JPH1160194A - High lift working bench - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide safe and efficient work without fear of an electric shock, by providing an electric insulation member which can cover from lower surface of a base body and foothold to the front side of a seat. SOLUTION: An electric insulation member 17 is stuck to lower surface and both side surfaces of a panel 18, and an apron part 17a which is hung from member's front edge covers the front side of a seat 4. Hook members 19, 20 are placed on the inner surface of the apron part 17a of the electric insulation member 17, and can be fixed to a handle 6d on the top part of a front frame 10a of a safety frame 10 and vertical frame 6a of a front leg body 6. After height position of the safety frame 10 is fixed, and a worker hangs the apron part 17a of the electric insulation member 17 on the front side of the seat 4 and fixes the hook member 19 to the safety frame 10, and the hook member 20 to the handle 6d, the apron part covers from the lower surface of a base body 1 and scaffold 3 to the front side of the seat 4. Thus, high lift work can be performed without fear of an electric shock.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an aerial work platform capable of efficiently and safely performing tall planting work and electric work around electric wires and electric poles.

[0002]

2. Description of the Related Art In recent years, for tall planting work and electric work around electric wires and utility poles, a method has been adopted in which a box is hung at the tip of a crane boom, and an operator rides in the box and works. However, due to the large volume of the box, it was difficult to enter a place close to a work place, such as between branches.

Therefore, the inventor of the present application has provided a scaffold on both lower sides of the base previously mounted on the tip of the crane boom and a seat on the upper surface of the base, and the seat can be adjusted to be horizontal according to the elevation angle of the crane boom. A high-altitude work platform is proposed.

[0004] Since this work platform at a high place can sufficiently support the body by the stepping of the foot on a scaffold and the knee grip in a state of sitting on a seat, it is possible to apply "power" in various operations. There is an advantage that a work place such as between branches can be sufficiently approached.

[0005]

However, in order to reduce the weight, most of the aerial work platforms proposed by the inventor of the present invention are made of aluminum material. When performing the work of extending the planting trees or performing the electric work around the electric wires and utility poles, there is a problem that it is necessary to sufficiently take measures to prevent electric shock of the worker because the work place can be sufficiently approached.

SUMMARY OF THE INVENTION In view of the foregoing, it is an object of the present invention to provide an aerial work platform capable of performing an efficient operation with a sense of security without fear of electric shock or the like.

[0007]

In order to achieve the above-mentioned object, an aerial work platform according to the present invention is provided with a scaffold at a lower portion on both sides of a base mounted on the tip of a crane boom, and a seat on a top surface of the base. In an aerial work platform where the seat is adjustable in accordance with the elevation angle of the crane boom, an electrically insulating member that can cover the front surface of the seat from the lower surface of the base and the scaffold is provided, and the branch is moved to a position near the electric wire. It is constructed so that the care of stretched tall planting trees and the prevention of electric shock for workers working around electric wires and utility poles can be ensured.

According to a second aspect of the present invention, a scaffold is provided at a lower portion on both sides of a base mounted on a tip of a crane boom, and a seat is provided on an upper surface of the base, and the seat can be adjusted according to the elevation angle of the crane boom. In a working platform at a high altitude, a storage box which is swingably supported so as to be always horizontal according to the elevation angle of the crane boom is provided on the base body behind the seat. It is designed so that tools and accessories necessary for electrical work can be stored in an easy-to-handle state.

According to a third aspect of the present invention, a scaffold is provided at a lower portion on both sides of a base mounted on a tip of a crane boom, and a seat is provided on an upper surface of the base, and the seat can be adjusted according to the elevation angle of the crane boom. In the high work platform, a safety frame is flipped up at the upper end of the backrest member of the seat, is provided so as to be slidable in the front-rear direction, and a stopper that defines a slide end on a slide rod of the safety frame. It is characterized in that when the safety frame is flipped up and slid backward (settling), excessive sinking can be effectively prevented.

[0010]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described below in detail with reference to the drawings. FIG. 1 is a perspective view showing the overall configuration of the workbench of the present invention, FIG. 2 is a side view showing the safety frame when the safety frame is flipped up, and FIG.
Is a perspective view showing locking means of the safety frame, FIG.
(B) is an explanatory view showing a state in which the angles of the seat and the storage box are adjusted according to the elevation angle of the crane boom, and FIG. 5 shows the height of the present application when the front surface of the seat is covered with an electrically insulating member from the lower surface of the scaffold. It is a perspective view of a work place.

In FIG. 1, reference numeral 1 denotes a base mounted on the tip of a crane boom k via a mounting member 2. A scaffold 3 is provided on both sides of the base 1, and a seat 4 is provided on an upper part.

The scaffold 3 is formed by arranging pipes 3a in a ladder shape at intervals such that the toes do not fall off. The pipe 3a
Among them, using the large diameter pipe 3a 'at the front end and the triangular member 3a "at the rear end, so that the front and rear ends can be confirmed with the feeling of the sole without looking through the foot. Make up.

The seat 4 is pivotally connected via a pin 4b to a mounting member 5a provided at the upper end of a rear leg 5 having a rear projection 4a on the lower surface of the rear portion of the base 1, which is erected on the rear upper surface of the base 1 with a slight forward inclination. Any one of the multi-staged horizontal rods 6b of the front leg 6 is attached via a hook member 4c extending therefrom.
It is supported by locking it to one.

The horizontal rod 6b is extended between the vertical frames 6a in a multi-stage ladder shape. The lower end of the vertical frame 6a is pivotally supported at the front of the base 1 so as to be swingable in the front-rear direction via a pin 6c.

As described above, the front leg 6 is pivotally supported by the rear leg 5.
The seat 4 is supported so as to be exchangeable with the other. The hook member 4c, which is locked to the lateral rod 6b of the front leg body 6 according to the elevation angle of the crane boom k, is exchanged with another lateral rod 6b so that the angle of the seat surface can be changed. Can always be adjusted to remain horizontal or nearly horizontal.

An inwardly curled handle 6d is provided at the upper end of the vertical frame 6a of the front leg 6, and the handle 6d is attached to the seat 4 when the crane boom k is extended or the elevation angle is changed. It is intended for a worker who is sitting to hold the body to stabilize the body, and at the same time, when working in a standing position, the handle 6 is held by the knee of the foot on the scaffold 3.
The body is supported by stretching d in the lateral direction.

Behind the seat 4, there is provided a storage box 9 swingably supported by an arm member 8 supported by a cylinder 7 obliquely provided on the base 1. This storage box 9 is used for tools (scissors, saws, pliers, etc.) and accessories (strings, insulating tapes, etc.) necessary for work such as planting and electrical work.
It is for storing other things, and it is always horizontal according to the elevation angle of the crane boom k, so that the stored items are not dropped and the operator can easily take out tools and the like. doing.

At the upper end of the backrest member 4d of the seat 4, a safety frame 10 is provided in a flip-up manner. The safety frame 10
Is composed of an arc-shaped front frame 10a, two parallel side frames 10b continuous with the front frame 10a, and a crossover frame 10c provided between the rear ends of the two side frames 10b. 1
Numeral 0 is slidably supported by a tube 11b fixed to both ends of a shaft 11a inserted into a horizontal pipe 11 fixed to the upper end of a backrest member 4d of the seat 4 via both side frames 10b.

Accordingly, the safety frame 10 allows the worker to use the seat 4.
Before seating, the user jumps up almost vertically as shown by the solid line in FIG. 2 and slides it down by its own weight. (In the direction of arrow A)
By lowering the operator forward (in the direction of arrow B), the operator can be bent in a loop.

When the safety frame 10 is flipped up and slid downward by its own weight, the arc portion of the arc-shaped front frame 10a may bite into the end of the tube material 11b. A stopper 12 is provided at an appropriate position of the side frame 11b (in front of the arc portion near the front frame) as shown in FIG.

A downwardly facing concave piece 13 is fixed to the lower surface of the central portion of the front frame 10a of the safety frame 10;
3 is a bridge 15 which is extendably inserted into a sheath pipe 14 fixed along the vertical frame 6a of the front leg 6 as shown in FIG.
As shown in FIG. 3, the upper edge can be locked.

The bridge 15 can be fixed at a desired extended position by a tightening screw 14a screwed into the mouth of the sheath pipe 14. This means that the locking height of the safety frame 10 is changed according to the elevation angle of the crane boom k in FIG.
This is in order to freely change and adjust as shown in (a) and (b).

The recess 13 fixed to the lower surface of the front frame 10a of the safety frame 10 is provided with a locking means 16 for locking a state of being locked to the upper edge of the bridge 15. The structure of the locking means 16 is not specifically limited.

In the case shown in the figure as the lock means 16,
The recessed piece 13 is provided with a stupid hole 16a at a substantially central portion of a front plate, a substantially L-shaped hole 16b is provided at a substantially central portion of a rear plate, and one end of a lock pin 16c is inserted through the coil spring 16d at the stuck hole 16a. It is locked in a universal shape.

The lock pin 16c is formed by turning the lower surface of the upper edge of the bridge 15 in the direction of arrow D while holding the other end of the finger with fingers and pulling in the direction of arrow C against the coil spring 16d. It is configured such that it can be locked by engaging it with an inverted L-shaped hole 16b provided substantially at the center of the rear plate as shown by a two-dot chain line in FIG.

The front surface of the seat from the lower surface of the base 1 and the scaffold 3 provided on both sides thereof can be covered with an electrically insulating member 17. The electrically insulating member 17 can be satisfied by using, for example, a rubber sheet or an insulating plastic sheet.

The electrical insulating member 17 may be attached by any method. However, in the present application, the concave panel 18 is provided so as to cover the base 1 and the lower surface of the scaffold 3 provided on both sides thereof. It is preferable to use The panel 18 is for preventing tools from dropping to the ground.

The electrical insulating member 17 is provided on the panel 18.
The front surface of the seat 4 is covered with an apron 17a provided so as to hang down from the front edge as shown in FIG. 1 as shown in FIG.

The apron 17 of the electrically insulating member 17
Hook members 19 and 20 are provided at appropriate places on the inner surface of a (the front surface in FIG. 1). The hook members 19 and 20 can be engaged with a handle 6d provided at the upper end of the front frame 10a of the safety frame 10 and the vertical frame 6a of the front leg 6 (see FIG. 5).

The hook members 19 and 20 provided on the apron portion 17a may be replaced with a string (not shown), or a velvet type fastener (not shown) may be used. Of course, it may be used. In addition,
In the figure, reference numeral 21 denotes a waist support rod of an operator sitting on the seat 4, and reference numeral 22 denotes a loading hook suspended from the tip of the crane boom k.

Next, the specific operation of the high work platform according to the present embodiment will be described. First, the base 1 is fixed to the tip of the crane boom k via the mounting member 2. This substrate 1
Are provided with scaffolds 3 on both sides and seats 4 on the upper surface.
The crane boom k is lowered, the operator jumps up the safety frame 10 and gets in, and sits down on the seat 4 and lowers the safety frame 10 forward to lock it in a predetermined manner.

Next, the crane boom k is extended toward the work destination and the angle is set. This control may be performed by an assistant on the ground or by remote control.

Thereafter, the worker sitting on the seat 4 engages with the horizontal rod 6b passing the front hook member 4c of the seat 4 to the vertical frame 6a of the front leg frame 6 in accordance with the change in the angle of the crane boom k. Change the stop position and make adjustments to ensure a posture that facilitates work. At the same time, the safety frame 10 is adjusted by changing the height of the bridge 15 with the screw 14a in accordance with the change in the angle of the crane boom k.

After the height of the safety frame 10 is fixed, the worker places the apron 17a of the electric insulating member 17 on the front surface of the seat 4, and attaches the hook member 19 to the safety frame 10.
By hooking the hook member 20 to the handle 6d, the lower surface of the base 1 and the scaffold 3 covers the front surface of the seat 4 as shown in FIG.

After the above preparation, the worker starts a predetermined work. In this work, when the worker straddles the seat 4, the work place at a high place is placed on the seat 4 with the knee. It can be gripped, and when standing, the handle 6d can be stretched with your knees, so you can work while your body is firmly fixed to the worktable, and therefore, you can easily enter the body between branches. Highly efficient work can be performed at high altitudes.

The work platform at a high place of the present application comprises a base 1 and a scaffold 2
Since the front of the seat 4 is covered by the electrical insulation member 17 from the lower surface of the car, there is a concern about electric shock during the care of tall planting trees that extend to a position close to the electric wires or electrical work around the electric wires and poles. And work at heights with a sense of security.

