Automatic drilling control circuit system for transformer support
By designing an automatic drilling control circuit system, the automation and consistency of transformer bracket drilling is achieved, the problem of inconsistency in drilling under traditional manual control is solved, and the production efficiency and equipment safety are improved.
Patent Information
- Application Number
- CN202521066745.8
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-05-28
- Publication Date
- 2025-07-04
- Estimated Expiration
- 2035-05-28
AI Technical Summary
The existing transformer bracket drilling system relies on manual control, resulting in inconsistent drilling depth and position, making it difficult to ensure the quality of the hole position, and the drill bit downward movement speed is difficult to accurately control, making it easy to damage the equipment.
An automatic drilling control circuit system for transformer brackets is designed, including a motor control circuit that moves up and down the drill bit, a motor control circuit that rotates the drill bit and a sequential control circuit. Through the cooperation of relays and time relays, automatic control of drill bit downward movement, rotation and reset is achieved, ensuring the consistency of drilling depth and position.
The automation and consistency of the drilling process is achieved, production efficiency is improved, manual operation strength is reduced, drilling quality and equipment safety are ensured, and transformer bracket needs of different specifications and materials.
Smart Images
Figure CN223065677U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to transformer manufacturing equipment, in particular to an automatic drilling control circuit system for a transformer bracket, which is applied to the production process of the bottom bracket of a transformer in the fields of industrial automation and power equipment manufacturing. Background Technique
[0002] A transformer is an essential key device in the power system, and the quality and precision of its bracket structure directly affect the stability and service life of the transformer. Holes need to be drilled for the connection between the bottom base of the transformer and the windings of the transformer, etc. The precision and consistency of these hole positions are crucial for the installation and use of the transformer. Traditional drilling of transformer brackets usually adopts manual or semi-automatic operation methods. Operators need to manually control processes such as the downward movement, upward movement, and rotation of the drill bit. Not only is the work efficiency low, but also the quality of the hole positions is unstable due to human factors.
[0003] The existing transformer bracket drilling systems have the following problems: The operation process depends on manual control, and it is impossible to ensure that the depth and position of each drilled hole are exactly the same, resulting in large differences between product batches; moreover, it is difficult to precisely control the downward movement speed of the drill bit during the drilling process, which easily leads to poor drilling quality or drill bit damage. Therefore, it has important practical value to develop an automatic drilling control circuit system for transformer brackets that can automatically control the entire drilling process, ensure the consistency of drilling quality, and improve production efficiency. Content of the Utility Model
[0004] The purpose of the utility model is to provide an automatic drilling control circuit system for a transformer bracket, which can automatically control the working processes such as the downward movement of the drill bit, the rotation of the drill bit, and the reset of the drill bit, ensure the consistency and reliability of the drilling process of the transformer bracket, improve production efficiency, and reduce the intensity of manual operation.
[0005] The above technical purpose of the utility model is achieved through the following technical solutions:
[0006] An automatic drilling control circuit system for a transformer bracket includes: three-phase power supplies L1, L2, L3 and a neutral line N, and the three-phase power supply is connected to the system through a main circuit breaker QF; the system includes: a control circuit for the drill bit up and down movement motor, a control circuit for the drill bit rotation motor, and a sequence control circuit; wherein, the control circuit for the drill bit up and down movement motor includes a contactor KM1, a contactor KM2, a thermal relay FR1, and a drill bit up and down movement motor M1; the control circuit for the drill bit rotation motor includes a contactor KM3, a thermal relay FR2, and a drill bit rotation motor M2; the sequence control circuit includes a start control unit, a drill bit downward movement control unit, and a drill bit upward movement and reset unit; the drill bit downward movement control unit is used to control the downward movement of the drill bit to drill holes in the transformer bracket; the drill bit upward movement and reset unit is used to control the upward movement and reset of the drill bit.
[0007] The present utility model is further configured as follows: The start control unit includes: a push-button switch SB2 and a relay KA1; the push-button switch SB2 is connected to the coil circuit of the relay KA1; the normally open contact 3-4 of the relay KA1 is connected in series with the coil circuit of the relay KA1 to form a self-locking loop, so that after the push-button switch SB2 is pressed, even if the button is released, the system can still continue to operate.
[0008] The present utility model is further configured as follows: The drill bit downward movement control unit includes: a relay KA1, a thermal relay FR1, a time relay KT1, a contactor KM1, and a contactor KM3; the normally open contact 5-6 of the relay KA1 is connected to the coil circuit of the contactor KM1; the normally open contact 19-20 of the relay KA1 is connected to the coil circuit of the contactor KM3; the main contacts of the contactor KM1 are connected to the drill bit up-and-down movement motor M1 for driving the drill bit to move downward; the main contacts of the contactor KM3 are connected to the drill bit rotation motor M2 for driving the drill bit to rotate.
[0009] The present utility model is further configured as follows: In the drill bit downward movement control unit, the coil of the time relay KT1 is connected in series with the relay KA1. After the relay KA1 is powered on, the time relay KT1 starts timing; the time relay KT1 is used to control the time and depth of the drill bit moving downward.
[0010] The present utility model is further configured as follows: The drill bit upward movement and reset unit includes: a relay KA1, a thermal relay FR1, a time relay KT1, a time relay KT2, and a contactor KM2; the normally open contact 15-16 of the time relay KT1 is connected in series with the coil circuit of the contactor KM2; the normally open contact 17-18 of the time relay KT1 is connected in series with the coil circuit of the time relay KT2; the main contacts of the contactor KM2 are reversely connected to the drill bit up-and-down movement motor M1 for driving the drill bit to move upward and reset.
[0011] The present utility model is further configured as follows: The time relay KT2 is used to control the time of the drill bit moving upward and resetting to ensure that the drill bit is completely reset; the normally closed contact 23-24 of the time relay KT2 is connected in series with the coil circuit of the relay KA1 to disconnect the circuit after the drill bit reset is completed and reset the system.
[0012] The present utility model is further configured as follows: The system further includes a protection unit; the protection unit includes a thermal relay FR1 and a thermal relay FR2, which are respectively used to monitor the working current of the drill bit up-and-down movement motor and the drill bit rotation motor and cut off the power supply in case of overload to protect the motor from damage.
[0013] The present utility model is further configured as follows: Both the drill bit up-and-down movement motor and the drill bit rotation motor are three-phase asynchronous motors, which are powered by three-phase power supplies L1, L2, and L3. The U1, V1, and W1 terminals of the motors are connected to the three-phase power supplies through the main contacts of thermal relays and contactors, and the motor housings are grounded through the PE terminals to ensure the safe operation of the equipment.
[0014] The present utility model is further configured as follows: The time relay KT1 is a power-on delay type relay. When its delay ends, its normally closed contacts 13-14 and 21-22 are disconnected, causing the contactors KM1 and KM3 to lose power and stop the downward movement and rotation of the drill bit; at the same time, its normally open contacts 15-16 and 17-18 are closed, starting the drill bit upward movement reset motor and the time relay KT2.
[0015] The present utility model is further configured as follows: The drill bit up-and-down movement motor M1 controls the rotation of the lead screw, driving the drill bit to move up and down; the drill bit rotation motor M2 directly drives the drill bit to rotate at high speed for drilling operations on the transformer support.
[0016] In summary, the present utility model has the following beneficial effects:
[0017] 1. Automatic control: The system realizes the full-automatic control of the downward movement, rotation, and reset of the drill bit through the sequential control loop. The operator only needs to press the start button SB2 to complete a complete working cycle, greatly reducing the manual operation intensity and improving the work efficiency and operation convenience.
[0018] 2. Consistent drilling quality: The system uses the time relay KT1 to accurately control the time and depth of the downward movement of the drill bit, ensuring that the depth of each drill hole is consistent, overcoming the problem that it is difficult to ensure consistency in manual operation, and improving the processing quality and accuracy of the transformer support.
[0019] 3. Reliable safety protection: The system integrates a perfect protection mechanism, including the thermal relays FR1 and FR2 for overload protection of the motors, and the time relay KT2 for controlling the automatic reset function of the system, effectively preventing equipment damage and safety accidents.
[0020] 4. Through the cooperation of the relay KA1 and the time relays KT1 and KT2, the system realizes the automatic connection of processes such as the downward movement of the drill bit, drilling, and the reset of the drill bit, avoiding the delay and instability in process switching in traditional manual control, and improving the production efficiency and the coherence of the process.
[0021] 5. By adjusting the delay parameters of the time relays KT1 and KT2, the system can flexibly adapt to the drilling requirements of transformer supports of different specifications and materials, enhancing the versatility and adaptability of the equipment. Description of the Drawings
[0022] Figure 1 This is the circuit schematic diagram of the automatic drilling control circuit system for the transformer support of the present utility model. Specific embodiments
[0023] Next, the technical solutions in the embodiments of the present utility model will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all the embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without making creative efforts belong to the scope of protection of the present utility model.
[0024] In the description of the present utility model, it should be understood that the orientation or positional relationship indicated by the terms center, longitudinal, transverse, length, width, thickness, upper, lower, front, rear, left, right, vertical, horizontal, top, bottom, inner, outer, clockwise, counterclockwise, etc. is based on the orientation or positional relationship shown in the accompanying drawings, and is only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of the present utility model.
[0025] As Figure 1 shown, the automatic drilling control circuit system for the transformer support provided by the present utility model includes three-phase power supplies L1, L2, and L3 and a neutral line N, which are connected to the system through the main circuit breaker QF. The system mainly consists of three parts: the control circuit for the drill bit up and down movement motor, the control circuit for the drill bit rotation motor, and the sequence control circuit.
[0026] The control circuit for the drill bit up and down movement motor includes a contactor KM1, a contactor KM2, a thermal relay FR1, and a drill bit up and down movement motor M1. The drill bit up and down movement motor M1 is a three-phase asynchronous motor that controls the rotation of the lead screw, thereby driving the drill bit to move up and down. The main contacts of the contactor KM1 or KM2 are connected to the three-phase power supply. The contactor KM1 controls the forward rotation to realize the downward movement of the drill bit; the contactor KM2 controls the reverse rotation to realize the upward movement and reset of the drill bit. The thermal relay FR1 is connected in series with the drill bit up and down movement motor to monitor the working current of the motor and automatically disconnect the circuit when the motor is overloaded to protect the motor from damage. The shell of the drill bit up and down movement motor is grounded through the PE terminal to ensure the safe operation of the equipment.
[0027] The control circuit of the drill rotation motor includes contactor KM3, thermal relay FR2, and drill rotation motor M2. The drill rotation motor M2 is also a three-phase asynchronous motor and is connected to the three-phase power supply through the main contacts of contactor KM3. The thermal relay FR2 is connected in series with the drill rotation motor for overload protection. The shell of the drill rotation motor is grounded through the PE terminal to ensure equipment safety. The main function of the drill rotation motor M2 is to drive the drill to rotate and perform drilling operations on the transformer support.
[0028] The sequence control circuit consists of a start control unit, a drill bit downward movement control unit, and a drill bit upward movement and reset unit.
[0029] The start control unit includes push-button switch SB2 and relay KA1. When the operator presses the push-button switch SB2 to start the system, the coil of relay KA1 is energized, and its normally open contacts 3-4 close, forming a self-locking circuit. When the button is released, relay KA1 remains energized to ensure the continuous operation of the system. Multiple normally open contacts of relay KA1 (5-6, 7-8, 9-10, 11-12, 19-20) close respectively. At the same time, since the normally closed contacts 13-14 of relay KA1 are in the closed state, the coil of time relay KT1 is energized.
[0030] The drill bit downward movement control unit includes relay KA1, time relay KT1, thermal relay FR1, and contactors KM1 and KM3. When the system starts, the normally open contacts 5-6 of relay KA1 close, the coil of contactor KM1 is energized, and its main contacts close. The drill bit up and down movement motor M1 starts to rotate forward, driving the drill bit downward. At the same time, the normally open contacts 19-20 of relay KA1 close, the coil of contactor KM3 is energized, and its main contacts close. The drill rotation motor M2 starts to work, driving the drill bit to rotate at high speed to drill the transformer support. The time relay KT1 starts timing to control the time of the drill bit's downward movement, that is, to control the drilling depth.
[0031] The drill bit upward movement and reset unit includes time relay KT1, time relay KT2, thermal relay FR1, and contactor KM2. When drilling is completed and the delay of time relay KT1 ends, its normally closed contacts 13-14 and 21-22 open, and the coils of contactors KM1 and KM3 lose power, and the drill bit stops moving downward and rotating. At the same time, the normally open contacts 15-16 and 17-18 of time relay KT1 close, and the coils of contactor KM2 and time relay KT2 are energized simultaneously. The main contacts of contactor KM2 close, and the drill bit up and down movement motor M1 starts to rotate in reverse, driving the drill bit upward to reset. The time relay KT2 starts timing to control the time of the drill bit's upward movement to ensure that the drill bit is fully reset.
[0032] When the drill bit reset is completed and the time delay of time relay KT2 ends, its normally closed contacts 23 - 24 open, the coil of relay KA1 loses power, and all control circuits return to the initial state, and the system completes a full drilling cycle. At this time, the operator needs to press the push button switch SB2 again to start a new drilling cycle.
[0033] The working process of the system is as follows:
[0034] 1. Preparation stage: The operator places the transformer support on the drill press workbench, confirms that the drill bit is aligned with the drilling position, then turns on the power supply and closes the main circuit breaker QF, and the system is in the standby state.
[0035] 2. Start-up stage: The operator presses the push button switch SB2, the relay KA1 is energized and self-locked, and the system enters the working state. At the same time, the time relay KT1 starts to be energized and count time.
[0036] 3. Drilling stage: The normally open contacts 5 - 6 and 19 - 20 of relay KA1 close, the coils of contactors KM1 and KM3 are energized, the drill bit up and down movement motor M1 starts to rotate forward, the drill bit rotation motor M2 starts to work, the drill bit moves down and rotates at high speed to drill the transformer support.
[0037] 4. Drilling completion stage: When the time delay of time relay KT1 ends, its normally closed contacts 13 - 14 and 21 - 22 open, the coils of contactors KM1 and KM3 lose power, the drill bit stops moving down and rotating, and the drilling is completed.
[0038] 5. Drill bit reset stage: The normally open contacts 15 - 16 and 17 - 18 of time relay KT1 close, the coils of contactor KM2 and time relay KT2 are energized, the drill bit up and down movement motor M1 starts to rotate in reverse, and the drill bit moves up to reset.
[0039] 6. Reset completion stage: When the time delay of time relay KT2 ends, its normally closed contacts 1 - 2 open, the coil of relay KA1 loses power, the system returns to the initial state, and a full drilling cycle is completed.
[0040] The time parameters of the time relays in the system are set as follows:
[0041] Time relay KT1: Its time delay determines the time for the drill bit to move down and rotate, that is, the drilling depth. It needs to be adjusted appropriately according to the material and thickness of the transformer support and the diameter requirement of the drilling to ensure that the drilling depth meets the requirements.
[0042] Time relay KT2: Its time delay determines the time for the drill bit to move up and reset, and it is necessary to ensure that the drill bit can be fully reset to prepare for the next drilling.
[0043] The delay parameter of the above time relay can be finely adjusted by turning the knob on the relay to meet the drilling requirements of transformer brackets with different specifications and materials, ensuring the best drilling effect.
[0044] The automatic drilling control circuit system of the transformer bracket of the present utility model adopts a relay logic control structure, and realizes the automatic control function through the conversion of contact states and the time delay of the time relay. It has the characteristics of simple structure, low failure rate and easy maintenance, and is especially suitable for small and medium-sized transformer bracket manufacturing enterprises. Compared with the traditional manual or semi-automatic drilling methods, the present utility model has the following advantages: First, the degree of automation is high, realizing the automatic control of the drill bit moving down, rotating and resetting, greatly improving the production efficiency; Second, the system uses a time relay to accurately control the drilling depth, ensuring the consistency and stability of the drilling quality.
[0045] The present utility model can be applied to the drilling processing of transformer brackets of various specifications. By adjusting the delay parameter of the time relay, it can meet the requirements of the drilling depth of transformer brackets with different specifications and materials.
[0046] The above is only the specific implementation manner of the present utility model, but the protection scope of the present utility model is not limited thereto. Any changes or substitutions that can be easily thought of by those skilled in the art within the technical scope disclosed by the present utility model should be covered by the protection scope of the present utility model. Therefore, the protection scope of the present utility model should be subject to the protection scope of the claims.
Claims
1. An automatic drilling control circuit system for a transformer support, characterized in that, Including: Three-phase power supplies L1, L2, L3 and neutral line N, and the three-phase power supplies are connected to the system through the main circuit breaker QF; the system includes: a control circuit for the drill bit up-and-down movement motor, a control circuit for the drill bit rotation motor, and a sequence control circuit; wherein, the control circuit for the drill bit up-and-down movement motor includes contactor KM1, contactor KM2, thermal relay FR1 and drill bit up-and-down movement motor M1; the control circuit for the drill bit rotation motor includes contactor KM3, thermal relay FR2 and drill bit rotation motor M2; the sequence control circuit includes a start control unit, a drill bit down movement control unit and a drill bit up movement and reset unit; the drill bit down movement control unit is used to control the drill bit to move down to drill holes in the transformer support; the drill bit up movement and reset unit is used to control the drill bit to move up and reset.
2. The automatic drilling control circuit system of the transformer bracket according to claim 1, characterized in that: The start control unit includes: push-button switch SB2, relay KA1; the push-button switch SB2 is connected to the coil circuit of the relay KA1; the normally open contacts 3-4 of the relay KA1 are connected in series with the coil circuit of the relay KA1 to form a self-locking loop, so that after the push-button switch SB2 is pressed, even if the button is released, the system can still run continuously.
3. The automatic drilling control circuit system of the transformer support according to claim 1, wherein: The drill bit down movement control unit includes: relay KA1, thermal relay FR1, time relay KT1, contactor KM1 and contactor KM3; the normally open contacts 5-6 of the relay KA1 are connected to the coil circuit of the contactor KM1; the normally open contacts 19-20 of the relay KA1 are connected to the coil circuit of the contactor KM3; the main contacts of the contactor KM1 are connected to the drill bit up-and-down movement motor M1 to drive the drill bit to move down; the main contacts of the contactor KM3 are connected to the drill bit rotation motor M2 to drive the drill bit to rotate.
4. The automatic drilling control circuit system of the transformer bracket according to claim 3, wherein: In the drill bit down movement control unit, the coil of the time relay KT1 is connected in series with the relay KA1. After the relay KA1 is powered on, the time relay KT1 starts timing; the time relay KT1 is used to control the time and depth of the drill bit moving down.
5. The automatic drilling control circuit system of the transformer support according to claim 1, wherein: The drill bit up movement and reset unit includes: relay KA1, thermal relay FR1, time relay KT1, time relay KT2 and contactor KM2; the normally open contacts 15-16 of the time relay KT1 are connected in series with the coil circuit of the contactor KM2; the normally open contacts 17-18 of the time relay KT1 are connected in series with the coil circuit of the time relay KT2; the main contacts of the contactor KM2 are reversely connected to the drill bit up-and-down movement motor M1 to drive the drill bit to move up and reset.
6. The automatic drilling control circuit system of the transformer bracket according to claim 1, wherein: Both the drill bit up-and-down movement motor and the drill bit rotation motor are three-phase asynchronous motors, powered by the three-phase power supplies L1, L2, L3. The U1, V1, W1 terminals of the motors are connected to the three-phase power supplies through the main contacts of the thermal relays and contactors, and the motor shells are grounded through the PE terminals to ensure the safe operation of the equipment.
7. The automatic drilling control circuit system of the transformer bracket according to claim 4, wherein: The time relay KT1 is a power-on delay type relay. When its delay ends, its normally closed contacts 13-14 and 21-22 are disconnected, causing the contactors KM1 and KM3 to lose power and stop the drill bit from moving downward and rotating. At the same time, its normally open contacts 15-16 and 17-18 are closed, starting the drill bit to move upward for reset and the time relay KT2.