CN205089594U - Plunger pump - Google Patents
Plunger pump Download PDFInfo
- Publication number
- CN205089594U CN205089594U CN201520734609.1U CN201520734609U CN205089594U CN 205089594 U CN205089594 U CN 205089594U CN 201520734609 U CN201520734609 U CN 201520734609U CN 205089594 U CN205089594 U CN 205089594U
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- CN
- China
- Prior art keywords
- cylinder body
- spring
- inclined hole
- straight pin
- transmission shaft
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- 230000005540 biological transmission Effects 0.000 claims abstract description 43
- 238000010791 quenching Methods 0.000 claims description 4
- 230000000171 quenching effect Effects 0.000 claims description 4
- 229910000831 Steel Inorganic materials 0.000 claims description 3
- 150000004767 nitrides Chemical class 0.000 claims description 3
- 239000010959 steel Substances 0.000 claims description 3
- 238000012423 maintenance Methods 0.000 abstract description 5
- 230000001629 suppression Effects 0.000 abstract 1
- 238000010276 construction Methods 0.000 description 3
- 230000009286 beneficial effect Effects 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 239000000956 alloy Substances 0.000 description 1
- 230000002929 anti-fatigue Effects 0.000 description 1
- 238000009826 distribution Methods 0.000 description 1
- 238000005553 drilling Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000005304 joining Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000005496 tempering Methods 0.000 description 1
Abstract
The utility model provides a plunger pump, include cylinder body (1), set up in transmission shaft (2), cylindric lock (3), the spring of cylinder body (1) interstitial hole, contact department along equidistant be provided with three cylindric lock inclined hole (4) and six spring inclined hole (5) of contact circle of cylinder body (1) and transmission shaft (2), wherein six spring inclined hole (5) share, two double -phase neighbours' no. 3 are organized in three cylindric lock inclined hole (4), cylindric lock (3) interference fit is in cylindric lock inclined hole (4), the port suppression of cylindric lock inclined hole (4) has sharp hole (6) that are used for shutoff cylindric lock (3), the spring sets up in spring inclined hole (5) and the degree of depth of spring inclined hole (5) is less than the height of spring. This plunger pump's cylinder body with transmission shaft simple structure, link and dismantle conveniently, cost of maintenance is low, the axle is high with cylinder body centering precision.
Description
Technical field
The utility model relates to oil hydraulic pump technical field, is specifically related to a kind of plunger pump.
Background technique
Cylinder body is by one of strength member that changes mechanical energy is hydraulic energy in plunger pump, prime mover by transmission shaft by transmission of torque to cylinder body, then cylinder body drives plunger piston slippery boots under the compressing of central spring and return plate, turns round and to-and-fro motion.Thus, the connecting mode of cylinder body transmission shaft is just very important, not only affects the mechanical efficiency of plunger pump, also can connect precision because of cylinder body and transmission shaft, cause cylinder body to produce in rotary course and beat, cause oil distribution casing sharply to wear and tear.
Now in plunger pump, cylinder body and transmission shaft generally adopt involute splines to connect, it is adopt flank centering that involute splines connects, coordinate with axle and there is certain gap, this kind connects for inapplicable by the large axle of radial force, and spline is because wearing and tearing strengthen, spline just can not realize self-alignment impact connection precision, and plunger pump Vibration on Start-up can be caused large, noise aggravates.In addition, the connecting mode of cylinder body and transmission shaft also has monolithic construction, owing to being all-in-one-piece, error is produced because of connecting with regard to not existing, but, monolithic construction is had higher requirement for the explained hereafter of cylinder body and transmission shaft, and positional accuracy is difficult to ensure, production and maintenance cost become higher.
Model utility content
Technical problem to be solved in the utility model is for above prior art, provide a kind of cylinder body and transmission shaft structure simple, link convenient disassembly, maintenance cost is low, axle and the high plunger pump of cylinder body centering precision.
The technological scheme that the utility model adopts is:
A kind of plunger pump, comprise cylinder body, be arranged at the transmission shaft of cylinder body intermediate hole, straight pin, spring, the contacting point of described cylinder body and transmission shaft along contact circle spaced set have three straight pin inclined holes and six spring inclined holes (namely straight pin inclined hole some be located at cylinder body, remainingly be located on transmission shaft, spring inclined hole some be located at cylinder body, remainingly to be located on transmission shaft), wherein six spring inclined holes are divided into adjacent between two three groups by three straight pin inclined holes, described straight pin interference fit is in straight pin inclined hole, the port of described straight pin inclined hole is suppressed with the pointed orifice for shutoff straight pin, described spring is arranged in spring inclined hole and the degree of depth of spring inclined hole is less than the height of spring.
After adopting above structure, the utility model compared with prior art, has the following advantages: this use New-type transmission shaft by three straight pins by transmission of torque to cylinder body, six springs withstand ball pivot return plate is oppressed piston shoes plunger backhaul.Three straight pin inclined holes and the angle of six spring inclined holes on cylinder body are evenly distributed, and every two holes are equal with the angle of plunger hole, to ensure the intensity that can not weaken plunger hole.This model utility structure is simple, and connect convenient disassembly, maintenance cost is low, and transmission shaft is high with cylinder body centering precision, overcomes that the manufacture that cylinder body and axle monolithic construction bring is difficult, positional accuracy is difficult to ensure, produces and the shortcoming such as maintenance cost height.
As preferably, described straight pin inclined hole and the column part of spring inclined hole on cylinder body are greater than the column part on transmission shaft.This setting is more conducive to structural stability, transmission better effects if.
As preferably, the axis of described straight pin inclined hole becomes 2.5 degree with the angle of cylinder body intermediate hole axis, described spring inclined hole axis become 2.5 degree with the angle of cylinder body intermediate hole axis.This angle is more conducive to structural stability, transmission better effects if.
As preferably, described cylinder body with between transmission shaft for small―gap suture coordinates.This setting both ensure that centering precision, was convenient to again dismounting.
As preferably, described straight pin is prepared from by the 45# steel through Quenching Treatment, makes its hardness reach HRC50 ~ 55; Described (assembling) cylinder body, transmission shaft are surfaces nitrided has a layer depth at the nitride layer of 0.3 ~ 0.4mm, and nitrogenize hardness is at more than 850HV.This is provided with the intensity, abrasivity and the antifatigue degree that are beneficial to and improve this plunger pump, is conducive to the working life of improving plunger pump.
Accompanying drawing explanation
Shown in Fig. 1 is the cylinder body of the utility model plunger pump and the assembling schematic diagram of transmission shaft;
Shown in Fig. 2 is the assembling schematic diagram of the cylinder body of the utility model plunger pump, transmission shaft and straight pin.
Wherein: 1, cylinder body; 2, transmission shaft; 3, straight pin; 4, straight pin inclined hole; 5, spring inclined hole; 6, pointed orifice.
Embodiment
Below in conjunction with embodiment, the present invention is further described in detail.Iting is noted that following illustrating is all exemplary, being intended to the invention provides further instruction.Except as otherwise noted, all Science and Technology terms that the present invention uses have the identical meanings usually understood with the technical field of the invention personnel.
As shown in Figure 1, 2, the utility model plunger pump comprises cylinder body 1, is arranged at transmission shaft 2, straight pin 3, the spring of cylinder body 1 intermediate hole.The contacting point of described cylinder body 1 and transmission shaft 2 along contact circle spaced set have three straight pin inclined holes 4 and six spring inclined holes 5 (namely straight pin inclined hole 4 some be located at cylinder body 1, be remainingly located on transmission shaft 2, spring inclined hole 5 some be located at cylinder body 1, be remainingly located on transmission shaft 2), wherein six spring inclined holes 5 are divided into adjacent between two three groups by three straight pin inclined holes 4.Described straight pin inclined hole 4 and the column part of spring inclined hole 5 on cylinder body 1 are greater than the column part on transmission shaft 2.The axis of described straight pin inclined hole 4 becomes 2.5 degree with the angle of cylinder body 1 intermediate hole axis, described spring inclined hole 5 axis become 2.5 degree with the angle of cylinder body 1 intermediate hole axis.
Described straight pin 3 interference fit is in straight pin inclined hole 4, and straight pin 3 one end is shaped with cylinder step, the other end is shaped with chamfering, and straight pin 3 step end face is less than the degree of depth of joining straight pin inclined hole 4 to the length of chamfering end face.Described spring is arranged in spring inclined hole 5 and the degree of depth of spring inclined hole 5 is less than the height of spring, to meet the decrement that spring can reach design.Spring-loaded spring inclined hole 5 bottom surface needs smooth.Transmission shaft 2 by three straight pins 3 by transmission of torque to cylinder body 1, six springs withstand ball pivot return plate is oppressed piston shoes plunger backhaul.
Described cylinder body 1 with between transmission shaft 2 for small―gap suture coordinates.Both ensure that centering precision, be convenient to again dismounting.Transmission shaft 2 matching part one end should be shaped with chamfering, is beneficial to assembling.
Before making cylinder inclined hole and spring inclined hole 5, the hardness of cylinder body 1 and transmission shaft 2 can not differ too large, to ensure to there will not be deflection when drilling.Spring inclined hole 5 is made after transmission shaft 2 and cylinder body 1 are assembled together with straight pin inclined hole 4.After cylinder body 1, transmission shaft 2, straight pin 3 assemble, utilize the plastic deformation of cylinder body 1 to suppress two pointed orifice 6 on the side of each straight pin inclined hole 4, to ensure to seal straight pin 3, block the outlet of straight pin 3.
Described straight pin 3 is prepared from by the 45# steel through Quenching Treatment, makes its hardness reach HRC50 ~ 55.Cylinder body 1 adopts 42CrMo and ZQAL9-4 alloy material to make, and does quenching with Subsequent tempering.The complete cylinder body 1 of described assembling, transmission shaft 2 is surfaces nitrided has a layer depth at the nitride layer of 0.3 ~ 0.4mm, and nitrogenize hardness is at more than 850HV.
Above embodiment is to explanation of the present utility model and explains further, instead of to restriction of the present utility model, any amendment done in interest field of the present utility model, all falls into protection domain of the present utility model.
Claims (5)
1. a plunger pump, comprise cylinder body (1), be arranged at the transmission shaft (2) of cylinder body (1) intermediate hole, straight pin (3), spring, it is characterized in that: described cylinder body (1) has three straight pin inclined holes (4) and six spring inclined holes (5) with the contacting point of transmission shaft (2) along contacting circle spaced set, wherein six spring inclined holes (5) are divided into adjacent between two three groups by three straight pin inclined holes (4), described straight pin (3) interference fit is in straight pin inclined hole (4), the port of described straight pin inclined hole (4) is suppressed with the pointed orifice (6) for shutoff straight pin (3), described spring is arranged in spring inclined hole (5) and the degree of depth of spring inclined hole (5) is less than the height of spring.
2. plunger pump according to claim 1, is characterized in that: described straight pin inclined hole (4) and the column part of spring inclined hole (5) on cylinder body (1) are greater than the column part on transmission shaft (2).
3. plunger pump according to claim 1, it is characterized in that: the axis of described straight pin inclined hole (4) and the angle of cylinder body (1) intermediate hole axis are 2.5 degree, described spring inclined hole (5) axis and the angle of cylinder body (1) intermediate hole axis be 2.5 degree.
4. plunger pump according to claim 1, is characterized in that: described straight pin (3) is prepared from by the 45# steel through Quenching Treatment.
5. plunger pump according to claim 1, is characterized in that: described cylinder body (1), transmission shaft (2) are surfaces nitrided has a layer thickness at the nitride layer of 0.3 ~ 0.4mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520734609.1U CN205089594U (en) | 2015-09-22 | 2015-09-22 | Plunger pump |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520734609.1U CN205089594U (en) | 2015-09-22 | 2015-09-22 | Plunger pump |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205089594U true CN205089594U (en) | 2016-03-16 |
Family
ID=55480287
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520734609.1U Active CN205089594U (en) | 2015-09-22 | 2015-09-22 | Plunger pump |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN205089594U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108331919A (en) * | 2018-03-19 | 2018-07-27 | 江苏可奈力机械制造有限公司 | A kind of novel main shaft housing structure |
-
2015
- 2015-09-22 CN CN201520734609.1U patent/CN205089594U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108331919A (en) * | 2018-03-19 | 2018-07-27 | 江苏可奈力机械制造有限公司 | A kind of novel main shaft housing structure |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| TR01 | Transfer of patent right | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20200731 Address after: 313000 Changxing County City, Zhejiang Province Lin Town Industrial Concentration Area Patentee after: Zhejiang ohmco Hydraulic Technology Co.,Ltd. Address before: 315104 No. 599 Qiming Road, Ningbo, Zhejiang, Yinzhou District Patentee before: NINGBO YINZHOU OU MUKE HYDRAULIC ELECTRICAL Co.,Ltd. |
|
| PE01 | Entry into force of the registration of the contract for pledge of patent right | ||
| PE01 | Entry into force of the registration of the contract for pledge of patent right |
Denomination of utility model: Plunger pump Effective date of registration: 20231115 Granted publication date: 20160316 Pledgee: Changxin Zhejiang rural commercial bank Limited by Share Ltd. Pledgor: Zhejiang ohmco Hydraulic Technology Co.,Ltd. Registration number: Y2023980065557 |