CN204646652U - A kind of volume adjustable hydraulic pump - Google Patents
A kind of volume adjustable hydraulic pump Download PDFInfo
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- CN204646652U CN204646652U CN201520340157.9U CN201520340157U CN204646652U CN 204646652 U CN204646652 U CN 204646652U CN 201520340157 U CN201520340157 U CN 201520340157U CN 204646652 U CN204646652 U CN 204646652U
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Abstract
The utility model provides a kind of volume adjustable hydraulic pump, belongs to oil hydraulic pump technical field.It solve existing efficiency of hydraulic pump low, the problem that discharge capacity is little.This volume adjustable hydraulic pump comprises the pump housing, rotor and rotating shaft, pump body is provided with work chamber, two of work chamber is equipped with the side plate be connected with the pump housing, the periphery of rotor is spaced apart is provided with multiple radial groove, roller is equipped with in each groove, shoe cream room is formed between each roller and the bottom of respective slot, shoe cream room is at least divided into a volume enlargement district and at least one smaller volume district according to volume-variation, side plate offers oil sucting cavity and oil-discharging cavity, oil sucting cavity is communicated with the shoe cream room in volume enlargement district, oil-discharging cavity is then communicated with the shoe cream room in smaller volume district, described oil hydraulic pump also includes displacement adjusting mechanism.This volume adjustable hydraulic pump is gone rancid by the shoe cream room between roller and groove, and length and the rotor radius of shoe cream room maximum volume are close, and can go rancid in most of space of rotor, oil drain quantity is large.
Description
Technical field
The utility model belongs to oil hydraulic pump technical field, relates to a kind of volume adjustable hydraulic pump.
Background technique
Oil hydraulic pump is the dynamical element of hydraulic system, is by motor or motoring, from hydraulic oil container, sucks fluid, and mineralization pressure oil is discharged, and delivers to a kind of element of executive component.Oil hydraulic pump is divided into gear pump, plunger pump, vane pump and screw pump by structure, wherein vane pump because uniform flow, smooth running, noise are little, working pressure and volumetric efficiency all higher and be widely used.
In prior art, vane pump comprises rotor, stator, blade and oil distribution casing, and wherein, blade is be movably connected in epitrochanterian in the mode of decile on rotor, can freely radially slide, and rotor is arranged in the stator.In the rotation process of rotor, due to the effect of inertial force, blade leans against the inner curve of stator on the surface all the time, between adjacent blades and left and right oil distribution casing, form working volumes, because stator inner surface has semi major axis circular arc and short radius circular arc to form.During blade rotary, blade outer end againsts circular motion, the volume of working volumes is constantly changed, carries out oil suction and oil extraction.
The vane pump of this form is owing to being by a Line of contact sealing between blade and stator inner curve surface, therefore sealability is poor, delivery pressure is lower, when adding rotation, blade and stator produce very large friction, cause Whole Equipment quick abrasion, life-span is short, and obviously, efficiency is relatively on the low side in oil heating.In addition, in order to ensure that blade safety can pass in and out in rotor during rotation, rotor must have suitable diameter, and the discharge capacity that is bound to like this is less, and the thickness comparatively book of blade, must make the rigidity of pump inadequate.
Model utility content
The purpose of this utility model is for the problems referred to above existing for existing oil hydraulic pump, the advantage of comprehensive vane pump and plunger pump, and proposes a kind of volume adjustable hydraulic pump that can facilitate adjust flux.
The purpose of this utility model realizes by following technical proposal:
A kind of volume adjustable hydraulic pump, comprise the pump housing, rotor and rotating shaft, pump body is provided with work chamber, rotor is cylindricly be arranged in work chamber, two of work chamber is equipped with the side plate be connected with the pump housing, above-mentioned rotating shaft stretches in work chamber through one of them side plate and is connected with the rotor coaxial heart, it is characterized in that, the periphery of described rotor is spaced apart is provided with multiple radial groove, roller is equipped with in each groove, described roller can move back and forth along rotor radial in respective slot, shoe cream room is formed between each roller and the bottom of respective slot, when described rotating shaft rotor driven rotates, the volume size undulate change of each shoe cream room, above-mentioned shoe cream room is at least divided into a volume enlargement district and at least one smaller volume district according to volume-variation, volume enlargement district and smaller volume district are arranged alternately, above-mentioned side plate offers oil sucting cavity and oil-discharging cavity, wherein oil sucting cavity is communicated with the shoe cream room in volume enlargement district, oil-discharging cavity is then communicated with the shoe cream room in smaller volume district, the outer side surface of described side plate is also provided with the inlet port and oil drain out that are communicated with oil-discharging cavity with oil sucting cavity respectively, described oil hydraulic pump also includes displacement adjusting mechanism.
When rotating shaft rotor driven rotates, under centrifugal action, roller moves outside rotor, and the inner ring wall on inner ring wall outer end being abutted in work chamber and along work chamber rolls.By the eccentric setting of rotor, or by the inner ring wall of work chamber with an anon-normal circular design, when making each roller move to diverse location, to stretch out the length of groove inconsistent, change the volume-variation of its shoe cream room with this.Volume enlargement district and the shoe cream room corresponding to smaller volume district are not fixed, rotating shaft rotor driven rotates, when the volume of shoe cream room becomes large, this shoe cream room then belongs to volume enlargement district, and now this shoe cream room is communicated with oil sucting cavity, fluid enters in this shoe cream room by inlet port and oil sucting cavity, and along with rotor rotation, when the volume of this shoe cream room diminishes, now it belongs to smaller volume district, the fluid of its inside is extruded in the oil-discharging cavity of connection, and is discharged by oil drain out.
In above-mentioned a kind of volume adjustable hydraulic pump, described rotating shaft is provided with universal joint in the joint with rotor.Rotating shaft rotor driven can do the wallowing motion of several angle while rotating, make to there is certain flying height between rotor and pump housing work chamber inwall, and produce oil film.The required precision of rotor and rotating shaft can be reduced in addition, be convenient to processing.
In above-mentioned a kind of volume adjustable hydraulic pump, described universal joint is square column type, and its each side is provided with arc cylinder, and the central axis corresponding to arc cylinder is in rotating shaft.
In above-mentioned a kind of volume adjustable hydraulic pump, two arc column faces on described universal joint symmetry plane are symmetrical arranged and are positioned on same cylindrical cylinder.
In above-mentioned a kind of volume adjustable hydraulic pump, by arc round-corner transition between described adjacent two arc cylinders.
In above-mentioned a kind of volume adjustable hydraulic pump, described roller is cylindric.
In above-mentioned a kind of volume adjustable hydraulic pump, described inlet port, oil drain out, oil sucting cavity and oil-discharging cavity are positioned on same side plate.
In above-mentioned a kind of volume adjustable hydraulic pump, described oil sucting cavity and oil-discharging cavity are all in circular arc.
In above-mentioned a kind of volume adjustable hydraulic pump, the degree of depth of above-mentioned each groove is all identical with the size of each roller.
In above-mentioned a kind of volume adjustable hydraulic pump, described displacement adjusting mechanism comprises the regulating ring of ring, regulating ring to be placed in work chamber and by above-mentioned rotor institute around, the concentricity controlling mechanism for regulating regulating ring and rotor concentricity is also provided with between described regulating ring and the pump housing, when above-mentioned rotor rotates, each roller abuts in regulating ring interior sidewall surface and rolls under centrifugal action.
The concentricity of regulating ring and rotor is higher, and rotor is in rotary course, and the volume-variation of each shoe cream room is also less, and the oil mass that oil hydraulic pump exports is less, and oil pressure but remains unchanged.Otherwise the degree of eccentricity of rotor and regulating ring is higher, in rotary course, the volume-variation of each shoe cream room is larger, and the oil mass exported is larger, and oil pressure keeps a stationary value.
