Oil cylinder with dust cover structure

Abstract

The utility model discloses an oil cylinder with a dust cover structure. The oil cylinder comprises a cylinder body, a piston rod, a dust cover and a lug ring, a cylinder body protrusion is arranged on the side, close to the lug ring, of the cylinder body, and cylinder body fixing holes are evenly formed in the cylinder body One end of the piston rod is exposed out of the cylinder body and is provided with a lug ring; an inner fixing ring is arranged between the lug ring and the piston rod; an outer fixing ring is arranged on the outer side of the inner fixing ring; the dustproof cover is composed of a dustproof cover body, a middle ring body and a dustproof cover ring plate. The dustproof cover ring plates are arranged on the two sides of the dustproof cover bodies and integrally connected, and the two sets of dustproof cover bodies are arranged on the two sides of the middle ring body respectively and fixedly connected. A plurality of groups of ring plate through holes are uniformly formed in the dustproof cover ring plate, the dustproof cover ring plate on the outer side is connected with the outer fixing ring, and the dustproof cover ring plate on the inner side is connected with the cylinder body fixing hole through a bolt; and an opening and closing door is arranged on the middle ring body. The dustproof cover is convenient to disassemble, the movement condition of the piston rod can be seen from the inside under the condition that the dustproof cover is not disassembled, and convenience and high efficiency are achieved.

Description

Technical Field

[0001] The utility model relates to the field of oil cylinders, in particular to an oil cylinder with a dust cover structure. Background Art

[0002] The traditional dust cover uses a clamping hoop structure to fix the dust cover between the cylinder body and the earring, but the clamping hoop structure will become loose after long-term use, causing the dust cover to fall off; some use a fixed plate to connect the dust cover, and the fixed plate is arranged between the earring and the piston rod. When replacing the dust cover, the earring and the fixed plate need to be removed in turn before replacement. The earring has a certain weight, and it is time-consuming and laborious to remove it, and the installation efficiency is low; at the same time, after the dust cover is installed, the staff cannot observe the movement between the piston rod and the cylinder body. When it is necessary to observe this area, the dust cover needs to be removed, which is extremely inconvenient during use. Utility Model Content

[0003] The utility model aims to provide an oil cylinder with a dust cover structure which is convenient for disassembly and internal viewing.

[0004] The purpose of the utility model is achieved as follows: an oil cylinder with a dust cover structure, comprising a cylinder body, a piston rod, a dust cover, and earrings;

[0005] The cylinder body is provided with a cylinder body protrusion on the side close to the earring, and cylinder body fixing holes are evenly arranged on the cylinder body protrusion; one end of the piston rod is exposed outside the cylinder body and is provided with an earring, and the dust cover is arranged between the earring and the cylinder body; an inner fixing ring is arranged between the earring and the piston rod, and an outer fixing ring is arranged outside the inner fixing ring;

[0006] The dust cover is composed of a dust cover body, a middle ring body and a dust cover ring plate; the dust cover ring plates are placed on both sides of the dust cover body and connected as a whole, and the dust cover body is provided with two groups which are respectively placed on both sides of the middle ring body and fixedly connected; a plurality of groups of ring plate through holes are evenly arranged on the dust cover ring plate, the outer dust cover ring plate is connected to the outer fixing ring, and the inner dust cover ring plate is connected to the cylinder fixing hole by bolts; an opening and closing door is arranged on the middle ring body.

[0007] Preferably, the inner fixing ring and the outer fixing ring are provided with through holes in their centers, the outer diameter of the inner fixing ring is larger than the outer diameter of the earring, and the diameter of the through hole of the outer fixing ring is smaller than the outer diameter of the inner fixing ring.

[0008] Preferably, through holes with internal threads are evenly provided on the inner fixing ring and the outer fixing ring, and the outer fixing ring is placed on the side of the inner fixing ring close to the earring and fixedly connected by bolts.

[0009] Preferably, sealing gaskets are provided between the inner fixing ring and the outer fixing ring, between the outer fixing ring and the left dust cover ring plate, between the right dust cover ring plate and the cylinder body protrusion, and between the middle ring body and the dust cover body.

[0010] Preferably, one side of the opening and closing door is connected to the main body of the middle ring body by a hinge, and the other side is fixed to the middle ring body by a fixing buckle, and a sealing rubber is provided on the inner side of the opening and closing door.

