Manual of BZ type fixed column jib crane

An overview of the manual of the BZ fixed-column jib crane

I. Overview of the manual of the BZ fixed-column jib crane

The BZ fixed-column jib crane is a special lifting equipment designed according to user needs. It has the advantages of novel, reasonable and simple structure, convenient operation and use, flexible rotation, and large working space. It is an energy-saving and efficient material lifting equipment. It can be widely used in production lines, assembly lines and machine tools in factories, mines and workshops, as well as in warehouses, docks and other occasions for heavy lifting.

This machine is composed of a column, a rotary arm and an electric chain hoist. The lower end of the column is fixed on the concrete foundation, and the swing arm rotates, which can be rotated according to user requirements. The slewing part is divided into manual slewing and electric slewing (the cycloidal pinwheel reducer is installed and the upper or lower pallet drives the rotating tube to rotate the arm). The electric chain hoist is installed on the jib track for lifting heavy objects.

2. The BZ fixed-column jib crane Main technical parameters and dimensions

1. Main technical parameters

2. Dimensions:

3. The performance parameters and dimensions

of the electric chain hoist: see the attached electric hoist "Operation and Maintenance Manual".

3.The BZ fixed-column jib crane structure and operation

• This machine is mainly composed of four parts: swing arm device, column device, slewing device and electric chain hoist. (See Figure 1)
• The electric chain hoist has the functions of lifting and running back and forth on the beam.
• The cantilever beam can be driven by the reducer on the slewing device to drive the rollers for slewing motion.
• The electrical part is shown in the attached drawing: electrical principle and electrical wiring diagram. The electrical control box is installed on the chain hoist.
• The operation of this machine is realized through the flashlight door button. There are eight buttons on the flashlight door, which control the fast rise, fast fall, slow rise, slow fall, left and right rotation and the horizontal movement of the hoist trolley.

note:

1.  Do not press the fast and slow button and the reverse button of the same motor at the same time during operation
2.  When working, it is forbidden to stand under the boom.
3.  It is forbidden to drag and lift heavy objects.
4.  Over-load lifting is prohibited.

4. lifting

For the convenience of transportation, the machine is disassembled and packaged, and the user installs it by himself according to the method introduced in this book (see "Five" installation)

The lifting methods of beams and columns are shown in Figure 2 and Figure 3.

5.The BZ fixed-column jib crane installation

Before installation, check the product and technical documents according to the packing list for any loss of life, bending and torsion deformation of the arm beam, and corrosion of the shaft during transportation. Bumps should be corrected or restored separately, and rotating parts such as shafts and bearings should be cleaned and lubricated every six months.

1. Column installation should keep the column vertical to the ground. The anchor plate screws should be tightened firmly without any looseness. The floor and the foundation should fit well. If equipped with an electric hoist, the foundation should be embedded with cables and grounding facilities. The cable is led out from the center of the foundation, and the grounding resistance shall not be greater than 4 ohms.

2. Installation of jib beam

For the installation of the jib beam, please proceed in the following order.

1.  First hoist the beam horizontally. (Figure II)
2.  Connect the slewing device to the jib beam. (Picture 5) Install the reducer.
3.  Install an electric hoist and a walking trolley on the jib beam track. (The installation method is strictly in accordance with the "Operation and Maintenance Manual" attached to the electric chain hoist)
4.  Install a C-shaped track on the top of the beam. There is a self-made sliding trolley in the C-shaped track, and it should be on the same side as the electrical control box on the electric chain hoist.
5.  Connect and install all electrical appliances on the beam, and leave power cords of appropriate length. (See electrical schematic diagram and electrical wiring diagram for wiring). The C-shaped track trolley and the cable are tied and fixed with binding wires.

After the above steps are completed, the integral hoisting of the jib beam can be carried out.

When hoisting, after lifting according to the lifting method specified in Figure 2, align the shaft with the bearing hole on the top of the column, and slowly lower the roller against the raceway of the column. After adjusting the proper position, use the washer, round nut and round nut non-return washer to fix the shaft through the side hole on the upper part of the column. Then drag the slip ring with one hand, pass the side hole on the upper part of the column, and set it on the beam shaft. (See Figure 6)

Then, connect the wires hanging from the perimeter of the beam to the terminal on the collector ring, and connect the carbon brushes to the power switch at the lower part of the column with wires, and finally fix the carbon brush holder on the inner wall of the column. Adjust the sliding plate to keep good contact with the copper ring on the collector ring. Turn on the power and start the test run.

note:

1.  When installing the slip ring and other components in the column, take necessary measures (such as tying it with a rope in advance) to prevent accidentally falling into the column.
2.  If the machine is installed and used outdoors, reliable rainproof measures should be installed.

After assembly and assembly of the swing arm beam and column, it should be ①The rollers and the raceway should fit well, ②The swing arm can rotate 360° around the column flexibly, ③Adjust the adjustment shims so that the end of the swing arm beam reaches the upper deflection ≥ R/250 (R is the radius of gyration).

6.The BZ fixed-column jib crane Test run

After all the installations are completed, the test run can be carried out.

Before the test run, add 30# mechanical oil into the rotary reducer to the middle position of the oil standard (change the oil once every six months).

During the test run, first press the buttons to check whether the running direction is consistent with the indicator symbol of the flashlight door. If not, you can adjust the consistency.

No-load test: The electric hoist should run smoothly when running left and right on the beam and lifting up and down, and the jib beam should be flexible and stable when rotating, and should stop at any position so as not to slip by itself, and the outer end has a certain upper deflection F ≥ R/250 (R is the radius of gyration).

Rated load test: Under the condition of rated load, the crane hook is at the extreme position of the farthest away from the column to lift heavy objects and perform a 360° rotation (electric or manual). More than F≥R/125mm.

In order to prevent accidents caused by operation failure, a switch that can cut off the power supply in an emergency must be installed near the crane. The crane cable should use the YZ-500V medium-sized rubber cable specified by JB678-77 (one of which is grounded, so four Core cable).

7.The BZ fixed-column jib crane Use and maintenance

1.  The operator should strictly abide by the crane operating regulations, and overload usage is not allowed.
2.  It is not allowed to use the terminal baffle as a normal parking method.
3.  The chain or steel rope used to tie the heavy object must have sufficient strength and be tied firmly and reliably. The rope or chain should be lined at the acute corner of the heavy object. The rope set on the crane must not be in the center of the hook. Will slip out.
4.  The lifting and moving of heavy objects should be carried out in a vertical situation. It is forbidden to use electric hoist to drag or forcibly lift buried heavy objects, and it is also not allowed to rotate the crane to carry out drag and impact work.
5.  It is strictly forbidden to stand on top of lifting heavy objects and pedestrians underneath.
6.  When finishing work or resting, heavy objects should not be suspended in the air.
7.  Lubricating oil should be added to the rotating parts every six months.
8.  According to the situation after use, regularly brush off the accumulation of the rack beam and the lower wing surface of the rotating part beam (at the walking track), and the rack paint can be repainted or repainted if it can be peeled off.