CN203831366U - Small headstock gear folding crank - Google Patents
Small headstock gear folding crank Download PDFInfo
- Publication number
- CN203831366U CN203831366U CN201420217557.6U CN201420217557U CN203831366U CN 203831366 U CN203831366 U CN 203831366U CN 201420217557 U CN201420217557 U CN 201420217557U CN 203831366 U CN203831366 U CN 203831366U
- Authority
- CN
- China
- Prior art keywords
- crank
- spring
- headstock gear
- major axis
- taper knob
- 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
A small headstock gear folding crank comprises a shaft head square sleeve, a crank long shaft, an annular supporting plate, a crank middle connection, a spring shaft, a spring and a handle sleeve; wherein the shaft head square sleeve is connected to an upper end of the crank long shaft and is coaxial with the crank long shaft, the annular supporting plate is rotatably connected to a lower-middle part of the crank long shaft, the annular supporting plate is provided with a circular arc gap, a side surface of a lower end of the crank long shaft is connected with a U-shaped connecting sheet, a right end of the crank middle connection is provided with a connecting slot at a position passing an axis, the U-shaped connecting sheet is arranged inside the connecting slot and is connected with the crank middle connection through a pin, an upper half part of the right end of the crank middle connection is in a circular arc shape, and a lower side surface of a left end of the crank middle connection is connected with a handle pipe. The small headstock gear folding crank of the utility model is simple in structure, convenient in use, and low in manufacturing cost, in addition, the small headstock gear folding crank has a smaller volume after being folded, thus the small headstock gear folding crank is convenient for carrying and storing, and is beneficial to raising work efficiency.
Description
Technical field
The utility model relates to a kind of crank, relates in particular to the folding crank of a kind of little headstock gear.
Background technology
Little Qi headstock gear is generally all arranged on the regions such as river course, countryside, have inconvenient traffic, water resources management personnel are conventionally by manually carrying relevant use instrument, and common little headstock gear crank is because volume is large, carry very inconvenience, feedwater resources manager's routine work brings a lot of troubles.
Summary of the invention
For the defect existing in prior art, the utility model provides a kind of little headstock gear to fold crank.
Concrete technical scheme is as follows: a kind of little headstock gear folds crank, comprise spindle nose square set, crank major axis, annular backup pad, in crank, connect, spring shaft, spring and taper knob, described spindle nose square set be connected in crank major axis upper end and and crank major axis on same axis, annular backup pad is rotationally connected with crank major axis middle and lower part, annular backup pad is provided with a circular arc cutaway, crank major axis lower end side is connected with U-shaped brace, in crank, connect right-hand member and be provided with link slot through axial location, U-shaped brace is arranged in link slot inside and connects in succession by bearing pin and crank, in crank, connecing right-hand member the first half is circular arc type, in crank, connect left end downside and be connected with handle tube, handle tube is provided with two symmetrical rectangular channels, in handle tube, be provided with two U-shaped braces of the length being parallel to each other, gap between two long U-shaped braces communicates with two rectangular channels, long U-shaped brace is connected with spring shaft by bolt, spring is placed on spring shaft, its lower end is fixedly connected with spring shaft, taper knob is placed on spring, taper knob lower end is closed, upper end is provided with annular end cap, annular end cap internal diameter is less than spring diameter.
Circular arc cutaway on described annular backup pad and crank major axis are tangent, and its arc radius is with to connect radius in crank identical.
The length of described handle tube is greater than the external diameter of taper knob.
The utility model is simple in structure, easy to use, low cost of manufacture, and volume after folding diminishes, and is convenient for carrying and takes care of, and is conducive to increase work efficiency.
Brief description of the drawings
Fig. 1 is the utility model structural representation;
Fig. 2 is the structural representation under the utility model folded state;
Fig. 3 is A-A cross-sectional view in Fig. 1;
Fig. 4 is the local enlarged diagram in B place in the utility model Fig. 1;
Fig. 5 is connecting structure schematic diagram in the utility model crank;
Fig. 6 is the top view of Fig. 5.
Detailed description of the invention
As depicted in figs. 1 and 2, the folding crank of a kind of little headstock gear, comprise spindle nose square set 1, crank major axis 2, annular backup pad 3, in crank, connect 4, spring shaft 5, spring 6 and taper knob 7, described spindle nose square set 1 be connected in crank major axis 2 upper ends and and crank major axis 2 on same axis, annular backup pad 3 is rotationally connected with crank major axis 2 middle and lower parts, in the time that the utility model is worked, annular backup pad 3 maintains static, crank major axis 2 is in the interior rotation of annular backup pad 3 and can not shake, as shown in Figure 3, annular backup pad 3 is provided with a circular arc cutaway 8, crank major axis 2 lower end side are connected with U-shaped brace 9, in crank, connect 4 right-hand members and be provided with link slot 10 through axial location, U-shaped brace 9 is arranged in link slot 10 inside and connects 4 by bearing pin 15 and crank and is connected, in crank, connecing 4 right-hand member the first half is circular arc type, make to connect in crank 4 can around bearing pin 15 rotate up 90 ° concordant with crank major axis 2.
As shown in Figure 4, in crank, connect 4 left end downsides and be connected with handle tube 11, handle tube 11 is provided with two symmetrical rectangular channels 12, in handle tube 11, be provided with two U-shaped braces 13 of the length being parallel to each other, gap between two long U-shaped braces 13 communicates with two rectangular channels 12, long U-shaped brace 13 is connected with spring shaft 5 by bolt, spring 6 is placed on spring shaft 5, its lower end is fixedly connected with spring shaft 5, taper knob 7 is placed on spring 6, taper knob 7 lower ends are closed, upper end is provided with annular end cap 14, annular end cap 14 internal diameters are less than the diameter of spring 6, ensure that spring 6 can not eject at taper knob 7, by spring 6, taper knob 7 is pressed on handle tube 11.
In the time that the utility model is not worked, rotate up 90 ° by connecing 4 in crank around bearing pin 15,
As shown in Figure 3, circular arc cutaway 8 is tangent with crank major axis 2, and its arc radius is with to connect 4 radiuses in crank identical, in crank, connect 4 can fit tightly with crank major axis 2 together with; Taper knob 7 is pulled back, taper knob 7 and handle tube 11 are departed from, taper knob 7 half-twist to the left or to the right, then release handle cover 7, is pressed on taper knob 7 on the sidewall of handle tube 11 by spring 6.The length of handle tube 11 is greater than the external diameter of taper knob 7, can increase the contact area of taper knob 7 and handle tube 11, makes both connections tightr, and now the utility model smaller volume, is easy to carry.
Claims (3)
1. the folding crank of little headstock gear, comprise spindle nose square set, crank major axis, annular backup pad, in crank, connect, spring shaft, spring and taper knob, it is characterized in that: described spindle nose square set be connected in crank major axis upper end and and crank major axis on same axis, annular backup pad is rotationally connected with crank major axis middle and lower part, annular backup pad is provided with a circular arc cutaway, crank major axis lower end side is connected with U-shaped brace, in crank, connect right-hand member and be provided with link slot through axial location, U-shaped brace is arranged in link slot inside and connects in succession by bearing pin and crank, in crank, connecing right-hand member the first half is circular arc type, in crank, connect left end downside and be connected with handle tube, handle tube is provided with two symmetrical rectangular channels, in handle tube, be provided with two U-shaped braces of the length being parallel to each other, gap between two long U-shaped braces communicates with two rectangular channels, long U-shaped brace is connected with spring shaft by bolt, spring is placed on spring shaft, its lower end is fixedly connected with spring shaft, taper knob is placed on spring, taper knob lower end is closed, upper end is provided with annular end cap, annular end cap internal diameter is less than spring diameter.
2. the folding crank of little headstock gear as claimed in claim 1, is characterized in that: the circular arc cutaway on described annular backup pad and crank major axis are tangent, and its arc radius is with to connect radius in crank identical.
3. the folding crank of little headstock gear as claimed in claim 1, is characterized in that: the length of described handle tube is greater than the external diameter of taper knob.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420217557.6U CN203831366U (en) | 2014-04-30 | 2014-04-30 | Small headstock gear folding crank |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420217557.6U CN203831366U (en) | 2014-04-30 | 2014-04-30 | Small headstock gear folding crank |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203831366U true CN203831366U (en) | 2014-09-17 |
Family
ID=51509253
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420217557.6U Expired - Fee Related CN203831366U (en) | 2014-04-30 | 2014-04-30 | Small headstock gear folding crank |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203831366U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106140385A (en) * | 2016-08-31 | 2016-11-23 | 林伟 | The folding hidden action bars of rubber grinder |
-
2014
- 2014-04-30 CN CN201420217557.6U patent/CN203831366U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106140385A (en) * | 2016-08-31 | 2016-11-23 | 林伟 | The folding hidden action bars of rubber grinder |
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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 |
Granted publication date: 20140917 Termination date: 20190430 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |