CN201874959U - Mutually meshed left-handed and right-handed thread type anti-loosening structure - Google Patents
Mutually meshed left-handed and right-handed thread type anti-loosening structure Download PDFInfo
- Publication number
- CN201874959U CN201874959U CN2010206366324U CN201020636632U CN201874959U CN 201874959 U CN201874959 U CN 201874959U CN 2010206366324 U CN2010206366324 U CN 2010206366324U CN 201020636632 U CN201020636632 U CN 201020636632U CN 201874959 U CN201874959 U CN 201874959U
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- handed
- nut
- loosening
- piston
- handed thread
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Abstract
The utility model discloses a mutually meshed left-handed and right-handed thread type anti-loosening structure, which belongs to anti-loosening structures, and comprises a right-handed threaded nut is tightened on a piston rod, and a left-handed threaded nut is tightened on the outer side of the right-handed threaded nut. The design of the mutually meshed left-handed and right-handed thread type anti-loosening structure overcomes the drawback of poor anti-loosening effect of an original piston with a nut. According to the principle of mutually left-handed and right-handed thread retaining, reacting force is generated via end face contact and friction between nuts and between the nut and the piston so that the anti-loosening effect is achieved. The mutually meshed left-handed and right-handed thread type anti-loosening structure has the advantages that the anti-loosening structure is simple, and is fine in anti-loosening effect and convenient in mounting, loss due to overall failure of a hydraulic cylinder caused by anti-loosening failure of the piston and the nut is reduced greatly, and accordingly reliability and safety of the hydraulic cylinder are enhanced greatly.
Description
Technical field
The utility model relates to a kind of locking thread structure; Specifically be to revolve screw thread about a kind of to nibble the formula anti-loose structure mutually, be mainly used in rotary drilling rig pressurization, luffing and mast luffing hydraulic cylinder piston, nut anti-looseness.
Background technique
At present, domestic rotary drilling rig pressurization, luffing and mast luffing hydraulic cylinder piston, nut mostly adopt single start thread to tighten, dash a some anti-loose structure and since rotary drilling rig at work complete machine with strenuous vibration.And pressurize, luffing and mast luffing oil hydraulic cylinder are the bindiny mechanism that supports the mast motion, hydraulic cylinder piston rod is total to shake with the main frame vibrations in the work.Piston, nut very easily produce loosening, and piston, nut thread will lose efficacy in the course of time, cause oil hydraulic cylinder generation piston release failure, and causing complete machine can't work, and make troubles to construction operation, can cause security incident when serious.
Summary of the invention
The utility model provides and revolves screw thread about a kind of and nibble the formula anti-loose structure mutually, and purpose is to prevent piston, nut loosening, inefficacy, improves product reliability, Security and working life.
The utility model is realized with following technological scheme: revolve screw thread about a kind of and nibble the formula anti-loose structure mutually, comprise the right-handed thread nut that is tightened on the piston rod, also tightened left-hand nut in the outside of right-handed thread nut.
Revolve screw thread about a kind of and nibble the formula anti-loose structure mutually, comprise the right-handed thread piston that is tightened on the piston rod, left-hand nut has also been tightened in the outside of right-handed thread piston on piston rod.
Owing to adopted technique scheme, after normal right-handed thread nut or piston screw during the oil hydraulic cylinder assembling, left-hand nut screwed; Normal right-handed nut or piston will form left-handed power if any loosening when oil hydraulic cylinder uses, and will drive left-handed nut by the frictional force of two nut surface of contact, and left-handed power be the power that tightens of left-handed nut, owing to left-handed nut screws, will reach locking purpose.Said structure has thoroughly been avoided the oil hydraulic cylinder fault that causes because of nut, piston work relax, has not only improved reliability of products and Security, and has been beneficial to the lifting of product total quality level.
The beneficial effects of the utility model are: simple in structure, easy to process, anti-loosing effect is good, has improved reliability of products, Security and quality level greatly.
Description of drawings
Below in conjunction with drawings and Examples the utility model is further specified.
Fig. 1 is the utility model nut and nut anti-looseness structural representation.
Fig. 2 is the another example structure schematic representation of the utility model.
Among the figure: 1, right-handed thread nut, 2, left-hand nut, 3, the right-handed thread piston, 4, piston rod.
Embodiment
The anti-loose structure that nut as shown in Figure 1 cooperates with nut is tightened with right-handed thread nut 1 on piston rod 4, tightens with left-hand nut 2 in the outside of right-handed thread nut 1 again.After right-handed thread nut 1 screws during the oil hydraulic cylinder assembling, left-hand nut 2 is screwed; Right-handed thread nut 1 will form left-handed power if any loosening when oil hydraulic cylinder uses, frictional force by two nut surface of contact will drive left-hand nut 2, and left-handed power is the screwing force of left-hand nut 2, because left-hand nut 2 has screwed, to stop nut loosening, reach locking purpose.
The anti-loose structure that right-handed thread piston as shown in Figure 2 cooperates with nut has the right-handed thread piston 3 that is tightened on the piston rod on piston rod 4, there is the left-hand nut of tightening 2 in the outside of right-handed thread piston 3 on piston rod.Principle is the same.
Claims (2)
1. revolve screw thread about one kind and nibble the formula anti-loose structure mutually, it is characterized in that: comprise the right-handed thread nut (1) that is tightened on the piston rod (4), also tightened left-hand nut (2) in the outside of right-handed thread nut (1).
2. revolve screw thread about one kind and nibble the formula anti-loose structure mutually, it is characterized in that: comprise the right-handed thread piston (3) that is tightened on the piston rod, left-hand nut (2) has also been tightened in the outside of right-handed thread piston (3) on piston rod.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010206366324U CN201874959U (en) | 2010-12-02 | 2010-12-02 | Mutually meshed left-handed and right-handed thread type anti-loosening structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010206366324U CN201874959U (en) | 2010-12-02 | 2010-12-02 | Mutually meshed left-handed and right-handed thread type anti-loosening structure |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201874959U true CN201874959U (en) | 2011-06-22 |
Family
ID=44162877
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010206366324U Expired - Lifetime CN201874959U (en) | 2010-12-02 | 2010-12-02 | Mutually meshed left-handed and right-handed thread type anti-loosening structure |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201874959U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102927112A (en) * | 2012-10-27 | 2013-02-13 | 魏伯卿 | Capping type antiknock anti-loose pipe nut |
| CN104653582A (en) * | 2013-11-18 | 2015-05-27 | 张响红 | Screw with right-hand and left-hand threads |
-
2010
- 2010-12-02 CN CN2010206366324U patent/CN201874959U/en not_active Expired - Lifetime
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102927112A (en) * | 2012-10-27 | 2013-02-13 | 魏伯卿 | Capping type antiknock anti-loose pipe nut |
| CN102927112B (en) * | 2012-10-27 | 2014-06-18 | 魏伯卿 | Capping type antiknock anti-loose pipe nut |
| CN104653582A (en) * | 2013-11-18 | 2015-05-27 | 张响红 | Screw with right-hand and left-hand threads |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term |
Granted publication date: 20110622 |
|
| CX01 | Expiry of patent term |