Anti-rotation hoisting bush structure

Abstract

The utility model belongs to the technical field of mechanical structure design, and relates to an anti-rotation hoisting bush structure which comprises a hoisting bush, a nut and a cabin body, stepped holes are formed in the cabin body, a rectangular groove, a kidney-shaped hole and a round hole are sequentially formed in the cabin body from inside to outside, and the rectangular groove in the inner side is used for installing a shaft shoulder of the hoisting bush so as to bear loads in the hoisting direction; the middle waist-shaped hole is matched with the waist-shaped surface of the hoisting bushing so as to prevent the bushing from rotating along with the screw rod when the hoisting screw rod is tightened in the bushing; the outer side round hole is used for installing a locking nut, and it is ensured that the lining can be fixed to the cabin body. The requirement for the number of hoisting times in the whole life cycle of equipment can be met, the hoisting safety margin can be remarkably improved, the kidney-shaped matching face is designed, the phenomenon that a hoisting screw is not tightly locked in the lining can be avoided, and guarantee is added for safe hoisting.

Description

TECHNICAL FIELD

[0001] The utility model belongs to mechanical structure design technical field relates to a kind of anti-rotation hoisting bush design, especially a kind of high reliability hoisting bush design for aircraft and other products. BACKGROUND

[0002] Hoisting transportation belongs to the most common operation of various mechanical equipment, whether whole machine hoisting or some size, weight larger parts must be designed lifting point, it is widely used in mechanical equipment production assembly and later maintenance guarantee, so there are strict requirements to the reliability and service life of lifting point. In recent years, various mechanical equipment are pursuing lightweight design, especially automobile, aircraft, rocket are largely used light material, such as aluminum alloy, magnesium alloy, carbon fiber, although it can achieve lightweight design to a large extent, but because light material is generally low hardness, directly set thread lifting hole on the body, because the strength of screw is low, cannot satisfy the service life requirement of hundreds of times, and hoisting safety margin is low, present based on this design a kind of high reliability hoisting bush, can satisfy the hoisting times requirement of whole life cycle, and according to the use characteristics of bush, design has anti-rotation stop surface, can realize that hoisting screw can be locked in hoisting bush, prevent hoisting bush from rotating synchronously in the process of screw tightening, further improve hoisting reliability. CONTENT OF UTILITY MODEL

[0003] The utility model aims at equipment design a kind of steel bush, inlay in the cabin section of relatively soft body of aluminum alloy, magnesium alloy, carbon fiber etc., can improve the connection strength and bearing capacity of lifting position by using inlay bush mode, completely solve the disadvantage of thread galling in multiple use, reach the hoisting times requirement in whole life cycle. Meanwhile, the bush is designed with waist-shaped surface, waist-shaped hole is set on cabin body, through the cooperation of waist-shaped surface and waist-shaped hole, the problem that bush rotates with screw in the process of screw being screwed into bush hole and tightened, leading to screw cannot be tightened in place can be solved, the utility model eliminates the security risk existing in traditional hoisting bush.

[0004] Technical scheme: a kind of anti-rotation high reliability hoisting bush structure, including hoisting bush, nut, cabin, cabin is set with ladder hole, from inside to outside in turn rectangular groove, waist-shaped hole, circular hole, inside rectangular groove is used to install the shaft shoulder of hoisting bush, can bear the load in hoisting direction;Middle waist-shaped hole cooperates with hoisting bush waist-shaped surface, can prevent hoisting screw from rotating with bush in the tightening stage of bush in bush, play anti-rotation stop effect;Outside circular hole is used to install locking nut, ensure that bush can be fixed on cabin.

[0005] Further, hoisting bush is made of alloy steel material, which is installed in the hoisting bush mounting hole of cabin from inside to outside, and is fixed on cabin by light spring washer and locking nut.

[0006] Further, the hoisting bush bottom shaft shoulder cooperates with the rectangular sink of the cabin body, and bears the whole machine hoisting weight through the fitting plane; the middle waist-shaped surface of the hoisting bush cooperates with the waist-shaped hole of the cabin body, so that the bush is clamped in the waist-shaped hole of the cabin body through the waist-shaped surface, the anti-rotation function is realized, the upper threaded surface of the hoisting bush is screwed with the locking nut, and the fixing of the hoisting bush and the cabin body is realized.

[0007] Further, the light spring washer is arranged between the hoisting bush and the locking nut, so that the hoisting bush is prevented from falling into the cabin body due to loosening of the locking nut during transportation.

[0008] Further, the locking nut is made of alloy steel and is internally provided with threads and an upper one-slot groove, so that the one-slot screwdriver is used for tightening.

[0009] Further, the cabin body is made of light materials such as aluminum alloy, magnesium alloy and carbon fiber.

[0010] Technical effects: the anti-rotation high-reliability hoisting bush can realize the hoisting frequency requirement in the whole life cycle of equipment, can significantly improve the hoisting safety margin, and is provided with the waist-shaped cooperation surface, so that the phenomenon that the hoisting screw rod is not locked tightly in the bush is avoided, and the safety hoisting is increased. DETAILED DESCRIPTION

[0011] Fig. 1 is a three-dimensional model diagram of a prototype in the utility model;

[0012] Fig. 2 is an exploded view of the prototype in the utility model;

[0013] Fig. 3 is an exploded view of the prototype (cabin body section) in the utility model;

[0014] Fig. 4 is a schematic view of a hoisting bush mounting hole provided on the cabin body in the utility model;

[0015] Fig. 5 is a schematic view of various features of the hoisting bush mounting hole provided on the cabin body in the utility model;

