Novel protective device for hydraulic oil cylinder of excavator

Abstract

The utility model relates to a novel protective device for a hydraulic oil cylinder of an excavator, which comprises an oil cylinder protective device, the oil cylinder protective device comprises an anti-impact corrugated pipe-shaped sheath, and a connecting flange is fixedly arranged on the left side of the outer wall of the anti-impact corrugated pipe-shaped sheath. Reinforcing ribs are evenly and fixedly installed on the portion, located on the right side of the connecting flange, of the outer wall of the anti-impact corrugated pipe-shaped protective sleeve, a buffer layer is fixedly installed on the inner wall of the anti-impact corrugated pipe-shaped protective sleeve, and by arranging the oil cylinder protection device and the design of the anti-impact corrugated pipe-shaped protective sleeve, external impact such as gravel impact can be effectively resisted; the hydraulic oil cylinder is protected against damage, the structural strength of the anti-impact corrugated pipe-shaped sheath is further enhanced through the arrangement of the reinforcing ribs, the overall anti-impact performance is improved, meanwhile, impact energy can be effectively absorbed through the buffer layer, and the hydraulic oil cylinder body is further protected.

Description

TECHNICAL FIELD

[0001] The utility model relates to engineering machinery technical field especially relates to a novel protection device of hydraulic cylinder of excavator. BACKGROUND

[0002] The hydraulic cylinder of excavator is exposed to harsh working conditions (such as stone impact, sand invasion, rain corrosion, etc.) for a long time, which can easily cause the oil cylinder rod to be scratched, the sealing element to be worn or the cylinder body to be corroded, and seriously affect the service life.

[0003] The existing protection device is mostly fixed dust cover or simple rubber sleeve, and the fixed dust cover or simple rubber sleeve has poor overall impact resistance, and hard impact can easily cause the protection structure to be deformed or broken, cannot effectively protect the hydraulic cylinder, and has insufficient overall sealing performance, and dust and moisture can easily invade the inside of the hydraulic cylinder, causing the hydraulic cylinder to be damaged.

[0004] Therefore, we propose a novel protection device of hydraulic cylinder of excavator. UTILITY MODEL CONTENTS

[0005] The utility model mainly solves the technical problem of the prior art, and provides a novel protection device of hydraulic cylinder of excavator.

[0006] In order to achieve the above purpose, the utility model adopts the following technical scheme, a novel protection device of hydraulic cylinder of excavator, including cylinder protection device, the cylinder protection device includes impact-resistant corrugated tubular sheath, the outer wall left side of impact-resistant corrugated tubular sheath is fixedly installed with the connecting flange, the outer wall of impact-resistant corrugated tubular sheath is uniformly fixedly installed with the reinforcing rib right side of connecting flange, the inner wall of impact-resistant corrugated tubular sheath is fixedly installed with the buffer layer, the inner wall of buffer layer is provided with hydraulic cylinder body, the left side wall of hydraulic cylinder body is fixedly installed with the first connecting piece, the output end of hydraulic cylinder body is fixedly installed with the second connecting piece, the inner wall right side of impact-resistant corrugated tubular sheath is fixedly installed with the sealing end cover.

[0007] As preferred, the outer wall of the hydraulic cylinder body is fixedly connected with the left side of the inner wall of the buffer layer, and the output end of the hydraulic cylinder body is movably connected with the right side of the inner wall of the buffer layer.

[0008] As preferred, the left side wall of the sealing end cover is fixedly connected with the output end of the hydraulic cylinder body.

[0009] As preferred, the material of the impact-resistant corrugated tubular sheath is polyurethane.

[0010] As preferred, the material of the reinforcing rib is high-strength nylon.

[0011] As preferred, the material of the buffer layer is closed-cell foam material.

[0012] Preferably, the material of the sealing end cover is polypropylene.

[0013] The utility model provides a novel excavator hydraulic oil cylinder's protection device.

[0014] 1、 this novel excavator hydraulic oil cylinder's protection device, through setting up oil cylinder protection device, through the design of anti -impact wave -shaped sheath, can effectively resist the external impact such as stone impact, protect hydraulic oil cylinder from damage, the setting of reinforcing rib further enhanced the structural strength of anti -impact wave -shaped sheath, improved the overall impact resistance, the existence of buffer layer can effectively absorb the impact energy, further protect the hydraulic oil cylinder body, the design of sealing end cover has guaranteed the sealing property of hydraulic oil cylinder, prevents dust, moisture and other impurities from invading the inside of oil cylinder, prolongs the service life of hydraulic oil cylinder.

[0015] 2、 this novel excavator hydraulic oil cylinder's protection device, through setting up anti -impact wave -shaped sheath, reinforcing rib, buffer layer and sealing end cover, anti -impact wave -shaped sheath, reinforcing rib, buffer layer and sealing end cover are made respectively with polyurethane, high -strength nylon, closed cell foam material and polypropylene, make this protection device have good wear resistance, corrosion resistance and anti -aging performance, can adapt to long -term use under the adverse working conditions. BRIEF DESCRIPTION OF DRAWINGS

[0016] Figure 1 It is the front whole structure schematic diagram of the utility model;

[0017] Figure 2 It is the left side wall surface structure schematic diagram of the utility model;

[0018] Figure 3 It is the right side wall surface structure schematic diagram of the utility model.

[0019] Legend: 10, oil cylinder protection device;11, anti -impact wave -shaped sheath;12, connecting flange;13, reinforcing rib;14, buffer layer;15, hydraulic oil cylinder body;16, first connecting piece;17, second connecting piece;18, sealing end cover. DETAILED DESCRIPTION

[0020] In order to more clearly illustrate the embodiment of the utility model or the technical scheme in prior art, the following will be briefly introduced the drawing needed to be used in the embodiment or prior art description. Obviously, the drawing in the following description is only exemplary, and for the ordinary skilled in the art, under the premise of not paying the creative labor, other implementation drawings can be obtained according to the provided drawing.

[0021] The structures, proportions, sizes, etc. shown in the specification are only used to cooperate with the content disclosed in the specification, to be understood and read by those skilled in the art, and are not used to limit the implementation conditions of the utility model, so they do not have technical substantive significance. Any modification of structure, change of proportion relationship or adjustment of size, without affecting the effects and purposes that can be achieved by the utility model, should still fall within the scope of the technical content disclosed by the utility model.

[0022] It should be noted that similar reference numbers and letters represent similar items in the following drawings, so once an item is defined in one drawing, it does not need to be further defined and explained in subsequent drawings.

[0023] In the description of the embodiments of the utility model, it should be noted that the terms "center", "upper", "lower", "inner", "outer", "side" and the like indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, or the orientation or positional relationship commonly used when the utility model product is used, which is only for the convenience of describing the utility model and simplifying the description, and does not indicate or imply that the indicated device or element must have a particular orientation, be constructed and operated in a particular orientation, therefore it cannot be understood as a limitation on the utility model. In addition, the terms "first", "second" and the like are only used to distinguish the description, and cannot be understood as indicating or implying relative importance.

[0024] In the description of the embodiments of the utility model, it should also be noted that, unless otherwise explicitly specified and limited, the terms "set", "installed", "connected", "connected" should be broadly understood, for example, it can be fixedly connected, or it can be detachably connected, or integrally connected; it can be mechanically connected, or it can be electrically connected; it can be directly connected, or it can be indirectly connected through an intermediate medium, or it can be the communication between two elements inside. For those skilled in the art, the specific meaning of the above terms in the embodiments of the utility model can be understood according to the specific circumstances.

[0025] The technical solutions in the embodiments of the utility model will be described clearly and completely in the following drawings in the embodiments of the utility model. Obviously, the described embodiments are only a part of the embodiments of the utility model, not 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 scope of protection of the utility model.

[0026] Embodiment one: a new type of excavator hydraulic oil cylinder protection device, as shown in Figure 1As shown, the oil cylinder protection device 10 includes an impact-resistant corrugated sheath 11, the outer wall of the impact-resistant corrugated sheath 11 is uniformly fixedly installed with a reinforcing rib 13 on the right side of the connecting flange 12, the material of the impact-resistant corrugated sheath 11 is polyurethane, and the material of the reinforcing rib 13 is high-strength nylon. By setting the oil cylinder protection device 10 and designing the impact-resistant corrugated sheath 11, external impacts such as stone impact can be effectively resisted, the hydraulic oil cylinder is protected from damage, the setting of the reinforcing rib 13 further enhances the structural strength of the impact-resistant corrugated sheath 11, improves the overall impact resistance, and the presence of the buffer layer 14 can effectively absorb impact energy, further protecting the hydraulic oil cylinder body 15. The design of the sealing end cover 18 ensures the sealing of the hydraulic oil cylinder, prevents impurities such as dust and moisture from entering the inside of the oil cylinder, and prolongs the service life of the hydraulic oil cylinder.

[0027] Example two: on the basis of example one, as Figure 2 shown, the outer wall of the impact-resistant corrugated sheath 11 is fixedly installed with a connecting flange 12 on the left side, the inner wall of the impact-resistant corrugated sheath 11 is fixedly installed with a buffer layer 14, the inner wall of the buffer layer 14 is provided with a hydraulic oil cylinder body 15, and the outer wall of the hydraulic oil cylinder body 15 is fixedly connected with the inner wall of the buffer layer 14 on the left side. The output end of the hydraulic oil cylinder body 15 is movably connected with the inner wall of the buffer layer 14 on the right side, the left side wall of the hydraulic oil cylinder body 15 is fixedly installed with a first connecting piece 16, and the material of the buffer layer 14 is closed cell foam material. By setting the impact-resistant corrugated sheath 11, the reinforcing rib 13, the buffer layer 14 and the sealing end cover 18, the impact-resistant corrugated sheath 11, the reinforcing rib 13, the buffer layer 14 and the sealing end cover 18 are respectively made of polyurethane, high-strength nylon, closed cell foam material and polypropylene, so that the protection device has good wear resistance, corrosion resistance and anti-aging performance, and can be used for long-term use in harsh working conditions.

[0028] Example three: on the basis of example one and example two, as Figure 3 shown, the output end of the hydraulic oil cylinder body 15 is fixedly installed with a second connecting piece 17, the inner wall of the impact-resistant corrugated sheath 11 is fixedly installed with a sealing end cover 18 on the right side, and the left side wall of the sealing end cover 18 is fixedly connected with the output end of the hydraulic oil cylinder body 15. The material of the sealing end cover 18 is polypropylene. By setting the impact-resistant corrugated sheath 11, the reinforcing rib 13, the buffer layer 14 and the sealing end cover 18, the impact-resistant corrugated sheath 11, the reinforcing rib 13, the buffer layer 14 and the sealing end cover 18 are respectively made of polyurethane, high-strength nylon, closed cell foam material and polypropylene, so that the protection device has good wear resistance, corrosion resistance and anti-aging performance, and can be used for long-term use in harsh working conditions.

[0029] The working principle of the utility model is: in the using process, when the excavator works, the hydraulic cylinder body 15 will be impacted and vibrated from different directions. The anti-impact corrugated pipe-shaped sheath 11 first bears these external impacts, and its high-strength polyurethane material can effectively resist the impact of hard objects such as gravel, preventing the hydraulic cylinder body 15 from being directly damaged. The setting of the reinforcing rib 13 further enhances the structural stability of the anti-impact corrugated pipe-shaped sheath 11, so that the overall device is not easy to deform or break when impacted. At the same time, the buffer layer 14 as the second layer of protection is made of closed-cell foam material, has good energy absorption characteristics, can further absorb and disperse impact energy, and reduce the impact and vibration of the hydraulic cylinder body 15. Finally, the sealing end cover 18 ensures the sealing of the hydraulic cylinder, and its polypropylene material has good chemical corrosion resistance, can effectively prevent impurities such as dust and moisture from entering the cylinder, thereby ensuring the normal operation of the hydraulic cylinder and prolonging the service life. In addition, the design of the connecting flange 12 makes the protective device can be conveniently installed and disassembled, and is convenient to maintain and replace.

[0030] The basic principle and main features of the utility model and the advantages of the utility model are shown and described above. Those skilled in the art should understand that the utility model is not limited by the above examples, and the above examples and descriptions in the specification are only to illustrate the principle of the utility model, and various changes and improvements can be made without departing from the spirit and scope of the utility model. These changes and improvements all fall within the scope of the claimed utility model. The scope of protection of the utility model is defined by the appended claims and their equivalents.

Claims

1. A novel protective device for excavator hydraulic cylinders, comprising a cylinder protective device (10), characterized in that: The hydraulic cylinder protection device (10) includes an impact-resistant corrugated tubular sleeve (11), a connecting flange (12) is fixedly installed on the left side of the outer wall of the impact-resistant corrugated tubular sleeve (11), reinforcing ribs (13) are uniformly fixedly installed on the right side of the outer wall of the impact-resistant corrugated tubular sleeve (11) located on the connecting flange (12), a buffer layer (14) is fixedly installed on the inner wall of the impact-resistant corrugated tubular sleeve (11), a hydraulic cylinder body (15) is provided on the inner wall of the buffer layer (14), a first connecting piece (16) is fixedly installed on the left side of the hydraulic cylinder body (15), a second connecting piece (17) is fixedly installed on the output end of the hydraulic cylinder body (15), and a sealing end cap (18) is fixedly installed on the right side of the inner wall of the impact-resistant corrugated tubular sleeve (11).

2. The protective device for the novel excavator hydraulic cylinder according to claim 1, characterized in that: The outer wall of the hydraulic cylinder body (15) is fixedly connected to the left side of the inner wall of the buffer layer (14), and the output end of the hydraulic cylinder body (15) is movably connected to the right side of the inner wall of the buffer layer (14).

3. The protective device for the novel excavator hydraulic cylinder according to claim 1, characterized in that: The left side wall of the sealing end cap (18) is fixedly connected to the output end of the hydraulic cylinder body (15).

4. The protective device for the novel excavator hydraulic cylinder according to claim 1, characterized in that: The material of the impact-resistant corrugated tubular sheath (11) is polyurethane.

5. The protective device for the novel excavator hydraulic cylinder according to claim 1, characterized in that: The reinforcing rib (13) is made of high-strength nylon.

6. The protective device for the novel excavator hydraulic cylinder according to claim 1, characterized in that: The buffer layer (14) is made of closed-cell foam material.

7. The protective device for the novel excavator hydraulic cylinder according to claim 1, characterized in that: The sealing end cap (18) is made of polypropylene.

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