CN203473174U - Combined crank mechanism - Google Patents
Combined crank mechanism Download PDFInfo
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- CN203473174U CN203473174U CN201320624523.4U CN201320624523U CN203473174U CN 203473174 U CN203473174 U CN 203473174U CN 201320624523 U CN201320624523 U CN 201320624523U CN 203473174 U CN203473174 U CN 203473174U
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- connecting rod
- crank
- fixedly connected
- axle sleeve
- shaft
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Abstract
The utility model provides a combined crank mechanism. The combined crank mechanism comprises a crank main shaft, a supporting frame shaft sleeve, a crank arm, a connecting rod shaft, a connecting rod shaft sleeve, chain wheels and a chain. The pair of chain wheels of the same type, in the same size and with the same number of teeth are added to the crank main shaft and the connecting rod shaft, and connected together through the chain. The chain wheel on the crank main shaft does not rotate while the combined crank mechanism rotates, and the chain wheel on the connecting rod shaft only rotates around the chain wheel on the crank main shaft and does not rotate around the axis of the connecting rod shaft. A limiting piece is arranged on an extension piece fixedly connected to the chain wheel on the connecting rod shaft and serves as a second connecting point of a connecting rod, and the connecting rod shaft serves as a first connecting point. When a crank rotates, the connecting rod only moves in the horizontal direction and does not rotate. In addition, the connecting rod shaft is arranged to be an eccentric shaft, the connecting rod swings at a certain amplitude under limitation of the eccentric shaft with the second connecting point serving as a base point while moving in the horizontal direction along with rotation of the crank, and therefore force exerted on the connecting rod can act effectively, and the connecting rod plays a role of a lever and drives the crank in a labor-saving mode.
Description
Technical field
The utility model relates to a kind of crank mechanism, particularly a kind of for the built crank mechanism in manpower transportation's drive systems such as bicycle, three-wheel vehicle, wheelchair, belongs to mechanical transmission fields.
Background technology
Existing bicycle, three-wheel vehicle, the manpower transportations' such as tricycle for disabled individuals the general transmission scheme adopting of drive system is: by both sides, ridden and respectively driven a crank, two cranks drive hinge wheel jointly, hinge wheel is by chain-driving minor sprocket, minor sprocket drives bicycle rear to drive by click free-wheel clutch, the driving mechanism for bicycle of this form is simple in structure, easy to operate, but because the crank of both sides is limit by rotation space, its limited length, limited to the performance of its laborsaving driving usefulness, still relatively effort seems while causing this type of manpower transportation to ride for a long time.
Utility model content
In order to address this problem, we wish to increase a connecting rod between foot-operated and crank, and by foot-operated drive link, connecting rod is driving crank again, reaches the power-actuated effect of province.Because the pitman shaft on crank and connecting rod are to be rotationally connected, when pitman shaft is during as a point of connection of connecting rod, for connecting rod energy driving crank is rotated, connecting rod also needs second point of connection to form the support of 2 connections, and second point of connection when crank rotates, to keep constant with the relative position of the first point of connection, only there is translation and do not rotate in guarantee connecting rod like this when driving crank rotates.Pitman shaft on our crank is set to eccentric shaft in addition, when the foot-operated end application of force driving crank of connecting rod rotates, connecting rod is when doing translation with the rotation of crank, the swing that second point of connection of also take under the restriction of eccentric link axle is made certain amplitude as basic point operates, and connecting rod could effectively do work and then crank is carried out to laborsaving driving like this.We have invented a kind of built crank mechanism to reach above-mentioned effect for this reason.Concrete technical scheme of the present utility model is as follows:
A kind of built crank mechanism, comprise crank spindle, bracing frame axle sleeve, crank arm, pitman shaft, pitman shaft axle sleeve, sprocket wheel and chain, wherein crank spindle is rotatably connected on bracing frame axle sleeve, and one end of crank arm is fixedly connected on crank spindle, and the other end of crank arm is being rotationally connected a pitman shaft axle sleeve, in pitman shaft axle sleeve, be rotationally connected pitman shaft, pitman shaft is fixedly connected on crank arm, and pitman shaft sponson relatively its part being fixedly connected on crank arm is eccentric, the point of connection that the eccentric sponson of pitman shaft is connecting rod; Bracing frame axle sleeve left side is fixedly connected with a sprocket wheel, and pitman shaft axle sleeve right side is also fixedly connected with a sprocket wheel, two sprocket wheels on same vertical surface and model size all identical with the number of teeth, and be connected by chain.On the extendible portion of pitman shaft axle sleeve, be also provided with connecting rod locating part, another point of connection that connecting rod locating part is connecting rod.
Described crank arm can be to be fixedly attached on crank spindle by an attaching parts, can be to be also directly fixedly connected on crank spindle.
Described crank arm can be to be fixedly attached on pitman shaft by an attaching parts, can be to be also directly fixedly connected on pitman shaft.
The direction that the bearing of trend of the extendible portion of described pitman shaft axle sleeve needs connecting rod force side to swing while being used in conjunction with according to described built crank mechanism and connecting rod is determined.When connecting rod force side need to swing up and down, the bearing of trend of the extendible portion of pitman shaft axle sleeve is horizontal direction, and when connecting rod force side needs swing, the bearing of trend of the extendible portion of pitman shaft axle sleeve is vertical direction.
With an eccentric axle sleeve of installing, replace the eccentric link axle of technique scheme, with a d-axis, replace the pitman shaft axle sleeve of technique scheme, shape and the position relationship of the pitman shaft in technique scheme and pitman shaft axle sleeve are exchanged, the form that can obtain another kind of built crank of the present utility model mechanism, concrete technical scheme is as follows:
A kind of built crank mechanism, comprise crank spindle, bracing frame axle sleeve, crank arm, excentric sleeve, d-axis, sprocket wheel and chain, wherein crank spindle is rotatably connected on bracing frame axle sleeve, one end of crank arm is fixedly connected on crank spindle, the other end of crank arm is rotatably connected on the stage casing of a d-axis, d-axis is through an excentric sleeve being fixedly mounted on crank arm, the relative d-axis in installation site of excentric sleeve keeps eccentric, the cylindrical of excentric sleeve forms a point of connection of connecting rod, bracing frame axle sleeve left side is fixedly connected with a sprocket wheel, d-axis right-hand member is also fixedly connected with a sprocket wheel, two sprocket wheels on same vertical surface and model size all identical with the number of teeth, and be connected by chain.The left end of d-axis is fixedly connected with an extension, and extension is provided with locating part, another point of connection that this locating part is connecting rod.
The direction that the bearing of trend of described extension needs connecting rod force side to swing while being used in conjunction with according to described built crank mechanism and connecting rod is determined.When connecting rod force side need to swing up and down, the bearing of trend of extension is horizontal direction, and when connecting rod force side needs swing, the bearing of trend of extension is vertical direction.
According to the built crank mechanism described in above-mentioned two technical schemes, we are variation increase necessary connecting rod mechanism and speed-changing mechanism on this basis, constructs multiple types like the manpower transportation's of bicycle or wheelchair etc. drive system.
(1) be, the drive system based on three kinds of constructed bicycles of first technical scheme below.
1), the drive system of the first bicycle, comprise built crank mechanism, connecting rod mechanism and speed-changing mechanism, built crank mechanism and connecting rod mechanism are respectively established one group in the both sides of bicycle, jointly drive speed-changing mechanism, wherein:
Described built crank mechanism comprises hind axle, vehicle frame axle sleeve, crank arm, pitman shaft, pitman shaft axle sleeve, sprocket wheel and chain, wherein hind axle is rotatably connected on vehicle frame axle sleeve, one end of crank arm is fixedly connected on hind axle, the other end of crank arm is being rotationally connected a pitman shaft axle sleeve, in pitman shaft axle sleeve, be rotationally connected pitman shaft, one end of pitman shaft is fixedly connected on crank arm by attaching parts, pitman shaft sponson relatively its part being fixedly connected on crank arm is eccentric, the eccentric sponson of pitman shaft forms the axle journal being rotationally connected with connecting rod, vehicle frame axle sleeve left side is fixedly connected with a sprocket wheel, pitman shaft axle sleeve right side is also fixedly connected with a sprocket wheel, two sprocket wheels on same vertical surface and model size all identical with the number of teeth, and be connected by chain.The extension to the right of pitman shaft axle sleeve, extendible portion is provided with the limit assembly being connected with rod slide.
Described connecting rod mechanism comprises connecting rod, ride and pulley, connecting rod one end is rotatably connected on the eccentric sponson of pitman shaft, the elongated end that this end extends to form is to the right installed with a little axle, rotating pulley is installed on little axle, pulley is limited in the interior sliding block joint that forms of limit assembly groove of pitman shaft axle sleeve extendible portion, and the other end of connecting rod is provided with foot-operated.
Described speed-changing mechanism comprises a pair of large miniature gears and a pair of big or small carrier gear, wherein big gear wheel is fixedly connected on hind axle, on hind axle, be also rotationally connected a hind axle axle sleeve, in the horizontal-extending part of vehicle frame axle sleeve, be installed with bridge gear shaft, size carrier gear is made of one and is rotatably connected on bridge gear shaft, little carrier gear is meshed with the big gear wheel on hind axle, large carrier gear is meshed with the miniature gears on hind axle axle sleeve, miniature gears is fixedly connected on the small end of hind axle axle sleeve, the large end of hind axle axle sleeve is fixedly connected with click free-wheel clutch, power-transfer clutch drives rear wheel hub to drive bicycle thus.
2), the drive system of the second bicycle, comprise built crank mechanism, connecting rod mechanism and speed-changing mechanism ，San Ge mechanism respectively establish one group in the both sides of bicycle, wherein:
Described built crank mechanism comprises crank spindle, crank arm, pitman shaft, pitman shaft axle sleeve, sprocket wheel and chain, wherein crank spindle is fixedly connected on the vertical fixedly auxiliary of vehicle frame, one end of crank arm is rotatably connected on crank spindle, and the other end of crank arm is fixedly connected with pitman shaft, and pitman shaft middle part is rotatably connected to pitman shaft axle sleeve, pitman shaft sponson relatively its part being fixedly connected on crank arm is eccentric, and the eccentric sponson of pitman shaft forms the axle journal being rotationally connected with connecting rod.Crank spindle left end is also fixedly connected with a sprocket wheel, and pitman shaft axle sleeve right side is also fixedly connected with a sprocket wheel, two sprocket wheels on same vertical surface and model size all identical with the number of teeth, and be connected by chain.The left side of pitman shaft axle sleeve is installed with the extension extending to the right, and extension is provided with the limit assembly being connected with rod slide.
Described connecting rod mechanism comprises connecting rod, ride and pulley, connecting rod one end is rotatably connected on the eccentric sponson of pitman shaft, the elongated end that this end extends to form is to the right installed with a little axle, rotating pulley is installed on little axle, pulley is limited in forming sliding block joint in the limit assembly groove on extension, and the other end of connecting rod is provided with foot-operated.
Described speed-changing mechanism comprises a pair of large miniature gears and a little carrier gear, big gear wheel is fixedly mounted on the side of crank arm connecting crank spindle end, little carrier gear is fixedly connected on bridge gear shaft, bridge gear shaft is rotatably connected on the vertical fixedly auxiliary of vehicle frame, miniature gears is fixedly connected on one end of hind axle, hind axle is rotatably connected on the vertical fixedly auxiliary of vehicle frame, big gear wheel is meshed with little carrier gear, little carrier gear is meshed with miniature gears again, on hind axle, be also fixedly connected with click free-wheel clutch, power-transfer clutch drives rear wheel hub to drive bicycle thus.
3), the drive system of the third bicycle, comprise built crank mechanism, connecting rod mechanism and speed-changing mechanism, built crank mechanism and connecting rod mechanism are respectively established one group in the both sides of bicycle, jointly drive speed-changing mechanism, wherein:
Described built crank mechanism comprises crank spindle, vehicle frame axle sleeve, crank arm, eccentric shaft, eccentric shaft axle sleeve, sprocket wheel and chain, wherein crank spindle is rotatably connected on vehicle frame axle sleeve, one end of crank arm is fixedly connected on crank spindle by attaching parts, the other end of crank arm is fixedly connected on eccentric shaft, eccentric shaft middle part is rotationally connected eccentric shaft axle sleeve, eccentric shaft sponson relatively its part being fixedly connected on crank arm is eccentric, the eccentric sponson of eccentric shaft is provided with rotating spacing pulley, eccentric shaft axle sleeve extends to upper right side, its extendible portion is installed with pitman shaft, pitman shaft sponson forms the axle journal being rotationally connected with connecting rod.Vehicle frame axle sleeve left side is fixedly connected with a sprocket wheel, and eccentric shaft axle sleeve right side is also fixedly connected with a sprocket wheel, two sprocket wheels on same vertical surface and model size all identical with the number of teeth, and be connected by chain.
Described connecting rod mechanism comprises connecting rod and foot-operated, and connecting rod one end is rotatably connected on pitman shaft, and the lower surface of connecting rod has positioning runner, and chute is corresponding with the spacing pulley on eccentric shaft, forms sliding block joint, and the other end of connecting rod is rotatably connected to foot-operated.
Described speed-changing mechanism comprises a pair of large minor sprocket and chain, wherein hinge wheel is fixedly connected on crank spindle, and hinge wheel is connected with minor sprocket by chain, and minor sprocket is arranged on hind axle, minor sprocket is connected with hind axle by click free-wheel clutch, drives bicycle.
(2), be below the drive system based on the constructed a kind of wheelchair of second technical scheme.
A wheelchair drive system, comprises built crank mechanism and connecting rod mechanism, and built crank mechanism and connecting rod mechanism are respectively established one group in the both sides of wheelchair, wherein:
Described built crank mechanism, comprise wheelchair main shaft, wheelchair bracing frame axle sleeve, crank arm, excentric sleeve, d-axis, sprocket wheel and chain, wherein wheelchair main shaft is rotatably connected on wheelchair bracing frame axle sleeve, one end of crank arm is fixedly connected on wheelchair main shaft, and the other end of crank arm is rotatably connected on the stage casing of a d-axis, and d-axis is through an excentric sleeve being fixedly mounted on crank arm, the relative d-axis in installation site of excentric sleeve keeps eccentric, and the cylindrical of excentric sleeve forms the axle journal being rotationally connected with connecting rod.Wheelchair bracing frame axle sleeve left side is fixedly connected with a sprocket wheel, and d-axis right-hand member is also fixedly connected with a sprocket wheel, two sprocket wheels on same vertical surface and model size all identical with the number of teeth, and be connected by chain.The left end of d-axis is fixedly connected with one to the extension of downward-extension, is fixedly connected with a little axle on extension, and the sponson of little axle is made the dead sheave being connected with rod slide.
Described connecting rod mechanism comprises connecting rod, handgrip and limit assembly, one end that connecting rod is connected with built crank mechanism is rotatably connected on the cylindrical axle journal place of excentric sleeve, and its end is to downward-extension, extendible portion is provided with limit assembly, limit assembly on connecting rod slides spacing connection with the dead sheave in built crank mechanism, and pitman arm extends to upper left side, and end is rotatably connected to handgrip.
The utility model with respect to the beneficial effect of prior art is:
Built crank provided by the utility model mechanism, at crank spindle, increased a pair of model size sprocket wheel identical with the number of teeth with crank connecting link axle place, and couple together by chain, when built crank mechanism rotates, sprocket wheel on crank spindle does not rotate, under the engagement of chain, sprocket wheel on crank connecting link axle is only around the sprocket wheel revolution on crank spindle and not rotation, locating part is set being fixedly connected on the extension of this sprocket wheel, the second point of connection as connecting rod, crank connecting link axle is as the first point of connection of connecting rod, when crank rotates, the second point of connection can be with respect to the invariant position of the first point of connection.Like this, when using connecting rod driving crank, only there is translation and do not rotate in connecting rod.In addition, pitman shaft on crank is set to eccentric shaft, when the force side of connecting rod application of force driving crank rotates, connecting rod is when doing translation with the rotation of crank, also take the second point of connection as basic point, under the restriction of crank eccentric shaft, do the swing running of certain amplitude, thereby the power that makes to be applied on connecting rod is done work effectively, make connecting rod bring into play the effect of laborsaving lever, crank is carried out to laborsaving driving.
Accompanying drawing explanation
Fig. 1 is the cross-sectional view of technical solutions of the utility model one built crank mechanism;
Fig. 2 is the left view of Fig. 1;
Fig. 3 is the cross-sectional view of technical solutions of the utility model two built crank mechanisms;
Fig. 4 is the structural representation of the drive system of the first bicycle;
Fig. 5 is the birds-eye view of the built crank mechanism in Fig. 4 while going to level attitude;
Fig. 6 is the A-A section-drawing of Fig. 4;
Fig. 7 is the B-B section-drawing of Fig. 4;
Fig. 8 is the C-C section-drawing of Fig. 4;
Fig. 9 is the schematic diagram of Fig. 4 while removing connecting rod mechanism;
Figure 10 is the structural representation of the drive system of the second bicycle;
Figure 11 is the birds-eye view of the built crank mechanism in Figure 10 while going to level attitude;
Figure 12 is the A-A section-drawing of Figure 10;
Figure 13 is the B-B section-drawing of Figure 10;
Figure 14 is the schematic diagram of Figure 10 while removing connecting rod mechanism;
Figure 15 is the structural representation of the drive system of the third bicycle;
Figure 16 is the birds-eye view of the built crank mechanism in Figure 15 while going to level attitude;
Figure 17 is the A-A section-drawing of Figure 15;
Figure 18 is the B-B section-drawing of Figure 15;
Figure 19 is the partial schematic diagram of Figure 15 while removing connecting rod mechanism;
Figure 20 is a kind of structural representation of drive system of wheelchair;
Figure 21 is the birds-eye view of the built crank mechanism in Figure 20 while going to level attitude;
Figure 22 is the A-A section-drawing of Figure 20.
Figure 23 is that wheelchair drive system is arranged on the schematic diagram on wheelchair.
The specific embodiment
Below in conjunction with accompanying drawing Dui Ben built crank mechanism and application mode thereof, be described further.
