CN217873657U - Pin shaft fixing device and engineering machinery - Google Patents

Abstract

The utility model discloses a pin shaft fixing device and engineering machinery, which comprises a pin shaft, an end cover, a pin shaft sleeve, a flange and a standard part; the pin shaft is inserted into the pin shaft sleeve, and two ends of the pin shaft penetrate out of the pin shaft sleeve; the end cover is arranged at one end of the pin shaft, the flange is arranged at the end cover, and an anti-rotation part is arranged between the end cover and the flange to prevent the pin shaft from rotating radially; the flange is fixed together through standard component and round pin axle sleeve, prevents that the round pin axle is axial to leap up and move. The utility model discloses simple structure, performance safe and reliable, the range of application is wide, low cost, the engineering machine tool upper telescope formula of being convenient for round pin axle is fixed to can prolong the life of round pin axle.

Description

Pin shaft fixing device and engineering machinery

Technical Field

The utility model relates to a round pin axle fixing device belongs to the engineering machine tool field.

Background

With continuous mining of large open-pit coal mines, iron ores and copper ores, the engineering machinery is developing towards the trend of large-scale and large-scale development. The large-scale engineering machinery, the form of structure also is more and more complicated simultaneously, therefore, traditional round pin axle fixed mode has not been totally applicable to present structural style yet.

One end of the traditional pin shaft is provided with a flange cover plate, and the flange cover plate is directly connected with the pin shaft sleeve through a bolt. This fixing method has several main disadvantages:

(1) When the vibration is large, the bolt is easy to loosen;

(2) The flange is affected by radial force, is stressed unevenly and is easy to crack;

(3) The flange is welded on the pin shaft, and is not easy to replace when the flange is damaged.

SUMMERY OF THE UTILITY MODEL

The utility model provides a technical problem, overcome the above-mentioned defect of current round pin axle fixing mode, provide a long service life, simple structure is compact, and application scope is wide, round pin axle fixing device that the security performance is high.

The utility model provides a technical scheme that its technical problem adopted is:

the utility model discloses a pin shaft fixing device in the first aspect, which comprises a pin shaft, an end cover, a pin shaft sleeve, a flange and a standard component; the pin shaft is inserted into the pin shaft sleeve, and two ends of the pin shaft penetrate out of the pin shaft sleeve; the end cover is arranged at one end of the pin shaft, the flange is arranged at the end cover, and an anti-rotation part is arranged between the end cover and the flange to prevent the pin shaft from rotating radially; the flange is fixed together with the pin shaft sleeve through the standard part, and the axial leap of the pin shaft is prevented.

In some embodiments, the end cap has a circular hole in the middle, and the outer wall of the circular hole extends outwards to form at least one convex plate; and a boss is arranged at one end of the pin shaft and is matched and fixed with the circular hole.

In some embodiments, the end of the pin shaft and the end of the boss are both provided with chamfers and welded together by adopting an inner and outer circumference fillet welding mode.

In some embodiments, the end cap is provided with two convex plates, and the two convex plates are symmetrically arranged on two sides of the circular hole.

In some embodiments, the flange is provided with a groove on the side in contact with the end cap, the groove and the raised plate cooperate to form an anti-rotation member.

In some embodiments, the flange has a pressure plate secured to a face of the flange remote from the end cap and above the recess.

In some embodiments, the pressure plate is secured to the flange by a standard.

In some embodiments, the shaft surface of the pin shaft sleeve is provided with a threaded hole corresponding to a circle of through holes on the flange; the standard component is a bolt and a gasket, and the bolt penetrates through the gasket and the through hole in sequence and then is screwed in the threaded hole to fix the flange and the pin shaft sleeve together.

In some embodiments, the pin sleeve and the pin are assembled in an interference fit manner.

The utility model discloses engineering machine tool installs foretell round pin axle fixing device in the second aspect.

The utility model discloses beneficial effect:

the utility model discloses simple structure, performance safe and reliable, the range of application is wide, low cost, the engineering machine tool of being convenient for goes up the fixed of telescopic round pin axle to can prolong the life of round pin axle.

