CN109612750B - Worm gear elevator testing device and control method thereof - Google Patents
Worm gear elevator testing device and control method thereof Download PDFInfo
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- CN109612750B CN109612750B CN201811273883.8A CN201811273883A CN109612750B CN 109612750 B CN109612750 B CN 109612750B CN 201811273883 A CN201811273883 A CN 201811273883A CN 109612750 B CN109612750 B CN 109612750B
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01M—TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
- G01M99/00—Subject matter not provided for in other groups of this subclass
- G01M99/008—Subject matter not provided for in other groups of this subclass by doing functionality tests
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01D—MEASURING NOT SPECIALLY ADAPTED FOR A SPECIFIC VARIABLE; ARRANGEMENTS FOR MEASURING TWO OR MORE VARIABLES NOT COVERED IN A SINGLE OTHER SUBCLASS; TARIFF METERING APPARATUS; MEASURING OR TESTING NOT OTHERWISE PROVIDED FOR
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- G01D21/02—Measuring two or more variables by means not covered by a single other subclass
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Abstract
The invention discloses a worm gear elevator testing device, which comprises: the test platform is configured on the fixed worm gear lifter; a drive device comprising a first drive device and a second drive device; a first driving device for providing a driving force to a worm wheel of the worm gear elevator; the second driving device is used for providing a loading force for a lead screw of the worm gear elevator; the control mechanism is used for controlling the first driving device to output driving force, and the control mechanism is used for controlling the second driving device to output load force.
Description
Technical Field
The invention relates to the field of industrial automation testing, in particular to a worm and gear elevator testing device and a control method thereof.
Background
In order to test the performance of the worm gear lifter, the actual working condition needs to be simulated, and a service life test of multi-state control and long-time operation is carried out on a product. At present, a control device for testing an elevator has low automation degree and narrow application range. Firstly, the various load forces under the simulated working condition need to be manually adjusted. The second is that the testing speed is constant speed. Thirdly, the operator is required to monitor the test product for a long time. And fourthly, the device only carries one set of products for testing. Not only the operation is complicated, but also the manpower is greatly wasted.
Disclosure of Invention
The invention aims to overcome the defects of the existing equipment and provide a worm and gear elevator testing device which can be operated automatically by one key and in a foolproof manner, has wide application range, realizes the stepless regulation of output load and testing speed, can synchronously test a plurality of sets of elevator products and has the functions of temperature monitoring and pressure monitoring and a control method thereof.
The technical solution for realizing the purpose of the invention is as follows: a worm gear lift testing arrangement, its characterized in that includes: the test platform is configured on the fixed worm gear lifter; a drive device comprising a first drive device and a second drive device; a first driving device for providing a driving force to a worm wheel of the worm gear elevator; the second driving device is used for providing a loading force for a lead screw of the worm gear elevator; the control mechanism is used for controlling the first driving device to output driving force, and the control mechanism is used for controlling the second driving device to output load force.
Furthermore, the control mechanism comprises a plurality of first interfaces connected with the first driving device and used for receiving information of the first driving device; the control mechanism comprises a plurality of second interfaces connected with the second driving device.
Further, the first driving device comprises a stepping motor and a gear transmission device, and the stepping motor is connected with a worm wheel of the worm gear lifter through the gear transmission device; the second driving device comprises a hydraulic cylinder, an overflow valve, a reversing valve, a pump, a pressure sensor, a water cooler and a hydraulic pipeline, and a hydraulic rod of the hydraulic cylinder is connected with a lead screw of the worm gear lifter.
Further, the hydraulic control system comprises a first temperature sensor for sensing the temperature of the stepping motor, a second temperature sensor for sensing the temperature of the hydraulic oil and a pressure sensor for sensing the pressure of the hydraulic line oil way.
Furthermore, the control mechanism comprises an MCU controller and a PLC controller, wherein the MCU controller controls the stepping motor and provides the running speed for the worm gear lifter; the PLC is respectively and electrically connected with the pressure sensor, the first temperature sensor, the second temperature sensor, the overflow valve, the reversing valve and the pump.
