A static seal structure of a cylinder guide sleeve

Abstract

The utility model relates to hydraulic pressure oil cylinder technical field, and specifically is a kind of oil cylinder guide sleeve static seal structure, including the rubber ring being installed in the inside of guide sleeve, the right side of rubber ring is arranged with the support ring of guide sleeve joint installation, the left side of rubber ring is arranged with the dustproof ring of joint installation in the open mouth of guide sleeve, the outside of dustproof ring is slidably attached with annular block, the detection assembly capable of detecting the oil seepage of rubber ring is arranged on dustproof ring, the detection assembly includes multiple and is inserted with dustproof ring the plug rod of swing, one end of plug rod is fixed with sponge column. In the utility model, by installing dustproof ring to the open mouth of guide sleeve, the cumbersome step of installing dustproof ring by twisting or folding is saved, which helps to improve the convenience of dustproof ring installation, the oil liquid seepage from rubber ring can be absorbed by sponge column, and whether the oil liquid is absorbed by sponge column is extracted plug rod to view, to indirectly assess whether rubber ring needs to be replaced.

Description

Technical Field

[0001] This utility model relates to the field of hydraulic cylinder technology, specifically a static sealing structure for a cylinder guide sleeve. Background Technology

[0002] A guide sleeve is usually installed and fixed near the piston rod extension end of the cylinder barrel. The guide sleeve can not only guide the piston rod to move in a straight line, but also prevent hydraulic oil from leaking between the guide sleeve and the cylinder barrel. The specific technical solution to prevent hydraulic oil leakage is to install a static sealing structure inside the guide sleeve. The existing sealing structure mainly includes a rubber ring for sealing the oil and a dust ring to prevent external dust from entering the cylinder barrel.

[0003] Currently, dust seals are generally installed inside the cylinder port. When installing a dust seal, the user needs to twist and fold it before pushing it into the deep groove inside the guide sleeve. When replacing a dust seal, a tool is needed to pull it out from inside the guide sleeve. This is not conducive to improving the ease of installation and removal of dust seals on the sealing structure. Furthermore, most sealing structures lack a mechanism to detect whether the rubber ring is leaking oil due to wear or aging, making it inconvenient for users to replace damaged rubber rings in a timely manner. Utility Model Content

[0004] The purpose of this utility model is to provide a static sealing structure for a hydraulic cylinder guide sleeve to solve the problems mentioned in the background art.

[0005] To achieve the above objectives, this utility model provides the following technical solution:

[0006] A static sealing structure for a hydraulic cylinder guide sleeve includes:

[0007] A rubber ring is snapped into the inside of the guide sleeve to prevent hydraulic oil leakage; a notch is provided on one side of the rubber ring.

[0008] A support ring is arranged to the right of the rubber ring. The support ring is snapped into the guide sleeve and can support and guide the piston rod to slide linearly.

[0009] The dustproof ring is movable and snaps into the open position of the guide sleeve, which can prevent external dust from entering the guide sleeve and contaminating the cylinder. The outer side of the dustproof ring is slidably attached to an annular block.

[0010] The detection component is capable of detecting whether there is oil leakage at the position of the rubber ring. The detection component includes multiple plugs that are movably inserted into the dust ring, and a sponge column is fixed at one end of each plug.

[0011] The retaining ring is detachably installed and fixed to the outside of the guide sleeve opening, which enables the annular block to tightly compress the dustproof ring.

[0012] Furthermore, a buffer pad is snapped between the support ring and the guide sleeve.

[0013] Furthermore, the guide sleeve has an oil seepage groove pre-set on the left side near the rubber ring, and the sponge column is arranged in the oil seepage groove and in contact with the rubber ring.

[0014] Furthermore, multiple connecting ears are evenly fixed on the outer side of the fixing ring, and studs are detachably fixed between the connecting ears and the guide sleeve.

[0015] Furthermore, the dustproof ring is made of rubber, and multiple movable slots are formed through the dustproof ring, with the insertion rod inserted into the movable slots.

[0016] Furthermore, one end of the insertion rod is fixed with a toggle block, and the fixing ring is arranged on the outside of the dustproof ring and the annular block.

