一种抗偏载的油压机主缸

Abstract

本实用新型涉及油压机技术领域，尤其涉及一种抗偏载的油压机主缸，包括缸底、缸筒、导向杆和主活塞，缸筒连接于缸底，缸底设置有第一滑动腔，缸筒设置有与第一滑动腔连通的第二滑动腔，第一滑动腔内设置有导向铜套，导向杆滑动连接在导向铜套内，导向杆可拆卸地连接于主活塞，主活塞滑动连接于第二滑动腔内且能够向下伸出缸筒外部；导向杆和导向铜套之间的间隙小于主活塞与缸筒之间的间隙，使得油压机主缸承受偏载时，导向杆和导向铜套的接触程度大于主活塞与缸筒之间的接触程度，由导向杆和导向铜套的接触来抵抗偏载。基于上述的设置，若导向杆或导向铜套出现磨损时，无需整体更换，仅需更换导向杆或导向铜套即可，降低了维护成本和缩短了维护时间。

Claims

1. An anti-tilt load oil press master cylinder, characterized by: The cylinder includes a cylinder bottom (1), a cylinder barrel (2), a guide rod (3), and a main piston (4). The cylinder barrel (2) is connected to the cylinder bottom (1). The cylinder bottom (1) is provided with a first sliding cavity (11). The cylinder barrel (2) is provided with a second sliding cavity (21) that communicates with the first sliding cavity (11). A guide copper sleeve (5) is provided in the first sliding cavity (11). The guide rod (3) is slidably connected in the guide copper sleeve (5). The guide rod (3) is detachably connected to the main piston (4). The main piston (4) is slidably connected in the second sliding cavity (21) and can extend downwards out of the cylinder barrel (2). The gap between the guide rod (3) and the guide copper sleeve (5) is smaller than the gap between the main piston (4) and the cylinder (2), so that when the main cylinder of the hydraulic press is subjected to an off-center load, the contact degree between the guide rod (3) and the guide copper sleeve (5) is greater than the contact degree between the main piston (4) and the cylinder (2), and the off-center load is resisted by the contact between the guide rod (3) and the guide copper sleeve (5).

2. The anti-unloadable oil press master cylinder according to claim 1, characterized by: The outer periphery of the guide rod (3) is provided with a wear-resistant layer.

3. The anti-unloadable oil press master cylinder according to claim 1, characterized by: The cylinder barrel (2) and the cylinder bottom (1) are detachably connected. The cylinder bottom (1) is a carbon steel plate structure and the cylinder barrel (2) is a forged steel structure.

4. The anti-unloadable oil press master cylinder according to claim 3, characterized by: The cylinder bottom (1) is provided with a concave annular groove (12) that fits into the cylinder barrel (2). The cylinder barrel (2) is embedded in the concave annular groove (12). A first sealing ring (13) is provided between the inner wall of the cylinder barrel (2) and the groove wall of the concave annular groove (12).

5. The anti-unloadable hydrolic press master cylinder according to claim 1, characterized in that: The guide rod (3) is provided with a first connecting hole (31) that passes through the guide rod (3), and the main piston (4) is provided with a screw hole (41) corresponding to the first connecting hole (31). A connecting screw (6) is provided that passes through the first connecting hole (31) and is screwed into the screw hole (41) so that the guide rod (3) is connected to the main piston (4).

6. The anti-eccentric load hydraulic press main cylinder according to claim 5, characterized in that: The main piston (4) is provided with a positioning groove (42), and the guide rod (3) is provided with a positioning block (32) that fits into the positioning groove (42). The positioning block (32) is embedded in the positioning groove (42), and a second sealing ring (33) is provided between the groove wall of the positioning groove (42) and the side wall of the positioning block (32).

7. The anti-unloading oil press master cylinder according to claim 1, characterized by: The guide rod (3) is fitted with a pressure ring (7), which is connected to the cylinder bottom (1). The pressure ring (7) presses the guide copper sleeve (5) into the first sliding cavity (11).

8. The anti-unloadable hydrolic press master cylinder according to claim 7, characterized in that: The first sliding cavity (11) is provided with an enlarged diameter cavity (111), and the guide copper sleeve (5) is provided with an enlarged diameter section (51). The enlarged diameter section (51) is located in the enlarged diameter cavity (111), and the pressure ring (7) presses the enlarged diameter section (51) into the enlarged diameter cavity (111).

9. The anti-unloadable hydrolic press master cylinder according to claim 8, characterized in that: A third sealing ring (71) is provided between the pressure ring (7) and the inner wall of the expansion cavity (111), and a fourth sealing ring (72) is provided between the pressure ring (7) and the guide rod (3).

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