CN219795893U - Novel expansion sleeve coupler - Google Patents

Abstract

The utility model provides a novel expansion sleeve coupler, which belongs to the field of mechanical transmission and comprises the following components: an input outer lock sleeve having an input outer lock hole; the input inner taper sleeve is provided with an input inner lock hole, an input avoidance hole and an input countersunk hole; the input fastener is locked in the input inner lock hole from the input outer lock hole; an output outer lock sleeve having an output outer lock hole; the output inner taper sleeve is provided with an output inner lock hole, an output avoidance hole and an output countersunk hole; the output fastener is locked in the output inner lock hole from the output outer lock hole; the lamination assembly is arranged between the input inner taper sleeve and the output inner taper sleeve; one end of the input locking piece is positioned in the input counter bore, the other end of the input locking piece is positioned in the output avoiding bore, and the input locking piece is arranged in the lamination assembly in a penetrating way; and one end of the output locking piece is positioned in the output counter bore, the other end of the output locking piece is positioned in the input avoiding bore, and the output locking piece is arranged in the lamination assembly in a penetrating way. The coupler is convenient for daily disassembly, overhaul and replacement of parts, and has simple disassembly and assembly procedures and a more compact overall structure.

Description

Novel expansion sleeve coupler

Technical Field

The utility model belongs to the technical field of mechanical transmission, and particularly relates to a novel expansion sleeve coupler.

Background

In the field of process transmission, such as power transmission applications for gas turbines, steam turbines, high-speed centrifugal compressors, large axial compressors, etc., rotational speeds up to tens of thousands of revolutions are often used. A coupling is typically used to connect a drive shaft and a driven shaft for rotation together to transmit power.

The traditional expansion sleeve coupler comprises an input taper sleeve group, an input diaphragm group, an intermediate body, an output diaphragm group and an output taper sleeve group, wherein the input taper sleeve group comprises an input inner taper sleeve and an input outer lock sleeve, the output taper sleeve group comprises an output inner taper sleeve and an output outer taper sleeve, the input inner taper sleeve is connected with the input outer lock sleeve through first bolts, the head of the first bolts is arranged on one side close to the intermediate body, the input inner taper sleeve is connected with the input diaphragm group through second bolts, the output inner taper sleeve is connected with the output diaphragm group through third bolts, and the other side of the intermediate body is connected with the output diaphragm group and the output inner taper sleeve through third bolts.

However, because the head of the first bolt is disposed at one side close to the intermediate body, and the second bolt and the third bolt are both disposed at the outer sides of the first bolt, the input membrane group and the output membrane group block the two corresponding first bolts, so that the input inner taper sleeve, the input outer taper sleeve, the output inner taper sleeve and the output outer lock sleeve cannot be directly disassembled without dismantling the intermediate body, the input membrane group and the output membrane group, and the disassembly and assembly process is complicated.

Disclosure of Invention

The utility model aims to provide a novel expansion sleeve coupler, which aims to solve the technical problem that an input inner taper sleeve, an input outer lock sleeve, an output inner taper sleeve and an output outer lock sleeve cannot be directly disassembled under the condition that an intermediate body, an input diaphragm group and an output diaphragm group are not disassembled first, and the disassembly and assembly process is complicated.

In order to achieve the above purpose, the utility model adopts the following technical scheme:

the utility model provides a novel expansion sleeve coupler, which comprises the following components: an input outer lock sleeve having an input outer lock hole; the input inner taper sleeve is provided with an input inner lock hole, an input avoidance hole and an input countersunk hole which are arranged in a separated mode, and the input inner lock hole is aligned with the input outer lock hole in the axial direction; an input fastener locked in the input inner lock hole from the input outer lock hole; an output outer lock sleeve having an output outer lock hole; the output inner taper sleeve is provided with an output inner lock hole, an output avoidance hole and an output countersunk hole which are arranged in a separated mode, the output inner lock hole is aligned with the output outer lock hole in the axial direction, the output avoidance hole and the input countersunk hole are arranged in an overlapping mode in the axial direction, and the output countersunk hole and the input avoidance hole are arranged in an overlapping mode in the axial direction; the output fastener is locked in the output inner lock hole from the output outer lock hole; the lamination assembly is arranged between the input inner taper sleeve and the output inner taper sleeve; one end of the input locking piece is positioned in the input counter bore, the other end of the input locking piece is positioned in the output avoidance bore, and the input locking piece is arranged in the lamination assembly in a penetrating way; and one end of the output locking piece is positioned in the output counter bore, the other end of the output locking piece is positioned in the input avoiding bore, and the output locking piece is arranged in the lamination assembly in a penetrating way.

In some possible implementations, the input outer sleeve includes a first input taper and a first input mount connected to each other, the input inner sleeve includes a second input taper and a second input mount connected to each other, the output outer sleeve includes a first output taper and a first output mount connected to each other, and the output inner sleeve includes a second output taper and a second output mount connected to each other; the first input conical part is sleeved on the second input conical part, the first input installation part is arranged adjacent to the second input installation part, the input outer lock hole is positioned at the first input installation part, and the input inner lock hole is positioned at the second input installation part; the first output conical part is sleeved on the second output conical part, the first output installation part and the second output installation part are adjacently arranged, the output outer lock hole is positioned at the first output installation part, and the output inner lock hole is positioned at the second output installation part.

