CN204609791U - Helicoid hydraulic motor housing connects trapezoidal tapers screw thread - Google Patents
Helicoid hydraulic motor housing connects trapezoidal tapers screw thread Download PDFInfo
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- CN204609791U CN204609791U CN201520279741.8U CN201520279741U CN204609791U CN 204609791 U CN204609791 U CN 204609791U CN 201520279741 U CN201520279741 U CN 201520279741U CN 204609791 U CN204609791 U CN 204609791U
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- thread
- screw thread
- trapezoidal
- hydraulic motor
- motor housing
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Abstract
The utility model relates to connecting thread technical field, especially relates to a kind of helicoid hydraulic motor housing and connects trapezoidal tapers screw thread.Be characterized in that the tooth form of described screw thread is trapezoidal, thread form angle a is 3-15 degree, and threaded engagement end face is provided with preset clearance.Its form of thread adopts trapezium structure, makes in engagement process, and radial generation extrudes, and holding capacity increases, and application life increases; Trapezoidal surrounding, can strengthened thread intensity with fillet; Threaded engagement end face is provided with preset clearance, by the size of adjusting play, can adjust the size in spiral interference face, makes uniform load be distributed on full stand of thread, makes cooperation tighter; At the bottom of box thread crest and male thread tooth and an inclined side-fit, screw thread moment of torsion is increased, is convenient to dismounting.The utility model reasonable in design, coordinates tight, for convenience detach, long service life.
Description
Technical field
The utility model relates to connecting thread technical field, especially relates to a kind of helicoid hydraulic motor housing and connects trapezoidal tapers screw thread.
Background technology
At present, the geological drilling rig drill rod thread of the most of small-sized mine locating of China adopts rectangular thread substantially, and the such as large type drill such as oil-well rig and raise boring machine drill rod thread all adopts taper angular thread, and when axial compression is larger, screw strength is more weak.Drill rod thread fracture accident is often there is in large-scale raise boring machine when the anti-well of constructing darker; And general screw thread all adopts central diameter to coordinate, screw thread moment of torsion is little, inconvenience dismounting.
Summary of the invention
The purpose of this utility model is to avoid the deficiencies in the prior art to provide a kind of helicoid hydraulic motor housing to connect trapezoidal tapers screw thread, thus effectively solves the defect existed in prior art.
For achieving the above object, the technical scheme that the utility model is taked is: described helicoid hydraulic motor housing connects trapezoidal tapers screw thread, and be characterized in that the tooth form of described screw thread is trapezoidal, thread form angle a is 3-15 degree, and threaded engagement end face is provided with preset clearance.
Described trapezoidal tooth form surrounding is provided with fillet.
During the cooperation of described screw thread at the bottom of box thread crest and male thread tooth and an inclined side-fit.
The beneficial effects of the utility model are: described helicoid hydraulic motor housing connects trapezoidal tapers screw thread, and its form of thread adopts trapezium structure, makes in engagement process, and radial generation extrudes, and holding capacity increases, and application life increases; Trapezoidal surrounding, can strengthened thread intensity with fillet; Threaded engagement end face is provided with preset clearance, by the size of adjusting play, can adjust the size in spiral interference face, makes uniform load be distributed on full stand of thread, makes cooperation tighter; At the bottom of box thread crest and male thread tooth and an inclined side-fit, screw thread moment of torsion is increased, is convenient to dismounting.The utility model reasonable in design, coordinates tight, for convenience detach, long service life.
Accompanying drawing explanation
Below in conjunction with drawings and Examples, the utility model is further illustrated.
Fig. 1 is the utility model structural principle schematic diagram.
Detailed description of the invention
Be described principle of the present utility model and feature below in conjunction with accompanying drawing, example, only for explaining the utility model, is not intended to limit scope of the present utility model.
As shown in Figure 1, described helicoid hydraulic motor housing connects trapezoidal tapers screw thread, and be characterized in that the tooth form 1 of described screw thread is trapezoidal, thread form angle a is 3-15 degree, and threaded engagement end face is provided with preset clearance.
Further, described trapezoidal tooth form 1 surrounding is provided with fillet.
Further, during the cooperation of described screw thread at the bottom of box thread 2 crest and male thread 3 tooth and an inclined side-fit.
Described helicoid hydraulic motor housing connects trapezoidal tapers screw thread, and during enforcement, male thread first coordinates with box thread and tightens by workman, and to make at the bottom of box thread crest and male thread tooth and an inclined side close contact, now, male and female screw thread end face has preset clearance.Then with machine by screwed tight, preset clearance is diminished gradually, until male and female screw thread end contact, now, threading path, to generation extruding, at the bottom of box thread crest and male thread tooth and one of them side interference fit, coordinates tighter.
The foregoing is only preferred embodiment of the present utility model, not in order to limit the utility model, all within spirit of the present utility model and principle, any amendment done, equivalent replacement, improvement etc., all should be included within protection domain of the present utility model.
Claims (3)
1. helicoid hydraulic motor housing connects a trapezoidal tapers screw thread, and it is characterized in that the tooth form of described screw thread is trapezoidal, thread form angle a is 3-15 degree, and threaded engagement end face is provided with preset clearance.
2. helicoid hydraulic motor housing as claimed in claim 1 connects trapezoidal tapers screw thread, it is characterized in that: described trapezoidal tooth form surrounding is provided with fillet.
3. helicoid hydraulic motor housing as claimed in claim 1 connects trapezoidal tapers screw thread, it is characterized in that: during the cooperation of described screw thread at the bottom of box thread crest and male thread tooth and an inclined side-fit.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520279741.8U CN204609791U (en) | 2015-05-05 | 2015-05-05 | Helicoid hydraulic motor housing connects trapezoidal tapers screw thread |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520279741.8U CN204609791U (en) | 2015-05-05 | 2015-05-05 | Helicoid hydraulic motor housing connects trapezoidal tapers screw thread |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204609791U true CN204609791U (en) | 2015-09-02 |
Family
ID=53962363
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520279741.8U Active CN204609791U (en) | 2015-05-05 | 2015-05-05 | Helicoid hydraulic motor housing connects trapezoidal tapers screw thread |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204609791U (en) |
-
2015
- 2015-05-05 CN CN201520279741.8U patent/CN204609791U/en active Active
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant |