Multi-sealing assembly of hydraulic cylinder

Abstract

The utility model discloses a multiple sealing assembly of a hydraulic cylinder, which belongs to the technical field of sealing assemblies, and comprises a sealing cylinder body, a piston rod, a sealing ring, a sealing ring, a sealing ring and a sealing ring, and is characterized in that the sealing cylinder body is internally provided with the piston rod; the two outer sealing assemblies are arranged on the outer wall of one side of the sealing cylinder body, each outer sealing assembly comprises two fixing bases, a sliding rail, a sliding frame, two extension rods, two extension plates, a sealing rubbing cover and an adjusting part, and the two fixing bases are arranged on the outer wall of one side of the sealing cylinder body. According to the multiple sealing assembly of the hydraulic cylinder, the sliding rail is installed and fixed through the fixing base, the threaded rod is rotated, the limiting rod drives the sliding frame to move, the sealing rubbing cover wraps the piston rod, the outer wall of the piston rod is preliminarily cleaned, the sealing strip is further cleaned, the sealing effect is improved, and the sealing effect of the hydraulic cylinder is improved; meanwhile, the maintenance frequency is reduced, the structure is simple, and operation is facilitated.

Description

Technical Field

[0001] This utility model relates to the field of sealing component technology, and more specifically, to a multi-seal component for a hydraulic cylinder. Background Technology

[0002] A hydraulic cylinder (also known as an oil cylinder) is an actuator in a hydraulic system. It has the advantages of simple structure and high reliability. The working principle of a hydraulic cylinder is essentially an energy conversion device. It converts the input liquid pressure energy into the mechanical energy of the piston's linear motion. Specifically, the oil pressure energy input by the hydraulic pump is converted by the hydraulic cylinder to drive the working mechanism to make linear reciprocating or rotating (oscillating) motion.

[0003] A hydraulic cylinder typically consists of a cylinder barrel, cylinder head, piston, piston rod, sealing device, buffer device, and venting device. The cylinder barrel and cylinder head form the main structure of the hydraulic cylinder, while the piston and piston rod are the key components for achieving linear motion. The sealing device is used to prevent oil leakage, the buffer device is used to prevent the piston from hitting the cylinder head when it quickly returns to the end of its stroke, and the venting device is used to expel air from the hydraulic cylinder.

[0004] In existing hydraulic cylinders, the sealing device is usually used to prevent oil leakage. However, when the piston rod moves back and forth, it is exposed to the outside, and external debris or dust adheres to the outer wall. After the piston rod retracts, the debris or dust enters the hydraulic cylinder, affecting the long-term use of the hydraulic cylinder. Utility Model Content

[0005] 1. Technical problems to be solved

[0006] To address the problems existing in the prior art, the purpose of this utility model is to provide a multi-seal assembly for a hydraulic cylinder. By installing a fixed base and fixing a slide rail, rotating the threaded rod, and moving the sliding frame driven by the limiting rod, the sealing scraper cover will cover the piston rod, perform preliminary cleaning of the outer wall of the piston rod, and further clean the sealing strip to improve the sealing effect. This improves the sealing effect of the hydraulic cylinder, reduces the frequency of maintenance, and has a simple structure that is easy to operate.

[0007] 2. Technical Solution

[0008] To solve the above problems, the present invention adopts the following technical solution:

[0009] A hydraulic cylinder multi-seal assembly includes: a sealing cylinder body, with a piston rod installed inside the sealing cylinder body; and two external sealing assemblies, each of which is disposed on one side of the outer wall of the sealing cylinder body. Each external sealing assembly includes: two fixed seats, a slide rail, a sliding frame, two extension rods, two extension plates, a sealing scraper cover, and an adjusting component. The two fixed seats are disposed on one side of the outer wall of the sealing cylinder body. The slide rail is fixedly connected between the two fixed seats on one side of the outer wall. The sliding frame is slidably sleeved on the outer wall of the slide rail. The two extension rods are fixedly connected to one side of the outer wall of the sliding frame. The two extension plates are respectively fixedly connected to one end of the corresponding extension rod. The sealing scraper cover is fixedly connected between the two extension plates on one side of the outer wall. The adjusting component is disposed on one side of the slide rail for adjusting the sliding frame.

[0010] As a preferred embodiment of this utility model, the inner walls of both sealing scraper covers are provided with multiple recessed grooves, and sealing strips are fixedly connected between the inner walls of the multiple recessed grooves.

[0011] As a preferred embodiment of this utility model, extension frames are fixedly connected to the outer walls on both sides of the two slide rails.

[0012] As a preferred embodiment of this utility model, both of the adjusting components include: a threaded rod and two limiting rods. The threaded rod is rotatably connected to one side of the outer wall of the corresponding fixed seat and moves through the other fixed seat. The two limiting rods are fixedly connected between one side of the outer walls of the two fixed seats and move through the sliding frame.

[0013] In a preferred embodiment of this utility model, two springs are installed on one side of the outer wall of each of the two fixed seats, and one end of each of the four springs is fixedly connected to one side of the outer wall of the corresponding sliding frame.

[0014] As a preferred embodiment of this utility model, mounting holes are provided on one side of the outer wall of each of the four extension frames.

[0015] 3. Beneficial effects

[0016] Compared with the prior art, this utility model provides a multi-seal assembly for a hydraulic cylinder, which has the following advantages:

[0017] This hydraulic cylinder multi-seal assembly is mounted on a fixed base and fixed slide rail. By rotating the threaded rod, the sliding frame moves along the limiting rod. The sealing scraper cover covers the piston rod, performing initial cleaning of the outer wall of the piston rod. The sealing strip further cleans and improves the sealing effect, thus improving the sealing effect of the hydraulic cylinder. At the same time, it reduces the frequency of maintenance, and its simple structure facilitates operation. Attached Figure Description

[0018] Figure 1 This is a perspective view of the present utility model;

[0019] Figure 2 This is a rear perspective view of the external sealing assembly of this utility model;

[0020] Figure 3 This is a partial perspective view of the external sealing component of this utility model.

[0021] Explanation of the labels in the diagram:

[0022] 1. Sealing cylinder; 2. Piston rod; 3. External sealing assembly; 4. Fixed seat; 5. Extension frame; 6. Slide rail; 7. Sliding frame; 8. Extension rod; 9. Extension plate; 10. Sealing scraper cover; 11. Sealing strip; 12. Spring; 13. Limiting rod; 14. Threaded rod. Detailed Implementation

[0023] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present utility model, not all embodiments. All other embodiments obtained by those skilled in the art based on the embodiments of the present utility model without creative effort are within the scope of protection of the present utility model.

[0024] Example:

[0025] Please see Figure 1-3 A hydraulic cylinder multi-seal assembly includes: a sealing cylinder body 1, with a piston rod 2 installed inside the sealing cylinder body 1; and two external sealing assemblies 3, each of which is disposed on one side of the outer wall of the sealing cylinder body 1. Each external sealing assembly 3 includes: two fixed seats 4, a slide rail 6, a sliding frame 7, two extension rods 8, two extension plates 9, a sealing scraper cover 10, and an adjustment component. The two fixed seats 4 are disposed on one side of the outer wall of the sealing cylinder body 1. The slide rail 6 is fixedly connected between the two fixed seats 4 on one side of the outer wall. The sliding frame 7 is slidably sleeved on the outer wall of the slide rail 6. The two extension rods 8 are fixedly connected to one side of the outer wall of the sliding frame 7. The two extension plates 9 are respectively fixedly connected to one end of the corresponding extension rod 8. The sealing scraper cover 10 is fixedly connected between the two extension plates 9 on one side of the outer wall. The adjustment component is disposed on one side of the slide rail 6 for adjusting the sliding frame 7.

[0026] In a specific embodiment of this utility model, the hydraulic cylinder body is formed by a sealed cylinder body 1 and a piston rod 2. A slide rail 6 is then installed and fixed to one side of the sealed cylinder body 1 via a fixing seat 4. A sliding frame 7 is provided on the slide rail 6. By rotating the threaded rod 14, the sliding frame 7 moves along the slide rail 6 under the constraint of the limiting rod 13. Then, two sealing scraper covers 10 cover the piston rod 2. When the piston rod 2 reciprocates, the sealing scraper covers 10 perform initial cleaning of the outer wall of the piston rod 2. Afterward, the sealing strip 11 inside the sealing scraper covers 10 further cleans the piston rod and improves the sealing effect. After a period of use, the sealing scraper covers 10 are separated by the threaded rod 14 to quickly complete the cleaning, improving the sealing effect of the hydraulic cylinder and reducing the frequency of maintenance. The structure is simple and easy to operate.

[0027] Specifically, the inner walls of the two sealing scraper covers 10 are provided with multiple recessed grooves, and sealing strips 11 are fixedly connected between the inner walls of the multiple recessed grooves.

[0028] In this embodiment, a sealing strip 11 is provided by a recessed groove. The sealing strip 11 improves the sealing effect and also performs further cleaning.

[0029] Specifically, extension brackets 5 are fixedly connected to the outer walls on both sides of the two slide rails 6.

[0030] In this embodiment, the slide rail 6 is installed and fixed by the extension frame 5.

[0031] Specifically, both adjustment components include a threaded rod 14 and two limiting rods 13. The threaded rod 14 is rotatably connected to one side outer wall of the corresponding fixed seat 4 and moves through the other fixed seat 4. The two limiting rods 13 are fixedly connected between one side outer wall of the two fixed seats 4 and move through the sliding frame 7.

[0032] In this embodiment, the sliding frame 7 is moved linearly by rotating the threaded rod 14. The threaded rod 14 and the other fixed seat 4 are rotatably connected and there is no threaded connection between them.

[0033] Specifically, two springs 12 are installed on one side of the outer wall of each of the two fixed seats 4, and one end of each of the four springs 12 is fixedly connected to one side of the outer wall of the corresponding sliding frame 7.

[0034] In this embodiment, the sliding frame 7 is pushed by the spring 12 to improve its sealing effect.

[0035] Specifically, mounting holes are provided on one side of the outer wall of each of the four extension brackets 5.

[0036] In this embodiment, the extension frame 5 is installed and fixed through the mounting holes.

[0037] Working principle: The hydraulic cylinder body is formed by the sealed cylinder body 1 and the piston rod 2. Then, the slide rail 6 is installed and fixed to one side of the sealed cylinder body 1 through the fixed seat 4. The slide rail 6 is equipped with a sliding frame 7. By rotating the threaded rod 14, the sliding frame 7 will move along the slide rail 6 under the restriction of the limiting rod 13. Then, two sealing scraper covers 10 will cover the piston rod 2. When the piston rod 2 reciprocates, the sealing scraper covers 10 perform preliminary cleaning on the outer wall of the piston rod 2. Then, the sealing strip 11 inside the sealing scraper covers 10 performs further cleaning and improves the sealing effect. After a period of use, the sealing scraper covers 10 are separated by the threaded rod 14 to quickly complete the cleaning, improve the sealing effect of the hydraulic cylinder, reduce the frequency of maintenance, and have a simple structure that is easy to operate.

[0038] The control method of this utility model is to control the device by manually starting and stopping the switch. The wiring diagram of the power element and the supply of power are common knowledge in the field. Since this utility model is mainly used to protect mechanical devices, the control method and wiring layout will not be explained in detail.

[0039] 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 its improved concept should be covered within the protection scope of the present utility model.

Claims

1. A multi-seal assembly for a hydraulic cylinder, characterized in that, include: A sealed cylinder (1), wherein a piston rod (2) is installed inside the sealed cylinder (1); and Two external sealing components (3) are provided on one side of the outer wall of the sealing cylinder (1). Each external sealing component (3) includes: two fixed seats (4), a slide rail (6), a sliding frame (7), two extension rods (8), two extension plates (9), a sealing scraper cover (10), and an adjustment component. The two fixed seats (4) are provided on one side of the outer wall of the sealing cylinder (1). The slide rail (6) is fixedly connected between the two fixed seats (4) on one side of the outer wall. The sliding frame (7) is slidably sleeved on the outer wall of the slide rail (6). The two extension rods (8) are fixedly connected to one side of the outer wall of the sliding frame (7). The two extension plates (9) are respectively fixedly connected to one end of the corresponding extension rod (8). The sealing scraper cover (10) is fixedly connected between the two extension plates (9) on one side of the outer wall. The adjustment component is provided on one side of the slide rail (6) for adjusting the sliding frame (7).

2. The hydraulic cylinder multi-seal assembly according to claim 1, characterized in that: The inner walls of the two sealing scraper covers (10) are provided with multiple recessed grooves, and sealing strips (11) are fixedly connected between the inner walls of the multiple recessed grooves.

3. A hydraulic cylinder multi-seal assembly according to claim 2, characterized in that: Extension brackets (5) are fixedly connected to the outer walls on both sides of the two slide rails (6).

4. A hydraulic cylinder multi-seal assembly according to claim 3, characterized in that: Both of the adjustment components include a threaded rod (14) and two limiting rods (13). The threaded rod (14) is rotatably connected to one side of the outer wall of the corresponding fixed seat (4) and moves through the other fixed seat (4). The two limiting rods (13) are fixedly connected between one side of the outer walls of the two fixed seats (4) and move through the sliding frame (7).

5. A hydraulic cylinder multi-seal assembly according to claim 4, characterized in that: Two springs (12) are installed on one side of the outer wall of each of the two fixed seats (4), and one end of each of the four springs (12) is fixedly connected to one side of the outer wall of the corresponding sliding frame (7).

6. A hydraulic cylinder multi-seal assembly according to claim 5, characterized in that: Each of the four extension frames (5) has a mounting hole on one side of its outer wall.

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