In some possible implementations, the inner diameter of the first input taper portion increases from the input direction to the output direction, the outer diameter of the second input taper portion increases from the input direction to the output direction, the inner diameter of the first output taper portion decreases from the input direction to the output direction, and the outer diameter of the second output taper portion decreases from the input direction to the output direction.

In some possible implementations, the outer diameter of the first input mounting portion, the outer diameter of the second input mounting portion, the outer diameter of the first output mounting portion, and the outer diameter of the second output mounting portion are all the same.

In some possible implementations, the input relief hole and the input counter bore are both located in the second input mounting portion, and the output relief hole and the output counter bore are both located in the second output mounting portion.

In some possible implementations, the input fastener and the output fastener are self-locking bolts, and the input inner lock hole and the output inner lock hole are self-locking threaded holes.

In some possible implementations, the lamination assembly includes: the input gasket is arranged adjacent to the input inner cone sleeve; the diaphragm group is arranged adjacent to the input gasket and is provided with an axial center hole; and the output gasket is arranged adjacent to the diaphragm group and the output inner cone sleeve.

In some possible implementations, the set of diaphragms includes a multi-layer corrugated diaphragm including radially outer, middle, and inner planar segments disposed from edge to center.

In some possible implementations, the input lock and the output lock are both disposed through the outer planar segment.

In some possible implementations, the input gasket and the output gasket are both provided with avoiding grooves for avoiding the middle corrugated section.

In some possible implementations, the input lock includes: the head of the first flange bolt is positioned in the input countersunk hole, the rod of the first flange bolt penetrates through the input inner taper sleeve, the lamination assembly and the output inner taper sleeve, and the tail of the first flange bolt is positioned in the output avoidance hole; and the first flange nut is positioned in the output avoidance hole and sleeved at the tail part of the first flange bolt.

In some possible implementations, the output lock includes: the head of the second flange bolt is positioned in the output countersunk hole, the rod of the second flange bolt penetrates through the output inner taper sleeve, the lamination assembly and the input inner taper sleeve, and the tail of the second flange bolt is positioned in the input avoiding hole; and the second flange nut is positioned in the input avoidance hole and sleeved at the tail part of the second flange bolt.

The novel expansion sleeve coupler provided by the utility model has at least the following technical effects: compared with the prior art, the input fastening piece is locked in the input inner lock hole from the input outer lock hole, the output fastening piece is locked in the output inner lock hole from the output outer lock hole, the traditional intermediate body is omitted, the input fastening piece and the output fastening piece are respectively locked to the input inner taper sleeve and the output inner taper sleeve from the outer sides of the input outer lock sleeve and the output outer lock sleeve relative to the lamination assembly, the lamination assembly cannot form shielding on the input fastening piece and the output fastening piece, namely, the installation directions of the input fastening piece and the output fastening piece are opposite to the installation directions of the traditional fastening piece, the fastening head of the input fastening piece and the fastening head of the output fastening piece are exposed on the outer surface of the coupler, shielding of other structures is avoided, the routine disassembly, overhaul and replacement of parts are facilitated, and the disassembly and assembly time are reduced; moreover, due to the design of the input counter bore, the output counter bore, the input avoidance bore and the output avoidance bore, the input locking piece and the output locking piece can be contained in the outer surface of the coupler, so that the whole structure is more compact, and scraping and collision can be avoided.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present utility model, the drawings that are needed in the embodiments or the description of the prior art will be briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present utility model, and that other drawings can be obtained according to these drawings without inventive effort for a person skilled in the art.

FIG. 1 is a schematic view of a novel expansion joint coupling according to one embodiment of the present utility model;

FIG. 2 is a schematic illustration of an input or output inner cone sleeve of the coupling of FIG. 1;

FIG. 3 is a schematic illustration of an input outer sleeve or an output outer sleeve of the coupling of FIG. 1;

FIG. 4 is a schematic view of a corner of an input inner cone sleeve of the coupling of FIG. 1;

fig. 5 is a schematic view of a novel expansion sleeve coupling according to another embodiment of the present utility model.

Reference numerals illustrate:

1. the coupling, 10, input outer lock sleeve, 11, first input taper portion, 12, first input mounting portion, 121, input outer lock hole, 20, input inner taper sleeve, 21, second input taper portion, 22, second input mounting portion, 221, input inner lock hole, 222, input avoidance hole, 223, input counter bore, 224, input transition angle, 30, input fastener, 40, output outer lock sleeve, 41, first output taper portion, 42, first output mounting portion, 421, output outer lock hole, 50, output inner taper sleeve, 51, second output taper portion, 52, second output mounting portion, 521, output inner lock hole, 522, output avoidance hole, 523, output counter bore, 60, output fastener, 70, lamination assembly, 71, input gasket, 711, avoidance groove, 72, diaphragm set, 721, outer planar section 722, intermediate bellows section, 723, inner planar section, 73, output gasket, 80, input locking member, 81, first flange bolt, 82, first flange, 83, first flange, 84, second flange, 92, second flange, third flange, 94, fourth flange, 93, fourth flange, and fourth flange.

Detailed Description

In order to make the technical problems, technical schemes and beneficial effects to be solved more clear, the utility model is further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are for purposes of illustration only and are not intended to limit the scope of the utility model.

When an element is referred to as being "fixed," "secured," "connected," "disposed," "secured" to another element, there may be no intervening elements present. Herein, "plurality" refers to two and more numbers, and "number" refers to one and more numbers.

Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this utility model belongs.

Referring to fig. 1 to 5, a description will now be given of a novel expansion sleeve coupling 1 according to an embodiment of the present utility model.

Referring to fig. 1 to 5, an embodiment of the present utility model provides a novel expansion sleeve coupling 1, wherein a rotation axis of the coupling 1 extends in an axial direction, and the expansion sleeve coupling comprises: an input outer lock sleeve 10 having an input outer lock hole 121; the input inner taper sleeve 20 is provided with an input inner lock hole 221, an input avoidance hole 222 and an input countersunk hole 223 which are arranged in a separated mode, and the input inner lock hole 221 is axially aligned with the input outer lock hole 121; an input fastener 30 locked in the input inner lock hole 221 from the input outer lock hole 121; an output outer lock sleeve 40 having an output outer lock hole 421; the output inner taper sleeve 50 is provided with an output inner lock hole 521, an output avoidance hole 522 and an output countersunk hole 523 which are arranged separately, wherein the output inner lock hole 521 is axially aligned with the output outer lock hole 421, the output avoidance hole 522 is axially overlapped with the input countersunk hole 223, and the output countersunk hole 523 is axially overlapped with the input avoidance hole 222; an output fastener 60 locked in the output inner lock hole 521 from the output outer lock hole 421; a lamination assembly 70 disposed between the input inner cone sleeve 20 and the output inner cone sleeve 50; an input locking member 80 having one end positioned in the input counter bore 223 and the other end positioned in the output relief bore 522, the input locking member 80 being disposed through the lamination assembly 70; and an output lock 90, one end of which is located in the output counter bore 523 and the other end of which is located in the input relief bore 222, and the output lock 90 being provided in the lamination assembly 70.

The input outer lock hole 121 and the output outer lock hole 421 are circular through holes, the input inner lock hole 221 and the output inner lock hole 521 are threaded holes, the number of the input outer lock hole 121 and the input inner lock hole 221 is the same as the number of the input fasteners 30, and one or more of the input outer lock hole 421 and the output inner lock hole 521 is the same as the number of the output fasteners 60, and one or more of the input outer lock hole 121 and the input inner lock hole 221 are the same as the number of the output fasteners 60. The number of the output counter bores 522 and the input counter bores 223 is the same as the number of the input locking members 80, and the number of the output counter bores 523 and the input counter bores 222 is the same as the number of the output locking members 90, and may be one or more. The holes are all independently arranged, and spatial interference does not exist between the holes.

Specifically, the input fastener 30 is locked in the input inner locking hole 221 from the input outer locking hole 121, the output fastener 60 is locked in the output inner locking hole 521 from the output outer locking hole 421, and the lamination assembly 70 is directly disposed between the input inner cone sleeve 20 and the output inner cone sleeve 50, eliminating the conventional intermediate body, and since the input fastener 30 and the output fastener 60 are locked to the input inner cone sleeve 20 and the output inner cone sleeve 50 from the outside of the input outer lock sleeve 10 and the output outer lock sleeve 40, respectively, with respect to the lamination assembly 70, the lamination assembly 70 does not form shielding of the input fastener 30 and the output fastener 60, i.e., the installation direction of the input fastener 30 and the output fastener 60 is opposite to the installation direction of the conventional fastener, the fastening heads of the input fastener 30 and the fastening heads of the output fastener 60 are exposed to the outer surface of the coupling 1, and shielding of other structures is not provided, so that the assembly and disassembly are convenient.

The input lock 80 is used to connect the input inner cone sleeve 20, the lamination assembly 70 and the output inner cone sleeve 50 together from the input direction to the output direction; the output lock 90 is used to connect the output inner cone sleeve 50, the lamination assembly 70, and the input inner cone sleeve 20 together from the output direction to the input direction. The output avoidance hole 522 and the input counter bore 223 are overlapped in the axial direction, and the output counter bore 523 and the input avoidance hole 222 are overlapped in the axial direction, which can be understood to be aligned in the axial direction or be misplaced, so long as the output avoidance hole 522 and the input avoidance hole 222 are ensured to respectively reserve sufficient avoidance spaces for the input locking member 80 and the output locking member 90.

The inner diameter of the input inner cone sleeve 20 and the inner diameter of the output inner cone sleeve 50 may be the same or different. The input outer sleeve 10, the input inner sleeve 20, the output outer sleeve 40 and the output inner sleeve 50 can be made of high-strength alloy materials so as to improve the strength requirement of the coupling 1 and design safety margin. The fit tapered surfaces of the input outer lock sleeve 10 and the input inner taper sleeve 20, the fit tapered surfaces of the output outer lock sleeve 40 and the output inner taper sleeve 50 can be oiled to prevent rust.

The novel expansion sleeve coupler 1 provided by the embodiment of the utility model has at least the following technical effects: compared with the prior art, in the embodiment of the utility model, the input fastening piece 30 is locked in the input inner lock hole 221 from the input outer lock hole 121, the output fastening piece 60 is locked in the output inner lock hole 521 from the output outer lock hole 421, the traditional intermediate body is eliminated, the input fastening piece 30 and the output fastening piece 60 are respectively locked to the input inner taper sleeve 20 and the output inner taper sleeve 50 from the outer sides of the input outer lock sleeve 10 and the output outer lock sleeve 40 relative to the lamination assembly 70, the lamination assembly 70 does not form shielding on the input fastening piece 30 and the output fastening piece 60, namely, the installation direction of the input fastening piece 30 and the output fastening piece 60 is opposite to the installation direction of the traditional fastening piece, the fastening head of the input fastening piece 30 and the fastening head of the output fastening piece 60 are exposed on the outer surface of the coupler 1, shielding of other structures is avoided, the routine disassembly, maintenance and replacement parts are convenient, and the disassembly and assembly and disassembly time are shortened; moreover, due to the design of the input counter bore 223, the output counter bore 523, the input avoidance bore 222 and the output avoidance bore 522, the input locking piece 80 and the output locking piece 90 can be contained in the outer surface of the coupling 1, so that the overall structure is more compact, and scraping and collision can be avoided.

In some embodiments, the input outer sleeve 10 includes a first input taper 11 and a first input mount 12 connected to each other, the input inner sleeve 20 includes a second input taper 21 and a second input mount 22 connected to each other, the output outer sleeve 40 includes a first output taper 41 and a first output mount 42 connected to each other, and the output inner sleeve 50 includes a second output taper 51 and a second output mount 52 connected to each other; the first input taper portion 11 is sleeved on the second input taper portion 21, the first input installation portion 12 is arranged adjacent to the second input installation portion 22, the input outer lock hole 121 is located in the first input installation portion 12, and the input inner lock hole 221 is located in the second input installation portion 22; the first output taper portion 41 is sleeved on the second output taper portion 51, the first output mounting portion 42 is disposed adjacent to the second output mounting portion 52, the output outer lock hole 421 is located in the first output mounting portion 42, and the output inner lock hole 521 is located in the second output mounting portion 52.

The taper between the input outer sleeve 10 and the input inner sleeve 20 is the taper between the first input taper portion 11 and the second input taper portion 21, and the taper between the output outer sleeve 40 and the output inner sleeve 50 is the taper between the first output taper portion 41 and the second output taper portion 51. Through precise calculation, when the two tapers are 1:8, the slipping phenomenon can not occur between the first input taper portion 11 and the second input taper portion 21 and between the first output taper portion 41 and the second output taper portion 51 at high rotation speed and high frequent forward and reverse rotation impact and torque.

When the input outer lock sleeve 10, the input inner taper sleeve 20, the output outer lock sleeve 40 and the output inner taper sleeve 50 are processed, the contact areas between the first input taper portion 11 and the second input taper portion 21 and between the first output taper portion 41 and the second output taper portion 51 can be ensured to be more than 85%, and the axial gaps between the first input mounting portion 12 and the second input mounting portion 22 and between the first output mounting portion 42 and the second output mounting portion 52 are strictly controlled to meet the requirement of the transmission capability, for example, the axial gaps between the first input mounting portion 12 and the second input mounting portion 22 and between the first output mounting portion 42 and the second output mounting portion 52 are 1mm to 1.1mm before the axial tightening, and the axial gaps are zero after the axial tightening.

In this embodiment, the first input taper portion 11 is sleeved on the second input taper portion 21, the input outer lock hole 121 is located on the first input mounting portion 12, the input inner lock hole 221 is located on the second input mounting portion 22, the first output taper portion 41 is sleeved on the second output taper portion 51, the output outer lock hole 421 is located on the first output mounting portion 42, and the output inner lock hole 521 is located on the second output mounting portion 52, that is, the input fastening member 30 and the output fastening member 60 are all located at positions near the edge of the coupling 1, so that edge tilting of the input outer lock sleeve 10, the input inner cone sleeve 20, the output outer lock sleeve 40 and the output inner cone sleeve 50 can be prevented, and reliability and effectiveness of power transmission can be ensured.

