Anti-corrosion piston rod of hydraulic cylinder

Abstract

The utility model relates to the technical field of hydraulic cylinder accessories, in particular to an anti-corrosion piston rod of a hydraulic cylinder, which comprises a piston rod body and a piston sleeve, the piston rod body is arranged inside the piston sleeve, a piston body is slidably connected inside the piston sleeve, and the piston rod body is arranged on one side of the piston body. One end, far away from the piston body, of the piston rod body extends to the outer side of the piston sleeve and is fixedly connected with a fixing plate, the anti-corrosion coating covers the surface of the piston rod body by adopting a thermal spraying technology, the anti-corrosion coating is a ceramic coating, and the protective sleeve is of a telescopic structure and sleeves the part, extending out of the piston sleeve, of the piston rod body. The high-strength corrosion-resistant alloy steel piston rod has the advantages that due to multiple protection of the high-strength corrosion-resistant alloy steel piston rod body, the ceramic corrosion-resistant coating and the rubber protection sleeve, corrosion of corrosive media to the piston rod body is effectively blocked, and the corrosion-resistant capacity of the piston rod body in a severe environment is remarkably improved; compared with a traditional device, the operation quality and the use efficiency are greatly improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to hydraulic cylinder accessory technical field especially relates to a kind of anticorrosive piston rod of hydraulic cylinder. BACKGROUND

[0002] In industrial production, hydraulic cylinder is widely used in various mechanical equipment, and its piston rod is as key component, frequently bears reciprocating motion and external force.

[0003] However, many working environments exist corrosive medium, such as acid-base solution in chemical production, seawater in marine engineering etc., the traditional piston rod is easily corroded in this environment, leading to surface rust, peeling, and then affecting the surface precision and mechanical properties of piston rod, corrosion can also cause the cooperation problem between piston rod and hydraulic cylinder barrel, cause leakage, jamming and other faults, seriously affect the normal operation of hydraulic cylinder, increase equipment maintenance cost and downtime, at present, part of piston rod although adopts some anticorrosive measures, but the effect is not ideal, cannot meet the demand of working in harsh corrosive environment for a long time.

[0004] Aiming at the above problems, we launch a kind of anticorrosive piston rod of hydraulic cylinder. UTILITY MODEL CONTENTS

[0005] The utility model discloses a kind of anticorrosive piston rod of hydraulic cylinder, to solve the technical problem in background art.

[0006] To achieve the above purpose, the utility model adopts the following technical scheme:

[0007] A kind of anticorrosive piston rod of hydraulic cylinder, including piston rod body and piston sleeve, the piston rod body is arranged in the inside of piston sleeve, the inside of piston sleeve is slidably connected with piston body, the piston rod body is arranged in one side of piston body, the end of the piston rod body away from piston body extends to the outside of piston sleeve and is fixedly connected with fixed plate, further include: anticorrosive coating, the anticorrosive coating is covered on the surface of piston rod body using thermal spraying technology, the anticorrosive coating is ceramic coating, protective sleeve, the protective sleeve is telescopic structure, is sleeved in the part of piston rod body and extends piston sleeve, one end of the protective sleeve is connected in one end of piston sleeve by screw, the other end is connected in one side of fixed plate by screw, and it moves with the telescopic piston rod body.

[0008] The piston rod body is often exposed to complex environment, and the ceramic anticorrosion coating covered by using thermal spraying technology is not easy to be corroded on the surface of the piston rod body even in rainy days or in contact with corrosive mud, the anticorrosion coating effectively blocks the erosion of acidic substances on the piston rod body, and when the piston rod body is extended or retracted, the protective sleeve is extended or retracted, so that foreign matters such as dust and sand outside are prevented from scratching the piston rod body, and the anticorrosion performance is further enhanced, and the protective sleeve blocks a large amount of splashing sand, and ensures the surface integrity of the piston rod body.

[0009] In a preferred scheme, the rear cover at one end of the piston sleeve away from the protective sleeve is connected by a plurality of fastening screws, and the rear cover and the side away from the fixed plate are fixedly connected with a connecting head, and the connecting head is provided with a connecting wear-resistant rubber sleeve inside.

[0010] The rear cover at one end of the piston sleeve is firmly connected by the fastening screw, so that the sealing performance of the inside of the hydraulic cylinder is ensured, the connecting wear-resistant rubber sleeve can buffer the impact force generated when the heavy object is lifted and lowered, and the wear of the connecting part is reduced.

[0011] In a preferred scheme, the piston rod body is fixedly connected with a threaded rod at one end away from the fixed plate, and the threaded rod is threaded and connected with a fastening nut at one end away from the piston rod body and penetrating the piston body.

[0012] The piston rod body and the piston body are connected through the threaded rod and the fastening nut, and the connection is very convenient during installation and maintenance.

[0013] In a preferred scheme, a connecting oil seal is embedded on one side of the inside of the piston sleeve, and the piston rod body is used in cooperation with the connecting oil seal.

[0014] The connecting oil seal is embedded in the inside of the piston sleeve and cooperates with the piston rod body to play an important sealing role, prevents impurities from entering the inside of the piston sleeve, and protects the piston body and the piston rod body from rusting and wearing.

[0015] In a preferred scheme, two sealing rubber rings are embedded on the outside of the piston body, and the sealing rubber rings are in contact with the inner wall of the piston sleeve.

[0016] The sealing rubber ring effectively prevents the leakage of hydraulic oil, and also avoids the entry of foreign matters into the inside of the hydraulic cylinder, and the piston body reciprocates at high speed in the piston sleeve, and the sealing rubber ring always maintains good sealing performance, so that the pressure stability of the hydraulic system is ensured.

[0017] In a preferred scheme, the piston rod body is made of high-strength corrosion-resistant alloy steel, and alloy elements such as chromium, nickel and molybdenum are added to the steel through a special smelting process to form a dense oxide film.

[0018] Even if the piston rod body occasionally contacts the leaked material, the dense oxide film can effectively block corrosion and prevent the piston rod body from being eroded and damaged, and in the long-term chemical production process, the piston rod body maintains a good working state due to its excellent material properties.

[0019] In a preferred scheme, the protective sleeve is made of oil-resistant and corrosion-resistant rubber material.

[0020] The protective sleeve made of oil-resistant and corrosion-resistant rubber material can not only prevent the corrosion of corrosive substances such as salt carried by seawater and sea wind from contacting the piston rod body, but also resist the corrosion of hydraulic oil during the extension and retraction of the piston rod body.

[0021] The anti-corrosion piston rod of the hydraulic cylinder provided by the utility model has the following advantages:

[0022] In the utility model, the piston rod body is covered with a ceramic anti-corrosion coating by thermal spraying technology, the surface of the piston rod body is not easy to be corroded, the anti-corrosion coating effectively blocks the corrosion of acidic substances to the piston rod body, and at the same time, when the piston rod body is extended or retracted, the protective sleeve is extended or retracted, so that the piston rod body is prevented from being scratched by foreign matters such as dust and sandstone from the outside;

[0023] 1. The multiple protection of the high-strength corrosion-resistant alloy steel piston rod body, the ceramic anti-corrosion coating and the rubber protective sleeve effectively blocks the corrosion of corrosive media to the piston rod body, and significantly improves the corrosion resistance of the piston rod body in harsh environments;

[0024] 2. The good corrosion resistance reduces the damage of the piston rod body caused by corrosion, and the high wear resistance of the ceramic coating reduces the degree of wear, thereby prolonging the service life of the piston rod body and reducing the frequency of equipment maintenance and replacement;

[0025] 3. The protective sleeve not only plays a corrosion prevention role, but also prevents dust and impurities from entering the hydraulic cylinder, ensures the good cooperation between the piston rod body and the piston sleeve, improves the stability and reliability of the hydraulic cylinder, and greatly improves the operation quality and use efficiency compared with the traditional device. BRIEF DESCRIPTION OF DRAWINGS

[0026] Figure 1 The utility model provides a kind of first perspective three-dimensional schematic view of the anti-corrosion piston rod of hydraulic cylinder.

[0027] Figure 2 The utility model provides a kind of second perspective three-dimensional schematic view of the anti-corrosion piston rod of hydraulic cylinder.

[0028] Figure 3 The utility model provides a kind of piston sleeve sectional view schematic view of the anti-corrosion piston rod of hydraulic cylinder.

[0029] Figure 4 The utility model provides a kind of hydraulic cylinder's anticorrosive piston rod's piston rod body structure schematic diagram.

[0030] Figure 5 The utility model provides a kind of hydraulic cylinder's anticorrosive piston rod's protective sleeve structure schematic diagram.

[0031] Figure 6 The utility model provides a kind of hydraulic cylinder's anticorrosive piston rod's piston rod body sectional view schematic diagram.

[0032] In the drawing: 1, piston rod body;2, piston sleeve;3, piston body;4, anticorrosive coating;5, fixed plate;6, protective sleeve;7, back cover;8, connector;9, connect wear rubber sleeve;10, threaded rod;11, fastening nut;12, connecting oil seal;13, sealing rubber ring. DETAILED DESCRIPTION

[0033] The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, not all. The components of the embodiments of the present application described and indicated in the drawings can be arranged and designed in various different configurations. Therefore, the following detailed description of the embodiments of the present application provided in the drawings is not intended to limit the scope of the claimed present application, but only represents selected embodiments of the present application. Based on the embodiments of the present application, all other embodiments obtained by those skilled in the art without creative labor are within the scope of protection of the present application.

[0034] The utility model discloses a kind of hydraulic cylinder's anticorrosive piston rod mainly applied to the scene of hydraulic cylinder accessory.

[0035] Refer to Figures 1-6 A kind of anticorrosive piston rod of hydraulic cylinder, including piston rod body 1 and piston sleeve 2, piston rod body 1 is arranged in the inside of piston sleeve 2, piston body 3 is slidably connected in the inside of piston sleeve 2, piston rod body 1 is arranged in the side of piston body 3, the end of piston rod body 1 away from piston body 3 extends to the outside of piston sleeve 2 and is fixedly connected with fixed plate 5, further include: anticorrosive coating 4, anticorrosive coating 4 is covered on the surface of piston rod body 1 using thermal spraying technology, anticorrosive coating 4 is ceramic coating, protective sleeve 6, protective sleeve 6 is telescopic structure, is sleeved in the part of piston rod body 1 that extends out of piston sleeve 2, one end of protective sleeve 6 is connected in the one end of piston sleeve 2 by screw, the other end is connected in the side of fixed plate 5 by screw, and moves with the telescoping of piston rod body 1.

[0036] The piston rod body 1 is often exposed to complex environment, and the ceramic corrosion-resistant coating 4 covered by using thermal spraying technology can prevent the piston rod body 1 from being corroded even in rainy days or when contacting corrosive mud, and effectively prevents the acidic substances from corroding the piston rod body 1. Meanwhile, when the piston rod body 1 is extended or retracted, the protective sleeve 6 is extended or retracted accordingly, preventing foreign matters such as dust and sand from scratching the piston rod body 1, and further enhancing the corrosion resistance of the piston rod body 1. The protective sleeve 6 blocks a large amount of splashing sand, ensuring the surface integrity of the piston rod body 1.

[0037] In a preferred embodiment, the rear cover 7 at one end of the piston sleeve 2 away from the protective sleeve 6 is connected by a plurality of fastening screws, and the rear cover 7 and the side of the fixed plate 5 away from each other are fixedly connected with the connecting head 8, and the inside of the connecting head 8 is provided with the connecting wear-resistant rubber sleeve 9.

[0038] In the embodiment, the rear cover 7 at one end of the piston sleeve 2 is firmly connected by fastening screws, ensuring the sealing performance of the inside of the hydraulic cylinder, and the connecting wear-resistant rubber sleeve 9 can buffer the impact force generated when lifting and lowering heavy objects, reducing the wear of the connecting part.

[0039] In a preferred embodiment, the threaded rod 10 is fixedly connected to the end of the piston rod body 1 away from the fixed plate 5, and the end of the threaded rod 10 away from the piston rod body 1 penetrates the piston body 3 and is screw-connected with the fastening nut 11.

[0040] In the embodiment, the piston rod body 1 and the piston body 3 are connected by the threaded rod 10 and the fastening nut 11, and the connection is very convenient during installation and maintenance.

[0041] In a preferred embodiment, the connecting oil seal 12 is embedded on one side of the inside of the piston sleeve 2, and the piston rod body 1 is used in cooperation with the connecting oil seal 12.

[0042] In the embodiment, the connecting oil seal 12 is embedded in the inside of the piston sleeve 2 and cooperates with the piston rod body 1 to play an important sealing role, preventing impurities from entering the inside of the piston sleeve 2 and protecting the piston body 3 and the piston rod body 1 from rusting and wearing.

[0043] In a preferred embodiment, two sealing rubber rings 13 are embedded on the outside of the piston body 3, and the sealing rubber rings 13 are in contact with the inner wall of the piston sleeve 2.

[0044] In the embodiment, the sealing rubber rings 13 effectively prevent the leakage of hydraulic oil, and also avoid the entry of foreign matters into the inside of the hydraulic cylinder. The piston body 3 reciprocates at high speed in the piston sleeve 2, and the sealing rubber rings 13 always maintain good sealing performance, ensuring the stability of the pressure of the hydraulic system.

[0045] In a preferred embodiment, the piston rod body 1 is made of high-strength corrosion-resistant alloy steel, and alloy elements such as chromium, nickel, and molybdenum are added to the steel through a special smelting process to form a dense oxide film.

[0046] In this embodiment, even if the piston rod body 1 occasionally contacts the leaked material, the dense oxide film can effectively block corrosion and prevent the piston rod body 1 from being eroded and damaged. In the long-term chemical production process, the piston rod body 1 maintains a good working state due to its excellent material properties.

[0047] In a preferred embodiment, the protective sleeve 6 is made of oil-resistant and corrosion-resistant rubber material.

[0048] In this embodiment, the protective sleeve 6 made of oil-resistant and corrosion-resistant rubber material can not only prevent corrosive substances such as salt carried by seawater and sea wind from contacting the piston rod body 1, but also resist the erosion of hydraulic oil during the extension and retraction of the piston rod body 1.

[0049] Working principle: In use, when the hydraulic system is working, the hydraulic oil pushes the piston body 3 to reciprocate in the piston sleeve 2, driving the piston rod body 1 to extend and retract.

[0050] The piston rod body 1 is made of high-strength corrosion-resistant alloy steel, and alloy elements such as chromium, nickel, and molybdenum are added to the steel through a special smelting process to form a dense oxide film. The surface is covered with a ceramic corrosion-resistant coating 4 using thermal spraying technology, providing double protection to ensure corrosion resistance.

[0051] The piston body 3 is connected to the piston rod body 1 through the threaded rod 10 and the fastening nut 11, and the sealing rubber ring 13 is in close contact with the inner wall of the piston sleeve 2 to prevent hydraulic oil leakage.

[0052] The connecting oil seal 12 ensures the sealing between the piston rod body 1 and the piston sleeve 2.

[0053] The telescopic protective sleeve 6 extends and retracts with the movement of the piston rod body 1, effectively blocking external pollutants.

[0054] The connecting head 8 and the connecting wear-resistant rubber sleeve 9 realize reliable connection with external mechanisms, and the entire device can still maintain excellent corrosion resistance and sealing reliability in harsh working conditions.

[0055] The above description is only a preferred specific implementation of the present application, but the protection scope of the present application is not limited thereto. The substitution can be a partial structure, device, or method step substitution, or a complete technical solution. According to the technical solution and the utility model concept of the present application, equivalent substitution or changes are covered within the protection scope of the present application.

Claims

1. A corrosion-protected piston rod of a hydraulic cylinder, comprising a piston rod body (1) and a piston sleeve (2), characterized in that The piston rod body (1) is arranged inside the piston sleeve (2), the piston body (3) is slidably connected inside the piston sleeve (2), the piston rod body (1) is arranged on one side of the piston body (3), one end of the piston rod body (1) away from the piston body (3) extends to the outside of the piston sleeve (2) and is fixedly connected with the fixed plate (5), and the piston rod body (1) further comprises: The corrosion-resistant coating (4) is covered on the surface of the piston rod body (1) by using a thermal spraying technology, and the corrosion-resistant coating (4) is a ceramic coating; The protective sleeve (6) is a telescopic structure, is sleeved on the part of the piston rod body (1) extending out of the piston sleeve (2), one end of the protective sleeve (6) is connected to one end of the piston sleeve (2) by a screw, the other end is connected to one side of the fixed plate (5) by a screw, and moves with the extension and retraction of the piston rod body (1).

2. A corrosion resistant piston rod for a hydraulic cylinder according to claim 1, characterized in that The rear cover (7) is connected to the end of the piston sleeve (2) away from the protective sleeve (6) by a plurality of fastening screws, the side of the rear cover (7) away from the fixed plate (5) is fixedly connected with the connecting head (8), and the connecting head (8) is provided with the connecting wear-resistant rubber sleeve (9) inside.

3. A corrosion resistant piston rod for a hydraulic cylinder as defined in claim 1, characterized in that The threaded rod (10) is fixedly connected to the end of the piston rod body (1) away from the fixed plate (5), one end of the threaded rod (10) away from the piston rod body (1) penetrates the piston body (3) and is screw-connected with the fastening nut (11).

4. A corrosion resistant piston rod for a hydraulic cylinder as defined in claim 1, characterized in that The connecting oil seal (12) is embedded on one side of the inside of the piston sleeve (2), and the piston rod body (1) is used in cooperation with the connecting oil seal (12).

5. A corrosion resistant piston rod for a hydraulic cylinder as defined in claim 1, wherein The two sealing rubber rings (13) are embedded on the outside of the piston body (3), and the sealing rubber rings (13) are in contact with the inner wall of the piston sleeve (2).

6. A corrosion resistant piston rod for a hydraulic cylinder according to claim 1, wherein The piston rod body (1) is made of high-strength corrosion-resistant alloy steel.

7. A corrosion resistant piston rod for a hydraulic cylinder as defined in claim 1, wherein The protective sleeve (6) is made of oil-resistant and corrosion-resistant rubber material.

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