Corrosion-resistant double-seal hydraulic oil cylinder

Abstract

The utility model relates to a corrosion-resistant double-seal hydraulic oil cylinder, which aims to solve the technical problem that when a piston rod goes in and out of a cylinder body at present, external corrosion components are easily attached to the piston rod and are brought into the cylinder body to cause damage, and comprises the cylinder body, the piston rod is arranged in the cylinder body, and the corrosion-resistant double-seal hydraulic oil cylinder further comprises a cleaning and scraping structure; the scraping structure is arranged at the push-out end of the cylinder body; the cleaning and scraping structure comprises a lantern ring, an L-shaped plate, a semi-ring plate A, a semi-ring plate B and a cleaning and scraping strip; the lantern ring is connected to the push-out end of the cylinder body in a sleeving mode. The two L-shaped plates are symmetrically arranged on the lantern ring; the semi-ring plate A is fixedly arranged at the longitudinal end of the L-shaped plate; the semi-ring plate B is arranged on the inner wall of the semi-ring plate A; the cleaning and scraping strip is fixedly arranged on the inner wall of the semi-ring plate B; the hydraulic cylinder has the advantages that when the piston rod retracts into the cylinder body, attachments on the outer wall of the retracted piston rod are scraped off through the cleaning and scraping strip.

Description

Technical Field

[0001] The utility model relates to the technical field of hydraulic cylinders, in particular to a corrosion-resistant double-sealed hydraulic cylinder. Background Art

[0002] A hydraulic cylinder is a hydraulic actuator that converts hydraulic energy into mechanical energy and performs linear reciprocating motion (or oscillating motion). It has a simple structure and reliable operation.

[0003] The working environment of a hydraulic cylinder is often relatively complex, and there are corrosive components in the environment. When the piston rod enters and exits the cylinder body, external corrosive components are easily attached to the piston rod and carried into the cylinder body, causing damage.

[0004] In view of this, we propose a corrosion-resistant double-sealed hydraulic cylinder. Content of the Utility Model

[0005] The purpose of the utility model is to overcome the deficiencies of the prior art, meet the actual needs, and provide a corrosion-resistant double-sealed hydraulic cylinder to solve the technical problem that when the piston rod enters and exits the cylinder body, external corrosive components are easily attached to the piston rod and carried into the cylinder body, causing damage.

[0006] To achieve the purpose of the utility model, the technical solution adopted by the utility model is: designing a corrosion-resistant double-sealed hydraulic cylinder, including a cylinder body, a piston rod is arranged in the cylinder body, and a scraping structure is further included;

[0007] The scraping structure is arranged at the pushing end of the cylinder body;

[0008] The scraping structure includes a collar, an L-shaped plate, a semi-circular plate A, a semi-circular plate B, and a scraping strip;

[0009] The collar is sleeved on the pushing end of the cylinder body;

[0010] Two L-shaped plates are symmetrically arranged on the collar;

[0011] The semi-circular plate A is fixedly arranged at the longitudinal end of the L-shaped plate;

[0012] The semi-circular plate B is arranged on the inner wall of the semi-circular plate A;

[0013] The scraping strip is fixedly arranged on the inner wall of the semi-circular plate B;

[0014] Wherein, the scraping strip is in contact and cooperation with the outer wall of the piston rod.

[0015] Preferably, a piston is movably arranged in the cylinder body, sealing rings are respectively sleeved at both ends of the piston, and the piston is sleeved on the piston rod.

[0016] Preferably, the semi-circular plate A and the semi-circular plate B are fixedly connected by two symmetrically arranged screws.

[0017] Preferably, an inclined surface is provided on the outer side of the scraping strip, and the inclined surface inclines outwards.

[0018] Preferably, an arc-shaped surface is provided on the inner side of the scraping strip.

[0019] Preferably, the scraping strip is in extrusion fit with the outer wall of the piston rod.

[0020] Preferably, two groups of connecting blocks are symmetrically and fixedly provided on the outer wall of the collar. Each group of connecting blocks has two. The two sides of the horizontal end of the L-shaped plate are respectively rotationally connected to the opposite sides of the two connecting blocks through rotating shafts. One side of the horizontal section of the L-shaped plate is in positioning cooperation with one of the connecting blocks through a positioning component;

[0021] The positioning component includes a fixed block, a threaded rod and a rotating handle;

[0022] The fixed block is fixedly provided on one side of the horizontal section of the L-shaped plate;

[0023] The threaded rod is threadedly penetrated through the fixed block;

[0024] The rotating handle is fixedly provided at the outer end of the threaded rod;

[0025] Wherein, the non-threaded section at the inner end of the threaded rod is inserted and matched with a jack formed on the top side or side of one of the connecting blocks.

[0026] Compared with the prior art, the beneficial effects of the present utility model are as follows:

[0027] 1. By providing a collar, an L-shaped plate, a semi-circular plate A, a semi-circular plate B and a scraping strip, the present utility model has the advantage that when the piston rod retracts into the cylinder body, the attachment on the outer wall of the retracted piston rod can be scraped off by the scraping strip, solving the problem that when the piston rod enters and exits the cylinder body, external corrosive components are easily attached to the piston rod and brought into the cylinder body, causing damage.

[0028] 2. By providing connecting blocks, rotating shafts, fixed blocks, threaded rods and rotating handles, the present utility model has the advantage of positioning the L-shaped plate in the horizontal or vertical direction and maintaining the stability of the L-shaped plate in the horizontal or vertical direction. Description of the Drawings

[0029] Figure 1 is the overall structural schematic diagram of the present utility model;

[0030] Figure 2 is the piston structural schematic diagram of the present utility model;

[0031] Figure 3 is the scraping structural schematic diagram of the present utility model;

[0032] Figure 4It is a schematic diagram of the cross-sectional connection structure of the semi-ring plate A, the semi-ring plate B and the cleaning strip of the utility model;

[0033] Figure 5 This is a schematic diagram of the connection structure of the positioning component of the utility model;

[0034] In the figure: 1. Cylinder body; 2. Piston rod; 3. Scraping structure; 4. Piston;

[0035] 301, collar; 302, connecting block; 303, L-shaped plate; 304, positioning assembly; 305, semi-ring plate A; 306, semi-ring plate B; 307, scraping strip; 308, screw;

[0036] 3031, shaft;

[0037] 3041, fixed block; 3042, threaded rod; 3043, rotating handle;

[0038] 3071, curved surface; 3072, inclined surface;

[0039] 401. Sealing ring. DETAILED DESCRIPTION

[0040] The utility model is further described below in conjunction with the accompanying drawings and embodiments:

[0041] Embodiment 1: A corrosion-resistant double-sealed hydraulic cylinder, see Figures 1 to 4 ;

[0042] It includes a cylinder body 1, a piston rod 2 is arranged in the cylinder body 1, a piston 4 is movably arranged in the cylinder body 1, sealing rings 401 are respectively sleeved at both ends of the piston 4, the piston 4 is sleeved on the piston rod 2, and also includes a scraping structure 3; the scraping structure 3 is arranged at the push-out end of the cylinder body 1;

[0043] The scraping structure 3 includes a collar 301, an L-shaped plate 303, a semi-ring plate A305, a semi-ring plate B306 and a scraping strip 307; the collar 301 is sleeved on the ejection end of the cylinder body 1; two L-shaped plates 303 are symmetrically arranged on the collar 301; the semi-ring plate A305 is fixed on the longitudinal end of the L-shaped plate 303; the semi-ring plate B306 is arranged on the inner wall of the semi-ring plate A305; the scraping strip 307 is fixed on the inner wall of the semi-ring plate B306; wherein the scraping strip 307 is in contact with the outer wall of the piston rod 2, and the scraping strip 307 is squeezed with the outer wall of the piston rod 2.

[0044] The utility model provides a sleeve ring 301, an L-shaped plate 303, a semi-ring plate A305, a semi-ring plate B306 and a scraper strip 307, so that when the piston rod 2 is retracted into the cylinder body 1, the scraper strip 307 can scrape off the attachments on the outer wall of the retracted piston rod 2, thereby solving the problem that when the piston rod 2 enters and exits the cylinder body 1, external corrosive components are easily attached to the piston rod 2 and brought into the cylinder body 1, causing damage.

[0045] The semi-ring plate A305 and the semi-ring plate B306 are fixedly connected by two symmetrically arranged screws 308. The screws 308 pass through the semi-ring plate A305 and are screwed into the screw holes of the semi-ring plate B306. The semi-ring plate B306 and the scraper strip 307 can be removed to facilitate the replacement of the scraper strip 307.

[0046] An inclined surface 3072 is provided on the outside of the scraping strip 307, and the inclined surface 3072 is inclined outward; when the piston rod 2 is retracted, the outside of the scraping strip 307 scrapes off the attachments on the outer wall of the piston rod 2, and the attachments are spread out along the inclined surface 3072, which does not affect the scraping and is also convenient for cleaning the scraped objects.

[0047] An arcuate surface 3071 is provided on the inner side of the cleaning strip 307 ; the cleaning strip 307 does not affect the contact with the outer wall of the piston rod 2 when rotating and closing.

[0048] Embodiment 2: A corrosion-resistant double-sealed hydraulic cylinder, see Figure 3 and Figure 5 ;

[0049] Two groups of connection blocks 302 are symmetrically fixed on the outer wall of the collar 301, and each group of connection blocks 302 is provided with two. The two sides of the horizontal end of the L-shaped plate 303 are rotatably connected to the opposite sides of the two connection blocks 302 through the rotating shaft 3031, and one side of the horizontal section of the L-shaped plate 303 is positioned and matched with a connection block 302 through the positioning component 304;

[0050] The positioning assembly 304 includes a fixed block 3041, a threaded rod 3042 and a rotating handle 3043; the fixed block 3041 is fixed on one side of the horizontal section of the L-shaped plate 303; the threaded rod 3042 is threadedly passed through the fixed block 3041; the rotating handle 3043 is fixed on the outer end of the threaded rod 3042; wherein, the unthreaded section at the inner end of the threaded rod 3042 is plugged into a socket opened on the top side or side of a connecting block 302.

[0051] The utility model has the advantage of positioning the L-shaped plate 303 in the horizontal or vertical direction and keeping the L-shaped plate 303 stable in the horizontal or vertical direction by arranging the connecting block 302, the rotating shaft 3031, the fixing block 3041, the threaded rod 3042 and the rotating handle 3043.

[0052] Working principle: When using the device of the present utility model, when the piston rod 2 retracts into the cylinder block 1, the outer wall of the piston rod 2 contacts the scraping strip 307, and the outer side of the scraping strip 307 shovels off the attachments on the outer wall of the piston rod 2. When replacing the scraping strip 307, rotate the turning handle 3043, the threaded rod 3042 moves outwards until the inner end of the threaded rod 3042 leaves the side jack of a connecting block 302, rotate the L-shaped plate 303 upwards, the L-shaped plate 303 rotates 90 degrees, rotate the turning handle 3043 in the reverse direction, the threaded rod 3042 moves inwards until the inner end of the threaded rod 3042 is inserted into the top jack of a connecting block 302 to position the L-shaped plate 303. At this time, the half-ring plate A 305, the half-ring plate B 306 and the scraping strip 307 rotate to the horizontal. Loosen and remove the screw 308, replace the half-ring plate B 306 and the scraping strip 307, and then install the new half-ring plate B 306 and the scraping strip 307 inside the half-ring plate A 305 and fix them with the screw 308. Rotate the turning handle 3043, the threaded rod 3042 moves outwards until the inner end of the threaded rod 3042 leaves the top jack of a connecting block 302, rotate the L-shaped plate 303 in the reverse direction to 90 degrees until the scraping strip 307 presses against the outer wall of the piston rod 2, rotate the turning handle 3043 in the reverse direction, the threaded rod 3042 moves inwards until the inner end of the threaded rod 3042 is inserted into the side jack of a connecting block 302 for positioning.

[0053] The embodiments disclosed in the present utility model are preferred embodiments, but not limited thereto. Those of ordinary skill in the art can easily understand the spirit of the present utility model based on the above embodiments and make different extensions and changes. However, as long as they do not depart from the spirit of the present utility model, they are within the protection scope of the present utility model.

Claims

1. A corrosion-resistant double-sealed hydraulic cylinder, comprising a cylinder body (1), wherein a piston rod (2) is arranged in the cylinder body (1), characterized in that: Also includes: A scraping structure (3) is arranged at the ejection end of the cylinder body (1); The scraping structure (3) comprises: A collar (301) sleeved on the ejection end of the cylinder body (1); Two L-shaped plates (303) are symmetrically arranged on the collar (301); A semi-annular plate A (305) is fixedly mounted on the longitudinal end of the L-shaped plate (303); A semi-ring plate B (306), arranged on the inner wall of the semi-ring plate A (305); A scraper strip (307) is fixedly mounted on the inner wall of the semi-annular plate B (306); Wherein, the scraper strip (307) is in contact with and fits with the outer wall of the piston rod (2).

2. A corrosion-resistant double-sealed hydraulic cylinder as claimed in claim 1, characterized in that: A piston (4) is movably arranged in the cylinder body (1), and sealing rings (401) are respectively sleeved at both ends of the piston (4), and the piston (4) is sleeved on the piston rod (2).

3. A corrosion-resistant double-sealed hydraulic cylinder as claimed in claim 1, characterized in that: The semi-ring plate A (305) and the semi-ring plate B (306) are fixedly connected by two symmetrically arranged screws (308).

4. A corrosion-resistant double-sealed hydraulic cylinder as claimed in claim 1, characterized in that: The outer side of the scraping strip (307) is provided with an inclined surface (3072), and the inclined surface (3072) is inclined outwards.

5. The corrosion-resistant double-sealed hydraulic cylinder according to claim 1, characterized in that: The inner side of the scraping strip (307) is provided with an arc-shaped surface (3071).

6. The corrosion-resistant double-sealed hydraulic cylinder according to claim 1, characterized in that: The scraping strip (307) is extruded and fitted with the outer wall of the piston rod (2).

7. The corrosion-resistant double-sealed hydraulic cylinder according to claim 1, characterized in that: Two groups of connection blocks (302) are symmetrically fixed on the outer wall of the collar (301), each group of the connection blocks (302) is provided with two, the two sides of the horizontal end of the L-shaped plate (303) are rotatably connected to the opposite sides of the two connection blocks (302) through the rotating shaft (3031), and one side of the horizontal section of the L-shaped plate (303) is positioned and matched with one of the connection blocks (302) through the positioning assembly (304); The positioning component (304) includes: A fixed block (3041) is fixedly mounted on one side of the horizontal section of the L-shaped plate (303); A threaded rod (3042) threadedly penetrates the fixing block (3041); A rotating handle (3043) is fixedly mounted on the outer end of the threaded rod (3042); The non-threaded section at the inner end of the threaded rod (3042) is plugged into and matched with a socket provided on the top or side of the connecting block (302).

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