As shown in fig. 1 and 5, in some embodiments, the inner diameter of the first input taper portion 11 increases from the input direction to the output direction, the outer diameter of the second input taper portion 21 increases from the input direction to the output direction, the inner diameter of the first output taper portion 41 decreases from the input direction to the output direction, and the outer diameter of the second output taper portion 51 decreases from the input direction to the output direction, and based on such a structural design, when the input fastener 30 and the output fastener 60 are detached, the input outer lock sleeve 10 and the output outer lock sleeve 40 are automatically detached, so that quick detachment and installation can be achieved, the detachment process is simplified, and the detachment time is reduced.

It should be noted that the trend of the inner diameter and the outer diameter may be to cover the entire taper hole, or may be to cover a partial taper hole, i.e. a small portion of the bottom of the taper hole is a cylindrical surface. For example, fig. 4 shows that the outer diameter of the second input cone 21 has an input transition corner 224, and the input transition corner 224 is located at the junction of the conical surface and the cylindrical surface of the second input cone 21, where the transition is rounded, so that the trend does not cover the entire cone hole.

As shown in fig. 1 and 5, in some of these embodiments, the outer diameter of the first input mounting portion 12, the outer diameter of the second input mounting portion 22, the outer diameter of the first output mounting portion 42, and the outer diameter of the second output mounting portion 52 are all the same. By the arrangement, the overall symmetry of the coupler 1 can be improved, the coupler can be suitable for a more compact installation space, scraping and abrasion caused by excessively uneven edge design are avoided, and uniformity in stress and power transmission is guaranteed. Of course, in other embodiments, different outer diameters may be selected according to the application scenario.

As shown in fig. 1, in some of these embodiments, both the input relief hole 222 and the input counter bore 223 are located in the second input mounting portion 22, and both the output relief hole 522 and the output counter bore 523 are located in the second output mounting portion 52. Correspondingly, the input locking member 80 and the output locking member 90 are respectively provided at the second input mounting portion 22 and the second output mounting portion 52, so that the edges of the input inner cone sleeve 20, the lamination assembly 70 and the output inner cone sleeve 50 can be prevented from tilting, and the reliability and the effectiveness of the power transmission can be ensured. In addition, the input locking piece 80, the output locking piece 90, the input fastening piece 30 and the output fastening piece 60 are all arranged at the corresponding installation parts, so that the overall structure is more compact, the outer diameter of the coupler 1 can be reduced, and the space utilization rate of the installation parts is improved.

The pitch diameters of the input outer lock hole 121, the output outer lock hole 421, the input inner lock hole 221 and the output inner lock hole 521 are the same, the pitch diameters of the input counter bore 223, the output counter bore 523, the input avoiding bore 222 and the output avoiding bore 522 are the same, and the input locking piece 80 and the output locking piece 90 are respectively staggered with the input fastening piece 30 and the output fastening piece 60 in the circumferential direction, are uniformly distributed, and have similar distribution circle diameters. The closest distance of the input lock 80 (output lock 90) to the rotational axis of the coupling 1 is smaller than the furthest distance of the input fastener 30 (output fastener 60) to the rotational axis of the coupling 1, and the furthest distance of the input lock 80 (output lock 90) to the rotational axis of the coupling 1 is greater than the closest distance of the input fastener 30 (output fastener 60) to the rotational axis of the coupling 1, which can avoid radially increasing the outer diameter of the coupling 1 for the purpose of installing locks and fasteners.

In some of these embodiments, the input fastener 30 and the output fastener 60 are self-locking bolts, and the input inner locking hole 221 and the output inner locking hole 521 are self-locking threaded holes. In this embodiment, the input fastener 30 and the output fastener 60 are self-locking bolts, and are gradually tightened in a diagonal order during installation, so that the mounting surfaces of the input outer lock sleeve 10 and the input inner cone sleeve 20 are tightly attached without gaps.

The input outer lock sleeve 10 (output outer lock sleeve 40) may further have an input end disassembly threaded hole (output end disassembly threaded hole) for hoisting and disassembling the coupling 1, the plurality of input end disassembly threaded holes (output end disassembly threaded holes) are uniformly distributed, the input end disassembly threaded holes (output end disassembly threaded holes) are staggered with the input inner lock hole 221 (output inner lock hole 521), the input avoidance holes 222 (output avoidance holes 522), the input counter bore 223 (output counter bore 523), when the coupling 1 needs to be disassembled, the input fastener 30 (output fastener 60) is disassembled first, then a bolt is screwed into the input end disassembly threaded hole (output end disassembly threaded hole), the bolt tail is abutted with the second input mounting portion 22 (second output mounting portion 52), and the input outer lock sleeve 10 (output outer lock sleeve 40) is jacked, and the input outer lock sleeve 10 (output outer lock sleeve 40) and the input inner cone sleeve 20 (output inner cone sleeve 50) are separated.

As shown in fig. 1 and 5, in some embodiments, lamination assembly 70 includes: an input pad 71 disposed adjacent to the input inner cone 20; a diaphragm group 72 disposed adjacent to the input pad 71 and having an axial center hole; and an output spacer 73, which is disposed in both the diaphragm set 72 and the output inner cone 50. In this embodiment, the diaphragm assembly 72 has a central hole in the axial direction, which improves flexibility, reduces production materials, reduces production costs, and reduces product weight.

The overall outline of the lamination assembly 70 may be circular or polygonal, for example, the lamination assembly 70 may be hexagonal in shape as a whole, corners may be rounded, corresponding sets of diaphragms 72 may be hexagonal in shape, corners may be rounded, and compared to a circular whole of diaphragms, the lamination assembly 70 may reduce production materials, reduce production costs, and reduce product weight.

The diaphragm group 72 includes a plurality of layers of diaphragms stacked and disposed, and an input pad 71 and an output pad 73 are disposed on both end surfaces of the diaphragm group 72, and the input pad 71, the diaphragm group 72 and the output pad 73 are pressed by a press. The multi-layer overlapped diaphragms have the advantages of low rigidity, high energy density and the like, and the faults of the whole coupler 1 cannot be immediately caused when a single diaphragm is damaged, so that the use reliability is higher, and the service life is longer.

As shown in fig. 5, in some embodiments, the diaphragm set 72 comprises a multi-layer corrugated diaphragm including radially outer planar segments 721, intermediate corrugated segments 722, and inner planar segments 723 disposed from edge to center. The corrugated membrane is corrugated, so that the corrugated membrane has good rigidity and can well transmit motion and power; and has good elasticity, thereby realizing the compensation of axial displacement, radial displacement and angular displacement.

The corrugated membrane is an elastic metal sheet, has a waveform molded surface with a preset shape, and can be formed by stamping through a die. The wave shape profile is calculated and compared through a finite element numerical method, a reasonable optimization scheme is provided, the strength of the diaphragm is checked, and the Goodman fatigue curve is corrected to be within 1.25 by utilizing the steady-state stress and the alternating stress calculated by the finite element, so that the corrugated diaphragm of the wave shape profile achieves infinite life design.

The corrugated diaphragm is preferably 301SS high-strength stainless steel, and the fatigue strength of the corrugated diaphragm is improved by surface hardening by adopting a cold drawing process without heat treatment, and the material has better mechanical properties and fatigue strength than common materials.

Compared with the traditional plane diaphragm, the corrugated diaphragm with the waveform-shaped molded surface has a flexible unfolding function, has constant rigidity and long service life, and compensates misalignment of two shafts of the device by means of the flexibility of the waveform, so that abrasion injury caused by misalignment is avoided. Of course, in some application scenarios, either a planar membrane or a corrugated membrane may be selectively used depending on the actual needs.

As shown in fig. 5, in some of these embodiments, the input lock 80 and the output lock 90 are each disposed through an outer planar segment 721, and an inner planar segment 723 is secured to the input and output shims 71, 73 by fasteners. In this embodiment, the input locking member 80 and the output locking member 90 are disposed in the outer planar section 721, so that on one hand, the middle corrugated section 722 can be avoided, damage to the middle corrugated section 722 is reduced, a better flexible unfolding effect of the middle corrugated section 722 is ensured, and a more constant rigidity and a longer service life of the middle corrugated section 722 are ensured; on the other hand, a larger mounting area may be provided compared to the inner planar segment 723 and the edges of the input inner cone sleeve 20, the output inner cone sleeve 50 and the lamination assembly 70 may be prevented from tilting and losing effective power transmission.

As shown in fig. 5, in some embodiments, the input pad 71 and the output pad 73 are each provided with a relief groove 711 that is formed to relief the intermediate bellows 722, and the relief groove 711 is disposed around the intermediate bellows 722. In this embodiment, the input pad 71 and the output pad 73 are all integrated, that is, the input pad 71 and the output pad 73 cover both end surfaces of the entire multi-layer corrugated film sheet, respectively. The avoidance grooves 711 can prevent the restriction of the expansion amplitude of the intermediate bellows 722 by the input pad 71 and the output pad 73, can provide a more sufficient deformation space for the intermediate bellows 722, and can ensure that the intermediate bellows 722 can provide a good power transmission effect.

As shown in fig. 1, in some embodiments, the input lock 80 includes: the head of the first flange bolt 81 is positioned in the input counter bore 223, the rod part of the first flange bolt 81 is penetrated in the input inner taper sleeve 20, the lamination assembly 70 and the output inner taper sleeve 50, and the tail part of the first flange bolt 81 is positioned in the output avoidance bore 522; a first flange 82 located between the head of the first flange bolt 81 and the bottom surface of the input counter bore 223; the first flange nut 83 is positioned in the output avoidance hole 522 and sleeved at the tail part of the first flange bolt 81; and a second flange 84 located at a side of the first flange nut 83 contacting the lamination assembly 70.

