JP2023179146A - Remote operation rod support tool - Google Patents

Abstract

To provide a remote operation rod support tool capable of stabilizing a fixed state relative to external force generated in a direction along a holding surface of a handrail of a bucket.SOLUTION: A remote operation rod support tool 1 is provided with an operation rod fixing unit 2 for fixing a remote operation rod and a body 10 to which the operation rod fixing unit 2 can be detachably attached. With the operation rod fixing unit 2, a toggle clamp 4 for holding the remote operation rod and a pillar 6 are connected by a ball joint 28. The ball joint 28 can be locked at an arbitrary bending angle by a ball joint locking unit 30. The body 10 has a base 12 for attaching/detaching the operation rod fixing unit 2, and a handrail mounting unit 20 for mounting onto a handrail of a bucket. A separation preventing unit 24 for preventing separation of the bucket from the handrail is provided on a lower side of the handrail mounting unit 20.SELECTED DRAWING: Figure 1

Description

TECHNICAL FIELD The present invention relates to a remote control rod support for supporting a remote control rod during indirect work on overhead lines using an aerial work vehicle.

Overhead line work such as the installation and repair of electric lines often involves working with live lines that are energized. For this reason, tools have been developed to safely perform indirect work.

For example, when cutting electric wires, a wire tensioning device with a metal wire gripper and a total weight of several kilograms is used. In such a case, a worker must remotely install a heavy wire tensioning device using a tip tool attached to a remote control rod and route the wires. When working on a bucket using an aerial work vehicle, it is common for two or more people to perform the work, and even if the work is divided, the burden on each person is heavy.

In order to reduce the burden on each worker and perform work safely, tools and devices that support remote control rods are being considered. FIG. 7 shows a conventional tool fixing device 100 for live line work. The fixing device 100 can be attached to the handrail of the bucket B, and can fix the remote control rod S. Since the clamp 101 is provided via a ball joint 102, the direction of the fixed remote control rod S can be freely changed. Note that such a device is disclosed in Patent Document 1.

Japanese Patent Application Publication No. 2000-324635

However, the fixing device 100 as shown in FIG. 7 is stable against external forces acting in an out-of-plane direction on the gripping surface (vertical plane) of the handrail of the bucket B, but when an external force is applied in an in-plane direction, There is a risk that the fixed position may shift due to rotation within the plane of the handrail.

SUMMARY OF THE INVENTION Therefore, an object of the present invention is to provide a remote control rod support whose fixed state is stable against external forces generated in a direction along the clamping surface of a handrail of a bucket.

In order to achieve the above object, the remote control rod support of the present invention is a remote control rod support that is attached to the handrail of the bucket of an aerial work vehicle and supports the remote control rod in an adjustable position. a gripping portion for fixing a remote control rod, an operation rod fixing portion having a support below which supports the gripping portion, a base for removably supporting the column side of the operation rod fixing portion, and a base for detachably supporting the pillar side of the operation rod fixing portion; a main body having a handrail mounting part attached to hang on the upper end of the handrail, and a main body so as to be able to protrude and retract toward the space below the outer edge of the upper end of the handrail, It is characterized by comprising a detachment prevention part that prevents detachment of the edge part accommodated in the handrail attachment part.

Further, in addition to the above-described configuration, the remote control rod support of the present invention is provided such that the operation rod fixing portion includes at least one flange portion extending in a flange shape in the radial direction from a part of the side surface of the support column. The base is provided with a fixed seat on which the flange part is placed and fixed, and a gap approximately equal to the thickness of the flange part above the fixed seat, and the flange part is mounted on a surface of the flange surface. It is characterized by comprising a flange cover having an opening through which it can pass outward.

Further, in addition to the above-mentioned configuration, the remote control rod support of the present invention is provided with an index plunger that can be fitted into a recess formed in the flange portion on the base at a position spaced apart from the opening. It is characterized by

Further, in addition to the above configuration, the remote control rod support of the present invention is configured such that the gripping portion includes a ball stud having a ball head at the tip and is configured to operate a lever in the direction in which the ball stud extends, and and a toggle clamp that applies a force for gripping the operating rod, and the support column is characterized in that it includes a socket that accommodates the ball head and has a notch partially formed into which the ball stud can be inserted. .

