CN209925407U - Bolt anti-loosening device - Google Patents
Bolt anti-loosening device Download PDFInfo
- Publication number
- CN209925407U CN209925407U CN201920329575.6U CN201920329575U CN209925407U CN 209925407 U CN209925407 U CN 209925407U CN 201920329575 U CN201920329575 U CN 201920329575U CN 209925407 U CN209925407 U CN 209925407U
- Authority
- CN
- China
- Prior art keywords
- bolt
- nut
- loosening
- hexagonal
- bolt rod
- 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.)
- Active
Links
Images
Landscapes
- Connection Of Plates (AREA)
Abstract
The utility model relates to a locking technique of bolt is applicable to various adjustments in the switch conversion equipment and often dismantles the locking of bolt, especially about a bolt locking device, characterized by: the anti-loosening device at least comprises a bolt rod (1), a nut (2), a loosening-proof cover (3) and a split pin (4); the bolt rod (1) is connected with the nut (2) through a screw, the anti-loosening cover (3) is inserted into a slotted nut groove (6) of the nut (2) through two symmetrical small claws (5), and a hexagonal hole (8) at the small hexagonal part of the bolt rod (1) is exposed; the cotter pin (4) is inserted into the hexagonal hole (8). The bolt anti-loosening device is reliable and convenient to observe and disassemble.
Description
Technical Field
The utility model relates to a locking technique of bolt is applicable to various adjustments in the switch conversion equipment and often dismantles the locking of bolt, especially about a bolt locking device.
Background
The turnout is an indispensable component of railway switching equipment, the turnout switching equipment is connected with the turnout by using bolt fasteners, on-site maintenance needs to frequently adjust each rod piece, the condition that a switch machine indication notch meets standard requirements is ensured, and each bolt fastener needs to be frequently disassembled, so that a bolt needs to be reliably and simply anti-loosening measures, and frequent adjustment is facilitated. The existing bolt anti-loosening measure is that an anti-loosening cap with twelve square inside and hexagonal bottom is sleeved on a bolt rod with a hexagonal end, the twelve square inside the anti-loosening cap is buckled with a nut, the hexagonal bottom of the anti-loosening cap is matched with the hexagonal bolt rod, and finally a cotter pin penetrates into a hole at the tail of a screw rod to prevent the anti-loosening cap from being separated. Some bolt shanks in scene expose the overlength, and the locking cap can not be detained on the nut, perhaps when the bolt shank is vertical the locking cap free fall detains completely on the nut, because of there being the clearance between locking cap and nut, sometimes because of the vibration of crossing the car, the cooperation clearance further increase that the vibration wearing and tearing lead to locking cap and nut, bolt pretightning force descends and then takes off, and the locking cap is directly detained and is sheltered from it on the nut, leads to the on-the-spot maintenance can not in time discover the nut pine and take off.
SUMMERY OF THE UTILITY MODEL
The utility model aims at providing a reliable, be convenient for observe and dismantle bolt locking device.
The utility model aims at realizing like this, providing a bolt locking device, characterized by: the anti-loosening device at least comprises a bolt rod, a nut, a locking cover and a split pin; the bolt rod is connected with the nut through a screw, and the anti-loosening cover is inserted into a slotted nut groove of the nut through two symmetrical small claws, so that a hexagonal hole at the small hexagonal part of the bolt rod is exposed; the cotter pin is inserted into the hexagonal hole.
One end of the bolt rod is a big hexagon, and the other end of the bolt rod is a small hexagon.
The outer diameter of the maximum small hexagon is the same as the outer diameter of the middle bolt rod.
The small hexagonal part is provided with a hexagonal hole.
One end of the nut is hexagonal, and one end of the nut is provided with six slotted nut grooves which are uniformly distributed on the hexagonal side and the hexagonal side.
One side of the anti-loosening cover is provided with two symmetrical small claws.
The bottom of the anti-loosening cover is twelve.
The utility model discloses a theory of operation is: when the nut is loosened, one side of the anti-loosening cover is provided with two small claws, the two small claws of the anti-loosening cover are clamped in the nut, and the twelve square of the bottom of the anti-loosening cover is matched with the hexagonal of the bolt rod to prevent the nut and the bolt rod from rotating relatively, so that the anti-loosening effect is realized.
Compared with the prior anti-loosening structure, the utility model has the advantages that:
1. the machining precision of the anti-loosening cover is controlled, and the fit clearance between the anti-loosening cover and the nut is reduced.
2. The locking structure is reasonable, the weight is light, the manufacturability is good, and the manufacture is easy.
3. The anti-loosening covers with different specifications, lengths and sizes solve the problem that the anti-loosening cap cannot be buckled on the nut due to the fact that the bolt rod is exposed too long.
4. The locking cover is better than the slotted nut and the cotter pin for locking after rotating 30 degrees each time.
5. The problem that the bolt pretightening force can not be timely found to be reduced and loosened due to the shielding of the anti-loosening cap is avoided.
The invention will be further explained with reference to the drawings of the embodiments.
Drawings
Fig. 1 is a schematic structural diagram of an embodiment of the present invention;
FIG. 2 is a schematic view of a bolt shank configuration;
FIG. 3 is a schematic view of a nut construction;
FIG. 4 is a schematic view of the anti-loosening cover;
fig. 5 is a left side view of fig. 4.
In the figure: 1. The bolt rod 2, the nut 3, the anti-loosening cover 4 and the split pin; 5. two symmetrical small claws, 6, a slotted nut groove, 7, a twelve-square hole, 8 and a hexagonal hole.
Detailed Description
As shown in fig. 1 and 2, the utility model relates to a bolt locking device, at least, contains: the bolt comprises a bolt rod 1, a nut 2, a locking cover 3 and a split pin 4; one end of the bolt rod 1 is a big hexagon, the other end of the bolt rod is a small hexagon, the maximum outer diameter of the small hexagon is the same as that of the bolt rod 1 in the middle, and a hexagonal hole 8 is formed in the small hexagon.
As shown in figure 3, one end of the nut 2 is hexagonal, and one end of the nut 2 is provided with six slotted nut grooves 6 which are divided into six sides and six sides.
As shown in fig. 4 and 5, fig. 5 is a left side view of fig. 4; one side of the anti-loosening cover 3 is provided with two symmetrical small claws 5, and the bottom of the anti-loosening cover is a twelve-square 7; the bolt rod 1 is connected with the nut 2 through a screw, and the anti-loosening cover 3 is inserted into a slotted nut groove 6 of the nut 2 through two symmetrical small claws 5, so that a hexagonal hole 8 at the small hexagonal part of the bolt rod 1 is exposed; the cotter pin 4 is inserted into the hexagonal hole 8.
During assembly, after a workpiece is fastened by the bolt rod 1 and the nut 2, the locking cover 3 is sleeved on the bolt rod 1 with the hexagonal end part, two symmetrical small claws 5 of the locking cover 3 are clamped into the slotted nut groove 6, and the split pin 4 penetrates into a hexagonal hole 8 processed by the bolt rod 1 to prevent the locking cover 3 from falling off.
When the nut 2 is loosened, two symmetrical small claws 5 are arranged on one side of the anti-loosening cover 3, the two symmetrical small claws 5 of the anti-loosening cover 3 are clamped in the nut 2, and the bottom twelve square 7 is matched with the hexagonal shape of the bolt rod 1 to prevent the nut 2 and the bolt rod 1 from rotating relatively, so that anti-loosening is realized.
The utility model discloses after with the bolt bar 1 of transformation and slotted nut groove 6 with the fastener pretension, make 3 covers of locking lid on bolt bar 1, the twelve sides 7 of 3 bottom processing of locking lid and the hexagonal of 1 tip processing of bolt bar cooperate, two paws 5 card income slotted nut grooves 6 of 3 symmetries of locking lid, just so prevented not hard up of nut 2, insert split pin 4 in the aperture of screw rod tip hexagonal at last, prevent that locking lid 3 from droing.
Claims (7)
1. The utility model provides a bolt locking device which characterized by: the anti-loosening device at least comprises a bolt rod (1), a nut (2), a loosening-proof cover (3) and a split pin (4); the bolt rod (1) is connected with the nut (2) through a screw, the anti-loosening cover (3) is inserted into a slotted nut groove (6) of the nut (2) through two symmetrical small claws (5), and a hexagonal hole (8) at the small hexagonal position of the bolt rod (1) is exposed; the cotter pin (4) is inserted into the hexagonal hole (8).
2. The anti-loosening device for the bolt of claim 1, wherein: one end of the bolt rod (1) is a big hexagon, and the other end of the bolt rod is a small hexagon.
3. The anti-loosening device for the bolt of claim 2, wherein: the outer diameter of the maximum small hexagon is the same as the outer diameter of the middle bolt rod (1).
4. The anti-loosening device for the bolt of claim 2, wherein: the small hexagonal part is provided with a hexagonal hole (8).
5. The anti-loosening device for the bolt of claim 1, wherein: one end of the nut (2) is hexagonal, and six slotted nut grooves (6) are formed in one end of the nut (2) and are evenly distributed on the hexagonal side and the hexagonal side.
6. The anti-loosening device for the bolt of claim 1, wherein: one side of the anti-loosening cover (3) is provided with two symmetrical small claws (5).
7. The anti-loosening device for the bolt of claim 6, wherein: the bottom of the anti-loosening cover (3) is twelve-square (7).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920329575.6U CN209925407U (en) | 2019-03-15 | 2019-03-15 | Bolt anti-loosening device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920329575.6U CN209925407U (en) | 2019-03-15 | 2019-03-15 | Bolt anti-loosening device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN209925407U true CN209925407U (en) | 2020-01-10 |
Family
ID=69069722
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201920329575.6U Active CN209925407U (en) | 2019-03-15 | 2019-03-15 | Bolt anti-loosening device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN209925407U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112413054A (en) * | 2020-11-25 | 2021-02-26 | 国网江苏省电力有限公司泰州供电分公司 | Temporary cable traction and tensioning device |
-
2019
- 2019-03-15 CN CN201920329575.6U patent/CN209925407U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112413054A (en) * | 2020-11-25 | 2021-02-26 | 国网江苏省电力有限公司泰州供电分公司 | Temporary cable traction and tensioning device |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN209925407U (en) | Bolt anti-loosening device | |
| RU2013102515A (en) | METHOD FOR CONNECTING A HOLLOW ELEMENT, SUCH AS A HOLE RIVET OR WRENCH, TO A COMPONENT CONSISTING OF COMPOSITE MATERIAL | |
| WO2015014346A1 (en) | Eye bolt with securing bolt and recess | |
| CN203245257U (en) | Puncher pin rapidly replacing device | |
| CN202480051U (en) | Fast-assembly tool for self-tapping screw-thread bushing | |
| CN204175749U (en) | A kind of captive screw of fast demountable | |
| CN107351021B (en) | Pin removal and method of pulling pin | |
| JP6588326B2 (en) | Retaining structure for tightening nut in portable power working machine and method for assembling the tightening nut | |
| JP6267955B2 (en) | Attachment type screw member holder | |
| JP5712408B2 (en) | Locking bolt | |
| CN210599765U (en) | Anti-drop stud | |
| CN205001347U (en) | Bolt with reinforcing apparatus | |
| CN207309846U (en) | A kind of fast dismounting device for disc shear edge | |
| CN209671379U (en) | A kind of anti-corrosion hexagon socket cap head screw | |
| CN215148743U (en) | Tool for taking out nut clamped in sleeve | |
| CN206495864U (en) | A kind of screw thread shop bolt | |
| JP5918428B1 (en) | Fall prevention tool | |
| CN205464647U (en) | Lathe is with automatic mantle fiber device | |
| CN205184619U (en) | Combined type spanner | |
| CN204492575U (en) | Fastening devices between a kind of section bar | |
| CN217676487U (en) | Dismantle guiding mechanism and adopt this guiding mechanism's tower machine to attach wall round pin detacher | |
| CN205254842U (en) | Clamping fixture | |
| CN207593642U (en) | Radome of fighter tightening tool | |
| CN210121817U (en) | Lever lock | |
| CN209943313U (en) | Outer hexagonal nut |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |