CN111963402A - Multi-cylinder reciprocating motion power end integrated with disc type motor - Google Patents
Multi-cylinder reciprocating motion power end integrated with disc type motor Download PDFInfo
- Publication number
- CN111963402A CN111963402A CN202010810119.0A CN202010810119A CN111963402A CN 111963402 A CN111963402 A CN 111963402A CN 202010810119 A CN202010810119 A CN 202010810119A CN 111963402 A CN111963402 A CN 111963402A
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- China
- Prior art keywords
- shell
- connecting rod
- bearing
- cylinder reciprocating
- power end
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- 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.)
- Pending
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Classifications
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- 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
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- 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
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- 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
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- 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
- F04B53/006—Crankshafts
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- 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
- F04B53/16—Casings; Cylinders; Cylinder liners or heads; Fluid connections
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- 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
- F04B53/22—Arrangements for enabling ready assembly or disassembly
Abstract
The invention discloses a multi-cylinder reciprocating motion power end integrated with a disc type motor, which comprises a shell, a crankshaft rotationally connected with the shell and a plurality of disc type motor units arranged in the shell at intervals, wherein each disc type motor unit comprises a stator set and a rotor set, the stator sets are fixedly connected with the shell, and the rotor sets are sleeved on the cranks of the crankshaft in a hot manner; all be provided with an output unit between two arbitrary adjacent disk motor units, output unit includes connecting rod, linear bearing and sets up the slide on the shell, and linear bearing links firmly with the slide, and the connecting rod is connected with the cross head, cross head and linear bearing sliding fit, and linear bearing's one end and the crank of bent axle are kept away from to the connecting rod rotate and are connected. The multi-cylinder reciprocating motion power end integrated with the disc type motor can meet the power torque requirement required by multi-cylinder reciprocating motion.
Description
Technical Field
The invention relates to the technical field of general machinery, in particular to a multi-cylinder reciprocating motion power end integrated with a disc type motor.
Background
The reciprocating motion power end is a general machine for converting rotary motion into reciprocating motion, and is widely applied to general mechanical equipment such as a motor reciprocating pump, a reciprocating air compressor and the like. At present, a common motor provides source power at a power end of reciprocating motion, the power is transmitted to a crankshaft through a speed reducing device (a belt wheel, a speed reducer and the like), and the reciprocating motion is realized by a crankshaft connecting rod mechanism. The problems of large volume, low efficiency, lubricating oil leakage, potential safety hazard and the like exist.
Chinese patent CN201410446362.3 integrated radial plunger pump of a permanent magnet disc type motor driven double-row plunger and Chinese patent CN201310139370.9 integrated outer rotor radial plunger hydraulic pump with a motor belong to the category of radial plunger hydraulic pumps, and a disc type motor is arranged at one end or two ends of a rotating shaft. For reciprocating power ends with multiple cylinders arranged in parallel at the same time, such as power ends of a motorized reciprocating pump, the above driving mode is difficult to meet the power torque requirement required by the reciprocating motion of the multiple cylinders.
How to reduce the volume of the reciprocating motion power end, increase the strength, simplify the structure, improve the efficiency, and avoid oil leakage and potential safety hazard becomes the problem that must be solved.
Disclosure of Invention
The invention aims to provide a multi-cylinder reciprocating motion power end integrated with a disc type motor, which aims to solve the problems in the prior art and meet the power torque requirement required by multi-cylinder reciprocating motion.
In order to achieve the purpose, the invention provides the following scheme:
the invention provides a multi-cylinder reciprocating motion power end integrated with a disc type motor, which comprises a shell, a crankshaft rotationally connected with the shell and a plurality of disc type motor units arranged in the shell at intervals, wherein each disc type motor unit comprises a stator group and a rotor group, the stator groups are fixedly connected with the shell, and the rotor groups are sleeved on the cranks of the crankshaft in a hot manner; any two adjacent disc type motor units are provided with an output unit, the output unit comprises a connecting rod, a linear bearing and a slide way arranged on the shell, the linear bearing is fixedly connected with the slide way, the connecting rod is connected with a cross head, the cross head is in sliding fit with the linear bearing, and one end, far away from the linear bearing, of the connecting rod is rotatably connected with a crank throw of the crankshaft.
Preferably, correspond on the inner wall of shell stator group is provided with the baffle circle, the baffle circle through solid fixed ring with stator group links firmly, will through a plurality of fixed pin the baffle circle solid fixed ring reaches stator group is fixed as an organic whole, the baffle circle gu fixed ring reaches stator group equally divide do not with arbitrary one the fixed pin contact.
Preferably, the connecting rod is including the connecting rod microcephaly, the connecting rod body and the connecting rod lid that connect gradually, the connecting rod microcephaly pass through the cross head round pin with the cross head is connected, the connecting rod microcephaly adopts the sealed rod end joint bearing in both ends.
Preferably, the connecting rod body is in threaded connection with the small end of the connecting rod.
Preferably, the connecting rod cover is rotatably connected with the crank throw through a big end bearing, and the big end bearing is a split bearing with two split ends sealed by oil seals.
Preferably, the two ends of the crankshaft are respectively in running fit with the shell through a crankshaft bearing, a bearing sleeve is further arranged between the crankshaft bearing and the shell, and the bearing sleeve is fixedly connected with the shell through a bolt.
Preferably, the shell is provided with a left end cover, a right end cover and a rear cover, the left end cover and the right end cover are connected with the shell through a plurality of screw rods, each screw rod penetrates through the left end cover, the shell and the right end cover, and the rear cover is detachably connected with the shell through a bolt.
Preferably, a front sealing ring is arranged at the front end of the linear bearing, and a rear sealing ring is arranged at the rear end of the linear bearing.
Compared with the prior art, the invention has the following technical effects:
the multi-cylinder reciprocating motion power end integrated with the disc type motor can meet the power torque requirement required by multi-cylinder reciprocating motion. The invention discloses a multi-cylinder reciprocating motion power end integrated with a disc motor, wherein a plurality of disc motor stator groups are fixed on a crankshaft crank, a plurality of disc motor stator groups are fixed on a shell, and when the multi-cylinder reciprocating motion power end is electrified, the disc motor stator groups and the crankshaft rotate integrally, and a cross head is driven to reciprocate through a connecting rod. The big end bearing adopts a split bearing with two ends sealed by split oil seals, and the small end of the connecting rod adopts a rod end joint bearing with two ends sealed. And the linear bearing is arranged in the shell slideway, the front sealing ring and the rear sealing ring are arranged on the linear bearing, and lubricating oil does not need to be filled in the reciprocating motion power end integrated with the disc type motor, so that oil-free lubrication is realized, and the leakage of the lubricating oil is avoided. The multi-cylinder reciprocating motion power end integrated with the disc type motor has a simple structure, simultaneously increases the strength of a crankshaft, reduces the volume, improves the efficiency, and really achieves high efficiency, safety, simplicity and reliability.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings needed in the embodiments will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings without creative efforts.
FIG. 1 is a first structural schematic diagram of a multi-cylinder reciprocating power end integrated with a disc motor according to the present invention;
FIG. 2 is a schematic structural diagram II of a multi-cylinder reciprocating power end integrated with a disc motor according to the present invention;
FIG. 3 is a partial schematic structural view of a multi-cylinder reciprocating power end integrated with a disc motor according to the present invention;
wherein: 1. a left end cap; 101. a right end cap; 2. a stator group; 3. a group of animals; 4. a housing; 401. a slideway; 402. a separator circle; 5. positioning pins; 6. a screw; 7. a crankshaft; 701. a crank; 8. a bearing housing; 9. a crankshaft bearing; 10. a big head bearing; 11. a connecting rod; 111. a connecting rod cover; 112. a connecting rod body; 12. a crosshead; 121. a crosshead pin; 13. a small end of the connecting rod; 14. a linear bearing; 15. a front seal ring; 151. a rear seal ring; 16. a fixing ring; 17. and (7) a rear cover.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be obtained by a person skilled in the art without inventive effort based on the embodiments of the present invention, are within the scope of the present invention.
The invention aims to provide a multi-cylinder reciprocating motion power end integrated with a disc type motor, which aims to solve the problems in the prior art and meet the power torque requirement required by multi-cylinder reciprocating motion.
In order to make the aforementioned objects, features and advantages of the present invention comprehensible, embodiments accompanied with figures are described in further detail below.
As shown in fig. 1 to 3: this embodiment provides a multi-cylinder reciprocating motion power end with disc motor integration, including shell 4, bent axle 7 and four interval settings disk motor unit in shell 4 of being connected with shell 4 rotation, be provided with left end lid 1 on the shell 4, right-hand member lid 101 and back lid 17, left end lid 1, right-hand member lid 101 is connected with the shell through a plurality of screw rod 6, every screw rod 6 all passes left end lid 1, shell 4 and right-hand member lid 101, back lid 17 can dismantle with shell 4 through the bolt and be connected, bent axle 7's both ends are respectively through a bent axle bearing 9 and shell 4 normal running fit, still be provided with bearing housing 8 between bent axle bearing 9 and the shell 4, bearing housing 8 links firmly with shell 4 through the bolt.
The disc type motor unit comprises a stator group 2 and a rotor group 3, the stator group 2 is fixedly connected with the shell 4, and the rotor group 3 is sleeved on a crank 701 of a crankshaft 7 in a hot mode; an output unit is arranged between any two adjacent disk type motor units and comprises a connecting rod 11, a linear bearing 14 and a slide way 401 arranged on the shell 4, the linear bearing 14 is in sliding fit with the slide way 401, a front sealing ring 15 is arranged at the front end of the linear bearing 14, and a rear sealing ring 151 is arranged at the rear end of the linear bearing 14. The connecting rod 11 is fixedly connected with the crosshead 12, the crosshead 12 is in sliding fit with the linear bearing 14, and one end of the connecting rod 11, which is far away from the linear bearing 14, is rotatably connected with the crank throw of the crankshaft 7.
The inner wall of the shell 4 is provided with a partition circle 402 corresponding to the stator group 2, the partition circle 402 is fixedly connected with the stator group 2 through a fixing ring 16, the partition circle 402, the fixing ring 16 and the stator group 2 are fixed into a whole through a plurality of fixing pins, and the partition circle 402, the fixing ring 16 and the stator group 2 are uniformly contacted with any one fixing pin.
The link 11 includes a link small end 13, a link body 112, and a link cover 111 connected in this order, and the link small end 13 is connected to the crosshead 12 by a crosshead pin 121. The connecting rod body 112 is in threaded connection with the small connecting rod head 13, the small connecting rod head 13 is a rod end joint bearing with two sealed ends, and the two ends of the small connecting rod head 13 are oil sealed, so that lubricating grease in the rod end joint bearing can be prevented from being leaked, and the lubricating grease is prevented from being leaked to influence the work of the disc motor. The connecting rod cover 111 is rotatably connected with the crank throw through a big end bearing 10, and the big end bearing 10 adopts a split bearing with two split ends sealed by oil seals.
The assembling process of the multi-cylinder reciprocating motion power end integrated with the disc type motor in the embodiment is as follows:
firstly, sleeving two fixing rings 16 into two partition plate circles 402 at the middles of a shell 4, then installing two groups of disc type motor stator groups 2 into the fixing rings 16, fixing the shell 4, the fixing rings 16 and the disc type motor stator groups 2 into a whole by using a plurality of positioning pins 5, penetrating a crankshaft 7 into the fixing rings, and respectively sleeving the disc type motor stator groups 3 on a crank 701 circle of the crankshaft 7 from the left side and the right side of the shell 4 in a hot sleeving manner; then the left end cover 1 and the right end cover 101 are respectively arranged in the shell 4, tightened and fixed by the screw 6, and then the crankshaft bearing 9 and the bearing box are respectively connected with the left end cover 1, the right end cover 101 and the crankshaft 7. Then the linear bearing 14 with the front sealing ring 15 and the rear sealing ring 151 is arranged in the slideway 401 of the shell 4 from the front end of the shell 4, the crosshead 12 and the connecting rod small end 13 are connected through the crosshead pin 121 and are arranged in the inner hole of the linear bearing 14, the connecting rod body 112 penetrates through the crankshaft 7 from the rear cover 17 and is arranged in the neutral position between the crankshaft 7 and the slideway 401 of the shell 4 and is fastened with the connecting small end through screw threads, the connecting rod 11 big end bearing 10 is arranged on the crank throw of the crankshaft 7, the connecting rod cover 111 is connected with the connecting rod body 112, and the rear cover 17 is covered. In order to avoid the influence of lubricating oil on the motor coil and the like, lubricating oil is not filled in the reciprocating motion power end integrated with the disc type motor. All the bearings are sealed bearings, and the grease inside the bearings cannot leak.
When the disc type motor stator group 2 and the disc type motor stator group 3 are powered on, the disc type motor stator group 3 and the crankshaft 7 rotate together, the crankshaft 7 drives the connecting rod 11 to drive the crosshead 12 to reciprocate on the linear bearing 14, the crosshead 12 is connected with external equipment, and the crosshead 12 drives the external equipment to move.
When the multi-cylinder reciprocating motion power end integrated with the disc motor works, under the action of electromagnetic force, the disc motor stator group 2 fixed on the shell 4 and the disc motor stator group 3 fixed on the crank 701 circle of the crankshaft 7 are equivalent to a plurality of groups of magnetic bearings which are arranged on a plurality of crank 701 circles of the crankshaft 7 to support the crankshaft 7, so that the crankshaft 7 is of a multi-crank multi-support structure, and the strength of the crankshaft 7 is inevitably increased. On the contrary, on the premise that the stress of the crankshaft 7 is the same, the size of the crankshaft 7 can be relatively reduced, so that the multi-cylinder reciprocating motion power end integrated with the disc type motor is more compact in structure, and the purpose of reducing the volume is achieved, meanwhile, the middle of the shell 4 is provided with a plurality of partition plate circles 402, the strength of the shell 4 is also increased, and the purpose of reducing the volume is also achieved. Compared with the traditional reciprocating motion power end driven by source power, the multi-cylinder reciprocating motion power end integrated with the disc type motor in the embodiment embeds power, reduces the volume of the power end, increases the strength of the power end, embeds the transmission devices such as the connecting rod 11 in the shell, avoids the influence possibly caused by the external environment on the motion of the connecting rod 11 and the like, and ensures the operation safety. The crankshaft bearing 9 and the motor bearing are integrated, and the shell 4, the left end cover 1 and the right end cover 101 are integrated with the motor shell and the end covers, so that the structure is greatly simplified. The intermediate speed reduction transmission link is reduced, the cost is reduced, the efficiency is improved, unsafe factors are avoided, and the device is safe, efficient, energy-saving and reliable.
It should be noted that the multi-cylinder reciprocating power end integrated with the disc motor in this embodiment is only a three-cylinder reciprocating power end, and if a five-cylinder reciprocating power end, a seven-cylinder reciprocating power end, or a reciprocating power end with more cylinders needs to be provided, only the specific number of the disc motor units and the output units in the multi-cylinder reciprocating power end integrated with the disc motor in this embodiment needs to be adaptively adjusted. It is within the scope of the present invention to add or delete or obviously replace individual components based on the same basic principle of the present invention.
In the description of the present invention, it should be noted that the terms "inside", "outside", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, which are only for convenience in describing the present invention and simplifying the description, but do not indicate or imply that the referred device or element must have a specific orientation, be constructed in a specific orientation, and operate, and thus, should not be construed as limiting the present invention.
The principle and the implementation mode of the present invention are explained by applying specific examples in the present specification, and the above descriptions of the examples are only used to help understanding the method and the core idea of the present invention; meanwhile, for a person skilled in the art, according to the idea of the present invention, the specific embodiments and the application range may be changed. In view of the above, the present disclosure should not be construed as limiting the invention.
Claims (8)
1. The utility model provides a multi-cylinder reciprocating motion power end with disc motor integration which characterized in that: the disc type motor unit comprises a stator group and a rotor group, wherein the stator group is fixedly connected with the shell, and the rotor group is sleeved on a crank of the crankshaft in a hot manner; any two adjacent disc type motor units are provided with an output unit, the output unit comprises a connecting rod, a linear bearing and a slide way arranged on the shell, the linear bearing is fixedly connected with the slide way, the connecting rod is connected with a cross head, the cross head is in sliding fit with the linear bearing, and one end, far away from the linear bearing, of the connecting rod is rotatably connected with a crank throw of the crankshaft.
2. The multi-cylinder reciprocating power end integrated with a disc motor of claim 1, characterized in that: correspond on the inner wall of shell the stator group is provided with the baffle circle, the baffle circle through solid fixed ring with the stator group links firmly, will through a plurality of fixed pin the baffle circle solid fixed ring reaches the stator group is fixed as an organic whole, the baffle circle gu fixed ring reaches the stator group is equallyd divide do not with arbitrary one the fixed pin contact.
3. The multi-cylinder reciprocating power end integrated with a disc motor of claim 1, characterized in that: the connecting rod is including the connecting rod microcephaly, the connecting rod body and the connecting rod lid that connect gradually, the connecting rod microcephaly pass through the cross head round pin with the cross head is connected, the connecting rod microcephaly adopts the sealed rod end joint bearing in both ends.
4. The multi-cylinder reciprocating power end integrated with a disc motor of claim 3, characterized in that: the connecting rod body is in threaded connection with the small end of the connecting rod.
5. The multi-cylinder reciprocating power end integrated with a disc motor of claim 3, characterized in that: the connecting rod cover is rotatably connected with the crank throw through a big end bearing, and the big end bearing adopts a split bearing with two split ends sealed by oil seals.
6. The multi-cylinder reciprocating power end integrated with a disc motor of claim 1, characterized in that: the two ends of the crankshaft are respectively in running fit with the shell through a crankshaft bearing, a bearing sleeve is further arranged between the crankshaft bearing and the shell, and the bearing sleeve is fixedly connected with the shell through bolts.
7. The multi-cylinder reciprocating power end integrated with a disc motor of claim 1, characterized in that: the shell is provided with a left end cover, a right end cover and a rear cover, the left end cover and the right end cover are connected with the shell through a plurality of screw rods, each screw rod penetrates through the left end cover, the shell and the right end cover, and the rear cover is detachably connected with the shell through bolts.
8. The multi-cylinder reciprocating power end integrated with a disc motor of claim 1, characterized in that: the front end of the linear bearing is provided with a front sealing ring, and the rear end of the linear bearing is provided with a rear sealing ring.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010810119.0A CN111963402A (en) | 2020-08-13 | 2020-08-13 | Multi-cylinder reciprocating motion power end integrated with disc type motor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010810119.0A CN111963402A (en) | 2020-08-13 | 2020-08-13 | Multi-cylinder reciprocating motion power end integrated with disc type motor |
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| Publication Number | Publication Date |
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| CN111963402A true CN111963402A (en) | 2020-11-20 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202010810119.0A Pending CN111963402A (en) | 2020-08-13 | 2020-08-13 | Multi-cylinder reciprocating motion power end integrated with disc type motor |
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| CN (1) | CN111963402A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2023117320A1 (en) * | 2021-12-22 | 2023-06-29 | Mhwirth Gmbh | Fluid pump, pump assembly and method of pumping fluid |
| CN117552948A (en) * | 2024-01-12 | 2024-02-13 | 山东唐宁专用汽车有限公司 | Electric self-driven fracturing pump and fracturing truck adopting same |
| CN117552948B (en) * | 2024-01-12 | 2024-04-19 | 山东唐宁专用汽车有限公司 | Electric self-driven fracturing pump and fracturing truck adopting same |
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| CN209959726U (en) * | 2019-03-24 | 2020-01-17 | 杭州前进齿轮箱集团股份有限公司 | Marine intermediate shaft adopting split rolling bearing |
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| CN201063565Y (en) * | 2007-08-07 | 2008-05-21 | 郭金财 | Regeneration magnetic energy bent shaft reciprocating engine |
| CN101699091A (en) * | 2009-09-18 | 2010-04-28 | 德阳宏广科技有限公司 | Split bearing pedestal |
| CN102536732A (en) * | 2012-02-29 | 2012-07-04 | 大连亿斯德制冷设备有限公司 | Semi-closed piston refrigeration compressor for ammonia |
| CN103850910A (en) * | 2014-03-16 | 2014-06-11 | 王彦彬 | Same-plane multi-cylinder multi-level cam and bearing combined connecting rod type compressor |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2023117320A1 (en) * | 2021-12-22 | 2023-06-29 | Mhwirth Gmbh | Fluid pump, pump assembly and method of pumping fluid |
| CN117552948A (en) * | 2024-01-12 | 2024-02-13 | 山东唐宁专用汽车有限公司 | Electric self-driven fracturing pump and fracturing truck adopting same |
| CN117552948B (en) * | 2024-01-12 | 2024-04-19 | 山东唐宁专用汽车有限公司 | Electric self-driven fracturing pump and fracturing truck adopting same |
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Application publication date: 20201120 |
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