The patented portable crane (small crane) is a kind of small mechanical equipment with excellent performance and wide application. It is suitable for hoisting high-rise buildings such as various building materials and decoration materials, especially slender materials such as wooden boards and joinery boards that are inconvenient to carry in corridors, and has its unique advantages. At the same time, it can also be used for loading and unloading large workpieces such as production lines and warehouses in mechanical processing workshops, power plants and food factories, and lifting household items.
Edit the structural principle of this small crane.
The small crane consists of two parts: the power unit and the support. 1. The power unit consists of motor, reducer, clutch, brake, rope drum and steel rope. The motor is a paramagnetic single-phase capacitor motor with a power-off braking mechanism; The motor is also equipped with a thermal switch to prevent the motor from overheating and burning; The reducer is a two-stage gear reducer and is fixedly connected with the motor; Clutch, brake and flying tube are integrated, but when the clutch is in the disengaged state, it can realize rapid descent, and the descent speed can be controlled by operating the brake to avoid impact. The round hole in the front of the power plant shell can be used to install the blower, and the user can equip the blower for forced cooling as required. The shell itself has a toolbox, which contains a clutch handle, a special wrench with a brake handle, a jack nut washer, a rod top cap, a button starter, a travel switch, wires and instructions. 2. The bracket consists of a main rod and a rotating arm, and the rotating arm consists of a screw, a jack nut and a vertical rod. The rotating arm can rotate 360 degrees on the main rod, and the end of the arm is provided with a travel switch to prevent lifting accidents caused by operation errors or button failure. The forward and reverse rotation of the motor can be realized by operating the button starter, and the winding and release of the steel wire rope can be realized, and the operation of lifting the object can be completed through some pulleys of the bracket.
Edit the main features of this small crane.
1, the small crane is easy to carry. Small crane series products are small in size, light in weight, small and exquisite, compact in structure and easy to carry. This small crane is easy to install. Put the power unit near the window (or balcony), assemble the bracket part, insert it into the base hole of the power unit, and it can be installed in 5 minutes. 3. The lifting speed of the small crane is fast, and it can reach 1 m in 4 seconds and swing back and forth to 10 floor in 3 minutes. With the help of "special tools", the lifting speed is amazing, and the higher the floor, the greater the advantage. 4. Small cranes widely use 220v single-phase power supply, which is used in decoration companies, lifting companies, installation companies, moving companies, factory workshops, repair departments and warehouses. At the same time, it also has a wide range of use places, which can be installed indoors and on the roof, on large construction sites with the help of horn racks, or on small construction projects instead of gantry cranes. You can install protective nets and billboards, and you can also do waterproof cast-in-place projects on the roof; Can repair wells and pumps, store fruits and dry grains ... 5. This small crane is simple to operate, safe and reliable. You can learn to operate this machine in an hour. When the operation according to this manual occurs, the suspended object touches the stop and toggles the travel switch, and the power supply will be cut off immediately, thus ensuring safe operation.
Edit the installation of small cranes in this section.
Choose a location convenient for installation and operation, and fix a piece of 300× 120×30 hard miscellaneous wood on the top cap of the rod. If the bottom surface of the installation machine is smooth, install it when the power box gasket is needed. 1. Place the power box near the window or balcony (if the ground is smooth, the lower part of the power box should be padded with a flexible pad). 2. Assemble the bracket parts (1) and put the washer of the jack nut on the jack nut; (2) insert the force rod on the screw; (3) the bearing is on the upright clamp; (4) mounting the rotating arm on the vertical rod bearing; (5) Install the top cap of the vertical pole with wooden board at the top of the vertical pole. 3. Insert the installed bracket into the hole of the base of the power box. 4. Add proper amount of lubricating oil to the thread, and then tighten the1000kg nut. (Note: The main pole of the bracket must be perpendicular to the ground. 5. Adjust the height of the rotating arm to make its position appropriate, and then adjust the length of the wire rope of the arm to adapt to the suspended object. 6. Turn the clutch to the disengaged state with the clutch handle, take out the wire rope from the power box, loosen the spiral rope locks on the two pulleys, pass the wire rope through the two pulleys on the bracket, and lock the wire rope locks. 7. Take out the power cord, button starter and travel switch, and install the travel switch in the arm end fixing box. 8, electricity empty load test run, check whether the start switch is flexible, limiter, travel switch is reliable.
Edit the use of small and medium-sized cranes in this paragraph.
After the machine is installed, one person can carry out lifting operation from top to bottom. The following two points should be paid special attention to during use: 1. Tighten the jack nut again after the first lifting. In the future crane operation industry, it is also necessary to check whether the nut is loose. 2. Clutch engagement and disengagement must be carried out under no-load condition, and the stroke should be guaranteed to be zero. 3. It is not allowed to slip off the clutch with load. 4. The travel switch is used as a safety limit and cannot be used frequently instead of the working switch. 5. During hoisting operation, the upper and lower personnel should cooperate closely, and it is forbidden to stand under heavy objects during hoisting.
Maintenance of small crane
1, wire rope winding should be neat, dense and tight, and regularly check its wear and tear, if there is any problem, it should be replaced immediately. 2, stop, should be in no-load state, can't let heavy objects stay in the air for a long time. 3, in use, should always check the equipment for abnormal sound. 4. When the motor brake stops and slides, the fan cover and blades can be removed. Open the back cover and put a suitable washer under the automatic spring. 5, cumulative use of 500 hours should be a maintenance, clean up dirt, add grease, adjust the fastening bolts.
In this section, edit the common faults and troubleshooting methods of small cranes.
Troubleshooting methods for main causes of common faults: press the start button, the motor does not turn 1, the wiring is broken or loose 1, the wiring is repaired, the switch is invalid, the switch is repaired or replaced, the capacitor is burnt out, the capacitor is replaced, the limiter is not reset or the travel switch is invalid, the limiter or the travel switch is repaired 1, and the brake pad is worn/kloc-. Failure to adjust the brake pad gap or replace the motor brake 2. Brake spring is broken 2. Brake spring is replaced 3. The brake pad is heavily oiled 3. The motor for cleaning the brake pad is too noisy to lift heavy objects 1, the power supply voltage is too low 1, the voltage is normal 2. The capacitor is damaged 2. The capacitor is replaced 3. The brake pad is not completely disengaged 3. The braking force of the foot brake for adjusting the brake pad gap is too small 1, and the pin slips. Kloc-0/, reinstallation 2, broken brake band 2, replacement of brake band 3, worn brake band 3, pin replacement socket machine noise 1, poor lubrication 1, damaged gear and bearing 2, check and replace gear or bearing 3, and reinstall it if the forward and rotating bodies are not installed.
Open classification:
Small crane, portable crane, mini crane, mini crane, electric crane.