CN217327901U

CN217327901U - Cylinder bottom structure with prevent shear screw

Info

Publication number: CN217327901U
Application number: CN202221119055.0U
Authority: CN
Inventors: 张振
Original assignee: Tianjin Diguang Empire Mechanical Equipment Co ltd
Current assignee: Tianjin Diguang Empire Mechanical Equipment Co ltd
Priority date: 2022-05-10
Filing date: 2022-05-10
Publication date: 2022-08-30
Anticipated expiration: 2032-05-10

Abstract

The utility model relates to a cylinder bottom structure with prevent shear screw, including cylinder bottom body, adapting unit, the cylinder bottom body is connected with the cylinder through a plurality of evenly distributed's adapting unit, be equipped with a plurality of evenly distributed's shoulder hole on the cylinder bottom body, adapting unit includes connecting screw, anti-shear cutting cover, spring washer, connecting screw's screwhead passes shoulder hole and screw hole threaded connection to make cylinder bottom body be connected with the cylinder, connecting screw's nut is located the shoulder hole. The utility model discloses the cover has the anti-shear cover in the outside of connecting screw, and the diameter of the ladder face in the shoulder hole is greater than the diameter of anti-shear cover, for the anti-shear cover leaves the removal space, when the cylinder takes place the inflation, the cylinder drives the radial translation of connecting screw to drive the anti-shear cover and take place the dislocation at the relative cylinder bottom in the shoulder hole, avoided the condition that connecting screw was cut, guaranteed the normal use of super high pressure hydro-cylinder.

Description

Cylinder bottom structure with prevent shear screw

Technical Field

The utility model relates to a hydro-cylinder technical field, in particular to cylinder bottom structure with prevent shear screw.

Background

The cylinder barrel and the cylinder bottom in the ultrahigh-pressure hydraulic oil cylinder are fixed through screws, the hydraulic pressure used by the ultrahigh-pressure hydraulic oil cylinder is very high, the cylinder barrel can expand in the working process, the cylinder bottom can not expand, the screws connected with the cylinder bottom and the cylinder barrel can receive shearing force, the situation that the screws are cut off can occur, and finally the whole cylinder is damaged and cannot be used, so that normal work is influenced.

SUMMERY OF THE UTILITY MODEL

The purpose of the utility model is to solve the problem mentioned in the background art, overcome the not enough that exists among the prior art.

In order to achieve the above object, an embodiment of the present invention provides a cylinder bottom structure with anti-shearing screws, including a cylinder bottom body and a connection component, wherein the cylinder bottom body is connected to a cylinder barrel through a plurality of uniformly distributed connection components, the cylinder bottom body is provided with a plurality of uniformly distributed stepped holes, a threaded hole is provided at a position on the cylinder barrel corresponding to the stepped holes, the connection component includes a connection screw, an anti-shearing sleeve, and a spring washer, a screw head of the connection screw passes through the stepped hole to be in threaded connection with the threaded hole, so that the cylinder bottom body is connected to the cylinder barrel, a nut of the connection screw is located in the stepped hole, the connection screw is sleeved with the spring washer and the anti-shearing sleeve, and the spring washer is located between the nut and the anti-shearing sleeve, the nut on the connection screw applies pressure to the anti-shearing sleeve through the spring washer, so that the anti-shearing sleeve is tightly attached to a stepped surface of the stepped hole, the diameter of the step surface in the step hole is larger than the outer diameter of the anti-shearing sleeve.

Preferred by any of the above-mentioned schemes, the shoulder hole is including being first shoulder hole and the second shoulder hole that distributes from top to bottom, the internal diameter of first shoulder hole is greater than the internal diameter of second shoulder hole, and the juncture of first shoulder hole and second shoulder hole forms the ladder face, the anti-shear cover is located first shoulder hole, the internal diameter of second shoulder hole is greater than the diameter of connecting screw.

Preferably, in any of the above aspects, the inner diameter of the anti-shearing sleeve is larger than the diameter of the connection screw and smaller than the inner diameter of the second stepped hole, and the outer diameter of the anti-shearing sleeve is larger than the diameter of the screw head.

Preferably, according to any one of the above schemes, the connecting screw below the spring washer is sleeved with an elastic ring, the anti-shearing sleeve is sleeved outside the elastic ring, and the elastic ring is attached to the connecting screw and the anti-shearing sleeve by the elasticity of the elastic ring.

By any of the above schemes, preferably, the peripheral wall of the elastic ring is provided with a plurality of through holes which are uniformly distributed, and the central line of the through hole is perpendicular to the central line of the elastic ring.

Preferably, in any of the above aspects, a gap between the anti-shearing sleeve and the first stepped hole is smaller than a gap between the connecting screw and the second stepped hole.

Compared with the prior art, the utility model has the advantages and beneficial effects do:

the anti-shearing sleeve is sleeved on the outer side of the connecting screw, the diameter of the step surface in the step hole is larger than that of the anti-shearing sleeve, a moving space is reserved for the anti-shearing sleeve, when the cylinder barrel expands, the cylinder barrel drives the connecting screw to move in a radial direction so as to drive the anti-shearing sleeve to move relative to the cylinder bottom in the step hole in a staggered manner, the condition that the connecting screw is sheared is avoided, and normal use of the ultrahigh pressure cylinder is guaranteed.

Additional aspects and advantages of the invention will be set forth in part in the description which follows and, in part, will be obvious from the description, or may be learned by practice of the invention.

Drawings

The above and/or additional aspects and advantages of the present invention will become apparent and readily appreciated from the following description of the embodiments, taken in conjunction with the accompanying drawings of which:

fig. 1 is a schematic overall structural diagram of a cylinder bottom structure with a shear screw prevention according to an embodiment of the present invention;

FIG. 2 is an enlarged view of a portion of FIG. 1;

fig. 3 is a distribution diagram of the through holes on the elastic ring.

Wherein: 1. a cylinder bottom body; 2. a cylinder barrel; 3. a first stepped hole; 4. a connecting screw; 5. a spring washer; 6. a shear prevention sleeve; 7. an elastic ring; 8. a second stepped bore.

Detailed Description

Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like reference numerals refer to the same or similar elements or elements having the same or similar function throughout. The embodiments described below with reference to the drawings are exemplary and intended to be used for explaining the present invention, and should not be construed as limiting the present invention.

In the present invention, unless otherwise expressly specified or limited, the terms "mounted," "connected," and "fixed" are to be construed broadly and may, for example, be fixedly connected, detachably connected, or integrally connected; 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.

As shown in fig. 1-2, a cylinder bottom structure with shear-resistant screws provided in an embodiment of the present invention includes a cylinder bottom body 1 and a connecting part, wherein the cylinder bottom body 1 is connected to a cylinder barrel 2 through a plurality of connecting parts uniformly distributed, the cylinder bottom body 1 is provided with a plurality of stepped holes uniformly distributed, a threaded hole is provided at a position on the cylinder barrel 2 corresponding to the stepped holes, the connecting part includes a connecting screw 4, a shear-resistant sleeve 6, and a spring washer 5, a screw head of the connecting screw 4 passes through the stepped hole and is in threaded connection with the threaded hole, so that the cylinder bottom body 1 is connected to the cylinder barrel 2, a nut of the connecting screw 4 is located in the stepped hole, the connecting screw 4 is sleeved with the spring washer 5 and the shear-resistant sleeve 6, the spring washer 5 is located between the nut and the shear-resistant sleeve 6, the nut on the connecting screw 4 applies pressure to the shear-resistant sleeve 6 through the spring washer 5, so that the anti-shearing sleeve 6 is tightly attached to the stepped surface of the stepped hole, and the diameter of the stepped surface in the stepped hole is larger than the outer diameter of the anti-shearing sleeve 6.

The anti-shearing sleeve 6 is sleeved on the outer side of the connecting screw 4, the diameter of the step surface in the step hole is larger than that of the anti-shearing sleeve 6, a moving space is reserved for the anti-shearing sleeve 6, when the cylinder barrel 2 expands, the cylinder barrel 2 drives the connecting screw 4 to translate radially so as to drive the anti-shearing sleeve 6 to perform dislocation relative to the cylinder bottom in the step hole, the situation that the connecting screw 4 is sheared is avoided, and normal use of the ultrahigh pressure cylinder is guaranteed.

Further, the shoulder hole is including being first shoulder hole 3 and the second shoulder hole 8 that distributes from top to bottom, the internal diameter of first shoulder hole 3 is greater than the internal diameter of second shoulder hole 8, and the juncture of first shoulder hole 3 and second shoulder hole 8 forms the ladder face, and the diameter of ladder face equals with the diameter of first shoulder hole 3, it is located first shoulder hole 3 to prevent shearing the cover 6, the internal diameter of second shoulder hole 8 is greater than the diameter of connecting screw 4.

Further, the inner diameter of the anti-shearing sleeve 6 is larger than the diameter of the connecting screw 4 and smaller than the inner diameter of the second stepped hole 8, and the outer diameter of the anti-shearing sleeve 6 is larger than the diameter of the screw head.

Furthermore, an elastic ring 7 is sleeved on the connecting screw 4 below the spring washer 5, the anti-shearing sleeve 6 is sleeved outside the elastic ring 7, and the elastic ring 7 is attached to the connecting screw 4 and the anti-shearing sleeve 6 by elasticity of the elastic ring 7. The height of elastic ring 7 is less than the height of preventing shearing cover 6, and the lateral wall bottom of elastic ring 7 is equipped with the chamfer, is convenient for prevent shearing cover 6 and overlap smoothly on elastic ring 7, and elastic ring 7 can be made for the rubber material, but is not limited to this type of material.

Set up elastic ring 7 between anti-shear sleeve 6 and connecting screw 4, guarantee that anti-shear sleeve 6 and connecting screw 4's central line coincide, avoid when installation anti-shear sleeve 6, lead to and connect screw 4's central line misalignment and influence the use because of anti-shear sleeve 6 skew.

Further, as shown in fig. 3, a plurality of through holes are uniformly distributed on the outer peripheral wall of the elastic ring 7, and the center line of the through hole is perpendicular to the center line of the elastic ring 7. The elastic ring 7 is provided with the through hole, so that the deformation of the elastic ring 7 is facilitated, and the elastic ring is not easy to damage.

Further, the clearance between the anti-shearing sleeve 6 and the first stepped hole 3 is smaller than the clearance between the connecting screw 4 and the second stepped hole 8. Ensure that the connecting screw 4 does not contact the second stepped hole 8 before the anti-shearing sleeve 6 contacts the inner wall of the first stepped hole 3.

The embodiment of the utility model provides a theory of operation as follows: when the hydro-cylinder was worked, because the effect of super high oil pressure, the cylinder 2 can take place the inflation, and the cylinder bottom can not expand this moment, and when cylinder 2 drove the translation of connecting screw 4, connecting screw 4 can drive and prevent that shear sleeve 6 removes in the via hole of cylinder bottom, prevents that shear sleeve 6 and cylinder bottom take place certain radial dislocation promptly to guarantee that connecting screw 4 can not be by the shearing force.

In the description herein, references to the description of the term "one embodiment," "some embodiments," "an example," "a specific example," or "some examples," etc., mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the invention. In this specification, the schematic representations of the terms used above do not necessarily refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.

It will be understood by those skilled in the art that the invention, including any combination of the elements of the above description and the detailed description and illustrated in the accompanying drawings, is not limited to the details and should not be construed as limited to the embodiments set forth herein for the sake of brevity. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Although embodiments of the present invention have been shown and described, it is to be understood that the above embodiments are exemplary and should not be construed as limiting the present invention, and that changes, modifications, substitutions and alterations can be made to the above embodiments by those of ordinary skill in the art without departing from the principles and spirit of the present invention. The scope of the invention is defined by the appended claims and equivalents thereof.

Claims

1. A cylinder bottom structure with a shear screw prevention function is characterized by comprising a cylinder bottom body and a connecting part, the cylinder bottom body is connected with the cylinder barrel through a plurality of connecting parts which are uniformly distributed, a plurality of step holes which are uniformly distributed are arranged on the cylinder bottom body, threaded holes are arranged on the cylinder barrel corresponding to the step holes, the connecting part comprises a connecting screw, a shearing prevention sleeve and a spring washer, the screw head of the connecting screw passes through the stepped hole and is in threaded connection with the threaded hole, so that the cylinder bottom body is connected with the cylinder barrel, the screw cap of the connecting screw is positioned in the stepped hole, the connecting screw is sleeved with the spring washer and the anti-shearing sleeve, and the spring washer is positioned between the screw cap and the anti-shearing sleeve, the screw cap on the connecting screw applies pressure to the anti-shearing sleeve through the spring washer, so that the anti-shearing sleeve is tightly attached to the stepped surface of the stepped hole, and the diameter of the stepped surface in the stepped hole is larger than the outer diameter of the anti-shearing sleeve.

2. The cylinder bottom structure with the shear screw prevention function according to claim 1, wherein the stepped hole comprises a first stepped hole and a second stepped hole which are distributed up and down, the inner diameter of the first stepped hole is larger than that of the second stepped hole, a step surface is formed at the junction of the first stepped hole and the second stepped hole, the shear-preventing sleeve is located in the first stepped hole, and the inner diameter of the second stepped hole is larger than that of the connecting screw.

3. A cylinder bottom structure with shear prevention screws as defined in claim 2, wherein said shear prevention sleeve has an inner diameter larger than the diameter of the attachment screw and smaller than the inner diameter of the second stepped hole, and an outer diameter larger than the diameter of the screw head.

4. The cylinder bottom structure with the shear prevention screw according to claim 1, wherein an elastic ring is sleeved on the connection screw below the spring washer, the shear prevention sleeve is sleeved outside the elastic ring, and the elastic ring is in a fit state with the connection screw and the shear prevention sleeve by using the elasticity of the elastic ring.

5. A cylinder bottom structure with shear screw prevention according to claim 4, characterized in that the peripheral wall of said elastic ring is provided with a plurality of uniformly distributed through holes, and the center line of said through holes is perpendicular to the center line of the elastic ring.

6. A cylinder bottom structure with shear prevention screws as defined in claim 3, wherein the clearance between the shear prevention sleeve and the first stepped hole is smaller than the clearance between the connection screw and the second stepped hole.