In above-mentioned a kind of volume adjustable hydraulic pump, described concentricity controlling mechanism comprises plunger and adjustment actuating mechanism, the pump housing offers the adjustment hole be communicated with above-mentioned work chamber, plunger is arranged in adjustment hole, one end of plunger can stretch out from adjustment hole and pushing tow to the outer wall of regulating ring, the other end of plunger can make plunger move back and forth along adjustment hole under the driving of adjustment actuating mechanism.Adjustment actuating mechanism can control plunger and move back and forth along adjustment hole, and plunger is inwardly moved, and promotes regulating ring translation, reduces the concentricity of rotor and regulating ring, and when oil pressure is definite value, oil transportation amount raises.Otherwise plunger return, roller acts on regulating ring inwall under centrifugal action, promotes regulating ring return, and rotor and regulating ring concentricity improve.
In above-mentioned a kind of volume adjustable hydraulic pump, described adjustment actuating mechanism comprises adjustable lever and operating device, the pump housing offers pressure regulating cavity, adjustable lever is arranged in pressure regulating cavity, the pressure regulation oil pocket be communicated with above-mentioned adjustment hole is formed between adjustable lever with pressure regulating cavity inwall, described pressure regulation oil pocket is communicated with work chamber by leakage of oil passage, and operating device drives adjustable lever in pressure regulating cavity, move the volume size changing pressure regulation oil pocket.Be full of fluid in pressure regulation oil pocket, leakage of oil passage and adjustment hole, when pressure regulation oil pocket volume diminishes, oil pressure becomes large, promotes plunger and moves to regulating ring direction.
In above-mentioned a kind of volume adjustable hydraulic pump, described operating device comprises adjusting knob, and adjusting knob is threaded with pressure regulating cavity, is provided with Regulation spring between the inner of adjusting knob and adjustable lever.
In above-mentioned a kind of volume adjustable hydraulic pump, described operating device comprises adjusting knob, and adjusting knob is threaded with pressure regulating cavity and the inner and adjustable lever are connected.This programme is similar to screw structure, drives rotation edge, adjustable lever limit regulator hole to move back and forth.
In above-mentioned a kind of volume adjustable hydraulic pump, described pressure regulating cavity offers the drain tap that can be communicated with pressure regulation oil pocket, drain tap place is provided with oil drain switch.
In above-mentioned a kind of volume adjustable hydraulic pump, the inwall of described pressure regulation oil pocket is provided with boss.Make the part forming at least two place's different pore sizes in pressure regulation oil pocket, when such adjustable lever moves along regulator hole, the volume size of pressure regulation oil pocket can be changed.
In above-mentioned a kind of volume adjustable hydraulic pump, in described adjustment hole, be provided with holddown spring.Holddown spring acts in plunger, provides thrust.
Compared with prior art, this volume adjustable hydraulic pump energy Displacement Regulation, adjustment operation is simple and convenient, and oil pressure is guaranteed.Adopt universal rotating shaft rotor driven to rotate, improve rotation efficiency.Moreover in rotor rotation process, roller rolls along the inwall of work chamber, reduce friction, improve service life of equipment, improve usefulness.In addition, this volume adjustable hydraulic pump is gone rancid by the shoe cream room between roller and groove, and length and the rotor radius of shoe cream room maximum volume are close, and can go rancid in most of space of rotor, oil drain quantity is large.The volume-variation element (as blade) of the structure of roller and other pump has more rigidity, the temperature rise of hydraulic oil is reduced, noise reduction.
Accompanying drawing explanation
Fig. 1 is sectional structure schematic diagram of the present utility model.
Fig. 2 is internal structure schematic diagram of the present utility model.
Fig. 3 is the structural representation that rotor coordinates with rotating shaft.
Fig. 4 is the plan view of Fig. 3.
Fig. 5 is the lateral plate structure schematic diagram being provided with oil sucting cavity and oil-discharging cavity in embodiment 1.
In figure, 1, the pump housing; 2, rotor; 3, rotating shaft; 4, regulating ring; 5, work chamber; 6, side plate; 7, bearing; 8, groove; 9, roller; 10, shoe cream room; 11, oil sucting cavity; 12, oil-discharging cavity; 13, inlet port; 14, oil drain out; 15, adjustment hole; 16, plunger; 17, pressure regulating cavity; 18, adjustable lever; 19, slide block; 20, pressure regulation oil pocket; 21, leakage of oil passage; 22, boss; 23, adjusting knob; 24, Regulation spring; 25, oil drain switch; 26, drain tap; 27, universal joint; 28, arc cylinder; 29, arc fillet.
Embodiment
Be below specific embodiment of the utility model and by reference to the accompanying drawings, the technical solution of the utility model is further described, but the utility model be not limited to these embodiments.
Embodiment 1
As depicted in figs. 1 and 2, this volume adjustable hydraulic pump comprises the pump housing 1, rotor 2, rotating shaft 3 and regulating ring 4, the pump housing 1 inside is provided with the work chamber 5 of running through up and down, rotor 2 is arranged in work chamber 5 in cylindric, two up and down of work chamber 5 is equipped with the side plate 6 be connected with the pump housing 1, the side plate 6 that upper end is passed in above-mentioned rotating shaft 3 stretches in work chamber 5 and is connected with rotor 2 concentric, is connected between rotating shaft 3 with biside plate 6 by bearing 7.As shown in Figure 4, the periphery of rotor 2 is spaced apart is provided with multiple radial groove 8, be equipped with columned roller 9 in each groove 8, described roller 9 can move back and forth along rotor 2 radial direction in respective slot 8, forms shoe cream room 10 between each roller 9 and the bottom of respective slot 8.
The regulating ring 4 of ring to be placed in work chamber 5 and by above-mentioned rotor 2 institute around, rotor 2 is relative to the center of circle eccentric setting of regulating ring 4, therefore, when rotating shaft 3 rotor driven 2 rotates, each roller 9 rolls to rotor 2 movement outside and along the interior sidewall surface of regulating ring 4 under centrifugal action.During this period, because rotor 2 is relative to regulating ring 4 eccentric setting, therefore rotor 2 is in rotary course, and the length that each roller 9 stretches out groove 8 part continues change, the volume size undulate change of each shoe cream room 10.For this reason, above-mentioned shoe cream room 10 is at least divided into a volume enlargement district and at least one smaller volume district according to volume-variation by us, in the present embodiment, only has a volume enlargement district and a smaller volume district.As shown in Figure 2, the shoe cream room 10 of illustrated left-half is smaller volume district, and the shoe cream room 10 of right half part divides volume enlargement district into.When rotor 2 turns clockwise by diagram, in smaller volume district, the volume of shoe cream room 10 diminishes gradually, and in volume enlargement district, the volume of shoe cream room 10 becomes large gradually.
As shown in Figure 5, the side plate 6 of the pump housing 1 lower end offers oil sucting cavity 11 and oil-discharging cavity 12, oil sucting cavity 11 and oil-discharging cavity 12 are all in circular arc, both are symmetrical arranged in opposite directions, and on this side plate 6, be also provided with the inlet port 13 and oil drain out 14 that are communicated with oil-discharging cavity 12 with oil sucting cavity 11 respectively simultaneously, wherein oil sucting cavity 11 is communicated with the shoe cream room 10 in above-mentioned volume enlargement district, and oil-discharging cavity 12 is then communicated with the shoe cream room 10 in smaller volume district.
