WO2009065312A1

WO2009065312A1 - Flexible coupling with composite special-shaped diaphragms

Info

Publication number: WO2009065312A1
Application number: PCT/CN2008/071718
Authority: WO
Inventors: Tianfan Huang
Original assignee: Suzhou Fl Coupling Drive Engineering Co., Ltd
Priority date: 2007-11-19
Filing date: 2008-07-22
Publication date: 2009-05-28
Also published as: CN201110323Y

Abstract

A flexible coupling with composite special-shaped diaphragms comprises flanges (1) in the end and diaphragm packets (2) composed of stacking diaphragm strips (211). A spacing section (3) is provided to connect every two adjacent diaphragm packets. Said coupling has at least two diaphragm packets. Said diaphragm packet includes two diaphragms (21) and a synchronous ring (22) provided between two diaphragms. Said spacing section could be a simple spacing disc, a telescopic spline-type spacing device, or a combined telescopic resilient spline-type spacing buffer device. The coupling suits for any rotating speeds and loads and has a compact structure, great load-bearing ability and good displacement compensating capacity. It is easy for assemble and disassemble, economic and durable.

Description

Composite shaped diaphragm flexible coupling

[1] Technical field

[2] The utility model relates to a composite shaped diaphragm flexible coupling.

[3] Background Art

[4] The mission of the flexible coupling is to transfer the torque of the prime mover to the same source of the driven machine, and compensate for the manufacturing error, installation error, load deformation, thermal deformation, etc. between the prime mover shaft and the driven machine shaft. The resulting axis is misaligned.

[5] The "comprehensive transmission capability" of a flexible coupling not only includes the basic "bearing capacity" required to transmit torque, but must also include the corresponding "displacement compensation" of the laminated diaphragm rod due to the misalignment of the equipment axis. Additional bending stress caused. For field work equipment such as aircraft, ship mooring, on-board equipment or equipment with poor working conditions, the additional bending stress caused by "displacement compensation" on the laminated diaphragm rod may even exceed the basics required to transmit torque. "Carrying capacity". Couplings must be designed with a strong emphasis on the amount of displacement compensation that the equipment may have under dynamic misalignment conditions.

[6] The conventional laminated diaphragm flexible coupling (hereinafter referred to as the diaphragm coupling) relies on the elastic deformation of the metal material to provide the displacement compensation amount for the above-mentioned axial dynamic misalignment.

According to the API671 standard, the contemporary flexible coupling should have a certain length of the interval (shaft), so that it can be freely installed, disassembled, maintained and repaired without moving or partially disassembling the equipment served by the coupling. And the coupling itself; another important role of the spacer is to amplify the radial displacement of the coupling

[8] Compared with hardened toothed toothed couplings, conventional laminated diaphragm flexible couplings do not present sliding friction and tooth surface bonding between the engaging surfaces, eliminating the need for cumbersome lubrication systems; The gear coupling is light and has a small moment of inertia. The transmission accuracy is very high, which is considered to be a "zero-empty" transmission and good economics. It is true that it also has some shortcomings, such as: The negative effect of the "zero-space" transmission is "zero buffering"; during operation, the diaphragm is worn due to the curvature interference between adjacent diaphragms; frequent and excessive bending deformation Causes the diaphragm to bend and fatigue and fail prematurely.

[9] However, the serious disadvantage of the traditional diaphragm coupling is that: due to the radial displacement compensation of the diaphragm coupling is It is the bending deformation of the diaphragm on the plane of rotation. From the viewpoint of the bearing capacity of the transmitted torque: it is desirable that the number of the tie bars appearing in the form of a film overlap is as good as possible, and the thickness of the film overlap is preferably as large as possible. From the viewpoint of easy bending deformation (ie, displacement compensation capability) of the diaphragm: it is desirable that the thickness of the diaphragm is as small as possible, and the larger the length of the diaphragm rod, the better. The paradox is that the product of the length of the tie rod and the number of tie rods determines the maximum diameter of the coupling. Whether increasing the length of the tie rod or increasing the number of tie rods, it is severely limited by the allowable speed and moment of inertia.

[10] Here we use the design example of a traditional diaphragm coupling to illustrate the sharpness of the above contradictions:

[11] Figures 13, 14, and 15 are conventional 6-, 8-, and 10-hole diaphragm couplings with angular displacement compensations of (2/3) °, (1/2) ° and ( 1/4) °, in order to meet the user's minimum radial displacement compensation requirements, the designer has to make the total length of the coupling 1.42 times, 2.55 times and 3.55 times the diameter of the outer edge of the coupling; The 12-hole diaphragm coupling has an angular displacement compensation of (1/8) ° and a total length of 5.55 times the outer diameter of the coupling.

[12] According to Figure 16, there is a mathematical relationship between the radial compensation of the diaphragm coupling and the bending deformation of the diaphragm.

[13] AY=Lxtan (Δφ)

[14] where: ΔΥ is the radial displacement compensation amount (mm) of the coupling; Δφ is the angular displacement compensation amount (°) of the coupling; L is the coupling between the two diaphragm combinations of the coupling Distance (mm).

