CN208153261U - Cam-type axial piston pump - Google Patents
Cam-type axial piston pump Download PDFInfo
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- CN208153261U CN208153261U CN201820236355.4U CN201820236355U CN208153261U CN 208153261 U CN208153261 U CN 208153261U CN 201820236355 U CN201820236355 U CN 201820236355U CN 208153261 U CN208153261 U CN 208153261U
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- ball bearing
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- groove ball
- type axial
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Abstract
The utility model discloses a kind of hydraulic cam-type axial piston pumps, including drive shaft, flat key, deep groove ball bearing, shell, sliding support, flexural pivot, piston shoes plunger assembly, cylinder body, flow valve body, needle bearing, valve plate, central compressed spring, return plate and swash plate：The needle bearing and deep groove ball bearing to play a supportive role is arranged in the drive shaft, the deep groove ball bearing is set in shell, and the drive shaft is connect by flat key with motor；The cylinder body is matched with valve plate, and the cylinder body passes through involute spline and driving axis connection；The piston shoes plunger assembly is mounted on cylinder body one week, and is pressed on swash plate by central compressed spring by flexural pivot and return plate.In view of the foregoing defects the prior art has, the hydraulic cam-type axial piston pump, can improve plunger pump durability to a certain extent, reduce use and maintenance cost and the service performance for significantly improving associated hydraulic system.
Description
Technical field
The utility model relates to a kind of cam-type axial piston pumps.
Background technique
With the fast development of modern industry and the continuous improvement of the degree of automation, hydraulic technique has also obtained quick hair
Exhibition.The major reason of effective stable operation of hydraulic system is：Hydraulic pump plays very important key effect, hydraulic
Power mechanism is belonged in system, is the heart of hydraulic system.Unstable strong heart, hydraulic system cannot pacify
It steadily runs entirely, and then the link that meeting dictates host is efficiently produced.Accordingly, it can be said that hydraulic pump is direct relation its people
The core component of production and living.
The type of hydraulic pump mainly includes plunger pump（Axial plunger pump, radial plunger pump etc.）, vane pump（Quantitative blade
Pump, variable vane pump etc.）, gear pump（External gear rotary pump, crescent gear pump etc.）, screw pump etc., wherein plunger pump be according to
It is moved back and forth in cylinder body by plunger, so that the volume of seal operation cavity is changed to realize the process of oil suction, pressure oil.Currently
The industrial hydraulic planger pump of the mesolow of domestic production, due to being influenced by production technology and components material, service life
Relatively low, problem is concentrated mainly on key components and parts such as valve plate, waves support (slidably supporting), cylinder body, piston shoes plunger assembly
On, cause the problem of plunger pump use, maintenance cost height and associated hydraulic system service performance decline.China's Hydraulic Industry
Also rarely annual value of production up to 1,000,000,000 yuan or more of enterprise, even the enterprise that annual value of production is more than 500,000,000 yuan also cans be counted on one's fingers, the whole industry
Year gross sales amount be no more than the annual sales amount of external large hydraulic industry giant.Do not have and overseas enterprise's phase in mating industry
When the ability of competition, imported product will be surging to the artificial control means of domestic market and have nothing to fear.Engineering machinery
The fact that most of profit is taken away by auxiliary equipment had both allowed host manufacturing enterprise agonizing, while they have no way out again.It is based on
The fund of such case, main engine plants and other industrial fields just constantly enters hydraulic industry, and it is hydraulic to invest more than 10 hundred million yuan of entrance
Industry.And this situation will undoubtedly increase the competition intensity in industry, change original industrial pattern and order.Plunger pump is one
The typical positive displacement hydraulic of kind is converted into the mechanical energy of input the pressure energy of liquid by prime mover driven, then with pressure
Power, the form of flow are input in system, it is the power source of hydraulic system, since it can convey liquid under high pressure, because
This various industries in industrial production and daily life is widely used, and is had a vast market foreground.
Utility model content
In view of the foregoing defects the prior art has, the utility model provides a kind of hydraulic cam-type axial piston pump,
It can improve plunger pump durability to a certain extent, reduce use and maintenance cost and significantly improve associated hydraulic system
Service performance.
To achieve the above objectives, the technical solution of the utility model is：
One kind provided by the utility model is hydraulic to use cam-type axial piston pump, including drive shaft, flat key, deep-groove ball axis
It holds, shell, sliding support, flexural pivot, piston shoes plunger assembly, cylinder body, variable piston rod, variable piston cylinder, hexagonal push rod, adjustment
Bar, flow valve body, needle bearing, valve plate, central compressed spring, return plate and swash plate；Wherein：
The needle bearing and deep groove ball bearing to play a supportive role, the deep groove ball bearing setting are arranged in the drive shaft
In in shell, the drive shaft is connect by flat key with motor；
The cylinder body is matched with valve plate；The cylinder body passes through involute spline and driving axis connection；
The piston shoes plunger assembly is mounted on cylinder body one week, and is pressed in tiltedly by central compressed spring by flexural pivot and return plate
On disk.
It is further improved as the utility model：After the output shaft end of the shell is connect with flow valve body with screw,
By positioning finger setting；And the bearing block for installing deep groove ball bearing and needle bearing is provided on shell and flow valve body
Hole.
It is further improved as the utility model：Side on the deep groove ball bearing close to shell output shaft is provided with
Outside framework oil seal for preventing hydraulic oil from exosmosing.
It is further improved as the utility model：The drive shaft and deep groove ball bearing are clearance fit.
It is further improved as the utility model：The half a month cambered surface of the sliding support and the binaural fit of swash plate, institute
Stating swash plate can be around the axis reciprocally swinging within a certain angle of sliding support.
It is further improved as the utility model：The piston shoes plunger assembly amounts to 9 pairs.
After shell output shaft end is connect with flow valve body with screw, by positioning finger setting.On shell and flow valve body
It is provided with the bearing saddle bore for installing deep groove ball bearing and needle bearing respectively.Close to the side of shell output shaft on deep groove ball bearing
The outside framework oil seal for preventing hydraulic oil from exosmosing is installed.Drive shaft utilizes deep groove ball bearing and needle bearing to feel relieved radially；It drives
Moving axis and deep groove ball bearing are clearance fit, guarantee that the little drive shaft of axially loaded is fixed axial position with retaining ring in the axial direction
The deep groove ball bearing set is fixed.
Compared with prior art, a kind of novel swash plate type axial plunger pump provided by the utility model has following Patent Law
The beneficial effect of meaning：
1., based on the basis of original plunger pump wall thickness, entirety wall thickness is added in order to ensure the pump housing highest pressure resistance limit
Thick 1mm, intensity increases by 20%, and safety coefficient is increased to 5 or so.
2. piston shoes are as one of components crucial in plunger pump, in order to improve its wear resistence, the utility model is using special
Raw material of the different alloyed copper as piston shoes are worn with this to reduce.
Detailed description of the invention
Fig. 1 is the schematic diagram of internal structure of cam-type axial piston pump described in the utility model.
Fig. 2 is the schematic three dimensional views of cam-type axial piston pump described in the utility model.
Fig. 3 is the piston shoes plunger assembly schematic diagram of cam-type axial piston pump described in the utility model.
Fig. 4 is the half a month cambered surface of the sliding support of cam-type axial piston pump described in the utility model and the ears of swash plate
Fit structure schematic diagram.
In figure：1, drive shaft；2, flat key；3, deep groove ball bearing；4, shell；5, it slidably supports；6, flexural pivot；7, piston shoes plunger
Component；8, cylinder body；9, variable piston rod；10, variable piston cylinder；11, hexagonal push rod；12, bar is adjusted；13, flow valve body；14,
Needle bearing；15, valve plate；16, central compressed spring；17, return plate；18, swash plate；71, piston shoes；A, the quick-fried weak place of shell.
Specific embodiment
In order to be easy to understand the technical means, creative features, achievement of purpose, and effectiveness of the utility model, under
Face combines and is specifically illustrating, and the utility model is further described.
Embodiment 1
The cam-type axial piston pump of the present embodiment, as shown in Figure 1, include drive shaft 1, flat key 2, deep groove ball bearing 3,
Shell 4, sliding support 5, flexural pivot 6, piston shoes plunger assembly 7, cylinder body 8, flow valve body 13, needle bearing 14, valve plate 15, center
Compressed spring 16, return plate 17 and swash plate 18：The needle bearing 14 and deep groove ball bearing to play a supportive role is arranged in drive shaft 1
3, deep groove ball bearing 3 is set in shell 4, and drive shaft 1 is connect by flat key 2 with motor；Cylinder body 8 and valve plate 15 match
It closes, cylinder body 8 is connect by involute spline with drive shaft 1；Piston shoes plunger assembly 7 is mounted on cylinder body 8 one weeks, and by central compressed
Spring 16 is pressed on swash plate 18 by flexural pivot 6 and return plate 17.
After the output shaft end of shell 4 is connect with flow valve body 13 with screw, by positioning finger setting；And shell 4 and flow
The bearing saddle bore for installing deep groove ball bearing 3 and needle bearing 14 is provided on valve body 13.Close to shell on deep groove ball bearing 3
The side of 4 output shaft of body is provided with the outside framework oil seal for preventing hydraulic oil from exosmosing.Drive shaft 1 and deep groove ball bearing 3 are gap
Cooperation.Sliding support 5 half a month cambered surface and swash plate 18 binaural fit, swash plate 18 can around sliding support 5 axis at certain angle
Reciprocally swinging in spending.Piston shoes plunger assembly 7 amounts to 9 pairs.
5 half a month cambered surfaces and 18 binaural fit of swash plate are slidably supported, swash plate 18 can be around sliding support axis within a certain angle
Reciprocally swinging.Cylinder body 8 and valve plate 15 cooperate, and cylinder body 8 is connect by involute spline with drive shaft 1, and is driven by drive shaft 1
Continuous rotation；The mating surface of cylinder body 8 and valve plate 15 and swash plate 18 and sliding support 5 continues relative motion, generates constantly circulation
The cavity of variation realizes the cyclic process of oil suction and oil extraction.
Plunger pump involved by the utility model, practical pressure are divided into B grades and C grades, and wherein B grades of range of regulation are 1.2-
7MPa belongs to low pressure scope, and C grades of range of regulation are 2-16MPa, belong to mesohigh scope, especially set out, works for highest
Pressure reaches the plunger pump of 16MPa, and components especially main body section intensity requirement is higher, in this regard, must make stringent strong
Degree is checked.
Shell weak part thickness actual value about 5mm, and due to the influence of the medium factor of stress collection, which is
The most weak place of the entire pump housing, ensure that the position intensity also ensures that strength problem of the entire hydraulic pump in real use.
As shown in Fig. 2, threedimensional model curved surface label A arrow meaning is above-mentioned strength weak position, the utility model is in original plunger
On the basis of pumping thickness, the pump housing highest pressure resistance limit is improved, pump housing integral thickness is increased into 1mm, intensity about increases by 20%, peace more
Overall coefficient will increase to 5 or so, it is ensured that can work normally under the operating pressure of 16MPa.
Piston shoes plunger assembly 7 is one of components crucial in plunger pump, and the superiority and inferiority of component design is directly related to column
Fill in the performance and used life of pump.Be illustrated in figure 3 schematic diagram of the assembled portion in relation to piston shoes plunger assembly 7, omit the pump housing and
Partially other components.In Fig. 3 the arrow meaning part of label 71 be piston shoes, it is associated be plunger, 9 sets in total.Piston shoes
71 are attached on swash plate, and plunger is mounted in cylinder body inner prop consent, when driving quickly rotation by motor with main shaft, 18 companion of swash plate
The rotary motion around axis is acted as with main shaft one, and cylinder body 8 does not rotate at this time.Plunger can be as swash plate 18 be due to being axially moved
The variation of state and make piston motion in cylinder body 8, ceaselessly oil suction, oil extraction, to realize the main basic function of hydraulic pump.
