A wear-resistant hydraulic cylinder barrel

Abstract

This utility model discloses a wear-resistant hydraulic cylinder barrel, relating to the field of hydraulic cylinder barrel technology. It includes an outer barrel, inside which an inner barrel is fixedly installed. An end cap is inserted into the other end of the outer barrel, and a cylinder rod is mounted on the end cap. A locking block is mounted on the end cap via a sliding plate. A groove for engaging with the locking block is formed on the side wall of the outer barrel. A slider and a limiting rod are mounted inside the side wall of the outer barrel via a telescopic rod. A limiting groove for engaging with the limiting rod is formed on the locking block. This utility model significantly enhances the wear resistance of the outer barrel by spraying a ceramic coating on its outer side. Simultaneously, the buffer mechanism reduces direct impact of the cylinder rod on the inner barrel, preventing damage to the cylinder barrel and ensuring its efficiency. Furthermore, the locking block, locking groove, limiting rod, and limiting groove form a multiple locking mechanism, ensuring the connection quality between the end cap and the cylinder barrel, thereby guaranteeing the efficiency of the hydraulic cylinder.

Description

Technical Field

[0001] This utility model relates to the field of hydraulic cylinder barrel technology, specifically a wear-resistant hydraulic cylinder barrel. Background Technology

[0002] Hydraulic cylinders, as key actuators in hydraulic systems, are widely used in numerous fields such as engineering machinery, aerospace, metallurgy and mining, and agricultural machinery. Their function is to convert hydraulic energy into mechanical energy, enabling linear reciprocating motion or oscillating motion, thereby driving various mechanical equipment to complete corresponding actions. In many working scenarios, the performance of the hydraulic cylinder barrel directly affects the working efficiency, reliability, and service life of the entire hydraulic system.

[0003] Traditional hydraulic cylinder barrels face numerous problems during long-term use. On one hand, due to the complex and diverse working environment, hydraulic cylinder barrels are frequently subjected to friction and collisions from external objects, as well as erosion from internal hydraulic oil, leading to wear on the cylinder surface. This wear not only reduces the sealing performance of the hydraulic cylinder, causing hydraulic oil leakage and affecting the normal operating pressure and flow of the hydraulic system, but also increases the clearance between the cylinder barrel and mating components such as the piston, causing instability phenomena such as crawling and vibration, thereby reducing the working accuracy and efficiency of the mechanical equipment. On the other hand, the connection structure between the hydraulic cylinder barrel and the end cap is also a crucial factor affecting its reliability. In traditional hydraulic cylinder designs, the connection between the end cap and the cylinder barrel often suffers from insufficient strength and inconvenient disassembly. When the hydraulic cylinder requires maintenance, repair, or component replacement, the complex connection between the end cap and the cylinder barrel makes disassembly time-consuming and labor-intensive, and can easily damage both the cylinder barrel and the end cap, increasing maintenance costs and downtime. Therefore, we propose a wear-resistant hydraulic cylinder barrel. Utility Model Content

[0004] The purpose of this invention is to provide a wear-resistant hydraulic cylinder barrel 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 wear-resistant hydraulic cylinder barrel includes an outer cylinder, an inner cylinder fixedly installed inside the outer cylinder, an end cap inserted into the other end of the outer cylinder, a through hole through the end cap, a cylinder rod slidably installed in the through hole, a plurality of cavities evenly formed inside the end cap, a sliding plate slidably installed in the cavity, a locking block provided on the outer side wall of the sliding plate, a locking groove for cooperating with the locking block provided on the side wall of the outer cylinder, a plurality of mounting cavities evenly formed inside the side wall of the outer cylinder, a telescopic rod fixedly installed inside the mounting cavity, a slider fixedly installed at the end of the telescopic arm of the telescopic rod, a limit rod fixedly installed on the slider, and a limit groove for cooperating with the limit rod provided on the locking block.

[0007] As a further embodiment of this utility model: the outer cylinder is coated with a ceramic coating, and the outer cylinder and the inner cylinder constitute the main body of the hydraulic cylinder, and a hydraulic component is provided inside the main body of the hydraulic cylinder.

[0008] As a further embodiment of this utility model: a damping rod is fixedly connected to one end of the cylinder rod inside the inner cylinder, a fixing plate is fixedly installed at the end of the telescopic arm of the damping rod, and a buffer pad is fixedly installed on the outer wall of one side of the fixing plate.

[0009] As a further improvement of this utility model: a buffer spring is also sleeved on the outside of the damping rod, one end of the buffer spring is fixedly connected to the buffer pad, and the other end of the buffer spring is fixedly connected to the cylinder rod.

[0010] As a further embodiment of this utility model: a support rod is also fixedly installed on the slide plate, the support rod passes through the end cover and is slidably connected to the end cover, and a spring is also sleeved on the outside of the support rod, one end of the spring is fixedly connected to the slide plate, and the other end of the spring is connected to the inner wall of the cavity.

[0011] As a further improvement of this utility model, a handle is fixedly installed at the outer end of the support rod.

[0012] As a further improvement of this utility model: a return spring is sleeved on the outer side of the telescopic rod, one end of the return spring is fixedly connected to the limiting rod, and the other end of the return spring is fixedly connected to the inner wall of the mounting cavity.

[0013] Compared with the prior art, the beneficial effects of this utility model are as follows:

[0014] 1. By spraying a ceramic coating on the outside of the outer cylinder, the wear resistance of the outer cylinder is significantly enhanced. In complex and harsh working environments, the cylinder barrel of the hydraulic cylinder is easily affected by external friction, erosion and other factors and wears. The application of ceramic coating can effectively reduce the wear of the outer cylinder surface and reduce the risk of hydraulic oil leakage caused by wear. At the same time, under the action of the buffer mechanism, it can reduce the direct impact of the cylinder rod on the inner cylinder, which can lead to cylinder barrel damage and ensure the efficiency of cylinder barrel use.

[0015] 2. By utilizing the engagement of the locking block on the internal sliding plate of the end cap with the locking groove on the outer cylinder side wall, and the double locking mechanism of the limiting rod at the end of the telescopic rod in the mounting cavity of the outer cylinder side wall and the upper limit groove of the locking block, the firmness and stability of the connection between the end cap and the cylinder are ensured. Furthermore, by operating the handle at the outer end of the support rod, the locking block and the locking groove, as well as the limiting rod and the limiting groove, can be easily separated, facilitating the disassembly and installation of the end cap. This improves the assembly and disassembly efficiency of the hydraulic cylinder, reduces maintenance costs, ensures the stable operation of the hydraulic system, and reduces safety hazards caused by connection problems. Attached Figure Description

[0016] Figure 1 This is a structural schematic diagram of an embodiment of the present utility model.

[0017] Figure 2 This is a schematic diagram of the internal structure of the cylinder in an embodiment of this utility model.

[0018] Figure 3 This is a schematic diagram of the internal structure of the end cap in an embodiment of this utility model.

[0019] Figure 4 This is a schematic diagram of the structure at point A in an embodiment of this utility model.

[0020] Figure label annotations: 1. Outer cylinder; 2. Inner cylinder; 3. End cap; 4. Cylinder rod; 5. Damping rod; 6. Fixing plate; 7. Buffer spring; 8. Buffer pad; 9. Slide plate; 10. Locking block; 11. Support rod; 12. Handle; 13. Slider; 14. Limiting rod; 15. Telescopic rod; 16. Return spring. Detailed Implementation

[0021] The following embodiments will be described in detail with reference to the accompanying drawings. In the drawings and description, similar or identical parts are referred to by the same reference numerals. Furthermore, in practical applications, the shape, thickness, or height of each component may be enlarged or reduced. The embodiments listed in this utility model are merely illustrative and not intended to limit the scope of the utility model. Any obvious modifications or alterations made to this utility model do not depart from its spirit and scope.

[0022] Example

[0023] Please see Figures 1-4 In this embodiment of the present invention, a wear-resistant hydraulic cylinder barrel includes an outer cylinder 1, and an inner cylinder 2 is fixedly installed inside the outer cylinder 1. The outer cylinder 1 is coated with a ceramic coating, which protects the outer cylinder 1 and improves the wear resistance of the hydraulic cylinder barrel. The outer cylinder 1 and the inner cylinder 2 constitute the main body of the hydraulic cylinder barrel. A hydraulic component is provided inside the main body of the hydraulic cylinder barrel. This application does not involve improvements to the hydraulic component, so it is not described in detail. Moreover, the working principle of the hydraulic component is well known to those skilled in the art.

[0024] An end cap 3 is also inserted into the other end of the outer cylinder 1. A through hole is provided through the end cap 3, and a cylinder rod 4 is slidably arranged in the through hole. Under the action of the cylinder rod 4, in conjunction with the hydraulic components, the cylinder rod 4 can perform normal operation.

[0025] A damping rod 5 is fixedly connected to one end of the cylinder rod 4 inside the inner cylinder 2. A fixing plate 6 is fixedly installed at the end of the telescopic arm of the damping rod 5. A buffer pad 8 is fixedly installed on the outer wall of one side of the fixing plate 6. Under the action of the buffer pad 8, the cylinder rod 4 can directly impact the inside of the inner cylinder 2, which may cause damage to the inner cylinder 2, thereby ensuring the efficiency of the cylinder rod 4. A buffer spring 7 is also sleeved on the outside of the damping rod 5. One end of the buffer spring 7 is fixedly connected to the buffer pad 8, and the other end of the buffer spring 7 is fixedly connected to the cylinder rod 4. The buffer spring 7 and the damping rod 5 constitute a buffer mechanism, thereby better buffering the cylinder rod 4.

[0026] The end cap 3 has several cavities evenly distributed inside, and a sliding plate 9 is slidably disposed in the cavity. A locking block 10 is disposed on the outer side wall of the sliding plate 9, and a locking groove is disposed on the side wall of the outer cylinder 1 to cooperate with the locking block 10. Under the action of the locking block 10 and the locking groove, the connection quality between the end cap 3 and the main body of the hydraulic cylinder is ensured, thereby ensuring the efficiency of the hydraulic cylinder. A support rod 11 is also fixedly installed on the sliding plate 9. The support rod 11 passes through the end cap 3 and is slidably connected to the end cap 3. A spring is also sleeved on the outside of the support rod 11. One end of the spring is fixedly connected to the sliding plate 9, and the other end of the spring is connected to the inner wall of the cavity. Under the action of the spring, the connection quality between the locking block 10 and the locking groove is ensured, thereby ensuring the connection quality between the end cap 3 and the main body of the hydraulic cylinder. A handle 12 is fixedly installed at the outer end of the support rod 11. The locking block 10 can be removed from the locking groove by using the handle 12.

[0027] The inner side wall of the outer cylinder 1 is also evenly provided with several installation cavities. A telescopic rod 15 is fixedly installed inside the installation cavity. A slider 13 is fixedly installed at the end of the telescopic arm of the telescopic rod 15. A limit rod 14 is fixedly installed on the slider 13. A limit groove is provided on the locking block 10 to cooperate with the limit rod 14. At this time, under the action of the limit rod 14 and the limit groove, the connection quality between the locking block 10 and the locking groove is guaranteed. A return spring 16 is sleeved on the outside of the telescopic rod 15. One end of the return spring 16 is fixedly connected to the limit rod 14, and the other end of the return spring 16 is fixedly connected to the inner wall of the installation cavity. At this time, under the action of the return spring 16, the connection quality between the limit rod 14 and the limit groove is guaranteed.

[0028] In actual use, in its initial state, the end cap 3 is tightly connected to the outer cylinder 1 via a unique snap-fit ​​structure. Specifically, a sliding plate 9 is slidably disposed within several evenly spaced cavities inside the end cap 3. A locking block 10 on the outer side wall of the sliding plate 9 engages with a locking groove on the side wall of the outer cylinder 1. Simultaneously, a support rod 11 fixed to the sliding plate 9 passes through the end cap 3 and is slidably connected to it. One end of a spring sleeved on the outside of the support rod 11 is fixed to the sliding plate 9, and the other end is connected to the inner wall of the cavity. Under the elastic force of the spring, the locking block 10 always remains tightly connected to the locking groove, thereby ensuring the connection quality between the end cap 3 and the hydraulic cylinder body (composed of the outer cylinder 1 and the inner cylinder 2), providing a stable foundation for the normal operation of the hydraulic cylinder. In addition, a telescopic rod 15 is fixedly installed in several mounting cavities evenly opened inside the side wall of the outer cylinder 1. A limit rod 14 is installed on the slider 13 fixedly connected to the end of the telescopic arm. A limit groove is opened on the locking block 10 to cooperate with the limit rod 14. A return spring 16 is sleeved on the outside of the telescopic rod 15, with one end fixed to the limit rod 14 and the other end fixed to the inner wall of the mounting cavity. This further ensures the connection quality between the locking block 10 and the locking groove, making the connection between the end cover 3 and the cylinder body more reliable.

[0029] When the hydraulic system is started, the hydraulic components (not described in detail in this application, but whose working principle is well known to those skilled in the art) begin to work, pushing the cylinder rod 4 to slide in the through hole of the end cover 3. The damping rod 5, which is fixedly connected to one end of the cylinder rod 4 inside the inner cylinder 2, moves together with the cylinder rod 4. The fixed plate 6 and the buffer pad 8 on the outer wall of the damping rod 5 are fixedly installed at the end of the telescopic arm. When the cylinder rod 4 moves close to the inner end of the inner cylinder 2, the buffer pad 8 can first contact the inside of the inner cylinder 2, reducing the possibility of the cylinder rod 4 directly hitting the inner cylinder 2, thereby avoiding damage to the inner cylinder 2 due to impact and ensuring the efficiency of the cylinder rod 4.

[0030] When the end cap 3 needs to be disassembled for maintenance or repair, the operator only needs to pull the handle 12 fixedly installed at the outer end of the support rod 11, causing the support rod 11 to slide the slide plate 9 in the cavity, thereby moving the locking block 10 out of the slot. At the same time, under the elastic force of the return spring 16, the limiting rod 14 will also disengage from the limiting groove of the locking block 10. At this time, the connection between the end cap 3 and the outer cylinder 1 is released, and it can be easily removed. When installing the end cap 3, the above process is reversed. Under the elastic force of the spring and the return spring 16, the locking block 10 re-engages into the slot, and the limiting rod 14 re-engages into the limiting groove, completing the installation of the end cap 3. In addition, the ceramic coating sprayed on the outer side of the outer cylinder 1 can effectively enhance the wear resistance of the outer cylinder 1, reduce the wear of the outer cylinder 1 by external factors during the operation of the hydraulic cylinder, and extend the service life of the hydraulic cylinder barrel.

[0031] 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.

[0032] 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 wear-resistant hydraulic cylinder barrel, comprising an outer cylinder (1), characterized in that, An inner cylinder (2) is fixedly installed inside the outer cylinder (1). An end cap (3) is inserted into the other end of the outer cylinder (1). A through hole is provided through the end cap (3). A cylinder rod (4) is slidably installed in the through hole. Several cavities are evenly opened inside the end cap (3). A sliding plate (9) is slidably installed in the cavity. A locking block (10) is provided on the outer side wall of the sliding plate (9). A slot for cooperating with the locking block (10) is opened on the side wall of the outer cylinder (1). Several installation cavities are evenly opened inside the side wall of the outer cylinder (1). A telescopic rod (15) is fixedly installed inside the installation cavity. A slider (13) is fixedly installed at the end of the telescopic arm of the telescopic rod (15). A limit rod (14) is fixedly installed on the slider (13). A limit groove for cooperating with the limit rod (14) is opened on the locking block (10).

2. The wear-resistant hydraulic cylinder barrel according to claim 1, characterized in that, The outer cylinder (1) is coated with a ceramic coating. The outer cylinder (1) and the inner cylinder (2) constitute the main body of the hydraulic cylinder. The hydraulic cylinder main body is equipped with hydraulic components.

3. The wear-resistant hydraulic cylinder barrel according to claim 1, characterized in that, The cylinder rod (4) is located inside the inner cylinder (2) and a damping rod (5) is fixedly connected to one end. A fixing plate (6) is fixedly installed at the end of the telescopic arm of the damping rod (5). A buffer pad (8) is fixedly installed on the outer wall of one side of the fixing plate (6).

4. The wear-resistant hydraulic cylinder barrel according to claim 3, characterized in that, A buffer spring (7) is also sleeved on the outside of the damping rod (5). One end of the buffer spring (7) is fixedly connected to the buffer pad (8), and the other end of the buffer spring (7) is fixedly connected to the cylinder rod (4).

5. The wear-resistant hydraulic cylinder barrel according to claim 1, characterized in that, A support rod (11) is also fixedly installed on the slide plate (9). The support rod (11) passes through the end cover (3) and is slidably connected to the end cover (3). A spring is also sleeved on the outside of the support rod (11). One end of the spring is fixedly connected to the slide plate (9), and the other end of the spring is connected to the inner wall of the cavity.

6. The wear-resistant hydraulic cylinder barrel according to claim 5, characterized in that, A handle (12) is fixedly installed at the outer end of the support rod (11).

7. The wear-resistant hydraulic cylinder barrel according to claim 1, characterized in that, A return spring (16) is sleeved on the outside of the telescopic rod (15). One end of the return spring (16) is fixedly connected to the limiting rod (14), and the other end of the return spring (16) is fixedly connected to the inner wall of the mounting cavity.

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