JP3272115B2 - Guardrail suspension - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a guardrail suspending device, and more particularly, to installing a guardrail on a road by bolting the guardrail to a guardrail support which is previously erected along the road. The present invention relates to a guardrail hoist used for lifting a vehicle from a state where it is arranged at a predetermined position of a transport vehicle or the like and positioning it along a column, which is mounted on a guardrail lifting moving device and used.

[0002]

2. Description of the Related Art The work of attaching a guardrail to a guardrail support standing upright along a road by bolting or the like,
Normally, a guardrail lifting / moving device is mounted, and a vehicle having the guardrails stacked and supported in a flat shape is moved to a guardrail installation position, where the guardrail on the vehicle is lifted by the lifting / moving device equipped with a lifting device, and is attached to a column. This is done by positioning.

[0003] As the guardrail suspension used at this time, there are known those which hold the guardrail by vacuum suction and those which hold it using a magnet.

[0004]

However, in both cases of the vacuum-suction type hanging device and the magnet-type hanging device, dust and oil are adhered to the suction holding surface of the guard rail and / or the suction holding surface of the hanging device. If rainwater or the like adheres and is contaminated, the suction holding power may be reduced, or slip may occur even if suction is performed, and it may be difficult to achieve its original purpose, or a danger of falling of the guardrail may be involved. Also, when wiping off dirt, oil, rain water, etc. with a rag or the like in order to solve such a problem, the work is troublesome,
There is a problem that extra labor and time are required to install the guardrail.

[0005] In addition, since a vacuum suction type hanging device requires a vacuum pump and its driving power, it becomes large and the cost increases. A means for generating a magnetic force is required even in the case of a magnet type suspender. Therefore, the present invention, even when dirt, oil, rainwater, etc. adhere to the guardrails and hanging tools and are slightly dirty, the guardrails can be securely held and lifted as they are, and can be safely positioned at predetermined positions. Also, a vacuum pump for the lifting equipment itself,
An object of the present invention is to provide a guardrail suspension which does not require electric power and magnetic force generating means, is simplified accordingly, and has a low running cost.

[0006]

In order to solve the above-mentioned problems, a guardrail suspender of the present invention has a first fixing claw for abuttingly engaging an inner surface of one side edge of a guardrail disposed at a predetermined position. At least one arm having a second fixed claw at the other end for abutting against the outer surface of the other side edge of the guardrail and being rotatably connected to one end of the arm. A first movable claw for abuttingly engaging the outer surface of one side edge of the guardrail to clamp the one side edge between the first fixed claw and a pivotal movement at the other end of the arm; One end of the arm, and a second movable claw that is connected so as to be able to abut and engage the inner surface of the other side edge of the guardrail to clamp the other side edge between the guard rail and the second fixed claw. A support member rotatably connected to and capable of being lifted, and the support member being lifted As a result, when the support member rotates relative to the arm, the first movable claw is interlocked with the rotation of the support member such that the first movable claw rotates in the guard rail clamping direction. A second interlocking mechanism for interlocking the second movable claw with the guard rail nipping operation of the first movable claw so that the second movable claw also performs the guard rail nipping operation with the interlocking mechanism and the guard rail nipping operation of the first movable claw. And characterized in that:

As the number of the arms, a pair of right and left arms is usually considered. The hanging device may be provided with a lock device for fixing the first movable claw at the guard rail sandwiching position. The connection of the support member rotatably connected to one end of the arm includes a case where the support member is directly rotatably connected to the arm body and a case where the support member is rotatably connected to another member provided on the arm body. The case where the connection is movably connected to the arm main body so as to be rotatable is also included.

[0008]

The lifting device of the present invention is mounted by connecting the support member directly or via another member to an operation end of a guardrail lifting / moving device mounted in advance on, for example, a guardrail transport vehicle. Under the operation of the moving device, the vehicle is conveyed onto a guardrail disposed at a predetermined position of the vehicle or the like. Here, the first fixed claw of the arm is brought into contact with the inner surface of one side edge of one guard rail, and the second fixed claw is brought into contact with the outer surface of the other side edge of the guard rail.

In this state, when the guard rail lifting / moving device starts lifting the lifting device of the present invention, the supporting member of the lifting device rotates relatively to the arm, and the first interlocking movement is caused by the rotation of the supporting member. First by the action of the mechanism
The movable claw is rotated so as to abut and engage with the outer surface of one side edge of the guard rail, and the one side edge is sandwiched between the movable claw and the first fixed claw. Further, the second movable claw also carries out the guard rail holding operation by the action of the second interlocking mechanism in accordance with the guard rail holding operation of the first movable claw, whereby the second movable claw comes into contact with and engages with the inner surface of the other side edge of the guard rail to form the second fixed member. The other side edge is sandwiched between the claws.

[0010] Thus, the guardrail is lifted with one side edge being sandwiched between the first fixed claw and the movable claw, and the other side edge is sandwiched between the second fixed claw and the movable claw, and is extended along the road. And is conveyed to a guardrail support which has been set up in advance, and is positioned on the support. Also, while the guardrail is suspended in this way, the gravity of the guardrail and the suspender itself continues to work to further rotate the support member with respect to the arm, whereby the clamping operation of the first and second movable claws is performed. It is securely held by the action of the first and second interlocking mechanisms and does not loosen.

When a lock device for fixing the first movable claw to the guard rail sandwiching position is provided, the movable claw is moved to the first position.
After the guard rail side edge is sandwiched between the fixed claw and the fixed claw, the movable claw can be locked at the sandwiched position by the locking device.

[0012]

Embodiments of the present invention will be described below with reference to the drawings. FIG. 1 is a side view of one embodiment, and FIG. 2 is a front view of the embodiment of FIG. 3 and 4 are explanatory diagrams of a use state. The illustrated guardrail hanger A includes a pair of mutually parallel arms 1, 1. Each arm 1 is formed by connecting a pair of parallel plate-like members 1a, 1a with an end of an upper connecting member 1b and a lower connecting member 1c.
The upper connecting member 1b extends over the left and right arms 1, 1, connects the arms 1, 1 to each other, and makes the arms 1, 1 parallel and opposed. Each arm 1 has a first fixed claw 2 at one end 11 and a second fixed claw 3 at the other end 12. These fixed claws 2 and 3 are formed on the plate-like member 1a and are oriented in substantially the same direction. The first fixing claw 2 is formed on the inner surface 91 of one side edge 91 of the guardrail 9.
The second fixed claw 3 is engaged with the outer surface 921 of the other side edge 92 of the guard rail 9. The mutual interval between the claws 2 and 3 is determined according to the width dimension of the guard rail 9 to be lifted, but the position of at least one of the claws 2 and 3 on the arm is adjusted so that the guard rails having different width dimensions can be accommodated. You may be able to. Alternatively, the arm 1 may be configured to be able to expand and contract.

A first movable claw 4 is further rotatably connected to one end 11 of each arm 1, and a second movable claw 5 is further rotatably connected to the other end 12. Each movable claw 4,
Numeral 5 is arranged and connected between the pair of plate members 1a, 1a in each arm 1. The first movable claw 4 is engaged with the outer surface 911 of the one side edge 91 of the guard rail 9, and faces the first fixed claw 2. The second movable claw 5 is engaged with the inner surface 922 of the other side edge portion 92 of the guard rail 9, and faces the second fixed claw 3.

A member 13 protrudes from one end 11 of each arm 1 toward the side opposite to the fixed claw 2. In the pair of arms 1, one protruding member 13 61 is rotatably penetrated. The lower ends of the pair of narrow-width bent plate-like support members 6, 6 are connected and fixed to the shaft 61 between the pair of projecting members 13, 13.

The upper ends of the support members 6, 6 are rotatably connected to both ends of a short bar member 62 parallel to the shaft 61. The member 62 has a plate-like member 63 protruding from its upper surface. I have.
In the center of the upper end portion of the member 63, a pin hole 6 for connecting with a pin P to a guardrail lifting and moving device B described later.
31 are provided. Bolt supporting members 65 are provided upright at both ends of the short bar member 63, and bolts 6
6 are screwed so as to face each other and at a predetermined interval between the bolts.

A compression coil spring 68 is fitted on each bolt 66. A lower end portion of an operation end member 104 of a guardrail lifting and moving device B described later is disposed between the pair of springs 68, 68, and the member 63 is connected to the member 104 by a pin P with a pin hole 631. You. The direction of the pin P is a direction perpendicular to the shaft 61. By the springs 68, 68 abutting on both side surfaces of the operation end member 104 in this manner, the posture of the hanging member A is elastically buffered so that the shaft 61 takes a horizontal posture.

Each end of the shaft 61 (the portion protruding outward from the protruding member 13) and the corresponding rear end 41 of the first movable claw 4 are connected by the first interlocking mechanism 7, respectively. I have. Each interlocking mechanism 7 includes an auxiliary arm 71 having one end fixed to an end of a shaft 61, the other end of the arm 71, and a movable claw 4.
And a connecting portion 72 for connecting. The connecting portion 72 is formed into a cylindrical female screw member 721, a male screw member 722 which is screwed into and out of the cylindrical female screw member 721, and is screwed to the male screw member 722, and is brought into contact with the female screw member 721, thereby forming a male screw member. Member 722
And a nut 723 for preventing the rotation of the auxiliary arm 71 and fixing the amount of protrusion.
The male screw member 722 is rotatably connected to the rear end 41 of the movable claw 4. Each connecting part 72 loosens its nut 723 to release the male screw member 722.
The overall length can be adjusted by adjusting the amount of protrusion of.

