JP2010240327A - Highly functional safety rope supporting device - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a highly functional safety rope supporting device for reliably supporting the safety rope for securing an operator's safety in a danger area, having excellent work efficiency. <P>SOLUTION: The safety rope supporting device chucks a peripheral surface of a handrail 30 provided along a traveling direction of a passage to move freely on the handrail, and front ends of a pair of curved arm members 3, 3 onto which the handrail 30 may be chucked are journaled in a freely openable and closable manner below a supporting member 1 having a ring 2 provided on an upper end thereof for engaging a hook 35 at the front end of the safety rope 34. Wheels 4 which rotate along a longitudinal direction on the peripheral surface of the handrail 30 are mounted on the arm member 3. Furthermore, a locking mechanism 6 is provided above the supporting member 1 for maintaining a state of the arm member 3 when the member is closed. <P>COPYRIGHT: (C)2011,JPO&INPIT

Description

  The present invention relates to a high-function lifeline support apparatus that can reliably support a lifeline for ensuring the safety of an operator in a dangerous place and is excellent in workability.

  Conventionally, in dangerous work locations such as power poles and other high-altitude work places and bridge supervisor passages, a lifeline such as a wire rope is used between the worker and the support device to ensure the safety of the worker. Linking is done.

  As such a support device, as shown in Patent Document 1 and Patent Document 2, for example, a simple device in which a hook is provided at the tip of a lifeline and the hook is hooked on a fixed object is generally used. Also, in work locations such as bridges, expressways, tunnels, etc., there are no special support devices, so handrails, balustrades, etc. are used as support tools. In addition, the other hook is hung on a handrail or the like to connect the two.

  However, at work locations such as bridges, expressways, tunnels, and other surveillance passages, workers move around the workplace along the passage, so if there is a handrail post, the hook is stopped there. There has been a problem that the above cannot slide. Therefore, the worker has to remove the hook from the handrail each time, straddle the strut, etc., and re-hang the hook on the handrail. As a result, there is a problem that work is frequently interrupted and the workability is inferior, and there is a problem that the danger increases because the connected state is instantaneously released when the hook is re-engaged.

  In addition, an inspection gallery with a width of about 1m is usually set up in the tunnel, but there are no fences or handrails. The use of a lifeline has been studied because it is dangerous to stumbling by looking aside, and it was desired to develop a lifeline support device with excellent workability and high safety that could be applied in tunnels. .

JP 7-299153 A JP 2003-135613 A

  The present invention solves the above-mentioned problems, can exhibit excellent workability without the trouble of re-hooking the hook at the tip of the lifeline on the handrail during the movement of work, and the connection state of the lifeline It was completed for the purpose of providing a high-function lifeline support device that is always secured and can ensure excellent safety.

  The high-function lifeline support device of the present invention made to solve the above problems chucks the outer peripheral surface of the handrail provided along the traveling direction of the passage, and freely moves on the handrail. In addition, the lower part of the support member provided with a lifeline locking ring part at the upper end can be freely opened and closed so that a gap is formed between the tip parts when the pair of curved arm members capable of chucking the handrail is closed. The arm member is mounted with a wheel that rotates on the outer peripheral surface of the handrail along the longitudinal direction, and a lock that holds the state when the arm member is closed above the support member. A mechanism is provided.

  Further, it is preferable that the wheels are mounted in two stages on each arm member so as to divide the outer periphery of the handrail into four equal parts.

  The lock mechanism is configured to maintain a locked state by covering a columnar part formed by overlapping a support member and an upper part of an arm member disposed so as to sandwich the support member with a slidable sleeve. Preferably, this is the invention according to claim 3.

  The lower part of the support member is provided with a projecting pin whose tip is projected outward by the elastic member, and the sleeve is provided with a groove for engaging the projecting pin on the inner peripheral surface. Thus, it is preferable that the locked state is maintained by the engagement between the protruding pin and the groove, and this is the invention according to claim 4.

  Furthermore, it is preferable that a wheel stopper is formed on the outer peripheral surface of the handrail, and this is the invention according to claim 5.

  In the invention according to claim 1, since the pair of curved arm members that can chuck the handrail are pivotally supported so as to be openable and closable so that a gap is formed between the front end portions, the handrail can be reliably chucked by the arm member. In addition, it is possible to pass through the portion without being affected by the handrail support or the like by the gap, so that it is not necessary to replace the hook of the lifeline. Further, since the arm member is held closed by the lock mechanism, safety can be ensured.

