CN217051358U - Electric control system of speed reducer - Google Patents
Electric control system of speed reducer Download PDFInfo
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- CN217051358U CN217051358U CN202122742637.6U CN202122742637U CN217051358U CN 217051358 U CN217051358 U CN 217051358U CN 202122742637 U CN202122742637 U CN 202122742637U CN 217051358 U CN217051358 U CN 217051358U
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Abstract
The utility model provides an electric control system of a speed reducer, which comprises a main circuit, a control circuit and a speed reducing circuit; the main circuit and the speed reducing circuit are respectively connected with the control circuit through signals; controlling the traveling mechanism to move at a high speed between a forward speed reducing point and a backward speed reducing point; the traveling mechanism can also be controlled to move at low speed between the forward deceleration point and the forward limit point and between the backward deceleration point and the backward limit point; and controlling the speed of the crane travelling mechanism in two moving directions.
Description
Technical Field
The utility model relates to a hoist field, concretely relates to decelerator's electrical system.
Background
The traveling mechanism of the crane is generally provided with a limit switch, and when the traveling mechanism reaches a front limit and a rear limit, the power supply of the hoisting mechanism can be automatically cut off, so that the hoisting motor stops running. However, as the hoisting mechanism adopts a double-speed motor or adopts frequency conversion to realize more and more double-speed application, the parking inertia is larger at high speed, only two limits are provided, and the travelling mechanism cannot be effectively limited.
In Chinese application No. CN 201320439388.6; the announcement day is: 2013.12.25; the patent document discloses a hoisting mechanism control circuit and a crane; the system comprises a stop control branch and a two-speed switching control branch, wherein a safety pre-limit switch is connected in series on the two-speed switching control branch, and the safety pre-limit switch is connected in parallel with a normally open auxiliary contact of a descending contactor; the stop control branch is connected in series with an end point safety limit switch, and the end point safety limit switch is connected in parallel with a normally closed auxiliary contact of the ascending contactor.
In the control circuit, however, a safety pre-limiting point is only arranged on the lifting line of the lifting hook; the circuit can only control the speed of the lifting hook when the lifting hook rises; it can only realize speed control in one direction; speed control in both directions cannot be achieved.
Disclosure of Invention
The utility model provides an electrical system of decelerator carries out speed control to two moving directions of hoist running gear.
In order to achieve the above purpose, the technical scheme of the utility model is that: an electric control system of a speed reducing device comprises a main circuit, a control circuit and a speed reducing circuit; the main circuit and the speed reducing circuit are respectively connected with the control circuit through signals.
The main circuit comprises a contact 3KM1.1, a contact 3KM2.1, a contact 3KM3.1, a contact 3KM4.1 and a motor; contact 3KM1.1 is connected to a first power source, and contact 3KM3.1 is connected to contact 3KM 1.1; the motor is connected with a contact 3KM 3.1; contact 3KM2.1 is connected in parallel with contact 3KM 1.1; one end of the contact 3KM4.1 is connected with the contact 3KM 1.1; the other end of the contact 3KM4.1 is connected with a motor.
The speed reducing circuit is connected with a second power supply; the device comprises a normally closed limit travel switch ST6, a relay 3K2, a normally closed limit travel switch ST7, a relay 3K3, a speed reduction travel switch ST8 and a relay 3K 4; the normally closed limit travel switch ST6 is connected with a relay 3K 2; the normally closed limit travel switch ST7 is connected with the relay; the deceleration travel switch ST8 is connected to the relay 3K4.
The control circuit comprises a manual double-contact switch SB5, a normally closed contact 3K6.1, a relay 3K5, a relay 3K6, a manual double-contact switch SB6, a relay 3K7, a normally closed contact 3K7.1, a relay 3K8, a contact 3K4.1, a contact 3K2.1, a relay 3KM3, a contact 3K5.1, a contact 3K8.1, a contact 3K3.1, a contact 3K6.2, a contact 3K2.2, a normally closed contact 3K4.2, a relay 3KM4, a contact 3K7.2, a contact 3K3.2, a contact 3K5.2, a contact 3K2.3, a normally closed contact 3KM2.2, a relay 3KM1, a contact 3K6.3, a contact 3K7.3, a contact 3K3, a normally closed contact 3KM1.2, a relay 3KM2 and a contact 3K 8.1.
The SB5.1 end of the manual double-contact switch SB5 is connected with the normally closed contact 3K 6.1; the normally closed contact 3K6.1 is connected with a relay 3K 5; the SB5.2 end of the manual double-contact switch SB5 is connected with the relay 3K 6; the SB6.2 end of the manual double-contact switch SB6 is connected with the relay 3K 7; the SB6.1 end of the manual double-contact switch SB6 is connected with the normally closed contact 3K 7.1; the normally closed contact 3K7.1 is connected to a relay 3K8.