According to the interlocking mechanism 7, the pair of support members 6, 6 are pin-connected to the operation end member 104 of the guardrail lifting and moving device B via the short bar member 62 and the plate-like member 63, and are lifted. In the direction in which the arms 1 and 1 are to be in a linear posture (in the direction of arrow α in FIG. 1).
Is rotated to the first position via the shaft 61, the pair of auxiliary arms 71, 71 and the pair of connecting portions 72, 72.
The movable claws 4, 4 are transmitted to the rear end, and the claws 4, 4
The guard rail 9 rotates between the fixed claws 2 and 2 in a direction to clamp one side edge 91 of the guard rail 9. When the support members 6 and 6 are turned back, the operation is transmitted to the movable claws 4 and 4.
The claws 4, 4 rotate in a direction away from the fixed claws 2, 2.

In each arm 1, the first movable claw 4
And the second movable claw 5 are connected by a second interlocking mechanism 8. Each interlocking mechanism 8 includes a rod 81, a rod 82, and a rod access member 83 held at one end of the rod 82. One end of the rod 81 is rotatably connected to a portion near the rear end 41 of the first movable claw 4, and the other end is inserted into the rod access member 83 so as to be able to enter and exit. Rod 8
The other end of 2 is rotatably connected to the rear end 51 of the second movable claw 5. A compression coil spring 811 is fitted on an end of the rod 81 inserted into the rod access member 83, and a nut 813 is screwed into the end.

According to the second interlocking mechanism 8, the first movable claw 4
Is moved to the rear end portion 51 of the second movable claw 5 and the movable claw 5 is fixed so that the movable claw 5 clamps the other side edge 92 of the guard rail 9 together with the second fixed claw 3. It rotates toward the claw 3. When the first movable claw 4 rotates in the opposite direction, the operation is transmitted to the second movable claw 5,
The claw 5 rotates so as to separate from the fixed claw 3. The guardrail clamping force by the second movable claw 5 is adjusted by adjusting the position of the nut 812 on the rod 81 in the rod access member 83 in the interlocking mechanism 8 to adjust the spring 811 force.

Also, one end portion 11 of the pair of arms 1, 1
A lock device 15 is provided for the first movable claws 4 in 11. The lock device 15 includes a shaft 151 that is rotatably supported by the arms 1 and 1 below the claws 4 and 4.
Lock claws 152, 15 fixed to both ends of the shaft 151
2. It comprises an operation lever 153 fixed to one end of the shaft 151. According to the lock device 15, the lever 153 is manually turned in a state where the first movable claws 4, 4 and the first fixed claws 2, 2 sandwich the guard rail one side edge 91,
The lock claws 152, 152 abut against the claws 4, 4, and can be prevented from loosening and rotating.

A handle 10 is provided on the back of each arm 1. The above described fastener A is the operation end member 10 of the guardrail lifting and moving device B shown in FIGS.
4 and 4 are connected by pins as shown in FIGS. In this example, the device B is mounted in advance on the bed of the self-propelled vehicle C, and utilizes a lifting and moving device known per se.

The apparatus B has an apparatus main body 101 rotatable about a vertical axis, a parallel link mechanism 102 supported at one end by the main body and capable of moving up and down, and one end (upper end) supported by the parallel link mechanism 102. , An inverted L-shaped arm 103 rotatable about a vertical axis, and an operation end member 104 supported on the other end (lower end) of the arm 103. Tool A is connected. Note that the guardrail lifting and moving device to which the lifting device A is attached is not limited to the above. What is necessary is just to be able to lift the guardrail by attaching the hanging tool A and move it to a predetermined position.

In the present embodiment, a guardrail mounting portion D is formed along one side of the loading platform of the vehicle C, and a plurality of guardrails 9 are stacked and mounted in such a manner that both side edges 91 and 92 face upward. Is placed. In the stacked state, the side edges 91 and 92 of the uppermost guardrail 9 project in the rail width direction from the guardrail 9 below it, and can be sandwiched.

When the guardrail is installed, the vehicle is made to travel to the installation place, where the hanging device A is transported by the device B onto the guardrails 9 stacked as shown in FIGS. Here, when the operator operates the arm grip 10, each of the first fixed claws 2 is brought into contact with the inner surface 912 of the one side edge 91 of the uppermost guard rail 9 and each of the second fixed claws 3 is engaged. Is the other edge 9 of the guardrail.
The second outer surface 921 abuts and engages.

In this state, when the guardrail lifting / moving device B starts lifting the hanging member A, the pair of supporting members 6, 6 of the hanging member A rotate relatively to the arms 1, 1, and the supporting member rotates. With the operation of the first interlocking mechanism 7, each of the first movable claws 4 rotates so as to abut and engage with the outer surface 911 of the one side edge 91 of the guard rail 9, and the first movable claw 4 is positioned between the first movable claw 4 and the first fixed claw 2. One side edge 91 is sandwiched. Also, the first movable claw 4
With the operation of the second interlocking mechanism 8, the second movable claw 5 also performs the guardrail holding operation in accordance with the operation of the guardrail holding operation, whereby the second movable claw 5 is brought into contact with the inner surface 922 of the guardrail other side edge portion 92 to engage with the second fixed claw 3. The other side edge portion 92 is sandwiched between them.

Thus, the guard rail 9 has one side edge 9
1 is sandwiched between the first fixed claws 2, 2 and the movable claws 4, 4, and the other side edge 92 is lifted while being sandwiched between the second fixed claws 3, 3 and the movable claws 5, 5. It is conveyed to a guardrail support which is set up beforehand on the side of the road or on a median strip of the road, etc., is positioned on the support, and is fixed to the support by an operator.

Also, while the guard rail 9 is suspended in the posture shown in FIG.
Its own gravity keeps trying to further rotate the support members 6, 6 with respect to the arms 1, 1, whereby the clamping operation of each of the first and second movable claws 4, 5 is performed by the first and second interlocking mechanisms. It is securely held by the action of 7, 8 and does not loosen. Further, the movable claws 4, 4 can be safely locked at the holding position by the lock device 15, and therefore, the second movable claws 5, 5 can also be locked at the holding position.

[0029]

According to the present invention, even when dirt, oil, rainwater or the like adheres to the guardrail or the hanging tool and is slightly dirty, the guardrail is securely held and lifted as it is, and the guardrail or the hanging tool is safely positioned at a predetermined position. Can be positioned,
Further, a vacuum pump for the hanging tool itself, electric power and magnetic force generating means therefor are not required, so that a guardrail hanging tool whose simplification is achieved and running cost is low can be provided.

When a lock device for fixing the first movable claw to the guard rail holding position is provided, the movable claw is
After the guard rail side edge is sandwiched between the fixed claw and the guard claw, the movable claw can be locked at the sandwiched position by the locking device, so that the guard rail can be more securely and securely sandwiched and lifted.

[Brief description of the drawings]

FIG. 1 is a side view of one embodiment of the present invention.

FIG. 2 is a front view of the embodiment shown in FIG.

FIG. 3 is an explanatory view of a use state of the embodiment shown in FIG. 1;

FIG. 4 is an explanatory view of a use state showing the embodiment shown in FIG. 1 together with a guardrail lifting and moving device.

[Explanation of symbols]

 Reference Signs List A Suspension tool 1 arm 11 arm one end 12 arm other end 2 first fixed claw 3 second fixed claw 4 first movable claw 5 second movable claw 6 support member 7 first interlocking mechanism 8 second interlocking mechanism 15 locking device 9 Guard rail 91 Guard rail one side edge 911 One side edge outer surface 912 One side edge inner surface 92 Guard rail other side edge 921 Other side edge outer surface 922 Other side edge inner surface B Guard rail lifting / moving device 104 Device B operating end member

──────────────────────────────────────────────────続 き Continued on front page (58) Field surveyed (Int.Cl. ⁷ , DB name) B66C 1/42 B66C 1/48 B66C 1/68

Claims (2)

(57) [Claims] 1. A guard rail having a first fixing claw at one end for abutting engagement with an inner surface of one side edge of a guardrail disposed at a predetermined position and abutment on an outer surface of another side edge of the guardrail. At least one arm having a second fixing claw at the other end for engagement, rotatably connected to one end of the arm, and abuttingly engaging with an outer surface of one side edge of the guard rail, and A first movable claw for sandwiching the one side edge between the first fixed claw and the first movable claw; and a first movable claw rotatably connected to the other end of the arm and abutting against an inner surface of the guard rail other side edge. A second movable claw for clamping the other side edge between the second fixed claw and the second fixed claw; a support member rotatably connected to one end of the arm and being liftable; When the support member is rotated relative to the arm by being lifted, The first interlock mechanism that interlocks the first movable claw with the rotation of the support member so that the first movable claw rotates in the guard rail nipping direction, and the second interlock mechanism with the guard rail nipping operation of the first movable claw. A second link for interlocking the second movable claw with the guard rail clamping operation of the first movable claw so that the movable claw also performs guard rail clamping operation;
A guardrail lifting device comprising an interlocking mechanism. 2. The guardrail suspension according to claim 1, further comprising a lock device for fixing the first movable claw at a guardrail sandwiching position.