CN-224229224-U - Piston rod convenient to installation

Abstract

The application relates to the technical field of piston rods, in particular to a piston rod convenient to install, which comprises a main rod body and a friction sleeve, wherein the friction sleeve is sleeved outside the main rod body, the side wall of the main rod body is attached to the inner wall of the friction sleeve, the end part of the main rod body, which is positioned in the friction sleeve, is provided with an outer conical thread, the friction sleeve is internally provided with an inner conical thread which is adapted to the outer conical thread, a fixing assembly is arranged between the main rod body and the friction sleeve, the fixing assembly is positioned at a non-friction section of the friction sleeve, and a sealing element is arranged between the main rod body and the friction sleeve. The application has the effects of improving the problem that the surface of the piston rod is worn and needs to be replaced integrally and prolonging the service life of the piston rod.

Inventors

• LI HAIBO
• LI JIAN
• SHEN ZHANGHUA
• Jiao Weiya
• LI GUOCHUN

Assignees

• 江阴市普菲克液压设备有限公司

Dates

Publication Date

20260512

Application Date

20250623

Claims (4)

1. 1. The piston rod convenient to install is characterized by comprising a main rod body (1) and a friction sleeve (2), wherein the friction sleeve (2) is sleeved outside the main rod body (1), the side wall of the main rod body (1) is attached to the inner wall of the friction sleeve (2), an outer conical thread (11) is arranged at the end part of the main rod body (1) positioned in the friction sleeve (2), an inner conical thread (21) which is matched with the outer conical thread (11) is arranged in the friction sleeve (2), a fixing component (3) is arranged between the main rod body (1) and the friction sleeve (2), the fixing component (3) is positioned at a non-friction section of the friction sleeve (2), and a sealing element (4) is arranged between the main rod body (1) and the friction sleeve (2).
2. 2. The piston rod convenient to install according to claim 1, wherein the fixing assembly (3) comprises a fixing bolt (31) and a fixing nut (32), blind holes for the fixing bolt (31) to pass through are formed in the main rod body (1) and the friction sleeve (2), and the fixing bolt (31) is connected to the end portion of the fixing nut (32) penetrating out of the friction sleeve (2) and the main rod body (1).
3. 3. The piston rod convenient to install according to claim 1, wherein the sealing piece (4) is a rubber sealing ring, a clamping groove is formed in the friction sleeve (2), the clamping groove is arranged in a circular ring shape, the clamping groove is located at a cylinder opening of the friction sleeve (2), and the rubber sealing ring is embedded in the clamping groove.
4. 4. The piston rod convenient to install according to claim 1, wherein the friction sleeve (2) is made of gradient composite materials, a copper alloy wear-resistant layer is arranged on the inner side, a plasma-sprayed Cr3C2-NiCr coating is arranged on the outer layer, and a transition area is of a gradient sintering structure.

Description

Piston rod convenient to installation Technical Field The utility model relates to the technical field of piston rods, in particular to a piston rod convenient to install. Background The friction surface of the piston rod always moves back and forth in use, once the surface of the piston rod is worn in a machine, the whole piston rod can be possibly caused to have a use problem, the whole piston rod needs to be replaced, a great amount of cost is wasted, in the service life of the piston rod, the most important is the quality of a base body, but the material is not easy to improve, and the worn position can be conveniently replaced and the cost can be reduced only by changing the structure of the piston rod. Disclosure of utility model In order to solve the problem that the surface of a piston rod is worn and needs to be replaced integrally, the service life of the piston rod is prolonged, and the piston rod is convenient to install. The piston rod convenient to install provided by the application adopts the following technical scheme: The utility model provides a piston rod convenient to installation, includes the main rod body and friction sleeve, the friction sleeve cover is located the main rod body outside, the lateral wall laminating of the main rod body is in friction sleeve's inner wall, the main rod body is located the tip of friction sleeve and is provided with outer cone thread, be provided with the interior cone thread that the adaptation is in outer cone thread in the friction sleeve, be provided with fixed subassembly between main rod body and the friction sleeve, fixed subassembly is located friction sleeve's non-friction section, be provided with the sealing member between main rod body and the friction sleeve. Preferably, the fixing assembly comprises a fixing bolt and a fixing nut, blind holes for the fixing bolt to pass through are formed in the main rod body and the friction sleeve, and the fixing bolt is connected to the end portion of the fixing nut, which passes out of the friction sleeve and the main rod body. Preferably, the sealing element is a rubber sealing ring, a clamping groove is formed in the friction sleeve, the clamping groove is arranged in a circular ring shape, the clamping groove is located at the cylinder opening of the friction sleeve, and the rubber sealing ring is embedded in the clamping groove. Preferably, the friction sleeve is made of gradient composite materials, the inner side is a copper alloy wear-resistant layer, the outer layer is a plasma spraying Cr3C2-NiCr coating, and the transition area is of a gradient sintering structure. In summary, the application has the following beneficial technical effects: According to the piston rod convenient to install, the piston rod is designed into the main rod body and the friction sleeve in a split mode, only the friction sleeve is required to be replaced during maintenance, material waste caused by traditional integral replacement is avoided, maintenance cost is reduced, and the main rod body and the friction sleeve are quickly disassembled and assembled through the external conical threads, the internal conical threads and the fixing assembly, so that the problem that the surface of the piston rod is worn and needs to be replaced integrally is solved, and the service life of the piston rod is prolonged. Drawings FIG. 1 is a schematic illustration of a piston rod for easy installation in an embodiment of the present application; FIG. 2 is a schematic illustration of the internal structure of a friction sleeve for use in an embodiment of the present application. The reference numerals comprise 1, a main rod body, 11, an outer conical thread, 2, a friction sleeve, 21, an inner conical thread, 3, a fixing assembly, 31, a fixing bolt, 32, a fixing nut and 4, and a sealing element. Detailed Description In order that the manner in which the utility model may be better understood, a more particular description of embodiments of the utility model will be rendered by reference to specific embodiments thereof which are illustrated in the appended drawings, it will be apparent that they are merely illustrative of some, but not all embodiments of the utility model that may be made by those skilled in the art without departing from the scope of the utility model. In the description of the present utility model, it should be noted that, directions or positional relationships indicated by terms such as "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc., are based on directions or positional relationships shown in the drawings, are merely for convenience of describing the present utility model and simplifying the description, and are not to be construed as limitations of the present utility model, but rather as indicating or implying that the apparatus or element to be referred to must have a specific direction and a specific direction configuration and operation, and the terms "first", "s