Control system for manually operating lifting of sliding plate

Abstract

The utility model relates to a control system for manually operating lifting of a sliding plate. The control system comprises a motor, a motor brake, a forward rotation power supply loop, a reverse rotation power supply loop, a forward and reverse rotation selection loop and a rectifier. One end of the forward power supply loop is connected with a three-phase power supply, and the other end of the forward power supply loop is connected with alternating current input ends of the motor and the rectifier; one end of the reverse power supply loop is connected with the three-phase power supply, and the other end is connected with the motor and the alternating current input end of the rectifier; the direct current output of the rectifier is connected with the motor brake; the rectifier is used for rectifying alternating current of the forward power supply loop or the reverse power supply loop into direct current and supplying power to the motor brake; the positive and negative rotation selection loop is connected with a three-phase power supply. When the master control system needs to be maintained and cannot supply power to the brake device, the motor brake can be manually opened, so that the sliding plate lifting platform is controlled to lift.

Description

Technical Field

[0001] The utility model belongs to the technical field of conveyors, in particular to a control system for manually operating the lifting of a slide plate. Background Art

[0002] At present, many automobile production conveyor lines use sliding contact line electric lifting slides, so that different models of cars can be lifted to different heights at each workstation as required, improving the flexibility of the automobile production line.

[0003] Usually, the skateboard is equipped with a controller, which controls the lifting platform motor on the skateboard to lift and lower. The motor is equipped with a brake device, and the controller also controls the power supply of the brake device. When the controller connects to the coil of the brake device, the brake device releases the motor and the motor rotates. When the controller disconnects the coil of the brake device, the brake device holds the motor tightly and the motor cannot rotate. The brake device is to prevent the skateboard lift from falling due to gravity when the motor is powered off.

[0004] However, when the controller fails and cannot supply power to the braking device, the braking device will hold the motor tightly. Since the coil of the braking device cannot be directly controlled by an AC voltage of 220VAC or 380VAC, if the lifting platform still needs to be raised or lowered at this time, the braking device of the motor can only be removed or loosened, and then mechanical equipment such as a hoist can be used to hook or support the table top of the lifting platform for lifting, which is quite time-consuming and labor-intensive. Summary of the invention

[0005] Therefore, the utility model provides a control system for manually operating the lifting of a slide plate to solve the technical problems existing in the prior art.

[0006] The technical solution of the utility model is as follows: a control system for manually operating a sliding plate lifting, comprising: a motor, a motor brake, a forward power supply circuit, a reverse power supply circuit, a forward and reverse selection circuit and a rectifier;

[0007] One end of the forward power supply circuit is connected to a three-phase power supply, and the other end of the forward power supply circuit is connected to the AC input end of the motor and the rectifier, and the forward power supply circuit is used to supply forward power to the motor;

[0008] One end of the reversing power supply circuit is connected to a three-phase power supply, and the other end of the reversing power supply circuit is connected to the AC input end of the motor and the rectifier, and the reversing power supply circuit is used to provide reverse power supply to the motor;

[0009] The DC power output of the rectifier is connected to the motor brake, and the rectifier is used to rectify the AC power of the forward power supply circuit or the reverse power supply circuit into DC power and supply power to the motor brake;

[0010] The forward and reverse selection circuit is connected to a three-phase power supply, and the forward and reverse selection circuit is used to control the conduction of the forward power supply circuit or the reverse power supply circuit.

[0011] Furthermore, the forward power supply circuit includes a forward contactor, one end of the normally open contact of the forward contactor is connected to a three-phase power supply, the other end of the normally open contact of the forward contactor is connected to an AC input end of a motor and a rectifier, and the forward and reverse selection circuit is connected to a coil of the forward contactor;

[0012] The reversing power supply circuit includes a reversing contactor, one end of the normally open contact of the reversing contactor is connected to a three-phase power supply, the other end of the normally open contact of the reversing contactor is connected to the AC input end of the motor and the rectifier, and the forward and reverse selection circuit is connected to the coil of the reversing contactor.

[0013] Furthermore, the forward and reverse rotation selection circuit includes a selection knob, one end of one of the contacts of the selection knob is connected to the power supply line of the three-phase power supply, and the other end is connected in sequence to the normally closed contact of the reverse contactor and the coil of the forward contactor;

[0014] One end of the other contact of the selection knob is connected to the power supply line of the three-phase power supply, and the other end is connected in sequence to the normally closed contact of the forward contactor and the coil of the reverse contactor.

[0015] Furthermore, a circuit breaker is provided on the power supply line of the three-phase power supply.

[0016] Furthermore, the motor brake includes: a spline sleeve, a brake disc, a pressure plate, a moving iron core, an electromagnetic coil and a brake spring, the spline sleeve is sleeved on the motor shaft of the motor, the brake disc is connected to the spline sleeve, the electromagnetic coil is sleeved on the moving iron core, the moving iron core is connected to the pressure plate, and the brake spring is arranged between the pressure plate and the electromagnetic coil.

