CN213538891U - Screw hoist driven and controlled by servo motor - Google Patents
Screw hoist driven and controlled by servo motor Download PDFInfo
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- CN213538891U CN213538891U CN202022204233.7U CN202022204233U CN213538891U CN 213538891 U CN213538891 U CN 213538891U CN 202022204233 U CN202022204233 U CN 202022204233U CN 213538891 U CN213538891 U CN 213538891U
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Abstract
The utility model discloses a screw type hoist driven and controlled by a servo motor, which comprises a base and a case arranged on the base, wherein a servo motor is fixed on one side surface of the case, and a worm, a worm wheel, a transmission nut and a lifting screw are arranged inside the case; the worm wheel is connected with the worm in a meshed mode, the transmission nut is fixed on the inner side face of the worm wheel, internal threads are arranged in the transmission nut, external threads are arranged on the lifting screw rod, and the lifting screw rod is vertically arranged in the transmission nut. The utility model discloses need not complicated electric return circuit and a large amount of peripheral electrical components and parts, reduced control system's components and parts quantity, the time that reduces the equipment fixing needs has reduced possible fault point, makes the complexity of electrical control part reduce by a wide margin to and the security in the reliability and the use of equipment has been improved.
Description
Technical Field
The utility model belongs to the technical field of the irrigation and water conservancy, specific saying so relates to an utilize screw headstock gear of servo motor drive and control.
Background
The gate opening and closing machine is installed on the empty opening of the buildings such as reservoir, water drainage hole, hydraulic tunnel and water gate, etc. and is used for opening and closing the gate to regulate flow, control upstream and downstream water level, discharge flood, remove silt or floating material, etc. and is a key component of the hydraulic equipment.
The traditional screw hoist drives a screw nut to transmit by a squirrel-cage alternating current motor, so that the rotating speed of the motor cannot be automatically adjusted, the torque of the motor cannot be automatically adjusted, the current cannot be automatically monitored, the number of turns of the motor cannot be counted, the running state of the hoist cannot be perfectly monitored, the running safety cannot be monitored, and the forward and reverse rotation of the motor needs an additional relay loop and the like. If the above functions are to be realized, a large number of additional electrical components, such as a mutual inductor, an intermediate relay, an ac contactor, a load sensor, a brake position sensor, and even a frequency converter, are required, so that a large number of peripheral electrical components are required and a complex electrical loop is formed, which not only increases the installation time and the cost, but also increases the number of fault points, thereby affecting the reliability of the equipment and the safety in the use process.
Disclosure of Invention
In order to overcome the defects, the utility model provides an utilize screw headstock gear of servo motor drive and control can replace above-mentioned complicated electric circuit and a large amount of peripheral electrical components and parts completely, has reduced control system's components and parts quantity, and the time that reduces the equipment fixing needs has reduced possible fault point, makes the complexity of electrical control part reduce by a wide margin to and the security in the reliability and the use of equipment has been improved.
The utility model discloses a solve the technical scheme that its technical problem adopted and be: a screw hoist driven and controlled by a servo motor comprises a base and a case arranged on the base, wherein the servo motor is fixed on one side surface of the case, a worm gear, a transmission nut and a lifting screw are arranged in the case, the worm is transversely erected on two opposite side surfaces of the case, and one end of the worm is fixedly connected with an output shaft of the servo motor; the worm wheel with the worm meshing is connected, drive nut is fixed in on the medial surface of worm wheel, be equipped with the internal thread in the drive nut, be equipped with the external screw thread on the lifting screw, this lifting screw vertically set up in the drive nut, and this lifting screw's external screw thread with drive nut's internal thread meshing is connected.
As a further improvement, the bottom of the lifting screw is provided with a pin hole, and the lifting lug on the flashboard is connected with the pin hole of the lifting screw through a pin.
As a further improvement, the servo motor's afterbody is equipped with the encoder that is used for detecting servo motor pivoted number of turns and position.
As a further improvement, the servo driver of the servo motor is in signaling connection with the main controller through the RS485 bus, and the main controller is a PLC or a singlechip with an RS485 communication function.
As a further improvement, the main controller controls the servo driver through the RS485 bus, and indirectly controls the rotating speed and the rotating direction of the servo motor.
As a further improvement, the main controller controls the output current of the servo driver through the RS485 bus, and indirectly controls the output torque of the servo motor.
As a further improvement, the servo driver will the number of turns of the servo motor that the encoder detected and the digital signal of position transmit for main control unit, and this main control unit passes through the number of turns of received motor pivoted and position signal, and the position that the gate was located is calculated to motor and worm, worm and worm wheel, drive nut and lifting screw's transmission ratio and pitch data.
As a further improvement, the servo driver is installed in the electrical control cabinet, the encoder is the absolute value encoder, the base is the iron casting base.
As a further improvement, the top of the lifting screw is provided with a transverse locating part, the upper side face of the case is provided with a travel switch, and the transmission nut is fixed on the inner side face of the worm wheel through a flat key.
As a further improvement of the utility model, the other end of the worm is connected with a detachable handle.
The utility model has the advantages that: the screw hoist driven and controlled by the servo motor is a manual and electric screw hoist, adopts a servo driving technology, and is a complete set of automatic equipment integrating mechanical transmission, automatic control, man-machine interaction, sensor data acquisition and signal remote transmission control. The sluice gate can be automatically controlled to realize remote monitoring and management of the sluice gate, and the running state, hydrology and water regime data and field transmission of the sluice gate can be transmitted to a superior management and dispatching department, so that scientific dispatching and decision making are realized. The automatic control system has the advantages of simple structure, low manufacturing cost, high automation degree, high safety coefficient, stable and reliable operation and the like.
Drawings
FIG. 1 is a schematic structural view of the present invention;
fig. 2 is a schematic view of the internal structure of the present invention.
The following description is made with reference to the accompanying drawings:
1-servo motor; 2-worm;
3-worm wheel; 4-flat bond;
5-a driving nut; 6-a case;
7-lifting screw; 8-base;
9-encoder; 10-servo driver;
11-485 bus; 12-main controller;
13-a stop; 15-travel switch;
16-handle.
Detailed Description
The following description of the preferred embodiments of the present invention will be made in conjunction with the accompanying drawings.
Referring to fig. 1-2, in order to provide the screw hoist driven and controlled by the servo motor of the present invention, the hoist includes a base 8 and a case 6 disposed on the base, a servo motor 1 is fixed on one side of the case 6, and a worm 2, a worm wheel 3, a transmission nut 5 and a lifting screw 7 are disposed inside the case, the worm 2 is transversely erected on two opposite sides of the case, and one end of the worm is fixedly connected with an output shaft of the servo motor; the worm wheel 3 is meshed with the worm 2, the transmission nut 5 is fixed on the inner side surface of the worm wheel 3 through a flat key 4, an internal thread is arranged in the transmission nut 5, an external thread is arranged on the lifting screw 7, the lifting screw 7 is vertically arranged in the transmission nut 5, and the external thread of the lifting screw 7 is meshed with the internal thread of the transmission nut 5; the bottom of the lifting screw 7 is provided with a pin hole, and a lifting lug on the flashboard is connected with the pin hole of the lifting screw through a pin.
During operation, the output shaft of servo motor 1 drives worm 2 installed in quick-witted case 6 and rotates, worm 2 drives worm wheel 3 and has reduced the rotational speed and has enlarged pivoted torsion simultaneously, worm wheel 3 drives heavy drive nut 5 through flat key 4 and rotates in step, drive nut 5 is owing to connect through screw and lifting screw meshing, when drive nut 5 was rotatory along with worm wheel 3, drive lifting screw 7 goes up and down, simultaneously because the flashboard is fixed in lifting screw 7's bottom, final lifting screw 7's lift drives the gate switch, realize its function of opening and close.
In order to prevent the lifting screw 7 from hitting the upper side of the case when it is lowered, a lateral stop 13 is provided at the top of the lifting screw, and a travel switch 15 is provided on the upper side of the case for interrupting the circuit and preventing the lifting screw from moving beyond a limit position.
The utility model discloses still be in servo motor's afterbody is equipped with the encoder 9 that is used for detecting servo motor pivoted number of turns and position, and this encoder 9 is preferred to be the absolute value encoder. A servo driver 10 of the servo motor is in signaling connection with a main controller 12 through an RS485 bus 11, and the main controller 12 is a PLC or a single chip microcomputer with an RS485 communication function. The main controller 12 controls the servo driver through the RS485 bus, and indirectly controls the rotation speed and the rotation direction of the servo motor, thereby realizing the adjustment of the opening and closing speed of the gate and the directional control of opening or closing the gate. Or, the main controller 12 controls the output current of the servo driver through the RS485 bus, and indirectly controls the output torque of the servo motor, so as to control the maximum opening and closing force of the gate, and the opening force and the closing force can be set to different limit values, thereby preventing overload damage.
The servo driver is arranged in the electric control cabinet, and positive and negative rotation control of the motor and lifting control of the gate can be realized without an alternating current contactor. The servo driver 10 transmits the digital signals of the number of turns and the position of the servo motor detected by the encoder 9 to the main controller 12, and the main controller 12 calculates the position of the gate through the received number of turns and the position signals of the motor rotation, and the transmission ratio and the pitch data of the motor, the worm wheel, the transmission nut and the lifting screw.
The screw hoist driven and controlled by the servo motor is simple in electrical structure, and can be remotely controlled and used for collecting and reporting gate operation data through a main controller, namely a PLC (programmable logic controller) or a single chip microcomputer with an RS485 function, so that the position of a gate can be accurately displayed and controlled; the upper limit and the lower limit of the gate can be set, the torque of the motor can be detected in real time, and the opening force and the closing force of the hoist can be actively regulated and controlled; the operation can be adjusted in speed, and accelerated starting, rapid operation, slow door closing and decelerated stopping can be realized.
The utility model discloses still be in the other end of worm 2 is connected with detachable handle 16, when servo motor breaks down, can manually control the gate, realizes the flashlight dual-purpose.
Therefore, the screw hoist driven and controlled by the servo motor is a manual and electric screw hoist, adopts a servo driving technology and a screw hoist servo driving technology, and is a complete set of automatic equipment integrating mechanical transmission, automatic control, human-computer interaction, sensor data acquisition and signal remote transmission control. The sluice gate can be automatically controlled to realize remote monitoring and management of the sluice gate, and the running state, hydrology and water regime data and field transmission of the sluice gate can be transmitted to a superior management and dispatching department, so that scientific dispatching and decision making are realized. The automatic control system has the advantages of simple structure, low manufacturing cost, high automation degree, high safety coefficient, stable and reliable operation and the like.
In the previous description, numerous specific details were set forth in order to provide a thorough understanding of the invention. The foregoing description is only illustrative of the preferred embodiments of the invention, which can be embodied in many different forms and should not be construed as limited to the embodiments set forth herein. While the invention has been described with reference to a preferred embodiment, it will be understood by those skilled in the art that various changes may be made and equivalents may be substituted for elements thereof without departing from the scope of the invention. All the contents that do not depart from the technical solution of the present invention, any simple modification, equivalent change and modification made to the above embodiments according to the technical substance of the present invention all still belong to the protection scope of the technical solution of the present invention.
Claims (10)
1. The utility model provides an utilize screw headstock gear of servo motor drive and control, includes base (8) and locates quick-witted case (6) on this base, its characterized in that: a servo motor (1) is fixed on one side face of the case, a worm (2), a worm wheel (3), a transmission nut (5) and a lifting screw (7) are arranged in the servo motor, the worm (2) is transversely erected on two opposite side faces of the case, and one end of the worm is fixedly connected with an output shaft of the servo motor; worm wheel (3) with worm (2) meshing is connected, drive nut (5) are fixed in on the medial surface of worm wheel (3), be equipped with the internal thread in drive nut (5), be equipped with the external screw thread on lifting screw (7), this lifting screw (7) along vertical set up in drive nut (5), and the external screw thread of this lifting screw (7) with the internal thread meshing of drive nut (5) is connected.
2. The screw hoist driven and controlled by a servo motor according to claim 1, wherein: the bottom of the lifting screw (7) is provided with a pin hole, and the lifting lug on the flashboard is connected with the pin hole of the lifting screw through a pin.
3. The screw hoist driven and controlled by a servo motor according to claim 2, wherein: and the tail part of the servo motor is provided with an encoder (9) for detecting the rotating number and position of the servo motor.
4. The screw hoist driven and controlled by a servo motor according to claim 3, wherein: servo driver (10) of servo motor pass through RS485 bus (11) and main control unit (12) signal connection, main control unit (12) are PLC or take RS485 communication function's singlechip.
5. The screw hoist driven and controlled by a servo motor as claimed in claim 4, wherein: and the main controller (12) controls the servo driver through an RS485 bus to indirectly control the rotating speed and the rotating direction of the servo motor.
6. The screw hoist driven and controlled by a servo motor as claimed in claim 4, wherein: the main controller (12) controls the output current of the servo driver through an RS485 bus, and indirectly controls the output torque of the servo motor.
7. The screw hoist driven and controlled by a servo motor as claimed in claim 4, wherein: the servo driver (10) transmits the number of turns and the digital signal of the position of the servo motor detected by the encoder (9) to the main controller (12), and the main controller (12) calculates the position of the gate through the received number of turns and the position signal of the motor rotation, the transmission ratio and the pitch data of the motor, the worm wheel, the transmission nut and the lifting screw.
8. The screw hoist driven and controlled by a servo motor as claimed in claim 4, wherein: the servo driver is installed in the electrical control cabinet, the encoder is an absolute value encoder, and the base is an iron casting base.
9. The screw hoist driven and controlled by a servo motor according to claim 1, wherein: the top of the lifting screw is provided with a transverse limiting piece (13), the upper side face of the case is provided with a travel switch (15), and the transmission nut (5) is fixed on the inner side face of the worm wheel (3) through a flat key (4).
10. The screw hoist driven and controlled by a servo motor according to claim 1, wherein: the other end of the worm (2) is connected with a detachable handle (16).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022204233.7U CN213538891U (en) | 2020-09-30 | 2020-09-30 | Screw hoist driven and controlled by servo motor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022204233.7U CN213538891U (en) | 2020-09-30 | 2020-09-30 | Screw hoist driven and controlled by servo motor |
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| Publication Number | Publication Date |
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| CN213538891U true CN213538891U (en) | 2021-06-25 |
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| CN202022204233.7U Active CN213538891U (en) | 2020-09-30 | 2020-09-30 | Screw hoist driven and controlled by servo motor |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113341318A (en) * | 2021-07-05 | 2021-09-03 | 上海海事大学 | New forms of energy motor is to dragging capability test system |
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2020
- 2020-09-30 CN CN202022204233.7U patent/CN213538891U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113341318A (en) * | 2021-07-05 | 2021-09-03 | 上海海事大学 | New forms of energy motor is to dragging capability test system |
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