It can thus be seen that piston shoes 71 are not slide on swash plate 18 with gap, without a pause, while plunger exists in hydraulic pump works
Without stopping make piston motion in cylinder body 8.Such high-frequency movement, will certainly enable the by-produced abrasion of piston shoes plunger, finally may be used
Failure phenomenon can occur, and then plunger pump is caused to fail.Piston shoes plunger assembly 7 is the key components and parts of plunger pump, to plunger pump
The influence of service life is direct and important.Raw material of the design by using special alloyed copper as piston shoes 71, and
And plunger head is correctly designed, can satisfy plunger pump piston shoes plunger assembly under various flow conditions can work normally, and
Reduce the abrasion of component.Fig. 4 be cam-type axial piston pump described in the utility model sliding support half a month cambered surface and tiltedly
The binaural fit structural schematic diagram of disk.
Have been shown and described above the utility model basic principles and main features and the utility model it is excellent
Point.It should be understood by those skilled in the art that the utility model is not limited by examples detailed above, examples detailed above and say
Only illustrate the principles of the present invention described in bright book, on the premise of not departing from the spirit and scope of the utility model this reality
It will also have various changes and improvements with novel, these various changes and improvements fall within the scope of the claimed invention.This
Utility model is claimed range and is defined by appended claims and its equivalent.
Claims (6)
1. hydraulic use cam-type axial piston pump, including drive shaft, flat key, deep groove ball bearing, shell, sliding support, flexural pivot, cunning
Boots plunger assembly, cylinder body, variable piston rod, variable piston cylinder, hexagonal push rod, adjustment bar, flow valve body, needle bearing, flow
Disk, central compressed spring, return plate and swash plate；It is characterized in that：
The needle bearing and deep groove ball bearing to play a supportive role is arranged in the drive shaft, the deep groove ball bearing is set to shell
In vivo, the drive shaft is connect by flat key with motor；
The cylinder body is matched with valve plate；The cylinder body passes through involute spline and driving axis connection；
The piston shoes plunger assembly is mounted on cylinder body one week, and is pressed in swash plate by flexural pivot and return plate by central compressed spring
On.
2. hydraulic cam-type axial piston pump according to claim 1, it is characterised in that：The output shaft end of the shell
After being connect with flow valve body with screw, by positioning finger setting；And it is provided on shell and flow valve body for installing zanjon
The bearing saddle bore of ball bearing and needle bearing.
3. hydraulic cam-type axial piston pump according to claim 1, it is characterised in that：It is leaned on the deep groove ball bearing
The side of nearly shell output shaft is provided with the outside framework oil seal for preventing hydraulic oil from exosmosing.
4. hydraulic cam-type axial piston pump according to claim 1, it is characterised in that：The drive shaft and deep-groove ball
Bearing is clearance fit.
5. hydraulic cam-type axial piston pump according to claim 1, it is characterised in that：The half a month of the sliding support
The binaural fit of cambered surface and swash plate, the swash plate can be around the axis reciprocally swingings within a certain angle of sliding support.
6. hydraulic cam-type axial piston pump according to claim 1, it is characterised in that：The piston shoes plunger assembly is total
9 pairs of meter.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820236355.4U CN208153261U (en) | 2018-02-09 | 2018-02-09 | Cam-type axial piston pump |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820236355.4U CN208153261U (en) | 2018-02-09 | 2018-02-09 | Cam-type axial piston pump |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN208153261U true CN208153261U (en) | 2018-11-27 |
Family
ID=64382726
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201820236355.4U Active CN208153261U (en) | 2018-02-09 | 2018-02-09 | Cam-type axial piston pump |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN208153261U (en) |
-
2018
- 2018-02-09 CN CN201820236355.4U patent/CN208153261U/en active Active
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