Hydraulic jack is composed of several main components: cylinder block, piston rod, saddle, sealing ring, retaining ring, guide ring, female joint and so on.After the factory produces the parts, it is necessary to assemble and form the parts.At ordinary times, when we clean and maintain the jack, we will first disassemble the parts and then assemble them.Here is the first to learn to jack assembly.Here we will introduce how to assemble in detail.
First of all, we have to learn how to assemble the drawing of car mechanicals all tools and trolley hydraulic jack . Since the drawing is only the line representation or symbol representation of the physical object, how to read these symbols can we see the assembly drawing.
The drawing method should follow certain rules. We sum up three points:
1. The lifting surface (or matching surface) of the two parts is represented by a contour line;Non-contact surfaces are represented by two contour lines.
2, the same part of the section line direction and interval should be consistent;Section line separation of adjacent parts (changing direction or spacing).
3. For solid bars and standard parts (such as bolts), when the cutting plane is cut through its axis or symmetry plane, only the shape of these parts is drawn.
For special requirements, we express them in a special way:
1, disassembly drawing
2. Cutting drawing along the joint surface
3. Represents a part alone
4, exaggerated painting thin section parts, small gap exaggerated painting.
5. False drawing: adjacent parts are drawn with double dot lines.
6. Expanding drawing: the spatial structure is unfolded on the plane.
7, simplified painting: process structure (fillet, chamfer, etc.) can not be painted.
After learning how to read the assembly drawings of hydraulic jacks, we began to enter the assembly stage.
Must first assembly of mechanical jack plactforms seals, installation of hydraulic jack seals, everywhere for sealing with directional note don’t make a mistake the assembly direction of seal, the seal to the difficult to assembly using guide assembly tool assembly seal, it is forbidden to use screwdriver into hard top, nine times out of ten want to break the seal, so be careful not to twist twist when assembly;Then is the assembly of hydraulic jack piston and piston rod, piston and piston rod assembly, should be put on the two V-shaped block, with the dial gauge side measure its coaxiality error and straightness error on the full length;Finally, install the hydraulic jack cylinder. When the hydraulic cylinder is installed on the main engine, adjust the hydraulic cylinder according to the guide rail or the mounting surface, so that the axis line of the hydraulic cylinder is parallel to the mounting surface of the guide rail. It is recommended to shovel and scrape for correction, but not to pad the copper sheet.
Special attention should be paid to the careful operation of all links in the assembly process, which is the legendary meticulous hand.When you need to force, the force should be used properly, and you can’t use brute force. Eventually, the thread and surface are hurt, and the loss outweighs the gain.
All right, so that’s all we have to say about how to assemble hydraulic jacks. If there are any omissions, please point out that we will accept them humbly.
Post time: Jun-10-2021