High-speed flexible coupling

Abstract

The utility model discloses a high-speed flexible coupling, and particularly relates to the technical field of flexible couplings, the high-speed flexible coupling comprises a first shaft hub, a middle body and a second shaft hub, the middle body is arranged between the first shaft hub and the second shaft hub, and the first shaft hub, the second shaft hub and the middle body are all provided with first installation holes which are communicated. The outer wall of the first shaft hub and the outer wall of the second shaft hub are each provided with a flexible open groove and a locking open groove, the flexible open grooves and the locking open grooves communicate with the first mounting holes, and flexible diaphragm sets are arranged between the middle body and the first shaft hub and between the middle body and the second shaft hub. The coupler is formed by the first shaft hub, the second shaft hub, the middle body and the two flexible diaphragm sets, the flexible open grooves formed in the first shaft hub and the second shaft hub can compensate the rotation angle error between the coupler and the connecting shaft, and therefore the flexibility and dynamic balance of the coupler in the high-speed rotation process can be improved.

Description

Technical Field

[0001] The utility model relates to the technical field of flexible couplings, in particular to a high-speed flexible coupling. Background Art

[0002] A high-speed flexible coupling is a mechanical device used to connect two shafts and transmit torque in high-speed rotating equipment. It can absorb eccentricity, deflection and axial deviation between the axis lines, thereby protecting the mechanical equipment from excessive dynamic impact. The main types of existing high-speed flexible couplings are: diaphragm-type flexible couplings, cross-type flexible couplings, groove-type flexible couplings, claw-type flexible couplings, etc. Among them, the diaphragm-type flexible coupling is a high-performance coupling that uses the elastic deformation of the metal diaphragm to compensate for the relative displacement between the two connected shafts. It is widely used in high-speed, high-temperature and corrosive working environments, does not require lubrication, and has the advantages of compact structure, high strength, and long service life. For example, a diaphragm-type large compensation coupling with a prior art publication number of CN209309166U.

[0003] However, the above-mentioned prior art still has the following problems when in use: the shaft hubs on both sides of the existing diaphragm-type flexible coupling are usually integrally formed, and their angles are prone to errors during high-speed rotation, which will reduce the flexibility of the coupling and make it unsuitable for high-speed rotation. Based on this, the utility model provides a high-speed flexible coupling. Utility Model Content

[0004] In order to overcome the above-mentioned defects of the prior art, the utility model provides a high-speed flexible coupling. The utility model constitutes a coupling through a first hub, a second hub, an intermediate body and two groups of flexible diaphragm groups. The flexible grooves arranged on the first hub and the second hub can compensate for the angular error of rotation between the coupling and the connecting shaft, thereby improving the flexibility and dynamic balance of the coupling during high-speed rotation, so as to solve the problems arising from the above-mentioned background technology.

[0005] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a high-speed flexible coupling, comprising a first hub, an intermediate body and a second hub, the intermediate body is arranged between the first hub and the second hub, the first hub, the second hub and the intermediate body are all provided with a connected mounting hole, the outer walls of the first hub and the second hub are both provided with flexible grooves and locking grooves, the flexible grooves and locking grooves are both connected to the mounting hole, a flexible diaphragm group is arranged between the intermediate body and the first hub and the second hub, the first hub, the second hub, the flexible diaphragm group and the intermediate body are fixed together by a plurality of connecting screws, the flexible diaphragm group includes a plurality of diaphragms, and the plurality of diaphragms are stacked together from left to right.

[0006] In a preferred embodiment, two supporting spacers are sleeved on each connecting screw, and the supporting spacers are arranged on both sides of the flexible diaphragm group. The supporting spacers can be used to position and fix the diaphragm installation, thereby improving the firmness of the diaphragm.

[0007] In a preferred embodiment, each diaphragm is provided with a second mounting hole connected to the first mounting hole on one side for mounting the connecting shaft.

[0008] In a preferred embodiment, each diaphragm is provided with a plurality of fixing holes, and a plurality of connecting screws respectively penetrate through the plurality of fixing holes, so as to firmly fix the flexible diaphragm group together with the first hub, the second hub and the intermediate body.

[0009] In a preferred embodiment, the four corners of the outer side wall of each diaphragm are configured as arc inner concave surfaces to improve the dynamic balance of the coupling.

[0010] In a preferred embodiment, the nut ends of each two adjacent connecting screws 1 are in opposite directions, and connecting screws 2 are connected to the first hub and the second hub for firmly fixing the first hub and the connecting shaft, and the second hub and the connecting shaft together.

