CN212503666U

CN212503666U - Long steel rail hoisting numerical control synchronous centralized control system with electric swing prevention function

Info

Publication number: CN212503666U
Application number: CN202021720332.4U
Authority: CN
Inventors: 郑芳杰; 丁建华; 凌沛洪
Original assignee: Shanghai Railnu Machinery Corp
Current assignee: Shanghai Railnu Machinery Corp
Priority date: 2020-08-18
Filing date: 2020-08-18
Publication date: 2021-02-09
Anticipated expiration: 2030-08-18

Abstract

The utility model discloses a synchronous centralized control system of long rail hoist and mount numerical control with electric pendulum function of preventing, including loop wheel machine (1), relay (2), PLC (3), install translation motor (5) on loop wheel machine (1), PLC (3) link to each other with relay (2), relay (2) through translation converter (6) with translation motor (5) are connected. When using the utility model discloses the time, can utilize electric anti-swing function to restrain the oscillating quantity of lifting hook translation in-process, be a brand-new control mode, it has control simply, implements easy characteristics, simultaneously in the synchronous centralized control hoist and mount operation in-process of long rail, has improved the hoist and has grabbed the success rate of rail and site operation's efficiency, has realized safe operation.

Description

Long steel rail hoisting numerical control synchronous centralized control system with electric swing prevention function

Technical Field

The utility model relates to a synchronous centralized control system of long rail hoist and mount numerical control, more specifically relates to a synchronous centralized control system of long rail hoist and mount numerical control with electrical pendulum-proof function.

Background

With the rapid development of the railway industry in China, higher requirements are put forward on the automation control degree of a steel rail welding base. An automatic group hoisting control mode is provided for hoisting the steel rails with the length of 100 meters or 500 meters. Therefore, the manpower for hoisting and transporting the steel rail is greatly reduced, and the efficiency for hoisting the steel rail is also greatly improved. Meanwhile, the safety factor of steel rail hoisting personnel is also obviously improved. Therefore, each welding rail factory adopts a centralized cluster hoisting mode for hoisting the long steel rail. The precision and the operation efficiency of the suspended rail are greatly influenced by the suspended steel rail and the swinging of the lifting appliance in the operation of the suspended rail, the time consumption of the swinging of the lifting appliance and the steel rail is long if the swinging of the lifting appliance and the steel rail stops by the natural attenuation of the swinging, the higher the transverse moving speed is, the larger the swinging amplitude is and the longer the required attenuation time is. If the waiting time is reduced, the positioning accuracy cannot be guaranteed. In order to solve the shaking problem in the process of hoisting the steel rail with the length of 100 meters or 500 meters, a mechanical anti-swing function is adopted in the past. The mechanical anti-swing power sources mainly include two types: pneumatic and electric. And the pneumatic effect is better. The defect is that the exhaust gas pipe and the gas source are easy to produce condensed water especially in regions with cold weather, which affects the use effect. In addition, some hoisting operations are not frequent in use of the crane, the crossbeam frame of the crane is lower, and a mechanical anti-swing device cannot be installed.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a synchronous centralized control system of long rail hoist and mount numerical control with electric pendulum function of preventing, can realize simple effectual loop wheel machine and prevent the pendulum function in carrying out the synchronous hoist and mount operation in-process of long rail, guarantee that loop wheel machine translation mechanism is level and smooth to carry out speed switching, satisfy under the loop wheel machine stop state, control the swing amplitude at 10mm within range.

The utility model provides a technical scheme that its technical problem adopted as follows:

the utility model provides a synchronous centralized control system of long rail hoist and mount numerical control with electrical anti-swing function, includes loop wheel machine 1, relay 2, PLC3, installs translation motor 5 on the loop wheel machine 1, PLC3 links to each other with relay 2, relay 2 through translation converter 6 with translation motor 5 connects.

As a further improvement, the translational frequency converter 6 is set with a speed 1 and a speed 2, and the rotational speed of the translational motor 5 is three: speed 1 closed, speed 2 closed, or speed 1 and speed 2 all open.

As a further improvement, a lifting motor 8 is installed on the crane 1, the lifting motor 8 is connected with a lifting frequency converter 7, and the lifting frequency converter 7 is connected with a translation frequency converter 6.

As a further improvement, a speed a and a speed b are set in the hoisting frequency converter 7, and the rotating speed of the hoisting motor 8 is three: speed a closed, speed b closed or speed a and speed b all open.

As a further improvement, a lifting appliance 4 is mounted on the crane 1, and a guide plate 9 is mounted on the lifting appliance 4.

According to the utility model discloses an among the long rail hoist and mount numerical control centralized control system with electric anti-swing function, the long rail of hoist and mount is 100 meters-500 meters.

According to the utility model, the numerical control synchronous centralized control system for hoisting long steel rails with the electric anti-swing function comprises an open-loop anti-swing control mode and a closed-loop anti-swing control mode; in the open-loop anti-swing control mode or the closed-loop anti-swing control mode, the PLC3 outputs a trigger control signal, the frequency of the translation frequency converter 6 is increased from zero to a set frequency within a set acceleration time through setting the acceleration time, the swing angle of the hoisted object 10 is increased and then decreased, when the transportation speed of the hoisted object 10 is stable, the swing angle is zero, the trigger control signal is output again through the PLC3 after the operation for a period of time, the frequency of the translation frequency converter 6 is decreased from the set frequency to zero within a set deceleration time through setting the deceleration time, the swing angle of the hoisted object 10 is increased and then decreased, the swing angle is decreased to zero at last, and the hoisted object 10 reaches a specified position at the moment.

According to the utility model discloses a synchronous centralized control system of long rail hoist and mount numerical control with electric anti-swing function, the swing control is at 10mm within range.

The utility model has the advantages of it is following:

1. according to the utility model discloses, utilize electric anti-swing function to restrain the oscillating quantity of lifting hook translation in-process, be a brand-new control mode, it has control simply, implements easy characteristics.

2. Through the utility model discloses, in the synchronous centralized control hoist and mount operation in-process of long rail, improved the hoist and grabbed the success rate of rail and site operation's efficiency, realized safe operation.

Drawings

Other features, objects and advantages of the invention will become more apparent from a reading of the following detailed description of non-limiting embodiments thereof, with reference to the accompanying drawings.

FIG. 1 is a schematic diagram of an open-loop anti-swing control mode of the present invention;

FIG. 2 is a schematic diagram of the closed-loop anti-sway control mode of the present invention;

FIG. 3 is a schematic view of the anti-swing control of the horizontal-moving frequency converter of the present invention;

FIG. 4 is a schematic view of the lifting height of the utility model;

fig. 5 is a schematic diagram of a rail gripping device of the lifting appliance of the present invention;

fig. 6 is a schematic diagram of the structure of the guide plate of the present invention;

in the figure, 1 is a crane, 2 is a relay, 3 is a PLC, 4 is a lifting appliance, 5 is a translation motor, 6 is a translation frequency converter, 7 is a lifting frequency converter, 8 is a lifting motor, 9 is a guide plate, 10 is a lifting object, and 11 is a trolley.

Detailed Description

The present invention is described in detail below with reference to the drawings and examples, but the scope of the invention is not limited thereto.

First embodiment

Fig. 1 is the utility model discloses the pendulum control mode schematic diagram is prevented to the open-loop, wherein, translation converter 6 links to each other with translation motor 5, and translation motor 5's rotational speed is controlled by translation converter 6's output frequency to the transport speed of thing 10 is hung in the control, and translation converter 6 passes through relay 2 and links to each other with PLC3, and the start-up and the stopping of translation converter 6 on all loop wheel loaders 1 are all unified the centralized control by PLC3 through relay 2.

Fig. 3 is the utility model discloses the anti-swing control of translation converter sketch map, PLC3 output triggers control signal, through setting for the acceleration time, in setting for the acceleration time, the frequency of translation converter 6 increases to the frequency of setting for from zero, with the transport speed of lifting device 10 with higher speed to the setting value, such as speed 1, with higher speed to the in-process of speed 1, the angle of swaying of lifting device 10 increases earlier the back and reduces, when the transport speed of lifting device 10 stabilizes at speed 1, the angle of swaying is zero, lifting device 10 passes through trolley 11 at this moment and with constant speed 1 translation on the crossbeam of loop wheel machine 1. After the operation is carried out for a certain time, the PLC3 outputs a trigger control signal again, the frequency of the translation frequency converter 6 is reduced to zero from the set frequency by setting the deceleration time, the transportation speed of the hoisted object 10 is reduced to zero from the set value, the swing angle of the hoisted object 10 is increased and then reduced in the deceleration process, and finally when the translation frequency converter 6 stops, the swing angle is reduced to zero, and the hoisted object 10 reaches a specified position.

Fig. 4 is the utility model discloses hang thing lifting height schematic diagram, wherein H2 is the supreme spacing limit distance of loop wheel machine 1, and H3 is loop wheel machine 1 to lower spacing limit distance, and H1 is when the loop wheel machine 1 actually lifts by crane the operation, hangs thing 10's actual lifting height. In the open-loop anti-swing control mode, the actual lifting height H1 of the hoisted object 10 and the limit distance H2 from the hoist 1 to the upper limit are set in advance, usually H2 is set to be 1 m, and then the acceleration and deceleration time for suppressing the swing of the hoisted object 10 in the transportation process is adjusted by the PLC3 according to the setting of the acceleration and deceleration time in the translation frequency converter 6, so that the anti-swing function of the hoisted object 10 in the transportation process is finally realized, the production beat is shortened, and the production efficiency is improved.

Second embodiment

As fig. 2 does the utility model discloses closed loop prevents putting control mode schematic diagram, has increased to rise converter 7 and has risen motor 8, rises motor 8 and rises to rise converter 7 and be connected, and the rotational speed that rises motor 8 is controlled by the output frequency who rises to rise converter 7, and then the control hangs the lifting speed of thing 10. The second embodiment is similar to the first embodiment, and is different in that the actual lifting height H1 of the hoisted object 10 during the hoisting operation of the hoist 1 can be collected in real time without setting the lifting height of the hoisted object 10 in advance, and then fed back to the translational frequency converter 6 of the hoist 1, and then the acceleration and deceleration time in the translational frequency converter 6 is set through the PLC3 to be the acceleration and deceleration time capable of suppressing the swing of the hoisted object 10 during the transportation process, so that the anti-swing function of the hoisted object 10 during the transportation process is finally realized. The goals of shortening the production takt time and improving the production efficiency are also achieved.

As shown in fig. 1 and 2, the speed 1 and the speed 2 are set in the translatory frequency converter 6, so that the rotational speed of the translatory motor 5 is in three: respectively corresponding to the closing of the speed 1, the closing of the speed 2, or the opening of the speed 1 and the speed 2, wherein when the speed 1 and the speed 2 are opened, the rotating speed of the translation motor 5 is controlled by the rated rotating speed of the translation motor 5; speed a and speed b are set in the hoisting frequency converter 7, so that the rotating speed of the hoisting motor 8 is three: respectively corresponding to the speed a closed state, the speed b closed state or the speed a and the speed b all opened state, when the speed a and the speed b all opened state, the rotating speed of the lifting motor 8 is controlled by the rated rotating speed of the lifting motor 8;

the interval that every loop wheel machine 1 hoisting point was hung to long rail centralized control group is 13.94 meters or 16 meters usually, possesses and carries out the centralized control function through PLC3, PLC3 passes through the synchronous action of the translation converter 6 of relay 2 control and each relay 2 connection, can realize that long rail is synchronous automatic to be snatched and place, the translation of each loop wheel machine 1, the lift is synchronous, can keep long rail natural straightness accuracy in synchronous handling process, avoid because the long rail bending distortion that the handling takes place asynchronously. In order to ensure that the translation mechanisms of the cranes 1 reach stable acceleration and deceleration during the lifting operation of the steel rail with the length of 100 meters or 500 meters, when the anti-swing function is switched, the PLC3 control program is matched to automatically adjust the three-gear running speed of the translation frequency converter 6, the synchronous translation starting and stopping of the cranes 1 are realized through the PLC3 network communication mode, and the mechanical shaking caused by asynchronization in control is solved. The swing of the hung long steel rail can be quickly attenuated, the rail is reliably grabbed and released, the operation efficiency is improved, and the safe operation is realized.

As shown in fig. 5 and 6, the hoist 4 is installed on the crane 1, the guide plate 9 is installed on the hoist 4, and when the translation frequency converter 6 is opened to prevent swinging, if the hoist 4 slightly shakes, the opening of the guide plate 9 can play a role in guiding, so that the hoist 4 can be effectively assisted to overcome slight shaking and accurately grasp the top surface of the long rail. The success rate of the rail grabbing of the lifting appliance 4 and the efficiency of field operation are greatly improved. The labor intensity of operators is reduced. The automatic continuous operation function of the synchronous group hoisting of the long steel rails is realized.

Finally, it should be noted that, although the present invention has been described with reference to the present specific embodiments, it should be understood by those skilled in the art that the above embodiments are only for illustrating the present invention and are not to be used as limitations of the present invention, and that various equivalent changes or substitutions can be made without departing from the spirit of the present invention, and therefore, the changes and modifications to the above embodiments within the spirit of the present invention are all within the scope of the claims of the present invention.

Claims

1. The utility model provides a synchronous centralized control system of long rail hoist and mount numerical control with electric pendulum function of preventing, includes loop wheel machine (1), relay (2), PLC (3), installs translation motor (5) on loop wheel machine (1), PLC (3) link to each other its characterized in that with relay (2): the relay (2) is connected with the translation motor (5) through a translation frequency converter (6).

2. The long steel rail hoisting numerical control synchronous centralized control system with the electric anti-swing function according to claim 1, characterized in that: ports with speed 1 and speed 2 are set in the translation frequency converter (6), and the rotating speed of the translation motor (5) is three: corresponding to speed 1 closed, speed 2 closed, or speed 1 and speed 2 all open, respectively.

3. The long steel rail hoisting numerical control synchronous centralized control system with the electric anti-swing function according to claim 1, characterized in that: still install on loop wheel machine (1) and play to rise motor (8), play to rise motor (8) and play to rise converter (7) and be connected, play to rise converter (7) and be connected with translation converter (6).

4. The long steel rail hoisting numerical control synchronous centralized control system with the electric anti-swing function as claimed in claim 3, characterized in that: the lifting frequency converter (7) is internally provided with a port with speed a and speed b, and the rotating speed of the lifting motor (8) is three: corresponding to speed a closed, speed b closed or speed a and speed b all open, respectively.

5. The long steel rail hoisting numerical control synchronous centralized control system with the electric anti-swing function according to any one of claims 1 to 4, characterized in that: the crane is characterized in that a lifting appliance (4) is installed on the crane (1), and a guide plate (9) is installed on the lifting appliance (4).

6. The long steel rail hoisting numerical control synchronous centralized control system with the electric anti-swing function as claimed in claim 1, wherein the length of the long steel rail is 100 meters or 500 meters.