CN103671027A - Oilless compressor with fork arm type rotating limiting mechanism - Google Patents
Oilless compressor with fork arm type rotating limiting mechanism Download PDFInfo
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- CN103671027A CN103671027A CN201310483486.4A CN201310483486A CN103671027A CN 103671027 A CN103671027 A CN 103671027A CN 201310483486 A CN201310483486 A CN 201310483486A CN 103671027 A CN103671027 A CN 103671027A
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- 230000007246 mechanism Effects 0.000 title claims abstract description 61
- 238000005452 bending Methods 0.000 abstract description 3
- 239000003921 oil Substances 0.000 description 5
- 230000000737 periodic effect Effects 0.000 description 5
- 230000035939 shock Effects 0.000 description 5
- 230000006378 damage Effects 0.000 description 3
- 239000000314 lubricant Substances 0.000 description 3
- 239000010687 lubricating oil Substances 0.000 description 3
- 238000004519 manufacturing process Methods 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 230000005540 biological transmission Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000004519 grease Substances 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 238000000034 method Methods 0.000 description 1
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Abstract
The invention belongs to the technical field of compressors and relates to an oilless compressor with a fork arm type rotating limiting mechanism. Rocker arms of the rotating limiting mechanism are of a double-arm structure with fork-shaped arrangement. Two fork arms of the rocker arms are arranged on the two sides of a driving shaft axis. Each fork arm is provided with a swinging disc pin and a swinging disc which are connected in a matched mode. When the swinging disc is under the action force transmitted through a connecting rod and generates a rotating trend around the driving shaft axis, the two fork arms of the rocker arms bear action force which is opposite in direction and is derived by the swinging disc respectively, the pair of action force is transmitted to a force bearing point of a shaft box pin in a torque-feedback mode, accordingly, cyclical impact on a shaft box from the shaft box pin along the axis of the shaft box pin can be relieved or even removed, in addition, overall action force (or moment) derived by the swinging disc is shared by the two fork arms, namely bending moment on the shaft box pin force bearing point, namely the root portion of each fork arm is greatly lowered, accordingly, the capacity for resisting fatigue rupture of the rotating limiting mechanism can be improved, and noise is lowered.
Description
Technical field
The invention belongs to Compressor Technology field, relate to oilless compressor, relate in particular to the swash plate class oilless compressor with limit rotation mechanism.
Background technique
Chinese patent application CN103291588A and CN103291581A have announced several energy and have realized the swash plate class compressor without oily output squeezing working medium, comprise clino-axis type compressor and oblique tray type compressor, the compressor that above-mentioned patent provides includes piston, connecting rod, live axle and balance; For clino-axis type compressor, also include an inclined shaft with live axle slanted arrangement, this inclined shaft and live axle be fastenedly connected or with the live axle making that is structure as a whole, described balance is sleeved on rotationally on inclined shaft and is subject to the driving of inclined shaft; For oblique tray type compressor, include a drive plate, this drive plate and live axle be fastenedly connected or with the live axle making that is structure as a whole, drive plate is provided with a driving plane with live axle slanted arrangement, described balance is driven by the driving plane of this drive plate directly or indirectly; In order to limit balance, there is significantly the rotation around drive axis in above-mentioned compressor, be provided with a limit rotation mechanism, described limit rotation mechanism includes a balance pin, a rocking arm and an axle box pin, one end and the rocking arm of described balance pin connects, the other end and the balance of balance pin connect, one end and the rocking arm of described axle box pin connects, the other end and the axle box of axle box pin connect, and rocking arm can rotate around axle box pin axis, balance can rotate around balance pin axis.The casing of above-mentioned compressor is Open architecture, in its chamber, do not place liquid lubricant oil, therefore avoided having the phenomenon in liquid lubricating oil splash inlet casing in hydraulic shrinking machine, on the piston of compressor, dispose the seal ring that self-enrichment material is made in addition, therefore the high-pressure working medium that can guarantee compressor output is not substantially containing lubricant oil.
Yet, the limit rotation mechanism that the clino-axis type compressor that above-mentioned patent application is announced or oblique tray type compressor and they adopt, still the place that has further improvement to improve, be mainly manifested in two aspects: 1) axle box pin produces and has larger periodic shock axle box, and result causes impact noise and fatigue ruption; 2) rocking arm bears larger periodically variable Moment in one end of its axle box pin, very easily causes rocking arm, at this place, fatigue ruption occurs.In fact, if adopt the limit rotation mechanism of single arm type, the hard point of its rocking arm and balance pin matching pair is owing to departing from and having a segment distance with axle box pin axis, when the gas pressure of compressor is delivered to balance by piston and connecting rod, notice that balance and drive axis are oblique layout, therefore balance will inevitably derive an active force rotating around drive axis to rocking arm at hard point place, notice that this active force is not obviously by the hard point of axle box pin and axle box, therefore can equivalence be moved to the hard point of axle box pin and derive additional bending moment by the known active force of mechanical knowledge simultaneously, be not difficult to find, periodically variable active force can produce along the periodic push-and-pull action of axle box pin axis direction axle box pin, its consequence is to cause the shock of axle box pin to axle box, thereby produce impact noise and fatigue ruption, periodically variable additional bending moment is born by a rocking arm completely in addition, result can cause rocking arm at the hard point place of axle box pin because load is compared with producing greatly fatigue ruption.
Summary of the invention
The invention provides a kind of oilless compressor with fork arm type equal limit rotation mechanism, object is to reduce on the one hand the mechanical impact noise that limit rotation mechanism produces, and improves on the other hand the ability that limit rotation mechanism resisting fatigue is destroyed.
To achieve these goals, the invention provides a kind of oilless compressor with fork arm type equal limit rotation mechanism, include piston, connecting rod, axle box, live axle and balance, on described live axle, be provided with inclined shaft or drive plate, described balance is driven by inclined shaft or drive plate, be provided with in addition and control balance around the limit rotation mechanism of drive axis rotation angle amplitude, this limit rotation mechanism includes balance pin, rocking arm and axle box pin, one end and the rocking arm of described balance pin connect, the other end and the balance of balance pin connect, one end and the rocking arm of described axle box pin connect, the other end and the axle box of axle box pin connect, rocking arm can rotate around axle box pin axis, balance can rotate around balance pin axis, it is characterized in that: the rocking arm of described limit rotation mechanism is the both arms structure of fork-shaped layout, two yokes of rocking arm split by the both sides of drive axis, on wherein each yoke, all dispose balance pin and balance connects.
The balance pin axis configuring on two yokes of above-mentioned rocking arm is layout is coaxially set.
Above-mentioned balance pin axis and axle box pin axis are the coplanar layout that arranges.
Above-mentioned balance pin axis and the axle box pin axis layout that is vertical setting.
Above-mentioned axle box pin axis and drive axis are to intersect vertically layout are set.
Above-mentioned balance pin axis, axle box pin axis, drive axis are intersected in a bit, and described joint overlaps with the fixed point of balance working plane; Or described balance pin axis, axle box pin axis, inclined shaft axis be intersected in a bit, described joint overlaps with the fixed point of balance working plane.
The making that is fastenedly connected or is structure as a whole of above-mentioned piston and connecting rod, described connecting rod and balance adopt ball-joint to be connected.
Above-mentioned axle box pin is ball stud structure, and coordinates with the poroid slideway arranging on axle box.
Above-mentioned axle box pin is ball stud structure, and coordinates with slide block ball-joint, and described slide block coordinates with the poroid slideway arranging on axle box.
Above-mentioned balance pin has at least the termination portion of to contact and be connected with balance employing bulb.
A kind of oilless compressor with fork arm type equal limit rotation mechanism of the present invention, owing to adopting two yoke limit rotation mechanisms and allowing two yokes of rocking arm split by the both sides of drive axis, when balance is subject to the active force that connecting rod transmission gets off and produces while rotating trend around drive axis, the active force of the opposite direction that the balance that two yokes of rocking arm afford respectively derives from (also deriving the reaction force that stops and limit balance rotation simultaneously), this feeds back to the form with moment of torsion to active force the hard point place of axle box pin, can alleviate thus even eliminate axle box pin along its axis the periodic shock to axle box, in other words reduce impact noise and reduced the chance of fatigue ruption, on the other hand, because the total force (or moment) that balance derives from is shared by two yokes, that is to be converted to each yoke root be that the moment of flexure at axle box pin hard point place is significantly reduced, therefore can improve the ability of limitting rotation mechanism resisting fatigue destruction.
Accompanying drawing explanation
Fig. 1 is that a kind of axle with fork arm type equal limit rotation mechanism oilless compressor of the present invention measures intention;
Fig. 2 is that compressor of the present invention is an embodiment's of fork arm type equal limit rotation mechanism of clino-axis type compressor structural scheme of mechanism;
Fig. 3 is that a kind of to have fork arm type equal limit rotation mechanism oilless compressor be that oblique tray type compressor embodiment's axle measures intention in the present invention;
Fig. 4 is an embodiment's of fork arm type equal limit rotation mechanism of the present invention exploded perspective view;
Fig. 5 is another embodiment's of fork arm type equal limit rotation mechanism of the present invention exploded perspective view;
Fig. 6 is another embodiment's of fork arm type equal limit rotation mechanism of the present invention exploded perspective view;
Fig. 7 is another embodiment's of fork arm type equal limit rotation mechanism of the present invention exploded perspective view.
Embodiment
With specific embodiment, the invention will be further described below, referring to Fig. 1-Fig. 7:
A kind of oilless compressor with fork arm type equal limit rotation mechanism, comprise piston 1, connecting rod 2, axle box 3, live axle 4 and balance 5, described live axle 4 is driven by motor and rotates around self drive axis O1, on live axle 4, be provided with inclined shaft 6a(as shown in Figure 2) or drive plate 6b(is as shown in Figure 3), described balance 5 is driven by inclined shaft 6a or drive plate 6b, be provided with in addition and control balance 5 around the limit rotation mechanism of drive axis O1 rotation angle amplitude, this limit rotation mechanism includes balance pin 7, rocking arm 8 and axle box pin 9, one end of described balance pin 7 and rocking arm 8 connect, the other end of balance pin 7 and balance 5 connect, one end of described axle box pin 9 and rocking arm 8 connect, the other end of axle box pin 9 and axle box 3 connect, rocking arm 8 can rotate around axle box pin axis O2, balance 5 can rotate around balance pin axis O3, wherein balance pin 7 can be rotatably assorted by disc-swing bearing 7a and balance 5, axle box pin 9 can be rotatably assorted (as shown in Figure 2) by axle box bearing 9a and axle box 3, characteristic of the present invention is: the both arms structures (as shown in Figure 2) that the rocking arm 8 of described limit rotation mechanism is fork-shaped layout, two yoke 8a of rocking arm 8 split by the both sides of drive axis O1, on wherein each yoke 8a, all disposing balance pin 7 connects with balance 5, obviously, the present invention is owing to adopting the limit rotation mechanism of two yoke 8a forms and allowing two yoke 8a split by the both sides of drive axis O1, when balance 5 is subject to the active force that connecting rod 2 transmits and produces while rotating trend around drive axis O1, two yoke 8a of rocking arm 8 respectively and the active force of the opposite direction that derives from of the balance 5 simultaneously affording (also derive and stop and reaction force that restriction balance 5 rotates around drive axis O1) simultaneously, this feeds back the form with moment of torsion or be delivered to the hard point position of axle box pin 9 and axle box 3 to active force, compare with limit rotation mechanism and compressor thereof that existing CN103291588A and CN103291581A propose, on the one hand because limit rotation mechanism has not had along the active force of axle box pin axis O2 at axle box pin 9 and the hard point position of axle box 3, can alleviate thus even eliminate axle box pin 9 along its axis the periodic shock to axle box 3, in other words reduce impact noise and reduced the chance of fatigue ruption, on the other hand, because the total force (or moment) that balance 5 derives from is shared by two yoke 8a, that is to be converted to each yoke 8a root be that the moment of flexure at axle box pin 9 hard point places is significantly reduced, therefore can improve the ability of limitting rotation mechanism resisting fatigue destruction.It should be noted that, when compressor adopts inclined shaft form layout (as shown in Figure 2), making that the inclined shaft 6a of compressor and live axle 4 are fastenedly connected or inclined shaft 6a and live axle 4 are structure as a whole, now inclined shaft axes O 4 is inclined with drive axis O1, optimised form is that inclined shaft axes O 4 is the crossing layout (as shown in Figure 2) of inclination with drive axis O1, and its balance 5 of the compressor of clino-axis type is sleeved on rotationally inclined shaft 6a and goes up and be subject to the driving of inclined shaft 6a and move; When compressor adopts swash plate form layout (as shown in Figure 3), making that the drive plate 6b of compressor and live axle 4 are fastenedly connected or drive plate 6b and live axle 4 are structure as a whole, now on drive plate 6b, be provided with one and be the drive surface of slanted arrangement with drive axis O1, described drive surface directly drives balance 5 or indirectly drives balance 5 by a thrust bearing 6c.No matter compressor of the present invention is adopt clino-axis type layout or adopt inclined disc type layout, all can define the working plane P(of balance 5 referring to Fig. 2), the entity that working plane P could pass through or pass balance 5 also can pass through or pass the imaginary space of balance 5, but working plane P follows all the time balance 5 and moves together and keep constant with respect to position and the attitude of balance 5, working plane P and drive axis O1 are non-perpendicular and nonparallel oblique layout, obviously, the plane that meets above-mentioned condition has infinitely a plurality of, therefore need to select an optimum plane as the working plane P of balance 5 in conjunction with concrete condition, in addition, the present invention is defined as the intersection point Q of working plane P and drive axis O1 the fixed point (referring to Fig. 2) of the working plane P of balance 5.It is pointed out that balance pin 7 in the present invention both can with balance 5 integral productions, also can make with rocking arm 8 integrative-structures, balance pin 7 is connecting with balance 5 and rocking arm 8 after can also making separately certainly; Balance pin 7 can be following situation with the situation that connects of balance 5 and rocking arm 8: balance pin 7 and balance 5 are fastenedly connected simultaneously that balance pin 7 and rocking arm 8 are movingly connected, balance pin 7 is fastenedly connected with rocking arm 8 with the moving balance pin 7 simultaneously that is connected of balance 5.
The present invention limits rotation mechanism and balance 5 more to cooperate in harmony in order to make, also in order to make, to manufacture, assemble and detect and can more simplify simultaneously, the balance pin axis O3 of the upper configuration of two yoke 8a of rocking arm 8 can be layout (as shown in Figure 2) is coaxially set, now two yoke 8a even can be designed to symmetric configuration.Similarly in order to make, limit rotation mechanism and balance 5 more to cooperate in harmony, the balance pin axis O3 in the present invention and axle box pin axis O2 are the coplanar layout that arranges.In addition, if balance pin axis O3 and axle box pin axis O2 are arranged to the work coordination that vertical layout also can be improved limit rotation mechanism and balance 5.Certainly, if axle box pin axis O2 and drive axis O1 are to intersect vertically, layout is set, limits the work coordination of rotation mechanism and balance 5 better; In addition, for oblique tray type compressor: if balance pin axis O3, axle box pin axis O2, drive axis O1 are arranged to be intersected in a bit, and this joint overlaps with the fixed point Q of the working plane P of balance 5, and limit rotation mechanism of the present invention will have preferably kinetic characteristic and dynamic property; For clino-axis type compressor: if balance pin axis O3, axle box pin axis O2, inclined shaft axes O 4 are arranged to be intersected in a bit, and this joint overlaps with the fixed point Q of the working plane P of balance 5, and limit rotation mechanism of the present invention will have preferably kinetic characteristic and dynamic property; When compressor is clino-axis type type of compressor, if inclined shaft axes O 4, balance pin axis O3, axle box pin axis O2, drive axis O1 are arranged to be intersected in a bit, and this joint overlaps (as shown in Figure 2) with the fixed point Q of the working plane P of balance 5, limits rotation mechanism to have best kinetic characteristic and dynamic property.
The present invention is in order to realize without oily output squeezing working medium, open axle box 3 structures will be adopted, now axle box 3 will not placed liquid lubricant oil, under this situation, if by the making that is fastenedly connected or is structure as a whole of piston 1 and connecting rod 2, piston 1 motion lubricated with there are not needs being connected of connecting rod 2 coordinates, the seal ring that self-enrichment material is made can be set in addition easily on piston 1, under this background, by adopt coordinating of connecting rod 2 and balance 5 ball-joint 10 be connected (as shown in Figure 3) can in their cooperation place, place lubricant oil or lubricant grease easily, so processing contributes to realize exporting without oil of compressor undoubtedly, it is pointed out that when adopting ball-joint to be connected coordinating of connecting rod 2 and balance 5, the centre of sphere of each ball-joint take that to be in the working plane P of balance 5 upper be the best.
A kind of oilless compressor with fork arm type equal limit rotation mechanism of the present invention, owing to adopting the limit rotation mechanism of two yoke 8a, and allow two yoke 8a of rocking arm 8 split by the both sides of drive axis O1, when balance 5 is subject to the active force that connecting rod 2 transmits and produces while rotating trend around drive axis O1, the active force (also deriving the reaction force that stops and limit balance 5 rotations simultaneously) of the opposite direction that the balance 5 that two yoke 8a of rocking arm 8 afford respectively derives from, this arrives the form feedback effect with moment of torsion to active force the hard point place of axle box pin 9, can alleviate thus even eliminate axle box pin 9 along its axis (being axle box pin axis O2) periodic shock to axle box 3, in other words reduce impact noise and reduced the chance of fatigue ruption, on the other hand, because the total force (or moment) that balance 5 derives from is shared by two yoke 8a, that is to be converted to each yoke 8a root place be that the moment of flexure at axle box pin 9 hard point places is significantly reduced, therefore can improve the ability of limitting rotation mechanism resisting fatigue destruction.
Above-described embodiment is only some preferred embodiments of the present invention, not limits the scope of the invention according to this, therefore: all various equivalences of doing according to structure of the present invention, shape, principle change, within all should being encompassed in protection scope of the present invention.
Claims (10)
1. one kind has the oilless compressor that fork arm type equal is limit rotation mechanism, comprise piston, connecting rod, axle box, live axle and balance, on described live axle, be provided with inclined shaft or drive plate, described balance is driven by inclined shaft or drive plate, be provided with in addition and control balance around the limit rotation mechanism of drive axis rotation angle amplitude, this limit rotation mechanism includes balance pin, rocking arm and axle box pin, one end and the rocking arm of described balance pin connect, the other end and the balance of balance pin connect, one end and the rocking arm of described axle box pin connect, the other end and the axle box of axle box pin connect, rocking arm can rotate around axle box pin axis, balance can rotate around balance pin axis, it is characterized in that: the rocking arm of described limit rotation mechanism is the both arms structure of fork-shaped layout, two yokes of rocking arm split by the both sides of drive axis, on wherein each yoke, all dispose balance pin and balance connects.
2. a kind of oilless compressor with fork arm type equal limit rotation mechanism according to claim 1, is characterized in that: the balance pin axis configuring on two yokes of described rocking arm is layout is coaxially set.
3. a kind of oilless compressor with fork arm type equal limit rotation mechanism according to claim 2, is characterized in that: described balance pin axis and axle box pin axis are the coplanar layout that arranges.
4. a kind of oilless compressor with fork arm type equal limit rotation mechanism according to claim 3, is characterized in that: described balance pin axis and the axle box pin axis layout that is vertical setting.
5. a kind of oilless compressor with fork arm type equal limit rotation mechanism according to claim 4, is characterized in that: described axle box pin axis and drive axis are to intersect vertically layout is set.
6. a kind of oilless compressor with fork arm type equal limit rotation mechanism according to claim 5, is characterized in that: described balance pin axis, axle box pin axis, drive axis are intersected in a bit, and described joint overlaps with the fixed point of balance working plane; Or described balance pin axis, axle box pin axis, inclined shaft axis be intersected in a bit, described joint overlaps with the fixed point of balance working plane.
7. according to any one described in claim 1 to 6, there is the oilless compressor of fork arm type equal limit rotation mechanism, it is characterized in that: the making that is fastenedly connected or is structure as a whole of described piston and connecting rod, described connecting rod and balance employing ball-joint are connected.
8. a kind of oilless compressor with fork arm type equal limit rotation mechanism according to claim 7, is characterized in that: described axle box pin is ball stud structure, and coordinates with the poroid slideway arranging on axle box.
9. a kind of oilless compressor with fork arm type equal limit rotation mechanism according to claim 7, is characterized in that: described axle box pin is ball stud structure, and coordinates with slide block ball-joint, and described slide block coordinates with the poroid slideway arranging on axle box.
10. a kind of oilless compressor with fork arm type equal limit rotation mechanism according to claim 7, is characterized in that: described balance pin has at least the termination portion of to contact and be connected with balance employing bulb.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310483486.4A CN103671027B (en) | 2013-10-15 | 2013-10-15 | A kind of oilless (oil free) compressor with fork arm type equal limit rotation mechanism |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310483486.4A CN103671027B (en) | 2013-10-15 | 2013-10-15 | A kind of oilless (oil free) compressor with fork arm type equal limit rotation mechanism |
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| Publication Number | Publication Date |
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| CN103671027A true CN103671027A (en) | 2014-03-26 |
| CN103671027B CN103671027B (en) | 2016-10-26 |
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| CN201310483486.4A Active CN103671027B (en) | 2013-10-15 | 2013-10-15 | A kind of oilless (oil free) compressor with fork arm type equal limit rotation mechanism |
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|---|---|---|---|---|
| JP2005273500A (en) * | 2004-03-23 | 2005-10-06 | Denso Corp | Ball joint of connecting rod |
| CN202602212U (en) * | 2012-05-31 | 2012-12-12 | 北京盈电电气有限公司 | Outer layer reinforced pre-twisted type strain clamp |
| CN202607795U (en) * | 2012-04-13 | 2012-12-19 | 佛山市恒力泰机械有限公司 | Novel machine frame structure for plate frame type brick molding machine |
| CN103291588A (en) * | 2013-06-15 | 2013-09-11 | 浙江鸿友压缩机制造有限公司 | Rocker arm type rotation limiting mechanism and compressor with same |
| CN103291581A (en) * | 2013-06-15 | 2013-09-11 | 浙江鸿友压缩机制造有限公司 | Oblique-shaft type oilless compressor |
| CN203594573U (en) * | 2013-10-15 | 2014-05-14 | 浙江鸿友压缩机制造有限公司 | Oil free compressor with fork-arm rotation limiting mechanism |
-
2013
- 2013-10-15 CN CN201310483486.4A patent/CN103671027B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2005273500A (en) * | 2004-03-23 | 2005-10-06 | Denso Corp | Ball joint of connecting rod |
| CN202607795U (en) * | 2012-04-13 | 2012-12-19 | 佛山市恒力泰机械有限公司 | Novel machine frame structure for plate frame type brick molding machine |
| CN202602212U (en) * | 2012-05-31 | 2012-12-12 | 北京盈电电气有限公司 | Outer layer reinforced pre-twisted type strain clamp |
| CN103291588A (en) * | 2013-06-15 | 2013-09-11 | 浙江鸿友压缩机制造有限公司 | Rocker arm type rotation limiting mechanism and compressor with same |
| CN103291581A (en) * | 2013-06-15 | 2013-09-11 | 浙江鸿友压缩机制造有限公司 | Oblique-shaft type oilless compressor |
| CN203594573U (en) * | 2013-10-15 | 2014-05-14 | 浙江鸿友压缩机制造有限公司 | Oil free compressor with fork-arm rotation limiting mechanism |
Non-Patent Citations (1)
| Title |
|---|
| 邓子龙等: "《机械设计基础》", 31 May 2013, 机械工业出版社 * |
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Denomination of invention: An oil-free compressor with a fork arm type limiting mechanism Effective date of registration: 20231229 Granted publication date: 20161026 Pledgee: Wenling branch of the Industrial Commercial Bank of China Ltd. Pledgor: ZHEJIANG HONGYOU AIR COMPRESSOR MANUFACTURING Co.,Ltd. Registration number: Y2023980074319 |
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