[0011] Preferably, the outer fixing ring and the left dust cover ring plate, the middle ring body and the dust cover body are fixedly connected by bolts and nuts.

[0012] Compared with the prior art, the utility model is beneficial in that:

[0013] 1. The dust cover is split into a middle ring body and a dust cover body, so that an observation port can be opened on the middle ring body, thereby replacing the traditional integrated dust cover, making it convenient to observe the movement of the internal piston rod;

[0014] 2. When the dust cover is damaged, there is no need to disassemble all the earrings before installation, which improves the installation efficiency. At the same time, the bolt structure replaces the traditional clamp structure to avoid the dust cover falling off and is more stable to use. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a structural schematic diagram of the utility model.

[0016] Figure 2 It is a structural schematic diagram of the middle ring body of the utility model.

[0017] Among them, 1 cylinder body, 2 piston rod, 3 dust cover, 301 dust cover body, 302 middle ring body, 3021 opening and closing door, 303 dust cover ring plate, 4 earrings, 5 inner fixing ring, 6 outer fixing ring, DETAILED DESCRIPTION

[0018] The following is a description of the implementation of the present invention by means of specific embodiments. People familiar with the art can easily understand other advantages and effects of the present invention from the contents disclosed in this specification.

[0019] It should be noted that in the description of the present utility model, it should be noted that the terms "center", "up", "down", "left", "right", "vertical", "horizontal", "inside", "outside" and the like indicate positions or positional relationships based on the positions or positional relationships shown in the accompanying drawings, or the positions or positional relationships in which the utility model product is usually placed when in use, which are only for the convenience of describing the present utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present utility model. In addition, the terms "first", "second", "third" and the like are only used to distinguish the description, and cannot be understood as indicating or implying relative importance. Terms such as "horizontal", "vertical", and "overhanging" do not mean that the components are required to be absolutely horizontal or overhanging, but can be slightly tilted. For example, "horizontal" only means that its direction is more horizontal than "vertical", and does not mean that the structure must be completely horizontal, but can be slightly tilted.

[0020] In the description of the present invention, it is also necessary to explain that, unless otherwise clearly specified and limited, the terms "set", "install", "connect", and "connect" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection, it can be a mechanical connection, it can be an electrical connection, it can be a direct connection, it can be indirectly connected through an intermediate medium, and it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0021] like Figure 1-2 As shown, an oil cylinder with a dust cover structure comprises a cylinder body 1, a piston rod 2, a dust cover 3, and an earring 4; a cylinder body protrusion 101 is provided on the side of the cylinder body 1 close to the earring 4, and cylinder body fixing holes are evenly provided on the cylinder body protrusion 101; one end of the piston rod 2 is exposed outside the cylinder body 1 and is provided with an earring 4, and the dust cover 3 is arranged between the earring 4 and the cylinder body 1; an inner fixing ring 5 is arranged between the earring 4 and the piston rod 2, and an outer fixing ring 6 is arranged outside the inner fixing ring 5;

[0022] The dust cover 3 is composed of a dust cover body 301, a middle ring body 302 and a dust cover ring plate 303; the dust cover ring plates 302 are placed on both sides of the dust cover body 301 and are connected as a whole, and the dust cover body 301 is provided with two groups, which are respectively placed on both sides of the middle ring body 302 and fixedly connected; a plurality of groups of ring plate through holes are evenly arranged on the dust cover ring plate 302, the outer dust cover ring plate 303 is connected to the outer fixing ring 6, and the inner dust cover ring plate 303 is connected to the cylinder fixing hole by bolts; an opening and closing door 3021 is provided on the middle ring body 302.

[0023] like Figure 1As shown, through holes are provided in the centers of the inner fixing ring 5 and the outer fixing ring 6. The outer diameter of the inner fixing ring 5 is larger than the outer diameter of the earring 4, and the diameter of the through hole of the outer fixing ring 6 is smaller than the outer diameter of the inner fixing ring 5, so as to facilitate the docking installation of the dust cover.

[0024] like Figure 1 As shown, through holes with internal threads are evenly arranged on the inner fixing ring 5 and the outer fixing ring 6. The outer fixing ring 6 is placed on the side of the inner fixing ring 5 close to the earring 4 and is fixedly connected by bolts. When the dust cover is removed, the outer fixing ring can be quickly detached without removing the earring and the inner fixing ring, which greatly reduces the operation time and is convenient and quick.

[0025] like Figure 1 As shown, sealing gaskets are provided between the inner fixing ring 5 and the outer fixing ring 6, between the outer fixing ring 6 and the left dust cover ring plate 602, between the right dust cover ring plate 303 and the cylinder body protrusion 101, and between the middle ring body 302 and the dust cover body 301, so as to ensure the sealing of each connecting component and further prevent external impurities from entering.

[0026] like Figure 2 As shown, one side of the opening and closing door 3021 is connected to the main body of the middle ring body by a hinge, and the other side is fixed to the middle ring body by a fixing buckle. A sealing rubber is provided on the inner side of the opening and closing door. When the opening and closing door is closed, the sealing rubber on the inner side can be squeezed with the middle ring body to ensure the sealing of the opening and closing door after closing and prevent external impurities from entering.

[0027] like Figure 1 As shown, the outer fixing ring 5 and the left dust cover ring plate 303, the middle ring body 302 and the dust cover body 301 are fixedly connected by bolts and nuts. The bolt structure is more stable during connection and is not easy to fall off compared to the clamp structure, so it has higher stability.

[0028] The working principle of the utility model is explained as follows: during installation, the inner fixing ring is first squeezed and fixed to the piston rod through the earring, and then the assembled dust cover body (from the left: the outer fixing ring, the dust cover body, the middle ring body, and the dust cover body) is inserted from one side of the earring, and the inner side is connected to the cylinder body protrusion, and the outer fixing ring is connected to the inner fixing ring; when it is necessary to observe the movement of the piston rod, it is only necessary to open the opening and closing door without removing the dust cover, which is convenient and quick.

[0029] The above-described embodiments are merely descriptions of preferred implementations of the present invention, and are not intended to limit the concept and scope of the present invention. Without departing from the design concept of the present invention, various modifications and improvements made by ordinary personnel in the field to the technical solution of the present invention should fall within the protection scope of the present invention, and the technical contents of the present invention for protection have been fully recorded in the claims.

Claims

1. A cylinder with a dust cover structure, characterized in that: Including cylinder body, piston rod, dust cover and earrings; The cylinder body is provided with a cylinder body protrusion on the side close to the earring, and cylinder body fixing holes are evenly arranged on the cylinder body protrusion; one end of the piston rod is exposed outside the cylinder body and is provided with an earring, and the dust cover is arranged between the earring and the cylinder body; an inner fixing ring is arranged between the earring and the piston rod, and an outer fixing ring is arranged outside the inner fixing ring; The dust cover is composed of a dust cover body, a middle ring body and a dust cover ring plate; the dust cover ring plates are placed on both sides of the dust cover body and connected as a whole, and the dust cover body is provided with two groups which are respectively placed on both sides of the middle ring body and fixedly connected; a plurality of groups of ring plate through holes are evenly arranged on the dust cover ring plate, the outer dust cover ring plate is connected to the outer fixing ring, and the inner dust cover ring plate is connected to the cylinder fixing hole by bolts; an opening and closing door is arranged on the middle ring body.

2. The oil cylinder with a dust cover structure according to claim 1, characterized in that: The inner fixing ring and the outer fixing ring are provided with through holes in their centers. The outer diameter of the inner fixing ring is larger than the outer diameter of the earring, and the diameter of the through hole of the outer fixing ring is smaller than the outer diameter of the inner fixing ring.

3. The oil cylinder with a dust cover structure according to claim 2, characterized in that: The inner fixing ring and the outer fixing ring are evenly provided with through holes with internal threads. The outer fixing ring is placed on the side of the inner fixing ring close to the earring and is fixedly connected by bolts.

4. The oil cylinder with a dust cover structure according to claim 1, characterized in that: Sealing gaskets are arranged between the inner fixing ring and the outer fixing ring, between the outer fixing ring and the left dust cover ring plate, between the right dust cover ring plate and the cylinder body protrusion, and between the middle ring body and the dust cover body.

5. The oil cylinder with a dust cover structure according to claim 1, characterized in that: One side of the opening and closing door is connected to the main body of the middle ring body through a hinge, and the other side is fixed to the middle ring body through a fixing buckle. A sealing rubber is arranged on the inner side of the opening and closing door.

6. The oil cylinder with a dust cover structure according to claim 1, characterized in that: The outer fixing ring and the left dust cover ring plate, the middle ring body and the dust cover body are fixedly connected by bolts and nuts.

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