As described above, according to the remote control rod support of the present invention, the base and the control rod fixing part are configured to be detachable, so that they can be transported together in a compact manner in a separated state. In addition, the detachment prevention part is configured to be able to protrude and retract toward the space below the edge of the upper end of the bucket handrail that protrudes outward, so after it is attached to the bucket, the detachment prevention part can be protruded and the handrail attachment part can be attached. It becomes possible to stabilize the situation. As a result, even if a force is applied in the vertical plane of the handrail of the bucket during overhead line work, the detachment prevention part will catch on the edge, thereby preventing the bucket from falling off.

Further, according to the present invention, in addition to the above effects, in the base, a gap approximately equal to the thickness of the flange portion is formed between the fixed seat and the flange cover. The flange cover has an opening through which the flange portion can pass from an out-of-plane direction. This allows the flange to be accommodated in the base from the opening and then simply rotate the support to accommodate the flange in the gap between the fixing seat and the flange cover, and secure the operating rod from the base. This can prevent parts from falling off.

According to the present invention, in addition to the above-mentioned effects, the flange part accommodated in the base from the opening of the flange cover is separated from the opening by slipping into the gap between the flange cover and the fixed seat by rotation of the column. It can be fixed by simply fitting the index plunger into the recess. This reduces the time required to assemble the operating rod fixing part.

Further, according to the present invention, in addition to the above-mentioned effects, since a notch is formed on the socket side so that the ball stud supporting the grip part can be tilted by fitting, the ball stud can be accommodated in the notch. Clamp operation stabilizes the work. Furthermore, since the lever of the toggle clamp is configured to be operable in the direction in which the ball stud extends, it is possible to prevent the ball stud from swinging during either the clamping operation or the release operation.

FIG. 1 is an overall perspective view of the remote control rod support of the present invention. FIG. 2 is a perspective view of the operating rod fixing portion of the remote operating rod support of FIG. 1; FIG. 2 is a perspective view of the main body of the remote control rod support of FIG. 1; FIG. 4 is an exploded perspective view of the base of the main body in FIG. 3; The flange part of the operating rod fixing part of FIG. 2 is shown, (a) is a perspective view, and (b) is an enlarged view of the tip of the flange part. 2A and 2B are diagrams showing the operation of the detachment prevention part of the remote control rod support of FIG. 1, with (a) showing the released state and (b) showing the locked state. It is a figure which shows the fixing device of the conventional live line work tool.

DESCRIPTION OF THE PREFERRED EMBODIMENTS A remote control rod support according to an embodiment of the present invention will be described below with reference to the drawings. Note that the same structures will be described using the same reference numerals.

FIG. 1 is an overall perspective view of a remote control rod support 1 of the present invention. In FIG. 1, the inside of the bucket to be attached is shown as the rear, and the outside is shown as the front with arrows.

The remote control rod support 1 will be explained in order from the top.

A toggle clamp 4 serving as a gripping portion for gripping a remote control rod is arranged at the upper end. In FIG. 1, an auxiliary line L1 represents the direction in which pressure is applied due to clamping when gripping the remote control rod. As can be seen in FIG. 1, the toggle clamp 4 is configured to be able to grip the remote control rod by pressing it downward. The lever 4a that operates the toggle clamp 4 is provided so that it can apply force along the direction of the auxiliary line L1, and in addition, the tip also moves in the direction along the auxiliary line L1 in the clamped state. It is set to face.

A ball joint 28 consisting of a ball stud 28a and a socket 28b is provided below the toggle clamp 4. This ball stud 28a extends downward from the toggle clamp 4. A socket 28b that rotatably accommodates the ball head 28a1 at the tip of the ball stud 28a is provided above the support column 6 via the ball joint locking portion 30. By operating the lock lever 30a of the ball joint lock section 30, the ball joint 28 can be fixed at any bending angle. Moreover, a notch 28b1 is formed in the socket 28b so that the ball stud 28a can be accommodated inside (rearwardly) the bucket. Thereby, the structure above the ball stud 28a can be tilted toward the inside of the bucket toward the operator.

A flange portion 8 (see FIG. 2 described later) is provided at the lower end of the column 6 so as to project in the radial direction of the column 6. The configuration from the above-described toggle clamp 4 to the flange portion 8 is included in the operation rod fixing portion 2 of the remote operation rod support 1 according to the present embodiment. The operating rod fixing portion 2 is removable from the main body 10, which will be described next. Here, the operating rod fixing part 2 separated from the main body 10 is shown.

