JPH0810315Y2 - Lifting safety device - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION (Industrial field of application) The present invention relates to an improvement of a safety device used for preventing a fall when climbing up and down at a high place.

(Prior art and problems) As a conventional fall prevention device for ascending and descending in high places, a safety device is fitted to the busbar rope and connected to the human body.
In the unlikely event of a crash, turning the claws inside the safety device
It pushes the busbar rope and stops at that point to prevent it from falling to the ground.

However, the claw that presses the rope has directionality,
The action of pressing the rope to stop it cannot be achieved unless the rope is turned upward from below. In other words, the rope connecting ring for connecting the claw and the human body is located so as to sandwich the pivot shaft, which is the rotation axis, so if the rope connecting ring falls due to the fall of the human body, the claw will rotate upward. It is a mechanism that pushes the rope.

Therefore, if the upper and lower parts of the safety device were accidentally fitted to the busbar rope, the pawl would not be able to achieve the purpose of preventing the fall by rotating in the opposite direction of the rope, that is, the direction away from the rope, when falling. .

Therefore, although the safety device has a cautionary note when fitting, some workers still see dangerous use.

(Means for Solving the Problems) Therefore, in the present application, if the vertical direction of the safety device is reversed, the pivotal shaft of the claw cannot be fixed, and the safety device itself cannot be fitted on the busbar rope. The method is as follows: between the pivot shaft and the sliding shaft fitted to the pivot shaft,
Or, let the guide pin spontaneously drop from inside the sliding shaft itself,
Since it prevents the connection between the two and always falls due to gravity, there is absolutely no possibility of fitting the busbar rope in the opposite direction.

(Embodiment) As one embodiment of the present invention, a hinge 2 is provided on one side,
From an end face approximate U-shaped rope insertion holder 1 provided with an opening / closing member 3 on the other side, and a locking member 6 provided with an approximate fan-shaped stop claw 4 at one end and a rope coupling ring 5 at the other end. And a shaft hole is provided in the central portion of the locking member 6 to which the pivot shaft 7 is fitted, and one end of the pivot shaft 7 is attached to the hinge 2 of the rope insertion holder 1.
Is pivotably attached to the other end of the pivot shaft 7, and the other end of the pivot shaft 7 is opened and closed by fitting or engaging the sliding shaft 8 of the opening / closing member 3 of the rope insertion holder 1. 3 is a structure in which the operation plate 9 is rotated against the spring, and the sliding shaft 8 connected to the operation plate 9 is subsequently pulled out to one side to release the latch of the pivot shaft 7. The sliding shaft 8 slides and one of the sliding cylinders 11 is divided into two by the groove 10 that is received to fit the pivot shaft 7, that is, the upper position when trying to fit the rope in the upside down direction. The pin cylinder 13 is fixed to the sliding shaft cylinder 12, and the safety pin 14 is fitted in the pin cylinder 13. A stopper is provided at a predetermined position inside the pin tube body 13 to correspond to the shape of the safety pin 14 to prevent the safety pin 14 from coming off, and the protruding length thereof is rotated into the groove 10 between the sliding shaft tubes 12. The length is set to prevent the pivot shaft 7 from being fitted.

Although the invention of the present invention having the above-mentioned structure is intended to be fitted onto the rope in the normal state shown in FIG. 1, the safety pin 14 remains in the pin tube body 13 and the sliding shaft tube 12 of the pivot shaft 7 remains. When the direction is reversed as shown in FIG. 2, the safety pin 14 projects downward due to gravity, and the pivot shaft 7 and the sliding shaft 8 can be inserted. It prevents the mating with and avoids the wrong use condition.

In another embodiment, the pin cylinder 13 is not provided separately, but the sliding shaft 8 is used as a substitute to achieve the same purpose.

(Effect of device) As described above, by using the device of the present invention, it is absolutely impossible to mount the safety device for raising and lowering a high place on the busbar rope in the wrong direction, and an accident due to carelessness may occur. Can be prevented.

[Brief description of drawings]

 FIG. 1 is a perspective view of the safety device of the present application. FIG. 2 is an explanatory view of the opposite direction. FIG. 3 is a partially cutaway right side view of another embodiment. FIG. 4 is a partially cutaway front view of the safety device of the present application. FIG. 5 is a right side view in which a part of the safety device of the present application is cut away. FIG. 6 is a plan view of the safety device of the present application. FIG. 7 is a front view of the rope insertion portion opened. Reference numeral in the figure: 1 ... Rope insertion holder, 2 ... Hinge 3 ... Opening / closing member, 4 ... Stopper 5 ... Rope coupling ring, rope ... Locking member 7 ... Pivot shaft, 8 ... Sliding shaft 9 …… Operating plate, 10 …… Groove 11 …… Sliding cylinder, 12 …… Sliding shaft cylinder 13 …… Pin cylinder, 14 …… Safety pin 15 …… Rope insertion part

Claims (3)

[Scope of utility model registration request] 1. A rope insertion holder 1 and a locking member 6 provided with a stop claw 4 at one end and a rope coupling ring 5 at the other end, and a pivot shaft 7 is fitted and hinged on one side. In a fall prevention safety device in which a rope insertion portion 15 can be opened and closed by an opening / closing member 3 which is provided so that a sliding shaft 8 urged by a spring on the other side can be fitted into and disengaged from the pivot shaft 7 or engaged with the pivot shaft 7. When the stop claw 4 is located above the pivot shaft 7, the safety pin 14 protrudes, so that the sliding shaft 8
A safety device for lifting / lowering movement, characterized in that it prevents fitting of the pivoting shaft 7 to the pivot shaft 7. 2. A safety pin 14 is characterized in that a pin cylinder 13 is provided between a sliding shaft 8 and a pivoting shaft 7 which rotates, and is fitted in the pin cylinder 13 so as to be freely inserted and removed. The safety device for lifting / lowering movement according to claim 1 of the utility model registration claim. 3. A safety device for lifting / lowering movement according to claim 1, wherein the safety pin 14 is fitted in the shaft core of the sliding shaft 8 so as to be able to move in and out.