CN109882548B - Worm gear clearance adjustment mechanism - Google Patents
Worm gear clearance adjustment mechanism Download PDFInfo
- Publication number
- CN109882548B CN109882548B CN201910321534.7A CN201910321534A CN109882548B CN 109882548 B CN109882548 B CN 109882548B CN 201910321534 A CN201910321534 A CN 201910321534A CN 109882548 B CN109882548 B CN 109882548B
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- locking
- worm
- bearing seat
- notch
- bearing
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- 239000003638 chemical reducing agent Substances 0.000 abstract description 13
- 125000004122 cyclic group Chemical group 0.000 abstract description 2
- 238000006073 displacement reaction Methods 0.000 abstract description 2
- 238000005299 abrasion Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
Abstract
The utility model relates to the technical field of speed reducer production, and particularly discloses a worm gear clearance adjusting mechanism, which comprises a bearing seat and is characterized in that: the bearing frame includes linkage segment and screw thread section, and the linkage segment passes through bearing and worm fixed connection, and the screw thread section is located the one end that the worm was kept away from to the bearing frame, and the outside of screw thread section is equipped with the locking dish that is used for preventing worm axial displacement, the locking dish be cyclic annular and with bearing frame threaded connection, open on the annular terminal surface of locking dish have with locking dish surface parallel locking breach, be equipped with the fastening screw that is used for compressing the locking breach on the axial terminal surface of locking dish, the fastening screw is locked the screw between locking dish and the bearing frame to the clamping force of locking breach. The gap between the worm and the worm gear is adjusted through the clamping groove on the bearing seat, and the bearing seat is locked through the locking disc, the locking notch and the matching of the fastening screw, so that the worm is prevented from moving axially, and the gap adjustment of the worm and the axial locking of the worm are realized.
Description
Technical Field
The utility model relates to the technical field of speed reducer production, in particular to a worm and gear clearance adjusting mechanism.
Background
The speed reducer is a relatively precise machine, and is used for reducing the rotating speed and increasing the torque so as to meet the working requirement. The conventional corner type speed reducer is easy to vibrate and noise due to the existence of a worm gear clearance after long running time, and abrasion of a worm gear is accelerated.
See chinese utility model and authorize the patent, authorize the bulletin number 206129991U, authorize bulletin day 2017 04 month 26, disclose a worm gear reducer, including box (1) and worm (2) of setting in box (1), all be connected with bearing (3) between box (1) and the position that worm (2) are close to both ends, its characterized in that: be equipped with on box (1) and drive one of them bearing (3) terminal surface and drive worm (2) and make another bearing (3) terminal surface conflict box (1) inner wall, realize the spacing driving piece (4) of worm (2) axial, driving piece (4) are the bolt of conflict bearing (3) outer lane terminal surface.
The worm gear reducer disclosed by the above can only axially limit the worm, and cannot adjust the axial clearance of the worm gear, so that the worm gear and the worm are engaged and connected by the meshing teeth with the smallest clearance, and the worm is prevented from axially moving after adjustment.
Disclosure of Invention
The utility model aims at providing an adjusting mechanism capable of quickly adjusting the clearance between a worm gear and a worm.
In order to achieve the above purpose, the utility model adopts the following technical scheme: the utility model provides a worm gear clearance adjustment mechanism, includes the bearing frame, its characterized in that: the bearing frame includes linkage segment and screw thread section, and the linkage segment passes through bearing and worm fixed connection, and the screw thread section is located the one end that the worm was kept away from to the bearing frame, and the outside of screw thread section is equipped with the locking dish that is used for preventing worm axial displacement, the locking dish be cyclic annular and with bearing frame threaded connection, open on the annular terminal surface of locking dish have with locking dish surface parallel locking breach, be equipped with the fastening screw that is used for compressing the locking breach on the axial terminal surface of locking dish, the fastening screw is locked the screw between locking dish and the bearing frame to the clamping force of locking breach.
The bearing seat also comprises a clamping section, wherein the clamping section is positioned at one side of the threaded section, and the end surface of the clamping section is provided with a clamping groove which is convenient for rotating the bearing seat. The clamping grooves are arranged in a plurality and symmetrically distributed on the end face of the bearing seat.
The locking notch is a rectangular notch, the width of the rectangular notch at least occupies one half of the width of the locking disc, and the notch length of the rectangular notch is at least one half of the circumference of the locking disc.
The fastening screw is located the outside of locking breach, and fastening screw's terminal surface sinks into the axial terminal surface of locking dish.
The fastening screw is a cross groove screw, and the cross groove screw penetrates through and contracts the locking notch to enable the bearing seat not to move in the locking disc.
The utility model has the beneficial effects that: the gap between the worm and the worm gear is adjusted through the clamping groove on the bearing seat, and the bearing seat is locked through the locking disc, the locking notch and the matching of the fastening screw, so that the worm is prevented from moving axially, and the gap adjustment of the worm and the axial locking of the worm are realized.
Drawings
Fig. 1 is a front view of a speed reducer having a worm gear backlash adjustment mechanism.
Fig. 2 is a side view of a speed reducer with a worm gear lash adjustment mechanism.
Fig. 3 is a perspective view of a speed reducer with a worm gear clearance adjustment mechanism.
Fig. 4 is a perspective view of a reduction gear having a worm gear backlash adjustment mechanism.
Fig. 5 is a schematic perspective view of a worm gear clearance adjustment mechanism.
Fig. 6 is an assembled cross-sectional view of the worm gear backlash adjustment mechanism.
Fig. 7 is an exploded view of the worm gear backlash adjustment mechanism.
Fig. 8 is a schematic structural view of the bearing housing.
Fig. 9 is a second schematic structural view of the bearing seat.
Fig. 10 is a schematic view of the structure of the locking plate.
Fig. 11 is a schematic diagram of a second structure of the locking plate.
Fig. 12 is a cross-sectional view of a reduction gear having a worm gear backlash adjustment mechanism.
In the figure: 1. the device comprises a speed reducer, 2, a shell, 3, a worm, 4, a worm wheel, 5, a bearing seat, 6, a connecting section, 7, a threaded section, 8, a clamping section, 9, a clamping groove, 10, a locking disc, 11, a locking notch, 12, a bolt hole, 13, a bolt, 14 and a fastening screw.
Detailed Description
The utility model is further illustrated by the following examples in conjunction with the accompanying drawings:
referring to fig. 1-4, a speed reducer 1 includes a housing 2 having a shaft hole, and a worm 3 and a worm wheel 4 mounted in the housing 2, and a worm wheel gap adjusting mechanism of the present utility model is mounted on one side of the housing 2 of the speed reducer 1.
The adjusting mechanism comprises a bearing seat 5, the bearing seat 5 is slidably arranged in the shaft hole, as shown in fig. 5-9, the bearing seat 5 comprises a connecting section 6 and a threaded section 7, the connecting section 6 is fixedly connected with the worm 3 through a bearing, and the threaded section 7 is positioned at one end of the bearing seat 5 far away from the worm 3. The bearing seat 5 further comprises a clamping section 8, the clamping section 8 is located on one side of the threaded section 7, and a clamping groove 9 which is convenient for rotating the bearing seat 5 is formed in the end face of the clamping section 8. The clamping grooves 9 are provided with a plurality of clamping grooves and are symmetrically distributed on the end face of the bearing seat 5. The bearing seat 5 of this embodiment is provided with 4 clamping grooves 9, and every two adjacent clamping grooves 9 form an included angle of 90 degrees. The bearing adjusting tool sold in the market is arranged in the clamping groove 9, the bearing seat 5 is rotated, and the bearing seat 5 drives the worm 3 to move along the axial direction, so that the worm wheel 4 and the worm 3 are meshed and connected by the meshing teeth with the minimum gap.
When adjusted, the bearing seat 5 needs to be locked, so that the worm 3 is prevented from moving axially in the transmission process due to the clearance of threads on the bearing seat 5. Therefore, a locking disc 10 for preventing the worm 3 from moving axially is arranged on the outer side of the threaded section 7 of the bearing seat 5, as shown in fig. 10-11, the locking disc 10 is annular and is in threaded connection with the bearing seat 5, a locking notch 11 parallel to the surface of the locking disc 10 is formed on the annular end surface of the locking disc 10, and in order to increase the clasping degree of the locking notch 11 on the threads between the locking disc 10 and the bearing seat 5, the locking notch 11 is set as a rectangular notch, and the rectangular notch radially penetrates through the annular locking disc 10 and is in contact with the threads between the locking disc 10 and the bearing seat 5. The width of the rectangular notch occupies at least one half of the width of the locking plate 10, and the notch length of the rectangular notch is at least one half of the circumference of a part of the locking plate 10. The locking disk 10 is provided with a plurality of bolt 13 holes 12 on an axial end face, and the locking disk 10 is abutted against the housing 2 by inserting the bolts 13 into the bolt 13 holes 12 and by a tool.
The axial end face of the locking disc 10 is provided with a fastening screw 14 for compressing the locking notch 11, when the fastening screw 14 is screwed to the locking notch 11, the locking notch 11 starts to shrink and the notch starts to narrow, the locking notch 11 deforms, and the fastening force of the fastening screw 14 to the locking notch 11 locks the thread between the locking disc 10 and the bearing seat 5, so that the worm 3 cannot axially move during working.
In order to tighten the locking notch 11, the fastening screw 14 is arranged outside the locking notch 11, and the end surface of the fastening screw 14 is sunk into the axial end surface of the locking disc 10, so that the end surface of the fastening screw 14 is prevented from being higher than the axial end surface of the locking disc 10, and the axial movement of the worm 3 caused by collision of other equipment with the fastening screw 14 when the speed reducer 1 is used is avoided.
The fastening screw 14 is a cross-grooved screw which passes through and tightens the locking notch 11 so that the bearing housing 5 does not move within the locking disc 10.
As shown in fig. 12, in actual use, the tool pushes the bearing seat 5 to slide in the housing 2 to drive the worm 3 to move, so that the worm wheel 4 and the worm 3 are engaged with each other with the smallest gap between the teeth. Then the locking disc 10 is rotated, the locking disc 10 is attached to the shell 2 through threaded connection, the fastening screw 14 is screwed by a tool, the locking notch 11 is contracted, threads between the bearing seat 5 and the locking disc 10 are locked, and no thread gap exists between the bearing seat 5 and the locking disc 10. Finally, the locking disk 10 is fastened to the housing 2 by means of bolts 13.
The gap between the worm and the worm gear is adjusted through the clamping groove on the bearing seat, and the bearing seat is locked through the locking disc, the locking notch and the matching of the fastening screw, so that the worm is prevented from moving axially, and the gap adjustment of the worm and the axial locking of the worm are realized.
The foregoing description of the preferred embodiments of the utility model is not intended to be limiting, but rather is intended to cover all modifications, equivalents, and alternatives falling within the spirit and principles of the utility model.
Claims (3)
1. The utility model provides a worm gear clearance adjustment mechanism, includes the bearing frame, its characterized in that: the bearing seat comprises a connecting section and a threaded section, the connecting section is fixedly connected with the worm through a bearing, the threaded section is positioned at one end of the bearing seat far away from the worm, the outer side of the threaded section is provided with a locking disc for preventing the worm from moving axially, the locking disc is annular and is in threaded connection with the bearing seat, the annular end face of the locking disc is provided with a locking notch parallel to the surface of the locking disc, the locking notch is a rectangular notch, the width of the rectangular notch at least occupies one half of the width of the locking disc, and the notch length of the rectangular notch is at least one half of the circumference of the locking disc; the axial end face of the locking disc is provided with a fastening screw used for compressing the locking notch, and the clamping force of the fastening screw to the locking notch locks the thread between the locking disc and the bearing seat; the fastening screw is positioned at the outer side of the locking notch, and the end face of the fastening screw is sunk into the axial end face of the locking disc; the bearing seat also comprises a clamping section, wherein the clamping section is positioned at one side of the threaded section, and the end surface of the clamping section is provided with a clamping groove which is convenient for rotating the bearing seat.
2. The worm and gear clearance adjustment mechanism according to claim 1, wherein the clamping grooves are provided in a plurality and symmetrically distributed on the end surface of the bearing seat.
3. The worm and gear backlash adjustment mechanism according to claim 1, characterized in that the tightening screw is a cross-grooved screw that passes through and tightens the locking notch so that the bearing housing does not move in the locking disc.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910321534.7A CN109882548B (en) | 2019-04-18 | 2019-04-18 | Worm gear clearance adjustment mechanism |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910321534.7A CN109882548B (en) | 2019-04-18 | 2019-04-18 | Worm gear clearance adjustment mechanism |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN109882548A CN109882548A (en) | 2019-06-14 |
| CN109882548B true CN109882548B (en) | 2024-01-19 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910321534.7A Active CN109882548B (en) | 2019-04-18 | 2019-04-18 | Worm gear clearance adjustment mechanism |
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| CN (1) | CN109882548B (en) |
Citations (19)
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| DE2556226B1 (en) * | 1975-12-13 | 1977-03-24 | Thyssen Industrie | Axially adjustable worm wheel bearings |
| KR19990001196U (en) * | 1997-06-17 | 1999-01-15 | 김재복 | Backlash adjusting device of double lead worm gear for rotary table of numerical control machine tool |
| JPH1120724A (en) * | 1997-07-01 | 1999-01-26 | Showa:Kk | Worm gear structure in electric power steering device and backlash regulating method for worm gear |
| EP1065132A1 (en) * | 1999-06-28 | 2001-01-03 | Koyo Seiko Co., Ltd. | Electric power steering apparatus |
| JP2006224895A (en) * | 2005-02-21 | 2006-08-31 | Fuji Kiko Co Ltd | Rotation rattling adjustment structure for variable steering angle mechanism |
| FR2937607A1 (en) * | 2008-10-23 | 2010-04-30 | Jtekt Europe Sas | Auger and worm wheel type mechanical speed reducer for use in motor vehicle, has clearance retrieving body including primary cup engaged against bearing of auger and secondary cup positioned against bore of casing |
| EP2444297A2 (en) * | 2010-10-20 | 2012-04-25 | JTEKT Corporation | Electric power steering system |
| CN202690967U (en) * | 2012-05-08 | 2013-01-23 | 杭州中德传动设备有限公司 | Swelling linking speed reducer |
| CN203696399U (en) * | 2013-12-24 | 2014-07-09 | 江苏超力电器有限公司 | Worm gear and worm detection adjustment device of electric power steering gear of automobile |
| CN204004199U (en) * | 2014-08-12 | 2014-12-10 | 浙江一机机床制造有限公司 | A kind of Worm and worm-wheel gearing |
| CN204387256U (en) * | 2014-12-26 | 2015-06-10 | 广州市昊志机电股份有限公司 | A kind of structure adjusting gap of worm |
| CN205745107U (en) * | 2016-05-19 | 2016-11-30 | 无锡凯能光伏设备有限公司 | A kind of novel adjustable clearance device for revolving and driving |
| CN206129991U (en) * | 2016-09-22 | 2017-04-26 | 浙江珠儿纳机械有限公司 | Worm gear and worm reducer |
| CN106884974A (en) * | 2017-04-06 | 2017-06-23 | 国电联合动力技术有限公司 | A kind of wind turbine generator system gear box lubricating system and its control method |
| CN107504133A (en) * | 2017-10-20 | 2017-12-22 | 台州椒星传动设备有限公司 | A kind of worm type of reduction gearing |
| CN206889621U (en) * | 2016-12-14 | 2018-01-16 | 济南第一机床有限公司 | A kind of mechanical mechanism gap of worm adjusting apparatus |
| CN108019494A (en) * | 2018-01-09 | 2018-05-11 | 台州椒星传动设备有限公司 | A kind of mechanism for axial adjusting of accurate retarding machine input shaft |
| CN208602557U (en) * | 2018-08-27 | 2019-03-15 | 华晨鑫源重庆汽车有限公司 | A kind of adjustable steering system power assisting device in gap |
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2019
- 2019-04-18 CN CN201910321534.7A patent/CN109882548B/en active Active
Patent Citations (19)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE2556226B1 (en) * | 1975-12-13 | 1977-03-24 | Thyssen Industrie | Axially adjustable worm wheel bearings |
| KR19990001196U (en) * | 1997-06-17 | 1999-01-15 | 김재복 | Backlash adjusting device of double lead worm gear for rotary table of numerical control machine tool |
| JPH1120724A (en) * | 1997-07-01 | 1999-01-26 | Showa:Kk | Worm gear structure in electric power steering device and backlash regulating method for worm gear |
| EP1065132A1 (en) * | 1999-06-28 | 2001-01-03 | Koyo Seiko Co., Ltd. | Electric power steering apparatus |
| JP2006224895A (en) * | 2005-02-21 | 2006-08-31 | Fuji Kiko Co Ltd | Rotation rattling adjustment structure for variable steering angle mechanism |
| FR2937607A1 (en) * | 2008-10-23 | 2010-04-30 | Jtekt Europe Sas | Auger and worm wheel type mechanical speed reducer for use in motor vehicle, has clearance retrieving body including primary cup engaged against bearing of auger and secondary cup positioned against bore of casing |
| EP2444297A2 (en) * | 2010-10-20 | 2012-04-25 | JTEKT Corporation | Electric power steering system |
| CN202690967U (en) * | 2012-05-08 | 2013-01-23 | 杭州中德传动设备有限公司 | Swelling linking speed reducer |
| CN203696399U (en) * | 2013-12-24 | 2014-07-09 | 江苏超力电器有限公司 | Worm gear and worm detection adjustment device of electric power steering gear of automobile |
| CN204004199U (en) * | 2014-08-12 | 2014-12-10 | 浙江一机机床制造有限公司 | A kind of Worm and worm-wheel gearing |
| CN204387256U (en) * | 2014-12-26 | 2015-06-10 | 广州市昊志机电股份有限公司 | A kind of structure adjusting gap of worm |
| CN205745107U (en) * | 2016-05-19 | 2016-11-30 | 无锡凯能光伏设备有限公司 | A kind of novel adjustable clearance device for revolving and driving |
| CN206129991U (en) * | 2016-09-22 | 2017-04-26 | 浙江珠儿纳机械有限公司 | Worm gear and worm reducer |
| CN206889621U (en) * | 2016-12-14 | 2018-01-16 | 济南第一机床有限公司 | A kind of mechanical mechanism gap of worm adjusting apparatus |
| CN106884974A (en) * | 2017-04-06 | 2017-06-23 | 国电联合动力技术有限公司 | A kind of wind turbine generator system gear box lubricating system and its control method |
| CN107504133A (en) * | 2017-10-20 | 2017-12-22 | 台州椒星传动设备有限公司 | A kind of worm type of reduction gearing |
| CN108019494A (en) * | 2018-01-09 | 2018-05-11 | 台州椒星传动设备有限公司 | A kind of mechanism for axial adjusting of accurate retarding machine input shaft |
| CN208602557U (en) * | 2018-08-27 | 2019-03-15 | 华晨鑫源重庆汽车有限公司 | A kind of adjustable steering system power assisting device in gap |
| CN209705197U (en) * | 2019-04-18 | 2019-11-29 | 佛山市迪龙传动机械有限公司 | Gap of worm adjustment mechanism |
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| CN109882548A (en) | 2019-06-14 |
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