Hydraulic cylinder with external protection

Abstract

The utility model relates to a hydraulic oil cylinder with external protection structure belongs to hydraulic oil cylinder technical field, including hydraulic oil cylinder main part, spiral reinforced telescopic cover, honeycomb guard, hydraulic oil cylinder main part is provided with piston rod, hydraulic oil cylinder main part and piston rod all are installed with trunnion, the both ends of spiral reinforced telescopic cover are connected through screw with hydraulic oil cylinder main part and piston rod respectively, hydraulic oil cylinder main part evenly fixedly installed has dovetail groove, honeycomb guard is inserted in dovetail groove, and the limiting bottom plug is inserted in dovetail groove and is positioned through screw. The utility model, set up honeycomb guard compared with traditional solid steel plate or plastic guard can have better impact resistance, and the weight is lighter, adopts split type design to facilitate the damaged piece to disassemble and replace, honeycomb structure attenuates vibration energy, improves the anti -vibration performance, and the honeycomb guard shell can effectively resist the rigid impact to the oil cylinder, especially suitable for mine, metallurgy, engineering machinery and other severe environment.

Description

Technical Field

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

[0002] Effective external protection of hydraulic cylinders is key to extending their service life, preventing failures, and maintaining system performance. External damage to cylinders, such as piston rod scratches, cylinder dents, and worn or contaminated seals, are common causes of leakage, creep, reduced force, or even complete failure. Therefore, effective protection of hydraulic cylinders is necessary.

[0003] Traditional hydraulic cylinders face three major problems in harsh environments such as mining, metallurgy, and construction machinery: 1. The piston rod is easily scratched by hard particles, leading to seal failure; 2. The cylinder barrel deforms when impacted by falling objects; 3. The protective sleeve has a short lifespan and is difficult to maintain. To further improve the external protection function of hydraulic cylinders, a hydraulic cylinder with an external protective structure is proposed. It is equipped with a spiral reinforced telescopic sleeve, which can be quickly installed and removed from the top of the hydraulic cylinder for easy use. Compared with traditional bellows or canvas sleeves, the spiral reinforced telescopic sleeve has better structural strength and tear resistance. The spiral wire structure can guide directional deformation, effectively improving fatigue resistance. The honeycomb guard plate has better impact resistance than traditional solid steel plates or plastic guard plates, and is lighter in weight. The split design facilitates the disassembly and replacement of damaged parts, effectively resisting hard impacts on the cylinder. Utility Model Content

[0004] This utility model provides a hydraulic cylinder with an external protective structure, which solves the problems mentioned in the background. It can better protect the piston rod of the hydraulic cylinder, and is easy to disassemble and assemble. It can effectively resist impact and collision protection of the cylinder, and is a split design, which facilitates disassembly and maintenance of damaged parts.

[0005] The present invention provides the following solution to the above-mentioned technical problems: A hydraulic cylinder with an external protective structure includes a hydraulic cylinder body, a spiral reinforced telescopic sleeve, and a honeycomb guard plate. The hydraulic cylinder body is provided with a piston rod, and both the hydraulic cylinder body and the piston rod are equipped with trunnions. The two ends of the spiral reinforced telescopic sleeve are respectively connected to the hydraulic cylinder body and the piston rod by screws. The hydraulic cylinder body is uniformly and fixedly installed with dovetail grooves, the honeycomb guard plate is inserted into the dovetail grooves, and the limiting bottom plug is inserted into the dovetail grooves and positioned by screws.

[0006] Based on the above technical solution, the present invention can be further improved as follows.

[0007] Furthermore, the spiral reinforced telescopic sleeve includes a polyurethane telescopic sleeve base, a spiral wire, an upper connecting sleeve, and a lower connecting sleeve. The spiral wire is made of stainless steel and embedded in the polyurethane telescopic sleeve base. The two ends of the polyurethane telescopic sleeve base are respectively connected to the upper connecting sleeve and the lower connecting sleeve.

[0008] Furthermore, the inner walls of both the upper and lower connecting sleeves are provided with sealing gaskets.

[0009] Furthermore, the outer wall of the polyurethane telescopic sleeve substrate is coated with an oleophobic coating.

[0010] Furthermore, the honeycomb protective panel includes an aluminum alloy outer layer, a negative Poisson's ratio honeycomb interlayer, and a connecting strip. The negative Poisson's ratio honeycomb interlayer is placed inside the aluminum alloy outer layer, and the connecting strip is fixedly connected to the aluminum alloy outer layer.

[0011] Furthermore, the piston rod is fitted with a connecting support block corresponding to the spiral reinforced telescopic sleeve, and the hydraulic cylinder body is provided with a connecting slot corresponding to the spiral reinforced telescopic sleeve.

[0012] Furthermore, the diameter of the lower connecting sleeve is larger than that of the connecting support block and the connecting slot, and the diameter of the upper connecting sleeve is adapted to that of the connecting support block.

[0013] Furthermore, both the upper and lower connecting sleeves are provided with mounting holes, and both the connecting support block and the connecting slot are provided with screw slots corresponding to the mounting holes.

[0014] This utility model provides a hydraulic cylinder with an external protective structure, which has the following advantages:

[0015] 1. The spiral reinforced telescopic sleeve has better structural strength than the traditional corrugated pipe or canvas sleeve. The compressive strength of a single layer of flexible material (rubber / fabric) is <0.5MPa, while the compressive strength of the polyurethane + stainless steel spiral wire composite layer is >2MPa.

[0016] 2. This spiral-reinforced telescopic sleeve has better tear resistance. The spiral wire blocks the tear path, and local damage does not spread. The spiral structure guides directional deformation, with resistance ≤50N. The metal wire bears the main stress, which can effectively improve fatigue resistance. Thus, it can effectively protect the piston rod and is easy to disassemble and maintain from the top.

[0017] 3. Compared with traditional solid steel plates or plastic plates, the honeycomb guard plate has better impact resistance and is lighter in weight. The split design makes it easy to disassemble and replace damaged sections. The honeycomb structure attenuates vibration energy and improves vibration resistance. The honeycomb guard plate shell can effectively resist hard impacts on the hydraulic cylinder, and is especially suitable for harsh environments such as mining, metallurgy, and construction machinery.

[0018] The above description is merely an overview of the technical solution of this utility model. In order to better understand the technical means of this utility model and to implement it according to the contents of the specification, the preferred embodiments of this utility model are described in detail below with reference to the accompanying drawings. The specific implementation methods of this utility model are given in detail in the following embodiments and their accompanying drawings. Attached Figure Description

[0019] The accompanying drawings, which are included to provide a further understanding of the present invention and form part of this application, illustrate exemplary embodiments of the present invention and, together with the description thereof, serve to explain the present invention and do not constitute an undue limitation thereof. In the drawings:

[0020] Figure 1 A schematic diagram of a hydraulic cylinder with an external protective structure is provided for one embodiment of this utility model;

[0021] Figure 2 A front view of a hydraulic cylinder with an external protective structure provided for an embodiment of this utility model;

[0022] Figure 3 A schematic diagram of the structure of a spiral-reinforced telescopic sleeve in a hydraulic cylinder with an external protective structure is provided in one embodiment of this utility model;

[0023] Figure 4 This is a schematic diagram of the connection between the honeycomb guard plate and the limiting bottom plug in a hydraulic cylinder with an external protective structure, provided in an embodiment of the present invention.

[0024] Figure 5 This is a schematic diagram of the structure of a honeycomb guard plate in a hydraulic cylinder with an external protective structure, provided in an embodiment of the present invention.

[0025] Figure 6 This is a schematic diagram of a limiting bottom plug in a hydraulic cylinder with an external protective structure, provided as an embodiment of the present invention.

[0026] The attached diagram lists the components represented by each number as follows:

[0027] 1. Hydraulic cylinder body; 2. Spiral reinforced telescopic sleeve; 201. Polyurethane telescopic sleeve base; 202. Spiral wire; 203. Upper connecting sleeve; 204. Lower connecting sleeve; 3. Honeycomb protective plate; 301. Aluminum alloy outer layer; 302. Negative Poisson's ratio honeycomb interlayer; 303. Connecting insert; 4. Piston rod; 5. Trunnion; 6. Dovetail groove; 7. Limiting bottom plug; 8. Connecting support block; 9. Connecting slot; 10. Screw groove. Detailed Implementation

[0028] The following is in conjunction with the appendix Figure 1-6The principles and features of this utility model are described below. The examples given are for illustrative purposes only and are not intended to limit the scope of this utility model. The utility model is described more specifically in the following paragraphs by way of example with reference to the accompanying drawings. The advantages and features of this utility model will become clearer from the following description and claims. It should be noted that the drawings are in a very simplified form and use non-precise proportions, and are only used to facilitate and clarify the illustration of the embodiments of this utility model.

[0029] It should be noted that when a component is described as "fixed to" another component, it can be directly on the other component or may have a component in between. When a component is considered "connected to" another component, it can be directly connected to the other component or may have a component in between. When a component is considered "set on" another component, it can be directly set on the other component or may have a component in between. The terms "vertical," "horizontal," "left," "right," and similar expressions used in this document are for illustrative purposes only.

[0030] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention pertains. The terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. The term "and / or" as used herein includes any and all combinations of one or more of the associated listed items.

[0031] like Figure 1-2 As shown, a hydraulic cylinder with an external protective structure includes a hydraulic cylinder body 1, a spiral reinforced telescopic sleeve 2, and a honeycomb guard plate 3. The hydraulic cylinder body 1 is provided with a piston rod 4. Both the hydraulic cylinder body 1 and the piston rod 4 are equipped with trunnions 5. The two ends of the spiral reinforced telescopic sleeve 2 are respectively connected to the hydraulic cylinder body 1 and the piston rod 4 by screws. The hydraulic cylinder body 1 is uniformly and fixedly installed with dovetail grooves 6. The honeycomb guard plate 3 is inserted into the dovetail grooves 6. The limiting bottom plug 7 is inserted into the dovetail grooves 6 and positioned by screws. The piston rod 4 is equipped with a connecting support block 8 corresponding to the spiral reinforced telescopic sleeve 2. The hydraulic cylinder body 1 is provided with a connecting slot 9 corresponding to the spiral reinforced telescopic sleeve 2.

[0032] like Figure 3As shown, the spiral reinforced telescopic sleeve 2 includes a polyurethane telescopic sleeve base 201, a spiral wire 202, an upper connecting sleeve 203, and a lower connecting sleeve 204. The spiral wire 202 is made of 304 stainless steel and is embedded in the polyurethane telescopic sleeve base 201. The two ends of the polyurethane telescopic sleeve base 201 are connected to the upper connecting sleeve 203 and the lower connecting sleeve 204 respectively. The inner walls of the upper connecting sleeve 203 and the lower connecting sleeve 204 are provided with sealing gaskets. The outer wall of the polyurethane telescopic sleeve base 201 is coated with an oleophobic coating. The diameter of the lower connecting sleeve 204 is larger than that of the connecting support block 8 and the connecting slot 9, and the diameter of the upper connecting sleeve 203 is adapted to that of the connecting support block 8. The upper connecting sleeve 203 and the lower connecting sleeve 204 are provided with mounting holes. The connecting support block 8 and the connecting slot 9 are provided with screw slots 10 corresponding to the mounting holes.

[0033] like Figure 4-6 As shown, the honeycomb protective panel 3 includes an aluminum alloy outer layer 301, a negative Poisson's ratio honeycomb interlayer 302, and a connecting strip 303. The negative Poisson's ratio honeycomb interlayer 302 is placed inside the aluminum alloy outer layer 301, and the connecting strip 303 is fixedly connected to the aluminum alloy outer layer 301.

[0034] The specific working principle and usage method of this utility model are as follows: The spiral reinforced telescopic sleeve 2 is fitted onto the piston rod 4 from the top of the hydraulic cylinder body 1. The lower connecting sleeve 204 can be inserted into the connecting slot 9 and connected by screws. The upper connecting sleeve 203 can be fitted into the screw slot 10 and connected by screws. The spiral wire 202 is embedded in the polyurethane telescopic sleeve matrix 201, which can effectively improve the structural strength, tear resistance and fatigue resistance. The polyurethane telescopic sleeve matrix 201 covered with an oleophobic coating can prevent external damage to the piston rod 4 and prevent contamination.

[0035] The connecting strip 303 can be snapped into the dovetail groove 6 of the hydraulic cylinder body 1, and the aluminum alloy outer layer 301 can be fitted onto the outer wall of the hydraulic cylinder body 1. After the connecting strip 303 is snapped into the dovetail groove 6, the limiting bottom plug 7 blocks the inlet of the dovetail groove 6. The limiting bottom plug 7 is positioned by screws, so that the honeycomb guard plate 3 can be stably installed on the outer wall of the hydraulic cylinder body 1 to effectively protect the cylinder part.

[0036] The interface surface of the hydraulic pump station connected to the hydraulic cylinder body 1 is not covered by the honeycomb protective plate 3. During use, the honeycomb protective plate 3 covers the outward side that will be impacted, corresponding to the inside of the equipment.

[0037] The above description is merely a preferred embodiment of this utility model and is not intended to limit the utility model in any way. Those skilled in the art can readily implement this utility model based on the accompanying drawings and the above description. However, any modifications, alterations, or variations made by those skilled in the art without departing from the scope of the utility model's technical solution, utilizing the disclosed technical content, are equivalent embodiments of this utility model. Furthermore, any equivalent changes, alterations, or variations made to the above embodiments based on the essential technology of this utility model are still within the protection scope of this utility model's technical solution.

Claims

1. A hydraulic cylinder with an external protective structure, comprising a hydraulic cylinder body (1), a spiral reinforced telescopic sleeve (2), a honeycomb guard plate (3), and a limiting bottom plug (7), characterized in that: The hydraulic cylinder body (1) is provided with a piston rod (4). Both the hydraulic cylinder body (1) and the piston rod (4) are equipped with trunnions (5). The two ends of the spiral reinforced telescopic sleeve (2) are respectively connected to the hydraulic cylinder body (1) and the piston rod (4) by screws. The hydraulic cylinder body (1) is uniformly and fixedly installed with dovetail grooves (6). The honeycomb guard plate (3) is inserted into the dovetail groove (6). The limiting bottom plug (7) is inserted into the dovetail groove (6) and positioned by screws.

2. A hydraulic cylinder with an external protective structure according to claim 1, characterized in that, The spiral reinforced telescopic sleeve (2) includes a polyurethane telescopic sleeve base (201), a spiral wire (202), an upper connecting sleeve (203), and a lower connecting sleeve (204). The spiral wire (202) is made of 304 stainless steel and is embedded in the polyurethane telescopic sleeve base (201). The two ends of the polyurethane telescopic sleeve base (201) are connected to the upper connecting sleeve (203) and the lower connecting sleeve (204) respectively.

3. A hydraulic cylinder with an external protective structure according to claim 2, characterized in that, The inner walls of the upper connecting sleeve (203) and the lower connecting sleeve (204) are both provided with sealing gaskets.

4. A hydraulic cylinder with an external protective structure according to claim 2, characterized in that, The outer wall of the polyurethane telescopic sleeve substrate (201) is coated with an oleophobic coating.

5. A hydraulic cylinder with an external protective structure according to claim 1, characterized in that, The honeycomb protective panel (3) includes an aluminum alloy outer layer (301), a negative Poisson's ratio honeycomb interlayer (302), and a connecting strip (303). The negative Poisson's ratio honeycomb interlayer (302) is placed inside the aluminum alloy outer layer (301), and the connecting strip (303) is fixedly connected to the aluminum alloy outer layer (301).

6. A hydraulic cylinder with an external protective structure according to claim 1, characterized in that, The piston rod (4) is fitted with a connecting block (8) corresponding to the spiral reinforced telescopic sleeve (2), and the hydraulic cylinder body (1) is provided with a connecting slot (9) corresponding to the spiral reinforced telescopic sleeve (2).

7. A hydraulic cylinder with an external protective structure according to claim 2, characterized in that, The lower connecting sleeve (204) has a diameter larger than that of the connecting support block (8) and the connecting slot (9) to be compatible, and the upper connecting sleeve (203) has a diameter compatible with that of the connecting support block (8).

8. A hydraulic cylinder with an external protective structure according to claim 7, characterized in that, The upper connecting sleeve (203) and the lower connecting sleeve (204) are both provided with mounting holes, and the connecting support block (8) and the connecting slot (9) are both provided with screw slots (10) corresponding to the mounting holes.

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