A multiple dry friction damping ring for gear vibration reduction

Abstract

The present application provides a multiple dry friction parent-child damping ring for gear vibration reduction, comprising: an outer damping ring, on whose annular body, an inner convex opening section including at least two outer damping ring holes and an outer damping ring flexible section providing elastic deformation are spaced apart, two adjacent inner convex opening sections form a groove at the outer damping ring flexible section, and an outer damping ring wedge is provided on one of the outer damping ring flexible sections; an inner damping ring, on whose annular body, an outer convex opening section including at least two inner damping ring holes and an inner damping ring flexible section providing elastic deformation are spaced apart, two adjacent outer convex opening sections form a groove at the inner damping ring flexible section, and an inner damping ring wedge is provided on one of the inner damping ring flexible sections; and a damping column; when in use, the inner damping ring is nested on the inner side of the outer damping ring, and the damping column is inserted into the outer damping ring hole and the inner damping ring hole, so that when the bevel gear vibrates, the vibration energy can be converted into the kinetic energy of the damping column and the friction energy consumption of the inner and outer damping rings.

Description

Technical Field

[0001] The present application relates to the technical field of gear transmission, and in particular to a multiple dry friction parent-child damping ring for gear vibration reduction. Background Art

[0002] Involute bevel gears, also called involute bevel gears, are widely used in printing equipment, automobile differentials, sluice gates, and can also be used in aerospace, locomotives, ships, power plants, steel mills, railway track inspection, etc. Compared with metal gears, bevel gears are economical, have long wear resistance and strong functionality. The main features of involute bevel gears are: 1) noise reduction and shock absorption; 2) long life and high load bearing capacity; 3) light weight and low cost; 4) easy to form and good lubricity. Although the meshing overlap of involute bevel gears is higher than that of spur gears, the meshing is relatively stable and the impact excitation level is low, but because this structure is often used in high-load, high-speed transmission systems, it is subjected to strong axial, circumferential, and radial periodic excitations during operation, so vibration fatigue failures often occur. Adding damping to the bevel gear structure is one of the effective means of gear structure vibration reduction.

[0003] Impact damping is a structural energy dissipation method. Impact damping can be obtained by setting up impact dampers in engineering. For example, sand, fine stone, lead shot or other metal blocks, and even hard alloys, can all be used as impact blocks to obtain impact damping. However, impact damping is rarely used in gear structures. Therefore, a damping method combining dry friction damping such as impact group damping ring is proposed. Summary of the invention

[0004] The purpose of the present application is to provide a multiple dry friction parent and child damping ring for gear vibration reduction, so as to solve or alleviate at least one problem in the background technology.

[0005] The technical solution of the present application is: a multiple dry friction mother-and-child damping ring for gear vibration reduction, wherein a damping ring mounting groove is provided on the web of the bevel gear, and the mother-and-child damping ring comprises:

[0006] An outer damping ring, which is in the shape of an open ring as a whole, and has an inner convex opening section including at least two outer damping ring holes and an outer damping ring flexible section providing elastic deformation, and two adjacent inner convex opening sections form a groove at the outer damping ring flexible section, and an outer damping ring wedge is provided on one of the outer damping ring flexible sections;

[0007] An inner damping ring, wherein the inner damping ring is in the shape of an annular ring with an opening as a whole, and an outward convex opening section including at least two inner damping ring holes and an inner damping ring flexible section providing elastic deformation are spaced apart on the annular main body of the inner damping ring, two adjacent outward convex opening sections form a groove at the inner damping ring flexible section, and an inner damping ring wedge is provided on one of the inner damping ring flexible sections;

[0008] Damping column;

[0009] When in use, the inner damping ring is nested on the inner side of the outer damping ring, the outward convex opening section of the inner damping ring is installed in the groove formed by the two adjacent inward convex opening sections of the outer damping ring, and the inward convex opening section of the outer damping ring is installed in the groove formed by the two adjacent outward convex opening sections of the inner damping ring, and the damping column is installed in the outer damping ring hole and the inner damping ring hole. When the bevel gear vibrates, the vibration energy of the bevel gear is converted into the kinetic energy of the damping column and the friction energy consumed by the collision between the inner and outer damping rings.

