Servo drive synchronous door opening and closing hydraulic system
By servo-driven synchronous opening and closing of the door hydraulic system, the motor speed is used to control the flow of the hydraulic system, which solves the problem of asynchronous movement of the cylinders of large door equipment and achieves synchronous opening and closing and maximum energy saving effects.
Patent Information
- Application Number
- CN202421221654.2
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-05-31
- Publication Date
- 2025-01-21
- Estimated Expiration
- 2034-05-31
AI Technical Summary
During the opening process of large-scale door equipment, the movements of the two oil cylinders in the oil circuit are not synchronized, resulting in a phenomenon of unblocking and being unable to be fully opened or closed, which poses major safety hazards, especially in the application of opening and closing machines in the water conservancy industry.
A servo-driven synchronous opening and closing door hydraulic system is designed. The flow of the hydraulic system is controlled by the motor speed, and the synchronization and deviation correction of the two cylinders are adjusted to ensure the synchronous opening and closing of the door.
It achieves synchronous control without redundant energy loss, maximizing energy saving, and recycles the motor power during the process of the door's weight decreasing, further saving energy.
Smart Images
Figure CN222376832U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of opening and closing doors, in particular to a servo-driven synchronous opening and closing door hydraulic system. Background Art
[0002] During the opening process of large door equipment, the movement of the two cylinders in the oil circuit cannot be guaranteed to be synchronized, resulting in jamming, which causes the door to not be fully opened or closed, leading to major accidents. Especially in the water conservancy industry, the inability to open and close normally when using the gate hoist will have catastrophic consequences. Summary of the invention
[0003] The purpose of the utility model is to provide a servo-driven synchronous door opening and closing hydraulic system with a simple structure, reasonable design and easy use in view of the defects and shortcomings of the prior art. The hydraulic system can adjust the synchronization and deviation of the two cylinders by changing the flow of the hydraulic system through the motor speed using a controller.
[0004] To achieve the above purpose, the technical solution adopted by the utility model is: it includes an electrical control system, a hydraulic cylinder and an opening and closing door body, and the left and right sides of the opening and closing door body are provided with hydraulic cylinders, and the hydraulic cylinders are respectively connected to the electrical control system;
[0005] It also contains:
[0006] The motors are two in number and are arranged on both sides of the electrical control system respectively and are connected to the electrical control system through a servo driver; a hydraulic pump is arranged on one side of the motor, and the output end of the motor is connected to the hydraulic pump; the hydraulic pumps are connected to corresponding hydraulic cylinders respectively.
[0007] As a further improvement of the utility model, the connection between the hydraulic pump and the hydraulic cylinder is sequentially connected with an overflow valve, an electromagnetic stop valve and a pressure sensor, and the electromagnetic stop valve and the pressure sensor are respectively connected with the electrical control system.
[0008] After adopting the above structure, the utility model has the following beneficial effects:
[0009] 1. Use the change of motor speed to adjust the volume speed, without unnecessary energy loss, and also avoid throttling loss, thus maximizing energy saving;
[0010] 2. During the process of the door body's weight decreasing, the motor can recover energy to the electrical control system to save energy. BRIEF DESCRIPTION OF THE DRAWINGS
[0011] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.
[0012] Figure 1 It is a structural schematic diagram of the utility model.
[0013] Description of reference numerals:
[0014] Electrical control system 1, hydraulic cylinder 2, opening and closing door body 3, motor 4, servo driver 5, hydraulic pump 6, overflow valve 7, electromagnetic stop valve 8, pressure sensor 9, position sensor 10. DETAILED DESCRIPTION
[0015] The utility model is further described below in conjunction with the accompanying drawings. Example
[0016] See also Figure 1 , this embodiment includes an electrical control system 1, a hydraulic cylinder 2 and an opening and closing door body 3, the opening and closing door body 3 is provided with a hydraulic cylinder 2 on both sides, and the hydraulic cylinder 2 is respectively connected to the electrical control system 1; the electrical control system 1 is a closed-loop control system;
[0017] It also contains:
[0018] Motor 4, there are two motors 4, which are respectively arranged on both sides of the electrical control system 1, and are connected to the electrical control system 1 through a servo driver 5; the specific use model of motor 4 is directly purchased, installed and used from the market according to actual use requirements; a hydraulic pump 6 is arranged on one side of the motor 4, and the output end of the motor 4 is connected to the hydraulic pump 6; the hydraulic pumps 6 are respectively connected to the corresponding hydraulic cylinders 2; the specific use model of the hydraulic pump 6 is directly purchased, installed and used from the market according to actual use requirements; the connection between the hydraulic pump 6 and the hydraulic cylinder 2 is sequentially connected with an overflow valve 7, an electromagnetic stop valve 8 and a pressure sensor 9, and the electromagnetic stop valve 8 and the pressure sensor 9 are respectively connected to the electrical control system 1; the specific use models of the overflow valve 7, the electromagnetic stop valve 8 and the pressure sensor 9 are directly purchased, installed and used from the market according to actual use requirements.
[0019] When the utility model is used, the electrical control system 1 provides a control signal to the servo driver 5 after the control program is calculated, and the servo driver 5 drives the motor 4. The motor 4 can be a variable speed motor, a servo motor or a variable frequency motor to drive the hydraulic pump 6 to rotate at a variable speed, and provide high-pressure hydraulic oil to the hydraulic system. The hydraulic oil passes through the main oil circuit in parallel with the safety overflow valve 7 to protect the oil circuit;
[0020] The hydraulic oil switches the oil circuit through the electromagnetic shut-off valve 8, and then reaches the lower chamber of the hydraulic cylinder 2 to drive the hydraulic cylinder 2 to drive the opening and closing door body 3 to rise and fall; the large opening and closing door body 3 is synchronously lifted from both ends of the opening and closing door body 3 by two hydraulic cylinders 2 at the same time; the lifting speed and position control are adjusted by the electrical control system 1;
[0021] During the descent of the door body 3, the door's own weight drives the hydraulic cylinder 2 to descend, and the hydraulic oil reaches the hydraulic pump 6 after passing through the electromagnetic stop valve 8. The hydraulic pump 6 reverses and drives the servo motor 4 to rotate; the descent speed and position control are adjusted by the electrical control system 1;
[0022] The electrical control system 1 gives the servo motor 4 a speed command to change the flow of the hydraulic system to adjust the synchronous control of the hydraulic cylinders 2 on both sides during the rising and falling processes. In addition, when there is no synchronization, correction can also be achieved through different control signals; the electrical control system 1 is a closed-loop control system, which controls the signal of the position sensor 10 carried by the hydraulic cylinder 2 and feeds it back to the electrical control system 1. The electrical control system 1 completes the closed-loop synchronous operation based on the command signal and the feedback position signal, and gives the two motors 4 their own speed signals; in addition, during the operation, the oil ports of the two hydraulic cylinders 2 are each equipped with a pressure sensor 9 for pressure detection of the two hydraulic cylinders 2 to prevent overpressure or monitor the pressure difference between the two hydraulic cylinders 2.
[0023] After adopting the above structure, the beneficial effects of this specific implementation are:
[0024] 1. The speed change of motor 4 is used to adjust the volume speed, without any extra energy loss, and also avoiding throttling loss, thus maximizing energy saving;
[0025] 2. During the process of the self-weight of the door body 3 descending, the energy of the motor 4 may be recovered to the electrical control system 1 to save energy.
[0026] The above description is only used to illustrate the technical solution of the utility model rather than to limit it. Other modifications or equivalent substitutions made to the technical solution of the utility model by ordinary technicians in this field should be included in the scope of the claims of the utility model as long as they do not depart from the spirit and scope of the technical solution of the utility model.
Claims
1. A servo-driven synchronous door opening and closing hydraulic system, comprising an electrical control system (1), a hydraulic cylinder (2) and an opening and closing door body (3), wherein the hydraulic cylinders (2) are arranged on both sides of the opening and closing door body (3), and the hydraulic cylinders (2) are respectively connected to the electrical control system (1); It is characterized in that It also contains: The motor (4) is two in number and is disposed on both sides of the electrical control system (1) and is connected to the electrical control system (1) via a servo driver (5); a hydraulic pump (6) is disposed on one side of the motor (4), and an output end of the motor (4) is connected to the hydraulic pump (6); the hydraulic pumps (6) are respectively connected to corresponding hydraulic cylinders (2).
2. A servo-driven synchronous door opening and closing hydraulic system according to claim 1, characterized in that: The connection between the hydraulic pump (6) and the hydraulic cylinder (2) is connected in sequence with an overflow valve (7), an electromagnetic stop valve (8) and a pressure sensor (9), and the electromagnetic stop valve (8) and the pressure sensor (9) are respectively connected to the electrical control system (1).