CN203321736U

CN203321736U - Pull-free starter of air-cooled diesel engine

Info

Publication number: CN203321736U
Application number: CN201320396224XU
Authority: CN
Inventors: 茹文伟
Original assignee: Changzhou Hi-Earns Mechanical & Electrical Co Ltd
Current assignee: Changzhou Hi-Earns Mechanical & Electrical Co Ltd
Priority date: 2013-07-03
Filing date: 2013-07-03
Publication date: 2013-12-04
Anticipated expiration: 2023-07-03

Abstract

The utility model relates to a pull-free starter of an air-cooled diesel engine, comprising an outer housing, a turbination spring, a fixed plate for the turbination spring, a turbination spring box, a center shaft and an intermediate shaft. The intermediate shaft is hollowed and passes through the center on the bottom of the outer housing; the head of the center shaft abuts against the outside of the outer housing; the intermediate shaft sleeves the center shaft and possesses a shaft collar; stop block grooves are arranged on the shaft collar; one-way stop blocks are hinged in the top block grooves; spring holes are formed on the bottom of the stop block grooves; tip pressing springs are arranged in the spring holes, and the heads of the tip pressing springs abut against the lower parts of the one-way stop blocks; a first driven gear is positioned between the head of the intermediate shaft and the shaft collar; and the shaft collar is in rotary connection with a volute shaft on the tail part of the center shaft. Cranking claws of the pull-free starter of the air-cooled diesel engine are extended out through manual regulation and are fitted into a cranking claw plate of the diesel engine, and the cranking claws are manually controlled, the movement is flexible and the hard collision between the cranking claws and the diesel engine or between the cranking claws is avoided, so that the safety is guaranteed.

Description

Air-cooled diesel engine exempts to draw starter

Technical field

The utility model relates to the diesel engine starting technical field, and especially a kind of air-cooled diesel engine exempts to draw starter.

Background technique

Development along with agricultural economy, Agricultural Mechanization Degree progressively improves, the agricultural cultivating & machine is more and more universal, its power source is diesel engine, diesel engine is that burning diesel oil obtains exergonic motor, it is large that it has power, the thermal efficiency is high, the advantages such as economic performance is good, diesel engine must can make it enter operating condition by a set of starting mechanism before work, existing starter of diesel engine has the hand starting of employing and electricity to start two kinds, although the electricity start mode is convenient, but complex structure, and also inconvenience aspect maintenance, and adopt traditional hand starting pattern, the starting dog that is starter can snap onto in diesel engine pawl dish, and then realize that hand-operated starter drives diesel engine starting, but find in actual applications, rigid impact easily appears in the starting dog on starter and the starting dog dish contacting point on diesel engine flywheel, slight crack even appears in the i.e. easy distortion in the place of being in contact with one another, and the bearing pin that supports pawl is because fracture also easily appears in this rigid impact, because the power resources of starter are in the elastic potential energy of spiral spring, spiral spring is from being tightened to release potential energy, can cause the rotating speed of starting dog very fast, if so directly get on the starting dog dish, not hard to imagine is that impact force is strong, easily damage starting dog dish and starting dog, on the other hand, exactly because when also spiral spring discharges, rotating speed is too fast, when operator operate, extremely easily human body is damaged, this accident occurs repeatedly in actual applications, therefore the application attempts to improve this defect.

The model utility content

The technical problems to be solved in the utility model is: for overcome fragile problem that in prior art, between starting dog and diesel engine starting pawl dish, rigid impact causes and under the effect of spiral spring rocking handle turn round large half-turn and starting dog sent into to the problem that produces personal injury in diesel engine starting pawl dish hole, provide a kind of without potential safety hazard, the air-cooled diesel engine starter of long service life, it is by rotating manually jack shaft, make starting dog stretch out in advance, and snap in smoothly in the starting dog dish of diesel engine, whole process starting dog there is no rigid the contact with the starting dog dish, it is very soft contact, the fine low problem that solves rigid impact.

