CN201225372Y

CN201225372Y - Roller type backstop

Info

Publication number: CN201225372Y
Application number: CNU2008200409691U
Authority: CN
Inventors: 黄留生; 赵万福
Original assignee: Jiangsu Tailong Decelerator Machinery Co Ltd
Current assignee: Jiangsu Tailong Decelerator Machinery Co Ltd
Priority date: 2008-07-14
Filing date: 2008-07-14
Publication date: 2009-04-22
Anticipated expiration: 2018-07-14

Abstract

The utility model relates to a pin roller type holdback which is mainly used for various horizontal type reducing gears like an external dead axle gear, an electric roller, and the like. The pin roller type holdback comprises an outer ring connected with one end of a shell, a 7-shaped groove embedded on the external circumference of a star wheel, and three pin rollers and an ejector pin in a pin groove. The pin roller type holdback acts on the pin rollers and causes the pin rollers to frictionize with the outer ring and the star wheel to generate resistance, thus the holdback effect is realized. The holdback has little wear and tear, no heat generation, low noise, balanced stress, good holdback effect, long service life, convenient disassembly and assembly and easy maintenance and can satisfy the demand of clockwise and anticlockwise rotating directions.

Description

Roller type brake

Technical field

The utility model relates to a kind of roller type brake, is applicable to that all kinds of driving mechanisms need the occasion of check, are specially adapted to the check needs of external fixed axis gear, cycloidal-pin wheel, star-wheel gear and motorized pulleys.

Background technique

For guarantee shutting down or equipment and people's safety when meeting unexpected power outage, require to install the more and more general of non-return device on the running parts, the check kind is also more and more.Common the belt non-return device arranged, carve piece formula check bearing, the click non-return device of band tension and compression spring etc., in one long period, played their due effects aborning really.Not enough is, and these non-return devices all exist quick abrasion to some extent, the life-span is short, cost is high, assembling is complicated, keep in repair extremely problem such as inconvenience.

Summary of the invention

The utility model purpose is to overcome the deficiency in the prior art, provide that a kind of check is effective, little, the easy accessibility of wearing and tearing, maintenance less, cost is low, is applicable to the roller type brake that suitable, counterclockwise rotation direction needs.

The utility model purpose is achieved in that a kind of roller type brake comprises housing, input shaft, end cap, and to be outer shroud and end cap through bolt combine as a whole technical characterstic is fixed in housing one end and constitutes fixing-assembly, and outer shroud is located by setting sleeve; Star-wheel is socketed on the input shaft, is interval with many group converse stopping mechanisms on the star-wheel cylindrical circumference.

Described setting sleeve is stepped shape, small stair cylindrical circumference and outer shroud endoporus transition fit, and big step cylindrical circumference and housing endoporus transition fit realize the radial and axial location of outer shroud with respect to housing.

Described converse stopping mechanism comprises roller and ejector pin, roller and ejector pin place respectively on the star-wheel cylindrical circumference in many " 7 " the font grooves and cotter way that is provided with at interval, " 7 " font groove links to each other with cotter way, be provided with spring in the ejector pin pin-and-hole, promote roller displacement and outer shroud and star-wheel friction at the stressed down ejector pin of spring and be non-return state.

The friction realization check of the roller of the utility model by converse stopping mechanism and outer shroud inwall, check speed is fast, and check is steady, and, low noise little with respect to its friction of traditional converse stopping mechanism, wearing and tearing are few, stress equalization, check is effective, long service life; Both outer shroud is carried out radial and axial location by setting sleeve, by setting sleeve and cooperating of bearing input shaft was played axially locating again, stable working, safe and reliable, improve the check ability, reduce manufacture cost, guaranteed the accurate location of mounting equipment with it; Outer shroud and end cap combine as a whole through bolt and are fixed in housing one end formation fixing-assembly, and compact structure connects firmly easy accessibility.

The utility model is simple in structure, the check sensitivity, reliable and stable, check is effective, be applicable to that power range is from 1.5KW-6P to 200KW-4P, to Φ 90mm, the mounting point is on the housing end face of input shaft end or input shaft tail end to equipped input shaft diameter, can adapt to check needs suitable, counterclockwise rotation direction from Φ 30mm.

Description of drawings

Fig. 1 is that the utility model is faced cross-sectional view;

Fig. 2 is the utility model side-looking cross-sectional view.

In shown in Fig. 1,2, housing 1, setting sleeve 2, input shaft 3, limited ring 4, star-wheel 5, outer shroud 6, roller 7, ejector pin 8, spring 9, end cap 10, bolt 11, " 7 " font groove 12, cotter way 13.

Embodiment

Below in conjunction with drawings and Examples the utility model is further described.

Among Fig. 1,2, housing 1 must be fixing earlier, because this is the basis that miscellaneous part is installed, outer shroud 6 and end cap 10 are fixed in after bolt 11 combines as a whole on the high speed end face of housing and constitute fixing-assembly; Setting sleeve 2 is stepped shape, its small stair cylindrical circumference and outer shroud 6 endoporus transition fit, big step cylindrical circumference and housing 1 endoporus transition fit, the setting sleeve end face cooperates with bearing face, realize the radial and axial location of outer shroud with respect to housing, and the axially locating of input shaft 3; Star-wheel 5 is socketed on the input shaft 3, fixes by flat key and nut, and star-wheel is rotated in the same way with input shaft; Be interval with many group " 7 " font grooves 12 and cotter way 13 on the cylindrical circumference of star-wheel, " 7 " font groove links to each other with cotter way, be provided with roller 7 in " 7 " font groove 12, be provided with ejector pin 8 in the cotter way 13, roller 7 axial two ends are provided with the limited ring 4 that is fixed on the star-wheel, limited ring axially locating roller, prevent that roller from scurrying out from " 7 " font groove, be provided with spring 9 in the ejector pin pin-and-hole, require the ejector pin can be capable of expansion and contraction in pin-and-hole during assembling, roller can go slick in " 7 " font groove, the stressed ejector pin down of spring promote roller in " 7 " font groove in displacement, with outer shroud and star-wheel friction, realize check.After the roller assembling moulding, must carry out running in, treat rotating speed reach normal after, non-return device planted agent low noise, do not have bump, stable drive.

When input shaft 3 turned round counterclockwise by Fig. 2, roller 7 was just to ejector pin 8 direction displacements, and very for a short time being bordering on of the frictional force of roller and outer shroud 6 and star-wheel 5 do not have friction, thereby input shaft is gone slick;

When input shaft 3 clockwise during running, roller 7 since the thrust that is subjected to ejector pin 8 to ejector pin negative side displacement, roller and outer shroud 6 and the very big frictional force of star-wheel 5 generations, thus make input shaft static, play non-return effect.

Claims

1, a kind of roller type brake comprises housing (1), input shaft (3), end cap (10), it is characterized in that: outer shroud (6) combines as a whole through bolt (11) with end cap (10) and is fixed in housing one end formation fixing-assembly, and outer shroud (6) is by setting sleeve (2) location; Star-wheel (5) is socketed on the input shaft (3), is interval with many group converse stopping mechanisms on the star-wheel cylindrical circumference.

2, roller type brake according to claim 1, it is characterized in that: described setting sleeve (2) is stepped shape, small stair cylindrical circumference and outer shroud (6) endoporus transition fit, big step cylindrical circumference and housing (1) endoporus transition fit realize the radial and axial location of outer shroud with respect to housing.

3, roller type brake according to claim 1, it is characterized in that: described converse stopping mechanism comprises roller (7) and ejector pin (8), roller and ejector pin place respectively in many " 7 " the font grooves (12) and cotter way (13) that are provided with at interval on the star-wheel cylindrical circumference, " 7 " font groove links to each other with cotter way, be provided with spring (9) in ejector pin (8) pin-and-hole, promote roller displacement and outer shroud and star-wheel friction at the stressed down ejector pin of spring and be non-return state.