CN103939577A - Backlash adjusting device and method of gear-rack transmission pair - Google Patents
Backlash adjusting device and method of gear-rack transmission pair Download PDFInfo
- Publication number
- CN103939577A CN103939577A CN201410145114.5A CN201410145114A CN103939577A CN 103939577 A CN103939577 A CN 103939577A CN 201410145114 A CN201410145114 A CN 201410145114A CN 103939577 A CN103939577 A CN 103939577A
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- Prior art keywords
- adjustment piece
- gear
- tooth bar
- rack
- adjusting device
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- 230000005540 biological transmission Effects 0.000 title claims abstract description 86
- 238000000034 method Methods 0.000 title claims abstract description 15
- 230000006835 compression Effects 0.000 description 3
- 238000007906 compression Methods 0.000 description 3
- 230000007613 environmental effect Effects 0.000 description 2
- 230000007774 longterm Effects 0.000 description 2
- 210000001138 tear Anatomy 0.000 description 2
- 230000000694 effects Effects 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 230000009347 mechanical transmission Effects 0.000 description 1
- 238000007634 remodeling Methods 0.000 description 1
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16H—GEARING
- F16H55/00—Elements with teeth or friction surfaces for conveying motion; Worms, pulleys or sheaves for gearing mechanisms
- F16H55/02—Toothed members; Worms
- F16H55/26—Racks
- F16H55/28—Special devices for taking up backlash
- F16H55/283—Special devices for taking up backlash using pressure yokes
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- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Transmission Devices (AREA)
- Gears, Cams (AREA)
Abstract
The invention provides a gear-rack transmission pair and a backlash adjusting device and method of the gear-rack transmission pair. The backlash adjusting device comprises a lower transmission part, a first adjusting piece and a second adjusting piece. The lower transmission part is arranged below a rack. The first adjusting piece is connected and placed between the rack and the lower transmission part and can be lengthened and shortened, so that the vertical distance between the rack and a gear is adjusted. The second adjusting piece is connected and placed between the rack and the lower transmission part and can be lengthened and shortened, so that the horizontal distance between the rack and the gear is adjusted. During a backlash adjusting process, when a backlash is too large, a user loosens the first adjusting piece first, then the second adjusting piece is adjusted, after a position is proper by adjusting, the first adjusting piece is adjusted, so that the first adjusting piece is tightly connected with the rack in an butting mode and is fixed, the first adjusting piece bears pressing stress, the second adjusting piece bears pulling stress, so that the first adjusting piece and the second adjusting piece both bear pre-tightening force, accordingly, thread connecting loosening is effectively avoided, and a gap of the gear-rack transmission pair can be adjusted quickly and conveniently.
Description
Technical field
The present invention relates to mechanical transmission, relate in particular to a kind of lateral clearance adjusting device and method of gear rack transmission.
Background technique
Particularly in the installation and using process of pin rack transmission, there is unavoidably following situation at gear rack transmission:
1. after wheel and rack assembling, physical dimension is larger, cannot meet transportation demand, and separately transport is assembled behind scene again, because equipment erecting bed lacks professional tool, causes equipment adjustment difficulty;
2. the secondary long-term work of rack-driving, there are wearing and tearing in gear teeth face and tooth bar, causes the sideshake of transmission to increase, and in the time of the forward and reverse running of gear, will produce larger impulsive load, not only affects the working life of device, also can produce very large noise.
Summary of the invention
The object of the invention is to propose a kind of lateral clearance adjusting device and method of gear rack transmission, the problem of bringing to solve the wearing and tearing of gear teeth face that prior art exists and pin rack.
For achieving the above object, the present invention proposes a kind of lateral clearance adjusting device of gear rack transmission, and for adjusting the sideshake of pitch wheel and tooth bar, described tooth bar is arranged on the below of described gear, and described lateral clearance adjusting device comprises:
Bottom transmission part, is arranged on the below of described tooth bar;
The first adjustment piece, connects and between described tooth bar and described bottom transmission part, and can extend and shorten to adjust the perpendicular distance of described tooth bar with respect to described gear; And
The second adjustment piece, connects and arranges obliquely between described tooth bar and described bottom transmission part, and can extend and shorten to adjust perpendicular distance and the horizontal position of described tooth bar with respect to described gear.
