Servo driving system applied to traction machine

Abstract

The utility model discloses a servo driving system applied to a traction machine, which comprises a servo motor and a servo driver for controlling and driving the servo motor, the servo driver is connected with an encoder of the servo motor, a voltage signal generator is mounted on the servo driver, the voltage signal generator is connected with a control console, and the control console is connected with the servo motor. And a servo enabling switch is mounted on the servo driver. The problem that after the technology of imported equipment is upgraded, a new device cannot be directly replaced with an old device or the technology is not compatible with the old device is solved. The problem of updating of old equipment is solved at a lower cost, the updated production system and production condition are stable, the service life of the equipment is further prolonged, the subsequent maintenance cost is reduced, the problem of signal compatibility of the old equipment and new equipment is solved, the operation and control after transformation are completely consistent with those before transformation, and the conventional production process and control are not influenced. The safety maintenance is influenced, and the production efficiency is not influenced.

Description

Technical Field

[0001] The utility model relates to the technical field of profile production control, in particular to a servo drive system applied to a traction machine. Background Art

[0002] Currently, much of the equipment in China is imported, or even an entire production line. After years of operation, the equipment performs well overall, ensuring the quality and efficiency of profile production. However, maintenance is needed to extend the lifespan of these devices, particularly key electronic devices like servo drives. Due to the limited lifespan of these components, the failure rate of these drives is increasing, making repairs extremely difficult. Due to the encryption protection of the equipment, even soft faults in the drives are difficult to diagnose and troubleshoot using debugging software.

[0003] In addition, the equipment has been in service for a long time, and it is difficult to purchase imported original parts for the original servo drives on the traction equipment on the production line. After the drive fails, the equipment is paralyzed. The current main method is to uniformly replace the hardware and software equipment of the servo drive system. This method is difficult to repair and has high maintenance costs. Complex debugging affects production progress. For this reason, we proposed a servo drive system for traction machines to solve the above problems. Utility Model Content

[0004] The present application provides a servo drive system for a traction machine, which solves the problem that some components of old equipment have reached the end of their service life and cannot be upgraded or replaced.

[0005] The present application provides a servo drive system for a traction machine, comprising a servo motor, a servo driver for controlling and driving the servo motor, the servo driver being connected to an encoder of the servo motor, a voltage signal generator being installed on the servo driver, the voltage signal generator being connected to a control console, and a servo enable switch being installed on the servo driver.

[0006] Preferably, the input signal of the voltage signal generator is a speed regulating switch.

[0007] Preferably, the speed regulating switch is a normally open relay.

[0008] Preferably, it further comprises a group of slave servo drive and slave servo motor, wherein the servo drive and the slave servo drive are connected via a synchronization signal.

[0009] Preferably, a speed monitoring meter is installed on the driven servo driver.

[0010] Preferably, the analog output of the voltage signal generator is 0-10V.

[0011] As can be seen from the above technical solution, the present application provides a servo drive system for a traction machine. When in use, the present application first obtains key parameters of the servo motor, such as the rated torque, pole pair number, phase sequence measurement, moment of inertia, stator line resistance, stator line inductance, motor back electromotive force, motor maximum current, motor maximum speed, motor maximum torque, encoder resolution, and initial angle. According to the relevant parameter values, the servo driver is adjusted so that the output signal of the servo driver is consistent with the parameter range of the servo motor in the original equipment. Then, the servo driver is connected to the voltage signal generator and connected through the test software, that is, the console of the original system. The console in the original system is set to debugging mode. According to the control signal that the servo driver can recognize, the output signal of the voltage signal generator is set, and the input signal of the voltage signal generator is set according to the output signal of the console. The signal emitted by the console is converted by the voltage signal generator into a signal that can be recognized by the servo driver. Then, the servo driver drives the servo motor according to the set parameters, thereby achieving "bridging" of the original servo motor and the control system without changing the original production system and equipment. The operation and control are completely consistent with those before the modification, ensuring the normal operation of the original system.

[0012] Compared with the prior art, the beneficial effects of the present invention are:

[0013] 1. This application solves the problem of imported equipment not being able to directly replace old equipment or being incompatible with the old equipment due to technological upgrades. This solves the problem of replacing old equipment at a lower cost. The updated production system has stable production conditions, further extending the service life of the equipment and reducing subsequent maintenance costs.

[0014] 2. This application achieves zero damage to the original equipment control circuit by improving the control circuit. No changes are made to the original control circuit diagram, thus maintaining the integrity of the original technical data;

[0015] 3. This application solves the signal compatibility problem between old equipment and new equipment by improving the circuit, and the operation and control after the transformation are completely consistent with those before the transformation. It will not cause any impact on the existing production process, safety maintenance, or production efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] In order to more clearly illustrate the technical solution of this application, the following is a brief introduction to the drawings required for the implementation cases. Obviously, for ordinary technicians in this field, other drawings can be obtained based on these drawings without any creative work.

[0017] Figure 1 This is a circuit connection diagram of a servo drive system applied to a traction machine proposed in the utility model;

[0018] Figure 2 This is a control system connection diagram of a servo drive system applied to a traction machine proposed in the utility model;

[0019] In the figure: 1 voltage signal generator, 2 control console, 3 servo driver, 4 servo motor, 41 encoder, 5 speed monitoring meter, 6 servo enable switch, 7 speed control switch. DETAILED DESCRIPTION

[0020] In order to enable people skilled in the art to better understand the technical solutions in the present application, the technical solutions in the embodiments of the present application will be clearly and completely described below in conjunction with the accompanying drawings.

[0021] See also Figure 1-2 A servo drive system for a traction machine solves the problem that after the old equipment is technologically upgraded, the new device cannot be directly replaced with the old device or the technology is incompatible. The problem of updating the old equipment is achieved without changing the system. Specifically, it includes a servo motor 4. The servo motor 4 is the servo motor of the original equipment. Since the service life of the original servo motor is longer than the original controller, the production system is paralyzed due to the failure of the controller after years of operation. The controller needs to be replaced or repaired. For imported equipment, due to the encryption setting of the original controller, it is difficult to repair the controller. Due to time reasons, it is also difficult to obtain the original controller for replacement, which increases the difficulty and cost of maintenance. The equipment design of this application includes a servo driver 3 that drives the servo motor 4. The servo driver 3 is a servo driver 3 that is currently easily available on the market. The selection needs to be made according to the control parameters and control parameter range of the original servo motor 4, so that after adjustment, it can obtain and output the parameters of the servo motor 4, thereby facilitating the definition of the control interface function after adjustment. The servo driver 3 is connected to the encoder 41 of the servo motor 4, and the parameters of the servo motor 4 during operation are obtained through the encoder 41;

[0022] A voltage signal generator 1 is installed on the servo driver 3. In this application, the input signal is a switch quantity, that is, the increase or decrease of the signal outside the room is adjusted by increasing or decreasing the switch quantity; at the same time, the output signal is a 0-10V analog signal, and its continuous signal value is adjusted without disturbance by increasing or decreasing the switch quantity. When in use, the input signal of the voltage signal generator 1 is the speed control switch 7, which corresponds to the increase or decrease button of the original servo motor 4. Specifically, the speed control switch 7 is a normally open relay, and the switch quantity adjustment is realized by two normally open contacts of the relay, that is, the adjustment of the speed increase and deceleration; the output signal of the voltage signal generator 1 must be consistent with the speed control signal of the domestic servo driver, that is, the 0-10V analog output function. At this point, the button speed control function of the original device is bridged to the analog control function of the servo driver. In the field control, this application uses the control switch of the original device as the adjustment contact for increasing or decreasing the signal of the voltage signal generator 1 to complete the speed control. The voltage signal generator 1 is connected to the console 2. This application can also be controlled through the console 2. A servo enable switch 6 is installed on the servo driver 3. The servo enable switch 6 is a relay. The start and stop of the equipment is controlled by the relay, which serves as the enable signal point of the servo driver 3.

[0023] In the present invention, when a crawler-type traction machine is selected, it also includes a set of driven servo drivers and driven servo motors, that is, the upper and lower crawlers are driven by the servo motor 4 and the driven servo motor respectively, and the servo driver 3 and the driven servo driver are connected by a synchronization signal, so that the two servo motors 4 operate synchronously;

[0024] Furthermore, a speed monitoring meter 5 is installed on the driven servo driver, which can monitor the speed of the driven servo driver and compare the speed signal of the servo motor 4 collected by the servo driver 3 to control the running speed of the two crawlers to be the same.

[0025] It can be seen from the above technical solution that when the present application is used, the rated torque, pole pair number, phase sequence measurement, moment of inertia, stator line resistance, stator line inductance, motor back electromotive force, motor maximum current, motor maximum speed, motor maximum torque, encoder resolution, initial angle and other key parameters of the servo motor 4 are first obtained, and the servo driver 3 is adjusted according to the relevant parameter values ​​so that the output signal of the servo driver 3 is consistent with the parameter range of the servo motor 4 in the original equipment. Then, the servo driver 3 is connected to the voltage signal generator 1, and connected through the test software, that is, the console 2 of the original system. The console 2 in the original system is set to debugging mode. According to the control signal that the servo driver 3 can recognize, the output signal of the voltage signal generator 1 is set, and the input signal of the voltage signal generator 1 is set according to the output signal of the console 2, so that the signal emitted by the console 2 is converted by the voltage signal generator 1 into a signal that can be recognized by the servo driver 3. Then, the servo driver 3 drives the servo motor 4 according to the set parameters, thereby realizing the bridging of the original servo motor 4 and the control system without changing the original production system and equipment. The operation and control are completely consistent with those before the transformation, thereby ensuring the normal operation of the original system.

[0026] Those skilled in the art will readily appreciate other embodiments of the present application after considering the specification and practicing the application disclosed herein. This application is intended to cover any variations, uses, or adaptations of the present application that follow the general principles of this application and include common knowledge or customary techniques in the art not disclosed herein. The description and examples are to be considered merely as exemplary, and the true scope of this application is indicated by the claims.

[0027] It should be understood that the present application is not limited to the precise structure described above and shown in the drawings, and various modifications and changes can be made without departing from the scope thereof. The above-described embodiments of the present application do not constitute a limitation on the scope of protection of the present application.

Claims

1. A servo drive system for a traction machine, characterized in that: The invention comprises a servo motor (4), a servo driver (3) for controlling and driving the servo motor (4), the servo driver (3) being connected to an encoder (41) of the servo motor (4), a voltage signal generator (1) being installed on the servo driver (3), the voltage signal generator (1) being connected to a control console (2), and a servo enabling switch (6) being installed on the servo driver (3).

2. The servo drive system for a traction machine according to claim 1, characterized in that: The input signal of the voltage signal generator (1) is a speed regulating switch (7).

3. The servo drive system for a traction machine according to claim 2, characterized in that: The speed regulating switch (7) is a normally open relay.

4. The servo drive system for a traction machine according to claim 1, characterized in that: It also includes a group of slave servo drivers and slave servo motors, wherein the servo driver (3) and the slave servo driver are connected via a synchronization signal.

5. The servo drive system for a traction machine according to claim 4, characterized in that: A speed monitoring meter (5) is installed on the driven servo driver.

6. The servo drive system for a traction machine according to claim 1, characterized in that: The analog output of the voltage signal generator (1) is 0-10V.

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