CN101424327B - Drive assembly for stairs climbing wheelchair and pinion and rack set thereof - Google Patents
Drive assembly for stairs climbing wheelchair and pinion and rack set thereof Download PDFInfo
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- CN101424327B CN101424327B CN2008101531816A CN200810153181A CN101424327B CN 101424327 B CN101424327 B CN 101424327B CN 2008101531816 A CN2008101531816 A CN 2008101531816A CN 200810153181 A CN200810153181 A CN 200810153181A CN 101424327 B CN101424327 B CN 101424327B
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Abstract
The invention provides a transmission component for stairs climbing wheelchairs, as well as a gear and rack set thereof. The invention belongs to a transmission component for stairs climbing equipment, and particularly applies to a wheelchair transmission component moving in a straight line along an inclined track and in a curve along a steering track. The transmission component for stairs climbing wheelchairs comprises a transmission gear and a transmission rack, wherein the transmission rack is arranged on a track which can be fixed with stairs, and the gear is arranged on a fixed box capable of installing the wheelchair through a main transmission shaft and mutually meshes with the transmission rack on the track. In the gear and rack set, the gear consists of a roller wheel and movable teeth arranged on the roller wheel, and the movable teeth consist of a mandrel fixedly arranged on the roller wheel and a toothed sleeve which is sleeved on the mandrel and can rotate around the mandrel. The transmission component can effectively improve the steadiness degree of wheelchair transmission operation and the safety of the stairs climbing wheelchairs.
Description
Technical field
The invention belongs to the dirivig member of stairs climbing equipment, especially be applicable to along the inclined plane linear movement and along the wheelchair transmitting assemblies that turns to the trajective curve operation.
Background technique
Known technology can be realized gear, the rackwork of curve transmission as disclosed Chinese patent 200510010262.7.Relate to a kind of gear, tooth bar transmission.It has solved traditional gear, tooth bar transmission middle rack can only extend along rectilinear direction, can not the crooked problem that is provided with.It is made up of gear mass and tooth bar body, gear mass is made up of wheel disc and several gear teeth, the outer end diameter of the gear teeth of " post " shape is less than diameter at butt end, the end face of the butt of the gear teeth be fixed on the circumferential surface of wheel disc and the gear teeth perpendicular to the circumferential surface of wheel disc, several gear teeth evenly distribute along the circumferencial direction of wheel disc, the plain line of the profile of envelope gear teeth outer round surface is the involute shape, length direction is that its length direction of working surface upper edge of the tooth bar body of curved shape evenly has several cone shape holes, each cone shape hole is perpendicular to the working surface of this cone shape hole position, and the distance between two adjacent conical holes is corresponding with the distance between two adjacent teeth.The present invention is needed the device of motion of space curve that driving mechanism is provided.
And for example disclosed Chinese patent 98811867.X proposes a kind of motor-driven stair climbing device and is used for transporting utensil and article, especially carries no locomotor activity people's wheelchair, wherein, wheelchair releasably is fixed on the stairway elevator systems and mainly has a stable framework.Has a power source in the framework, a live axle, a driving-controlling device, acquisition sensor, sensor and a lifting gear that is generally used for stair.Wherein, the feature of stairway elevator systems is, be provided with a support device, this support device is supported on one of following stairway step, stairway elevator systems and wheelchair and the total centre of gravity that do not have a locomotor activity people at roller or support device between the strong point on the stairway step.
Disclosed for another example Chinese patent 200610008065.6 is disclosed to be a kind of conveying arrangement of stair climbing, comprise frame, wheel, stairs climbing device, drive the motor and the transmission device of stairs climbing device, described stairs climbing device comprises symmetrical parallel setting and crank and the supporting element controlled by live axle by motor, this live axle is parallel to the center line of described travel wheel, described crank one end is fixedly connected on described live axle, the other end is articulated in described supporting element, cooperate frame after low step is raised to the upper level step by this supporting element and crank, crank takes supporting element to the upper level step.And the ratchet locking mechanism is set on live axle.The present invention is simple in structure and can reliably lock, and uses safe and reliablely, and applied range can be used for the go-cart of wheelchair or transportation goods etc.
Known drive mechanisms is carried generally need combine by plural plane feedway at three-dimensional location and is realized the transmission purpose, thereby the device structure complexity, and kinetic force consumption is big, and the manufacture cost height is the difficult problem that industry needs to be resolved hurrily always.
Particularly the gear in the known drive mechanisms, rack configurations can not adapt to the transmission of stairs climbing wheelchairs, when wheelchair when turning to trajective curve when operation or run into slight obstruction, wheelchair always occurs can not steadily parallel problem, thereby directly has influence on the seat person's that takes advantage of the wheelchair safety.The researcher finds that this mainly is because known gear, rack configurations theoretical operation work in transmission process is the face contact, thereby causes wheel and rack and violate anti-problem, directly influences the stationarity of driving mechanism.
Summary of the invention
This case problem to be solved is to overcome the defective that aforementioned techniques exists, and provide a kind of transmitting assemblies of simple in structure, cheap for manufacturing cost, safe and reliable stairs climbing wheelchairs, be specially adapted to stair-climbing wheel chair, make it both can be along inclined plane linear movement stably, also can be along turning to track curve motion stably.
The present invention is realized by following technological scheme: a kind of transmitting assemblies of stairs climbing wheelchairs, comprise driving gear and tooth bar, and wherein, have driving rack on the track, this track can install with stair; Gear is installed on the static housing by main drive shaft, and becomes intermeshing make to install with driving rack on the track; Gear is installed by assembly unit, and described assembly unit has the mounting plate that can install with static housing, and the bottom of this mounting plate is provided with and can holds the gear assembly department that main drive shaft and gear assemble; The top of mounting plate is provided with the transmission group pressure roller that can press the track upper limb, and this pressure roller is installed by bearing pin, and pressure roller becomes and can assemble around the mode that bearing pin rotates;
But the bottom roller group is made up of two movable roll that become the support mode to install with second guide rail; The upper roller group goes up pressure roller by two to be formed, and this upper roller group becomes to cooperate the embedding of bottom roller group to live second guide rail with second guide rail mode is installed and formed the embedding mouth; Have one three roller roller in the upper roller group, this three rollers roller becomes the configuration of trigonometrical point position to be assembled into three roller rollers by three kinks by link.
The present invention can also further be realized by following technological scheme:
The transmitting assemblies of aforesaid stairs climbing wheelchairs wherein, also has accessory part, and this accessory part is packed in and the corresponding position of transmitting assemblies by static housing, and this accessory part is made up of second guide rail and bottom roller group, upper roller group; This bottom roller group and upper roller group constitute the embedding mouth that holds the second guide rail process.
The transmitting assemblies of aforesaid stairs climbing wheelchairs, wherein, described gear is made up of roller bearing wheel and movable tooth, and this activity tooth is installed on the described roller bearing wheel; Described movable tooth is made of the mandrel and the tooth cover that are packed on the roller bearing wheel, and this tooth cover is assembling around the mode that mandrel rotates.
The transmitting assemblies of aforesaid stairs climbing wheelchairs, wherein, described tooth cover is swelling-waist shape, its any bus is the evagination camber line with default radian.
The transmitting assemblies of aforesaid stairs climbing wheelchairs, wherein, the arc length between the adjacent movable tooth equals or is slightly larger than or is slightly less than the between cog centre distance of tooth bar.
The transmitting assemblies of aforesaid stairs climbing wheelchairs, wherein, the default radian value of the evagination camber line of described tooth cover is the R32-38 millimeter.
The transmitting assemblies of aforesaid stairs climbing wheelchairs, wherein, described movable tooth is uniform to be installed on this roller bearing wheel, and the roller bearing wheel is provided with the movable tooth pilot hole of five equilibrium, has the prepsetting gap amount between the mandrel of this activity tooth and the tooth cover.
The transmitting assemblies of aforesaid stairs climbing wheelchairs, wherein, the ratio of the axial length H of the movable tooth cover on the width of described tooth bar and the gear is 1: 1.3; The default radian value of the evagination camber line of described tooth cover is the R34-36 millimeter.
The transmitting assemblies of aforesaid stairs climbing wheelchairs, wherein, tooth bar is along first guide rail dress that can install with stair, constitute have driving rack, meet the straight line of stair and tortuous stroke track; The length of described transmission group pressure roller is more than or equal to the axial length of roller bearing wheel.
The transmitting assemblies of aforesaid stairs climbing wheelchairs, wherein, the maximum diameter of the first guide rail transverse section is set to the axial length more than or equal to the roller bearing wheel of gear.
Advantage of the present invention and good effect be by above technological scheme as can be known:
Gear provided by the invention, tooth bar group, structure be more suitable for the climbing transmission of stair wheelchair or other object carriers, when can making gear and tooth bar engagement, this case adjusts point of contact automatically slightly, softer when making gear and tooth bar engagement driving, more releive, can effectively improve the smoothness of wheelchair transmission operation;
The optimization setting of movable tooth can make wheel and rack the time form theoretical operation work in operation to be the some contact in this case gear, thereby can effectively avoid violating anti-problem in conventional gears, the tooth bar transmission process, thereby can effectively improve transmission stability;
The orbit Design of this case transmitting assemblies, guide rail can play better supporting effect to tooth bar, effectively simplified manufacturing technique, reduce manufacture cost, and make materials consumption littler; And more convenient batch assembling.
The accessory part of this case setting can effectively play and help the more effect of smooth running of wheelchair; This case second guide rail and first guide rail combine fixed installation with stair respectively at grade, and the gear of the bottom roller group of accessory part, upper roller group and transmitting assemblies all is installed on the static housing, are assisting transmitting assemblies to make wheelchair climb the building steadily; The present invention is simple in structure, and the industry that is more suitable for is used and promoted.
For further understanding technology contents of the present invention, characteristics and effect, exemplify following preferred embodiment now, and conjunction with figs. is described in detail as follows:
Description of drawings
Fig. 1 is an overall structure assembling schematic representation of the present invention;
Fig. 2 is a transmitting assemblies assembling decomposition texture schematic representation among the present invention;
Fig. 3 is that middle gear of the present invention is partly assembled the decomposition texture schematic representation;
Fig. 3 a is the mandrel and the tooth cover assembling decomposition texture schematic representation of movable tooth in the gear of the present invention;
Fig. 4 is the structural representation of roller bearing wheel in the gear of the present invention;
Fig. 4 a is the side-looking face structural representation of roller bearing wheel in the gear of the present invention;
Fig. 4 b is the A-A sectional structure schematic representation of Fig. 4 a;
Fig. 5 is a middle orbit structural representation of the present invention;
Fig. 5 a is the A-A sectional structure schematic representation of Fig. 5;
Fig. 5 b is the B-B sectional structure schematic representation of Fig. 5.
Embodiment
Below in conjunction with preferred embodiment, to according to embodiment provided by the invention, feature and effect thereof, describe in detail as after; For simple and purpose clearly, hereinafter appropriate omission the description of known technology, in order to avoid those unnecessary details influences are to the description of the technical program.
Shown in Fig. 1-5, a kind of transmitting assemblies 1 of stairs climbing wheelchairs, it comprises driving gear and tooth bar, see Fig. 1-2, this transmitting assemblies passes through main drive shaft 10 transmissions by the power unit (not shown) that speed reducer and motor constitute, and transmitting assemblies 1 is by static housing 3 fixed installations, and the wheelchair (not shown) also installs by this static housing, wherein, has driving rack on the track 12 that installs with stair.
This track 12 with driving rack is to be made of the tooth bar 122 and first guide rail 121, and tooth bar 122 is welded along first guide rail 121; This first guide rail and stair install, and the stroke structure of pressing stair is provided with, and constitute to meet the straight line of stair and the guide rail of tortuous stroke;
Described first guide rail includes but not limited to the guide rail of pipe section bar; The diameter b of the first guide rail transverse section is set to the axial length d more than or equal to the roller bearing wheel 114 of gear; This structure can effectively be strengthened the intensity of the track of additional tooth bar, and when rack and pinion meshed, first guide rail can play better supporting effect to tooth bar;
The design more meets the needs of batch process, tooth bar, guide rail all can be used as the standard piece section bar of wildcard, thereby the more effective manufacture cost that reduces, guide rail is by the staircase structure intercepting of concrete engineering, the guide rail that welds out straight line and turn round, structure by guide rail intercepts the tooth bar section bar again, and the tooth bar that is welded on the guide rail has just formed the track of the various straight Qu Butong that meet requirement of engineering, can satisfy the engineering demand of different configurations thus;
Gear 11 is installed on the static housing 3 by main drive shaft 10 by assembly unit 14, and this gear becomes intermeshing make to install with driving rack on first guide rail;
Described assembly unit 14 has the mounting plate 141 that can install with static housing 3, and the bottom of this mounting plate is provided with gear assembly department 1411, and this main drive shaft 10 is taken this assembly department assembling with gear 11; The top of mounting plate is provided with transmission group pressure roller 142, and this transmission group pressure roller becomes can press the mode of track 12 upper limbs and installs; This pressure roller can be installed around the mode that bearing pin rotates for 1421 one-tenth by bearing pin; The length c of this pressure roller is more than or equal to the axial length d of roller bearing wheel, and this design can more effectively be assisted a ruler in governing a country gear, tooth bar steadily meshes;