Contact 3K4.1 is connected to contact 3K2.1, and contact 3K2.1 is connected to relay 3KM 3; the contact 3K8.1 is connected with the contact 3K 3.1; contact 3K5.1 is connected in parallel with contact 3K 4.1; the contacts 3K8.1 and 3K3.1 are connected in parallel with the contacts 3K4.1 and 3K 2.1.
The contact 3K6.2 is connected with the contact 3K2.2, the contact 3K2.2 is connected with the normally closed contact 3K4.2, and the normally closed contact 3K4.2 is connected with the relay 3KM 4; contact 3K7.2 is connected to contact 3K 3.2; the contact 3K7.2 and the contact 3K3.2 are connected with the contact 3K6.2 and the contact 3K2.2 in parallel;
the contact 3K5.2 is connected with the contact 3K2.3, the contact 3K2.3 is connected with the normally closed contact 3KM2.2, and the normally closed contact 3KM2.2 is connected with the relay 3KM 1; contact 3K6.3 is connected in parallel with contact 3K 5.2.
Contact 3K7.3 contact 3K3.3 is connected, contact 3K3.3 is connected with normally closed contact 3KM1.2, normally closed contact 3KM1.2 is connected with relay 3KM2, and contact 3K8.1 is connected in parallel with contact 3K 7.2.
The normally closed limit travel switch ST6, the normally closed limit travel switch ST7 and the speed reduction travel switch ST8 of the electric control system are arranged on the travelling mechanism; when in use, an advancing limiting point is arranged along one end of the advancing direction of the walking mechanism; a backward limiting point is arranged at one end of the backward direction of the walking mechanism; a forward deceleration point and a backward deceleration point are arranged between the forward limit point and the backward limit point; the forward deceleration point is arranged close to the forward limit point; the backward deceleration point is arranged close to the backward limit point; collision blocks are arranged on the forward limiting point, the forward deceleration point, the backward deceleration point and the backward limiting point; the forward speed reducing point and the backward speed reducing point are used for controlling the travelling mechanism to reduce speed after being contacted with a speed reducing travel switch ST 8; the forward limit point is used for controlling the walking mechanism to stop after being contacted with a normally closed limit travel switch ST 6; the backward limit point is used for controlling the running mechanism to stop after being contacted with a normally closed limit travel switch ST 7.
When the normally closed limit travel switch ST6 is not contacted with the collision block of the forward limit point, the relay 3K2 is electrified; contact 3K2.2, contact 3K2.1 and contact 3K2.3 are closed. When the normally closed limit travel switch ST7 is not contacted with the bump of the backward limit point, the relay 3K3 is electrified; contact 3K3.1, contact 3K3.2 and contact 3K3.3 are closed.
Controlling the traveling mechanism to advance; when the SB5.2 end of the manual double-contact switch SB5 is closed; the relay 3K6 is powered; contact 3K6.2 and contact 3K6.3 are closed; the relay 3KM4 and the relay 3KM1 are powered; contact 3KM4.1 and contact 3KM1.1 are closed; the motor drives the travelling mechanism to advance at a high speed; meanwhile, the normally closed contact 3KM1.2 is disconnected, the normally closed contact 3K6.1 is disconnected, and the relay 3K5 loses power; the advancing of the travelling mechanism is prevented from being influenced.
When a deceleration travel switch ST8 of the traveling mechanism collides with a collision block of an advancing limiting point; the deceleration stroke switch ST8 is closed; the relay 3K4 is powered; the normally closed contact 3K4.2 is disconnected, and the relay 3KM4 loses power; the contact 3K4.1 is closed, and the relay 3KM3 is electrified; the contact 3KM3.1 is closed; the contact 3KM4.1 is disconnected; the traveling mechanism is switched to low-speed advancing; when the normally closed limit travel switch ST6 of the traveling mechanism collides with the collision block of the forward limit point; the normally closed limit travel switch ST6 is off; the relay 3K2 loses power, and the contact 3K2.1, the contact 3K2.2 and the contact 3K2.3 are disconnected; the contact 3KM1.1 and the contact 3KM3.1 are disconnected, and the motor stops acting; the traveling mechanism stops advancing.
Controlling the traveling mechanism at the forward limiting point to retreat; when the SB6.2 end of the manual double-contact switch SB6 is closed; the relay 3K7 is powered; contact 3K7.2 and contact 3K7.3 are closed; at the moment, as the speed reduction travel switch ST8 is closed, the normally closed contact 3K4.2 is opened, and the contact 3K4.1 is closed; the relay 3KM3 and the relay 3KM2 are powered; the traveling mechanism can retreat at a low speed; meanwhile, the normally closed contact 3K7.1 is disconnected, and the relay 3K8 loses power.
