CN202864804U - Low-speed contact type non-return device - Google Patents
Low-speed contact type non-return device Download PDFInfo
- Publication number
- CN202864804U CN202864804U CN 201220589384 CN201220589384U CN202864804U CN 202864804 U CN202864804 U CN 202864804U CN 201220589384 CN201220589384 CN 201220589384 CN 201220589384 U CN201220589384 U CN 201220589384U CN 202864804 U CN202864804 U CN 202864804U
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- China
- Prior art keywords
- wedge
- inner ring
- outer ring
- shaped blocks
- speed contact
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- Expired - Fee Related
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- 230000001050 lubricating effect Effects 0.000 claims description 6
- 239000003921 oil Substances 0.000 claims description 5
- 239000010687 lubricating oil Substances 0.000 claims description 3
- 239000011159 matrix material Substances 0.000 claims description 3
- 239000004744 fabric Substances 0.000 claims description 2
- 230000000712 assembly Effects 0.000 abstract description 2
- 238000000429 assembly Methods 0.000 abstract description 2
- 238000005096 rolling process Methods 0.000 abstract 2
- 230000003247 decreasing effect Effects 0.000 abstract 1
- 239000000463 material Substances 0.000 description 4
- 238000009434 installation Methods 0.000 description 3
- 230000005540 biological transmission Effects 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 230000005484 gravity Effects 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 239000002390 adhesive tape Substances 0.000 description 1
- 230000003321 amplification Effects 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000000314 lubricant Substances 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 230000013011 mating Effects 0.000 description 1
- 238000003199 nucleic acid amplification method Methods 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 230000035939 shock Effects 0.000 description 1
- 238000012546 transfer Methods 0.000 description 1
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- Rolling Contact Bearings (AREA)
Abstract
The utility model discloses a low-speed contact type non-return device which comprises an inner ring, an outer ring and a rolling way formed by the inner ring and the outer ring. A pair of retaining racks is installed in the rolling way, the outer sides of the retaining racks are provided with bearings, cylindrical pins for installing wedge-shaped blocks are distributed between the retaining racks in a circumferential mode, and the wedge-shaped blocks are installed on the cylindrical pins and can rotate along the axes of the cylindrical pins. One side of each wedge-shaped block is provided with a roller, the rollers are fixedly installed between the retaining racks, a torsional spring is installed between each pair of rollers and the wedge-shaped blocks to form a group of non-return assemblies, and the torsional springs enable the wedge-shaped blocks to be contacted with the work surfaces of the inner ring and the outer ring. When the inner ring rotates forwards, and the wedge-shaped blocks are trend to move towards the wedge-shaped block eccentric radius decreasing direction. When the inner ring rotates reversely, the wedge-shaped blocks move towards the wedge-shaped block eccentric radius increasing direction, and a self-locking state can be achieved. The low-speed contact type non-return device has the advantages of being light in weight, compact in structure, reliable in force transferring, easy to loosen, convenient to install, not high in installing accuracy requirement and the like.
Description
Technical field
The utility model relates to a kind of brake equipment of load transfer device, specifically a kind of low speed contact formula holdback.
Background technology
Holdback is that be widely used in belt conveyer, gig a kind of prevents the device that reverses, when the belt conveyer of transported material that makes progress, when gig stops owing to reasons such as manual control and contingencies, holdback can prevent that the equipment that the deadweight because of adhesive tape and material causes from reversing, thus assurance equipment and personnel's safety.The holdback kind is more, but there is respectively following shortcoming in they: electromagnetism brake shoe formula holdback volume, weight are large, and complex structure is adjusted maintenance difficult, and durability is relatively poor; Belt holdback shortcoming is to reverse first in the check process one section, and in order to guarantee enough friction force, the head diameter of cylinder is larger, and the reversing distance is just longer; Ratchet-type holdback oad is large, and binding site is restricted, and impact shock is large, in conjunction with the time noise is arranged, be only applicable to the little occasion of slip; Roller type brake is that development is comparatively perfect a kind of in the various holdbacks, but the roller negligible amounts, and contact stress is high, after reaching certain frequency of exposure, contact surface can be worn into pit, easily causes the self-locking inefficacy, and the star-wheel manufacturability is poor, processing difficulties, and assembly precision is had relatively high expectations.
Summary of the invention
The technical problems to be solved in the utility model provide a kind of lightweight, compact conformation, power transmission reliable, free easy, easy for installation, the less demanding low speed contact formula of setting accuracy holdback.
In order to solve the problems of the technologies described above, low speed contact formula holdback of the present utility model, comprise inner ring and outer ring and the raceway that is formed by inner ring and outer ring, the retainer of a pair of annular is installed in the raceway that inner ring and outer ring form, the outside of two retainers is respectively arranged with to support the bearing of inner ring and outer ring, be useful on the straight pin that wedge is installed along circumferential row cloth between the retainer, wedge is installed on the straight pin and can rotates along the axle center of straight pin, each wedge one side is equipped with a roller, roller is fixedly mounted between two retainers, torsion spring is installed between every pair of rollers and the wedge forms one group of check assembly, torsion spring makes wedge contact with the outer ring running surface with inner ring; During the inner ring forward rotation, the trend of the direction motion that the oriented wedge eccentric arm of wedge reduces; When inner ring reverses, wedge is rotated to the direction that eccentric arm increases, and can reach self-locking state.
The arranged outside of two bearings has upper end cover and the bottom end cover of bearing felt in inner ring and outer ring.
Be provided with lubricating cup on the sidewall of described outer ring, lubricating cup can inject lubricating oil by the oil duct on the matrix of outer ring in raceway.
The utility model has the advantage of:
The inner employing organized the check assemblies more between outer ring and the inner ring, being distributed on whole inner ring and outer ring forms in the raceway, the check components distribution is evenly reasonable, and area of contact is large, and the check time is short, check is safe and reliable, effectively stop material because of driving in the wrong direction and the downslide accident that gravity occurs, and in the situation that check, the wedge self-locking, whole actuating device is in the unloading state, effectively protects drive element; The inner thin oil lubricant system that adopts in inner ring and outer ring, holdback running surface friction coefficient reduces when making normal operation, significantly reduces the wearing and tearing of wedge and Internal and external cycle, and operation did not need in one season to change oil and safeguard; The more traditional holdback of this holdback, in the situation that transmit identical check moment, have lightweight, compact conformation, power transmission reliable, free the advantages such as easy, easy for installation, that setting accuracy is less demanding, be particularly useful for the occasion of driving in the wrong direction and gliding that the materials such as conveyer, gig occur because of gravity, thus assurance equipment and personnel's safety.
Description of drawings
Fig. 1 is low speed contact formula holdback overall construction drawing of the present utility model;
Fig. 2 is that the A-A of Fig. 1 is to constructional drawing;
Fig. 3 is the local amplification assumption diagram of wedge of the present utility model-retainer;
Fig. 4 is the B-B constructional drawing of Fig. 3.
The specific embodiment
Below in conjunction with the drawings and specific embodiments, low speed contact formula holdback of the present utility model is described in further detail.
As shown in the figure, this low speed contact formula holdback comprises inner ring 12 and outer ring 9 and the raceway 25 that is formed by inner ring and outer ring, the retainer 17 of a pair of annular is installed in the raceway 25 that inner ring and outer ring form, the outside of two retainers 17 is respectively arranged with a bearing 13 that is used for supporting inner ring 12 and outer ring 9, the arranged outside of two bearings 13 has bearing 13 is sealed in upper end cover 16 and bottom end cover 4 in inner ring 12 and the outer ring 9, be placed with between the retainer 17 for wedge 15 straight pins 21 are installed, wedge 15 is installed on the straight pin and can rotates along the axle center of straight pin 21, each wedge one side is equipped with a roller 23, roller is fixedly mounted between two retainers (17), torsion spring 14 is installed between every pair of rollers 23 and the wedge 15 forms one group of check assembly, torsion spring 14 makes wedge 15 contact with outer ring 9 running surfaces with inner ring 12; When inner ring is rotated in the forward, the trend of the direction motion that wedge 15 oriented wedge 15 eccentric arms reduce; When inner ring 12 counter-rotating, wedge 15 is rotated to the direction that eccentric arm increases, and can reach self-locking state.Said eccentric arm refers to the radius by the wedge of wedge spindle central to the inner ring centre of gration line.Be provided with lubricating cup 20 on the sidewall of described outer ring 9, lubricating cup can inject lubricating oil by the oil duct on the matrix of outer ring in raceway.
Working process is as follows:
With two bearing 13 positioning supports, motion steadily between the inner ring 12 of low speed contact formula holdback of the present utility model and the outer ring 9; During normal operation, the trend of the direction motion that wedge 15 oriented wedge 15 eccentric arms reduce friction is reduced, but the initial installation torsion of torsion spring 14 can make wedge 15 contact with outer ring 9 running surfaces with inner ring 12 all the time; When inner ring 12 counter-rotating, because the friction force of wedge 15 and inner ring 12, outer ring 9 mating surfacess, so that wedge 15 rotates to the direction that eccentric arm increases, and within the extremely short time, reach self-locking, wedging inner ring 12 and outer ring 9 effectively stop the relative motion of Internal and external cycle, reach the function of check, after the check, when waiting overhaul of the equipments to recover normally again proper motion, under the effect of driving surface friction force, holdback wedge 15 forwards reset holdback.
Claims (3)
1. low speed contact formula holdback, it is characterized in that: comprise inner ring (12) and outer ring (9) and the raceway (25) that is formed by inner ring (12) and outer ring (9), the retainer (17) of a pair of annular is installed in the raceway (25) that described inner ring (12) and outer ring (9) form, the outside of two retainers (17) is respectively arranged with to support the bearing (13) of inner ring (12) and outer ring (9), be useful on the straight pin (21) that wedge (15) and roller (23) are installed along circumferential row cloth between the described retainer (17), wedge (15) is installed on the straight pin and can freely rotates along the axle center of straight pin (21), each wedge one side is equipped with a roller (23), roller is fixedly mounted between two retainers (17), torsion spring (14) is installed between every pair of rollers (23) and the wedge (15) forms one group of check assembly, torsion spring (14) makes wedge (15) contact with outer ring (9) running surface with inner ring (12); During the inner ring forward rotation, the trend of the direction motion that the oriented wedge of wedge (15) (15) eccentric arm reduces; When inner ring (12) reverses, wedge (15) is rotated to the direction that eccentric arm increases, and can reach self-locking state.
2. according to low speed contact formula holdback claimed in claim 1, it is characterized in that: the arranged outside of two bearings (13) has bearing (13) is sealed in upper end cover (16) and bottom end cover (4) in inner ring (12) and outer ring (9).
3. according to low speed contact formula holdback claimed in claim 2, it is characterized in that: be provided with lubricating cup (20) on the sidewall of described outer ring (9), lubricating cup can inject lubricating oil by the oil duct on the matrix of outer ring in raceway.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220589384 CN202864804U (en) | 2012-11-10 | 2012-11-10 | Low-speed contact type non-return device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220589384 CN202864804U (en) | 2012-11-10 | 2012-11-10 | Low-speed contact type non-return device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202864804U true CN202864804U (en) | 2013-04-10 |
Family
ID=48031544
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220589384 Expired - Fee Related CN202864804U (en) | 2012-11-10 | 2012-11-10 | Low-speed contact type non-return device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202864804U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102923607A (en) * | 2012-11-10 | 2013-02-13 | 江苏凯力德科技有限公司 | Low-speed contact type backstop |
-
2012
- 2012-11-10 CN CN 201220589384 patent/CN202864804U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102923607A (en) * | 2012-11-10 | 2013-02-13 | 江苏凯力德科技有限公司 | Low-speed contact type backstop |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20130410 Termination date: 20151110 |
|
| EXPY | Termination of patent right or utility model |