CN212712641U

CN212712641U - Automatic control system for self-locking switching of lifting platform of contact net multi-platform operation vehicle

Info

Publication number: CN212712641U
Application number: CN202021646177.6U
Authority: CN
Inventors: 权黎明; 吕晓斌
Original assignee: Shaanxi Kaideng Automation Technology Co ltd
Current assignee: Shaanxi Kaideng Automation Technology Co ltd
Priority date: 2020-08-10
Filing date: 2020-08-10
Publication date: 2021-03-16
Anticipated expiration: 2030-08-10

Abstract

The utility model discloses a contact net multi-platform operation car lift platform auto-lock switching automatic control system, which comprises a base, install motor, guide rail, two lead screw fixed blocks on the base, the motor shaft of motor passes through the shaft coupling and is connected with the lead screw, the lead screw rotates and sets up on two lead screw fixed blocks, installs the guide rail between two lead screw fixed blocks, the lead screw passes slider and screw-thread fit, slider and guide rail sliding fit; the sliding block is fixed with a lock column, the base is provided with a forward in-place detection sensor and a backward in-place detection sensor, the motor drives the screw rod to rotate when rotating, and the sliding block moves forward or backward along with the forward and backward rotation of the screw rod. The number of workers under the platform is reduced, the working efficiency is improved, and safety accidents are avoided; this patent increases safe self-lock device, does not reach at the starting condition, and when the platform descends to the sensor open point not closed, presses start button, and the motor can not start, prevents to take place mechanical failure.

Description

Automatic control system for self-locking switching of lifting platform of contact net multi-platform operation vehicle

Technical Field

The utility model belongs to the technical field of contact net multiple platform operation car technique and specifically relates to a contact net multiple platform operation car lift platform auto-lock switching automatic control system that says so.

Background

The self-locking mechanism of the lifting platform of the contact net multi-platform operation vehicle is manually operated, the original mechanism is a lock column, manual withdrawal or locking is needed during use, and workers on the platform and workers below the platform are needed to be matched during operation. If the communication is not smooth during working and a safety accident is likely to happen, the original platform self-locking mechanism is not provided with a descending in-place detection sensor, and if the platform operation vehicle is not descended in place during locking, the platform mechanism can be damaged instead.

SUMMERY OF THE UTILITY MODEL

In order to overcome the above-mentioned defect of prior art, the utility model provides a many platform work of contact net car lift platform auto-lock switches automatic control system.

In order to achieve the above object, the utility model provides a following technical scheme:

a self-locking switching automatic control system for a lifting platform of a contact net multi-platform operation vehicle comprises a base, wherein a motor, a guide rail and two lead screw fixing blocks are arranged on the base, a motor shaft of the motor is connected with a lead screw through a coupler, the lead screw is rotatably arranged on the two lead screw fixing blocks, the guide rail is arranged between the two lead screw fixing blocks, the lead screw penetrates through a sliding block and is in threaded fit, and the sliding block is in sliding fit with the guide rail; the sliding block is fixed with a lock column, the base is provided with an advancing in-place detection sensor and a retreating in-place detection sensor, the motor drives the screw rod to rotate when rotating, and the sliding block advances or retreats along with the forward and reverse rotation of the screw rod;

the platform locking mechanism comprises a base, a platform fixing block, a platform locking hole, a base right fixing block, a base left fixing block and a platform descending in-place sensor, wherein the base right fixing block and the base left fixing block are arranged on an operation vehicle lifting platform;

the control cabinet is internally provided with a switch power supply, a driver, a controller and a speed regulation switch, a panel outside the control cabinet is provided with a forward rotation button and a reverse rotation button, the V + of the switch power supply is connected to a power supply V + DC6V-32V terminal of the controller and a VCC terminal of the driver, the V-of the switch power supply is connected to a power supply V-DNG terminal of the controller and a DNG terminal of the driver, and LN is an AC220V power supply terminal; drivers A + A-and B + B-are respectively connected with phase A and phase B of the motor, PUL +30 and DIR +32 of the drivers are connected with +5VOPTC of the controller, the stepping pulse signal is negatively connected with a direction DIR-terminal of the controller, and the direction control signal is negatively connected with a pulse PUL-terminal of the controller; the blue and brown of the cables of the forward in-place detection sensor and the backward in-place detection sensor are negative and positive, the black wire of the forward in-place detection sensor is connected with the forward rotation limiting terminal of the controller, the black wire of the backward in-place detection sensor is connected with the reverse rotation limiting terminal of the controller, and a pin 1 of the speed regulating button is connected with the external speed regulating terminal of the controller; the start button SB1 on the panel is connected in series with the start point of the platform down position sensor and is connected to the start forward rotation terminal of the controller, and the stop button SB2 is connected to the stop reverse rotation terminal of the controller.

The utility model discloses a technological effect and advantage:

the number of workers under the platform is reduced, the working efficiency is improved, and safety accidents are avoided; this patent increases safe self-lock device, does not reach at the starting condition, and when the platform descends to the sensor open point not closed, presses start button, and the motor can not start, prevents to take place mechanical failure.

Drawings

Fig. 1 is a schematic overall structure diagram of the present invention;

FIG. 2 is a state diagram before and after the change of the present invention;

FIG. 3 is an electrical schematic of the system;

fig. 4 is a control box panel layout diagram.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

As shown in fig. 1-4, the contact net multi-platform working vehicle lifting platform self-locking switching automatic control system comprises a base 13, wherein a motor 1, a guide rail 15 and two lead screw fixing blocks 17 are installed on the base, a motor shaft 18 of the motor 1 is connected with a lead screw 20 through a coupler 2, the lead screw 20 is rotatably arranged on the two lead screw fixing blocks 17, the guide rail 15 is installed between the two lead screw fixing blocks 17, the lead screw 20 penetrates through a sliding block 19 and is in threaded fit, and the sliding block 19 is in sliding fit with the guide rail 15; the screw 20, the slide block 19 and the guide rail 15 form a ball screw pair by the screw fixing block 17; the lock cylinder 3 is fixed on the slide block 19, the forward-in-place detection sensor 14 and the backward-in-place detection sensor 16 are installed on the base 13, the screw rod 20 is driven to rotate when the motor 1 rotates, the slide block 19 moves forward or backward along with the forward and backward rotation of the screw rod 20, and the forward-in-place detection sensor 14 and the backward-in-place detection sensor 16 detect whether the slide block 19 moves forward or backward;

the base right fixing block 6 and the base left fixing block 10 are arranged on a base of an operation vehicle lifting platform, the platform fixing block 8 is arranged at the bottom of the operation vehicle lifting platform, the dotted line position platform fixing block 8 is lifted along with the lifting of the operation vehicle lifting platform, when the platform fixing block 8 is lowered to a platform fixing block falling in-place position 9, a platform locking hole 7 of the platform fixing block 8 is aligned with a right fixing locking hole 5 of the base right fixing block 6 and a left fixing locking hole 11 of the base left fixing block 10, and a platform falling in-place sensor 12 is arranged below the platform fixing block 8;

the control box is characterized by further comprising a control box 34, wherein a DC24V switching power supply 20, a driver 21, a controller 22 and a speed regulation switch 23 are installed in the control box, a forward rotation button 26, a reverse rotation button 27 and an indicator lamp 36 are arranged on a panel 35 outside the control box, a V + of the DC24V switching power supply 20 is connected to a power supply V + DC6V-32V terminal of the controller 22 and a VCC terminal of the driver, a V-of the DC24V switching power supply 20 is connected to a power supply V-DNG terminal of the controller 22 and a DNG terminal of the driver, and LN is an AC220V power supply terminal; drivers A + A-and B + B-are respectively connected with phase A and phase B of the motor, PUL +30 and DIR +32 of the driver 21 are connected with +5VOPTC of the controller 22, a stepping pulse signal minus 31 is connected with a direction DIR-terminal of the controller 22, and a direction control signal minus 33 is connected with a pulse PUL-terminal of the controller 22; the blue and the brown of the cables of the forward in-place detection sensor 14 and the backward in-place detection sensor 16 are negative and positive, the black wire of the forward in-place detection sensor 14 is connected with the positive rotation limit terminal of the controller 22, the black wire of the backward in-place detection sensor 16 is connected with the reverse rotation limit terminal of the controller 22, and the pin 1 of the speed regulating button is connected with the external speed regulating terminal of the controller 22; the start button SB1 on the panel is connected in series with the open point 25 of the platform down position sensor 12 to the start forward rotation terminal of the controller 22, and the stop button SB2 is connected to the stop reverse rotation terminal of the controller 22.

The working process is shown in figure 2:

1. the platform fixed block 8 descends to the position 9, the right fixed lock hole 5, the platform lock hole 7 and the left fixed block lock hole 11 are aligned, the opening point 25 of the platform descending in-place sensor 12 is closed, the forward rotation button SB1 is pressed, the motor 1 starts forward rotation, the lead screw drives the sliding block 19 and the lock cylinder 3 to advance, the lock cylinder 3 reaches the position 4, and the lifting platform is locked after passing through the lock hole right fixed lock hole 5, the platform lock hole 7 and the left fixed block lock hole 11. When the slide 19 moves forward to the position of the forward position detection sensor 14, the sensor 14 gives a signal to the controller 22, and the controller 22 gives a signal for stopping the motor according to the judgment made by the program.

2. When the platform needs to ascend, the SB2 is pressed down, the motor 1 rotates reversely, the lead screw drives the sliding block 19 and the lock column 3 to exit from the right fixed lock hole 5, the platform lock hole 7 and the left fixed block lock hole 11, when the sliding block moves to retreat to the in-place detection sensor 16, the sensor 16 gives an in-place signal to the controller 22, at the moment, the motor stops rotating reversely, the lock column 3 completely exits from the lock hole, and the ascending condition of the platform is achieved.

3. When the platform descending position sensor 12 is disconnected, the motor which is starting the forward rotation button SB1 is pressed, the lock column 3 is not started, and the forward movement is not caused, so that accidents are prevented when the platform descends.

4. Safety protection of the self-locking mechanism: when the platform descends to the position and the opening point 25 of the sensor 12 is not closed, the motor can not rotate forwards. When the forward position detection sensor 14 is turned on, the stage is not operable. The platform can be raised/lowered only when the slide 19 is detected by the retreat position detecting sensor 16.

The points to be finally explained are: first, in the description of the present application, it should be noted that, unless otherwise specified and limited, the terms "mounted," "connected," and "connected" should be understood broadly, and may be a mechanical connection or an electrical connection, or a communication between two elements, and may be a direct connection, and "upper," "lower," "left," and "right" are only used to indicate a relative positional relationship, and when the absolute position of the object to be described is changed, the relative positional relationship may be changed;

the above description is only for the preferred embodiment of the present invention and should not be taken as limiting the invention, and any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. The utility model provides a many platforms of contact net operation car lift platform auto-lock switches automatic control system which characterized in that: the guide rail is arranged between the two lead screw fixing blocks, the lead screw penetrates through the sliding block and is in threaded fit, and the sliding block is in sliding fit with the guide rail; the sliding block is fixed with a lock column, the base is provided with an advancing in-place detection sensor and a retreating in-place detection sensor, the motor drives the screw rod to rotate when rotating, and the sliding block advances or retreats along with the forward and reverse rotation of the screw rod;

the control cabinet is internally provided with a switch power supply, a driver, a controller and a speed regulation switch, a panel outside the control cabinet is provided with a forward rotation button and a reverse rotation button, the V + of the switch power supply is connected to a power supply V + DC6V-32V terminal of the controller and a VCC terminal of the driver, the V-of the switch power supply is connected to a power supply V-DNG terminal of the controller and a DNG terminal of the driver, and LN is an AC220V power supply terminal; drivers A + A-and B + B-are respectively connected with phase A and phase B of the motor, PUL +30 and DIR +32 of the drivers are connected with +5VOPTC of the controller, the stepping pulse signal is negatively connected with a direction DIR-terminal of the controller, and the direction control signal is negatively connected with a pulse PUL-terminal of the controller; the forward in-place detection sensor is connected with the forward rotation limiting terminal of the controller, the backward in-place detection sensor is connected with the reverse rotation limiting terminal of the controller, and the pin 1 of the speed regulating button is connected with the external speed regulating terminal of the controller; the start button SB1 on the panel is connected in series with the start point of the platform down position sensor and is connected to the start forward rotation terminal of the controller, and the stop button SB2 is connected to the stop reverse rotation terminal of the controller.

2. The self-locking switching automatic control system of the lifting platform of the contact net multi-platform working vehicle as claimed in claim 1, characterized in that: and an indicator light is arranged on the panel.