CN203321780U - Rocker arm type rotation limiting mechanism and compressor with same - Google Patents

Abstract

The utility model belongs to the technical field of compressors and relates to a novel rocker arm type rotation limiting mechanism and a swash plate type compressor with the same. The rotation limiting mechanism comprises a wobble plate pin, a rocker arm and a shaft housing pin, wherein one end of the wobble plate pin is connected with the rocker arm in a matching way; the other end of the wobble plate pin is connected with a wobble plate in a matching way; one end of the shaft housing pin is connected with the rocker arm in a matching way; the other end of the shaft housing pin is connected with a shafting housing in a matching way; the rocker arm can rotate around the axis of the shaft housing pin; the wobble plate can rotate around the axis of the wobble plate pin. As matching pairs of the rotation limiting mechanism can be made into a rotation or hinge connecting structure, the traditional rotation limiting structures such as a gear pair in meshed matching and a pin/groove matching pair in sliding matching are abandoned, and the friction and the wear of a kinematic pair of the rotation limiting mechanism can be reduced. Therefore, the novel rocker arm type rotation limiting mechanism and the swash plate type compressor with the same have the advantages that convenience in use and maintenance of the compressor is effectively increased, the operational reliability of the compressor is effectively increased, and the manufacturing materials and the production cost of the compressor are effectively reduced.

Description

A kind of rocking arm type limit rotation mechanism reaches the compressor with this rocking arm type limit rotation mechanism

Technical field

The utility model belongs to the Compressor Technology field, relate to a kind of compressor of limitting rotation mechanism and comprising limited rotation mechanism, relate in particular to a kind of rocking arm type limit rotation mechanism and reach the compressor with this rocking arm type limit rotation mechanism, more specifically to a kind of mechanism that is exclusively used in the rotation of restriction swash plate class compressor balance and with the swash plate class compressor of this mechanism, by this limit rotation mechanism effectively the balance of limit compression machine with respect to the rotation angle amplitude of compressor axle box.

Background technique

Existing swash plate class compressor, comprise oblique tray type compressor and clino-axis type compressor etc., all utilize a balance of doing the circumference oscillating motion to derive the axial reciprocating displacement, also further by the connecting rod driven plunger, produce the to-and-fro motion with respect to cylinder with this drive link, thereby realize the periodically-varied of compressor operating chamber volume.Because an end of connecting rod connects balance and follows that balance moves together, the other end of connecting rod connects piston and orders about piston movement, if balance rotatablely moves with respect to axle box generation wide-angle amplitude, must cause connecting rod to pull piston to break away from the accident phenomenon of cylinder, so must limit circular-rotation or the swing that large corner occurs balance, Here it is, and existing swash plate class compressor is provided with the reason place that the limit rotation mechanism limits the balance rotation.

The limit rotation mechanism of current swash plate class compressor mainly contains gear type limit rotation mechanism, chute class limit rotation mechanism and cross axial pins limit rotation mechanism etc., though see that from working principle these mechanisms can reach the purpose that the restriction balance rotatablely moves, but they or the pin that has the gear pair of engagement type cooperation or exist sliding type to coordinate/groove matching pair, therefore limit the larger slide displacement of kinematic pair ubiquity of rotation mechanism, thereby produce larger friction and wear.Especially, above-mentioned limit rotation mechanism is open structure, in order to guarantee their functional reliability, must use lubricant oil to be lubricated it, in other words the axle box of traditional swash plate class compressor arrangement limit rotation mechanism must be airtight oil-containing case construction, the drawback of bringing thus is: 1) axle box of sealing has limited observation and operating space, and result has hindered the maintain and repair methods of compressor limit rotation mechanism; 2) axle box of sealing is unfavorable for the cooling of compressor core component, and result has reduced the functional reliability of compressor; 3) axle box of sealing must increase the making material, and result has increased the fabricating cost of compressor.

Summary of the invention

Reach the existing deficiency of swash plate class compressor with these limit rotation mechanisms for existing limit rotation mechanism, the utility model provides a kind of rocking arm type limit rotation mechanism, purpose is to realize reliably limiting the rotation angle amplitude of balance with respect to axle box, and effectively reduces the friction and wear of limit rotation mechanism; The utility model also provides the compressor with this rocking arm type limit rotation mechanism, and purpose is effectively to increase the convenience of compressor working service, effectively improves the functional reliability of compressor, effectively reduces making material and the cost of production of compressor.

