Plum blossom elastic structure for coupler

Abstract

The utility model discloses a plum blossom elastic structure for a coupler, and relates to the technical field of couplings, in particular to the plum blossom elastic structure for the coupler, which comprises an elastic component, the elastic component comprises at least one damping fin and at least two elastic bodies, the whole damping fin is in a plum blossom shape, and the whole elastic bodies are in a plum blossom shape. The two side walls of the damping fin are bonded with the two elastic bodies respectively, and the damping fin is clamped and fixed by the two adjacent elastic bodies; due to the fact that the damping fins and the damping holes are arranged in the elastic component and filled with the damping materials, the plum blossom elastic structure can effectively absorb and dissipate vibration energy under severe working conditions, and the aging speed of the materials is reduced. Compared with the prior art, according to the design, the durability of the coupler in high-temperature, high-corrosion and other environments is remarkably improved, the service life of the coupler is prolonged, the maintenance cost and downtime of equipment are reduced, and long-term stable operation of mechanical equipment is ensured.

Description

TECHNICAL FIELD

[0001] The utility model relates to a coupling technical field, concretely is a plum blossom elastic structure for coupling. BACKGROUND

[0002] In modern industrial production, as an important part of connecting different rotating shaft systems, couplings are widely used in various mechanical equipment for power transmission, axial, radial and angular displacement compensation and shock absorption. The plum blossom coupling has good damping performance and high compensation ability due to its unique plum blossom elastic element design, and is widely used in petroleum chemical industry, mining machinery, general machinery and other fields. However, the existing plum blossom coupling still has some technical problems to be solved in actual use.

[0003] In the utility model patent with publication number CN217002770U, a plum blossom elastic key and a plum blossom coupling are disclosed. The plum blossom elastic key includes a plurality of elastic blocks and a plurality of elastic connection structures. The elastic block includes a key tooth and a connecting part. The connecting parts of adjacent two elastic blocks are connected by the elastic connection structure to form a circular ring. Although this design improves the aging resistance and adaptability of the plum blossom coupling to some extent, it still has the following problems in actual application: the plum blossom elastic key in this patent mainly relies on the material properties of the elastic block and the elastic connection structure to realize the damping and buffering functions. However, under harsh working conditions such as high temperature and high corrosion, the aging rate of the material increases, which shortens the service life of the coupling and affects the normal operation of the equipment. The existing plum blossom coupling lacks effective damping structure during power transmission, which makes it difficult to effectively absorb and dissipate vibration energy. This not only causes large vibration and noise during equipment operation, but also adversely affects the transmission accuracy and stability of mechanical equipment, reducing the service life and working efficiency of the equipment.

[0004] In view of the problems existing in the prior art, the utility model provides a plum blossom elastic structure for coupling, which aims to solve the problems of short service life and insufficient damping performance of the existing plum blossom coupling under harsh working conditions through innovative design. UTILITY MODEL CONTENTS

[0005] (I) Technical problems solved

[0006] In view of the deficiencies of the prior art, the utility model provides a plum blossom elastic structure for coupling, which solves the problems raised in the background technology.

[0007] (II) Technical solutions

[0008] To achieve the above object, the utility model discloses a plum blossom elastic structure for coupling, which is characterized by the following technical scheme: a plum blossom elastic structure for coupling includes an elastic component, the elastic component includes at least one damping sheet and at least two elastic bodies, the damping sheet is in the shape of plum blossom as a whole, the elastic body is in the shape of plum blossom as a whole, the two side walls of the damping sheet are respectively bonded with the two elastic bodies, and the damping sheet is clamped and fixed by the two adjacent elastic bodies.

[0009] Optionally, a plurality of damping holes are formed in the damping sheet and the elastic body, and the damping holes in the damping sheet and the elastic body are in communication with each other.

[0010] Optionally, the damping holes are filled with damping material, and the damping material is bonded with the damping sheet and the elastic body, respectively.

[0011] Optionally, the damping material is one of rubber particles and viscous fluid.

[0012] Optionally, the utility model further includes two metal claw plates, the two metal claw plates are inserted into each other, the elastic component is installed at the insertion position of the two metal claw plates, and the two outer side walls and the four peripheral edge side walls of the elastic component are respectively abutted with the two metal claw plates.

[0013] Optionally, the metal claw plate includes a disc part, a shaft part and a plurality of claw teeth, each claw tooth is arranged and fixed on one side wall of the disc part in a ring shape, the shaft part is fixedly installed on the two side walls of the disc part, the shaft part is in a cylindrical structure, and a threaded hole is formed in the end side wall of the shaft part away from the disc part.

