Coupling anti-movement structure

Abstract

The utility model discloses an anti-shifting structure of a coupler, which comprises an inner gear ring, an outer gear shaft sleeve, a nut, a pressing plate, a long bolt and a gland, wherein the inner gear ring and the outer gear shaft sleeve are connected through meshing of inner teeth and outer teeth; the gland sleeves the outer side of the outer gear shaft sleeve, and is fixedly connected to the end face of the inner gear ring through a plurality of long bolts uniformly arranged along the circumference and nuts arranged in the middles of the long bolts in a matched manner; the size of the upper connecting hole is between the outer diameter of a long bolt screw and the size of the outer side of the head of the long bolt and the size of the outer side of a nut, the pressing plate sleeves the outer side of the long bolt screw through the upper connecting hole, and the bottom of the pressing plate is detachably connected with the outer tooth shaft sleeve; the distances h1 and h2 from the two sides of the pressing plate to the nut and the head of the long bolt are both smaller than the distance H from the gland to the outer tooth end of the outer tooth shaft sleeve. According to the anti-shifting structure of the coupler, the axial shifting amount of the inner gear ring is adjusted through the pressing plate, the requirement for small-angle displacement of the tooth part can be met, the gland is prevented from colliding with the outer teeth, and the overall service life of the coupler is greatly prolonged.

Description

TECHNICAL FIELD

[0001] The utility model belongs to the coupling technical field, concretely relates to a coupling anti -runout structure, is applicable to the sheet strip hot rolling finishing mill group motor coupling and main coupling. BACKGROUND

[0002] The sheet strip hot rolling technology and other modern metallurgical production advanced technology need large, efficient, high-precision rolling equipment, also put forward new challenges to the related spare parts industry.For the sheet strip hot rolling finishing mill group, since the motor coupling and main coupling are the key transmission components of the whole continuous rolling equipment, their performance and quality are directly related to the yield and quality of the sheet strip product, and their technical requirements are higher and higher.

[0003] The motor coupling and main coupling of the existing sheet strip hot rolling finishing mill group are used, since the machining precision and installation precision of part of the equipment do not reach the requirement, the inner tooth ring together with the gland produces axial runout, the teeth of the gland and the outer tooth shaft sleeve collide, thereby generating tooth abnormal sound and bolt loosening and fracture problems, which greatly reduces the service life of the coupling. UTILITY MODEL CONTENTS

[0004] In view of the defects in the background art, the utility model provides a coupling anti -runout structure, the axial runout of the inner tooth ring is adjusted through the pressing plate, a small amount of angular displacement of the teeth is satisfied, the collision of the gland and the outer tooth is avoided, and the overall service life of the coupling is greatly prolonged.

[0005] The technical scheme for solving the technical problems of the utility model is as follows:

[0006] According to one aspect of the present application, a coupling anti -runout structure is provided, which comprises an inner tooth ring and an outer tooth shaft sleeve connected through inner and outer tooth engagement, and further comprises a nut, a pressing plate, a long bolt and a gland; the gland is sleeved on the outer side of the outer tooth shaft sleeve, the gland is fastened and connected to the end face of the inner tooth ring through the long bolt arranged along the circumference and the nut arranged in the middle part of the long bolt; the upper part of the pressing plate is provided with an upper connecting hole with a size between the outer diameter of the long bolt screw rod and the size of the outer side of the long bolt head and the size of the outer side of the nut, the pressing plate is sleeved on the outer side of the screw rod of the long bolt through the upper connecting hole, and the bottom thereof is detachably connected to the outer side of the outer tooth shaft sleeve; the distance h1 and h2 from the both sides of the pressing plate to the nut and the long bolt head are both less than the distance H from the outer tooth end part of the outer tooth shaft sleeve to the gland.

[0007] As a further improvement of the technical scheme, the bottom of the pressing plate is detachably connected to the outer side of the outer tooth shaft sleeve through a screw.

[0008] As a further improvement of the technical scheme, the pressing plate is in L-shaped structure, the bottom is a bottom arc surface matched with the outer side of the outer toothed shaft sleeve, the upper connecting hole is arranged on the upper part, and the bottom connecting hole is arranged on the bottom and detachably connected with the outer side of the outer toothed shaft sleeve through the screw.

[0009] As a further improvement of the technical scheme, the bottom connecting hole is provided with at least two.

[0010] As a further improvement of the technical scheme, the gasket is arranged on the long bolt between the nut and the pressing cover.

[0011] As a further improvement of the technical scheme, the sealing ring is arranged between the pressing cover and the outer side of the outer toothed shaft sleeve.

[0012] As a further improvement of the technical scheme, the pressing plate is provided with at least two along the circumference.

[0013] Compared with the prior art, the anti-axial movement structure of the coupling provided by the utility model has the advantages of novel, reasonable and simple design, can be installed by using the original screw hole on the pressing cover, can limit the axial movement of the inner gear ring of the coupling by adjusting the distance between the head of the long bolt, the pressing plate and the pressing cover, can avoid the collision between the outer gear of the outer toothed shaft sleeve and the pressing cover, can eliminate the problems of abnormal sound and bolt fracture caused by the collision, can ensure a small angle displacement, and greatly improves the overall service life of the coupling. BRIEF DESCRIPTION OF DRAWINGS

[0014] Figure 1 It is a structural schematic view of the utility model on the coupling;

[0015] Figure 2 It is a structural schematic view of the utility model on the coupling; Figure 1 It is an enlarged schematic view of I in the figure;

[0016] Figures 3-5 They are respectively the front view, side view and top view of the pressing plate in the utility model;

[0017] In the figure: 1, gasket; 2, nut; 3, pressing plate; 31, upper connecting hole; 32, bottom connecting hole; 33, bottom arc surface; 4, long bolt; 5, screw; 6, pressing cover; 7, outer toothed shaft sleeve; 8, inner gear ring; 9, coupling. DETAILED DESCRIPTION

[0018] The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments of the present application, all other embodiments obtained by those skilled in the art without creative efforts belong to the scope of the present application. Unless otherwise defined, the technical terms or scientific terms used herein should be understood as the common meanings by those skilled in the art to which the present application belongs. The "upper", "lower", "left", "right", "front", "back", "inner" and "outer" used in the patent application description and claims of the present application are only used to represent the relative positional relationship, and when the absolute position of the described object is changed, the relative positional relationship is also changed accordingly. The details not described in the present application are the known technology of those skilled in the art.

[0019] As shown in Figures 1-5 The present application provides a coupling anti-movement structure. The coupling 9 comprises an inner gear ring 8, and the inner side of the inner gear ring 8 is connected with an outer tooth shaft sleeve 7 through inner and outer tooth engagement. The improvement of the present application is that the coupling anti-movement structure comprises a nut 2, a pressing plate 3, a long bolt 4 and a gland 6. The gland 6 is sleeved on the outer side of the outer tooth shaft sleeve 7, and the gland 6 is fastened and connected to the end face of the inner gear ring 8 through a plurality of long bolts 4 arranged along the circumference and cooperating with the nut 2. Each nut 2 is threadedly connected to the middle part of the screw rod of the long bolt 4, and the position is also adjusted. The upper part of the pressing plate 3 is provided with an upper connecting hole 31 with a size between the outer diameter of the screw rod of the long bolt 4, the size of the head part of the long bolt 4 on the outer side and the size of the nut 2 on the outer side. The pressing plate 3 is sleeved on the outer side of the screw rod of the long bolt 4 through the upper connecting hole 31, and the bottom part is detachably connected to the outer side of the outer tooth shaft sleeve 7. The distance h1 and h2 from the two sides of the pressing plate 3 to the nut 2 and the head part of the long bolt 4 are both less than the distance H from the gland 6 to the outer tooth end part of the outer tooth shaft sleeve 7. In the embodiment, the upper part of the pressing plate 3 can be axially limited through the head part of the nut 2 and the long bolt 4, so that the collision between the outer tooth end part of the outer tooth shaft sleeve 7 and the gland 6 can be avoided. At the same time, through the setting of the upper connecting hole 31, the small angle displacement of the tooth part can be met, so that the overall service life of the coupling can be effectively improved.

[0020] As a further preferred embodiment, the bottom part of the pressing plate 3 is detachably connected to the outer side of the outer tooth shaft sleeve 7 through a screw 5. As a further embodiment, the pressing plate 3 is in an L-shaped structure, the bottom part of which is a bottom arc surface 33 matched with the outer side of the outer tooth shaft sleeve 7, and the upper connecting hole 31 is arranged on the upper part thereof. The bottom part is provided with a bottom connecting hole 32 and is detachably connected to the outer side of the outer tooth shaft sleeve 7 through the screw 5. The bottom connecting hole 32 is provided with at least two, which can effectively fix the pressing plate 3. Further, the pressing plate 3 is provided with at least two along the circumference, preferably 2-4, which is convenient for disassembly and assembly.

[0021] As a further preferred embodiment, the gasket 1 is arranged on the long bolt 4 between the nut 2 and the gland 6, so that the nut 2 has a better fastening effect on the gland 6.

[0022] As a further preferred embodiment, the gland 6 is provided with a sealing ring on the outside of the outer toothed shaft sleeve 7, which improves the sealing performance of the shaft coupling.

Claims

1. A shaft coupling anti-creep structure comprising an inner ring (8) and an outer ring (7) connected by inner and outer tooth engagement, characterized in that, Also include nut (2), pressing plate (3), long bolt (4) and gland (6); The gland (6) is set outside the outer tooth shaft sleeve (7), the gland (6) is fastened and connected to the end face of the inner tooth ring (8) by the long bolt (4) that multiple are set along the circumference and cooperate in the middle part of the long bolt (4) setting the nut (2); The upper part of the pressing plate (3) is provided with upper connecting hole (31) between the size of the long bolt (4) screw rod outer diameter and the long bolt (4) head outside size and the nut (2) outside size, the pressing plate (3) is set outside the long bolt (4) screw rod by the upper connecting hole (31), and the bottom is detachably connected with the outside of the outer tooth shaft sleeve (7); The distance h1 and h2 of the pressing plate (3) two sides to the nut (2) and the long bolt (4) head are less than the distance H of the gland (6) to the outer tooth end of the outer tooth shaft sleeve (7).

2. The anti-creep structure of a coupling according to claim 1, wherein The bottom of the pressing plate (3) is detachably connected with the outside of the outer tooth shaft sleeve (7) by screw (5).

3. The anti-rotation structure of a coupling according to claim 2, wherein The pressing plate (3) is L-shaped structure, the bottom is bottom arc surface (33) matched with the outside of the outer tooth shaft sleeve (7), the upper connecting hole (31) is arranged on the upper part, and the bottom connecting hole (32) is arranged on the bottom and detachably connected with the outside of the outer tooth shaft sleeve (7) by screw (5).

4. The anti-rotation structure of a coupling according to claim 3, wherein The bottom connecting hole (32) is provided with at least two.

5. The anti-rotation structure of a coupling according to claim 1, wherein The long bolt (4) between the nut (2) and the gland (6) is provided with a gasket (1).

6. The anti-rotation structure of a coupling according to claim 1, wherein The gland (6) and the outside of the outer tooth shaft sleeve (7) are provided with a sealing ring.

7. A shaft coupling anti-creep structure according to any one of claims 1 to 6, wherein The pressing plate (3) is provided with at least two along the circumference.

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