(with crank arm 5, by attaching parts 6, be fixedly attached to pitman shaft 7 as shown in Figure 1-2, pitman shaft axle sleeve 9 extendible portion levels extend to example to the right), the built crank mechanism of the utility model the first technical scheme, comprise crank spindle 1, bracing frame axle sleeve 2, crank arm 5, pitman shaft 7, pitman shaft axle sleeve 9, sprocket wheel 3, 8 and chain 4, wherein crank spindle 1 is rotatably connected on bracing frame axle sleeve 2, one end of crank arm 5 is directly fixedly connected on crank spindle 1, the other end of crank arm 5 is being rotationally connected a pitman shaft axle sleeve 9, in pitman shaft axle sleeve 9, be rotationally connected pitman shaft 7, pitman shaft 7 ends are fixedly connected on crank arm 5 by attaching parts 6, pitman shaft 7 sponsons relatively its part being fixedly connected on crank arm 5 are eccentric, the point of connection that the eccentric sponson of pitman shaft 7 is connecting rod, bracing frame axle sleeve 2 left sides are fixedly connected with a sprocket wheel 3, pitman shaft axle sleeve 9 right sides be also fixedly connected with 8, two sprocket wheels of a sprocket wheel 3,8 on same vertical surface and model size all identical with the number of teeth, and be connected by chain 4.On the extendible portion of pitman shaft axle sleeve 9, be also provided with connecting rod locating part 10, another point of connection that connecting rod locating part 10 is connecting rod.
Shape and position relationship to the pitman shaft 7 of the built crank mechanism of the first technical scheme and pitman shaft axle sleeve 9 exchange, can obtain the form of another kind of built crank of the present utility model mechanism, (with extension 19, extend to vertically downward example) as shown in Figure 3, the built crank mechanism of the second technical scheme, comprise crank spindle 11, bracing frame axle sleeve 12, crank arm 15, excentric sleeve 18, d-axis 16, sprocket wheel 13, 17 and chain 14, wherein crank spindle 11 is rotatably connected on bracing frame axle sleeve 12, one end of crank arm 15 is fixedly connected on crank spindle 11, the other end of crank arm 15 is rotatably connected on the stage casing of a d-axis 16, d-axis 16 is through an excentric sleeve 18 being fixedly mounted on crank arm 15, the relative d-axis 16 of excentric sleeve 18 keeps eccentric, the cylindrical of excentric sleeve 18 forms a point of connection of connecting rod, bracing frame axle sleeve 12 left sides are fixedly connected with a sprocket wheel 13, d-axis 16 right-hand members are also fixedly connected with a sprocket wheel 17, two sprocket wheels 13, 17 on same vertical surface and model size all identical with the number of teeth, and be connected by chain 14.The left end of d-axis 16 is fixedly connected with an extension 19, and extension is provided with locating part 20, another point of connection that this locating part 20 is connecting rod.
Built crank mechanism based on described in above-mentioned two technical schemes, we are variation increase necessary connecting rod mechanism and speed-changing mechanism on this basis, constructs multiple types like the manpower transportation's of bicycle or wheelchair etc. drive system.
(1), be below the drive system of three kinds of bicycles based on first technical scheme structure.
1), the drive system of the first bicycle, as shown in Fig. 4-Fig. 9, comprise built crank mechanism, connecting rod mechanism and speed-changing mechanism, built crank mechanism and connecting rod mechanism are respectively established one group in the both sides of bicycle, jointly drive speed-changing mechanism, wherein:
Built crank mechanism comprises hind axle 21, vehicle frame axle sleeve 23, crank arm 29, pitman shaft 31, pitman shaft axle sleeve 33, sprocket wheel 22, 32 and chain 28, wherein hind axle 21 is rotatably connected on vehicle frame axle sleeve 23, vehicle frame axle sleeve 23 is fixedly mounted on vehicle frame 45, one end of crank arm 29 is fixedly connected on hind axle 21, the other end of crank arm 29 is being rotationally connected a pitman shaft axle sleeve 33, in pitman shaft axle sleeve 33, be rotationally connected pitman shaft 31, one end of pitman shaft 31 is fixedly connected on crank arm 29 by attaching parts 30, pitman shaft 31 sponsons relatively its part being fixedly connected on crank arm 29 are eccentric, the eccentric sponson of pitman shaft 31 forms the axle journal being rotationally connected with connecting rod 34, vehicle frame axle sleeve 23 left sides are fixedly connected with a sprocket wheel 22, pitman shaft axle sleeve 33 right sides are also fixedly connected with a sprocket wheel 32, two sprocket wheels 22, 32 on same vertical surface and model size all identical with the number of teeth, and be connected by chain 28.The extension to the right of pitman shaft axle sleeve 33, extendible portion is provided with the limit assembly 39 with connecting rod 34 sliding block joints.
Connecting rod mechanism comprises connecting rod 34, foot-operated 44 and pulley 38, connecting rod 34 one end are rotatably connected on the eccentric sponson of pitman shaft 31, the elongated end 36 that this end extends to form is to the right installed with a little axle 37, rotating pulley 38 is installed on little axle 37, pulley 38 is limited in the interior sliding block joint that forms of limit assembly 39 grooves of pitman shaft axle sleeve 33 extendible portions, and the other end of connecting rod 34 is provided with foot-operated 44.
Speed-changing mechanism comprises a pair of large miniature gears 24, 25 and a pair of big or small carrier gear 42, 40, wherein big gear wheel 24 is fixedly connected on hind axle 21, on hind axle 21, be also rotationally connected a hind axle axle sleeve 35, in the horizontal-extending part 43 of vehicle frame axle sleeve 23, be installed with bridge gear shaft 41, size carrier gear 42, 40 are made of one and are rotatably connected on bridge gear shaft 41, little carrier gear 40 is meshed with the big gear wheel 24 on hind axle 21, large carrier gear 42 is meshed with the miniature gears 25 on hind axle axle sleeve 35, miniature gears 25 is fixedly connected on the small end of hind axle axle sleeve 35, the large end of hind axle axle sleeve 35 is fixedly connected with click free-wheel clutch 27, power-transfer clutch 27 drives rear wheel hub 26 to drive bicycle thus.
During the motion of this drive system, by foot-operated 44 drivening rod mechanisms, connecting rod mechanism drives built crank mechanism by pitman shaft 31 and 39 two point of connection of limit assembly, built crank mechanism coordinates big or small carrier gear 42,40 conversion speed ratios to accelerate by the large miniature gears 24,25 of speed-changing mechanism, by speed-changing mechanism, drive back wheels of vehicle wheel hub 26 again, thereby drive bicycle.When built crank mechanism rotates, sprocket wheel 22 on hind axle 21 does not rotate, under the engagement of chain 28, 32, sprocket wheel on crank connecting link axle 31 is around sprocket wheel 22 revolution on hind axle 21 and not rotation, so there is translation and do not rotate in 34, connecting rod, in addition because pitman shaft 31 is eccentric shaft, connecting rod 34 is when doing translation with crank rotation, also take limit assembly 39 as basic point, under the restriction of pitman shaft 31, do the running that swings up and down of certain amplitude, under the stack of two motions, when connecting rod mechanism drives foot-operated 44 path of motion be one large up and down, " 0 " shape elliplicorbit that left and right is little, this path of motion is more suitable for the application of force operation requirements scrunching up and down of bicycle, also can more effectively do work, crank is carried out to laborsaving driving.