Described gear 11 is made up of roller bearing wheel 114 and the uniform movable tooth 112 that is installed on this roller bearing wheel, referring to Fig. 3, Fig. 3 a, roller bearing wheel 114 is provided with the movable tooth pilot hole 1141 of five equilibrium, be used for installation activity tooth 112, roller bearing wheel is gone up the between cog centre distance a that five equilibrium arc length a ' between the adjacent pilot hole is equivalent to (being equivalent to promptly equal or be slightly larger than or be slightly less than) tooth bar, constructs the between cog centre distance that arc length between the formation activity tooth is equivalent to tooth bar thus;
Described movable tooth 112 is made of mandrel 1122 and tooth cover 1121, mandrel is packed on the roller bearing wheel, the tooth cover becomes and can be sleeved on the mandrel around the mode that mandrel rotates, the gap that forms between mandrel and tooth overlap thus, can adjust point of contact in the time of can realizing the engagement of gear and tooth bar automatically slightly so that softer when gear and tooth bar engagement driving; Can effectively improve the smoothness of wheelchair transmission operation thus;
Described tooth cover 1121 is a swelling-waist shape, and its any bus is the evagination camber line, and the evagination camber line radian of this tooth cover is a predefined value, and this default radian value can be the R32-38 millimeter, further can be the R34-36 millimeter; Intention is set thus to be: wheel and rack forms theoretical operation work and is the some contact when operation; Thereby can effectively avoid in the transmission process reaching the technical purpose that improves the transmission traveling comfort because of theory operation work is that the wheel and rack that the face contact causes is violated anti-problem;
The ratio of the axial length H of the movable tooth cover on the width D of tooth bar and the gear is set to D:H and is not less than 1: 1.3; The driving rack guide rail of the She Zhiing requirement of strength that not only is more suitable for carrying wheelchair thus, and materials consumption is still less;
Further step is for the stability of strengthening the wheelchair operation accessory part 2 to be set, this accessory part is packed in and transmitting assemblies 1 corresponding position by static housing 3, install so that wheelchair and static housing are stable, be the top that transmitting assemblies 1 is positioned at static housing, the just corresponding bottom that is located at static housing of accessory part; Otherwise transmitting assemblies is positioned at the bottom of static housing, the just corresponding top that is located at static housing of accessory part, thus can assist the wheelchair smooth running;
Described bottom roller group 23 by two the structure identical movable roll 231 form, but and the mode of 231 one-tenth supports of this movable roll, second guide rail install; The upper roller group goes up pressure roller 241,241 ' by two to be formed, and this upper roller group becomes to cooperate the embedding of bottom roller group to live second guide rail with second guide rail mode is installed; Wherein has one three roller roller 241 in the upper roller group, this three rollers roller 241 is assembled into three roller rollers by three kinks 2411 by 2412 one-tenth trigonometrical point position configurations of link, this structure can further be realized the function that accessory part is adjusted automatically slightly when wheelchair moves, help the more purpose of smooth running of wheelchair thereby play;
Second guide rail and first guide rail are at grade, combine fixed installation with stair respectively, the gear of the bottom roller group of accessory part, upper roller group and transmitting assemblies all is installed on the static housing, the engagement driving of gear, tooth bar, make the bottom roller group and the passive rolling of upper roller group of accessory part, assisting transmitting assemblies to make wheelchair climb the building steadily;
113 is gear load module among the figure, the 1131st, and screw wherein;
Described wheelchair can replace to car body or casing equivalent-load body, all echos the design concept of this case;
The above, it only is preferred embodiment of the present invention, be not that the present invention is done any pro forma restriction, every foundation technical spirit of the present invention all still belongs in the scope of technical solution of the present invention any simple modification, equivalent variations and modification that above embodiment did.
Claims (9)
1. the transmitting assemblies of a stairs climbing wheelchairs comprises driving gear and tooth bar, it is characterized in that, track has driving rack on (12), and this track can install with stair; Gear (11) is installed on the static housing (3) by main drive shaft, and becomes intermeshing make to install with driving rack on the track (12); Gear (11) is installed by assembly unit (14), and described assembly unit has the mounting plate (141) that can install with static housing, and the bottom of this mounting plate is provided with the gear assembly department (1411) that can hold main drive shaft (10) and gear assembling; The top of mounting plate is provided with the transmission group pressure roller (142) that can press track (12) upper limb, and this pressure roller is installed by bearing pin (1421), and pressure roller becomes and can assemble around the mode that bearing pin rotates;
Bottom roller group (23) but form by two movable roll (231) that become the support mode to install with second guide rail; Upper roller group (24) goes up pressure roller by two to be formed, and this upper roller group becomes to cooperate the embedding of bottom roller group to live second guide rail with second guide rail mode is installed and formed the embedding mouth; Have one three roller roller (241) in the upper roller group, this three rollers roller becomes the configuration of trigonometrical point position to be assembled into three roller rollers by three kinks (2411) by link (2412).
