally from the slider 5 with the bucket 7 held horizontally.

FIG. 6 shows an embodiment of the overhanging means described in claim 5.

This overhanging means is such that a pantograph-shaped elastic member 110 is interposed between the slider 5 and the bucket 7. The elastic member 110 is formed by a plurality of members 111 that support a rod-shaped member in an X shape and whose angles can be changed relative to each other. Both ends of the member 111 located at both ends of 110 are supported by the slider 5 and the bucket 7.

One of the members 111 supported by the slider 5 is supported so as to be vertically movable along a guide 51 formed on the slider 5.

Further, one of the members 111 supported by the bucket 7 is movably supported vertically along a guide 76 formed on the bucket 7, and one of the members 111 is moved vertically by the moving means 120. Is configured to. The moving means 120 is composed of, for example, a screw screw 121 rotatably supported by the bucket 7 in the vertical direction and a screw member 122 provided on one of the members 111 and screwed into the screw screw 121. ing. A lever 123 is coupled to the screw screw 121, and by rotating the lever 123 to rotate the screw screw 121, one of the members 111 can be moved up and down via the screw member 122.

Therefore, the expansion / contraction member 110 can be expanded / contracted by rotating the lever 123, and this expansion / contraction operation allows the bucket 7 to be horizontally extended from the slider 5 while being held horizontally. it can.

[0042]

[Effect of device]

 As described above, according to the present invention, since the bucket can be manually overhanged while keeping it horizontal, hydraulic piping and actuators are not required, and the structure is simple and suitable for cleaning special buildings. A work device can be provided.

[Brief description of drawings]

FIG. 1 is a side view showing a schematic overall configuration of an aerial work apparatus according to the present invention.

FIG. 2 is a perspective view showing a schematic overall configuration of an aerial work apparatus according to the present invention.

FIG. 3 is a side view showing the configuration of the overhanging means.

FIG. 4 is a side view showing another embodiment of the overhanging means.

FIG. 5 is a side view showing another embodiment of the overhanging means.

FIG. 6 is a side view showing another embodiment of the overhanging means.

[Explanation of symbols]

 1 Traveling Car 3 Swiveling Base 4 Guide Rail 5 Slider 61, 62 Parallel Link 7 Bucket 72 Winch 75 Wire 8 Link Arm 82, 83 Gear (Wrapping Car) 84 Chain (Wrapping Media) 85 Winch 86 Wire 91 First Link Arm 93 Second link arm 94 First gear (first winding wheel) 95 Second gear (second winding wheel) 96 First chain (first winding intermediate node) 97 Third gear (third winding wheel) ) 98 4th gear (4th roll hook) 99 2nd chain (2nd roll intermediate node) 100 Worm gear 101 Worm 110 Stretchable member

Claims (5)

[Scope of utility model registration request] 1. A swivel is horizontally rotatably mounted on a traveling carriage, and a guide rail is provided on the swivel so as to be undulating and extendable, and the guide rail is vertically movable along the guide rail. A slider is provided, and a bucket is continuously provided to the slider via an overhanging means, and the bucket is configured to be freely extended from the slider while being horizontally held by a manual operation of the overhanging means. Work equipment for high places. 2. The extension means comprises a parallel link mechanism connected between the slider and the bucket, and a winch provided on the bucket side and having a wire end fixed to the slider. Aerial work equipment. 3. A link arm, one end of which is pivotally supported by the slider and the other end of which is pivotally supported by a bucket, and the overhanging means is integrally provided on the slider coaxially with both pivot shafts of the link arm. And a hoisting wheel integrally provided on the bucket, a hoisting intermediate node wound between the hoisting wheels, and a winch provided on the bucket and having a wire end fixed to a slider. An aerial work apparatus according to claim 1, further comprising: and a ratio of the number of teeth of both winding wheels is 1: 1. 4. A first link arm having one end pivotally supported by the slider, one end pivotally supported at the other end of the first link arm, and the other end pivotally supported by the bucket. A second link arm, and a first winding wheel provided integrally with the slider coaxially with one end pivot shaft of the first link arm,
A second winding wheel integrally provided on the second link arm coaxially with one end pivot shaft of the second link arm, and a first winding medium node wound between the first and second winding wheels. And a third winding wheel provided integrally with the first link arm coaxially with the other end pivot of the first link arm and a bucket coaxially provided with the other end pivot of the second link arm. And a second winding intermediate node wound between the third and fourth winding wheels, and a second pivot shaft coaxially with the other end pivot shaft of the second link arm.
It is composed of a worm gear integrally provided on the link arm and a worm provided on the bucket side and engaged with the worm gear. The gear ratio of the first and second winding wheels, and the third and fourth winding wheels are provided. The high-altitude work apparatus according to claim 1, wherein the tooth ratio of each is 1: 1. 5. The aerial work apparatus according to claim 1, wherein the projecting means is a pantograph-like elastic member which is interposed between the slider and the bucket and is configured to be manually expandable and contractible.