CN203239555U - Plunger sliding shoe component - Google Patents
Plunger sliding shoe component Download PDFInfo
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- CN203239555U CN203239555U CN 201320289979 CN201320289979U CN203239555U CN 203239555 U CN203239555 U CN 203239555U CN 201320289979 CN201320289979 CN 201320289979 CN 201320289979 U CN201320289979 U CN 201320289979U CN 203239555 U CN203239555 U CN 203239555U
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- plunger
- oil
- piston shoes
- spherical head
- spherical
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Abstract
The utility model relates to a plunger sliding shoe component which comprises a sliding shoe body and a plunger body matched with the sliding shoe body. A spherical head portion is arranged at one end of the plunger body in a protruding mode. A cylindrical concave cavity is arranged at the other end of the plunger body. An oil injection hole which penetrates through the spherical head portion is formed in the plunger body. A spherical concave cavity matched with the spherical head portion is arranged on the sliding shoe body in a concave mode. An oil through hole which penetrates through the sliding shoe body is formed in the sliding shoe body which is matched with the plunger body in a swinging mode by matching of the spherical concave cavity and the spherical head portion. An annular oil groove is formed in the bottom of the sliding shoe body. An Archimedes-spiral-line-shaped oil dividing groove is formed between the annular oil groove and the through oil hole. According to the plunger sliding shoe component, the Archimedes-spiral-line-shaped oil dividing groove is used for replacing an existing oil dividing groove of an annular structure, the characteristics of an Archimedes spiral line are used, so that oil flow in the oil dividing groove is smooth, oil out going is continuous and even, and pressure on the oil dividing groove is stable.
Description
Technical field
The utility model relates to a kind of assembly of plunger pump, especially refers to a kind of plunger piston slippery boots assembly.
Background technique
Plunger is the key position in the swash plate class plunger pump, because swash plate rotates relative to cylinder body, the extrusion stroke of plunger relies on swash plate to promote piston shoes and plunger, makes plunger retraction cylinder hole, and the suction stroke of plunger is by concentrating spring by return plate and piston shoes shoulder plunger to be pulled out the cylinder hole.Because piston shoes do oscillating motion to plunger, thereby adopt spherical hinge to be connected cooperation between piston shoes and the plunger.
The piston shoes that have in the plunger piston slippery boots assembly of tradition in the plunger pump adopt the larger plastic materials of specific elongation to support, and fit with the outer spherical surface of bulb after with piston shoes extrusion-deformation and roll extrusion by special tooling, and this process is called the bag ball.Yet in bag ball process, the piston shoes distortion is inhomogeneous, makes the outer spherical surface of piston shoes inner ball surface and bulb be difficult to fully fit, and causes the contacting point specific pressure higher, the concentrated wear aggravation.Piston shoes are in the process of push-and-pull bulb simultaneously, the impulsive load that sphere is suffered and alternate load are very large, because the distortion of plastic material, sphere closing in place of the piston shoes that plastic material supports is opened easily, and the gap of piston shoes and bulb is increased, and plunger effective stroke shortens, the flow of plunger pump reduces, piston shoes and plunger break away from fully when serious, and namely so-called " taking off the boots phenomenon " finally causes plunger pump to work.
Minute oil groove on the piston shoes of most plunger piston slippery boots assemblies adopts loop configuration, and there is minute not smooth phenomenon of oil in it, causes easily the obstruction of oil circuit and causes plunger pump to work.
Summary of the invention
Technical problem to be solved in the utility model is the present situation for prior art, provides simple in structure, easy to process, divides smoothly a kind of plunger piston slippery boots assembly of oil.
The utility model solves the problems of the technologies described above the technological scheme that adopts:
A kind of plunger piston slippery boots assembly, comprise the piston shoes body and with the suitable plunger body of piston shoes body, wherein, one end of plunger body convexes with spherical head, its the other end has set up reentrant cylindrical cavity, offer the oil hole that runs through spherical head on the plunger body, be concaved with the spherical cavity suitable with spherical head on the piston shoes body, offer the oil through that runs through the piston shoes body on the piston shoes body, the piston shoes body is by cooperatively interacting and swing with plunger body and to cooperate between spherical cavity and the spherical head; The bottom of piston shoes body is provided with annular oil groove, offers minute oil groove of spiral of Archimedes type between annular oil groove and the oil through.
The technical measures of optimizing also comprise:
The outer surface snug fit of the internal surface of above-mentioned spherical cavity and spherical head.
One end of above-mentioned oil through is offered and is equipped with tapered opening, and its other end is offered and is equipped with disk shaped recess.
The outlet of above-mentioned oil hole is shaped with horn opening.
Inside recessed formation annular cavity between above-mentioned plunger body and the spherical head.
The cross section of above-mentioned minute oil groove is trapezoidal.
The Inner end of above-mentioned reentrant cylindrical cavity is hemispherical dome structure.
Be provided with the step round platform on the above-mentioned piston shoes body.
A kind of plunger piston slippery boots assembly of the present utility model, adopt an end of plunger body to convex with spherical head, its the other end has set up reentrant cylindrical cavity, offer the oil hole that runs through spherical head on the plunger body, be concaved with the spherical cavity suitable with spherical head on the piston shoes body, offer the oil through that runs through the piston shoes body on the piston shoes body, the piston shoes body is by cooperatively interacting and swing with plunger body and to cooperate between spherical cavity and the spherical head; The bottom of piston shoes body is provided with annular oil groove, offers minute oil groove of spiral of Archimedes type between annular oil groove and the oil through.This plunger piston slippery boots assembly adopts minute oil groove of spiral of Archimedes type to replace minute oil groove of existing loop configuration, and the characteristics that it utilizes spiral of Archimedes make oil flowing in minute oil groove more smooth, fuel-displaced continuous uniform, and minute oil groove pressure is stable;
In addition, the horn opening that the outlet of oil hole arranges, the tapered opening that arranges on the oil through makes the operation of oil hole and oil through joint more smooth and easy.
Description of drawings
Fig. 1 is the utility model embodiment's cross-sectional schematic;
Fig. 2 is the cross-sectional schematic of piston shoes body among Fig. 1;
Fig. 3 is the left view of Fig. 2;
Fig. 4 is I section enlarged view among Fig. 2;
Fig. 5 is the cross-sectional schematic of plunger body among Fig. 1.
Embodiment
Embodiment is described in further detail the utility model below in conjunction with accompanying drawing.
Such as Fig. 1 to Figure 5 shows that structural representation of the present utility model,
Reference character wherein is: piston shoes body 1, spherical cavity 11, internal surface 11a, oil through 12, tapered opening 12a, disk shaped recess 12b, annular oil groove 13, spiral of Archimedes type groove 14, step round platform 15, plunger body 2, spherical head 21, outer surface 21a, reentrant cylindrical cavity 22, oil hole 23, horn opening 23a, annular cavity 24.
It is extremely shown in Figure 5 such as Fig. 1,
A kind of plunger piston slippery boots assembly of the present utility model, comprise piston shoes body 1 and with the suitable plunger body 2 of piston shoes body 1, wherein, one end of plunger body 2 convexes with spherical head 21, its the other end has set up reentrant cylindrical cavity 22, offer the oil hole 23 that runs through spherical head 21 on the plunger body 2, be concaved with the spherical cavity 11 suitable with spherical head 21 on the piston shoes body 1, offer the oil through 12 that runs through piston shoes body 1 on the piston shoes body 1, piston shoes body 1 is by cooperatively interacting and swing with plunger body 2 and to cooperate between spherical cavity 11 and the spherical head 21; The bottom of piston shoes body 1 is provided with annular oil groove 13, offers minute oil groove 14 of spiral of Archimedes type between annular oil groove 13 and the oil through 12.
Among the embodiment, the outer surface 21a snug fit of the internal surface 11a of spherical cavity 11 and spherical head 21.
Among the embodiment, an end of oil through 12 is offered and is equipped with tapered opening 12a, and its other end is offered and is equipped with disk shaped recess 12b.
Among the embodiment, the outlet of oil hole 23 is shaped with horn opening 23a.
Among the embodiment, inside recessed formation annular cavity 24 between plunger body 2 and the spherical head 21.
Among the embodiment, the cross section of minute oil groove 14 is trapezoidal.
Among the embodiment, the Inner of reentrant cylindrical cavity 22 end is hemispherical dome structure.
Among the embodiment, be provided with step round platform 15 on the piston shoes body 1.
As shown in Figure 1, be arranged with spherical cavity 11 on the piston shoes body 1, and be convexly equipped with spherical head 21 on the plunger body 2, spherical cavity 11 spherical head 21 is wrapped in wherein and form the bag bulb, spherical cavity 11 cooperatively interacts with spherical head 21 and piston shoes body 1 and plunger body 2 swings is combined together, the inside recessed formation annular cavity 24 of the root of spherical head 21, the setting of annular cavity 24, the pendulum angle of spherical head 21 in spherical cavity 11 increased, thereby make the swing between plunger body 2 and the piston shoes body 1 more flexible.
Oil through 12 UNICOMs on oil hole 23 on the plunger body 2 and the piston shoes body 1 and form oily path, horn opening 23a is offered in the outlet of oil hole 23, and tapered opening 12a is offered on the right side of oil through 12, and horn opening 23a and tapered opening 12a are over against setting, so design of structure, when spherical head 11 during in spherical cavity 21 interior swing, can guarantee the unobstructed of oily path and avoid occuring oil leakage phenomenon.
As shown in Figure 2, be provided with step round platform 15 on the piston shoes body 1, the setting of step round platform 15 alleviates the weight of piston shoes body 1, thereby reduces the suffered load of spherical cavity 11, and then improves its working life.
As shown in Figure 3, the bottom surface of piston shoes body 1 is provided with annular oil groove 13, its center be provided with disk shaped recess 12b and, disk shaped recess 12b center communicates with oil through 12, minute oil groove 14 by the spiral of Archimedes type between disk shaped recess 12b and the annular oil groove 13 is connected, and the characteristics that it utilizes spiral of Archimedes make mobile more smooth in minute oil groove 14 of oil, fuel-displaced continuous uniform, minute oil groove 14 pressures are stable.
As shown in Figure 4, the cross section of minute oil groove 14 is trapezoidal, and the trapezoid cross section makes the oil capacity that has increased as much as possible minute oil groove 14, thereby guarantees the smoothness of oil flow in minute oil groove 14.
As shown in Figure 5, the left side outer wall of plunger body 2 is shaped with conical surface, and its right-hand member outer wall is shaped with outer chamfering; Oil hole 23 right-hand members are over against the hemispherical dome structure cavity of reentrant cylindrical cavity 22 left ends on the plunger body 2, and the right-hand member of this reentrant cylindrical cavity 22 is shaped with interior chamfering.
Piston shoes body 1 adopts the ZQAl9-4 material to make, and does modified heat treatment, makes its hardness reach HRC26-32, plunger body 2 adopts the 20CrMnTi material to make, and does modified heat treatment, makes its hardness reach HRC28-32, quenching heat treatment is made in the bag bulb, and Qi Bao bulb hardness reaches HRC40-45; Behind the bag ball, nitriding treatment is made on the surface in bag bulb, nitrogenize layer depth 0.3mm to 0.4mm makes its surface hardness reach HV900-1100; The sharp edge passivation is made on surface to piston shoes body 1 and plunger body 2, and the flatness of smoothing burr to guarantee that it is surperficial.
Most preferred embodiment of the present utility model is illustrated, and various variations or the remodeling made by those of ordinary skills can not break away from scope of the present utility model.
Claims (8)
1. plunger piston slippery boots assembly, comprise piston shoes body (1) and with the suitable plunger body (2) of piston shoes body (1), it is characterized in that: an end of described plunger body (2) convexes with spherical head (21), its the other end has set up reentrant cylindrical cavity (22), offer the oil hole (23) that runs through spherical head (21) on the described plunger body (2), be concaved with the spherical cavity (11) suitable with spherical head (21) on the described piston shoes body (1), offer the oil through (12) that runs through piston shoes body (1) on the described piston shoes body (1), described piston shoes body (1) is by cooperatively interacting and swing with plunger body (2) and to cooperate between spherical cavity (11) and the spherical head (21); The bottom of described piston shoes body (1) is provided with annular oil groove (13), offers minute oil groove (14) of spiral of Archimedes type between described annular oil groove (13) and the oil through (12).
2. a kind of plunger piston slippery boots assembly according to claim 1 is characterized in that: outer surface (21a) snug fit of the internal surface (11a) of described spherical cavity (11) and spherical head (21).
3. a kind of plunger piston slippery boots assembly according to claim 2, it is characterized in that: an end of described oil through (12) is offered and is equipped with tapered opening (12a), and its other end is offered and is equipped with disk shaped recess (12b).
4. a kind of plunger piston slippery boots assembly according to claim 3, it is characterized in that: the outlet of described oil hole (23) is shaped with horn opening (23a).
5. a kind of plunger piston slippery boots assembly according to claim 4 is characterized in that: inside recessed formation annular cavity (24) between described plunger body (2) and the spherical head (21).
6. a kind of plunger piston slippery boots assembly according to claim 5 is characterized in that: described minute oil groove (14) the cross section be trapezoidal.
7. a kind of plunger piston slippery boots assembly according to claim 6 is characterized in that: the Inner end of described reentrant cylindrical cavity (22) is hemispherical dome structure.
8. a kind of plunger piston slippery boots assembly according to claim 6 is characterized in that: be provided with step round platform (15) on the described piston shoes body (1).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320289979 CN203239555U (en) | 2013-05-24 | 2013-05-24 | Plunger sliding shoe component |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320289979 CN203239555U (en) | 2013-05-24 | 2013-05-24 | Plunger sliding shoe component |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203239555U true CN203239555U (en) | 2013-10-16 |
Family
ID=49316863
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201320289979 Expired - Fee Related CN203239555U (en) | 2013-05-24 | 2013-05-24 | Plunger sliding shoe component |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203239555U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107387351A (en) * | 2017-09-04 | 2017-11-24 | 杭州力龙液压有限公司 | Plunger assembly, plunger pump and hydraulic transmission |
| CN110725783A (en) * | 2019-11-06 | 2020-01-24 | 四川航天烽火伺服控制技术有限公司 | Plunger pump and plunger piston shoe assembly thereof |
-
2013
- 2013-05-24 CN CN 201320289979 patent/CN203239555U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107387351A (en) * | 2017-09-04 | 2017-11-24 | 杭州力龙液压有限公司 | Plunger assembly, plunger pump and hydraulic transmission |
| CN110725783A (en) * | 2019-11-06 | 2020-01-24 | 四川航天烽火伺服控制技术有限公司 | Plunger pump and plunger piston shoe assembly thereof |
| CN110725783B (en) * | 2019-11-06 | 2022-04-12 | 四川航天烽火伺服控制技术有限公司 | Plunger pump and plunger piston shoe assembly thereof |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20131016 Termination date: 20190524 |