CN201330071Y

CN201330071Y - A brake for externally mounted electric roller

Info

Publication number: CN201330071Y
Application number: CNU2009200785285U
Authority: CN
Inventors: 常新志
Original assignee: SICHUAN ZIGONG TRANSPORTATION MACHINERY CO Ltd
Current assignee: Sichuan Zigong Conveying Machine Group Co., Ltd.
Priority date: 2009-01-07
Filing date: 2009-01-07
Publication date: 2009-10-21
Anticipated expiration: 2019-01-07

Abstract

The utility model discloses a brake for externally mounted electric roller, mainly comprising an outer ring, an inner ring, a spring, wedges and a retainer; the inner ring is placed in the outer ring; the retainer is arranged in the roller path formed between the inner ring and the outer ring; a certain number of wedges fixed by the wedge fixing axles are arranged on the circumference of the retainer at equal intervals; a spring for making the working surface of the wedge contact with the outer ring and the inner ring is also arranged on the wedge fixing axle, one end of the spring being fixed on the wedge and the other end being clamped on the spring pin arranged on the retainer; the outer ring is fixed on the bearing seat at one end of the electric roller; the inner ring is arranged on the input shaft. The utility model is mounted on the outer end of the externally mounted electric roller input shaft bearing seat, being capable of directly locking the input shaft and preventing reversion of the roller and the belt-type conveyor during shut-down; the brake can bear a large torque with no wear, having high reliability.

Description

Fitted outside motorized pulleys holdback

Technical field

The utility model belongs to technical field of conveying machinery, specifically relates to a kind of fitted outside motorized pulleys bearing of input shaft seat outer end that is installed in, and prevents the fitted outside motorized pulleys holdback that cylinder takes a turn for the worse when belt conveyer stops.

Background technology

At present, the supporting belt holdback that used is realized one-way brake on the input shaft of the driving drum of belt conveyer, prevents that cylinder from taking a turn for the worse when belt conveyer stops, assurance equipment and personnel's safety.It is very little that this holdback bears check moment, do not satisfy high-power cylinder requirement, and reliability is very low.

The utility model content

The purpose of this utility model is to address the above problem, a kind of outer end that is installed in fitted outside motorized pulleys bearing of input shaft seat is provided, direct locked input shaft when stopping, it is big that it bears moment of torsion, almost not wearing and tearing have the very fitted outside motorized pulleys holdback of high reliability.

For achieving the above object, the technical scheme that is adopted is: a kind of fitted outside motorized pulleys holdback, mainly by the outer ring, inner ring, spring, voussoir and retainer connect and compose, described inner ring places the inside of outer ring, retainer is arranged in the raceway that forms between outer ring and the inner ring, be provided with to the circumference equal intervals of wherein said retainer some by the fixing voussoir of voussoir anchor shaft, also be provided with the spring that the driving surface that makes voussoir and outer ring contact with inner ring on the voussoir anchor shaft, one end of spring is fixed on the voussoir, the other end is connected on the spring pin that is arranged on the retainer, described outer ring is fixed on the bearing seat of motorized pulleys one end, and inner ring is sleeved on the input shaft.The mass center of described voussoir departs from its voussoir anchor shaft---and promptly depart from its center of gyration, during the input shaft high speed rotating, deflect and outer ring and inner ring disengage, avoid friction and wear to take place at the centrifugal action lower wedge block; Input shaft stops operating, and voussoir resets under action of the spring and contacts outer ring and inner ring realization one-way brake.Described fitted outside motorized pulleys also are provided with the outer end of holdback and prevent that the dust dirt from entering end cap and the seal ring in the holdback.

In sum, the utility model is installed in the outer end of fitted outside motorized pulleys bearing of input shaft seat, direct locked input shaft when stopping, by its one-way brake performance, prevent that cylinder from taking a turn for the worse when belt conveyer stops, it is big that this holdback bears moment of torsion, and almost not wearing and tearing, has very high reliability.

Description of drawings

Fig. 1 is the structural representation of the utility model installation position;

Fig. 2 is an A-A part sectional structure scheme drawing among Fig. 1---be the utility model sectional structure chart;

Wherein: 1-outer ring, 2-spring, 3-voussoir, 4-retainer, 5-inner ring, 6-seal ring, 7-end cap, 8-input shaft, 9-spring pin, 10-voussoir anchor shaft.

The specific embodiment

Below in conjunction with accompanying drawing the utility model is described in further detail:

As Fig. 1, shown in 2, a kind of fitted outside motorized pulleys holdback, mainly by outer ring 1, inner ring 5, spring 2, voussoir 3 and retainer 4 connect and compose, described inner ring 5 places the inside of outer ring 1, retainer 4 is arranged in the raceway that forms between outer ring 1 and the inner ring 5, be provided with to the circumference equal intervals of wherein said retainer 4 some voussoirs of fixing by voussoir anchor shaft 10 3, also be provided with the spring 2 that the driving surface that makes voussoir 3 and outer ring 1 contact with inner ring 5 on the voussoir anchor shaft 10, one end of spring 2 is fixed on the voussoir 3, the other end is connected on the spring pin 9 that is arranged on the retainer 4, described outer ring 1 is fixed on the bearing seat of motorized pulleys one end, and inner ring 5 is sleeved on the input shaft 8.The mass center of described voussoir 3 departs from its voussoir anchor shaft 10.Described fitted outside motorized pulleys also are provided with the outer end of holdback and prevent that the dust dirt from entering end cap 7 and the seal ring 6 in the holdback.

Claims

1, a kind of fitted outside motorized pulleys holdback, it is characterized in that: mainly by outer ring (1), inner ring (5), spring (2), voussoir (3) and retainer (4) connect and compose, described inner ring (5) places the inside of outer ring (1), retainer (4) is arranged in the raceway that forms between outer ring (1) and the inner ring (5), be provided with to the circumference equal intervals of wherein said retainer (4) some by the fixing voussoir (3) of voussoir anchor shaft (10), also be provided with the spring (2) that the driving surface that makes voussoir (3) and outer ring (1) contact with inner ring (5) on the voussoir anchor shaft (10), one end of spring (2) is fixed on the voussoir (3), and the other end is connected on the spring pin (9) that is arranged on the retainer (4).

2, fitted outside motorized pulleys holdback according to claim 1 is characterized in that: the mass center of described voussoir (3) departs from its voussoir anchor shaft (10).

3, fitted outside motorized pulleys holdback according to claim 1 is characterized in that: described fitted outside motorized pulleys also are provided with the outer end of holdback and prevent that the dust dirt from entering end cap (7) and the seal ring (6) in the holdback.