CN201450277U - Low friction cable laying pulleys - Google Patents

Abstract

The utility model relates to a low-friction cable laying pulley tool, in particular to a cable laying tool. It includes a pulley body and a bearing, and is characterized in that the inside of the pulley body is a hollow tubular inner cavity, and a bearing is respectively installed at both ends of the inner cavity of the pulley body, and the pulley body can roll with the bearing as a central axis. The middle part of the pulley body is inwardly recessed into an arc shape. The utility model can greatly reduce the friction force, so that the friction coefficient can basically reach the theoretical value, thereby protecting the cable more effectively, and can also reduce the power of the laying external force, so that the laying external force borne by the cable is reduced and the probability of damage is reduced. Improve construction quality.

Description

Low friction cable laying pulleys

technical field

The utility model relates to a low-friction cable laying pulley tool, in particular to a cable laying tool.

Background technique

Cable routing is the process of placing cables along a defined path. In this process, in order to improve the power efficiency of the cable laying process, rolling friction should be used instead of sliding friction as much as possible. During this process, pulleys are one of the most commonly used tools. At present, the commonly used pulleys are generally put directly on the steel pipe. During operation, there is still sliding friction between the inner wall and the steel pipe. When laying in parallel, the friction coefficient is 0.4 to 0.5. When the pulley is used at the cable bend, due to the side pressure, The coefficient of friction will be higher, and it is difficult to reach the theoretical value of 0.2.

Contents of the invention

The purpose of the utility model is to overcome the deficiencies in the prior art, and provide a low-friction cable laying pulley, which can reduce the drag resistance of the cable.

According to the technical solution provided by the utility model, a low-friction cable laying pulley includes a pulley body and a bearing, and is characterized in that: the inside of the pulley body is a hollow tubular inner cavity, and a bearing is respectively installed at both ends of the inner cavity of the pulley, The pulley body can roll on a bearing as a central axis.

The middle part of the pulley body is inwardly recessed into an arc shape.

Compared with the prior art, the utility model has the following advantages: the utility model can greatly reduce the friction force, so that the friction coefficient basically reaches the theoretical value, thereby protecting the cable more effectively, and can also reduce the power of laying external forces, so that The laying external force borne by the cable is reduced, thereby reducing the probability of damage and improving the construction quality.

Description of drawings

Fig. 1 is a sectional view of the utility model.

Detailed ways

Below in conjunction with specific accompanying drawing and embodiment the utility model is further described.

As shown in the figure: the low-friction cable laying pulley includes pulley body 1, bearing 2, etc.

The inside of the pulley body 1 is a hollow tubular inner cavity, and a bearing 2 is respectively installed at both ends of the inner cavity of the pulley body 1, and the middle part of the pulley body 1 is sunken inward into an arc shape; the pulley body 1 can be centered on the bearing 2 axis scrolling.

When in use, a tube shaft is passed through the bearing 2, and the tube shaft is simply fixed and placed in multiple groups. The cable is placed on the pulley body 1, the cable can be easily dragged, and the cable is guaranteed not to be scratched.

Claims (2)

1. A low-friction cable laying pulley, comprising a pulley body (1) and a bearing (2), is characterized in that: the inside of the pulley body (1) is a hollow tubular inner cavity, and the inner cavity of the pulley body (1) A bearing (2) is respectively installed at both ends, and the pulley body (1) can roll with the bearing (2) as the central axis. 2. The low-friction cable laying pulley according to claim 1, characterized in that: the middle part of the pulley body (1) is inwardly recessed into an arc shape.