Slidable oil cylinder protective cover

Abstract

The utility model discloses a slidable oil cylinder protective cover, which belongs to the field of oil cylinder protective covers and comprises an upper cover plate and a lower cover plate, a front plate is arranged at the front end of the upper cover plate, a back plate is arranged at the rear end of the upper cover plate, and side plates are fixedly mounted on the edges of the surfaces of one sides of the front plate and the back plate through bolts. Folded edges are arranged on the upper surface of the lower cover plate, the bottom ends of the side plates are attached to the surfaces of the folded edges and penetrate into the inner side wall of the lower cover plate in a sliding and penetrating mode, the oil cylinder is effectively prevented from directly bearing impact loads through the upper cover plate and the lower cover plate, in order to further improve the protection performance, the lower cover plate is connected to the outer wall of the upper cover plate in a sleeving mode, and a double-protection system is formed; the lower cover plate is of an integrally-formed structure, a closed protection space is formed, invasion of solid particles such as dust and gravel can be resisted, liquid pollutants such as water mist and oil dirt can be effectively isolated, and the protection level of the oil cylinder is comprehensively improved.

Description

Technical Field

[0001] This utility model relates to the technical field of hydraulic cylinder protective covers, specifically a sliding hydraulic cylinder protective cover. Background Technology

[0002] A hydraulic cylinder, also known as a hydraulic cylinder, is a hydraulic actuator that converts hydraulic energy into mechanical energy and performs linear reciprocating motion. It has a simple structure and reliable operation. When used to achieve reciprocating motion, it eliminates the need for a speed reduction device and has no transmission backlash, resulting in smooth movement. Therefore, it is widely used in the hydraulic systems of various machines.

[0003] An investigation revealed that a Chinese utility model patent discloses a sliding hydraulic cylinder protective cover (publication number: CN202152474U), which includes an arc-shaped protective plate, a connecting plate, and a support block. The support block slides in conjunction with the arc-shaped protective plate, and the connecting plate is equipped with fixing screws. Its simple structure and ease of manufacturing effectively prevent dust particles from entering the hydraulic cylinder friction surface, extending the cylinder's service life. This solves the technical problems of high maintenance costs, high manpower consumption, and low work efficiency caused by the easy damage and frequent replacement of hydraulic cylinders in the past.

[0004] However, the protection range of the aforementioned protective plate is fixed, and its movement trajectory is limited to the predetermined track of the top protective plate. The protection range is strictly limited to a limited area. However, in the case of high-intensity material loading and unloading in sand and gravel yards and continuous operation of fully mechanized mining equipment in coal mines, the equipment has a wide operating range and the cylinder extension and retraction stroke is long. This single-pass protection cannot dynamically cover the entire stroke trajectory of the cylinder. When the piston rod is fully extended, the last half of the stroke is in an unprotected state, thus failing to protect the cylinder.

[0005] Therefore, this utility model provides a sliding hydraulic cylinder protective cover to solve the above problems. Utility Model Content

[0006] (a) Technical problems to be solved

[0007] This invention provides a sliding hydraulic cylinder protective cover, which aims to solve the problems mentioned in the background art.

[0008] (II) Technical Solution

[0009] To achieve the above objectives, this utility model provides the following technical solution: A protective cover is divided into an upper cover plate and a lower cover plate. The front end of the upper cover plate is a front plate, and the rear end of the upper cover plate is a back plate. Side plates are fixedly installed on one side edge of both the front plate and the back plate by bolts. The upper surface of the lower cover plate is provided with folded edges. The bottom end of the side plate is attached to the surface of the folded edges and slides into the inner wall of the lower cover plate. Sliding components are fixedly installed on both sides of one side surface of the side plate. The sliding components include a first guide rail fixedly installed on the surface of the side plate. A groove is provided at the bottom of one side surface of the first guide rail, and a locking end is provided in the groove at the bottom surface of the first guide rail. A second guide rail is fixedly installed on the inner wall of the lower cover plate. A groove A is opened at the bottom of one side surface of the second guide rail, and a groove B is opened on the side of the second guide rail away from groove A.

[0010] As a preferred technical solution of this application, a stop is provided at the bottom of one side surface of the slot A, a curved part is provided at the top of the inner wall of the slot B, and a locking component is movably engaged with the inner side wall of the second guide rail through the curved part.

[0011] As a preferred technical solution of this application, a middle track is movably engaged between the first guide rail and the second guide rail. A groove is provided in the middle of one side end face of the middle track, and a locking end is provided at the edge of the middle track and the groove in the same plane.

[0012] As a preferred technical solution of this application, one end of the snap-fit ​​end is movably abutted against the inner top wall of the slot A, and the sliding groove on one side of the middle track is slidably snapped into the second guide rail.

[0013] As a preferred technical solution of this application, the top of one side surface of the locking component is provided with an extension surface, and one side surface of the extension surface is provided with a snap-fit ​​groove, the inner side wall of the snap-fit ​​groove being movably snapped into the inclined surface of the locking end.

[0014] As a preferred technical solution of this application, the top of the inner sidewall of the snap-fit ​​groove is provided with a connecting part, and the bottom end of one side of the connecting part is adapted to the middle track.

[0015] (III) Beneficial Effects

[0016] 1. The upper and lower cover plates effectively prevent the hydraulic cylinder from directly bearing impact loads. To further improve the protection performance, the lower cover plate is fitted onto the outer wall of the upper cover plate, forming a double protection system. The lower cover plate adopts an integrated molding structure to form a sealed protective space, which can not only resist the intrusion of solid particles such as dust and sand, but also effectively isolate liquid pollutants such as water mist and oil, thus comprehensively improving the protection level of the hydraulic cylinder.

[0017] 2. The sliding component and locking component ensure that the first guide rail is firmly covered on the surface of the second guide rail. The smooth curved surface of the first guide rail deflects flying particles. The inner second guide rail serves as a stable base for movement. The two components work together to effectively prevent debris from getting stuck in the gaps between the rails, ensuring the smooth operation of the sliding component. Furthermore, the extended surface of the locking component has chamfered edges, allowing it to fit against the inner wall of the first guide rail. During relative sliding, it thoroughly removes attached dust and debris. This self-cleaning function, combined with the sealed protection of the double-layer guide rails, not only extends the maintenance cycle of the protective cover but also increases the service life of the hydraulic cylinder by reducing particle wear. This further enhances the dustproof performance and sliding smoothness, enabling the protective cover to demonstrate excellent protective performance in complex scenarios such as coal mine fully mechanized mining and open-pit mining. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the overall structure of a sliding hydraulic cylinder protective cover;

[0019] Figure 2 This is a schematic diagram of the upper cover plate in a sliding hydraulic cylinder protective cover.

[0020] Figure 3 This is a schematic diagram of the sliding component structure of a sliding hydraulic cylinder protective cover;

[0021] Figure 4 A schematic diagram of the disassembled sliding component of a sliding hydraulic cylinder protective cover;

[0022] Figure 5 A schematic diagram of the internal structure of the sliding component of a sliding hydraulic cylinder protective cover.

[0023] Figure 6 This is a schematic diagram of the locking component structure of a sliding hydraulic cylinder protective cover.

[0024] In the picture:

[0025] 1. Upper cover plate; 101. Front plate; 102. Back plate; 103. Side plate; 2. Lower cover plate; 201. Folded edge; 3. Sliding assembly; 301. First guide rail; 302. Locking end; 303. Second guide rail; 304. Slot A; 305. Slot B; 306. Stop part; 307. Bending part; 308. Middle track; 309. Slide groove; 310. Snap-fit ​​end; 4. Locking component; 401. Extension surface; 402. Snap-fit ​​groove; 403. Connecting part. Detailed Implementation

[0026] 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.

[0027] This utility model provides a protective cover, such as Figures 1 to 6 As shown, the protective cover consists of an upper cover plate 1 and a lower cover plate 2. The front end of the upper cover plate 1 is a front plate 101, and the rear end of the upper cover plate 1 is a back plate 102. Side plates 103 are bolted to the edge of one side surface of both the front plate 101 and the back plate 102. The upper surface of the lower cover plate 2 is provided with a folded edge 201. The bottom end of the side plate 103 is attached to the surface of the folded edge 201 and slides into the inner wall of the lower cover plate 2. Both sides of one side surface of the side plate 103 are fixed. A sliding component 3 is fixedly installed. The sliding component 3 includes a first guide rail 301 fixedly installed on the surface of the side plate 103. A cavity is provided at the bottom of one side surface of the first guide rail 301. A locking end 302 is provided in the cavity at the bottom surface of the first guide rail 301. A second guide rail 303 is fixedly installed on the inner side wall of the lower cover plate 2. A groove A304 is opened at the bottom of one side surface of the second guide rail 303. A groove B305 is opened on the side of the second guide rail 303 away from the groove A304.

[0028] The front plate 101 and back plate 102 of the upper cover plate 1 are stably connected by the side plate 103. They adopt a cross-stacked design and are fastened with bolts, which not only enhances the overall rigidity but also forms a multi-layer stress dispersion. When it is hit by a stone or scratched by a branch, the right-angled side of the rectangular structure can guide the impact force to the preset stress concentration area and achieve buffering through the elastic deformation of the material, effectively preventing the cylinder from directly bearing the impact load. To further improve the protective performance, the lower cover plate 2 is sleeved on the outer wall of the upper cover plate 1 to form a double protection system. The lower cover plate 2 adopts an integrated molding structure to form a sealed protective space, which can not only resist the intrusion of solid particles such as dust and sand, but also effectively isolate liquid pollutants such as water mist and oil, thus comprehensively improving the protection level of the cylinder.

[0029] A stop 306 is provided at the bottom of one side surface of slot A304, and a bend 307 is provided at the top of the inner wall of slot B305. A locking component 4 is movably engaged with the inner side wall of the second guide rail 303 through the bend 307. A middle track 308 is movably engaged between the first guide rail 301 and the second guide rail 303. A groove 309 is provided in the middle of one side end face of the middle track 308. A locking end 310 is provided at the edge of the middle track 308 and the groove 309 in the same plane. One end of 10 is movably abutted against the inner top wall of slot A304. The sliding groove 309 on one side of the middle track 308 is slidably engaged with the second guide rail 303. The top of one side surface of the locking component 4 is provided with an extension surface 401. One side surface of the extension surface 401 is provided with a locking groove 402. The inner side wall of the locking groove 402 is movably engaged with the inclined surface of the locking end 302. The top of the inner side wall of the locking groove 402 is provided with a connecting part 403. The bottom end of one side of the connecting part 403 is adapted to the middle track 308.

[0030] To improve the limited protection range of traditional protective covers, first guide rails 301 are added to both sides of the side plate 103. The locking end 302 at the bottom of the first guide rail 301 adopts an inverted trapezoidal wedge structure. When it is embedded in the lower cover plate 2, its beveled surface and the connecting part 403 on the surface of the locking component 4 form an interlocking contact, ensuring that the first guide rail 301 is firmly covered on the surface of the second guide rail 303. Its smooth curved surface is used to bounce off the splashing particles. The inner second guide rail 303 serves as a stable moving base. The two work together to effectively prevent gravel from getting stuck in the track gaps and ensure the smooth operation of the sliding component 3.

[0031] The second guide rail 303 is fixed to the inner wall of the lower cover plate 2. The middle rail 308, whose surface has been hardened, is provided with a U-shaped groove 309. When the piston rod drives the upper cover plate 1 to extend upward, the first guide rail 301 slides smoothly along the groove 309. During this process, the locking end 302 and the extension surface 401 of the locking component 4 form a dynamic anti-deviation. The extension surface 401 gradually presses down onto the surface of the middle rail 308 as the first guide rail 301 rises. The movement trajectory is corrected in real time by the elastic contact force to ensure zero deviation in the extension and retraction process. At the same time, the locking end 310 on one side of the middle rail 308 adopts a stepped guide design. When the first guide rail 301 starts, it first embeds into the groove A304 of the second guide rail 303 to form a progressive guide. This reduces the initial frictional resistance and can continuously tighten the protective cover in the subsequent stroke to eliminate the risk of exposed rails.

[0032] When the piston rod retracts and drives the upper cover plate 1 to reset, the edge of the extended surface 401 of the locking component 4 is chamfered, which can fit against the inner wall of the first guide rail 301. During the relative sliding process, the attached dust and debris are completely removed. This self-cleaning function, combined with the sealing protection of the double-layer guide rail, not only extends the maintenance cycle of the protective cover, but also improves the service life of the hydraulic cylinder by reducing particle wear, further enhancing the dustproof performance and sliding smoothness, so that the protective cover can show excellent protective performance in complex scenarios such as coal mine fully mechanized mining and open-pit mining.

[0033] The above description is only a preferred embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. Any equivalent substitutions or changes made by those skilled in the art within the technical scope disclosed in the present utility model, based on the technical solution and the inventive concept of the present utility model, should be included within the protection scope of the present utility model.

Claims

1. A sliding hydraulic cylinder protective cover, comprising an upper cover plate (1) and a lower cover plate (2), characterized in that: The front end of the upper cover plate (1) is a front plate (101), and the rear end of the upper cover plate (1) is a back plate (102). Side plates (103) are fixedly installed on the edge of one side surface of the front plate (101) and the back plate (102) by bolts. The upper surface of the lower cover plate (2) is provided with a folded edge (201). The bottom end of the side plate (103) is attached to the surface of the folded edge (201) and slides through the inner wall of the lower cover plate (2). Sliding components (3) are fixedly installed on both sides of one side surface of the side plate (103). The sliding assembly (3) includes a first guide rail (301) fixedly installed on the surface of the side plate (103). A cavity is provided at the bottom of one side surface of the first guide rail (301). A locking end (302) is provided in the cavity at the bottom surface of the first guide rail (301). A second guide rail (303) is fixedly installed on the inner side wall of the lower cover plate (2). A groove A (304) is opened at the bottom of one side surface of the second guide rail (303). A groove B (305) is opened on the side of the second guide rail (303) away from the groove A (304).

2. The sliding hydraulic cylinder protective cover according to claim 1, characterized in that: The bottom of one side surface of the slot A (304) is provided with a stop (306), the top of the inner wall of the slot B (305) is provided with a bend (307), and the inner side wall of the second guide rail (303) is movably engaged with a locking component (4) through the bend (307).

3. A sliding hydraulic cylinder protective cover according to claim 2, characterized in that: A middle track (308) is movably engaged between the first guide rail (301) and the second guide rail (303). A groove (309) is provided in the middle of one side end face of the middle track (308). A locking end (310) is provided at the edge of the middle track (308) and the groove (309) in the same plane.

4. A sliding hydraulic cylinder protective cover according to claim 3, characterized in that: One end of the snap-fit ​​end (310) is movably abutted against the inner top wall of the slot A (304), and the sliding groove (309) on one side of the middle track (308) is slidably snapped against the second guide rail (303).

5. A sliding hydraulic cylinder protective cover according to claim 2, characterized in that: The locking component (4) has an extension surface (401) on the top of one side surface, and a snap-fit ​​groove (402) is provided on one side surface of the extension surface (401). The inner wall of the snap-fit ​​groove (402) is movably snapped into the inclined surface of the locking end (302).

6. A sliding hydraulic cylinder protective cover according to claim 5, characterized in that: The inner wall of the snap-fit ​​groove (402) is provided with a connecting part (403), and one bottom end of the connecting part (403) is adapted to the middle track (308).

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