CN222746360U

CN222746360U - Piston rod tilting prevention device

Info

Publication number: CN222746360U
Application number: CN202421642982.XU
Authority: CN
Inventors: 斯奉波; 斯仁杰; 斯吉顺; 邬雪萍
Original assignee: Ningbo Guante Machinery Parts Co ltd
Current assignee: Ningbo Guante Machinery Parts Co ltd
Priority date: 2024-07-12
Filing date: 2024-07-12
Publication date: 2025-04-11
Anticipated expiration: 2034-07-12

Abstract

The utility model embodiment discloses a piston rod anti-tilt device in the field of piston rod technology. It includes a piston rod that is telescopic in the middle of a cylinder barrel, a fixing ring block 1 is installed at the upper end of the cylinder barrel, a fixing ring block 2 is installed at the upper end of the piston rod, a plurality of limit rods are installed between the fixing ring block 1 and the fixing ring block 2, and an anti-tilt assembly that prevents the piston rod from tilting is installed in the middle of the limit rod. When the piston rod extends from the inside of the cylinder barrel to lift a heavy object, it simultaneously drives the long rod to move upward. Under the limitation of the long rod, the piston rod cannot rotate, and then the limit ring is moved upward from the lower end of the piston rod to a suitable position. Through the limitation of the limit ring by the plurality of long rods, the roller always contacts the inner wall of the piston rod. When the heavy object presses down on the piston rod, the piston rod is prevented from deflecting, so as to avoid tearing of the upper end of the cylinder barrel.

Description

Piston rod tilting prevention device

Technical Field

The embodiment of the utility model relates to the technical field of piston rods, in particular to a piston rod inclination preventing device.

Background

The piston rod is a connecting component for supporting the piston to do work, and is a moving component with frequent movement and high technical requirements. Taking a hydraulic cylinder as an example, the hydraulic cylinder consists of a cylinder barrel, a piston rod (cylinder rod), a piston and an end cover.

In the use of pneumatic cylinder, the hydro-cylinder is vertical to be placed and its piston rod moves along vertical direction, when the piston rod stretches out to the top and keeps hovering the state, because the top end of piston rod is supporting the heavy object, if the piston rod is in the focus department that is not in the heavy object, the heavy object still can exert the oblique direction force to the piston rod for the piston rod can have the risk of horizontal direction skew, can exert the oblique direction force to the top of cylinder when loading promptly the piston rod of pneumatic cylinder, makes the piston rod easily take place the skew and causes the cylinder top of pneumatic cylinder to produce tearing.

Disclosure of utility model

Therefore, the embodiment of the utility model provides a piston rod inclination prevention device, which is used for solving the problem that the piston rod which is deviated in the prior art is easy to cause tearing of the top of a cylinder barrel of a hydraulic cylinder.

In order to achieve the above object, the embodiment of the present utility model provides the following technical solutions:

A piston rod tilting prevention device comprises a piston rod which stretches out and draws back in the middle of a cylinder barrel.

The upper end of the cylinder barrel is provided with a first fixed ring block, and the upper end of the piston rod is provided with a second fixed ring block.

A plurality of limiting rods are arranged between the first fixed ring block and the second fixed ring block, and an inclination prevention component for preventing the piston rod from inclining is arranged in the middle of each limiting rod.

The middle part of piston rod is vertical to be seted up a plurality of locating holes that are used for carrying out the location to anti-tilting subassembly.

The anti-tilting assembly comprises a plurality of rollers clung to the side wall of the piston rod, and the anti-tilting assembly comprises a limiting ring for supporting and limiting the rollers.

Further, a plurality of first limiting holes for limiting the limiting rods are formed in the middle of the first fixed ring block, and a plurality of second limiting holes for limiting the limiting rods in cooperation with the first limiting holes are formed in the middle of the second fixed ring block.

Further, the first limiting holes are circumferentially distributed at equal intervals in the middle of the first fixed ring block, the second limiting holes are circumferentially distributed at equal intervals in the middle of the second fixed ring block, and the first limiting holes and the second limiting holes are concentric circles.

Further, the limiting rod comprises a long rod, the long rod is positioned in the cavity of the first limiting hole and the second limiting hole, the upper end of the long rod is provided with external threads, and the upper end of the long rod is provided with a nut for limiting the long rod in a matched mode through the external threads.

Further, a third limiting ring block is arranged at the upper end of the long rod, the third limiting ring block is arranged below the second fixing ring block, the nut is arranged above the second fixing ring block, a limiting block is arranged at the bottom end of the long rod, and the limiting block is arranged below the first fixing ring block.

Further, the mid-mounting of running roller has the pivot that is used for carrying out spacing to the running roller, a plurality of dysmorphism pieces that are used for carrying out spacing to the pivot are installed to the inner wall of spacing ring, threaded hole has been seted up at the middle part of dysmorphism piece.

Further, screw rods are arranged at the left end and the right end of the limiting ring, and a plurality of limiting holes III for sliding of the long rod are formed in the middle of the limiting ring.

The embodiment of the utility model has the following advantages:

When the piston rod stretches out jack-up heavy object from the inside of cylinder, synchronous drive stock upwards removes, under the spacing of stock, makes the piston rod unable take place to rotate, and the lower extreme with the spacing ring from the piston rod upwards moves to suitable position afterwards, and is spacing to the spacing ring through a plurality of stock for the running roller is contradicted with the inner wall of piston rod all the time, and when the heavy object pushed down the piston rod, avoid the piston rod to take place the skew, in order to avoid causing the condition that the cylinder upper end took place to tear.

Drawings

In order to more clearly illustrate the embodiments of the present utility model or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below. It will be apparent to those of ordinary skill in the art that the drawings in the following description are exemplary only and that other implementations can be obtained from the extensions of the drawings provided without inventive effort.

The structures, proportions, sizes, etc. shown in the present specification are shown only for the purposes of illustration and description, and are not intended to limit the scope of the utility model, which is defined by the claims, so that any structural modifications, changes in proportions, or adjustments of sizes, which do not affect the efficacy or the achievement of the present utility model, should fall within the ambit of the technical disclosure.

FIG. 1 is a schematic diagram of the overall structure of the present utility model;

FIG. 2 is a schematic view of the installation of a piston rod of the present utility model;

FIG. 3 is a schematic view of a stop lever according to the present utility model;

FIG. 4 is a schematic view of the anti-tilting assembly of the present utility model.

In the figure, a cylinder barrel 100, a piston rod 110, a positioning hole 111, a fixed ring block 120, a limiting hole 121, a fixed ring block 130 and a limiting hole 131;

200-of a limiting rod, 210-of a long rod, 211-of an external thread, 212-of a nut, 213-of a limiting ring block III and 214-of a limiting block;

300-anti-tilting assembly, 310-roller, 311-rotating shaft, 320-limiting ring, 321-special-shaped block, 322-threaded hole, 323-screw rod and 324-limiting hole III.

Detailed Description

Other advantages and advantages of the present utility model will become apparent to those skilled in the art from the following detailed description, which, by way of illustration, is to be read in connection with certain specific embodiments, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.

The terms such as "upper", "lower", "left", "right", "middle" and the like are also used in the present specification for convenience of description, but are not intended to limit the scope of the present utility model, and the changes or modifications of the relative relationship thereof are considered to be within the scope of the present utility model without substantial modification of the technical content.

Referring to fig. 1-4, the present utility model provides an anti-tilting device for a piston rod.

The anti-tilting device comprises a cylinder barrel 100, a limiting rod 200 and an anti-tilting component 300, wherein the middle part of the cylinder barrel 100 is connected with a piston rod 110 which stretches out and draws back in the cylinder barrel 100, the middle part of the piston rod 110 is vertically provided with a plurality of positioning holes 111 for positioning the anti-tilting component 300, and when the anti-tilting component 300 is limited, one end of a screw 323 is screwed into a cavity of the positioning hole 111, so that the height of the anti-tilting component 300 is positioned.

The upper end of the cylinder barrel 100 is fixedly provided with a first fixed ring block 120, the middle part of the first fixed ring block 120 is provided with a plurality of first limiting holes 121 for limiting the limiting rod 200, and the long rod 210 is positioned in the cavity of the first limiting holes 121.

The upper end of the piston rod 110 is fixedly provided with a second fixed ring block 130, a plurality of second limiting holes 131 for limiting the limiting rod 200 by matching with the first limiting holes 121 are formed in the middle of the second fixed ring block 130, and the long rod 210 is simultaneously positioned in the hole cavity of the second limiting holes 131. The first limiting holes 121 are circumferentially equidistant in the middle of the first fixed ring block 120, the second limiting holes 131 are circumferentially equidistant in the middle of the second fixed ring block 130, and the first limiting holes 121 and the second limiting holes 131 are concentric circles, so that the long rod 210 limits the piston rod 110 and the piston rod 110 is prevented from rotating.

A plurality of limiting rods 200 are installed between the first fixed ring block 120 and the second fixed ring block 130, the limiting rods 200 comprise long rods 210, the long rods 210 are positioned in the cavities of the first limiting holes 121 and the second limiting holes 131, external threads 211 are machined at the upper ends of the long rods 210, and nuts 212 for limiting the long rods 210 in cooperation with the external threads 211 are installed at the upper ends of the long rods 210.

The third limiting ring block 213 is installed at the upper end of the long rod 210, the third limiting ring block 213 is located below the second fixing ring block 130, the nut 212 is located above the second fixing ring block 130, the limiting block 214 is installed at the bottom end of the long rod 210, and the limiting block 214 is located below the first fixing ring block 120.

The long rod 210 penetrates into the hole cavity of the second limiting hole 131 through the first limiting hole 121 and is limited by the third limiting ring block 213, the nut 212 is matched with the external thread 211 to be screwed into the upper end of the long rod 210, the second fixing ring block 130 is clamped, the piston rod 110 is further limited, the piston rod 110 is prevented from rotating, the positioning hole 111 is positioned, and the screw 323 is conveniently inserted into the hole cavity of the positioning hole 111 to position the limiting ring 320.

The middle part of the limiting rod 200 is provided with an anti-tilting component 300 for preventing the piston rod 110 from tilting, the anti-tilting component 300 comprises a plurality of rollers 310 clung to the side wall of the piston rod 110, and the middle part of the rollers 310 is fixedly provided with a rotating shaft 311 for limiting the rollers 310.

The anti-tilting assembly 300 comprises a limiting ring 320 for supporting and limiting the roller 310, a plurality of special-shaped blocks 321 for limiting the rotating shaft 311 are fixedly arranged on the inner wall of the limiting ring 320, and the rotating shaft 311 is movably arranged on two sides of the special-shaped blocks 321.

Threaded holes 322 are formed in the middle of the special-shaped block 321, screw rods 323 are mounted at the left end and the right end of the limiting ring 320, and a plurality of limiting holes three 324 for sliding of the long rod 210 are formed in the middle of the limiting ring 320.

When the piston rod 110 stretches out from the interior of the cylinder barrel 100 to jack up a heavy object, the long rod 210 is synchronously driven to move upwards, the piston rod 110 cannot rotate under the limit of the long rod 210, then the limiting ring 320 moves upwards to a proper position from the lower end of the piston rod 110, the screw 323 is rotated, one end of the screw 323 is screwed into the hole cavity of the positioning hole 111, the height of the limiting ring 320 is further positioned, the limiting ring 320 is limited by the long rods 210, the roller 310 always abuts against the inner wall of the piston rod 110, and when the heavy object pushes down the piston rod 110, the piston rod 110 is prevented from shifting, so that the upper end of the cylinder barrel 100 is prevented from being torn.

While the utility model has been described in detail in the foregoing general description and specific examples, it will be apparent to those skilled in the art that modifications and improvements can be made thereto. Accordingly, such modifications or improvements may be made without departing from the spirit of the utility model and are intended to be within the scope of the utility model as claimed.

Claims

1. The utility model provides a piston rod anti-tilting device, includes piston rod (110) that stretches out and draws back in the middle part of cylinder (100), its characterized in that:

the upper end of the cylinder barrel (100) is provided with a first fixed ring block (120), and the upper end of the piston rod (110) is provided with a second fixed ring block (130);

A plurality of limiting rods (200) are arranged between the first fixed ring block (120) and the second fixed ring block (130), and an anti-tilting component (300) for preventing the piston rod (110) from tilting is arranged in the middle of the limiting rods (200);

The middle part of the piston rod (110) is vertically provided with a plurality of positioning holes (111) for positioning the anti-tilting assembly (300);

The anti-tilting assembly (300) comprises a plurality of rollers (310) which are clung to the side wall of the piston rod (110), and the anti-tilting assembly (300) comprises a limiting ring (320) for supporting and limiting the rollers (310).

2. The piston rod tilting prevention device according to claim 1, wherein a plurality of first limiting holes (121) for limiting the limiting rod (200) are formed in the middle of the first fixed ring block (120), and a plurality of second limiting holes (131) for limiting the limiting rod (200) in cooperation with the first limiting holes (121) are formed in the middle of the second fixed ring block (130).

3. The device for preventing the piston rod from tilting according to claim 2, wherein the first limiting holes (121) are circumferentially and equidistantly distributed in the middle of the first fixed ring block (120), the second limiting holes (131) are circumferentially and equidistantly distributed in the middle of the second fixed ring block (130), and the first limiting holes (121) and the second limiting holes (131) are concentric circles.

4. The piston rod tilting prevention device according to claim 2, wherein the limiting rod (200) comprises a long rod (210), the long rod (210) is positioned in the cavity of the first limiting hole (121) and the second limiting hole (131), an external thread (211) is machined at the upper end of the long rod (210), and a nut (212) for limiting the long rod (210) in cooperation with the external thread (211) is installed at the upper end of the long rod (210).

5. The tilting prevention device for a piston rod according to claim 4, wherein a third limiting ring block (213) is arranged at the upper end of the long rod (210), the third limiting ring block (213) is arranged below the second fixing ring block (130), the nut (212) is arranged above the second fixing ring block (130), a limiting block (214) is arranged at the bottom end of the long rod (210), and the limiting block (214) is arranged below the first fixing ring block (120).

6. The piston rod tilting prevention device according to claim 1, wherein a rotating shaft (311) for limiting the roller (310) is arranged in the middle of the roller (310), a plurality of special-shaped blocks (321) for limiting the rotating shaft (311) are arranged on the inner wall of the limiting ring (320), and threaded holes (322) are formed in the middle of the special-shaped blocks (321).

7. The tilting prevention device for a piston rod according to claim 4, wherein the left and right ends of the limiting ring (320) are provided with screws (323), and a plurality of limiting holes (324) for sliding the long rod (210) are formed in the middle of the limiting ring (320).