To achieve these goals, the utility model provides a kind of rocking arm type limit rotation mechanism, described limit rotation mechanism is for limiting the rotation angle amplitude of balance with respect to axle box, include balance pin, rocking arm and 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 the axle box pin axis, balance can rotate around the balance pin axis.

Above-mentioned balance pin axis and axle box pin axis intersect.

The joint of above-mentioned balance pin axis, axle box pin axis overlaps with the fixed point of balance working plane.

Above-mentioned balance pin is or/and dispose rolling bearing on the axle box pin.

To achieve these goals, the utility model also provides a kind of compressor that contains rocking arm type limit rotation mechanism, it is characterized in that: described compressor includes piston, connecting rod, live axle and inclined shaft, described inclined shaft and the live axle structure that is fastened as a whole, balance is sleeved on rotationally on inclined shaft and is subject to the driving of inclined shaft.

The drive axis of above-mentioned compressor, inclined shaft axis, balance pin axis, axle box pin axis are intersected on a common point.

The fixed point that above-mentioned common point is the balance working plane, connecting rod employing ball-joint structure and the balance of compressor are hinged movingly.

The quantity of above-mentioned ball-joint structure has two at least, all the centre of sphere of ball-joint structure all drops on the working plane of balance, and the geometric center of gravity of the figure that line forms of all centre ofs sphere overlaps with the fixed point of balance working plane, simultaneously each centre of sphere is distributed in and take on the identical circumference of radius that fixed point is the center of circle.

The connecting rod of above-mentioned compressor and piston are fastenedly connected and are structure as a whole.

Be provided with oil sealing on the inclined shaft of above-mentioned compressor and balance or/and be provided with oil-impregnated bearing on inclined shaft and balance.

Be provided with cooling fan on the live axle of above-mentioned compressor or inclined shaft.

To achieve these goals, the utility model also provides another compressor with rocking arm type limit rotation mechanism, it is characterized in that: described compressor includes live axle and drive plate, described drive plate is provided with a drive surface with the live axle slanted arrangement, described drive surface directly drives balance or indirectly drives balance by a thrust bearing, balance by the ball-joint structure or/and sliding shoe structure drive link movingly.

A kind of rocking arm type limit of the utility model rotation mechanism reaches the compressor with the arm-type limit rotation mechanism of this Novel remote, due to the structural type that adopts balance pin, rocking arm and axle box pin, therefore the attachment portion movingly of this limit rotation mechanism all can be made and be rotationally connected or cut with scissors the structure be dynamically connected, the pin coordinated due to the gear pair of having abandoned engagement type cooperation, sliding type/tradition limit rotation structures such as groove matching pair, therefore can effectively reduce the friction and wear of limit rotation mechanism kinematic pair.In addition, the motion matching pair also adopted due to this rocking arm type limit rotation mechanism can be made easily from the oil-containing structure, therefore can make the case construction of open not oil-containing with its axle box of compressor of this rocking arm type limit rotation mechanism, thereby can obtain following advantage: the convenience that has effectively increased the compressor working service, effectively improve the functional reliability of compressor, effectively reduced making material and the cost of production of compressor.

The accompanying drawing explanation

Fig. 1 is an embodiment's of a kind of rocking arm type limit rotation mechanism of the utility model exploded perspective view;

Fig. 2 (a), Fig. 2 (b) are the schematic diagram of mechanisms under two kinds of different rocking arm working staties of a kind of rocking arm type limit rotation mechanism of the utility model;

Fig. 3 is that the utility model limits the axle of a kind of clino-axis type compressor of rotation mechanism to measure intention with rocking arm type;

Fig. 4 is the oblique cross-sectional schematic of the utility model with a kind of clino-axis type compressor of rocking arm type limit rotation mechanism;

Fig. 5 is that the utility model rocking arm type limit rotation mechanism includes a kind of bulb universal connection structure and with the structural representation of this limit rotation mechanism clino-axis type compressor;

Fig. 6 is that the utility model rocking arm type limit rotation mechanism includes another kind of bulb universal connection structure and with the structural representation of this limit rotation mechanism clino-axis type compressor;

Fig. 7 is a kind of oblique tray type compressor sectional view of the utility model with rocking arm type limit rotation mechanism.

Embodiment

Below with specific embodiment, the utility model is further described, referring to Fig. 1-7:

A kind of rocking arm type limit rotation mechanism, for limiting the amplitude of the balance 1 of swash plate class compressor with respect to the rotation angle of axle box 2, it comprises that balance pin 3, Rocker arm 4 and axle box pin 5(are referring to Fig. 1 and Fig. 3), one end and the Rocker arm 4 of described balance pin 3 connects, the other end of balance pin 3 and balance 1 connect, one end and the Rocker arm 4 of described axle box pin 5 connects, the other end of axle box pin 5 and axle box 2 connect, and Rocker arm 4 can rotate around axle box pin axis O1, balance 1 can rotate around balance pin axis O2, the working principle of the utility model rocking arm type limit rotation mechanism is: when balance 1 is compressed 6 driving of machine live axle, it will produce the rotation trend with respect to compressor axle box 2, so also will follow the trend of rotating with the balance pin 3 that balance 1 connects, because balance pin 3 and Rocker arm 4 connect, Rocker arm 4 is subject to again the constraint of axle box pin 5 and axle box 2 and can not rotates large angle around drive axis O3 simultaneously, therefore large corner rotation can not occur around drive axis O3 in balance 1, in other words under the constraint of the utility model rocking arm type limit rotation mechanism, balance 1 is restricted with respect to the amplitude of the rotation angle of axle box 2, the working plane P that notices the balance 1 of swash plate class compressor all is the oblique layout with respect to the drive axis O3 of live axle 6, in other words the motion of balance 1 is rendered as the circumference oscillating motion, oscillating motion process along with balance 1, balance pin 3 also will be followed the phugoid motion (now rotating around the reciprocating swing of balance pin axis O2 appears in balance 1) that produces the main axial direction along drive axis O3 thereupon, what echo mutually with it is that end that Rocker arm 4 and balance pin 3 connect also will be followed fluctuating adaptively, and showing as around axle box pin axis O1 reciprocating swing of Rocker arm 4 rotated, Fig. 2 has provided Rocker arm 4 and has been in respectively two kinds of schematic diagram of mechanisms under ultimate state, wherein Fig. 2 (a) shows is the position of Rocker arm 4 while with respect to axle box 2, being in upper pendulum, Fig. 2 (b) shows is the position of Rocker arm 4 while with respect to axle box 2, being in the bottom, obviously, Rocker arm 4 has determined the amplitude of balance 1 around the rotation angle of drive axis O3 around the wobble amplitude of axle box pin axis O1 and the brachium of Rocker arm 4 (match around the boundary line that is substantially equal to axle box pin 5 and Rocker arm 4 is the span with the Rocker arm 4 match around the boundary line to balance pin 3), the brachium of Rocker arm 4 is longer or/and Rocker arm 4 is less around the wobble amplitude of axle box pin axis O1, balance 1 around the rotation angle amplitude of drive axis O3 also just less, balance 1 is with respect to the rotation angle amplitude of axle box 2 less (measuring by the sense of rotation around drive axis O3) in other words, special needs to be pointed out is, in the utility model, said balance pin 3 connects with Rocker arm 4, and balance pin 3 connects with balance 1, can be connecting of following situation: 1) balance pin 3 be fastenedly connected with Rocker arm 4 or the making that is structure as a whole of balance pin 3 and Rocker arm 4, balance pin 3 is rotationally connected with balance 1 simultaneously, 2) balance pin 3 is fastenedly connected with balance 1 or the making that is structure as a whole of balance pin 3 and balance 1, balance pin 3 is rotationally connected with Rocker arm 4 simultaneously, 3) balance pin 3 is rotationally connected with Rocker arm 4, balance pin 3 also is rotationally connected with balance 1 simultaneously, 4) balance pin 3 is connected with the Rocker arm 4 bulb is universal, simultaneously balance pin 3 is fastenedly connected with balance 1 or the making that is structure as a whole of balance pin 3 and balance 1, 5) balance pin 3 is fastenedly connected with Rocker arm 4 or the making that is structure as a whole of balance pin 3 and Rocker arm 4, while balance pin 3 and universal connection of balance 1 bulb, it should be noted that, in the utility model, the universal connection of said bulb comprises bulb hinged, ball-joint