CN202746179U - Electric hydraulic pump - Google Patents
Electric hydraulic pump Download PDFInfo
- Publication number
- CN202746179U CN202746179U CN201220392710XU CN201220392710U CN202746179U CN 202746179 U CN202746179 U CN 202746179U CN 201220392710X U CN201220392710X U CN 201220392710XU CN 201220392710 U CN201220392710 U CN 201220392710U CN 202746179 U CN202746179 U CN 202746179U
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- pump
- cam
- pressure pump
- oil
- low pressure
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Abstract
The utility model discloses an electric hydraulic pump. The electric hydraulic pump comprises a motor and a pump body, wherein the pump body comprises an oil suction pipe, a low-pressure pump assembly, a high-pressure pump assembly, an oil pump valve block assembly and a cam assembly, wherein one end of the oil suction pipe is provided with a filter screen, the filter screen is immersed in hydraulic oil in an oil cylinder, and the other end of the oil suction pipe is communicated with the low-pressure pump assembly; the low-pressure pump assembly comprises a low-pressure pump body, a low-pressure pump runner, a low-pressure pump roller and a cam fixing seat; a high-pressure oil pipe is communicated with the low-pressure pump assembly and the oil pump valve block assembly; the high-pressure pump assembly comprises a high-pressure pump body and a one-way valve body, the high-pressure pump body is provided with three plungers and one pre-tightened spring, the plungers are uniformly arranged in a high-pressure valve body, the pre-tightened spring is arranged in a spring seat hole at the center of the high-pressure valve body, and the pre-tightened spring is provided with a steel ball; and the one-way valve body is internally provided with three oil inlet one-way valves and three oil outlet one-way valves. According to the electric hydraulic pump disclosed by the utility model, the volume efficiency is high, the leakage is less, and the work under high pressure can be carried out; and the functional distribution is reasonable, the structure is compact, and the electric hydraulic pump is easily matched with similar products.
Description
Technical field
The utility model is a kind of electric hydraulic pump, is a kind of equipment for Output pressure, belongs to the hydraulic machinery field.
Background technique
At present, hydraulic hoist, lifting machine are widely used in mechanical industry, and it is by motor rotation driven gear pump work, are a kind of working pump of hydraulic energy with electric energy conversion.But owe rationally because of the structural design of complete machine, will cause operating the phenomenons such as inconvenient, difficult and supporting.
The purpose of this utility model is to provide a kind of electric hydraulic pump, to solve the problems such as the complete machine structure design owes reasonable, operation is inconvenient, difficult and supporting, the demand of satisfying the market.
Summary of the invention
The purpose of this utility model be to provide a kind of reasonable in design, volumetric efficiency high, leak little, can under high pressure work, easily and the supporting electric hydraulic pump of like product.
It is that this electric hydraulic pump comprises motor and the pump housing that the utility model solves the problems of the technologies described above the technological scheme that adopts, and the described pump housing comprises fuel sucking pipe, low pressure pump assembly, high pressure pump assembly, oil pump valve block assembly and cam pack; One end of described fuel sucking pipe has filter screen, and filter screen is immersed in the in-oil cylinder hydraulic oil, and the other end of fuel sucking pipe and low pressure pump assembly are communicated with; Described low pressure pump assembly comprises the low pressure pump pump housing, low pressure pump runner, low pressure pump roller and cam fixed base; High-pressure oil pipe is communicated with low pressure pump assembly and oil pump valve block assembly; Described high pressure pump assembly comprises the high-pressure service pump pump housing and check valve body, the high-pressure service pump pump housing is provided with three plungers and a preloading spring, plunger evenly is arranged in the high pressure valve body, and preloading spring is arranged in the spring base hole at high pressure valve body center, is placed with steel ball on the preloading spring; Be provided with three in line check valves and three oil outlet one-way valves in the described check valve body; Described cam pack comprises cam, axial needle bearing, deep groove ball bearing, cam swash plate, cam swash plate stationary axle, axial needle thrust bearing and needle bearing.
The low pressure pump pump housing in the low pressure pump assembly described in the utility model is fixed on above the cam fixed base, and the low pressure pump runner links to each other with electric machine main shaft by keyway, and the low pressure pump roller is distributed in the low pressure pump runner.
Cam swash plate stationary axle in the cam pack described in the utility model links to each other with electric machine main shaft by coupling, between cam swash plate and the cam swash plate stationary axle needle bearing is installed, cam swash plate stationary axle and needle bearing are fixed in the cam fixed base, and cam swash plate stationary axle is installed on the cam by deep groove ball bearing; Cam pack is fixed on the cam fixed base by steel ball and preloading spring.
Present technology of the present utility model is compared the advantage that has: volumetric efficiency is high, leaks littlely, can under high pressure work; Function distribution is reasonable, compact structure, easily and like product supporting.
Description of drawings
Fig. 1 is the erection drawing of present embodiment.
Fig. 2 is the structural representation of present embodiment.
Fig. 3 is the schematic top plan view of present embodiment.
Label declaration: motor a, the fuel sucking pipe I, the low pressure pump pump housing 1, low pressure pump runner 2, low pressure pump roller 3, cam fixed base 4, cam 5, axial needle bearing 6, deep groove ball bearing 7, cam swash plate 8, cam swash plate stationary axle 9, axial needle thrust bearing 10, oil outlet one-way valve 11, the high-pressure service pump pump housing 12, plunger 13, check valve body 14, steel ball 15, in line check valve 16, steel ball 17, preloading spring 18, high-pressure oil pipe 19, oil outlet 20, return opening 21, needle bearing 22, relief valve 23.
Embodiment
Below in conjunction with embodiment the utility model is described in further detail, following examples are to explanation of the present utility model and the utility model is not limited to following examples.
Embodiment 1: as shown in Figures 1 to 3, the annexation of present embodiment is:
Electric hydraulic pump comprises motor a and the pump housing; Its middle pump body comprises fuel sucking pipe I, low pressure pump assembly, high pressure pump assembly, oil pump valve block assembly and cam pack.
One end of fuel sucking pipe I has filter screen, and filter screen is immersed in the in-oil cylinder hydraulic oil, and the other end of oil pipe and low pressure pump assembly are communicated with.
The low pressure pump assembly comprises the low pressure pump pump housing 1, low pressure pump runner 2, low pressure pump roller 3 and cam fixed base 4.The low pressure pump pump housing 1 is fixed on above the cam fixed base 4, and low pressure pump runner 2 links to each other with electric machine main shaft by keyway, and low pressure pump roller 3 is distributed in the low pressure pump runner 2.High-pressure oil pipe 19 is communicated with low pressure pump assembly and oil pump valve block assembly.
High pressure pump assembly comprises the high-pressure service pump pump housing 12 and check valve body 14.The high-pressure service pump pump housing 12 comprises three plungers 13 and a preloading spring 18, plunger 13 evenly is arranged in the high pressure valve body, preloading spring 18 is arranged in the spring base hole at high pressure valve body center, is placed with steel ball 17 on the preloading spring 18, leans on preloading spring 18 pretensions between steel ball 17 and the cam pack; Be provided with three oil outlet one-way valves 11 and three in line check valves 16 in the check valve body 14.
Cam pack comprises cam 5, axial needle bearing 6, deep groove ball bearing 7, cam swash plate 8, cam swash plate stationary axle 9, axial needle thrust bearing 10 and and needle bearing 22.Cam swash plate stationary axle 9 links to each other with electric machine main shaft by coupling, between cam swash plate 8 and the cam swash plate stationary axle 9 needle bearing 22 is installed, cam swash plate stationary axle 9 and needle bearing 22 are fixed in cam fixed base 4, and cam swash plate stationary axle 9 is installed on the cam 5 by deep groove ball bearing 7; Cam pack is fixed on the cam fixed base 4 by steel ball 17 and preloading spring 18.
Working principle: motor a drives low pressure pump runner 2 and rotates, one side of low pressure pump roller 3 and low pressure pump runner 2 internal recessings is adjacent to airtight, the inner chamber of low pressure pump roller 3 and the low pressure pump pump housing 1 is airtight under the effect of centrifugal force, because there is off-centre at the center of low pressure pump runner 2 with respect to the center of the inner chamber of the low pressure pump pump housing 1, therefore low pressure pump roller 3 when rotating also in longitudinal movement, produce thus volume-variation, so that in-oil cylinder hydraulic oil is inhaled into low-pressure cavity by the filter screen oil pipe, discharge the hydraulic oil with certain pressure by high-pressure oil pipe 19 and enter oil pump valve block assembly, the less pressure of initial stage of operation load is also smaller, steel ball 15 is opened, and oil circuit directly enters pressure release and pressure regulation integrated package from the oil outlet 20 of oil pump valve block assembly.
Rising along with load, pressure also increases, this moment, hydraulic oil entered check valve body 14 by in line check valve 16, hydraulic oil by pressure plunger 13 jack-up of high-pressure service pump, plunger compresses cam swash plate 8 thereupon, eliminate the gap between cam swash plate 8 and the cam 5, frictional force between cam swash plate 8 and the cam 5 increases along with the increase of pressure, because cam 5 rotates under the drive of motor a, cam swash plate 8 then by and cam 5 between frictional force under the drive of cam 5, rotate, plunger 13 axially moves under the pressure-acting of cam swash plate 8, produce high pressure oil and directly enter the oil circuit of steel ball 15 dorsal parts of oil pump valve block assembly by oil outlet one-way valve 11, enter pressure release and pressure regulation integrated package from the oil outlet 20 of oil pump valve block assembly.
Because pressure raises, the pressure of steel ball 15 dorsal parts is in air-tight state greater than the pressure of the hydraulic oil that comes from low pressure pump stream at this moment, the low pressure oil way sealing.A part of low pressure oil that low pressure pump produces enters oil cylinder by relief valve 23 from the return opening 21 of being located at oil pump valve block assembly, and a part enters the high-pressure service pump pump housing 12 by the generation high pressure oil that boosts.
In addition, need to prove, the specific embodiment described in this specification, the shape of its parts and components, institute's title of being named etc. can be different.Allly conceive equivalence or the simple change that described structure, feature and principle are done according to the utility model patent, be included in the protection domain of the utility model patent.The utility model person of ordinary skill in the field can make various modifications or replenishes or adopt similar mode to substitute described specific embodiment; only otherwise depart from structure of the present utility model or surmount this scope as defined in the claims, all should belong to protection domain of the present utility model.
Claims (3)
1. an electric hydraulic pump comprises motor and the pump housing, it is characterized in that: the described pump housing comprises fuel sucking pipe, low pressure pump assembly, high pressure pump assembly, oil pump valve block assembly and cam pack; One end of described fuel sucking pipe has filter screen, and filter screen is immersed in the in-oil cylinder hydraulic oil, and the other end of fuel sucking pipe and low pressure pump assembly are communicated with; Described low pressure pump assembly comprises the low pressure pump pump housing, low pressure pump runner, low pressure pump roller and cam fixed base; High-pressure oil pipe is communicated with low pressure pump assembly and oil pump valve block assembly; Described high pressure pump assembly comprises the high-pressure service pump pump housing and check valve body, the high-pressure service pump pump housing is provided with three plungers and a preloading spring, plunger evenly is arranged in the high pressure valve body, and preloading spring is arranged in the spring base hole at high pressure valve body center, is placed with steel ball on the preloading spring; Be provided with three in line check valves and three oil outlet one-way valves in the described check valve body; Described cam pack comprises cam, axial needle bearing, deep groove ball bearing, cam swash plate, cam swash plate stationary axle, axial needle thrust bearing and needle bearing.
2. electric hydraulic pump according to claim 1, it is characterized in that: the low pressure pump pump housing in the described low pressure pump assembly is fixed on above the cam fixed base, and the low pressure pump runner links to each other with electric machine main shaft by keyway, and the low pressure pump roller is distributed in the low pressure pump runner.
3. electric hydraulic pump according to claim 1, it is characterized in that: the cam swash plate stationary axle in the described cam pack links to each other with electric machine main shaft by coupling, between cam swash plate and the cam swash plate stationary axle needle bearing is installed, cam swash plate stationary axle and needle bearing are fixed in the cam fixed base, and cam swash plate stationary axle is installed on the cam by deep groove ball bearing; Cam pack is fixed on the cam fixed base by steel ball and preloading spring.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201220392710XU CN202746179U (en) | 2012-08-09 | 2012-08-09 | Electric hydraulic pump |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201220392710XU CN202746179U (en) | 2012-08-09 | 2012-08-09 | Electric hydraulic pump |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202746179U true CN202746179U (en) | 2013-02-20 |
Family
ID=47705580
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201220392710XU Expired - Lifetime CN202746179U (en) | 2012-08-09 | 2012-08-09 | Electric hydraulic pump |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202746179U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103147952A (en) * | 2013-03-19 | 2013-06-12 | 佛山华液动力科技有限公司 | Ultrahigh pressure axial plunger oil pump |
-
2012
- 2012-08-09 CN CN201220392710XU patent/CN202746179U/en not_active Expired - Lifetime
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103147952A (en) * | 2013-03-19 | 2013-06-12 | 佛山华液动力科技有限公司 | Ultrahigh pressure axial plunger oil pump |
| CN103147952B (en) * | 2013-03-19 | 2016-04-20 | 广东华液动力科技有限公司 | A kind of ultrahigh pressure axial plunger oil pump |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term |
Granted publication date: 20130220 |
|
| CX01 | Expiry of patent term |