[0014] Optionally, the two outer side walls of the elastic component are respectively abutted with the disc parts of the two metal claw plates, and the four peripheral edge side walls of the elastic component are respectively abutted with the claw teeth of the two metal claw plates.

[0015] (Three) beneficial effects

[0016] The utility model provides a plum blossom elastic structure for coupling, which has the following beneficial effects:

[0017] 1. The plum blossom elastic structure for coupling is provided with a damping sheet and a damping hole in the elastic component, and filled with damping material, the plum blossom elastic structure of the utility model can effectively absorb and dissipate vibration energy under harsh working conditions, and reduce the aging speed of the material. Compared with the prior art, this design significantly improves the durability of the coupling in high temperature, high corrosion and other environments, prolongs the service life of the coupling, reduces the maintenance cost and downtime of the equipment, and ensures the long-term stable operation of the mechanical equipment.

[0018] 2. The plum blossom elastic structure of the utility model realizes effective absorption and dissipation of vibration energy through the damping material in the damping sheet and the damping hole. In the process of equipment operation, the relative movement between the damping sheet and the elastic body and the shear deformation of the damping material can generate a large damping force, thereby significantly reducing the vibration and noise level of the equipment. This not only improves the operation stability of the equipment, but also improves the transmission accuracy and working efficiency of the equipment, and provides a more reliable transmission solution for modern industrial production. BRIEF DESCRIPTION OF DRAWINGS

[0019] In order to more clearly illustrate the technical scheme in the embodiments of the utility model or the prior art, the drawings needed to be used in the embodiment or the prior art description will be briefly introduced below. Obviously, the drawings in the following description are only embodiments of the utility model, and those skilled in the art can obtain other drawings according to the provided drawings without creative labor.

[0020] Figure 1 It is a three-dimensional structure schematic diagram of the plum blossom elastic structure for a coupling of the utility model;

[0021] Figure 2 It is an explosion view of the plum blossom elastic structure for a coupling of the utility model;

[0022] Figure 3 It is a three-dimensional structure schematic diagram of the metal claw disc in the plum blossom elastic structure for a coupling of the utility model;

[0023] Figure 4 It is a three-dimensional structure schematic diagram of the metal claw disc and the second elastic body in the plum blossom elastic structure for a coupling of the utility model in the assembled state;

[0024] Figure 5 It is a three-dimensional structure schematic diagram of the first elastic body in the plum blossom elastic structure for a coupling of the utility model;

[0025] Figure 6 It is a three-dimensional structure schematic diagram of the damping sheet in the plum blossom elastic structure for a coupling of the utility model;

[0026] Figure 7 It is a sectional structure schematic diagram of the damping sheet in the plum blossom elastic structure for a coupling of the utility model.

[0027] In the drawing: 1, metal claw disc; 101, disc part; 102, claw tooth; 103, shaft rod part; 104, threaded hole; 2, first elastic body; 3, damping sheet; 4, second elastic body; 5, damping hole. DETAILED DESCRIPTION

[0028] The technical solutions of the utility model will be described clearly and completely in connection with the drawings. In the description of the utility model, it needs to be explained that the orientation or position relation indicated by the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer" and the like is the orientation or position relation based on the drawings shown, and is only for the convenience of describing the utility model and simplifying the description, and therefore cannot be understood as the limitation on the utility model. In addition, the terms "first", "second", "third" are only for the purpose of description, and cannot be understood as the indication or implication.

[0029] In the description of the utility model, it needs to be explained that, unless otherwise explicitly specified and limited, the terms "mounting", "connecting", "connection" should be understood in a broad sense, for example, it can be fixed connection, or detachable connection, or integrally connected; it can be mechanical connection, or electrical connection; it can be directly connected, or indirectly connected through intermediate medium, or the communication inside two elements. For ordinary skilled in the art, the specific meaning of the above terms in the utility model can be understood according to the specific circumstances. Obviously, the described embodiments are only a part of the embodiments of the utility model, not all the embodiments.

[0030] Please refer to Figures 1 to 7 The utility model provides technical scheme: a plum blossom elastic structure for coupling, including elastic component, two metal claw disc 1, two metal claw disc 1 mutually insert, elastic component installs at the insert of two metal claw disc 1, and the two outer side walls of elastic component, four circumferential edge side walls are all respectively with two metal claw disc 1 abut.

