JPH08108940A - Electric pole gripping holding and raising-lowering device for truck - Google Patents

Abstract

PURPOSE: To automatically and reliably grip and raise and lower a frame stand of a truck and an electric pole on the ground, safely and speedily load and unload the electric pole, and load and unload it to either side of the left and right of the truck by rotating a rotay stand. CONSTITUTION: An electric pole gripping holding raising-lowering device constitutes a freely bendable arm A provided so as to be respectively and separately displaceable at an optional angle by rotary means 4 and 5 provided on support arms 2 and 3 to respectively connect upper and intermediate support arms to each other among plural support arms 1, 2 and 3, and is provided with an electric pole gripping holding device B which is provided on a support plate 8 of a rotary stand on which lower support arms 3 of the arms A are rotatably provided in plural places on an under carriage C of a truck by a driving means 7 or a support plate 8 provided on the under carriage C so as to be displaceable at an optional angle by an actuating means 9 and enables oscillation and opening-closing of the upper support arm 1 of the freely bendable arm A.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention This invention relates to a large number of long utility poles loaded on a truck or the like, for example, a concrete utility pole having a length of 18 m to 12 m, a diameter of 400 mm to 200 mm, and a weight of about 3000 kg. The present invention relates to an electric pole gripping lifting device for a truck that is used to move up and down from the ground to a pedestal.

[0002]

2. Description of the Related Art Conventionally, in a truck, when elevating a long utility pole on a pedestal provided on the chassis or on the ground, a winch wire provided on the chassis is wound around the utility pole and hung by the winch to gradually hang the winch wire. It is hoisted or unwound and then moved up and down and carried to a predetermined position.

[0003]

In the conventional method, when a truck is hung by a winch and is loaded or unloaded from the pedestal of a truck to the ground or from the ground to the pedestal, sometimes a wire comes off or breaks to cause a pole. It could be very dangerous because it could fall, the poles could be damaged, or a worker who loaded and unloaded the poles could get injured. In addition, it takes a lot of time and effort to tie and tie wires and remove them when loading and unloading electric poles, so that it is difficult for an operator to work alone.

The present invention solves the problem of loading and unloading utility poles on the frame of a truck or on the ground. A plurality of support arms are individually provided on the rotary table in front of and behind the truck chassis or on the chassis. A bendable arm that can be displaced at an angle is provided so that it can be displaced, and an electric pole gripping device is provided at the tip of the bendable arm, and an operation switch operates a control valve via a control panel to hydraulically bend the bendable arm to an arbitrary angle. Bend over to
In addition, the utility pole gripping device can be swung open and closed to automatically and reliably grip the platform of the truck or the utility pole on the ground to move up and down, safely and quickly load and unload the utility pole, and rotate the bendable arm. An object of the present invention is to provide a utility pole gripping lifting device for a truck that can be freely loaded and unloaded on either the left or right side of the chassis of a truck when it is provided on the platform by rotating a rotating platform.

[0005]

In the truck pole holding and elevating device of the present invention, the upper and middle support arms 1 and 2 of the plurality of support arms 1, 2 and 3 are provided at the tips of the support arms 2 and 3. On the other hand, a bendable arm A is supported by a turning means 4 and 5 composed of a hydraulic motor and a gear mechanism provided at the tip end thereof so as to be independently displaceable at an arbitrary angle and connected in a bendable manner. The supporting arm 3 below the bendable arm A is provided at a plurality of positions on the chassis C of the truck so that it can be rotated by the driving means 7 on the supporting plate 8 of the rotary table 6, and by operating means 9 such as a hydraulic cylinder. A pair of gripping members 10 and 11 that are supported so as to be displaceable at an angle and that grip the electric pole D on the support arm 1 above the bendable arm A can be freely swung by operating means 12 and 13 such as hydraulic cylinders. And the electric pole gripping device B that can be opened and closed freely For example, those which enables gripping lifting the frame E or on the ground of utility poles D undercarriage C.

Alternatively, the lower support arm 3 of the bendable arm A is supported by a support plate 8 provided at a plurality of positions on the chassis C of the truck so as to be displaceable at any angle by an operating means 9 such as a hydraulic cylinder, and A utility pole gripping device in which a pair of gripping members 10, 11 for gripping a utility pole D on a support arm 1 above the bendable arm A can be freely swung by operating means 12, 13 such as hydraulic cylinders and can be opened and closed freely. Equipped with B, chassis C
The electric pole D on the gantry E or on the ground can be held and moved up and down.

As the electric pole holding device B, a holding member 1 having arcuate holding portions 14 and 15 for holding the electric pole D at the tip.
A central portion of 0, 11 is pivotally supported by a pivot shaft 16, a lower end of one gripping member 10 is pivotally supported by a pivot shaft 17 with respect to an upper support arm 1, and a hydraulic cylinder 12 provided on the support arm 1.
Is connected to a pivot 18 at the rear of the gripping member 10 so that the gripping member 10 can be swung with respect to the support arm 1, and the other gripping member 11 of the gripping member 10 is connected to the hydraulic cylinder 1.
It is equipped with 3 openable and closable.

[0008]

[Operation] A plurality of electric poles D loaded on a truck stand E
When lowering the vehicle to the ground, the operating switch (remote control switch) is operated to control the operating valve via the control panel, and the rotating means 4, 5 and the operating means 9 are operated by hydraulic pressure to operate the support arms 1, 2, 3 respectively. Of the electric pole gripping device B of the upper supporting arm 1 by adjusting the angle of each of them separately and raising the bendable arm A.
It is lifted to the position of the upper utility pole D, and the operation switch is operated to hydraulically actuate the operating means 12 such as the hydraulic cylinder of the utility pole gripping device B to swing the gripping device and actuate the operating means 13. The gripping member 11 is opened with respect to the gripping member 10, and the gripping members 10 and 11 are closed against the utility pole D to grip the utility pole D,
After gripping the electric pole, the turning means 4, 5 and the actuating means 9 are actuated by the operation switch to turn the support arms 1 and 2, and the support arm 3 is lowered to move the bendable arm A to the chassis C. Is bent downwards to the side of the ground, and is lowered to near the ground, whereupon the operating switch is operated to actuate the actuating means 12 and 13 by hydraulic pressure to swing and position the gripping device B to grip the gripping member. Open and place utility pole D on the ground. After that, the flexible arm A is raised to lower the next electric pole, and the same operation is repeated,
The utility poles loaded on the mount are lowered in order.

In a truck equipped with the bendable arm A on the turntable 6 of the chassis C, when the electric pole is lowered to the installation location on the left or right side of the road, the turntable 6 is used without changing the direction of the truck. By simply rotating the arm 180 degrees and changing the direction of the bendable arm A in the opposite direction to the above, the utility pole can be automatically grasped and moved up and down on either side of the truck chassis.

[0010]

DESCRIPTION OF THE PREFERRED EMBODIMENTS The present invention will be described based on the embodiments shown in the drawings. In FIGS. 1 to 7, C is a chassis of a truck, and T-shaped utility pole cradle E having a high height is provided in front and rear of the chassis so that a long utility pole D can be projected and installed above the cab of the truck. The upper surface of the gantry E is provided with a concave surface 19 for receiving a plurality of electric poles D at regular intervals, the electric pole D is stably placed on the gantry E, and a holding member 1 of an electric pole holding device B described later.
It is easy to grasp the electric pole D with 0 and 11.

A is a bendable arm that can reach the height of the gantry E and can be bent and extended to the ground. The upper, middle, and lower support arms 1, which are metal tubes of approximately the same length,
Of the second and third supporting arms 2 and 3, which connect the upper supporting arm 1 and the intermediate supporting arm 2, respectively, the supporting arms 2 and 3 are rotated by the rotating means 4 and 5 including a hydraulic motor and a gear mechanism.
In contrast, each of them can be displaced at an arbitrary angle so that the bendable arm A can be moved upward and bent laterally downward, and the lower support arm 3 is driven back and forth on the chassis C of the truck. It is supported by a support plate 8 provided on a rotary table 6 which is rotatably provided by means 7, and a hydraulic cylinder 9 enables the support arm 3 to be undulated relative to the support plate 8 from a substantially horizontal position to a certain angle.

In the embodiment, of the bendable arm A, the fixing plates 2 are provided on both sides of the tip ends of the intermediate support arm 2 and the lower support arm 3.
0 and 21 are fixed, and pivots 22 and 2 fixed to the fixed plates 20 and 21 at the base ends of the upper support arm 1 and the intermediate support arm 2, respectively.
3 is pivotally supported, and pivots 22, 23 are provided on the side surfaces of the fixing plates 20, 21.
By connecting the hydraulic motor 24 and the gear mechanism 25 provided on the side surface of the fixed plate through a joint 26, and driving the hydraulic motor and gear mechanism by a drive source described later to rotate the pivot shafts 22, 23. Upper support arm 1 to intermediate support arm 2
On the other hand, the intermediate support arm 2 is rotated with respect to the lower support arm 3 to be displaced by a desired angle, and can be stopped and held by hydraulic pressure at a desired angle. In the embodiment, the upper support arm 1 and the intermediate support arm 2 are respectively connected to the support arms connected to each other.
It is equipped so that it can rotate by 0 degrees or more.

Lower support arm 3 of this bendable arm A
Fixes a support plate 27 to a base end side portion thereof, and rotatably supports the support plate 27 on a support shaft 8 of support plates 8 and 8 provided on a rotary table 6 described later and supports the rotary table 6. A base end of the hydraulic cylinder 9 is rotatably supported by a support shaft 30 of a bearing portion 29 provided between the plates 8 and 8, and a piston 9a of the cylinder 9 is supported by a shaft 32 of a support portion 31 at a lower end of the lower support arm 3. And the hydraulic cylinder 9 is hydraulically operated to move the lower support arm 3 to the support shaft 2
8 is provided as a fulcrum so that it can be raised and lowered within a certain angle range from a substantially horizontal position, and when the desired angle is reached, the support arm 3 can be stopped and held by hydraulic pressure.

FIG. 8 shows another embodiment in which the bendable arm A is directly installed on the chassis C of the truck. In this embodiment, a support plate 27 at the base end of the lower support arm 3 of the bendable arm A is pivotally supported by a pivot shaft 28 on a support plate 8 fixed to the front and rear of the chassis C of the truck, and a hydraulic cylinder 9 is mounted on the chassis C. Between the bearing portion 29 of the and the tip support portion 31 of the lower support arm 3,
The hydraulic cylinder 9 is hydraulically operated to provide the lower support arm 3 so that the lower support arm 3 can be lifted and lowered within a certain angle range from a substantially horizontal position above the support shaft 28 as a fulcrum, and when the desired angle is reached, the support arm 3 is stopped by the hydraulic pressure. Can be held.

The distance L ₁ between the support shaft 30 of the hydraulic cylinder 9 and the shaft 32 of the support portion 31 of the support arm 3 is the support arm 3
By making the distance L between the support shaft 28 and the fixed plate 21 shorter than the distance L, the hydraulic pump 9 applies hydraulic pressure to the hydraulic cylinder 9 in a substantially horizontal position to extend the piston 9a.
Is provided so that the tip side can be rotated upward with a pivot 28 as a fulcrum so as to be raised to a certain inclination angle. Conversely, when the piston 9a is contracted, the support arm 3 pivots the tip side downward and slightly lower than horizontal. It is provided so that it can descend to an inclined position. In the embodiment, the bendable arm A has three support arms, but the invention is not limited to this.

