Double-prestressing force steel wire winding type pressing machine

Abstract

The invention discloses a double-prestressing force steel wire winding type pressing machine. The pressing machine comprises a framework composed of an upper cross beam, a base and an upright post, a housing oil tank arranged above the framework, and a main oil cylinder component arranged at the middle part of the framework, wherein the interval strengthening ribs are respectively arranged in the upper cross beam and the base; prestressing force steel wires are respectively wound on the left and the right side of the framework so as to tighten the framework as a whole. Compared with the prior art, the pressing machine has the benefits that 1, the structure of interval strengthening ribs is adopted, the distribution of working load on the framework is facilitated when the pressing machine works, the overall rigidity and strength of the framework can be greatly improved, and the pressing machine weight is also greatly reduced; 2, the cast manufacturability is good, the stress condition is far better than a connecting part of a plate frame type pressing machine under the same unbalanced loading; 3, the structure is simplified, the material is saved, the whole aesthetic appearance is concise, and the using is safe and reliable.

Description

Technical field [0001] The invention relates to a steel wire winding type press, belonging to the technical field of press equipment, in particular to a double prestressed steel wire winding type press with an improved structure. Background technique [0002] The frame of the traditional prestressed steel wire winding press changes the stress state of the whole frame through the prestressed winding steel wire layer, so that it has a high fatigue strength, but its weight is relatively heavy, especially in large tonnage and wide platform The production cost is relatively high when used on the press; secondly, there are shortcomings in the layout of the fuel tank of the press. The current layout has two types: internal and external: Figure 1a , 1b Shown is the built-in fuel tank. This structure has an impact on the rigidity and strength of the upper beam, and subsequent castings of the internal fuel tank are sanded, polished, and glued, and other processes are many and difficult, and...

AI Technical Summary

Problems solved by technology

[0002] The frame of the traditional prestressed steel wire wound press changes the stress state of the entire frame through the prestressed wound steel wire layer, so that it has high fatigue strength, but its weight is relatively heavy, especially in large tonnage and wide table The production cost is relatively high when used on a press; secondly, there are deficiencies in the layout of the oil tank of the press. Currently, there are two types of layout: built-in and external: Figure 1a , 1b The fuel tank is shown as built-in. This structure affects the stiffness and strength of the upper beam, and the subsequent castings of the internal fuel tank have many and difficult processes such as sand cleaning, grinding, and scraping, and the cleanliness is difficult to guarantee; Figure 2a , 2b The fuel tank is shown externally. Due to the large difference in thickness of the upper beam of this structure, the casting process is poor, so it is easy to have internal defects, and the liquid filling channel has to bend, which is not as smooth as the liquid filling directly above.

[0003] On the other hand, if Figure 3a , 3b The traditional plate-and-frame press is shown. The frame of the traditional plate-and-frame press is light in weight, and the layout of the oil tank and its liquid filling are also reasonable. The guide device can be hidden on both sides of the press frame, so the appearance is simple , but the load-bearing direction of the frame is not pre-tightened, so the alternating stress is relatively large when the frame is working, and there are many large stress concentration points when the frame is working, which is much inferior to the prestressed winding structure in terms of fatigue resistance design, so High requirements are placed on the material of the frame; moreover, this structure is more sensitive to the eccentric load when the press is working, so the thickness of the oil circuit board and the bottom plate at the upper and lower ends of the inner side of the frame is much larger than that of the wire wound press ( Figure 3b h1' and h2' in the Figure 1b , 2b h1 and h2) in order to disperse the eccentric load as much as possible. For the same reason, the joints between the front and rear plate frames and the front and rear plate frames (may be welding, or tension rods) are easy to break when the eccentric load of the press is large. , so the requirements for the material and connection process of the connection part are also very high

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