[0031] Specifically, the metal claw disc 1 includes a disc portion 101, a shaft portion 103, and a plurality of claw teeth 102. Each claw tooth 102 is arranged in a ring shape and fixedly installed on one side wall of the disc portion 101. The shaft portion 103 is fixedly installed on both side walls of the disc portion 101, and the shaft portion 103 is in a cylindrical structure. A threaded hole 104 is formed on an end side wall of the shaft portion 103 away from the disc portion 101. The threaded hole 104 is used for conveniently installing the shaft portion 103 on a power transmission shaft such as a transmission shaft or a motor output shaft by means of bolts.

[0032] Further specifically, the two outer side walls of the elastic component abut against the disc portions 101 of the two metal claw discs 1, and the four circumferential edge side walls of the elastic component abut against the claw teeth 102 of the two metal claw discs 1.

[0033] The elastic component is in the shape of a plum blossom as a whole. The elastic component comprises at least one damping sheet 3, at least two elastic bodies, the damping sheet 3 is in the shape of a plum blossom as a whole, the elastic bodies are in the shape of a plum blossom as a whole, the two side walls of the damping sheet 3 are respectively bonded with the two elastic bodies, and the damping sheet 3 is clamped and fixed by the two adjacent elastic bodies.

[0034] The elastic body comprises but is not limited to one of natural rubber, polyurethane, nylon, rubber-plastic composite material and the like. The damping sheet 3 comprises but is not limited to one of nitrile rubber, hydrogenated nitrile rubber, polyamide, fiber-reinforced composite material (adding an appropriate amount of fiber material such as glass fiber, carbon fiber, aramid fiber and the like in a rubber or plastic matrix), high-damping alloy (such as lead-antimony alloy, zinc-aluminum alloy, etc., having high damping coefficient and good mechanical properties) and the like. The lead-antimony alloy has excellent damping performance and can effectively absorb and dissipate vibration energy in a wide frequency range; the zinc-aluminum alloy has good casting performance and damping characteristics. The fiber-reinforced composite material can improve the strength and stiffness of the material, and also improve the damping performance. The interaction and friction between the fiber and the matrix can increase the internal friction of the material, so that the composite material can attenuate energy more quickly when subjected to vibration. Polyamide (such as nylon) has high strength, good toughness, wear resistance and good self-lubricating property. The flexibility of its molecular chain is good, which can produce damping effect to a certain extent. By blending modification with other materials or adding damping additives, etc., the damping characteristics can be further improved. Hydrogenated nitrile rubber is a hydrogenated product of nitrile rubber, which has excellent ozone resistance, heat resistance, weather resistance and good mechanical properties. Its damping characteristics are better than those of nitrile rubber, and it can still maintain good damping effect in harsh environments such as high temperature and high ozone concentration. Nitrile rubber is a synthetic rubber copolymerized by butadiene and acrylonitrile, which has good oil resistance, wear resistance and high strength. Its damping performance can maintain good stability in oil medium, and can provide stable damping effect in a wide temperature range.

[0035] The technical solution is implemented by taking one damping sheet 3 and two elastic bodies as an example. The two elastic bodies are a first elastic body 2 and a second elastic body 4. The first elastic body 2, the damping sheet 3 and the second elastic body 4 are arranged in sequence, and the first elastic body 2 and the second elastic body 4 clamp and fix the damping sheet 3. The damping sheet 3 and the first elastic body 2 and the second elastic body 4 are fixed by bonding.

[0036] A special damping sheet 3 is arranged between the elastic bodies, which can be made of the high-damping material mentioned above, and its shape and size should match the contact surface of the elastic bodies. The damping sheet 3 can be installed between the elastic bodies by adhesives or mechanical fixation. During the operation of the coupling, the relative movement between the damping sheet 3 and the elastic bodies will generate damping force to absorb vibration energy. In order to improve the damping effect, some fine textures or concave-convex structures can be processed on the surface of the damping sheet 3 to increase the friction force and contact area between the damping sheet 3 and the elastic bodies.

[0037] Meanwhile, in actual implementation, both the damping sheet 3 and the elastic body can be multiple, and the damping sheet 3 and the elastic body are arranged alternately. By arranging and stacking multiple damping sheets 3 and elastic bodies along the axial direction of the coupling, since there is a difference in stiffness between the damping sheet 3 and the elastic body, when the shaft is displaced, the damping sheets 3 or elastic bodies of different stiffness and positions will participate in compensation in turn, so as to realize greater compensation amount and higher compensation accuracy, achieve a stepped or multi-stage compensation effect, improve the compensation ability, and strengthen the damping characteristics.