[15] When the number of holes around the annular diaphragm is determined, it is a constant. Therefore, the only way to obtain a suitable ΔΥ value is to maximize the length of the coupling. This is why the 12-hole / 6-rod diaphragm coupling has such an amazing length.

[16] Half the effort to slightly reduce the radial compensation of the coupling at the expense of space, weight and moment of inertia. However, for the axial compensation of the coupling, it is just too much to help. At high speeds, excessively elongated diaphragm couplings can lead to a "supercritical" hazard. The long and heavy coupling not only increases the difficulty of the coupling's own dynamic balance, but also significantly increases the manufacturing cost. Not only does it increase the manufacturing cost of the coupling itself. What is more serious is that the slender couplings support the plant and the driving span, which greatly expands the total investment in enterprise equipment construction.

[17] The result of the contradiction is: Either the bearing capacity is insufficient, the coupling itself fails in advance; or the displacement compensation capability of the coupling is insufficient, resulting in frequent occurrence of "burning tile" shutdown accidents in the complete equipment. Compensation of traditional diaphragm coupling There is such a sharp contradiction between the ability and the carrying capacity, which makes the design work of the coupling difficult and impossible.

[18] Summary of the invention

[19] The purpose of this practical utility is to:

[20] Providing a composite form of a flexible diaphragm coupling, which, compared with a conventional diaphragm coupling, includes a bearing capacity and a compensation capability without significantly increasing the manufacturing cost. The comprehensive transmission capacity of the shaft has a very significant improvement;

[21] The on-site free assembly/disassembly process is equally convenient;

[22] Occupying the same size and space conditions as traditional diaphragm couplings, it has several times the axial, angular and radial displacement compensation (capability) of the traditional diaphragm coupling;

[23] The result of greatly reducing the degree of bending of the diaphragm to perform the displacement compensation task is to greatly liberate the bearing capacity of the profiled diaphragm coupling;

[24] The load-bearing capacity, compensation capacity and economy of the composite profiled diaphragm coupling will be significantly more comprehensive than conventional diaphragm couplings.

[25] The innovative idea of the utility model is:

[26] Replace only one or two annular diaphragm segments with a number of strip diaphragm segments to increase the number of diaphragm segments to increase the deflection of the coupling to a satisfactory level;

[27] The simple interval between the traditional diaphragm coupling and the single "shoring" task is a multi-functional interval with buffer capacity, axial displacement compensation capability, angular displacement compensation capability, and radial displacement compensation capability.

[28] The technical solution of the utility model is: a composite shaped flexible flexible coupling, comprising an end flange and a diaphragm combination, and a spacing section is connected between each adjacent two diaphragm combinations, The coupling has at least two diaphragm combinations, the diaphragm assembly comprising two diaphragm segments and a synchronizing ring disposed between the two diaphragm segments

[29] A further technical solution of the present invention is: a composite shaped flexible coupling, comprising an end flange and a diaphragm combination, and a spacing section is connected between each adjacent two diaphragm combinations The coupling has at least two diaphragm combinations, the diaphragm assembly comprising two diaphragm segments and a synchronization ring disposed between the two diaphragm segments; the spacer segments may be simple spacer disks or telescopic The spacer device, the telescopic spacer device can be a common spline expansion device, and can be a combined spline expansion device or a combined elastic spline telescopic device. The diaphragm segment includes a plurality of three-hole strip-shaped laminated diaphragm units, and adjacent three-hole strip-shaped laminated diaphragm units are closely spaced end to end, and the three-hole strip-shaped laminated diaphragm unit is provided a central bore located at the center and two outer bores at both ends; the diaphragm segment being a porous annular laminated diaphragm unit, the porous annular laminated diaphragm unit being evenly distributed on the inner indexing circumference with at least two The inner annular hole, the porous annular laminated diaphragm unit is evenly distributed on the outer indexing circumference with the same outer diameter as the inner bore, and the central angle between each adjacent inner and outer bore is the same; The connecting ring is evenly distributed with double the number of inner bores, and each adjacent two connecting holes are respectively connected with bolts by corresponding inner bores on different diaphragm segments on both sides of the synchronous ring; The segments are threaded through their outer bores to corresponding holes in the flange or spacer.

