Split mud barge oil cylinder with waterproof structure

Abstract

The utility model provides a split mud barge oil cylinder with a waterproof structure, and relates to the technical field of hydraulic oil cylinders, the split mud barge oil cylinder comprises an oil cylinder body and a piston rod arranged on the oil cylinder body, the split mud barge oil cylinder further comprises a first sealing assembly, the first sealing assembly comprises a supporting ring connected to the oil cylinder body, and the supporting ring is provided with a limiting groove. When the piston rod stretches out and draws back in the oil cylinder body, a supporting ring in the first sealing assembly is fixed to the oil cylinder body, a connecting ring is connected to the supporting ring through matching of a connecting groove in the supporting ring and a connecting block on the connecting ring, a rubber pad in a limiting groove is tightly attached to the piston rod, a first elastic piece in a clamping groove provides elastic supporting, and the sealing effect is enhanced; and the waterproof cover of the second sealing assembly covers the outer side of the piston rod, so that a protective barrier is formed, water, silt and other impurities are preliminarily prevented from invading, double waterproof protection on the oil cylinder is achieved, and long-term waterproof reliability under the high-pressure working condition is ensured.

Description

Technical Field

[0001] This utility model relates to the field of hydraulic cylinder technology, and in particular to an open mud barge cylinder with a waterproof structure. Background Technology

[0002] Open-body mud barge cylinders are commonly used in soil transportation and loading / unloading operations, and have a strong load-bearing capacity. However, in complex operating environments, the cylinders are susceptible to moisture corrosion, which can lead to equipment failure or performance degradation. To improve their durability, a waterproof structure is incorporated into the design. The sealing design prevents moisture from entering the cylinder, thereby extending the service life and reliability of the equipment and ensuring its normal operation in harsh environments.

[0003] However, in actual use, the following shortcomings still exist. For example, the existing open-body mud barge cylinder cannot achieve double waterproof protection for the cylinder to ensure long-term waterproof reliability under high pressure conditions. Water entering the cylinder will mix with the hydraulic oil, causing the oil to emulsify, oxidize, or breed microorganisms, resulting in hydraulic system contamination. The lubrication performance of the emulsified oil decreases, which may cause abnormal wear of components such as piston rods and seals, and even lead to failures such as hydraulic valve jamming and pump damage. Under high pressure conditions, the water pressure may exceed the limit of a single-layer seal, causing the sealing ring to deform, tear, or harden, thereby losing its sealing ability.

[0004] Therefore, this utility model proposes an open-body mud barge cylinder with a waterproof structure to solve the above problems. Utility Model Content

[0005] The purpose of this invention is to overcome the shortcomings of the existing technology and propose an open mud barge oil cylinder with a waterproof structure.

[0006] To achieve the above objectives, the present invention adopts the following technical solution: an open-body mud barge cylinder with a waterproof structure, comprising a cylinder body and a piston rod disposed on the cylinder body, and further comprising:

[0007] A first sealing assembly includes a support ring connected to a cylinder body. The support ring has a limiting groove, a rubber pad is provided in the limiting groove, a retaining groove is provided in the rubber pad, a first spring is provided in the retaining groove, a connecting groove is provided on the side of the support ring away from the limiting groove, a flow guide groove is provided on the support ring, a connecting ring is provided on the support ring, and a connecting block is connected to the side of the connecting ring near the connecting groove, the connecting block is disposed in the connecting groove.

[0008] The second sealing assembly includes a waterproof cover disposed on one side of the connecting ring.

[0009] Furthermore, a first sealing ring is provided inside the connecting ring.

[0010] The beneficial effects of adopting the above-mentioned further solution are: the first sealing ring is installed inside the connecting ring, and is made of oil-resistant rubber material, which fits tightly with the piston rod to form a sealing barrier, enhances the sealing effect, and prevents oil leakage.

[0011] Furthermore, a support block is connected to the connecting ring, and the waterproof cover is connected to the support block.

