Diaphragm type high-torque high-rotating-speed flexible high-precision main shaft connecting device

Abstract

The utility model discloses a diaphragm type high-torque high-rotating-speed flexible high-precision main shaft connecting device, which relates to the technical field of couplings and comprises a first coupling side section and a second coupling side section, and a diaphragm is arranged between the first coupling side section and the second coupling side section. The first coupler side section and the second coupler side section are of the same structure and are symmetrically arranged. Each of the coupling side section I and the coupling side section II is provided with a side section body, a plurality of dismounting grooves are annularly formed in the outer side of each side section body in a penetrating manner, and a plurality of counter bore grooves are annularly formed in the inner side of each side section body in an array manner; a plurality of threaded holes are further formed in the inner side of the side section body; according to the utility model, the diaphragms are made of stainless steel, are stacked for use, have higher elasticity and torsional rigidity, and can provide reliable power transmission and positioning functions, and the diaphragms can absorb vibration and impact and compensate radial, angular and axial deviations, so that other mechanical elements are effectively protected; the service life of the coupler is prolonged.

Description

Technical Field

[0001] The utility model specifically relates to the technical field of couplings, and particularly to a diaphragm-type high-torque, high-speed, flexible and high-precision spindle coupling device. Background Technique

[0002] The diaphragm coupling has a relatively compact structure, zero backlash, high strength, long service life, no rotational clearance, is not affected by temperature and oil contamination, is acid-resistant, alkali-resistant and corrosion-proof, and is widely used in the shaft transmission of various mechanical devices, such as high-power water pumps, chemical pumps, fans, compressors, hydraulic machinery, petroleum machinery, printing machinery, textile machinery, chemical machinery, metallurgical machinery, aviation, high-speed power systems of ships, steam turbines, piston-type power systems, tracked vehicles, as well as high-speed generator sets and high-power mechanical transmission systems. After dynamic balancing, it can generally be applied to high-speed drive shafts.

[0003] Chinese Patent Publication No. CN203421079U discloses a diaphragm coupling, which includes a shaft body. Front and rear half couplings are provided at both ends of the shaft body. A cylindrical shape protruding outward is provided between the front and rear half couplings. Mounting holes for fitting and installing diaphragms are provided on the front and rear half couplings. The diaphragms are installed between the front and rear half couplings in a staggered manner through bolts.

[0004] In the diaphragm of the above patent, the connection and fixation are carried out by means of bolts plus nuts, and U-shaped grooves are provided on both side joints for the installation of nuts. If the U-shaped grooves are opened smaller, the nuts cannot be screwed in normally, and it is not convenient to take out the nuts after screwing; and after the coupling bears the radial force, the bolts directly transmit the radial force to the diaphragm. After the diaphragm bears too much stress, the service life of the coupling will be greatly reduced. Summary of the Utility Model

[0005] The purpose of the utility model is to provide a diaphragm-type high-torque, high-speed, flexible and high-precision spindle coupling device. One end of the bolt connecting the diaphragm is threadedly connected to the side joint, and the other end is immersed in the counterbore. When the coupling bears the radial force, the stress points of the bolts connecting the diaphragms are mainly the two side joints, and the stress generated on the diaphragm is very small. Therefore, the overall service life of the coupling is effectively improved, so as to solve the technical problems raised in the above background technique.

[0006] To achieve the above purpose, the utility model provides the following technical solutions:

[0007] A diaphragm-type high-torque, high-speed, flexible and high-precision spindle coupling device includes a first coupling side joint and a second coupling side joint, and a diaphragm is provided between the first coupling side joint and the second coupling side joint;

[0008] The first coupling side section and the second coupling side section are composed of the same structure and are symmetrically arranged; the first coupling side section and the second coupling side section have a side section body, and a plurality of disassembly grooves are annularly and penetratingly formed on the outer side of the side section body, and a plurality of counterbore grooves are annularly and arrayedly formed on the inner side; a plurality of threaded holes are further formed on the inner side of the side section body.

[0009] As a further technical solution of the present utility model, the disassembly grooves and the counterbore grooves are coaxially arranged.

[0010] As a further technical solution of the present utility model, one end of the side section body is integrally arranged, and the other end is split-type arranged.

[0011] As a further technical solution of the present utility model, locking grooves for facilitating the installation of locking bolts are further formed on the side section body.

[0012] As a further technical solution of the present utility model, the diaphragm is hexagonal, and six through holes are formed along the six corners of the diaphragm, and an inner bolt is arranged in each through hole.

[0013] As a further technical solution of the present utility model, the setting directions of every two adjacent inner bolts are opposite.

[0014] Compared with the prior art, the beneficial effects of the present utility model are:

[0015] 1. In the present utility model, the diaphragm is made of stainless steel and is stacked and used in multiple sheets, having high elasticity and torsional stiffness, capable of providing reliable power transmission and positioning functions. The diaphragm can absorb vibration and shock and compensate for radial, angular, and axial deviations, effectively protecting other mechanical components and prolonging the service life of the coupling;

[0016] 2. In the present utility model, one end of the inner bolt is threadedly connected to the side section, and the other end is clamped to the side section through the counterbore groove. When the coupling bears radial force, the main stress points at this time are the two side sections, and the stress generated on the diaphragm is very small. Therefore, the overall service life of the coupling is effectively improved;

[0017] 3. In the present utility model, the side section body is used in cooperation with the locking bolt, and the coupling can be quickly fixed to the shaft. The above connection method with the shaft is simple, efficient, and has great transmission stability and accuracy. Description of the Drawings

[0018] Figure 1 is a three-dimensional structural schematic diagram of the present utility model.

[0019] Figure 2 is in the present utility model Figure 1 front view.

[0020] Figure 3 It is the schematic diagram of the split structure in the present utility model. Figure 1

[0021] Figure 4 It is the schematic diagram of the structure of the side joint in the present utility model.

[0022] Figure 5 It is in the present utility model Figure 4 schematic diagram of another perspective.

[0023] In the figure: 1 - coupling side joint one, 2 - coupling side joint two, 3 - locking bolt, 4 - diaphragm, 5 - inner bolt,

[0024] 11 - side joint body, 12 - outer countersunk bolt hole, 13 - locking groove, 14 - counterbore groove, 15 - threaded hole. Specific embodiments

[0025] Next, the technical solutions in the embodiments of the present utility model will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all the embodiments. Based on the embodiments in the present utility model, all other embodiments obtained by those of ordinary skill in the art without making creative efforts shall fall within the protection scope of the present utility model.

[0026] Please refer to Figures 1-5 , in the embodiments of the present utility model, a diaphragm - type high - torque high - speed flexible high - precision spindle coupling device includes a coupling side joint one 1 and a coupling side joint two 2, and a diaphragm 4 is provided between the coupling side joint one 1 and the coupling side joint two 2;

[0027] The coupling side joint one 1 and the coupling side joint two 2 are composed of the same structure and are symmetrically arranged; the coupling side joint one 1 and the coupling side joint two 2 have a side joint body 11, and a plurality of disassembly grooves 12 are annularly and penetratingly opened on the outer side of the side joint body 11, and a plurality of counterbore grooves 14 are annularly and array - type opened on the inner side; a plurality of threaded holes 15 are also opened on the inner side of the side joint body 11.

[0028] ​By adopting the above technical solution, when assembling the coupling, first divide the six inner bolts 5 into two groups. After all the inner bolts 5 are inserted into the diaphragm 4, the threaded ends of three of the inner bolts 5 are threadedly connected to the threaded holes 15 on the coupling side joint two 2, and the nuts are placed in the counterbore grooves 14 on the coupling side joint one 1; the threaded ends of the other three inner bolts 5 are threadedly connected to the threaded holes 15 on the coupling side joint one 1, and the nuts are placed in the counterbore grooves 14 on the coupling side joint two 2; then all the inner bolts 5 are locked and fixed by passing the hexagon socket head bolts through the disassembly grooves 12, thereby realizing the connection and fixation of the coupling side joint one 1, the coupling side joint two 2 and the diaphragm 4; this way of embedding and installing the bolts effectively protects the bolts from being damaged and is very convenient for disassembly and assembly.

[0029] Furthermore, one end of the inner bolt 5 is threadedly connected to the side joint, and the other end is clamped to the side joint through the counterbore groove 14. When the coupling bears radial force, the main stress points at this time are the two side joints, and the stress generated on the diaphragm is very small. Therefore, the overall service life of the coupling is effectively improved.

[0030] In this embodiment, the disassembly groove 12 and the counterbore groove 14 are coaxially arranged.

[0031] By adopting the above technical solution, the setting of the disassembly groove 12 facilitates the disassembly, locking and fixation of the embedded inner bolts 5.

[0032] In this embodiment, one end of the side joint body 11 is integrally arranged, and the other end is split. The side joint body 11 is also provided with a locking groove 13 for facilitating the installation of the locking bolt 3.

[0033] By adopting the above technical solution, the cooperation of the side joint body 11 and the locking bolt 3 can quickly realize the fixation of the coupling and the shaft. The above connection method with the shaft is simple, efficient, and has greater transmission stability and accuracy.

[0034] In this embodiment, the diaphragm 4 is hexagonal, and six through holes are provided along the six corners of the diaphragm 4. Each through hole is provided with an inner bolt 5. The setting directions of every two adjacent inner bolts 5 are opposite.

[0035] By adopting the above technical solution, the diaphragm 4 is made of stainless steel and is stacked and used by multiple diaphragms. It has high elasticity and torsional stiffness, can provide reliable power transmission and positioning functions. The diaphragm can absorb vibration and shock and compensate for radial, angular and axial deviations, effectively protecting other mechanical components and extending the service life of the coupling;

[0036] The machining accuracy of the side joint is below grade 6, and the fit clearance is small. The gain of the servo motor is improved by the vibration damping of the high torsional rigidity and elastic metal elements.

[0037] This coupling is mainly applicable to the shafting transmission in working conditions with high temperature, high speed and corrosive media. The working environment temperature is -30°C to +120°C, the transmitted nominal torque is 60 - 800 Nm, and the allowable rotational speed is 8000 - 18000 r / min.

[0038] The working principle of the present utility model is as follows: When assembling the coupling, first divide the six inner bolts 5 into two groups. After all the inner bolts 5 are inserted into the diaphragm 4, the threaded ends of three of the inner bolts 5 are threadedly connected to the threaded holes 15 on the coupling side joint two 2, and the nuts are placed in the counterbore grooves 14 on the coupling side joint one 1; the threaded ends of the other three inner bolts 5 are threadedly connected to the threaded holes 15 on the coupling side joint one 1, and the nuts are placed in the counterbore grooves 14 on the coupling side joint two 2; then all the inner bolts 5 are locked and fixed by passing through the disassembly groove 12 with hexagon socket head cap screws, thereby realizing the connection and fixation of the coupling side joint one 1, the coupling side joint two 2 and the diaphragm 4; this way of embedding and installing the bolts effectively protects the bolts from being damaged and is very convenient for disassembly and assembly.

[0039] For those skilled in the art, it is obvious that the present utility model is not limited to the details of the above exemplary embodiments, and without departing from the spirit or basic characteristics of the present utility model, the present utility model can be implemented in other specific forms. Therefore, in any aspect, the embodiments should be regarded as exemplary and non-limiting. The scope of the present utility model is defined by the appended claims rather than the above description. Therefore, all changes falling within the meaning and scope of the equivalent elements of the claims are intended to be included in the present utility model. Any reference signs in the claims should not be regarded as limiting the claimed rights.

[0040] In addition, it should be understood that although this specification is described according to the embodiments, not every embodiment only contains an independent technical solution. This narrative way of the specification is only for clarity. Those skilled in the art should regard the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

Claims

1. A diaphragm-type high-torque, high-speed, flexible and high-precision spindle coupling device, characterized in that: It includes a coupling side section one (1) and a coupling side section two (2), and a diaphragm (4) is provided between the coupling side section one (1) and the coupling side section two (2); The coupling side section one (1) and the coupling side section two (2) are composed of the same structure and are symmetrically arranged; the coupling side section one (1) and the coupling side section two (2) have a side section body (11), and a plurality of disassembly grooves (12) are annularly and penetratingly opened on the outer side of the side section body (11), and a plurality of counterbore grooves (14) are annularly and arrayedly opened on the inner side; a plurality of threaded holes (15) are also opened on the inner side of the side section body (11).

2. The diaphragm-type high-torque, high-speed, flexible, and high-precision spindle coupling device according to claim 1, characterized in that: The disassembly grooves (12) and the counterbore grooves (14) are coaxially arranged.

3. The diaphragm-type high-torque high-speed flexible high-precision spindle coupling device according to claim 1, wherein: One end of the side section body (11) is integrally arranged, and the other end is split.

4. The diaphragm-type high-torque high-speed flexible high-precision spindle coupling device according to claim 3, wherein: A locking groove (13) for facilitating the installation of the locking bolt (3) is also opened on the side section body (11).

5. The diaphragm-type high-torque, high-speed, flexible, and high-precision spindle coupling device according to claim 1, characterized in that: The diaphragm (4) is hexagonal, and six through holes are opened along the six corners of the diaphragm (4), and an inner bolt (5) is provided in each through hole.

6. The diaphragm-type high-torque high-speed flexible high-precision spindle coupling device according to claim 5, wherein: The setting directions of every two adjacent inner bolts (5) are opposite.

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