Oil cylinder

Abstract

The utility model discloses an oil cylinder which comprises a cylinder body, a cylinder bottom is arranged at the bottom end of the cylinder body, a lower cover is arranged at the top end of the cylinder body, an upper cover is installed at the top end of the lower cover, first copper sleeves are arranged on the inner walls of the upper cover and the lower cover, a piston rod is movably connected into the cylinder body, and the bottom end of the piston rod penetrates through the cylinder bottom and is provided with an installation positioning ring. A second copper sleeve is arranged on the inner wall of the installation positioning ring, a piston body is arranged on the outer wall of the upper end of the piston rod, upper guide rings are arranged on the outer walls of the two ends of the piston body, a plurality of Glyd rings are arranged on the outer wall of the lower end of the piston rod, and a piston O-shaped ring is arranged on the outer wall of the piston body between the upper guide rings. And a first lower guide ring and a second lower guide ring are respectively arranged on the outer wall of the piston rod between the adjacent glyd rings. According to the oil cylinder, the sealing performance of the oil cylinder in use is improved, the energy consumption of the oil cylinder is effectively reduced, the stability of the oil cylinder in movement is guaranteed, and the purpose that the oil cylinder is easy to install and connect is achieved.

Description

Technical Field

[0001] The utility model relates to the technical field of hydraulic transmission, in particular to an oil cylinder. Background Technique

[0002] As a key actuating element in a hydraulic transmission system, the performance of an oil cylinder directly affects the operation efficiency and stability of the entire system. There are still many problems in the design of traditional oil cylinders. Therefore, it is particularly important to develop an efficient oil cylinder.

[0003] An oil cylinder with the reference publication number of CN206754035U includes a cylinder block. A piston rod is arranged inside the cylinder block, and a piston is fixed on the piston rod. The cylinder block includes a cylinder block one and a cylinder block two which are fixedly connected. A bottom cylinder one is fixedly connected between the cylinder block one and the cylinder block two. A first backup cap is fixedly arranged at one end of the cylinder block one, and a second backup cap is fixedly arranged inside the bottom cylinder one. The piston is arranged between the first backup cap and the second backup cap. This oil cylinder reduces the coaxiality error between the piston rod and the cylinder block and reduces the movement resistance of the piston rod. This oil cylinder has the following beneficial effects: it improves the assembly method, improves the yield rate of the hydraulic cylinder assembly on the premise of ensuring the assembly efficiency, and saves the production cost. According to the above, although this oil cylinder can be well applied, it is usually not convenient to seal the contact areas at the upper and lower ends of the oil cylinder, resulting in the phenomenon of hydraulic oil leakage easily occurring after long-term operation of the oil cylinder, and the sealing performance is difficult to reach the established expectation, which often troubles users. Content of the Utility Model

[0004] The purpose of the utility model is to provide an oil cylinder to solve the problem that although the oil cylinder can be well applied, it is usually not convenient to seal the contact areas at the upper and lower ends of the oil cylinder, resulting in the phenomenon of hydraulic oil leakage easily occurring after long-term operation of the oil cylinder, and the sealing performance is difficult to reach the established expectation as mentioned in the above background technique.

[0005] To achieve the above purpose, the utility model provides the following technical solution: an oil cylinder includes a cylinder block. A bottom cylinder is arranged at the bottom end of the cylinder block, and a lower cover is arranged at the top end of the cylinder block. An upper cover is installed at the top end of the lower cover. First copper sleeves are arranged on the inner walls of the upper cover and the lower cover. A piston rod is movably connected inside the cylinder block. The bottom end of the piston rod penetrates through the bottom cylinder and is provided with an installation positioning ring. A second copper sleeve is arranged on the inner wall of the installation positioning ring. A piston body is arranged on the outer wall of the upper end of the piston rod. Upper guide rings are arranged on the outer walls at both ends of the piston body. A plurality of Gleit rings are arranged on the outer wall of the lower end of the piston rod.

[0006] Preferably, a piston O-ring is arranged on the outer wall of the piston body between the upper guide rings, and a first lower guide ring and a second lower guide ring are respectively arranged on the outer wall of the piston rod between adjacent Gleason rings. Through the arrangement of the first lower guide ring and the second lower guide ring, the movement amplitude of the piston rod can be limited.

[0007] Preferably, inner hexagon screws are installed on both sides of the top end of the upper cover. The bottom ends of the inner hexagon screws penetrate the upper cover and are threadedly connected to the top of the lower cover. Through the arrangement of the inner hexagon screws, the upper cover can be locked and placed on the top end of the lower cover.

[0008] Preferably, an oil guiding screw is arranged on the outer wall of one side of the lower cover, and combined gaskets are sleeved on the outer walls on both sides of the oil guiding screw. Through the arrangement of the oil guiding screw, the first joint can be placed and processed.

[0009] Preferably, a first joint is arranged at the bottom end of the oil guiding screw, and a first fixing nut is installed at the bottom end of the first joint. Through the arrangement of the first joint and the first fixing nut, the upper end of the oil pipe can be installed and connected.

[0010] Preferably, an oil pipe is arranged at the end of the first fixing nut away from the first joint, and a second fixing nut is arranged at the bottom end of the oil pipe. Through the arrangement of the second fixing nut, the lower end of the oil pipe can be installed and connected in cooperation with the second joint.

[0011] Preferably, a second joint is installed at the bottom end of the second fixing nut, and the bottom end of the second joint is connected to the top end of the cylinder bottom. Through the arrangement of the second joint, the lower end of the oil pipe can be installed and connected in cooperation with the second fixing nut.

[0012] Compared with the prior art, the beneficial effects of the present utility model are as follows: This oil cylinder not only improves the sealing performance during the use of the oil cylinder, effectively reduces the energy consumption of the oil cylinder, ensures the smoothness during the movement of the oil cylinder, but also achieves the purpose of being easy to install and connect the oil cylinder;

[0013] (1) By using multi-layer composite sealing materials to make the piston O-ring and the Gleason ring, and arranging the piston O-ring and the Gleason ring at both ends of the piston rod, a dynamic adaptive sealing structure is formed by combining elastic compensation design. This sealing structure can effectively reduce the leakage of hydraulic oil under high pressure, thereby improving the sealing performance during the use of the oil cylinder and effectively reducing the energy consumption of the oil cylinder;

[0014] (2) By arranging an upper guide ring on the outer side of the upper end of the piston rod and a first lower guide ring and a second lower guide ring on the outer side of the lower end of the piston rod, the movement amplitude of the piston rod can be limited, and further, the phenomenon of the piston rod deviating during movement can be effectively reduced, thereby ensuring the smoothness during the movement of the oil cylinder;

[0015] (3) The upper cover is bolted to the top end of the lower cover by an Allen screw. A first copper sleeve is arranged inside the upper cover and the lower cover, and a second copper sleeve is arranged inside the installation positioning ring, so that an external connecting piece can be inserted and arranged inside the first copper sleeve and the second copper sleeve, thereby achieving the purpose of facilitating the installation and connection of the oil cylinder. Description of the Drawings

[0016] Figure 1 It is a front three-dimensional structural schematic diagram of the present utility model;

[0017] Figure 2 It is a sectional structural schematic diagram of the present utility model;

[0018] Figure 3 It is an exploded structural schematic diagram of the present utility model;

[0019] Figure 4 It is a bottom view structural schematic diagram of the present utility model.

[0020] In the figure: 1, cylinder block; 2, oil pipe; 3, first fixing nut; 4, first joint; 5, oil guiding screw; 6, combined gasket; 7, upper cover; 8, lower cover; 9, Allen screw; 10, first copper sleeve; 11, cylinder bottom; 12, installation positioning ring; 13, second copper sleeve; 14, second fixing nut; 15, second joint; 16, first lower guiding ring; 17, Gleason ring; 18, second lower guiding ring; 19, piston body; 20, upper guiding ring; 21, piston O-ring; 22, piston rod. Detailed Embodiment

[0021] Next, the technical solutions in the embodiments of the present utility model will be clearly and completely described in conjunction with the drawings in the embodiments of the present utility model. Based on the embodiments in the present utility model, all other embodiments obtained by those of ordinary skill in the art without making creative efforts shall fall within the protection scope of the present utility model.

[0022] Please refer to Figures 1-4 , an embodiment provided by the present utility model: An oil cylinder includes a cylinder block 1, a cylinder bottom 11 is arranged at the bottom end of the cylinder block 1, a lower cover 8 is arranged at the top end of the cylinder block 1, an oil guiding screw 5 is arranged on the outer wall of one side of the lower cover 8, and combined gaskets 6 are sleeved on the outer walls on both sides of the oil guiding screw 5;

[0023] During use, through the arrangement of the oil guiding screw 5, the first joint 4 can be arranged and processed;

[0024] The bottom end of the oil guiding screw 5 is provided with a first joint 4, and a first fixing nut 3 is installed at the bottom end of the first joint 4;

[0025] In use, through the setting of the first joint 4 and the first fixing nut 3, the upper end of the oil pipe 2 can be installed and connected;

[0026] One end of the first fixing nut 3 away from the first joint 4 is provided with an oil pipe 2, and the bottom end of the oil pipe 2 is provided with a second fixing nut 14;

[0027] In use, through the setting of the second fixing nut 14, the lower end of the oil pipe 2 can be installed and connected in cooperation with the second joint 15;

[0028] The bottom end of the second fixing nut 14 is installed with a second joint 15, and the bottom end of the second joint 15 is connected to the top end of the cylinder bottom 11;

[0029] In use, through the setting of the second joint 15, the lower end of the oil pipe 2 can be installed and connected in cooperation with the second fixing nut 14;

[0030] The top end of the lower cover 8 is installed with an upper cover 7. On both sides of the top end of the upper cover 7, socket head cap screws 9 are installed. The bottom ends of the socket head cap screws 9 penetrate through the upper cover 7 and are threadedly connected to the top of the lower cover 8;

[0031] In use, through the setting of the socket head cap screws 9, the upper cover 7 can be locked and placed on the top end of the lower cover 8;

[0032] On the inner walls of the upper cover 7 and the lower cover 8, first copper sleeves 10 are provided. A piston rod 22 is movably connected inside the cylinder block 1. The bottom end of the piston rod 22 penetrates through the cylinder bottom 11 and is provided with an installation positioning ring 12. A second copper sleeve 13 is provided on the inner wall of the installation positioning ring 12. A piston body 19 is provided on the outer wall of the upper end of the piston rod 22. Upper guide rings 20 are provided on the outer walls at both ends of the piston body 19. A piston O-ring 21 is provided on the outer wall of the piston body 19 between the upper guide rings 20. A first lower guide ring 16 and a second lower guide ring 18 are respectively provided on the outer wall of the piston rod 22 between adjacent Gleitrings 17;

[0033] In use, through the setting of the first lower guide ring 16 and the second lower guide ring 18, the movement range of the piston rod 22 can be limited;

[0034] A number of Gleitrings 17 are provided on the outer wall of the lower end of the piston rod 22.

[0035] When the embodiment of the present application is in use, first, the upper cover 7 is bolted to the top of the lower cover 8 through the hexagon socket head screw 9. And a first copper sleeve 10 is arranged inside the upper cover 7 and the lower cover 8, and a second copper sleeve 13 is arranged inside the mounting positioning ring 12, so as to insert and place an external connecting piece inside the first copper sleeve 10 and the second copper sleeve 13, making it easy to install and connect the oil cylinder. After that, an upper guide ring 20 is arranged on the outer side of the upper end of the piston rod 22, and a first lower guide ring 16 and a second lower guide ring 18 are arranged on the outer side of the lower end of the piston rod 22 to limit the movement range of the piston rod 22, thereby effectively reducing the phenomenon of deviation generated during the movement of the piston rod 22 and ensuring the smoothness of the oil cylinder during movement. Finally, the piston O-ring 21 and the Gleitring 17 are made of a multi-layer composite sealing material, and the piston O-ring 21 and the Gleitring 17 are arranged at both ends of the piston rod 22 to form a dynamic adaptive sealing structure in combination with the elastic compensation design. This sealing structure can effectively reduce the leakage of hydraulic oil under high pressure, improve the sealing performance of the oil cylinder, and reduce the energy consumption of the oil cylinder, thus completing the use of the oil cylinder.

[0036] It should be noted that in this text, relational terms such as first and second are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any actual relationship or order between these entities or operations. Moreover, the term "comprising", "including" or any other variant thereof is intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements not only includes those elements, but also includes other elements not expressly listed, or also includes elements inherent to such process, method, article or device.

[0037] Although the present utility model has been described above with reference to the embodiments, various improvements can be made to it and components therein can be replaced with equivalents without departing from the scope of the present utility model. In particular, as long as there is no structural conflict, the various features in the disclosed embodiments of the present utility model can be combined with each other in any way. The reason for not exhaustively describing the situations of these combinations in this specification is only to save space and resources. Therefore, the present utility model is not limited to the specific embodiments disclosed in the text, but includes all technical solutions falling within the scope of the claims.

Claims

1. A cylinder, characterized in that: The invention comprises a cylinder body (1), wherein a cylinder bottom (11) is arranged at the bottom end of the cylinder body (1), a lower cover (8) is arranged at the top end of the cylinder body (1), an upper cover (7) is installed at the top end of the lower cover (8), a first copper sleeve (10) is arranged on the inner wall of each of the upper cover (7) and the lower cover (8), a piston rod (22) is movably connected inside the cylinder body (1), the bottom end of the piston rod (22) passes through the cylinder bottom (11) and is provided with a mounting and positioning ring (12), a second copper sleeve (13) is arranged on the inner wall of the mounting and positioning ring (12), a piston body (19) is arranged on the outer wall of the upper end of the piston rod (22), upper guide rings (20) are arranged on the outer walls of both ends of the piston body (19), and a plurality of grid rings (17) are arranged on the outer wall of the lower end of the piston rod (22).

2. The oil cylinder according to claim 1, characterized in that: A piston O-ring (21) is arranged on the outer wall of the piston body (19) between the upper guide rings (20), and a first lower guide ring (16) and a second lower guide ring (18) are respectively arranged on the outer wall of the piston rod (22) between the adjacent Gley rings (17).

3. The oil cylinder according to claim 1, characterized in that: Both sides of the top of the upper cover (7) are installed with hexagon socket screws (9), and the bottom end of the hexagon socket screws (9) passes through the upper cover (7) and is threadedly connected to the top of the lower cover (8).

4. The oil cylinder according to claim 1, characterized in that: An oil guide screw (5) is arranged on the outer wall of one side of the lower cover (8), and combined gaskets (6) are mounted on the outer walls of both sides of the oil guide screw (5).

5. The oil cylinder according to claim 4, characterized in that: The bottom end of the oil guide screw (5) is provided with a first joint (4), and the bottom end of the first joint (4) is installed with a first fixing nut (3).

6. The oil cylinder according to claim 5, characterized in that: An oil pipe (2) is arranged at one end of the first fixing nut (3) away from the first joint (4), and a second fixing nut (14) is arranged at the bottom end of the oil pipe (2).

7. The oil cylinder according to claim 6, characterized in that: A second joint (15) is installed at the bottom end of the second fixing nut (14), and the bottom end of the second joint (15) is connected to the top end of the cylinder bottom (11).

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