The rotary table 6 is for changing the direction of the bendable arm A, and has an opening 3 inside the frame E of the chassis C.
3, the rotary shaft 34 of the rotary table 6 is rotatably supported by the frame 35 in the opening, and the rotary shaft 34 is provided so that it can be driven by the driving means 7 such as a hydraulic motor through the gear mechanism 36. A rotary table 6 is provided so as to be horizontally reciprocally rotatable by 180 degrees by driving a motor. As shown in FIG. 7, the turntables 6 are respectively provided inside the electric pole receiving racks E installed in front and rear of the chassis C of the truck, and the electric pole gripping lifting device is provided on the rotary base to grasp the front and rear portions of the electric poles. , It can be raised and lowered. .

In the above embodiment, the hydraulic cylinder 9 is used as the operating means 9 of the lower support arm 3, and the hydraulic motor 2 is used as the rotating means 4 and 5 of the upper and middle support arms 1 and 2.
4 and the gear mechanism 25 are shown, but the present invention is not limited to this, and the lower support arm can also be hoisted by the hydraulic motor and the gear mechanism, or all the support arms can be rotated by hydraulic cylinders. It can also be dynamically displaced.

B is a holding member 10 or 11 for holding the electric pole D.
Is a utility pole gripping device that is opened and closed by operating means 12, 13 such as a hydraulic cylinder, and is provided on the upper support arm 1. The utility pole gripping device B of the embodiment is provided with an arc portion 37 that matches the utility pole D on the upper part,
In addition, a pair of plate bodies provided with a supporting piece 38 projecting at the center rear part is set as a set, and the arc-shaped gripping portion 1 is provided between the arc portions 37 of the plate bodies.
4 and an upper gripping member 10 formed with 4 and a pair of plate bodies provided with an arcuate portion 39 that matches the electric pole D at the lower part are set as a set, and the arcuate gripping portion 15 is formed between the arcuate portions 39 of the plate body. An opening / closing side gripping member 11 is provided, and the opening / closing side gripping member 11 is arranged between the pair of gripping members 10 and 10 to pivotally support a central portion by a pivot 16 and support a lower portion 40 of the gripping member 10 on an upper side. The arm 1 is rotatably supported by the support shaft 17, and the base end portion of the hydraulic cylinder 12 is pivotally supported by the support shaft 42 of the bearing 41 provided on the upper surface of the upper support arm 1, and the piston 12a thereof is supported by the support piece 38. The gripping member 10 is pivotally supported and connected to the support shaft 18, and the gripping member 10 is swingably provided to the support arm 1.

As a means for opening and closing the electric pole gripping members 10 and 11, a support member 43 fixed to the lower inner surface of the gripping member 10 is used.
A base end of the hydraulic cylinder 13 is rotatably supported, and its piston 13a is pivotally connected to a support shaft 45 of a fixing plate 44 projecting at the rear end of the opening-and-closing side gripping member 11, By the action of the cylinder 13, the opening / closing side gripping member 11 is gripped by the gripping member 10
It can be opened and closed. The gripping force of the gripping members 10 and 11 enables a utility pole having a weight of about 3000 kg to be hydraulically gripped and held. The support member 43 fixed to the holding member 10
A receiving rod 46 that receives the lower surface of the opening-and-closing side holding member 11 at a predetermined opening is provided at. In addition, a rubber or synthetic resin coating layer 47 is attached to the gripping members 10 and 11 so as not to scratch and prevent slipping when gripping the electric poles on the arcuate gripping portions 14 and 15.

As shown in the block diagram of FIG. 9, a truck engine 48, a transmission 49, a PTO (power distribution device) 50, a hydraulic pump 51, an operating valve 52, and an oil tank 53 are provided in association with each other, and the operating valve 52 is operated. A switch (remote control switch) 54 is connected via a control panel 55, and the operation valve 52 is connected to the hydraulic motors 24 of the support arms 2 and 3, the hydraulic cylinder 9 of the support arm 3, and the hydraulic cylinders 12 and 13 of the electric pole gripping device B. And a hydraulic motor 7 for driving the turntable 6
Then, the operation valve 52 is opened and closed through the control panel 56 by operating the remote control switch to individually operate the hydraulic motor 24, the hydraulic cylinder 9, the hydraulic cylinders 12 and 13, and the hydraulic motor 7.

The gripping and ascending / descending operations of the electric pole gripping lifting device of the present invention will be described. When unloading a large number of utility poles D loaded on a truck base E, the remote control switch 54 is operated to control the operation valve 52 via the control panel 55, and the hydraulic motor 24 and the hydraulic cylinder 9 are hydraulically operated. The support arms 1, 2 and 3 of the electric pole gripping lifting device arranged at the front and rear are individually raised and the angle with respect to the support arm or the support plate that is continuously provided is adjusted to raise the bendable arm A and the upper support arm 1 thereof. The electric pole gripping device B of No. 1 is moved to the position of the electric pole D of the gantry E, and the remote control switch 54 is operated in the same manner to hydraulically operate the hydraulic cylinders 12 and 13. Then, the opening / closing side gripping member 11 is opened with the hydraulic cylinder 13 against the gripping member 10 and applied from below the utility pole D, and then the gripping members 10 and 11 are closed to close the arcuate gripping portions 14 and 15. Power Grab the front and rear of.

After the electric pole gripping device B grips the front and rear portions of the electric pole D, the bendable arm A is slightly raised to lift the electric pole D slightly upward to remove it from the concave surface 19 of the pedestal E, and then each support. The hydraulic motors 24 and hydraulic cylinders 9 of the arms 1, 2 and 3 are operated to lower the support arm 3 of the bendable arm A to the original horizontal position as shown in FIG.
With respect to the support arm 2, the support arm 2 is rotated with respect to the support arm 3 so that the bendable arm A is rotated from the upper side to the lower side so that the utility pole holding device B keeps the utility pole D in a substantially horizontal state and near the ground. The gripping member 1 is moved down and the hydraulic cylinder 12 is operated.
0 is swung, and the hydraulic cylinder 13 is actuated at a desired position to open the grip portion of the open / close side grip member 11 and lower the utility pole D. By repeating this, the electric pole D on the pedestal is lowered in order.

When the bendable arm A is provided on the turntable 6 of the chassis C of the truck, the operation switch is operated according to the place where the utility pole is lowered to drive the drive means 7 to rotate the turntable via the gear mechanism. 6 can be rotated 180 degrees to bend the arm A
Toward the left or right side of the truck, and thereafter, by operating the bendable arm and the electric pole holding device as described above, the electric pole can be automatically held and lifted on either side of the truck.

After the work of lowering the utility pole is completed, the supporting arms 1, 2, 3 are folded as shown in FIG. Further, in the above-mentioned embodiment, the case of lowering the utility pole has been described, but it is needless to say that the utility pole on the ground can be grasped and lifted on the pedestal of the truck to be loaded.

[0025]

According to the present invention, when the utility pole loaded on the utility pole cradle of the truck chassis is lowered to the ground, or when the utility pole on the ground is loaded on the pedestal, the operation switch (remote control switch) automatically operates by hydraulic pressure. The flexible arm and the electric pole gripping device are operated to securely grasp the electric pole, and in that state, the electric pole is carried to the ground or the pedestal, and the electric pole holding device is operated to safely place the electric pole at a predetermined position on the ground or the pedestal. And can be put quickly. Since the operator can operate the operation switch on the safe side of the truck, the operator can work safely with one person with a margin.

When the bendable arm is provided on the turntable of the truck chassis, the turntable can be reversed by the operation switch to change the direction of the bendable arm. When sequentially lowering to a place, without changing the direction of the truck, it is convenient to invert the rotating platform according to the place to lower the utility pole and to lower the utility pole to the left or right side of the truck by the above operation. is there. Thus, according to the present invention, it is convenient to load and unload utility poles on a narrow road where the direction of the truck cannot be changed.

Since the utility pole gripping device can swing freely at the tip of the bendable arm and can open and close the gripping member, the utility pole can be easily gripped from any direction and can be securely held by hydraulic pressure. Since there is no need to worry about dropping utility poles during loading and unloading.

[Brief description of drawings]

FIG. 1 is a front view showing an electric pole gripping lifting device for trucks of the present invention.

FIG. 2 is a side view of the same.

FIG. 3 is a plan view of the same.

FIG. 4 is a perspective view showing an upper support arm and a telephone pole holding device.

FIG. 5 is a front view showing the swinging and open / closed states of the telephone pole holding device.

FIG. 6 is a front view showing an operating state of the telephone pole holding lifting device of the present invention.

FIG. 7 is a schematic side view showing a truck equipped with a telephone pole holding lifting device according to the present invention.

FIG. 8 is a front view showing another embodiment of the telephone pole holding lifting device according to the present invention.

FIG. 9 is a block diagram showing a drive source and a hydraulic system of the telephone pole holding lifting device of the present invention.

[Explanation of symbols]

 A flexible arm B electric pole gripping device C truck chassis D electric pole E frame 1 upper support arm 2 intermediate support arm 3 lower support arm 4 turning means 5 turning means 6 turning table 7 drive means 8 support plate 9 actuating means 10 Gripping member 11 Gripping member 12 Actuating means 13 Actuating means 14 Arc-shaped gripping part 15 Arc-shaped gripping part 16 Axis 17 Axis 18 Axis

Claims (3)

[Claims] 1. A plurality of support arms (1) (2) (3)
Of the support arms (2) and (3) that connect the upper and middle support arms (1) and (2), respectively, with respect to the front ends thereof, a rotating means including a hydraulic motor and a gear mechanism provided at the front ends ( 4) A bendable arm (A) which is separately supported by (5) so as to be displaceable at an arbitrary angle and is arranged in a bendable manner.
And a supporting base (3) below the bendable arm (A) at a plurality of positions on the chassis (C) of the truck for supporting a rotary base (6) rotatably provided by driving means (7). Board (8)
A pair of grips for movably supporting the movable cylinder (9) such as a hydraulic cylinder at any angle and for gripping the electric pole (D) on the support arm (1) above the bendable arm (A). Actuating means (12) for the members (10) (11) such as a hydraulic cylinder
In (13), a utility pole gripping device (B) that can be freely swung and open and close is provided, and it is possible to grip and raise and lower a utility pole (D) on a pedestal (E) of a chassis (C) or on the ground. A feature of a truck pole lifting device. 2. A plurality of support arms (1) (2) (3)
Of the support arms (2) and (3) that connect the upper and middle support arms (1) and (2), respectively, with respect to the front ends thereof, a rotating means including a hydraulic motor and a gear mechanism provided at the front ends ( 4) (5) constitutes a bendable arm (A) that is separately supported at a given angle so that it can be displaced at an arbitrary angle and is continuously bent. The support arm (3) below the bendable arm (A) is formed. Are supported by a supporting plate (8) provided at a plurality of positions on the chassis (C) of the truck so as to be displaceable at any angle by an operating means (9) such as a hydraulic cylinder, and the bendable arm (A).
A pair of gripping members (10) and (11) for gripping the electric pole (D) on the upper support arm (1) can be freely swung and opened and closed by operating means (12) and (13) such as a hydraulic cylinder. An electric pole gripping and elevating device for a truck, which is provided with the electric pole gripping device (B) described above and is capable of gripping and lifting an electric pole (D) on a pedestal (E) of a chassis (C) or on the ground. 3. A central portion of a gripping member (10) (11) having arcuate gripping portions (14) (15) for gripping a utility pole (D) at the tip as the utility pole gripping device (B). Axis (16)
And the lower end of one of the gripping members (10) is pivotally supported by the pivot shaft (17) with respect to the upper support arm (1) and the hydraulic cylinder (12) provided on the support arm (1) is The gripping member (10) is connected to a pivot (18) at the rear part of the gripping member (10) so as to be swingable with respect to the support arm (1), and the other of the gripping member (10) is provided. Gripping member (1
The utility pole gripping lifting device for trucks according to claim 1 or 2, wherein 1) is provided with a hydraulic cylinder (13) so as to be freely opened and closed.