FIG. 2 is a perspective view of the operating rod fixing section 2. As shown in FIG. As described above, the flange portion 8 is formed to protrude from the lower end of the support column 6 in opposite directions in the radial direction. The flange portion 8 is formed into a flat plate shape, and is arranged such that the main surface having the largest area is perpendicular to the support column 6. Hereinafter, the direction along this main surface will be referred to as the in-plane direction with respect to the flange portion 8, and the direction intersecting the main surface will be referred to as the out-of-plane direction.

Returning to FIG. 1, a base 12 that removably supports the support column 6 side of the operating rod fixing portion 2 is arranged above the main body 10. A handrail mounting portion 20 is provided below the base 12 and can be attached to hang over the upper end of the handrail of the bucket to be installed. This handrail attachment part 20 is formed so that the upper end side of the handrail can be accommodated inside the inverted U-shaped notch.

A bucket fixing clamp 22 is provided below the handrail attachment part 20 for pressing and fixing the bucket from the outside while it is placed on the handrail of the bucket. This bucket fixing clamp 22 allows the main body 10 to be stabilized so as to be integrated with the bucket.

Further, below the handrail attachment section 20, a detachment prevention section 24 is also provided. Like the bucket fixing clamp 22, the detachment prevention part 24 is provided on the outside of the bucket. After the main body 10 is fixed by the bucket fixing clamp 22, it is locked by the detachment prevention part 24 to prevent the main body 10 from detaching from the bucket even if the bucket fixing clamp 22 becomes loose or slips. I can do it. The mechanism of this detachment prevention part 24 will be explained later using FIG. 6.

Next, referring to FIG. 3, the main body 10 is shown with the operating rod fixing portion 2 (see FIG. 1) removed. FIG. 3 is a perspective view of the main body 10 of the remote control rod support 1, and for convenience of explanation, shows a state in which the bucket fixing clamp 22 and detachment prevention part 24 are also removed. A base 12 is attached so as to be placed horizontally on the upper end of a handrail attachment part 20 in which plate members having the same inverted U shape are arranged side by side. An opening 16 a having the same shape as the outline of the flange portion 8 of the operation rod fixing portion 2 described above is formed on the upper surface side of the base 12 . The opening 16a is formed slightly larger than the outer shape of the flange portion 8 so that the flange portion 8 can pass in a direction out of the main surface. Thereby, the flange portion 8 of the operating rod fixing portion 2 can be fitted into the opening 16a from above. The fitted flange portion 8 can be slid into the inside of the base 12 by rotating the support column 6 as an axis. Furthermore, an index plunger 26 for fixing the flange portion 8 is provided on the side of the base 12. Next, the detailed structure of the base 12 will be explained using FIG. 4.

FIG. 4 is an exploded perspective view of the base 12 of the main body 10. The base 12 has a fixing seat 14 on the lowermost side, on which the flange portion 8 is placed and fixed. On the other hand, the above-described opening 16a is formed on the upper side of the base 12, and a flange cover 16 that covers the flange portion 8 placed on the fixed seat 14 is provided. Two spacers 18 of the same shape are provided between the fixed seat 14 and the flange cover 16 in a rotationally symmetrical arrangement of 180 degrees to form a space with a gap equal to the thickness of the flange portion 8. It is being

In FIG. 4, two directions in which the flange portion 8 is arranged with respect to the spacer 18 are indicated by auxiliary lines L2 and L3. The longitudinal direction of the flange portion 8 while passing through the opening 16a of the flange cover 16 is along the auxiliary line L2. When it is rotated about 90 degrees around the support 6 from this arrangement to the arrangement of the auxiliary line L3, the tip of the flange portion 8 appears in the gap between the two spacers 18, as indicated by the dotted line in FIG. A plunger mounting portion 14a is formed at a position on the fixing seat 14 where a gap is formed between the spacers 18, in which an index plunger 26 (see FIG. 3) for fixing the flange portion 8 is disposed. As shown in FIG. 4, the plunger mounting portion 14a is formed at a position opposite to the fixed seat 14, but if an index plunger 26 is provided on at least one side as shown in FIG. It is possible to stably fix the rotational position of 8 with less movement than the fastening structure.

Note that the spacer 18 according to the present embodiment has a rotation regulating portion 18a for regulating rotation at a position where the tip of the flange portion 8 is aligned with the gap formed between the spacers 18 so as to block the rotation range. It is placed prominently. With this configuration, alignment to the fixed position can be easily performed by simply rotating the flange portion 8 until it abuts against the rotation restriction portion 18a. Next, the shape of the flange portion 8 will be explained using FIG. 5.

5 shows the flange portion 8 of the operating rod fixing portion 2 of FIG. 2, FIG. 5(a) is a perspective view, and FIG. 5(b) is an enlarged view of the tip of the flange portion.

As described above, the flange portion 8 is a plate-like member formed to extend toward the opposite pole in the radial direction of the support column 6. The opposite direction in which the flange portion 8 extends is indicated by an auxiliary line L4 in FIG. A horizontal fitting part 8a and a vertical fitting part 8b are formed at the two opposite ends. In the enlarged view of FIG. 5(b), the direction in which the horizontal fitting portion 8a is fitted is represented by the above-mentioned auxiliary line L4, and the direction in which the vertical fitting portion 8b is fitted is represented by the auxiliary line L5. There is. The index plunger 26 shown in FIG. 3 is movable in the direction of the auxiliary line L4 and is configured to fit into the horizontal fitting portion 8a of the flange portion 8.

Note that instead of this horizontal fitting structure, it is also possible to use a plunger that is configured to be retractable in the direction of the auxiliary line L5. Further, an index plunger 26 that is horizontally fitted may be used in the direction of the auxiliary line L4, and a fastening and fixing mechanism using a screw may be used in the direction of the auxiliary line L5.

6 shows the operation of the detachment prevention part 24 of the remote control rod support 1 of FIG. 1, with FIG. 6(a) showing the released state and FIG. 6(b) showing the locked state.

Here, the handrail B2, which is a part of the bucket B to be fixed, is represented by a cross section with diagonal lines. The bucket B has an edge B1 formed to protrude outward from the handrail B2. A state in which the bucket B is pressed and fixed from the outside using the bucket fixing clamp 22 below the edge B1 is shown.

As shown in FIG. 6(a), the width of the inner space of the handrail attachment part 20 that accommodates the portion of the bucket B that includes the edge B1 and the handrail B2 is formed to a width that can accommodate at least the edge B1. need to be. Therefore, when the bucket fixing clamp 22 presses and fixes from the outside, a space is formed below the edge B1. The attachment state is stable because the bucket fixing clamp 22 is unlikely to be displaced by a force in an out-of-plane direction that is not along the vertical plane of the bucket B.

However, depending on the content of the work, a force may be generated in the in-plane direction along the vertical plane of the bucket B. If such a force exceeds the frictional force between bucket fixing clamp 22 and bucket B, bucket B may shift along the vertical plane. In the configuration according to this embodiment, a detachment prevention portion 24 is provided to stabilize against such displacement.

The detachment prevention part 24 is rotatably provided below the handrail attachment part 20 of the main body 10 shown in FIG. In the released state of FIG. 6(a), the detachment prevention part 24 is in a state of hanging downward, and the space below the edge B1 is vacant. In the detachment prevention part 24, in order to stabilize the hanging state, a position selection pin 24a is fitted into a release side recess 20a formed in the handrail attachment part 20 (see FIG. 3).

In the locked state shown in FIG. 6(b), the detachment prevention part 24 is lifted by turning about 90 degrees from the state shown in FIG. 6(a). As can be seen in FIG. 6(b), the swinging end of the detachment prevention part 24 is accommodated in the space below the edge B1 of the bucket B, and the lock side recess 20b formed in the handrail attachment part 20 (see FIG. (see) by fitting the position selection pin 24a into the position selection pin 24a. In this manner, in the locked state, the detachment prevention portion 24 is arranged to fill the space below the edge B1, so that the edge B1 can be prevented from detaching from the handrail attachment portion 20. Therefore, even if an external force is applied along the vertical surface of the bucket B, the handrail attachment part 20 can be prevented from detaching from the bucket B due to the edge B1 being caught by the detachment prevention part 24.

In the configuration according to this embodiment, two independent detachment prevention parts 24 are provided for the handrail attachment part 20. Thereby, even if an external force is applied in either the left or right direction along the vertical plane of the handrail of the bucket B, the remote control rod support 1 is stably maintained in a fixed state to the bucket.

Furthermore, as described above, the flange portion 8 is fixed to the base 12 at a rotational position protruding in the direction along the handrail B2 of the bucket B (see FIGS. 3 and 4). It can be stabilized against loads.

The configuration described above is an example of the present invention, and the following modifications are also included.

(1) In the above-described embodiment, the flange portion 8 has been shown as an example of a configuration in which two plate-like members are formed facing in two opposite directions with the support 6 as the center. However, a configuration in which one or more plate-like members extend radially outward of the support column 6 may also be used. With this configuration, the scaffold spreads out around the pillar 6, so that the force applied to the fixed seat 14 can be widely dispersed. Therefore, the stability of the operating rod fixing part 2 with respect to the main body 10 is improved.

(2) In the embodiment described above, the plate member of the flange portion 8 extending radially outward of the support column 6 has a rotationally symmetrical shape. However, the plurality of extending plate-like portions may have different shapes. With this configuration, it becomes easy to confirm the orientation of the operating rod fixing part 2 with respect to the main body 10 when attaching and detaching the operating rod fixing part 2.

(3) In the above embodiment, the lever 4a of the toggle clamp 4 that grips the remote control rod is configured to extend downward to apply clamping pressure in the fixed state. However, as long as it does not protrude in the direction perpendicular to the direction in which the clamping pressure is applied, it may be arranged to extend upward in the fixed state. With this configuration, it is possible to prevent the lever 4a from interfering with the operator or other tools during work when the remote control rod is in a fixed state.

(4) In the above embodiment, the configuration in which the shape of the opening 16a formed in the flange cover 16 is approximately the same as the outer shape of the flange portion 8 is shown as an example. However, if the flange part 8 can be moved in a direction out of its own plane to pass through the opening 16a, and if there is an area between the flange cover 16 and the fixed seat 14 in which the flange part 8 can be accommodated, , the shape of the opening 16a does not have to be the same as that of the flange portion 8.

(5) In the above-described embodiment, the detachment preventing portion 24 is configured to switch between the locked state and the released state by rotating the handrail attachment portion 20 of the main body 10. However, as long as it is configured to be able to move in and out toward the space below the edge B1 of the bucket B and can prevent the edge B1 from leaving, it may be configured to move in and out by linear movement.

1 Remote control rod support 2 Operation rod fixing part 4 Toggle clamp (grip part)
4a Lever 6 Pillar 8 Flange part 8a Horizontal fitting part 8b Vertical fitting part 10 Main body 12 Base 14 Fixed seat 14a Plunger mounting part 16 Flange cover 16a Opening 18 Spacer 18a Rotation regulating part 20 Handrail mounting part 20a Release side recess 20b Lock side recess 22 Bucket fixing clamp 24 Disengagement prevention part 24a Position selection pin 26 Index plunger 28 Ball joint 28a Ball stud 28a1 Ball head 28b Socket 28b1 Notch 30 Ball joint lock part 30a Lock lever B Bucket B1 Edge B2 Handrail L1, L2, L3, L4, L5 Auxiliary line S Remote control rod

Claims (4)

A remote control rod support that is attached to a handrail of a bucket of an aerial work vehicle and supports a remote control rod in an adjustable position,
an operating rod fixing section having an upper grip section for fixing the remote control rod, and a lower support column for supporting the grip section;
a base that removably supports the column side of the operation rod fixing part;
a main body having a handrail mounting part for disposing the base above and for attaching to the upper end of the handrail;
a detachment prevention part provided on the main body so as to be able to protrude and retract toward the space below the edge protruding outward from the upper end of the handrail, and preventing detachment of the edge accommodated in the handrail attachment part; A remote control rod support. The operation rod fixing part is
It has at least one flange portion extending in a flange shape in the radial direction from a part of the side surface of the support column,
The base is
a fixing seat on which the flange portion is placed and fixed;
A flange cover is provided above the fixed seat with a gap equal to the thickness of the flange portion, and has an opening through which the flange portion can pass in an out-of-plane direction of the flange surface. The remote control rod support according to claim 1. The remote control rod according to claim 1 or 2, wherein the base is provided with an index plunger that can fit into a recess formed in the flange portion at a position distant from the opening. Support. The gripping portion is
a ball stud with a ball head at the tip;
a toggle clamp that is configured to operate a lever in the direction in which the ball stud extends and provides a force for gripping the remote control rod;
The pillar is
4. The remote control rod support according to claim 3, further comprising a socket that accommodates the ball head and has a notch partially formed into which the ball stud can be inserted.

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