[0011] In a preferred embodiment, the first hub, the intermediate body, the second hub, the diaphragm, the first connecting screw, the second connecting screw and the supporting spacer are all made of aluminum alloy material, so that the entire coupling is light in weight, high in strength and rigidity, and thus more suitable for high-speed rotation.

[0012] Technical effects and advantages of the utility model:

[0013] 1. The utility model comprises a coupling through a first hub, a second hub, an intermediate body and two sets of flexible diaphragm groups. The flexible slots arranged on the first hub and the second hub can compensate for the angular error of rotation between the coupling and the connecting shaft, thereby improving the flexibility and dynamic balance of the coupling during high-speed rotation;

[0014] 2. The flexible diaphragm group is composed of multiple diaphragms stacked together, which is not easy to deform or break, and has better elastic deformation performance, thereby improving the flexibility and rigidity of the coupling. In addition, the nut ends of two adjacent connecting screws are in opposite directions, which can not only improve the connection firmness between the flexible diaphragm group and the intermediate body, the first hub, and the second hub, but also improve the dynamic balance of the coupling;

[0015] 3. The whole structure of the coupling is made of aluminum alloy material. Aluminum alloy material is light in weight, high in strength, good in rigidity and good in corrosion resistance. Therefore, this coupling is more suitable for high-speed rotation and has a long service life. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1It is a schematic diagram of the overall structure of the utility model;

[0017] Figure 2 It is a side plan view of the overall structure of the utility model;

[0018] Figure 3 It is a cross-sectional view of the overall structure of the utility model;

[0019] Figure 4 for Figure 3 Side plan view of

[0020] Figure 5 This is a structural diagram of the flexible diaphragm assembly of the utility model;

[0021] Figure 6 It is a cross-sectional view of the diaphragm and the connecting screw of the utility model;

[0022] Figure 7 It is a schematic diagram of the diaphragm of the utility model.

[0023] The reference numerals are: 1, first hub; 2, intermediate body; 3, second hub; 4, first mounting hole; 5, flexible slot; 6, locking slot; 7, flexible diaphragm assembly; 8, first connecting screw; 9, second connecting screw;

[0024] 701, diaphragm; 702, supporting spacer; 703, second mounting hole; 704, fixing hole; 705, concave surface inside the arc. DETAILED DESCRIPTION

[0025] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0026] Refer to the instruction manual Figure 1-7 The utility model provides a high-speed flexible coupling, including a first shaft hub 1, an intermediate body 2 and a second shaft hub 3, wherein the intermediate body 2 is arranged between the first shaft hub 1 and the second shaft hub 3, wherein the first shaft hub 1, the second shaft hub 3 and the intermediate body 2 are all provided with a connecting mounting hole 4, wherein the outer walls of the first shaft hub 1 and the second shaft hub 3 are both provided with a flexible slot 5 and a locking slot 6, wherein the flexible slot 5 and the locking slot 6 are both connected with the mounting hole 4, wherein the first shaft hub 1 and the second shaft hub 3 are both connected with a connecting screw 2 9, which is used to firmly fix the first shaft hub 1 and the connecting shaft, and the second shaft hub 3 and the connecting shaft together;

[0027] A flexible diaphragm group 7 is provided between the intermediate body 2 and the first shaft hub 1 and the second shaft hub 3. The first shaft hub 1, the second shaft hub 3, the flexible diaphragm group 7 and the intermediate body 2 are fixed together by a plurality of connecting screws 8;

[0028] The first hub 1, the intermediate body 2, the second hub 3, the diaphragm 701, the connecting screw 1 8, the connecting screw 2 9 and the supporting spacer 702 are all made of aluminum alloy, so that the entire coupling is light in weight, high in strength and rigidity, and is more suitable for high-speed rotation.

[0029] When in use, first install the first hub 1 and the second hub 3 on the two connecting shafts respectively, and tighten the connecting screws 9 to firmly fix the first hub 1 and the connecting shaft, and the second hub 3 and the connecting shaft together, and then use multiple connecting screws 8 to install the two sets of flexible diaphragm groups 7 to both sides of the intermediate body 2. Specifically, first use multiple connecting screws 8 to firmly fix the multiple flexible diaphragm groups 7 and the intermediate body 2 together, and then place the intermediate body 2 and the flexible diaphragm group 7 between the first hub 1 and the second hub 3, and use the remaining connecting screws 8 to firmly fix the intermediate body 2 and the first hub 1 and the second hub 3 together. It is worth noting that the nut ends of each two adjacent connecting screws 8 are in opposite directions (such as Figure 5 As shown), it can not only improve the firmness between the flexible diaphragm group 7 and the intermediate body 2, the first hub 1, and the second hub 3, but also improve the dynamic balance of the coupling;

[0030] Flexible slots 5 are provided on the first hub 1 and the second hub 3. The flexible slots 5 can compensate for angular errors, thereby improving the flexibility and dynamic balance of the coupling during high-speed rotation. The first hub 1, the intermediate body 2, the second hub 3, the flexible diaphragm group 7, the connecting screw 1 8, the connecting screw 2 9 and the supporting spacer 702 are all made of aluminum alloy material. The aluminum alloy material is light in weight, high in strength, good in rigidity and good in corrosion resistance. Therefore, the coupling is more suitable for high-speed rotation and has a longer service life.

[0031] Refer to the instruction manual Figure 1-7 The flexible diaphragm group 7 includes a plurality of diaphragms 701, which are stacked together from left to right. Two supporting spacers 702 are sleeved on each connecting screw 8. The supporting spacers 702 are arranged on both sides of the flexible diaphragm group 7. The supporting spacers 702 can be used to position and fix the diaphragms 701, thereby improving the firmness of the diaphragms 701.

[0032] In addition, a second mounting hole 703 connected to the first mounting hole 4 is provided on one side of each diaphragm 701 for mounting the connecting shaft, and a plurality of fixing holes 704 are provided on each diaphragm 701, and a plurality of connecting screws 8 respectively penetrate through the plurality of fixing holes 704 for firmly fixing the flexible diaphragm group 7 with the first shaft hub 1, the second shaft hub 3 and the intermediate body 2;

[0033] The four corners of the outer side wall of each diaphragm 701 are arranged as arc inner concave surfaces 705 to improve the dynamic balance of the coupling.

[0034] The flexible diaphragm group 7 is composed of multiple diaphragms 701 stacked together, which is not easy to deform or break. At the same time, the combination of multiple diaphragms 701 has better elastic deformation performance. Therefore, the flexibility and rigidity of the entire flexible diaphragm group 7 are better, which can improve the flexibility of the coupling. In addition, the mounting hole 703 in each diaphragm 701 is inclined 45 degrees in the horizontal direction, and the four corners of the outer wall of each diaphragm 701 are set as arc inner concave surfaces 705, so that the diaphragm 701 can be quickly reset when rotating, thereby improving the flexibility of the diaphragm 701 and thus improving the flexibility of the coupling.

[0035] Finally: The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present utility model should be included in the protection scope of the present utility model.

Claims

1. A high-speed flexible coupling, characterized in that: The invention comprises a first shaft hub (1), an intermediate body (2) and a second shaft hub (3), wherein the intermediate body (2) is arranged between the first shaft hub (1) and the second shaft hub (3), and the first shaft hub (1), the second shaft hub (3) and the intermediate body (2) are all provided with a connecting mounting hole (4); The outer walls of the first shaft hub (1) and the second shaft hub (3) are both provided with a flexible slot (5) and a locking slot (6), and the flexible slot (5) and the locking slot (6) are both connected to the first mounting hole (4); A flexible diaphragm group (7) is provided between the intermediate body (2) and the first shaft hub (1) and the second shaft hub (3); the first shaft hub (1), the second shaft hub (3), the flexible diaphragm group (7) and the intermediate body (2) are fixed together by a plurality of connecting screws (8); the flexible diaphragm group (7) includes a plurality of diaphragms (701), and the plurality of diaphragms (701) are stacked together in sequence from left to right.

2. A high-speed flexible coupling according to claim 1, characterized in that: Two supporting spacers (702) are sleeved on each connecting screw (8), and the supporting spacers (702) are arranged on both sides of the flexible diaphragm group (7).

3. A high-speed flexible coupling according to claim 1, characterized in that: Each diaphragm (701) is provided with a second mounting hole (703) on one side thereof, the second mounting hole being in communication with the first mounting hole (4).

4. A high-speed flexible coupling according to claim 1, characterized in that: Each diaphragm (701) is provided with a plurality of fixing holes (704), and a plurality of connecting screws (8) respectively penetrate through the plurality of fixing holes (704).

5. A high-speed flexible coupling according to claim 1, characterized in that: The four corners of the outer side wall of each diaphragm (701) are arranged as arc inner concave surfaces (705).

6. A high-speed flexible coupling according to claim 1, characterized in that: The nut ends of each two adjacent connecting screws (8) are in opposite directions, and connecting screws (9) are connected to the first shaft hub (1) and the second shaft hub (3).

7. A high-speed flexible coupling according to claim 6, characterized in that: The first shaft hub (1), the intermediate body (2), the second shaft hub (3), the diaphragm (701), the first connecting screw (8), the second connecting screw (9) and the supporting spacer (702) are all made of aluminum alloy material.

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