CN212387596U

CN212387596U - Limiting device for disc brake of crane

Info

Publication number: CN212387596U
Application number: CN202021542228.0U
Authority: CN
Inventors: 高大伟; 张梨; 陈雷; 马健
Original assignee: Tianjin Jinan Heavy Equipment Co ltd
Current assignee: Tianjin Jinan Heavy Equipment Co ltd
Priority date: 2020-07-30
Filing date: 2020-07-30
Publication date: 2021-01-22
Anticipated expiration: 2030-07-30

Abstract

The utility model discloses a stop device for hoist disc brake installs on hoist disc brake, include the fixed bolster and install proximity switch on the fixed bolster, proximity switch pass through lock nut with the relative position of fixing at hoist disc brake's electromagnetism push rod head is connected to the fixed bolster, proximity switch passes through signal transmission line and is connected with the programmable logic controller of hoist to the position signal who will detect the electromagnetism push rod conveys programmable logic controller. The utility model discloses install on the stopper body, guarantee and the stopper does not have the displacement, through the actual position who detects stopper electromagnetism push rod to judge the actual operating condition of stopper, with the stopper braking or loosen signal transmission to programmable controller in, improved the stopper braking greatly or the accuracy of loosening, can effectively improve crane equipment's safe operating performance.

Description

Limiting device for disc brake of crane

Technical Field

The utility model relates to the technical field of machinery, especially, relate to a stop device for hoist disc brake.

Background

In various cranes, a hoisting system comprises a driving motor, a speed reducer, a (disc) brake, a winding drum, a steel wire rope and the like, the hoisted objects are lifted and lowered by the forward and reverse rotation of the driving motor, the goods are stopped at the required height by the braking of the brake, and the brake and the driving motor are required to work and interlock when the crane is started or stopped. When the hook is started, the power supply of the driving motor is switched on and reaches the set torque, the brake is released (in a non-braking state), the hung object ascends or descends, when the hook is stopped, the driving motor is powered off after the brake reaches the set torque, the hung object stops moving, and the phenomenon of hook slipping is avoided through the sequential control and the torque detection.

In the traditional method, a programmable controller and an encoder are mostly adopted to realize the starting sequence of a driving motor and a brake, but when the brake is braked or loosened abnormally, the hung object slips off a hook or the driving motor is damaged by overload easily, so that great potential safety hazards exist.

SUMMERY OF THE UTILITY MODEL

The utility model aims at the technical defect who exists among the prior art, and provide a stop device for hoist disc brake, with disc brake braking or loosen the signal and gather, realize disc brake's braking or loosen state feedback to programmable controller, play double protection, will effectively improve crane equipment's stability, reliability, realize the absolute safety of equipment hoist and mount.

For realizing the utility model discloses a technical scheme that the purpose adopted is:

a limiting device for a crane disc brake is installed on the crane disc brake and comprises a fixing support and a proximity switch installed on the fixing support, wherein the proximity switch is rotatably connected and fixed at the relative position of an electromagnetic push rod head of the crane disc brake through a locking nut on the fixing support, and the proximity switch is connected with a programmable controller of a crane through a signal transmission line so as to transmit a detected position signal of an electromagnetic push rod to the programmable controller.

The fixing support is connected with the crane disc brake through a fixing bolt and a locking gasket, flanges are formed on two sides of the locking gasket and fixed with the head of the fixing bolt and the clutch outer cover respectively, the swing generated when the brake is braked or loosened is overcome, and the whole limiting device for the heavy machine disc brake is prevented from falling and losing efficacy.

The fixing support is L-shaped and is connected with the crane disc brake through a horizontal part of the L-shaped fixing support by a fixing bolt.

Wherein, be formed with proximity switch mounting hole and fixing bolt connecting hole on the fixed bolster.

The utility model discloses install on the stopper body, guarantee and the stopper does not have the displacement, through the actual position who detects stopper electromagnetism push rod to judge the actual operating condition of stopper, with the stopper braking or loosen signal transmission to programmable controller in, improved the stopper braking greatly or the accuracy of loosening, can effectively improve crane equipment's safe operating performance.

Drawings

Fig. 1 is a side view of a limiting device for a crane disc brake according to the present invention;

FIG. 2 is a front view of a limiting device for a disc brake of a crane;

FIG. 3 is a schematic diagram of the limiting device for the crane disc brake mounted on the disc brake;

fig. 4 to 5 are front and top views of the locking washer in use.

In the figure: the device comprises a fixing bolt 1, a locking washer 2, a support 3, a proximity switch 4, a signal transmission line 5 and a locking nut 6.

Detailed Description

The present invention will be described in further detail with reference to the following drawings and specific embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.

As shown in fig. 1-3, the limiting device 7 for a crane disc brake of the present invention comprises:

fixing bolt 1, locking gasket 2, fixed bolster 3, proximity switch 4, signal transmission line 5, lock nut 6. The fixing bolt is made of low-carbon alloy steel and is fixedly connected with a threaded hole in the top of the electromagnetic shell 9 of the brake 8, so that the limiting device and the electromagnetic shell 9 of the brake 8 are relatively static, and when the electromagnetic push rod 10 moves, displacement information is accurately acquired.

Referring to fig. 4 and 5, two sides of the anti-loosening gasket are respectively fixed with the head of the fixing bolt and the electromagnetic shell of the brake through flanges 21 in different directions, so that the swing generated when the brake is braked or loosened is overcome, and the whole limiting device is prevented from falling and losing efficacy.

The fixed bolster adopts stainless steel material, and thickness is 4 millimeters, through processes such as cold working, punch a hole, guarantees proximity switch's position accuracy, overcomes the atmosphere corrosion simultaneously, improves service life.

The proximity switch is used for accurately reflecting the position of the movement mechanism when the head of the electromagnetic push rod is close to the induction area of the proximity switch, and can be operated without mechanical direct contact with a movement part, so that a position signal is transmitted to the programmable controller to provide a control instruction.

The signal transmission cable is good in elasticity, easy to install, very simple in connection mode and stable in signal transmission (the transmission distance is less than 185 meters), and accurate transmission of switching signals is achieved.

The outer peripheral surface of the locking nut is provided with a circle of groove, the locking nut is clamped and fixed in a rectangular nut mounting hole on the vertical part of the fixing support through the groove, and is in threaded connection with an external thread body outside the proximity switch through the internal thread of the locking nut, so that the relative position of the head of the proximity switch and the head of the electromagnetic push rod is adjusted, and the accurate induction of the head position of the electromagnetic push rod by the proximity switch is ensured.

Under the working state, when the hoisting mechanism of the crane is started or stopped, the position of the electromagnetic brake push rod 10 is detected, so that the real-time transmission of the working state of the brake is realized, the risks of hook slipping and abnormal starting (under the brake) are effectively prevented, and the safety and the reliability of the equipment are improved.

Before the work, at first with stop device through fixing bolt 1 with the top screw hole of the electromagnetic housing of stopper be connected, fixing bolt screws up back with locking gasket both wings perk respectively. The signal transmission line is connected to a programmable controller of the crane, whether the signal is normal or not is checked, a user adjusts the inductive position of the proximity switch according to the limit requirements of the upper position and the lower position of the electromagnetic push rod of the disc brake, the locking piece nut ensures that the proximity switch is stable, and the proximity switch respectively feeds back brake and non-brake signals when the electromagnetic push rod is adjusted to be in a working state and a non-working state.

When the disc brake is in work, the electromagnetic push rod of the disc brake rises, the brake is opened, the proximity switch feeds back a release signal to the programmable controller, and the lifting mechanism can be started. The electromagnetic push rod of the disc brake descends, the brake brakes, the proximity switch feeds back a braking signal to the programmable controller, and the lifting mechanism can stop, so that the safe operation performance of the equipment of the crane equipment is effectively improved.

The foregoing is only a preferred embodiment of the present invention, and it should be noted that, for those skilled in the art, a plurality of improvements and decorations can be made without departing from the principle of the present invention, and these improvements and decorations should also be regarded as the protection scope of the present invention.

Claims

1. The limiting device is characterized by being mounted on a crane disc brake and comprising a fixing support and a proximity switch mounted on the fixing support, wherein the proximity switch is rotatably connected and fixed at the relative position of an electromagnetic push rod head of the crane disc brake through a locking nut on the fixing support, and is connected with a programmable controller of the crane through a signal transmission line so as to transmit a detected position signal of the electromagnetic push rod to the programmable controller.

2. The limiting device for the crane disc brake as claimed in claim 1, wherein the fixing bracket is connected with the crane disc brake through a fixing bolt and a locking washer, two sides of the locking washer are respectively formed with flanges which are respectively fixed with the head of the fixing bolt and the clutch housing, so as to overcome the swing generated when the brake is braked or loosened and prevent the whole limiting device for the crane disc brake from falling and failing.

3. The limiting device for a crane disc brake as claimed in claim 1, wherein the fixing bracket is L-shaped and is connected with the fixing bolt for the crane disc brake through a horizontal portion of the L-shaped fixing bracket.

4. The limiting device for a crane disc brake as claimed in claim 1, wherein the fixing bracket is formed with a proximity switch mounting hole and a fixing bolt coupling hole.