CN111322299A - Dedicated bolt assembly on explosion-proof fan - Google Patents
Dedicated bolt assembly on explosion-proof fan Download PDFInfo
- Publication number
- CN111322299A CN111322299A CN202010126179.0A CN202010126179A CN111322299A CN 111322299 A CN111322299 A CN 111322299A CN 202010126179 A CN202010126179 A CN 202010126179A CN 111322299 A CN111322299 A CN 111322299A
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- CN
- China
- Prior art keywords
- stud
- nut
- bolt head
- face
- explosion
- 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.)
- Pending
Links
- 238000007493 shaping process Methods 0.000 claims 1
- 238000009434 installation Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000037431 insertion Effects 0.000 description 1
- 238000003780 insertion Methods 0.000 description 1
- 230000003993 interaction Effects 0.000 description 1
Images
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16B—DEVICES FOR FASTENING OR SECURING CONSTRUCTIONAL ELEMENTS OR MACHINE PARTS TOGETHER, e.g. NAILS, BOLTS, CIRCLIPS, CLAMPS, CLIPS OR WEDGES; JOINTS OR JOINTING
- F16B35/00—Screw-bolts; Stay-bolts; Screw-threaded studs; Screws; Set screws
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16B—DEVICES FOR FASTENING OR SECURING CONSTRUCTIONAL ELEMENTS OR MACHINE PARTS TOGETHER, e.g. NAILS, BOLTS, CIRCLIPS, CLAMPS, CLIPS OR WEDGES; JOINTS OR JOINTING
- F16B23/00—Specially shaped nuts or heads of bolts or screws for rotations by a tool
- F16B23/0007—Specially shaped nuts or heads of bolts or screws for rotations by a tool characterised by the shape of the recess or the protrusion engaging the tool
- F16B23/0015—Specially shaped nuts or heads of bolts or screws for rotations by a tool characterised by the shape of the recess or the protrusion engaging the tool substantially rectangular, e.g. one-slot head
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16B—DEVICES FOR FASTENING OR SECURING CONSTRUCTIONAL ELEMENTS OR MACHINE PARTS TOGETHER, e.g. NAILS, BOLTS, CIRCLIPS, CLAMPS, CLIPS OR WEDGES; JOINTS OR JOINTING
- F16B39/00—Locking of screws, bolts or nuts
- F16B39/02—Locking of screws, bolts or nuts in which the locking takes place after screwing down
- F16B39/12—Locking of screws, bolts or nuts in which the locking takes place after screwing down by means of locknuts
- F16B39/16—Locking of screws, bolts or nuts in which the locking takes place after screwing down by means of locknuts in which the screw-thread of the locknut differs from that of the nut
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Structures Of Non-Positive Displacement Pumps (AREA)
Abstract
The invention discloses a special bolt assembly for an explosion-proof fan, which comprises a circular bolt head, wherein a first stud is formed in the center of the front end face of the bolt head, a second stud is formed on the front end face of the first stud, and the screw thread turning direction of the second stud is opposite to that of the first stud; a first nut is screwed on the first stud of the bolt head, and a second nut is screwed on the second stud; an annular groove is formed in the front end face of the bolt head on the periphery of the first stud, and a permanent magnet ring is fixedly inserted into the groove of the bolt head.
Description
Technical Field
The invention relates to the technical field of fans, in particular to a special bolt assembly for an explosion-proof fan.
Background
Axial fans are widely used, namely, air flows in the same direction as the axes of the fan blades, such as electric fans, and fans outside air conditioners are running fans in an axial flow mode, so the fans are called axial flow type, and the air flows parallel to the fan axes. The existing axial flow fan is generally provided with an air duct, a motor of the fan is arranged in the air duct, the existing installation mode of the motor generally adopts an annular ferrule, the annular ferrule is sleeved on a shell of the motor and is fixed with the motor through a bolt, meanwhile, a plurality of support rods are welded on the outer wall of the annular ferrule, and the outer ends of the support rods are generally welded and fixed on the inner wall of the air duct or fixed on the air duct through a bolt assembly; when the air duct is installed on the existing standard bolt assembly, a hand is required to extend to the inner side of the volute to fix the nut, so that the bolt can be inserted from the outer side of the volute, and the bolt is matched with the nut to realize the fixed connection between the air duct and the volute; the installation of the fastening bolts is troublesome.
The invention content is as follows:
the invention aims to overcome the defects in the prior art, and provides a bolt assembly special for an explosion-proof fan.
In order to achieve the purpose, the technical scheme adopted by the invention is as follows:
a bolt assembly special for an explosion-proof fan comprises a round bolt head, wherein a first stud is formed in the center of the front end face of the bolt head, a second stud is formed on the front end face of the first stud, and the screw thread turning direction of the second stud is opposite to that of the first stud; a first nut is screwed on the first stud of the bolt head, and a second nut is screwed on the second stud; an annular groove is formed in the front end face of the bolt head on the periphery of the first stud, and a permanent magnet ring is fixedly inserted into the groove of the bolt head.
Preferably, the width of the permanent magnet ring is not greater than the depth of the groove in the bolt head.
Preferably, a spherical cap is formed on the rear end face of the bolt head, and a linear clamping groove is formed on the cap.
Preferably, the central axis of the bolt head, the central axis of the first stud and the central axis of the second stud are on the same straight line, and the diameter of the second stud is smaller than that of the first stud.
Preferably, the first nut and the second nut both adopt outer hexagon nuts, the second nut abuts against the front end face of the first stud, an annular ferrule is formed on the front end face of the second nut, the ferrule is inserted and sleeved on the second stud, and the front end face of the ferrule and the front end face of the second stud are in the same plane.
Preferably, a socket with a regular hexagon shape is formed on the front end face of the second stud.
Preferably, a washer is formed on the end face of the first nut on the side close to the bolt head, and the diameter of the outer wall of the washer is larger than that of a circumscribed circle of the first nut.
Preferably, the length of the first stud on the bolt head is greater than the thickness of the first nut.
The invention has the beneficial effects that:
(1) the bolts adopted by the spiral case can be reversely inserted and adsorbed on the spiral case, so that the nuts are conveniently fastened from the outer side of the spiral case, and the spiral case is fixedly connected with the air guide cover.
(2) The nut or bolt in the bolt assembly adopted by the utility model can be used as a common bolt and nut.
Drawings
FIG. 1 is a schematic perspective view of the present invention;
FIG. 2 is a schematic bottom view of the present invention;
FIG. 3 is a schematic cross-sectional view taken along line A-A of FIG. 2;
fig. 4 is a front view of the present invention.
In the figure: 1. a bolt head; 11. a first stud; 12. a second stud; 13. a cap; 14. a card slot; 15. a groove; 16. a jack; 2. a first nut; 21. a gasket; 3. a second nut; 31. a ferrule; 4. a permanent magnet ring.
Detailed Description
Example (b): as shown in fig. 1 to 4, a special bolt assembly for an explosion-proof fan comprises a circular bolt head 1, wherein a first stud 11 is formed in the center of the front end surface of the bolt head 1, a second stud 12 is formed on the front end surface of the first stud 11, and the screw thread direction of the second stud 12 is opposite to that of the first stud 11; a first nut 2 is screwed on a first stud 11 of the bolt head 1, and a second nut 3 is screwed on a second stud 12; an annular groove 15 is formed in the front end face of the bolt head 1 on the periphery of the first stud 11, and a permanent magnet ring 4 is fixedly inserted into the groove 15 of the bolt head 1.
Preferably, the width of the permanent magnet ring 4 is not greater than the depth of the groove 15 on the bolt head 1.
Preferably, a spherical cap 13 is formed on the rear end surface of the bolt head 1, and a linear slot 14 is formed on the cap 13.
Preferably, the central axis of the bolt head 1, the central axis of the first stud 11 and the central axis of the second stud 12 are on the same straight line, and the diameter of the second stud 12 is smaller than that of the first stud 11.
Preferably, the first nut 2 and the second nut 3 both adopt outer hexagon nuts, the second nut 3 abuts against the front end face of the first stud 11, an annular ferrule 31 is formed on the front end face of the second nut 3, the ferrule 31 is inserted and sleeved on the second stud 12, and the front end face of the ferrule 31 and the front end face of the second stud 12 are in the same plane.
Preferably, a socket 16 with a regular hexagonal deformation is formed on the front end surface of the second stud 12.
Preferably, a washer 21 is formed on the end surface of the first nut 2 on the side close to the bolt head 1, and the diameter of the outer wall of the washer 21 is larger than the diameter of the circumscribed circle of the first nut 2.
Preferably, the length of the first stud 11 on the bolt head 1 is greater than the thickness of the first nut 2.
The working principle is as follows: the invention relates to a special bolt assembly for an explosion-proof fan, which mainly comprises a bolt part with a bolt head 1 structure, a first nut 2 and a second nut 3, and the specific connection mode is as follows:
before the wind scooper is not installed, a bolt head 1 can be inserted on the volute around the air inlet, the bolt head 1 is located on the inner side of the volute, a first stud 11 and a second stud 12 are both located on the outer side of the volute, then the wind scooper is installed, the first stud 11 and the second stud 12 penetrate through a flange of the wind scooper, then a first nut 2 and a second nut 3 are sequentially screwed, and due to the fact that the spiral directions of the first nut 2 and the second nut 3 are opposite, the first nut 2 can be screwed and fastened through interaction, and the wind scooper is fixed on the outer side of the volute;
in the absence of the second nut 3, the first nut 2 can be tightened by using an allen wrench in cooperation with the regular hexagonal insertion hole 16.
The examples are intended to illustrate the invention, but not to limit it. The described embodiments may be modified by those skilled in the art without departing from the spirit and scope of the present invention, and therefore, the scope of the appended claims should be accorded the full scope of the invention as set forth in the appended claims.
Claims (8)
1. The utility model provides a dedicated bolt subassembly on explosion-proof fan, includes circular shape bolt head (1), and the central shaping of terminal surface has first double-screw bolt (11), its characterized in that before bolt head (1): a second stud (12) is formed on the front end face of the first stud (11), and the screw thread turning direction of the second stud (12) is opposite to that of the first stud (11); a first nut (2) is screwed on a first stud (11) of the bolt head (1), and a second nut (3) is screwed on a second stud (12); an annular groove (15) is formed in the front end face of the bolt head (1) on the periphery of the first stud (11), and a permanent magnet ring (4) is fixedly inserted into the groove (15) of the bolt head (1).
2. The special bolt assembly for the explosion-proof fan according to claim 1, is characterized in that: the width of the permanent magnet ring (4) is not more than the depth of the groove (15) on the bolt head (1).
3. The special bolt assembly for the explosion-proof fan according to claim 1, is characterized in that: a spherical cap (13) is formed on the rear end face of the bolt head (1), and a linear clamping groove (14) is formed on the cap (13).
4. The special bolt assembly for the explosion-proof fan according to claim 1, is characterized in that: the central axis of the bolt head (1), the central axis of the first stud (11) and the central axis of the second stud (12) are on the same straight line, and the diameter of the second stud (12) is smaller than that of the first stud (11).
5. The special bolt assembly for the explosion-proof fan according to claim 4, wherein: the first nut (2) and the second nut (3) both adopt outer hexagon nuts, the second nut (3) abuts against the front end face of the first stud (11), an annular ferrule (31) is formed on the front end face of the second nut (3), the ferrule (31) is inserted and sleeved on the second stud (12), and the front end face of the ferrule (31) and the front end face of the second stud (12) are in the same plane.
6. The special bolt assembly for the explosion-proof fan according to claim 1, is characterized in that: and a socket (16) with a regular-six deformation shape is formed on the front end surface of the second stud (12).
7. The special bolt assembly for the explosion-proof fan according to claim 4, wherein: a washer (21) is formed on the end face of the first nut (2) close to one side of the bolt head (1), and the diameter of the outer wall of the washer (21) is larger than that of the circumscribed circle of the first nut (2).
8. The special bolt assembly for the explosion-proof fan according to claim 1, is characterized in that: the length of the first stud (11) on the bolt head (1) is larger than the thickness of the first nut (2).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010126179.0A CN111322299A (en) | 2020-02-28 | 2020-02-28 | Dedicated bolt assembly on explosion-proof fan |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010126179.0A CN111322299A (en) | 2020-02-28 | 2020-02-28 | Dedicated bolt assembly on explosion-proof fan |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN111322299A true CN111322299A (en) | 2020-06-23 |
Family
ID=71167353
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202010126179.0A Pending CN111322299A (en) | 2020-02-28 | 2020-02-28 | Dedicated bolt assembly on explosion-proof fan |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN111322299A (en) |
Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH1073118A (en) * | 1996-08-28 | 1998-03-17 | Mino Kogyo Kk | Bolt and nut |
| CN1609464A (en) * | 2004-11-10 | 2005-04-27 | 孙海鑫 | Bolt with nuts at both ends |
| CN200961612Y (en) * | 2006-10-19 | 2007-10-17 | 陈崇昆 | Magnetically-positioning bolt |
| CN201221545Y (en) * | 2008-05-29 | 2009-04-15 | 北京三维正基科技有限公司 | Double-cap anti-loose bolt |
| CN203098532U (en) * | 2013-01-25 | 2013-07-31 | 孙晓东 | Left and right screwing thread bolt |
| CN203201943U (en) * | 2013-04-01 | 2013-09-18 | 宁波金鹏高强度紧固件有限公司 | Bolt with magnetic block |
| CN203548493U (en) * | 2013-10-30 | 2014-04-16 | 浙江群展精密紧固件有限公司 | Bolt with double hexagon bolt heads |
| CN205715164U (en) * | 2016-04-12 | 2016-11-23 | 中国第一汽车股份有限公司 | Self-locking type check bolt assembly |
-
2020
- 2020-02-28 CN CN202010126179.0A patent/CN111322299A/en active Pending
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH1073118A (en) * | 1996-08-28 | 1998-03-17 | Mino Kogyo Kk | Bolt and nut |
| CN1609464A (en) * | 2004-11-10 | 2005-04-27 | 孙海鑫 | Bolt with nuts at both ends |
| CN200961612Y (en) * | 2006-10-19 | 2007-10-17 | 陈崇昆 | Magnetically-positioning bolt |
| CN201221545Y (en) * | 2008-05-29 | 2009-04-15 | 北京三维正基科技有限公司 | Double-cap anti-loose bolt |
| CN203098532U (en) * | 2013-01-25 | 2013-07-31 | 孙晓东 | Left and right screwing thread bolt |
| CN203201943U (en) * | 2013-04-01 | 2013-09-18 | 宁波金鹏高强度紧固件有限公司 | Bolt with magnetic block |
| CN203548493U (en) * | 2013-10-30 | 2014-04-16 | 浙江群展精密紧固件有限公司 | Bolt with double hexagon bolt heads |
| CN205715164U (en) * | 2016-04-12 | 2016-11-23 | 中国第一汽车股份有限公司 | Self-locking type check bolt assembly |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20200623 |