It will be appreciated that the through hole in which the shaft portion of the first flange bolt 81 passes through the input inner taper sleeve 20 communicates with the input counter bore 223 is provided as a hinge hole, and the clearance between the first flange bolt 81 and the through hole can be controlled in a predetermined range, for example, within 0.02mm, by the hinge connection, so that the clearance is eliminated as much as possible, and the coupling 1 can be adapted to a higher rotational speed, and at the same time, loosening of the first flange bolt 81 can be further avoided.

The first flange 82 is used for increasing friction between the head of the first flange bolt 81 and the bottom surface of the input counter bore 223; the second flange 84 serves to increase friction between the first flange nut 83 and the lamination assembly 70. Therefore, with the first flange 82 and the second flange 84, loosening of the first flange bolts 81 can be further avoided, and the maximum transmission torque of the coupling 1 can be increased.

The output avoidance hole 522 and the input counter bore 223 may be aligned in the axial direction, or may be offset in the axial direction, so long as the overlapping portion of the output avoidance hole 522 and the input counter bore 223 is ensured to completely accommodate the tail portion of the first flange bolt 81, the first flange nut 83, and the second flange 84.

Of course, in other embodiments, the input lock 80 may be a conventional bolt, a conventional pin, a screw, a threaded rod, a pin, a rivet, a weld, etc., without limitation. Alternatively, the first flange 82 and the second flange 84 may be provided, or the first flange 82 and the second flange 84 may not be provided, and the friction force with the input locking member 80 may be increased by sleeving a gasket, or the input locking member 80 may be a screw with two nuts, or the like, which is not limited.

As shown in fig. 1, in some embodiments, the output lock 90 includes: the head of the second flange bolt 91 is positioned in the output countersink 523, the rod part of the second flange bolt 91 is arranged in the output inner taper sleeve 50, the lamination assembly 70 and the input inner taper sleeve 20 in a penetrating way, and the tail part of the second flange bolt 91 is positioned in the input avoidance hole 222; a third flange 92 located between the head of the second flange bolt 91 and the bottom surface of the output counter bore 523; the second flange nut 93 is positioned in the input avoiding hole 222 and sleeved at the tail part of the second flange bolt 91; and a fourth flange 94 on a side of the second flange nut 93 in contact with the lamination assembly 70.

It will be appreciated that the through hole of the second flange bolt 91, through which the shaft portion of the second flange bolt 91 passes through the output inner taper sleeve 50, is in communication with the output counter bore 523, and is configured as a hinge hole, and a gap between the second flange bolt 91 and the through hole within a predetermined range, for example, within 0.02mm, can be controlled by the hinge connection, so that the gap is eliminated as much as possible, and the coupling 1 can be adapted to a higher rotational speed, and at the same time, loosening of the second flange bolt 91 can be further avoided.

The third flange 92 is used to increase friction between the head of the second flange bolt 91 and the bottom surface of the output counter bore 523; the fourth flange 94 serves to increase friction between the second flange nut 93 and the lamination assembly 70. Therefore, with the third flange plate 92 and the fourth flange plate 94, loosening of the second flange bolts 91 can be further avoided and the maximum transmission torque of the coupling 1 can be increased.

The input avoidance hole 222 and the output counter bore 523 may be aligned in the axial direction or may be offset in the axial direction, so long as the overlapping portion of the input avoidance hole 222 and the output counter bore 523 is ensured to completely accommodate the tail portion of the second flange bolt 91, the second flange nut 93, and the fourth flange 94.

Of course, in other embodiments, the output lock 90 may be a conventional bolt, a conventional pin, a screw, a threaded rod, a pin, a rivet, a weld, etc., without limitation. The output locking member 90 may alternatively be provided with the third flange 92 and the fourth flange 94, or the third flange 92 and the fourth flange 94 may not be provided, and a gasket may be sleeved to increase the friction force with the output locking member 90. The output lock 90 may also be a screw or the like with two nuts, without limitation.

When the coupling 1 in the above embodiment is applied to the power transmission scenario of the motor shaft and the spindle, the whole coupling 1 is sleeved on the motor shaft, lifted to the mounting position, and adjusted to the concentricity with the spindle, then the whole coupling 1 is pushed to the required position in the spindle direction, the input fastening piece 30 and the output fastening piece 60 are respectively screwed gradually according to the diagonal sequence, and the mounting surfaces of the input outer lock sleeve 10 and the input inner cone sleeve 20 and the mounting surfaces of the output outer lock sleeve 40 and the output inner cone sleeve 50 are ensured to be tightly attached without gaps. After the input fastening piece 30 and the output fastening piece 60 are fastened, the input inner taper sleeve 20 and the output inner taper sleeve 50 are respectively tightly held with the motor shaft and the main shaft, so that power generated by the motor is transmitted to the main shaft, the mounting errors of the coupler 1 and the main shaft are compensated by means of the flexibility of the corrugated diaphragm with the wavy profile, the centering capability of the axial direction and the angle is improved, no abrasion damage exists even if the height is not centered, the axial rigidity is linearly distributed, and the axial force generated by the corrugated diaphragm is constant and has higher reliability.

The novel expansion sleeve coupler 1 provided by the embodiment of the utility model has the characteristics of compact structure, small volume, high peak torque, enough transmission torque requirement, high rotation speed, high frequency forward and reverse rotation, light weight, high rotation speed, no noise, high reliability, long service life and the like, and meets the requirement of narrow installation space of equipment.

It will be appreciated that the portions of the foregoing embodiments may be freely combined or omitted to form different combined embodiments, and the details of the respective combined embodiments are not described herein again, and after this description, it may be considered that the description has already described the respective combined embodiments, and can support the different combined embodiments.

The foregoing description of the preferred embodiments of the utility model is not intended to be limiting, but rather is intended to cover all modifications, equivalents, and alternatives falling within the spirit and principles of the utility model.

Claims (10)

1. Novel tight sleeve shaft coupling expands, its characterized in that includes:

an input outer lock sleeve having an input outer lock hole;

the input inner taper sleeve is provided with an input inner lock hole, an input avoidance hole and an input countersunk hole which are arranged in a separated mode, and the input inner lock hole is aligned with the input outer lock hole in the axial direction;

an input fastener locked in the input inner lock hole from the input outer lock hole;

an output outer lock sleeve having an output outer lock hole;

the output inner taper sleeve is provided with an output inner lock hole, an output avoidance hole and an output countersunk hole which are arranged in a separated mode, the output inner lock hole is aligned with the output outer lock hole in the axial direction, the output avoidance hole and the input countersunk hole are arranged in an overlapping mode in the axial direction, and the output countersunk hole and the input avoidance hole are arranged in an overlapping mode in the axial direction;

the output fastener is locked in the output inner lock hole from the output outer lock hole;

the lamination assembly is arranged between the input inner taper sleeve and the output inner taper sleeve;

one end of the input locking piece is positioned in the input counter bore, the other end of the input locking piece is positioned in the output avoidance bore, and the input locking piece is arranged in the lamination assembly in a penetrating way; and

and one end of the output locking piece is positioned in the output counter bore, the other end of the output locking piece is positioned in the input avoiding bore, and the output locking piece is arranged in the lamination assembly in a penetrating way.

2. The coupling of claim 1, wherein the input outer sleeve comprises a first input taper and a first input mount connected to each other, the input inner sleeve comprises a second input taper and a second input mount connected to each other, the output outer sleeve comprises a first output taper and a first output mount connected to each other, and the output inner sleeve comprises a second output taper and a second output mount connected to each other;

the first input conical part is sleeved on the second input conical part, the first input installation part is arranged adjacent to the second input installation part, the input outer lock hole is positioned at the first input installation part, and the input inner lock hole is positioned at the second input installation part;

the first output conical part is sleeved on the second output conical part, the first output installation part and the second output installation part are adjacently arranged, the output outer lock hole is positioned at the first output installation part, and the output inner lock hole is positioned at the second output installation part.

3. The coupling of claim 2, wherein the inner diameter of the first input cone increases from the input direction to the output direction, the outer diameter of the second input cone increases from the input direction to the output direction, the inner diameter of the first output cone decreases from the input direction to the output direction, and the outer diameter of the second output cone decreases from the input direction to the output direction.

4. The coupling of claim 2, wherein the input relief hole and the input counterbore are both located in the second input mounting portion, and wherein the output relief hole and the output counterbore are both located in the second output mounting portion.

5. The coupling of claim 2, wherein an outer diameter of the first input mounting portion, an outer diameter of the second input mounting portion, an outer diameter of the first output mounting portion, and an outer diameter of the second output mounting portion are all the same.

6. The coupling of claim 1, wherein the lamination assembly comprises:

the input gasket is arranged adjacent to the input inner cone sleeve;

the diaphragm group is arranged adjacent to the input gasket and is provided with an axial center hole; and

and the output gasket is arranged adjacent to the diaphragm group and the output inner cone sleeve.

7. The coupling of claim 6, wherein the set of diaphragms comprises a multi-layer corrugated diaphragm comprising radially outer, intermediate and inner planar segments disposed from edge to center.

8. The coupling of claim 7, wherein the input lock and the output lock are each disposed through the outer planar segment.

9. The coupling of claim 7, wherein the input and output shims are each provided with a relief groove that relieves the intermediate bellows segment.

10. The coupling of claim 1, wherein the input lock comprises:

the head of the first flange bolt is positioned in the input countersunk hole, the rod of the first flange bolt penetrates through the input inner taper sleeve, the lamination assembly and the output inner taper sleeve, and the tail of the first flange bolt is positioned in the output avoidance hole; and

the first flange nut is positioned in the output avoidance hole and sleeved at the tail part of the first flange bolt;

and, the output lock includes:

the head of the second flange bolt is positioned in the output countersunk hole, the rod of the second flange bolt penetrates through the output inner taper sleeve, the lamination assembly and the input inner taper sleeve, and the tail of the second flange bolt is positioned in the input avoiding hole; and

the second flange nut is positioned in the input avoiding hole and sleeved at the tail part of the second flange bolt.