[0016] Fig. 6 is a three-dimensional model of the hoisting bush and a schematic view of various features thereof in the utility model;

[0017] Fig. 7 is a three-dimensional model of the locking nut in the utility model;

[0018] In the figure, 1-cabin body, 2-lifting bushing, 3-light spring washer, 4-locking nut, 11-lifting bushing mounting hole, 111-rectangular sink, 112-waist-shaped hole, 113-circular hole, 21-shaft shoulder, 22-waist-shaped surface, 23-threaded surface, 24-limiting boss, 25-threaded hole. DETAILED DESCRIPTION

[0019] In order to more clearly illustrate the technical scheme of the embodiments of the utility model, the utility model is described in detail below in combination with the drawings or specific implementation cases. It should be noted that some (but not all) of the disclosed examples are shown in the drawings. In fact, many different examples can be described and these examples should not be understood as being limited to the examples set forth herein. On the contrary, these examples are described so that the positive effects of the utility model are more embodied, and the details not described herein are regarded as known or conventional technical means in the art.

[0020] Referring to the drawings Figs. 1-7 In the specific implementation process of the utility model, a high-reliability anti-rotation lifting bushing structure is proposed, which comprises a cabin body 1, a lifting bushing 2, a light spring washer 3, and a locking nut 4. The cabin body 1 has a large volume / weight ratio to the whole machine, and is generally made of light materials such as aluminum alloy, magnesium alloy, and carbon fiber, so the lightweight effect is obvious.

[0021] In the implementation case, the cabin body 1 is provided with a lifting bushing mounting hole 11 at the end for lifting the cabin body itself or the whole machine; the bottom of the lifting bushing mounting hole 11 is a rectangular sink 111, the middle is a waist-shaped hole 112, and the top is a circular hole 113; the lifting bushing 2 is made of alloy steel material and is installed in the lifting bushing mounting hole 11 of the cabin body 1 from inside to outside, and is fixed on the cabin body 1 through the light spring washer 3 and the locking nut 4.

[0022] The most critical design in the implementation process is that the bottom shaft shoulder 21 of the lifting bushing 2 cooperates with the rectangular sink 111 of the cabin body to bear the weight of the whole machine through the fitting plane; the middle waist-shaped surface 22 of the lifting bushing 2 cooperates with the waist-shaped hole 112 of the cabin body to ensure that the bushing 2 is clamped in the waist-shaped hole 112 of the cabin body 1 through the waist-shaped surface, so that the anti-rotation function can be realized, and the lifting bushing 2 is prevented from rotating during the tightening process of the lifting ring screw rod in the lifting bushing 2, so that the lifting ring cannot be tightened; the upper threaded surface 23 of the lifting bushing 2 is screwed with the locking nut 4, so that the fixing of the lifting bushing 2 and the cabin body 1 can be realized; the light spring washer 3 is sleeved outside the limiting boss 24 to prevent the lifting bushing 2 from loosening and falling into the cabin body 1; the threaded hole 25 is screwed and tightened with the screw rod part of the lifting ring, so that the safe lifting of the whole machine can be realized.

[0023] In the specific embodiment, the light spring washer 3 is selected as a standard part, which can play a thread locking effect; the lock nut 4 is made of alloy steel and is internally provided with a thread and an upper one-slot, which is convenient for being tightened by a one-slot screwdriver.

[0024] The above specific embodiments or cases are only used to explain the technical solutions of the present application, and are not intended to limit the present application. The parts not described in detail are regarded as conventional technical means or common knowledge in the art. It can be understood by those skilled in the art that: based on the design idea of the present application, the technical solutions recorded in the foregoing embodiments can be modified adaptively, or some or all of the technical features can be replaced equivalently. These modified, equivalent, adaptive improved technical solutions do not deviate from the technical essence of the present application, and should be covered within the protection scope of the present application.

Claims

1. A self-rotation preventing hoisting bush structure, characterized by, The lifting bushing, the nut and the cabin body are included, the cabin body is provided with a stepped hole, and the stepped hole is sequentially provided with a rectangular groove, a waist-shaped hole and a circular hole from inside to outside.

2. A self-rotation preventing hoisting bush structure according to claim 1, characterized in that, The lifting bushing is made of alloy steel, is installed in the lifting bushing installation hole of the cabin body from inside to outside, and is fixed on the cabin body through a light spring washer and a locking nut.

3. A self-rotation preventing hoisting bush structure according to claim 1, characterized in that, The bottom shaft shoulder of the lifting bushing is matched with the rectangular groove of the cabin body, bears the whole machine lifting weight through the fitting plane, the middle waist-shaped surface of the lifting bushing is matched with the waist-shaped hole of the cabin body, the lifting bushing is clamped in the waist-shaped hole of the cabin body through the waist-shaped surface, the anti-rotation function is realized, the upper threaded surface of the lifting bushing is screwed with the locking nut, and the fixing of the lifting bushing and the cabin body is realized.

4. A self-rotation preventing hoisting bush structure according to claim 1, characterized in that, The light spring washer is arranged between the lifting bushing and the locking nut, so that the lifting bushing and the locking nut are prevented from loosening during transportation, and the bushing is prevented from falling into the cabin body.

5. A self-rotation preventing hoisting bush structure according to claim 4, wherein The locking nut is made of alloy steel and is machined, is internally provided with a thread, and is provided with a one-dot groove on the upper portion.

6. A self-rotation preventing hoisting bush structure according to claim 1, wherein The cabin body is made of aluminum alloy, magnesium alloy and carbon fiber light material.

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