CN114320806A - Hydraulic pump shell and machine core using same - Google Patents
Hydraulic pump shell and machine core using same Download PDFInfo
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- CN114320806A CN114320806A CN202210008470.7A CN202210008470A CN114320806A CN 114320806 A CN114320806 A CN 114320806A CN 202210008470 A CN202210008470 A CN 202210008470A CN 114320806 A CN114320806 A CN 114320806A
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- 230000003014 reinforcing effect Effects 0.000 claims abstract description 15
- 238000009434 installation Methods 0.000 claims abstract description 10
- 238000009826 distribution Methods 0.000 claims description 11
- 239000012530 fluid Substances 0.000 claims description 2
- 238000005728 strengthening Methods 0.000 claims description 2
- 230000000694 effects Effects 0.000 claims 4
- 230000006978 adaptation Effects 0.000 claims 1
- 238000000034 method Methods 0.000 abstract description 4
- 230000009286 beneficial effect Effects 0.000 abstract description 2
- 239000000463 material Substances 0.000 description 3
- 238000010586 diagram Methods 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 238000007789 sealing Methods 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
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Abstract
The invention discloses a hydraulic pump shell and a machine core using the same, wherein the hydraulic pump shell comprises a double-layer shell, a closed cavity, a reinforcing rib, an oil inlet, an oil discharge port, a clearance groove and an installation cover plate, wherein the closed cavity is arranged in the middle of an inner cavity of the double-layer shell, the clearance groove is arranged at the tail end of the inner part of the double-layer shell, the closed cavity is arranged in the middle of the inner cavity of the double-layer shell, the closed cavity is provided with an inclined end face, the inclination angle of the inclined end face is 16 degrees, and the diameter of the clearance groove is more than or equal to 75 mm; the closed cavity is provided with an installation cover plate, the installation cover plate is respectively provided with an oil inlet and an oil discharge port, the clearance groove is provided with an output through hole, and the output through hole is communicated with the oil inlet; the inner wall of the double-layer shell is provided with a reinforcing rib, and the closed cavity of the double-layer shell is wrapped by the reinforcing rib. The beneficial effects are that: the noise generated by the pump body in the motion process can be effectively reduced, and the power of the pump can be increased.
Description
Technical Field
The invention relates to the technical field of hydraulic pumps, in particular to a hydraulic pump shell and a machine core using the same.
Background
The existing hydraulic pump can generate larger noise to a pump shell in the operation process, when the power of the pump is not enough to meet the needs of people, the motion capability of the pump cannot be increased, the requirement on the application scene of the pump is too high, and the existing pump shell and a machine core are assembled, the pump body and the pump cover are screwed into a threaded hole through a bolt to achieve the purpose of assembling, and the sealing performance of the whole pump body is greatly reduced due to the connection mode.
Disclosure of Invention
In view of the above-mentioned drawbacks, an object of the present invention is to provide a hydraulic pump casing and a movement using the same, which can effectively reduce noise generated during the movement of the pump body and increase the power of the pump.
In order to achieve the purpose, the invention adopts the following technical scheme:
the utility model provides a hydraulic pump case, includes double-deck shell, closed chamber, strengthening rib, oil inlet, unloads the hydraulic fluid port, keeps away dead slot and installation apron, its characterized in that: the closed cavity is arranged in the middle of the inner cavity of the double-layer shell, the tail end of the inner part of the double-layer shell is provided with an empty avoiding groove, the middle of the inner cavity of the double-layer shell is provided with the closed cavity, the closed cavity is provided with an inclined end face, the inclination angle of the inclined end face is 16 degrees, and the diameter of the empty avoiding groove is more than or equal to 75 mm; the closed cavity is provided with the mounting cover plate, the mounting cover plate is respectively provided with the oil inlet and the oil discharge port, the clearance groove is provided with an output through hole, and the output through hole is communicated with the oil inlet; the inner wall of the double-layer shell is provided with a reinforcing rib, and the double-layer shell wraps the closed cavity through the reinforcing rib.
Preferably, in the hydraulic pump casing, a chamfer angle of 150 ° is formed between the double-layer casing and the closed cavity.
