CN202065620U - Bottom angle adjusting screw of precision balance - Google Patents
Bottom angle adjusting screw of precision balance Download PDFInfo
- Publication number
- CN202065620U CN202065620U CN2011201659802U CN201120165980U CN202065620U CN 202065620 U CN202065620 U CN 202065620U CN 2011201659802 U CN2011201659802 U CN 2011201659802U CN 201120165980 U CN201120165980 U CN 201120165980U CN 202065620 U CN202065620 U CN 202065620U
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- CN
- China
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- adjusting screw
- angle adjusting
- section
- hand wheel
- screw
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- Expired - Fee Related
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Abstract
The utility model relates to a bottom angle adjusting screw of a precision balance, which comprises a screw stem. The lower end of the screw stem is provided with a hand wheel coaxial with the screw stem, the hand wheel is divided into an upper section, a middle section and a lower section, the upper section is provided with a round platform, a bus on the side face of the round platform adopts an inward concave arc, the side face of the round platform is uniformly provided with a plurality of half-ellipsoidal bulges along the circumferential direction, the middle section is provided with a cylinder, the circumference of the cylinder is uniformly provided with a plurality of inward concave arc-shaped surfaces, the lower section adopts a cylindrical boss arranged under the middle section, the lower bottom surface and the circumferential surface of the cylindrical boss are provided with an arc-shaped chamfer, and the radius of the arcs of the chambers is equal to the height of the boss. When the bottom angle adjusting screw is used, the screw stem is screwed in a nut at one of the four corners on the lower surface of the base of the precision balance. Since the hand wheel is divided into the upper section, the middle section and the lower section, the bottom angle adjusting screw is attractive. The cylinder on the middle section of the hand wheel is uniformly provided with the inward concave arc-shaped surfaces along the circumference, the bottom angle adjusting screw can be handheld comfortably and used conveniently. Since the circumference of the lower section is provided with the boss with the chamfers, rotation is facilitated. With the half-ellipsoidal bulges uniformly arranged along the circumferential direction on the side face of the round platform, the rotation of the hand wheel can be facilitated, and the efficiency of adjustment can be increased.
Description
Technical field
The utility model relates to the adjusting screw at a kind of precision balance base angle, the handwheel of particularly a kind of precision balance base angle adjusting screw.
Background technique
Precision balance has the base of level, there is vertical column at the middle part on plane on the base, there is the crossbeam that can swing the column upper end, dish is hung at the two ends of crossbeam, level indicator is arranged above the base, the plane is out-of-level and produce weighing error on the balance, during precision balance work, require the last plane of base to be horizontal, in order to regulate planar horizontal on the base, at sky flat bed four jiaos vertical adjusting screw is arranged, the adjusting screw that day flat bed is four jiaos has screw rod, there is the cylindrical handwheel with screw coaxial the lower end of screw rod, and the circumference of cylindrical handwheel has the annular knurl tooth that is suitable for rotating by hand.In the prior art, the going to the bottom of the cylindrical handwheel in screw rod lower end of day four jiaos of adjusting screw of flat bed is planes, and the angle that the following bottom plane of handwheel and the circumferential surface of handwheel intersect is the right angle, and the annular knurl tooth is more shallow tooth.Four jiaos of adjusting screw of this day flat bed are the planes because of going to the bottom, and the annular knurl tooth has only one deck, and the annular knurl tooth is more shallow tooth, is not very convenient, smooth and easy when saving with hand adjustment, influences the efficient of adjusting work.
Summary of the invention
The purpose of this utility model is in order to overcome above-mentioned deficiency, when proposing a kind of adjusting easily, precision balance base angle adjusting screw smoothly.
The utility model is realized with the following method.
Precision balance base angle adjusting screw has screw rod, there is the handwheel with screw coaxial the lower end of screw rod, handwheel has three sections of upper, middle and lower, epimere is a round platform, the bus of frustum cone side is the circular arc of indent, along the circumferential direction be evenly equipped with semielliptical shape projection on the frustum cone side, the stage casing is a cylinder, the circumferential surface of cylinder is evenly equipped with the arc surface of indent, hypomere is the cylindrical boss below the stage casing, the bottom surface of cylindrical boss and the circumferential surface of cylindrical boss have the circular arc chamfering, and the radius of chamfering circular arc is identical with the height of boss.
During use, the screw rod of the utility model top is spun on below the precision balance base in four jiaos the nut, rotation hand wheel can make the screw rod indentation and stretches out, and is used to regulate the level of base.
Handwheel of the present utility model has three sections of upper, middle and lower, specious, handwheel stage casing cylinder is uniformly distributed with the arc surface of indent along the circumference, hand-held comfortable, convenient to power, the hypomere circumference has the boss smooth rotation of chamfering, along the circumferential direction uniform semielliptical shape projection on frustum cone side, when rotation hand wheel, have booster action, the efficient of adjusting work is improved.
Below in conjunction with accompanying drawing, the utility model is further described.
Description of drawings
Fig. 1 is the main cross-sectional schematic according to a kind of precision balance base angle adjusting screw of invention scheme proposition of the present utility model;
Fig. 2 is the side cross-sectional schematic of Fig. 1;
Fig. 3 is the schematic top plan view of Fig. 1.
Embodiment
Among Fig. 1 ~ Fig. 3, precision balance base angle adjusting screw has screw rod 1, there is the handwheel 2 with screw coaxial the lower end of screw rod, on handwheel has, in, following three section 3,4,5, epimere is a round platform, the bus 6 of frustum cone side is the circular arc of indent, along the circumferential direction be evenly equipped with six semielliptical shape projectioies 7 on the frustum cone side, the stage casing is a cylinder, the circumferential surface of cylinder is evenly equipped with the arc surface 8 of 12 indents, hypomere is the cylindrical boss below the stage casing, and the bottom surface of cylindrical boss and the circumferential surface of cylindrical boss have circular arc chamfering 9, and the radius of chamfering circular arc is identical with the height of boss.
Claims (1)
1. precision balance base angle adjusting screw, screw rod is arranged, there is the handwheel with screw coaxial the lower end of screw rod, it is characterized in that: handwheel has three sections of upper, middle and lower, epimere is a round platform, the bus of frustum cone side is the circular arc of indent, along the circumferential direction be evenly equipped with semielliptical shape projection on the frustum cone side, the stage casing is a cylinder, the circumferential surface of cylinder is evenly equipped with the arc surface of indent, hypomere is the cylindrical boss below the stage casing, and the bottom surface of cylindrical boss and the circumferential surface of cylindrical boss have the circular arc chamfering, and the radius of chamfering circular arc is identical with the height of boss.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011201659802U CN202065620U (en) | 2011-05-23 | 2011-05-23 | Bottom angle adjusting screw of precision balance |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011201659802U CN202065620U (en) | 2011-05-23 | 2011-05-23 | Bottom angle adjusting screw of precision balance |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202065620U true CN202065620U (en) | 2011-12-07 |
Family
ID=45059482
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011201659802U Expired - Fee Related CN202065620U (en) | 2011-05-23 | 2011-05-23 | Bottom angle adjusting screw of precision balance |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202065620U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| RU190746U1 (en) * | 2019-01-31 | 2019-07-11 | Свистунова Елена Анатольевна | Fastening element |
-
2011
- 2011-05-23 CN CN2011201659802U patent/CN202065620U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| RU190746U1 (en) * | 2019-01-31 | 2019-07-11 | Свистунова Елена Анатольевна | Fastening element |
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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: 20111207 Termination date: 20170523 |