JP2562068Y2 - Drive device for working equipment at height - Google Patents

Description

[Detailed description of the invention]

[0001]

BACKGROUND OF THE INVENTION The present invention is directed to a high-rise work which is mounted above a pole such as a telephone pole, and which allows a worker to board and move a certain area around the pole while working at heights. The present invention relates to a drive device of a work place device.

[0002]

2. Description of the Related Art When an electric pole is made of wood, overhead wire construction is performed by attaching a pole climber to a worker's foot, and sequentially driving the pole climber into the pole, in accordance with the procedure of climbing a tree. He climbed close to his arm and worked on high places.However, today, when telephone poles are changed to concrete or metal, use the pole climber used when climbing wooden poles Because of the demands for safety or quickness of work at heights, the vehicle was mounted on the vehicle for ups and downs, expansion and contraction, and turning freely for the current work at high places such as overhead line construction. At present, many high-altitude work vehicles are used, in which a bucket is attached to the end of the boom, and an operator can board the bucket to perform altitude work safely and quickly.

[0003]

[Problems to be Solved by the Invention] However, in the current overhead line construction work using aerial work vehicles, workers are required to work on predetermined aerial work by boarding a bucket mounted on the end of a boom mounted on the aerial work vehicle. Therefore, compared to working at heights using pole climbers etc., it can be said that remarkable progress has been made not only in safety but also in terms of work efficiency, but work using work platforms is high. The work vehicle must be parked on the same road for a long time until the work at height is completed.

[0004] For this reason, at a site with a large traffic volume such as an urban area, traffic congestion due to parking is caused. Therefore, overhead line construction or the like at such a site must be usually performed by selecting a time zone such as midnight when the traffic volume is small. If work is severely restricted in time, or if it is necessary to perform high-altitude work at such sites during the day, take due care to avoid traffic congestion. In an extreme case, there was a problem that the aerial work vehicle had to be temporarily moved from the site.

Therefore, as a device for solving such a problem, a so-called temporary placement type scaffolding device for work at a high place, which is constructed so as to be directly detachable from a telephone pole or the like, has been developed, but it has been developed in the past. The temporary scaffolding device has a structure in which a simple fall prevention fence is provided around the scaffold on which the worker will board, or a fixed part for mounting a column and a base end attached to the fixed part Development of a high-altitude working device equipped with a horizontal arm that can be extended and retracted back and forth, a vertical arm that can be vertically extended and retracted at the end of the horizontal arm, and a work table that is attached to the vertical arm. However, the former simple temporary placement type scaffolding device is not configured to be movable, and once mounted on a pillar, the position of the scaffold cannot be freely changed. , So work Efficiency was significantly worse.

Also, the latter high-altitude working device employs a structure in which the front and rear expansion and the vertical expansion and contraction can be performed by a driving device. Can be changed, so that the working range is widened and the working efficiency can be improved. However, the driving energy of the hydraulic motor or the like for the fixed part (grip means such as an electric pole) for mounting the pillar in the above-mentioned work apparatus at a height, or the hydraulic actuator or the like which is a driving device for extending and retracting the horizontal arm and the vertical arm. The driving energy is
Conventionally, it is mainly supplied from a hydraulic pump installed on the ground, so it is necessary to install oil supply hoses, etc., and as the mounting position of the work equipment at height increases, the oil supply hose also needs to be longer accordingly Inevitably, a powerful (large) hydraulic pump must be adopted, which leads to an increase in cost and an extremely high risk, and has various problems.

[0007]

SUMMARY OF THE INVENTION The present invention has been made in view of the above-mentioned problems, and has as its object to be mounted above a pole body such as a telephone pole and to allow an operator to board. The present invention provides a driving device for an aerial work apparatus for performing an aerial work while moving a certain area around a column body, and for this purpose, a gripping means for mounting the column and a base unit based on the gripping means. A telescopic horizontal boom with attached ends,
A telescopic vertical arm vertically attached to the tip of the horizontal boom, a gripping actuator for actuating the gripping means detachably connected to an external hydraulic power source, and a boom mounted inside the horizontal boom, It comprises a drive unit that supplies hydraulic oil to an actuator that expands and contracts the vertical arm, and a work table attached to the vertical arm.