Preferably, in the hydraulic pump casing described above, the mounting cover plate is provided with at least one bolt hole.
A machine core adopts the hydraulic pump shell, which comprises a spline main shaft, a plunger rod, a cylinder body, an oil distribution disc, a central shaft, a bearing part and a connecting screw rod; the oil distribution disc is provided with a first connecting hole; the cylinder body is provided with a second connecting hole and a bolt through hole respectively; the spline spindle is provided with a connecting seat, and the connecting seat is provided with a first connecting groove and a second connecting groove respectively; one end of the central shaft is provided with a mounting groove, the other end of the central shaft is movably connected with the second connecting groove, a threaded hole is formed in the mounting groove, and the output end of the connecting screw penetrates through the first connecting hole and the second connecting hole and is finally in threaded connection with the threaded hole; one end of the plunger rod is movably connected with the bolt through hole, the other end of the plunger rod is rotatably connected with the first connecting groove, and the bearing piece is in interference fit with the spline main shaft.
Preferably, the movement further comprises a movable groove and a rotating sleeve ring, the movable groove is axially arranged along the outer wall of the plunger rod, the rotating sleeve ring is sleeved inside the movable groove, and the rotating sleeve ring is matched with the movable groove.
Preferably, in the above movement, the bearing element includes a first outer ring, a first inner ring, a first roller pin, a second outer ring, a second inner ring and a second roller pin, an outer wall of the first inner ring is provided with a first tapered raceway, the first tapered raceway is circumferentially arranged along an outer wall of the first inner ring, an inner wall of the first outer ring is obliquely provided with the first roller pin, and the first roller pin is connected with the first tapered raceway in a sliding fit manner; the outer wall of the second inner ring is provided with a second tapered raceway, the second tapered raceway is arranged along the circumferential direction of the outer wall of the second inner ring, the inner wall of the second outer ring is obliquely provided with the second roller pins, and the second roller pins are connected with the second tapered raceway in a sliding fit manner.
Preferably, in the above-mentioned movement, the bearing member further includes a clamping assembly, the clamping assembly is composed of a clamping hole and a clamping key, the clamping key is disposed on the side wall of the first inner ring, the clamping hole is disposed on the side wall of the second inner ring, and the clamping hole is correspondingly clamped with the clamping key.
The invention has the beneficial effects that:
(1) the reinforcing ribs arranged on the inner wall of the double-layer shell wrap the closed cavity of the double-layer shell through the reinforcing ribs, so that the noise generated by the pump body in the motion process can be effectively reduced; because keep away the dead slot and be equipped with the output through-hole to thereby output through-hole and the design of oil inlet intercommunication when a hydraulic pump can not satisfy the demand, can realize increasing the purpose of power through keeping away the dead slot rather than assembling by a hydraulic pump more.
(2) Because the closed cavity is provided with the inclined end face, the design can reduce the weight of the whole pump body shell, so that the pump body is lighter, the material of the pump body shell can be saved, and the processing cost is reduced.
Drawings
FIG. 1 is a schematic structural diagram of one embodiment of the present invention;
FIG. 2 is a schematic structural diagram of another embodiment of the present invention;
FIG. 3 is an exploded view of FIG. 2;
FIG. 4 is a schematic view of the structure of the central shaft;
FIG. 5 is a schematic structural view of a spline spindle;
FIG. 6 is a schematic structural view of the first inner ring and the second inner ring after being assembled with the spline spindle;
fig. 7 is a schematic view of the structure of the bearing member.
Wherein: the oil-gas separation device comprises a double-layer shell 10, a closed cavity 101, reinforcing ribs 102, an oil inlet 103, an oil discharge port 104, a clearance groove 105, an installation cover plate 106, an inclined end face 107 and an installation cover plate 108;
the connecting structure comprises a spline main shaft 11, a plunger rod 12, a cylinder body 13, an oil distribution disc 14, a central shaft 15, a bearing piece 16, a connecting screw 17, a first connecting hole 18, a second connecting hole 19, a bolt through hole 20, a connecting seat 21, a first connecting groove 22, a second connecting groove 23, a mounting groove 24, a threaded hole 25, a movable groove 26 and a rotating lantern ring 27;
the first outer ring 28, the first inner ring 29, the first roller 30, the first tapered raceway 31, the second inner ring 32, the second tapered raceway 33, the clamping assembly 34, the clamping hole 35 and the clamping key 36.
Detailed Description
Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to the same or similar elements or elements having the same or similar function throughout. The embodiments described below with reference to the accompanying drawings are illustrative only for the purpose of explaining the present invention, and are not to be construed as limiting the present invention.
In the description of the present invention, it is to be understood that the terms "longitudinal," "lateral," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," and the like are used in the orientation or positional relationship indicated in the drawings for convenience in describing the present invention and for simplicity in description, and are not intended to indicate or imply that the referenced devices or components must have a particular orientation, be constructed in a particular orientation, and be operated in a particular manner, and are not to be considered limiting. Furthermore, features defined as "first" and "second" may explicitly or implicitly include one or more of the features for distinguishing between descriptive features, non-sequential, non-trivial and non-trivial.
In the description of the present invention, it should be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.
In the description of the present invention, "a plurality" means two or more unless otherwise specified.
As shown in fig. 1 to 7, a hydraulic pump casing comprises a double-layer casing 10, a closed cavity 101, a reinforcing rib 102, an oil inlet 103, an oil discharge port 104, a clearance groove 105 and an installation cover plate 106, and is characterized in that: the closed cavity 101 is arranged in the middle of the inner cavity of the double-layer shell 10, the tail end of the inner part of the double-layer shell 10 is provided with an empty avoiding groove 105, the middle of the inner cavity of the double-layer shell 10 is provided with the closed cavity 101, the closed cavity 101 is provided with an inclined end face 107, the inclination angle of the inclined end face 107 is 16 degrees, and the diameter of the empty avoiding groove 105 is more than or equal to 75 mm; the closed cavity 101 is provided with an installation cover plate 108, the installation cover plate 108 is respectively provided with an oil inlet 103 and an oil discharge port 104, the clearance groove 105 is provided with an output through hole, and the output through hole is communicated with the oil inlet; the inner wall of the double-layer shell 10 is provided with a reinforcing rib 102, and the closed cavity 101 of the double-layer shell 10 is wrapped by the reinforcing rib 102; wherein a chamfer angle of 150 degrees is generated between the double-layer shell 10 and the closed cavity 101; wherein the mounting cover plate 106 is provided with at least one bolt hole, so as to be assembled with the movement subsequently; the closed cavity 101 of the double-layer shell 10 is wrapped by the reinforcing ribs 102 through the reinforcing ribs arranged on the inner wall of the double-layer shell, so that the noise generated by the pump body in the motion process can be effectively reduced; because keep away empty groove 105 and be equipped with the output through-hole, thereby output through-hole and the design of oil inlet 103 intercommunication when a hydraulic pump can not satisfy the demand, can be more a hydraulic pump through keep away empty groove 105 rather than assemble the purpose that realizes increaseing power, need explain, keep away the diameter of empty groove 105 and be greater than 75mm, such design is convenient for increase the hydraulic pump, it is worth explaining, because closed chamber 101 is equipped with inclined end face 107, the weight of whole pump body shell can be reduced to such design, make the pump body lighter and more handy, and can save the material of pump body shell, thereby reduce the processing cost.
