CN203176252U - Gear-and-rack wheel type transmission structure - Google Patents
Gear-and-rack wheel type transmission structure Download PDFInfo
- Publication number
- CN203176252U CN203176252U CN 201320126619 CN201320126619U CN203176252U CN 203176252 U CN203176252 U CN 203176252U CN 201320126619 CN201320126619 CN 201320126619 CN 201320126619 U CN201320126619 U CN 201320126619U CN 203176252 U CN203176252 U CN 203176252U
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- CN
- China
- Prior art keywords
- tooth bar
- gear
- spoke
- type
- tooth
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
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Abstract
The utility model provides a gear-and-rack wheel type transmission structure, and belongs to the field of mechanical transmission. The gear-and-rack wheel type transmission structure comprises a poke type big gear and multiple rack blocks. The multiple rack blocks are connected mutually, surround the spoke type big gear, and are meshed with the spoke type big gear. By the adoption of a gear-and-rack meshing type caterpillar band structure, the gear-and-rack wheel type transmission structure is stable in movement and capable of realizing mutual conversion of rotational motions. The gear-and-rack wheel type transmission structure can be applied to wheelbarrows serving as tools for riding instead of walk in the wild or in medium and large work places.
Description
Technical field
The utility model relates to a kind of wheeled drive mechanism, relates in particular to the wheeled drive mechanism of a kind of gear rack.
Background technique
Traditional gear rack drive mechanism, employing be wheel and rack engagement driving pair, its tooth bar can only extend along rectilinear direction, realization be straight reciprocating motion and the mutual conversion that rotatablely moves.Its tooth bar can not be designed to curved shape, can not realize the mutual conversion that rotatablely moves.
Summary of the invention
At above-mentioned prior art, the technical problems to be solved in the utility model provides that a kind of tooth bar can be designed to ring-type, the wheeled drive mechanism of gear rack of conversion mutually of realizing rotatablely moving.
In order to solve the problems of the technologies described above, the utility model provides a kind of gear rack wheeled drive mechanism, comprise spoke-type gearwheel, several tooth bar pieces, described several tooth bar pieces are connected to each other to be looped around on the described spoke-type gearwheel and with described spoke-type gearwheel and mesh.Several tooth bar pieces are connected to each other from beginning to end and encompass a tooth bar ring, and the spoke-type gearwheel rotates under external force, drive the tooth bar ring along with rotation, thereby have realized the mutual conversion that the gear rack engagement rotatablely moves.
As further improvement of the utility model, described tooth bar piece both sides respectively are provided with tooth bar anticreep baffle plate.
As further improvement of the utility model, described tooth bar anticreep baffle plate inboard is provided with the anti-inclined to one side block of tooth bar.Adopt " tooth bar anticreep baffle plate, the anti-inclined to one side block of tooth bar and spoke-type gearwheel " combination make the tooth bar piece as crawler belt stable be flexible being wrapped on the gear mass, realized gear rack gear motion truly.
As further improvement of the utility model, described spoke-type gearwheel adopts spoke-type circular arc straight toothed spur gear.The tooth of spoke-type gearwheel outer most edge and the tooth on the tooth bar piece intermesh, and circular arc straight-tooth flank profil has realized the flatness in the engagement detaching motion process.
As further improvement of the utility model, the profile of tooth width of described spoke-type gearwheel is identical with the profile of tooth width of tooth bar piece, and structure is tightr.
Compared to prior art, the wheeled drive mechanism of gear rack of the present utility model, the structure that the tooth bar ring that adopts gear and several tooth bar pieces to constitute is meshed has realized the mutual conversion that rotatablely moves.Adopt tooth bar ring that " tooth bar anticreep baffle plate, the anti-inclined to one side block of tooth bar and spoke-type gearwheel " combination makes that several tooth bar pieces constitute as crawler belt stable be flexible being wrapped on the gear mass, realized gear rack gear motion truly.
Description of drawings
Fig. 1 is the utility model stereogram;
Fig. 2 is the utility model stereochemical structure decomposing schematic representation;
Fig. 3 is the utility model middle rack piece combination stereogram;
Fig. 4 is spoke-type gearwheel stereogram in the utility model;
Fig. 5 is spoke-type gearwheel plan view in the utility model;
Fig. 6 is spoke-type gearwheel circular arc straight-tooth flank profil enlarged view in the utility model.
Each component names is as follows among the figure:
123---the tooth bar piece
124---tooth bar anticreep baffle plate
125---tooth bar is prevented inclined to one side block
126---the spoke-type gearwheel
Embodiment
Below in conjunction with accompanying drawing the utility model is described further.
As Fig. 1, Fig. 2, shown in Figure 3, the utility model provides a kind of gear rack wheeled drive mechanism, it comprises: a spoke-type gearwheel 126, the long tooth bar cutting that an energy and spoke-type gearwheel 126 are meshed is divided into several tooth bar pieces 123, each tooth bar piece 123 passes through bearing pin head and the tail connecting ring on spoke-type gearwheel 126, form the tooth bar ring (not shown) that a tooth bar piece 123 is combined into, its total length of long tooth bar is greater than the maximum perimeter of spoke-type gearwheel 126.Tooth bar piece 123 general shapes are block, and the top be several teeth, and the specification of tooth is identical with the specification of the tooth of the spoke-type gearwheel 126 at center, and function is the spoke-type gearwheel 126 formation meshing relations with the center; Tooth bar piece 123 front ends are the design of " protruding " font, and the rear end then is the design of " recessed " font.The side then is equipped with through hole, and the rear end groove of a slice tooth bar piece 123 before the leading portion of back a slice tooth bar piece 123 inserts inserts through hole by bolt then and connects, and finally can connect into some tooth bar pieces 123 the flexible rack ring of a similar crawler belt.