When the speed reduction travel switch ST8 of the traveling mechanism collides with the collision block of the advancing limiting point; the deceleration stroke switch ST8 is off; the relay 3K4 loses power; the normally closed contact 3K4.2 is closed; the contact 3K4.1 is disconnected; the relay 3KM4 is electrified, and the relay 3KM3 is disconnected; the traveling mechanism is switched to high-speed backward movement; after the deceleration travel switch ST8 of the traveling mechanism collides with the collision block of the rear limit point; the deceleration travel switch ST8 is closed; the relay 3K4 is powered; the normally closed contact 3K4.2 is disconnected; contact 3K4.1 is closed; the relay 3KM4 is switched off, and the relay 3KM3 is powered; the traveling mechanism is switched to low-speed backward movement; when the normally closed limit travel switch ST7 of the traveling mechanism collides with the collision block of the backward limit point; the normally closed limit travel switch ST7 is off; the relay 3K3 loses power, and the contact 3K3.1, the contact 3K3.2 and the contact 3K3.3 are disconnected; the contact 3KM2.1 and the contact 3KM3.1 are disconnected, and the motor stops acting; the traveling mechanism stops moving backward.
The system can control the traveling mechanism to move at a high speed between the forward speed reducing point and the backward speed reducing point; the traveling mechanism can also be controlled to move at low speed between the forward decelerating point and the forward limiting point and between the backward decelerating point and the backward limiting point.
Further, the motor is provided with a thermistor.
Further, the speed reduction circuit further comprises a relay 3F1, a contact 3F1 and a relay 3K 1; one end of the relay 3F1 is connected with a thermistor of the motor; the other end of the relay 3F1 is connected with a second power supply; the contact 3F1 is connected with a relay 3K 1; the control circuit also comprises a contact 3K1.1 and a contact 3K 1.2; contact 3K1.1 is connected between contact 3K5.2 and contact 3K 2.3; contact 3K1.2 is connected between contact 3K7.3 and contact 3K 3.3.
According to the arrangement, the relay 3F1 is powered by the second power supply, and the relay 3F1 is connected with the thermistor; meanwhile, a contact 3K1.1 is connected between a contact 3K5.2 and a contact 3K 2.3; contact 3K1.2 is connected between contact 3K7.3 and contact 3K 3.3; when the thermistor works normally, the relay 3F1 is electrified; contact 3F1 is closed, relay 3K1 is powered; contact 3K1.1 and contact 3K1.2 are closed; the walking mechanism is not affected when moving forwards or backwards; when the temperature of the thermistor is overheated, the resistance of the thermistor is increased; the relay 3F1 loses power, and the contact 3F1 is disconnected; the relay 3K1 loses power; contact 3K1.1 and contact 3K1.2 are disconnected; the running mechanism does not act any more; the temperature of the motor is prevented from being continuously increased due to the action of the traveling mechanism.
Furthermore, the control circuit also comprises a contact 3KM1.3, a contact 3KM2.3 and an acousto-optic indication module; the acousto-optic indicating module comprises an illuminating lamp EL 5; the contact 3KM1.3 is connected with a lighting lamp EL5, and the contact 3KM2.3 is connected with the contact 3KM1.3 in parallel.
With the arrangement, when the travelling mechanism moves forwards or backwards, the prompt is sent out through the light.
Furthermore, the acousto-optic indication module also comprises a horn HA2, and the horn HA2 is connected with the illuminating lamp EL5 in parallel.
With the above arrangement, when the traveling mechanism moves forward or backward, a prompt is given by sound.
Further, contact 3KM1.1 interlocks with contact 3KM 2.1; contact 3KM3.1 interlocks with contact 3KM 4.1. When contact 3KM1.1 is closed, contact 3KM2.1 is open; when contact 3KM2.1 is closed, contact 3KM1.1 is open; when contact 3KM3.1 is closed, contact 3KM4.1 is open; when contact 3KM4.1 is closed, contact 3KM3.1 is open; the use is safe.
Furthermore, the brake device also comprises a brake circuit; the brake circuit comprises a contact 3KM3.2, a contact 3KM4.2 and a normally closed brake; one end of the contact 3KM4.2 is connected with a first power supply; the normally closed brake is connected with a contact 3KM 4.2; one end of the contact 3KM3.2 is connected with a first power supply; the other end of contact 3KM3.2 is connected to the other end of contact 3KM 4.2.
Through the arrangement, the relay 3KM3 is powered; closing an electric shock 3KM 3.2; opening a normally closed brake; then the traveling mechanism realizes forward movement or backward movement at high speed; the power is obtained through a relay 3KM 4; closing an electric shock 3KM 4.2; opening a normally closed brake; and then the traveling mechanism realizes low-speed forward or low-speed backward.
Drawings
Fig. 1 is a block diagram of the present invention.
Fig. 2 is a schematic diagram of the main circuit and the speed reducing circuit of the present invention.
Fig. 3 is a schematic diagram of the control circuit of the present invention.
Fig. 4 is a schematic diagram of the middle brake circuit of the present invention.
Fig. 5 is a schematic diagram of the positions of the forward limiting point, the forward decelerating point, the backward decelerating point and the backward limiting point of the present invention.
In the above figures: 1-a speed reduction circuit; 2-a control circuit; 3-a main circuit; 4-a brake circuit; 51-a first power supply; 52-a second power supply; 6-forward restriction site; 7-forward deceleration point; 8-retreat deceleration point; 9-retrogradation restriction site.
Detailed Description
The present invention will be described in further detail with reference to the accompanying drawings and specific embodiments.
As shown in fig. 1-5; an electric control system of a speed reducing device comprises a main circuit 3, a control circuit 2, a speed reducing circuit 1 and a brake circuit 4; the main circuit 3, the speed reducing circuit 1 and the brake circuit 4 are respectively connected with the control circuit 2 through signals.
The main circuit 3 is connected with a first power supply 51; the main circuit 3 comprises a contact 3KM1.1, a contact 3KM2.1, a contact 3KM3.1, a contact 3KM4.1 and a motor 31; contact 3KM1.1 is connected to a first power source, and contact 3KM3.1 is connected to contact 3KM 1.1; the motor is connected with a contact 3KM 3.1; contact 3KM2.1 is connected in parallel and interlocked with contact 3KM 1.1; one end of the contact 3KM4.1 is connected with the contact 3KM 1.1; the other end of the contact 3KM4.1 is connected with a motor; contact 3KM4.1 interlocks with contact 3KM 3.1.
When contact 3KM1.1 is closed, contact 3KM2.1 is open; when contact 3KM2.1 is closed, contact 3KM1.1 is open; when contact 3KM3.1 is closed, contact 3KM4.1 is open; when contact 3KM4.1 is closed, contact 3KM3.1 is open; the use is safe.
The speed-down circuit 1 is connected to the second power supply 52; the device comprises a normally closed limit travel switch ST6, a relay 3K2, a normally closed limit travel switch ST7, a relay 3K3, a speed reduction travel switch ST8 and a relay 3K 4; the normally closed limit travel switch ST6 is connected with the relay 3K 2; the normally closed limit travel switch ST7 is connected with the relay; the deceleration travel switch ST8 is connected to the relay 3K4.
The brake circuit 4 comprises a contact 3KM3.2, a contact 3KM4.2 and a normally closed brake 41; one end of the contact 3KM4.2 is connected to a first power supply 51; the normally closed brake is connected with a contact 3KM 4.2; one end of contact 3KM3.2 is connected to a first power supply 51; the other end of contact 3KM3.2 is connected to the other end of contact 3KM 4.2.
The control circuit 2 is connected with the second circuit; the control circuit 2 comprises a manual double-contact switch SB5, a normally closed contact 3K6.1, a relay 3K5, a relay 3K6, a manual double-contact switch SB6, a relay 3K7, a normally closed contact 3K7.1, a relay 3K8, a contact 3K4.1, a contact 3K2.1, a relay 3KM3, a contact 3K5.1, a contact 3K8.1, a contact 3K3.1, a contact 3K6.2, a contact 3K2.2, a normally closed contact 3K4.2, a relay 3KM4, a contact 3K7.2, a contact 3K3.2, a contact 3K5.2, a contact 3K2.3, a contact normally closed 3KM2.2, a relay 3KM1, a contact 3K6.3, a contact 3K7.3, a contact 3K3.3, a normally closed contact 3KM1.2, a relay 3KM2 and a contact 3K 8.1.
The SB5.1 end of the manual double-contact switch SB5 is connected with the normally closed contact 3K 6.1; the normally closed contact 3K6.1 is connected with a relay 3K 5; the SB5.2 end of the manual double-contact switch SB5 is connected with the relay 3K 6; the SB6.2 end of the manual double-contact switch SB6 is connected with the relay 3K 7; the SB6.1 end of the manual double-contact switch SB6 is connected with the normally closed contact 3K 7.1; the normally closed contact 3K7.1 is connected to a relay 3K8.
Contact 3K4.1 is connected to contact 3K2.1, and contact 3K2.1 is connected to relay 3KM 3; the contact 3K8.1 is connected with the contact 3K 3.1; contact 3K5.1 is connected in parallel with contact 3K 4.1; the contacts 3K8.1 and 3K3.1 are connected in parallel with the contacts 3K4.1 and 3K 2.1.
