Piston rod with protective structure

Abstract

The utility model relates to the technical field of piston rods, in particular to a piston rod with a protective structure. The piston rod with the protection structure comprises a rod body, a plurality of sets of spherical grooves are formed in the rod body, and protection assemblies are arranged on the spherical grooves coaxially formed in the rod body. According to the piston rod with the protection structure, the multiple steel balls connected through the arc-shaped steel rods are arranged on the rod body of the piston rod, the annular structure formed by the steel balls is matched with the steel balls so that the rod body can be protected, and collision of part of external most falling objects to the rod body is effectively reduced; meanwhile, the distance from the outer spherical surface of the steel ball to the axis of the rod body is the same as the radius of the piston, so that when the rod body slides into the cylinder sleeve, the steel ball can roll along the inner wall of the cylinder sleeve while rotating around the rotating shaft, on one hand, the smooth degree of the rod body when the rod body stretches out and draws back along the cylinder sleeve is improved, and on the other hand, the steel ball can effectively improve the stability of the rod body; and the swing amplitude of the rod body sliding along the cylinder sleeve is reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of piston rods, in particular to a piston rod with a protection structure. Background Art

[0002] As a component with relatively frequent movement, the piston rod is mainly used in hydraulic pneumatic, construction machinery, piston rods for automobile manufacturing, guide columns of plastic machinery, rollers of packaging machinery and printing machinery, textile machinery, and axles for conveying machinery, and linear shafts for linear motion.

[0003] At present, there is basically no protection structure on the outside of the piston rod, resulting in easy damage to the piston rod after being knocked by some falling objects. At the same time, the piston rod relies on the piston to be slidably connected to the cylinder liner, resulting in a potential hazard of slight swing in the outer rod section when the piston rod slides along the cylinder liner.

[0004] Therefore, it is necessary to provide a new piston rod with a protection structure to solve the above technical problems. Summary of the Utility Model

[0005] To solve the above technical problems, the utility model provides a piston rod with a protection structure.

[0006] The piston rod with a protection structure provided by the utility model includes a rod body, and a plurality of groups of annularly distributed spherical grooves are formed on the rod body, and protection components are arranged on the spherical grooves coaxially arranged on the rod body:

[0007] Among them, the protection component includes steel balls. There are several steel balls, and several steel balls are respectively installed on the spherical grooves coaxially arranged on the rod body and are rotatably connected to the spherical grooves. A rotatably connected rotating shaft is fixedly installed on each steel ball, and connecting disks are fixedly installed at both ends of the rotating shaft. An arc-shaped steel rod is fixedly installed on the connecting disk between adjacent steel balls.

[0008] Preferably, the annular structure formed by the arc-shaped steel rods on the protection component is coaxially arranged with the rod body.

[0009] Preferably, the steel balls rotate along the axial direction of the rod body around the rotating shaft.

[0010] Preferably, one-third of the sphere of the steel ball is embedded in the spherical groove formed on the rod body and is rotatably connected to the spherical groove.

[0011] Preferably, a piston is fixedly installed at one end of the rod body.

[0012] Preferably, the distance from the outer spherical surface of the steel ball to the axis of the rod body is the same as the radius of the piston.

[0013] Compared with the related art, the piston rod with a protection structure provided by the present utility model has the following beneficial effects:

[0014] In the present utility model, a plurality of steel balls connected by arc-shaped steel rods are arranged on the rod body of the piston rod, and the annular structure formed by the steel balls and the steel balls can protect the rod body, effectively reducing the collision of some external falling objects on the rod body. At the same time, since the distance from the outer spherical surface of the steel ball to the axis of the rod body is the same as the radius of the piston, when the rod body slides into the cylinder liner, the steel ball can rotate around the rotating shaft and roll along the inner wall of the cylinder liner. On the one hand, it improves the smoothness of the rod body when telescoping along the cylinder liner, and on the other hand, the steel ball can effectively improve the stability of the rod body and reduce the swing amplitude of the rod body when sliding along the cylinder liner. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 is a schematic structural diagram of a preferred embodiment of the piston rod with a protection structure provided by the present utility model;

[0016] Figure 2 is Figure 1 the schematic plan view shown;

[0017] Figure 3 is Figure 1 the schematic structural diagram of the rod body shown;

[0018] Figure 4 is Figure 1 the schematic structural diagram of the protection component shown;

[0019] Figure 5 is Figure 4 the schematic plan view shown.

[0020] Reference numerals in the drawings: 1, rod body; 1a, spherical groove; 2, protection component; 21, steel ball; 22, rotating shaft; 23, connecting disc; 24, arc-shaped steel rod; 3, piston. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0021] In order to make the objectives, technical solutions and advantages of the present utility model clearer, the present utility model will be further described in detail below with reference to the drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present utility model and are not used to limit the present utility model.

[0022] The following describes the specific implementation of the present utility model in detail with reference to specific embodiments.

[0023] Please refer to Figures 1 to 5 , a piston rod with a protection structure provided by an embodiment of the present utility model, the piston rod with a protection structure includes a rod body 1 and a protection component 2.

[0024] In an embodiment of the present utility model, please refer to Figures 1 to 4 , a plurality of groups of annularly distributed spherical grooves 1a are formed on the rod body 1, and a protective component 2 is provided on each of the spherical grooves 1a coaxially arranged on the rod body 1. The protective component 2 includes steel balls 21. There are several steel balls 21, and several steel balls 21 are respectively installed on the spherical grooves 1a coaxially arranged on the rod body 1 and are rotatably connected to the spherical grooves 1a. Specifically, the steel balls 21 rotate along the axial direction of the rod body 1 around the rotating shaft 22, and a rotatably connected rotating shaft 22 is fixedly installed on each steel ball 21. Both ends of the rotating shaft 22 are fixedly installed with connection disks 23. An arc-shaped steel rod 24 is fixedly installed on the connection disk 23 between adjacent steel balls 21. The annular structure formed by the arc-shaped steel rods 24 on the protective component 2 is coaxially arranged with the rod body 1;

[0025] One end of the rod body 1 is fixedly installed with a piston 3, and the distance from the outer spherical surface of the steel ball 21 to the axis of the rod body 1 is the same as the radius of the piston 3.

[0026] It should be noted that: a plurality of steel balls 21 connected by arc-shaped steel rods 24 are arranged on the rod body 1 of the piston rod, and the annular structure formed by the steel balls 21 and the steel balls 21 can protect the rod body 1, effectively reducing the collision of some external falling objects on the rod body 1. At the same time, since the distance from the outer spherical surface of the steel ball 21 to the axis of the rod body 1 is the same as the radius of the piston 3, when the rod body 1 slides into the cylinder liner, the steel balls 21 can rotate around the rotating shaft 22 and roll along the inner wall of the cylinder liner. On the one hand, it improves the smoothness of the rod body 1 when telescoping along the cylinder liner, and on the other hand, the steel balls 21 can effectively improve the stability of the rod body 1 and reduce the swing amplitude of the rod body 1 when sliding along the cylinder liner;

[0027] Among them, one-third of the sphere of the steel ball 21 is embedded in the spherical groove 1a formed on the rod body and is rotatably connected to the spherical groove 1a, so that the rotating shaft 22 and the connection disk 23 on the steel ball 21 are located outside the rod body 1.

[0028] The working principle of the piston rod with a protective structure provided by the present utility model is as follows:

[0029] A plurality of steel balls 21 connected by arc-shaped steel rods 24 are arranged on the rod body 1 of the piston rod, and the annular structure formed by the steel balls 21 and the steel balls 21 can protect the rod body 1, effectively reducing the collision of some external falling objects on the rod body 1. At the same time, since the distance from the outer spherical surface of the steel ball 21 to the axis of the rod body 1 is the same as the radius of the piston 3, when the rod body 1 slides into the cylinder liner, the steel balls 21 can rotate around the rotating shaft 22 and roll along the inner wall of the cylinder liner. On the one hand, it improves the smoothness of the rod body 1 when telescoping along the cylinder liner, and on the other hand, the steel balls 21 can effectively improve the stability of the rod body 1 and reduce the swing amplitude of the rod body 1 when sliding along the cylinder liner.

[0030] The circuits and controls involved in the present utility model are all prior arts and will not be elaborated here.

[0031] The above are only the embodiments of the present utility model, and do not limit the patent scope of the present utility model accordingly. Any equivalent structure or equivalent process transformation made by using the content of the specification and drawings of the present utility model, or directly or indirectly applied in other related technical fields, shall be equally included in the patent protection scope of the present utility model.

Claims

1. A piston rod with a protective structure, characterized in that: The invention comprises a rod body (1), wherein the rod body (1) is provided with a plurality of groups of annularly distributed spherical grooves (1a), and each of the coaxially arranged spherical grooves (1a) on the rod body (1) is provided with a protective component (2): The protection component (2) comprises a steel ball (21), wherein a plurality of the steel balls (21) are respectively mounted on a spherical groove (1a) coaxially arranged on the rod body (1) and rotatably connected to the spherical groove (1a), and a rotatably connected rotating shaft (22) is fixedly mounted on each of the steel balls (21), and connecting plates (23) are fixedly mounted at both ends of the rotating shaft (22), and an arc-shaped steel rod (24) is fixedly mounted on the connecting plates (23) between adjacent steel balls (21).

2. The piston rod with a protective structure according to claim 1, characterized in that: The annular structure formed by the arc-shaped steel rods (24) on the protection component (2) is coaxially arranged with the rod body (1).

3. The piston rod with a protective structure according to claim 2, characterized in that: The steel ball (21) rotates axially around the rotating shaft (22) along the rod body (1).

4. The piston rod with a protective structure according to claim 3, characterized in that: One third of the sphere of the steel ball (21) is embedded in the spherical groove (1a) provided on the rod body and is rotatably connected to the spherical groove (1a).

5. The piston rod with a protective structure according to claim 1, characterized in that: A piston (3) is fixedly mounted on one end of the rod body (1).

6. The piston rod with a protective structure according to claim 5, characterized in that: The distance between the outer spherical surface of the steel ball (21) and the axis of the rod body (1) is the same as the radius of the piston (3).

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