Drawings

The accompanying drawings are included to provide a further understanding of the invention, and are incorporated in and constitute a part of this specification, the illustrative embodiments and the description of the invention serve to explain the invention without unduly limiting the invention. It is obvious that the drawings in the following description are only some embodiments, and that for a person skilled in the art, other drawings can be derived from them without inventive effort.

In the drawings:

fig. 1 is a schematic three-dimensional structure diagram of an embodiment of the present invention;

FIG. 2 is an exploded view of the embodiment shown in FIG. 1;

FIG. 3 is a schematic view of a flange structure of the embodiment shown in FIG. 1;

FIG. 4 is a schematic structural view of a pin and end cap weld assembly of the embodiment of FIG. 1;

FIG. 5 is a schematic view of the pin and end cap weld assembly of the embodiment of FIG. 1.

The attached drawings are as follows: 1-pin shaft, 2-end cover, 3-pin shaft sleeve, 4-flange, 5-pressing plate and 6-standard component.

It should be noted that the drawings and the description are not intended to limit the scope of the inventive concept in any way, but to illustrate the inventive concept by those skilled in the art with reference to specific embodiments.

Detailed Description

To make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the drawings in the embodiments of the present invention are combined below to clearly and completely describe the technical solutions in the embodiments, and the following embodiments are used for illustrating the present invention, but do not limit the scope of the present invention.

In the description of the present invention, it should be noted that the terms "upper", "lower", "front", "rear", "left", "right", "vertical", "inner", "outer", and the like indicate orientations or positional relationships based on 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 and operated in a specific orientation, and thus, should not be construed as limiting the present invention.

In the description of the present invention, it is to be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; may be directly connected or indirectly connected through an intermediate. The specific meaning of the above terms in the present invention can be understood as a specific case by those skilled in the art.

As shown in fig. 1, 2, 3, 4 and 5, the pin fixing device comprises a pin 1, an end cover 2, a pin sleeve 3, a flange 4, a pressure plate 5 and a standard part 6 (including bolts and gaskets). The pin shaft 1 is inserted into the pin shaft sleeve 3, and two ends of the pin shaft 1 penetrate out of the pin shaft sleeve 3; the end cover 2 is arranged at one end of the pin shaft 1, the flange 4 is arranged at the end cover 2, and an anti-rotation part is arranged between the end cover and the flange to prevent the pin shaft 1 from rotating radially; the flange 4 is fixed together with the pin sleeve 3 by a standard 6, preventing the pin 1 from axially bouncing.

A preferred embodiment of the above embodiment is given below with respect to the end cap and flange:

with continued reference to fig. 1, 2, 3, 4, and 5, a circular hole is formed in the middle of the end cap 2, and the outer wall of the circular hole extends outward to form at least one convex plate; one end of the pin shaft 1 is provided with a boss which is matched and fixed with the circular hole.

Further scheme: the end part of the pin shaft 1 and the end part of the lug boss are both provided with chamfers and are welded together by adopting a welding mode of fillet welding of the inner circumference and the outer circumference.

The preferable scheme is as follows: the end cover 2 is provided with two convex plates which are symmetrically arranged on two sides of the circular hole. Of course, three or four can be provided, and corresponding adjustment can be made according to actual requirements.

Further scheme: the flange 4 is provided with a groove on the surface contacting with the end cover 2, and the groove and the convex plate are matched to form an anti-rotation part, so that the radial rotation of the pin shaft can be effectively prevented.

As the utility model discloses an optimization scheme: the flange 4 is fixed with the clamp plate 5 on the face of keeping away from end cover 2 and above the recess, plays the effect of reinforcement and protection. The pressure plate 5 is fixed to the flange 4 by standard members 6, including bolts and spacers.

A preferred embodiment of the above embodiments is given below with respect to the pin sleeve and the pin:

with continued reference to fig. 1, 2, 3, 4, and 5, the axial surface of the pin bush 3 is provided with a threaded hole corresponding to a circle of through-hole on the flange 4; the standard component 6 is a bolt and a gasket, the bolt sequentially penetrates through the gasket and the through hole and then is screwed in the threaded hole to fix the flange 4 and the pin shaft sleeve 3 together, and the axial displacement of the pin shaft 1 can be effectively prevented.

Further scheme: the pin shaft sleeve 3 and the pin shaft 1 are assembled in an interference fit mode, and the roughness of the pin shaft at the interference fit part is larger.

The assembly process is as follows: referring to fig. 1, 2, 3, 4 and 5, the pin shaft sleeve 3 and the pin shaft 1 are in medium interference fit, and the roughness of the pin shaft at the interference fit part is large. The end part of the pin shaft and the end part of the boss are provided with chamfers and welded together by adopting a welding mode of fillet welding of the inner circumference and the outer circumference.

Furthermore, the flange 4 has two grooves which are matched with two ears of the end cover.

Further, the pin shaft sleeve 3 is provided with a threaded hole, and the flange 4 and the pin shaft sleeve 3 are fixed together through a standard part 6 (comprising bolts and gaskets).

Finally, the pressure plate 5 is fixed on the two grooves of the flange 4 through standard parts 6 (including bolts and gaskets) to play a role in reinforcement and protection.

The utility model discloses simple structure, performance safe and reliable, the range of application is wide, low cost, the last fixed of round pin axle of engineering machine tool of being convenient for.

In the description provided herein, numerous specific details are set forth. It is understood, however, that embodiments of the invention may be practiced without these specific details. In some instances, well-known methods, structures and techniques have not been shown in detail in order not to obscure an understanding of this description.

Furthermore, those skilled in the art will appreciate that although some embodiments described herein include some features included in other embodiments, not others, combinations of features of different embodiments are also meant to be within the scope of the invention and form different embodiments. For example, in the above embodiments, those skilled in the art can use the combination according to the known technical solutions and technical problems to be solved by the present application.

The above description is only a preferred embodiment of the present invention, and is not intended to limit the present invention in any way, and although the present invention has been disclosed with reference to the preferred embodiment, it is not intended to limit the present invention, and any person skilled in the art can make some changes or modifications to equivalent embodiments without departing from the scope of the present invention, and any simple modification, equivalent change and modification made to the above embodiments according to the technical essence of the present invention will still fall within the scope of the present invention.

Claims (10)

1. The utility model provides a round pin axle fixing device which characterized in that:

the device comprises a pin shaft, an end cover, a pin shaft sleeve, a flange and a standard part;

the pin shaft is inserted into the pin shaft sleeve, and two ends of the pin shaft penetrate out of the pin shaft sleeve;

the end cover is arranged at one end of the pin shaft, the flange is arranged at the end cover, and an anti-rotation part is arranged between the end cover and the flange to prevent the pin shaft from rotating radially;

the flange is fixed together with the pin shaft sleeve through the standard part, and the axial leap of the pin shaft is prevented.

2. The pin fixing device according to claim 1, wherein:

a circular hole is formed in the middle of the end cover, and the outer wall of the circular hole extends outwards to form at least one convex plate;

and a boss is arranged at one end of the pin shaft and is matched and fixed with the circular hole.

3. A pin holding apparatus as claimed in claim 2, wherein:

the end part of the pin shaft and the end part of the lug boss are both provided with chamfers and are welded together in an inner and outer circumference fillet welding mode.

4. A pin securing device according to claim 2, wherein:

the end cover is provided with two convex plates which are symmetrically arranged on two sides of the circular hole.

5. A pin holding apparatus as claimed in claim 2, wherein:

the flange is provided with a groove on the surface contacting with the end cover, and the groove and the convex plate are matched to form an anti-rotation part.

6. A pin holding device according to claim 5, wherein:

and a pressing plate is fixed on the surface of the flange far away from the end cover and above the groove.

7. The pin fixing device according to claim 6, wherein:

the pressure plate is fixed on the flange through a standard component.

8. The pin fixing device according to claim 1, wherein:

the shaft surface of the pin shaft sleeve is provided with a threaded hole corresponding to a circle of through holes on the flange;

the standard component is a bolt and a gasket, and the bolt penetrates through the gasket and the through hole in sequence and then is screwed in the threaded hole to fix the flange and the pin shaft sleeve together.

9. The pin fixing device according to claim 1, wherein:

the pin shaft sleeve and the pin shaft are assembled in an interference fit mode.

10. A construction machine, characterized in that:

fitted with a pin holder as claimed in any one of claims 1 to 9.

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