JPH06270723A - Drum supporting device - Google Patents

Abstract

PURPOSE:To make it possible for a drum supporting device to continuously apply stable braking to a rotating drum when a line is extended. CONSTITUTION:A drum shaft 1 is allowed to pierce through the center hole of a drum D with a fixed retainer 2 inserted into its one end and a screw sleeve 4 inserted through its other end, both fixed to the drum shaft 1. By the tightening of a screw retainer 7 screwed on the screw sleeve 4, the drum D and the drum shaft 1 is integraded into one unit. Brake wheels 6, 8 are welded on the outer edge of the screw sleeve 4 and the drum shaft 1. A pair of box type frame 9 are fixed to a stand 10. A symmetrical pair of rollers are provided diagonally downward of the frame 9 and brake wheels 6, 8 are placed on the rollers. The bent portion of a doglegged lever axially supports the frame 9 and a shoe on the upper end of the lever is made possible to press it down to the lower surface of the brake wheels 6, 8 by using a spring.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a wire supporting drum supporting device for supporting a winding drum of electric wires and trolley wires.

[0002]

2. Description of the Related Art Japanese Utility Model Laid-Open No. 53-17774 is known as a supporting device capable of preventing a flow when an electric wire is sent from a drum. A brake drum 6 that rotates integrally with the electric wire drum 4 is provided at the end of the shaft rod 3, the brake rope 23 is wound around the brake drum 6, and the brake drum is braked by the tension of the foot brake 18. However, it is difficult to finely adjust the braking with the brake rope, and it suddenly stops or starts to rotate suddenly, and thus it is necessary to continuously adjust with the foot brake. Rupture of the rope due to frictional contact cannot be avoided. In addition, the operation is not always smooth because there is a gap between the electric wire drum and the shaft rod.

[0003]

[Means for solving the problem] By providing brake wheels at both ends of the drum shaft,
The structure is such that this is pushed up by the lower brake shoe to brake. Since the drum is integrated with the drum shaft, it is tightened with a pair of retainers, and the gap between the drum and the drum shaft is also filled at that time. In order to facilitate the mounting of the drum shaft, a pair of rollers are provided at the lower left and right inclined positions of the brake wheel, and the brake wheel is placed on both rollers.

[0004]

DESCRIPTION OF THE PREFERRED EMBODIMENTS The drawings will be described. The drum shaft 1 is loosely inserted into the center hole of the bobbin-shaped electric wire drum D. The shaft has a large diameter portion and a small diameter portion. The fixed retainer 2 is a cylindrical body that can be inserted into the large-diameter portion of the drum shaft 1, and has a flange that can contact the side surface of the drum in the center, and a projecting circle that can be inserted into the gap between the drum and the drum shaft on one side thereof. A locking portion that can be inserted into the drum shaft with the bolt 3 is located on the other side. The screw sleeve 4 is a cylindrical body that can be inserted into the small diameter portion of the drum shaft 1, the center is a locking portion that can be inserted into the drum shaft 1 with a bolt 5, and the inside thereof is a screw portion with a screw cut on the outer diameter. . Brake wheels 6 are welded to the outside thereof. Like the fixed retainer, the screw retainer 7 has a collar and a projecting circle, and is screwed to the screw sleeve through the central screw hole. The brake wheel 8 is welded to the end of the large diameter portion of the drum shaft 1 so as to correspond to the brake wheel 6.

The frame 9 is a box-shaped body whose upper surface is open, and a pair of the frame 9 are fixed to the frame 10 so as to face each other. Laura 1
Reference numeral 1 is rotatably supported by a frame diagonally symmetrically downward with respect to a drum shaft. The roller 11 supports the brake wheel and is provided with side edges as shown in FIG. 3 in order to prevent the wheel from coming off. The brake lever 12 is supported on the frame by a shaft 13 at a central bent portion, and has a brake shoe 14 at its upper end that is capable of abutting directly below the brake wheel. The lower end is connected to a spring device having a spring 15 so that the brake shoe 13 can be pressed against the brake wheel.

[0006]

In this device, first the fixed retainer 2 is fixed to the drum shaft 1.
Then, the brake wheel 8 is fixed, and this is inserted into the center hole of the drum D. The screw sleeve 4 is inserted into the other end. Then, tighten the screw retainer to integrate the drum and drum shaft. Suspend this and set both brake wheels 6 and 8 on the roller 1 respectively.
Place it on 1. Adjust the spring 15 and brake shoe 1
Press the brake wheel at 4. Since the drum D is heavy, there is no danger of lifting it by pushing up the brake shoes,
If there is a concern that the brake wheel will be removed, it is sufficient to hand over the retaining metal fitting 16 to the upper cutout portion of the frame in the vicinity of the brake wheel.

[0007]

[Effect] Unlike braking by rope, stable braking can be maintained. The rubbed brake shoes are easy to replace. Since it is previously tightened with both retainers and is hung on the rollers, setup is easy.

[Brief description of drawings]

FIG. 1 is a front view of the present invention.

FIG. 2 is a side view of the present invention.

FIG. 3 is an explanatory diagram of a roller.

[Explanation of symbols]

 D Electric wire drum 1 Drum shaft 2 Fixed retainer 3 Bolt 4 Screw sleeve 5 Bolt 6 Brake ring 7 Threaded retainer 8 Brake ring 9 Frame 10 Frame 11 Roller 12 Brake lever 13 Shaft 14 Brake shoe 15 Spring 16 Detaching metal fitting

Claims (1)

[Claims] 1. A drum which is inserted into one side of a drum shaft and has a drum shaft that can be loosely inserted into the center hole of the drum, a projecting circle that can be inserted between the drum center hole and the drum shaft, and a contact flange that contacts the side surface of the drum. There is a fixed retainer that is locked to the shaft, a screw sleeve that is inserted into the other side of the drum shaft and that can be locked to the drum shaft at the center and has a screw thread on the inner circumference, and a screw hole that can be screwed into the screw sleeve. A threaded retainer having a projecting circle that can be inserted into the bored drum center hole and a flange that abuts against the other side of the drum, and is fixed to the outer end of the screw sleeve and the end opposite to the drum shaft, respectively.
A pair of brake wheels, a pair of box-shaped frames fixed to the pedestal so as to be opposed to each other and opened upward, rollers that are pivotally attached to the frame at diagonally lower left and right around the drum shaft to support the brake wheels, and an attached spring. An electric wire drum support device composed of a brake shoe capable of pushing up a brake wheel from below.