CN104088890A - Crankshaft for hydraulic cylinder motor with equal distributed angles - Google Patents
Crankshaft for hydraulic cylinder motor with equal distributed angles Download PDFInfo
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- CN104088890A CN104088890A CN201410349676.1A CN201410349676A CN104088890A CN 104088890 A CN104088890 A CN 104088890A CN 201410349676 A CN201410349676 A CN 201410349676A CN 104088890 A CN104088890 A CN 104088890A
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Abstract
The invention belongs to the field of mining hydraulic motors and particularly discloses a crankshaft for a hydraulic cylinder motor with equal distributed angles. The crankshaft for the hydraulic cylinder motor with the equal distributed angles is simple in structure, high in safety coefficient and long in service life, and is capable of converting the linear motion of a hydraulic cylinder to rotating motion. The crankshaft comprises a middle shaft, an output shaft, a tail shaft and first, second and third piston crank connecting devices which are arranged side by side, wherein the second piston crank connecting device is in interference fit with a shaft installing hole in a plywood through the middle shaft, and is fixedly connected with the first and third piston crank connecting device respectively; crank pins of the first, second and third piston crank connecting devices are in 120-degree uniform distribution with the shaft installing hole as the center; the output shaft is fixedly connected with an shaft installing hole in the plywood at the outer side of the first piston crank connecting device and the tail shaft is fixedly connected with a shaft installing hole in the plywood at the outer side of the third piston crank connecting device.
Description
Technical field
The invention belongs to mining hydraulic field of motors, particularly relate to the angle of distribution hydraulic cylinder type motor bent axles such as a kind of.
Background technique
Coal industry is the pillar industry of China, and the safety in coal mining is again the most important thing.Owing to often can there is gas under coal mine, the main component of gas is alkane, and wherein methane accounts for the overwhelming majority; separately there are a small amount of ethane, propane and butane; in addition generally also contain hydrogen sulfide, carbon dioxide, nitrogen and aqueous vapor, and the inert gas of trace, as helium and argon etc.Under the standard condition, methane to butane exists with gaseous state, and pentane is liquid above.As naked light,, there is " gas " blast, the life safety that is directly threatening miner in incendivity.In order to reduce and prevent the generation of hair explosive accident, must be high to the requirement of underground work safety coefficient.
Development along with new and high technology and modern production, the output in colliery is also in rising from year to year, coal mine equipment also just seems even more important for the development in colliery, has become the key factor of a restriction colliery development, and the efficiency of coal mine equipment directly affects the manufacturing efficiency of mine.Therefore the coal mine equipment that develops efficient quick safety is a vital task of China's coal-mine industrial construction.
The common equipment in colliery comprises coal winning machine, flight conveyer, traction locomotive and overhead trolley etc.Wherein coal breaks in coal winning machine Shi Yi rotary work mechanism, and packed into the coal-cutting machinery of conveyor or other haulage devices, the power source of coal winning machine flight conveyer is cable and drives motor to move at working surface, and coal-face exists unsafe factor like this, and risk factor is high.
Current mining underground scraper conveyor, its power system is by driven by motor retarder, retarder drives the sprocket shaft group work of equipment, because sprocket shaft group needs frequent speed governing frequent start-stop, motor frequent start-stop is large to the impact of electrical network, and high pulling torque during start and stop causes very large impact shock to the sprocket shaft group of scraper conveyor, and sprocket shaft group is short working life.
And overhead trolley is owing to not being subject to the impact of base plate condition, its haulage drift arrangement convenience save space and conveying efficiency high.But overhead trolley technology is at home also in developing stage, and monorail crane locomotive is walked hanging on the track at top, tunnel, provides power by diesel engine, rely on running wheel and the walking of interorbital frictional force drives overhead trolley.Diesel engine needs to consume a large amount of diesel oil in the course of the work, and it is discharged a large amount of high temperature hot gas and has potential safety hazard.
Above-mentioned several coal mine machinery, mainly due to power input, adopt traditional motor or diesel engine, this power input mode is not suitable for coal mine machinery equipment and uses, in the process of using at coal mine equipment, can there is very large potential safety hazard, cause under ore deposit staff's safety coefficient higher, therefore the serious restriction of existing power input device the development of colliery downhole equipment.
Summary of the invention
The present invention overcomes the deficiency that prior art exists, technical problem to be solved for provide a kind of simple in structure, safety coefficient is high, long service life and oil hydraulic cylinder straight line motion can be changed into rotation motion etc. angle of distribution hydraulic cylinder type motor bent axle.
In order to solve the problems of the technologies described above, the technical solution used in the present invention is: etc. angle of distribution hydraulic cylinder type motor bent axle, comprise three groups of first piston crank connecting devices that the structure being arranged side by side is identical, the second piston crank connection set, the 3rd piston crank connection set, jack shaft, output shaft and tailing axle, described first, it is circular clamping plate that the second and the 3rd piston crank connection set includes two integral body, the center of described clamping plate is provided with axle mounting hole, on described axle mounting hole clamping plate around, be provided with three and be the equally distributed pin shaft hole of 120 degree, between two clamping plate, by single crank pin, with clamping plate upper pin hole interference fit, two clamping plate are fixedly connected with,
The outer side surface of described clamping plate is provided with cam, described cam is comprised of two concentric waney smaller part annulus and more than half annulus, cam on two clamping plate of each piston crank connection set is reverse setting, and the center line of the smaller part annulus of cam and more than half separatrix of annulus and the center line of crank pin and axle mounting hole is positioned at same plane;
Described the second piston crank connection set is fixedly connected with first piston crank connecting device, the 3rd piston crank connection set respectively with the axle mounting hole interference fit on clamping plate by jack shaft, and the crank pin of first piston crank connecting device, the second piston crank connection set and the 3rd piston crank connection set is 120 degree and is uniformly distributed centered by axle mounting hole;
Described output shaft is fixedly connected with the axle mounting hole of clamping plate outside first piston crank connecting device, and described tailing axle is fixedly connected with the axle mounting hole of clamping plate outside the 3rd piston crank connection set.
Preferably, between described smaller part annulus and more than half annulus, be provided with transition linkage section, described transition linkage section and smaller part annulus and more than half annulus rounding off.Can guarantee that like this roller, when being transitioned into more than half annulus from smaller part annulus, there will not be significantly and beats, thereby affect the stability of whole hydraulic cylinder type motor.
Preferably, between described cam and clamping plate, can adopt screw to add interference fit is connected, also can adopts the one-body molded setting of cam and clamping plate.
Preferably, between described output shaft, tailing axle and axle mounting hole, by key, be connected with interference fit.
The present invention compared with prior art has following beneficial effect.
First, bent axle of the present invention is linked into an integrated entity first, second, and third piston crank connection set by crank pin, crank pin and axle mounting hole are eccentric to be installed, crank pin, oil hydraulic cylinder and bent axle itself just can form a bar linkage structure like this, thereby the straight reciprocating motion of oil hydraulic cylinder is converted into the continuous rotary motion of bent axle.
Second, the crank pin of first, second, and third piston crank connection set is 120 degree and is uniformly distributed centered by axle mounting hole, be connected three oil hydraulic cylinders with three piston crank connection sets and jointly to bent axle, provide power, so just can reduce the amplitude of beating of bent axle output speed and torque, make the output speed of bent axle and torque more steady.
The 3rd, the cam structure that utilization is oppositely arranged and the control system of pure machinery, just can control the to-and-fro motion of oil hydraulic cylinder, other electrical apparatus control system need to do not added, be applicable to using under coal mine, can not increase potential safety hazard, reduced down-hole accident incidence rate.
Accompanying drawing explanation
Below in conjunction with accompanying drawing, the present invention will be further described in detail.
Fig. 1 is the structural representation of hydraulic cylinder type motor.
Fig. 2 is the plan structure schematic diagram of hydraulic cylinder type motor.
Fig. 3 is the structural representation of casing.
Fig. 4 is the structural representation of bent axle.
Fig. 5 is the main TV structure schematic diagram of Fig. 4.
Fig. 6 is the left side structural representation of Fig. 4.
Fig. 7 is the structural representation of cam.
Fig. 8 is the linkage structure schematic diagram of control system and casing front end assemblies.
Fig. 9 is output speed and the turning moment diagram of the bent axle of hydraulic cylinder type motor.
In figure: 1 is casing, 11 is earrings, 12 is oil hydraulic cylinder mounting hole, 13 is casing semicircle seat, 2 is oil hydraulic cylinder, 21 is oil hydraulic cylinder earrings, 22 is hydraulic cylinder piston termination, 23 is piston end skull, 3 is bent axle, 31 is first piston crank connecting device, 311 is clamping plate, 312 is axle mounting hole, 313 is pin shaft hole, 314 is crank pin, 315 is cam, 3151 is smaller part annulus, 3152 is more than half annulus, 3153 is transition linkage section, 32 is the second piston crank connection set, 33 is the 3rd piston crank connection set, 34 is jack shaft, 35 is output shaft, 36 is tailing axle, 4 is casing front end assemblies, 41 is front end body, 42 is casing front end semicircle seat, 43 is jack shaft supporting base, 44 is pilot hole, 45 is guide sleeve, 5 is control system, 51 is first device of kowtowing, 511 for kowtowing on a left side, 512 for kowtowing on the right side, 513 is tappet, 52 is second device of kowtowing, 53 is the 3rd device of kowtowing, 54 is the seat of kowtowing, 55 is spring, 56 is roller, 6 is control valve.
Embodiment
As shown in Fig. 1-Fig. 3, etc. angle of distribution hydraulic cylinder type motor, comprise casing 1, three oil hydraulic cylinders 2, bent axle 3, casing front end assemblies 4, control system 5, described casing 1 integral body is shell construction, the rear end of casing 1 inside is arranged side by side three for the earrings 11 of oil hydraulic cylinder 2 is installed, described earrings 11 is provided with oil hydraulic cylinder mounting hole 12, and the front end of casing 1 is provided with the casing semicircle seat 13 that bent axle 3 is installed, and on described casing semicircle seat 13, is provided with the tapped hole being connected with casing front end assemblies 4; Described casing front end assemblies 4 is fixedly connected with described bent axle 3 fixing with casing 1, described three oil hydraulic cylinder earrings 21 are fixedly connected with the oil hydraulic cylinder mounting hole 12 of casing 1 inside, hydraulic cylinder piston termination 22 is connected by piston end skull 23 with bent axle 3, simultaneously bent axle 3 band autocontrol systems 5 motions that rotate of oil hydraulic cylinder 2 to-and-fro motion band dynamic crankshafts 3, thus the to-and-fro motion that described control system 5 is controlled three oil hydraulic cylinders 2 is done continuous rotation motion with dynamic crankshaft 3.
As Figure 4-Figure 7, described bent axle 3 comprises three groups of first piston crank connecting devices 31 that the structure being arranged side by side is identical, the second piston crank connection set 32, the 3rd piston crank connection set 33, jack shaft 34, output shaft 35 and tailing axle 36, described first, the second and the 3rd piston crank connection set 31, 32, 33 to include two integral body be circular clamping plate 311, described clamping plate 311 center is provided with axle mounting hole 312, on described axle mounting hole 312 clamping plate 311 around, be provided with three and be the equally distributed pin shaft hole 313 of 120 degree, between two clamping plate 311, by single crank pin 314, with clamping plate 311 upper pin hole 313 interference fit, two clamping plate 311 are fixedly connected with,
The outer side surface of described clamping plate 311 is provided with cam 315, described cam 315 is comprised of two concentric waney smaller part annulus 3151 and more than half annulus 3152, cam 315 on two clamping plate 311 of each piston crank connection set is reverse setting, and the center line of the smaller part annulus 3151 of cam 315 and more than half separatrix of annulus 3152 and the center line of crank pin 314 and axle mounting hole 312 is positioned at same plane;
Described the second piston crank connection set 32 is fixedly connected with first piston crank connecting device 31, the 3rd piston crank connection set 33 respectively with axle mounting hole 312 interference fit on clamping plate 311 by jack shaft 34, and the crank pin 314 of first piston crank connecting device 31, the second piston crank connection set 32 and the 3rd piston crank connection set 33 is 120 degree and is uniformly distributed centered by axle mounting hole 312;
Described output shaft 35 is fixedly connected with the axle mounting hole 312 of first piston crank connecting device 31 outside clamping plate, and described tailing axle 36 is fixedly connected with the axle mounting hole 312 of the 3rd piston crank connection set 33 outside clamping plate.
The working procedure of bent axle 3: three oil hydraulic cylinders 2 are connected respectively at the crank pin 314 of first piston crank connecting device 31, the second piston crank connection set 32 and the 3rd piston crank connection set 33, because being 120 degree centered by axle mounting hole 312, the crank pin 314 of first piston crank connecting device 31, the second piston crank connection set 32 and the 3rd piston crank connection set 33 is uniformly distributed, bent axle 3 just can be done continuous rotation motion under the driving of three oil hydraulic cylinders 2 like this, thereby stable rotating speed and torque output can be provided.
Preferably, between described smaller part annulus 3151 and more than half annulus 3152, be provided with transition linkage section 3153, described transition linkage section 3513 and smaller part annulus 3151 and more than half annulus 3152 rounding ofves.
Preferably, between described cam 315 and clamping plate 311, can adopt screw to add interference fit and be connected, also can adopt cam 315 and the one-body molded setting of clamping plate 311.
Preferably, between described output shaft 35, tailing axle 36 and axle mounting hole 312, by key, be connected with interference fit.
As shown in Figure 8, described casing front end assemblies 4 comprises front end body 41, the two ends of described front end body 41 are provided with casing front end semicircle seat 42, on described casing front end semicircle seat 42, be provided with the tapped hole being connected with casing 1, casing front end semicircle seat 42 and casing semicircle seat 13 are threaded the output shaft of bent axle 3 35 and tailing axle 36 is fixing, between described casing front end semicircle seat 42, be arranged side by side jack shaft supporting base 43, described jack shaft supporting base 43 is to opening structure, jack shaft supporting base 43 is fixing by two jack shafts of bent axle 3 34, on front end body 41 between described casing front end semicircle seat 42 and jack shaft supporting base 43, be provided with for the pilot hole 44 of tappet 56 is installed.
Preferably, on described output shaft 35, tailing axle 36 and jack shaft 34, be provided with bearing shell.
Preferably, described control system 5 comprises first device 51, second device 52 and the 3rd device 53 of kowtowing of kowtowing of kowtowing that structure is identical, described first device 51, second device 52 and the 3rd device 53 of kowtowing of kowtowing of kowtowing is arranged side by side on the seat 54 of kowtowing and by the seat of kowtowing and 54 is fixedly connected with casing front end assemblies 4, first, second, and third the place ahead of kowtowing device 51,52,53 is provided with control valve 6, and described control valve 6 is for controlling oil hydraulic cylinder 2 to-and-fro motion.
Preferably, described first device 51 of kowtowing, second device 52 and the 3rd device 53 of kowtowing of kowtowing includes a left side and kowtows 511, the right side kowtows 512 and tappet 513, a described left side kowtow 511 and the right side kowtow 512 by bearing pin be movably arranged on kowtow seat 54 on, a described left side kowtow 511 and right 512 the top of kowtowing between 54, be provided with spring 55 with kowtowing, kowtow and 511 contact with the tappet 56 in being arranged on casing front end assemblies 4 pilot holes 44 with right 512 the bottom of kowtowing in a left side, the opposite side of described tappet 56 is movably set with roller 56, described roller 56 contacts all the time with cam 315 and drives tappet 56 to move reciprocatingly according to the movement locus of cam 315, kowtow and 511 contact with the spool of described control valve 6 with right the place ahead of 512 of kowtowing in a left side.Left and right kowtows 511, 512 and the seat of kowtowing be provided with spring 55 between 54, effect bottom roller 56 at spring force contacts all the time with cam 315, so roller 56 can move reciprocatingly according to the movement locus of cam 315, thereby drive left and right to kowtow 511, 512 move reciprocatingly, thereby control the switching of control valve 6 valves, first kowtow in device 51 left kowtow 511 and right kowtowing 512 by two clamping plate, 311 external cam 315 of first piston crank connecting device 31, controlled respectively, in first piston crank connecting device 31, the cam 315 in two clamping plate 311 outsides is oppositely arranged, like this by first left side of kowtowing device 51 kowtow 511 and the valve of the control valve 6 of right 512 controls of kowtowing just in contrary open and-shut mode, these two control valves 6 are for controlling the liquid flow path direction of the oil hydraulic cylinder 2 being connected with first piston crank connecting device 31, make oil hydraulic cylinder 2 do reciprocal fore and aft motion.Second device 52, the 3rd control procedure and first of device 53 and the second piston crank connection set 32, the 3rd piston crank connection set 33 device 51 of kowtowing of kowtowing of kowtowing is identical with first piston crank connecting device 31, control system 5, bent axle 3 and oil hydraulic cylinder 2 actings in conjunction have formed a closed-loop system, make bent axle 3 can do continuous rotation motion.
Preferably, in described pilot hole 44, be provided with guide sleeve 45.
Working procedure of the present invention is: three oil hydraulic cylinders 2 respectively with bent axle 3 on first piston crank connecting device 31, the second piston crank connection set 32, the crank pin 314 of the 3rd piston crank connection set 33 connects, the piston rod of oil hydraulic cylinder 2, crank pin 314 and bent axle 3 have formed a linkage mechanism, the piston rod of oil hydraulic cylinder 2 is done fore and aft motion like this, drive crank pin 314 axle mounting hole 312 on clamping plate 311 to rotate, thereby drive clamping plate 311 and whole bent axle 3 to do rotation motion, because the outer side surface of clamping plate 311 is provided with cam 315, cam 315 can rotate around axle mounting hole 312 along with clamping plate 311, cam 315 will be done front-rear reciprocation movement with the push rod 56 of autocontrol system 5 like this, the other end of push rod 56 will be controlled a left side, the right side kowtows 511, 512, thereby control the switching of control valve 6, control valve 6 is for controlling oil hydraulic cylinder 2 liquid flow path directions, thereby control the flexible of oil hydraulic cylinder 2, so just formed a complete closed-loop system.By three equidistributed oil hydraulic cylinders, 2 driving cranks 3, rotate, each oil hydraulic cylinder 2 is controlled by first of control system 5 device 51, second device 52 and the 3rd device 53 of kowtowing of kowtowing of kowtowing, and guarantees that three oil hydraulic cylinders 2 can do continuous rotation motion by driving crank 3.
As shown in Figure 9, the output speed of bent axle and the curve of torque, output speed and torque are steady, and rotating speed is little and torque is large, is suitable as the power input device of underground equipment.
Etc. angle of distribution hydraulic cylinder type motor, utilize three universal hydraulic cylinder, drive three the 120 equally distributed cranks of degree, thereby the straight line motion of oil hydraulic cylinder is converted into the rotation motion of bent axle, thereby by control system, control control valve again and automatically control liquid flow path direction, realize the continuous operation of bent axle, adopt the equally distributed structure of three cranks to reduce the rotating speed of bent axle and the pulsation of output torque of rotation motion, make output speed and the torque of bent axle steady, so just can be as the power input device of coal winning machine, flight conveyer, traction locomotive and monorail crane locomotive.
Etc. angle of distribution hydraulic cylinder type motor, traditional use motor or diesel engine have been changed as the present situation of power input device, adopt emulsified liquid conventional under mine as the liquid source of oil hydraulic cylinder, control system adopts the structure of machinery and hydraulic pressure combination equally, do not use electric equipment, by this setup, just can effectively solve the Explosion-Proof of coal-face, reduce cost of production, improved production safety coefficient.
Etc. angle of distribution hydraulic cylinder type motor, adopt box typed structure, install simple, easy to maintenance, quick.Owing to adopting Driven by Hydraulic Cylinder bent axle to rotate, so revolution is lower, moment of torsion is larger, is applicable to the requirement that colliery downhole equipment is used, and this product can reduce mechanical accident rate widely in addition, increases the more effective time.
By reference to the accompanying drawings embodiments of the invention are explained in detail above, but the present invention is not limited to above-described embodiment, in the ken possessing those of ordinary skills, can also under the prerequisite that does not depart from aim of the present invention, makes various variations.
Claims (4)
1. the angle of distribution hydraulic cylinder type motor bent axle such as, it is characterized in that: comprise three groups of first piston crank connecting devices (31) that the structure being arranged side by side is identical, the second piston crank connection set (32), the 3rd piston crank connection set (33), jack shaft (34), output shaft (35) and tailing axle (36), described first, the second and the 3rd piston crank connection set (31), (32), (33) including two integral body is circular clamping plate (311), the center of described clamping plate (311) is provided with axle mounting hole (312), on described axle mounting hole (312) clamping plate (311) around, being provided with three is (120) and spends equally distributed pin shaft hole (313), between two clamping plate (311), by single crank pin (314), with clamping plate (311) upper pin holes (313) interference fit, two clamping plate (311) are fixedly connected with,
The outer side surface of described clamping plate (311) is provided with cam (315), described cam (315) is comprised of two concentric waney smaller part annulus (3151) and more than half annulus (3152), cam (315) on two clamping plate (311) of each piston crank connection set is reverse setting, and the center line of the smaller part annulus (3151) of cam (315) and more than half separatrix of annulus (3152) and the center line of crank pin (314) and axle mounting hole (312) is positioned at same plane;
Described the second piston crank connection set (32) is fixedly connected with first piston crank connecting device (31), the 3rd piston crank connection set (33) respectively with axle mounting hole (312) interference fit on clamping plate (311) by jack shaft (34), and the crank pin (314) of first piston crank connecting device (31), the second piston crank connection set (32) and the 3rd piston crank connection set (33) is (120) degree and is uniformly distributed centered by axle mounting hole (312);
Described output shaft (35) is fixedly connected with the axle mounting hole (312) of first piston crank connecting device (31) outside clamping plate, and described tailing axle (36) is fixedly connected with the axle mounting hole (312) of the 3rd piston crank connection set (33) outside clamping plate.
2. the angle of distribution hydraulic cylinder type motor bent axle such as according to claim 1, it is characterized in that: between described smaller part annulus (3151) and more than half annulus (3152), be provided with transition linkage section (3153), described transition linkage section (3513) and smaller part annulus (3151) and more than half annulus (3152) rounding off.
3. the angle of distribution hydraulic cylinder type motor bent axle such as according to claim 1, it is characterized in that: between described cam (315) and clamping plate (311), can adopt screw to add interference fit and be connected, also can adopt cam (315) and the one-body molded setting of clamping plate (311).
4. the angle of distribution hydraulic cylinder type motor bent axle such as according to claim 1, is characterized in that: between described output shaft (35), tailing axle (36) and axle mounting hole (312), by key, be connected with interference fit.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410349676.1A CN104088890B (en) | 2014-07-22 | 2014-07-22 | Etc. angle of distribution hydraulic cylinder type motor bent axle |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410349676.1A CN104088890B (en) | 2014-07-22 | 2014-07-22 | Etc. angle of distribution hydraulic cylinder type motor bent axle |
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| Publication Number | Publication Date |
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| CN104088890A true CN104088890A (en) | 2014-10-08 |
| CN104088890B CN104088890B (en) | 2016-05-11 |
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| CN201410349676.1A Active CN104088890B (en) | 2014-07-22 | 2014-07-22 | Etc. angle of distribution hydraulic cylinder type motor bent axle |
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| US5138859A (en) * | 1990-06-15 | 1992-08-18 | Firma Wilhelm Hegenscheidt Gesellschaft Mbh | Method and apparatus for smooth-rolling and deep-rolling multi-stroke crankshafts |
| JP2007285495A (en) * | 2006-04-20 | 2007-11-01 | Toyota Industries Corp | Internal combustion engine |
| KR20090126618A (en) * | 2008-06-04 | 2009-12-09 | 현대자동차주식회사 | Crank shaft of two cylinder engine equipped with fly wheel |
| CN102619614A (en) * | 2011-01-26 | 2012-08-01 | 杨成元 | Novel pumping pressure four-stroke four-cylinder layering vortex combustion energy-saving gasoline engine |
| CN203114876U (en) * | 2013-02-21 | 2013-08-07 | 第一拖拉机股份有限公司 | Back end driving crankshaft component of six-cylinder diesel |
| CN204082877U (en) * | 2014-07-22 | 2015-01-07 | 长治市永华机械有限公司 | A kind of equal distribution angle hydraulic cylinder type motor bent axle |
-
2014
- 2014-07-22 CN CN201410349676.1A patent/CN104088890B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5138859A (en) * | 1990-06-15 | 1992-08-18 | Firma Wilhelm Hegenscheidt Gesellschaft Mbh | Method and apparatus for smooth-rolling and deep-rolling multi-stroke crankshafts |
| JP2007285495A (en) * | 2006-04-20 | 2007-11-01 | Toyota Industries Corp | Internal combustion engine |
| KR20090126618A (en) * | 2008-06-04 | 2009-12-09 | 현대자동차주식회사 | Crank shaft of two cylinder engine equipped with fly wheel |
| CN102619614A (en) * | 2011-01-26 | 2012-08-01 | 杨成元 | Novel pumping pressure four-stroke four-cylinder layering vortex combustion energy-saving gasoline engine |
| CN203114876U (en) * | 2013-02-21 | 2013-08-07 | 第一拖拉机股份有限公司 | Back end driving crankshaft component of six-cylinder diesel |
| CN204082877U (en) * | 2014-07-22 | 2015-01-07 | 长治市永华机械有限公司 | A kind of equal distribution angle hydraulic cylinder type motor bent axle |
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| CN104088890B (en) | 2016-05-11 |
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Effective date of registration: 20170504 Address after: 226000, No. 108, Airport Road, Xingcheng Town, Nantong, Jiangsu, Tongzhou District Patentee after: Nantong Junqi Machinery Co., Ltd. Address before: 046012 Changzhi City Industrial Park, North Village, Shanxi Patentee before: Changzhi City Yonghua Machinery Co., Ltd. |
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