JPH08232221A - Guardrail correction tool - Google Patents

Abstract

PURPOSE: To provide a guardrail correction tool with which a deformed guardrail portion is easily repaired. CONSTITUTION: A guardrail correction tool 10 comprises a guardrail female form 13 fixed at lower end of a frame 12 and a guardrail male form 19 supported at a lower end of an arm 16 supported rotatably at a lower end of the frame 12 through a pin 17. The arm 16 is rotated with a hydraulic cylinder 14, 15. The male form 19 at the lower end opens/closes freely concerning the female form 13. And thus, deformed guardrail portion 30a is sandwiched in between these two. By tightening the male form 19, the portion 30a is corrected to its original form by press forming. In this case, the male form 19 is maintained in its inclination posture open downward by means of a weight 20, so that a deformed guardrail portion 20a is readily placed in between both two forms.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a guardrail repairing tool for repairing a guardrail which is deformed or damaged by collision of an automobile or the like, and a guardrail repairing device equipped with the same.

[0002]

2. Description of the Related Art When an automobile or the like collides with a guardrail and is deformed or damaged, the construction is carried out after obtaining approval for the construction to replace it with a new one. Therefore, until the approval is given, the deformed guardrail is left as it is.

However, the deformed guardrails may interfere with traffic, and when deformed on the side of the sidewalk, it interferes with pedestrians. You may get hurt.

Therefore, the deformed guardrail is
Even before the replacement with a new one by construction, it is preferable to repair it temporarily to prevent a secondary disaster during that time.

[0005]

However, conventionally, in such a case, there has not been proposed an instrument or device for repairing the guardrail in an emergency to correct the deformation or the like.

In view of this point, an object of the present invention is to propose a guardrail correction tool suitable for repairing a deformed guardrail. Another object of the present invention is to propose a guardrail correction device equipped with this guardrail correction tool.

[0007]

In order to solve the above-mentioned problems, the present invention relates to a guardrail correction tool which returns a deformed guardrail by press-molding it into its original shape. Corresponding male type and female type, male type supporting arm and female type supporting arm supporting the male type and female type so as to be relatively movable so as to be in an approaching state and a separating state, and the male type And a drive mechanism for relatively moving the female die.

In a preferred embodiment, the male support arm is attached to the female support arm in a rotatable state about a rotation shaft formed at a middle position, and is attached to the lower end of the male support arm. It is possible to adopt a configuration in which the male mold is connected and an operating rod of a fluid pressure cylinder fixedly supported on the female support arm side is connected to the upper end. In this case, the male mold is moved toward and away from the female mold by the rotation of the male mold support arm that is interlocked with the expansion and contraction of the working rod of the fluid pressure cylinder. Generally, a hydraulic cylinder can be used as the fluid pressure cylinder.

Further, the male die is rotatably connected to the lower end of the male die supporting arm, and the posture of the male die is adjusted to a position lower than the rotary shaft on the back side of the male die. It is desirable to attach a weight for use. By attaching the weight, the male mold is held in an inclined state in which the lower side is opened from the female mold. In this way, since the lower side of the male type and the female type spread,
A deformed guardrail can be easily inserted between them.

Further, the male support arm and the female support arm are provided with columns for pulling out the columns having an arcuate inner peripheral surface for sandwiching the columns of the guardrail from both sides and correcting the deformation or pulling out. Can be installed. In this way, using these molds, it is possible to modify the support posts as well as the guardrails. Also, the pillar can be pulled out.

Next, the present invention relates to a guardrail correction device provided with the guardrail correction device having the above-mentioned configuration, and the above-mentioned guardrail correction device, a support arm to which this guardrail correction device is attached at the tip, and this A structure having an arm drive mechanism for moving the support arm to move the guardrail correction tool three-dimensionally and a pedestal supporting the support arm and the arm drive mechanism is adopted.

The mount may be a vehicle body with wheels such as a truck, or a crawler truck such as a power shovel.

[0013]

[Operation] The repair work of the guardrail is performed as follows. For example, the guardrail correction tool is positioned above the deformed guardrail, and the male mold and the female mold are set in an open state. In the open state, lower the guardrail correction tool until the deformed part of the guardrail enters between the male mold and the female mold. After this, both molds are closed, tightened from the left and right, and press-molded. As a result,
The deformed guardrail returns to its original shape. The correction work may be repeated sequentially along the longitudinal direction of the guardrail.

