Novel pressurizing hydraulic oil cylinder structure

Abstract

The utility model discloses a novel pressurizing hydraulic oil cylinder structure which comprises a large cylinder barrel, a small cylinder barrel, a large piston arranged in the large cylinder barrel, a piston rod connected to the large piston and a small piston 8 connected to the piston rod in a threaded mode, a large cylinder cover is fixed to one end of the large cylinder barrel, and one end of the small cylinder barrel is connected into the large cylinder cover in a sealed mode through a first sealing assembly. The other end of the small cylinder barrel is located on the outer side of the large cylinder barrel, and the small piston is movably arranged in the small cylinder barrel through a second sealing assembly. The small cylinder barrel is arranged outside, and on the premise that the sealing performance of the oil cylinder is guaranteed, the large cylinder cover can be correspondingly shortened through the structure. In the structure, the large cylinder barrel and the large cylinder cover can be made to be smaller and more exquisite on the premise that the supercharging working effect of the supercharging oil cylinder is guaranteed.

Description

Technical Field

[0001] The utility model relates to the technical field of hydraulic cylinders, in particular to a novel supercharging hydraulic cylinder structure. Background Technique

[0002] As Figure 1 shown, the traditional supercharging hydraulic cylinder uses the area difference between the large and small chambers to generate a pressure difference to play a supercharging role. In traditional manufacturing, the small chamber cylinder barrel is completely arranged inside the large chamber cylinder barrel. This structure has high manufacturing costs, complex manufacturing processes, and low assembly efficiency for the supercharging cylinder. Moreover, it is relatively heavy in weight and occupies a large space. Content of the Utility Model

[0003] Aiming at the deficiencies of the prior art, the utility model provides a novel supercharging hydraulic cylinder structure to solve the problems mentioned in the above background technique.

[0004] To solve the above technical problems, the utility model provides the following technical solutions:

[0005] A novel supercharging hydraulic cylinder structure includes a large cylinder barrel, a small cylinder barrel, a large piston arranged inside the large cylinder barrel, a piston rod connected to the large piston, and a small piston 8 threadedly connected to the piston rod. One end of the large cylinder barrel is fixed with a large cylinder head, one end of the small cylinder barrel is hermetically connected to the inside of the large cylinder head through a first sealing assembly, the other end of the small cylinder barrel is located outside the large cylinder barrel, and the small piston is movably arranged inside the small cylinder barrel through a second sealing assembly.

[0006] Preferably, the first sealing assembly includes a first sealing ring arranged inside the large cylinder head.

[0007] Preferably, the second sealing assembly includes three groups of second sealing rings arranged on the outer wall of the small piston.

[0008] Compared with the prior art, the beneficial effects of the utility model are:

[0009] The small cylinder barrel is placed outside, and on the premise of ensuring the sealing performance of the cylinder, this structure can make the large cylinder head correspondingly shorter. In this structure, on the premise of ensuring the supercharging working effect of the supercharging cylinder, the large cylinder barrel and the large cylinder head can be made more compact. In the assembly process, the assembly efficiency is greatly improved, the manufacturing cost of the supercharging cylinder is reduced, and the manufacturing period is shortened. The supercharging hydraulic cylinder structure of this structure has a smaller installation space and lighter weight. Description of the Drawings

[0010] Figure 1 It is a schematic diagram of an existing supercharging cylinder;

[0011] Figure 2 It is a schematic diagram of the utility model;

[0012] In the figure: 1 - large cylinder barrel, 2 - small cylinder barrel, 3 - large piston, 4 - piston rod, 5 - large cylinder head, 6 - first sealing ring, 7 - second sealing ring, 8 - small piston. Specific embodiments

[0013] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

[0014] Please refer to Figure 2 , a novel supercharged hydraulic cylinder structure, including a large cylinder barrel 1, a small cylinder barrel 2, a large piston 3 arranged in the large cylinder barrel, a piston rod 4 connected to the large piston, and a small piston 8 threadedly connected to the piston rod. One end of the large cylinder barrel 1 is fixed with a large cylinder head 5. One end of the small cylinder barrel 2 is hermetically connected to the inside of the large cylinder head 5 through a first sealing assembly. The first sealing assembly includes a first sealing ring 6 arranged in the large cylinder head 5. The other end of the small cylinder barrel 2 is located outside the large cylinder barrel 1. The small piston 8 is movably arranged in the small cylinder barrel 2 through a second sealing assembly. The second sealing assembly includes three groups of second sealing rings 7 arranged on the outer wall of the small piston 8.

[0015] The small cylinder barrel is placed outside, and on the premise of ensuring the sealing performance of the oil cylinder, this structure can make the large cylinder head correspondingly shorter. In the new structure, on the premise of ensuring the supercharging working effect of the supercharged oil cylinder, both the large cylinder barrel and the large cylinder head can be made more compact. In terms of manufacturing process, it is more efficient and conducive to production. In terms of assembly process, the assembly efficiency is greatly improved. The manufacturing cost of the supercharged oil cylinder is reduced, and the manufacturing period is shortened. In the market, the supercharged hydraulic cylinder structure adopting this structure is more accepted and selected by the market because of its smaller installation space and lighter weight.

[0016] It should be noted that the term "comprising", "including" or any other variant thereof is intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements not only includes those elements, but also includes other elements not expressly listed, or also includes elements inherent to such process, method, article or device. Without further limitation, the element defined by the statement "including a..." does not exclude the existence of additional identical elements in the process, method, article or device including the element.

[0017] Although embodiments of the present utility model have been shown and described, those of ordinary skill in the art can understand that various changes, modifications, substitutions, and variations can be made to these embodiments without departing from the principle and spirit of the present utility model. The scope of the present utility model is defined by the appended claims and their equivalents.

Claims

1. A new type of booster hydraulic cylinder structure, characterized by: The invention comprises a large cylinder (1), a small cylinder (2), a large piston (3) arranged in the large cylinder, a piston rod (4) fixed on the large piston, and a small piston (8) threadedly connected to the piston rod. A large cylinder cover (5) is fixed on one end of the large cylinder (1), one end of the small cylinder (2) is sealedly connected to the large cylinder cover (5) through a first sealing component, the other end of the small cylinder (2) is located outside the large cylinder (1), and the small piston (8) is movably arranged in the small cylinder (2) through a second sealing component.

2. A novel booster hydraulic cylinder structure according to claim 1, characterized in that: The first sealing assembly comprises a first sealing ring (6) arranged in the large cylinder head (5).

3. A novel booster hydraulic cylinder structure according to claim 2, characterized in that: The second sealing assembly comprises three groups of second sealing rings (7) arranged on the outer wall of the small piston.

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