[30] A more detailed technical solution of the present invention is: a composite shaped flexible flexible coupling, comprising an end flange and a diaphragm combination, each adjacent two diaphragm combinations are connected a spacer, the coupling having at least two diaphragm combinations, the diaphragm assembly comprising two diaphragm segments and a synchronization ring disposed between the two diaphragm segments; the spacer segments may be simple spacer disks Or a telescopic spacer device, the telescopic spacer device may be a common spline expansion device, and may be a combined spline expansion device or a combined elastic spline expansion device; the diaphragm segment includes a plurality of three-hole strips The laminated film unit may have a three-hole shape-shaped diaphragm, a three-hole shuttle-shaped diaphragm, a three-hole bat-shaped diaphragm, or a three-hole crescent-shaped diaphragm; the adjacent three-hole strip-shaped laminated diaphragm unit is closely spaced end to end, and the three-hole strip-shaped laminated diaphragm unit is provided with an inner bore in the middle and two outer turns on both ends a hole segment; the diaphragm segment is a porous annular laminated diaphragm unit, the porous ring The laminated diaphragm unit is evenly distributed with at least two inner bores on the inner indexing circumference, and the porous annular laminated diaphragm unit is evenly distributed on the outer indexing circumference with the outer bore having the same number of inner bores. The central angle between each adjacent inner and outer pupil is the same; the shape of the porous annular laminated diaphragm unit may be a four-hole uniform diamond diaphragm with two inner bores and two outer bores. It is a triangular diaphragm with a total of three inner holes and three outer holes. It can be a rectangular diaphragm with an average of eight holes and four outer holes. It can also be The number of inner bores and outer bores is five ten-hole uniform annular diaphragms; the synchronization loops are evenly distributed with double-numbered inner bores, and each adjacent two joints are respectively Corresponding inner bores on different diaphragm segments on both sides of the synchronizing ring are connected by bolts; the diaphragm segments are screwed through corresponding outer holes on the flange or the spacer; the combined elastic spline is extended and contracted; The device includes an internal splined bushing, an external splined handle, and an even spacing between the internal splined bushing and the external splined handle a plurality of elastic splines distributed, the interior of the external spline handle is grease a storage chamber, wherein the grease storage chamber is sealed with a sealing cover with an o-shaped sealing jaw, and the position of the sealing cover is determined by the elastic file; the oil storage chamber and the spline are provided with an oil passage; The root of the grease storage chamber has a long pin extending radially through the grease storage chamber; the elastic spline may be a drum key, which may be a cylindrical nylon key, or a multi-layer cylindrical spiral spring key of a composite left and right spiral phase The combined spline expansion device includes an inner spline bushing, an outer spline shaft, and a plurality of evenly distributed flat or cylindrical keys between the inner spline bushing and the outer spline shaft, the outer The inside of the spline shaft is a grease storage chamber, and the grease storage chamber is sealed with a sealing cover with a 0-shaped sealing jaw, and the position of the sealing cover is determined by the elastic locking hole; the grease storage chamber is matched with the spline An oil passage and an oil filter are disposed therebetween; the flat key or the cylindrical key is internally provided with a mutually perpendicular τ-shaped oil passage, and a long pin penetrating the diameter of the grease storage chamber at a root portion of the grease storage chamber; the common spline The spline telescopic shaft of the telescopic device is a rectangular flower a key, an involute spline or a triangular spline, the common spline expansion device comprising an internal spline bushing and an external spline shaft, wherein the interior of the spline expansion device is a grease storage chamber, the grease storage chamber The cover is sealed by a cover with a 0-shaped sealing jaw, and the position of the cover is determined by an elastic file; the oil passage is disposed between the grease storage chamber and the spline; and one end of the grease storage chamber is provided A long pin that runs through the diameter of the entire grease reservoir.

[31] The advantages of the utility model are:

[32] 1. The utility model differs from the conventional diaphragm coupling in that there is only a single diaphragm section and a double diaphragm section, and the multi-membrane section of the modular design uses the displacement compensation task of the coupling evenly. It is distributed to a number of diaphragm segments, and the degree of stress concentration of a single laminated diaphragm is doubled, and the displacement compensation capability and the integrated transmission capability of the coupling are effectively improved.

[33] 2. The utility model of the special-shaped diaphragm coupling and the spline telescopic device form a new composite special-shaped diaphragm elastic coupling, and its bearing capacity, especially the buffering and compensation ability, is obviously higher than the traditional one. Diaphragm coupling. Different from the non-retractable interval of the traditional diaphragm coupling, the special-shaped diaphragm coupling makes full use of the precious space of the spacer which is only used for the fixed distance in the traditional diaphragm coupling, and the spacer is designed to be free. Telescopic spline expansion device. The bending stress burden added to the diaphragm by the axial displacement compensation task of the coupling is completely relieved, thereby further liberating the bearing capacity of the shaped diaphragm coupling;

[34] 3. The utility model adopts a combined hollow drum key or a spline expansion and contraction device of a multi-layer, left and right spiral staggered cylindrical spiral spring key, etc., not only has large axial free expansion and contraction capability, but also has a diameter The ability to compensate and buffer. [35] 4. Different from the traditional diaphragm coupling, it is required to use a large-diameter annular diaphragm material. The utility model can use a narrow strip-shaped diaphragm, and can manufacture a strip-shaped diaphragm by using inexpensive scraps. The utilization rate is as high as 90%, and the source is abundant, which greatly saves precious materials and punching mold costs, and reduces manufacturing costs.

[36] 5. The utility model does not need to move or partially disassemble the main equipment served by the coupling in the installation, disassembly and maintenance of the coupling, and meets the API-671 standard.