The contact 3K6.2 is connected with the contact 3K2.2, the contact 3K2.2 is connected with the normally closed contact 3K4.2, and the normally closed contact 3K4.2 is connected with the relay 3KM 4; contact 3K7.2 is connected to contact 3K 3.2; the contact 3K7.2 and the contact 3K3.2 are connected with the contact 3K6.2 and the contact 3K2.2 in parallel;
the contact 3K5.2 is connected with the contact 3K2.3, the contact 3K2.3 is connected with the normally closed contact 3KM2.2, and the normally closed contact 3KM2.2 is connected with the relay 3KM 1; contact 3K6.3 is connected in parallel with contact 3K 5.2.
Contact 3K7.3 contact 3K3.3 is connected, contact 3K3.3 is connected to normally closed contact 3KM1.2, normally closed contact 3KM1.2 is connected to relay 3KM2, and contact 3K8.1 is connected in parallel to contact 3K 7.2.
In this embodiment, relay 3K1 mates with contacts 3K1.1, 3K 1.2; relay 3K2 mates with contact 3K2.1, contact 3K2.2, and contact 3K 2.3; relay 3K3 mates with contact 3K3.1, contact 3K3.2, and contact 3K 3.3; relay 3K4 mates with contact 3K4.1 and normally closed contact 3K 4.2; relay 3K5 mates with contact 3K5.1 and contact 3K 5.2; relay 3K6 mates with normally closed contact 3K6.1, contact 3K6.2 and contact 3K 6.3; relay 3K7 mates with normally closed contact 3K7.1, contact 3K7.2, and contact 3K 7.3; relay 3K8 mates with contact 3K 8.1; relay 3KM1 mated with contact 3KM1.1, contact 3KM1.2, and contact 3KM 1.3; relay 3KM2 mates with contact 3KM2.1, contact 3KM2.2, and contact 3KM 2.3; the relay 3KM3 is matched with the contact 3KM 3.1; relay 3KM4 is mated with contact 3KM 4.1.
The normally closed limit travel switch ST6, the normally closed limit travel switch ST7 and the speed reduction travel switch ST8 of the electric control system are arranged on the travelling mechanism; when in use, an advancing limiting point 6 is arranged at one end along the advancing direction of the walking mechanism; a backward limiting point 9 is arranged at one end of the backward direction of the walking mechanism; a forward deceleration point 7 and a backward deceleration point 8 are arranged between the forward limiting point 6 and the backward limiting point 9; the forward deceleration point 7 is arranged close to the forward limit point 6; the backward deceleration point 8 is arranged close to the backward limit point 9; collision blocks are arranged on the forward limiting point 6, the forward decelerating point 7, the backward decelerating point 8 and the backward limiting point 9; the forward deceleration point 7 and the backward deceleration point 8 are used for controlling the traveling mechanism to decelerate after being contacted with a deceleration travel switch ST 8; the forward limit point 6 is used for controlling the walking mechanism to stop after being contacted with a normally closed limit travel switch ST 6; the backward limit point 9 is used for controlling the running mechanism to stop after being contacted with a normally closed limit travel switch ST 7.
When the normally closed limit travel switch ST6 is not contacted with the collision block of the forward limit point 6, the relay 3K2 is electrified; contact 3K2.2, contact 3K2.1 and contact 3K2.3 and closed. When the normally closed limit travel switch ST7 is not in contact with the bump of the backward limit point 9, the relay 3K3 is electrified; contact 3K3.1, contact 3K3.2 and contact 3K3.3 are closed.
Controlling the traveling mechanism to advance; when the SB5.2 end of the manual double-contact switch SB5 is closed; the relay 3K6 is powered; contact 3K6.2 and contact 3K6.3 are closed; the relay 3KM4 and the relay 3KM1 are powered; contact 3KM4.1 and contact 3KM1.1 are closed; the motor drives the travelling mechanism to advance at a high speed; meanwhile, the normally closed contact 3KM1.2 is disconnected, the normally closed contact 3K6.1 is disconnected, and the relay 3K5 loses power; the advancing of the travelling mechanism is prevented from being influenced.
When the deceleration travel switch ST8 of the traveling mechanism collides with the collision block of the advance limit point 6; the deceleration stroke switch ST8 is closed; the relay 3K4 is powered; the normally closed contact 3K4.2 is disconnected, and the relay 3KM4 loses power; the contact 3K4.1 is closed, and the relay 3KM3 is electrified; the contact 3KM3.1 is closed; the contact 3KM4.1 is disconnected; the traveling mechanism is switched to low-speed advancing; when the normally closed limit travel switch ST6 of the traveling mechanism collides with the collision block of the forward limit point 6; the normally closed limit travel switch ST6 is turned off; the relay 3K2 loses power, and the contact 3K2.1, the contact 3K2.2 and the contact 3K2.3 are disconnected; the contact 3KM1.1 and the contact 3KM3.1 are disconnected, and the motor stops acting; the traveling mechanism stops advancing.
Controlling the travelling mechanism at the forward limit point 6 to retreat; when the SB6.2 end of the manual double-contact switch SB6 is closed; the relay 3K7 is powered; contact 3K7.2 and contact 3K7.3 are closed; at the moment, as the speed reduction travel switch ST8 is closed, the normally closed contact 3K4.2 is opened, and the contact 3K4.1 is closed; the relay 3KM3 and the relay 3KM2 are electrified; the traveling mechanism can retreat at a low speed; meanwhile, the normally closed contact 3K7.1 is disconnected, and the relay 3K8 loses power.
When the deceleration travel switch ST8 of the traveling mechanism collides with the collision block of the forward limit point 6; the deceleration stroke switch ST8 is off; the relay 3K4 loses power; the normally closed contact 3K4.2 is closed; contact 3K4.1 opens; the relay 3KM4 is electrified, and the relay 3KM3 is disconnected; the traveling mechanism is switched to high-speed backward movement; after the deceleration travel switch ST8 of the traveling mechanism collides with the collision block of the rear limit point; the deceleration travel switch ST8 is closed; the relay 3K4 is powered; the normally closed contact 3K4.2 is disconnected; contact 3K4.1 is closed; the relay 3KM4 is switched off, and the relay 3KM3 is electrified; the traveling mechanism is switched to low-speed backward movement; when the normally closed limit travel switch ST7 of the traveling mechanism collides with the collision block of the backward limit point 9; the normally closed limit travel switch ST7 is turned off; the relay 3K3 loses power, and the contact 3K3.1, the contact 3K3.2 and the contact 3K3.3 are disconnected; the contact 3KM2.1 and the contact 3KM3.1 are disconnected, and the motor stops acting; the traveling mechanism stops moving backward.
Controlling the traveling mechanism to retreat; when the SB6.2 end of the manual double-contact switch SB6 is closed; the relay 3K7 is powered; simultaneously, the contact 3K7.2 and the contact 3K7.3 are closed; the relay 3KM4 and the relay 3KM2 are electrified; contact 3KM4.1 and contact 3KM2.1 are closed; the motor drives the travelling mechanism to retreat at a high speed; meanwhile, the normally closed contact 3KM2.2 is disconnected, the normally closed contact 3K7.1 is disconnected, and the relay 3K8 loses power; avoiding influencing the backward movement of the travelling mechanism.
When a deceleration travel switch ST8 of the traveling mechanism collides with a collision block of a rear limit point; the deceleration stroke switch ST8 is closed; the relay 3K4 is powered; the normally closed contact 3K4.2 is disconnected; the relay 3KM4 loses power; contact 3K4.1 is closed; the relay 3KM3 is electrified; the contact 3KM3.1 is closed; contact 3KM4.1 is open; the traveling mechanism is switched to low-speed backward movement; when the normally closed limit travel switch ST7 of the traveling mechanism collides with the collision block of the backward limit point 9; the normally closed limit travel switch ST7 is turned off; the relay 3K3 loses power, and the contact 3K3.1, the contact 3K3.2 and the contact 3K3.3 are disconnected; the contact 3KM2.1 is disconnected with the contact 3KM3.1, and the motor stops acting; the traveling mechanism stops moving backward.
Controlling the traveling mechanism at the backward limit point 9 to advance; when the SB5.2 end of the manual double-contact switch SB5 is closed; the relay 3K6 is powered; contact 3K6.2 and contact 3K6.3 are closed; at the moment, as the speed reduction travel switch ST8 is closed, the normally closed contact 3K4.2 is opened, and the contact 3K4.1 is closed; the relay 3KM3 and the relay 3KM1 are electrified; the traveling mechanism can advance at a low speed; meanwhile, the normally closed contact 3K6.1 is disconnected, and the relay 3K5 loses power; the forward movement of the travelling mechanism is prevented from being influenced.
When the deceleration travel switch ST8 of the traveling mechanism collides with the collision block of the backward limit point 9; the deceleration stroke switch ST8 is off; the relay 3K4 loses power; closing a normally closed contact 3K 4.2; contact 3K4.1 opens; the relay 3KM4 is electrified, and the relay 3KM3 is disconnected; the traveling mechanism is switched to advance at a high speed; when the deceleration travel switch ST8 of the traveling mechanism collides with the collision block of the forward limit point 6; the deceleration stroke switch ST8 is closed; the relay 3K4 is powered; the normally closed contact 3K4.2 is disconnected; contact 3K4.1 is closed; the relay 3KM4 is switched off, and the relay 3KM3 is powered; the traveling mechanism is switched to low-speed advancing; when the normally closed limit travel switch ST6 of the traveling mechanism collides with the collision block of the forward limit point 6; the normally closed limit travel switch ST6 is off; the relay 3K2 loses power, and the contact 3K2.1, the contact 3K2.2 and the contact 3K2.3 are disconnected; the contact 3KM1.1 and the contact 3KM3.1 are disconnected, and the motor stops acting; the traveling mechanism stops advancing.
The power is obtained through a relay 3KM 3; closing an electric shock 3KM 3.2; opening a normally closed brake; the traveling mechanism further realizes high-speed forward or high-speed backward; the power is obtained through a relay 3KM 4; closing an electric shock 3KM 4.2; opening a normally closed brake; and then the traveling mechanism realizes low-speed forward or low-speed backward.
The system can control the travelling mechanism to move at a high speed between the forward deceleration point 7 and the backward deceleration point 8; the traveling mechanism can be controlled to move at a low speed between the forward deceleration point 7 and the forward limit point 6 and between the backward deceleration point 8 and the backward limit point 9.
The motor is provided with a thermistor. The speed reduction circuit further comprises a relay 3F1, a contact 3F1 and a relay 3K 1; one end of the relay 3F1 is connected with a thermistor of the motor; the other end of the relay 3F1 is connected with a second power supply; contact 3F1 is connected to relay 3K 1; the control circuit also comprises a contact 3K1.1 and a contact 3K 1.2; contact 3K1.1 is connected between contact 3K5.2 and contact 3K 2.3; contact 3K1.2 is connected between contact 3K7.3 and contact 3K 3.3.
The relay 3F1 is powered by a second power supply, and the relay 3F1 is connected with the thermistor; meanwhile, the contact 3K1.1 is connected between the contact 3K5.2 and the contact 3K 2.3; contact 3K1.2 is connected between contact 3K7.3 and contact 3K 3.3; when the thermistor works normally, the relay 3F1 is powered; contact 3F1 is closed, relay 3K1 is powered; contact 3K1.1 and contact 3K1.2 are closed; so that the traveling mechanism is not influenced when moving forwards or backwards; when the temperature of the thermistor is overheated, the resistance of the thermistor is increased; the relay 3F1 loses power, and the contact 3F1 is disconnected; the relay 3K1 loses power; the contact 3K1.1 and the contact 3K1.2 are disconnected; the running mechanism does not act any more; the temperature of the motor is prevented from being continuously increased due to the action of the traveling mechanism.
The control circuit also comprises a contact 3KM1.3, a contact 3KM2.3 and an acousto-optic indication module; the acousto-optic indicating module comprises an illuminating lamp EL5 and a horn HA 2; the contact 3KM1.3 is connected with an illuminating lamp EL5, and the contact 3KM2.3 is connected with the contact 3KM1.3 in parallel; the horn HA2 is connected in parallel with the lighting lamp EL 5. When the travelling mechanism moves forwards or backwards, the light gives out a prompt, and the sound gives out a prompt.
Claims (7)
1. An electric control system of a speed reducer is characterized in that: comprises a main circuit, a control circuit and a speed reducing circuit; the main circuit and the speed reducing circuit are respectively connected with the control circuit through signals;
the main circuit comprises a contact 3KM1.1, a contact 3KM2.1, a contact 3KM3.1, a contact 3KM4.1 and a motor; contact 3KM1.1 is connected to a first power source, and contact 3KM3.1 is connected to contact 3KM 1.1; the motor is connected with a contact 3KM 3.1; contact 3KM2.1 is connected in parallel with contact 3KM 1.1; one end of the contact 3KM4.1 is connected with the contact 3KM 1.1; the other end of the contact 3KM4.1 is connected with a motor;
the speed reducing circuit is connected with a second power supply; the device comprises a normally closed limit travel switch ST6, a relay 3K2, a normally closed limit travel switch ST7, a relay 3K3, a speed reduction travel switch ST8 and a relay 3K 4; the normally closed limit travel switch ST6 is connected with the relay 3K 2; the normally closed limit travel switch ST7 is connected with the relay; the speed reduction travel switch ST8 is connected with the relay 3K 4;
the control circuit comprises a manual double-contact switch SB5, a normally closed contact 3K6.1, a relay 3K5, a relay 3K6, a manual double-contact switch SB6, a relay 3K7, a normally closed contact 3K7.1, a relay 3K8, a contact 3K4.1, a contact 3K2.1, a relay 3KM3, a contact 3K5.1, a contact 3K8.1, a contact 3K3.1, a contact 3K6.2, a contact 3K2.2, a normally closed contact 3K4.2, a relay 3KM4, a contact 3K7.2, a contact 3K3.2, a contact 3K5.2, a contact 3K2.3, a normally closed contact 3KM2.2, a relay 3KM1, a contact 3K6.3, a contact 3K7.3, a contact 3K3.3, a normally closed contact 3KM1.2, a relay 3KM2 and a contact 3K 8.1;
the SB5.1 end of the manual double-contact switch SB5 is connected with the normally closed contact 3K 6.1; the normally closed contact 3K6.1 is connected with a relay 3K 5; the SB5.2 end of the manual double-contact switch SB5 is connected with the relay 3K 6; the SB6.2 end of the manual double-contact switch SB6 is connected with the relay 3K 7; the SB6.1 end of the manual double-contact switch SB6 is connected with the normally closed contact 3K 7.1; the normally closed contact 3K7.1 is connected with a relay 3K 8;
the contact 3K4.1 is connected with the contact 3K2.1, and the contact 3K2.1 is connected with the relay 3KM 3; the contact 3K8.1 is connected with the contact 3K 3.1; contact 3K5.1 is connected in parallel with contact 3K 4.1; the contact 3K8.1 and the contact 3K3.1 are connected with the contact 3K4.1 and the contact 3K2.1 in parallel;
the contact 3K6.2 is connected with the contact 3K2.2, the contact 3K2.2 is connected with the normally closed contact 3K4.2, and the normally closed contact 3K4.2 is connected with the relay 3KM 4; contact 3K7.2 is connected to contact 3K 3.2; the contact 3K7.2 and the contact 3K3.2 are connected with the contact 3K6.2 and the contact 3K2.2 in parallel;
the contact 3K5.2 is connected with the contact 3K2.3, the contact 3K2.3 is connected with the normally closed contact 3KM2.2, and the normally closed contact 3KM2.2 is connected with the relay 3KM 1; contact 3K6.3 is connected in parallel with contact 3K 5.2;
contact 3K7.3 contact 3K3.3 is connected, contact 3K3.3 is connected with normally closed contact 3KM1.2, normally closed contact 3KM1.2 is connected with relay 3KM2, and contact 3K8.1 is connected in parallel with contact 3K 7.2.
2. An electric control system of a reduction gear according to claim 1, characterized in that: the motor is provided with a thermistor.
3. An electric control system of a reduction gear according to claim 2, characterized in that: the speed reduction circuit further comprises a relay 3F1, a contact 3F1 and a relay 3K 1; one end of the relay 3F1 is connected with a thermistor of the motor; the other end of the relay 3F1 is connected with a second power supply; contact 3F1 is connected to relay 3K 1; the control circuit also comprises a contact 3K1.1 and a contact 3K 1.2; contact 3K1.1 is connected between contact 3K5.2 and contact 3K 2.3; contact 3K1.2 is connected between contact 3K7.3 and contact 3K 3.3.
4. An electric control system of a reduction gear according to claim 1, characterized in that: the control circuit also comprises a contact 3KM1.3, a contact 3KM2.3 and an acousto-optic indication module; the acousto-optic indication module comprises an illuminating lamp EL 5; the contact 3KM1.3 is connected with a lighting lamp EL5, and the contact 3KM2.3 is connected with the contact 3KM1.3 in parallel.
5. An electric control system of a reduction gear according to claim 4, characterized in that: the acousto-optic indication module further comprises a horn HA2, and the horn HA2 is connected with the illuminating lamp EL5 in parallel.
6. An electric control system of a reduction gear according to claim 1, characterized in that: contact 3KM1.1 interlocks with contact 3KM 2.1; contact 3KM3.1 interlocks with contact 3KM 4.1.
7. An electric control system of a reduction gear according to claim 1, characterized in that: the brake circuit is also included; the brake circuit comprises a contact 3KM3.2, a contact 3KM4.2 and a normally closed brake; one end of the contact 3KM4.2 is connected with a first power supply; the normally closed brake is connected with a contact 3KM 4.2; one end of the contact 3KM3.2 is connected with a first power supply; the other end of contact 3KM3.2 is connected to the other end of contact 3KM 4.2.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122742637.6U CN217051358U (en) | 2021-11-10 | 2021-11-10 | Electric control system of speed reducer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122742637.6U CN217051358U (en) | 2021-11-10 | 2021-11-10 | Electric control system of speed reducer |
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| Publication Number | Publication Date |
|---|---|
| CN217051358U true CN217051358U (en) | 2022-07-26 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202122742637.6U Active CN217051358U (en) | 2021-11-10 | 2021-11-10 | Electric control system of speed reducer |
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| Country | Link |
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| CN (1) | CN217051358U (en) |
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- 2021-11-10 CN CN202122742637.6U patent/CN217051358U/en active Active
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