CN204213213U - Bearing type non-return device - Google Patents

Abstract

Involved by the utility model bearing type non-return device is non-return device for preventing transmission device from reversing in a kind of mechanical transmission; When non-return device runs well, inner ring 9 rotates, and baffle plate 10 drives retainer and roller 8 to operate in the same way simultaneously; When non-return device check, transmission shaft can drive inner ring 9 antiport, retainer 6 drive roller 8 under the pulling of extension spring 5 active force reverses, the ratchet surface compressing roller 8 of inner ring 9 causes maximum positive voltage power to outer ring 4 transmitting torque, retainer guarantees that the position of multiple roller 8 is identical, the reactive torque of outer ring 4 makes roller to get loose, and maximum friction appears in surface of contact, reaches check effect; The utility model provides a kind of uniform force, fast, the low wearing and tearing of check speed, low running resistance and long-life a kind of non-return device.

Description

Bearing type non-return device

technical field:

Involved by the utility model bearing type non-return device is non-return device for preventing this transmission device from reversing in a kind of mechanical transmission.

background technique:

The non-return device of current domestic common use, is mainly made up of outer ring, inner ring, voussoir, roller and the arm of force.What adopt is voussoir check, voussoir and inside and outside astragal press contacts, and when mechanical transmission rotates backward, voussoir direction changes, thus reaches check object; The non-return device of this kind of structure, has friction all the time with inside and outside circle when voussoir runs, forms larger running resistance, and contacts all the time at the same area, and permanent running is understood cause comparatively galling to this region, and its check performance is reduced.Therefore the non-return device used at present rotates voussoir for a long time and weares and teares excessive, and check angle diminishes, and non-return device is reduced working life, may cause serious accident in addition simultaneously; And the requirement on machining accuracy of voussoir is very high, be subject to mould, batch etc. impact, be comparatively difficult to ensure card conformity .

summary of the invention:

Now have problems to improve wedge block type non-return device, the utility model bearing type non-return device provides a kind of uniform force, fast, the low wearing and tearing of check speed, low running resistance and long-life a kind of non-return device.

The utility model bearing type non-return device is made up of the arm of force, bearing pin, side plate, outer ring, extension spring, retainer, bearing, roller, inner ring and baffle plate; Side plate in the arm of force and non-return device main body passes through pinned connection, side plate is connected with outer ring, extension spring one end is connected with inner ring, one end is connected with retainer, and retainer is installed in the space formed between outer ring and inner ring, and retainer is provided with block, bearing is installed on inner ring and side sheet room, inner ring has multiple check plane or class ratchet, roller is arranged between inner ring check plane and outer ring in dead slot, and inner ring is arranged on the shaft extension of transmission device; Multiple roller is evenly located by retainer, and the radial direction of strict restriction roller and axial activity space, coordinate inner ring to implement check; Block limits retainer axial position, and the retainer made can operate in the same way with outer ring and inner ring; Extension spring provides a warping force to make retainer drive roller to be adjacent to mutually to inner ring check plane wedging direction; Bearing ensures the precision forming uniform gap between inside and outside circle, reduces running resistance simultaneously, makes check effect better; The cavity of retainer design makes the contactless running of roller and outer ring, contacts and without relative movement with inner ring check plane.

When non-return device runs well, inner ring rotates, and baffle plate drives retainer and roller to operate in the same way simultaneously.

When non-return device check, transmission shaft can drive inner ring antiport, now retainer can reverse by drive roller under the pulling of extension spring active force, the check plane compressing roller of inner ring causes maximum positive voltage power to outer ring transmitting torque, retainer guarantees that the position of multiple roller is identical, by the reactive torque of inner ring, roller can not being got loose, there is maximum friction in surface of contact, reaches check effect.

The beneficial effect of the utility model bearing type non-return device is: eliminate the voussoir not easily processed, and the roller employing easily processing and measure, can ensure all roller size accurate correspondence.The surface contacted with roller generation check is outer ring arc face and inner ring check plane, the even bearing load of the whole body length of roller, check director space to diminish when making check multiple roller and outer ring and inner ring is locked reaches good check effect, and check power is larger, check effect is more firm; When check, the check position of roller is random, have the more long lifetime, and wedge block type is all the time only in same position, adds friction during normal operation, more easily occurs wearing and tearing; During the running of bearing type non-return device, roller and outer ring are thrown off, and to inner ring check plane without relatively rolling and friction, therefore there is no wearing and tearing to inner ring and outer ring; The extension spring group Main Function be installed on retainer makes roller keep check trend.And owing to being equipped with import high-precision bearing, make to form uniform gap between inside and outside circle, under the accurate location of retainer, each roller all can participate in check effectively so check effect is good.Above some thus substantially increase life-span and the performance of this product.

accompanying drawing illustrates:

Accompanying drawing 1 is plan view of the present utility model;

Accompanying drawing 2 is sectional drawing of the present utility model;

Accompanying drawing 3 for when the utility model operates and check time each component enlarged view;

embodiment:

By reference to the accompanying drawings 1, accompanying drawing 2 and accompanying drawing 3 be illustrated, and the utility model bearing type non-return device is made up of the arm of force 1, bearing pin 2, side plate 3, outer ring 4, extension spring 5, retainer 6, bearing 7, roller 8, inner ring 9 and baffle plate 10; The arm of force 1 is connected by bearing pin 2 with the side plate 3 in non-return device main body, and side plate 3 is connected with outer ring 4, and inner retainer 6 is installed in the space that outer ring 4 and inner ring 9 formed, and inner ring 9 is arranged on the shaft extension of transmission device ,inner ring 9 is uniformly distributed multiple check plane, roller 8 contacts with outer ring 4, to be arranged in outer ring 4 and inner ring 9 check interplanar dead slot and by retainer 6, multiple roller 8 evenly to be located, the radial direction of strict restriction roller 8 and axial activity space, reach check effect firm rapidly to coordinate during 4 check of outer ring.Retainer 6 is provided with block 10, and block 10 limits retainer 6 axial position, and the retainer 6 made can operate in the same way with outer ring 4 and inner ring 9; Extension spring 5 provides a warping force to make retainer 6 drive roller 8 to be adjacent to mutually to inner ring 9 check plane wedging direction.Be provided with bearing 7 between inner ring 9 and side plate 3, bearing 7 reduces running resistance while ensureing to be formed between inside and outside circle the precision in uniform gap, makes check effect better.

When non-return device runs well, inner ring 9 rotates, baffle plate 10 drives retainer 6 to operate in the same way with roller 8 simultaneously, cavity effect due to retainer 6 particular design makes roller 8 and the contactless running in outer ring 4, to contact with inner ring 9 check plane and without relative movement, the activity space of this design restriction roller 8, guarantees roller 8 and inner ring 9, outer ring 4 parallel contact simultaneously, reduces between roller 8 and retainer 6 and rubs.

When non-return device check, transmission shaft can drive inner ring 9 antiport, now retainer 6 can reverse by drive roller 8 under the pulling of extension spring 5 active force, the check plane compressing roller 8 of inner ring 9 causes maximum positive voltage power to outer ring 4 transmitting torque, retainer 6 guarantees that the position of multiple roller is identical, by the reactive torque of outer ring 4, roller can not being got loose, there is maximum friction in surface of contact, reaches check effect.

Claims (2)

1. bearing type non-return device, is characterized in that: be made up of the arm of force (1), bearing pin (2), side plate (3), outer ring (4), extension spring (5), retainer (6), bearing (7), roller (8), inner ring (9) and baffle plate (10); The arm of force (1) is connected by bearing pin (2) with the side plate (3) in non-return device main body, side plate (3) is connected with outer ring (4), extension spring (5) provides a warping force, extension spring (5) one end is connected with inner ring (9), one end is connected with retainer (6), retainer (6) is installed between outer ring (4) and inner ring (9), and retainer (6) is provided with block (10), and block (10) limits retainer (6) axial position; Bearing (7) is installed between inner ring (9) and side plate (3), and (4) are shaped with ratchet in outer ring, and roller (8) is arranged between outer ring (4) ratchet and outer ring (9) in dead slot, and inner ring (9) is arranged on the shaft extension of transmission device.

2. bearing type non-return device according to claim 1, is characterized in that: multiple roller (8) is evenly located by retainer (6).