Anti-strain piston suitable for hydraulic oil cylinder

Abstract

The strain-resistant piston comprises a cylinder barrel, a piston rod is connected to one end of the interior of the cylinder barrel in a sliding mode, a piston is fixedly connected to the left end of the piston rod, and outer circle welding copper is symmetrically and fixedly connected to the outer surface of the piston. The two sides, close to outer circle welding copper, of the outer surface of the piston are fixedly connected with first bottom mounting seats in a bilateral symmetry mode, copper of 1 mm is welded to the periphery of the highest point of the outer circle of a traditional hydraulic oil cylinder piston, the hardness of the outer circle of the piston is reduced by changing the material of the outermost layer of the piston, and when the oil cylinder bears lateral force exceeding the bearing capacity of the piston, the piston makes contact with the inner wall of a cylinder barrel; due to the fact that the outer circle of the piston is changed into copper with soft hardness, the inner wall of the cylinder barrel cannot be strained, and therefore the service life of the hydraulic cylinder is prolonged, on the basis, the first bottom installation base is arranged, and when the piston makes contact with the inner wall of the cylinder barrel, the buffering effect can be achieved between the cylinder barrel and the piston through the elastic effect of the elastic pieces when the buffering cushion makes contact with the inner wall of the cylinder barrel.

Description

TECHNICAL FIELD

[0001] The utility model belongs to hydraulic cylinder manufacturing technical field, concretely relates to a kind of anti-injury piston suitable for hydraulic oil cylinder. BACKGROUND

[0002] At present stage, to adapt to new national standard emission requirement, various engineering machinery hydraulic cylinders are developed towards the direction of reducing cylinder diameter and lifting rated pressure, which makes the stability of oil cylinder reduce, and the risk of contact and injury of hydraulic cylinder piston and oil cylinder cylinder wall increases;

[0003] The oil cylinder used by large excavator has large self-weight, and the risk of contact and injury of piston and cylinder wall is also high due to the influence of gravity and working speed;

[0004] In some existing technologies, the engineering machinery oil cylinder with large working pressure is prone to cause damage to the contact surface of piston and cylinder wall after long time use, and lacks the structure for protecting hydraulic cylinder piston, so as to easily affect the service life of overall structure. UTILITY MODEL CONTENTS

[0005] The utility model solves the technical problems, provides a kind of anti-injury piston suitable for hydraulic oil cylinder to solve the problems in some existing technologies in the background art, such as the engineering machinery oil cylinder with large working pressure is prone to cause damage to the contact surface of piston and cylinder wall after long time use, and lacks the structure for protecting hydraulic cylinder piston, so as to easily affect the service life of overall structure.

[0006] To achieve the above-mentioned purpose, the utility model provides the following technical scheme: a kind of anti-injury piston suitable for hydraulic oil cylinder, including cylinder, the inner end of the cylinder is slidably connected with piston rod, the left end of the piston rod is fixedly connected with piston, the outer surface of the piston is fixedly connected with outer round copper welding with symmetry, the outer surface of the piston is fixedly connected with bottom mounting seat one with symmetry on the both sides left and right close to outer round copper welding, the outer surface of two bottom mounting seat one is fixedly connected with lower fixed seat, the outer side of two lower fixed seat is slidably connected with elastic sheet, the outer surface of two elastic sheet is slidably connected with upper fixed seat, the outer surface of two upper fixed seat is fixedly connected with buffer pad.

[0007] Preferably, the buffer pad is slidably connected with the inner wall of the cylinder.

[0008] Preferably, the right end of the piston rod is fixedly connected with cylinder cover.

[0009] Preferably, the right end of the cylinder is fixedly connected with mounting seat two, and the piston rod is slidably connected with the inner surface of mounting seat two.

[0010] Preferably, the left end of the cylinder is fixedly connected with a base.

[0011] Preferably, the inside of the cylinder is provided with a guide groove.

[0012] Preferably, the buffer pad is made of wear-resistant material.

[0013] Preferably, the opposite sides of the two bottom mounting seats and the buffer pad on the same side are fixedly connected with a limiting telescopic seat in a left-right symmetrical mode.

[0014] Compared with the prior art, the anti-damage piston suitable for the hydraulic cylinder has the following beneficial effects:

[0015] 1、the utility model discloses a copper is welded outside, and 1 millimeter copper is welded to the highest point periphery of the traditional hydraulic cylinder piston outside, changes the material of the outermost layer of the piston to reduce the hardness of the piston outside, when the oil cylinder is subjected to lateral force exceeding the bearing capacity, the piston contacts the inner wall of the cylinder, and the copper with soft hardness is used to replace the piston outside, so that the inner wall of the cylinder is not damaged, thereby prolonging the service life of the hydraulic cylinder.

[0016] 2、the utility model discloses a limiting telescopic seat, and the limiting telescopic seat can limit the left and right sides of the elastic sheet, prevent the elastic sheet from being separated from the bottom mounting seat one and the upper fixed seat, and the limiting telescopic seat is telescopic, and does not affect the normal stretching and buffering of the elastic sheet and the buffer pad.

[0017] The parts not involved in the device are the same as or can be realized by the prior art, the utility model has scientific and reasonable structure, safe and convenient to use, and provides great help for people. DRAWINGS

[0018] The drawings are used to provide further understanding of the utility model, and constitute a part of the specification, are used together with the embodiments of the utility model to explain the utility model, and do not constitute the limitation to the utility model, and in the drawings:

[0019] Figure 1 It is a shaft side structure schematic view of the anti-damage piston suitable for the hydraulic cylinder.

[0020] Figure 2 It is a front view vertical section structure schematic view of the anti-damage piston suitable for the hydraulic cylinder.

[0021] Figure 3An enlarged structural schematic view of A in Figure 2 An enlarged structural schematic view of A in

[0022] Figure 4 An enlarged structural schematic view of B in Figure 3 An enlarged structural schematic view of B in

[0023] Figure 5 A piston partial structure schematic view of a tensile injury resistant piston suitable for a hydraulic cylinder is provided in the utility model;

[0024] In the figure: 1, cylinder barrel; 2, piston rod; 3, piston; 4, cylinder cover; 5, base; 6, bottom mounting seat one; 7, lower fixing seat; 8, elastic sheet; 9, upper fixing seat; 10, buffer pad; 11, limiting telescopic seat; 12, outer circle welding copper; 13, guide groove; 14, mounting seat two. DETAILED DESCRIPTION

[0025] The technical solutions in the embodiments of the utility model will be apparently and completely described below with reference to the drawings in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, rather than all the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by those skilled in the art without creative labor fall within the protection scope of the utility model.

[0026] Please refer to Figures 1-5 The utility model provides a technical scheme: a tensile injury resistant piston suitable for a hydraulic cylinder, including cylinder barrel 1, the inside one end of cylinder barrel 1 is connected with piston rod 2 slidingly, the left end of piston rod 2 is fixedly connected with piston 3, the outer surface of piston 3 is fixedly connected with outer circle welding copper 12 symmetrically, the both sides of the outer surface of piston 3 close to outer circle welding copper 12 are fixedly connected with bottom mounting seat one 6 left and right symmetrically, the outer surface of two bottom mounting seat one 6 is fixedly connected with lower fixing seat 7, the outer side of two lower fixing seat 7 is connected with elastic sheet 8 slidingly, the outer surface of two elastic sheet 8 is connected with upper fixing seat 9 slidingly, the outer surface of two upper fixing seat 9 is fixedly connected with buffer pad 10, 1 millimeter copper is welded in the highest point circle of the outer circle of traditional hydraulic cylinder piston 3, by changing the outermost layer material of piston, thereby reducing the hardness of the outer circle of piston 3, when the oil cylinder is subjected to lateral force exceeding its bearing capacity, piston 3 contacts with the inner wall of cylinder, because the outer circle of piston 3 is changed into copper with relatively soft hardness, will not pull the inner wall of cylinder, thereby improving the service life of hydraulic cylinder, on this basis, setting bottom mounting seat one 6, when piston contacts with the inner wall of cylinder, by the elastic action of elastic sheet 8, when buffer pad 10 contacts with the inner wall of cylinder, can play the role of buffering between cylinder 1 and piston 3, can reduce the damage to the inner wall of cylinder to a certain extent, to prolong the service life of the overall structure.

[0027] The utility model discloses, preferably, the buffer pad 10 is slidably connected with the inner wall of cylinder barrel 1.

[0028] The utility model discloses, preferably, the right -hand member fixed connection of piston rod 2 has cylinder cover 4.

[0029] The utility model discloses, preferably, the right -hand member fixed connection of cylinder barrel 1 has mounting seat no. 2 14, and piston rod 2 slides in the inner surface of mounting seat no. 2 14.

[0030] The utility model discloses, preferably, the left -hand member fixed connection of cylinder barrel 1 has base 5.

[0031] The utility model discloses, preferably, be provided with guide groove 13 in the inside of cylinder barrel 1.

[0032] The utility model discloses, preferably, buffer pad 10 adopts wear -resisting material.

[0033] The utility model discloses, preferably, the opposite side of two bottom mounting seat no. 1 6 and buffer pad 10 in the same side is left -right symmetry fixed connection with limit telescopic seat 11, and limit telescopic seat 11 can play the limiting effect to the left and right sides of elastic sheet 8, prevents elastic sheet 8 from and prevents elastic sheet 8 from between the upper fixed seat 9 of bottom mounting seat no. 1 6 and the normal stretching and buffering of buffer pad 10 place influence.

[0034] The utility model discloses, preferably, the right -hand member fixed connection of cylinder barrel 1 has mounting seat no. 2 14, and piston rod 2 slides in the inner surface of mounting seat no. 2 14.

[0035] Although the embodiments of the utility model have been shown and described, it is understood by those skilled in the art that various changes, modifications, replacements and variations can be made to the embodiments without departing from the principles and spirits of the utility model, and the scope of the utility model is defined by the appended claims and their equivalents.

Claims

1. A scuff resistant piston for a hydraulic cylinder comprising a cylinder barrel (1) characterised in that: One end of the cylinder (1) inside the sliding connection has a piston rod (2), the left end of the piston rod (2) is fixedly connected with a piston (3), the outer surface of the piston (3) is fixedly connected with an outer round welding copper (12) symmetrically, the outer surface of the piston (3) is fixedly connected with a bottom mounting seat one (6) on both sides of the outer round welding copper (12) left and right symmetrically, the outer surface of the two bottom mounting seat one (6) is fixedly connected with a lower fixed seat (7), the outer side of the two lower fixed seat (7) is slidably connected with a spring piece (8), the outer surface of the two spring piece (8) is slidably connected with an upper fixed seat (9), the outer surface of the two upper fixed seat (9) is fixedly connected with a buffer pad (10).

2. A scuff resistant piston for a hydraulic cylinder as defined in claim 1, wherein: The buffer pad (10) is slidably connected with the inner wall of the cylinder (1).

3. A scuff resistant piston for a hydraulic cylinder as defined in claim 1, wherein: The right end of the piston rod (2) is fixedly connected with a cylinder cover (4).

4. A scuff resistant piston for a hydraulic cylinder as defined in claim 1, wherein: The right end of the cylinder (1) is fixedly connected with a mounting seat two (14), and the piston rod (2) slides on the inner surface of the mounting seat two (14).

5. A scuff resistant piston for a hydraulic cylinder as defined in claim 1, wherein: The left end of the cylinder (1) is fixedly connected with a base (5).

6. A scuff resistant piston for a hydraulic cylinder as defined in claim 1, wherein: The inside of the cylinder (1) is provided with a guide groove (13).

7. A scuff resistant piston for a hydraulic cylinder as defined in claim 1, wherein: The buffer pad (10) is made of wear-resistant material.

8. A scuff resistant piston for a hydraulic cylinder as defined in claim 1, wherein: The opposite sides of the two bottom mounting seat one (6) and the buffer pad (10) on the same side are fixedly connected with a limiting telescopic seat (11) left and right symmetrically.

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