The utility model solves the technological scheme that its technical problem adopts: a kind of air-cooled diesel engine exempts to draw starter, comprise shell, spiral spring, the spiral spring fixed plate, the spiral spring box, central shaft and jack shaft, described jack shaft is hollow shaft, described central shaft is through shell bottom center, the central shaft head is butted on the shell outside, described jack shaft is set in central shaft, described jack shaft has the axle collar, have the block groove of perforation on the described axle collar, be hinged with one way stop in described block groove, described block groove bottom has spring eye, be provided with top pressure spring in spring eye, described top pressure spring top is against the one way stop below, be installed with the first driven gear between described jack shaft head and the axle collar, be rotatably connected to the scrollwork axle on the shaft part of the described axle collar and central shaft afterbody, described spiral spring the inner is connected in the scrollwork axle, the spiral spring outer end is fixed on the spiral spring fixed plate, described spiral spring box covers in spiral spring and is fixedly connected with the spiral spring fixed plate, be rotatably connected to the second driven gear on the described axle collar, the side end face of described the second driven gear is fixedly connected with the scrollwork axle, offer the synchronous groove of some same rotation directions on the inner ring of described the second driven gear, when the second driven gear, with jack shaft, synchronize while rotating, keep in touch on the top of described synchronous groove bottom land and one way stop,

Described the second driven gear is engaged with the first ratchet, and described the first ratchet center is provided with pre-mandrel, and described pre-mandrel one end bearing is in the spiral spring fixed plate, and the other end stretches out in shell and makes the pretension end;

Be engaged with the first ratchet on described the first ratchet, described the first ratchet center is provided with the first pawl axis, and described the first pawl axis one end bearing is in the spiral spring fixed plate, and the other end stretches out in shell and makes starting end, on described the first ratchet, return spring is housed;

Described the first driven gear is engaged with the second ratchet, and described the second ratchet center is provided with adjusting axle, and described adjusting axle one end bearing is in the spiral spring fixed plate, and the other end stretches out in shell and makes adjustments end;

Be engaged with the second ratchet on described the second ratchet, described the second ratchet center is provided with the second pawl axis, and described the second pawl axis one end bearing is in the spiral spring fixed plate, and the other end stretches out in shell and does to discharge end, on described the second ratchet, return spring is housed;

Described jack shaft root profile is connected with chassis and pawl lid, edge between described chassis and pawl lid is fixedly connected with at least two uniform starting dogs by connecting pin, junction between each starting dog and chassis is provided with for keeping the torsion spring of starting dog position, be provided with the locating piece that profile is connected in the jack shaft afterbody in the inner ring that described starting dog surrounds, the gland be coaxially installed on central shaft is stamped in top, described chassis, the root that is positioned at central shaft is set with pad and friction plate, described pad passes through the nut compressing friction plate in the gland side, there is the pressure spring of for pushing up, pressing the gland internal face on described gland inwall, described pressure spring is set in central shaft, be provided with on the gland periphery wall with starting dog and stretch out corresponding pawl mouth.

After spiral spring tightens, spanner is enclosed within on adjustable side, the manual rotation adjustable side, the second ratchet drives the first driven gear and rotates, the first driven gear is connected with the jack shaft profile, that is to say that the first driven gear synchronizes transfer with jack shaft, and now between the axle collar of the second driven gear on the scrollwork axle and jack shaft, there is no related rotation, the idle running produced, so the potential energy of spiral spring can't be discharged, therefore spanner is pulled adjustable side, can be very soft just can and stretch out from the pawl mouth the starting dog rotation, and then enter in the pawl mouth of the starting dog dish on diesel engine, so also just realized that starting dog docks with the pre-of starting dog dish, this step is to lean on manual tune fully, from handling, be undoubtedly easily, also science comparatively, dock complete after, again the first ratchet is unclamped, spiral spring potential energy discharges, at this moment the scrollwork axle comprises that the first driven gear will be in the jack shaft coaxial rotation, thereby can start diesel engine, solved the flimsy technical problem that between starting dog and diesel engine starting pawl dish, rigid impact causes.

According to the needs of different situations, described starting dog has 2, and described pawl mouth has 2.Can also be three or more equally.

Further, described pawl mouth size is greater than the starting dog head.

The beneficial effects of the utility model are, the utility model stretches out starting dog in the starting dog dish that then fits into diesel engine by regulating manually, so the ingenious part of this docking mode is in pure hand-guided, and very convenient, move soft, can there do not is the problem of rigid impact between starting dog and diesel engine starting pawl dish, and the utility model is owing to being that pure hand-guided starting dog docks with the pre-of starting dog dish, compare traditional method, there is absolute Security, traditional means are still utilized the potential energy docking of spiral spring, this undoubtedly method has danger, the potential energy that is spiral spring is larger, after sudden outburst, misoperation, the spanner hand of easily injuring, cause serious personal injury, and the utility model is manual tune, be not that the potential energy that relies on spiral spring reaches docking of starting dog and starting dog dish, therefore the problem of staff can't appear accidentally injuring, there is Security.

The accompanying drawing explanation

Below in conjunction with drawings and Examples, the utility model is further illustrated.

Fig. 1 is the tomograph that air-cooled diesel engine of the present utility model exempts to draw starter;

Fig. 2 is the three-dimensional explosive view that air-cooled diesel engine of the present utility model exempts to draw starter;

Fig. 3 is the gear structure figure that air-cooled diesel engine of the present utility model exempts to draw starter;

Fig. 4 is the structural drawing of air-cooled diesel engine of the present utility model while exempting to draw the jack shaft of starter and the second driven gear coaxial rotation;

Fig. 5 is the starting dog place structural drawing that air-cooled diesel engine of the present utility model exempts to draw starter;

Fig. 6 is the starting dog place cut-away view that air-cooled diesel engine of the present utility model exempts to draw starter;

Fig. 7 is the starting dog place graphics that air-cooled diesel engine of the present utility model exempts to draw starter;

Fig. 8 is the structural drawing of the second driven gear of the present utility model;

Fig. 9 is the structural drawing of jack shaft of the present utility model;

Figure 10 is the structural drawing of scrollwork axle of the present utility model.

In figure: 1. shell, 2. spiral spring, 3. spiral spring fixed plate, 4. spiral spring box, 5. central shaft, 6. jack shaft, 6-1. the axle collar, 6-2. block groove, 6-3. spring eye, 6-4. draw-in groove, 7. one way stop, 8. top pressure spring, 9. the first driven gear, 10. scrollwork axle, 11. the second driven gear, 12. synchronous groove, 13. the first ratchet, 14. pre-mandrel, 15. pretension end, 16. the first ratchet, 17. the first pawl axis, 18. starting end, 19. return spring, 20. the second ratchet, 21. adjusting axle, 22. adjustable side, 23. the second ratchet, 24. the second pawl axis, 25. discharge end, 26. chassis, 27. pawl lid, 28. connecting pin, 29. starting dog, 30. torsion spring, 31. locating piece, 32. gland, 33. pad, 34. friction plate, 35. nut, 36. pressure spring, 37. pawl mouth, 38. card.

Embodiment

By reference to the accompanying drawings the utility model is described in further detail now.These accompanying drawings are the schematic diagram of simplification, basic structure of the present utility model only is described in a schematic way, so it only show the formation relevant with the utility model.

With reference to figure 1-10, the utility model comprises shell 1, spiral spring 2, spiral spring fixed plate 3, spiral spring box 4, central shaft 5 and jack shaft 6, jack shaft 6 is hollow shaft, central shaft 5 is through shell 1 bottom center, central shaft 5 heads are butted on shell 1 outside, jack shaft 6 is set in central shaft 5, jack shaft 6 has axle collar 6-1, have the block groove 6-2 of perforation on axle collar 6-1, be hinged with one way stop 7 in block groove 6-2, block groove 6-2 bottom surface has spring eye 6-3, be provided with top pressure spring 8 in spring eye 6-3, top pressure spring 8 tops are against one way stop 7 belows, be installed with the first driven gear 9 between jack shaft 6 heads and the axle collar 61, with reference to figure 9, the first driven gear 9 relies on the draw-in groove 6-4 location be opened on jack shaft 6 herein, in draw-in groove 6-4, card can be set, can effectively limit moving axially of the first driven gear 9 by card, be rotatably connected to scrollwork axle 10 on the shaft part of axle collar 6-1 and central shaft 5 afterbodys, spiral spring 2 the inners are connected in scrollwork axle 10, spiral spring 2 outer ends are fixed on spiral spring fixed plate 3, spiral spring box 4 covers in spiral spring 2 and is fixedly connected with spiral spring fixed plate 3, be rotatably connected to the second driven gear 11 on axle collar 6-1, the side end face of the second driven gear 11 and scrollwork axle 10 adopt the mode of welding to be combined as a whole,

With reference to figure 8, offer 4 synchronous grooves 12 with rotation direction on the inner ring of the second driven gear 11, when the second driven gear 11, with jack shaft 6, synchronize while rotating, keep in touch on the top of synchronous groove 12 bottom lands and one way stop 7, that is to say when rotating with a direction, when one way stop 7 moves to synchronous groove 12, top pressure spring 8 ejects one way stop 7, one way stop 7 heads with synchronize groove 12 bottom surface diebacks, at this moment scrollwork axle 10 and the second driven gear 11 will be synchronizeed with jack shaft 9 rotation, when but opposite direction rotates, because rotation direction has changed, although at this moment one way stop 7 can be stretched out, but its head can not with synchronize groove 12 bottom surface diebacks, namely can't realize being synchronized with the movement of jack shaft 9 and scrollwork axle 10, now scrollwork axle 10 is motionless,

With reference to figure 3 Fig. 4, the second driven gear 11 is engaged with the first ratchet 13, the first ratchet 13 centers and is provided with pre-mandrel 14, and pre-mandrel 14 1 end bearings are in spiral spring fixed plate 3, and the other end stretches out in shell 1 and makes pretension end 15;

First ratchet 16, the first ratchet 16 centers that are engaged with on the first ratchet 13 are provided with the first pawl axis 17, the first pawl axis 17 1 end bearings in spiral spring fixed plate 3, and the other end stretches out in shell 1 and does, on starting end 18, the first ratchets 16, return spring 19 is housed;

The first driven gear 9 is engaged with the second ratchet 20, the second ratchet 20 centers and is provided with adjusting axle 21, and adjusting axle 21 1 end bearings are in spiral spring fixed plate 3, and the other end stretches out in shell 1 and makes adjustments end 22;

Second ratchet 23, the second ratchet 23 centers that are engaged with on the second ratchet 20 are provided with the second pawl axis 24, the second pawl axis 24 1 end bearings in spiral spring fixed plate 3, and the other end stretches out in shell 1 and does, on release end 25, the second ratchets 23, return spring 19 is housed;

With reference to figure 5 Fig. 6 Fig. 7, jack shaft 6 root profiles are connected with chassis 26 and pawl lid 27, edge between chassis 26 and pawl lid 27 is fixedly connected with two uniform starting dogs 29 by connecting pin 28, junction between each starting dog 29 and chassis 26 is provided with for keeping the torsion spring 30 of starting dog 29 positions, be provided with the locating piece 31 that profile is connected in jack shaft 6 afterbodys in the inner ring that starting dog 29 surrounds, the gland 32 be coaxially installed on central shaft 5 is stamped in 26 tops, chassis, the root that is positioned at central shaft 5 is set with pad 33 and friction plate 34, pad 33 passes through nut 35 pressing friction sheets 34 in gland 32 sides, there is the pressure spring 36 of for pushing up, pressing gland 32 internal faces on gland 32 inwalls, pressure spring 36 is set in central shaft 5, be provided with on gland 32 periphery walls with starting dog 29 and stretch out corresponding pawl mouth 37.

The principle that starts to work of the present utility model is as follows:

The stretching out the stage in advance of starting dog 29 (pre-docking): with reference to figure 1-7, spanner is buckled on pretension end 15, clockwise rotate pretension end 15, the first ratchet 13 and the second driven gear 11 engagements, make the second driven gear 11 rotate counterclockwise, because the second driven gear 11 is to be welded and fixed with scrollwork axle 10, that is to say that scrollwork axle 10 also rotates counterclockwise, can not synchronize transfer between scrollwork axle 10 and jack shaft 6, with reference to figure 4, when the second driven gear 11 rotates counterclockwise, one way stop 7 can't dieback in synchronous groove 12, when therefore now scrollwork axle 10 rotates counterclockwise, spiral spring 2 will be tightened energy storage, effect due to the first ratchet 16, make the potential energy of spiral spring 2 be held, can't rebound, after energy storage, spanner is sleeved on adjustable side 22, rotate counterclockwise adjustable side 22, at this moment the sense of rotation of the first driven gear 9 is clockwise, same one way stop 7 can't dieback in synchronous groove 12, the first driven gear 9 rotates and also rotates with jack shaft 6, starting dog 29 projected claw mouth 37 smoothly under turning effort now, as can be seen here, stretching out of starting dog 29 is the moving realization of armrest fully, need to not realize docking of starting dog 29 and diesel engine starting pawl dish by the potential energy of spiral spring 2, there is high Security, certainly above step can be conversely, after namely first starting dog 29 being stretched out, tighten again spiral spring 2.

The starting period of starting dog 29: after above-mentioned steps, as long as the spanner cover is filled to starting end 18, after pulling, the first ratchet 16 separates with the first ratchet 13, and at this moment the elastic potential energy of spiral spring 2 is discharged, and makes scrollwork axle 10 drive the second driven gear 11 High Rotation Speeds, and now, one way stop 7 will eject and just in time withstand on the interior synchronous transfer that realizes jack shaft 6 of synchronous groove 12 under the effect of top pressure spring 8, thus starting dog 29 also rapidly turned over, and then just driven the starting of diesel engine.

The above-mentioned foundation desirable embodiment of the present utility model of take is enlightenment, and by above-mentioned description, the relevant staff can, in the scope that does not depart from this model utility technological thought, carry out various change and modification fully.The technical scope of this model utility is not limited to the content on specification, must determine its technical scope according to the claim scope.

Claims

1. an air-cooled diesel engine exempts to draw starter, it is characterized in that: comprise shell (1), spiral spring (2), spiral spring fixed plate (3), spiral spring box (4), central shaft (5) and jack shaft (6), described jack shaft (6) is hollow shaft, described central shaft (5) is through shell (1) bottom center, central shaft (5) head is butted on shell (1) outside, described jack shaft (6) is set in central shaft (5), described jack shaft (6) has the axle collar (6-1), have the block groove (6-2) of perforation on the described axle collar (6-1), be hinged with one way stop (7) in described block groove (6-2), described block groove (6-2) bottom surface has spring eye (6-3), be provided with top pressure spring (8) in spring eye (6-3), described top pressure spring (8) top is against one way stop (7) below, be installed with the first driven gear (9) between described jack shaft (6) head and the axle collar (6-1), be rotatably connected to scrollwork axle (10) on the shaft part of the described axle collar (6-1) and central shaft (5) afterbody, described spiral spring (2) the inner is connected in scrollwork axle (10), spiral spring (2) outer end is fixed on spiral spring fixed plate (3), described spiral spring box (4) covers in spiral spring (2) and is fixedly connected with spiral spring fixed plate (3), be rotatably connected to the second driven gear (11) on the described axle collar (6-1), the side end face of described the second driven gear (11) is fixedly connected with scrollwork axle (10), offer the synchronous groove (12) of some same rotation directions on the inner ring of described the second driven gear (11), when the second driven gear (11), with jack shaft (6), synchronize while rotating, keep in touch on the top of described synchronous groove (12) bottom land and one way stop (7),

Described the second driven gear (11) is engaged with the first ratchet (13), described the first ratchet (13) center is provided with pre-mandrel (14), described pre-mandrel (14) one end bearings are in spiral spring fixed plate (3), and the other end stretches out in shell (1) and makes pretension end (15);

Be engaged with the first ratchet (16) on described the first ratchet (13), described the first ratchet (16) center is provided with the first pawl axis (17), described the first pawl axis (17) one end bearings are in spiral spring fixed plate (3), the other end stretches out in shell (1) and makes starting end (18), and return spring (19) is housed on described the first ratchet (16);

Described the first driven gear (9) is engaged with the second ratchet (20), described the second ratchet (20) center is provided with adjusting axle (21), described adjusting axle (21) one end bearings are in spiral spring fixed plate (3), and the other end stretches out in shell (1) and makes adjustments end (22);

Be engaged with the second ratchet (23) on described the second ratchet (20), described the second ratchet (23) center is provided with the second pawl axis (24), described the second pawl axis (24) one end bearings are in spiral spring fixed plate (3), the other end stretches out in shell (1) and does to discharge end (25), and return spring (19) is housed on described the second ratchet (23);

Described jack shaft (6) root profile is connected with chassis (26) and pawl lid (27), edge between described chassis (26) and pawl lid (27) is fixedly connected with at least two uniform starting dogs (29) by connecting pin (28), junction between each starting dog (29) and chassis (26) is provided with for keeping the torsion spring (30) of starting dog (29) position, be provided with the locating piece (31) that profile is connected in jack shaft (6) afterbody in the inner ring that described starting dog (29) surrounds, the gland (32) be coaxially installed on central shaft (5) is stamped in top, described chassis (26), the root that is positioned at central shaft (5) is set with pad (33) and friction plate (34), described pad (33) passes through nut (35) pressing friction sheet (34) in gland (32) side, there is the pressure spring (36) of for pushing up, pressing gland (32) internal face on described gland (32) inwall, described pressure spring (36) is set in central shaft (5), be provided with on gland (32) periphery wall with starting dog (29) and stretch out corresponding pawl mouth (37).

2. air-cooled diesel engine as claimed in claim 1 exempts to draw starter, it is characterized in that: described starting dog (29) has 2, and described pawl mouth (37) has 2.

3. air-cooled diesel engine as claimed in claim 1 exempts to draw starter, it is characterized in that: described pawl mouth (37) size is greater than starting dog (29) head.