JP2012024500A - Fall preventing apparatus and fall preventing method using the same - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a fall preventing apparatus and a fall preventing method using the fall preventing apparatus that can be installed even in a narrow space while enabling a worker to move over the whole load-carrying platform region of a transport vehicle and surely preventing the fall of the worker.SOLUTION: The fall preventing apparatus 100 includes a pair of support pole bodies 10 and a wire 5 stretched across the pair of support pole bodies 10. The support pole body 10 includes a step board part 11 and a pole part 12 vertically erected from the step board part 11. The step board part 11 of one support pole body 10 is fixed when one wheel A of the transport vehicle 1 runs up thereon, and the step board part 11 of the other support pole body 10 is fixed when the other wheel B of the transport vehicle 1 runs up thereon. A safety belt 6 for a human body is slidably attached to the wire 5.

Description

  The present invention relates to a fall prevention device and a fall prevention method using the fall prevention device. More specifically, the fall prevention device can be installed even in a narrow space, and an operator can move across the entire loading platform of a transport vehicle. The present invention also relates to a fall prevention device that can reliably prevent a worker from falling and a fall prevention method using the fall prevention device.

Generally, when unloading a load from a transport vehicle such as a truck or a trailer, an operator climbs on the load and performs a cargo handling operation.
Therefore, when the load is large, the worker is forced to carry out the cargo handling work at a high place, and when the load collapses, the worker may be caught and fall.

As described above, since the cargo handling work on the load is dangerous, a fall prevention device for protecting the safety of the worker has been studied.
For example, an extendable support post is installed on an automobile, a horizontal arm is provided at the upper end, a safety block is connected to the tip of the horizontal arm, and a hook part provided at the tip of the wire rope is attached to the loading platform of the transport vehicle. There is known a vehicle for preventing a fall from a transportation vehicle in which a cargo handling operation for the transportation vehicle is performed in a state in which a safety band of a worker on board is connected (for example, see Patent Document 1).

JP 2002-104776 A

However, the crash-preventing automobile described in Patent Document 1 has a drawback that it cannot be used unless there is a sufficiently large space because the fall-preventing automobile needs to be placed next to the transport vehicle.
In addition, there is a drawback that the range in which the worker can move is limited by the position of the crash-preventing automobile.

  The present invention has been made in view of the above circumstances, can be installed even in a narrow space, can move the worker across the entire loading platform of the transport vehicle, and fall of the worker An object of the present invention is to provide a fall prevention device that can reliably prevent the fall and a fall prevention method using the fall prevention device.

  The inventors of the present invention have intensively studied to solve the above-mentioned problems, and by fixing the position of the support column body and the support column body using the weight of the transport vehicle itself and stretching the wire on the support column body, The inventors have found that the present invention can be solved, and have completed the present invention.

  That is, the present invention is (1) a fall prevention device comprising a pair of support pillars and a wire stretched between the pair of support pillars, wherein the support pillars comprise the footboard part and the footboard part. It is composed of a pillar part standing vertically from one side, and the step board part of one support pillar body is fixed when one wheel of the transportation vehicle rides on, and the foot board part of the other support pillar body is fixed to the other wheel of the transportation vehicle. The fall prevention device has a human body safety band slidably attached to the wire.

  The present invention resides in (2) the fall prevention device according to the above (1), wherein the step board portion is formed on one side of the column portion.

  In the present invention, (3) the guide portion for inserting the wire is provided at the upper end of the pillar portion, and the fixing portion for fixing the wire is provided below the guide portion. It exists in the fall prevention apparatus as described in (2).

  The present invention resides in (4) the fall prevention device according to the above (3), wherein the guide portion is an arc pipe and the fixing portion is a hook.

  This invention exists in the fall prevention apparatus as described in any one of said (1)-(4) by which a pair of convex rib for preventing the movement of a wheel is formed in the foot board part.

  This invention exists in the fall prevention apparatus as described in any one of said (1)-(5) in which the height of (6) pillar part is adjustable.