[0017] Furthermore, the inner side of the fixing ring is evenly provided with a plurality of circular holes that can accommodate the actuating block, and the outer ring side of the dustproof ring and the inner ring side of the annular block are both frustum-shaped inclined surfaces.

[0018] Compared with the prior art, the beneficial effects of this utility model are:

[0019] 1. By movably fitting the dustproof ring onto the open position of the guide sleeve, and then using a retaining ring to position and fix the dustproof ring onto the guide sleeve, the installation process of the dustproof ring is simplified. This eliminates the need to push the sealing ring into the deep groove inside the guide sleeve, allowing it to be directly fitted onto the end face of the guide sleeve. This reduces the risk of damage caused by twisting or folding the dustproof ring. By fitting an annular block on the outside of the dustproof ring, and designing the contact surfaces between the dustproof ring and the annular block as frustum-shaped curved surfaces, after the retaining ring is installed, the retaining ring can squeeze the annular block towards the guide sleeve, causing the annular block to squeeze the dustproof ring from the periphery. This keeps the dustproof ring tending to contract towards the piston rod, helping to ensure that the dustproof ring is tightly fitted between the piston rod and the guide sleeve, further improving the dustproof sealing performance of the dustproof ring.

[0020] 2. By removing the retaining ring and taking off the ring block, the dust seal on the guide sleeve can be directly replaced, saving the need for traditional disassembly of the internal structure of the guide sleeve and significantly reducing the maintenance time and cost of the dust seal.

[0021] 3. By inserting a rod into the dust seal, with a sponge column at one end of the rod inserted into one side of the rubber ring, the retaining ring can be removed. The rod near the bottom of the cylinder can be pulled out of the guide sleeve. If the rubber ring is aged, oil will seep along the inner ring side of the rubber ring to the oil leakage groove. At this time, the sponge column will absorb some of the oil. Observing whether the sponge column absorbs hydraulic oil can indirectly determine whether the rubber ring is aged and leaking oil, making it convenient for users to know whether the rubber ring needs to be replaced. Attached Figure Description

[0022] Figure 1 This is a schematic diagram of the overall structure of this utility model, piston rod, and guide sleeve;

[0023] Figure 2 This is a schematic diagram of the overall structure of the utility model and the guide sleeve;

[0024] Figure 3 This is a schematic diagram of the fixing ring structure in this utility model;

[0025] Figure 4 This is a cross-sectional view of the static sealing structure of this utility model;

[0026] Figure 5 This is a utility model Figure 4 A magnified view of the structure at point A in the middle;

[0027] Figure 6 This is a schematic diagram of the disassembled structure of the annular block and dustproof ring in this utility model.

[0028] In the diagram: 100, rubber ring; 110, notch; 120, oil seepage groove; 200, support ring; 210, buffer pad; 300, dustproof ring; 310, annular block; 311, movable groove; 400, detection component; 410, insertion rod; 420, sponge column; 500, fixing ring; 510, stud; 520, round hole. Detailed Implementation

[0029] 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.

[0030] Example 1, please refer to Figure 1 - Figure 6In this embodiment of the present invention, a static sealing structure for a hydraulic cylinder guide sleeve includes a rubber ring 100 installed inside the guide sleeve. The rubber ring 100 prevents hydraulic oil leakage. A notch 110 is provided on one side of the rubber ring 100. A support ring 200 is arranged on the right side of the rubber ring 100 and is snapped onto the guide sleeve. The support ring 200 supports and guides the linear sliding of the piston rod. A dustproof ring 300 is arranged on the left side of the rubber ring 100 and is snapped onto the opening of the guide sleeve. The dustproof ring 300 prevents external dust from entering. The guide sleeve contaminates the cylinder. An annular block 310 slides against the outer side of the dustproof ring 300. A detection component 400 is provided on the dustproof ring 300 to detect oil leakage from the rubber ring 100. The detection component 400 includes multiple insert rods 410 that are movably inserted into the dustproof ring 300. A sponge column 420 is fixed to one end of each insert rod 410. A fixing ring 500 is arranged on the outer side of the dustproof ring 300 and the annular block 310 to be detachably and fixedly installed with the guide sleeve shell. The fixing ring 500 can make the annular block 310 tightly squeeze the dustproof ring 300.