[37] 6. The grease storage chamber of the utility model is designed to provide long-term self-lubricating conditions for the coupling telescopic device.

[38] BRIEF DESCRIPTION OF THE DRAWINGS

[39] Figure 1 is a schematic view showing the structure of an extremely compact composite shaped diaphragm flexible coupling;

[40] FIG. 2 is a schematic structural view of a conventional composite shaped diaphragm flexible coupling;

[41] Fig. 3 is a schematic view showing the structure of a composite diaphragm flexible coupling with 4 diaphragm segments and a drum spline expansion and contraction device;

[42] Figure 3a is a transverse cross-sectional view of the middle position of the drum key of Figure 3;

[43] Fig. 3b is an external view of a multi-layer cylindrical coil spring key used to replace the left and right spiral phases of the drum key in Fig. 3;

Figure 3c is a side elevational view of Figure 3b;

[45] Figure 3d is a schematic view of a nylon cylinder key used to replace the drum key of Figure 3;

[46] Figure 4 is a schematic structural view of a conventional spline expansion device;

[47] Figure 5 is a schematic view showing the structure of a composite profiled flexible coupling with eight sets of diaphragm segments and a combined spline expansion device;

[48] Figure 5a is an oil path setting of the combined spline in the S-S cross-sectional view of Figure 5;

[49] Figure 6 shows the "profiled diaphragm flexible coupling" of the 4-diaphragm section placed at one end of the coupling, and the "drum-shaped spline coupling" placed at the other end of the coupling. Schematic;

[50] Figure 7 is a schematic view showing the structure of a shape-shaped shaped diaphragm;

[51] Figure 8 is a schematic view showing the structure of three strip-shaped shaped diaphragms of a shuttle shape, a bat shape and a crescent shape;

[52] Figure 9 is a schematic view of a four-hole diamond diaphragm;

[53] Figure 10 is a schematic view of a six-hole triangular diaphragm;

[54] Figure 11 is a schematic view of an eight-hole rectangular diaphragm;

[55] Figure 12 is a schematic view of a ten-hole annular diaphragm; Figure 13 is a schematic view showing the structure of a six-hole annular diaphragm flexible coupling in the prior art;

[57] FIG. 14 is a schematic structural view of an eight-hole annular diaphragm flexible coupling in the prior art;

[58] FIG. 15 is a schematic structural view of a ten-hole annular diaphragm flexible coupling in the prior art;

[59] Figure 16 is a schematic diagram of three-dimensional displacement compensation of a flexible coupling.

[60] Where: 1 flange; 11 bolts; 12 nuts; 13 grease storage chamber; 14 screws; 15 spring washers; 16 oil passages; 17 long pins; 18 flat keys; 19 T-shaped oil passages;

[61] 2 diaphragm combination; 21 diaphragm section; 211 three-hole strip laminated diaphragm unit; 2111 three-hole inline diaphragm; 21

12 three-hole shuttle-shaped diaphragm; 2113 three-hole bat-shaped diaphragm; 2114 three-hole crescent-shaped diaphragm; 212 porous annular laminated diaphragm unit; 2121 triangular diaphragm; 2122 diamond diaphragm; 2123 rectangular diaphragm; Diaphragm; 22 synchronizing ring; 23 internal thread bushing; 24 pad;

[62] 3 spacers; 31 leaf-shaped spacer discs; 32-shaped cross-section spacers; 33

a spacer disk having a U-shaped cross section;

[63] 4a combined spline expansion device; 4b combined elastic spline expansion device; 41 internal spline bushing; 42 external spline shaft; 43 internal spline bushing; 44 drum key; 45 cylindrical nylon key 46 composite multi-layer cylindrical spiral spring button; 47 inner gear; 48 outer gear;

[64] 5 ordinary spline expansion device; 51 internal spline bushing; 52 external spline shaft; 53

0-shaped sealing 圏; 54 blocking cover; 55 holes with elastic 圏; 56 oil filter;

[65] 6 external splines take over.

[66] Specific implementation

[67] The present invention will be further described below in conjunction with the accompanying drawings and embodiments:

[68] Embodiment: As shown in FIGS. 1 to 16, a composite shaped diaphragm flexible coupling includes a flange 1 at both ends, a diaphragm assembly 2, and a connection between adjacent diaphragm combinations 2 The spacer 3, the outer end of the outermost two diaphragm combinations 2 is connected to the inner end of the flange 1, the coupling has at least two diaphragm combinations 2, and the diaphragm assembly 2 comprises two diaphragm segments 21 And a synchronizing ring 22 placed between the two diaphragm segments 21.

[69] The diaphragm segment 21 includes a plurality of three-hole strip-shaped laminated diaphragm units 211, and adjacent three-hole strip-shaped laminated diaphragm units 211 are closely spaced end to end, and the three-hole strip-shaped laminated diaphragm The unit 211 is provided with an inner bore located in the center and two outer bores at the both ends.

[70] The diaphragm segment 21 is a single porous annular laminated diaphragm unit 212, and the porous annular laminated diaphragm unit 2 12 is evenly distributed on the inner circumference of the circumference with at least two inner bores, and the porous annular laminated diaphragm unit 212 is evenly distributed on the outer circumference of the outer circumference with the same number of outer bores as the inner bore, each adjacent The center angle between the inner and outer pupils is the same.

[71] The synchronizing ring 22 is evenly distributed with a connecting hole doubled to the number of inner bores, and the two adjacent nuts are respectively supported by the tightening force of the screw 14 with the spring washer 15 and the female thread bushing 23. The connecting holes are respectively screwed with the corresponding inner bores on the different diaphragm segments 21 on both sides of the synchronizing ring 22; the bolts 11 pass through the outer bore and the pads 24 and the flange 1 or the spacer 3 on both sides thereof Corresponding holes are tightened with nuts 12 to connect the diaphragm segments 21 to the flange 1 or the spacer 3 by means of screws.

[72] The three-hole strip-shaped laminated diaphragm unit 211 may have a three-hole inline diaphragm 2111, a three-hole shuttle diaphragm 2112, or a three-hole bat-shaped diaphragm 2113. It is a three-hole crescent-shaped diaphragm 2114.

[73] The shape of the porous annular laminated diaphragm unit 212 may be a four-hole uniform diamond-shaped diaphragm 2122 having two inner bores and two outer bores, and the number of inner bores and outer bores may be The three six-hole uniform triangular diaphragms 2121 can be an eight-hole uniform rectangular diaphragm 2123 with four inner bores and four outer bores, and the number of inner bores and outer bores can also be An annular diaphragm 2124 is evenly distributed for five ten holes.

[74] The spacer 3 may be a simple spacer or a telescopic spacer. The simple spacer disk may be a lotus-shaped spacer disk 31, which may be a spacer disk 32 of a U-shaped cross section, or a spacer disk 33 of a U-shaped cross section. The telescopic spacer device may be a common spline telescopic device 5, and may be a combined spline telescopic device 4a or a combined elastic spline telescopic device 4b.

[75] The combined elastic spline expansion device 4b includes an internal spline bushing 43, an external splined hand 6 and a plurality of elastic flowers evenly distributed between the internal spline bushing ₄₃ and the external splined hand ₆ The spacer, the spacer 33 of the u-shaped cross section is screwed to the outer side of the inner spline bushing 43, the outer baffle 48 is screwed to the inner side of the inner spline bushing 43, and the outer baffle 48 is also sleeved inside. The tray 47 has a radially inner side of the inner and outer discs and is sealedly connected with the outer splined handle 6, and the U-shaped cross-section spacer 33 and the inner and outer discs sandwich the elastic spline; the external spline handles The inside of the 6 is a grease storage chamber 13, and the grease storage chamber 13 is sealed with a cover 54 having a 0-shaped sealing jaw 53, and the position of the cover 54 is determined by the elastic lock 55. The grease storage chamber 13 is An oil passage 16 is disposed between the spline fittings; the root of the grease storage chamber 13 has a long pin 17 extending radially through the grease storage chamber 13; the elastic spline may be a drum key 44, which may be a cylindrical nylon The key 45 may also be a multi-layer cylindrical coil spring key 46 of a composite left and right phase. [76] The combined spline expansion device 4a includes an inner spline bushing 41, an outer spline shaft 42 and a plurality of evenly spaced rectangular flats between the inner spline bushing 41 and the outer spline shaft 42. The key 18 or the cylindrical key, the inside of the external spline shaft 42 is a grease storage chamber 13, and the grease storage chamber 13 is sealed with a cover 54 having a 0-shaped sealing jaw 53, and the hole is determined by the elastic stopper 55. a position of the cover 54; an oil passage 16 and an oil filter 56 are disposed between the grease storage chamber 13 and the spline fitting; the inside of the flat key 18 or the cylindrical key is provided with a mutually perpendicular T-shaped oil passage 19 At the root of the grease storage chamber 13, there is a long pin 17 penetrating the diameter of the grease reservoir 13.

[77] The spline telescopic shaft of the ordinary spline expansion and contraction device 5 is a rectangular spline, an involute spline or a triangular spline, and the ordinary spline telescopic device 5 includes an internal spline bushing 51 and an external spline. The shaft 52, the inside of the spline expansion and contraction device 5 is a grease storage chamber 13, and the grease storage chamber 13 is sealed with a cover 54 having a 0-shaped sealing jaw 53 to define the blocking cover 54 with a flexible opening 55. A position of the oil storage chamber 13 and the spline fitting is provided with an oil passage 16; one end of the grease storage chamber 13 is provided with a long pin 17 extending through the entire diameter of the grease storage chamber 13.

[78] Example 1:

[79] As shown in FIG. 1, a composite shaped flexible coupling has two flanges 1, two diaphragm combinations 2 connected to two flanges 1, and two diaphragm combinations. Interval section 3 between 2 connections. The composite shaped diaphragm flexible coupling has two diaphragm combinations 2, each diaphragm assembly 2 includes two diaphragm segments 21 and a synchronizing ring 22 disposed between the two diaphragm segments 21; The diaphragm segment 21 includes a plurality of three-hole strip-shaped laminated diaphragm units 211 (see FIG. 8) that are end to end dependent. A two-leaf spacer disc 31 is interposed between the two diaphragm assemblies 2, the shaft of the flange is disposed on the inner side, and the synchronizing ring 22 of the diaphragm assembly 2 is directly sleeved outside the shaft sleeve of the flange.

[80] The advantage of this embodiment is that the axial dimension of the coupling is even smaller than the outer diameter of the coupling; the coupling still guarantees an angular displacement compensation capability of 1° under the premise of extremely compact spatial dimensions; Under such a compact condition, the main equipment can still be disassembled or partially disassembled, only the bolts and nuts are first removed, the spacer disc is pulled out from the side, and then the four diaphragm segments and the synchronizing ring are removed from the spacer disc. The space is drawn out. This solution is especially suitable for aircraft, ship, wind turbine, vehicle equipment, etc., which have very strict requirements on the weight and space size of the coupling, and the movable equipment and field work equipment with strict indexing ability for the coupling.

[81] Example 2: [82] As shown in FIG. 2, a composite shaped flexible coupling has two flanges 1, two diaphragm combinations 2 connected to two flanges 1, and two diaphragm combinations. The spacer 3 connected between the two, the end face of the flange 1 is connected to the end face of the diaphragm assembly 2, and the spacer 3 is a spacer disk 32 having a U-shaped cross section. The composite shaped diaphragm flexible coupling has two diaphragm combinations 2, each diaphragm assembly 2 includes two diaphragm segments 21 and a synchronizing ring 22 disposed between the two diaphragm segments 21; The diaphragm segment 21 may be a plurality of end-to-end multiple three-hole strip-shaped laminated diaphragm units 211 or a porous annular laminated diaphragm unit 212.

[83] This embodiment is suitable for the equipment to have strict control of the radial dimension of the coupling and allows the coupling to have a relatively loose axial space. The coupling complies with the API671 standard, and the coupling can be disassembled freely at the site so that the maintenance coupling itself can be easily inspected, and the coupling can be removed from the input and output shafts after the middle section of the coupling is removed. Flange. More importantly, after removing the coupling flange, it is easy to inspect and repair the bearing cavity of the equipment.

[84] Example 3:

[85] As shown in Fig. 3, a composite shaped diaphragm flexible coupling comprises two flanges 1, a diaphragm combination 2, a spacer 3, and a bolt 11, a nut 12 and the like. The composite profiled flexible coupling has two membrane combinations 2, each membrane assembly 2 comprising two membrane segments 21 and a synchronization ring 2 2 disposed between the two membrane segments 21. The diaphragm segment 21 may be a plurality of end-to-end multiple three-hole strip-shaped laminated diaphragm units 211 or a porous annular laminated diaphragm unit 212; the spacer 3 is a telescopic spacer.

[86] The telescopic spacer is a combined elastic spline expansion device 4b comprising an internal spline bushing 43, an external splined handle 6 and an evenly spaced inner spline bushing 43 and an outer splined handle 6 A plurality of distributed drum keys 44, or a composite left and right spiral interlaced multi-layer cylindrical coil spring key 46, or a cylindrical nylon key 45. The inside of the external spline handle 6 is a grease storage chamber 13, and the grease storage chamber 13

Sealing with a cover 54 having a 0-shaped sealing jaw 53 to define the position of the blocking cover 54 with the elastic lock 55; the oil storage passage 13 is provided with an oil passage 16 between the grease storage chamber 13; The root of the chamber 13 has a long pin 17 that runs through the diameter of the grease reservoir 13.

[87] As shown in FIG. 4, the telescopic spacer device may also be a conventional spline telescopic device 5, which is composed of an internal spline bushing 51 and an external spline shaft 52, and the inside of the spline telescopic device 5 a grease storage chamber 13, the grease storage chamber 13

Sealing with a cover 54 having a 0-shaped sealing jaw 53 to fix the position of the cover 54 with the elastic lock 55; An oil passage 16 is disposed between the grease storage chamber 13 and the spline fitting; one end of the grease reservoir 13 is provided with a long pin 17 extending through the entire diameter of the grease reservoir 13.

[88] In order to save space, the two diaphragms are combined and placed on the outside of the input and output shaft sleeves, and the middle spacer shaft of the traditional diaphragm flexible coupling is transformed into an elastic spline expansion and damping device. The hollow spline shaft is designed as a grease reservoir to provide lubrication to the splined working surface.

[89] The advantage of this embodiment lies in: Under the premise of making full use of the semi-idle space, the coupling not only has a large free-scaling function, but also has an angular direction, a radial displacement compensation function and an obvious buffering function; Under the premise of the same space, its three-way compensation ability and bearing capacity are significantly higher than the traditional diaphragm coupling.

[90] This embodiment is a new "composite elastic coupling" formed by the "shaped diaphragm coupling" and the "spring joint coupling". The presence of the spline telescopic device greatly reduces the pressure of the bending fatigue compensated by the axial displacement of the profiled diaphragm. The coupling has a much larger axial displacement compensation capability, which effectively avoids the extra large bending stress caused by the axial deformation of the device on the diaphragm; the lubrication and resistance of the shaped diaphragm coupling are utilized. Due to the high temperature characteristics, the shaped diaphragm coupling can be intentionally arranged close to the heat engine equipment, and the spring pin coupling that needs lubrication is kept away from the high temperature equipment.

[91] Example 4:

[92] As shown in Fig. 5, a composite shaped diaphragm flexible coupling comprises two flanges 1, a diaphragm combination 2, a spacer 3, and a bolt 11, a nut 12 and the like. The composite shaped flexible coupling has four diaphragm combinations 2, each diaphragm assembly 2 comprising two diaphragm segments 21 and a synchronizing ring 2 2 disposed between the two diaphragm segments 21. The diaphragm segment 21 may be a plurality of three-hole strip-shaped laminated diaphragm unit 211 end to end or a porous annular laminated diaphragm unit 212; the composite shaped diaphragm flexible coupling has two More than one diaphragm combination 2吋, each of the two diaphragm combinations 2 is sandwiched by a spacer 3; in this embodiment, the two spaced sections 3 on both sides are a lotus-shaped spacer disc 31, and the middlemost spacer 3 In the combined spline expansion and contraction device 4a, the combined spline expansion and contraction device 4 includes an inner spline bushing 41, an outer spline shaft 42 and an even distribution between the inner spline bushing 41 and the outer spline shaft 42. a plurality of flat keys 18, the inside of the outer spline shaft 42 is a grease storage chamber 13, and the grease storage chamber 13

The cover 54 is sealed with a 0-shaped sealing jaw 53 to fix the position of the cover 54 with the elastic lock 55; the oil passage 16 and the oil filter 56 are disposed between the grease storage chamber 13 and the spline. The inside of the flat key 18 is provided with a T-shaped oil passage 19 perpendicular to each other, and penetrates through the grease storage chamber 13 at the root of the grease storage chamber 13. Long pin 17 of diameter.

[93] This embodiment is a further development of Embodiment 3: multiplying the number of diaphragm combinations in order to multiply the angular and radial displacement compensation capability of the coupling; the common spline expansion device is a combination The spline expansion device is designed to improve the accessibility of the grease in the spline work and improve the efficiency of the spline work. 6 The composite shaped flexible coupling of the diaphragm combination has an angular displacement compensation of up to 5°, and the axial free extension can be as high as several tens of millimeters or more. At medium and low speeds, the composite diaphragm flexible joint of the 6 diaphragm combination can challenge the traditional universal joint.

[94] Example 5:

[95] As shown in Fig. 5, a composite shaped diaphragm flexible coupling includes a flange 1, a diaphragm combination 2, a spline telescopic device, a handle 6 and a bolt 11, a nut 12, and the like. The composite shaped flexible flexible coupling has a plurality of diaphragm combinations 2, each diaphragm assembly 2 includes two diaphragm segments 21 and a synchronizing ring 22 disposed between the two diaphragm segments 21; A spacer disk 32 having a U-shaped cross section is sandwiched between each of the two diaphragm assemblies 2.

[96] The spline telescopic device is designed integrally with the handle 6, and a grease storage chamber 13 is provided inside the handle 6.

The outer end of the take-up 6 is provided with a horizontal key 20. In order to make full use of the effective space, the take-up 6 and the external spline shaft 52 are combined into one. The grease storage chamber 13 is disposed inside the take-up 6 and the spline expansion and contraction device 5, and the grease storage chamber 13

The plug 54 with a 0-shaped seal 圏 53 is sealed, and the position of the cover 54 is determined by the elastic lock 55. An oil passage 16 is disposed between the grease storage chamber 13 and the spline fitting; one end of the grease reservoir 13 is provided with a long pin 17 extending through the entire diameter of the grease reservoir 13.

[97] In this embodiment, the spline telescopic device is moved from the middle of the coupling to the position where the "hands" are located, making full use of the axial space of the hand.

[98] The advantage of the utility model is that: under the premise of making full use of the semi-idle space, the coupling not only has a great free expansion and contraction function, but also has a large angular and radial displacement compensation function; Displacement compensation function and obvious buffer function; the existence of elastic spline expansion device makes the bearing capacity of the composite shaped diaphragm flexible coupling significantly higher than that of the traditional diaphragm coupling, and its three-way compensation ability can even Traditional universal couplings are comparable. In the middle and low speed areas, the profiled diaphragm coupling with a multi-membrane combination with an elastic spline expansion device is actually an elastic universal coupling.

[99] The utility model has the advantages of compact size under the conditions of medium and low speed and heavy load, free assembly and disassembly in the field. Convenient, bearing capacity, axial, angular, radial displacement compensation, and high economics.

Claims

Claim

A composite profiled flexible coupling comprising an end flange (1) and a diaphragm assembly (2) with a spacer between each adjacent two diaphragm combinations (2) 3), characterized in that the coupling has at least two diaphragm combinations (2), the diaphragm assembly (2) comprising two diaphragm segments (21) and two diaphragm segments (21) ) between the sync loops (22).

2. According to the claims

The composite shaped flexible flexible coupling according to the above, characterized in that: the spacer (3) is a simple spacer disk or a telescopic spacer, and the telescopic spacer device can be a common spline expansion device (5) , can be a combined spline expansion device (4a), or a combined elastic spline expansion device (4b)

3. The composite shaped flexible flexible coupling according to claim 1, wherein: said diaphragm segment (21) comprises a plurality of three-hole strip-shaped laminated diaphragm units (211) adjacent to each other The three-hole strip-shaped laminated diaphragm unit (211) is closely spaced end to end, and the three-hole strip-shaped laminated diaphragm unit (211) is provided with an inner bore in the center and two outer bores at both ends.

4. The composite shaped flexible flexible coupling according to claim 1, wherein: said diaphragm segment (21) is a porous annular laminated diaphragm unit (212), said porous annular laminate The diaphragm unit (212) is evenly distributed on the inner indexing circumference with at least two inner bores, and the porous annular laminated diaphragm unit (212) is evenly distributed on the outer indexing circumference with the same number as the inner bore Outer bore, the center angle between each adjacent inner and outer bore is the same.

The composite profiled flexible coupling according to claim 3 or 4, characterized in that: the synchronization ring (22) is evenly distributed with double connection holes of the number of inner bores, each phase The two adjacent connecting holes are respectively connected with the corresponding inner bores on the different diaphragm segments (21) on both sides of the synchronizing ring (22); the diaphragm segments (21) pass through the outer bore and the flange ( 1) Or the corresponding hole on the spacer (3) is screwed.

The composite shaped flexible flexible coupling according to claim 3, wherein: the three-hole strip-shaped laminated diaphragm unit (211) has a shape of a three-hole in-line diaphragm ( 2111), can be a three-hole shuttle-shaped diaphragm (2112), can be a three-hole bat-shaped diaphragm (2113), or a three-hole crescent-shaped diaphragm (2114).

7. The composite profiled flexible coupling according to claim 4, wherein: the porous annular laminated diaphragm unit (212) has an outer bore and an outer bore. The four-hole uniform diamond-shaped diaphragm (2122) can be a six-hole uniform triangular diaphragm (2121) with three inner bores and outer bores, which can be the number of inner bores and outer bores. Each is a four-hole rectangular diaphragm (2123), which can also be a 10-hole uniform annular diaphragm (2124) with five inner bores and two outer bores.

8. The composite profiled flexible coupling according to claim 2, wherein: the combined elastic spline expansion device (4b) comprises an internal spline bushing (43), and an external spline handle (6) and a plurality of elastic splines evenly distributed between the inner spline bushing (43) and the outer splined handle (6), and the inside of the outer splined handle (6) is a grease storage chamber ( 13), the grease storage room

(13) Seal with a cover (54) with a 0-shaped seal 圏 (53), and use the elastic stop (55) to determine the position of the cover (54); the grease storage chamber (13) and spline An oil passage (16) is disposed between the fittings; a root of the grease storage chamber (13) has a long pin (17) extending radially through the grease storage chamber (13); the elastic spline may be a drum key ( 44), cylindrical nylon key (45) or composite left and right spiral phase multi-layer cylindrical spiral spring button (46).

9. The composite profiled flexible coupling according to claim 2, wherein: the combined spline expansion device (4a) comprises an internal spline bushing (41) and an external spline shaft ( 42) and the inside of the external spline shaft (42) with a number of evenly spaced cylindrical or flat keys (18) between the internal spline bushing (41) and the external spline shaft (42) Grease storage chamber (13) 'The grease storage chamber (13) is sealed with a cover (54) with a 0-shaped seal 圏 (53), and the position of the cover (54) is determined by the elastic lock (55). An oil passage (16) and an oil filter (56) are disposed between the grease storage chamber (13) and the spline fitting; the flat button (18) is internally provided with a mutually perpendicular T-shaped oil passage ( 19), there is a grease storage chamber at the root of the grease storage chamber (13)

(13) Long diameter pin (17).

10. The composite profiled flexible coupling according to claim 2, wherein: the common spline expansion device (5) comprises an internal spline bushing (51) and an external spline shaft (52) The spline telescopic shaft is a rectangular spline, an involute spline or a triangular spline, and the inside of the spline expansion device (5) is a grease storage chamber (13) for the grease storage chamber (13) With a 0-shaped seal 圏 (5 3) The cover (54) is sealed, and the position of the cover (54) is determined by the elastic lock (55); the oil passage (16) is disposed between the grease storage chamber (13) and the spline. One end of the grease storage chamber (13) is provided with a long pin (17) running through the entire grease storage chamber (13).