2), the drive system of the second bicycle, as shown in Figure 10-Figure 14, comprise built crank mechanism, connecting rod mechanism and speed-changing mechanism ，San Ge mechanism respectively establish one group in the both sides of bicycle, wherein:
Built crank mechanism comprises crank spindle 53, crank arm 57, pitman shaft 59, pitman shaft axle sleeve 60, sprocket wheel 54,58 and chain 56, wherein crank spindle 53 is fixedly connected on the vertical fixedly auxiliary 52 of vehicle frame 68, one end of crank arm 57 is rotatably connected on crank spindle 53, the other end of crank arm 57 is fixedly connected with pitman shaft 59, pitman shaft 59 middle parts are rotatably connected to pitman shaft axle sleeve 60, pitman shaft 59 sponsons relatively its part being fixedly connected on crank arm 57 are eccentric, and the eccentric sponson of pitman shaft 59 forms the axle journal being rotationally connected with connecting rod 62.Crank spindle 53 left ends are also fixedly connected with a sprocket wheel 54, pitman shaft axle sleeve 60 right sides be also fixedly connected with 58, two sprocket wheels of a sprocket wheel 54,58 on same vertical surface and model size all identical with the number of teeth, and be connected by chain 56.The left side of pitman shaft axle sleeve 60 is installed with the extension 61 extending to the right, and extension 61 is provided with the limit assembly 63 with connecting rod 62 sliding block joints.
Connecting rod mechanism comprises connecting rod 62, foot-operated 67 and pulley 65, connecting rod 62 one end are rotatably connected on the eccentric sponson of pitman shaft 59, the elongated end 66 that this end extends to form is to the right installed with a little axle 64, rotating pulley 65 is installed on little axle 64, pulley 65 is limited in forming sliding block joint in limit assembly 63 grooves on extension 61, and the other end of connecting rod 62 is provided with foot-operated 67.
Speed-changing mechanism comprises a pair of large miniature gears 55, 49 and little carrier gears 51, big gear wheel 55 is fixedly mounted on the side of crank arm 57 connecting crank main shaft 53 ends, little carrier gear 51 is fixedly connected on bridge gear shaft 50, bridge gear shaft 50 is rotatably connected on the vertical fixedly auxiliary 52 of vehicle frame 68, miniature gears 49 is fixedly connected on one end of hind axle 46, hind axle 46 is rotatably connected on the vertical fixedly auxiliary 52 of vehicle frame 68, big gear wheel 55 is meshed with little carrier gear 50, little carrier gear 50 is meshed with miniature gears 49 again, on hind axle 46, be also fixedly connected with click free-wheel clutch 47, power-transfer clutch 47 drives rear wheel hub 48 to drive bicycle thus.
During the motion of this drive system, by foot-operated 67 drivening rod mechanisms, connecting rod mechanism drives built crank mechanism by pitman shaft 59 and 63 two point of connection of limit assembly, built crank mechanism coordinates little carrier gear 51 conversion speed ratios to accelerate by the large miniature gears 55,49 of speed-changing mechanism, by speed-changing mechanism, drive back wheels of vehicle wheel hub 48 again, thereby drive bicycle.When built crank mechanism rotates, sprocket wheel 54 on crank spindle 53 does not rotate, under the engagement of chain 56, 58, sprocket wheel on crank connecting link axle 59 is around sprocket wheel 54 revolution on crank spindle 53 and not rotation, so there is translation and do not rotate in 62, connecting rod, in addition because pitman shaft 59 is eccentric shaft, connecting rod 62 is when doing translation with crank rotation, also take limit assembly 63 as basic point, under the restriction of pitman shaft 59, do the running that swings up and down of certain amplitude, under the stack of two motions, when connecting rod mechanism drives foot-operated 67 path of motion be one large up and down, " 0 " shape elliplicorbit that left and right is little, this path of motion is more suitable for the application of force operation requirements scrunching up and down of bicycle, also can more effectively do work, crank is carried out to laborsaving driving.
3), the drive system of the third bicycle, as shown in Figure 15-Figure 19, comprise built crank mechanism, connecting rod mechanism and speed-changing mechanism, built crank mechanism and connecting rod mechanism are respectively established one group in the both sides of bicycle, jointly drive speed-changing mechanism, wherein:
Built crank mechanism comprises crank spindle 70, vehicle frame axle sleeve 71, crank arm 74, eccentric shaft 77, eccentric shaft axle sleeve 76, sprocket wheel 72, 75 and chain 73, wherein crank spindle 70 is rotatably connected on vehicle frame axle sleeve 71, vehicle frame axle sleeve 71 is fixedly mounted on vehicle frame 83, one end of crank arm 74 is fixedly connected on crank spindle 70 by attaching parts 69, the other end of crank arm 74 is fixedly connected on eccentric shaft 77, eccentric shaft 77 middle parts are rotationally connected eccentric shaft axle sleeve 76, eccentric shaft 77 sponsons relatively its part being fixedly connected on crank arm 74 are eccentric, the eccentric sponson of eccentric shaft 77 is provided with rotating spacing pulley 78, eccentric shaft axle sleeve 76 extends to upper right side, its extendible portion is installed with pitman shaft 81, pitman shaft 81 sponsons form the axle journal being rotationally connected with connecting rod 79.Vehicle frame axle sleeve 71 left sides are fixedly connected with a sprocket wheel 72, eccentric shaft axle sleeve 76 right sides be also fixedly connected with 75, two sprocket wheels of a sprocket wheel 72,75 on same vertical surface and model size all identical with the number of teeth, and be connected by chain 73.
Connecting rod mechanism comprises connecting rod 79 and foot-operated 86, connecting rod 79 one end are rotatably connected on pitman shaft 81, and the lower surface of connecting rod 79 has positioning runner, and chute is corresponding with the spacing pulley 78 on eccentric shaft 77, form sliding block joint, the other end of connecting rod 79 is rotatably connected to foot-operated 86.
Speed-changing mechanism comprises a pair of large minor sprocket 80,84 and chain 82, wherein hinge wheel 80 is fixedly connected on crank spindle 70, hinge wheel 80 is connected with minor sprocket 84 by chain 82, minor sprocket 84 is arranged on hind axle 85, minor sprocket 84 is connected with hind axle 85 by click free-wheel clutch 87, drives bicycle.
During the motion of this drive system, by foot-operated 86 drivening rod mechanisms, connecting rod mechanism drives built crank mechanism by pitman shaft 81 and 78 two point of connection of spacing pulley, built crank mechanism accelerates by large minor sprocket wheel 80, the 84 conversion speed ratios of speed-changing mechanism, by speed-changing mechanism, drive back wheels of vehicle axle 85 again, thereby drive bicycle.When built crank mechanism rotates, sprocket wheel 72 on crank spindle 70 does not rotate, under the engagement of chain 73, 75, sprocket wheel on crank eccentric shaft 77 is around sprocket wheel 72 revolution on crank spindle 70 and not rotation, so there is translation and do not rotate in 79, connecting rod, in addition due to the existence of eccentric shaft 77, connecting rod 62 is when doing translation with crank rotation, also take pitman shaft 81 as basic point, under the restriction of the spacing pulley 78 on eccentric shaft 77, do the running that swings up and down of certain amplitude, under the stack of two motions, when connecting rod mechanism drives foot-operated 67 path of motion be one large up and down, " 0 " shape elliplicorbit that left and right is little, this path of motion is more suitable for the application of force operation requirements scrunching up and down of bicycle, also can more effectively do work, crank is carried out to laborsaving driving.
(2), be below the drive system based on the constructed a kind of wheelchair of second technical scheme.
A wheelchair drive system, as shown in Figure 20-Figure 23, comprises built crank mechanism and connecting rod mechanism, and built crank mechanism and connecting rod mechanism are respectively established one group in the both sides of wheelchair, wherein:
Built crank mechanism comprises wheelchair main shaft 88, wheelchair bracing frame axle sleeve 100, crank arm 89, excentric sleeve 95, d-axis 96, sprocket wheel 97, 99 and chain 98, wherein wheelchair main shaft 88 is rotatably connected on wheelchair bracing frame axle sleeve 100, wheelchair bracing frame axle sleeve 100 is fixedly mounted on wheelchair bracing frame 102, one end of crank arm 89 is fixedly connected on wheelchair main shaft 88, the other end of crank arm 89 is rotatably connected on the stage casing of a d-axis 96, d-axis 96 is through an excentric sleeve 95 being fixedly mounted on crank arm 89, the relative d-axis 96 in installation site of excentric sleeve 95 keeps eccentric, the cylindrical of excentric sleeve 95 forms the axle journal being rotationally connected with connecting rod 90.Wheelchair bracing frame axle sleeve 100 left sides are fixedly connected with a sprocket wheel 99, d-axis 96 right-hand members be also fixedly connected with 97, two sprocket wheels of a sprocket wheel 99,97 on same vertical surface and model size all identical with the number of teeth, and be connected by chain 98.The left end of d-axis 96 is fixedly connected with one to the extension 94 of downward-extension, is fixedly connected with a little axle 92 on extension 94, and the sponson of little axle 92 is made the dead sheave 91 with connecting rod 90 sliding block joints.
Connecting rod mechanism comprises connecting rod 90, handgrip 103 and limit assembly 93, one end that connecting rod 90Yu built crank mechanism connects is rotatably connected on the cylindrical axle journal place of excentric sleeve 95, and its end is to downward-extension, extendible portion is provided with limit assembly 93, the spacing connection of dead sheave 91 slip in limit assembly 93Yu built crank mechanism on connecting rod 90, pitman arm extends to upper left side, and end is rotatably connected to handgrip 103.
During the motion of this wheelchair drive system, by handgrip 103 drivening rod mechanisms, connecting rod mechanism drives built crank mechanism by excentric sleeve 95 and 91 two point of connection of dead sheave, built crank mechanism directly drives wheelchair main shaft 88, thereby drive, be fixedly connected on the wheel hub 101 on wheelchair main shaft 88, drive wheelchair.When built crank mechanism rotates, sprocket wheel 99 on wheelchair main shaft 88 does not rotate, under the engagement of chain 98, 97, sprocket wheel on crank d-axis 96 is around sprocket wheel 99 revolution on wheelchair main shaft 88 and not rotation, so there is translation and do not rotate in 90, connecting rod, the mode of the sliding block joint of dead sheave 91 point of connection is set to slide up and down in addition, existence due to excentric sleeve 95, connecting rod 90 is when doing translation with crank rotation, also take dead sheave 91 as basic point, under the restriction of excentric sleeve 95 and d-axis 96, do the swing running of certain amplitude, under the stack of two motions, when connecting rod mechanism drives, the path of motion of handgrip 103 is that a left and right is large, upper and lower little "
" shape elliplicorbit, the application of force operation requirements that this path of motion is more suitable for the front and back push-and-pull of handgrip 103, also can more effectively do work, and crank is carried out to laborsaving driving.
Claims (10)
1.Yi Zhong built crank mechanism, it is characterized in that: comprise crank spindle (1), bracing frame axle sleeve (2), crank arm (5), pitman shaft (7), pitman shaft axle sleeve (9), sprocket wheel (3, 8) and chain (4), wherein crank spindle (1) is rotatably connected on bracing frame axle sleeve (2), one end of crank arm (5) is fixedly connected on crank spindle (1), the other end of crank arm (5) is being rotationally connected a pitman shaft axle sleeve (9), in pitman shaft axle sleeve (9), be rotationally connected pitman shaft (7), pitman shaft (7) is fixedly connected on crank arm (5), pitman shaft (7) sponson relatively its part being fixedly connected on crank arm (5) is eccentric, the point of connection that the eccentric sponson of pitman shaft (7) is connecting rod, bracing frame axle sleeve (2) left side is fixedly connected with a sprocket wheel (3), pitman shaft axle sleeve (9) right side is also fixedly connected with a sprocket wheel (8), two sprocket wheels (3,8) on same vertical surface and model size all identical with the number of teeth, and be connected by chain (4), on the extendible portion of pitman shaft axle sleeve (9), be also provided with connecting rod locating part (10), another point of connection that connecting rod locating part (10) is connecting rod.
2. built crank according to claim 1 mechanism, is characterized in that described crank arm (5) is that by an attaching parts, to be fixedly attached to crank spindle (1) upper, or is directly fixedly connected on crank spindle (1).
3. built crank according to claim 1 mechanism, is characterized in that described crank arm (5) is that by an attaching parts (6), to be fixedly attached to pitman shaft (7) upper, or is directly fixedly connected on pitman shaft (7).
4. built crank according to claim 1 mechanism, the direction that the bearing of trend that it is characterized in that the extendible portion of described pitman shaft axle sleeve (9) needs connecting rod force side to swing while being used in conjunction with according to built crank mechanism and connecting rod is determined.
5.Yi Zhong built crank mechanism, it is characterized in that: comprise crank spindle (11), bracing frame axle sleeve (12), crank arm (15), excentric sleeve (18), d-axis (16), sprocket wheel (13, 17) and chain (14), wherein crank spindle (11) is rotatably connected on bracing frame axle sleeve (12), one end of crank arm (15) is fixedly connected on crank spindle (11), the other end of crank arm (15) is rotatably connected on the stage casing of a d-axis (16), d-axis (16) is through an excentric sleeve (18) being fixedly mounted on crank arm (15), it is eccentric that the relative d-axis in installation site (16) of excentric sleeve (18) keeps, the cylindrical of excentric sleeve (18) forms a point of connection of connecting rod, bracing frame axle sleeve (12) left side is fixedly connected with a sprocket wheel (13), d-axis (16) right-hand member is also fixedly connected with a sprocket wheel (17), two sprocket wheels (13, 17) on same vertical surface and model size all identical with the number of teeth, and be connected by chain (14), the left end of d-axis (16) is fixedly connected with an extension (19), and extension (19) is provided with locating part (20), another point of connection that this locating part (20) is connecting rod.
6. built crank according to claim 5 mechanism, the direction that the bearing of trend that it is characterized in that described extension (19) needs connecting rod force side to swing while being used in conjunction with according to described built crank mechanism and connecting rod is determined.
7. a drive system for bicycle, comprises built crank mechanism, connecting rod mechanism and speed-changing mechanism, and built crank mechanism and connecting rod mechanism are respectively established one group in the both sides of bicycle, jointly drive speed-changing mechanism, it is characterized in that:
Described built crank mechanism comprises hind axle (21), vehicle frame axle sleeve (23), crank arm (29), pitman shaft (31), pitman shaft axle sleeve (33), sprocket wheel (22, 32) and chain (28), wherein hind axle (21) is rotatably connected on vehicle frame axle sleeve (23), one end of crank arm (29) is fixedly connected on hind axle (21), the other end of crank arm (29) is being rotationally connected a pitman shaft axle sleeve (33), in pitman shaft axle sleeve (33), be rotationally connected pitman shaft (31), one end of pitman shaft (31) is fixedly connected on crank arm (29) by attaching parts (30), pitman shaft (31) sponson relatively its part being fixedly connected on crank arm (29) is eccentric, the eccentric sponson of pitman shaft (31) forms the axle journal being rotationally connected with connecting rod (34), vehicle frame axle sleeve (23) left side is fixedly connected with a sprocket wheel (22), pitman shaft axle sleeve (33) right side is also fixedly connected with a sprocket wheel (32), two sprocket wheels (22, 32) on same vertical surface and model size all identical with the number of teeth, and be connected by chain (28), the extension to the right of pitman shaft axle sleeve (33), extendible portion is provided with the limit assembly (39) with connecting rod (34) sliding block joint,
Described connecting rod mechanism comprises connecting rod (34), foot-operated (44) and pulley (38), connecting rod (34) one end is rotatably connected on the eccentric sponson of pitman shaft (31), the elongated end that this end extends to form to the right (36) is installed with a little axle (37), rotating pulley (38) is installed on little axle (37), pulley (38) is limited in the interior sliding block joint that forms of limit assembly (39) groove of pitman shaft axle sleeve (33) extendible portion, and the other end of connecting rod (34) is provided with foot-operated (44);
Described speed-changing mechanism comprises a pair of large miniature gears (24, 25) and a pair of big or small carrier gear (42, 40), wherein big gear wheel (24) is fixedly connected on hind axle (21), on hind axle (21), be also rotationally connected a hind axle axle sleeve (35), in the horizontal-extending part (43) of vehicle frame axle sleeve (23), be installed with bridge gear shaft (41), size carrier gear (42, 40) be made of one and be rotatably connected on bridge gear shaft (41), little carrier gear (40) is meshed with the big gear wheel (24) on hind axle (21), large carrier gear (42) is meshed with the miniature gears (25) on hind axle axle sleeve (35), miniature gears (25) is fixedly connected on the small end of hind axle axle sleeve (35), the large end of hind axle axle sleeve (35) is fixedly connected with click free-wheel clutch (27), power-transfer clutch (27) drives rear wheel hub (26) to drive bicycle thus.