[0037]

As described above, according to the present invention, a scaffold is provided at the lower part on both sides of the base mounted on the tip of the crane boom, and a seat is provided on the upper surface of the base, and the seat can be adjusted according to the elevation angle of the crane boom. A high work platform, wherein an electrically insulating member capable of covering the front surface of the seat from the lower surface of the base and the scaffold is provided, so that a tall tall branch extending to a position close to the electric wire is provided. The present invention has an excellent effect that it is possible to secure the prevention of electric shock of a worker who works on the planting of trees and works around electric wires and electric poles, and can perform the work efficiently and safely.

According to a second aspect of the present invention, a scaffold is provided at a lower portion on both sides of a base mounted on the tip of a crane boom, and a seat is provided on an upper surface of the base, and the seat can be adjusted according to the elevation angle of the crane boom. In the above-mentioned high work platform, a storage box that is swingably supported so as to be always horizontal according to the elevation angle of the crane boom is provided on the base body behind the seat. This has the effect that tools and small items necessary for care and electrical work can be stored in an easy-to-handle state.

Further, according to the present invention, a scaffold is provided at a lower portion on both sides of the base mounted on the tip of the crane boom, and a seat is provided on the upper surface of the base, and the seat can be adjusted according to the elevation angle of the crane boom. A high working platform, wherein a safety member is provided on a bearing member which is pivotally supported at the upper end of a backrest member of the seat, the safety frame having both side frames slidably supported. It is characterized by providing a stopper in the right place of the side frame, so that when the safety frame is flipped up, both side frames slide too much and the arc part that is continuous with the front frame bites into the bearing member. This has the effect that it can be prevented.

[Brief description of the drawings]

FIG. 1 is a perspective view showing the overall configuration of a workbench according to the present invention.

FIG. 2 is a side view showing a state in which the safety frame is flipped up.

FIG. 3 is a perspective view showing locking means of a safety frame of the work platform at a high place in the present application.

FIGS. 4A and 4B are explanatory diagrams showing a state in which the angles of a seat and a storage box are adjusted according to the elevation angle of a crane boom.

FIG. 5 is a perspective view of the aerial work platform of the present application when the front surface of the seat is covered with an electrically insulating member from the lower surface of the scaffold.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Base 2 Mounting member 3 Scaffold 3a Pipe 3a 'Large-diameter pipe 3a "Triangular cross section member 4 Seat 4a Protrusion 4b Pin 4c Hook member 4d Backing member 5 Rear leg 5a Mounting member 6 Front leg 6a Vertical frame 6b Horizontal Rod 6c Pin 6d Handle 7 Cylindrical body 8 Arm member 9 Storage box 10 Safety frame 10a Front frame 10b Both side frames 10c Crossover frame 11 Horizontal pipe 11a Shaft 11b Tube material 12 Stopper 13 Concave piece 14 Sheath pipe 14a Tightening screw 15 Bridge 16 Lock Means 16a Stupid hole 16b Reverse L-shaped hole 16c Lock pin 16d Coil spring 17 Electrical insulation member 17a Apron section 18 Panel for preventing tools from falling 19 Hook member 20 Hook member 21 Waist support rod 22 Cargo handling hook k Crane boom

Claims (3)

[Claims] An aerial work platform provided with scaffolds on both sides of a base mounted on the tip of a crane boom and a seat on an upper surface of the base, wherein the inclination angle of the seat can be adjusted according to the elevation angle of the crane boom. 3. An aerial work platform according to claim 1, further comprising an electrically insulating member capable of covering a front surface of the seat from a lower surface of the base and the scaffold. 2. An aerial work platform having scaffolds on both sides of a base mounted on the tip of a crane boom and a seat on the upper surface of the base, wherein the inclination angle of the seat can be adjusted according to the elevation angle of the crane boom. 3. The work platform according to claim 1, further comprising a storage box supported on the base body behind the seat so as to be swingable so as to be always horizontal according to the elevation angle of the crane boom. 3. An aerial work platform provided with scaffolds on both sides of a base mounted on the tip of the crane boom and a seat on the upper surface of the base, wherein the inclination angle of the seat can be adjusted according to the elevation angle of the crane boom. Wherein a safety frame is flipped up at an upper end of a backrest member of the seat, and is provided so as to be slidable in the front-rear direction, and a stopper is provided on a slide rod of the safety frame to define a slide end. High work platform.