CN202788387U

CN202788387U - Pulley device of sliding door

Info

Publication number: CN202788387U
Application number: CN 201220538691
Authority: CN
Inventors: 胡旭辉
Original assignee: NINGBO SUNTHAI BEARING CO Ltd
Current assignee: NINGBO SUNTHAI BEARING CO Ltd
Priority date: 2012-10-11
Filing date: 2012-10-11
Publication date: 2013-03-13
Anticipated expiration: 2022-10-11

Abstract

The utility model relates to a pulley device of a sliding door, which is fixed on the bottom of the sliding door and can be movably arranged on a guide rail (1) matched with the sliding door. The pulley device is characterized by comprising rolling bearings (2) and a sliding bracket (3), wherein the rolling bearings (2) are respectively arranged on the left side and the right side of the sliding bracket (3) and are symmetrically assembled together through fixed shafts (4), the middle part of the sliding bracket (3) is fixed to the bottom of the sliding door through a fixing device, limit columns (5) adapted to a limit groove (11) in the guide rail (1) are convexly and downwards arranged at the bottom of the sliding bracket (3), and positioning bearings (6) capable of horizontally rotating are arranged on the top surface of the sliding bracket (3). The pulley device is reasonable in structure, is suitable for a heavy load sliding door and capable of freely rotating, thereby realizing rotation of the sliding door.

Description

A kind of pulley gear of sliding door

Technical field

The utility model relates to a kind of pulley gear of sliding door, especially refers to a kind of pulley gear for the industrial sliding door of heavy duty.

Background technology

Industrial door is enterprise's facility commonly used, is applicable to public place or the dwelling houses such as the commercial shop front, garage, market, hospital, industrial enterprise.Especially door opening is larger, and convenient, fast unlatching effect is played in the place of inconvenient installation ground door body; Industrial door can be divided into: the kinds such as industrial roller shutter door, industrial slide lifting door, manual/electric translation door, quick rolling-door.Wherein industrial sliding door is used very extensive, but because large, the quality of industrial sliding door volume is heavy, phenomenon stuck or that damage usually occurs in the pulley gear of prior art, and the sliding door of prior art can only traveling priority, thereby cause the open spaces of door less, so its structure is further improved.

The utility model content

Technical problem to be solved in the utility model is to provide a kind of to design ingenious, rational in infrastructure and can be applicable to the pulley gear of heavily loaded sliding door for above-mentioned prior art problem.

The utility model solves the problems of the technologies described above the technical scheme that adopts: the pulley gear of this sliding door, described pulley gear is fixed in the bottom of sliding door, and can place actively on the suitable guide rail, it is characterized in that: described pulley gear includes rolling bearing and sliding support, described rolling bearing is distributed in respectively on the right and left of sliding support, and the corresponding rolling bearing that is positioned at the right and left by fixed axis for being set together symmetrically, the middle part of described sliding support is fixed together by the bottom of fastening devices and described sliding door, the bottom of described sliding support convex with downwards with guide rail in the suitable limited post of stopper slot, be provided with the location bearing that can horizontally rotate at the end face of described sliding support.

As improvement, described rolling bearing is full pearl bearing.

As improvement, the number that described rolling bearing is positioned on the sliding support is 4, every limit is 2, two rolling bearings on every limit are in tandem and are located along the same line, and are positioned at two corresponding rolling bearings of the left and right sides and are arranged at respectively on the two ends of being fixed in the fixed axis on the sliding support.

As improvement, described location bearing is 2, is individually fixed on the end face of sliding support of fastening devices front and back position.

As improvement, described fastening devices includes bolt, and the upper end of described bolt is connected with the bottom of sliding door, and the lower end of described bolt is connected with sliding support.

As improvement, the structure that the bottom of described bolt is connected with sliding support is, the cavity that sliding support is passed in the lower end of described bolt is connected with plain thrust bearing, and the end face of described plain thrust bearing is sphere, and described cavity is shaped as the large taper seat of the little bottom opening of upper opening; The end face of described plain thrust bearing and taper seat can movably contact.

As improvement, described guide rail is wrapped in pulley gear wherein, and described location bearing and fastening devices protrude upward from the chute at described guide rail top.

Compared with prior art, the utility model adopts described pulley gear to include rolling bearing and sliding support, described rolling bearing is distributed in respectively on the right and left of sliding support, and the corresponding rolling bearing that is positioned at the right and left by fixed axis for being set together symmetrically, the middle part of described sliding support is fixed together by the bottom of fastening devices and described sliding door, the bottom of described sliding support convex with downwards with guide rail in the suitable limited post of stopper slot, be provided with the location bearing that can horizontally rotate at the end face of described sliding support.Advantage of the present utility model is: described pulley gear both sides are provided with rolling bearing, not only can make this pulley gear bear larger load, and the stressed of pulley gear become evenly, thus the life-span of improving pulley gear; Also have, the lower end of the bolt of described fastening devices arranges plain thrust bearing, and the end face of described plain thrust bearing is sphere, and the taper seat of the cavity of described sphere and sliding support movably contacts, therefore this pulley gear can level rotate freely, thereby realizes the rotation of sliding door.

Description of drawings

Fig. 1 is that pulley gear of the present utility model places the structural perspective on the guide rail;

Fig. 2 is the top view of Fig. 1;

Fig. 3 is along the sectional view of A-A line among Fig. 2;

Fig. 4 is the structural perspective of Fig. 1 middle pulley device;

Fig. 5 is the structural perspective at another visual angle of Fig. 1 middle pulley device;

Fig. 6 is the front projection figure of Fig. 4;

Fig. 7 is the side projection figure of Fig. 4;

Fig. 8 is the top view of Fig. 4.

The specific embodiment

Embodiment is described in further detail the utility model below in conjunction with accompanying drawing.

Extremely shown in Figure 8 such as Fig. 1, the pulley gear of the sliding door of present embodiment, described pulley gear is fixed in the bottom of sliding door, and can place actively on the suitable guide rail 1, described pulley gear includes rolling bearing 2 and sliding support 3, and described rolling bearing 2 is full pearl bearing; The number that described rolling bearing 2 is positioned on the sliding support 3 is 4, every limit is 2, two rolling bearings 2 on every limit are in tandem and be located along the same line, and are positioned at two corresponding rolling bearings 2 of the left and right sides and are arranged at respectively on the two ends of being fixed in the fixed axis 4 on the sliding support 3; The middle part of described sliding support 3 is fixed together by the bottom of fastening devices and described sliding door, described fastening devices includes bolt 7, the upper end of described bolt 7 is connected with the bottom of sliding door, the cavity that sliding support 3 is passed in the lower end of described bolt 7 is connected with plain thrust bearing 8, the end face of described plain thrust bearing 8 is sphere 81, and described cavity is shaped as the large taper seat of the little bottom opening of upper opening; The end face of described plain thrust bearing 8 and taper seat can movably contact; The bottom of described sliding support 3 convex with downwards with guide rail 1 in the suitable limited post 5 of stopper slot 11, end face at described sliding support 3 is provided with the location bearing 6 that can horizontally rotate, described location bearing 6 is 2, is individually fixed on the end face of sliding support 3 of fastening devices front and back position; Described guide rail 1 is wrapped in pulley gear wherein, and described location bearing 6 and fastening devices protrude upward from the chute 12 at described guide rail 1 top.

Claims

1. the pulley gear of a sliding door, described pulley gear is fixed in the bottom of sliding door, and can place actively on the suitable guide rail (1), it is characterized in that: described pulley gear includes rolling bearing (2) and sliding support (3), described rolling bearing (2) is distributed in respectively on the right and left of sliding support (3), and the corresponding rolling bearing (2) that is positioned at the right and left by fixed axis (4) for being set together symmetrically, the middle part of described sliding support (3) is fixed together by the bottom of fastening devices and described sliding door, the bottom of described sliding support (3) convex with downwards with guide rail (1) in the suitable limited post (5) of stopper slot (11), be provided with the location bearing (6) that can horizontally rotate at the end face of described sliding support (3).

2. pulley gear according to claim 1 is characterized in that: described rolling bearing (2) is full pearl bearing.

3. pulley gear according to claim 2, it is characterized in that: the number that described rolling bearing (2) is positioned on the sliding support (3) is 4, every limit is 2, two rolling bearings (2) on every limit are in tandem and being located along the same line, and are positioned at corresponding two rolling bearings (2) in the left and right sides and are arranged at respectively on the two ends of being fixed in the fixed axis (4) on the sliding support (3).

4. pulley gear according to claim 3, it is characterized in that: described location bearing (6) is 2, is individually fixed on the end face of sliding support (3) of fastening devices front and back position.

5. arbitrary described pulley gear in 4 according to claim 1, it is characterized in that: described fastening devices includes bolt (7), the upper end of described bolt (7) is connected with the bottom of sliding door, and the lower end of described bolt (7) is connected with sliding support (3).

6. pulley gear according to claim 5, it is characterized in that: the bottom of described bolt (7) with the structure that sliding support (3) is connected is, the cavity that sliding support (3) is passed in the lower end of described bolt (7) is connected with plain thrust bearing (8), the end face of described plain thrust bearing (8) is sphere (81), and described cavity is shaped as the large taper seat of the little bottom opening of upper opening; End face and the taper seat of described plain thrust bearing (8) can movably contact.

7. arbitrary described pulley gear in 4 according to claim 1, it is characterized in that: described guide rail (1) is wrapped in pulley gear wherein, and described location bearing (6) and fastening devices protrude upward from the chute (12) at described guide rail (1) top.