What is the content of the crane's regular inspection?

(1) Weekly inspection

A. Regular inspections are carried out every week. The problems found in the inspections should be dealt with mainly by the driver, and those that cannot be dealt with by the driver will be handed over to the maintenance team for treatment.

The content of the weekly inspection of B;

a Inspect and clean according to the contents stipulated in the daily inspection system.

b Check the contactor, the dynamic contact of the controller contact and the damage of the contact surface.

C Check the operation of the transmission mechanism of the controller.

d Check the coupling of the coupling and the tightening of the screws.

e Check the wear of the brake shoes.

f Check the wear of the wire rope.

g The hoisting mechanism of double brakes and the magnitude of the braking torque should be checked.

h Check the condition of the buffer, limit stopper, and rail end stopper.

(2) Monthly inspection

A monthly inspection is attended by drivers and maintenance personnel

Contents of monthly inspection:

a. Check according to the content specified in the weekly inspection, and carry out cleaning and lubrication work according to the regulations.

b Check the motor, reduction gear, bearing support. Tightening of base screws such as angle bearing housings.

c wear of electric and carbon brushes, the pull-in of brake electromagnets and the integrity of resistors;

d Wear of the wire insulation at the wire notch or the steel pipe mouth,

e Lubrication of each travel switch and safety switch shaft;

f The tightening condition of the screw of the wire rope pressure plate and the lubrication condition of the wire rope,

g The wear and lubrication of the pulley grooves of the lubricating group;

h The quantity and quality of the lubricating oil in the reducer

iConducting device wiring.

(3) Semi-annual inspection

A. The inspection is carried out according to the content specified in the monthly inspection, which can be carried out in combination with the secondary maintenance or the intermediate repair.

B added inspection content:

a Check the control panel, controller, protection cabinet, resistors, travel switches, safety switches, contactors, relays and all wiring sockets. The tightening of the wiring screws, and tighten them one by one;

b insulation of all electrical equipment;

c Check the static and dynamic suction surfaces of the electromagnet, remove the dirt, and check the integrity of the short-circuit ring;

d grounding device situation;

e tightening of the end beam screws, and tighten them one by one,

f Brake electromagnet cylinder lubrication, hydraulic brake electromagnet oil quantity and oil quality.

g Check and adjust the braking torque of the brake, the travel of the magnet, the problem of the Ava and the brake wheel;

h Replace damaged mechanical parts and electrical components according to relevant regulations.

(4) Annual inspection

A Check according to the content specified in the semi-annual inspection, and carry out lubrication work at the same time.

B. Check whether the welding seam of the metal components of the large and small frame is welded and corroded, and whether there is fatigue crack in the stress and stress concentration parts.

C Check whether the railings, safety guardrails, and conductive support frames are in good condition;

The wear condition of the wheel of the D size car.

EDetect the difference in the span of the trolley track.

F Check the span difference of the cart track.

G measure the static camber of the bridge (main beam).

H hoist 1.25 times the rated weight, and after 15 minutes of static hoisting, measure the drop and side camber of the main beam. (The hanging object should be hung in the center of the bridge)

I hoist 1.1 times the rated weight to test run the trolley and cart, test the brakes and their running conditions.

J Replace damaged mechanical parts and electrical components according to relevant regulations.