When rotating shaft 3 rotor driven 2 rotates, under centrifugal action, roller 9 moves outside rotor 2, and the internal face on internal face outer end being abutted in regulating ring 4 and along regulating ring 4 rolls.Because rotor 2 is relative to regulating ring 4 eccentric setting, when therefore each roller 9 moves to diverse location, to stretch out the length of groove 8 inconsistent, change the volume-variation of its shoe cream room 10 with this.When shoe cream room 10 volume becomes large, it is just positioned at volume enlargement district, by inlet port 13 and oil sucting cavity 11, fluid is sucked in this shoe cream room 10, and rotate along with rotor 2, when the volume of this shoe cream room 10 diminishes, now its its moved to smaller volume district, the fluid of its inside is extruded in the oil-discharging cavity 12 of connection, and is discharged by oil drain out 14.
Regulating ring 4 energy activity adjustment in the utility model, to reach the object of Displacement Regulation.For this reason, the utility model also has the concentricity controlling mechanism regulating rotor 2 and regulating ring 4 concentricity, this controlling mechanism comprises plunger 16 and adjustment actuating mechanism, the pump housing 1 offers the adjustment hole 15 be communicated with above-mentioned work chamber 5, plunger 16 is arranged in adjustment hole 15, one end of plunger 16 can stretch out from adjustment hole 15 and pushing tow to the outer wall of regulating ring 4, the other end of plunger 16 can make plunger 16 move back and forth along adjustment hole 15 under the driving of adjustment actuating mechanism.Adjustment actuating mechanism comprises adjustable lever 18 and operating device, the pump housing 1 offers pressure regulating cavity 17, adjustable lever 18 is arranged in pressure regulating cavity 17, the two ends of adjustable lever 18 are provided with the larger slide block of diameter 19, make to form the pressure regulation oil pocket 20 be communicated with above-mentioned adjustment hole 15 between the shank portion of adjustable lever 18 with pressure regulating cavity 17 inwall, described pressure regulation oil pocket 20 is communicated with work chamber 5 by leakage of oil passage 21.The inwall of pressure regulation oil pocket 20 is provided with step-like boss 22, make the part forming at least two place's different pore sizes in pressure regulation oil pocket 20, such operating device just can change the volume size of pressure regulation oil pocket 20 when driving adjustable lever 18 to move in pressure regulating cavity 17, fluid is full of in pressure regulation oil pocket 20, leakage of oil passage 21 and adjustment hole 15, when pressure regulation oil pocket 20 volume diminishes, promote plunger 16 and move to regulating ring 4 direction.In the present embodiment, operating device comprises adjusting knob 23, and adjusting knob 23 is threaded with pressure regulating cavity 17, is provided with Regulation spring 24 between the inner of adjusting knob 23 and adjustable lever 18.Pressure regulating cavity 17 offers drain tap 26 relative to the other end of adjusting knob 23, and drain tap 26 place is provided with oil drain switch 25.
The concentricity of regulating ring 4 and rotor 2 is higher, and rotor 2 is in rotary course, and the volume-variation of each shoe cream room 10 is also less, and the oil mass that oil hydraulic pump exports is less.Otherwise rotor 2 is higher with the degree of eccentricity of regulating ring 4, and in rotary course, the volume-variation of each shoe cream room 10 is larger, and the oil mass exported is larger.
During adjustment, rotate adjusting knob 23, adjusting knob 23 inwardly moves along pressure regulating cavity 17, adjustable lever 18 (towards right side shown in Fig. 2) motion is promoted by Regulation spring 24, inwall due to pressure regulation oil pocket 20 is provided with step-like boss 22, the volume of pressure regulation oil pocket 20 diminishes, in it, oil pressure raises, and act in the plunger 16 in adjustment hole 15, make the inner of plunger 16 push up regulating ring 4 outer wall and promote regulating ring 4 translation () shown in Fig. 2 downwards, the degree of eccentricity of regulating ring 4 and rotor 2 uprises, and the oil mass of output becomes large.When power is unloaded in adjusting knob 23 reversion, roller 9 acts on regulating ring 4 inwall under centrifugal action, promotes regulating ring 4 and plunger 16 return, and the concentricity of rotor 2 and regulating ring 4 improves.
As shown in Figure 3 and Figure 4, rotating shaft 3 is provided with universal joint 27 in the joint with rotor 2, universal joint 27 is in square column type, its each side is provided with arc cylinder 28, by arc fillet 29 transition between adjacent two arc cylinders 28, central axis corresponding to arc cylinder 28 is in rotating shaft 3, two arc cylinders 28 on universal joint 27 symmetry plane are symmetrical arranged and are positioned on same cylindrical cylinder, and rotating shaft 3 rotor driven 2 can make rotor 2 do a-b direction tilted upward while rotating swings.
Embodiment 2
In embodiment 1, inlet port 13, oil drain out 14, oil sucting cavity 11 and oil-discharging cavity 12 are all positioned on same side plate 6, and therefore fluid sucks from oil sucting cavity 11 direction that shoe cream room 10 (rising) and fluid clamp-ons oil-discharging cavity 12 (decline) from shoe cream room 10 is contrary.
In the present embodiment, oil sucting cavity 11 and oil-discharging cavity 12 points are located on two side plates 6 by we, inlet port 13 and oil drain out 14 also correspondence are arranged on corresponding side plate 6, then fluid sucks from oil sucting cavity 11 direction that shoe cream room 10 (rising) and fluid clamp-ons oil-discharging cavity 12 (rising) from shoe cream room 10 is consistent.
Should be appreciated that, in claims of the present utility model, specification, all " comprising ... " is all interpreted as open implication, and namely its implication is equal to " at least containing ... ", and should not be construed as enclosed implication, namely its implication should not be construed " only comprising ... ".
Specific embodiment described herein is only to the explanation for example of the utility model spirit.The utility model person of ordinary skill in the field can make various amendment or supplements or adopt similar mode to substitute to described specific embodiment, but can't depart from spirit of the present utility model or surmount the scope that appended claims defines.
Claims (10)
1. a volume adjustable hydraulic pump, comprise the pump housing (1), rotor (2) and rotating shaft (3), the pump housing (1) inside is provided with work chamber (5), rotor (2) is arranged in work chamber (5) in cylindric, two of work chamber (5) is equipped with the side plate (6) be connected with the pump housing (1), above-mentioned rotating shaft (3) stretches in work chamber (5) through one of them side plate (6) and is connected with rotor (2) concentric, it is characterized in that, the periphery of described rotor (2) is spaced apart is provided with multiple radial groove (8), roller (9) is equipped with in each groove (8), described roller (9) can move back and forth along rotor (2) radial direction in respective slot (8), shoe cream room (10) is formed between the bottom of each roller (9) and respective slot (8), when described rotating shaft (3) rotor driven (2) rotates, the volume size undulate change of each shoe cream room (10), above-mentioned shoe cream room (10) is at least divided into a volume enlargement district and at least one smaller volume district according to volume-variation, volume enlargement district and smaller volume district are arranged alternately, above-mentioned side plate (6) offers oil sucting cavity (11) and oil-discharging cavity (12), wherein oil sucting cavity (11) is communicated with the shoe cream room (10) in volume enlargement district, oil-discharging cavity (12) is then communicated with the shoe cream room (10) in smaller volume district, the outer side surface of described side plate (6) is also provided with the inlet port (13) and oil drain out (14) that are communicated with oil-discharging cavity (12) with oil sucting cavity (11) respectively, described oil hydraulic pump also includes displacement adjusting mechanism.
2. a kind of volume adjustable hydraulic pump according to claim 1, it is characterized in that, described displacement adjusting mechanism comprises the regulating ring (4) of ring, regulating ring (4) to be placed in work chamber (5) and by above-mentioned rotor (2) institute around, the concentricity controlling mechanism for regulating regulating ring (4) and rotor (2) concentricity is also provided with between described regulating ring (4) and the pump housing (1), when above-mentioned rotor (2) rotates, each roller (9) abuts in regulating ring (4) interior sidewall surface and rolls under centrifugal action.
3. a kind of volume adjustable hydraulic pump according to claim 2, it is characterized in that, described concentricity controlling mechanism comprises plunger (16) and adjustment actuating mechanism, the pump housing (1) offers the adjustment hole (15) be communicated with above-mentioned work chamber (5), plunger (16) is arranged in adjustment hole (15), one end of plunger (16) can stretch out from adjustment hole (15) and pushing tow to the outer wall of regulating ring (4), the other end of plunger (16) can make plunger (16) move back and forth along adjustment hole (15) under the driving of adjustment actuating mechanism.
4. a kind of volume adjustable hydraulic pump according to claim 3, it is characterized in that, described adjustment actuating mechanism comprises adjustable lever (18) and operating device, the pump housing (1) offers pressure regulating cavity (17), adjustable lever (18) is arranged in pressure regulating cavity (17), the pressure regulation oil pocket (20) be communicated with above-mentioned adjustment hole (15) is formed between adjustable lever (18) with pressure regulating cavity (17) inwall, described pressure regulation oil pocket (20) is communicated with work chamber (5) by leakage of oil passage (21), operating device drives adjustable lever (18) to move with the volume size changing pressure regulation oil pocket (20) in pressure regulating cavity (17).
5. a kind of volume adjustable hydraulic pump according to claim 4, it is characterized in that, described operating device comprises adjusting knob (23), adjusting knob (23) is threaded with pressure regulating cavity (17), is provided with Regulation spring (24) between the inner of adjusting knob (23) and adjustable lever (18).
6. a kind of volume adjustable hydraulic pump according to claim 4 or 5, is characterized in that, the inwall of described pressure regulation oil pocket (20) is provided with boss (22).
7. a kind of volume adjustable hydraulic pump according to claim 1-5 any one, is characterized in that, described rotating shaft (3) is provided with universal joint (27) in the joint with rotor (2).
8. a kind of volume adjustable hydraulic pump according to claim 7, it is characterized in that, described universal joint (27) is in square column type, and its each side is provided with arc cylinder (28), and the central axis corresponding to arc cylinder (28) is in rotating shaft 3.
9. a kind of volume adjustable hydraulic pump according to claim 1-5 any one, it is characterized in that, described inlet port (13), oil drain out (14), oil sucting cavity (11) and oil-discharging cavity (12) are positioned on same side plate (6).
10. a kind of volume adjustable hydraulic pump according to claim 9, is characterized in that, described oil sucting cavity (11) and oil-discharging cavity (12) are all in circular arc.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520340157.9U CN204646652U (en) | 2015-05-24 | 2015-05-24 | A kind of volume adjustable hydraulic pump |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520340157.9U CN204646652U (en) | 2015-05-24 | 2015-05-24 | A kind of volume adjustable hydraulic pump |
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| Publication Number | Publication Date |
|---|---|
| CN204646652U true CN204646652U (en) | 2015-09-16 |
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ID=54099413
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520340157.9U Expired - Fee Related CN204646652U (en) | 2015-05-24 | 2015-05-24 | A kind of volume adjustable hydraulic pump |
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| CN (1) | CN204646652U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104832427A (en) * | 2015-05-24 | 2015-08-12 | 浙江爱贝尔液压设备有限公司 | Variable hydraulic pump |
| CN117619008A (en) * | 2024-01-26 | 2024-03-01 | 西安康诺化工有限公司 | Chemical product filter and filtering method thereof |
-
2015
- 2015-05-24 CN CN201520340157.9U patent/CN204646652U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104832427A (en) * | 2015-05-24 | 2015-08-12 | 浙江爱贝尔液压设备有限公司 | Variable hydraulic pump |
| CN117619008A (en) * | 2024-01-26 | 2024-03-01 | 西安康诺化工有限公司 | Chemical product filter and filtering method thereof |
| CN117619008B (en) * | 2024-01-26 | 2024-04-23 | 西安康诺化工有限公司 | Chemical product filter and filtering method thereof |
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| Date | Code | Title | Description |
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| 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: 20150916 Termination date: 20170524 |