Novel hydraulic oil cylinder

Abstract

The novel hydraulic oil cylinder comprises a cylinder barrel, a piston rod, a piston, an upper end cover and a lower end cover, the upper end cover and the lower end cover are detachably connected to the upper end and the lower end of the cylinder barrel, the piston is movably arranged in the cylinder barrel, one end of the piston rod is fixedly connected with the piston, and the other end of the piston rod upwards penetrates out of the upper end cover. A brush sleeve is detachably arranged on the upper end cover, a brush making contact with the piston rod is arranged in the brush sleeve, the brush making contact with the piston rod is arranged in the brush sleeve and used for brushing off particulate matter on the piston rod, the particulate matter is prevented from entering the cylinder barrel along with the piston rod, and the service life of the cylinder barrel is prolonged.

Description

Technical Field

[0001] This utility model relates to the field of hydraulic cylinder technology, and in particular to a novel hydraulic cylinder. Background Technology

[0002] A hydraulic cylinder is a device that converts hydraulic energy into mechanical energy, primarily used in various engineering, industrial, and agricultural machinery. It generates thrust through fluid pressure, pushing a piston to move linearly, thus achieving motion control of the equipment. Hydraulic cylinders are widely used due to their simple structure, reliable operation, and ease of control.

[0003] During use, existing hydraulic cylinders may experience particulate matter adhering to the piston rod due to environmental factors. This particulate matter may then enter the cylinder barrel along with the piston rod, contaminating the hydraulic fluid and affecting the service life of the hydraulic cylinder. This application addresses this issue by making improvements. Utility Model Content

[0004] This utility model proposes a novel hydraulic cylinder that solves the aforementioned problems existing in the use of existing technologies.

[0005] The technical solution of this utility model is implemented as follows: A novel hydraulic cylinder includes a cylinder barrel, a piston rod, a piston, an upper end cover, and a lower end cover. The upper end cover and the lower end cover are detachably connected to the upper and lower ends of the cylinder barrel. The piston is movably disposed inside the cylinder barrel. One end of the piston rod is fixedly connected to the piston, and the other end of the piston rod extends upward through the upper end cover. A brush sleeve is detachably disposed on the upper end cover, and a brush that contacts the piston rod is disposed inside the brush sleeve.

[0006] Preferably, the upper end cover is provided with a sealing element that is in contact with the piston rod, the upper end cover is provided with a limiting step, the upper end of the sealing element is provided with a limiting ring that abuts against the limiting step, the upper end cover is provided with a dustproof cover, and the lower end of the dustproof cover is pressed against the limiting ring.

[0007] Preferably, the dustproof cap and the upper cover are connected by threads, and the upper end of the dustproof cap is provided with a hexagonal connector located above the upper cover, and the brush is located above the hexagonal connector.

[0008] Preferably, a plurality of connecting rods are provided between the upper end cover and the lower end cover. Both the upper end cover and the lower end cover have cylinder insertion ports, and the cylinder is inserted into the cylinder insertion ports. Both the upper end cover and the lower end cover have connection ports. The two ends of the connecting rods pass through the connection ports of the upper end cover and the lower end cover respectively and are threaded with nuts.

[0009] Preferably, the brush sleeve has an integrally formed connecting plate, the connecting plate is attached to the upper end cover, the upper end of the connecting rod passes through the connecting plate, and the nut at the upper end of the connecting rod is pressed against the connecting plate.

[0010] Preferably, both the upper and lower end caps have oil passages that lead into the cylinder, and both the upper and lower end caps have filter connectors threaded onto the oil passages.

[0011] Preferably, the filter connector is equipped with an oil filter screen and activated carbon.

[0012] In summary, the beneficial effects of this utility model are as follows:

[0013] 1. This utility model has a brush inside the brush sleeve that contacts the piston rod, used to brush off particles on the piston rod, preventing particles from entering the cylinder along with the piston rod, and improving the service life of this utility model.

[0014] 2. The seal is used to prevent oil from leaking out of the cylinder. The dust cover is used to fix the seal. In addition, after the brush sleeve is removed, the dust cover can be unscrewed through the hexagonal connector, which makes it easy to clean and replace the seal, thereby improving the service life of this utility model.

[0015] 3. The upper and lower end covers are fixed to the cylinder by connecting rods and nuts. When disassembling, simply remove the nuts. The easy-to-disassemble upper and lower end covers allow users to regularly clean and maintain the inside of the cylinder and piston components, thereby improving the service life of this utility model.

[0016] 4. The brush sleeve is fixed by the connecting plate, connecting rod and nut, which simplifies the fixing structure. The brush sleeve can be cleaned or replaced while the inside of the cylinder is being cleaned and maintained.

[0017] 5. The filter connector can prevent external oil containing impurities from entering the cylinder, thus affecting the service life of this utility model. It can also prevent oil in the cylinder from flowing out through the oil passage after being contaminated by particulate matter, thus affecting the hydraulic system. The oil filter screen is used to prevent external impurities from entering, while the activated carbon is used to adsorb impurities carried by the oil flowing out of the cylinder. This can effectively ensure the cleanliness of the oil in the cylinder, thereby improving the service life of this utility model. Attached Figure Description

[0018] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0019] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0020] Figure 2 This is a cross-sectional structural diagram of the present invention;

[0021] Figure 3 for Figure 2 A magnified view of a portion of point A in the middle;

[0022] Figure 4 This is an exploded view of the structure of this utility model.

[0023] In the diagram: 1. Cylinder; 2. Piston rod; 3. Piston; 41. Upper end cap; 411. Limiting step; 42. Lower end cap; 43. Cylinder inlet; 44. Connecting port; 45. Oil passage; 51. Brush sleeve; 52. Brush; 53. Connecting plate; 61. Seal; 611. Limiting ring; 62. Dustproof cover; 621. Hexagonal connector; 71. Connecting rod; 72. Nut; 81. Filter connector; 82. Oil filter screen; 83. Activated carbon. Detailed Implementation

[0024] The following will refer to the appendix in the embodiments of this utility model. Figure 1-4 The technical solutions in the embodiments of this utility model are clearly and completely described herein. Obviously, the described embodiments are only some embodiments of this utility model, and not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of this utility model.

[0025] Example:

[0026] like Figures 1 to 4As shown, this utility model discloses a novel hydraulic cylinder, including a cylinder barrel 1, a piston rod 2, a piston 3, an upper end cover 41, and a lower end cover 42. The upper end cover 41 and the lower end cover 42 are detachably connected to the upper and lower ends of the cylinder barrel 1. The piston 3 is movably disposed inside the cylinder barrel 1, and one end of the piston rod 2 is fixedly connected to the piston 3. The other end of the piston rod 2 extends upward through the upper end cover 41. This utility model has a detachable brush sleeve 51 on the upper end cover 41. The brush sleeve 51 contains a brush 52 that contacts the piston rod 2. The brush 52 is used to brush off particles on the piston rod 2, preventing particles from entering the cylinder barrel 1 with the piston rod 2, thereby improving the service life of this utility model.

[0027] In this utility model, the upper end cover 41 is provided with a sealing element 61 that is in contact with the piston rod 2. The sealing element 61 is used to prevent oil from leaking out of the cylinder 1. The specific structure of the sealing element 61 installed in the upper end cover 41 is as follows: a limiting step 411 is provided in the upper end cover 41, a limiting ring 611 is provided at the upper end of the sealing element 61 that abuts against the limiting step 411, and a dustproof cover 62 is provided in the upper end cover 41. The lower end of the dustproof cover 62 presses against the limiting ring 611, and the sealing element 61 is fixed by the dustproof cover 62.

[0028] The specific connection between the dustproof cover 62 and the upper cover 41 is as follows: the dustproof cover 62 and the upper cover 41 are connected by threads. A hexagonal connector 621 is provided on the upper end of the dustproof cover 62 above the upper cover 41. It should also be noted that the brush 52 is located above the hexagonal connector 621. After the brush cover 51 is removed, the dustproof cover 62 can be unscrewed through the hexagonal connector 621, so that the seal 61 can be cleaned and replaced, thereby improving the service life of this utility model.

[0029] The specific structure of the upper end cover 41 and the lower end cover 42 detachably connected to the cylinder 1 is as follows: a plurality of connecting rods 71 ​​are provided between the upper end cover 41 and the lower end cover 42. The upper end cover 41 and the lower end cover 42 are each provided with a cylinder insertion port 43, and the cylinder 1 is inserted into the cylinder insertion port 43. In addition, the upper end cover 41 and the lower end cover 42 are each provided with a connection port 44. The two ends of the connecting rods 71 ​​pass through the connection ports 44 of the upper end cover 41 and the lower end cover 42 respectively and are threaded with nuts 72. The upper end cover 41 and the lower end cover 42 are fixed to the cylinder 1 by the connecting rods 71 ​​and the nuts 72. When disassembling, the nuts 72 can be removed. The easy-to-disassemble upper end cover 41 and the lower end cover 42 make it convenient for users to clean and maintain the inside of the cylinder 1 and the piston 3 and other components at regular intervals, thereby improving the service life of this utility model.

[0030] The schematic diagram of the structure in which the brush sleeve 51 is detachably connected to the front cover plate is as follows: A connecting plate 53 is integrally formed on the brush sleeve 51. The connecting plate 53 is attached to the upper cover 41. The upper end of the connecting rod 71 passes through the connecting plate 53. The nut 72 at the upper end of the connecting rod 71 is pressed against the connecting plate 53. The brush sleeve 51 is also fixed by the connecting rod 71 and the nut 72 through the connecting plate 53. This connection method can simplify the fixing structure. The brush sleeve 51 can be cleaned or replaced while the inside of the cylinder 1 is being cleaned and maintained.

[0031] In this invention, both the upper end cover 41 and the lower end cover 42 are provided with oil passages 45 leading into the cylinder 1. These oil passages 45 are connected to the hydraulic system to allow oil to flow in and out, thereby controlling the up-and-down movement of the piston 3. Both the upper end cover 41 and the lower end cover 42 have filter connectors 81 threaded onto the oil passages 45. Specifically, the filter connector 81 contains an oil filter screen 82 and activated carbon 83. The oil filter screen 82 is located at the end of the filter connector 81 furthest from the upper end cover 41. The filter connector 81 prevents externally contaminated oil from entering the cylinder 1, thus affecting the service life of this invention. It also prevents oil in the cylinder 1 from being contaminated by particulate matter and flowing out through the oil passages 45, thus affecting the hydraulic system. The oil filter screen 82 prevents external impurities from entering, while the activated carbon 83 adsorbs impurities carried by the oil flowing out of the cylinder 1. This effectively ensures the cleanliness of the oil in the cylinder 1, thereby improving the service life of this invention.

[0032] It should also be noted that the terms used in this utility model, such as "front", "rear", "vertical", "horizontal", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limiting the scope of protection of this utility model.

[0033] The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A new type of hydraulic cylinder comprising a cylinder tube, a piston rod, a piston, an upper end cover and a lower end cover, characterized in that: The upper end cover and the lower end cover are detachably connected to the upper and lower ends of the cylinder barrel, the piston is movably arranged in the cylinder barrel, one end of the piston rod is fixedly connected with the piston, the other end of the piston rod is upwardly out of the upper end cover, the brush sleeve is detachably arranged on the upper end cover, the brush sleeve is provided with the brush in contact with the piston rod, the sealing element is arranged in the upper end cover and in contact with the piston rod, the upper end of the sealing element is provided with the limiting ring abutting against the limiting step, the dustproof gland is arranged in the upper end cover, the lower end of the dustproof gland is pressed on the limiting ring, the dustproof gland and the upper end cover are connected through threads, the hexagonal connector is arranged on the upper end of the dustproof gland and located above the upper end cover, and the brush is located above the hexagonal connector.

2. A new type of hydraulic cylinder according to claim 1, characterized in that: A plurality of connecting rods are arranged between the upper end cover and the lower end cover, cylinder barrel sockets are arranged on the upper end cover and the lower end cover, the cylinder barrel is inserted into the cylinder barrel sockets, connecting ports are arranged on the upper end cover and the lower end cover, and the two ends of the connecting rod pass through the connecting ports of the upper end cover and the lower end cover and are respectively screwed with nuts.

3. A new type of hydraulic cylinder according to claim 2, characterized in that: The connecting plate is integrally formed on the brush sleeve, the connecting plate is attached to the upper end cover, the upper end of the connecting rod passes through the connecting plate, and the nut on the upper end of the connecting rod is pressed above the connecting plate.

4. The novel hydraulic cylinder according to claim 1, characterized in that: The upper end cover and the lower end cover are both provided with oil passing channels passing into the cylinder barrel, and the upper end cover and the lower end cover are both screwed with filter connectors on the oil passing channels.

5. A novel hydraulic cylinder as claimed in claim 4, wherein: The filter connector is provided with an oil filter screen and activated carbon.

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