High-power starting motor

Abstract

The utility model relates to a high-power starting motor. An electronic relay and an electromagnetic relay are arranged between a motor and an electromagnetic switch. A power supply terminal of the electronic relay is used for connecting a power supply anode, a control output end is connected to a control side anode of the electromagnetic relay through a wire, and a cathode is grounded and then connected to a cathode of the motor through a wire; the electromagnetic relay is provided with a first static contact and a second static contact which are connected with the electromagnetic switch, and a corresponding terminal, and a first grounding terminal is connected with the cathode of the motor. A third static contact and a fourth static contact are arranged in the electromagnetic switch, the third static contact is directly connected with the positive terminal, and the fourth static contact is connected with the positive electrode of the motor and connected with the negative electrode of the motor through a second grounding terminal. According to the structure, starting delay protection, continuous starting protection and flexible meshing control of the high-power starting motor are achieved through the synergistic effect of the electronic relay and the electromagnetic relay.

Description

TECHNICAL FIELD

[0001] The utility model relates to the field of starting motor, concretely relates to a high -power starting motor. BACKGROUND

[0002] Starting motor is a kind of device that converts electric energy into mechanical energy and drives the flywheel rotation of internal combustion engine, thereby starting engine. Starting motor is composed of starting motor, clutch mechanism and control mechanism, the clutch mechanism is installed on the extension shaft of starting motor electric drive, and the iron core in the control mechanism moves axially, thereby driving the drive gear of clutch mechanism and the gear ring of engine flywheel to mesh or separate.

[0003] The control mechanism of starting motor is divided into direct control type and electromagnetic control type, and the direct control type has been eliminated due to high operation strength, and the electromagnetic control mechanism is generally used at present, and the existing electromagnetic control mechanism mainly includes electromagnetic switch type and electromagnetic relay plus electromagnetic switch type.

[0004] For example Figure 2 It is the circuit diagram of electromagnetic relay plus electromagnetic switch type starting motor, and the circuit of the soft meshing starter mainly includes starting motor, electromagnetic switch and electromagnetic relay, the coil in the electromagnetic switch is composed of a pull-in coil and a holding coil, the number of turns of the two coils is basically equal, and the first end is connected together, the tail end of the pull-in coil is connected with the positive electrode of the starting motor, and the tail end of the holding coil is grounded;Such starter can slowly rotate with small torque before the contact of electromagnetic switch is closed, so that when the drive gear of clutch mechanism is against the end face of engine flywheel gear ring, the drive gear can slowly rotate, the forked top teeth are separated, the gear ring of engine flywheel is meshed, after the gear ring is meshed, the contact of electromagnetic switch is closed, and large current flows in the starting motor, so that the starting motor can output large torque, thereby avoiding the occurrence of top tooth and milling tooth faults, and the starter is also called flexible meshing starter.

[0005] However, for the starting motor used in the internal combustion engine of engineering machinery, generator set, ship and vehicle, since the starting motor power of starting motor is large, and the current is large, although the electromagnetic relay plus electromagnetic switch type starting motor can realize flexible meshing for small power starting motor, when used for high-power starting motor, the drive gear of clutch mechanism and the gear ring of engine flywheel are not smoothly meshed, causing top tooth and milling tooth faults. SUMMARY

[0006] The utility model discloses a big power starting motor which comprises an electronic relay, an electromagnetic relay and an electric switch.

[0007] The utility model discloses the following scheme is adopted to realize:

[0008] A big power starting motor, which comprises a motor, an electromagnetic switch, a driving gear connected to the motor through a clutch mechanism, and an electronic relay and an electromagnetic relay arranged between the motor and the electromagnetic switch.

[0009] The power supply terminal of the electronic relay is connected to the positive pole of a power source, the control output terminal is connected to the positive pole terminal of the electromagnetic relay through a first wire, and the negative pole grounding terminal is connected to the negative pole terminal of the motor through a second wire.

[0010] The first static contact terminal of the electromagnetic relay is connected to the positive pole terminal of the electromagnetic switch through a third wire, the second static contact terminal is connected to the control side common terminal of the electromagnetic switch through a fourth wire, and the first grounding terminal is connected to the negative pole terminal of the motor.

[0011] The third static contact and the positive pole terminal of the electromagnetic switch are electrically connected, the fourth static contact is electrically connected to the positive pole of the motor, and the second grounding terminal is electrically connected to the negative pole terminal of the motor.

[0012] Preferably, the electromagnetic relay comprises oppositely arranged first and second static contacts, a relay movable contact and a relay coil, the first static contact is electrically connected to the first static contact terminal, the second static contact is electrically connected to the second static contact terminal, the first end of the relay coil is connected to the first grounding terminal, and the tail end is connected to the control side positive pole terminal.

[0013] Preferably, the electromagnetic switch comprises oppositely arranged third and fourth static contacts, a movable contact arranged at one end of the iron core, a pull-in coil and a holding coil wound around the iron core, the tail ends of the pull-in coil and the holding coil are connected to the control side common terminal, the first end of the pull-in coil is connected to the positive pole of the motor, and the first end of the holding coil is connected to the second grounding terminal.

[0014] Preferably, the first grounding terminal is connected to the second grounding terminal of the electromagnetic switch through a fifth wire.

[0015] Preferably, the motor housing extends upward to form a mounting seat.

[0016] Preferably, one end of the electromagnetic switch is fixedly installed in front of the mounting seat, the core of the electromagnetic switch extends into the cavity of the mounting seat, and the electromagnetic switch is connected with the clutch mechanism through the yoke.

[0017] Preferably, the electronic relay is fixedly installed on the side of the mounting seat through the first boss circular seat.

[0018] Preferably, the electromagnetic relay is fixedly installed on the top of the mounting seat through the second boss circular seat.

[0019] The utility model discloses the beneficial effect is as follows:

[0020] 1. Electronic relay can control the single operation length of time of high -power starting motor, when the operation length of time of high -power starting motor reaches the single operation length of time of time of the regulation, electronic relay control power off, make high -power starting motor stop running, avoid long -time starting and lead to motor overheating or damage, thereby realizing starting delay protection;

[0021] 2. Electronic relay can control the starting interval length of time of high -power starting motor, when the starting interval time of high -power starting motor is too short, electronic relay prevents motor starting, prevents the motor temperature of continuous starting motor and causes the burning of motor, realizes continuous starting protection;

[0022] 3. Electronic relay can identify the fault such as top tooth or milling tooth that appears in the meshing process of the driving gear and the engine flywheel gear ring of clutch mechanism in real time through the state detection of the static contact and the dynamic contact of electromagnetic switch. When detecting abnormal situation, electronic relay cuts off power rapidly, thereby realizing flexible meshing, reducing mechanical impact and wear and tear, prolonging the service life of clutch mechanism and related components;

[0023] 4. Electronic relay can detect the current situation of the control side common wiring terminal of electromagnetic switch, detect that after engine starts, electronic relay control power off, avoid the driving gear of high -power starting motor that the engine flywheel gear ring drives rotates at high speed, and prohibit high -power starting motor from running when the engine runs;

[0024] The design combines electronic relay with electromagnetic relay and electromagnetic switch organically, not only realizes intelligent monitoring and protection on the starting process, but also improves the safety, reliability and convenience of installation and maintenance of the whole system through reasonable installation layout (such as fixing various modules by using the mounting seat), and meets the use requirements of high -power starting motor under harsh working conditions of engineering machinery, generator set, ship and vehicle. BRIEF DESCRIPTION OF DRAWINGS

[0025] Figure 1 It is the front view of the utility model;

[0026] Figure 2 The circuit is prior art;

[0027] Figure 3 The rear view is the utility model;

[0028] Figure 4 The left view is the utility model;

[0029] Figure 5 The right view is the utility information;

[0030] Figure 6 The circuit diagram is the utility model;

[0031] Figure 7 The circuit diagram of the electromagnetic relay in the utility model;

[0032] Figure 8 The circuit diagram of the electromagnetic switch in the utility model. DETAILED DESCRIPTION

[0033] As Figure 1 , Figures 3 to 8 A high-power starting motor, comprising a motor 1, an electromagnetic switch 31, a driving gear 21 connected to the motor 1 through a clutch mechanism, the electromagnetic switch 31 connected to the clutch mechanism through a yoke, an electronic relay 32 and an electromagnetic relay 33 arranged between the motor 1 and the electromagnetic switch 31.

[0034] The power supply terminal 321 of the electronic relay 32 is used for connecting the positive pole of the power supply, the control output terminal 322 is connected to the control side positive pole terminal 331 of the electromagnetic relay 33 through the first wire 41, and the negative pole grounding terminal 323 is connected to the negative pole terminal 51 of the motor 1 through the second wire 42.

[0035] The first static contact terminal 332 of the electromagnetic relay 33 is connected to the positive pole terminal 52 of the electromagnetic switch 31 through the third wire 43, the second static contact terminal 333 is connected to the control side common terminal 311 of the electromagnetic switch 31 through the fourth wire 44, and the first grounding terminal 334 is used for connecting the negative pole terminal 51 of the motor, in the embodiment, the first grounding terminal 334 is connected to the second grounding terminal 312 of the electromagnetic switch 31 through the fifth wire 45, or the first grounding terminal 334 can be directly connected to the negative pole terminal 51 of the motor through a wire.

[0036] The electromagnetic relay 33 includes oppositely arranged first static contact 335 and second static contact 336, relay movable contact 337, relay coil 338, the first static contact 335 and the first static contact terminal 332 are electrically connected, the second static contact 336 and the second static contact terminal 333 are electrically connected, the first end of the relay coil 338 and the first ground terminal 334 are connected, and the tail end and the control side positive terminal 331 are connected.

[0037] The third static contact 313 of the electromagnetic switch 31 is electrically connected with the positive terminal 52, the fourth static contact 314 is electrically connected with the positive terminal of the motor 1, and the second ground terminal 312 is electrically connected with the negative terminal 51 of the motor 1. The electromagnetic switch 31 includes oppositely arranged third static contact 313 and fourth static contact 314, electromagnetic switch movable contact 316 arranged at one end of iron core 315, suction coil 317 and holding coil 318 wound on iron core 315, the tail end of the suction coil 317 and the holding coil 318 are connected with the control side common terminal 311, the first end of the suction coil 317 is connected with the positive terminal of the motor 1, and the first end of the holding coil 318 is connected with the second ground terminal 312.

[0038] The electronic relay 32 can control the single operation time of the high-power starting motor. When the operation time of the high-power starting motor reaches the specified single operation time, the electronic relay controls power-off to stop the operation of the high-power starting motor, avoids overheating or damage of the motor caused by long-time starting, and thus realizes starting delay protection; the electronic relay 32 can control the starting interval time of the high-power starting motor, and when the starting interval time of the high-power starting motor is too short, the electronic relay prevents the motor from starting to prevent the motor from being burned due to high temperature caused by continuous starting of the motor, and realizes continuous starting protection; the electronic relay 32 can detect the state of the third static contact 313, the fourth static contact 314 and the electromagnetic switch movable contact 316 of the electromagnetic switch 31, and can identify the fault such as top tooth or milling tooth of the driving gear 21 and the engine flywheel gear ring in the meshing process of the clutch mechanism. When an abnormal condition is detected, the electronic relay 32 quickly powers off, thereby realizing flexible meshing, reducing mechanical impact and wear, and prolonging the service life of the clutch mechanism and related components; the electronic relay 32 can detect the current of the control side common terminal 311 of the electromagnetic switch 31, detect that the engine starts, and control power-off to avoid high-speed rotation of the driving gear 21 of the high-power starting motor driven by the flywheel gear ring of the engine, and prohibit the operation of the high-power starting motor when the engine is running;

[0039] The motor 1 housing extends upward to provide a mounting seat 22; one end of the electromagnetic switch 31 is fixedly mounted in front of the mounting seat 22, the core 315 of the electromagnetic switch 31 extends into the cavity of the mounting seat 22, and is connected with the clutch mechanism through a yoke; the electronic relay 32 is fixedly mounted on the side of the mounting seat 22 through a first boss circular seat 23; the electromagnetic relay 33 is fixedly mounted above the mounting seat 22 through a second boss circular seat 24; the driving gear 21 and the engine flywheel gear ring of the clutch mechanism are engaged or separated through the axial movement of the core 315 of the electromagnetic switch 31 and the yoke.

[0040] The above only describes the preferred embodiments of the present application, and is not intended to limit the present application, and any modification made by those skilled in the art without departing from the spirit of the present application falls within the protection scope of the present application.

Claims

1. A high-power starting motor, comprising a motor (1) and an electromagnetic switch (31), wherein a drive gear (21) is connected to the extension shaft of the motor (1) via a clutch mechanism, and the electromagnetic switch (31) is connected to the clutch mechanism via a shift fork, characterized in that: The motor (1) and the electromagnetic switch (31) are provided with an electronic relay (32) and an electromagnetic relay (33); The power supply connection end (321) of the electronic relay (32) is used for connecting the positive pole of the power supply, the control output connection end (322) is connected to the control side positive pole connection end (331) of the electromagnetic relay (33) through the first lead wire (41), and the negative pole grounding connection end (323) is connected to the negative pole connection end (51) of the motor (1) through the second lead wire (42); The first static contact connection end (332) of the electromagnetic relay (33) is connected to the positive pole connection end (52) of the electromagnetic switch (31) through the third lead wire (43), the second static contact connection end (333) is connected to the control side common connection end (311) of the electromagnetic switch (31) through the fourth lead wire (44), and the first grounding connection end (334) is used for connecting the negative pole connection end (51) of the motor. The third static contact (313) and the positive pole connection end (52) of the electromagnetic switch (31) are electrically connected, the fourth static contact (314) and the positive pole of the motor (1) are electrically connected, and the second grounding connection end (312) and the negative pole connection end (51) of the motor (1) are electrically connected.

2. A high power starting motor as claimed in claim 1, wherein: The electromagnetic relay (33) comprises oppositely arranged first and second static contacts (335) and (336), a relay movable contact (337) and a relay coil (338), the first static contact (335) is electrically connected to the first static contact connection end (332), the second static contact (336) is electrically connected to the second static contact connection end (333), the relay coil (338) has a first end connected to the first grounding connection end (334) and a second end connected to the control side positive pole connection end (331).

3. The high power starting motor of claim 1, wherein: The electromagnetic switch (31) comprises oppositely arranged third and fourth static contacts (313) and (314), an electromagnetic switch movable contact (316) arranged at one end of an iron core (315), a pull-in coil (317) and a holding coil (318) wound on the iron core (315), the second ends of the pull-in coil (317) and the holding coil (318) are connected to the control side common connection end (311), the first end of the pull-in coil (317) is connected to the positive pole of the motor (1), and the first end of the holding coil (318) is connected to the second grounding connection end (312).

4. The high power starting motor of claim 1, wherein: The first grounding connection end (334) is connected to the second grounding connection end (312) of the electromagnetic switch (31) through the fifth lead wire (45).

5. The high power starting motor of claim 1, wherein: The housing of the motor (1) is upwardly extended to be provided with a mounting seat (22).

6. A high power starting motor as claimed in claim 5, wherein: One end of the electromagnetic switch (31) is fixedly mounted in front of the mounting seat (22), the iron core (315) of the electromagnetic switch (31) extends into the cavity of the mounting seat (22) and is connected to a clutch mechanism through a yoke.

7. The high power starting motor of claim 5 wherein: The electronic relay (32) is fixedly mounted on the side of the mounting seat (22) through a first boss circular seat (23).

8. The high power starting motor of claim 5, wherein: The electromagnetic relay (33) is fixedly mounted above the mounting seat (22) through a second boss circular seat (24).

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