CN204900173U - Novel miniature inclined disc type plunger pump, motor - Google Patents
Novel miniature inclined disc type plunger pump, motor Download PDFInfo
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- CN204900173U CN204900173U CN201520598201.6U CN201520598201U CN204900173U CN 204900173 U CN204900173 U CN 204900173U CN 201520598201 U CN201520598201 U CN 201520598201U CN 204900173 U CN204900173 U CN 204900173U
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Abstract
The utility model provides a novel miniature inclined disc type plunger pump, the motor, install ripple spring (6B) between ball pivot (5B) and cylinder body (10B), left end spring action in ball pivot (the 5B) of ripple spring (6B), right -hand member spring action in cylinder body (the 10B) of ripple spring (6B), transmission shaft (1B) passes ball pivot (5B) and ripple spring (6B) drive cylinder body (10B) is rotatory, the circumference equipartition has a plurality of plunger holes on cylinder body (10B), the downthehole smooth boot assembly (9B) of plunger that installs of plunger, cylinder body (10B) terminal surface and the laminating of valve plate (11B) terminal surface. Cylinder body (10B), valve plate (11B) for " the valve plate and the complex cylinder body of an inclined disc type plunger pump " of this applicant application. The utility model discloses reduced product overall dimension and weight, improved product transmission efficiency, improved the vice life of friction such as piston shoes and sloping cam plate, be favorable to the promotion of high working speed of product, improved product quick start and braking response ability.
Description
Technical field
The utility model belongs to technical field of hydraulic pressure, relates to new micro plunger pump, motor that a kind of more compact structure, performance are more excellent particularly.
Background technique
Swash plate plunger pump, motor, need for cylinder body provides pre-pressing force, and cylinder body end face is close on thrust plate.A kind of typical structure of conventional products adopts cylindroid helicalcoil compression spring to provide pre-pressing force for cylinder body, and simultaneously for plunger provides reverberation matrix method.This structure is widely used in swash plate plunger pump, motor from very small displacement to very huge discharge.As Fig. 1, specifically comprise transmission shaft 1A, oil sealing 2A, housing 3A, bearing I 4A, swash plate 5A, ball pivot 6A, power transmission pin 7A, return plate 8A, plunger piston slippery boots assembly 9A, packing ring 10A, cylinder body 11A, cylindroid helicalcoil compression spring 12A, back-up ring 13A, thrust plate 14A, bearing I I15A, end cap 16A.Transmission shaft 1A drives cylinder body 11A to rotate through ball pivot 6A, in the space of cylinder body 11A endoporus and transmission shaft 1A cylindrical, is provided with cylindroid helicalcoil compression spring 12A.The left end elastic force of spring acts on ball pivot through power transmission pin, and ball pivot compresses return plate, for plunger piston slippery boots assembly 9A provides reverberation matrix method; Its right-hand member elastic force acts on cylinder body 11A by the back-up ring 13A be installed on cylinder body 11A, for the pre-pressing of cylinder body, makes cylinder body end face be adjacent to thrust plate end face.
Another kind of structure adopts belleville spring to provide pre-pressing force for cylinder body, and simultaneously for plunger provides reverberation matrix method.Because belleville spring rigidity is comparatively large, this structure is common in the swash plate plunger pump of the larger medium discharge capacity of required elastic force to huge discharge.Its topology layout can see Fig. 3, and difference is that ripple spring 3C has changed belleville spring 4C into.Belleville spring is contained between ball pivot 1C and cylinder body 2C, and left end acts on ball pivot, for compressing return plate; Right-hand member acts on cylinder body, for the pre-pressing of cylinder body.
Note: though adopt the scheme of belleville spring similar in layout to embodiment of the present utility model, under same specification, the structural parameter of the correlated parts that two kinds of structures are corresponding are widely different.In fact according to the micropump of the utility model design, motor configuration closely, required elastic force is less, can not replace ripple spring 3C with belleville spring 4C.As shown in Fig. 2 a, 2b, during employing ripple spring, ball pivot designs less (multiple part also respective design obtains less), cannot install applicable belleville spring.Be described in concrete reason prior art defect below.
The defect of prior art:
When 1, adopting cylindroid helicalcoil compression spring, need in cylinder body, design enough large hole, reserve installing space to spring.For ensureing that cylinder body has the wall thickness of sufficient intensity, plunger hole pitch circle diameter needs to design enough large.
For plunger pump, the motor of normal usage, medium discharge capacity to huge discharge, spring take up space proportion for whole product is less, can ignore its impact, generally can not form puzzlement.But for micropump, the motor of some specific uses (as Aeronautics and Astronautics, small scale robot etc.), by the product of this design, because rotary component physical dimension is comparatively large, there is many-sided performance deficiency, mainly comprise: Total Product boundary dimension and weight bigger than normal, power-weight ratio is on the low side; The relative sliding linear velocity of sliding friction pair is higher and friction power loss is increased, therefore working efficiency is on the low side; Friction pair relative sliding linear velocity is higher makes the contact PV value of friction pair comparatively large, reduces friction pair working life, and limits the most high workload rotating speed of product simultaneously; The increase of product rotary component moment of inertia makes product start the reduction of braking response speed.
When 2, adopting belleville spring, because belleville spring rigidity is large, and there is very large scattered error, therefore generally need to combinationally use with multi-disc belleville spring, reduce integral rigidity by back-to-back, face-to-face installation, reduce elastic force error.In hydraulic planger pump, motor, common 4 belleville springs combination, is shown in shown in Fig. 2 b.
Nonetheless, because disc spring rigidity is very large, the accumulative actual elastic force impact on belleville spring of part's machining errors is still very large, therefore the axial installing space of surveying belleville spring is generally needed when assembling, by increasing and decreasing pad quantity at the end face of belleville spring or changing the actual compression amount that spacer thickness adjusts belleville spring, ensure the elastic force that design needs.
When belleville spring is applied to conventional pumps, the motor of required elastic force larger medium above discharge capacity, generally puzzlement can not be formed in design.But when belleville spring is applied to elastic force requirement less micropump, will following problems may be encountered:
First, when other Element Designs closely time, in fact there is no the installing space of multi-disc belleville spring.If specially for belleville spring reserves installing space, then need the physical dimension increasing multiple part, and increasing amount is for the very little micropump of this body structure, and proportion is larger.Consequent defect is identical with aforementioned 1st kind of structure (employing cylindroid helicalcoil compression spring).
Concrete condition illustrates: Fig. 2 a-b is the partial structurtes schematic diagram adopting ripple spring and adopt belleville spring under equal elastic force demand, and Fig. 2 a is the structure adopting ripple spring, and Fig. 2 b is the structure adopting belleville spring.Compared to ripple spring, the radial dimension of belleville spring and axial working depth are all larger, and when therefore adopting belleville spring, the diameter of ball pivot endoporus and the degree of depth all will strengthen.For ensureing the minimum wall thickness (MINI W.) t that ball pivot normally works required, then the spherical diameter of ball pivot also needs corresponding increasing.Cause chain reaction thus, return plate distribution circle strengthens, cylinder body distribution circle strengthens, swash plate strengthens, housing strengthens.
Secondly, elastic force needed for micropump is less, because its rigidity is relatively large during employing belleville spring, decrement corresponding under design elastic force is too small, part's machining errors, measurement error and parts depreciation amount are exaggerated the impact of elastic force, the pretightening force not only wanting stable guarantee design during assembling is the devil, even if fit on can realize, in use because belleville spring itself weares and teares and the wearing and tearing of ball pivot return plate, disk-shaped spring elasticity will be caused sharply to decline, product reliability is poor, and the life-span is short.
Summary of the invention
The purpose of this utility model provides a kind of new micro swash plate plunger pump, motor, Small Plunger Pump, the motor for some specific use (as Aeronautics and Astronautics, small scale robot etc.), reduce to greatest extent its boundary dimension and weight, raising product transmission efficiency, improve the sliding friction pair such as piston shoes and swash plate working life, improve product and start fast and braking response performance.
The purpose of this utility model and solve its technical problem underlying and realize by the following technical solutions: a kind of new micro swash plate plunger pump, motor, comprise transmission shaft, cylinder body, plunger piston slippery boots assembly, housing, end cap, bearing I, bearing II, oil sealing, swash plate and return plate, it is characterized in that: ripple spring is installed between ball pivot and cylinder body, the left end elastic force of ripple spring acts on ball pivot, the right-hand member elastic force of ripple spring acts on cylinder body, transmission shaft is through ball pivot and ripple spring, driving cylinder body rotates, cylinder body is evenly distributed in multiple plunger hole, in plunger hole, plunger piston slippery boots assembly is installed, cylinder body end face and thrust plate end face are fitted.
The new micro swash plate plunger pump of described one, motor, is characterized in that: ball pivot endoporus and cylinder body afterbody cylindrical are Spielpassung.
The new micro swash plate plunger pump of described one, motor, is characterized in that: can not use ball pivot, and ripple spring left end elastic force acts on transmission shaft, and right-hand member elastic force acts on cylinder body, is that return plate arranges mechanical position limitation with spacing briquetting or spacing back-up ring.
The new micro swash plate plunger pump of described one, motor, is characterized in that: described cylinder body (10B), thrust plate (11B) use " a kind of thrust plate of swash plate plunger pump and the cylinder body of cooperation thereof " of the applicant's separate case application simultaneously.
The utility model compared with prior art has obvious advantage and beneficial effect.The Element Designs such as cylinder body, return plate, thrust plate, swash plate, housing obtain closely by the utility model, are only required to be spring and reserve very little installing space.Under equivalent specifications, product design size is less, and weight is lighter.In contrast to the product of the close specification adopting background technique design, its power-weight ratio has clear ahead advantage.
In addition, due to the reduction of cylinder body plunger hole pitch circle diameter, improve the combination property of product simultaneously, below enumerate several typical, obvious beneficial effect:
Under equal rotating speed, the slip line speed of piston shoes on swash plate reduces, and the ineffective power consumption that sliding friction produces reduces, and therefore product transmission efficiency is higher; Piston shoes reduce with the PV value that contacts of thrust plate with swash plate, cylinder body, improve the working life of friction pair, and are conducive to the lifting of product limit speed; The moment of inertia of rotary component reduces, and under the applying working conditions such as employing driven by servomotor plunger pump, product accelerates and slows down faster, and response performance is better, impacts less when braking.
Accompanying drawing explanation
Fig. 1 is the hydraulic planger pump of prior art, the structural representation of motor,
Fig. 2 a is the partial structurtes schematic diagram adopting ripple spring,
Fig. 2 b is the partial structurtes schematic diagram adopting belleville spring,
Fig. 3 is structural representation of the present utility model,
Fig. 4 is another embodiment's schematic diagram of the present utility model.
Mark in figure:
1A, transmission shaft, 2A, oil sealing, 3A, housing, 4A, bearing I, 5A, swash plate, 6A, ball pivot, 7A, power transmission pin, 8A, return plate, 9A, plunger piston slippery boots assembly, 10A, spring washer, 11A, cylinder body, 12A, cylindroid helicalcoil compression spring, 13A, back-up ring, 14A, thrust plate, 15A, bearing II, 16A, end cap.
1B, transmission shaft, 2B, oil sealing, 3B, housing, 4B, bearing I, 5B, ball pivot, 6B, ripple spring, 7B, swash plate, 8B, return plate, 9B, plunger piston slippery boots assembly, 10B, cylinder body, 11B, thrust plate, 12B, end cap, 13B, bearing II, 14B, spacing briquetting.
1C, ball pivot, 2C, cylinder body, 3C, ripple spring, 4C, belleville spring.
Embodiment
Below in conjunction with accompanying drawing and preferred embodiment, to according to the miniature swash plate plunger pump of one, motor embodiment, feature and the effect thereof that the utility model proposes, be described in detail as follows.
See Fig. 3, a kind of new micro swash plate plunger pump, motor, comprise transmission shaft 1B, cylinder body 10B, plunger piston slippery boots assembly 9B, housing 3B, end cap 12B, bearing I 4B, bearing II 13B, oil sealing 2B, swash plate 7B and return plate 8B, ripple spring 6B is installed between ball pivot 5B and cylinder body 10B, the left end elastic force of ripple spring 6B acts on ball pivot 5B, and ball pivot 5B compresses return plate 8B; The right-hand member of ripple spring 6B acts on cylinder body 10B, for cylinder body 10B provides pre-pressing force.Transmission shaft 1B is through ball pivot 5B and ripple spring 6B, and drive cylinder body 10B to rotate, cylinder body 10B is evenly distributed in multiple plunger hole, is provided with plunger piston slippery boots assembly 9B in plunger hole, cylinder body 10B end face and thrust plate 11B end face are fitted.
The new micro swash plate plunger pump of above-mentioned one, motor, preferably, the endoporus D of ball pivot 5B becomes Spielpassung with the cylindrical D-shaped of cylinder body 10B tail end, improves the rotary stability of ball pivot, reduces the beat amplitude of ripple spring, improves spring fatigue life.
The new micro swash plate plunger pump of above-mentioned one, motor, wherein: transmission shaft 1B is supported by bearing I 4B and bearing II 13B.Transmission shaft overhanging end can stretch out from the outside of bearing I 4B, also can stretch out from the outside of bearing I I13B.Be provided with oil sealing 2B at the overhanging end of transmission shaft 1B, oil sealing 2B selects the structural type be suitable for according to concrete user demand, can be outside framework oil seal, mechanical seal or other forms of oil sealing.
The new micro swash plate plunger pump of above-mentioned one, motor, wherein: for installing and support housing and the end cap of heart component, its structural design, not by restriction shown in the drawings, can adjust its structure according to real needs such as processing and assembly process processes.
The new micro swash plate plunger pump of above-mentioned one, motor, under the operating mode that usage requirement is lower, optionally, can not use ball pivot.As shown in Figure 4, ripple spring left end elastic force acts on transmission shaft and (can act on the step surface that transmission shaft is arranged, also can act on the back-up ring that transmission shaft is installed), and ripple spring right-hand member elastic force acts on the pre-pressing for cylinder body on cylinder body.After cancelling ball pivot, be that return plate arranges mechanical stop limiter with spacing briquetting 14B or spacing back-up ring, plunger relies on limit stoper to realize in the backhaul (left direction) in oil suction district.
The new micro swash plate plunger pump of above-mentioned one, motor, as preferably, described cylinder body 10B and thrust plate 11B uses " a kind of thrust plate of swash plate plunger pump and the cylinder body of cooperation thereof " of the applicant's separate case application simultaneously.
The above, it is only preferred embodiment of the present utility model, not any pro forma restriction is done to the utility model, anyly do not depart from technical solutions of the utility model content, the any simple modification done above embodiment according to technical spirit of the present utility model, equivalent variations and modification, all still belong in the scope of technical solutions of the utility model.
Claims (3)
1. a new micro swash plate plunger pump, motor, comprise transmission shaft (1B), cylinder body (10B), plunger piston slippery boots assembly (9B), housing (3B), end cap (12B), bearing I (4B), bearing II (13B), oil sealing (2B), swash plate (7B) and return plate (8B), it is characterized in that: ripple spring (6B) is installed between ball pivot (5B) and cylinder body (10B), the left end elastic force of ripple spring (6B) acts on ball pivot (5B), the right-hand member elastic force of ripple spring (6B) acts on cylinder body (10B), transmission shaft (1B) is through ball pivot (5B) and ripple spring (6B), cylinder body (10B) is evenly distributed in multiple plunger hole, plunger piston slippery boots assembly (9B) is installed in plunger hole, cylinder body (10B) end face and thrust plate (11B) end face are fitted.
2. a kind of new micro swash plate plunger pump as claimed in claim 1, motor, is characterized in that: ball pivot (5B) endoporus (D) and cylinder body (10B) afterbody cylindrical (d) are Spielpassung.
3. a kind of new micro swash plate plunger pump as claimed in claim 1, motor, it is characterized in that: do not use ball pivot, ripple spring left end elastic force acts on transmission shaft (1B), right-hand member elastic force acts on cylinder body (10B), is that return plate arranges mechanical position limitation with spacing briquetting (14B) or spacing back-up ring.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520598201.6U CN204900173U (en) | 2015-08-11 | 2015-08-11 | Novel miniature inclined disc type plunger pump, motor |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520598201.6U CN204900173U (en) | 2015-08-11 | 2015-08-11 | Novel miniature inclined disc type plunger pump, motor |
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| CN204900173U true CN204900173U (en) | 2015-12-23 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201520598201.6U Active CN204900173U (en) | 2015-08-11 | 2015-08-11 | Novel miniature inclined disc type plunger pump, motor |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104989613A (en) * | 2015-08-11 | 2015-10-21 | 贵阳海之力液压有限公司 | Novel minitype swash plate type plunger pump and motor |
| CN108799035A (en) * | 2018-07-05 | 2018-11-13 | 武汉华喜特种液压设备有限公司 | A kind of synchronous rotary flow Small Plunger Pump |
-
2015
- 2015-08-11 CN CN201520598201.6U patent/CN204900173U/en active Active
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104989613A (en) * | 2015-08-11 | 2015-10-21 | 贵阳海之力液压有限公司 | Novel minitype swash plate type plunger pump and motor |
| CN108799035A (en) * | 2018-07-05 | 2018-11-13 | 武汉华喜特种液压设备有限公司 | A kind of synchronous rotary flow Small Plunger Pump |
| CN108799035B (en) * | 2018-07-05 | 2024-01-09 | 武汉华喜特种液压设备有限公司 | Synchronous rotation flow distribution miniature plunger pump |
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| GR01 | Patent grant |