CN109441758B - Hydraulic pump with noise reduction function - Google Patents
Hydraulic pump with noise reduction function Download PDFInfo
- Publication number
- CN109441758B CN109441758B CN201811542516.3A CN201811542516A CN109441758B CN 109441758 B CN109441758 B CN 109441758B CN 201811542516 A CN201811542516 A CN 201811542516A CN 109441758 B CN109441758 B CN 109441758B
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- China
- Prior art keywords
- plunger
- balancing
- pump
- oil
- bearing groove
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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- 230000009467 reduction Effects 0.000 title claims abstract description 11
- 230000007246 mechanism Effects 0.000 claims abstract description 29
- 238000001125 extrusion Methods 0.000 claims description 4
- 230000008878 coupling Effects 0.000 claims description 3
- 238000010168 coupling process Methods 0.000 claims description 3
- 238000005859 coupling reaction Methods 0.000 claims description 3
- 239000007788 liquid Substances 0.000 claims description 2
- 230000005540 biological transmission Effects 0.000 abstract description 3
- 239000006096 absorbing agent Substances 0.000 description 3
- 238000010586 diagram Methods 0.000 description 3
- 230000035939 shock Effects 0.000 description 3
- 239000012530 fluid Substances 0.000 description 2
- 238000010521 absorption reaction Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 238000002360 preparation method Methods 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 229920003051 synthetic elastomer Polymers 0.000 description 1
- 239000005061 synthetic rubber Substances 0.000 description 1
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
- F04B17/00—Pumps characterised by combination with, or adaptation to, specific driving engines or motors
- F04B17/03—Pumps characterised by combination with, or adaptation to, specific driving engines or motors driven by electric motors
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
- F04B1/00—Multi-cylinder machines or pumps characterised by number or arrangement of cylinders
- F04B1/12—Multi-cylinder machines or pumps characterised by number or arrangement of cylinders having cylinder axes coaxial with, or parallel or inclined to, main shaft axis
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
- F04B1/00—Multi-cylinder machines or pumps characterised by number or arrangement of cylinders
- F04B1/12—Multi-cylinder machines or pumps characterised by number or arrangement of cylinders having cylinder axes coaxial with, or parallel or inclined to, main shaft axis
- F04B1/122—Details or component parts, e.g. valves, sealings or lubrication means
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
- F04B53/00—Component parts, details or accessories not provided for in, or of interest apart from, groups F04B1/00 - F04B23/00 or F04B39/00 - F04B47/00
- F04B53/001—Noise damping
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
- F04B53/00—Component parts, details or accessories not provided for in, or of interest apart from, groups F04B1/00 - F04B23/00 or F04B39/00 - F04B47/00
- F04B53/001—Noise damping
- F04B53/003—Noise damping by damping supports
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
- F04B53/00—Component parts, details or accessories not provided for in, or of interest apart from, groups F04B1/00 - F04B23/00 or F04B39/00 - F04B47/00
- F04B53/10—Valves; Arrangement of valves
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Reciprocating Pumps (AREA)
- Details Of Reciprocating Pumps (AREA)
Abstract
The invention discloses a hydraulic pump with a noise reduction function, which comprises a plunger pump and a motor for driving the plunger pump, wherein two supporting legs are arranged at the bottoms of the motor and the plunger pump, a bearing groove is formed in the middle of the upper surface of a buffer seat, strip-shaped swing holes are formed in the side walls around the buffer seat, the supporting legs are positioned in the bearing groove, swing rods extending into the swing holes are fixed on the side walls around the supporting legs, a leveling mechanism for supporting the middle of the swing rods is arranged in the bearing groove, a balancing mechanism for supporting the bottom surface center of a bottom plate is further arranged in the bearing groove, a universal connector is connected between adjacent buffer seats, and a sound absorbing paper cushion layer is arranged between a pump body flange and a valve plate flange. According to the invention, on one hand, noise transmission of fixed frequency in the pump body is reduced, and on the other hand, rigid collision between the pump body and other structures is slowed down, so that the purpose of noise reduction is achieved.
Description
Technical Field
The invention relates to the technical field of hydraulic equipment, in particular to a hydraulic pump with a noise reduction function.
Background
The hydraulic plunger pump is an important device in a hydraulic system, and the plunger pump reciprocates in a pump body to change the volume of a sealed working cavity so as to realize oil suction and oil discharge. The plunger pump can generate larger noise when in work, on one hand, the plunger can generate noise with fixed frequency in the pump body due to the fact that the plunger periodically reciprocates in the pump body; on the other hand, the plunger moves back and forth, so that the pump body can vibrate severely regularly, and the pump body can generate rigid collision with other mechanisms to generate noise due to excessive vibration, so that improvement is needed from the two aspects, and the noise generated when the plunger pump works is reduced.
Disclosure of Invention
The invention aims to provide a hydraulic pump with a noise reduction function, which achieves the purpose of noise reduction by reducing noise transmission of fixed frequency in a pump body and by slowing down rigid collision between the pump body and other structures.
The invention aims at realizing the following technical scheme: the utility model provides a hydraulic pump with function of making an uproar falls, includes the plunger pump and is used for driving the motor of plunger pump, the bottom of motor and plunger pump all is provided with two landing legs, and every landing leg bottom all is provided with the buffer seat, and the landing leg includes the bottom plate and fixes the branch on the bottom plate, branch and corresponding motor or plunger pump fixed connection, open at the upper surface middle part of buffer seat has the loading groove, all open on the lateral wall around the buffer seat has the swing hole of bar, the bottom plate is located the loading groove, and all is fixed with the swinging arms that stretches into in the swing hole on the lateral wall around the bottom plate, be provided with the levelling mechanism that is used for supporting the swinging arms middle part in the loading groove, and still install the balancing mechanism that is used for supporting bottom plate bottom surface center in the loading groove, be connected with universal connector between the adjacent buffer seat, the plunger pump includes the pump body and the valve plate through flange connection between be provided with the fluid passageway of intercommunication each other, open the oil inlet on the pump body, be provided with the oil-out on the valve plate, be provided with plunger mechanism in the pump body, the buffer seat one side movable mounting of the bottom of plunger pump landing leg has the swing arm, connects oil groove on the bottom one side of the loading groove to be fixed with the flange that stretches into the swing hole, the flange is located under the flange.
Further, the balance mechanism comprises a connecting rod, a balance ring and a plurality of balance rods, the balance balls are fixed at two ends of the connecting rod, a spherical hole which is in running fit with the balance balls at the upper end of the connecting rod is formed in the center of the bottom surface of the bottom plate, a connecting support is arranged in the center of the lower surface of the buffer seat, the connecting support comprises a support column and a connecting flange formed at the bottom of the support column, the upper end part of the support column penetrates into a bearing groove, the middle part of the top surface of the support column is provided with a spherical hole which is in running fit with the balance balls at the lower end of the connecting rod, the balance ring is sleeved on the connecting rod, the balance rods are radially arranged in the balance ring, one end of each balance rod is fixedly connected with the connecting rod, the other end of each balance rod movably penetrates through the outer side wall of the balance ring, and a balance spring sleeved on the balance rod is fixed between the inner side wall of the balance ring and the bottom wall of the bearing groove.
Further, the leveling mechanism comprises a U-shaped clamp body and a straight adjusting rod fixedly connected with the middle part of the U-shaped clamp body, the middle part of the swinging rod is clamped in a U-shaped hole of the U-shaped clamp body, the lower end of the straight adjusting rod penetrates through the bottom wall of the bearing groove of the buffer seat, and a leveling spring which is used for sleeving the straight adjusting rod is fixed between the U-shaped clamp body and the bottom wall of the bearing groove of the buffer seat.
Further, plunger mechanism includes the connecting axle, with connecting axle fixed connection's sloping cam plate, stopper cylinder liner and two piece at least plungers, the connecting axle passes through the coupling joint with the drive shaft of motor, be fixed with the hinge seat that equals with plunger quantity on the inclined plane of sloping cam plate, plunger one end is articulated with the hinge seat, and the other end sliding fit is provided with the oil duct in the stopper cylinder liner in the plunger, and the oil duct communicates each other with the fluid passageway of the pump body and valve plate respectively, and is provided with the check valve group in the oil duct.
Further, the check valve group comprises a first check valve and a second check valve, the first check valve is arranged in an oil delivery channel of the plunger, and the second check valve is arranged in an oil liquid channel of the valve plate.
Further, an extrusion buffer layer is arranged on the side wall of the buffer seat around the swing hole.
The invention has the beneficial effects that:
1. by arranging the swinging rod and the leveling mechanism, the rigid contact between the side wall of the bottom plate of the supporting leg and the side wall of the buffer seat can be reduced, so that the collision area is reduced, and the generation of noise is controlled;
2. by arranging the balance mechanism, the rigid contact between the bottom wall of the bottom plate of the supporting leg and the surface wall of the buffer seat can be reduced, so that the collision area is reduced, and the noise is reduced;
3. the sound absorption paper cushion layer is arranged, so that noise emitted from the connecting flange on the pump body can be absorbed to a certain extent, and oil leaking from the connecting flange of the pump body can be timely collected by arranging the oil receiving seat, so that pollution caused by the oil can be avoided;
4. the pump body is simple and compact in structure, noise is greatly reduced, and noise is reduced to a certain extent from the source.
Drawings
FIG. 1 is a schematic diagram of the structure of the present invention;
FIG. 2 is a schematic diagram of the internal structure of the plunger pump according to the present invention;
FIG. 3 is a schematic view of a buffer seat according to the present invention;
FIG. 4 is a schematic diagram of a balance mechanism according to the present invention;
fig. 5 is a schematic structural view of a leveling mechanism according to the present invention.
The marks in the figure: 1-a motor; 2-a buffer seat; 3-a plunger pump; 4-supporting rods; 5-a bottom plate; 6-swinging rod; 7-a balancing mechanism; 8-leveling mechanism; 9-universal connectors; 10-a movable bolt; 11-an oil receiving seat; 12-an oil receiving groove; 13-a sound absorbing paper cushion layer; 21-a carrying groove; 22-swinging holes; 23-extruding the buffer layer; 24-prop; 25-connecting flanges; 31-a pump body; 32-port plate; 33-swash plate; 34-a hinged support; 35-a plunger; 36-an oil delivery duct; 37-one-way valve group; 38-plugging a cylinder sleeve; 39-an oil passage; 71-a balance ball; 72-connecting rod; 73-a return spring; 74-balancing ring; 75-balancing bars; 76-balancing springs; 81-a straight adjusting rod; 82-U-shaped clamp body; 83-leveling spring.
Detailed Description
As shown in fig. 1 to 5, the hydraulic pump with noise reduction function provided in this embodiment includes a plunger pump 3 and a motor 1 for driving the plunger pump 3, in this embodiment, the plunger pump 3 includes a pump body 31 and a valve plate 32 connected by a flange, an oil inlet is opened on the pump body 31, an oil outlet is provided on the valve plate 32, an oil channel 39 communicating with each other is provided between the pump body 31 and the valve plate 32, a plunger mechanism is provided in the pump body 31, oil enters from the oil inlet, is pressed into the oil channel 39 of the valve plate 32 by the plunger mechanism, and finally is discharged from the oil outlet.
The plunger mechanism comprises a connecting shaft, a swash plate 33 fixedly connected with the connecting shaft, a plug cylinder sleeve 38 and at least two plungers 35, one end of the connecting shaft is connected with a driving shaft of the motor 1 through a coupling, the other end of the connecting shaft penetrates through the swash plate 33 and is fixedly connected with the plug cylinder sleeve 38, one surface of the swash plate 33 far away from the motor 1 is an inclined surface, hinged seats 34 equal to the plungers 35 in number are fixed on the inclined surface of the swash plate 33, a plurality of sliding cavities matched with the plungers 35 are arranged in the plug cylinder sleeve 38, one end of each plunger 35 is hinged with the hinged seat 34, the other end of each plunger 35 is in sliding fit with the sliding cavity of the corresponding plug cylinder sleeve 38, an oil conveying passage 36 is arranged in each plunger 35, the oil conveying passage 36 is respectively communicated with an oil passage 39 of the pump body 31 and an oil passage 39 of the corresponding valve block 32, and concretely, the one-way valve 37 comprises a first one-way valve and a second one-way valve, the first one-way valve is arranged in the oil conveying passage 36 of the plunger 35, the second one-way valve is arranged in the oil passage 39 of the corresponding valve block 32, and the motor 1 drives the swash plate 33 and the plug cylinder sleeve 38 to rotate, so that the plungers 35 reciprocate in the sliding cavities. Because the plunger 35 makes regular reciprocating motion, noise with fixed frequency can be formed in the pump body 31, most of the noise can be scattered from between the flange of the pump body 31 and the flange of the valve plate 32, and therefore, the sound-absorbing paper cushion layer 13 is arranged between the flange of the pump body 31 and the flange of the valve plate 32, so that the noise transmission can be slowed down.
The motor 1 and the bottom of plunger pump 3 all are provided with two landing legs, and every landing leg bottom all is provided with buffer seat 2, and the landing leg includes bottom plate 5 and fixes branch 4 on bottom plate 5, branch 4 and corresponding motor 1 or plunger pump 3 fixed connection, open at the upper surface middle part of buffer seat 2 has carrier groove 21, and bottom plate 5 is located carrier groove 21, specifically, buffer seat 2's shape is quadrangular, and carrier groove 21 is rectangular frame groove, all open the swing hole 22 of bar on buffer seat 2's the lateral wall all around, all be fixed with on bottom plate 5 the lateral wall around and stretch into swing rod 6 in the swing hole 22, be provided with extrusion buffer layer 23 on the buffer seat 2 lateral wall around the swing hole 22, extrusion buffer layer 23 adopts synthetic rubber preparation, be provided with in the carrier groove 21 and be used for supporting the leveling mechanism 8 at the middle part of swing rod 6, leveling mechanism 8 include U type clamp 82 and with U type clamp 82 middle part fixed connection's straight adjustment pole 81, the chucking of swing rod 6 middle part is rectangular frame groove, but the bottom wall 21 is used for the impact between the adjustable bottom wall of U type clamp 82 and the swing rod 6 at the bottom wall of U type clamp 82, and the adjustable bottom wall of the side wall of swing rod 81 is used for the shock absorber 81, and the adjustable bottom wall of the side wall of the U type clamp 82 is used for the shock absorber 81 is fixed to the shock absorber 81.
The balance mechanism 7 for supporting the center of the bottom surface of the bottom plate 5 is arranged in the bearing groove 21, the balance mechanism 7 comprises a connecting rod 72, a balance ring 74 and a plurality of balance rods 75, the balance balls 71 are fixed at two ends of the connecting rod 72, a spherical hole which is in running fit with the balance balls 71 at the upper end of the connecting rod 72 is arranged at the center of the bottom surface of the bottom plate 5, a connecting support saddle is arranged at the center of the lower surface of the buffer seat 2, the connecting support saddle comprises a support column 24 and a connecting flange 25 formed at the bottom of the support column 24, the connecting flange 25 can be connected with the rest mechanism, the upper end part of the support column 24 penetrates into the bearing groove 21, the middle part of the top surface of the support column 24 is provided with spherical holes which are in running fit with the balance balls 71 at the lower end of the connecting rod 72, the balance balls 71 at two ends of the connecting rod 72 are respectively in the two spherical holes, to realize the rotation connection between the bottom plate 5 and the buffer seat 2, in order to limit the rotation amplitude, the balance ring 74 is sleeved on the connecting rod 72, a plurality of balance rods 75 are radially arranged in the balance ring 74, specifically, one end of each balance rod 75 is fixed on the side wall of the connecting rod 72, the other end of each balance rod movably penetrates through the outer side wall of the corresponding balance ring 74, a balance spring 76 sleeved on the balance rod 75 is fixed between the inner side wall of the corresponding balance ring 74 and the connecting rod 72, a plurality of return springs 73 are fixed between the lower surface of the corresponding balance ring 74 and the bottom wall of the corresponding bearing groove 21, when the bottom plate 5 swings relative to the buffer seat 2, the connecting rod 72 also swings, the balance springs 76 and the return springs 73 limit the connecting rod 72 in the radial and axial directions respectively, and the swing amplitude of the connecting rod 72 is controlled.
In order to improve the linkage in the support of the adjacent buffer seat 2, a universal connector 9 is connected between the adjacent buffer seats 2, and in addition, due to the arrangement of the sound absorbing paper cushion layer 13, the tightness between the pump body 31 and the valve plate 32 is reduced to a certain extent, therefore, an oil receiving seat 11 is arranged on one side of the buffer seat 2 at the bottom of the supporting leg of the plunger pump 3 through a sliding bolt 10, an oil receiving groove 12 is formed in the oil receiving seat 11, and the oil receiving groove 12 is positioned under the flange joint of the pump body 31 and the valve plate 32, so that oil leaking from the flange joint can be timely collected.
The foregoing is merely a preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any modification and substitution based on the technical scheme and the inventive concept provided by the present invention should be covered in the scope of the present invention.
Claims (4)
1. The utility model provides a hydraulic pump with function of making an uproar falls, includes the plunger pump and is used for driving the motor of plunger pump, its characterized in that: the bottom of the motor and the plunger pump are respectively provided with two supporting legs, each supporting leg is provided with a buffer seat, each supporting leg comprises a bottom plate and a supporting rod fixed on the bottom plate, each supporting rod is fixedly connected with the corresponding motor or plunger pump, the middle part of the upper surface of each buffer seat is provided with a bearing groove, the side walls around the buffer seat are respectively provided with a strip-shaped swinging hole, the bottom plate is positioned in each bearing groove, the side walls around the bottom plate are respectively fixedly provided with a swinging rod stretching into each swinging hole, each bearing groove is internally provided with a leveling mechanism for supporting the middle part of each swinging rod, each bearing groove is internally provided with a balancing mechanism for supporting the bottom surface center of the bottom plate, each leveling mechanism comprises a U-shaped clamp body and a straight adjusting rod fixedly connected with the middle part of the U-shaped clamp body, the middle part of each swinging rod is clamped in the U-shaped hole of the U-shaped clamp body, the lower end of each straight adjusting rod penetrates through the bottom wall of the bearing groove of the buffer seat, the U-shaped clamp body and the bottom wall of the bearing groove of the buffer seat are fixedly provided with leveling springs sleeved on the straight adjusting rods, the balancing mechanism comprises a connecting rod, a balancing ring and a plurality of balancing rods, the balancing balls are fixedly arranged at two ends of the connecting rod, the center of the bottom surface of the bottom plate is provided with a spherical hole which is in running fit with the balancing balls at the upper end of the connecting rod, the center of the lower surface of the buffer seat is provided with a connecting support, the connecting support comprises a support column and a connecting flange formed at the bottom of the support column, the upper end of the support column penetrates into the bearing groove, the middle part of the top surface of the support column is provided with a spherical hole which is in running fit with the balancing balls at the lower end of the connecting rod, the balancing ring is sleeved on the connecting rod, the balancing rods are radially arranged in the balancing ring, one ends of the balancing rods are fixedly connected with the connecting rod, the other ends of the balancing rods movably penetrate through the outer side walls of the balancing ring, the balancing springs sleeved on the balancing rods are fixedly arranged between the inner side walls of the balancing ring and the connecting rod, a plurality of return springs are fixed between the lower surface of the balance ring and the bottom wall of the bearing groove, a universal connector is connected between the adjacent buffer seats, the plunger pump comprises a pump body and a valve plate which are connected through a flange, an oil channel which is mutually communicated is arranged between the pump body and the valve plate, an oil inlet is formed in the pump body, an oil outlet is formed in the valve plate, a plunger mechanism is arranged in the pump body, an oil receiving seat is movably arranged on one side of the buffer seat at the bottom of the plunger pump leg, an oil receiving groove is formed in the oil receiving seat, the oil receiving groove is located under the joint of the pump body flange and the valve plate flange, and a sound absorbing paper cushion layer is arranged between the pump body flange and the valve plate flange.
2. The hydraulic pump with noise reduction function according to claim 1, characterized in that: the plunger mechanism comprises a connecting shaft, a swash plate fixedly connected with the connecting shaft, a plug cylinder sleeve and at least two plungers, wherein the connecting shaft is connected with a driving shaft of a motor through a coupling, hinged supports with the number equal to that of the plungers are fixed on the inclined surface of the swash plate, one end of each plunger is hinged with the hinged support, the other end of each plunger is slidably matched in the plug cylinder sleeve, an oil conveying passage is arranged in each plunger and is respectively communicated with an oil passage of a pump body and an oil passage of a valve plate, and a one-way valve group is arranged in each oil conveying passage.
3. The hydraulic pump with noise reduction function according to claim 2, characterized in that: the check valve group comprises a first check valve and a second check valve, the first check valve is arranged in an oil delivery channel of the plunger, and the second check valve is arranged in an oil liquid channel of the valve plate.
4. The hydraulic pump with noise reduction function according to claim 1, characterized in that: and an extrusion buffer layer is arranged on the side wall of the buffer seat around the swing hole.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811542516.3A CN109441758B (en) | 2018-12-17 | 2018-12-17 | Hydraulic pump with noise reduction function |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811542516.3A CN109441758B (en) | 2018-12-17 | 2018-12-17 | Hydraulic pump with noise reduction function |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN109441758A CN109441758A (en) | 2019-03-08 |
| CN109441758B true CN109441758B (en) | 2024-04-02 |
Family
ID=65559686
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201811542516.3A Active CN109441758B (en) | 2018-12-17 | 2018-12-17 | Hydraulic pump with noise reduction function |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN109441758B (en) |
Families Citing this family (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112082067A (en) * | 2019-06-13 | 2020-12-15 | 四川国亨时代国际贸易有限责任公司 | Hydraulic high-pressure pump with leveling function |
| CN111578142A (en) * | 2020-05-24 | 2020-08-25 | 王亚军 | Power supercharging device for petroleum transmission pipeline |
| CN112594147A (en) * | 2020-11-27 | 2021-04-02 | 江苏欧盛液压科技有限公司 | Device and method for preventing back pressure of inner cavity of plunger pump shell from being high |
| CN113864181B (en) * | 2021-09-29 | 2022-09-30 | 徐州新大隆化工泵业制造有限公司 | Three-plunger high-pressure reciprocating pump |
| CN114856992B (en) * | 2022-04-13 | 2023-08-22 | 德帕姆(杭州)泵业科技有限公司 | Rotary plunger pump |
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|---|---|---|---|---|
| US5000470A (en) * | 1989-07-24 | 1991-03-19 | Kent International, Inc. | Bicycle having rear shock absorbing arrangement and improved shock absorber for bicycles |
| CN103411731A (en) * | 2013-07-04 | 2013-11-27 | 河南科技大学 | Dynamic balance measuring swing frame of miniature rotor |
| CN104405604A (en) * | 2014-10-20 | 2015-03-11 | 浙江大学 | Ultrahigh-pressure axial plunger pump |
| CN206444258U (en) * | 2016-12-25 | 2017-08-29 | 山东鲁泰控股集团有限公司 | A kind of adjustable damping vibrating type new type pressure filter of level |
| CN108105047A (en) * | 2017-12-30 | 2018-06-01 | 徐秀芳 | A kind of inclined disc type oscillating plunger pump of complete dynamic balance |
| CN207573161U (en) * | 2017-10-26 | 2018-07-03 | 黄雪琼 | A kind of generator with shock-absorbing function |
| CN207935390U (en) * | 2018-02-01 | 2018-10-02 | 河北涞博传动机械制造有限公司 | A kind of speed reducer with long service life |
| CN209539519U (en) * | 2018-12-17 | 2019-10-25 | 贵阳力泉液压技术有限公司 | A kind of hydraulic pump with decrease of noise functions |
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2018
- 2018-12-17 CN CN201811542516.3A patent/CN109441758B/en active Active
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5000470A (en) * | 1989-07-24 | 1991-03-19 | Kent International, Inc. | Bicycle having rear shock absorbing arrangement and improved shock absorber for bicycles |
| CN103411731A (en) * | 2013-07-04 | 2013-11-27 | 河南科技大学 | Dynamic balance measuring swing frame of miniature rotor |
| CN104405604A (en) * | 2014-10-20 | 2015-03-11 | 浙江大学 | Ultrahigh-pressure axial plunger pump |
| CN206444258U (en) * | 2016-12-25 | 2017-08-29 | 山东鲁泰控股集团有限公司 | A kind of adjustable damping vibrating type new type pressure filter of level |
| CN207573161U (en) * | 2017-10-26 | 2018-07-03 | 黄雪琼 | A kind of generator with shock-absorbing function |
| CN108105047A (en) * | 2017-12-30 | 2018-06-01 | 徐秀芳 | A kind of inclined disc type oscillating plunger pump of complete dynamic balance |
| CN207935390U (en) * | 2018-02-01 | 2018-10-02 | 河北涞博传动机械制造有限公司 | A kind of speed reducer with long service life |
| CN209539519U (en) * | 2018-12-17 | 2019-10-25 | 贵阳力泉液压技术有限公司 | A kind of hydraulic pump with decrease of noise functions |
Also Published As
| Publication number | Publication date |
|---|---|
| CN109441758A (en) | 2019-03-08 |
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