CN108312779B

CN108312779B - Pulley for groove-shaped track

Info

Publication number: CN108312779B
Application number: CN201810077412.3A
Authority: CN
Inventors: 董育伟; 丁红燕; 董振邦; 丁秋冉; 高中元; 高蕊; 周斌; 董涛; 杨青松; 曲展舒
Original assignee: Huaiyin Institute of Technology
Current assignee: Huai'an Chuanghooye Technology Co.,Ltd.
Priority date: 2018-01-26
Filing date: 2018-01-26
Publication date: 2020-08-18
Anticipated expiration: 2038-01-26
Also published as: CN108312779A

Abstract

The invention discloses a pulley for a groove-shaped track, which consists of a bracket and rollers, wherein the bracket at two axial sides of each roller is respectively connected with a guide wheel, the guide wheels are axially vertical to the rollers, and a wheel rim protrudes out of the outer wall of the bracket. The guide wheel makes the pulley contact with the bottom and inside wall of the grooved track, and has small friction force, no gap, no sliding friction between the pulley and the track, and static friction force between the guide wheel and the inside wall of the track to counteract the side acting force to avoid the up and down shake of the pulley, ensure the smooth shift of the pulley in the grooved track, raise the stability of the article with the pulley and lower noise.

Description

Pulley for groove-shaped track

Technical Field

The invention relates to the technical field of pulleys, in particular to a pulley for a groove-shaped rail.

Background

The sliding friction between objects is converted into rolling friction by the pulleys, so that the resistance and the abrasion caused by friction force are effectively reduced, and the pulley has a plurality of applications in daily life of people; according to the applied environment difference, the form of pulley, the structure is various, wherein, the structure that is used for the cell type track is generally by the support of n font with connect in the gyro wheel of support and constitute, for preventing sliding friction between support and the track inside wall, the general way is to reduce the width of support, make it slightly be less than the track, make and leave the clearance between the two, this just leads to the pulley to have the space of moving about in the track, both the pulley and the track unilateral laminating sliding friction of appearing easily, increase resistance and wearing and tearing, make the article that adopt this pulley can produce when removing again and rock, it is unstable and the noise is big, for example: a glass sliding door.

Disclosure of Invention

The invention aims to provide a pulley for a groove-shaped track, which can solve the problems that the existing pulley has a space for moving left and right in the groove-shaped track, so that sliding friction is easy to occur, and an article adopting the pulley is easy to shake, unstable and loud in noise when moving.

The invention is realized by the following technical scheme:

the pulley for the groove-shaped track is composed of a support and rollers, guide wheels are connected to the supports on two sides of the roller in the axial direction respectively, the guide wheels are perpendicular to the roller in the axial direction, and a wheel rim protrudes out of the outer wall of the support.

The further scheme of the invention is that the brackets at two axial sides of the roller are respectively provided with a window, and the shaft of the guide wheel is vertically arranged in the window, so that the space is saved, and the miniaturization of the pulley is facilitated.

The invention further provides that at least two guide wheels are respectively connected to the supports at two sides of the roller in the axial direction to form a front pivot and a rear pivot, so that the pulley slides more stably in the track, and different friction moments can be applied when the pulley is subjected to a lateral acting force forwards or backwards along the track, so that the pulley is prevented from shaking up and down more effectively.

According to a still further scheme of the invention, two adjacent guide wheels on the bracket on each side of the roller in the axial direction are arranged in a vertically staggered manner, and/or two guide wheels at corresponding positions on the brackets on two sides of the roller in the axial direction are arranged in a vertically staggered manner; the guide wheels arranged in a staggered mode save more space, and the miniaturization of the pulleys is further facilitated.

Compared with the prior art, the invention has the advantages that:

the guide wheel makes the pulley contact with the bottom and inside wall of the grooved track, and has small friction force, no gap, no sliding friction between the pulley and the track, and static friction force between the guide wheel and the inside wall of the track to counteract the side acting force to avoid the up and down shake of the pulley, ensure the smooth shift of the pulley in the grooved track, raise the stability of the article with the pulley and lower noise.

Drawings

FIG. 1 is a schematic structural diagram of the present invention.

Detailed Description

The pulley for the groove-shaped track as shown in fig. 1 is composed of an n-shaped bracket 1 and a roller 2, wherein a wheel shaft is horizontally arranged between two vertical parts of the bracket 1, a vertical connecting shaft 6 is arranged in the middle of the top end of the n-shaped bracket 1, windows 5 are symmetrically arranged on the two vertical parts of the bracket 1 above the roller 2, two vertical shafts 4 are arranged in each window 5 side by side, a guide wheel 3 is rotatably connected onto each shaft 4, and the diameter of each guide wheel 3 is larger than the wall thickness of the vertical part of the bracket 1, so that a wheel rim protrudes out of the outer wall of the bracket 1; the two guide wheels 3 in each window 5 are staggered up and down, and the two guide wheels 15 at corresponding positions in the two windows 5 are also staggered up and down.

In this embodiment, the shaft 4 is mounted in a frame and then embedded in the window 5 along with the frame for ease of assembly.

This pulley is connected with the interference fit of cell type track inside wall, makes the cell type track inside wall produce certain pressure to leading wheel 3, and the frictional force that produces by this pressure is very little to the resistance that leading wheel 3 produced in the removal of rectilinear direction, but can prevent effectively that leading wheel 3 from deviating from rectilinear direction to ensure the steady removal of pulley.

Claims

1. The utility model provides a pulley for cell type track, comprises support (1) and gyro wheel (2), its characterized in that: the guide wheels (3) are respectively connected to the supports (1) on the two axial sides of the roller (2), the guide wheels (3) are axially vertical to the roller (2), and the wheel rim protrudes out of the outer wall of the supports (1); the support (1) on the two axial sides of the roller (2) is respectively connected with at least two guide wheels (3), the two adjacent guide wheels (3) on the support (1) on each axial side of the roller (2) are arranged in a vertically staggered manner, and/or the two guide wheels (15) on the corresponding positions on the support (1) on the two axial sides of the roller (2) are arranged in a vertically staggered manner; the brackets (1) on the two axial sides of the roller (2) are respectively provided with a window (5), and the shaft (4) of the guide wheel (3) is vertically arranged in the window (5); the pulleys are connected with the inner side wall of the groove-shaped track in an interference fit mode, so that the inner side wall of the groove-shaped track generates pressure on the guide wheel (3).