[0017] The beneficial effects of the utility model are as follows: on the basis of the motor forward and reverse electric control circuit, the utility model adds a brake device opening circuit. When the overall control system needs maintenance and cannot supply power to the brake device, the motor brake can be manually opened to control the skateboard lifting platform to rise and fall. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is an electrical diagram of the present utility model.

[0019] Figure 2 It is a structural diagram of the braking device of the utility model. DETAILED DESCRIPTION

[0020] In order to enable those skilled in the art to better understand the solution of the utility model, the technical solution in the embodiment of the utility model will be clearly and completely described below in conjunction with the drawings in the embodiment of the utility model. The described embodiment is only a part of the embodiment of the utility model, not all of the embodiments. Based on the embodiment of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work should fall within the scope of protection of the utility model.

[0021] In an embodiment of the present utility model, Figure 1 It is an electrical diagram provided based on the specific connection of the control system for manually operated sliding plate lifting, such as Figure 1 As shown, the utility model specifically includes: a motor 22, a motor brake 23, a forward power supply circuit, a reverse power supply circuit, a forward and reverse selection circuit and a rectifier 21.

[0022] The motor brake 23 is installed on the motor 22 to clamp the output shaft of the motor 22 to fix the lifting position.

[0023] One end of the forward power supply circuit is connected to a three-phase power supply, and the other end of the forward power supply circuit is connected to the motor 22 and the AC input end of the rectifier 21. The forward power supply circuit is used to supply forward power to the motor 22. When the forward power supply circuit is turned on, the three-phase power supply supplies forward power to the motor 22, and the motor 22 rotates forward.

[0024] One end of the reversing power supply circuit is connected to a three-phase power supply, and the other end of the reversing power supply circuit is connected to the motor 22 and the AC input end of the rectifier 21. The reversing power supply circuit is used to provide reverse power to the motor 22. When the reversing power supply circuit is turned on, the three-phase power supply provides reverse power to the motor 22, and the motor 22 rotates forward. The specific wiring method for the forward and reverse rotation of the motor 22 is well known to those skilled in the art and will not be described here.

[0025] The DC power output of the rectifier 21 is connected to the motor brake 23 . The rectifier 21 is used to rectify the AC power of the forward power supply circuit or the reverse power supply circuit into DC power and supply power to the motor brake 23 .

[0026] The forward and reverse selection circuit is connected to a three-phase power supply, and the forward and reverse selection circuit is used to control the conduction of the forward power supply circuit or the reverse power supply circuit.

[0027] Among them, the power supply circuit includes a forward contactor 18, one end of the normally open contact of the forward contactor 18 is connected to a three-phase power supply, the other end of the normally open contact of the forward contactor 18 is connected to the AC input end of the motor 22 and the rectifier 21, and the forward and reverse selection circuit is connected to the coil of the forward contactor 18.

[0028] The reversing power supply circuit includes a reversing contactor 19, one end of the normally open contact of the reversing contactor 19 is connected to a three-phase power supply, and the other end of the normally open contact of the reversing contactor 19 is connected to the AC power input end of the motor 22 and the rectifier 21. The forward and reverse selection circuit is connected to the coil of the reversing contactor 19, and the coil output end is then connected to the three-phase power supply to form a loop.

[0029] The forward and reverse selection circuit includes a selection knob 20, one end of one of the contacts of the selection knob 20 is connected to the power supply line of the three-phase power supply, and the other end is connected in sequence to the normally closed contact of the reverse contactor 19 and the coil of the forward contactor 18. One end of another contact of the selection knob 20 is connected to the power supply line of the three-phase power supply, and the other end is connected in sequence to the normally closed contact of the forward contactor 18 and the coil of the reverse contactor 19. The coil outlet is then connected to the three-phase power supply to form a circuit.

[0030] The forward contactor 18 is used to make the motor 22 rotate forward. When the forward contactor 18 is turned on, the rectifier 21 also obtains a single-phase 380VAC power supply, and the rectifier 21 converts the AC power into DC power to supply power to the motor brake 23. After the motor brake 23 is energized, the output shaft of the motor 22 is released, and the lifting platform can be raised.

[0031] The reversing contactor 19 is used to reverse the motor 22. When the reversing contactor 19 is turned on, the rectifier 21 also obtains a single-phase 380VAC power supply, and the rectifier 21 converts the AC power into DC power to supply power to the motor brake 23. After the motor brake 23 is energized, the output shaft of the motor 22 is released, and the lifting platform can be lowered.

[0032] The selection knob 20 is used to manually operate the on and off of the contactor. If a two-speed knob is used, when the knob is on the left side, the coil of the forward contactor 18 is energized, and the normally open contact of the forward contactor 18 is closed, and the motor 22 rotates forward. When the knob is on the right side, the coil of the reverse contactor 19 is energized, and the normally open contact of the reverse contactor 19 is closed, and the motor 22 rotates reversely.

[0033] When the reverse contactor 19 or the forward contactor 18 is turned on, the rectifier 21 is energized to convert the single-phase 380VAC voltage into the voltage required by the brake coil, thereby opening the motor brake 23.

[0034] In one embodiment of the present invention, a circuit breaker 17 is provided on the power supply line of the three-phase power supply. The circuit breaker 17 is used to protect the circuit and cut off the 380VAC power supply when a short circuit occurs.

[0035] In one embodiment of the present invention, Figure 2As shown, the motor brake 23 includes: a spline sleeve 2, a brake disc 3, a pressure plate 5, a moving iron core 7, an electromagnetic coil 8 and a brake spring 6, the spline sleeve 2 is sleeved on the motor shaft 1 of the motor 22, the brake disc 3 is connected to the spline sleeve 2, the electromagnetic coil 8 is sleeved on the moving iron core 7, the moving iron core 7 is connected to the pressure plate 5, the brake spring 6 is arranged between the pressure plate 5 and the electromagnetic coil 8, and a rear shell 4 is arranged on the end of the brake disc 3 away from the pressure plate.

[0036] After the motor brake 23 is energized, the electromagnetic coil 8 is energized, causing the moving iron core 7 to move to the right, thereby separating the brake disc 3 and the pressure disc 5, and the output shaft of the motor 22 is released from the alarm state. At this time, the brake spring 6 is in a compressed state. When the electromagnetic coil 8 loses power, the brake spring 6 recovers under the action of elasticity, squeezing the brake disc 3 and the pressure disc 5, thereby achieving the clamping of the output shaft of the motor 22.

[0037] Finally, it should be noted that the above specific implementation methods are only used to illustrate the technical solution of the utility model rather than to limit it. Although the utility model has been described in detail with reference to examples, ordinary technicians in the field should understand that the technical solution of the utility model can be modified or replaced by equivalents without departing from the spirit and scope of the technical solution of the utility model, which should be included in the scope of the claims of the utility model.

Claims

1. A control system for manually operating a sliding plate, characterized in that: include: A motor (22), a motor brake (23), a forward power supply circuit, a reverse power supply circuit, a forward and reverse selection circuit, and a rectifier (21); One end of the forward power supply circuit is connected to a three-phase power supply, and the other end of the forward power supply circuit is connected to the motor (22) and the AC power input end of the rectifier (21), and the forward power supply circuit is used to supply forward power to the motor (22); One end of the reversing power supply circuit is connected to a three-phase power supply, and the other end of the reversing power supply circuit is connected to the motor (22) and the AC power input end of the rectifier (21), and the reversing power supply circuit is used to provide reverse power supply to the motor (22); The direct current output of the rectifier (21) is connected to the motor brake (23), and the rectifier (21) is used to rectify the alternating current of the forward power supply circuit or the reverse power supply circuit into direct current and supply power to the motor brake (23); The forward and reverse selection circuit is connected to a three-phase power supply, and the forward and reverse selection circuit is used to control the conduction of the forward power supply circuit or the reverse power supply circuit.

2. The control system for manually operated sliding plate lifting as claimed in claim 1, characterized in that: The forward power supply circuit comprises a forward contactor (18), one end of a normally open contact of the forward contactor (18) is connected to a three-phase power supply, the other end of the normally open contact of the forward contactor (18) is connected to an AC input end of a motor (22) and a rectifier (21), and the forward / reverse rotation selection circuit is connected to a coil of the forward contactor (18); The reversing power supply circuit comprises a reversing contactor (19), one end of a normally open contact of the reversing contactor (19) is connected to a three-phase power supply, the other end of the normally open contact of the reversing contactor (19) is connected to an AC power input end of a motor (22) and a rectifier (21), and the forward and reverse selection circuit is connected to a coil of the reversing contactor (19).

3. The control system for manually operated sliding plate lifting as claimed in claim 2, characterized in that: The forward / reverse rotation selection circuit comprises a selection knob (20), one end of one of the contacts of the selection knob (20) being connected to a power supply line of a three-phase power supply, and the other end being connected in sequence to a normally closed contact of a reverse rotation contactor (19) and a coil of a forward rotation contactor (18); One end of the other contact of the selection knob (20) is connected to the power supply line of the three-phase power supply, and the other end is connected in sequence to the normally closed contact of the forward contactor (18) and the coil of the reverse contactor (19).

4. The control system for manually operated sliding plate lifting as claimed in claim 1, characterized in that: A circuit breaker (17) is provided on the power supply line of the three-phase power supply.

5. The control system for manually operated sliding plate lifting as claimed in claim 1, characterized in that: The motor brake (23) comprises: a spline sleeve (2), a brake disc (3), a pressure disc (5), a moving iron core (7), an electromagnetic coil (8) and a brake spring (6), wherein the spline sleeve (2) is sleeved on the motor shaft (1) of the motor (22), the brake disc (3) is connected to the spline sleeve (2), the electromagnetic coil (8) is sleeved on the moving iron core (7), the moving iron core (7) is connected to the pressure disc (5), and the brake spring (6) is arranged between the pressure disc (5) and the electromagnetic coil (8).

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