[0014]

Embodiments of the present invention will be described below with reference to the drawings.

FIG. 1 shows an example of a guardrail repair work vehicle to which the present invention is applied. The guardrail repair vehicle of this example has a structure in which a guardrail repair tool is attached instead of the shovel attached to the tip of the support arm of a commercially available power shovel. That is, the guardrail repair work vehicle 1 includes a vehicle body 2, a crawler-type traveling wheel 3 supporting the vehicle body 2, a driver seat 4 formed on the vehicle body 2, and a vehicle body 2
The support arm 5 attached to the
It is composed of a guardrail correction tool 10 attached to the tip of the. Since the movement of the support arm 5 and its hydraulic drive mechanism are known, the description thereof is omitted here.

FIG. 2 shows a guardrail correction tool 10 of this embodiment.
Is taken out and shown. The guardrail correction tool 10 is
It has a mounting face plate 11 attached to a swivel face plate 51 attached to the tip of the support arm 5.
On the lower surface of 1, the frame (female type support arm) vertically from here
12 is fixed. The frame 12 is provided with left and right frame plates 12a and 12b and a frame plate 12c located between them. One of the frame plates 12a to 12c extends downward, and the guard rail female mold 1 is formed on the vertical inner side surface 121 of the projecting portion.
3 is fixedly supported in a vertical state.

In the upper portion of the frame plates 12a to 12c, two hydraulic cylinders 14 and 15 are provided between them.
Are installed almost horizontally. The tips of the operating rods 14a and 15a of the hydraulic cylinders 14 and 15 are respectively in an rotatably rotatable state, and the arms (male support arms) are
It is connected to the upper end of 16. The arm 16 has a shape in which the center is bent outward as a whole, and at the center position, the arm 16 is rotatably connected to the frame 12 via a support pin 17. A guardrail female die 19 is suspended from the lower end of the arm 16 via a connecting pin 18 in a vertically pivotable state.

Here, the female die 19 that is rotatably suspended has a weight 20 for posture control attached to a position below the connecting pin 18 on the back side thereof. Therefore, the weight holds the female die 19 in an inclined posture in which the lower side thereof is separated from the male die 13. Of course, the inclination angle can be adjusted by changing the weight of the weight.

Next, in the guardrail repair tool 10 of this example, brackets 21 and 22 for pulling out the support columns are attached adjacent to the male mold 13 and the female mold 19. These brackets 21 and 22 have three ribs 21a, 21b, 21c, 22a, 22b and 22c horizontally protruding on the inner surface thereof, and the inner end surfaces of these ribs are curved in conformity with the outer peripheral surface shape of the column. Is a face. Of course, instead of these brackets, a mold having a tubular curved surface of a shape that exactly fits the outer peripheral surface of the support may be attached.

Next, the guardrail correction work by the guardrail correction work vehicle 1 thus constructed will be described. The correction work vehicle 1 is driven to move to the position of the guardrail where the correction work is required and stop there. Then, as shown in FIG. 2, the guardrail correction tool 10 is positioned directly above the deformed portion of the guardrail 30. From this state,
The support arm 5 is operated to lower the guardrail correction tool 10 until the deformed guardrail portion 30a is located between the male mold and the female mold.

FIG. 3A shows the state after the descent. In this state, the left and right molds are opened to the maximum, and the male mold 19 is inclined so that its lower side opens outward by the weight 20 on the male mold back side. Therefore, female mold 1
3 and the lower opening of the male mold 19 are wide enough so that the deformed guardrail portion 30a can be easily inserted between them.

After that, the hydraulic cylinders 14 and 15 are driven to push out their operating rods 14a and 15b.
By this operation, the arm 16 connected to these pivots about the pin 17, and the lower end pivots inward. That is, the male die 19 approaches the female die 13 side.

FIG. 3A shows the male mold 19 in a completely closed state. As shown in this figure, the deformed guardrail portion 30a is inserted into the female mold 13 by the male mold 19.
It is pressed against the side of and is press-molded to become the original shape.

After the modified shape of the guardrail portion 30a thus deformed, the hydraulic cylinders 14 and 15 are
Is driven in the reverse direction to return the male mold 19 to the open state shown in FIG. After this, the place is moved and the same operation is repeated to correct the deformed shape of the guardrail portion.

In this example, brackets 21 and 22 for pulling out the support column 31 are attached to one side of these molds. Therefore, the bracket 31 can be easily pulled out by positioning and closing these brackets with respect to the pillar 31, and pulling up in this state. Further, if a correction mold is attached instead of the bracket, it is possible to correct the deformed support column 31 into a straight state by clamping the mold.

Here, the guardrail correction tool 10 can be driven by remote control from the driver's seat 4, so that the hydraulic cylinders 14 and 15 are hydraulically operated in the same manner as the drive mechanism of the support arm 5. The circuit is arranged.
Since a known circuit can be used as it is for such a circuit, the description thereof is omitted here.

Further, in this example, the guardrail correction tool 10 is used.
Is attached to the swivel surface plate 51 with respect to the support arm 5, and can be swung about a vertical axis. Therefore, even if the working vehicle 1 is stopped on any side of the guardrail 30, the guardrail can be corrected.

[0028]

As described above, according to the guardrail correction tool of the present invention, the deformed guardrail portion is press-molded by using the male mold and the female mold having the shapes matching both side surfaces of the guardrail. The deformed portion can be easily corrected.

[Brief description of drawings]

FIG. 1 is a schematic side view showing a guardrail repair work vehicle that is an embodiment of the present invention.

FIG. 2 is a schematic perspective view showing a part of a guardrail correction tool in the work vehicle of FIG.

3A and 3B are diagrams for explaining a guardrail correcting operation by the guardrail correcting tool of FIG. 2, FIG. 3A is an explanatory view showing a state where a male mold is open, and FIG. 3B is a male mold completely closed. It is explanatory drawing which shows a state.

[Explanation of symbols]

 1 Guardrail Repair Work Vehicle 5 Support Arm 10 Guardrail Repair Tool 11 Mounting Surface 12 Frame 13 Guardrail Female Type 14, 15 Hydraulic Cylinder 16 Arm 17, 18 Pin 19 Male Type 20 Weight 21, 22 Strut Extraction Bracket

Claims (7)

[Claims] 1. A guardrail correction tool for returning a deformed guardrail by press-molding it to its original shape, wherein a male mold and a female mold corresponding to the left and right surfaces of the guardrail and the male mold and the female mold are brought close to each other. A male support arm and a female support arm that are supported so as to be movable relative to each other so that the male mold and the female mold are relatively moved, and a drive mechanism for relatively moving the male mold and the female mold. A guardrail correction tool that does. 2. The male supporting arm according to claim 1,
It is attached to the female support arm in a state of being rotatable about a rotary shaft formed in the middle position, the male die is connected to the lower end of the male support arm, and the female die support is attached to the upper end. The working rod of the fluid pressure cylinder fixedly supported on the arm side is connected, and the male die is rotated relative to the female die by the rotation of the male die supporting arm that is interlocked with the expansion and contraction of the working rod of the fluid pressure cylinder. A guardrail correction tool characterized in that it is designed to approach and separate. 3. The male die according to claim 2, wherein the male die is rotatably connected to a lower end of the male die support arm, and the male die is provided at a position lower than the rotation shaft on the back side of the male die. , A guardrail correction tool having a male-type posture adjusting weight attached thereto. 4. The guard rail support pillar according to claim 1, further comprising: a guard rail post sandwiched between the male support arm and the female support arm, and the deformation thereof is corrected or pulled out. A guardrail repair tool, characterized in that a mold for pulling out a column having an arcuate inner peripheral surface for supporting is supported. 5. The guardrail correction tool according to claim 4, wherein the guardrail extraction mold is attached to at least one side of the male mold and the female mold. 6. The guardrail correction tool according to claim 3, a support arm to which the guardrail correction tool is attached at the tip, and the support arm are moved to move the guardrail correction tool three-dimensionally. A guardrail correction device, comprising: an arm drive mechanism for operating the support arm and a pedestal supporting the support arm and the arm drive mechanism. 7. The guardrail correction device according to claim 6, wherein the gantry is a vehicle body with wheels.