Furthermore, the control mechanism also comprises a programmable touch screen, the programmable touch screen is connected with the MCU controller and the PLC controller, and sends instructions to the MCU controller and the PLC controller through the control of a human-computer interaction interface of the programmable touch screen.
In addition, the invention also provides a control method of the worm and gear elevator testing device, which comprises the worm and gear elevator testing device and further comprises the following steps:
presetting parameters, wherein the parameters comprise a first preset speed, a first preset stroke, a first preset time, a first preset load force, a first preset temperature rise speed, a first limit temperature, a second limit temperature, a hydraulic cylinder homing pressure value and a pressure limit value;
judging the off-line state of the analog quantity, alarming and waiting for confirmation operation if the analog quantity is off-line, controlling the hydraulic cylinder to complete the reset action of the hydraulic cylinder by the reset pressure value of the hydraulic cylinder if the analog quantity is on-line, closing the pump, confirming, sequentially completing the closing of an overflow valve and a reversing valve and confirming, and checking whether the current temperature of the stepping motor, the temperature of hydraulic oil and the pressure of an oil way of a hydraulic pipeline are within a preset range;
controlling a stepping motor to run at a first preset speed, and continuing to run for a first preset time after the stroke of the stepping motor reaches a first preset stroke;
controlling the stepping motor to operate at a first preset speed, controlling the hydraulic cylinder to output a first preset load force, and when the stroke of the stepping motor reaches a second preset stroke, pausing the operation of the hydraulic cylinder and continuing to operate the stepping motor for a second preset time;
controlling the stepping motor to operate at a second preset speed, controlling the hydraulic cylinder to output a second preset load force, and when the stroke of the stepping motor reaches a third preset stroke, pausing the operation of the hydraulic cylinder and continuing to operate the stepping motor for a third preset time;
controlling the stepping motor to run at a third preset speed, controlling the hydraulic cylinder to output a third preset load force, when the stroke of the stepping motor reaches a fourth preset stroke, continuing to run for a fourth preset time by the stepping motor, and then stopping the stepping motor and the hydraulic cylinder;
in the above steps, when the temperature of the hydraulic oil exceeds a first preset temperature or the temperature rise speed of the hydraulic oil exceeds a first preset temperature rise speed, the water cooler is opened; when the temperature of the hydraulic oil exceeds a first limit temperature, the worm and gear elevator testing device stops working; when the oil line pressure of the hydraulic pipeline exceeds a pressure limit value, the worm and gear elevator testing device stops working; and when the temperature of the stepping motor exceeds a second limit temperature value, the worm and gear elevator testing device stops working.
Further, the first preset speed > the second preset speed > the third preset speed, and the first preset load force < the second preset load force < the third preset load force.
Furthermore, the first preset stroke is equal to the second preset stroke, the third preset stroke is equal to the fourth preset stroke, and the first preset time is equal to the second preset time, the third preset time is equal to the fourth preset time.
The invention has the beneficial effects that:
1. the device has 2 manual/automatic operation modes, and can use the manual debugging man-machine dialogue interface of administrator's identity at the touch-sensitive screen to realize the stepless adjustment setting to the parameter.
2. The automatic test flow is operated in one key mode, and the streamlined management of product test is realized. And multiple sets of product tests can be carried out simultaneously, so that labor and time are saved.
3. And tracking and monitoring system parameters at any moment, automatically judging whether the system parameters reach a limit value, pre-judging the subsequent state, and finishing action processing under the condition of no response.
4. The control box adopts the detachable structure of assembling in four sides, saves installation space.
5. The connector group is adopted to be in butt joint with the hydraulic loading mechanism and the test platform, so that the universality is strong and the operation is simple.
6. Different types of controllers are adopted to process different parameters, so that fault reasons can be quickly searched, and troubleshooting time is shortened.
Additional features and advantages of the invention will be set forth in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention.
Drawings
The accompanying drawings, which are included to provide a further understanding of the invention and are incorporated in and constitute a part of this specification, illustrate embodiments of the invention and together with the description serve to explain the principles of the invention and not to limit the invention. In the drawings:
FIG. 1 shows a schematic structural diagram of a worm gear elevator testing apparatus;
FIG. 2 shows another schematic of a worm gear elevator test setup;
fig. 3 shows a flow chart of a control method of a worm gear elevator test device.
Detailed Description
The preferred embodiments of the present invention will be described in conjunction with the accompanying drawings, and it will be understood that they are described herein for the purpose of illustration and explanation and not limitation.
As shown in fig. 1-2, a worm gear elevator testing apparatus for testing a worm gear elevator. The device comprises a test platform driving device configured on a fixed worm gear lifter; the driving device comprises a first driving device and a second driving device, wherein the first driving device is used for providing driving force for a worm wheel of the worm wheel and worm elevator, and the second driving device is used for providing loading force for a lead screw of the worm wheel and worm elevator; and the control mechanism is used for controlling the first driving device to output the driving force, and the control mechanism is used for controlling the second driving device to output the load force. Specifically, the control mechanism comprises a programmable touch screen 1, a test platform external interface 2, a hydraulic system external interface 3, an external power supply interface 4, a plurality of universal wheels 5 arranged at the bottom of the control mechanism, a lifting ring 6 arranged at the top of the control mechanism, a control box, a PLC (programmable logic controller) 7, a stepping motor driver 8, a switching power supply group 9, an MCU (micro control unit) controller 10, a relay group 11 and a signal amplifier group 12.
Specifically, the test platform external interface 2 is connected with a first driving device, the first driving device comprises a stepping motor and a gear transmission device, the stepping motor is connected with a worm wheel of the worm and gear elevator through the gear transmission device, the stepping motor drives the elevator to reciprocate through the gear transmission device, and platform test speed and test stroke management are achieved through control over the stepping motor. In this embodiment, the test platform external interface 2 can interface and manage 4 sets of first driving devices at most.
Specifically, the external interface 3 of the hydraulic system is connected with a second driving device, the second driving device comprises a hydraulic cylinder, a 25MPa overflow valve, a reversing valve, a 1.5KW pump machine, a pressure sensor, a water cooler and a hydraulic pipeline, and the hydraulic cylinder of the hydraulic cylinder is connected with a lead screw of the worm gear lifter. In this embodiment, the hydraulic system external interface can interface and control up to 4 sets of second drive devices. Wherein 4 sets of second driving devices can share one oil tank.
Further, the convertible power supply pack 9 and the external power supply interface 4 provide multi-specification driving power supplies for the first driving device and the second driving device.
Further, the worm and gear elevator testing device also comprises a first temperature sensor for sensing the temperature of the stepping motor, a second temperature sensor for sensing the temperature of the hydraulic oil and a pressure sensor for sensing the pressure of the oil path of the hydraulic pipeline.
The MCU controller 10 controls the stepping motor through a driver to provide the running speed for the worm gear lifter; the PLC 7 is respectively electrically connected with the pressure sensor, the first temperature sensor, the second temperature sensor, an overflow valve arranged on the hydraulic cylinder, a reversing valve arranged on the hydraulic cylinder and the pump machine. Specifically, an overflow valve matched with load force control is communicated with a PLC (programmable logic controller) through a power amplification board, conversation is achieved with an operator through a touch screen, and stepless adjustment of the load force is achieved through a manual debugging interface. The branch pump of the hydraulic load mechanism is a three-phase 380V asynchronous motor, is controlled by a PLC controller, pumps oil in an oil tank into the hydraulic cylinder, and provides power for the hydraulic cylinder.
Specifically, the programmable touch screen 1 is connected with the MCU controller 10 and the PLC controller 7, and sends instructions to the MCU controller 10 and the PLC controller 7 through the human-computer interface control of the programmable touch screen.
The invention also comprises a control method of the worm gear and worm elevator testing device, wherein the control method comprises two control processes of manual debugging and one-key testing. The human-computer interaction interface of the programmable touch screen 1 consists of a manual debugging interface and an automatic testing interface. The test platform where the test product is located can be tested through the manual debugging interface, and the control parameters of different test products can be acquired. The method comprises the steps of hydraulic system load parameters, hydraulic cylinder reset pressure values and test product motion stroke values. Specifically, the control method comprises the following steps:
and calibrating an S1 parameter. And parameter calibration, namely, manually debugging the parameters in the one-key test flow by a manager through a manual debugging interface of the touch screen, setting the parameters, and writing the parameters into the one-key test flow. The specific parameters comprise a first preset speed, a first preset stroke, a first preset time, a first preset load force, a first preset temperature rise speed, a first limit temperature, a second limit temperature, a hydraulic cylinder reset pressure value and a pressure limit value.
Specifically, the pressure limit value of the oil way is set to be 25 MPa; the reset pressure value of the hydraulic cylinder is 5MPa, and the hydraulic rod can be quickly retracted into the cylinder without damage; setting the limit temperature value of the stepping motor to be 80 ℃; the limit temperature value of the hydraulic oil is 60 ℃; the start-up temperature of the water cooler was set to 30 ℃. The first preset temperature rise speed of the hydraulic oil is 0.2 ℃/min. Specifically, the stepping motor drives the elevator to reciprocate through the gear transmission device at a set rotating speed, the travel distance of the elevator in 10S is X meters, the X is input into a travel parameter text box of the touch screen, the touch screen is fed back to the PLC, and the internal parameters of the system are obtained after the internal parameters are processed through a built-in PID algorithm. And at the moment, inputting the stroke Y to be operated into the stroke distance text box of the touch screen, and processing the stroke Y by using a PLC (programmable logic controller) in the system to realize the result that the stroke of the elevator is Y.
And S2, self-checking the equipment, judging the on-line state of the analog quantity by the equipment, and alarming and waiting for the operation confirmation of an operator if the equipment is not on line. If the unimportant analog quantity is off-line, the program runs downwards after the confirmation of the operator.
Specifically, the important analog quantity is an overflow valve opening degree signal quantity and a pipeline pressure value; the non-important analog quantities are motor and hydraulic oil temperature values.
And after the controller finishes the reset action of the hydraulic cylinder according to the set reset pressure value of the hydraulic cylinder, the oil pump is closed and the confirmation is carried out. And finishing the action or state confirmation of closing the overflow valve and the reversing valve in sequence. And checking whether the temperature and pressure parameters are in normal ranges. Specifically, the temperature of the motor is below 60 ℃, the temperature of the hydraulic oil is below 40 ℃, and the pressure parameter is 0 MPa.
And S3, controlling the stepping motor to run at a first preset speed, and continuing to run for a first preset time after the stroke of the stepping motor reaches a first preset stroke.
Specifically, high-speed parameters and operation signals of the stepping motor are sequentially given according to parameter set values, the stepping motor is controlled to operate at a high speed, and the test platform is driven to act, namely the first preset speed is 300 r/min. And when the stroke of the stepping motor reaches the stroke parameter value set by the parameter, the stepping motor continues to run for 1 second.
S4, controlling the stepping motor to continuously run at a first preset speed, controlling the hydraulic cylinder to output a first preset load force, and when the stroke of the stepping motor reaches a second preset stroke, pausing the work of the hydraulic cylinder and continuously running the stepping motor for a second preset time;
specifically, the first preset load force is a low load force, and the low load pressure range is 0.5T to 1T; the second predetermined travel may be equal to the first predetermined travel, and the second predetermined time may be the first predetermined time, which is 1 second.
S5, controlling the stepping motor to operate at a second preset speed, controlling the hydraulic cylinder to output a second preset load force, and when the stroke of the stepping motor reaches a third preset stroke, pausing the operation of the hydraulic cylinder and continuing to operate the stepping motor for a third preset time;
specifically, the second predetermined speed may be a first predetermined speed decreasing with a fixed speed value or a fixed ratio. If the first preset speed is V, the second preset speed can be V-N or V/N; similarly, the second predetermined load force is increased by a fixed force value or a fixed ratio, and if the first predetermined load force is F, the second predetermined load force can be F + FNOr NF. The third predetermined stroke may be equal to the second predetermined strokeSetting the travel, the third preset time may be equal to the second preset time, i.e., 1 second.
And S6, controlling the stepping motor to run at a third preset speed, controlling the hydraulic cylinder to output a third preset load force, when the stroke of the stepping motor reaches a fourth preset stroke, continuing running the stepping motor for a fourth preset time, and then stopping working of the stepping motor and the hydraulic cylinder.
Specifically, the third predetermined speed may be a first predetermined speed decreasing with a fixed speed value or a fixed ratio. If the first preset speed is V, the third preset speed can be V-2N or V/2N; similarly, the third predetermined load force is increased by a fixed force value or a fixed ratio, and if the first predetermined load force is F, the third predetermined load force may be F +2FNOr NF. The fourth preset stroke may be equal to the third preset stroke, and the fourth preset time may be equal to the third preset time, i.e., 1 second.
S7, in the above step, when the temperature of the hydraulic oil exceeds a first preset temperature or the temperature rise speed of the hydraulic oil exceeds a first preset temperature rise speed, a water cooler is opened; when the temperature of the hydraulic oil exceeds a first limit temperature, the worm and gear elevator testing device stops working; when the oil line pressure of the hydraulic pipeline exceeds a pressure limit value, the worm and gear elevator testing device stops working; and when the temperature of the stepping motor exceeds a second limit temperature value, the worm and gear elevator testing device stops working.
Specifically, the first preset temperature is 30 ℃, the first preset temperature rise speed is 0.2 ℃/min, the first limit temperature is 60 ℃, the pressure limit value is 25MPa, and the second limit temperature value is 80 ℃.
Finally, it should be noted that: although the present invention has been described in detail with reference to the foregoing embodiments, it will be apparent to those skilled in the art that changes may be made in the embodiments and/or equivalents thereof without departing from the spirit and scope of the invention. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (3)
1. A control method of a worm gear elevator testing device comprises the worm gear elevator testing device, and the worm gear elevator testing device comprises the following steps: the test platform is configured on the fixed worm gear lifter; a drive device comprising a first drive device and a second drive device;
a first driving device for providing a driving force to a worm wheel of the worm gear elevator; the second driving device is used for providing a loading force for a lead screw of the worm gear elevator; the control mechanism is used for controlling the first driving device to output driving force, and the control mechanism is used for controlling the second driving device to output load force; the control mechanism comprises a plurality of first interfaces connected with the first driving device and is used for receiving information of the first driving device; the control mechanism comprises a plurality of second interfaces connected with the second driving device; the first driving device comprises a stepping motor and a gear transmission device, and the stepping motor is connected with a worm wheel of the worm gear lifter through the gear transmission device; the second driving device comprises a hydraulic cylinder, an overflow valve, a reversing valve, a pump machine, a pressure sensor, a water cooler and a hydraulic pipeline, and a hydraulic rod of the hydraulic cylinder is connected with a lead screw of the worm gear lifter; the worm and gear elevator testing device also comprises a first temperature sensor for sensing the temperature of the stepping motor, a second temperature sensor for sensing the temperature of hydraulic oil and a pressure sensor for sensing the pressure of an oil way of a hydraulic pipeline; the control mechanism comprises an MCU controller and a PLC controller, and the MCU controller controls the stepping motor and provides the running speed for the worm gear lifter; the PLC is respectively and electrically connected with the pressure sensor, the first temperature sensor, the second temperature sensor, the overflow valve, the reversing valve and the pump; the control mechanism also comprises a programmable touch screen, the programmable touch screen is connected with the MCU controller and the PLC controller, and sends instructions to the MCU controller and the PLC controller through the control of a human-computer interaction interface of the programmable touch screen;
the control method of the worm gear elevator testing device further comprises the following steps:
presetting parameters, wherein the parameters comprise a first preset speed, a first preset stroke, a first preset time, a first preset load force, a first preset temperature rise speed, a first limit temperature, a second limit temperature, a hydraulic cylinder homing pressure value and a pressure limit value;
judging the off-line state of the analog quantity, alarming and waiting for confirmation operation if the analog quantity is off-line, controlling the hydraulic cylinder to complete the reset action of the hydraulic cylinder by the reset pressure value of the hydraulic cylinder if the analog quantity is on-line, closing the pump, confirming, sequentially completing the closing of an overflow valve and a reversing valve and confirming, and checking whether the current temperature of the stepping motor, the temperature of hydraulic oil and the pressure of an oil way of a hydraulic pipeline are within a preset range;
controlling a stepping motor to run at a first preset speed, and continuing to run for a first preset time after the stroke of the stepping motor reaches a first preset stroke;
controlling the stepping motor to operate at a first preset speed, controlling the hydraulic cylinder to output a first preset load force, and when the stroke of the stepping motor reaches a second preset stroke, pausing the operation of the hydraulic cylinder and continuing to operate the stepping motor for a second preset time;
controlling the stepping motor to operate at a second preset speed, controlling the hydraulic cylinder to output a second preset load force, and when the stroke of the stepping motor reaches a third preset stroke, pausing the operation of the hydraulic cylinder and continuing to operate the stepping motor for a third preset time;
controlling the stepping motor to run at a third preset speed, controlling the hydraulic cylinder to output a third preset load force, when the stroke of the stepping motor reaches a fourth preset stroke, continuing to run for a fourth preset time by the stepping motor, and then stopping the stepping motor and the hydraulic cylinder;
in the above steps, when the temperature of the hydraulic oil exceeds a first preset temperature or the temperature rise speed of the hydraulic oil exceeds a first preset temperature rise speed, the water cooler is opened; when the temperature of the hydraulic oil exceeds a first limit temperature, the worm and gear elevator testing device stops working; when the oil line pressure of the hydraulic pipeline exceeds a pressure limit value, the worm and gear elevator testing device stops working; and when the temperature of the stepping motor exceeds a second limit temperature value, the worm and gear elevator testing device stops working.
2. The control method of the worm-gear elevator test apparatus as set forth in claim 1, wherein the first preset speed > the second preset speed > the third preset speed, and the first preset load force < the second preset load force < the third preset load force.
3. The control method of the worm-gear elevator testing apparatus according to claim 2, wherein the first preset stroke is a second preset stroke, a third preset stroke, and a fourth preset stroke, and the first preset time is a second preset time, a third preset time, and a fourth preset time.
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| CN201811273883.8A CN109612750B (en) | 2018-10-30 | 2018-10-30 | Worm gear elevator testing device and control method thereof |
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| CN201811273883.8A CN109612750B (en) | 2018-10-30 | 2018-10-30 | Worm gear elevator testing device and control method thereof |
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| CN109612750B true CN109612750B (en) | 2020-10-23 |
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| CN110212822B (en) * | 2019-04-30 | 2021-03-09 | 北京云迹科技有限公司 | Stepping motor control method and device |
| CN113820162B (en) * | 2021-10-12 | 2022-03-29 | 山东盛世恒机械制造有限公司 | Worm lift testing arrangement |
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| CN103697133A (en) * | 2013-11-28 | 2014-04-02 | 江苏泰隆减速机股份有限公司 | Speed reducer for lifting device |
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|---|---|---|---|---|
| GB618670A (en) * | 1946-11-11 | 1949-02-24 | Norman Moss | Power assisted controls for aircraft |
| JPS5724839A (en) * | 1980-07-22 | 1982-02-09 | Mitsubishi Heavy Ind Ltd | Load applying device |
| CN202048978U (en) * | 2011-03-28 | 2011-11-23 | 北京维安技科技发展有限公司 | Automatic test instrument |
| CN103697133A (en) * | 2013-11-28 | 2014-04-02 | 江苏泰隆减速机股份有限公司 | Speed reducer for lifting device |
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