As Fig. 1, Fig. 2, shown in Figure 3, the wheeled drive mechanism of gear rack is in movement process, under the effect of axial force, the tooth bar ring that several tooth bar pieces 123 are combined into can depart from spoke-type gearwheel 126 or come off, for respectively designing a tooth bar anticreep baffle plate 124 in the both sides that occur in tooth bar piece 123 that prevent this situation.The similar isosceles triangle of tooth bar anticreep baffle plate 124 shapes, fillet is all fallen at three angles, all offer through hole at three corners, the dual-side of tooth bar piece 123 also offers two through holes with tooth bar anticreep baffle plate 124 opposite positions relation, adopt bolt and nut fixing tooth stick 123 and 124, two relative tooth bar anticreep baffle plate 124 another sides of tooth bar anticreep baffle plate also to adopt bolt and nut to interfix.
As shown in Figure 3, the neutral position of tooth bar anticreep baffle plate 124 fixedly has a tooth bar to prevent inclined to one side block 125, the anti-inclined to one side block 125 of tooth bar is shaped as cylindric, be used for guaranteeing the relatively stable of movement process middle gear tooth bar piece composite structure (being the tooth bar ring) and spoke-type gearwheel 126, when particularly turning, offset axial power, be unlikely to because steering force causes the relative displacement on spoke-type gearwheel 126 and tooth bar ring (not shown) plane.Simultaneously, anti-inclined to one side block 125 another important function of tooth bar are, when needing to be pulled upwardly after the wheel body of a spoke-type gearwheel 126 of tooth bar piece 123 experience was pressed, are stuck on the tooth inner edge of spoke-type gearwheel 126, play a pull-up effect.
As Fig. 4, shown in Figure 5, the wheeled drive mechanism theme of described gear rack part also is maximum in the wheeled drive mechanism of a whole gear rack part, is the spoke-type gearwheel 126 at center.Spoke-type gearwheel 126 outer most edge are provided with the tooth of a circle special tooth profile, and width is identical with tooth bar piece 123, can with tooth bar piece 123 on tooth mesh.For the plate structure of load is the thinnest part, be with four slotted holes between spoke-type gearwheel 126 division centers and its edge, be used for the connecting bolt space that 123 combinations (as shown in Figure 3) of tooth bar piece realize stable combination.
As Fig. 4, Fig. 5, shown in Figure 6, the tooth of spoke-type gearwheel 126 outer most edge and the tooth on the tooth bar piece 123 are meshing with each other, so select for use with a kind of profile of tooth.Because the requirement of function, the selection of profile of tooth are particularly crucial.Owing to there is bigger pressure between the gear, the flatness in the engagement detaching motion process is very important, thus adopt the compound motion characteristic, and can realize that the circular arc profile that seamlessly transits is the most excellent; Because the characteristic of straight toothed spur gear is the most near the characteristic requirement of spoke-type gearwheel, so can select straight toothed spur gear; Comprehensive above consideration, described spoke-type gearwheel 126 adopts spoke-type circular arc straight toothed spur gears.
Above content be in conjunction with concrete preferred implementation to further describing that the utility model is done, can not assert that concrete enforcement of the present utility model is confined to these explanations.For the utility model person of an ordinary skill in the technical field, under the prerequisite that does not break away from the utility model design, can also make some simple deduction or replace, all should be considered as belonging to protection domain of the present utility model.
Claims (5)
1. the wheeled drive mechanism of gear rack comprises spoke-type gearwheel, several tooth bar pieces, it is characterized in that: described several tooth bar pieces are connected to each other to be looped around on the described spoke-type gearwheel and with described spoke-type gearwheel and mesh.
2. the wheeled drive mechanism of gear rack according to claim 1, it is characterized in that: described tooth bar piece both sides respectively are provided with tooth bar anticreep baffle plate.
3. the wheeled drive mechanism of gear rack according to claim 2 is characterized in that: described tooth bar anticreep baffle plate inboard is provided with the anti-inclined to one side block of tooth bar.
4. according to the wheeled drive mechanism of each described gear rack of claim 1 to 3, it is characterized in that: described spoke-type gearwheel adopts the circular arc straight toothed spur gear.
5. according to the wheeled drive mechanism of each described gear rack of claim 1 to 3, it is characterized in that: the profile of tooth width of described spoke-type gearwheel is identical with the profile of tooth width of tooth bar piece.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320126619 CN203176252U (en) | 2013-03-20 | 2013-03-20 | Gear-and-rack wheel type transmission structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320126619 CN203176252U (en) | 2013-03-20 | 2013-03-20 | Gear-and-rack wheel type transmission structure |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203176252U true CN203176252U (en) | 2013-09-04 |
Family
ID=49072952
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201320126619 Expired - Fee Related CN203176252U (en) | 2013-03-20 | 2013-03-20 | Gear-and-rack wheel type transmission structure |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203176252U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105398286A (en) * | 2015-12-19 | 2016-03-16 | 秦广泉 | Agricultural machine and wheel structure thereof |
-
2013
- 2013-03-20 CN CN 201320126619 patent/CN203176252U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105398286A (en) * | 2015-12-19 | 2016-03-16 | 秦广泉 | Agricultural machine and wheel structure thereof |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20130904 Termination date: 20160320 |