[0008]

With the above-described configuration, the mounting of the aerial work apparatus to the column requires the use of a gripping actuator and an external hydraulic source, for example, an aerial work vehicle for transporting the aerial work apparatus to the mounting position of the column. Connect to the hydraulic outlet provided on the worktable, etc., supply hydraulic pressure from the external hydraulic source to operate the gripping actuator, fix the gripping means to the column, and mount the high-altitude working device, After the aerial work equipment is mounted on the column, the connection between the gripping actuator and the external hydraulic power source is released, and the hydraulic oil is applied to the actuator that expands and contracts the horizontal boom and vertical arm by the drive unit provided inside the horizontal boom. To operate each actuator.

[0009]

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is an exploded perspective view showing an embodiment of a driving device for an aerial work apparatus according to the present invention; FIG. In the figure, reference numeral 1 denotes an aerial work apparatus, which is a grip comprising a fixed claw 3a and a movable claw 3b for gripping a column (which will be described below as a utility pole in this embodiment). A means 3, a horizontal boom 6 having a base end attached to the gripping means 3 so as to be swingable in the horizontal direction in a horizontal plane, and being extendable and contractable, and provided inside the base end of the horizontal boom 6;
A swing drive device 4 including an electric motor and a gear for swinging the horizontal boom 6 left and right with respect to the gripping means 3, a hydraulic cylinder 5 built in the horizontal boom 6 and extending and contracting the horizontal boom 6, A pin 7a is provided on the top surface of the end of the horizontal boom 6.
As a result, the storage position above the horizontal boom 6 and parallel to the horizontal boom 6 and the working position perpendicular to the horizontal boom 6 at the tip of the horizontal boom 6 are rotatably pivoted about the pin 7a. A first vertical arm 8a held in a retracted position or a working position by a horizontal locking device 7b attached to the top surface of the boom 6 and a vertical locking device 7c attached to the bottom surface of the horizontal boom, and a front of the first vertical arm 8a; A second vertical arm 9a vertically slidably attached to the side surface and vertically slidable, and a second vertical arm 9a built in the first vertical arm 8a with respect to the first vertical arm 8a
Hydraulic cylinder 8 and second vertical arm 9
a hydraulic cylinder 9 which is built in and extends and retracts the second vertical arm 9a, and a worker foldably attached to the tip of an arm 11 which is attached to the upper end of the second vertical arm 9a so as to be pivotable left and right in a horizontal plane. And a rotation drive device 10 built in the arm 11 and configured with an electric motor and a gear for rotating the arm 11 with respect to the second vertical arm 9a.

A fixed claw 3 constituting the gripping means 3
a is directly fixed to the base end of the horizontal boom 6, and the movable claw 3b
Is pivotally attached to the fixed claw 3a by a pivot 3c inserted into one end of the fixed claw 3a so as to be openable and closable, and the movable claw 3b
The opening / closing operation is performed by screwing a screw shaft 3e attached to an output shaft of a hydraulic motor 3d (gripping actuator) pivotally supported on the side of the movable claw 3b so as to be pivotable.
c, screwed onto a nut 3f attached to a position outside of the screw c, and switching the rotation direction of the screw shaft 3e by operating the hydraulic motor 3d in the normal or reverse direction, and moving the nut 3f of the fixed claw 3a with respect to the screw shaft 3e. The opening and closing operation of the movable claw 3b is performed by changing.

The operation of the horizontal boom 6 and the hydraulic cylinders 5, 8, 9 incorporated in the first and second vertical arms 8a, 9a are provided inside the horizontal boom 6, and the electric motor M Hydraulic oil supplied from a drive unit 13 (see FIG. 4) constituted by a hydraulic unit 13a constituted by a pump P and a reservoir tank 13b is supplied to the bottom oil of each of the hydraulic cylinders 5, 8, 9 by switching control valves. It is configured to operate by being selectively supplied to the chamber or the rod-side oil chamber.

The power source of the electric motor M constituting the hydraulic unit 13a is located at a site where work is performed at a high place.
For example, it is used by branching out from an electric wire laid over the telephone pole 2. Further, the hydraulic motor 3d for moving the movable claw 3b of the gripping means 3 is provided with a hydraulic outlet provided on a workbench of an aerial work vehicle used when the aerial work device 1 is mounted on the utility pole 2. It is detachably connected via a seal coupling S, and is configured to operate by pressure oil (see FIG. 4) supplied from a hydraulic outlet.

Hereinafter, the operation of the driving device of the aerial work apparatus according to the present invention will be described based on the above configuration. That is, the mounting of the aerial work apparatus 1 to the utility pole 2 is performed using, for example, an aerial work vehicle or the like. In this case, the high-altitude working device 1 may be transported to a high place by directly mounting the high-altitude working device 1 on a bucket or by placing the bucket near the utility pole 2 in advance and then mounting the high-altitude working device 1 near the bucket. It is lifted and carried by the lifting device or the like. During this transportation, the horizontal boom 6, the first vertical arm 8a, and the second vertical arm 9a of the aerial work apparatus 1 are reduced, and the workbench 12 is transported in a compactly folded state in the vicinity of the mounting position of the utility pole 2. You.

When the aerial work device 1 is transported to the position where the utility pole 2 is mounted, the aerial work device 1 is transferred to a hydraulic outlet provided on a workbench of the aerial work vehicle that has carried the aerial work device 1. The self-sealing coupling S is connected, a predetermined pressure oil is supplied to the hydraulic motor 3d provided in the gripping means 3, and the hydraulic motor 3d is rotated forward (open), so that the electric pole 2 is moved between the movable claw 3b and the fixed claw 3a. Is inserted, the hydraulic motor 3d is rotated in the reverse direction (closed) to close the movable claw 3b, and the work of mounting the work apparatus 1 on the utility pole 2 is completed. At this point, the aerial work vehicle that has transported the aerial work apparatus 1 leaves the work site.

When the mounting of the work apparatus at height 1 to the utility pole 2 is completed, the electric motor constituting the drive unit 13 of the work apparatus at height 1 by connecting the branch line to the electric wire laid on the utility pole 2. Power is supplied to M and the like. By the supply of the power, the swing drive device 4 and the turning drive device 10 enter an operable state. When the electric motor M and the pump P constituting the hydraulic unit 13a are driven, the horizontal boom 6,
A predetermined hydraulic oil is supplied to hydraulic cylinders 5, 8, and 9 built in the first vertical arm 8a and the second vertical arm 9a.

Next, the first vertical arm 8a and the second vertical arm 9a provided at the distal end of the horizontal boom 6 are erected, and the pin 7a is inserted through a horizontal lock device 7b provided on the lower surface of the horizontal arm 6 at the lower end. The first vertical arm 8a and the second vertical arm 9a are held upright, and the second vertical arm 9a
The work table 12 equipped on the upper surface of the work table 12 through the arm 11 is expanded from the folded state, and a worker who works at a high place on the work table 12 is mounted.

A worker who carries out a predetermined high-place work while riding on the work table 12 of the high-place work apparatus 1 is, for example, the work table 12
The first vertical arm 8a, the second vertical arm 9a, the hydraulic cylinder 5 built in the horizontal boom 6, and the like by appropriately operating an operation lever or the like (not shown in the figure) provided near the horizontal boom.
By operating the hydraulic cylinders 8 and 9 built in the horizontal boom 6, the first vertical arm 8a, the second vertical arm 9a, and the like, the position of the work table 12 is moved to an arbitrary position and a predetermined height is set. Perform work at the site efficiently.

After the work is completed, the work of removing the high-altitude working device 1 from the telephone pole 2 is performed in the reverse order of the mounting work described above.

[0019]

As described in detail above, the present invention provides a gripping means for mounting a column, a telescopic horizontal boom having a base end attached to the gripping means, and a vertical boom which is perpendicular to the tip of the horizontal boom. An attached telescopic vertical arm, a gripping actuator for actuating the gripping means detachably connected to an external hydraulic source, and an actuator mounted inside the horizontal boom for extending and retracting the horizontal boom and the vertical arm Since it was composed of a drive unit for supplying hydraulic oil to the work table and a work table attached to the vertical arm,
The mounting of the aerial work apparatus to the column is performed by using an external hydraulic source provided near the gripping means, i.e., a hydraulic apparatus mounted on a work platform such as an aerial work vehicle that transports the aerial work apparatus to the mounting position of the column. A predetermined pressure oil is supplied from the source, the hydraulic unit for driving the gripping means is operated, the gripping means is fixed to the column, and the aerial work apparatus is mounted, and the aerial work apparatus is mounted on the column. After that, predetermined power is supplied to the drive unit mounted inside the horizontal boom from the power supply near the aerial work equipment, and the drive unit is driven to perform operations such as expansion and contraction of the horizontal boom and vertical arm. Therefore, a hydraulic pump or the like is installed on the ground like a conventional high-altitude working device, and an oil feed hose is connected from the hydraulic pump to a drive unit mounted on the high-altitude working device. Hydraulic fluid through There is no need to supply, thus aerial device very easy mounting operation, and become a safe, have equal various excellent effects that can be configured apparatus also compact.

[Brief description of the drawings]

FIG. 1 is a perspective view showing an example of a driving device for an aerial work device according to the present invention.

FIG. 2 is a side view of a driving device of the high-altitude working device;

FIG. 3 is a plan view of a driving device of the high-altitude working device;

FIG. 4 is a block diagram showing a driving device of the high-altitude working device;

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Height work apparatus 2 Power pole 3 Grasping means 3d Hydraulic motor 4 Oscillating drive apparatus 5 Hydraulic cylinder 6 Horizontal boom 8, 9 Hydraulic cylinder 8a First vertical arm 9a Second vertical arm 10 Rotation drive apparatus 11 Arm 12 Work table 13 Drive Unit 13a Hydraulic unit 13b Reservoir tank M Electric motor P Hydraulic pump S Self-sealing coupling

──────────────────────────────────────────────────の Continuation of the front page (51) Int.Cl. ⁶ Identification code Agency reference number FI Technical display location E04G 3/00 E04G 3/00 A H02G 1/02 303 H02G 1/02 303D 7/00 9190-5L 7/00 G (72) Inventor Norihisa Takahashi 1015-2 Yamashita, Ryoji, Oji, Ageo City, Saitama Prefecture Inside Aichi Corporation Ageo Factory (72) Inventor Ken Takeshi Tomi 1152, Ryoke, Ryoke, Ryoke, Ageo City, Saitama Prefecture No. 10 Aichi Corporation Ageo Factory (56) References JP-A-2-2,09898 (JP, A) JP-A-2-175596 (JP, A) Fully open Showa 61-122300 (JP, U) 2-136441 (JP, U) JP-A 61-200899 (JP, U) JP-A 2-149696 (JP, U)

Claims (1)

(57) [Scope of request for utility model registration] 1. A gripping means for mounting a column, a telescopic horizontal boom having a base end mounted on the gripping means, a telescopic vertical arm vertically mounted on a tip of the horizontal boom, and an external A gripping actuator for actuating the gripping means detachably connected to a hydraulic source, a drive unit provided inside the horizontal boom for supplying hydraulic oil to an actuator for extending and retracting the horizontal boom and the vertical arm, A driving device for an aerial work device, comprising a work table attached to a vertical arm.