8. a drive system for bicycle, comprises built crank mechanism, and connecting rod mechanism and speed-changing mechanism ，San Ge mechanism respectively establish one group in the both sides of bicycle, it is characterized in that:
Described built crank mechanism comprises crank spindle (53), crank arm (57), pitman shaft (59), pitman shaft axle sleeve (60), sprocket wheel (54, 58) and chain (56), wherein crank spindle (53) is fixedly connected on the vertical fixedly auxiliary (52) of vehicle frame (68), one end of crank arm (57) is rotatably connected on crank spindle (53), the other end of crank arm (57) is fixedly connected with pitman shaft (59), pitman shaft (59) middle part is rotatably connected to pitman shaft axle sleeve (60), pitman shaft (59) sponson relatively its part being fixedly connected on crank arm (57) is eccentric, the eccentric sponson of pitman shaft (59) forms the axle journal being rotationally connected with connecting rod (62), crank spindle (53) left end is also fixedly connected with a sprocket wheel (54), pitman shaft axle sleeve (60) right side is also fixedly connected with a sprocket wheel (58), two sprocket wheels (54,58) on same vertical surface and model size all identical with the number of teeth, and be connected by chain (56), the left side of pitman shaft axle sleeve (60) is installed with the extension (61) extending to the right, and extension (61) is provided with the limit assembly (63) with connecting rod (62) sliding block joint,
Described connecting rod mechanism comprises connecting rod (62), foot-operated (67) and pulley (65), connecting rod (62) one end is rotatably connected on the eccentric sponson of pitman shaft (59), the elongated end that this end extends to form to the right (66) is installed with a little axle (64), rotating pulley (65) is installed on little axle (64), pulley (65) is limited in forming sliding block joint in limit assembly (63) groove on extension (61), and the other end of connecting rod (62) is provided with foot-operated (67);
Described speed-changing mechanism comprises a pair of large miniature gears (55, 49) and one little carrier gear (51), big gear wheel (55) is fixedly mounted on the side of crank arm (57) connecting crank main shaft (53) end, little carrier gear (51) is fixedly connected on bridge gear shaft (50), bridge gear shaft (50) is rotatably connected on the vertical fixedly auxiliary (52) of vehicle frame (68), miniature gears (49) is fixedly connected on one end of hind axle (46), hind axle (46) is rotatably connected on the vertical fixedly auxiliary (52) of vehicle frame (68), big gear wheel (55) is meshed with little carrier gear (50), little carrier gear (50) is meshed with miniature gears (49) again, on hind axle (46), be also fixedly connected with click free-wheel clutch (47), power-transfer clutch (47) drives rear wheel hub (48) to drive bicycle thus.
9. a drive system for bicycle, comprises built crank mechanism, connecting rod mechanism and speed-changing mechanism, and built crank mechanism and connecting rod mechanism are respectively established one group in the both sides of bicycle, jointly drive speed-changing mechanism, it is characterized in that:
Described built crank mechanism comprises crank spindle (70), vehicle frame axle sleeve (71), crank arm (74), eccentric shaft (77), eccentric shaft axle sleeve (76), sprocket wheel (72, 75) and chain (73), wherein crank spindle (70) is rotatably connected on vehicle frame axle sleeve (71), one end of crank arm (74) is fixedly connected on crank spindle (70) by attaching parts (69), the other end of crank arm (74) is fixedly connected on eccentric shaft (77), eccentric shaft (77) middle part is rotationally connected eccentric shaft axle sleeve (76), eccentric shaft (77) sponson relatively its part being fixedly connected on crank arm (74) is eccentric, the eccentric sponson of eccentric shaft (77) is provided with rotating spacing pulley (78), eccentric shaft axle sleeve (76) extends to upper right side, its extendible portion is installed with pitman shaft (81), pitman shaft (81) sponson forms the axle journal being rotationally connected with connecting rod (79), vehicle frame axle sleeve (71) left side is fixedly connected with a sprocket wheel (72), eccentric shaft axle sleeve (76) right side is also fixedly connected with a sprocket wheel (75), two sprocket wheels (72,75) on same vertical surface and model size all identical with the number of teeth, and be connected by chain (73),
Described connecting rod mechanism comprises connecting rod (79) and foot-operated (86), connecting rod (79) one end is rotatably connected on pitman shaft (81), the lower surface of connecting rod (79) has positioning runner, chute is corresponding with the spacing pulley (78) on eccentric shaft (77), form sliding block joint, the other end of connecting rod (79) is rotatably connected to foot-operated (86);
Described speed-changing mechanism comprises a pair of large minor sprocket (80,84) and chain (82), wherein hinge wheel (80) is fixedly connected on crank spindle (70), hinge wheel (80) is connected with minor sprocket (84) by chain (82), minor sprocket (84) is arranged on hind axle (85), minor sprocket (84) is connected with hind axle (85) by click free-wheel clutch (87), drives bicycle.
10. a wheelchair drive system, comprises built crank mechanism and connecting rod mechanism, and built crank mechanism and connecting rod mechanism are respectively established one group in the both sides of wheelchair, it is characterized in that:
Described built crank mechanism, comprise wheelchair main shaft (88), wheelchair bracing frame axle sleeve (100), crank arm (89), excentric sleeve (95), d-axis (96), sprocket wheel (97, 99) and chain (98), wherein wheelchair main shaft (88) is rotatably connected on wheelchair bracing frame axle sleeve (100), one end of crank arm (89) is fixedly connected on wheelchair main shaft (88), the other end of crank arm (89) is rotatably connected on the stage casing of a d-axis (96), d-axis (96) is through an excentric sleeve (95) being fixedly mounted on crank arm (89), it is eccentric that the relative d-axis in installation site (96) of excentric sleeve (95) keeps, the cylindrical of excentric sleeve (95) forms the axle journal being rotationally connected with connecting rod (90), wheelchair bracing frame axle sleeve (100) left side is fixedly connected with a sprocket wheel (99), d-axis (96) right-hand member is also fixedly connected with a sprocket wheel (97), two sprocket wheels (99,97) on same vertical surface and model size all identical with the number of teeth, and be connected by chain (98), the left end of d-axis (96) is fixedly connected with an extension to downward-extension (94), is fixedly connected with a little axle (92) on extension (94), and the sponson of little axle (92) is made the dead sheave (91) with connecting rod (90) sliding block joint,
Described connecting rod mechanism comprises connecting rod (90), handgrip (103) and limit assembly (93), one end that connecting rod (90) is connected with built crank mechanism is rotatably connected on the cylindrical axle journal place of excentric sleeve (95), and its end is to downward-extension, extendible portion is provided with limit assembly (93), limit assembly (93) on connecting rod (90) slides spacing connection with the dead sheave (91) in built crank mechanism, and pitman arm extends to upper left side, and end is rotatably connected to handgrip (103).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320624523.4U CN203473174U (en) | 2013-10-11 | 2013-10-11 | Combined crank mechanism |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320624523.4U CN203473174U (en) | 2013-10-11 | 2013-10-11 | Combined crank mechanism |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203473174U true CN203473174U (en) | 2014-03-12 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201320624523.4U Withdrawn - After Issue CN203473174U (en) | 2013-10-11 | 2013-10-11 | Combined crank mechanism |
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| CN (1) | CN203473174U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103482003A (en) * | 2013-10-11 | 2014-01-01 | 梁正卿 | Combined crank mechanism |
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2013
- 2013-10-11 CN CN201320624523.4U patent/CN203473174U/en not_active Withdrawn - After Issue
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103482003A (en) * | 2013-10-11 | 2014-01-01 | 梁正卿 | Combined crank mechanism |
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