[0038] Specifically, a plurality of damping holes 5 are formed on the damping sheet 3 and the elastic body, and the damping holes 5 on the damping sheet 3 and the elastic body are in communication with each other. The damping holes 5 are filled with damping material, and the damping material is bonded with the damping sheet 3 and the elastic body, respectively. The damping material is one of rubber particles and viscous fluid.

[0039] The damping holes 5 can be filled with damping material such as viscous fluid and rubber particles. When the elastic body is deformed, the damping material in the damping holes 5 will be extruded and sheared to generate damping force and consume vibration energy. The size, position and number of the damping holes 5 need to be optimized according to the structure and working requirements of the elastic body or the damping sheet 3 to achieve the best damping effect. The viscous fluid can be PIB (polyisobutylene) fluid, etc. PIB is a colorless and odorless liquid or semi-solid, which has good thermal stability, chemical stability and oxidation resistance. It has high viscosity and can provide large damping force.

[0040] Two metal claw discs 1 play a role of transmitting torque. Each metal claw disc 1 has a plurality of protruding claw teeth 102 which are engaged with petal portions of the elastic member in the shape of a quincunx, thereby achieving transmission of torque. The metal claw disc 1 is usually made of a hard material such as steel and has high strength and rigidity, and is capable of bearing a large torque and axial force. The elastic body is in the shape of a quincunx and has a plurality of petal-shaped elastic blocks (i.e. petal portions) which are engaged with the claw teeth 102 of the two metal claw discs 1. The main role of the quincunx-shaped elastic body and the damping sheet 3 is to buffer and dampen, and is capable of absorbing vibration and impact energy and reducing vibration and noise during operation of the equipment. At the same time, it is also capable of compensating for relative displacement between the two shafts, including axial displacement, radial displacement and angular displacement.

[0041] The above merely describes a preferred specific embodiment of the present application, but the scope of protection of the present application is not limited thereto, and any person skilled in the art, within the technical scope disclosed by the present application, can make equivalent replacements or changes to the technical scheme and the inventive concept of the present application, and all of the above should be covered within the scope of protection of the present application.

Claims

1. A plum blossom elastic structure for couplings, characterized in that: The device includes an elastic component, which includes at least one damping sheet (3) and at least two elastic bodies. The damping sheet (3) is generally shaped like a plum blossom, and the elastic bodies are generally shaped like a plum blossom. The two side walls of the damping sheet (3) are respectively bonded to the two elastic bodies, and the damping sheet (3) is clamped and fixed by the two adjacent elastic bodies.

2. The plum blossom elastic structure for a coupling according to claim 1, characterized in that: Both the damping sheet (3) and the elastic body are provided with multiple damping holes (5), and the damping holes (5) on the damping sheet (3) and the damping holes (5) on the elastic body are connected to each other.

3. The plum blossom elastic structure for a coupling according to claim 2, characterized in that: The damping hole (5) is filled with damping material, and the damping material is bonded to the damping sheet (3) and the elastomer respectively.

4. The plum blossom elastic structure for a coupling according to claim 3, characterized in that: The damping material is one of rubber particles or viscous fluid.

5. The plum blossom elastic structure for a coupling according to claim 1, characterized in that: It also includes two metal claw disks (1), which are inserted into each other. The elastic component is installed at the insertion point of the two metal claw disks (1), and the two outer sidewalls and four peripheral sidewalls of the elastic component abut against the two metal claw disks (1) respectively.

6. The plum blossom elastic structure for a coupling according to claim 5, characterized in that: The metal claw disk (1) includes a disk portion (101), a shaft portion (103), and multiple claw teeth (102). Each of the claw teeth (102) is arranged in a ring and fixedly installed on one side wall of the disk portion (101). The shaft portion (103) is fixedly installed on both side walls of the disk portion (101), and the shaft portion (103) has a cylindrical structure. A threaded hole (104) is provided on the side wall of the shaft portion (103) away from the disk portion (101).

7. The plum blossom elastic structure for a coupling according to claim 6, characterized in that: The two outer sidewalls of the elastic component abut against the disk portion (101) of the two metal claw disks (1), and the four peripheral sidewalls of the elastic component abut against the claw teeth (102) of the two metal claw disks (1).

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