CN201991728U - Counterweight balance structure for crankshaft of refrigeration type compressor - Google Patents
Counterweight balance structure for crankshaft of refrigeration type compressor Download PDFInfo
- Publication number
- CN201991728U CN201991728U CN2011200321112U CN201120032111U CN201991728U CN 201991728 U CN201991728 U CN 201991728U CN 2011200321112 U CN2011200321112 U CN 2011200321112U CN 201120032111 U CN201120032111 U CN 201120032111U CN 201991728 U CN201991728 U CN 201991728U
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- crankshaft
- compressor
- bolt
- balance
- balance portion
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Abstract
The utility model provides a counterweight balance structure for a crankshaft of a refrigeration type compressor, which belongs to the technical field of compressors and resolves the problem that dynamic balance of the crankshaft is poor when rotating speed of the motor of the existing refrigeration type compressor changes, and the compressor is led to vibrate continuously and service life of the compressor is effected. The crankshaft comprises a semi-circular balance portion, one end of the balance portion is eccentrically provided with an eccentric shaft and the other end of the balance portion is coaxially provided with a straight shaft. A counterweight block is connected onto the other side of the semi-circular balance portion through a bolt and is sleeved on the bolt, and a spring is arranged between the counterweight block and the bolt. Trimming moment produced by the counterweight balance structure is increased accordingly, and the balancing action of the crankshaft during rotation reaches a better state or a best state. In addition, the counterweight balance structure can reduce vibration of the compressor and prolong service life of the compressor.
Description
Technical field
The utility model belongs to the Compressor Technology field, relates to a kind of counterweigh structure of refrigeration type compressor crank shaft.
Background technique
Traditional refrigeration type compressor generally all is made of motor and two major components of piston, the rotor of motor links to each other with a bent axle, bent axle comprises eccentric shaft and d-axis, wherein d-axis links to each other with rotor, eccentric shaft links to each other with piston by connecting rod, rotate by the driven by motor bent axle, and drive piston motion; Therefore bent axle is the main rotatable parts of compressor, and the performance of bent axle and structural relation are to the service behaviour of compressor.When realizing that bent axle rotates, its eccentric shaft does not shake and need carry out rational counterweight to eccentric shaft, make its center of gravity symmetry with respect to the d-axis both sides, at above-mentioned problem, at present common generally all uses annulus or semicircular ring as balancing weight, as the patent No. be: the bent axle of 01823059.8 disclosed a kind of double-volume compressor, this bent axle comprises live axle, counterweight and crankpin, this live axle inserts in the reversible motor, is used for rotating with this motor along the direction identical with motor; This counterweight is arranged on the top of live axle, is used for preventing vibration at rotary course; This crankpin is arranged on the end face of counterweight, and departs from the center of live axle.The weight of above-mentioned counter weight is definite value, this counter weight is made into one with bent axle during fabrication, can not its balanced action of synchronous change with the variation of motor speed, and the rotating speed of bent axle changes with the variation of motor, bent axle dynamical balance feature when this has just caused motor speed to change is not good, make compressor always exist vibration, influence the working life of compressor.
Summary of the invention
The purpose of this utility model is at existing deficiency, and the counterweigh structure of the refrigeration type compressor crank shaft that a kind of counterweight that makes bent axle can change with the rotation speed change of bent axle is provided.
The purpose of this utility model can realize by following technical proposal: a kind of counterweigh structure of refrigeration type compressor crank shaft, described bent axle comprises the semiorbicular balance portion that is, end off-centre in balance portion is provided with eccentric shaft, the other end is same to be axially arranged with d-axis, on the semiorbicular opposite side of balance portion, be connected with balancing weight by bolt, it is characterized in that described balancing weight is socketed on the bolt, be provided with spring between this balancing weight and the bolt.
The counterweigh structure of this refrigeration type compressor crank shaft is arranged in the balance portion of bent axle, makes eccentric shaft, d-axis and the balance portion of bent axle reach balance by increase balancing weight in balance portion; When speed of crankshaft increased, the balancing weight on the bent axle was done radially outward and is moved holddown spring, and the corresponding increase of the trimming moment of its generation makes bent axle balanced action when rotating can reach preferable or the optimum state.
In the counterweigh structure of above-mentioned refrigeration type compressor crank shaft, above-mentioned spring is installed in the moving direction outside of balancing weight.When speed of crankshaft increased, the balancing weight on the bent axle was done radially outward and is moved holddown spring, and the corresponding increase of the trimming moment of its generation makes bent axle balanced action when rotating can reach preferable or the optimum state.
In the counterweigh structure of above-mentioned refrigeration type compressor crank shaft, be provided with pad in the moving direction inboard of balancing weight.The purpose of She Zhiing is to make balancing weight when radially moving inward like this, has buffer function when being resisted against in the balance portion.
Compared with prior art, the balancing weight of the counterweigh structure of this refrigeration type compressor crank shaft is socketed on the bolt, be provided with spring between this balancing weight and the bolt, when speed of crankshaft increases, balancing weight on the bent axle is done radially outward and is moved holddown spring, the corresponding increase of the trimming moment of its generation makes bent axle balanced action when rotating can reach preferable or the optimum state; Above-mentioned counterweight structure can reduce the vibration of compressor, extends its working life.
Description of drawings
Fig. 1 is the cross-sectional view of the counterweigh structure of this refrigeration type compressor crank shaft.
Fig. 2 is the plan structure schematic representation of the counterweigh structure of this refrigeration type compressor crank shaft.
Among the figure, 1, balance portion; 2, eccentric shaft; 3, d-axis; 4, bolt; 5, balancing weight; 6, spring; 7, pad.
Embodiment
Below be specific embodiment of the utility model and in conjunction with the accompanying drawings, the technical solution of the utility model is further described, but the utility model be not limited to these embodiments.
As Fig. 1, shown in Figure 2, the counterweigh structure of this refrigeration type compressor crank shaft is arranged in the balance portion 1 of bent axle, by in balance portion 1, increasing the eccentric shaft 2 that balancing weight 5 makes bent axle, d-axis 3 and balance portion 1 reach balance, this bent axle is mainly by balance portion 1, eccentric shaft 2 and d-axis 3 are formed, balance portion 1 is semi-circular, end off-centre in balance portion 1 is provided with eccentric shaft 2, the other end is same to be axially arranged with d-axis 3, above-mentioned balancing weight 5 is arranged on balance portion 1 semiorbicular opposite side, this balancing weight 5 is connected in the balance portion 1 by bolt 4, bolt 4 is arranged on the radial direction of balance portion 1, this concrete linkage structure is: balancing weight 5 is socketed on the bolt 4, bolt 4 is screwed onto in the balance portion 1, is provided with spring 6 between bolt 4 and balancing weight 5; When speed of crankshaft increased, the balancing weight 5 on the bent axle was done radially outward and is moved holddown spring 6, and the corresponding increase of the trimming moment of its generation makes bent axle balanced action when rotating can reach preferable or the optimum state.Have buffer function when making balancing weight 5 be resisted against in the balance portion 1, be provided with pad 7 in the moving direction inboard of balancing weight 5.
Specific embodiment described herein only is that the utility model spirit is illustrated.The utility model person of ordinary skill in the field can make various modifications or replenishes or adopt similar mode to substitute described specific embodiment, but can't depart from spirit of the present utility model or surmount the defined scope of appended claims.
Claims (3)
1. the counterweigh structure of a refrigeration type compressor crank shaft, described bent axle comprises the semiorbicular balance portion (1) that is, end off-centre in balance portion (1) is provided with eccentric shaft (2), the other end is same to be axially arranged with d-axis (3), on the semiorbicular opposite side of balance portion (1), be connected with balancing weight (5) by bolt (4), it is characterized in that described balancing weight (5) is socketed on the bolt (4), be provided with spring (6) between this balancing weight (5) and the bolt (4).
2. the counterweigh structure of refrigeration type compressor crank shaft according to claim 1 is characterized in that, in the moving direction outside of balancing weight (5) above-mentioned spring (6) is installed.
3. the counterweigh structure of refrigeration type compressor crank shaft according to claim 1 is characterized in that, is provided with pad (7) in the moving direction inboard of balancing weight (5).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011200321112U CN201991728U (en) | 2011-01-28 | 2011-01-28 | Counterweight balance structure for crankshaft of refrigeration type compressor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011200321112U CN201991728U (en) | 2011-01-28 | 2011-01-28 | Counterweight balance structure for crankshaft of refrigeration type compressor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201991728U true CN201991728U (en) | 2011-09-28 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011200321112U Expired - Fee Related CN201991728U (en) | 2011-01-28 | 2011-01-28 | Counterweight balance structure for crankshaft of refrigeration type compressor |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201991728U (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102788114A (en) * | 2012-07-27 | 2012-11-21 | 湖南奔腾动力科技有限公司 | Variable radius engine crankshaft balancing mechanism |
| CN105179207A (en) * | 2015-10-26 | 2015-12-23 | 珠海凌达压缩机有限公司 | Balance block assembly, compressor and air conditioner |
| CN106574612A (en) * | 2014-07-31 | 2017-04-19 | 日立汽车系统株式会社 | Reciprocating compressor |
| CN107917062A (en) * | 2017-12-12 | 2018-04-17 | 青岛万宝压缩机有限公司 | The adaptive balance weight assembly of refrigerator frequency-changeable compressor bent axle |
| CN109578244A (en) * | 2018-11-30 | 2019-04-05 | 南京奥福瑞压缩机有限公司 | A kind of preparation method of compressor crank shaft weighted and compressor crank shaft |
-
2011
- 2011-01-28 CN CN2011200321112U patent/CN201991728U/en not_active Expired - Fee Related
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102788114A (en) * | 2012-07-27 | 2012-11-21 | 湖南奔腾动力科技有限公司 | Variable radius engine crankshaft balancing mechanism |
| CN106574612A (en) * | 2014-07-31 | 2017-04-19 | 日立汽车系统株式会社 | Reciprocating compressor |
| CN106574612B (en) * | 2014-07-31 | 2018-11-09 | 日立汽车系统株式会社 | Reciprocating compressor |
| CN105179207A (en) * | 2015-10-26 | 2015-12-23 | 珠海凌达压缩机有限公司 | Balance block assembly, compressor and air conditioner |
| CN107917062A (en) * | 2017-12-12 | 2018-04-17 | 青岛万宝压缩机有限公司 | The adaptive balance weight assembly of refrigerator frequency-changeable compressor bent axle |
| CN109578244A (en) * | 2018-11-30 | 2019-04-05 | 南京奥福瑞压缩机有限公司 | A kind of preparation method of compressor crank shaft weighted and compressor crank shaft |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20110928 Termination date: 20120128 |