CN104828729A - Tension maintaining device - Google Patents
Tension maintaining device Download PDFInfo
- Publication number
- CN104828729A CN104828729A CN201510238989.4A CN201510238989A CN104828729A CN 104828729 A CN104828729 A CN 104828729A CN 201510238989 A CN201510238989 A CN 201510238989A CN 104828729 A CN104828729 A CN 104828729A
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- CN
- China
- Prior art keywords
- gear
- friction dish
- maintaining device
- bearing
- static friction
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- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B66—HOISTING; LIFTING; HAULING
- B66D—CAPSTANS; WINCHES; TACKLES, e.g. PULLEY BLOCKS; HOISTS
- B66D1/00—Rope, cable, or chain winding mechanisms; Capstans
- B66D1/28—Other constructional details
- B66D1/36—Guiding, or otherwise ensuring winding in an orderly manner, of ropes, cables, or chains
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Gears, Cams (AREA)
Abstract
The invention discloses a tension maintaining device, which comprises a first gear and a second gear which are arranged on a same gear shaft in a sleeving manner; the first gear is fixedly arranged on the gear shaft and is connected with a gear drive system of a steel wire rope guide wheel; two ends of the gear shaft are provided with rolling bearings; the second gear is arranged on the gear shaft by virtue of a one-way bearing in a sleeving manner; a bushing is arranged between the second gear and the one-way bearing; the second gear is connected with a gear drive system by virtue of which a motor drives a drum; the end faces on two sides of the second gear are fixedly provided with static friction disks; the static friction disks are correspondingly provided with kinetic friction disks in a pressing manner; the kinetic friction disks are fixedly connected with the outer ring of the one-way bearing in a sleeving manner in the circumferential direction. According the tension maintaining device disclosed by the invention, a pure mechanical structure is adopted for realizing the constant tension of a lifting steel wire rope, the structure is simple, the design is ingenious, the friction disks adopt wet paper base friction materials, high reliability is realized, long service life is guaranteed, and the tension can be adjusted by virtue of the pressing force of the friction disks.
Description
Technical field
The present invention relates to a kind of tension maintaining device be applied on winch, wheel crane and other kinds cord drive mechanical equipment.
Background technology
In lifting appliance, direct motor drive lifting appliance (cylinder), by drum rotating weight sling or put down, lift by crane steel cable to be then connected with hanging object by a guide wheel, in the process of steel rope folding and unfolding, according to the difference of lifting situation, need to ensure that steel rope keeps certain tensile force when folding and unfolding, avoid steel rope to form disorder cable on winching barrel.
Tension maintaining device in tradition lifting appliance, need to be coordinated by circuit and hydraulic efficiency pressure system to make to the change of drive roll tractive force size the constant tension that corresponding feedback ensures steel rope, the structure of this tension maintaining device is too complicated, the entire arrangement design of equipment there is certain difficulty, later maintenance bothers, and also improves the use cost of equipment greatly simultaneously.
Summary of the invention
The present invention solve technical matters be: the complex structure, application difficult, the cost high defect that exist for existing tension maintaining device, provide a kind of novel Purely mechanical tension maintaining device, feasibility and reliability high, control accuracy is high, long service life.
The present invention adopts following technical scheme to realize: a kind of tension maintaining device, comprises the first gear 2 and the second gear 6 that same gear wheel shaft is set with;
Described first gear 2 is fixed on gear wheel shaft 11, and is connected with the gear train assembly of steel rope guide wheel 14, and described gear wheel shaft 11 two ends are equipped with rolling bearing 1;
Described second gear 6 is set on gear wheel shaft 11 by unilateral bearing 9, is provided with lining 5 between the second gear 6 and unilateral bearing 9, and the second gear 6 is connected with the gear train assembly of electrical motor 12 head roll;
The both sides end face of described second gear 6 is installed with static friction dish 10, and described static friction dish 10 correspondence compresses dynamic friction dish 7, and described dynamic friction dish 7 is fixedly sleeved with the outer ring circumference of unilateral bearing 9.
Further, the inner ring of described unilateral bearing 9 is fixedly sleeved on gear wheel shaft 11, and outer ring sleeve has bearing carrier ring 15, and described second gear 6 is sleeved on bearing carrier ring 15 by lining 5, and it is fixedly sleeved that described dynamic friction dish 7 realizes circumference by spline joint and bearing carrier ring 15.
Further, described dynamic friction dish 7 compresses static friction dish 10 by disk spring assembly 8 from the both sides end face of the second gear 6, described disk spring assembly 8 is sleeved on bearing carrier ring 15, one end contacts with the back-up ring 4 be installed on bearing carrier ring, the other end compresses the extruding dynamic friction dish back side, realizes the prestrain between dynamic friction dish and static friction dish.
Further, described static friction dish 10 is fixedly flush-mounted on the both sides end face of the second gear 6.
In the present invention, described unilateral bearing 9 is unidirectional needle bearing.
In the present invention, described dynamic friction dish 7 and static friction dish 10 adopt hygrometric state paper friction material.
The present invention applies to preload and fix its circumferential degree of freedom to the second gear 6 being embedded with friction material by disk spring, and recycling unidirectional needle bearing can the moment transmission in the locked functional realiey direction of one direction.When the input torque of the second gear 6 be greater than kinematics and static friction dish preload the maximum torque that can produce time, the relative dynamic friction dish of static friction dish starts to skid, now, the output torque of the first gear 2 keeps constant, to preload the maximum torque that can produce equal with kinematics and static friction dish, thus realize tensioning and maintain function.
Static friction dish is that paper friction material is directly inlaid in output gear, and well, therefore device has good reliability and can ensure longer life for the hygrometric state paper friction material friction that this device uses, polishing machine.
The present invention has following beneficial effect:
The present invention is Purely mechanical structure, design ingenious, structure is simple, the hygrometric state paper friction material that friction disc adopts, friction, wearability is very good, can ensure long work, there is very high reliability, and can longer life be ensured, regulate friction disc prestrain friction moment size by adjustment part relative position, change disk spring component parameter, namely regulate steel wire tensioning power size.
Below in conjunction with accompanying drawing, the present invention is described in further detail, but be not limited to shown in accompanying drawing.
Accompanying drawing explanation
Fig. 1 is the assembling schematic diagram of tension maintaining device.
Fig. 2 is the tension maintaining device structural scheme of mechanism be connected on lifting appliance.
Fig. 3 is the fundamental diagram of tension maintaining device.
Number in the figure: 1-rolling bearing, 2-first gear, 3-pad, 4-back-up ring, 5-lining, 6-second gear, 7-dynamic friction dish, 8-disk spring assembly, 9-unilateral bearing, 10-static friction dish, 11-gear wheel shaft, 12-electrical motor, 13-cylinder, 14-steel rope guide wheel, 15-bearing carrier ring.
Detailed description of the invention
Embodiment
See Fig. 1, tension maintaining device comprises the first gear 2, second gear 6, dynamic friction dish 7, unilateral bearing 9, static friction dish 10, gear wheel shaft 11.
First gear 2 is fixed on a gear wheel shaft 11, first gear 2 and gear wheel shaft 11 are connected by key or one-body molded, gear wheel shaft 11 two ends are equipped with rolling bearing 1, second gear 6 is set on gear wheel shaft 11 by unilateral bearing 9, the inner ring of unilateral bearing 9 is fixedly sleeved on gear wheel shaft 11, outer ring sleeve has bearing carrier ring 15, second gear 6 is sleeved on bearing carrier ring 15 by lining 5, the both sides end face of the second gear 6 is installed with static friction dish 10, static friction dish 10 is fixedly flush-mounted on the both sides end face of the second gear 6, static friction dish 10 correspondence compresses dynamic friction dish 7, it is fixedly sleeved that dynamic friction dish 7 realizes circumference by spline joint and bearing carrier ring 15.
Concrete, dynamic friction dish 7 compresses static friction dish 10 by disk spring assembly 8 from the both sides end face of the second gear 6, disk spring assembly 8 is sleeved on bearing carrier ring 15, one end contacts with the back-up ring 4 be installed on bearing carrier ring, the other end compresses the dynamic friction dish back side, disk spring assembly 8 and kinematics and static friction dish are contained on same axle (bearing carrier ring), by compressing disk spring, certain thrust is applied to kinematics and static friction dish, make to keep certain friction moment between kinematics and static friction dish, realize the prestrain between dynamic friction dish and static friction dish.Pad 3 is provided with between the back-up ring 4 and the first gear 2 of the second gear 6.
The present invention is when assembling, by adjusting the amount of compression of disk spring, certain load is applied to the second gear 6 by compressing kinematics and static friction dish, when the moment that the second gear 6 transmits is less than the maximum friction moment that preload can produce, the normal transmission of the first gear 2 can be driven, when second gear 6 transmit moment be greater than preload can produce maximum friction moment time, start between kinematics and static friction dish to skid, the output torque of the first gear 2 is constant, equal with the maximum friction moment that kinematics and static friction dish preload produces.
In a particular application, unilateral bearing 9 is unidirectional needle bearing, can reduce mounting structure further.
In the present embodiment, dynamic friction dish 7 and static friction dish 10 adopt hygrometric state paper friction material, and due to the particularity of friction material, friction material should work under the working environment of lubricating oil.
After mentioned strain holdout device assembles, mode of operation is as follows:
Due to the existence of unilateral bearing, relative first gear 2 of the second gear 6 can a direction (being assumed to be conter clockwise) rotate freely, and is namely, when the first gear 2 does not turn, because the effect of unilateral bearing, the second gear 6 can freely rotate by conter clockwise, now not carry-over moment
When rotating relative to first another direction of gear 2 (clockwise direction) to the second gear 6, first gear 2 applies another direction (cw) torque, second gear 6 overcomes the friction moment between kinematics and static friction dish, relatively rotated by lining 5 and bearing carrier ring 15, relative sliding is produced between kinematics and static friction dish, friction moment between the kinematics and static friction dish that second gear 6 and the first gear 2 overcome when relatively rotating is the tension torque that the second gear 2 transmits, when friction moment between kinematics and static friction dish is constant, constant tension.
Be connected with the gear train assembly of electrical motor 12 head roll 13 in conjunction with see the second gear 6 in Fig. 2, Fig. 1; First gear 2 is connected with the gear train assembly of steel rope guide wheel 14;
In conjunction with see Fig. 3, first gear 2 can not rotate clockwise because unilateral bearing limits, and the second gear 6 is connected with unilateral bearing by a lining slided, can rotate backward, so, when relative first gear 2 of the second gear 6 rotates clockwise, as long as the friction moment that the second gear 6 overcomes between kinematics and static friction dish is just rotary.When rotating torque exceedes setting friction moment, produce relative rotation between second gear 6 and the first gear 2, relative sliding between kinematics and static friction dish, and the moment of relative sliding is certain value (setting value M=X N.m), X value can be regulated by the amount of compression of disk spring assembly.
Electrical motor 12 head roll 13, is rotated by cylinder 13 and weight is sling or puts down, lift by crane steel cable and be then connected with hanging object by steel rope guide wheel 14.
In working process, the second gear 6 is connected with the gear on the axle of direct motor drive cylinder 13, the first gear 2 and the gears meshing on steel cable guide wheel shaft, its objective is to ensure that steel cable keeps certain tensile force when unloaded folding and unfolding.
When the second gear 6 rotates counterclockwise relative to the first gear 2 (consistent with the direction that unilateral bearing can rotate), freely can rotate, when lifting appliance hoisting heavy, not need the tensioning problem considering steel rope.；
When relative first gear 2 of the second gear 6 rotates clockwise, just can rotate when the second gear 6 rotating torque is greater than friction moment (the setting value M=X N.m) of setting, friction moment between the kinematics and static friction dish that second gear 6 overcomes is exactly the moment of rotation that the first gear 2 exports, the i.e. tensioning moment of steel rope guide wheel 14, friction force between kinematics and static friction dish is constant, then the tensile force of steel rope guide wheel 14 pairs of steel ropes generations is constant, so just can make to keep certain tensile force during steel rope folding and unfolding.
Above-described embodiment is the present invention's preferably embodiment; but embodiments of the present invention are not restricted to the described embodiments; change, the modification done under other any does not deviate from Spirit Essence of the present invention and principle, substitute, combine, simplify; all should be the substitute mode of equivalence, be included within protection scope of the present invention.
Claims (6)
1. tension maintaining device, is characterized in that: comprise the first gear (2) and the second gear (6) that same gear wheel shaft is set with;
Described first gear (2) is fixed on gear wheel shaft (11), and is connected with the gear train assembly of steel rope guide wheel (14), and described gear wheel shaft (11) two ends are equipped with rolling bearing (1);
Described second gear (6) is set on gear wheel shaft (11) by unilateral bearing (9), be provided with lining (5) between second gear (6) and unilateral bearing (9), the second gear (6) is connected with the gear train assembly of electrical motor (12) head roll;
The both sides end face of described second gear (6) is installed with static friction dish (10), described static friction dish (10) correspondence compresses dynamic friction dish (7), and described dynamic friction dish (7) is fixedly sleeved with the outer ring circumference of unilateral bearing (9).
2. tension maintaining device according to claim 1, the inner ring of described unilateral bearing (9) is fixedly sleeved on gear wheel shaft (11), outer ring sleeve has bearing carrier ring (15), described second gear (6) is sleeved on bearing carrier ring (15) by lining (5), and it is fixedly sleeved that described dynamic friction dish (7) realizes circumference by spline joint and bearing carrier ring (15).
3. tension maintaining device according to claim 2, described dynamic friction dish (7) compresses static friction dish (10) by disk spring assembly (8) from the both sides end face of the second gear (6), described disk spring assembly (8) is sleeved on bearing carrier ring (15), one end contacts with the back-up ring be installed on bearing carrier ring (4), the other end compresses the extruding dynamic friction dish back side, realizes the prestrain between dynamic friction dish and static friction dish.
4. tension maintaining device according to claim 3, described static friction dish (10) is fixedly flush-mounted on the both sides end face of the second gear (6).
5. the tension maintaining device according to any one of claim 1-4, described unilateral bearing (9) is unidirectional needle bearing.
6. tension maintaining device according to claim 5, described dynamic friction dish (7) and static friction dish (10) adopt hygrometric state paper friction material.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510238989.4A CN104828729B (en) | 2015-05-12 | 2015-05-12 | Tension maintaining device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510238989.4A CN104828729B (en) | 2015-05-12 | 2015-05-12 | Tension maintaining device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN104828729A true CN104828729A (en) | 2015-08-12 |
| CN104828729B CN104828729B (en) | 2017-08-29 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510238989.4A Active CN104828729B (en) | 2015-05-12 | 2015-05-12 | Tension maintaining device |
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| CN (1) | CN104828729B (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106758580A (en) * | 2016-12-30 | 2017-05-31 | 巨力索具股份有限公司 | A kind of portable fiber rope strainer |
| CN106840646A (en) * | 2017-04-11 | 2017-06-13 | 中国航空综合技术研究所 | A kind of mechanical torque load simulating device |
| CN115650092A (en) * | 2022-10-25 | 2023-01-31 | 徐州建机工程机械有限公司 | Rope tightening device and tower crane |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2217274Y (en) * | 1993-12-10 | 1996-01-10 | 马钢法兰环件制造联合公司配件厂 | Electric cable winding drum with constant tension |
| US20010049306A1 (en) * | 2000-06-06 | 2001-12-06 | Toshinori Tanaka | Electric power steering apparatus |
| CN101077760A (en) * | 2007-06-05 | 2007-11-28 | 唐志明 | Soft starting hoisting gear for two stage planetary gear train transmission |
| EP1939475A2 (en) * | 2006-10-17 | 2008-07-02 | JLG Industries, Inc. | Slip clutch |
| CN103625995A (en) * | 2013-12-13 | 2014-03-12 | 华北水利水电大学 | Constant-tension type cable drum device capable of flexibly winding cable |
| CN203602292U (en) * | 2013-11-20 | 2014-05-21 | 郑州飞机装备有限责任公司 | Tensioning mechanism for laying of traction steel cable of winch |
| CN204727524U (en) * | 2015-05-12 | 2015-10-28 | 中南大学 | A kind of tension maintaining device |
-
2015
- 2015-05-12 CN CN201510238989.4A patent/CN104828729B/en active Active
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2217274Y (en) * | 1993-12-10 | 1996-01-10 | 马钢法兰环件制造联合公司配件厂 | Electric cable winding drum with constant tension |
| US20010049306A1 (en) * | 2000-06-06 | 2001-12-06 | Toshinori Tanaka | Electric power steering apparatus |
| EP1939475A2 (en) * | 2006-10-17 | 2008-07-02 | JLG Industries, Inc. | Slip clutch |
| CN101077760A (en) * | 2007-06-05 | 2007-11-28 | 唐志明 | Soft starting hoisting gear for two stage planetary gear train transmission |
| CN203602292U (en) * | 2013-11-20 | 2014-05-21 | 郑州飞机装备有限责任公司 | Tensioning mechanism for laying of traction steel cable of winch |
| CN103625995A (en) * | 2013-12-13 | 2014-03-12 | 华北水利水电大学 | Constant-tension type cable drum device capable of flexibly winding cable |
| CN204727524U (en) * | 2015-05-12 | 2015-10-28 | 中南大学 | A kind of tension maintaining device |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106758580A (en) * | 2016-12-30 | 2017-05-31 | 巨力索具股份有限公司 | A kind of portable fiber rope strainer |
| CN106840646A (en) * | 2017-04-11 | 2017-06-13 | 中国航空综合技术研究所 | A kind of mechanical torque load simulating device |
| CN106840646B (en) * | 2017-04-11 | 2023-09-05 | 中国航空综合技术研究所 | Mechanical torque load simulation device |
| CN115650092A (en) * | 2022-10-25 | 2023-01-31 | 徐州建机工程机械有限公司 | Rope tightening device and tower crane |
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| CN104828729B (en) | 2017-08-29 |
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| SE01 | Entry into force of request for substantive examination | ||
| CB03 | Change of inventor or designer information |
Inventor after: Hu Chunkai Inventor after: Hu Tianlong Chak Inventor after: Hong Siyang Inventor after: Ruan Li Inventor after: Hu Chunkai Tianlong Hu Ze Yu Hong Siyang Ruan Li left powerhouse Inventor before: Hu Chunkai Inventor before: Hu Tianlong pool space Inventor before: Hong Siyang Inventor before: Ruan Li Inventor before: Hu Chunkai Hu Tianlong Ze Yu Hong Siyang Ruan Li left powerhouse |
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| GR01 | Patent grant |