  Further, in the invention according to claim 2, since the wheels are mounted in two stages on each arm member so that the outer periphery of the handrail is divided into four equal parts, the lifeline support device supports the handrail from four directions and the lifeline support device is The top is made to move smoothly.

  In the invention according to claim 3, the lock mechanism covers the columnar portion formed by overlapping the support member and the upper portion of the arm member arranged so as to sandwich the support member with a slidable sleeve. Therefore, the locked state can be easily and reliably ensured only by raising and lowering the sleeve.

  In the invention according to claim 4, the lower part of the support member is provided with a projecting pin whose tip is projected outward by the elastic member, while the projecting pin is provided on the inner peripheral surface of the sleeve. Since the engaged groove portion is provided and the locked state is maintained by the engagement between the projecting pin and the groove portion, the locked state is ensured and the safety can be further improved.

  Further, in the invention according to claim 5, since the wheel stopper is formed on the outer peripheral surface of the handrail, the lifeline support device does not rotate on the handrail, and is safe and easy to use. It is excellent.

It is a perspective view which shows embodiment of this invention. It is a front view which shows the state which opened the arm member. It is a front view which shows the state which closed the arm member. FIG. 4 is a perspective view of FIG. 3. It is explanatory drawing which shows the use condition of this invention. (A) Unlocked state, (b) It is explanatory drawing which shows a locked state. It is explanatory drawing which shows other embodiment.

Hereinafter, preferred embodiments of the present invention will be described with reference to the drawings.
1 is a perspective view showing an example of a lifeline support device according to the present invention, FIGS. 2 to 3 are front views showing a state before and after mounting the device on a handrail, FIG. 4 is a perspective view of FIG. 3, and FIG. It is explanatory drawing which shows the use condition of invention.
In the figure, 30 is a round pipe-shaped handrail provided along the advancing direction of the passage at a dangerous work location such as a supervisory passage such as an expressway, 31 is a column for fixing the handrail 30, 32 is This is a connecting portion between the handrail 30 and the support 31. Then, as shown in FIG. 5, the operator uses the hook 35 at the tip of the lifeline 34 by connecting it to the lifeline support apparatus of the present invention.

The lifeline support device according to the present invention ensures the safety of the operator by freely moving on the handrail 30 while the outer peripheral surface of the handrail 30 provided along the traveling direction of the passage is chucked. .
A ring portion 2 for locking the lifeline 34 is provided at the upper end of the plate-like support member 1. A pair of curved arm members 3 and 3 capable of chucking the handrail 30 are pivotally supported on the lower portion so as to be openable and closable so as to chuck the handrail 30 by opening and closing their tip portions. Furthermore, the arm member 3 is configured such that a gap is formed between the tip portions when the arm member 3 is closed. In addition, 1a is the pivot part which pivotally supports the arm member 3 on the support member 1. FIG.
As a result, the handrail 30 can be easily chucked by the arm member 3, and the clearance is provided between the tip portions of the arm member 3, so that the handrail 30 moves on the handrail without any influence even if there is a connecting portion 32. Will be able to.

The arm member 3 is provided with a wheel 4 that rotates on the outer peripheral surface of the handrail 30 along the longitudinal direction. The wheel 4 rolls on the outer peripheral surface of the handrail 30 to move the lifeline support device. It is smooth.
The wheels 4 are mounted in two stages on each arm member 3 so as to divide the outer periphery of the handrail into four equal parts, and the handrail 30 is evenly supported from four sides to enable smooth movement of the lifeline support device. In the illustrated example, each stage is provided with a wheel support plate 5, and each wheel support plate 5 is provided with two front and rear wheels 4, 4, enabling smoother and more stable movement. I have to.
In addition, about the number of these wheels, it can set arbitrarily according to design conditions.

Further, a lock mechanism 6 is provided at an upper portion of the support member 1 for holding the arm members 3 and 3 when the arm members 3 and 3 are closed. The locking mechanism 6 includes a sleeve 7 that can slide up and down on a columnar portion formed by overlapping the support member 1 and the upper portions of two arm members 3 and 3 disposed so as to sandwich the support member 1. It is configured to hold the locked state by covering with.
That is, in the illustrated example, a cylindrical body is formed when the support member 1 and the upper portions of the two arm members 3 and 3 are overlapped so that the arm members 3 and 3 are closed. By covering with a cylindrical sleeve 7 slid downward, the state is fixed and held so that the cylindrical body is not disassembled.
Further, as shown in FIG. 6, the lower portion of the support member 1 is provided with a projecting pin 8 whose tip is projected outward by the elastic member 9 such as the helical spring 7, and on the other hand, the sleeve 7 is provided with a groove portion 7a to which the protruding pin 8 is engaged, and the locked state is maintained by the engagement between the protruding pin 8 and the groove portion 7a.
In the illustrated example, the case where the cylindrical body is formed has been described. However, the shape formed when the upper portions of the support member 1 and the two arm members 3 and 3 are overlapped, and the sleeve 7 covering the shape. Of course, in addition to the shape shown in the figure, for example, any shape such as an ellipse or a rectangle may be used.