[0031] Specifically, by transferring the dustproof ring 300, which is traditionally installed inside the guide sleeve, to the opening of the guide sleeve via the fixing ring 500, the cumbersome steps of twisting or folding the dustproof ring 300 during installation are eliminated. The dustproof ring 300 can be directly replaced by removing the fixing ring 500, which helps to improve the convenience of dustproof ring 300 installation. A plug rod 410 is movably inserted into the dustproof ring 300. A sponge column 420 is fixed at the position where the plug rod 410 is inserted into the rubber ring 100. The sponge column 420 can absorb the oil seeping from the rubber ring 100. Users can indirectly assess whether the rubber ring 100 needs to be replaced by pulling out the plug rod 410 to check whether the sponge column 420 has absorbed oil. This allows users to promptly identify and replace the damaged rubber ring 100.

[0032] like Figure 2 and Figure 4 As shown, in this embodiment, an annular buffer pad 210 is snapped between the support ring 200 and the guide sleeve. The support ring 200 can withstand the lateral and radial forces generated by the piston rod during its movement, preventing the piston rod from bending or deforming due to these forces. At the same time, the buffer pad 210 can absorb and disperse the impact force of the piston rod moving rapidly on the support ring 200.

[0033] like Figure 4 and Figure 5 As shown, in this embodiment, an annular oil seepage groove 120 is pre-set on the left side of the guide sleeve near the rubber ring 100, and the sponge column 420 is arranged in the oil seepage groove 120 and in contact with the rubber ring 100.

[0034] In this embodiment, the number of insert rods 410 can be determined as needed. For cylinders that are frequently adjusted, multiple insert rods 410 can be installed in a ring at equal angles on the guide sleeve. The multiple sponge columns 420 on the multiple insert rods 410 can be distributed at different positions on one side of the rubber ring 100, increasing the probability of the sponge columns 420 contacting the seeping oil. For cylinders that have been disassembled, the cylinder can be manually rotated, and the guide sleeve rotates simultaneously with the cylinder, which helps the hydraulic oil at the seeping ring groove 120 to quickly contact the sponge columns 420. For cylinders that have been stationary for a long time, only one insert rod 410 can be inserted and installed at the bottom of the guide sleeve. The hydraulic oil that seeps into the seeping ring groove 120 can gather along the seeping ring groove 120 towards the lowest sponge column 420, which facilitates the absorption of oil by the sponge column 420.

[0035] like Figure 5 As shown, in this embodiment, an annular notch 110 is provided on one side of the rubber ring 100. When the oil impacts the position of the rubber ring 100, the position of the notch 110 will cause the rubber ring 100 to move further away from the position of the notch 110 and press against the piston rod, thereby improving the sealing performance. Specifically, the rubber ring 100 can be the lip-shaped rubber ring 100 of the prior art. The detailed working principle of the lip-shaped rubber ring 100 will not be described in detail.

[0036] like Figure 1 - Figure 3 As shown, in this embodiment, multiple connecting ears are evenly fixed on the outer side of the fixing ring 500. A stud 510 is detachably fixed between the connecting ears and the guide sleeve. By tightening the stud 510, the fixing ring 500 can be installed on the outer side of the dustproof ring 300 and the annular block 310, so that the annular block 310 presses and fixes the dustproof ring 300 to the opening of the guide sleeve, sealing the space between the piston rod and the guide sleeve.

[0037] like Figure 2 and Figure 6 As shown, in this embodiment, the dustproof ring 300 is made of rubber, and multiple movable grooves 311 are provided through the dustproof ring 300. The insertion rod 410 is inserted and arranged inside the movable grooves 311. During the process of the annular block 310 pressing and installing the dustproof ring 300, the movable grooves 311 can prevent the dustproof ring 300 from being deformed by pressure and excessively pressing the insertion rod 410.

[0038] In this embodiment, one end of the insertion rod 410 is fixed with a toggle block for easy removal of the insertion rod 410, and the fixing ring 500 is arranged on the outside of the dustproof ring 300 and the annular block 310, so that the annular block 310, the dustproof ring 300 and the insertion rod 410 are installed as a whole on the guide sleeve.

[0039] like Figure 6As shown, in this embodiment, both the outer ring side of the dustproof ring 300 and the inner ring side of the annular block 310 are frustum-shaped inclined surfaces, thereby enabling the dustproof ring 300 to be tightly sealed and fixed between the guide sleeve and the piston rod when the annular block 310 is pressed towards the guide sleeve.

[0040] like Figure 3 As shown, in this embodiment, the inner side of the fixing ring 500 is evenly provided with a plurality of circular holes 520 that can accommodate the actuating block, so that after the fixing ring 500 is fixedly installed, the end of the insertion rod 410 can be simultaneously limited and fixed.

[0041] In this utility model, the guide sleeve is provided with slots for installing sealing structural components such as dustproof ring 300, annular block 310, rubber ring 100, and support ring 200 using existing technology. The specific grooving principle will not be elaborated.

[0042] It will be apparent to those skilled in the art that this invention is not limited to the details of the exemplary embodiments described above, and that it can be implemented in other specific forms without departing from the spirit or essential characteristics of this invention. Therefore, the embodiments should be considered illustrative and non-limiting in all respects, and the scope of this invention is defined by the appended claims rather than the foregoing description. Thus, it is intended that all variations falling within the meaning and scope of equivalents of the claims be included within this invention. No reference numerals in the claims should be construed as limiting the scope of the claims.

[0043] Furthermore, it should be understood that although this specification describes embodiments, not every embodiment contains only one independent technical solution. This narrative style is merely for clarity. Those skilled in the art should consider the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

Claims

1. A static sealing structure for a hydraulic cylinder guide sleeve, characterized in that, include: A rubber ring (100) is snapped into the inside of the guide sleeve to prevent hydraulic oil leakage. A notch (110) is provided on one side of the rubber ring (100). A support ring (200) is arranged to the right of the rubber ring (100). The support ring (200) is snapped into the guide sleeve. The support ring (200) can support and guide the piston rod to slide linearly. The dustproof ring (300) is movably attached to the open position of the guide sleeve, which can prevent external dust from entering the guide sleeve and contaminating the cylinder. The outer side of the dustproof ring (300) is slidably attached to an annular block (310). The detection component (400) is capable of detecting whether there is oil leakage at the position of the rubber ring (100). The detection component (400) includes a plurality of plug rods (410) that are movably inserted into the dust ring (300). One end of the plug rod (410) is fixed with a sponge column (420). The retaining ring (500) is detachably installed and fixed on the outside of the opening of the guide sleeve, which enables the annular block (310) to tightly compress the dustproof ring (300).

2. The static sealing structure of the hydraulic cylinder guide sleeve according to claim 1, characterized in that, A buffer pad (210) is snapped between the support ring (200) and the guide sleeve.

3. The static sealing structure of the hydraulic cylinder guide sleeve according to claim 1, characterized in that, An oil seepage groove (120) is pre-set on the left side of the guide sleeve near the rubber ring (100), and the sponge column (420) is arranged in the oil seepage groove (120) and in contact with the rubber ring (100).

4. The static sealing structure of the hydraulic cylinder guide sleeve according to claim 1, characterized in that, Multiple connecting ears are evenly fixed on the outer side of the fixing ring (500), and a stud (510) is detachably fixed between the connecting ears and the guide sleeve.

5. The static sealing structure of the hydraulic cylinder guide sleeve according to claim 1, characterized in that, The dustproof ring (300) is made of rubber, and multiple movable grooves (311) are provided through the dustproof ring (300). The insertion rod (410) is inserted into the movable groove (311).

6. The static sealing structure of the hydraulic cylinder guide sleeve according to claim 5, characterized in that, One end of the insertion rod (410) is fixed with a toggle block, and the fixing ring (500) is arranged on the outside of the dustproof ring (300) and the annular block (310).

7. The static sealing structure of the hydraulic cylinder guide sleeve according to claim 6, characterized in that, The inner side of the fixing ring (500) is evenly provided with a plurality of circular holes (520) that can accommodate the actuating block. The outer ring side of the dustproof ring (300) and the inner ring side of the annular block (310) are both frustum-shaped inclined surfaces.

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