The whole assembly process of four-column hydraulic press

In the first step, we must first support the welded and painted slider in the air. The height of the suspension should be controlled to about one meter. At least two pads should be used below to ensure the stability of the slider and prevent it from overturning easily. Large slides Some blocks weigh up to seven or eight tons. After the slide block is lifted and stabilized, we install four columns. When installing the columns, you must pay attention to the fact that the columns are divided into upper and lower columns. Before installation, mark which end is up and which end is down. When hoisting, be careful to protect the threads on the top of the column from collision. Before installing the column, install the locking nut on it first. Firstly, there will be a place for the board to be tied when hoisting. Secondly, when installing the beam in the future, there is no need to install the locking nut on it. This can improve work efficiency and reduce the risk to personnel installing on top. The order of installing the columns is to install them diagonally. The purpose of this installation is to consider the balance and prevent them from overturning easily. Before hoisting the piles, the four landing points under the columns must be protected and padded with cork to prevent them from poking the cement floor. After all four columns are installed on the sliders, use a crane to hoist the columns for installation. When sliding open the four holes, be sure to pay attention because they are all collisions between iron and iron. Be careful and do not remove the parts on the columns. If the threads are damaged or bent, it is best to use cork pads under the columns to prevent the threads under the columns from colliding with the cement floor and causing damage to the threads. This photo is after the installation of the four columns.
The general four-column hydraulic press has a lower top cylinder. Then we hoist the prepared lower top cylinder and install it directly under the workbench. For this installation, we just simply hoist it and put it in place inside the workbench. We cannot fix it immediately. . There are two differences here. If the height of the workbench is higher than the height of the lower top cylinder, we can install it so that it cannot be touched during installation and transportation. If the workbench is shorter and the column below is longer, this way During installation and transportation, the lower ejector cylinder will extend out of the workbench, which is easy to be touched during installation, hoisting and transportation. Therefore, when the height of the workbench is less than the length of the lower ejector rod, it cannot be installed on site. It must be During installation during debugging, after installing the lower jack cylinder under the workbench, place the four locking nuts next to the workbench, and wait until the four upright columns and sliders are hoisted directly above the workbench. When tying, you must pay attention. The four columns and the slider must be hoisted in a very positive position, that is to say, they must be horizontal. In this way, we ensure that the four columns are on the same plane and slowly inserted into the four holes of the workbench. go.
First, we hoisted the slider and moved it directly above the workbench. The crane slowly descended. At this time, at least two staff members were required to stabilize the four columns. The locking nuts should be placed at the bottom of the four columns. Slowly Slowly descend. Of course, the slider cannot be absolutely level when hoisting it. The staff needs to continuously swing back and forth and slowly descend. When the four locking nuts are set on the column, slowly descend again. When the slider is in place From now on, we will fix the 8 nuts on the top and bottom of the 4 corners of the workbench. After it is fixed, as the fishhook slowly falls, the slider also moves downward, because the slider has neither support nor locking nut to block it at this time. At this time, a one-meter-long steel pipe can be prepared to hold it. Slider, so that the workbench and slider are installed.
The next task is to install the upper beam. The installation of the upper beam is also technically difficult. First of all, when hoisting, the absolute level of the upper beam must be ensured, and the four holes of the upper beam must accurately cover the tops of the four columns. , and then slowly move down to the 4 locking nuts that have been installed, and then tighten the 4 locking nuts at the top of the 4 columns, so that the upper beam is installed.