[0010] Furthermore, the damping ring installation groove has a baffle, and the length of the baffle can prevent the damping columns in the outer damping ring hole and the inner damping ring hole from flowing out.

[0011] Furthermore, the shapes of the outer damping ring holes and the inner damping ring holes are rectangular, elliptical or circular.

[0012] Furthermore, the inwardly convex opening section and the outwardly convex opening section are any one of trapezoidal, rectangular or semicircular.

[0013] Furthermore, the diameter of the damping column is equal to the diameter of the outer damping ring hole or the inner damping ring hole.

[0014] Furthermore, the damping column is a metal column or a metal rubber column.

[0015] Furthermore, it also includes a disassembly nail and a reinforced locking plate for installing and disassembling the outer damping ring and the inner damping ring, the disassembly nail includes a nail tail, a push rod integral with the nail tail, and a push head located at the front end of the push rod, wherein the nail head is conical, gradually increasing from the front end to the rear end of the nail head, and the rear end diameter of the nail head is larger than the diameter of the push rod, and a notch is provided on the push rod along the length direction, and the notch divides the push rod and the nail head into two halves.

[0016] Furthermore, when the outer damping ring and the inner damping ring are installed and removed by means of the disassembly pins and the reinforced locking plates, outer damping ring disassembly holes penetrating the inner wall are provided on the inner wall of the outer damping ring hole on both sides of the wedge of the outer damping ring and / or inner damping ring disassembly holes penetrating the inner wall are provided on the inner wall of the inner damping ring hole on both sides of the wedge of the inner damping ring, and the disassembly pins are inserted into the outer damping ring disassembly holes and / or the inner damping ring disassembly holes to control the bending of the outer damping ring and / or the inner damping ring and thereby place the outer damping ring and / or the inner damping ring in the damping ring installation groove.

[0017] The parent-child damping ring proposed in the present application has a simple structure and high damping efficiency. It has high reliability even after a long working time. It is also easy to process, manufacture, assemble, and disassemble for inspection, and has low maintenance costs. It can be widely used in vibration suppression of high-speed, high-load, and thin arc bevel gears, and can also be extended to vibration suppression of other rotor structures. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] In order to more clearly illustrate the technical solution provided by the present application, the following is a brief introduction to the accompanying drawings. Obviously, the accompanying drawings described below are only some embodiments of the present application.

[0019] Figure 1 This is a front view of a high-speed, heavy-loaded spiral bevel gear with a parent and child damping ring in this application.

[0020] Figure 2 Based on Figure 1 Cross-sectional view of the bevel gear with parent and child damping rings, sectioned along AA.

[0021] Figure 3 Based on Figure 1 Bevel gear section view at AA section.

[0022] Figure 4 This is a schematic diagram of the external damping ring structure in this application.

[0023] Figure 5 Schematic diagram of the inner damping ring structure in this application.

[0024] Figure 6 Schematic diagram of the damping column in this application.

[0025] Figure 7 This is a schematic diagram of the assembly status of the parent-child damping ring and multiple damping of the present application.

[0026] Figure 8 Schematic diagram of the disassembly nail of this application.

[0027] Fig. 9 This is a schematic diagram of the installation process of the removal nail and the reinforcement lock plate of the present application.

[0028] Reference numerals:

[0029] 1- Bevel gear

[0030] 11-Gear teeth

[0031] 12-Damping ring installation slot

[0032] 13-Spoke plate

[0033] 14-Wheel Hub

[0034] 15-Ring

[0035] 2-External damping ring

[0036] 21-External damping ring hole

[0037] 22-Flexible section of external damping ring

[0038] 23-External damping ring wedge

[0039] 24-External damping ring removal hole

[0040] 25-Inward convex opening section

[0041] 3-Inner damping ring

[0042] 31-Inner damping ring hole

[0043] 32-Internal damping ring flexible section

[0044] 33-Inner damping ring wedge

[0045] 34-Inner damping ring removal hole

[0046] 35-convex opening section

[0047] 4- Damping column

[0048] 5-Removal nails

[0049] 51-nail tail

[0050] 52-Nail rod

[0051] 53-Nailhead

[0052] 54-Gap

[0053] 6- Strengthen the lock piece DETAILED DESCRIPTION

[0054] In order to make the purpose, technical solutions and advantages of the implementation of this application clearer, the technical solutions in the embodiments of this application will be described in more detail below in conjunction with the drawings in the embodiments of this application.

