JPS645947Y2 - - Google Patents

Description

[Detailed description of the invention] <Industrial application field> The present invention is a drum pawl used to prevent unexpected rolling of a drum for winding electric wires, cables, etc. This invention relates to a drum pawl that can be hung on a drum.

<Technical Background> In general, this type of winding drum is small, about 40 cm in diameter, and larger drums, which are much larger than the height of an adult, are used.

By the way, when such drums are transported or stored, a brake is applied to the drum's collar to prevent it from accidentally rolling.However, when the worker does this work, the worker may be in an unstable position, such as leaning on the drum. If you do this in a bad position, it is dangerous, for example, if the drum rolls inadvertently and you are unable to escape, it may lead to a serious accident that could even be life-threatening to the worker.

<Purpose of the invention> The present invention was made in view of the above-mentioned problems, and the purpose of this invention is to provide a drum pawl that can pawl the drum while maintaining the most stable standing position. For this purpose, the outer cylinder and the inner cylinder of the drum pawl are slidably fitted together,
One end of the tension spring loaded inside the outer cylinder is hooked to one end of the outer cylinder, and the other end of the tension spring is attached to the inner cylinder so that it is always biased to draw the inner cylinder into the outer cylinder. A drum pawl means has pawls fixed to both ends of a connecting rod that is hooked to the fitting end of the cylinder, and an inner drum pawl means that is connected by a pin to a handle that is supported by a shaft on the top of the vertical cylinder that is erected on the external cylinder. It is constituted by a pawl interval adjustment mechanism in which the lower end of the cylinder fixing rod is removably engaged with a plurality of positioning holes provided in the inner cylinder through a through hole provided in the outer cylinder.

<Structure and operation of the invention> Hereinafter, embodiments of the drum pawl according to the invention will be described in detail based on the drawings.

1 to 4, this drum pawl 1 comprises a drum pawl means 2 and a pawl spacing adjustment mechanism 3. As shown in FIGS. The drum pawl means 2 consists of a double cylindrical connecting rod 4 and a pair of metal pawls 5, 5 having chevron-shaped cross sections at both ends of the connecting rod 4. The connecting rod 4 has an outer cylinder 6 and an inner cylinder 7 that are slidably fitted together in a telescopic manner, and a tension spring 8 is loaded into the outer cylinder 6. By hooking the proximal end of the outer tube 6 and hooking the other end to the tip (fitting side end) of the inner tube 7, the inner tube 7 is biased in a direction to be drawn into the outer tube 6.

The pawl spacing adjustment mechanism 3 includes a vertical cylinder 9, a handle 10, and an inner cylinder fixing rod 11, which are provided upright at the tip of the outer cylinder 6.
Equipped with The handle 10 consists of a grip 12 fixed to the upper part of the vertical cylinder 9, and an operating piece 14 rotatably supported on the upper part of the vertical cylinder 9 by a support shaft 13. The inner cylinder fixing rod 11 is connected to the working end of the working piece 14 via a pin 15, and its lower end faces a through hole 16 formed in the upper surface of the outer cylinder 6.
It is biased in the engagement direction by a coil spring S wound around. A plurality of positioning holes 17 are formed through the upper surface of the inner cylinder 7 at predetermined intervals on the same line as the through holes 16 of the outer cylinder 6, and the lower end of the inner cylinder fixing rod 11 passes through the through holes 16. and is removably engaged with the positioning hole 17. It is used to prevent rolling of the drum 2 for winding electric wires, cables, etc.

Next, to explain how to use the above configuration, first, the inner tube 7 is moved against the outer tube 6 by resisting the spring force of the tension spring 8.
Pull it out from the drum, widen the gap between the pawls 5, 5, hold the handle 10, insert it under the collar 19 of the drum 18, and operate the handle to remove the inner cylinder fixing rod 1.
1 is pulled up once to release the engagement between the lower end of the fixed rod 11 and the positioning hole 17 and the through hole 16, the inner cylinder 7 is urged by the tension spring 8 and pulled into the outer cylinder 6. This causes pawls 5,5
By narrowing the interval according to the diameter of the flange 19 of the drum 18 and bringing the inward side surface of each pawl 5 into contact with the flange 19, the drum 18 is reliably prevented from rolling.

<Effects of the invention> As described above, according to the invention, the outer cylinder and the inner cylinder of the drum pawl are slidably fitted to each other, and one end of the tension spring loaded inside the outer cylinder is connected to the outer cylinder. The connecting rod is attached to both ends of the connecting rod, which is attached to one end of the tube, and the other end of the tension spring is attached to the insertion end of the inner tube so that the other end of the tension spring is always biased to draw the inner tube into the outer tube. drum pawl means having a pawl fixed thereto;
The lower end of the inner cylinder fixing rod, which is connected with a pin to a handle supported by a shaft on the upper part of the vertical cylinder installed upright on the outer cylinder, can be removed through a through hole provided in the outer cylinder and into multiple positioning holes provided in the inner cylinder. Since the pawl interval adjustment mechanism is engaged with the drum, there is no need to hold back when pawling the drum, and it is possible to do it in a stable standing position, which is very safe. Furthermore, since the spacing between the pawls can be adapted to the size of the drum, the pawls can be reliably applied, which has great practical advantages.

[Brief explanation of the drawing]

The drawings show an embodiment of the present invention; FIG. 1 is a partially cutaway front view, FIG. 2 is a plan view, FIG. 3 is a partially cutaway side view, and FIG. 4 is a perspective view showing the state of use. be. 2 is a drum pawl means, 3 is a pawl spacing adjustment mechanism, 4 is a connecting rod, 5 is a pawl, 6 is an outer cylinder, 7 is an inner cylinder, 8 is a tension spring, 9 is a vertical cylinder, 10 is a handle, 11 is a Inner cylinder fixing rod, 13 is a support shaft, 15 is a pin, 16 is a through hole, and 17 is a positioning hole.

Claims (1)

[Scope of utility model registration request] The outer cylinder and the inner cylinder are slidably fitted into each other, one end of a tension spring loaded inside the outer cylinder is hooked to one end of the outer cylinder, and the other end of the tension spring is attached to the inner cylinder. drum pawl means having pawls fixed to both ends of a connecting rod which is latched to the insertion side end of the inner cylinder so as to be always urged to be drawn into the outer cylinder;
The lower end of the inner cylinder fixing rod, which is connected with a pin to a handle supported by a shaft on the upper part of the vertical cylinder installed upright on the outer cylinder, can be removed through a through hole provided in the outer cylinder and into multiple positioning holes provided in the inner cylinder. A pawl for a drum characterized by comprising a pawl interval adjustment mechanism that engages with the pawl.