阅读说明：本技术 一种大型柴油机启动助力装置 (Large-scale diesel engine starts booster unit ) 是由 代洪 王芳 于 2020-05-11 设计创作，主要内容包括：本发明公开了一种大型柴油机启动助力装置,包括助力机构、连锁装置和传动机构,所述助力机构与连锁装置的一端相连接,连锁装置的另一端与传动机构相连接。本发明提供一种大型柴油机启动助力装置,可以在低温或冷车情况下有效地助力柴油机启动,本发明助力启动性能好,启动时安全、稳定、可靠,发动机着火后,助力装置能够及时的自动分离。(The invention discloses a large diesel engine starting power assisting device which comprises a power assisting mechanism, an interlocking device and a transmission mechanism, wherein the power assisting mechanism is connected with one end of the interlocking device, and the other end of the interlocking device is connected with the transmission mechanism. The invention provides a large diesel engine starting power assisting device which can effectively assist a diesel engine to start under the condition of low temperature or cold vehicle.)

1. The utility model provides a large-scale diesel engine starts booster unit which characterized in that: the interlocking device comprises a power-assisted mechanism, an interlocking device (7) and a transmission mechanism, wherein the power-assisted mechanism is connected with one end of the interlocking device (7), and the other end of the interlocking device (7) is connected with the transmission mechanism.

2. The large diesel engine starting power assisting device of claim 1, wherein: the power assisting mechanism comprises an alternating current motor (1), a motor output shaft (2), a coupler (3), a speed reducer input shaft (4), a speed reducer (5) and a speed reducer output shaft (6), one end of the motor output shaft (2) is connected with the alternating current motor (1), the other end of the motor output shaft (2) is connected with a driving part of the coupler (3), a driven part of the coupler (3) is connected with one end of the speed reducer input shaft (4), the other end of the speed reducer input shaft (4) is connected with the speed reducer (5), one end of the speed reducer output shaft (6) is connected with the speed reducer (5), and the other end of the speed reducer output shaft (6) is provided with external teeth and is connected with a linkage device.

3. The large diesel engine starting power assisting device of claim 1, wherein: the interlocking device comprises a floating shaft (701), a clutch sleeve (705), a shifting fork shaft (702), a shifting fork (703), a pull rod (704) and a control device (707), wherein the clutch sleeve (705) is sleeved on the floating shaft (701), semicircular inner teeth are arranged at two ends of the clutch sleeve (705), an annular groove is formed in the middle of the clutch sleeve (705), the middle of the shifting fork (703) is connected with the shifting fork shaft (702), one end of the shifting fork (703) is inserted into the annular groove of the clutch sleeve (705), the other end of the shifting fork (703) is hinged to one end of the pull rod (704), and the other end of the pull rod (704) is connected with the control device (707).

4. The large diesel engine starting power assisting device of claim 3, wherein: the control device comprises a shell (706), an electromagnetic coil (710), a return spring (708) and an electromagnetic iron core (709), wherein one end of the electromagnetic iron core (709) is connected with a pull rod (704), the other end of the electromagnetic iron core (709) is inserted into the shell (706), the electromagnetic coil (710) is wound outside the shell (706), the return spring (708) is placed between a boss of the electromagnetic iron core (709) and a boss of the shell (706), one end of the return spring (708) is fixed on the shell (706), and the other end of the return spring (708) is fixed on the electromagnetic iron core (709).

5. The large diesel engine starting power assisting device of claim 1, wherein: the transmission mechanism comprises a driving belt wheel (9), a driving belt wheel shaft (8), a driven belt wheel (11), a transmission belt (10), a locking device and a crankshaft (14), one end of the driving belt wheel shaft (8) is in key connection with the driving belt wheel (9), the other end of the driving belt wheel shaft (8) is provided with external teeth and is in meshed connection with an interlocking device (7), the driving belt wheel (9) is connected with the driven belt wheel (11) through the transmission belt (10), the driven belt wheel (11) is sleeved at the tail end of the crankshaft (14) in an empty mode, and the driven belt wheel (11) is connected with the crankshaft (14) through the locking device.

6. The large diesel engine starting power assisting device of claim 5, wherein: the locking device comprises a ratchet wheel (12) and a pawl (13), the ratchet wheel (12) is connected to the tail end of a crankshaft (14) through a key, the ratchet wheel (12) and a driven pulley (11) are concentrically arranged, the tail part of the pawl (13) is hinged to the inner side of the driven pulley (11), and the head end of the pawl (13) is embedded into an inner groove of the ratchet wheel (12).

Technical Field

The invention relates to the field of engine use and maintenance, in particular to a large diesel engine starting power assisting device.

Background

At present, the starting modes of the diesel engine mainly comprise manual starting and electric starter starting. The temperature is lower in winter in the north, the capacity of the storage battery is reduced, the viscosity of lubricating oil is high, the vehicle is difficult to catch fire when frequently started for many times, and the low-temperature starting requirement cannot be met even if the lubricating oil is preheated. The invention has good power-assisted starting performance, is safe, stable and reliable in starting, and can automatically separate the power-assisted device in time after the engine is ignited.

Disclosure of Invention

The invention aims to provide a large diesel engine starting power assisting device to solve the technical problems in the background technology.

In order to achieve the purpose, the invention provides the following technical scheme: the utility model provides a large-scale diesel engine starts booster unit, includes assist drive device, interlock and drive mechanism, assist drive device is connected with interlock's one end, and interlock's the other end is connected with drive mechanism.

Further, assist drive device includes AC motor, motor output shaft, shaft coupling, reduction gear input shaft, reduction gear and reduction gear output shaft, and the one end of motor output shaft is connected with AC motor, and the other end of motor output shaft is connected with the initiative part of shaft coupling, and the driven part of shaft coupling links to each other with reduction gear input shaft one end, and the other end of reduction gear input shaft is connected with the reduction gear, and reduction gear output shaft one end links to each other with the reduction gear, and the reduction gear output shaft other end is provided with the external tooth and is connected with interlocking device.

Further, the interlocking device comprises a floating shaft, a clutch sleeve, a shifting fork shaft, a shifting fork, a pull rod and a control device, wherein the clutch sleeve is sleeved on the floating shaft, semicircular inner teeth are arranged at two ends of the clutch sleeve, an annular groove is formed in the middle of the clutch sleeve, the middle of the shifting fork is connected with the shifting fork shaft, one end of the shifting fork is inserted into the annular groove of the clutch sleeve, the other end of the shifting fork is hinged to one end of the pull rod, and the other end of the pull rod is connected with the control device.

Further, controlling means includes casing, solenoid, return spring and electromagnetic core, and electromagnetic core's one end and pull rod are connected, and electromagnetic core's the other end is inserted in the casing, and the solenoid twines the casing outside, return spring places between electromagnetic core boss and casing boss, and return spring one end is fixed in on the casing, and the return spring other end is fixed on electromagnetic core.

Furthermore, the transmission mechanism comprises a driving belt wheel, a driving belt wheel shaft, a driven belt wheel, a transmission belt, a locking device and a crankshaft, wherein one end of the driving belt wheel shaft is connected with the driving belt wheel in a key mode, the other end of the driving belt wheel shaft is provided with external teeth and is connected with an interlocking device in a meshing mode, the driving belt wheel is connected with the driven belt wheel through the transmission belt, the driven belt wheel is sleeved at the tail end of the crankshaft in an empty mode, and the driven belt wheel is connected with the crankshaft through the locking.

Furthermore, the locking device comprises a ratchet wheel and a pawl, the ratchet wheel is connected to the tail end of the crankshaft through a key, the ratchet wheel and the driven belt wheel are concentrically arranged, the tail part of the pawl is hinged to the inner side of the driven belt wheel, and the head end of the pawl is embedded into an inner groove of the ratchet wheel.

Compared with the prior art, the invention has the beneficial effects that: the invention can effectively assist the diesel engine to start under the condition of low temperature or cold vehicle, has good assisted starting performance, is safe, stable and reliable in starting, and can automatically separate the assisted device in time after the engine is ignited.

Drawings

FIG. 1 is a schematic view of the constitution of the present invention;

FIG. 2 is a schematic view of the structure of the transmission mechanism of the present invention;

FIG. 3 is a schematic view of an interlocking device according to the present invention;

FIG. 4 is a schematic diagram of a control circuit according to the present invention.

In the figure: 1. an AC motor; 2. an output shaft of the motor; 3. a coupling; 4. a reducer input shaft; 5. a speed reducer; 6. a reducer output shaft; 7. an interlocking device; 701. a floating shaft; 702. a fork shaft; 703. a shifting fork; 704. a pull rod; 705. a clutch sleeve; 706. a housing; 707. a control device; 708. a return spring; 709. an electromagnetic core; 710. an electromagnetic coil; a-electromagnetic coil connecting terminal; e-bonding; 8. a driving pulley shaft; 9. a driving pulley; 10. a drive belt; 11. a driven pulley; 12. a ratchet wheel; 13. a pawl; 14. a crankshaft.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

Referring to fig. 1, the present invention provides a technical solution: the utility model provides a large-scale diesel engine starts booster unit, includes assist drive device, interlock 7 and drive mechanism, assist drive device is connected with interlock 7's one end, and interlock 7's the other end is connected with drive mechanism.

The power assisting mechanism comprises a 220V alternating current motor 1, a motor output shaft 2, a coupler 3, a reducer input shaft 4, a reducer 5 and a reducer output shaft 6, wherein the alternating current motor 1 is connected with a driving part of the coupler 3 through the motor output shaft 2, a driven part of the coupler 3 is connected with the reducer 5 through the reducer input shaft 4, and outer teeth are arranged on the reducer output shaft 6 and are connected with a linkage device 7.

Referring to fig. 2, the transmission mechanism includes a driving pulley 9, a driving pulley shaft 8, a driven pulley 11, a transmission belt 10, a locking device and a crankshaft 14, one end of the driving pulley shaft 8 is connected with the driving pulley 9 in a key manner, the other end of the driving pulley shaft 8 is provided with external teeth and is engaged with the interlocking device 7, the driving pulley 9 is connected with the driven pulley 11 through the transmission belt 10, and the driven pulley 11 is sleeved at the tail end of the crankshaft 14 in an empty manner and is connected through the locking device; the locking device comprises a ratchet wheel 12 and a pawl 13, the ratchet wheel 12 is in key connection with a crankshaft 14, a driven belt wheel 11 and the ratchet wheel 12 are concentrically arranged, the tail part of the pawl 13 is hinged with the inner side of the driven belt wheel 11, the head end of the pawl 13 is embedded into an inner groove of the ratchet wheel 12, a driving belt wheel 9 receives power transmitted by an alternating current motor 1 and drives the driven belt wheel 11 to rotate through a transmission belt 10, when the rotating speed of the driven belt wheel 11 is higher than that of the ratchet wheel 12, the head end of the pawl 13 is embedded into a groove of the ratchet wheel 12, and the driven belt wheel 11 can drive the ratchet wheel 12 to rotate, namely drive the crankshaft; when the rotation speed of the ratchet 12 is higher than the rotation speed of the driven pulley 11, the leading end of the pawl 13 slides on the surface of the ratchet 12, and power cannot be transmitted.

Referring to fig. 3, the interlocking device includes a floating shaft 701, a clutch sleeve 705, a fork shaft 702, a fork 703, a pull rod 704, and a control device 707, the clutch sleeve 705 is sleeved on the floating shaft 701, the spherical heads at the two ends of the floating shaft 701 are respectively supported in the inner holes of the driving pulley shaft 8 and the output shaft 6 of the speed reducer, two ends of a clutch sleeve 705 are provided with semicircular internal teeth, one end of the clutch sleeve 705 is constantly meshed with a gear on a driving pulley shaft 8, the middle part of the clutch sleeve 705 is provided with an annular groove, the middle part of a shifting fork 703 is connected with a shifting fork shaft 702, one end of the shifting fork 703 is inserted into the annular groove of the clutch sleeve 705, the other end of the shifting fork 703 is hinged with one end of a pull rod 704, the other end of the pull rod 704 is connected with a control device 707, under the action of an external force of a control device 707, a shift fork 703 can be swung around a shift fork shaft 702 by the movement of a pull rod 704, and a clutch sleeve 705 can be moved on a floating shaft 701.

The control device 707 comprises a housing 706, an electromagnetic coil 710, a return spring 708 and an electromagnetic core 709, wherein one end of the electromagnetic core 709 is connected with a pull rod 704, the other end of the electromagnetic core 709 is inserted into the housing 706, the electromagnetic coil 710 is wound outside the housing 706, the return spring 708 is arranged between a boss of the electromagnetic core 709 and a boss of the housing 706, one end of the return spring 708 is fixed on the housing 706, the other end of the return spring 708 is fixed on the electromagnetic core 709, when the electromagnetic coil 710 is energized, electromagnetic force is generated to attract the electromagnetic core 709 to overcome the elastic force of the spring to move rightwards, so that the pull rod 704 is driven to move rightwards, the pull rod 704 drives a shifting fork 703 to rotate around a shifting fork shaft 702, a clutch sleeve 705 is pushed to move leftwards to be meshed with a gear on a reducer output; when the electromagnetic coil 710 is powered off, the electromagnetic force disappears, the electromagnetic core 709 moves leftwards under the action of the return spring 708, the pull rod 704 moves leftwards, the pull rod 704 drives the shifting fork 703 to rotate reversely around the shifting fork shaft 702, the clutch sleeve 705 moves rightwards, the clutch sleeve 705 is separated from the gear on the output shaft 6 of the speed reducer, and power transmission is cut off.

Referring to fig. 4, the ac motor control circuit mainly includes a 220V ac power supply, a battery power supply, a power switch SW, an ac motor M, a normally closed relay J1, a normally open relay J2, a normally open relay J3, and an electromagnetic coil 710. A 1 terminal of the power switch SW is connected with a plus B terminal of the anode of the storage battery, an input end of a contact of the normally closed relay J1 is connected with a 2 terminal of the power switch SW, an output end of a contact of the normally closed relay J1 is connected with one end of the electromagnetic coil 710, and the other end of the electromagnetic coil 710 is grounded; the input end of the coil of the normally closed relay J1 is connected with an 'N' wiring terminal of the generator, and the output end of the coil of the normally closed relay J1 is grounded. The input end of the contact of the starting normally-open relay J2 is connected with the positive electrode of the storage battery plus B terminal, the output end of the contact J2 is connected with the control terminal of the starter, the input end of the coil of the relay J2 is connected with the 4 terminals of the power switch SW, and the output end of the coil is grounded. The input end of the contact of the relay J3 is connected with a 220V alternating current power supply, the output end of the contact of the relay J3 is connected with an alternating current motor, and the other end of the alternating current motor is connected with the 220V alternating current power supply; the input end of the coil of the relay J3 is connected with the 4 terminals of the power switch SW, and the output end of the coil of the relay J3 is grounded. When the power switch SW is turned to the I position, the terminals 1 and 2 of the power switch SW are connected, and when the power switch SW is turned to the II position, the terminals 1, 2 and 4 are all connected.

The working principle is as follows: when the engine is started, a 220V alternating current power supply can be connected firstly, then a power switch SW is switched to the I gear (1 and 2 binding posts are switched on), at the moment, the engine does not run, the N binding post of the generator has no voltage output, a contact of a normally closed relay J1 is closed, current passes through an electromagnetic coil 710, electromagnetic force is generated, an electromagnetic iron core 709 is attracted to overcome the elastic force of a spring to move rightwards, a pull rod 704 is driven to move rightwards, the pull rod 704 drives a shifting fork 703 to rotate around a shifting fork shaft 702, a clutch sleeve 705 is pushed to move leftwards to be meshed with a gear on a reducer output shaft 6, and the reducer output shaft 6 and a driving pulley shaft; then the power switch SW is turned to the 'II' gear (the wiring terminals of 1, 2 and 4 are switched on), the electromagnetic coil 710 continuously passes current to generate electromagnetic force, the clutch sleeve 705 is kept still, at the moment, the electromagnetic coils of the relays J2 and J3 pass current to generate electromagnetic force, the contacts of the relays J2 and J3 are attracted to be closed, the control circuit of the electric starter is switched on, the circuit of the 220V alternating current motor is also switched on, the electric starter and the 220V alternating current motor run simultaneously, the electric starter drives the gear ring of the engine flywheel to run, and the crankshaft 14 of the engine runs along with the gear ring of the engine flywheel; the 220V alternating current motor drives the driving belt wheel 9 to rotate through the speed reducer 5 and the interlocking device 7, the driving belt wheel 9 drives the driven belt wheel 11 to rotate through the transmission belt 10, and the driven belt wheel 11 drives the ratchet wheel 12 to rotate through the pawl 13 due to the fact that the rotating speed of the driven belt wheel 11 is higher than that of the ratchet wheel 12 on the crankshaft 14, so that the electric starter is assisted to finish the starting process of the engine.

When the engine is ignited, the power switch SW is released, then the power switch SW returns to the I gear immediately, the circuit of the power switch SW II gear is cut off immediately, the contacts of the relays J2 and J3 are disconnected, the control circuit of the electric starter is disconnected, the circuit of the 220V alternating current motor is also disconnected, the electric starter and the 220V alternating current motor stop running, the driven pulley 11 stops running immediately, the rotating speed of the engine crankshaft 14 is higher than that of the driven pulley 11, and the head end of the pawl 13 slides on the ratchet wheel 12; when the engine runs at idle speed, the 'N' terminal of the generator outputs voltage, the electromagnetic coil 710 of the relay J1 passes through current, electromagnetic force is generated to disconnect the contacts, the circuit of the electromagnetic coil 710 is cut off, the electromagnetic force of the electromagnetic coil 710 disappears, so the electromagnetic iron core moves leftwards under the action of the return spring 708, the shifting fork 703 drives the clutch sleeve 705 to move rightwards, the clutch sleeve 705 is separated from the gear on the output shaft 6 of the speed reducer, power transmission is cut off, and the resistance when the engine runs is reduced. When the engine is not assisted by the hot start, the 220V alternating current motor circuit can be disconnected, the driven pulley 11 does not rotate at the moment, and the head end part of the pawl 13 slides on the ratchet wheel 12, so that the hot start is not influenced.

The standard parts used in the invention can be purchased from the market, the special-shaped parts can be customized according to the description of the specification and the accompanying drawings, the specific connection mode of each part adopts conventional means such as bolts, rivets, welding and the like mature in the prior art, the machinery, parts and equipment adopt conventional models in the prior art, and the circuit connection adopts the conventional connection mode in the prior art, and the details are not described, and the content not described in detail in the specification belongs to the prior art known by persons skilled in the art.

Although the present invention has been described in detail with reference to the foregoing embodiments, it will be apparent to those skilled in the art that various changes in the embodiments and/or modifications of the invention can be made, and equivalents and modifications of some features of the invention can be made without departing from the spirit and scope of the invention.