  The present invention is (7) a fall prevention method using the fall prevention device according to any one of (1) to (6) above, wherein a pair of support pillars are arranged and a transport vehicle is moved. The stepping plate part of the supporting column arranged on one side is stepped on with one wheel of the transport vehicle, and the stepping plate part of the supporting column arranged on the other side is stepped on with the other wheel of the transporting vehicle. A fall prevention method in which a wire is stretched between the two and a human safety band is slidably attached to the wire.

The fall prevention device of the present invention has a structure in which a pair of support pillars are fixed in position using the weight of the transport vehicle itself, and a wire is stretched between them, so it is compact and has a narrow space. Even can be installed.
In particular, when the tread plate portion is formed on one side of the column portion, the fall prevention device can be installed even in a very small space.
Further, by attaching a safety band for human body to the wire so as to be slidable, an operator can move over the entire loading platform of the transport vehicle.
Therefore, according to the above-described fall prevention device, it is possible to reliably prevent the worker from dropping and to improve workability.

In the fall prevention device of the present invention, when the guide part is an arc pipe and the fixing part is a hook, the wire can be easily attached.
Moreover, the breakage of the wire can be suppressed.

  In the fall prevention device of the present invention, when a pair of convex ribs for preventing the movement of the wheel is formed on the tread plate portion, the wheel can be securely held, and the inadvertent movement of the wheel is also prevented. Is done.

  In the fall prevention device of the present invention, when the height of the column portion is adjustable, it is possible to stretch the wire at an optimum position according to the size of the transportation vehicle or the loading platform.

  In the fall prevention method of the present invention, the fall prevention device can be installed even in a narrow space, the worker can move across the entire loading platform of the transport vehicle, and the fall of the worker is surely prevented. it can.

(A) of FIG. 1 is a side view which shows one Embodiment of the installation state of the fall prevention apparatus based on this invention, (b) is the rear view. (A) of FIG. 2 is a side view which shows the support pillar body of the fall prevention apparatus which concerns on this embodiment, (b) is the front view. FIG. 3 is a rear view showing another embodiment of the installation state of the fall prevention device according to the present invention. (A) of FIG. 4 is a side view which shows the support pillar body of the fall prevention apparatus which concerns on other embodiment, (b) is the front view.

Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the drawings as necessary.
In the drawings, the same elements are denoted by the same reference numerals, and redundant description is omitted.
Further, the positional relationship such as up, down, left and right is based on the positional relationship shown in the drawings unless otherwise specified. Further, the dimensional ratios in the drawings are not limited to the illustrated ratios.

(A) of FIG. 1 is a side view which shows the installation state of the fall prevention apparatus based on this invention, (b) is the rear view.
As shown to (a) of FIG. 1, the fall prevention apparatus 100 which concerns on this embodiment is provided with a pair of support pillar 10 and the wire 5 stretched by this pair of support pillar 10.
Further, the position of the pair of support pillars 10 is fixed by the wheel A and the wheel B of the transport vehicle 1.
In other words, the fall prevention device 100 has a structure in which the position of the pair of support pillars 10 is reliably fixed using the weight of the transport vehicle 1 itself, and the wire 5 is stretched on the pair.
Therefore, the worker can prevent the fall from the loading platform of the transport vehicle by attaching the safety band 6 for the human body worn on the wire 5 to carry out the cargo handling work. It can remain on the platform of the vehicle.

(A) of FIG. 2 is a side view which shows the support pillar body of the fall prevention apparatus which concerns on this embodiment, (b) is the front view.
As shown in FIGS. 2A and 2B, the support column body 10 includes a tread plate portion 11 and a column portion 12 erected vertically from the tread plate portion 11.

The footboard portion 11 is a portion on which the wheel of the transport vehicle is ridden, and is formed on one side with respect to the column portion 12.
That is, the support column 10 has a side L shape.
For this reason, in the fall prevention apparatus 100, since it arrange | positions so that a wheel may be run on the tread board part 11, it is very compact and can be installed even if it is a small space.

In the support column 10, the tread plate portion 11 is formed with a pair of convex ribs 11 a for preventing the wheel from moving.
Thereby, when a wheel rides on the tread board 11, the wheel can be reliably held or the movement of the wheel can be prevented.
The convex rib 11a may be fixed or movable.

As for the pillar part 12, the three support tools 13 are attached to the lower pillar part 12a.
Thereby, even if the support pillar 10 is a case where force is added to the arrow X direction, the pillar part 12 is reinforced so that it may not fall down.

In the column portion 12, the upper column portion 12b is inserted into the lower column portion 12a, and the upper column portion 12b is slidable with respect to the lower column portion 12a.
That is, the height can be freely adjusted by sliding the inserted upper column part 12b with respect to the fixed lower column part 12a.
Moreover, the fastening part 15 is provided in the middle part of the column part 12, and the slide of the upper pillar part 12b can be fixed in a desired position with this fastening part 15.
For example, a plurality of through holes may be provided in the upper column part 12b and the lower column part 12a in the vertical direction, respectively, and a fixing pin P may be inserted and fixed in common in both the through holes.
Thus, since the height of the column part 12 is adjustable, the support column 10 can be used regardless of the height of the transport vehicle and the size of the loading platform.

  The column portion 12 is provided with a guide portion 16 for inserting the wire 5 at the upper end of the upper column portion 12b, and the wire 5 is connected to the lower column portion 12a of the column portion 12 below the guide portion 16. A fixing portion 17 for fixing is provided.

The guide part 16 is an arc-shaped pipe, and the inside is hollow so that the wire 5 can be passed.
Therefore, by guiding the wire 5 to the guide portion 16, the direction of the wire 5 can be easily changed by 90 degrees from the horizontal direction to the downward direction, and does not come off the column portion 12.
The angle of the guide portion 16 can also be changed in the horizontal direction.
In this case, a plurality of through holes are provided around the upper column part 12 b, and a fixing pin P is inserted and fixed in common to one of the through holes and the through hole of the guide part 16.

Here, the fixing portion 17 is a J-shaped hook and is adapted to hook the tip of the wire 5.
Therefore, in this case, the wire 5 preferably has a ring-shaped portion to be hooked on the tip.
As described above, the support column 10 includes the guide portion 16 and the fixing portion 17 having a predetermined shape, so that the wire 5 can be easily attached.

In the fall prevention device 100 according to the present embodiment, the human safety band 6 is slidably attached to the wires 5 stretched between the pair of support pillars 10.
Then, by sliding the human safety band 6 along the wire 5, the worker can move across the entire loading platform of the transport vehicle 1.
In addition, a well-known thing is used suitably for the safety belt 6 for human bodies.
Therefore, according to the fall prevention device 100, it is possible to reliably prevent a worker from dropping and to improve workability.

Next, a fall prevention method using the fall prevention device 100 according to the present embodiment will be described.
As shown in FIGS. 1A and 1B, first, a support column (hereinafter also referred to as “first support column”) 10 and a support column (hereinafter referred to as “second support” for convenience). The height is adjusted by sliding the upper column portion of the ten column bodies 12.

Then, the wire 5 is attached between the first support pillar 10 and the second support pillar 10.
One end of the wire 5 is fixed to the fixing portion 17 of the first support column body 10, and the other end is inserted into the guide portion 16 of the first support column body 10, followed by the guide portion of the second support column body 10. It is attached by being inserted through 16 and fixed to the fixing portion 17 of the second support column 10.
However, it is also possible to attach the wire 5 between the first support column 10 and the second support column 10 in advance.

Next, for example, a pair of support pillars 10 are arranged in the front-rear direction, the transport vehicle 1 is moved, and the stepping plate portion 11 of the first support pillar 10 disposed in front is stepped on the wheels A in front of the transport vehicle 1. At the same time, the tread plate portion 11 of the second support pillar 10 disposed on the rear side is stepped on with the wheel B on the rear side of the transport vehicle 1.
Thereby, the 1st support pillar 10 and the 2nd support pillar 10 are held certainly, and do not move.

In addition, as needed, the upper column part of the column 12 of the first support column 10 and the second support column 10 is slid to readjust the height.
Then, tension is applied to the wire 5 between the first support column 10 and the second support column 10.
Thus, the fall prevention device 100 is installed.
Then, the worker carries out the cargo handling work by slidably attaching the worn safety band 6 to the wire 5 of the fall prevention device 100.

  In the fall prevention method according to the present embodiment, the fall prevention device 100 can be installed even in a narrow space, the worker can move across the entire loading platform of the transport vehicle, and the worker can be dropped. It can be surely prevented.

  The preferred embodiment of the present invention has been described above, but the present invention is not limited to the above embodiment.

  For example, in the fall prevention device 100 according to the present embodiment, the support pillars are arranged on the front wheel and the rear wheel on one side of the transport vehicle, but can also be arranged on the front wheels or on the rear wheels. is there.

FIG. 3 is a rear view showing another embodiment of the installation state of the fall prevention device according to the present invention.
As shown in FIG. 3, the fall prevention device 100 may arrange one support pillar 20 on the left wheel of the transportation vehicle and arrange the other support pillar 20 on the right wheel of the transportation vehicle.

(A) of FIG. 4 is a side view which shows the support pillar body of the fall prevention apparatus which concerns on other embodiment, (b) is the front view.
As shown to (a) and (b) of FIG. 4, as for the support pillar 10, the direction of the guide part 16 differs 90 degree | times.
In addition, except this, it is the same as the support pillar 10 of the fall prevention device 100 according to the present embodiment.

In the fall prevention device 100 according to the present embodiment, the guide portion is an arc pipe and the fixing portion is a hook, but the shape is not limited to this.
For example, a notch-like long groove may be provided in the arc pipe of the guide portion.
In this case, the wire can be easily inserted into the arc pipe through the long groove.
The guide unit may be a rotatable pulley.
On the other hand, the fixing portion may include a winding device that winds the wire.

The fall prevention device of the present invention can be suitably used as a safety device for workers during cargo handling work of transport vehicles.
According to the fall prevention device of the present invention, it can be installed even in a narrow space, the worker can move over the entire loading platform of the transport vehicle, and the fall of the worker is surely prevented. it can.

DESCRIPTION OF SYMBOLS 1 ... Transport vehicle 5 ... Wire 6 ... Safety band for human bodies 10 ... Support pillar (1st support pillar, 2nd support pillar)
DESCRIPTION OF SYMBOLS 11 ... Tread board part 11a ... Convex rib 12 ... Column part 12a ... Lower pillar part 12b ... Upper pillar part 13 ... Supporting tool 15 ... Fastening part 16 ... Guide part 17 ... Fixing part 100 ... Fall prevention device A, B ... Wheel P ... Set pin

Claims (7)

A fall prevention device comprising a pair of support pillars and a wire stretched between the pair of support pillars,
The support column body is composed of a tread plate portion and a column portion erected vertically from the tread plate portion,
The tread plate portion of one support pillar is fixed by the one wheel of the transport vehicle riding on, and the tread plate portion of the other support pillar is fixed by the other wheel riding of the transport vehicle,
A fall prevention device in which a safety band for a human body is slidably attached to the wire.   The fall prevention device according to claim 1, wherein the tread plate portion is formed on one side of the column portion. A guide portion for inserting the wire is provided at the upper end of the column portion,
The fall prevention device according to claim 1 or 2, wherein a fixing portion for fixing the wire is provided below the guide portion.   The fall prevention device according to claim 3, wherein the guide portion is an arc-shaped pipe, and the fixing portion is a hook.   The fall prevention device according to any one of claims 1 to 4, wherein a pair of convex ribs for preventing movement of the wheel is formed on the tread plate portion.   The fall prevention device according to any one of claims 1 to 5, wherein a height of the column portion is adjustable. A fall prevention method using the fall prevention device according to any one of claims 1 to 6,
By placing a pair of support pillars and moving the transport vehicle, step on the footboard part of the support pillar placed on one side with one wheel of the transport vehicle and simultaneously stepping on the support pillar body placed on the other The fall prevention method which attaches a safety belt for human bodies to the wire slidably by stepping on the other wheel of the transport vehicle, stretching a wire between the support pillars.

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