CN203009523U - Improved measurement base connecting screw - Google Patents
Improved measurement base connecting screw Download PDFInfo
- Publication number
- CN203009523U CN203009523U CN 201220714580 CN201220714580U CN203009523U CN 203009523 U CN203009523 U CN 203009523U CN 201220714580 CN201220714580 CN 201220714580 CN 201220714580 U CN201220714580 U CN 201220714580U CN 203009523 U CN203009523 U CN 203009523U
- Authority
- CN
- China
- Prior art keywords
- lead screw
- screw mandrel
- screw
- measurement
- length
- 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 - Lifetime
Links
- 238000005259 measurement Methods 0.000 title abstract description 21
- 229910001220 stainless steel Inorganic materials 0.000 claims abstract description 4
- 239000010935 stainless steel Substances 0.000 claims abstract description 4
- 238000000034 method Methods 0.000 abstract description 3
- 239000012467 final product Substances 0.000 description 2
- 239000000047 product Substances 0.000 description 2
- 238000010276 construction Methods 0.000 description 1
- 230000003068 static Effects 0.000 description 1
Images
Abstract
The utility model provides an improved measurement base connecting screw, is applied to the field of high-speed railway precision engineering measurement, and is a measurement accessory used in track control net measurement. A lead screw is adopted, the lead screw is integrally combined by an upper portion, a middle portion and a lower portion, the upper portion and the lower portion of the lead screw are provided with threads, and the middle portion of the lead screw is of a square structure without threads. The length of the upper portion of the lead screw is longer than that of the lower portion of the lead screw, the side length of the square structure without threads in the middle portion of the lead screw is longer than the diameters of the portions of the lead screw with threads, and the lead screw is made of stainless steel. In an actual using process, firstly the lower portion of the lead screw is connected with an embedded part and tightened, and then a measurement base is connected to the upper portion of the embedded part and tightened. The improved measurement base connecting screw is simple in structure, reasonable in design and convenient to use. Compared with existing connecting screws of other types, the improved measurement base connecting screw can improve measurement efficiency and save measurement time.
Description
Technical field
The utility model relates to a kind of measurement accessory that engineering survey is used, and particularly a kind of modified model is measured the pedestal connecting screw.The utility model is applied to the high-speed railway field of precise engineering survey, and it is a kind of measurement accessory of using when rail control network is measured.
Background technique
Before the ballastless track of high-speed railway construction, need to encrypt the control point under line on line, as the data of starting at of rail control network.Encrypt control point survey and generally adopt gps satellite location survey mode, at least 3 GPS receiving machines are set up on the control point that will encrypt on control Points And lines under online simultaneously carry out static measurement.For the control point under line, because its some position is measurement observation mark with the cross center, so we adopt tripod to set up usually, then connect and measure pedestal and GPS receiving antenna.And for the control point on line, because it adopts the embedded part mode usually, so usually connect embedded part and measure pedestal with a connecting screw, connect again the GPS receiving antenna above the measurement pedestal.The connecting screw of commonly using at present, is not easy it is taken out from embedded part or measurement pedestal because the middle part is circular design (as shown in Figure 3) after measurement is completed, usually can be stuck on embedded part or measurement pedestal, and then time and the efficient of impact measurement.
Summary of the invention
The purpose of this utility model is, for the deficiency that prior art exists, improves, and proposes and studies a kind of modified model and measure the pedestal connecting screw.Fundamental function of the present utility model is to connect to measure pedestal and embedded part.
Technical solution of the present utility model is that a kind of modified model is measured the pedestal connecting screw, adopts screw mandrel, screw mandrel is combined into one by upper, middle, and lower part, it is characterized in that, the upper part of screw mandrel and lower part have screw thread, and the intermediate portion of screw mandrel is threadless square structure.
It is characterized in that, the length of the upper part of screw mandrel is greater than the length of the lower part of screw mandrel.
It is characterized in that, the length of side of the threadless square structure of intermediate portion of screw mandrel is greater than the diameter of the threaded part of screw mandrel.
It is characterized in that, the length of screw mandrel is 46mm, and the diameter of the threaded part of screw mandrel is 15mm, and the length of side of the square structure of the intermediate portion of screw mandrel is 29mm.
It is characterized in that, screw mandrel adopts Stainless Steel Products.
The utility model has the advantages that, simple in structure, reasonable in design, easy to use.Than the connecting screw of existing other types, measuring in pedestal or in embedded part the time, can take out at an easy rate when the utility model is stuck.Equally, after completing, measurement also can take out from measure pedestal or embedded part easily.Therefore, the utility model can improve measures efficient, saves measurement time.
Description of drawings
Fig. 1 is the plan view of basic structure of the present utility model.
Fig. 2 is the plan view of basic structure of the present utility model.
Fig. 3 is the plan view of the basic structure of existing connecting screw.
Embodiment
Below in conjunction with description of drawings and embodiment, the utility model is described in further detail.
Referring to Fig. 1, Fig. 2, the utility model adopts screw mandrel, screw mandrel is combined into one by upper, middle, and lower part, upper part and the bottom of screw mandrel are divided into cylindrical body, the intermediate portion of screw mandrel is square structure, the upper part of post screw mandrel and lower part have screw thread, and the intermediate portion of screw mandrel is threadless square structure.The length of the upper part of screw mandrel is greater than the length of the lower part of screw mandrel.
The length of side of the threadless square structure of intermediate portion of screw mandrel is greater than the diameter of the threaded part of screw mandrel.The length of screw mandrel is 46mm, and the diameter of the threaded part of screw mandrel is 15mm, and the length of side of the square structure of the intermediate portion of screw mandrel is 29mm.
Screw mandrel adopts Stainless Steel Products.
In actual using process, first the utility model bottom is connected with embedded part, tightens and get final product.And then will measure pedestal and connect at an upper portion thereof, tighten and get final product.Stuck at embedded part or in measuring pedestal the time when the utility model, clamp the threadless square structure of screw mandrel intermediate portion with spanner, then rotating spanner can be with the utility model connecting screw from embedded part or measure pedestal and screw out.
Claims (5)
1. a modified model is measured the pedestal connecting screw, adopts screw mandrel, and screw mandrel is combined into one by upper, middle, and lower part, it is characterized in that, the upper part of screw mandrel and lower part have screw thread, and the intermediate portion of screw mandrel is threadless square structure.
2. described a kind of modified model is measured the pedestal connecting screw according to claim 1, it is characterized in that, the length of the upper part of screw mandrel is greater than the length of the lower part of screw mandrel.
3. described a kind of modified model is measured the pedestal connecting screw according to claim 1, it is characterized in that, the length of side of the threadless square structure of intermediate portion of screw mandrel is greater than the diameter of the threaded part of screw mandrel.
4. described a kind of modified model is measured the pedestal connecting screw according to claim 1, it is characterized in that, the length of screw mandrel is 46mm, and the diameter of the threaded part of screw mandrel is 15mm, and the length of side of the square structure of the intermediate portion of screw mandrel is 29mm.
5. described a kind of modified model is measured the pedestal connecting screw according to claim 1, it is characterized in that, screw mandrel adopts Stainless Steel Products.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220714580 CN203009523U (en) | 2012-12-22 | 2012-12-22 | Improved measurement base connecting screw |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220714580 CN203009523U (en) | 2012-12-22 | 2012-12-22 | Improved measurement base connecting screw |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203009523U true CN203009523U (en) | 2013-06-19 |
Family
ID=48601120
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220714580 Expired - Lifetime CN203009523U (en) | 2012-12-22 | 2012-12-22 | Improved measurement base connecting screw |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203009523U (en) |
-
2012
- 2012-12-22 CN CN 201220714580 patent/CN203009523U/en not_active Expired - Lifetime
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20130619 |