CN210566201U

CN210566201U - Piston rod with protection architecture

Info

Publication number: CN210566201U
Application number: CN201921217003.5U
Authority: CN
Inventors: 韦鹤兴; 韦达; 谢巍; 李伟
Original assignee: Zhejiang Tailian Low Temperature Technology Co Ltd
Current assignee: Zhejiang Tailian Low Temperature Technology Co Ltd
Priority date: 2019-07-30
Filing date: 2019-07-30
Publication date: 2020-05-19
Anticipated expiration: 2029-07-30

Abstract

The utility model discloses a piston rod with a protection structure, which comprises a piston rod body, a driving joint, a movable ring and a fixed ring; the front end of the piston rod body is protected from being damaged due to impact or vibration through the protective cover, and the piston rod body can be connected and matched with other components more quickly and tightly through the driving joint; the tail end of the driving joint is provided with a rubber gasket, and the other side of the rubber gasket is provided with a movable ring; the inner side of the drive joint is provided with a sliding contact part, the two ends of the piston rod body are provided with moving sections corresponding to the drive joint, the surfaces of the moving sections are smooth surface layers with low friction coefficients, along with the movement of the piston rod body, the drive joint is impacted and vibrated, and the moving sections move so as to push the movable ring, the movable ring is clamped with the groove part through the fixed round shaft, the piston rod body moves, impact force is further buffered to the reset spring, and the piston rod body is protected.

Description

Piston rod with protection architecture

Technical Field

The utility model relates to an engineering mechanical equipment technical field specifically is a piston rod with protection architecture.

Background

The piston rod is a connecting component for supporting the piston to do work, most of the piston rod is applied to an oil cylinder and an air cylinder movement executing component, and the piston rod is a movement component with frequent movement and high technical requirements. The hydraulic oil cylinder is taken as an example and comprises a cylinder barrel, a piston rod (an oil cylinder rod), a piston and an end cover. The quality of the processing quality directly influences the service life and the reliability of the whole product. The piston rod has high processing requirement, the surface roughness requirement of the piston rod is Ra0.4-0.8 um, and the requirements on coaxiality and wear resistance are strict. The piston rod is mainly used for piston rods for hydraulic pneumatics, engineering machinery and automobile manufacturing, guide posts of plastic machinery, roll shafts of packaging machinery and printing machinery, axes of textile machinery and conveying machinery and linear optical axes for linear motion. The piston rod is processed by rolling, and surface residual compressive stress is reserved on the surface layer, so that the sealing of surface micro cracks is facilitated, and the expansion of an erosion effect is hindered. Thereby improving the surface corrosion resistance and delaying the generation or the expansion of fatigue cracks, thereby improving the fatigue strength of the oil cylinder rod. But current piston rod simple structure, functional singleness is only a straight line type body of rod, lacks the reinforcement design, and piston rod self not only can have the rigidity friction with the connecting piece, receives striking and extrusion occasionally easily moreover, causes the piston rod to buckle and damages, has reduced life.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a piston rod with protection architecture to solve the problem that proposes among the above-mentioned background art.

In order to achieve the above object, the utility model provides a following technical scheme: a piston rod with a protection structure comprises a piston rod body, a driving joint, a movable ring and a fixed ring; the two ends of the piston rod body are provided with driving connectors, the front end of each driving connector is provided with a protective cover, and the front end of each protective cover is provided with a reinforcing rib ring; the tail end of the driving joint is provided with a rubber gasket, and the other side of the rubber gasket is provided with a movable ring; the outer side of the piston rod body is provided with two embedded grooves which are parallel to each other, and the embedded grooves are provided with fixed round shafts; the inner side of the movable ring is provided with a groove part corresponding to the fixed round shaft, the movable ring is clamped with the fixed round shaft through the groove part, and the movable ring is arranged on the outer side of the piston rod; the other side end of the movable ring is provided with a plurality of connecting holes which are uniformly distributed, the connecting holes are provided with return springs, the tail ends of the return springs are connected to the fixed ring, and the fixed ring is sleeved outside the piston rod body.

Preferably, the protection cover is a funnel-shaped structure with a wide front part and a narrow back part, and the section of the protection cover is of an isosceles trapezoid structure.

Preferably, the embedded groove is of a semi-cylindrical structure, and the inner diameter of the groove part is smaller than that of the embedded groove.

Preferably, the inner side of the drive joint is provided with a sliding contact part, two ends of the piston rod body are provided with moving sections corresponding to the drive joint, and the surfaces of the moving sections are smooth surface layers with low friction coefficients.

Preferably, the edges of two opposite end faces of the movable ring and the fixed ring are provided with corresponding connecting holes, the connecting holes are distributed on the same radial length along the center positions of the movable ring and the fixed ring, and the connecting holes are connected with a return spring.

Compared with the prior art, the beneficial effects of the utility model are that: the utility model has simple structure and strong practicability, the front end of the piston rod body is protected by the protective cover from being damaged by impact or vibration, and the drive joint enables the piston rod body to be connected and matched with other parts more quickly and tightly; the piston rod body both ends are provided with the removal district section corresponding to the drive connects, and removal district section surface is the smooth top layer that coefficient of friction is low, and along with the motion of piston rod body, the drive connects and receives striking and vibrations, removes in removal district section to promote movable ring, movable ring is through the joint of fixed round axle and concave part, removes at the piston rod body, and the impact force further cushions to reset spring, protection piston rod body.

Drawings

Fig. 1 is a schematic view of the overall structure of the present invention;

fig. 2 is a schematic view of the movable ring structure of the present invention.

In the figure: 1. a piston rod body; 2. a drive joint; 3. a protective cover; 4. a reinforcing rib ring; 5. a rubber gasket; 6. a movable ring; 7. embedding a groove; 8. fixing the round shaft; 9. a groove part; 10. connecting holes; 11. a return spring; 12. and (5) fixing the ring.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

In the description of the present invention, it should be noted that the terms "vertical", "upper", "lower", "horizontal", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplification of description, but do not indicate or imply that the device or element referred to must have a specific orientation, be constructed in a specific orientation, and be operated, and thus should not be construed as limiting the present invention.

In the description of the present invention, it should also be noted that, unless otherwise explicitly specified or limited, the terms "disposed," "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present invention can be understood according to specific situations by those skilled in the art.

Referring to fig. 1-2, the present invention provides a technical solution: a piston rod with a protection structure comprises a piston rod body 1, a driving joint 2, a movable ring 6 and a fixed ring 12; the two ends of the piston rod body 1 are provided with driving connectors 2, the front end of each driving connector 2 is provided with a protective cover 3, and the front end of each protective cover 3 is provided with a reinforcing rib ring 4; the tail end of the driving joint 2 is provided with a rubber gasket 5, and the other side of the rubber gasket 5 is provided with a movable ring 6; two embedded grooves 7 which are parallel to each other are formed in the outer side of the piston rod body 1, and a fixed circular shaft 8 is arranged on each embedded groove 7; the inner side of the movable ring 6 is provided with a groove part 9 corresponding to the fixed round shaft 8, the movable ring 6 is clamped with the fixed round shaft 8 through the groove part 9, and the movable ring is arranged on the outer side of the piston rod body 1; the other side end of the movable ring 6 is provided with a plurality of uniformly distributed connecting holes 10, the connecting holes 10 are provided with return springs 11, the tail ends of the return springs 11 are connected to a fixed ring 12, and the fixed ring 12 is sleeved on the outer side of the piston rod body 1.

Furthermore, the protection cover 3 is a funnel-shaped structure with a wide front part and a narrow back part, and the section of the protection cover 3 is of an isosceles trapezoid structure.

Further, embedded recess 7 is the semicylinder structure, and the internal diameter size of concave part 9 is less than the internal diameter size of embedded recess 7.

Furthermore, a sliding contact part is arranged on the inner side of the drive joint 2, moving sections corresponding to the drive joint 2 are arranged at two ends of the piston rod body 1, and the surfaces of the moving sections are smooth surface layers with low friction coefficients.

Furthermore, the edges of two opposite end faces of the movable ring 6 and the fixed ring 12 are provided with corresponding connecting holes 10, the connecting holes are distributed on the same radial length along the center positions of the movable ring 6 and the fixed ring 12, and the connecting holes 10 are connected with a return spring 11.

The working principle is as follows: the two ends of the piston rod body 1 are provided with driving connectors 2, the front end of each driving connector 2 is provided with a protective cover 3, the front end of each protective cover 3 is provided with a reinforcing rib ring 4, each protective cover 3 is of a funnel-shaped structure with a wide front part and a narrow back part, the section of each protective cover 3 is of an isosceles trapezoid structure, the front end of the piston rod body 1 is protected from being damaged due to impact or vibration through the protective covers 3, and the driving connectors 2 enable the piston rod body 1 to be connected and matched with other components more quickly and;

the tail end of the driving joint 2 is provided with a rubber gasket 5, and the other side of the rubber gasket 5 is provided with a movable ring 6; two embedded grooves 7 which are parallel to each other are formed in the outer side of the piston rod body 1, and a fixed circular shaft 8 is arranged on each embedded groove 7; the inner side of the movable ring 6 is provided with a groove part 9 corresponding to the fixed round shaft 8, the movable ring 6 is clamped with the fixed round shaft 8 through the groove part 9, and the movable ring is arranged on the outer side of the piston rod body 1; the other side of the movable ring 6 is provided with a plurality of uniformly distributed connecting holes 10, the connecting holes 10 are provided with reset springs 11, the tail ends of the reset springs 11 are connected to fixed rings 12, the fixed rings 12 are sleeved outside the piston rod body 1, the inner side of the driving joint 2 is provided with a sliding contact part, the two ends of the piston rod body 1 are provided with moving sections corresponding to the driving joint 2, the surfaces of the moving sections are smooth surface layers with low friction coefficients, along with the movement of the piston rod body 1, the driving joint 2 is impacted and vibrated, the moving sections move, so that the movable ring 6 is pushed, the movable ring 6 is clamped with the groove parts 9 through the fixed circular shafts 8, the piston rod body 1 moves, the impact force is further buffered to the reset springs 11, and the piston.

Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.

Claims

1. The utility model provides a piston rod with protection architecture which characterized in that: comprises a piston rod body (1), a driving joint (2), a movable ring (6) and a fixed ring (12); the two ends of the piston rod body (1) are provided with driving connectors (2), the front end of each driving connector (2) is provided with a protective cover (3), and the front end of each protective cover (3) is provided with a reinforcing rib ring (4); the tail end of the driving joint (2) is provided with a rubber gasket (5), and the other side of the rubber gasket (5) is provided with a movable ring (6); two parallel embedded grooves (7) are formed in the outer side of the piston rod body (1), and a fixed circular shaft (8) is arranged on each embedded groove (7); the inner side of the movable ring (6) is provided with a groove part (9) corresponding to the fixed round shaft (8), the movable ring (6) is clamped with the fixed round shaft (8) through the groove part (9), and the movable ring is arranged on the outer side of the piston rod body (1); the other side end of the movable ring (6) is provided with a plurality of uniformly distributed connecting holes (10), the connecting holes (10) are provided with return springs (11), the tail ends of the return springs (11) are connected to fixed ring rings (12), and the fixed ring rings (12) are sleeved on the outer side of the piston rod body (1).

2. The piston rod with the protection structure as claimed in claim 1, wherein: the protective cover (3) is of a funnel-shaped structure with a wide front part and a narrow back part, and the section of the protective cover (3) is of an isosceles trapezoid structure.

3. The piston rod with the protection structure as claimed in claim 1, wherein: the embedded groove (7) is of a semi-cylindrical structure, and the inner diameter of the groove part (9) is smaller than that of the embedded groove (7).

4. The piston rod with the protection structure as claimed in claim 1, wherein: the inner side of the driving joint (2) is provided with a sliding contact part, the two ends of the piston rod body (1) are provided with moving sections corresponding to the driving joint (2), and the surfaces of the moving sections are smooth surface layers with low friction coefficients.

5. The piston rod with the protection structure as claimed in claim 1, wherein: the edge of two opposite end faces of the movable ring (6) and the fixed ring (12) is provided with corresponding connecting holes (10), the connecting holes are distributed on the same radial length along the center positions of the movable ring (6) and the fixed ring (12), and the connecting holes (10) are connected with a return spring (11).