CN211573722U - Locking structure of crosshead and piston rod nut - Google Patents
Locking structure of crosshead and piston rod nut Download PDFInfo
- Publication number
- CN211573722U CN211573722U CN201922477172.9U CN201922477172U CN211573722U CN 211573722 U CN211573722 U CN 211573722U CN 201922477172 U CN201922477172 U CN 201922477172U CN 211573722 U CN211573722 U CN 211573722U
- Authority
- CN
- China
- Prior art keywords
- loosening
- steel wire
- crosshead
- piston rod
- gear
- 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.)
- Expired - Fee Related
Links
- 229910000831 Steel Inorganic materials 0.000 claims abstract description 30
- 239000010959 steel Substances 0.000 claims abstract description 30
- 210000004907 gland Anatomy 0.000 claims abstract description 26
- 230000000694 effects Effects 0.000 abstract description 13
- 238000010586 diagram Methods 0.000 description 4
- 230000002265 prevention Effects 0.000 description 4
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000007774 longterm Effects 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 229910001220 stainless steel Inorganic materials 0.000 description 1
- 239000010935 stainless steel Substances 0.000 description 1
Images
Abstract
The utility model belongs to the compressor field specifically discloses cross head and piston rod nut's locking structure, including cross head body, gland and the nut that is used for locking the piston rod, the gland passes through the gland bolt fastening on the cross head body, its characterized in that: the anti-loosening unit comprises a first bolt, a steel wire rope, an anti-loosening rack and an anti-loosening gear, the anti-loosening gear is coaxially fixed with the nut, the anti-loosening rack is provided with a threaded through hole and is meshed with the anti-loosening gear, and the first bolt is in threaded fit with the anti-loosening rack and is fixed on the crosshead body; the first bolts are provided with at least two steel wire holes, the nuts are provided with steel wire holes, and the steel wire ropes sequentially penetrate through the steel wire holes of the first bolts and the steel wire holes of the nuts to form a triangular structure. Due to the arrangement of the anti-loosening unit, the steel wire rope is matched with the anti-loosening rack, so that the anti-loosening effect is effectively enhanced.
Description
Technical Field
The utility model belongs to the compressor field specifically discloses cross head and piston rod nut's locking structure.
Background
The crosshead is a part connecting the piston and the connecting rod and has a guiding function. As shown in fig. 1 and 2, in the reciprocating mechanism, the piston rod and the crosshead are connected by screw threads under medium and small loads. However, the looseness prevention is realized only by the pretightening force of the threads, and the looseness is very easy to occur in the long-term operation process, so that the reliability of the equipment is reduced. Therefore, a new type of locking structure for the crosshead and the piston rod nut is urgently needed to reduce the loosening between the crosshead and the piston rod.
SUMMERY OF THE UTILITY MODEL
The utility model aims to provide a locking structure of cross head and piston rod nut to reduce the not hard up condition between cross head and the piston rod.
In order to achieve the purpose, the scheme provides a locking structure of a crosshead and a piston rod nut, which comprises a crosshead body, a gland and a nut for locking a piston rod, wherein the gland is fixed on the crosshead body through a gland bolt; the first bolts are provided with at least two steel wire holes, the nuts are provided with steel wire holes, and the steel wire ropes sequentially penetrate through the steel wire holes of the first bolts and the steel wire holes of the nuts to form a triangular structure.
The beneficial effect of this scheme does: due to the arrangement of the anti-loosening unit, the steel wire rope links different first bolts, so that good limitation can be formed mutually as long as the three first bolts are not loosened towards the same direction, and the anti-loosening effect can be effectively improved. In addition, the first bolt is matched with the anti-loosening rack, when the first bolt is loosened, acting force between the rack and the gear needs to be overcome, multiple anti-loosening limitation is further formed, and the anti-loosening effect is enhanced. Furthermore, due to the addition of the gear, if the gear is sent loose, the movement of the rack is also promoted, which results in the overall movement of the first bolt. And set up the steel wire hole on the nut, after forming triangular stable structure with first bolt, also can lock the gear simultaneously, the locking effect of further equipment of promotion.
Furthermore, the number of the steel wire holes of each first bolt is at least two, so that the anti-loosening effect is better.
Further, the gland bolts are provided with steel wire holes, the number of the gland bolts is 3, and the gland bolts are sequentially connected through steel wire ropes to form a triangular structure. The triangular anti-loosening structure is more stable, and the gland can also have a good anti-loosening effect.
Furthermore, the number of the steel wire holes of each gland bolt is at least two, and the steel wire ropes are arranged in a staggered mode. The locking effect is better.
Further, a gasket is arranged between the anti-loosening rack and the first gear. The setting of gasket, locking effect is better.
Further, the anti-loosening gear is a half gear. Compared with a full gear, the half gear is less in material consumption and lower in cost.
Drawings
Fig. 1 is a schematic diagram of a locking structure in the background art of the present invention.
Fig. 2 is a schematic diagram of a locking structure in the background art of the present invention.
Fig. 3 is a schematic diagram of an embodiment of the present invention.
Fig. 4 is a schematic diagram of an embodiment of the present invention.
Detailed Description
The following is further detailed by way of specific embodiments:
reference numerals in the drawings of the specification include: the crosshead body 10, the crosshead pin 11, the nut 20, the gland 30, the gland bolt 41, the wire rope 42, the first bolt 51, the check rack 52, and the check gear 53.
As shown in fig. 1 and 2, the conventional locking mechanism includes a crosshead body 10, a gland 30, and a nut 20 for locking a piston rod. The gland 30 is fixed on the crosshead body 10 by a gland bolt 41 and a crosshead pin 11, and is locked by a nut 20 on the left side and four gland bolts 41 on the gland 30, and is prevented from loosening only by the pretightening force of the threads.
After improvement, the scheme is shown in fig. 3 and 4, and a locking unit is additionally arranged on the basis. The loosening prevention unit includes a first bolt 51, a loosening prevention rack 52, and a loosening prevention gear 53. The locking gear 53 is coaxially fixed to the nut 20, the locking rack 52 is provided with a threaded through hole, the locking rack 52 is engaged with the locking gear 53, and the first bolt 51 is threadedly engaged with the locking rack 52 and fixed to the crosshead body 10. If necessary, it is also possible to weld the rack bar to the crosshead body 10.
The anti-loosening rack 52 and the anti-loosening gear 53 are made of stainless steel, so that the service life is longer. And in consideration of cost, the anti-loose gear 53 can be set as a half gear, so that one gear can match with two racks, and the cost is lower.
In addition, to further enhance the anti-loosening effect. Two wire holes are provided in the first bolts 51 and the gland bolts 41, and the first bolts 51 and the gland bolts 41 are connected by the wire rope 42. The steel cords 42 are mutually crossed, as shown in the figure, in an X-shape. The number of the first bolts 51 is two, and the number of the gland bolts 41 is four. Meanwhile, a gasket is arranged at each bolt joint, and a gasket is also arranged between the anti-loosening rack 52 and the first gear, so that the anti-loosening effect of the equipment is improved.
Compare with traditional locking structure, this scheme is because the setting of locking unit, and wire rope 42 gets up the linkage of different first bolt 51, like this, as long as it is not that two first bolt 51 surpass same orientation not hard up, all can form good restriction each other, can increase locking effect effectively. In addition, when the first bolt 51 is loosened by matching with the anti-loosening rack 52, the acting force between the rack and the gear needs to be overcome, so that multiple anti-loosening limits are further formed, and the anti-loosening effect is enhanced.
It should be noted that, in the present invention, unless otherwise explicitly specified or limited, the terms "mounted," "connected," "fixed," and the like are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present invention can be understood according to specific situations by those skilled in the art.
The above description is only an example of the present invention, and the common general knowledge of the known specific structures and characteristics of the embodiments is not described herein. It should be noted that, for those skilled in the art, without departing from the structure of the present invention, several modifications and improvements can be made, which should also be regarded as the protection scope of the present invention, and these will not affect the effect of the implementation of the present invention and the practicability of the patent. The scope of the claims of the present application shall be determined by the contents of the claims, and the description of the embodiments and the like in the specification shall be used to explain the contents of the claims.
Claims (6)
1. Crosshead and piston rod nut's locking structure, including crosshead body, gland and the nut that is used for locking the piston rod, the gland passes through the gland bolt fastening on crosshead body, its characterized in that: the anti-loosening unit comprises a first bolt, a steel wire rope, an anti-loosening rack and an anti-loosening gear, the anti-loosening gear is coaxially fixed with the nut, the anti-loosening rack is provided with a threaded through hole and is meshed with the anti-loosening gear, and the first bolt is in threaded fit with the anti-loosening rack and is fixed on the crosshead body; the first bolts are provided with at least two steel wire holes, the nuts are provided with steel wire holes, and the steel wire ropes sequentially penetrate through the steel wire holes of the first bolts and the steel wire holes of the nuts to form a triangular structure.
2. The locking structure of a crosshead and a piston rod nut according to claim 1, wherein: the number of the steel wire holes of each first bolt is at least two.
3. The locking structure of a crosshead and a piston rod nut according to claim 1, wherein: the gland bolts are provided with 3 steel wire holes, and are connected in sequence through steel wire ropes to form a triangular structure.
4. A crosshead and piston rod nut locking structure according to claim 3, wherein: the number of the steel wire holes of each gland bolt is at least two.
5. The locking structure of a crosshead and a piston rod nut according to claim 1, wherein: a gasket is arranged between the anti-loosening rack and the first gear.
6. The locking structure of a crosshead and a piston rod nut according to claim 1, wherein: the anti-loosening gear is a half gear.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201922477172.9U CN211573722U (en) | 2019-12-31 | 2019-12-31 | Locking structure of crosshead and piston rod nut |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201922477172.9U CN211573722U (en) | 2019-12-31 | 2019-12-31 | Locking structure of crosshead and piston rod nut |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN211573722U true CN211573722U (en) | 2020-09-25 |
Family
ID=72553451
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201922477172.9U Expired - Fee Related CN211573722U (en) | 2019-12-31 | 2019-12-31 | Locking structure of crosshead and piston rod nut |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN211573722U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111075691A (en) * | 2019-12-31 | 2020-04-28 | 重庆气体压缩机厂有限责任公司 | Crosshead and piston rod nut locking structure |
-
2019
- 2019-12-31 CN CN201922477172.9U patent/CN211573722U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111075691A (en) * | 2019-12-31 | 2020-04-28 | 重庆气体压缩机厂有限责任公司 | Crosshead and piston rod nut locking structure |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20200925 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |