CN107061261B - A kind of gear pump with variable capacity - Google Patents
A kind of gear pump with variable capacity Download PDFInfo
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- CN107061261B CN107061261B CN201710298105.3A CN201710298105A CN107061261B CN 107061261 B CN107061261 B CN 107061261B CN 201710298105 A CN201710298105 A CN 201710298105A CN 107061261 B CN107061261 B CN 107061261B
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- driven
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- 238000007789 sealing Methods 0.000 claims description 6
- 230000002146 bilateral effect Effects 0.000 claims description 3
- 230000000694 effects Effects 0.000 description 3
- 238000010586 diagram Methods 0.000 description 2
- 239000012530 fluid Substances 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 230000009471 action Effects 0.000 description 1
- 239000002360 explosive Substances 0.000 description 1
- 238000005192 partition Methods 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 238000005096 rolling process Methods 0.000 description 1
Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04C—ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT PUMPS
- F04C2/00—Rotary-piston machines or pumps
- F04C2/08—Rotary-piston machines or pumps of intermeshing-engagement type, i.e. with engagement of co-operating members similar to that of toothed gearing
- F04C2/12—Rotary-piston machines or pumps of intermeshing-engagement type, i.e. with engagement of co-operating members similar to that of toothed gearing of other than internal-axis type
- F04C2/14—Rotary-piston machines or pumps of intermeshing-engagement type, i.e. with engagement of co-operating members similar to that of toothed gearing of other than internal-axis type with toothed rotary pistons
- F04C2/18—Rotary-piston machines or pumps of intermeshing-engagement type, i.e. with engagement of co-operating members similar to that of toothed gearing of other than internal-axis type with toothed rotary pistons with similar tooth forms
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04C—ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT PUMPS
- F04C14/00—Control of, monitoring of, or safety arrangements for, machines, pumps or pumping installations
- F04C14/18—Control of, monitoring of, or safety arrangements for, machines, pumps or pumping installations characterised by varying the volume of the working chamber
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Rotary Pumps (AREA)
Abstract
The present invention discloses a kind of gear pump with variable capacity, including drive end bearing bracket and rear end cap, the quantitative pump housing and the variable pump housing, quantitative driving shaft and quantitative driven shaft, quantitative driving gear and quantitative driven gear, variable driving shaft and variable driven shaft etc., drive end bearing bracket is mounted on quantitative pump housing side, the quantitative pump housing other side is equipped with intermediate bulkhead, the intermediate bulkhead other side is equipped with the variable pump housing, and the variable pump housing other side is equipped with rear end cap；Variable Control end the upper and lower position of variable piston controlled by external force come change the center of variable driven gear and variable driving gear away from.Traditional quantitative gear pump is be combined with each other by the way that upper cydariform tooth shaft and lower cydariform tooth shaft is rationally arranged by the present invention with gear pump with variable capacity, while realizing that gear pump is quantitative and two kinds of functions of variable；The present invention is by setting Variable Control end, and control variable driven gear and the intermeshing center of variable driving gear are away from realizing the purpose of gear pump variable, the present invention innovates the prior art from principle.
Description
Technical field
The present invention relates to hydraulic machinery field, in particular to a kind of gear pump with variable capacity.
Background technique
Gear pump is a kind of equipment that hydraulic machinery field is commonly used, and wherein gear pump with variable capacity is many special occasions again
The lower equipment for needing to use, gear pump with variable capacity are broadly divided into internal messing gear pump with variable capacity and two kinds of external toothing gear pump with variable capacity, and
The cardinal principle of existing two kinds of gear pump with variable capacity is by changing the length of action reality between driving gear and driven gear
The purpose of existing variable, is based on this, and the present invention is innovated from the working principle of gear pump with variable capacity, former using a kind of new variable
Reason, while variable and quantitative two kinds of functions being be combined with each other, to adapt to increasingly complex working environment.
Summary of the invention
In view of the above-mentioned problems, the present invention provides a kind of gear pump with variable capacity, by by quantitative and two kinds of function of variable of gear pump
Can be combined with each other, at the same using change gear centre away from principle realize variable.
Technical solution used in the present invention is: a kind of gear pump with variable capacity, including drive end bearing bracket and rear end cap, the quantitative pump housing and
The variable pump housing, quantitative driving shaft and quantitative driven shaft, quantitative driving gear and quantitative driven gear, variable driving shaft and variable from
Moving axis, variable driving gear and variable driven gear, intermediate bulkhead, upper cydariform tooth shaft and lower cydariform tooth shaft, it is characterised in that: institute
The drive end bearing bracket stated is mounted on quantitative pump housing side by screw, and the quantitative pump housing other side is equipped with intermediate bulkhead, the centre
The partition other side is equipped with the variable pump housing, and the variable pump housing other side is equipped with rear end cap by screw；Described quantifies
Driving shaft is located at quantitative pump housing top position, and quantitative driving shaft one end is rotatably installed in drive end bearing bracket top by needle bearing, separately
One end is rotatably installed in intermediate bulkhead side by needle bearing, is coaxially installed with quantitative driving gear on quantitative driving shaft；Institute
The quantitative driven shaft stated is located at quantitative pump housing lower position, and quantitative driven shaft one end is rotatably installed in drive end bearing bracket by needle bearing
Lower part, the other end are rotatably installed in intermediate bulkhead side by needle bearing, are coaxially installed on quantitative driven shaft quantitatively driven
Gear, and be intermeshed with quantitative driving gear；The two sides of quantitative driving gear and quantitative driven gear are respectively arranged with one
Quantitative platen；Quantitative driving shaft and quantitatively driven shaft are respectively arranged with internal tooth close to one end of intermediate bulkhead；The variable master
Moving axis is located at variable pump housing top position, and variable driving shaft one end is rotatably installed in intermediate bulkhead side by needle bearing, separately
One end is rotatably installed on rear end cap by needle bearing；Variable driving shaft is provided circumferentially about eight active plates, eight actives
Plate is uniformly arranged in pairs on variable driving shaft circumference；The variable driving gear is provided centrally with through-hole, described logical
Hole is provided circumferentially about eight follower plates, and eight follower plates are uniformly arranged in pairs on through-hole circumference；Variable driving gear
It is rotatably installed on variable driving shaft, each group of follower plate is alternately distributed with each group of active plate；The external side lower part of variable pump is set
It is equipped with Variable Control end, is slided up and down inside the Variable Control end and variable piston is installed, the variable piston and change
Reset spring is provided between amount control terminal；Variable piston top is provided with variable bearing block, the variable driven shaft rotation
It is mounted in variable bearing block, variable driven gear, the variable driven gear and change is coaxially arranged on variable driven shaft
Measure driving gear intermeshing；Variable driving gear and variable driven gear two sides are respectively arranged with before variable after platen and variable
Platen；Variable driving shaft and variable driven shaft are respectively arranged with internal tooth close to one end of intermediate bulkhead；The upper cydariform tooth shaft
It is mounted on intermediate bulkhead top, the lower cydariform tooth shaft is mounted on intermediate bulkhead lower part, upper cydariform tooth shaft and lower cydariform tooth shaft
Both ends are coaxially arranged with barreled tooth flank respectively；The barreled tooth flank at upper cydariform tooth shaft both ends respectively with the internal tooth of quantitative driving shaft one end and change
Measure the internal tooth intermeshing of driving shaft one end；The barreled tooth flank at lower cydariform tooth shaft both ends respectively with the internal tooth of quantitative driven shaft one end and
The internal tooth of variable driven shaft one end is intermeshed.
Further, the quantitative pump housing two sides are respectively arranged with quantitative oil outlet and quantitative oil inlet, quantitative fuel-displaced
Mouthful gear outside high pressure area for engage outside with quantitative driving gear and quantitative driven gear is connected, quantitatively oil inlet with quantitatively
Driving gear is connected with the gear outside low pressure area in quantitative driven gear engagement outside；The variable pump housing two sides are set respectively
It is equipped with variable oil outlet and variable oil inlet, variable oil outlet engages the tooth in outside with variable driving gear and variable driven gear
Wheel outside high pressure area is connected, and variable oil inlet engages low on the outside of the gear in outside with variable driving gear and variable driven gear
Pressure area is connected.
Further, platen is bilateral symmetry after platen and variable before the variable, on variable driving gear
Region between two groups of active plates adjacent on variable driving shaft is divided on the inside of gear in higher-pressure region and gear by each group of follower plate
Side low-pressure area two parts；The side that platen is in contact with variable driving gear after platen and variable before variable be provided with higher-pressure region into
Oily channel, the other side are provided with low-pressure area oil discharge passage, and low-pressure area oil discharge passage end is provided with low-pressure area and goes out oil hole；Variable
Driving gear, which is located on the inside of gear, is provided with higher-pressure region oil inlet at high pressure zone position, the higher-pressure region oil inlet passage by with
Higher-pressure region oil inlet is connected, and gear outside high pressure area is connected with higher-pressure region on the inside of gear；Variable driving shaft is located at gear
Low-pressure area oil outlet is provided at the low pressure zone position of inside, low-pressure area oil outlet passes through platen and change before variable driving shaft and variable
Low-pressure area oil discharge passage before measuring on platen is connected, and finally gear outside low pressure area is connected with low-pressure area on the inside of gear.
Further, be provided with sealing blade between two active plates in each group of active plate, each group from
Sealing blade is provided between two follower plates in movable plate.
Further, axle envelope, the variable driven shaft and change are provided between the quantitative driving shaft and drive end bearing bracket
Needle bearing is provided between amount bearing block.
Since present invention employs above-mentioned technical proposals, the invention has the following advantages that (1) present invention is by being rationally arranged
Traditional quantitative gear pump be combined with each other with gear pump with variable capacity, while realizing gear pump by upper cydariform tooth shaft and lower cydariform tooth shaft
Quantitative and two kinds of functions of variable, to meet special occasions demand；(2) present invention by setting Variable Control end, control variable from
Moving gear and the intermeshing center of variable driving gear are away from realizing the purpose of gear pump variable, the present invention is right from principle
The prior art is innovated.
Detailed description of the invention
Fig. 1, Fig. 2 are whole assembly schematic perspective view of the invention.
Fig. 3, Fig. 4 are the whole explosive view of the present invention.
Fig. 5, Fig. 6, Fig. 7, Fig. 8, Fig. 9, Figure 10, Figure 11, Figure 12, Figure 13, Figure 14, Figure 15, Figure 16, Figure 17, Figure 19, Figure 20
For the assembly schematic perspective view of parts thereof of the present invention.
Figure 18 is the schematic perspective view of variable bearing block in the present invention.
Figure 21 is that Variable Control end does not work variations per hour driving gear and variable driven gear different operating shape in the present invention
State schematic diagram.
Figure 22 is Variable Control end work in the present invention, and variable driving gear and variable driven gear center are away from changing
Variable operation principle schematic diagram.
Drawing reference numeral: 1- quantifies driving shaft；2- drive end bearing bracket；3- Variable Control end；4- quantifies the pump housing；5- intermediate bulkhead；6-
The variable pump housing；7- rear end cap；8- quantifies driven shaft；9- quantifies driving gear；10- quantifies driven gear；11- quantifies platen；12-
Upper cydariform tooth shaft；13- barreled tooth flank；Cydariform tooth shaft under 14-；15- variable driven shaft；16- variable driven gear；17- variable is actively
Gear；18- variable driving shaft；Platen before 19- variable；Platen after 20- variable；21- variable bearing block；22- needle bearing；23-
Axle envelope；24- seals blade；Higher-pressure region on the inside of 25- gear；Low-pressure area on the inside of 26- gear；27- variable piston；28- reset spring；
29- gear outside high pressure area；30- gear outside low pressure area；401- quantifies oil outlet；402- quantifies oil inlet；601- variable goes out
Hydraulic fluid port；602- variable oil inlet；1701- follower plate；The higher-pressure region 1702- oil inlet；1801- active plate；1802- low-pressure area is fuel-displaced
Mouthful；The higher-pressure region 2001- oil inlet passage；2002- low-pressure area goes out oil hole；2003- low-pressure area oil discharge passage.
Specific embodiment
The invention will be further described combined with specific embodiments below, in the illustrative examples and explanation of the invention
For explaining the present invention, but it is not as a limitation of the invention.
As shown in fig. 1 to figure 20, a kind of gear pump with variable capacity, including drive end bearing bracket 2 and rear end cap 7, the quantitative pump housing 4 and variable pump
Body 6, quantitative driving shaft 1 and quantitative driven shaft 8, quantitative driving gear 9 and quantitative driven gear 10, variable driving shaft 18 and variable
Driven shaft 15, variable driving gear 17 and variable driven gear 16, intermediate bulkhead 5, upper cydariform tooth shaft 12 and lower cydariform tooth shaft 14.
Drive end bearing bracket 2 is mounted on quantitative 4 side of the pump housing by screw, and quantitative 4 other side of the pump housing is equipped with intermediate bulkhead 5, and intermediate bulkhead 5 is another
Side is equipped with the variable pump housing 6, and 6 other side of the variable pump housing is equipped with rear end cap 7 by screw.Quantitative driving shaft 1 is located at quantitative
4 top position of the pump housing, quantitative 1 one end of driving shaft are rotatably installed in 2 top of drive end bearing bracket by needle bearing 22, and the other end passes through rolling
Needle bearing 22 is rotatably installed in 4 side of intermediate bulkhead, is coaxially installed with quantitative driving gear 9 on quantitative driving shaft 1.It is quantitative driven
Axis 8 is located at quantitative 4 lower position of the pump housing, and quantitative 8 one end of driven shaft is rotatably installed in 2 lower part of drive end bearing bracket by needle bearing 22,
The other end is rotatably installed in 5 side of intermediate bulkhead by needle bearing 22, is coaxially installed with quantitative driven tooth on quantitative driven shaft 8
Wheel 10, and be intermeshed with quantitative driving gear 9.The two sides of quantitative driving gear 9 and quantitative driven gear 10 are respectively arranged with
One quantitative platen 11.Quantitative driving shaft 1 and quantitatively driven shaft 8 are respectively arranged with internal tooth close to one end of intermediate bulkhead 5.Variable
Driving shaft 18 is located at 6 top position of the variable pump housing, and 18 one end of variable driving shaft is rotatably installed in middle interval by needle bearing 22
4 side of plate, the other end are rotatably installed on rear end cap 7 by needle bearing 22；Variable driving shaft 18 is provided circumferentially about eight
Active plate 1801, eight active plates 1801 are uniformly arranged in pairs on 18 circumference of variable driving shaft.Variable driving gear 17
It is provided centrally with through-hole, the through-hole is provided circumferentially about there are eight follower plates 1701, and eight follower plates 1701 are uniformly distributed in pairs
It is arranged on through-hole circumference.Variable driving gear 17 is rotatably installed on variable driving shaft 18, each group of follower plate 1701 and every
One group of active plate 1801 is alternately distributed.6 outer lower portion of the variable pump housing is provided with Variable Control end 3, and 3 inside of Variable Control end is up and down
It is slidably fitted with variable piston 27, reset spring 28 is provided between variable piston 27 and Variable Control end 3.On variable piston 27
Portion is provided with variable bearing block 21, and variable driven shaft 15 is rotatably installed in variable bearing block 21, coaxial on variable driven shaft 15
It is provided with variable driven gear 16, variable driven gear 16 and variable driving gear 17 are intermeshed.17 He of variable driving gear
16 two sides of variable driven gear are respectively arranged with before variable platen 20 after platen 19 and variable.Variable driving shaft 18 and variable are driven
Axis 15 is respectively arranged with internal tooth close to one end of intermediate bulkhead 5.Upper cydariform tooth shaft 12 is mounted on 5 top of intermediate bulkhead, lower cydariform
Tooth shaft 14 is mounted on 5 lower part of intermediate bulkhead, and upper cydariform tooth shaft 12 and lower 14 both ends of cydariform tooth shaft are coaxially arranged with barreled tooth flank respectively
13.The barreled tooth flank 13 at upper 12 both ends of cydariform tooth shaft respectively with 18 one end of internal tooth and variable driving shaft of quantitative 1 one end of driving shaft
Internal tooth intermeshing.The barreled tooth flank 13 at lower 14 both ends of cydariform tooth shaft is driven with the internal tooth of quantitative 8 one end of driven shaft and variable respectively
The internal tooth of 15 one end of axis is intermeshed.
Quantitative 4 two sides of the pump housing are respectively arranged with quantitative oil outlet 401 and quantitative oil inlet 402, quantitative oil outlet 401 with it is fixed
The gear outside high pressure area 29 in amount driving gear 9 and quantitative driven gear 10 engagement outside is connected, quantitative oil inlet 402 with determine
Amount driving gear 9 is connected with the gear outside low pressure area 30 in the quantitative engagement of driven gear 10 outside.6 two sides of variable pump housing difference
It is provided with variable oil outlet 601 and variable oil inlet 602, variable oil outlet 601 and variable driving gear 17 and variable driven tooth
The gear outside high pressure area 29 in 16 engagement outside of wheel is connected, and variable oil inlet 602 and variable driving gear 17 and variable are driven
The gear outside low pressure area 30 in the engagement of gear 16 outside is connected.
Platen 20 is bilateral symmetry after platen 19 and variable before variable, and each group on variable driving gear 17 is driven
Region between two groups of active plates 1801 adjacent on variable driving shaft 18 is divided into higher-pressure region 25 and gear on the inside of gear by plate 1701
26 two parts of inside low-pressure area.The side setting that platen 20 is in contact with variable driving gear 17 after platen 19 and variable before variable
There is higher-pressure region oil inlet passage 2001, the other side is provided with low-pressure area oil discharge passage 2003, and 2003 end of low-pressure area oil discharge passage is set
It is equipped with low-pressure area and goes out oil hole 2002.Variable driving gear 17 be located on the inside of gear at 25 position of higher-pressure region be provided with higher-pressure region into
Hydraulic fluid port 1702, higher-pressure region oil inlet passage 2001 by being connected with higher-pressure region oil inlet 1702, by gear outside high pressure area 29 with
Higher-pressure region 25 is connected on the inside of gear, so that the high pressure oil in gear outside high pressure area is led to higher-pressure region 25 on the inside of gear.Variable
Driving shaft 18, which is located on the inside of gear, is provided with low-pressure area oil outlet 1802 at 26 position of low-pressure area, and low-pressure area oil outlet 1802 passes through
Variable driving shaft 18 is connected with the low-pressure area oil discharge passage 2003 on platen 19 before platen 19 before variable and variable, finally by tooth
Wheel outside low pressure area 30 is connected with low-pressure area 26 on the inside of gear, so that the low pressure oil of low-pressure area 26 on the inside of gear is led to gear
Outside low pressure area 30.I.e. when variable driving gear 17 and the intermeshing of variable driven gear 16 are started to work, variable driving tooth
High pressure oil in the gear outside high pressure area 29 in wheel 17 and the engagement of variable driven gear 16 outside enters higher-pressure region on the inside of gear
25, so that variable driving gear 17 be driven to rotate around variable driving shaft 18, make variable driving gear 17 and variable driven gear 16
The flank of tooth remain contact condition, while the low pressure oil on the inside of gear in low-pressure area 26 leads to gear outside low pressure area 30.
Sealing blade 24, each group of follower plate are provided between two active plates 1801 in each group of active plate 1801
Sealing blade 24 is provided between two follower plates 1701 in 1701.Axle envelope is provided between quantitative driving shaft 1 and drive end bearing bracket 2
23.Needle bearing 22 is provided between variable driven shaft 15 and variable bearing block 21.
Working principle of the present invention: the present invention is mainly adjusted by the center of variable driving gear 17 and variable driven gear 16
Away from the variable for realizing gear pump；The normal work of cascade realization gear pump with variable capacity is carried out by the way that the pump housing 4 and the variable pump housing 6 will be quantified
To make, prime quantifies on the one hand effect that the pump housing 4 realizes common quantitative gear pump, on the other hand realize the effect of gear transfer box,
Cydariform tooth shaft 12 and lower cydariform tooth shaft 14 force variable driving gear 17 and variable driven gear 16 to rotate synchronously on auxiliary.Work as change
The amount pump housing 6 is not in working condition or when in running order but gear outside high pressure area 29 does not export high pressure oil, variable piston
27 make variable driven gear 16 and variable driving gear 17 reach maximum engagement state under the effect of reset spring 28, at this point, pump
Discharge capacity it is maximum, as shown in figure 21；When the variable pump housing 6 is in running order and output high pressure oil, gear outside high pressure area 29
High pressure oil force variable driven gear 16 mobile to make variable driven gear 16 and variable actively to 3 direction of Variable Control end
The center of gear 17 is away from increase, while high pressure oil is via the higher-pressure region oil inlet passage on platen 20 after platen 19 before variable and variable
Entering variable driving gear 17 is located at higher-pressure region 25 on the inside of gear to make variable driving gear 17 relative to variable driving shaft 18
Rotation is such as schemed so that variable driven gear 16 and variable driving gear 17 are constantly in meshing state in multivariable process
Shown in 22；When variable pump entering variable state, high pressure oil is passed through by Variable Control end 3 to drive variable piston 27 to variable
17 direction of driving gear movement, to make two gear centres away from reducing to achieve the purpose that reduce discharge capacity.
Claims (5)
1. a kind of gear pump with variable capacity, including drive end bearing bracket (2) and rear end cap (7), quantitative the pump housing (4) and the variable pump housing (6), quantitative master
Moving axis (1) and quantitative driven shaft (8), quantitative driving gear (9) and quantitative driven gear (10), variable driving shaft (18) and variable
Driven shaft (15), variable driving gear (17) and variable driven gear (16), intermediate bulkhead (5), upper cydariform tooth shaft (12) and under
Cydariform tooth shaft (14), it is characterised in that: the drive end bearing bracket (2) is mounted on the quantitative pump housing (4) side by screw, the quantitative pump housing
(4) other side is equipped with intermediate bulkhead (5), and the intermediate bulkhead (5) other side is equipped with the variable pump housing (6), the change
It measures the pump housing (6) other side and rear end cap (7) is equipped with by screw；The quantitative driving shaft (1) is located above quantitative the pump housing (4)
Position, quantitative driving shaft (1) one end are rotatably installed in drive end bearing bracket (2) top by needle bearing (22), and the other end passes through needle roller
Bearing (22) is rotatably installed in intermediate bulkhead (5) side, is coaxially installed with quantitative driving gear (9) on quantitative driving shaft (1)；
The quantitative driven shaft (8) is located at the quantitative pump housing (4) lower position, and quantitative driven shaft (8) one end passes through needle bearing (22)
It is rotatably installed in drive end bearing bracket (2) lower part, the other end is rotatably installed in intermediate bulkhead (5) side by needle bearing (22), quantitative
It is coaxially installed on driven shaft (8) quantitative driven gear (10), and is intermeshed with quantitative driving gear (9)；Quantitative driving tooth
The two sides of wheel (9) and quantitative driven gear (10) are respectively arranged with one quantitative platen (11)；Quantitative driving shaft (1) and quantify from
Moving axis (8) is respectively arranged with internal tooth close to the one end of intermediate bulkhead (5)；The variable driving shaft (18) is located at the variable pump housing
(6) top position, variable driving shaft (18) one end is rotatably installed in intermediate bulkhead (5) side by needle bearing (22), another
End is rotatably installed on rear end cap (7) by needle bearing (22)；Variable driving shaft (18) is provided circumferentially about eight active plates
(1801), eight active plates (1801) are uniformly arranged in pairs on variable driving shaft (18) circumference；The variable is actively
Gear (17) is provided centrally with through-hole, and the through-hole is provided circumferentially about eight follower plates (1701), eight follower plates (1701)
It is uniformly arranged on through-hole circumference in pairs；Variable driving gear (17) is rotatably installed on variable driving shaft (18), each
Group follower plate (1701) is alternately distributed with each group of active plate (1801)；The variable pump housing (6) outer lower portion is provided with Variable Control
Hold (3), slide up and down and is equipped with variable piston (27) inside the Variable Control end (3), the variable piston (27) with
Reset spring (28) are provided between Variable Control end (3)；Variable piston (27) top is provided with variable bearing block (21), described
Variable driven shaft (15) be rotatably installed in variable bearing block (21), it is driven to be coaxially arranged with variable on variable driven shaft (15)
Gear (16), the variable driven gear (16) and variable driving gear (17) are intermeshed；Variable driving gear (17) and
Variable driven gear (16) two sides are respectively arranged with before variable platen (20) after platen (19) and variable；Variable driving shaft (18) and
Variable driven shaft (15) is respectively arranged with internal tooth close to the one end of intermediate bulkhead (5)；The upper cydariform tooth shaft (12) is mounted on
Intermediate bulkhead (5) top, the lower cydariform tooth shaft (14) are mounted on intermediate bulkhead (5) lower part, upper cydariform tooth shaft (12) and under
Cydariform tooth shaft (14) both ends are coaxially arranged with barreled tooth flank (13) respectively；The barreled tooth flank (13) at upper cydariform tooth shaft (12) both ends respectively with
The internal tooth of quantitative driving shaft (1) one end and the internal tooth intermeshing of variable driving shaft (18) one end；Lower cydariform tooth shaft (14) both ends
Barreled tooth flank (13) be intermeshed respectively with the internal tooth of quantitative driven shaft (8) one end and the internal tooth of variable driven shaft (15) one end.
2. a kind of gear pump with variable capacity as described in claim 1, it is characterised in that: described quantitative pump housing (4) two sides are set respectively
Be equipped with quantitative oil outlet (401) and quantitative oil inlet (402), quantitative oil outlet (401) and quantitative driving gear (9) and quantitatively from
The gear outside high pressure area (29) in moving gear (10) engagement outside is connected, quantitative oil inlet (402) and quantitative driving gear (9)
It is connected with the gear outside low pressure area (30) in quantitative driven gear (10) engagement outside；The variable pump housing (6) two sides point
Be not provided with variable oil outlet (601) and variable oil inlet (602), variable oil outlet (601) and variable driving gear (17) and
The gear outside high pressure area (29) in variable driven gear (16) engagement outside is connected, and variable oil inlet (602) and variable are actively
Gear (17) is connected with the gear outside low pressure area (30) in variable driven gear (16) engagement outside.
3. a kind of gear pump with variable capacity as claimed in claim 1 or 2, it is characterised in that: platen (19) and change before the variable
Platen (20) is bilateral symmetry after amount, and each group of follower plate (1701) on variable driving gear (17) is by variable driving shaft
(18) region is divided into higher-pressure region (25) and gear inside low-pressure area on the inside of gear between two groups of adjacent active plates (1801) on
(26) two parts；The side that platen (20) is in contact with variable driving gear (17) after platen (19) and variable before variable is provided with
Higher-pressure region oil inlet passage (2001), the other side are provided with low-pressure area oil discharge passage (2003), low-pressure area oil discharge passage (2003) end
Portion is provided with low-pressure area and goes out oil hole (2002)；Variable driving gear (17) is located on the inside of gear to be arranged at higher-pressure region (25) position
Have higher-pressure region oil inlet (1702), the higher-pressure region oil inlet passage (2001) with higher-pressure region oil inlet (1702) by being connected
It is logical, gear outside high pressure area (29) is connected with higher-pressure region (25) on the inside of gear；Variable driving shaft (18) is located on the inside of gear
It is provided with low-pressure area oil outlet (1802) at low-pressure area (26) position, low-pressure area oil outlet (1802) passes through variable driving shaft (18)
It is connected with the low-pressure area oil discharge passage (2003) before platen before variable (19) and variable on platen (19), it finally will be on the outside of gear
Low-pressure area (30) is connected with low-pressure area (26) on the inside of gear.
4. a kind of gear pump with variable capacity as described in claim 1, it is characterised in that: in each group of active plate (1801)
Sealing blade (24), two follower plates (1701) in each group of follower plate (1701) are provided between two active plates (1801)
Between be provided with sealing blade (24).
5. a kind of gear pump with variable capacity as described in claim 1, it is characterised in that: the quantitative driving shaft (1) and drive end bearing bracket
(2) it is provided between axle envelope (23), is provided with needle bearing between the variable driven shaft (15) and variable bearing block (21)
(22).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710298105.3A CN107061261B (en) | 2017-04-30 | 2017-04-30 | A kind of gear pump with variable capacity |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710298105.3A CN107061261B (en) | 2017-04-30 | 2017-04-30 | A kind of gear pump with variable capacity |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN107061261A CN107061261A (en) | 2017-08-18 |
| CN107061261B true CN107061261B (en) | 2019-05-10 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710298105.3A Active CN107061261B (en) | 2017-04-30 | 2017-04-30 | A kind of gear pump with variable capacity |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN107061261B (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110374865B (en) * | 2019-08-25 | 2020-10-13 | 符鹏 | Variable gear pump |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DK146454C (en) * | 1976-09-15 | 1984-03-19 | Crepaco | GEAR PUMP |
| CN201407170Y (en) * | 2009-05-18 | 2010-02-17 | 苗新波 | Variable gear wheel pump |
| CN204738961U (en) * | 2015-06-02 | 2015-11-04 | 西北工业大学 | A variable gear pump |
| CN105041639A (en) * | 2015-08-27 | 2015-11-11 | 刘凡 | External gearing variable gear pump |
| CN205135990U (en) * | 2015-09-23 | 2016-04-06 | 郑秀美 | Novel external gear pump |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1007646B (en) * | 1985-05-16 | 1990-04-18 | 杨德贵 | Radial moving variable gear pump (motor) |
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2017
- 2017-04-30 CN CN201710298105.3A patent/CN107061261B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DK146454C (en) * | 1976-09-15 | 1984-03-19 | Crepaco | GEAR PUMP |
| CN201407170Y (en) * | 2009-05-18 | 2010-02-17 | 苗新波 | Variable gear wheel pump |
| CN204738961U (en) * | 2015-06-02 | 2015-11-04 | 西北工业大学 | A variable gear pump |
| CN105041639A (en) * | 2015-08-27 | 2015-11-11 | 刘凡 | External gearing variable gear pump |
| CN205135990U (en) * | 2015-09-23 | 2016-04-06 | 郑秀美 | Novel external gear pump |
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|---|---|
| CN107061261A (en) | 2017-08-18 |
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