[0055] like Figures 1 to 9 As shown, the multiple dry friction parent and child damping rings provided in the present application are mainly used in structures such as bevel gears 1 that are prone to vibration during transmission, and include: an outer damping ring 2 (or parent damping ring), an inner damping ring 3 (or child damping ring) and a damping column 4.

[0056] like Figure 2 and Figure 3As shown, the bevel gear 1 is mainly composed of gear teeth 11, spokes 13 and hub 14, and a damping ring mounting groove 12 is provided on the web 13. It can be understood that the bevel gear 1 in the present application can also be a gear structure of other configurations, such as a cylindrical gear, but the cylindrical gear should have a shock absorption requirement or exist in a vibration environment, and a damping ring mounting groove needs to be provided on the web of the cylindrical gear.

[0057] like Figure 4 As shown, the outer damping ring 2 is generally annular with an opening, and its annular body is mainly composed of an inward convex opening section 25 with at least two outer damping ring holes 21 and an outer damping ring flexible section 22 providing elastic deformation. The inward convex opening section 25 and the outer damping ring flexible section 22 are arranged at intervals, so that a groove can be formed between adjacent inward convex opening sections 25. An outer damping ring wedge 23 is provided on one of the outer damping ring flexible sections 22 to disconnect the entire annular outer damping ring 2, so that the outer damping ring 2 is more elastic as a whole and is convenient for assembly and disassembly, and prevents the outer damping ring 2 from being too rigid and unfavorable for use.

[0058] like Figure 5 As shown, the structure of the inner damping ring 3 is similar to that of the outer damping ring 2. The inner damping ring 3 is annular with an opening as a whole, and its annular body is mainly composed of an outer convex opening section 35 with at least two inner damping ring holes 31 and an inner damping ring flexible section 32 providing elastic deformation. The outer convex opening section 35 and the inner damping ring flexible section 32 are arranged at intervals, so that a groove can also be formed between adjacent outer convex opening sections 35. The inner convex opening section 25 is adapted to the groove in the inner damping ring 3, and the outer convex opening section 35 is adapted to the groove in the outer damping ring 2. An inner damping ring wedge 33 is provided on one of the inner damping ring flexible sections 32 to disconnect the entire annular inner damping ring 3, so that the inner damping ring 3 is more elastic as a whole and is convenient for assembly and disassembly, and prevents the inner damping ring 3 from being too rigid and unfavorable for use.

[0059] In this embodiment of the present application, the outer damping ring hole 21 and the inner damping ring hole 32 are both circular holes and there are three of them. The inner convex opening section 25 and the outer convex opening section 35 are both roughly trapezoidal in shape. The outer damping ring hole 21 and the inner damping ring hole 32 are used to reduce the weight of the outer damping ring 2 and the inner damping ring 3 respectively, and the contact area between the outer damping ring 2 and the inner damping ring 3 can be increased, reducing the contact load and thus reducing interface wear.

[0060] It can be understood that the outer damping ring hole 21 and the inner damping ring hole 32 in this embodiment can also be other shapes, such as a rectangle, and the trapezoidal inward convex opening section 25 and the outward convex opening section 35 can also be other shapes, such as a rectangle or a semicircle. Correspondingly, the grooves between adjacent inward convex opening sections 25 or outward convex opening sections 35 are also rectangular or semicircular.

[0061] like Figure 6 As shown, the damping column 4 is a metal column or metal rubber column structure with a diameter substantially equal to the outer damping ring hole 21 or the inner damping ring hole 32, and the gap between the two is as small as possible. In some embodiments, the metal column can be made of steel, copper or aluminum.

