Oil cylinder with floating buffer structure

Abstract

The utility model relates to the technical field of oil cylinder, concretely is an oil cylinder with floating buffer structure, it includes: cylinder body, the inside installation of cylinder body has piston rod, the left end of piston rod is installed with floating buffer mechanism, floating buffer mechanism includes mounting post, the left end of piston rod is fixed with mounting post, the left end surface of mounting post is opened with annular groove, the outside of mounting post is equipped with floating buffer cover, the inner wall left end of floating buffer cover is opened with step groove, the inside of annular groove is equipped with clamping plate. The utility model discloses through setting screw, can connect first card and second card, first card cooperation second card can constitute annular, and the outside of mounting post is equipped, can to floating buffer cover abuts, so that step groove is equipped with the outside of clamping plate, in this way to the installation of floating buffer cover is limited, guarantees the installation convenience of floating buffer cover.

Description

Technical Field

[0001] This utility model relates to the field of hydraulic cylinder technology, specifically to a hydraulic cylinder with a floating buffer structure. Background Technology

[0002] During rapid movement, hydraulic cylinders generate strong impacts, noise, and even mechanical collisions at the end of their stroke, especially under high pressure. This effect is more pronounced and severely impacts the lifespan of the cylinder. Therefore, appropriate braking and buffering must be performed before the end of the movement to ensure the lifespan of the system and the cylinder. Commonly used buffering methods include internal hydraulic cylinder buffering and external hydraulic cylinder buffering. However, external hydraulic cylinder buffering increases the complexity and cost of the entire hydraulic system. Internal hydraulic cylinder buffering devices have a simple structure, small size, and do not require any additional hydraulic components such as flow control valves, making them a more ideal buffering method. Existing internal hydraulic cylinder buffering structures are simple, generally consisting of a cylindrical buffer sleeve added to the piston rod.

[0003] Currently, fixing the buffer sleeve onto the piston rod requires the use of a U-shaped retaining ring. Since the opening size of the retaining ring is smaller than the diameter of the piston rod, a copper hammer is needed during installation to strike the retaining ring onto the piston rod. This is time-consuming and laborious, and during the striking process, misalignment can occur, easily damaging the surface of the piston rod, which in turn affects the sealing performance of the cylinder and causes inconvenience.

[0004] Therefore, in order to solve the above problems, a hydraulic cylinder with a floating buffer structure is proposed. Utility Model Content

[0005] The purpose of this utility model is to provide a hydraulic cylinder with a floating buffer structure to solve the problems mentioned in the background art, which involve using a copper hammer to strike the retaining ring to fit it onto the piston rod. This method is time-consuming and laborious, and during the striking process, deviation can occur, easily damaging the surface of the piston rod, which in turn affects the sealing performance of the cylinder and causes inconvenience.

[0006] To achieve the above objectives, the present invention provides the following technical solution: a hydraulic cylinder with a floating buffer structure, comprising: a cylinder body, wherein a piston rod is installed on the inner side of the cylinder body; A floating buffer mechanism is installed at the left end of the piston rod. The floating buffer mechanism includes a mounting post, which is fixedly welded to the left end of the piston rod. An annular groove is formed on the left end surface of the mounting post. A floating buffer sleeve is fitted on the outer side of the mounting post. A stepped groove is formed on the left end of the inner wall of the floating buffer sleeve. A card is clamped on the inner side of the annular groove. A first card and a second card are fitted on the outer side of the right end of the mounting post. A screw is inserted into the bottom surface of the first card.

[0007] Preferably, the length of the mounting post is greater than the length of the floating buffer sleeve, and the inner diameter of the floating buffer sleeve is the same as the diameter of the mounting post.

[0008] Preferably, the card plate is provided in two sets, the two sets of card plates are spliced ​​together to form a ring, and the two sets of card plates are fitted inside the annular groove.

[0009] Preferably, the inner diameter of the stepped groove is the same as the outer diameter of the card plate, and the stepped groove is positioned on the outside of the card plate.

[0010] Preferably, the first card and the second card are spliced ​​together in a ring shape, and the screw passes through the first card and is threadedly connected to the first card.

[0011] Compared with the prior art, the beneficial effects of this utility model are: by setting screws, the first card and the second card can be connected. The first card and the second card can form a ring and be sleeved on the outside of the mounting post, which can abut against the floating buffer sleeve, so that the stepped groove is sleeved on the outside of the card plate, thereby limiting the installation of the floating buffer sleeve and ensuring the ease of installation of the floating buffer sleeve.

[0012] This invention features a floating buffer mechanism. First, the locking plate is fitted onto the outside of the mounting post. Then, the floating buffer sleeve is pulled to the right, causing the annular groove to protrude from the inside of the sleeve. Next, two sets of locking plates are fitted onto the inside of the annular groove and joined together. Then, the floating buffer sleeve is pulled to the left, causing the stepped groove to fit onto the outside of the two sets of locking plates. The locking plates, in conjunction with the annular groove, limit the installation of the floating buffer sleeve on the mounting post from the left side. At this point, the right end of the mounting post is exposed, and the first and second locking plates are respectively fitted onto the right sides of the mounting post. The first and second cards are then joined together, and the screws are tightened to secure them together. At this point, the first and second cards form a ring, which is fitted onto the outer right end of the mounting post. The first card, in conjunction with the second card, can abut against the floating buffer sleeve on the right side, allowing the stepped groove to be stably fitted onto the outer side of the card plate. This improves the installation stability of the floating buffer sleeve on the mounting post, ensures the ease of installation and removal of the floating buffer sleeve, eliminates the need for a hammer striking device, avoids damage to the piston rod surface, and enhances the practicality of the device. Attached Figure Description

[0013] Figure 1 This is a front view schematic diagram of the structure of this utility model; Figure 2 This is a front view schematic diagram of the floating buffer mechanism of this utility model; Figure 3 This is an exploded view of the structure of the floating buffer mechanism of this utility model; Figure 4This is a front view cross-sectional schematic diagram of the floating buffer mechanism of this utility model.

[0014] In the diagram: 1. Cylinder block; 11. Piston rod; 2. Floating buffer mechanism; 21. Mounting post; 22. Annular groove; 23. Floating buffer sleeve; 24. Stepped groove; 25. Clamping plate; 26. First clip; 27. Second clip; 28. Screw. Detailed Implementation

[0015] 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.

[0016] Please see Figures 1-4 The present invention provides an embodiment of a hydraulic cylinder with a floating buffer structure: The cylinder 1 and piston rod 11 used in this application are products that can be purchased directly from the market. Their principles and connection methods are existing technologies well known to those skilled in the art, so they will not be described in detail here.

[0017] A hydraulic cylinder with a floating buffer structure includes: a cylinder body 1, and a piston rod 11 installed on the inner side of the cylinder body 1; A floating buffer mechanism 2 is installed at the left end of the piston rod 11. The floating buffer mechanism 2 includes a mounting post 21, which is fixedly welded to the left end of the piston rod 11. An annular groove 22 is formed on the surface of the left end of the mounting post 21. A floating buffer sleeve 23 is fitted on the outer side of the mounting post 21. A stepped groove 24 is formed on the left end of the inner wall of the floating buffer sleeve 23. A retaining plate 25 is clamped on the inner side of the annular groove 22. A first card 26 and a second card 27 are fitted on the outer side of the right end of the mounting post 21. A screw 28 is inserted into the bottom surface of the first card 26. The first card 26 and the second card 27 can be connected by the screw 28. The first card 26 and the second card 27 can form an annular shape and fit on the outer side of the mounting post 21, which can abut against the floating buffer sleeve 23, so that the stepped groove 24 fits on the outer side of the retaining plate 25. This limits the installation of the floating buffer sleeve 23 and ensures the ease of installation of the floating buffer sleeve 23.

[0018] Furthermore, the length of the mounting post 21 is greater than the length of the floating buffer sleeve 23, the inner diameter of the floating buffer sleeve 23 is the same as the diameter of the mounting post 21, the floating buffer sleeve 23 can be stably fitted on the outside of the mounting post 21, and the floating buffer sleeve 23 can move on the outside of the mounting post 21.

[0019] Furthermore, the card plate 25 is provided in two sets, and the two sets of card plates 25 are spliced ​​together to form a ring. The two sets of card plates 25 are fitted inside the annular groove 22. The card plate 25 cooperates with the annular groove 22 to provide a limit for the installation of the floating buffer sleeve 23 on the mounting column 21.

[0020] Furthermore, the inner diameter of the stepped groove 24 is the same as the outer diameter of the clamping plate 25. The stepped groove 24 is clamped on the outside of the clamping plate 25. The clamping plate 25 cooperates with the stepped groove 24 to provide a limit for the installation of the floating buffer sleeve 23 on the mounting post 21.

[0021] Furthermore, the first card 26 and the second card 27 are spliced ​​together in a ring shape, and the screw 28 passes through the first card 26 and is threadedly connected to the first card 26. The first card 26 cooperates with the second card 27 to abut against the floating buffer sleeve 23, so that the stepped groove 24 is stuck on the outside of the card plate 25 to stably limit the floating buffer sleeve 23.

[0022] Working principle: During installation, first, the clamping plate 25 is fitted onto the outside of the mounting post 21. Then, the floating buffer sleeve 23 is pulled to the right, causing the annular groove 22 to protrude from the inside of the floating buffer sleeve 23. Next, the two sets of clamping plates 25 are clamped onto the inside of the annular groove 22 and the two sets of clamping plates 25 are joined together. Then, the floating buffer sleeve 23 is pulled to the left, and the stepped groove 24 is fitted onto the outside of the two sets of clamping plates 25. The clamping plates 25, in conjunction with the annular groove 22, can limit the installation of the floating buffer sleeve 23 on the mounting post 21 from the left side. At this time, the right end of the mounting post 21 is exposed. The first clip 26 and the second clip 27 are respectively fitted onto the right sides of the mounting post 21, and then... The first card 26 and the second card 27 are assembled, and then the screw 28 is tightened to fix the first card 26 and the second card 27 together. At this time, the first card 26 and the second card 27 form a ring and are fitted on the outside of the right end of the mounting post 21. The first card 26 and the second card 27 can abut against the floating buffer sleeve 23 on the right side, so that the stepped groove 24 is stably fitted on the outside of the card plate 25, thereby improving the installation stability of the floating buffer sleeve 23 on the mounting post 21, ensuring the ease of installation and removal of the floating buffer sleeve 23, eliminating the need for a copper hammer striking device, avoiding damage to the surface of the piston rod 11, and improving the practicality of the device.

[0023] 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 equivalent 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 considered 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 a floating buffer structure, comprising: Cylinder (1), on the inner side of which a piston rod (11) is installed. Its features are: A floating buffer mechanism (2) is installed at the left end of the piston rod (11). The floating buffer mechanism (2) includes a mounting post (21). The mounting post (21) is fixedly welded to the left end of the piston rod (11). An annular groove (22) is opened on the left end surface of the mounting post (21). A floating buffer sleeve (23) is fitted on the outer side of the mounting post (21). A stepped groove (24) is opened on the left end of the inner wall of the floating buffer sleeve (23). A card plate (25) is clamped on the inner side of the annular groove (22). A first card (26) and a second card (27) are fitted on the outer side of the right end of the mounting post (21). A screw (28) is inserted into the bottom surface of the first card (26).

2. The hydraulic cylinder with a floating buffer structure according to claim 1, characterized in that: The length of the mounting post (21) is greater than the length of the floating buffer sleeve (23), and the inner diameter of the floating buffer sleeve (23) is the same as the diameter of the mounting post (21).

3. A hydraulic cylinder with a floating buffer structure according to claim 1, characterized in that: The card plate (25) is provided in two sets, and the two sets of card plates (25) are spliced ​​together to form a ring, and the two sets of card plates (25) are fitted inside the annular groove (22).

4. A hydraulic cylinder with a floating buffer structure according to claim 1, characterized in that: The inner diameter of the stepped groove (24) is the same as the outer diameter of the clamping plate (25), and the stepped groove (24) is clamped on the outside of the clamping plate (25).

5. A hydraulic cylinder with a floating buffer structure according to claim 1, characterized in that: The first card (26) and the second card (27) are spliced ​​together in a ring shape, and the screw (28) passes through the first card (26) and is threadedly connected to the first card (26).

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