A movement comprises the hydraulic pump shell, wherein the hydraulic pump shell comprises a spline main shaft 11, a plunger rod 12, a cylinder body 13, an oil distribution disc 14, a central shaft 15, a bearing piece 16 and a connecting screw rod 17; the oil distribution pan 14 is provided with a first connection hole 18; the cylinder body 13 is respectively provided with a second connecting hole 19 and a bolt through hole 20; the spline spindle 11 is provided with a connecting seat 21, and the connecting seat 21 is respectively provided with a first connecting groove 22 and a second connecting groove 23; one end of the central shaft 15 is provided with a mounting groove 24, the other end of the central shaft 15 is movably connected with a second connecting groove 23, a threaded hole 25 is arranged inside the mounting groove 24, and the output end of the connecting screw 17 penetrates through the first connecting hole 18 and the second connecting hole 19 and is finally in threaded connection with the threaded hole 25; one end of the plunger rod 12 is movably connected with the bolt through hole 20, the other end of the plunger rod 12 is rotatably connected with the first connecting groove 22, and the bearing piece 16 is in interference fit with the spline main shaft 11; because the central shaft 15 is provided with the mounting groove 24 and the threaded hole 25 is arranged in the mounting groove 24, when the cylinder body is assembled, the connecting end of the connecting screw 17 sequentially passes through the first connecting hole 18 of the oil distribution disc 14 and the second connecting hole 19 of the cylinder body 13 and then extends to the inside of the mounting groove 24 through the connecting end of the connecting screw 17 to be in threaded fit connection with the threaded hole 25, and therefore the strain condition of the cylinder body 13 and the central shaft 15 can be effectively improved through the design; in addition, the central shaft 15 in the mandrel does not need to be provided with an external thread at the tail part of the central shaft 15, so that the purpose of assembling is achieved without lengthening the central shaft 15, the design improves the universality of the central shaft 15 under the condition of not influencing the assembling speed, and the whole core is more convenient to assemble.
The movement in this embodiment further includes a movable groove 26 and a rotating collar 27, the movable groove 26 is axially disposed along the outer wall of the plunger rod 12, the rotating collar 27 is sleeved inside the movable groove 26, and the rotating collar 27 is matched with the movable groove 26; because the outer wall of the plunger rod 12 is provided with the movable groove 26, the movable groove 26 is movably sleeved with the rotating collar 27, the purpose of rotating the plunger rod 12 can be achieved through the design, the material for manufacturing the shaft sleeve is saved through the design, and the manufacturing cost of the plunger rod 12 is reduced.
In the movement in the present embodiment, the bearing 16 includes a first outer ring 28, a first inner ring 29, a first roller pin 30, a second outer ring, a second inner ring 32 and a second roller pin, the outer wall of the first inner ring 29 is provided with a first tapered raceway 31, the first tapered raceway 31 is circumferentially arranged along the outer wall of the first inner ring 29, the inner wall of the first outer ring 28 is obliquely provided with the first roller pin 30, and the first roller pin 30 is connected with the first tapered raceway 31 in a sliding fit manner; the outer wall of the second inner ring 32 is provided with a second tapered raceway 33, the second tapered raceway 33 is arranged along the circumferential direction of the outer wall of the second inner ring 32, the inner wall of the second outer ring is obliquely provided with a second roller pin, and the second roller pin is connected with the second tapered raceway 33 in a sliding fit manner; it should be noted that the bearing member 16 further includes a clamping assembly 34, the clamping assembly 34 is composed of a clamping hole 35 and a clamping key 36, the clamping key 36 is disposed on a side wall of the first inner ring 29, the clamping hole 35 is disposed on a side wall of the second inner ring 32, and the clamping hole 35 is correspondingly clamped with the clamping key 36; because the lateral wall of first inner ring 29 is equipped with card key 36, the lateral wall of second inner ring 32 is equipped with card hole 35, when expanding the front end space, only need with first inner ring 29 backward movement, through card key 36 with card hole 35 joint can, when needing to expand the rear end space, move second inner ring 32 forward, through card key 36 rather than card hole 35 joint can equally, make bearing spare 16 can freely adjust like this, thereby under the circumstances that does not reduce operating power, save unnecessary space, alleviate the burden of spline main shaft 11, and let bearing spare 16 not receive the restriction of model pump case, can assemble with the pump machine of arbitrary model.
A cartridge in some embodiments, wherein the oil distribution pan 14 is provided with at least one bolt hole; such a design facilitates subsequent assembly of the oil distribution pan 14 with the pump housing.
The technical principle of the present invention is described above in connection with specific embodiments. The description is made for the purpose of illustrating the principles of the invention and should not be construed in any way as limiting the scope of the invention. Other embodiments of the present invention will occur to those skilled in the art without the exercise of inventive faculty, and are intended to fall within the scope of the invention.
Claims (8)
1. The utility model provides a hydraulic pump case, includes double-deck shell, closed chamber, strengthening rib, oil inlet, unloads the hydraulic fluid port, keeps away dead slot and installation apron, its characterized in that: the closed cavity is arranged in the middle of the inner cavity of the double-layer shell,
the tail end of the inner part of the double-layer shell is provided with an empty avoiding groove, the middle part of the inner cavity of the double-layer shell is provided with the closed cavity, the closed cavity is provided with an inclined end face, the inclination angle of the inclined end face is 16 degrees, and the diameter of the empty avoiding groove is more than or equal to 75 mm;
the closed cavity is provided with the mounting cover plate, the mounting cover plate is respectively provided with the oil inlet and the oil discharge port, the clearance groove is provided with an output through hole, and the output through hole is communicated with the oil inlet;
the inner wall of the double-layer shell is provided with a reinforcing rib, and the double-layer shell wraps the closed cavity through the reinforcing rib.
2. The hydraulic pump housing of claim 1, wherein: a chamfer angle of 150 degrees is formed between the double-layer shell and the closed cavity.
3. The hydraulic pump housing of claim 1, wherein: the mounting cover plate is provided with at least one bolt hole.
4. A movement employing a hydraulic pump housing according to any one of claims 1 to 3.
5. The cartridge of claim 4, wherein: the oil distribution disc comprises a spline main shaft, a plunger rod, a cylinder body, an oil distribution disc, a central shaft, a bearing piece and a connecting screw rod;
the oil distribution disc is provided with a first connecting hole;
the cylinder body is provided with a second connecting hole and a bolt through hole respectively;
the spline spindle is provided with a connecting seat, and the connecting seat is provided with a first connecting groove and a second connecting groove respectively;
one end of the central shaft is provided with a mounting groove, the other end of the central shaft is movably connected with the second connecting groove, a threaded hole is formed in the mounting groove, and the output end of the connecting screw penetrates through the first connecting hole and the second connecting hole and is finally in threaded connection with the threaded hole;
one end of the plunger rod is movably connected with the bolt through hole, the other end of the plunger rod is rotatably connected with the first connecting groove, and the bearing piece is in interference fit with the spline main shaft.
6. The cartridge of claim 4, wherein: still include activity groove and rotate the lantern ring, the activity groove is followed the outer wall axial of plunger rod sets up, it locates to rotate the lantern ring cover activity inslot portion, rotate the lantern ring with activity groove looks adaptation.
7. The cartridge of claim 5, wherein: the bearing piece comprises a first outer ring, a first inner ring, a first roller pin, a second outer ring, a second inner ring and a second roller pin, wherein a first conical raceway is arranged on the outer wall of the first inner ring and is arranged along the circumferential direction of the outer wall of the first inner ring, the first roller pin is obliquely arranged on the inner wall of the first outer ring, and the first roller pin is connected with the first conical raceway in a sliding fit manner;
the outer wall of the second inner ring is provided with a second tapered raceway, the second tapered raceway is arranged along the circumferential direction of the outer wall of the second inner ring, the inner wall of the second outer ring is obliquely provided with the second roller pins, and the second roller pins are connected with the second tapered raceway in a sliding fit manner.
8. The cartridge of claim 6, wherein: the bearing part further comprises a clamping assembly, the clamping assembly is composed of a clamping hole and a clamping key, the clamping key is arranged on the side wall of the first inner ring, the clamping hole is arranged on the side wall of the second inner ring, and the clamping hole corresponds to the clamping key in a clamping mode.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210008470.7A CN114320806A (en) | 2022-01-06 | 2022-01-06 | Hydraulic pump shell and machine core using same |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210008470.7A CN114320806A (en) | 2022-01-06 | 2022-01-06 | Hydraulic pump shell and machine core using same |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN114320806A true CN114320806A (en) | 2022-04-12 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202210008470.7A Pending CN114320806A (en) | 2022-01-06 | 2022-01-06 | Hydraulic pump shell and machine core using same |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN114320806A (en) |
Citations (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH07167044A (en) * | 1993-12-17 | 1995-07-04 | Uchida Yuatsu Kiki Kogyo Kk | Cylinder block engaging device for swash plate type piston pump motor |
| JPH10131846A (en) * | 1996-10-31 | 1998-05-19 | Sumitomo Eaton Kiki Kk | Swash plate axial piston pump/motor |
| CN102434415A (en) * | 2011-12-02 | 2012-05-02 | 浙江大学 | Low-noise axial plunger pump based on indexing angle of pumps in series |
| CN102996387A (en) * | 2011-09-15 | 2013-03-27 | 林德材料处理有限责任公司 | Axial piston machine |
| CN203114547U (en) * | 2013-02-01 | 2013-08-07 | 重庆祥云机械制造有限公司 | Valve control axial plunger pump |
| CN103452787A (en) * | 2013-08-19 | 2013-12-18 | 山东常林机械集团股份有限公司 | Novel axial plunger pump for hydraulic excavator |
| CN104736846A (en) * | 2012-10-15 | 2015-06-24 | 日立建机株式会社 | Hydraulic rotary machine |
| EP3309393A1 (en) * | 2016-10-12 | 2018-04-18 | Linde Hydraulics GmbH & Co. KG | Hydrostatic fluid displacement machine |
| CN108431438A (en) * | 2015-12-25 | 2018-08-21 | 株式会社捷太格特 | Bearing arrangement |
| CN210218084U (en) * | 2019-04-03 | 2020-03-31 | 江油立航金属材料有限公司 | Noise-reducing pump shell |
| CN112483342A (en) * | 2020-12-10 | 2021-03-12 | 山东泰丰智能控制股份有限公司 | Compact high-efficient type pump of sound bars is inhaled in area |
-
2022
- 2022-01-06 CN CN202210008470.7A patent/CN114320806A/en active Pending
Patent Citations (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH07167044A (en) * | 1993-12-17 | 1995-07-04 | Uchida Yuatsu Kiki Kogyo Kk | Cylinder block engaging device for swash plate type piston pump motor |
| JPH10131846A (en) * | 1996-10-31 | 1998-05-19 | Sumitomo Eaton Kiki Kk | Swash plate axial piston pump/motor |
| CN102996387A (en) * | 2011-09-15 | 2013-03-27 | 林德材料处理有限责任公司 | Axial piston machine |
| CN102434415A (en) * | 2011-12-02 | 2012-05-02 | 浙江大学 | Low-noise axial plunger pump based on indexing angle of pumps in series |
| CN104736846A (en) * | 2012-10-15 | 2015-06-24 | 日立建机株式会社 | Hydraulic rotary machine |
| CN203114547U (en) * | 2013-02-01 | 2013-08-07 | 重庆祥云机械制造有限公司 | Valve control axial plunger pump |
| CN103452787A (en) * | 2013-08-19 | 2013-12-18 | 山东常林机械集团股份有限公司 | Novel axial plunger pump for hydraulic excavator |
| CN108431438A (en) * | 2015-12-25 | 2018-08-21 | 株式会社捷太格特 | Bearing arrangement |
| EP3309393A1 (en) * | 2016-10-12 | 2018-04-18 | Linde Hydraulics GmbH & Co. KG | Hydrostatic fluid displacement machine |
| CN210218084U (en) * | 2019-04-03 | 2020-03-31 | 江油立航金属材料有限公司 | Noise-reducing pump shell |
| CN112483342A (en) * | 2020-12-10 | 2021-03-12 | 山东泰丰智能控制股份有限公司 | Compact high-efficient type pump of sound bars is inhaled in area |
Non-Patent Citations (2)
| Title |
|---|
| 刘静华 等: "《工程图学基础》", 30 September 2020, 北京航空航天大学出版社, pages: 122 * |
| 王鹰宇: "《分析用户手册—介绍、空间建模、执行与输出卷》", 31 January 2021, 机械工业出版社, pages: 87 * |
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