[0012] The beneficial effects of adopting the above-mentioned further solution are: the support block is fixed on the connecting ring to provide stable support for the waterproof cover, and the waterproof cover is fixed on the support block by buckles to form an outer protective layer, which prevents external mud and seawater from directly impacting the sealing structure.

[0013] Furthermore, a second spring sheet is provided inside the waterproof cover.

[0014] The beneficial effects of adopting the above-mentioned further solution are: the second spring is installed inside the waterproof cover, providing dynamic compensation capability. When the piston rod moves, the second spring deforms slightly with the displacement, always pressing the cover tightly to prevent seal failure due to wear. Its elastic characteristics can adapt to pressure changes under different working conditions, ensuring long-term effective sealing between the waterproof cover and the piston rod.

[0015] Furthermore, one end of the second spring is connected to the support block, and the other end of the second spring is connected to the waterproof cover.

[0016] The beneficial effects of adopting the above-mentioned further solution are: one end of the second spring is fixed on the support block, and the other end is connected to the waterproof cover, so that it can adaptively adjust with the movement of the piston rod, so that the spring deforms evenly when subjected to force, avoids local stress concentration, and extends service life.

[0017] Furthermore, a second sealing ring is provided on the side of the waterproof cover away from the support block.

[0018] The beneficial effects of adopting the above-mentioned further solution are: the second sealing ring is located on the waterproof cover and is made of fluororubber, which is corrosion-resistant and wear-resistant. Its function is to assist in sealing. The second sealing ring and the first sealing ring form a double protection. Even if the internal seal fails slightly, it can still provide protection and ensure the long-term waterproof performance of the oil cylinder in harsh environments.

[0019] Compared with the prior art, the advantages and positive effects of this utility model are as follows:

[0020] In this invention, when the piston rod extends and retracts within the cylinder body, the support ring in the first sealing assembly is fixed to the cylinder body. The connecting groove on the support ring engages with the connecting block on the connecting ring, allowing the connecting ring to connect to the support ring. The rubber pad in the limiting groove is tightly pressed against the piston rod, and the first spring in the slot provides elastic support, enhancing the sealing effect. The guide groove guides the seeping water out. The waterproof cover of the second sealing assembly covers the outside of the piston rod, forming a protective barrier that initially blocks the intrusion of water, mud, and other impurities, achieving double waterproof protection for the cylinder and ensuring long-term waterproof reliability under high-pressure conditions. Attached Figure Description

[0021] Figure 1 This is a schematic diagram of the structure of an open-body mud barge oil cylinder with a waterproof structure according to the present invention;

[0022] Figure 2 This is a schematic diagram of the first sealing component and the second sealing component of an open mud barge cylinder with a waterproof structure according to the present invention.

[0023] Figure 3 This is a structurally disassembled schematic diagram of the first sealing component of an open-body mud barge cylinder with a waterproof structure according to the present invention.

[0024] Figure 4 This is a split side view of the first sealing component structure of an open mud barge cylinder with a waterproof structure according to this utility model.

[0025] Figure 5 This is a schematic diagram of the second sealing component of an open mud barge cylinder with a waterproof structure according to the present invention.

[0026] Figure label:

[0027] 1. Cylinder body; 2. Piston rod;

[0028] 3. First sealing assembly; 31. Support ring; 32. Limiting groove; 33. Rubber gasket; 34. Slot; 35. First spring piece; 36. Connecting groove; 37. Guide groove; 38. Connecting ring; 39. Connecting block; 310. First sealing ring;

[0029] 4. Second sealing assembly; 41. Support block; 42. Waterproof cover; 43. Second spring; 44. Second sealing ring. Detailed Implementation

[0030] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0031] like Figures 1-5 As shown, this embodiment provides a technical solution: an open-body mud barge cylinder with a waterproof structure, including a cylinder body 1 and a piston rod 2 disposed on the cylinder body 1, and further including:

[0032] The first sealing assembly 3 includes a support ring 31 connected to the cylinder body 1. The support ring 31 has a limiting groove 32. A rubber pad 33 is provided in the limiting groove 32. A slot 34 is provided in the rubber pad 33. A first spring piece 35 is provided in the slot 34. A connecting groove 36 is provided on the side of the support ring 31 away from the limiting groove 32. A guide groove 37 is provided on the support ring 31. A connecting ring 38 is provided on the support ring 31. A connecting block 39 is connected to the side of the connecting ring 38 near the connecting groove 36. The connecting block 39 is provided in the connecting groove 36.

[0033] The second sealing assembly 4 includes a waterproof cover 42 disposed on one side of the connecting ring 38. When the piston rod 2 extends and retracts within the cylinder body 1, the support ring 31 in the first sealing assembly 3 is fixed to the cylinder body 1. The connecting groove 36 on the support ring 31 cooperates with the connecting block 39 on the connecting ring 38, so that the connecting ring 38 is connected to the support ring 31. The rubber pad 33 in the limiting groove 32 is in close contact with the piston rod 2. The first spring piece 35 in the slot 34 provides elastic support and enhances the sealing effect. The guide groove 37 can guide the seeping water out. The waterproof cover 42 of the second sealing assembly 4 covers the outside of the piston rod 2, forming a protective barrier, initially blocking the intrusion of water, mud and other impurities, achieving double waterproof protection for the cylinder, and ensuring long-term waterproof reliability under high pressure conditions.

[0034] The above solutions also have the problem that, when the open-body mud barge hydraulic cylinder is in operation, it cannot meet the pressure changes under different working conditions, such as... Figures 3-4 As shown: A first sealing ring 310 is provided inside the connecting ring 38. The first sealing ring 310 is installed inside the connecting ring 38 and is made of oil-resistant rubber material. It fits tightly with the piston rod 2 to form a sealing barrier, enhance the sealing effect, and prevent oil leakage.

[0035] like Figure 2 as well as Figure 5As shown, a support block 41 is connected to the connecting ring 38, and a waterproof cover 42 is connected to the support block 41. The support block 41 is fixed to the connecting ring 38, providing stable support for the waterproof cover 42. The waterproof cover 42 is fixed to the support block 41 by a snap fastener, forming an outer protective layer to prevent external mud, sand, and seawater from directly impacting the sealing structure. A second spring plate 43 is installed inside the waterproof cover 42, providing dynamic compensation capability. When the piston rod 2 moves, the second spring plate 43 deforms slightly with the displacement, always pressing the sealing surface tightly to prevent seal failure due to wear. Its elastic characteristics can adapt to pressure changes under different working conditions, ensuring a long-term effective seal between the waterproof cover 42 and the piston rod 2. One end of the second spring sheet 43 is connected to the support block 41, and the other end of the second spring sheet 43 is connected to the waterproof cover 42. One end of the second spring sheet 43 is fixed to the support block 41, and the other end is connected to the waterproof cover 42, so that it can adaptively adjust with the movement of the piston rod 2, so that the spring sheet deforms evenly when under force, avoids local stress concentration, and extends service life. A second sealing ring 44 is provided on the side of the waterproof cover 42 away from the support block 41. The second sealing ring 44 is located on the waterproof cover 42 and is made of fluororubber, which is corrosion-resistant and wear-resistant. Its function is to assist in sealing. The second sealing ring 44 and the first sealing ring 310 form a double protection. Even if the internal seal fails slightly, it can still provide protection and ensure the long-term waterproof performance of the oil cylinder in harsh environments.

[0036] Working principle:

[0037] like Figures 1-5As shown, when the piston rod 2 retracts within the cylinder body 1, the support ring 31 is fixed to the cylinder body 1. The connecting ring 38 engages with the connecting groove 36 on the support ring 31 via the connecting block 39, thus securely connecting to the support ring 31. In the first sealing assembly 3, the rubber pad 33 in the limiting groove 32 tightly fits the piston rod 2, while the first spring 35 in the slot 34 provides elastic support for the rubber pad 33. When the piston rod 2 moves, causing wear or pressure changes in the rubber pad 33, the elasticity of the first spring 35 ensures that it maintains a good fit with the piston rod 2, enhancing the sealing effect and effectively preventing oil leakage from the connection between the piston rod 2 and the cylinder body 1. Simultaneously, the guide groove 37 on the support ring 31 guides and drains any infiltrated water, preventing water accumulation at the sealing area and affecting sealing performance. The waterproof cover 42 of the second sealing assembly 4 is fixed to the connecting ring 38 via the support block 41, covering the piston rod 2. An outer protective barrier is formed on the outside of the piston rod 2. During the movement of the piston rod 2, the waterproof cover 42 can initially block impurities such as water, mud, and seawater from directly impacting the internal sealing structure. One end of the second spring plate 43 inside the waterproof cover 42 is fixed to the support block 41, and the other end is connected to the waterproof cover 42. When the piston rod 2 moves, the second spring plate 43 will deform slightly with the displacement, always pressing the cover tightly, dynamically compensating for the sealing gap caused by wear or changes in working pressure, and preventing sealing failure. In addition, the second sealing ring 44 on the waterproof cover 42 is made of fluororubber, which is corrosion-resistant and wear-resistant, forming a double protection with the first sealing ring 310 inside the connecting ring 38. Even if the first sealing ring 310 inside fails slightly, the second sealing ring 44 can still play a role, providing additional sealing protection, ensuring that the cylinder can achieve long-term reliable waterproof performance under various working conditions such as high pressure and harsh environment, and ensuring the normal operation of the cylinder.

[0038] The above description is merely a preferred embodiment of the present utility model and is not intended to limit the present utility model in any other way. Any person skilled in the art may make changes or modifications to the above-disclosed technical content to create equivalent embodiments for application in other fields. However, any simple modifications, equivalent changes, and modifications made to the above embodiments based on the technical essence of the present utility model without departing from the technical solution of the present utility model shall still fall within the protection scope of the technical solution of the present utility model.

Claims

1. A water-resistant open-body mud barge cylinder, comprising a cylinder body (1) and a piston rod (2) disposed on the cylinder body (1), characterized in that, Also includes: The first sealing assembly (3) includes a support ring (31) connected to the cylinder body (1), a limiting groove (32) is provided on the support ring (31), a rubber pad (33) is provided in the limiting groove (32), a slot (34) is provided on the rubber pad (33), a first spring piece (35) is provided in the slot (34), a connecting groove (36) is provided on the side of the support ring (31) away from the limiting groove (32), a guide groove (37) is provided on the support ring (31), a connecting ring (38) is provided on the support ring (31), a connecting block (39) is connected on the side of the connecting ring (38) near the connecting groove (36), and the connecting block (39) is provided in the connecting groove (36); The second sealing assembly (4) includes a waterproof cover (42) disposed on one side of the connecting ring (38).

2. The open-body mud barge hydraulic cylinder with a waterproof structure according to claim 1, characterized in that: A first sealing ring (310) is provided inside the connecting ring (38).

3. The open-body mud barge oil cylinder with a waterproof structure according to claim 1, characterized in that: A support block (41) is connected to the connecting ring (38), and the waterproof cover (42) is connected to the support block (41).

4. The open-body mud barge hydraulic cylinder with a waterproof structure according to claim 1, characterized in that: A second spring sheet (43) is provided inside the waterproof cover (42).

5. The open-body mud barge oil cylinder with a waterproof structure according to claim 4, characterized in that: One end of the second spring (43) is connected to the support block (41), and the other end of the second spring (43) is connected to the waterproof cover (42).

6. The open-body mud barge hydraulic cylinder with a waterproof structure according to claim 3, characterized in that: A second sealing ring (44) is provided on the side of the waterproof cover (42) away from the support block (41).

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