  6A and 6B are explanatory views of the operation of the lock mechanism 6, wherein FIG. 6A shows the unlocked state, and FIG. 6B shows the locked state. That is, as shown in FIG. 6A, in the unlocked state, the cylindrical sleeve 7 is positioned on the upper side, and the arm members 3 and 3 are open. On the other hand, as shown in FIG. 6 (b), in the locked state, the sleeve 7 is slid downward and above the support member 1 and the two arm members 3 and 3 arranged so as to sandwich the support member 1 therebetween. The columnar part formed by overlapping the parts is covered, and the overlapping state is fixed and held. At this time, the protruding pin 8 is engaged with the groove portion 7a with its tip protruding outward due to the elastic member 9, and the locked state is more reliably maintained.

In the above description, the case where the shape of the handrail 30 is cylindrical has been described. However, it is also possible that the wheel stopper 30a is formed on the outer peripheral surface of the handrail 30.
FIG. 7 shows an example thereof, in which a rotation preventing portion 30 a formed by bending a plate-like body is bonded to the outer peripheral surface of the handrail 30. In this case, when the two wheels 4 are brought into close contact with the bent surface of the rotation preventing portion 30a, the lifeline support device is restricted from rotating. In addition, it is also possible to design freely, such as making it other arbitrary shapes as the rotation prevention part 30a, and forming in the handrail 30 integrally.

  In the high-function lifeline support device of the present invention configured as described above, as shown in FIG. 5, the hook 35 at the tip of the lifeline 34 is connected to the ring portion 2 for use. Since the hook 35 is directly hooked on the outer periphery of the arm 30, if there is the support column 31 or the connecting portion 32, the hook 35 cannot be slid more than that, and the operator removes the hook 35 from the handrail or the like each time, While it was necessary to re-hang the hook 35 on the handrail 30, in the present invention, a gap was formed between the tip portions of the arm member 3 so that the connecting portion 32 passed through the gap. There is no work of re-hooking the hook 35, and the working efficiency can be greatly improved. In addition, since the lifeline connection state is always ensured, the safety is high. Furthermore, since the wheels are mounted, the movement can be performed smoothly and excellent workability can be exhibited.

DESCRIPTION OF SYMBOLS 1 Support member 1a Numbering part 2 Ring part 3 Arm member 4 Wheel 5 Wheel support plate 6 Lock mechanism 7 Sleeve 7a Groove part 8 Protruding pin 9 Elastic member 30 Handrail 30a Non-rotating part 31 Column 32 Connecting part 34 Lifeline 35 Hook

Claims (5)

  A high-function lifeline support device that chucks the outer peripheral surface of a handrail provided along the traveling direction of the passage and moves freely on the handrail, and a support member provided with a lifeline locking ring portion at the upper end A pair of curved arm members capable of chucking the handrail are pivotally supported on the lower portion of the handrail so as to be openable and closable so that a gap is formed between the tip portions, and the arm member has a longitudinal direction on the outer peripheral surface of the handrail. A high-function lifeline support device is provided with a lock mechanism that is mounted with a wheel that rotates along the upper side of the support member and that holds the arm member when the arm member is closed above the support member.   The high-function lifeline support apparatus according to claim 1, wherein the wheels are mounted in two stages on each arm member so as to divide the outer periphery of the handrail into four equal parts.   The lock mechanism is configured to hold a locked state by covering a columnar portion formed by overlapping a support member and an upper portion of an arm member disposed so as to sandwich the support member with a slidable sleeve. The high-function lifeline support device according to claim 1 or 2.   The lower part of the support member is provided with a projecting pin whose tip is projected outward by the elastic member, while the inner peripheral surface of the sleeve is provided with a groove for engaging the projecting pin. The high-function lifeline support device according to claim 3, wherein the locked state is maintained by the engagement between the protruding pin and the groove.   The high-function lifeline support device according to any one of claims 1 to 4, wherein a wheel detent portion is formed on an outer peripheral surface of the handrail.

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