CN102425650B - Gear and rack transmission device capable of eliminating wearing clearance - Google Patents
Gear and rack transmission device capable of eliminating wearing clearance Download PDFInfo
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- CN102425650B CN102425650B CN201110357773.1A CN201110357773A CN102425650B CN 102425650 B CN102425650 B CN 102425650B CN 201110357773 A CN201110357773 A CN 201110357773A CN 102425650 B CN102425650 B CN 102425650B
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Abstract
The invention relates to a gear and rack transmission device capable of eliminating a wearing clearance. The device comprises a rack (17), a gear (16) and a frame (2), wherein the rack (17) is engaged with the gear (16); the gear (16) is mounted on a gear shaft (14); the middle part of the gear shaft (14) is rotatably mounted in an inner round hole of an eccentric sleeve (15); the side wall of the excircle of the eccentric sleeve (15) and the side wall of the inner round hole are eccentrically arranged with different centers of circle; the central axis of side wall of the excircle of the eccentric sleeve (15) and the central axis of the side wall of the inner round hole are mutually parallel; and the side wall of the excircle of the eccentric sleeve (15) is sleeved in a location hole on the frame (2). The invention aims at providing a gear and rack transmission device capable of eliminating a wearing clearance which is convenient to assemble, regulate and maintain, and can maintain high-efficiency transmission and transmission accuracy in a long term, reduce transmission noise, improve the service life of relevant parts and components and lower maintenance cost.
Description
Technical field
The present invention relates to a kind of rack and pinion drive of eliminating wearing clearance.
Background technique
Gear rack transmission has transmits the advantages such as distance, transferring power are large, but the gear in existing gear rack transmission in use weares and teares than being easier to, cause drive gap between the gear teeth to become large, transmission accuracy variation, noise improves, and transmission efficiency reduces, can cause meaningless energy loss thus, if equipment is keeped in repair, change abrased gear, can improve maintenance cost again.
Summary of the invention
The object of this invention is to provide a kind of be convenient to assembling, debugging and maintenance, can keep for a long time high efficiency transmission and transmission accuracy, reduce rotational noise, improve the working life of related components, reduce the rack and pinion drive of the wearing clearance eliminated of maintenance cost.
The rack and pinion drive of eliminating wearing clearance of the present invention, comprise tooth bar, gear and frame, rack and pinion is meshed, gear is arranged on gear shaft, the middle part of described gear shaft can be arranged in the interior circular hole of eccentric bushing rotationally, the cylindrical sidewall of eccentric bushing and interior circular hole sidewall are excentric eccentric setting, and the medial axis of the cylindrical sidewall of eccentric bushing and the medial axis of interior circular hole sidewall are parallel to each other, and the cylindrical sidewall sheath of eccentric bushing is contained in the positioning hole in described frame.
The rack and pinion drive of eliminating wearing clearance of the present invention, one end of wherein said eccentric bushing has flange, on flange, around the center of circle, be provided with the through hole of a plurality of long strips, eccentric bushing is fixedly linked by bolt and the described frame of the through hole through on flange, between described gear and described gear shaft, adopt key to be connected and fixed, the middle part of gear shaft adopts two bearings to be arranged in the interior circular hole of described eccentric bushing.
The rack and pinion drive of eliminating wearing clearance of the present invention, wherein said tooth bar is meshed with pinion, pinion is arranged on pinion axle, pinion axle and described gear shaft are set up in parallel, the middle part of pinion axle can be arranged in the interior circular hole of secondary eccentric bushing rotationally, cylindrical sidewall and the interior circular hole sidewall of secondary eccentric bushing are excentric eccentric setting, the medial axis of cylindrical sidewall and the medial axis of interior circular hole sidewall of secondary eccentric bushing are parallel to each other, and the cylindrical sidewall sheath of secondary eccentric bushing is contained in the positioning hole in described frame.
The rack and pinion drive of eliminating wearing clearance of the present invention, one end of wherein said secondary eccentric bushing has flange plate, on flange plate, around the center of circle, be provided with the through hole of a plurality of long strips, secondary eccentric bushing is fixedly linked by bolt and the described frame of the through hole through on flange plate, between described pinion and described pinion axle, adopt key to be connected and fixed, the middle part of pinion axle adopts two bearings to be arranged in the interior circular hole of described secondary eccentric bushing.
The rack and pinion drive of eliminating wearing clearance of the present invention, one end of wherein said gear shaft is set with left profile of tooth belt wheel, one end of described pinion axle is set with right profile of tooth belt wheel, left profile of tooth belt wheel is connected with active profile of tooth belt wheel transmission by synchronous cog belt with right profile of tooth belt wheel, initiatively profile of tooth belt wheel is sleeved on the pto＝power take-off of motor, and motor is arranged in described frame.
The rack and pinion drive of eliminating wearing clearance of the present invention, wherein the outer ring surface of the synchronous cog belt between described left profile of tooth belt wheel and right profile of tooth belt wheel matches with the circumferential surface of Idle wheel, Idle wheel can be arranged on the axis of guide rotationally, the axis of guide and briquetting are fixedly linked, briquetting is connected with one end of screw rod, the axis of screw rod is perpendicular to the outer ring surface of the synchronous cog belt between left profile of tooth belt wheel and right profile of tooth belt wheel, the middle part of screw rod is provided with spring bearer plate, on screw rod, between spring bearer plate and described briquetting, be set with pressure spring, the other end spinning of screw rod is on scaffold, scaffold and described frame are fixedly linked.
The rack and pinion drive of eliminating wearing clearance of the present invention, wherein the outer ring surface of the described synchronous cog belt between described left profile of tooth belt wheel and described active profile of tooth belt wheel matches with the circumferential surface of left reversing wheel, and the outer ring surface of the synchronous cog belt between described right profile of tooth belt wheel and active profile of tooth belt wheel matches with the circumferential surface of right reversing wheel.
The rack and pinion drive of eliminating wearing clearance of the present invention, one end of the wherein said axis of guide is arranged in the guiding groove in described frame, and the axis of guiding groove is parallel to the axis of described screw rod, and described pressure spring is belleville spring.
The rack and pinion drive of eliminating wearing clearance of the present invention, when mounted, can adjust by rotating eccentric sleeve the back lash of left gear and tooth bar, thereby improves installation precision, reduces rotational noise.After left gear weares and teares, also gear is continued to use in the back lash that can adjust wheel and rack by rotating eccentric sleeve, thereby can improve transmission efficiency and transmission accuracy, reduces rotational noise, improve the working life of related components, reduce maintenance cost.Therefore, the rack and pinion drive of eliminating wearing clearance of the present invention has is convenient to assembling, debugging and maintenance, can keep for a long time high efficiency transmission and transmission accuracy, reduces rotational noise, improves the working life of related components, reduces the feature of maintenance cost.
Below in conjunction with accompanying drawing, the rack and pinion drive of eliminating wearing clearance of the present invention is described in further detail.
Accompanying drawing explanation
Fig. 1 is the main pseudosection of eliminating the rack and pinion drive of wearing clearance of the present invention;
Fig. 2 is the right side view of Fig. 1.
Embodiment
As depicted in figs. 1 and 2, the rack and pinion drive of eliminating wearing clearance of the present invention, comprise tooth bar 17, gear 16 and frame 2, tooth bar 17 is meshed with gear 16, gear 16 is arranged on gear shaft 14, the middle part of gear shaft 14 can be arranged in the interior circular hole of eccentric bushing 15 rotationally, the cylindrical sidewall of eccentric bushing 15 and interior circular hole sidewall are excentric eccentric setting, the medial axis of the cylindrical sidewall of eccentric bushing 15 and the medial axis of interior circular hole sidewall are parallel to each other, and the cylindrical sidewall sheath of eccentric bushing 5 is contained in the positioning hole in frame 2.When mounted, can adjust by rotating eccentric sleeve 15 back lash of gear 16 and tooth bar 17, thereby improve installation precision, reduce rotational noise.After gear 16 weares and teares, also can adjust gear 16 by rotating eccentric sleeve 15 and continue to use gear 16 with the back lash of tooth bar 17, thereby can improve transmission efficiency and transmission accuracy, reduce rotational noise, improve the working life of related components, reduce maintenance cost;
One end of above-mentioned eccentric bushing 15 has flange, on flange, around the center of circle, be provided with the through hole of a plurality of long strips, eccentric bushing 15 is fixedly linked by bolt and the frame 2 of the through hole through on flange, between gear 16 and gear shaft 14, adopt key to be connected and fixed, the middle part of gear shaft 14 adopts two bearings to be arranged in the interior circular hole of eccentric bushing 15.
Above-mentioned tooth bar 17 is meshed with pinion (not shown in FIG.), pinion is arranged on pinion axle 20, pinion axle 20 is set up in parallel with gear shaft 14, the middle part of pinion axle 20 can be arranged in the interior circular hole of secondary eccentric bushing (not shown in FIG.) rotationally, cylindrical sidewall and the interior circular hole sidewall of secondary eccentric bushing are excentric eccentric setting, the medial axis of cylindrical sidewall and the medial axis of interior circular hole sidewall of secondary eccentric bushing are parallel to each other, and the cylindrical sidewall sheath of secondary eccentric bushing is contained in the positioning hole in frame 2.While adopting the transmission of Double-gear engage teeth, can allow and touch the tooth of tooth bar 17 after the teeth directional of pinion, allow and touch the tooth of tooth bar 17 before the teeth directional of gear 16, just can eliminate commutation drive gap, greatly improve the transmission accuracy of rack and pinion drive.In use, can adjust by revolute pair eccentric bushing the back lash of pinion and tooth bar 17.After pinion weares and teares, pinion is continued to use in the back lash that can adjust pinion and tooth bar 17 by revolute pair eccentric bushing, thereby improves the working life of related components, reduces maintenance cost.
One end of above-mentioned secondary eccentric bushing has flange plate (not shown in FIG.), on flange plate, around the center of circle, be provided with the through hole of a plurality of long strips, secondary eccentric bushing is fixedly linked by bolt and the frame 2 of the through hole through on flange plate, between pinion and pinion axle 20, adopt key to be connected and fixed, the middle part of pinion axle 20 adopts two bearings to be arranged in the interior circular hole of secondary eccentric bushing.
One end of said gear axle 14 is set with left profile of tooth belt wheel 4, one end of pinion axle 20 is set with right profile of tooth belt wheel 5, left profile of tooth belt wheel 4 is connected with 3 transmissions of active profile of tooth belt wheel by synchronous cog belt 1 with right profile of tooth belt wheel 5, initiatively profile of tooth belt wheel 3 is sleeved on the pto＝power take-off of motor 21, and motor 21 is arranged in frame 2.The outer ring surface of the synchronous cog belt 1 between left profile of tooth belt wheel 4 and right profile of tooth belt wheel 5 matches with the circumferential surface of Idle wheel 8, Idle wheel 8 can be arranged on the axis of guide 9 rotationally, the axis of guide 9 is fixedly linked with briquetting 10, briquetting 10 is connected with one end of screw rod 11, the axis of screw rod 11 is perpendicular to the outer ring surface of the synchronous cog belt 1 between left profile of tooth belt wheel 4 and right profile of tooth belt wheel 5, the middle part of screw rod 11 is provided with spring bearer plate 12, on screw rod 11, between spring bearer plate 12 and briquetting 10, be set with pressure spring 18, pressure spring 18 is belleville spring, the other end spinning of screw rod 11 is on scaffold 13, scaffold 13 is fixedly linked with frame 2.Rotary screw 11 can press to synchronous cog belt 1 by Idle wheel 8, thereby by synchronous cog belt 1 tensioning.In use, in the process that synchronous cog belt 1 is being used, occur loosening, pressure spring 18 can be by briquetting 10 tops to synchronous cog belt 1, briquetting 10 can promote the axis of guide 9, allow the axis of guide 9 towards synchronous cog belt 1 motion, the Idle wheel 8 being arranged on the axis of guide 9 will further press to synchronous cog belt 1, allows synchronous cog belt 1 remain tensioning state.
The outer ring surface of above-mentioned synchronous cog belt 1 between left profile of tooth belt wheel 4 and active profile of tooth belt wheel 3 matches with the circumferential surface of left reversing wheel 6, and the outer ring surface of the synchronous cog belt 1 between right profile of tooth belt wheel 5 and active profile of tooth belt wheel 3 matches with the circumferential surface of right reversing wheel 7.Left reversing wheel 6 and right reversing wheel 7 are set and can allow synchronous cog belt 1 keep tensioning state, and can improve the cornerite of 1 pair of left profile of tooth belt wheel 4 of synchronous cog belt or right profile of tooth belt wheel 5, thereby improve the bearing capacity of transmission.
One end of the above-mentioned axis of guide 9 can be arranged in the guiding groove 19 in frame 2, and the axis of guiding groove 19 is parallel to the axis of screw rod 11.In use, the bootable axis of guide 9 of guiding groove 19 is towards Idle wheel 8 motions.
Above-mentioned spring bearer plate 12 can be spinning at the middle part of screw rod 11, briquetting 10 is fixedly linked with one end of screw rod 11.In use, if need to adjust the pressure size of pressure spring 18, direct rotation spring pressing plate 12, and make screw rod 11 maintenances motionless, just can compress or loosen pressure spring 18.
Above-mentioned spring bearer plate 12 can be also the middle part that is fixed on screw rod 11, and briquetting 10 is connected with one end spinning of screw rod 11.During use, if need to adjust the pressure size of pressure spring 18, directly rotating screw bolt 11, allow one end of screw rod 11 enter or leave the motion of briquetting 10, just can compress or loosen pressure spring 18.
Embodiment recited above is described the preferred embodiment of the present invention; not the scope of the invention is limited; design under spiritual prerequisite not departing from the present invention; various distortion and improvement that the common engineers and technicians in related domain make technological scheme of the present invention, all should fall in the definite protection domain of claims of the present invention.
Claims (3)
1. can eliminate the rack and pinion drive of wearing clearance, comprise tooth bar (17), gear (16) and frame (2), tooth bar (17) is meshed with gear (16), gear (16) is arranged on gear shaft (14), it is characterized in that: the middle part of described gear shaft (14) can be arranged in the interior circular hole of eccentric bushing (15) rotationally, the cylindrical sidewall of eccentric bushing (15) and interior circular hole sidewall are excentric eccentric setting, the medial axis of the cylindrical sidewall of eccentric bushing (15) and the medial axis of interior circular hole sidewall are parallel to each other, the cylindrical sidewall sheath of eccentric bushing (15) is contained in the positioning hole in described frame (2),
One end of described eccentric bushing (15) has flange, on flange, around the center of circle, be provided with the through hole of a plurality of long strips, eccentric bushing (15) is fixedly linked by bolt and the described frame (2) of the through hole through on flange, between described gear (16) and described gear shaft (14), adopt key to be connected and fixed, the middle part of gear shaft (14) adopts two bearings to be arranged in the interior circular hole of described eccentric bushing (15);
Described tooth bar (17) is meshed with pinion, pinion is arranged on pinion axle (20), pinion axle (20) is set up in parallel with described gear shaft (14), the middle part of pinion axle (20) can be arranged in the interior circular hole of secondary eccentric bushing rotationally, cylindrical sidewall and the interior circular hole sidewall of secondary eccentric bushing are excentric eccentric setting, the medial axis of cylindrical sidewall and the medial axis of interior circular hole sidewall of secondary eccentric bushing are parallel to each other, and the cylindrical sidewall sheath of secondary eccentric bushing is contained in the positioning hole in described frame (2); While adopting the transmission of Double-gear engage teeth, allow and touch the tooth of tooth bar (17) after the teeth directional of pinion, allow and touch the tooth of tooth bar (17) before the teeth directional of gear (16);
One end of described secondary eccentric bushing has flange plate, on flange plate, around the center of circle, be provided with the through hole of a plurality of long strips, secondary eccentric bushing is fixedly linked by bolt and the described frame (2) of the through hole through on flange plate, between described pinion and described pinion axle (20), adopt key to be connected and fixed, the middle part of pinion axle (20) adopts two bearings to be arranged in the interior circular hole of described secondary eccentric bushing;
One end of described gear shaft (14) is set with left profile of tooth belt wheel (4), one end of described pinion axle (20) is set with right profile of tooth belt wheel (5), left profile of tooth belt wheel (4) is connected with the transmission of active profile of tooth belt wheel (3) by synchronous cog belt (1) with right profile of tooth belt wheel (5), initiatively profile of tooth belt wheel (3) is sleeved on the pto＝power take-off of motor (21), and motor (21) is arranged in described frame (2);
The outer ring surface that is positioned at the synchronous cog belt (1) between described left profile of tooth belt wheel (4) and right profile of tooth belt wheel (5) matches with the circumferential surface of Idle wheel (8), Idle wheel (8) can be arranged on the axis of guide (9) rotationally, the axis of guide (9) is fixedly linked with briquetting (10), briquetting (10) is connected with one end of screw rod (11), the axis of screw rod (11) is perpendicular to the outer ring surface that is positioned at the synchronous cog belt (1) between left profile of tooth belt wheel (4) and right profile of tooth belt wheel (5), the middle part of screw rod (11) is provided with spring bearer plate (12), on screw rod (11), be positioned between spring bearer plate (12) and described briquetting (10) and be set with pressure spring (18), the other end spinning of screw rod (11) is on scaffold (13), scaffold (13) is fixedly linked with described frame (2).
2. the rack and pinion drive of eliminating wearing clearance according to claim 1, it is characterized in that: the outer ring surface that is positioned at the described synchronous cog belt (1) between described left profile of tooth belt wheel (4) and described active profile of tooth belt wheel (3) matches with the circumferential surface of left reversing wheel (6), the outer ring surface that is positioned at the synchronous cog belt (1) between described right profile of tooth belt wheel (5) and active profile of tooth belt wheel (3) matches with the circumferential surface of right reversing wheel (7).
3. the rack and pinion drive of eliminating wearing clearance according to claim 2, it is characterized in that: one end of the described axis of guide (9) is arranged in the guiding groove (19) in described frame (2), the axis of guiding groove (19) is parallel to the axis of described screw rod (11), and described pressure spring (18) is belleville spring.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201110357773.1A CN102425650B (en) | 2011-11-14 | 2011-11-14 | Gear and rack transmission device capable of eliminating wearing clearance |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201110357773.1A CN102425650B (en) | 2011-11-14 | 2011-11-14 | Gear and rack transmission device capable of eliminating wearing clearance |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN102425650A CN102425650A (en) | 2012-04-25 |
| CN102425650B true CN102425650B (en) | 2014-08-13 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201110357773.1A Active CN102425650B (en) | 2011-11-14 | 2011-11-14 | Gear and rack transmission device capable of eliminating wearing clearance |
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| CN (1) | CN102425650B (en) |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103939592A (en) * | 2014-04-10 | 2014-07-23 | 沈阳广达科技发展有限公司 | Double gear and rack drive synchronous belt automatic anti-backlash device |
| CN108006202A (en) * | 2017-12-27 | 2018-05-08 | 北京京诚之星科技开发有限公司 | A kind of gear-box |
| CN108999954A (en) * | 2018-07-30 | 2018-12-14 | 黄炳康 | A kind of rack-and-pinion installation shell |
| CN109368440B (en) * | 2018-10-16 | 2020-11-27 | 日立电梯（中国）有限公司 | Gear self-driven elevator |
| CN109296718A (en) * | 2018-12-04 | 2019-02-01 | 四川宏华石油设备有限公司 | A kind of guiding device |
| CN109681623A (en) * | 2019-03-07 | 2019-04-26 | 青岛麦科三维测控技术股份有限公司 | A kind of gap eliminator for rack pinion |
| CN110626966B (en) * | 2019-09-27 | 2021-10-26 | 徐州重型机械有限公司 | Slewing mechanism, method for adjusting backlash and crane |
| CN113565950B (en) * | 2021-08-09 | 2022-11-15 | 无锡京华重工装备制造有限公司 | Backlash eliminating structure with meshing clearance measuring function for C shaft of vertical lathe |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4680981A (en) * | 1984-02-27 | 1987-07-21 | Trw Cam Gears Limited | Rack and pinion gear and a method of assembling such a gear |
| CN2522674Y (en) * | 2001-11-30 | 2002-11-27 | 张仁文 | Back clearance removing structure of double pinion and gear row engagement |
| CN201872015U (en) * | 2010-10-26 | 2011-06-22 | 福建达宇重型数控机床有限公司 | Tail frame transmission mechanism for roll grinder |
| CN201992029U (en) * | 2011-05-09 | 2011-09-28 | 上海三一精机有限公司 | Gear rack anti-backlash adjusting mechanism |
| CN202349134U (en) * | 2011-11-14 | 2012-07-25 | 吴瑜华 | Gear and rack transmission device capable of eliminating wear clearance |
-
2011
- 2011-11-14 CN CN201110357773.1A patent/CN102425650B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4680981A (en) * | 1984-02-27 | 1987-07-21 | Trw Cam Gears Limited | Rack and pinion gear and a method of assembling such a gear |
| CN2522674Y (en) * | 2001-11-30 | 2002-11-27 | 张仁文 | Back clearance removing structure of double pinion and gear row engagement |
| CN201872015U (en) * | 2010-10-26 | 2011-06-22 | 福建达宇重型数控机床有限公司 | Tail frame transmission mechanism for roll grinder |
| CN201992029U (en) * | 2011-05-09 | 2011-09-28 | 上海三一精机有限公司 | Gear rack anti-backlash adjusting mechanism |
| CN202349134U (en) * | 2011-11-14 | 2012-07-25 | 吴瑜华 | Gear and rack transmission device capable of eliminating wear clearance |
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| Publication number | Publication date |
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| CN102425650A (en) | 2012-04-25 |
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Effective date of registration: 20170605 Address after: 100191 No. 14 Garden North Road, Beijing, Haidian District Patentee after: Beijing peace Machine Technology Co., Ltd. Address before: 100026 Beijing city Chaoyang District shueiduei 18 Building 2 unit 511 Patentee before: Wu Yuhua |