CN202768596U - Countersunk head nut and special spanner - Google Patents
Countersunk head nut and special spanner Download PDFInfo
- Publication number
- CN202768596U CN202768596U CN 201220464365 CN201220464365U CN202768596U CN 202768596 U CN202768596 U CN 202768596U CN 201220464365 CN201220464365 CN 201220464365 CN 201220464365 U CN201220464365 U CN 201220464365U CN 202768596 U CN202768596 U CN 202768596U
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- nut
- spanner
- special spanner
- special
- shaped
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- 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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- Details Of Spanners, Wrenches, And Screw Drivers And Accessories (AREA)
Abstract
The utility model belongs to fasteners, and particularly provides a line-shaped countersunk head nut and a special spanner. The nut and the special spanner are used in a matching mode. The appearance of the nut is in a bowl shape. The diameter of the upper surface of the nut is larger than that of the lower surface of the nut. The outer circle between the upper surface and the lower surface of the nut is in arc-shaped transition. A central hole of the nut is provided with inner threads. A line-shaped groove or a cross-shaped groove is formed on the upper surface of the nut. A line-shaped conical head is arranged at the upper end of a cylindrical spanner rod of the special spanner. The thickness of the line-shaped conical head is matched with the width of the groove of the nut. A screw hole is formed in the center of the upper portion of the spanner rod. The lower end of the spanner rod and a drillstock are in an integral structure. A fixed lock groove which is used for being connected with an electric tool is arranged at the lower end of the drillstock. The countersunk head nut and the special spanner have the advantages that the nut is used for fixing when a high polymer plastic plate lining is used on the inner wall faces of a coal bunker and a hopper so that the high polymer plastic plate lining can be completely hidden in base materials, large pulling force can be borne, the special using requirements of the nut can be met, and meanwhile abrasion loss is lowered, and the service life is prolonged. When the special spanner is used, working efficiency can be obviously improved, operation is convenient and fast, and the nut cannot be damaged.
Description
Technical field
The utility model belongs to the fastening piece class, specifically a kind of word countersunk nut and special spanner thereof.
Background technique
In recent years, for the coal bunker of the industries such as power plant, colliery, cement plant, the hopper situation in the sticking storehouse of ubiquity and stifled storehouse in use, the existing many enterprises of China have used polymer plastic flitch lining at coal bunker, hopper internal face, solve serious stifled storehouse, sticking storehouse problem, obtained good economic benefit and social benefit.At coal bunker and hopper lining polymer plastic flitch, past is adopted nailing or common EXPANSION ANCHOR BOLTS mostly, as fastener material, these two kinds of fixation methods, there are the following problems: the nailing impulse force is too quickly, cause the cement bulkhead to loosen, destroy the bulkhead structure, generally can only use about 2 months, nailing is short straight in addition, and the head of a nail is tiny, easily from bulkhead, extract, cause the polymer plastic flitch to come off.Use common EXPANSION ANCHOR BOLTS, although increased the fixing soundness of sheet material, plain nut protrudes from the plate face, can become new sticking stifled source, and simultaneously nut wearing and tearing are very fast, also very easily cause sheet material to come off, and general maximum uses are about 1 year.In addition, in some specific (special) requirements occasions, nut need to be hidden in the base material fully, thereby not affect the security of operation of equipment, plain bolt but can't be accomplished.
Summary of the invention
The purpose of this utility model is an a kind of word countersunk nut of design, and this nut can be hidden in the counterbore of sheet material fully, and the surface keeps same plane with sheet material, thereby does not affect the security of operation of equipment, and this nut uses special spanner to dismantle.
The technical solution of the utility model is: this device is comprised of matching used nut and special spanner, the nut profile is bowl-shape, and the upper surface diameter is greater than the lower surface diameter, the curved transition of the cylindrical between the upper and lower surface, its center hole is internal thread, and upper surface has word groove or a cross recess; There is a word conehead cylinder type wrenching bar upper end of special spanner, the thickness of a word conehead and the recess width of above-mentioned nut coupling, and the wrenching bar central upper portion has a screw, and lower end and drillstock are structure as a whole, and the drillstock lower end is provided with the fixedly locked groove that connects electric tool.
The beneficial effects of the utility model: when coal bunker, hopper internal face use polymer plastic flitch lining, fix with this nut, it both had been hidden in the base material fully, can bears larger pulling force again, satisfy its Special use requirement, reduce simultaneously wear extent, prolonged working life.Use this special spanner, can obviously increase work efficiency, convenient to operation, can not damage nut.
Description of drawings
Accompanying drawing 2 is the utility model special spanner cross-sectional view.
Accompanying drawing 3 is special spanner plan views.
Embodiment
This device is comprised of matching used nut and special spanner, and the nut profile is bowl-shape, as shown in Figure 1, upper surface 6 diameters are greater than the lower surface diameter, cylindrical 7 curved transition between the upper and lower surface, its center hole is internal thread, upper surface has word groove 5 or a cross recess; Special spanner is shown in accompanying drawing 2, accompanying drawing 3, it cylinder type wrenching bar 2 upper ends one word conehead 1 is arranged, the thickness of one word conehead 1 and the groove of above-mentioned nut 5 width coupling, wrenching bar 2 central upper portion have a screw 3, lower end and drillstock 4 are structure as a whole, drillstock 4 lower ends are provided with the fixedly locked groove that connects electric tool, use with convenient special spanner is fixed on the electric tool.
Claims (1)
1. a countersunk nut and special spanner, this device is comprised of matching used nut and special spanner, it is characterized in that: the nut profile is bowl-shape, upper surface (6) diameter is greater than the lower surface diameter, the curved transition of cylindrical between the upper and lower surface (7), its center hole is internal thread, and upper surface has word groove (5) or a cross recess; There is a word conehead (1) cylinder type wrenching bar (2) upper end of special spanner, groove (5) the width coupling of the thickness of one word conehead (1) and above-mentioned nut, wrenching bar (2) central upper portion has a screw (3), lower end and drillstock (4) are structure as a whole, and drillstock (4) lower end is provided with the fixedly locked groove that connects electric tool.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220464365 CN202768596U (en) | 2012-09-13 | 2012-09-13 | Countersunk head nut and special spanner |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220464365 CN202768596U (en) | 2012-09-13 | 2012-09-13 | Countersunk head nut and special spanner |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202768596U true CN202768596U (en) | 2013-03-06 |
Family
ID=47775175
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220464365 Expired - Fee Related CN202768596U (en) | 2012-09-13 | 2012-09-13 | Countersunk head nut and special spanner |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202768596U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104626025A (en) * | 2014-12-30 | 2015-05-20 | 合肥鑫晟光电科技有限公司 | Torque wrench and friction processing equipment |
-
2012
- 2012-09-13 CN CN 201220464365 patent/CN202768596U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104626025A (en) * | 2014-12-30 | 2015-05-20 | 合肥鑫晟光电科技有限公司 | Torque wrench and friction processing equipment |
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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: 20130306 Termination date: 20150913 |
|
| EXPY | Termination of patent right or utility model |