CN204286252U - A kind of rotary folding type ruler - Google Patents
A kind of rotary folding type ruler Download PDFInfo
- Publication number
- CN204286252U CN204286252U CN201420460877.4U CN201420460877U CN204286252U CN 204286252 U CN204286252 U CN 204286252U CN 201420460877 U CN201420460877 U CN 201420460877U CN 204286252 U CN204286252 U CN 204286252U
- Authority
- CN
- China
- Prior art keywords
- chi plate
- chi
- plate
- slidably
- folding type
- 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
Links
Abstract
The utility model relates to a kind of rotary folding type ruler, it comprises left chi plate, middle chi plate, right chi plate, coupling arrangement, slidably chi plate, it is characterized in that: the You Liangge hole, two ends of middle chi plate and two boss, hole is used for connecting left chi plate and right chi plate by coupling arrangement, left chi plate, right chi plate respectively have a groove, agree with mutually with middle chi plate projection position, left chi plate, right chi panel edges respectively have a conduit, and slidably chi plate is positioned on conduit.By sliding, the diameter of trees measured by slidably chi plate.Feature of the present utility model does not need through computing, just directly can read scale on ruler to determine the diameter of trees, reasonable in design, is easy to carry, and is easy to processing, improves the work efficiency of staff.
Description
Technical field
the utility model relates to gardens survey instrument, is specifically related to a kind of rotary folding type ruler.
Background technology
in forest inventory investigation and monitoring, the mode of many employings continuous monitoring sample trees growth course in permanent sample plot predicts the situation of change of every investigation factor of the forest reserves, and the forest resource data information issued as country is exactly the Monitoring Data etc. coming from the collection of National Forest monitoring resource system.In every investigation factor of the forest reserves, the situation of change of the factors such as seeds, the diameter of a cross-section of a tree trunk 1.3 meters above the ground, the height of tree, the volume of timber, increment is that the continuous monitoring by carrying out strain forest every in permanent sample plot obtains.
at present, the method for gardens work personnel record trees first measures the girth of trees, then according to formula girth=2 π × radius, in the hope of the numerical value of radius, then according to the size of formula area=π × radius 2 in the hope of area, very inconvenient.
Summary of the invention
for the deficiency solved the problem, it is simple that the utility model provides structure, a kind of rotary folding type ruler of convenient operation.
the utility model realizes like this.A kind of rotary folding type ruler, it comprises left chi plate, middle chi plate, right chi plate, coupling arrangement, slidably chi plate, it is characterized in that: the You Liangge hole, two ends of middle chi plate and two boss, hole is used for connecting left chi plate and right chi plate by coupling arrangement, left chi plate, right chi plate respectively have a groove, agree with mutually with middle chi plate projection position, left chi plate, right chi panel edges respectively have a conduit, and slidably chi plate is positioned on conduit.
described coupling arrangement is small cylinder.
described left chi plate, right chi plate around each axis of rotation maximum rotatable 90 °.
described slidably chi plate can be free to slide on conduit.
described diameter is measured by the slidably chi plate that slides.
the utility model does not need through computing, just directly can read scale on ruler to determine the diameter of trees, reasonable in design, is easy to carry, and is easy to processing, improves the features such as the work efficiency of staff.
Accompanying drawing explanation
fig. 1 is the utility model integrated connection schematic diagram.
Embodiment
embodiment 1
a kind of rotary folding type ruler, it comprises middle chi plate 1, left chi plate 2, right chi plate 3, slidably chi plate 4, coupling arrangement 5, it is characterized in that: the You Liangge hole, two ends of middle chi plate 1 and two boss, hole is used for connecting left chi plate 2 and right chi plate 3 by coupling arrangement 5, left chi plate 2, right chi plate 3 respectively have a groove, agree with mutually with middle chi plate 1 projection position, respectively there is a conduit 6 at left chi plate 2, right chi plate 3 edge, and slidably chi plate 4 is positioned on conduit 6.
embodiment 2
described coupling arrangement 5 is small cylinder.
embodiment 3
described left chi plate 2, right chi plate 3 around each axis of rotation maximum rotatable 90 °.
embodiment 4
described slidably chi plate 4 can be free to slide on conduit 6.
embodiment 5
described diameter is measured by the slidably chi plate 4 that slides.
Claims (4)
1. a rotary folding type ruler, comprise left chi plate, middle chi plate, right chi plate, coupling arrangement, slidably chi plate, it is characterized in that: the You Liangge hole, two ends of middle chi plate and two boss, hole is used for connecting left chi plate and right chi plate by coupling arrangement, left chi plate, right chi plate respectively have a groove, agree with mutually with middle chi plate projection position, left chi plate, right chi panel edges respectively have a conduit, and slidably chi plate is positioned on conduit.
2. a kind of rotary folding type ruler according to claim 1, is characterized in that: coupling arrangement is small cylinder.
3. a kind of rotary folding type ruler according to claim 1, is characterized in that: left chi plate, right chi plate around each axis of rotation maximum rotatable 90 °.
4. a kind of rotary folding type ruler according to claim 1, is characterized in that: slidably chi plate can be free to slide on conduit.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420460877.4U CN204286252U (en) | 2014-08-15 | 2014-08-15 | A kind of rotary folding type ruler |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420460877.4U CN204286252U (en) | 2014-08-15 | 2014-08-15 | A kind of rotary folding type ruler |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204286252U true CN204286252U (en) | 2015-04-22 |
Family
ID=52869403
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420460877.4U Expired - Fee Related CN204286252U (en) | 2014-08-15 | 2014-08-15 | A kind of rotary folding type ruler |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204286252U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109737852A (en) * | 2019-02-22 | 2019-05-10 | 海盐森植生物科技有限公司 | Plant tree breast diameter survey device |
| CN109931849A (en) * | 2019-02-22 | 2019-06-25 | 海盐森植生物科技有限公司 | Plant information quickly identifies equipment |
-
2014
- 2014-08-15 CN CN201420460877.4U patent/CN204286252U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109737852A (en) * | 2019-02-22 | 2019-05-10 | 海盐森植生物科技有限公司 | Plant tree breast diameter survey device |
| CN109931849A (en) * | 2019-02-22 | 2019-06-25 | 海盐森植生物科技有限公司 | Plant information quickly identifies equipment |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20150422 Termination date: 20160815 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |