CN212479512U - Piston connecting rod assembly of refrigeration compressor - Google Patents
Piston connecting rod assembly of refrigeration compressor Download PDFInfo
- Publication number
- CN212479512U CN212479512U CN202021185992.7U CN202021185992U CN212479512U CN 212479512 U CN212479512 U CN 212479512U CN 202021185992 U CN202021185992 U CN 202021185992U CN 212479512 U CN212479512 U CN 212479512U
- Authority
- CN
- China
- Prior art keywords
- connecting rod
- crank
- piston
- head
- refrigeration compressor
- 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
- Compressor (AREA)
Abstract
The utility model provides a piston connecting rod assembly of a refrigeration compressor, which comprises a connecting rod, a crankshaft and a piston, wherein the crankshaft and the piston are respectively arranged at two ends of the connecting rod; the other end of the connecting rod is provided with a ball head, the joint of the piston and the connecting rod is provided with a spherical concave matched with the ball head, and the ball head is rotatably arranged in the spherical concave to enable the connecting rod to rotate universally. The utility model discloses a set up bearing and bulb, effectively prevent the connecting rod wearing and tearing, prolonged the life of connecting rod, improved the efficiency of compressor.
Description
Technical Field
The utility model relates to a compressor technical field especially relates to a refrigeration compressor piston link assembly.
Background
The piston compressor is a mechanical device that receives power from a motor and compresses a refrigerant to increase the pressure of the refrigerant. Such a compressor is commonly used in household appliances such as refrigerators, air conditioners, etc., and is also commonly used in industry; one end of a connecting rod rotates along with the crankshaft in a circumferential mode, the other end of the connecting rod and a piston do reciprocating linear motion together, in the prior art, one end, connected with the crankshaft, of the connecting rod is in rigid connection and is prone to abrasion, the service life of the connecting rod is directly influenced, the other end of the connecting rod is connected with the piston, parallelism of the two ends of the connecting rod is difficult to control, assembly accuracy is difficult to guarantee, and accordingly the compressor is large in input power, high in noise and low in service life.
SUMMERY OF THE UTILITY MODEL
Not enough to exist among the prior art, the utility model provides a compressor piston link assembly, its connecting rod that has solved to exist among the prior art easily wear and tear, life is low, the assembly precision is difficult to the problem of guaranteeing.
According to the embodiment of the utility model, a refrigeration compressor piston connecting rod assembly, it includes the connecting rod and sets up bent axle and piston at the connecting rod both ends respectively, the one end fixed mounting needle bearing of connecting rod, the eccentric crank that sets up on the bent axle, needle bearing cup joints on the crank and needle bearing and crank are interference fit so that connecting rod and crank rotate synchronously; the other end of the connecting rod is provided with a ball head, the joint of the piston and the connecting rod is provided with a spherical concave matched with the ball head, and the ball head is rotatably arranged in the spherical concave to enable the connecting rod to rotate universally.
Compared with the prior art, the utility model discloses following beneficial effect has:
1. the needle bearing is arranged at one end, connected with the crank, of the connecting rod, the needle bearing is fixedly connected with the connecting rod and is in interference fit with the crank, the needle bearing is high in bearing capacity and large in transmission power, and the bearing is in direct contact with the crank, so that the friction power is reduced, the abrasion is effectively prevented, and the service life of the connecting rod is prolonged;
2. the connecting end of the connecting rod and the piston is connected through the universal ball, so that the assembly is simple, the precision error is effectively eliminated, and the processing cost is reduced.
Drawings
Fig. 1 is a schematic view of a main structure of an embodiment of the present invention.
Fig. 2 is a schematic structural diagram of a compressor in the prior art.
Fig. 3 is a schematic view of a connecting rod structure according to another embodiment of the present invention.
In the above drawings: 1. a connecting rod; 10. a needle bearing; 11. a ball head; 12. a big end connecting rod part; 13. a small-end connecting rod part; 14. a gasket; 2. a crankshaft; 20. a crank; 3. a piston; 30. the spherical surface is concave.
Detailed Description
The technical solution of the present invention will be further explained with reference to the accompanying drawings and embodiments.
As shown in fig. 1 and 2, an embodiment of the present invention provides a piston connecting rod assembly of a refrigeration compressor, including a connecting rod 1, and a crankshaft 2 and a piston 3 respectively disposed at two ends of the connecting rod 1, wherein a needle bearing 10 is fixedly mounted at one end of the connecting rod 1, a crank 20 is eccentrically disposed on the crankshaft 2, the needle bearing 10 is sleeved on the crank 20, and the needle bearing 10 and the crank 20 are in interference fit so as to enable the connecting rod 1 and the crank 20 to synchronously rotate; the other end of the connecting rod 1 is provided with a ball 11, a spherical concave 30 matched with the ball 11 is arranged at the joint of the piston 3 and the connecting rod 1, and the ball 11 is rotatably arranged in the spherical concave 30 to enable the connecting rod 1 to rotate universally.
Specifically, the connecting rod 1 and the needle bearing 10 are welded and fixed; the other end of the connecting rod 1 is provided with a screw, an internal thread is arranged in the ball head 11, and the connecting rod 1 is in threaded connection with the ball head 11.
In the scheme, one end of the connecting rod 1, which is connected with the crankshaft 2, is fixedly welded with the needle bearing 10, the inner ring of the needle bearing 10 is sleeved on the crank 20, the needle bearing 10 is in interference fit with the crank 20, so that relative rotation cannot occur, the motor drives the crankshaft 2 to rotate and drives the crank 20 to rotate, the connecting rod 1 makes circular motion along with the crank 20, and the friction power is reduced and the energy efficiency is improved by arranging the needle bearing 10; one end that connecting rod 1 and piston 3 are connected sets up the screw rod, threaded connection bulb 11 on the screw rod, set up sphere concave yield 30 on piston 3, bulb 11 rotates to be established and makes connecting rod 1 be connected for universal ball with piston 3 in sphere concave yield 30, connecting rod 1 can be in piston 3 360 rotatory, not only the assembly is simple, but also effectively avoided the connecting rod 1 rupture because of the depth of parallelism deviation causes, the life of connecting rod 1 has been guaranteed, compressor work is steady and reliable.
In another embodiment, as shown in fig. 3, the connecting rod 1 is a split structure. The connecting rod 1 is composed of a big end connecting rod portion 12 connected with the crank 20 and a small end connecting rod portion 13 connected with the piston 3, an inner taper hole is formed in one end, not connected with the crank 20, of the big end connecting rod portion 12, an outer taper rod is arranged at one end, not connected with the piston 3, of the small end connecting rod portion 13, and the small end connecting rod portion 13 is inserted in the big end connecting rod portion 12. A washer 14 is also arranged between the big end connecting rod part 12 and the small end connecting rod part 13.
In the above scheme, connecting rod 1 is formed by the assembly of major part connecting rod portion 12 and little head connecting rod portion 13 detachable, for the assembly of major part connecting rod portion 12 and crank 20 and the assembly of little head connecting rod portion 13 and piston 3 facilitate, adopt the conical surface cooperation to make major part connecting rod portion 12 and little head connecting rod portion 13 be the tight fit, set up packing ring 14 between major part connecting rod portion 12 and little head connecting rod portion 13, can restrict the cooperation degree of depth of major part connecting rod portion 12 and little head connecting rod portion 13 through the thickness of adjustment packing ring 14, make the length of connecting rod 1 adjustable, effectively avoid scrapping because of the product that machining error caused.
Finally, although the present invention has been described in detail with reference to the preferred embodiments, it should be understood by those skilled in the art that the present invention can be modified or replaced by other means without departing from the spirit and scope of the present invention, which should be construed as limited only by the appended claims.
Claims (6)
1. The utility model provides a compressor piston link assembly, includes the connecting rod and sets up bent axle and the piston at the connecting rod both ends respectively, its characterized in that: one end of the connecting rod is fixedly provided with a needle bearing, a crank is eccentrically arranged on the crank, the needle bearing is sleeved on the crank, and the needle bearing and the crank are in interference fit so as to enable the connecting rod and the crank to synchronously rotate; the other end of the connecting rod is provided with a ball head, the joint of the piston and the connecting rod is provided with a spherical concave matched with the ball head, and the ball head is rotatably arranged in the spherical concave to enable the connecting rod to rotate universally.
2. A refrigeration compressor piston link assembly as claimed in claim 1, wherein: and the connecting rod is welded and fixed with the needle bearing.
3. A refrigeration compressor piston link assembly as claimed in claim 1, wherein: the other end of the connecting rod is provided with a screw, an internal thread is arranged in the ball head, and the connecting rod is in threaded connection with the ball head.
4. A refrigeration compressor piston link assembly as claimed in claim 1, wherein: the connecting rod is of a split structure.
5. The refrigeration compressor piston link assembly of claim 4, wherein: the connecting rod consists of a large-head connecting rod part connected with the crank and a small-head connecting rod part connected with the piston, wherein an inner taper hole is formed in one end, not connected with the crank, of the large-head connecting rod part, an outer taper rod is arranged at one end, not connected with the piston, of the small-head connecting rod part, and the small-head connecting rod part is inserted into the large-head connecting rod part.
6. A refrigeration compressor piston link assembly as claimed in claim 5, wherein: and a gasket is arranged between the big end connecting rod part and the small end connecting rod part.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021185992.7U CN212479512U (en) | 2020-06-22 | 2020-06-22 | Piston connecting rod assembly of refrigeration compressor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021185992.7U CN212479512U (en) | 2020-06-22 | 2020-06-22 | Piston connecting rod assembly of refrigeration compressor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN212479512U true CN212479512U (en) | 2021-02-05 |
Family
ID=74413692
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202021185992.7U Active CN212479512U (en) | 2020-06-22 | 2020-06-22 | Piston connecting rod assembly of refrigeration compressor |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN212479512U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115215178A (en) * | 2022-07-18 | 2022-10-21 | 张文英 | Elevator convenient to evacuate when earthquake |
-
2020
- 2020-06-22 CN CN202021185992.7U patent/CN212479512U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115215178A (en) * | 2022-07-18 | 2022-10-21 | 张文英 | Elevator convenient to evacuate when earthquake |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN103410732A (en) | Rotary-type translation piston compressor | |
| CN103644117B (en) | Rotary translation piston compressor | |
| CN212479512U (en) | Piston connecting rod assembly of refrigeration compressor | |
| JPWO2017033413A1 (en) | Hermetic compressor and refrigeration system | |
| CN201650663U (en) | Efficient oil-free piston compression device | |
| CN103016298B (en) | The inclined disc type reciprocating-piston oil-free air compressor that waves | |
| CN204436751U (en) | A kind of oil strain air condition compressor | |
| US6419049B1 (en) | Main shaft bearing lubricating apparatus for sealing-type reciprocating compressor | |
| JP2014080893A (en) | Hermetic reciprocating compressor and refrigerator using the same | |
| CN201354731Y (en) | Refrigeration compressor piston with spherical holding part | |
| CN108457837A (en) | A kind of connecting rod of reciprocating compressor and piston coupling structure and its assembly method | |
| CN204113586U (en) | A kind of single cylinder is without oily piston compression device | |
| CN208441990U (en) | A kind of connecting rod and piston coupling structure of reciprocating compressor | |
| CN202082068U (en) | Piston compressor | |
| CN216157845U (en) | Piston connecting rod of oil-free air compressor | |
| CN202001250U (en) | Compressor piston | |
| CN217481748U (en) | Double-oil-groove long-service-life compressor crankshaft | |
| KR101366562B1 (en) | A connecting rod for compressor and manufacturing method thereof | |
| CN213899238U (en) | Crankcase for air compressor | |
| CN204113568U (en) | Without oily piston two-stage compression device | |
| CN202971084U (en) | Inclined plate type sway reciprocating piston oil-less air compressor | |
| CN219061983U (en) | Plunger pump lubricating structure and plunger pump | |
| CN215257351U (en) | Crankshaft device of multistage gas compressor | |
| CN218882462U (en) | Linear guide device of reciprocating compressor | |
| CN210919779U (en) | Crankshaft applied to high-load fixed-frequency compressor |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |