CN218345049U

CN218345049U - Electronic fire cut-off device of electric hoist

Info

Publication number: CN218345049U
Application number: CN202221485065.6U
Authority: CN
Inventors: 李军
Original assignee: Nantong Cosco Heavy Industry Co ltd
Current assignee: Nantong Cosco Shipping Heavy Industry Equipment Co ltd
Priority date: 2022-06-15
Filing date: 2022-06-15
Publication date: 2023-01-20
Anticipated expiration: 2032-06-15

Abstract

The utility model discloses an electric block's electron ware of cutting off firet, including the motor, be connected with the reel between motor and the speed reducer, the reel is equipped with the rope guide outward, and rope guide upper portion is fixed with U type dog, and U type dog is located between two sensors, and sensor and electronic module are connected, and electronic module includes electronic module A and electronic module B, and electronic module A and electronic module B are connected with the lower spacing sensor and the last spacing sensor of sensor respectively. The utility model discloses be connected between electronic module and the sensor, through the sensor to the response of U type dog, realize the break-make to the positive pole of sensor inside, realize the break-make to electronic relay in the electronic module to the realization need not strike upper and lower spacing piece to the break-make of motor, avoids damaging failure, effectively improves electric block's safety in utilization performance.

Description

Electronic fire cut-off device of electric hoist

Technical Field

The utility model relates to an electric block field specifically is an electric block's disconnected firearm of electron.

Background

The existing flame breaker LXD-20 of the electric hoist and the like are limited up and down due to frequent impact of an operator during operation, when the rope guider moves to the position of the stop block, the pull rod is pushed or pulled to break the flame breaker to break a forward or reverse contact, so that when a power supply of a main hook motor stops rotating, because the flame breaker is pulled back and forth, sometimes, because of the inertia of the motor, a spring of the flame breaker breaks and closes a mechanical contact, a bakelite structure of a shell is easy to crack, and the flame breaker is easy to damage.

In the published document CN 201120431990-a top-impact-prevention frequency conversion circuit for controlling an electric hoist, the structure is also a protection device for the electric hoist, and in such a structure, when a lifting hook reaches a lifting limit point, a rope guider is translated to push an S95 fire breaking limit ascending slider to drive a guide rod, and finally the guide rod pushes an S95-1 lifting limit switch of a fire breaker graph 2, S95-1 is disconnected, and a K01 lifting limit is disconnected. The guide rod needs to push away the ascending limit switch to disconnect the limit device, the electric hoist needs to be used for a long time, and the guide rod continuously pushes away the ascending limit switch.

SUMMERY OF THE UTILITY MODEL

In order to solve the problem, the utility model discloses an electric block's disconnected firearm of electron effectively improves electric block's disconnected firearm of electron life, improves the security performance.

The technical scheme of the utility model is that: the utility model provides an electric block's electron ware of cutting somebody's hair, includes the motor, is connected with the reel between motor and the speed reducer, and the reel is equipped with the rope guide outward, and rope guide upper portion is fixed with U type dog, and U type dog is located between two sensors, and sensor and electronic module are connected, and electronic module includes electronic module A and electronic module B, and electronic module A and electronic module B are connected with the lower spacing sensor and the last spacing sensor of sensor respectively.

Furthermore, the negative pole and the switch of the lower limit sensor are respectively connected with the contact KA1 and the contact KA2 of the electronic module A, and the positive pole of the lower limit sensor, the contact KA1 and the contact KA2 are connected with the power supply.

Furthermore, the negative electrode and the switch of the upper limiting sensor are respectively connected with the contact KA3 and the contact KA4 of the electronic module B, and the positive electrode of the upper limiting sensor, the contact KA3 and the contact KA4 are connected with the power supply.

Furthermore, the sensor is a Beacon NBB20-L2-E2-V1 inductive sensor, and the sensing distance of the sensor is 11-13mm.

Furthermore, the input of the electronic module A is connected with an external main hook reverse rotation contactor, the output of the electronic module A is connected with the motor, the input of the electronic module B is connected with an external main hook forward rotation contactor, and the output of the electronic module B is connected with the motor.

Further, the sensor is installed on electric block's shell body, and the reel both sides are distributed, and the main hook with pass through the rope and be connected with the rope guide, the rope wear out from the spacing downthehole of rope guide side and main hook connection, U type dog and sensor are on same horizontal plane.

The utility model discloses an useful part: 1. the utility model discloses an installation U type link stopper and at the sensor of U type link stopper both sides on the rope guide, the position of U type link stopper can be accurately responded to, the position of main hook promptly carries out corotation or reversal through outside main hook corotation contactor and outside main hook reversal contactor to the motor.

2. The utility model discloses be connected between electronic module and the sensor, through the sensor to the response of U type dog, realize the break-make to the positive pole of sensor inside, realize the break-make to electronic relay in the electronic module to the realization need not strike upper and lower spacing piece to the break-make of motor, avoids damaging failure, effectively improves electric block's safety in utilization performance.

Drawings

Fig. 1 is a schematic structural view of the present invention;

fig. 2 is a circuit diagram of the electronic module of the present invention;

FIG. 3 is a circuit diagram of the sensor and control box connection of the present invention;

wherein: 1. u-shaped dog, 1-1, spacing hole, 2, last spacing sensor, 3, lower spacing sensor, 4, electronic module A,5, electronic module B,6, main hook, 7, speed reducer, 8, motor, 9, reel, 10, rope guide, 11, rope.

Detailed Description

In order to deepen the understanding of the present invention, the following detailed description is given with reference to the accompanying drawings to explain the specific embodiments of the present invention, which are only used for explaining the present invention, and do not constitute a limitation to the protection scope of the present invention.

As shown in fig. 1-3, an electronic fire extinguisher of an electric hoist comprises a motor 8 and a speed reducer 7, a winding drum 9 is connected between the motor 8 and the speed reducer 7, a rope guider 10 is arranged outside the winding drum 9, a U-shaped stop block 1 is fixed on the upper portion of the rope guider 10, the U-shaped stop block 1 is located between sensors, the sensors are connected with an electronic module, the electronic module comprises an electronic module A4 and an electronic module B5, the electronic module A4 and the electronic module B5 are respectively connected with a lower limiting sensor 3 and an upper limiting sensor 2 of the sensors, and the forward and reverse rotation on-off of the motor 8 can be controlled by the sensing of the sensors to the U-shaped stop block 1, so that the ascending and descending of a main hook 6 can be stopped.

Lower limit sensor 3's negative pole and switch are connected with electronic module A4's contact KA1 and contact KA2 respectively, lower limit sensor 3's positive pole and contact KA1, contact KA2 and power are connected, when lower limit sensor 3 sensed U type dog distance and is less than 10mm, change the normally closed by normally opening between lower limit sensor's switch and the positive pole, contact KA1, contact KA2 becomes normally open by the normally closed, the power disconnection, motor 8 stall, reel 9 stall, main hook 6 stops to descend.

The negative pole and the switch of last spacing sensor 2 are connected with electronic module A4's contact KA3 and contact KA4 respectively, the positive pole and contact KA3 of last spacing sensor 2, contact KA4 is connected with the power, when last spacing sensor 2 senses U type dog distance and is less than 10mm, change normally to the normal close by normally opening between last spacing sensor 2's switch and the positive pole, contact KA3, contact KA4 is normally opened by normally closing, the power break, 8 reversal stop rotations of motor, 9 stall of reel, main hook 6 stops to rise.

The sensor is a Beijiafu NBB20-L2-E2-V1 inductive sensor, the sensing distance of the sensor is 11-13mm, and the distance of the sensor can be set according to actual conditions.

The input of the electronic module A4 is connected with an external main hook reverse rotation contactor, the output of the electronic module A4 is connected with a motor, the input of the electronic module B5 is connected with an external main hook forward rotation contactor, the output of the electronic module B5 is connected with the motor, and forward rotation and reverse rotation of the motor 8 are driven by the electronic module A4 and the electronic module B5.

The sensor is installed on electric block's shell body, and distribution reel 9 both sides, main hook 6 with pass through rope 11 and rope guide 10 and connect, and rope 11 is worn out and is connected with main hook 6 in the spacing hole 1-1 of rope guide 10 side, U type dog 1 and sensor are on same horizontal plane, and the sensor can in time perceive the position distance of U type dog 1.

The working principle is as follows: when the main hook 6 needs to descend, the motor 8 rotates reversely, the winding drum 9 is driven to rotate reversely, the random rope 11 is released around the winding drum 9, the main hook 6 descends immediately, when the rope 11 is released on the winding drum, the rope guider 10 is close to the lower limiting sensor 3, when the distance between the U-shaped stop block 1 on the rope guider 10 and the lower limiting sensor 3 is smaller than a set value (10 mm), the normally open state between the switch and the positive pole of the upper limiting sensor 3 is changed into the normally closed state, the normally closed state is changed into the normally open state for the contacts KA1 and KA2, the power supply is disconnected, the positive motor 8 stops rotating, the main hook 6 stops descending, and vice versa.

Claims

1. The utility model provides an electric block's electron ware of cutting off firearms, includes motor and speed reducer, be connected with the reel between motor and the speed reducer, the reel is equipped with rope guide, its characterized in that outward: the rope guide device is characterized in that a U-shaped stop block is fixed to the upper portion of the rope guide device and located between the two sensors, the sensors are connected with the electronic module, the electronic module comprises an electronic module A and an electronic module B, and the electronic module A and the electronic module B are connected with a lower limiting sensor and an upper limiting sensor of the sensors respectively.

2. The electric fire extinguisher of the electric hoist as claimed in claim 1, characterized in that: the negative pole and the switch of lower limit sensor are connected with contact KA1 and contact KA2 of electronic module A respectively, the positive pole and contact KA1, contact KA2 and the power of lower limit sensor are connected.

3. The electronic fire extinguisher of the electric hoist as claimed in claim 1, characterized in that: the negative pole and the switch of the upper limiting sensor are respectively connected with the contact KA3 and the contact KA4 of the electronic module B, and the positive pole of the upper limiting sensor, the contact KA3 and the contact KA4 are connected with the power supply.

4. The electronic fire extinguisher of the electric hoist as claimed in claim 1, characterized in that: the sensor is a Beijiafu NBB20-L2-E2-V1 inductive sensor, and the sensing distance of the sensor is 11-13mm.

5. The electric fire extinguisher of the electric hoist as claimed in claim 1, characterized in that: the input of the electronic module A is connected with an external main hook counter-rotating contactor, the output of the electronic module A is connected with a motor, the input of the electronic module B is connected with an external main hook counter-rotating contactor, and the output of the electronic module B is connected with the motor.

6. The electric fire extinguisher of the electric hoist as claimed in claim 5, characterized in that: the sensor is installed on the shell body of the electric hoist, two sides of the winding drum are distributed, the main hook is connected with the rope guide through a rope, the rope penetrates out of a limiting hole in the side edge of the rope guide and is connected with the main hook, and the U-shaped check block and the sensor are located on the same horizontal plane.