connects, the various linkage structure modes such as ball hole matching pair connection, wherein bulb hinged is to refer to an end of balance pin 3 is made to ball head structure 3a, shown in Fig. 5, be this kind of situation, in Fig. 5, an end of balance pin 3 adopts ball head structure 3a to form the universal docked mode be connected of bulb with balance 1, now the other end of balance pin 3 both can be fastenedly connected with Rocker arm 4 (comprising the integrative-structure making), also can slide or/and be rotationally connected with Rocker arm 4, especially, balance pin 3 even can also develop into a simple ball head structure 3a, being balance pin 3 shown in Fig. 6 is fastenedly connected (being included as integrative-structure makes) and forms the universal docked mode be connected of bulb with balance 1 with the form of simple ball head structure 3a with Rocker arm 4, in Fig. 6, balance pin axis O2 is evolved into by any straight line of the balance pin 3 ball head structure 3a centre ofs sphere, and take itself and axle box pin axis O1 and drive axis O3 and be intersected in a common point as optimal placement trend simultaneously, ball-joint connects and comprises the structure that adopts the joint ball bearing, the matching pair connection of ball hole utilizes ball head structure and pore passage structure to form motion matching pair (not shown), the bulb of now take is joined circular hole as the secondary pairing of optimal movement, because the universal connection of bulb has comprised the situation of rotating and cutting with scissors, in other words belong to or be included in the said balance 1 of the utility model can be in the category that balance pin axis O2 rotates for the universal connection of various bulb recited above, in addition, in the utility model, said axle box pin 5 connects with Rocker arm 4 and axle box pin 5 connects with axle box 2, can be also connecting of following state: 1) axle box pin 5 with Rocker arm 4, be fastenedly connected or axle box pin 5 and Rocker arm 4 be structure as a whole makings, axle box pin 5 and axle box 2 are rotationally connected simultaneously, 2) axle box pin 5 with axle box 2, be fastenedly connected or axle box pin 5 and axle box 2 be structure as a whole makings, axle box pin 5 is rotationally connected with Rocker arm 4 simultaneously, 3) axle box pin 5 is rotationally connected with Rocker arm 4, axle box pin 5 and axle box 2 also are rotationally connected simultaneously, 4) axle box pin 5 and Rocker arm 4 bulb universally are connected, axle box pin 5 is fastenedly connected with axle box 2 or makings that be structure as a whole of axle box pin 5 and axle box 2 simultaneously, and 5) axle box pin 5 is fastenedly connected with Rocker arm 4 or axle box pin 5 is structure as a whole making, while axle box pin 5 and universal connection of axle box 2 bulbs with Rocker arm 4, it also should be noted that, the structure of balance 1 can be various forms, comprise disk-like structure, case shape structure, block structure and fork shaft shape structure etc., but which kind of structure no matter, all can define the working plane P of balance 1, the entity that working plane P could pass through or pass balance 1 also can pass through or pass the imaginary space of balance 1, but working plane P follows all the time balance 1 and moves together and keep constant with respect to position and the attitude of balance 1, working plane P and drive axis O3 are non-perpendicular and nonparallel oblique layout, obviously, the plane that meets above-mentioned condition has infinitely a plurality of, need to select the working plane P of an optimum plane as balance 1 in conjunction with concrete condition, such as can be according to the discharge capacity of compressor, cylinder number and force-bearing situation are determined position of intersecting point and the inclination angle of cut of working plane P and drive axis O3, Fig. 1 and Fig. 2 are set as the intersection point with drive axis O3 through inclined shaft axes O 4 to the working plane P in embodiment, it should be noted that in addition, the said balance 1 of the utility model is to refer in particular to balance 1 to occur to produce the amplitude with respect to the rotation angle of axle box 2 around drive axis O3 rotation with respect to the amplitude of the rotation angle of axle box 2.In sum, the utility model rocking arm type limit rotation mechanism can effectively limit the amplitude of balance 1 with respect to the rotation angle of axle box 2 really.

Balance pin axis O2 in the utility model rocking arm type limit rotation mechanism and axle box pin axis O1 both can intersect also can be non-intersect, but from the optimal location angle, balance pin axis O2 and axle box pin axis O1 intersect for better, now follow the progress of work of limit rotation mechanism, balance pin 3, the minimum of the axial movement value with respect to balance 1 that Rocker arm 4 occurs along balance pin axis O2 direction is play not even, Rocker arm 4 in addition, axle box pin 5 along axle box pin axis O1 direction with respect to also minimum play not even of the axial movement value of axle box 2, so will be favourable to the functional reliability that improves rocking arm type limit rotation mechanism, also have, if balance pin axis O2 and axle box pin axis O1 intersect vertically, the work performance meeting of the utility model rocking arm type limit rotation mechanism is better, further, if axle box pin axis O1 layout is become with drive axis O3 to intersect vertically, the performance characteristic of rocking arm type limit rotation mechanism of the present utility model will reach better state, especially, in the middle of the layout of the utility model rocking arm type limit rotation mechanism, if the joint of balance pin axis O2, axle box pin axis O1 is set as with the fixed point Q of balance 1 working plane P oscillating motion and overlaps (as depicted in figs. 1 and 2), the working effect of limitting rotation mechanism is by the best: balance pin 3 and Rocker arm 4 along the shifting amount minimum of balance pin axis O2 direction not even play, Rocker arm 4 and axle box pin 5 along also minimum play not even of the shifting amount of axle box pin axis O1 direction, certainly, it is to allow because foozle, assembly error, stress deformation error and hot-cold drift etc. are former thereby small position that cause does not overlap that the said point of the utility model overlaps, if as the actual conditions according to existing compressor, certain point and the error distance of fixed point Q be less than cylinder bore 3%, the utility model still can be regarded this point as and overlaps with fixed point Q, the said fixed point Q of the utility model, be working plane P and drive axis O3(or its elongation line that refers to balance 1) intersection point (referring to Fig. 1 and Fig. 2), the position of fixed point Q is irrelevant and present all the time fixed phenomenon and (allow because of compressor operating running vibration with the working procedure of limit rotation mechanism, small play or the shake of certain amplitude appears in the fixed point Q that works stress deformation and other a variety of causes and cause), if if such as fixed point Q play or when shake its distance that departs from the perfect condition position be less than 3% of cylinder bore, the utility model is still regarded as fixed point Q spatially to be in fixed state, also it should be noted that, in the utility model, said various axis intersects, be to allow it to have certain margin of error, comprise foozle, assembly error, all kinds of errors that stress deformation and temperature variation produce and the accumulation of these errors, as long as the distance of each relevant axis is less than in the number range of engineering permission, the utility model all is regarded as crossing category, an exemplary is: using the compresser cylinder diameter as the background size, if the wheelbase of certain two axial lines is less than or equal to 3% with the ratio of cylinder bore, the utility model can be regarded as crossing by these two axis.

The utility model is in order to reduce the friction and wear of each parts of rocking arm type limit rotation mechanism, can be at balance pin 3 or/and on axle box pin 5 the some rolling bearings of configuration the first rolling bearing 7a(referring to Fig. 1 and Fig. 3), by these first rolling bearings, 7a can be rotationally, smoothly, low frictionally and low wearing and tearing ground and balance 1, axle box 2 or Rocker arm 4 are realized connecting movingly, if now mix corresponding shaft seal and seal a certain amount of lubricant oil or grease up for safekeeping, can not need that axle box 2 is made to the case construction that stores lubricant oil provides lubricant oil to be lubricated the limit rotation mechanism, especially, the the first rolling bearing 7a configured can adopt oil-impregnated bearing, can more easily axle box 2 be made into like this to the not oil box of exempting from of splendid attire lubricant oil constructs, even axle box 2 can also be made to open case construction, it should be noted that, in the utility model, said oil-impregnated bearing had both comprised oil-impregnated bearing that the porous material such as traditional powder metallurgy makes, and had also comprised and carry capping and from the common rolling bearing that carries lubricant grease, thus, for rocking arm type of the present utility model limit rotation mechanism, not only be convenient to observe and safeguard but also can utilize extraneous atmosphere to carry out material cooling, other casing to it and also can significantly reduce.

The compressor that the utility model contains rocking arm type limit rotation mechanism, it can be the clino-axis type compressor, it includes piston 8, connecting rod 9, live axle 6 and inclined shaft 10, described inclined shaft 10 and live axle 6 structure that is fastened as a whole, balance 1 is sleeved on rotationally on inclined shaft 10 and is subject to the driving of inclined shaft 10, and Fig. 3 is the schematic diagram that includes the clino-axis type compressor of rocking arm type limit rotation mechanism; Here said inclined shaft 10 and live axle 6 structure that is fastened as a whole comprises: 1) inclined shaft 10 and live axle 6 makings that be structure as a whole, 2) be fastenedly connected and be structure as a whole by welding, drive fit, rivet or be threaded etc. mode and live axle 6 after the independent making of inclined shaft 10; Here said balance 1 is sleeved on rotationally on inclined shaft 10 and comprises: 1) balance 1 directly is sleeved on inclined shaft 10 rotationally, 2) balance 1 by several rolling bearings the second rolling bearing 7b indirectly be sleeved on rotationally (as shown in Figure 4) on inclined shaft 10; It is to be noted, inclined shaft 10 in the utility model adopts non-parallel layout with live axle 6, that is drive axis O3 and inclined shaft axes O 4 are nonparallel layout setting, also to adopt nonparallel layout setting with inclined shaft axes O 4 and take the vertical inclined shaft axes O 4 of working plane P of balance 1 be optimal layout to the working plane P of balance 1 in addition, especially, the intersection point that the working plane P of balance 1 and drive axis O3 intersect vertically in fact is a best fixed point Q of the utility model clino-axis type compressor balance 1; Obviously, when the live axle 6 of compressor rotates under the drive of motor or other prime mover, live axle 6 orders about balance 1 and moves and make the working plane P of balance 1 produce reciprocating swing displacement along drive axis O3 direction (notice balance 1 be subject to the restriction of balance pin 3, Rocker arm 4, axle box pin 5 and axle box 2 and can not produce excessive rotation corner), so balance 1 drive link 9, and and then by connecting rod 9 driven plunger 8, finally force piston 8 to produce certain shift reciprocately is arranged with respect to cylinder 11, thereby complete the periodically-varied of compressor operating chamber volume.

In the middle of the clino-axis type compressor that the utility model contains rocking arm type limit rotation mechanism, drive axis O3, inclined shaft axes O 4, balance pin axis O2, axle box pin axis O1 can be arranged to meet at altogether a bit, if if this public joint overlaps (as depicted in figs. 1 and 2) with the fixed point Q of balance 1 working plane P oscillating motion, balance pin 3 and Rocker arm 4 along the shifting amount minimum of balance pin axis O2 direction not even play, Rocker arm 4 and axle box pin 5 along also minimum play not even of the shifting amount of axle box pin axis O1 direction, in addition, the layout that axle box pin axis O1 and drive axis O3 are arranged to intersect vertically, can reduce and even eliminate the shifting amount of balance 1 along drive axis O3 direction fully, thereby guarantee that the fixed point Q of working plane P of balance 1, in the situation of play not all the time, is conducive to compressor operating steady, it is to be noted, the same as described earlier, in the utility model, said various axis intersects, be to allow it to have certain margin of error, comprise foozle, assembly error, all kinds of errors that stress deformation and temperature variation produce and the accumulation of these errors, as long as in the margin of error that the distance values of each relevant axis allows in engineering, the utility model all is regarded as crossing category, an example is: using the compresser cylinder diameter as the background size, if the wheelbase of certain two axial lines is less than or equal to 3% with the ratio of cylinder bore, the utility model can be regarded as crossing by these two axis, ditto described, here with the fixed point Q of balance 1 working plane P oscillating motion, to overlap be to allow because foozle, assembly error, stress deformation error and hot-cold drift etc. are former thereby cause their small position not overlap to the public joint of said drive axis O3, inclined shaft axes O 4, balance pin axis O2, axle box pin axis O1, if such as this public joint and fixed point Q apart from be less than cylinder bore 3%, visual its of the utility model overlaps with fixed point Q.

In the middle of the clino-axis type compressor that the utility model contains rocking arm type limit rotation mechanism, connecting rod 9 can be adopted to ball-joint structure 12 and balance 1 hinged (referring to Fig. 4) movingly; From the angle of reasonable stress, by the quantity of ball-joint structure 12 be arranged at least two more favourable; It is optimal layout that the centre of sphere S of whole ball-joint structures 12 of wherein take drops on the working plane P of balance 1, in this case, if two hinging structures 12, take they centre of sphere S line by fixed point Q as better, wherein to take again the distance of fixed point Q decile two centre of sphere S be best, if two above ball-joint structures 12, take polygonal center of gravity that their line of centre of sphere S forms and fixed point Q overlapping for better, wherein take again they centre of sphere S formation polygonal as regular polygon be the best; In other words, as long as the geometric center of gravity that the centre of sphere S of each hinging structure 12 all drops on working plane P above and their line forms overlaps with the fixed point Q of balance 1 working plane P and take fixed point Q as the center of circle each centre of sphere S is evenly distributed on the circumference of same radius, be the optimal layout of each hinging structure 12 of the utility model; It should be noted that, ball-joint structure 12 of the present utility model can adopt various ball Placements in prior art, comprise bulb hinged and ball bearing connection etc., wherein spherical structure can be both complete Orbicular structure, can be also ball-crown body structure, hemisphere structure or billiard table body structure, can also be ball joint bearing etc., but all there be the centre of sphere S of pivotal motion in the spherical structure of quovis modo.

In the middle of the clino-axis type compressor that the utility model contains rocking arm type limit rotation mechanism, connecting rod 9 and piston 8 can be fastenedly connected to be structure as a whole (referring to Fig. 4), can reduce like this assembling difficulty of compressor piston link assembly; It should be noted that, in the utility model, said connecting rod 9 is fastenedly connected to be structure as a whole with piston 8 and comprises: makings that be structure as a whole of connecting rod 9 and piston 8, or piston 8 and connecting rod 9 are fastenedly connected and are structure as a whole by modes such as screw thread, riveted joint, welding, interference fit again after for the making of split part; If now seal ring adopts self-enrichment material to make, as the filling teflon etc., the lubricant oil that can not rely in axle box 2 are lubricated it, and in other words axle box 2 can be made and exempt from oil box structure and open housing structure.

In the middle of the clino-axis type compressor that the utility model contains rocking arm type limit rotation mechanism, can on the inclined shaft 10 of compressor and balance 1, oil sealing 7c(be set as shown in Figure 4) or/and on inclined shaft 10 and balance 1, oil-impregnated bearing is set; The purpose that oil sealing 7c is set is to seal a certain amount of lubricant oil or grease locating movingly at inclined shaft 10 and balance 1 up for safekeeping; The meaning that oil-impregnated bearing is set is the one or more oil-bearing structures of making in the second rolling bearing 7b will be arranged on inclined shaft 10, the structural feature of utilizing oil-impregnated bearing to carry shaft seal is born the oil sealing effect in passing, simplify structural design and the Installation and Debugging of clino-axis type compressor with this, it should be noted that, in the utility model, said oil-impregnated bearing had both comprised oil-impregnated bearing that the porous material such as traditional powder metallurgy makes, and had also comprised and carry capping and from the common rolling bearing that carries lubricant grease; After above-mentioned setting of the utility model employing, for axle box 2 being made into to the case construction with open of exempting from oil, created condition, not only be convenient to observe and safeguard the limit rotation mechanism but also be beneficial to it is carried out to cooling, as also to reduce axle box 2 making material.

In the middle of the clino-axis type compressor that the utility model contains rocking arm type limit rotation mechanism, can on live axle 6 or inclined shaft 10, cooling fan 13 be set, the forced draft produced by cooling fan 13, can the swing limit rotation mechanism of effective cooling etc. the core component of compressor, thereby improve the functional reliability of compressor.

The utility model is with the compressor of rocking arm type limit rotation mechanism, it can be oblique tray type compressor, it comprises live axle 6 and drive plate 14, described drive plate 14 has a drive surface (not shown) with live axle 6 slanted arrangement, described drive surface directly drives the balance 1(not shown) or indirectly drive balance 1(as shown in Figure 7 by a thrust bearing 7d), balance 1 is by ball-joint structure 12(as shown in Figure 7) or/and sliding shoe structure (not shown) drive link 9 movingly, connecting rod 9 and then driven plunger 8 shift reciprocately that piston 8 is produced with respect to cylinder 11, thereby complete the periodically-varied of compressor operating chamber volume, it should be noted that, making that live axle 6 can be fastenedly connected with drive plate 14 or live axle 6 and drive plate 14 are structure as a whole, the mode that live axle 6 also can connect by key drives drive plate 14, and drive surface and sliding shoe structure can be used for reference structure of the prior art in addition.

In sum, a kind of rocking arm type limit of the utility model rotation mechanism reaches the compressor with this rocking arm type limit rotation mechanism, due to the structural type that adopts balance pin 3, Rocker arm 4 and axle box pin 5, therefore the structure be rotationally connected all can be made in the attachment portion movingly of this limit rotation mechanism, can abandon accordingly the gear pair of engagement type cooperation, the pin that sliding type coordinates/tradition limit rotation structures such as groove matching pair, therefore can effectively reduce the friction and wear of limit rotation mechanism kinematic pair.In addition, the pair that is rotatably assorted also adopted due to this rocking arm type limit rotation mechanism can be made easily from the oil-containing structure, therefore can make the case construction of open not oil-containing with its axle box 2 of compressor of this rocking arm type limit rotation mechanism, thereby can obtain following advantage: the convenience that has effectively increased the compressor working service, effectively improve the functional reliability of compressor, effectively reduced making material and the cost of production of compressor.

Above-described embodiment is only some preferred embodiments of the present utility model; not limit according to this protection domain of the present utility model; therefore: all various equivalences of doing according to structure of the present utility model, shape, principle change, within all should being encompassed in protection domain of the present utility model.

Claims (12)

1. a rocking arm type is limit rotation mechanism, it is characterized in that: described limit rotation mechanism is for limiting the rotation angle amplitude of balance with respect to axle box, include balance pin, rocking arm and 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 the axle box pin axis, balance can rotate around the balance pin axis.

2. a kind of rocking arm type according to claim 1 is limit rotation mechanism, it is characterized in that: described balance pin axis and axle box pin axis intersect.

3. a kind of rocking arm type according to claim 2 is limit rotation mechanism, and it is characterized in that: the joint of described balance pin axis, axle box pin axis overlaps with the fixed point of balance working plane.

4. rocking arm type according to claim 1 is limit rotation mechanism, and it is characterized in that: described balance pin is or/and dispose rolling bearing on the axle box pin.

5. one kind contains the compressor that the described rocking arm type of claim 1 to 4 any one is limit rotation mechanism, it is characterized in that: described compressor includes piston, connecting rod, live axle and inclined shaft, described inclined shaft and the live axle structure that is fastened as a whole, balance is sleeved on rotationally on inclined shaft and is subject to the driving of inclined shaft.

6. a kind of compressor according to claim 5, it is characterized in that: the drive axis of compressor, inclined shaft axis, balance pin axis, axle box pin axis are intersected on a common point.

7. a kind of compressor according to claim 6 is characterized in that: the fixed point that described common point is the balance working plane, described connecting rod adopt the ball-joint structure and balance hinged movingly.

8. a kind of compressor according to claim 7, it is characterized in that: the quantity of described ball-joint structure has two at least, all the centre of sphere of ball-joint structure all drops on the working plane of balance, and the geometric center of gravity of the figure that line forms of all centre ofs sphere overlaps with the fixed point of balance working plane, simultaneously each centre of sphere is distributed in and take on the identical circumference of radius that fixed point is the center of circle.

9. compressor according to claim 5, it is characterized in that: the connecting rod of compressor and piston are fastenedly connected and are structure as a whole.

10. compressor according to claim 9, is characterized in that: be provided with oil sealing on the inclined shaft of compressor and balance or/and be provided with oil-impregnated bearing on inclined shaft and balance.

11. compressor according to claim 10 is characterized in that: on the live axle of compressor or inclined shaft, be provided with cooling fan.

12. the compressor with the described rocking arm type limit of claim 1 to 4 any one rotation mechanism, it is characterized in that: described compressor includes live axle and drive plate, described drive plate is provided with a drive surface with the live axle slanted arrangement, described drive surface directly drives balance or indirectly drives balance by a thrust bearing, balance by the ball-joint structure or/and sliding shoe structure drive link movingly.

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