In an embodiment of the lateral clearance adjusting device of gear rack transmission of the present invention, described tooth bar is pin rack, described pin rack comprises cotter way and the parallel multiple pins that are plugged in described cotter way, one end of described the second adjustment piece is connected in the sidewall outside of described cotter way, and described the first adjustment piece is connected to the bottom of described cotter way.
In an embodiment of the lateral clearance adjusting device of gear rack transmission of the present invention, described the second adjustment piece is and is in tilted layout with respect to described gear rack and described bottom transmission part.
In an embodiment of the lateral clearance adjusting device of gear rack transmission of the present invention, described the first adjustment piece comprises:
Vertical adjusting nut, is fixedly connected on the below of described pin rack; And
The vertical screw rod of adjusting, be fixedly connected on the top of described bottom transmission part, and be threaded with described vertical adjusting nut, by rotating described vertical adjusting nut, described vertical adjusting nut can change with described vertical adjustment screw flight screwing length, and described the first adjustment piece can be elongated or shortened.
In an embodiment of the lateral clearance adjusting device of gear rack transmission of the present invention, described the second adjustment piece comprises:
Top stay-bolt, its one end is fixedly connected on described pin rack;
Bottom stay-bolt, its one end is fixedly connected on described bottom transmission part; And
Length adjustment nut, the two ends of described length adjustment nut have respectively screw section, described two screw sections are connected in respectively the other end of described top stay-bolt and the other end of described bottom stay-bolt, the length of thread engagement of the length of thread engagement of described length adjustment nut and described top stay-bolt and described length adjustment nut and described bottom stay-bolt can change, and described the second adjustment piece can be elongated or shortened.
In an embodiment of the lateral clearance adjusting device of gear rack transmission of the present invention, the number of described the first adjustment piece is four, before and after described the first adjustment piece is along the axial direction of described gear, two arrange and put, and described the first adjustment piece in each row is along the vertical center line symmetry of described gear.
In an embodiment of the lateral clearance adjusting device of gear rack transmission of the present invention, the number of described the second adjustment piece is four, and is positioned between two the same side of described pin rack and described bottom transmission part.
In an embodiment of the lateral clearance adjusting device of gear rack transmission of the present invention, described the second adjustment piece that is positioned at described pin rack and transmission part both sides, described bottom is symmetrical.
The present invention also proposes a kind of gear rack transmission with lateral clearance adjusting device, comprising:
Tooth bar;
Gear, is arranged on the top of described tooth bar and engages with described tooth bar;
Bottom transmission part, is arranged on the below of described tooth bar;
The first adjustment piece, connects and between described tooth bar and described bottom transmission part, and can extend and shorten to adjust the perpendicular distance of described tooth bar with respect to described gear; And
The second adjustment piece, connects and is arranged at obliquely between described tooth bar and described bottom transmission part, and can extend and shorten to adjust perpendicular distance and the horizontal position of described tooth bar with respect to described gear.
The present invention also proposes a kind of sideshake adjusting method of gear rack transmission, applies the lateral clearance adjusting device of above-mentioned gear rack transmission, and described sideshake adjusting method comprises:
The first adjustment piece and tooth bar are disengaged;
Adjust described the second adjustment piece, to change perpendicular distance and the horizontal position of described tooth bar with respect to described gear;
Adjust described the first adjustment piece and make it to be subject to the pressure stress from described tooth bar, and make described the second adjustment piece be subject to the tensile stress from described tooth bar; And
Fastening described the first adjustment piece, fixes described the first adjustment piece length.
Adjust in the process of sideshake in the present invention, when sideshake excessive, user first unclamps the first adjustment piece, then adjusts the second adjustment piece, after position adjustment is suitable, adjusting the first adjustment piece makes it tight butt tooth bar and fixes the first adjustment piece, make the first adjustment piece compression chord, and the second adjustment piece tension stress, such the first adjustment piece and the second adjustment piece have all been subject to pretightening force, thereby effectively prevent the loosening of scyewed joint, can adjust quickly and easily the gap of gear rack transmission.
Brief description of the drawings
The lateral clearance adjusting device plan view of Fig. 1 pin rack transmission;
The lateral clearance adjusting device left view of Fig. 2 pin rack transmission.
Embodiment
The lateral clearance adjusting device of gear rack transmission of the present invention is described below in conjunction with accompanying drawing.Wherein, this lateral clearance adjusting device can be applied to gear rack transmission, and it is more severe to be preferably applied to Environmental Conditions condition, and more serious pin rack transmission weares and teares.The following drawings describes as an example of pin rack transmission example.
Shown in Fig. 1 and Fig. 2, be respectively plan view and the left view of the pin rack transmission in one embodiment of the invention with lateral clearance adjusting device.As depicted in figs. 1 and 2, the pin rack transmission that has a lateral clearance adjusting device comprises pin rack 10, gear 20, bottom transmission part 30, the first adjustment piece 40 and the second adjustment piece 50.Wherein, gear 20 is arranged at the top of pin rack 10, and pin rack 10 comprises cotter way 11 and is set in parallel in many pins 12 in cotter way 11.Gear 20 can rotate and engage with many pins 12, thereby realizes pin tooth transmission.
The first adjustment piece 40 is vertically disposed adjustment piece, comprises that vertical adjusting nut 41 comprises top stay-bolt 51, length adjustment nut 52 and bottom stay-bolt 53 with vertical adjustment screw rod 42, the second adjustment pieces 50.Wherein:
Pin rack 10 and gear 20 are intermeshing, between pin rack 10 and bottom transmission part 30, are connected with the second adjustment piece 50 by the first adjustment piece 40.
The first adjustment piece 40 is between pin rack 10 and bottom transmission part 30, wherein vertical adjusting nut 41 is arranged on the bottom of pin rack 10, the vertical screw rod 42 of adjusting is arranged on the top of bottom transmission part 30 and can fixes with the top of bottom transmission part 30, vertical adjusting nut 41 spins together by screw thread with vertical adjustment screw rod 42, by rotating vertical adjusting nut 41, can make vertically to adjust screw rod 42 lengthens or reduces with the length of thread engagement of vertical adjusting nut 41, thereby (the B direction shown in Fig. 1) makes pin rack 10 relatively rise or fall accordingly in the vertical direction, thereby eliminate the down suction of pin rack 10 and gear 20.
In the present embodiment, shown in Fig. 1 and Fig. 2, the number of the first adjustment piece 40 is four, and two the first adjustment pieces 40 two arrange and put before and after being along the axial direction of gear 20, and the first adjustment piece in each row is roughly along the vertical center line symmetry of gear 20.In other embodiments, the first adjustment piece 40 can be also other numbers, and the present invention is not as limit.
The second adjustment piece 50 is obliquely installed between pin rack 10 and bottom transmission part 30, herein " inclination " refer to the second adjustment piece 50 neither vertically arrange, also non-flatly arrange.One end of its middle and upper part stay-bolt 51 is connected in pin rack 10 rotationally, one end of bottom stay-bolt 53 is connected in bottom transmission part 30 rotationally, the two ends of length adjustment nut 52 have respectively screw section, and two screw sections are threadedly connected to respectively the other end of top stay-bolt 51 and the other end of bottom stay-bolt 53.Wherein, rotation length adjustment nut 52 can change one of them screw section of length adjustment nut 52 and the length of thread engagement of top stay-bolt 51, and changes another screw section of length adjustment nut 52 and the length of thread engagement of bottom stay-bolt 53.,, by rotation length adjustment nut 52, can change the length of the second adjustment piece 50, thereby realize micro-horizontal position adjustment.
In the process of adjustment sideshake, when sideshake excessive, user first makes the first adjustment piece 40 disengage with tooth bar 10, then adjust the length adjustment nut 52 of the second adjustment piece 50, the second adjustment piece 50 is extended, after position adjustment is suitable, upwards extend the first adjustment piece 40, make the tight butt pin rack 10 of the first adjustment piece 40, and fix the first adjustment piece 40, make the first adjustment piece 40 compression chords, and the second adjustment piece 50 tension stress, such the first adjustment piece and the second adjustment piece have all been subject to pretightening force, thereby have effectively prevented the loosening of scyewed joint.From the above, the second adjustment piece 50 just can be roughly by suitable the position adjustment of pin rack 10.The first adjustment piece 40 is also played a supporting role in playing corrective action.
In the present embodiment, as shown in Figure 2, pin rack 10 and bottom transmission part 30 have identical width, shown in Fig. 1 and Fig. 2, the number of the second adjustment piece 50 is four, it is positioned at the same side of pin rack 10 and bottom transmission part 30 between two, and is positioned at pin rack 10 and transmission part 30 both sides the second adjustment pieces 50 in bottom are preferably set to symmetrically, to facilitate adjusting.But in other embodiments, the number of the second adjustment piece 50 and set-up mode can be not construed as limiting.
After the sideshake adjustment between pin rack 10 and gear 20 is suitable, tighten the length adjustment nut 52 of each the second adjustment piece 50, make pin rack 10 and bottom transmission part 30 form a rigidly connected entirety, so just realized the quick adjustment of pin rack transmission sideshake.
In sum, adjust in the process of sideshake in the present invention, when sideshake excessive, user first unclamps the first adjustment piece, then adjust the second adjustment piece, after position adjustment is suitable, adjusting the first adjustment piece makes it tight butt pin rack and fixes the first adjustment piece, make the first adjustment piece compression chord, and the second adjustment piece tension stress, such the first adjustment piece and the second adjustment piece have all been subject to pretightening force, thereby have effectively prevented the loosening of scyewed joint, the gap of adjusting pin rack-driving pair quickly and easily.
In addition, no matter be in the time that equipment is installed for the first time, or occur after wearing and tearing in equipment long-term work, lateral clearance adjusting device provided by the invention can be adjusted in time efficiently to the work sideshake of pin rack transmission, make pin rack transmission remain suitable sideshake level, reduce impulsive load, reduce noise, extension device working life.
In addition, the present invention can be applied to general gear rack transmission, more preferably be applied to pin rack transmission, pin rack transmission General Requirements precision is not high, and environmental conditions is more severe, wear and tear more serious, so it is more urgent to adjust the demand of sideshake, that is to say, lateral clearance adjusting device of the present invention is applied in has more outstanding effect on pin rack transmission.
Although described the present invention with reference to several exemplary embodiments, should be appreciated that term used is explanation and exemplary and nonrestrictive term.Because can specifically implementing in a variety of forms, the present invention do not depart from spirit of the present invention or essence, so be to be understood that, above-described embodiment is not limited to any aforesaid details, and explain widely in the spirit and scope that should limit in claims, therefore fall into whole variations in claim or its equivalent scope and remodeling and all should be claims and contain.
Claims (10)
1. the lateral clearance adjusting device of a gear rack transmission, be used for adjusting the sideshake of pitch wheel (20) and tooth bar (10), described tooth bar (10) is arranged on the below of described gear (20), it is characterized in that, described lateral clearance adjusting device comprises:
Bottom transmission part (30), is arranged on the below of described tooth bar (10);
The first adjustment piece (40), connect and be positioned between described tooth bar (10) and described bottom transmission part (30), and can extend and shorten to adjust the perpendicular distance of described tooth bar (10) with respect to described gear (20); And
The second adjustment piece (50), connect and be arranged at obliquely between described tooth bar (10) and described bottom transmission part (30), and can extend and shorten to adjust perpendicular distance and the horizontal position of described tooth bar (10) with respect to described gear (20).
2. the lateral clearance adjusting device of gear rack transmission as claimed in claim 1, it is characterized in that, described tooth bar (10) is pin rack, described pin rack comprises cotter way (11) and the parallel multiple pins (12) that are plugged in described cotter way (11), one end of described the second adjustment piece (50) is connected in the sidewall outside of described cotter way (11), and described the first adjustment piece (40) is connected to the bottom of described cotter way (11).
3. the lateral clearance adjusting device of gear rack transmission as claimed in claim 2, is characterized in that, described the second adjustment piece (50) is and is in tilted layout with respect to described pin rack (10) and described bottom transmission part (30).
4. the lateral clearance adjusting device of gear rack transmission as claimed in claim 2, is characterized in that, described the first adjustment piece (40) comprising:
Vertical adjusting nut (41), is fixedly connected on the below of described pin rack (10); And
The vertical screw rod (42) of adjusting, be fixedly connected on the top of described bottom transmission part (30), and be threaded with described vertical adjusting nut (41), by rotating described vertical adjusting nut (41), described vertical adjusting nut (41) can change with the length of thread engagement of described vertical adjustment screw rod (42), and described the first adjustment piece (40) can be elongated or shortened.
5. the lateral clearance adjusting device of gear rack transmission as claimed in claim 2, is characterized in that, described the second adjustment piece (50) comprising:
Top stay-bolt (51), its one end is fixedly connected on described pin rack (10);
Bottom stay-bolt (53), its one end is fixedly connected on described bottom transmission part (30); And
Length adjustment nut (52), the two ends of described length adjustment nut (52) have respectively screw section, described two screw sections are connected in respectively the other end of described top stay-bolt (51) and the other end of described bottom stay-bolt (53), described length adjustment nut (52) can change with the length of thread engagement of described bottom stay-bolt (53) with length of thread engagement and the described length adjustment nut (52) of described top stay-bolt (51), and described the second adjustment piece (50) can be elongated or shortened.
6. the lateral clearance adjusting device of gear rack transmission as claimed in claim 2, it is characterized in that, the number of described the first adjustment piece (40) is four, before and after described the first adjustment piece (40) is along the axial direction of described gear (20), two arrange and put, and described the first adjustment piece (40) in each row is arranged symmetrically with along the vertical center line of described gear (20).
7. the lateral clearance adjusting device of gear rack transmission as claimed in claim 2, it is characterized in that, the number of described the second adjustment piece (50) is four, and is positioned between two the same side of described pin rack (10) and described bottom transmission part (30).
8. the lateral clearance adjusting device of gear rack transmission as claimed in claim 7, it is characterized in that, described the second adjustment piece (50) that is positioned at described pin rack (10) and described bottom transmission part (30) both sides is symmetrical.
9. a gear rack transmission with lateral clearance adjusting device, is characterized in that, comprising:
Tooth bar (10);
Gear (20), is arranged on the top of described tooth bar (10) and engages with described tooth bar (10);
Bottom transmission part (30), is arranged on the below of described tooth bar (10);
The first adjustment piece (40), connect and be positioned between described tooth bar (10) and described bottom transmission part (30), and can extend and shorten to adjust the perpendicular distance of described tooth bar (10) with respect to described gear (20); And
The second adjustment piece (50), connect and be arranged at obliquely between described tooth bar (10) and described bottom transmission part (30), and can extend and shorten to adjust perpendicular distance and the horizontal position of described tooth bar (10) with respect to described gear (20).
10. a sideshake adjusting method for gear rack transmission, the lateral clearance adjusting device of the gear rack transmission of application as described in any one in claim 1-8, is characterized in that, described sideshake adjusting method comprises:
The first adjustment piece (40) and tooth bar (10) are disengaged;
Adjust described the second adjustment piece (50), to change perpendicular distance and the horizontal position of described tooth bar (10) with respect to described gear (20);
Adjust described the first adjustment piece (40), make it to be subject to the pressure stress from described tooth bar (10), and make described the second adjustment piece (50) be subject to the tensile stress from described tooth bar (10); And
Fastening described the first adjustment piece (40), fixes described the first adjustment piece (40) length.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410145114.5A CN103939577B (en) | 2014-04-11 | 2014-04-11 | The lateral clearance adjusting device of rack pinion pair and method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410145114.5A CN103939577B (en) | 2014-04-11 | 2014-04-11 | The lateral clearance adjusting device of rack pinion pair and method |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN103939577A true CN103939577A (en) | 2014-07-23 |
| CN103939577B CN103939577B (en) | 2016-04-13 |
Family
ID=51187390
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410145114.5A Expired - Fee Related CN103939577B (en) | 2014-04-11 | 2014-04-11 | The lateral clearance adjusting device of rack pinion pair and method |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN103939577B (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106845046A (en) * | 2017-04-14 | 2017-06-13 | 东北大学 | Straight spur gear wear extent computational methods |
| CN110562317A (en) * | 2019-08-30 | 2019-12-13 | 扬州华昌汽车电器有限公司 | rack supporting structure of automobile commutator |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3572158A (en) * | 1968-08-30 | 1971-03-23 | Cam Gears Ltd | Resiliently deformable rack bar support for rack and pinion assembly |
| EP0039154A1 (en) * | 1980-04-28 | 1981-11-04 | CAM GEARS Limited | A bearing assembly |
| EP1352807A2 (en) * | 2002-04-13 | 2003-10-15 | Mando Corporation | Vehicle steering system having rack bar supporting apparatus |
| CN101410288A (en) * | 2006-04-04 | 2009-04-15 | 蒂森克鲁伯普雷斯塔转向技术有限公司 | Rack and pinion steering gear with automatic adjustment of the thrust element |
| CN201992029U (en) * | 2011-05-09 | 2011-09-28 | 上海三一精机有限公司 | Gear rack anti-backlash adjusting mechanism |
| CN203082167U (en) * | 2012-12-26 | 2013-07-24 | 王俊峰 | Elevator gear rack transmission mechanism and adjustable elastic backrest wheel device |
-
2014
- 2014-04-11 CN CN201410145114.5A patent/CN103939577B/en not_active Expired - Fee Related
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3572158A (en) * | 1968-08-30 | 1971-03-23 | Cam Gears Ltd | Resiliently deformable rack bar support for rack and pinion assembly |
| EP0039154A1 (en) * | 1980-04-28 | 1981-11-04 | CAM GEARS Limited | A bearing assembly |
| EP1352807A2 (en) * | 2002-04-13 | 2003-10-15 | Mando Corporation | Vehicle steering system having rack bar supporting apparatus |
| CN101410288A (en) * | 2006-04-04 | 2009-04-15 | 蒂森克鲁伯普雷斯塔转向技术有限公司 | Rack and pinion steering gear with automatic adjustment of the thrust element |
| CN201992029U (en) * | 2011-05-09 | 2011-09-28 | 上海三一精机有限公司 | Gear rack anti-backlash adjusting mechanism |
| CN203082167U (en) * | 2012-12-26 | 2013-07-24 | 王俊峰 | Elevator gear rack transmission mechanism and adjustable elastic backrest wheel device |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106845046A (en) * | 2017-04-14 | 2017-06-13 | 东北大学 | Straight spur gear wear extent computational methods |
| CN106845046B (en) * | 2017-04-14 | 2019-10-01 | 东北大学 | Straight spur gear abrasion loss calculation method |
| CN110562317A (en) * | 2019-08-30 | 2019-12-13 | 扬州华昌汽车电器有限公司 | rack supporting structure of automobile commutator |
| CN110562317B (en) * | 2019-08-30 | 2022-01-07 | 扬州华昌汽车电器有限公司 | Rack supporting structure of automobile commutator |
Also Published As
| Publication number | Publication date |
|---|---|
| CN103939577B (en) | 2016-04-13 |
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