CN214036428U

CN214036428U - Novel quick fixed knot of slender rod spare constructs

Info

Publication number: CN214036428U
Application number: CN202021138075.3U
Authority: CN
Inventors: 莫天生
Original assignee: Anhui Changjiang Steel Co Ltd
Current assignee: Anhui Changjiang Steel Co Ltd
Priority date: 2020-06-18
Filing date: 2020-06-18
Publication date: 2021-08-24
Anticipated expiration: 2030-06-18

Abstract

The utility model belongs to the field of fixing slender rod pieces, and discloses a novel slender rod piece quick fixing structure, which comprises an inner nesting sleeve and a fixing sleeve, wherein the inner nesting sleeve is assembled in the fixing sleeve, and the middle part of the inner nesting sleeve is provided with a central hole for fixing the slender rod piece; the inner nest comprises a double-curved surface part which is matched with the fixed sleeve; the hyperbolic surface part is formed by a contour line which winds around an axis nested in the hyperbolic surface part for one circle, wherein the contour line is obtained by partially intercepting a hyperbola in a first quadrant or a second quadrant in a Cartesian rectangular coordinate; the utility model discloses slender rod piece is connected through the cooperation of interior nested and fixed cover seat and can realize fixing slender rod piece on the mechanical parts of any needs, satisfies the required function, realizes quick replacement, and difficult wearing and tearing damage reduces the down time and the spare parts consumption in the production, reduction in production cost.

Description

Novel quick fixed knot of slender rod spare constructs

Technical Field

The utility model belongs to slender rod piece field of fixing, concretely relates to novel slender rod piece quick fixation structure.

Background

The existing method mainly adopts a common thread form or an embedded structure with lower positioning and contact surface matching precision aiming at the fixation of a slender rod piece, and in the actual use, the following defects are found: the biggest defect of the fixed connection in the form of the thread is that the machine is shut down and replaced for a long time after the machine breaks down in production and use; the direct nested structure has low contact surface precision, and when the slender rod piece executes functional action, the action stroke track and point position control precision are insufficient, and the like.

SUMMERY OF THE UTILITY MODEL

The utility model aims to provide a novel slender rod piece quick fixation structure, solved the problem that the background art provided to the not enough of prior art.

The purpose of the utility model can be realized by the following technical scheme:

a novel quick fixing structure for a slender rod piece comprises an inner nesting sleeve and a fixing sleeve, wherein the inner nesting sleeve is assembled in the fixing sleeve, and the middle part of the inner nesting sleeve is provided with a central hole for fixing the slender rod piece;

the inner nest comprises a double-curved surface part which is matched with the fixed sleeve;

the hyperbolic surface part takes any section curve passing through the circle center as the same mathematical equation

The hyperbola of (a) and (b) are both constants, are positioned at the left and right branches of the first two quadrants in a Cartesian rectangular coordinate and are formed by hyperbola turns in the area where y is more than 0.

Further, clearance fit, excessive fit or interference fit is formed between the slender rod piece and the central hole.

Furthermore, the fixed sleeve seat is fixed at the installation position in a welding or detachable flange bolt connection mode.

The utility model has the advantages that:

the utility model discloses slender rod piece is connected through the cooperation of interior nested and fixed cover seat and can realize fixing slender rod piece on the mechanical parts of any needs, satisfies the required function, realizes quick replacement, and difficult wearing and tearing damage reduces the down time and the spare parts consumption in the production, reduction in production cost.

Drawings

In order to more clearly illustrate the embodiments of the present invention 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, and it is obvious for those skilled in the art that other drawings can be obtained according to the drawings without creative efforts.

Fig. 1 is a schematic overall structure diagram of an embodiment of the present invention;

fig. 2 is a schematic view of the fixing sleeve structure according to the embodiment of the present invention;

fig. 3 is a hyperbolic schematic diagram of an embodiment of the invention;

fig. 4 is a schematic hyperbolic diagram of a region where y > 0 according to an embodiment of the present invention.

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 of the present invention, all other embodiments obtained by a person of ordinary skill in the art without creative efforts belong to the protection scope of the present invention.

As shown in fig. 1 to 2, a novel structure for rapidly fixing a slender rod comprises an inner nest 1 and a fixed sleeve 2, wherein the inner nest 1 is assembled in the fixed sleeve 2, and a central hole 10 for fixing the slender rod is formed in the middle of the inner nest 1;

the inner nest 1 comprises a hyperbolic surface part 11 which is matched with the fixed sleeve 2, and in the embodiment, when the inner nest 1 is integrally assembled in the fixed sleeve 2, the hyperbolic surface part 11 is the outer surface of the inner nest 1; in other embodiments, the inner sleeve 1 is partially assembled in the fixing sleeve 2, i.e. the double curved surface 11 is the part assembled between the outer surface of the inner sleeve 1 and the fixing sleeve 2.

As shown in FIGS. 3 and 4, the hyperbolic surface portion 11 is the same mathematical equation from any section curve passing through the center of the circle

Wherein a and b are both constants, (fig. 4) are located in the left and right branches of the first two quadrants of the cartesian rectangular coordinates, as shown in fig. 4, and are formed by the rotation of a hyperbola in the area y > 0;

if the hyperbolic curve asymptote of the hyperbolic curve surface part 11 is rotated to form a conical surface, the contact stress of the hyperbolic curve surface part 11 is larger than that of the conical surface used in the prior art, the stress uniformity is better, and the combination precision between the surfaces is higher; in addition, the hyperbolic surface part 11 is a continuous convexity smooth transition curved surface and has a function of dispersing the force of the convexity curved surface, and the hyperbolic surface part 11 has unequal curvature changes from the X axis direction, so that the uniform stress density of each part is different under the condition that the external load is not changed. The slender rod piece is generally vertically arranged and is influenced by self gravity, and is mainly stressed downwards to generate a certain horizontal component force on the double-curved surface part 11. Therefore, after the two components are assembled, because the lower curvature of the contact surface is smaller, the stress direction is mainly vertical downwards, the horizontal component force is smaller, the components are fixed stably and are not easy to deform or misplace; along with the increase of the curvature of the upward curved surface, the horizontal component force is gradually larger, the contact area is gradually enlarged, the slender rod piece is very firmly fixed in the horizontal direction under the action of the horizontal component force, and the contact stress between the surfaces is reduced due to the enlargement of the contact surface, so that the contact stress between the surfaces is dispersed and smaller while the slender rod piece is stably fixed, and the probability of surface deformation of the part is reduced. The hyperboloid is adopted as a contact stress surface from a stress angle, and the stress dispersion is uniform and reasonable compared with the contact of conical surfaces, cylindrical surfaces and other shapes, the mounting and dismounting process is convenient and free of blocking, the surface contact quality is high, the deformation is not easy to occur, and the like, and the requirements of quick replacement and accurate functional positioning in production can be well met.

When in use, the slender rod piece is inserted into the central hole 10 of the inner nest 1, wherein the slender rod piece and the central hole 10 can adopt a plurality of flexible matching connection modes such as clearance fit, excessive fit, interference fit or fixation and the like;

the fixed sleeve 2 seat can be fixed at a required position by adopting a welding or detachable flange bolt connection mode according to functional requirements.

The working principle is as follows:

the slender rod piece can be fixed on any required mechanical part through the matching connection of the inner nest 1 and the fixed sleeve 2 seat, the required functions are met, the slender rod piece is fast replaced, the slender rod piece is not easy to wear and damage, the downtime and spare part consumption in production are reduced, and the production cost is reduced.

In the description herein, references to the description of "one embodiment," "an example," "a specific example," 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.

The foregoing shows and describes the general principles, essential features, and advantages of the invention. It will be understood by those skilled in the art that the present invention is not limited to the above embodiments, and that the foregoing embodiments and descriptions are provided only to illustrate the principles of the present invention without departing from the spirit and scope of the present invention.

Claims

1. A novel slender rod piece quick fixing structure comprises an inner nest (1) and a fixing sleeve (2), and is characterized in that the inner nest (1) is assembled in the fixing sleeve (2), and the middle part of the inner nest (1) is provided with a central hole (10) for fixing the slender rod piece;

the inner nesting sleeve (1) comprises a hyperbolic surface part (11) which is matched with the fixed sleeve (2);

the hyperbolic surface part (11) adopts the same mathematical equation from any section curve passing through the circle center

2. The novel quick fastening structure for elongated rods according to claim 1, characterized in that the elongated rod is in clearance fit, over fit or interference fit with the central hole (10).

3. The new quick fastening structure for elongated rod according to claim 1, characterized in that the fastening sleeve (2) seat is fixed in the mounting position by welding or dismantling flange bolt connection.