2. the transmitting assemblies of stairs climbing wheelchairs as claimed in claim 1 is characterized in that, described gear (11) is made up of roller bearing wheel (114) and movable tooth (112), and this activity tooth is installed on the described roller bearing wheel; Described movable tooth is made of the mandrel (1122) and the tooth cover (1121) that are packed on the roller bearing wheel, and this tooth cover is assembling around the mode that mandrel rotates.
3. the transmitting assemblies of stairs climbing wheelchairs as claimed in claim 2 is characterized in that, described tooth cover is swelling-waist shape, and its any bus is the evagination camber line with default radian.
4. the transmitting assemblies of stairs climbing wheelchairs as claimed in claim 3 is characterized in that, the arc length between the adjacent movable tooth equals or be slightly larger than or be slightly less than the between cog centre distance of tooth bar.
5. the transmitting assemblies of stairs climbing wheelchairs as claimed in claim 4 is characterized in that, the default radian value of the evagination camber line of described tooth cover is the R32-38 millimeter.
6. the transmitting assemblies of stairs climbing wheelchairs as claimed in claim 5, it is characterized in that, described movable tooth (112) is uniform to be installed on this roller bearing wheel, and roller bearing wheel (114) is provided with the movable tooth pilot hole (1141) of five equilibrium, has the prepsetting gap amount between the mandrel of this activity tooth and the tooth cover.
7. the transmitting assemblies of stairs climbing wheelchairs as claimed in claim 6 is characterized in that, the ratio of the axial length H of the movable tooth cover on the width of described tooth bar and the gear is 1: 1.3; The default radian value of the evagination camber line of described tooth cover is the R34-36 millimeter.
8. as the transmitting assemblies of one of claim 1-7 described stairs climbing wheelchairs, it is characterized in that tooth bar (122) is along can installing with first guide rail (121) that stair install, constitute have driving rack, meet the straight line of stair and tortuous stroke track; The length of described transmission group pressure roller is more than or equal to the axial length of roller bearing wheel.
9. the transmitting assemblies of stairs climbing wheelchairs as claimed in claim 8 is characterized in that, the maximum diameter of the first guide rail transverse section is set to the axial length more than or equal to the roller bearing wheel (114) of gear.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2008101531816A CN101424327B (en) | 2008-11-21 | 2008-11-21 | Drive assembly for stairs climbing wheelchair and pinion and rack set thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2008101531816A CN101424327B (en) | 2008-11-21 | 2008-11-21 | Drive assembly for stairs climbing wheelchair and pinion and rack set thereof |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN101424327A CN101424327A (en) | 2009-05-06 |
| CN101424327B true CN101424327B (en) | 2010-08-11 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2008101531816A Active CN101424327B (en) | 2008-11-21 | 2008-11-21 | Drive assembly for stairs climbing wheelchair and pinion and rack set thereof |
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| Country | Link |
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| CN (1) | CN101424327B (en) |
Families Citing this family (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102091943A (en) * | 2010-12-31 | 2011-06-15 | 太仓市康辉科技发展有限公司 | Curve guide rail |
| CN102259783B (en) * | 2011-03-17 | 2013-04-10 | 太仓市康辉科技发展有限公司 | Mechanical device stopping in case of overspeed |
| CN102836035A (en) * | 2012-09-07 | 2012-12-26 | 深圳职业技术学院 | Wheelchair of climbing stairs for handicapped |
| CN103340723B (en) * | 2013-06-14 | 2017-04-05 | 燕山大学 | A kind of electric stairs-climbing wheelchair of lower limb wheel composite structure |
| CN107826172B (en) * | 2017-10-25 | 2019-09-27 | 北京工业大学 | One kind can obstacle-detouring mobile platform |
| CN108516411A (en) * | 2018-04-28 | 2018-09-11 | 杭州亚恩自动化科技有限公司 | Cylinder yarn lifting gear |
| CN112879512A (en) * | 2021-01-12 | 2021-06-01 | 孙浩静 | Transmission equipment for improving meshing installation precision of gear and rack |
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2008
- 2008-11-21 CN CN2008101531816A patent/CN101424327B/en active Active
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| CN101424327A (en) | 2009-05-06 |
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