CN2827866Y - Chain transmission labour-saving device - Google Patents

Abstract

The utility model relates to a chain transmission labor-saving device which is mainly composed of a chain and a chain wheel, wherein the chain wheel is connected with a wheel shaft. The utility model is characterized in that the chain wheel is composed of a big chain wheel and a small chain wheel which are parallelly connected; the chain transmission device comprises a component with two connecting rods, a clutch component, a reversing component of an inclined plane, a shifting component and an operating component. The utility model is a novel chain transmission device which changes the traditional chain transmission way; the utility model has the advantages of good meshing performance of chain teeth in the transmission process, high reliability of a fixed position, large transmission diameter difference, obvious labor saving and large loading capability. The utility model can be used for various bicycles and tricycles, and can be especially used for loading type manpower vehicles; the utility model is a novel chain transmission labor-saving device.

Description

The chain gear work-saving device

Technical field

The utility model relates to a kind of driving device that is used on bicycle, the three-wheel vehicle, particularly a kind of chain gear work-saving device.

Technical background

The basic structure of the transmission system of bicycle is stepped gear, group chain device, cable operated device, thereby be to make chain transmission on the sprocket wheel of different-diameter change the device of transmission speed, this device is in motion process, when group chain device pushes another fluted disc with chain by a fluted disc, because sprocket does not mesh, sprocket collision and strong friction can take place when bearing load, though some improves now, but basic shortcoming still exists; Be will increase drive diameter just the fluted disc number of plies realizes on the cone pulley by increasing on the other hand, the increase fluted disc number of plies has just increased and has axially taken size.The manpower speed of a motor vehicle does not need a variety of gears in the use of reality.

Summary of the invention

In order to overcome the defective of present speed change chain gearing, the utility model provides a kind of technical scheme of new chain gear work-saving device.The technical program has adopted two kinds of the most frequently used gears, and is economical and practical.

The technical solution of the utility model is to implement like this: a kind of chain gear work-saving device, mainly form by chain and sprocket wheel, sprocket wheel is connected with wheel shaft, it is characterized in that, sprocket wheel is made up of the sprocket wheel of two parallel connections of size, and chain gearing includes double link parts, clutch components, inclined-plane commutation parts, shifting part and control member;

The double link block construction is, bearing is captiveed joint with protruding disk chassis, unclamp and tiger is rotating is connected on the bearing, tiger is made up of 1 pair of symmetrical claw-like part, every pawl is made up of two parts that are rotatably connected, be connected with dop on the double link, bearing is fixedly connected with double link, double link both sides sponson up and down all connects planar slide plate and pellet shot from a slingshot bearing spring, two blocks of planar slide plates are provided with roller, also be connected with pivot link and synchronous connecting panel on the roller shaft, pivot link is made up of two relatively turnable strip parts;

The clutch components structure is, in four frid both sides, be provided with the ejection baffle plate, the ejection baffle plate is made up of three parts that can rotate mutually, interior right-hand member is rotatably connected with the pad stake, the two ejection baffle plates outsides is provided with protruding disk chassis bonded assembly clutch nail and is fixedly connected on and pushes away the hook support plate on four frids, pushing away hook inserts in the clutch nail hole, four frids are provided with Eight characters supporting plate, clamp and Eight characters supporting plate are rotatably connected, following Eight characters supporting plate one side is the pad stake, and the T-shaped turning block is provided with the crosspin of captive joint, and the T-shaped turning block is rotating to be connected on four frids, extension spring one end is fixed on protruding the turning over, and other holds hook joint on the ejector pin plate washer;

The structure of inclined-plane commutation parts is, protruding disk chassis is discoid, one side is provided with the step quadrant, the plate both sides are identical sprocket with sprocket wheel, cite approvingly sprocket, the plate diad is provided with axle bed, axle on the bridge work is rotatably connected with axle bed, the rotating axle sleeve that is connected with in protruding disk chassis center, connect the bispin plate by pin on the protruding disk chassis quadrant, also be arranged with a pair of rotor plate on the disk of protruding disk chassis, the inclined-plane is rotated in rotor plate left side all one of epirelief, rotation strip all has been rotatably connected on the rotor plate, two rotation strip ends are rotating to be connected on the apical axis plate, and apical axis plate end in addition is the support axle, and the support axle slides in extension spring connects board slot, the extension spring connecting panel is provided with back stop, and skid plate is connected on four frids;

The structure of shifting part is movable protruding dish and protruding dish effector, and the structure of movable protruding dish is that movable protruding dish and sprocket wheel are arranged side by side, protruding disk chassis and axletree are rotatably connected, protruding disk chassis is fixedly connected with four frids, on protruding disk chassis, double link and both sides two cover arrangement of clutch is housed; Big plate of effector and wheel shaft are not rotationally connected, the big front edge of board of effector is established pulley, hawser is by the positive and negative pulling of pulley, end connects with the mechanical gripping palmistry by turning handle in addition, universal ball journal and recessed falcon plate are rotatably connected, the mechanical gripping hand includes the slide block that slides in chute, the handgrip clamp is two block parts that are rotatably connected, one end is connected mechanical gripping on hand, end is rotatably connected with four connecting rods that slide in addition, clamp pull bar spring one end is connected on the pull bar sliding shoe, end is connected on the base plate in addition, handgrip shuttle frame is located in the chute between effector mainboard and the big plate of effector, in the spring positioning plate assembly, the locating plate rotating shaft is rotating to be connected on the effector mainboard, seesaw is connected with spring, and rotating being connected on the spring locating plate, spring locating plate back is provided with a profile of tooth stake that is connected as a single entity with the spring locating plate, holder shoulder corner is rotatably connected on the spring locating plate, both ends of the spring is connected the holder shoulder and locatees on the cover plate, holder shoulder back is the location cover plate, it is that the rotating mainboard that is connected of big wedge of wedge shape props up in the stake that the effector mainboard is provided with two ends, annular slab props up in the stake by the rotating mainboard that is connected of axle of self, the spline connecting plate is rotatably connected by connecting plate and recessed falcon plate, stumble to nail on and establish the board-like nail stage clip of stumbling, connecting plate tie rod one end is connected on the locating pin by spring, holds in addition on the spline connecting plate that is rotatably connected, after receiving the chain device, be provided with chute, receive chain device two ends and be provided with receipts chain miniature gears, spring one end is connected with receipts chain device, and end is connected on the effector mainboard in addition:

Control member is installed in to be handled on the big plate, handle being connected on the axletree that big plate do not rotate, hawser is fixedly connected on the fixed block, four connect other end of spud pile is rotatably connected with the fulcrum latticing, four connecting rods that slide have been rotatably connected on the pull bar sliding shoe, four connecting rods that slide are rotatably connected by 3 pairs of block parts, and manipulating handgrip is connected on the handlebar by hawser.

By the enforcement of technique scheme, reached the purpose of this utility model substantially.The utility model is the phenomenon that has " race chain " according to existing bicycle, according to its path of motion and design-calculated, mainly be by the part on the protruding dish change the bridge work position, the clutch nail is connected with sprocket wheel by turns, does not bear gear teeth operational forces.Principle of work of the present utility model is, when promoting the operator handle, hawser is crossed pulley and is turned mechanical handgrip is moved toward the axle center, the stake of promotion profile of tooth is pushed the spring locating plate open and is entered Eight characters supporting plate as the Yishanmen sample, Eight characters supporting plate overcomes the elastic force of clamp spring again clamp is pushed in the clutch nail draw-in groove, the clutch nail is blocked, the machinery handgrip contacts with drag hook, moved pivot link by mechanical handgrip trying hard to recommend of continuing to move toward the axle center, roller is promoted, two inclined-planes entered a three-flute respectively about roller below the machinery handgrip and the hawser of pulling back again after drag hook is connected, pivot link was turned right and slided; Two pivot link heads slide and make the pulley on the connecting rod turned right by inclined-plane power, thereby making the T-shaped rotation turn to turn right moves, T-shaped is rotated the crosspin that turns and is slided at bispin plate two, make on it right-hand rotation of bispin plate low high, make synchronous bridge work lower end and draw sprocket and align by coaxial pin, the upper end falls into the hinge wheel plane; Angular contact in bottom roller and skid plate following makes the skid plate counter-rotating, rotor plate interior angle sled is moved and is in and swings to; Decide extension spring by connecting strap, apical axis plate and rotor plate and form triangle, will be in the rotor plate of swinging to and fix, simultaneously rotor plate is in and relies on; Upper roller promotes the ejector pin plate washer and moves to right, stressed and the pulling clutch extension spring of the lower jaw of ejector pin baffle plate steel wire drag hook for public use, the upper jaw is then along with the compressed energy-storage spring of turning right, energy stroage spring pushes away hook toward moving right by elastic force, push away hook and the clutch nail is pushed the hinge wheel tooth root by the rotating shaft that pushes away on the hook support plate, because of clamp blocks the clutch nail can not move, energy stroage spring is had to energy storage: because the ejector pin plate washer moves to right, make rand under the ejector pin plate washer will go up of pad stake and prize outside the four frid circular arcs, make the spring locating plate become the backing plate that to get back to balance position; Roller slides to four frid chutes, pivot link is moved to right until double link, the handle that unclamps of tiger is collided with dop, tiger has just been blocked dop: and the another side mechanical gripping pulls moving drag hook, roller moves to right, make mechanical handgrip connecting rod and handgrip shuttle frame mouth collide and move into handgrip shuttle frame, the handgrip clamp unclamps drag hook and gets back to balance position; The machinery handgrip is return, Eight characters supporting plate adds the thrust of clamp spring and gets back to balance position, clamp withdraws from from clutch nail notch, the clutch nail enters the hinge wheel tooth root and forms connection by the thrust of energy stroage spring: mechanical handgrip is return balance position, the spring locating plate also will be got back to balance position by return spring, is all lived holder shoulder and protruding intertwining position by last pad dolly, protruding dish is held at the end, but protruding dish changes together with flywheel.Just get back to balance position after the same underlay stake of holder shoulder is brushed past, wait for after protruding dish operation one is enclosed again protruding pan arrest being lived; Draw sprocket to bridge work when chain is entered down by the flywheel small tooth plate, chain length needs to increase, force receive the chain device overcome the pulling force of receiving the chain spring along gradually high annular slab by slips of turning right of chute mouth, receive right cunning of chain device and just chain sent into the large fluted disc plane; The spline connecting plate withdraws from another side wedge head with receiving moving to right of chain device under the nail-plate of stumbling, the nail of the stumbling pressure of the nail stage clip nail of will stumbling of being stumbled pushes handgrip shuttle frame, because of receiving being connected of recessed falcon plate on protruding falcon and the spline connecting plate on the chain device, chain meshes with hinge wheel when protruding dish is spent with commentaries on classics about 300 with flywheel, at this moment unclamp the arc edge that enters the spring locating plate is squeezed, tiger is become less severe: ejector pin plate washer lower jaw is subjected to the pulling force with steel wire bonded assembly clutch extension spring outward, and the clutch nail is retracted from hinge wheel; Make rand under the ejector pin plate washer that the underlay stake is also retracted (the underlay stake also is subjected to the concave profile of spring locating plate to force to advance four frid outer arcuate faces, is to force to throw off safety device) in the four frid arcwall faces with retracting of ejector pin plate washer; The ejector pin plate washer retracts and just promotes the roller backward, thereby makes tiger leave dop; Because clutch nail is pulled, protruding dish and divided flywheel from, hold because of inertia is rotated further by the spring locating plate, cushion and be parked in desired location, chain just transfers on deep bid and moving.

