Full-hydraulic intelligent grinding roller working vehicle adopting servo energy-saving control
By adopting a full hydraulic system with servo energy-saving control in the intelligent grinding roller working car, the problems of high no-load energy consumption and poor energy saving effect of traditional hydraulic systems are solved, and the energy consumption is reduced by 20% to 30% and the equipment size is smaller.
Patent Information
- Application Number
- CN202420450381.2
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-03-08
- Publication Date
- 2025-06-17
- Estimated Expiration
- 2034-03-08
AI Technical Summary
The hydraulic system of the existing intelligent grinding roller working vehicle adopts constant pressure variable control method, which has problems such as high no-load energy consumption, poor energy saving effect and large equipment size.
The fully hydraulic intelligent grinding roller working vehicle adopts servo energy-saving control, drives a regular quantity pump through the servo motor to achieve constant voltage and variable speed energy-saving control and rapid response, and cancels the traditional frequency converter motor transmission device.
Compared with the traditional method, the energy consumption is reduced by 20% to 30%, the equipment has smaller appearance size and higher degree of automation, which improves work efficiency and reduces labor intensity.
Smart Images
Figure CN222985238U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the field of keeping rolls for metal rolling in an effective state, and specifically relates to a fully hydraulic intelligent roll grinding working vehicle adopting servo energy-saving control. Background Technique
[0002] In modern steel rolling production processes, high-speed rotating rolls roll steel materials into sheets with required thickness and width through extremely large rolling pressures. To ensure high-quality steel products, the rolls must be replaced after working for a certain number of hours or a certain rolling volume. The rolls taken off the line after work are sent to the roll grinding workshop for necessary grinding, disassembly, cleaning, and reassembly of bearings and bearing seats before they can be put back into use.
[0003] The annual output of modern large-scale hot tandem mills is about 5 million tons, and the annual output of large-scale cold tandem mills is about 2 million tons. Tens of thousands of rolls are replaced every year, and their roll grinding workshops undertake a large amount of roll grinding, disassembly, assembly, greasing, and transportation work.
[0004] For traditional roll grinding workshops, manual operation methods are adopted for the upper and lower roll changing vehicles of rolls, disassembly and assembly of bearing seats, and hoisting of rolls. This method has a large working intensity, requires a large number of on-site staff, and has low work efficiency.
[0005] Currently, there are intelligent roll grinding working vehicles that adopt traditional and mature electro-mechanical-hydraulic technologies, but there are still the following defects:
[0006] 1. The hydraulic system adopts a constant pressure variable control method, and the hydraulic pump is driven by an ordinary constant-speed motor:
[0007] Defects: i. When the system is in no-load, the main pump motor still runs at a constant speed, resulting in more no-load energy consumption; ii. The energy-saving effect of the system is not as good as that of a hydraulic system adopting servo variable speed control; iii. The equipment size is larger than that of a hydraulic system adopting servo variable speed control.
[0008] 2. The traveling of the working vehicle is generally driven by a 15kW variable-frequency motor, and the actions of the on-vehicle equipment of the working vehicle are driven by hydraulics. The power of the hydraulic pump motor is mostly 11 - 18.5kW:
[0009] Defects: i. There are both a variable-frequency motor for traveling and a hydraulic pump motor on the working vehicle, requiring two sets of motors and drive systems; ii. After the working vehicle travels to the designated working position, the on-vehicle equipment can work. Therefore, the configuration of the two sets of motor systems is significantly redundant; iii. There are both variable-frequency motor drive and hydraulic pump constant-speed motor drive on the working vehicle, and the size of the corresponding electric control cabinet is large, which is not conducive to further reducing the external dimension of the working vehicle. Content of the Utility Model
[0010] In order to overcome the defects of the prior art and provide a grinding roll device that improves work efficiency and reduces labor intensity, the present utility model discloses a fully hydraulic intelligent grinding roll working vehicle using servo energy-saving control.
[0011] The present utility model achieves the invention purpose through the following technical solutions:
[0012] A fully hydraulic intelligent grinding roll working vehicle using servo energy-saving control, including a working vehicle, a support platform is provided on the top surface of the working vehicle, and it is characterized in that: it further includes a hydraulic motor, a hydraulic proportional valve, an on-vehicle electric control cabinet, traveling wheels, an on-vehicle hydraulic control device, a servo motor, a fixed-displacement hydraulic pump group, a hydraulic cylinder, an on-vehicle rolling device and a rolling roll.
[0013] On one side of the support platform of the working vehicle, there are a hydraulic motor, a hydraulic proportional valve and an on-vehicle electric control cabinet. The bottom of the working vehicle is rotatably provided with traveling wheels, and the output shaft of the hydraulic motor is connected to the traveling wheels through a pipeline in series with the hydraulic proportional valve.
[0014] On the other side of the support platform of the working vehicle, there are an on-vehicle hydraulic control device, a servo motor and a fixed-displacement hydraulic pump group. The on-vehicle hydraulic control device is built-in with control software. The on-vehicle hydraulic control device is connected to the servo motor through a signal line. The servo motor is built-in with a servo controller, and the output shaft of the servo motor is connected to the fixed-displacement hydraulic pump group.
[0015] In the middle of the support platform of the working vehicle, there are at least two hydraulic cylinders. The fixed-displacement hydraulic pump group is connected to the hydraulic motor and each hydraulic cylinder through pipelines. The moving ends of the piston rods of each hydraulic cylinder are respectively connected to each on-vehicle rolling device, and a rolling roll is provided between the working ends of two relatively arranged on-vehicle rolling devices.
[0016] The fully hydraulic intelligent grinding roll working vehicle using servo energy-saving control is characterized in that: the hydraulic motor selects a low-speed high-torque direct-connected hydraulic motor, and the on-vehicle hydraulic control device selects a single-chip microcomputer or a programmable controller.
[0017] The present utility model uses a servo motor to drive a conventional fixed-displacement pump, and realizes constant-pressure variable-speed energy-saving control and fast response according to the load characteristics and action timing of the main equipment of the working vehicle. Compared with the traditional ordinary constant-speed motor driving a constant-pressure variable-displacement pump method, the energy consumption is reduced by 20% - 30%, and the external dimension of the equipment is smaller.
[0018] In view of the characteristics that the traveling of the fully automatic grinding roll working vehicle and the on-vehicle equipment do not act simultaneously, the working vehicle adopts an innovative design driven by a hydraulic motor, and cancels the traditional variable-frequency motor transmission device.
[0019] After adopting this innovative design, the working vehicle cancels the 15kW traveling variable-frequency motor, and only needs to configure 1 set of 15kW hydraulic pump motor and its transmission. The entire transmission system eliminates the equipment redundancy of the traditional design and is more efficient and compact.
[0020] The utility model adopts a new generation of servo energy-saving control full-hydraulic intelligent (fully automatic) grinding roll working vehicle, which will be more energy-efficient, and the equipment has a smaller external dimension, further reducing the external dimension of the main equipment and the flexibility of the process layout in the grinding roll room.
[0021] In view of the characteristics of the fully automatic (intelligent) grinding roll equipment in the rolling mill, such as high automation, high reliability, compact size, and green energy-saving and high efficiency of the hydraulic (transmission) system, by analyzing the fully automatic grinding roll process and the action sequence of various working vehicles, combined with the variable speed control characteristics of the servo motor, the technical scheme of the full-hydraulic intelligent (fully automatic) grinding roll working vehicle with servo energy-saving control is adopted, which has the following beneficial effects: reducing energy consumption by 20% - 30%, having a smaller external dimension of the equipment, and a high degree of automation. Description of the Drawings
[0022] Figure 1 It is a schematic structural diagram of the present invention. Detailed Embodiments
[0023] The following further illustrates the present invention through specific embodiments. Embodiment
[0024] A full-hydraulic intelligent grinding roll working vehicle with servo energy-saving control includes a working vehicle 1, a hydraulic motor, a hydraulic proportional valve, an on-vehicle electric control cabinet 3, traveling wheels 4, an on-vehicle hydraulic control device 51, a servo motor 52, a fixed-displacement hydraulic pump unit 53, a hydraulic cylinder 6, an on-vehicle rolling equipment 71, and a grinding roll 72, as Figure 1 shown, and the specific structure is as follows:
[0025] A support platform 11 is provided on the top surface of the working vehicle 1. A hydraulic motor, a hydraulic proportional valve, and an on-vehicle electric control cabinet 3 are provided on one side of the support platform 11 of the working vehicle 1. Traveling wheels 4 are rotatably provided at the bottom of the working vehicle 1. The output shaft of the hydraulic motor is connected to the traveling wheels 4 through a pipeline in series with the hydraulic proportional valve;
[0026] An on-vehicle hydraulic control device 51, a servo motor 52, and a fixed-displacement hydraulic pump unit 53 are provided on the other side of the support platform 11 of the working vehicle 1. The on-vehicle hydraulic control device 51 is built with control software. The on-vehicle hydraulic control device 51 is connected to the servo motor 52 through a signal line. The servo motor 52 is built with a servo controller, and the output shaft of the servo motor 52 is connected to the fixed-displacement hydraulic pump unit 53;
[0027] At least two hydraulic cylinders 6 are provided in the middle of the support platform 11 of the working vehicle 1. The fixed-displacement hydraulic pump unit 53 is connected to the hydraulic motor and each hydraulic cylinder 6 through pipelines. The moving ends of the piston rods of each hydraulic cylinder 6 are respectively connected to each on-vehicle rolling equipment 71. A grinding roll 72 is provided between the working ends of two relatively arranged on-vehicle rolling equipment 71.
[0028] In this embodiment, a low-speed high-torque direct-connected hydraulic motor is selected, and the on-vehicle hydraulic control device 51 is a single-chip microcomputer or a programmable logic controller.
[0029] The functions of the components in this embodiment are briefly introduced as follows:
[0030] Work vehicle 1: It is a fully automatic roll grinding work vehicle, which adopts full hydraulic drive and servo energy-saving control. The overall dimensions of the supporting hydraulic and electric control equipment are reduced, making the length of the entire work vehicle about 1 meter shorter than that of the traditional one.
[0031] Hydraulic motor: It is a low-speed high-torque direct-connected hydraulic motor, which replaces the traditional variable-frequency motor - speed reducer drive mode and is used to directly drive the running of the roll grinding work vehicle.
[0032] Hydraulic proportional valve: It is used to control the speed and direction of the work vehicle 1 during running.
[0033] On-vehicle electric control cabinet 3: Due to the adoption of full hydraulic drive, the running motor, its frequency converter and power supply circuit are cancelled, and the overall dimensions of the on-vehicle electric control cabinet are reduced to half of the original.
[0034] Running wheel 4: It is used to drive the running of the work vehicle 1.
[0035] On-vehicle hydraulic control device 51: It adopts servo energy-saving control and has built-in variable speed control software.
[0036] Servo motor 52: It has a built-in servo controller.
[0037] Quantitative hydraulic pump unit 53: It adopts servo variable speed control and is used to provide the required hydraulic pressure and flow rate for the on-vehicle rolling equipment 71.
[0038] Hydraulic cylinder 6: It is used to drive the on-vehicle rolling equipment 71.
[0039] In this embodiment, the servo motor 52 is used to drive the conventional quantitative hydraulic pump unit 53, and the constant pressure variable speed energy-saving control and fast response are realized according to the load characteristics and action timing of the on-vehicle rolling equipment 71. Compared with the traditional ordinary constant speed motor driving constant pressure variable pump mode, the energy consumption is reduced by 20% - 30%, and the overall dimensions of the equipment are smaller.
[0040] In this embodiment, aiming at the characteristic that the running of the fully automatic roll grinding work vehicle and the on-vehicle equipment do not act simultaneously, the work vehicle 1 is directly driven by a low-speed high-torque hydraulic motor under the control of a hydraulic proportional valve, and the traditional variable-frequency motor transmission device is cancelled.
[0041] In this embodiment, the 15kw running variable-frequency motor of the work vehicle 1 is cancelled, and only one 15kw hydraulic pump motor and its transmission need to be configured. The entire transmission system eliminates the equipment redundancy of the traditional design and is more efficient and compact.
[0042] This embodiment is more efficient and energy-saving than the existing grinding roller working vehicle, and has a smaller external dimension, further reducing the external dimension of the main equipment and the flexibility of the process layout between the grinding rollers.
Claims
1. A fully hydraulic intelligent roller grinding work vehicle using servo energy-saving control, comprising a work vehicle (1), the top surface of the work vehicle (1) being provided with a supporting platform (11), wherein: It also includes a hydraulic motor, a hydraulic proportional valve, an on-board electric control cabinet (3), a running wheel (4), an on-board hydraulic control device (51), a servo motor (52), a quantitative hydraulic pump group (53), a hydraulic cylinder (6), an on-board rolling device (71) and a roller (72), A hydraulic motor, a hydraulic proportional valve and an onboard electric control cabinet (3) are provided on one side of a support platform (11) of the working vehicle (1); a running wheel (4) is rotatably provided at the bottom of the working vehicle (1); an output shaft of the hydraulic motor is connected to the running wheel (4) via a pipeline connected in series with the hydraulic proportional valve; The other side of the support platform (11) of the work vehicle (1) is provided with a vehicle-mounted hydraulic control device (51), a servo motor (52) and a quantitative hydraulic pump group (53); the vehicle-mounted hydraulic control device (51) has built-in control software; the vehicle-mounted hydraulic control device (51) is connected to the servo motor (52) via a signal line; the servo motor (52) has a built-in servo controller; and the output shaft of the servo motor (52) is connected to the quantitative hydraulic pump group (53); At least two hydraulic cylinders (6) are provided in the middle of a support platform (11) of a working vehicle (1); a quantitative hydraulic pump group (53) is connected to a hydraulic motor and each hydraulic cylinder (6) through a pipeline; the movable end of a piston rod of each hydraulic cylinder (6) is respectively connected to each vehicle-mounted rolling equipment (71); and a rolling roller (72) is provided between the working ends of two vehicle-mounted rolling equipment (71) arranged opposite to each other.
2. The fully hydraulic intelligent roller grinding vehicle using servo energy-saving control as claimed in claim 1 is characterized in that: The hydraulic motor is a low-speed high-torque direct-connected hydraulic motor, and the vehicle-mounted hydraulic control device (51) is a single-chip microcomputer or a programmable controller.