Chain passes to small tooth plate by large fluted disc, roller enters two, four grooves of four frids from the rolling of last rolling inclined-plane: upper roller promotes skid plate just to be changeed, rotor plate makes the inclined-plane of rolling be changed to the last bar limit on two inclined-planes in the promotion, bottom roller starts another set of arrangement of clutch and repeats original action, and will go up the pad stake and release four frid arcwall faces and prepare pad outward and live the spring locating plate and get back to balance position; Rotation is turned and is made reverse turn, makes bridge work counter-rotating, and the higher authorities draw sprocket to flat, and following falls into the hinge wheel plane, the chain warp bridge work is entered fixedly draw sprocket to arrive minor sprocket again.When the handgrip clamp unclamped drag hook, the pull bar sliding shoe had bumped and has moved the nail of stumbling, and big wedge is also promoted reversing, and preceding wedge withdraws from below annular slab, and back spline inserts the annular slab rear portion, and it is parallel with minor sprocket that annular slab is changed into, and is not gradually high oblique ring.At this moment be in high-order receipts chain device and retracted the minor sprocket plane by the chute mouth by annular slab, make chain one end on the hinge wheel plane, an end is but received the chain device and retracted the minor sprocket plane, and is parallel with the bridge work of transposition.When following clutch nail inserts the hinge wheel tooth root,, receive the chain device and be subjected to the pulling receipts chain of spring to return balance position with regard to because the radius of gyration shortens, and chain length requirement reduces; Being subjected to receiving chain with receipts chain device bonded assembly spline connecting plate returns the pulling of power and makes preceding wedge embed the nail-plate of stumbling.The nail of will stumbling edges away from handgrip shuttle frame and by spline connecting plate turning cylinder big wedge is shifted onto prepositionly, makes annular slab still be high oblique ring gradually, and all return to the position of chain when rotating on minor sprocket.

The utility model is a kind of later-model chain gearing, it has changed traditional chain transmission mode, the utility model sprocket meshing performance in transmission process is good, fixed position reliability height, and the drive diameter difference is big, obviously laborsaving, carrying lotus ability is big, applicable to various bicycles, three-wheel vehicle, particularly the heavy type rickshaw is a kind of later-model chain gear work-saving device.Below will the utility model is described in further detail with drawings and Examples.

Description of drawings

Fig. 1 is the utility model front view

Fig. 2 assembles scheme drawing for the utility model after remove handling big plate, sprocket wheel

Fig. 3 is the utility model double rod assembly scheme drawing

Fig. 4 is the utility model four Tray assembly front views

Fig. 5 is the utility model four Tray assembly left views

Fig. 6 is the utility model ejector pin baffle plate assembly scheme drawing

Fig. 7 removes the inclined-plane reversing arrangement scheme drawing of double link, four frids for the utility model

Fig. 8 is the utility model part bridge work (37) front view

Fig. 9 is the utility model inclined-plane reversing arrangement part assembly relation scheme drawing

Figure 10 is the utility model shifting part scheme drawing

Figure 11 is the utility model shifting part B-B cutaway view

Figure 12 is the utility model shifting part A-A cutaway view

Figure 13 is the utility model shifting part part assembly relation scheme drawing

Figure 14 is the utility model mechanical gripping hand unit scheme drawing

Figure 15 is the utility model sprocket wheel (76) cutaway view

Figure 16 is the utility model machinery handgrip and profile of tooth stake working state schematic representation

Figure 17 is the utility model machinery handgrip, Eight characters supporting plate and clamp working state schematic representation

Figure 18 is the utility model four frids, double link, roller and inclined-plane working state schematic representation

Figure 19 is that working state schematic representation is turned in the utility model bridge work, bispin plate and T-shaped rotation

Figure 20 pushes away hook and two kinds of working state schematic representations of clutch nail for the utility model

Figure 21 receives chain device working state schematic representation for the utility model

Figure 22 is the utility model roller displacement diagram

The specific embodiment

Embodiment

Present embodiment is that existing load bicycle back vent is widened about 16 millimeters, the bigger sprocket wheel of two transmitting ratio difference is parallel to each other and is fixedly connected as a chain wheel set ((76), protruding disk chassis (1) center is provided with axle sleeve ((20), external diameter is bigger than the small tooth plate tooth top circle on the sprocket wheel, protruding disk chassis one side is provided with a dual-side sprocket, the outside circular arc is a bit larger tham the fan-shaped plan of large fluted disc tooth top circle, see Fig. 7, the sprocket of both sides is for fixedly drawing sprocket, it is parallel with sprocket wheel fixedly to draw sprocket, sector is crossed the axis place and is established an axle bed of captiveing joint with sector, T-shaped bridge work (37) has been rotatably connected in the axis hole, two of bridge work is facing to the chain that passes in and out from flywheel, after movable bridge work inserts axle bed, sprocket is in the centre of two fluted disc distances, bridge work is just being changeed can draw sprocket to being connected into a fluted disc with a side, and counter-rotating is drawn sprocket to being connected into another fluted disc with opposite side, the basic configuration of Here it is movable protruding dish.On the protruding lower wall of trying to get to the heart of a matter, the double link group is housed, see Fig. 3, both sides two cover arrangement of clutch, protruding dish effector is sleeved on the protruding dish, and the big plate of effector (3) in the connection is connected whole device on the bicycle rear shaft rod at last, ((38) are parked in the holder shoulder of spring locating plate (65), and (on (64), protruding dish effector then is that the link (78) by the back is fixed on the back vent crossbeam rear portion and draws two hawsers ((5) direct screening tap operator handle to protruding dish by the underlay stake.

Chain at the cabling on protruding dish and the flywheel is: one, turn right when time fixedly drawing sprocket and dock when movable bridge work, chain is passed to by small tooth plate and draws sprocket and enter bridge work, passes to large fluted disc from bridge work again; Two, when fixedly drawing sprocket and docking, enter movable bridge work with last when the counter-rotating of movable bridge work, cross from movable bridge work again and draw sprocket to small tooth plate by the chain on the large fluted disc.The protruding dish of this route must combine with flywheel with circling.Movable bridge work is to put up a bridge between flywheel two fluted discs, therefore, there is an angle between movable bridge work and two fluted discs, removing the tooth of movable bridge work and the crown limb of flywheel two fluted discs fines away a little again, crown also can insert the chain hole and makes it not jump outside the chain when allowing chain minor shifts occur, still after will solving following technical matters, could realize that chain cabling function is normal.

For the positive and negative little commentaries on classics of movable bridge work (37) energy, elder generation's bispin plate of suit (58) on movable bridge work axle, see Fig. 7, ((59) are fixing with pin, become the synchronous shifting board of movable bridge work, the both sides sponson all connects planar slide plate (51) and pellet shot from a slingshot bearing spring pressing plate (27) about double link, all there are two pairs of overhanging herringbone forks at bispin plate two ends, two has respectively been injected T-shaped and has been rotated the axle that turns (32), crosspin on the axle is enclosed within the groove, the rotation of axle can be become the up-and-down movement at bispin plate two, see Figure 19, like this, the up-and-down movement of bispin plate is exactly that two T-shaped are rotated the synchronous positive and negative rotation of turning, the top that the axle that the T-shaped rotation is turned passes four frids (2) is that a knothole tubular axis links to each other, and pivot link (30) insertion two T-shaped that link to each other with synchronous connecting panel (24) are rotated interior the slip earlier of the sliding eye that turns and afterwards rotated, and T-shaped is rotated and turned the crosspin (53) that is provided with captive joint.But solve pivot link insert two T-shaped rotate turn after both problems of rotating, see Figure 19, protruding disk chassis central axis hole edge, fix a bearing (17), double link (16) can be horizontally slipped in the above, closed connection is carried out to double link in both sides, right side sponson about double link, all rotating connection planar slide plate (51) and pivot link (30), promptly, planar slide plate 2/3 place and 1/3 place of pivot link to the right is rotatably connected with the axle that roller (26) is housed, and like this, two rollers all are contained on the pivot link lower flat sliding panel.When double link along bearing slips of turning right, when pivot link is also slided, T-shaped is rotated turn the change rotation direction to the right thereby change direction of slip by roller, the inclined-plane rolling reversing arrangement below Here it is the roller is seen Fig. 7.

The both sides of four frids are fixed on the disk by screw, four frids have four rolling grooves, constitute three protruding tops between four rolling grooves, all rotating two rotor plates (22) that connecting on the protruding top of both sides symmetry, two rollers (8) slide to a three-flute of four frids respectively when doing turn: slide to two respectively when making reverse turn, four grooves, utilize roller to promote the arrangement of clutch of groove one and the skid plate interior angle of groove three, promote the arrangement of clutch of groove four and the same skid plate of groove two next time again, skid plate is prized by turns, promote the commutation of rolling inclined-plane, also make arrangement of clutch carry out clutch by turns.The rolling inclined-plane that rolls for two rollers is the isoceles triangle piece, match with the turning cylinder arc in the right side, be fixedly connected on the right outer end of two rotor plates (22) respectively, an end that is all connecting rotating connecting strap (21) on two rotor plates, the other end of two connecting straps is connected on the extension spring connecting panel (56) with apical axis plate (23) again, rotating being connected of holding in addition of apical axis plate supportted on the axle (25), rotor plate back stop (57) is connected on extension spring connecting panel and the pin (59), when the extension spring connecting panel stressed, the apical axis plate is swung on one side, make rotor plate rotate the back by just being stablized (position of this piece is to rely on, and another piece is to swing to) toward the central axis hole edge.According to Fig. 7, if being in, last rotor plate relies on, following rotor plate be in to, so, the support axle point that adds the apical axis plate in two run-on points of swinging to the rotor plate connecting strap is 3 points, see facing of Fig. 7 with an A, B, C, because what the pulling force of rotor plate back stop formed is that (drift angle should be greater than 175 degree for the triangle of drift angle with apical axis nail B, less than 180 degree), to be in the rotor plate of swinging to fixes, as can be seen from Figure 22 roller by position 8 to the position 1, when roller is rolled into the inclined working upper end in the bottom of lower inclined plane, the following stressed position that also do not change of lower inclined plane, what rotor plate is changed rely on and swing to is to be contained in the skid plate (28) on the axis hole below the support axle, skid plate is transposition contacts to the interior angle of two rotor plates, when the rolling inclined-plane being replaced, just by original a, c becomes b for the rolling inclined working, and d is the rolling driving surface, will make to be in the last rotor plate of swinging to originally and to change into and rely on, and be in the following rotor plate that relies on originally and transfer to and swinging to.Because after upper roller enters rolling groove along the rolling inclined-plane, promote one of skid plate, the other end then prizes and is in the following rotor plate interior angle that relies on, it is transferred to swing to, because the bar that is rotationally connected is stressed, will go up rotor plate and transfer to and relying on, the rolling inclined-plane also just transfers b to, d, simultaneously, pivot link (30) is rolled by roller to move right, make it walk around the rotation dead point, it is moving that the do right-hand rotation is turned in the pivot link head drive T-shaped rotation that makes the insertion T-shaped rotate the sliding eye that turns, from and that bispin plate (58) is gone up is low high, make one of bridge work with draw sprocket down to putting down, the other end is in the large fluted disc plane, the driving device that these are a series of is exactly an inclined-plane rolling reversing arrangement.Because movable protruding dish control position is in to erect and swings to, roller when 1 position of Figure 22 and 5 positions and inclined working some distances are arranged, can produce wheel during starting, so establish pellet shot from a slingshot bearing spring (27), roller is mediated.Rolling reversing arrangement in inclined-plane of the present utility model utilizes the inclined-plane to walk around the dead point, and the pivot link head is rotated and reverse, and this is another new mode of motion of walking around the dead point.

The position of arrangement of clutch is in the both sides of the inclined-plane rolling reversing arrangement on the disk of protruding dish, rolls to two grooves in the both sides of four frids by roller arrangement of clutch is rotated manipulation.The arrangement of clutch symmetry is located at the radial centre lines both sides of four frids, and positive is the boundary with Eight characters supporting plate (33), and the above underlay stake in the back side is the boundary.See Fig. 4,5, clutch extension spring (18), ejector pin baffle plate (have on (29), both sides, the back side and arcwall face: energy stroage spring (54), push away hook (52), clutch nail (34), push away the lever plate that hook axle support plate (55) links to each other with rand under the ejector pin baffle plate and fill up; Have on the arcwall face of front: clamp (36), Eight characters supporting plate and rotating shaft thereof.From the clutch extension spring, just pass behind the four frid holes ejector pin baffle plate, energy stroage spring earlier, to push away the hook series connection fixing from the steel wire of Fig. 5,6: buckles.The thrust that is subjected to roller when the ejector pin baffle plate to the right, ejector pin baffle plate lower jaw place borrows the steel wire drag hook that the clutch extension spring is elongated, and being moved to right by the ejector pin baffle plate upper jaw, energy stroage spring is compressed, so energy stroage spring just promotes hook, push away hook and then push the clutch nail to hinge wheel tooth root: then be clutch extension spring direct pull ejector pin baffle plate lower jaw when separating, the clutch nail is retracted by the pivot shaft that pushes away on the hook axle support plate.(angle of chamfer of clutch nail joint contact is the protruding dish reversing of prevention; When running into reversing, the clutch nail borrows the angle of chamfer to return, and does not play clutch action).But the clutch order of clutch nail must be controlled, and Here it is relates to three parts that place four frid curved front.Eight characters supporting plate is strutted by mechanical handgrip, and clamp (36) just blocks clutch screw top portion groove, makes the clutch nail also not play clutch action, and the clutch step is last step of protruding dish.

The chain shift assembly is exactly that chain is taken turns to by a chain in the process of another sprocket wheel, in advance chain is moved to the tooth that will arrive, and makes the chain and sprocket that does not also advance tooth to flat, in order to avoid cause the device of jumping chain, this device is to be finished by the displacement of receiving the chain device, need not adjust.This device is to be contained on the shell of handgrip shuttle frame (41) of mechanical handgrip (6), and is in receiving the slit of chain devices (9) and shell.Big wedge (70) is fixed on mainboard by rotating shaft and props up in the stake (49), inserts annular slab (71) bottom as the axe knife-edge part, and annular slab has just become gradually high oblique ring, and receipts chain device is crossed chute (48) and just chain can be delivered to the hinge wheel plane; Otherwise, back spline inserts the annular slab rear portion, annular slab just becomes to be parallel to the annular slab on minor sprocket plane by rotating shaft, on the big wedge the rotating nail (46) of stumbling is housed, the nail stage clip (68) of stumbling, spline connecting plate (72), connecting plate tie rod (69), recessed falcon plate (10) stumble and follow closely the circular hole that has passed through big wedge, enter handgrip shuttle frame after passing shuttle frame arcuate socket, one end of spline connecting plate inserts the wedge head of the nail-plate of stumbling, and the other end is connected on the universal ball journal (73) of receiving the chain device one to be had on the plectane that is passed by ball journal of falcon.Receipts chain device is shifted to a high position and has promptly been arrived the hinge wheel plane, the spline connecting plate will withdraw under the nail-plate of stumbling, the nail stage clip of being stumbled will be stumbled to follow closely and will be pressed into handgrip shuttle frame, so that bumping when getting back to balance position, mechanical handgrip moves the nail of stumbling, big wedge just with the arcuate socket displacement, withdraws from big wedge front under annular slab, the back spline of big wedge inserts, annular slab moves flat, by chute and receipts chain device chain is displaced to the minor sprocket plane.

The utility model also is provided with the spring locating plate, this device can make protruding dish and flywheel with circling, separate also immediately and can stop at desired location, movable protruding dish and flywheel are with circling, through unclamping the frictional displacement of (12) and shelves bars (14) and the pad stake friction that resets, remaining power just is pressed in the holder of spring locating plate and takes on (64).But make movable protruding dish be parked in desired location, to guarantee that mechanical gripping enters movable protruding dish for subordinate time and realizes being connected with drag hook.Spring locating plate (65) is connected handgrip shuttle frame mouth place by locating plate rotating shaft (62), also be provided with pull back spring (67) in the locating plate rotating shaft, the back is mechanical handgrip and handgrip shuttle frame, at this moment integral structure relation is, movable protruding dish is to flywheel small tooth plate suit: movable protruding dish effector is again to the protruding dish suit of activity; Handgrip shuttle frame mouth is connected with Yishanmen with four frid outer arcuate edges on the movable protruding dish, this fan door is exactly the spring locating plate, its shape is: the bottom at this fan door allows holder take on suit with an axle, have only the inside that holder shoulder length arm is just arranged, holder shoulder horizontal stripe links to each other with extension spring (66) with pressing plate, the holder shoulder is provided with location cover plate (75), the top is provided with spring (61), the holder shoulder links to each other with two springs, the elastic force that these two spring stress just overcome spring (60) ejects seesaw (63), and the centre at the spring locating plate back side is profile of tooth stake (39), this profile of tooth stake makes the mechanical gripping hand push open the spring locating plate, when mechanical handgrip is return balance position, the profile of tooth stake drops in the shuttle frame notch, does not influence the spring locating plate and flushes with four frid arc limits.

The machinery handgrip is for being located at the slidably device in the shuttle frame between effector mainboard (74) and the big plate of effector, control by manipulating handgrip (11), the back is by pulley (4) connection cable, and fix by the spud pile hawser on the pulley, cross the pulley reverses its direction, the pulling hawser, handgrip clamp (40) will block drag hook, if hawser pulls back, will make tiger (13) block dop (15) simultaneously the handgrip clamp unclamp drag hook by the dextroposition plate and get back to balance position.Hawser is drawn from the effector back through pulley (4).Embed handgrip clamp (40) and clamp pull bar in the chute on the machinery handgrip fwd square, the part that protrude as ear on the square two sides is during with Eight characters supporting plate (24) contact separation, makes Eight characters supporting plate get back to helping of balance position and draws contact.The right side of its square at first is that two parallel slide shafts are captiveed joint with square, the other end of slide shaft is rotationally connected by turning handle with pulley (4) again, one of centre link sliding shoe (44) and extension spring (42) is connected, the other end is connected with square, the clamp pull bar moves slide block is slided on two slide shafts, strengthen the stability of clamp pull bar, four connecting rods (43) that slide have been rotatably connected on the pull bar sliding shoe (44), slide four connecting rods by (43a), (43b) reaching (43c), 3 pairs of block parts are rotatably connected.

Mechanical gripping of the present utility model pulls hook handgrip clamp displacement when withdrawing from, each connecting rod rotates, fulcrum is (47), spring makes the handgrip clamp be in the state of blocking, can make connecting rod position be in state of equilibrium again, when the handgrip clamp is pushed when being connected with drag hook forward, the handgrip clamp pushing drawing rod of turning right slides, elongate spring, allow drag hook enter the handgrip clamp; Turn left when (43a) is stressed, sliding shoe (44) is moved to right, promote right slip of pull bar of handgrip clamp, elongate spring, the handgrip clamp can unclamp again, the power of both direction plays unidirectional effect, and putting in place of the design rationality of mechanical handgrip and operation push-and-pull solves push-and-pull and put in place easily and reliable in function.

If will increase power, can realize also that in certain scope increase power and increase the flywheel large fluted disc exactly, and the problem that the increase fluted disc brings is also simple, for example movable protruding dish mainly is to increase the covering of the fan plate, enlarges the bridge work transmission radius; To the change of the protruding dish effector of activity, also mainly change axis hole eye position, other changes, but very simple.

The utility model can accomplish that sprocket wheel and chain engages are effective, and positional stability is good, and this all provides condition for heavy lift, does not resemble the original chain of dialling, and makes tooth " climb over the walls and crosses " easily and sprocket takes place collides and strong wear.

The utility model is little owing to taking axial dimension, also can be retrofitted on the single speed bicycle and use, for example will be filled on the load bicycle, that just only changes the girder shape on back vent small flywheel one side and suitably relaxes, chain also just extends, and other is not done to change and can load onto use.

Claims (1)

1, a kind of chain gear work-saving device, mainly form by chain and sprocket wheel (76), sprocket wheel is connected with wheel shaft, it is characterized in that, sprocket wheel (76) is made up of the sprocket wheel of two parallel connections of size, chain gearing includes double link parts, clutch components, inclined-plane commutation parts, shifting part and control member

The double link block construction is, bearing (17) is captiveed joint with protruding disk chassis (1), unclamp (12) and tiger (13) is rotating is connected on the bearing (17), tiger is made up of 1 pair of symmetrical claw-like part, every pawl is made up of two parts that are rotatably connected, be connected with dop (15) on the double link, bearing is fixedly connected with double link (16), double link right side sponson up and down all connects planar slide plate (51) and pellet shot from a slingshot bearing spring (27), two blocks of planar slide plates (51) are provided with roller (26), also be connected with pivot link (30) on the roller shaft, pivot link is made up of two relatively turnable strip parts;

The clutch components structure is, be provided with ejection baffle plate (29) in two grooves up and down at four frids and synchronous connecting panel (24), the ejection baffle plate is made up of three parts that can rotate mutually, interior right-hand member is rotatably connected with pad stake (38), the two ejection baffle plates outsides is provided with protruding disk chassis (1) bonded assembly clutch nail (34) and is fixedly connected on and pushes away hook support plate (55) on four frids, (insert in the clutch nail hole (52) to push away hook, four frids are provided with Eight characters supporting plate (33), clamp (36) is rotatably connected with Eight characters supporting plate, following Eight characters supporting plate one side is the pad stake, T-shaped turning block (32) is provided with the crosspin (53) of captive joint, the T-shaped turning block is rotating to be connected on four frids, extension spring (18) one ends are fixed on the protruding disk chassis, and end is connected on the ejector pin plate washer in addition;

The structure of inclined-plane commutation parts is, protruding disk chassis (1) is discoid, one side is provided with the step quadrant, the plate both sides are identical sprocket with sprocket wheel, cite approvingly sprocket, the plate diad is provided with axle bed, axle on the bridge work (37) is rotatably connected with axle bed, the rotating axle sleeve ((20) that is connected with in protruding disk chassis center, connect bispin plate (58) by pin (59) on the protruding disk chassis quadrant, also be arranged with a pair of rotor plate (22) on the disk of protruding disk chassis, the rotor plate left side is triangular ramp of epirelief all, rotation strip (21) all has been rotatably connected on the rotor plate, two rotation strip ends are rotating to be connected on the apical axis plate (23), and apical axis plate right-hand member is support axle (25), and the support axle slides in extension spring connecting panel (56) groove, the extension spring connecting panel is provided with back stop (57), and skid plate (28) is connected on four frids;

The structure of shifting part is movable protruding dish and protruding dish effector, and the structure of movable protruding dish is that movable protruding dish and sprocket wheel are arranged side by side, protruding dish (1) is rotatably connected with axletree, protruding disk chassis is fixedly connected with four frids (2), on protruding disk chassis, double link and both sides two cover arrangement of clutch is housed; Effector turns over big plate (3) and is not rotationally connected with wheel shaft, effector turns over and establishes mechanical handgrip and chute on the big plate, hawser (5) is by pulley (4) pulling, end links to each other with mechanical handgrip (6) in addition, universal ball journal (73) is rotatably connected with recessed falcon plate (10), handgrip clamp (40) is two block parts that are rotatably connected, one end is connected on the mechanical handgrip (6), end is connected with four connecting rods (43) that slide in addition, on clamp pull bar spring (42) the one end cylinder lever connecting rod sliding shoes (44), end is connected on the base plate (6) in addition, handgrip shuttle frame (41) is located at the below of effector mainboard (74), in the spring positioning plate assembly, locating plate rotating shaft (62) is rotating to be connected on the effector mainboard, seesaw (63) is connected with spring (60), and rotating being connected on the spring locating plate (65), be provided with a profile of tooth stake (39) that is connected as a single entity with the spring locating plate in the middle of the spring locating plate back, holder shoulder (64) corner is rotatably connected on the spring locating plate, spring (66) two ends are connected the holder shoulder and locate on the cover plate (75), holder shoulder upper end is provided with spring (61), holder shoulder back is the location cover plate, it is that the rotating mainboard that is connected of the big wedge (70) of wedge shape props up in the stake (49) that effector mainboard (74) is provided with two ends, annular slab (71) props up in the stake by the rotating mainboard that is connected of axle of self, spline connecting plate (72) is rotatably connected by connecting plate and recessed falcon plate (10), stumble and establish the board-like nail pressure spring plate (68) of stumbling on the nail (46), connecting plate tie rod (69) one ends are connected on the locating pin by spring, other holds rotating being connected on the spline connecting plate, after receiving chain device (9), be provided with chute (48), receive chain device two ends and be provided with receipts chain miniature gears ((14), spring (8) one ends are connected with receipts chain device, and end is connected on the effector mainboard in addition;

Control member is installed in to be handled on the big plate (3), handle being connected on the axletree that big plate do not rotate, hawser (5) is fixedly connected on the fixed block (50), four connect other end of spud pile (47) is rotatably connected with fulcrum latticing (45), four ends that connect spud pile are rotationally connected (77) and pulley (4) by turning, four connecting rods (43) that slide have been rotatably connected on the pull bar sliding shoe (44), slide four connecting rods by (43a), (43b) and (43c) 3 pairs of block parts are rotatably connected, and manipulating handgrip (11) is connected on the handlebar with hawser.

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