[0062] like Figure 7 As shown, when in use, the inner damping ring 3 is nested inside the outer damping ring 2, the outer convex opening section 35 of the inner damping ring 3 is installed in the groove formed by the two adjacent inner convex opening sections 25 of the outer damping ring 2, and the inner convex opening section 25 of the outer damping ring 2 is installed in the groove formed by the two adjacent outer convex opening sections 35 of the inner damping ring 3, and the damping column 4 is installed in the outer damping ring hole 21 and the inner damping ring hole 31. When the bevel gear 1 vibrates, the vibration energy of the bevel gear 1 is converted into the kinetic energy of the damping column 4 and the friction energy consumed by the collision between the inner and outer damping rings, thereby providing corresponding conditions for vibration reduction of the bevel gear 1.

[0063] It should be noted that when the inner and outer damping rings are installed in the damping ring mounting groove 12 of the bevel gear 1, a baffle 15 is provided on the damping ring mounting groove 12, and the length of the baffle 15 is roughly equal to the thickness of the combined inner and outer damping rings, thereby preventing the damping column 4 in the outer damping ring hole 21 and the inner damping ring hole 31 from flowing out.

[0064] In addition, in order to realize the installation and removal of the outer damping ring 2 and the inner damping ring 3 in the damping ring installation groove 12, the present application also provides a removal nail 5 and a reinforcement locking plate 6.

[0065] like Figure 8 and Fig. 9 As shown, the disassembly nail 5 includes a nail tail 51, a push rod 52 integral with the nail tail 51, and a push head 53 located at the front end of the push rod 52, wherein the nail head 53 is conical, gradually increasing from the upper end / front end to the lower end / rear end (connected to one end of the push rod 52), and the diameter of the end / rear end of the nail head 53 is larger than the diameter of the push rod 52, and the push rod 52 is provided with a notch 54 along the length direction, and the notch 54 divides the push rod 52 and the nail head 53 into two parts. When in use, the reinforcing locking piece 6 can be placed in the notch 54 to enhance the nail head strength of the disassembly nail 5. At the same time, outer damping ring disassembly holes 24 penetrating the inner wall are arranged on the inner wall (close to the center) of the outer damping ring hole 21 on both sides of the outer damping ring wedge 23, and inner damping ring disassembly holes 34 penetrating the inner wall are arranged on the inner wall (close to the center) of the inner damping ring hole 31 on both sides of the inner damping ring wedge 33, and the inner and outer damping rings are installed in the damping ring installation groove 12 with the retaining edge 15 by means of the disassembly pins 5 and the reinforcing locking plates 6.

[0066] Specifically, first, the damping columns 4 are respectively placed in the outer damping ring holes 21 of the outer damping ring 2, the two disassembly nails 5 are inserted into the disassembly holes 24, and the reinforcing locking plate 6 is inserted into the notch 54. The nail tail 51 is clamped with pliers, and the outer damping ring 2 is placed in the damping ring mounting groove 12 of the bevel gear 1. The reinforcing locking plate 6 is removed, and the nail rod 52 of the disassembly nail 5 is squeezed to take out the disassembly nail 5, so that the inner damping ring 3 and the outer damping ring 2 are stuck to each other to complete the assembly, and the inner damping ring 3 is installed in the damping ring mounting groove 12 of the bevel gear 1 in the same way.

[0067] During disassembly, firstly remove the inner damping ring 3 from the damping ring mounting groove 12 by means of the disassembly nail 5 , and then remove the outer damping ring 2 from the damping ring mounting groove 12 by means of the disassembly nail 5 . The removal process will not be described in detail.

[0068] During the operation of the parent-child damping ring provided in the present application, the bevel gear body often produces relatively violent vibrations because the bevel gear 1 is subjected to strong axial, circumferential and radial periodic excitations. For this reason, the damping column 4 is respectively placed in the outer damping ring hole 21 of the outer damping ring 2 and the inner damping ring hole 31 of the inner damping ring 3, and the inner and outer damping rings are installed in the mounting groove 12 of the big end of the bevel gear 1 tooth. The surfaces of the inner damping ring 3 and the outer damping ring 2 pressed against each other in the mounting groove 12 of the big end of the bevel gear 1 tooth have a sliding tendency, and a pair of dry friction forces in opposite directions are immediately generated on the two surfaces, also called Coulomb damping force. The surfaces of the inner damping ring 3 and the outer damping ring 2 pressed against each other have a sliding tendency, and a pair of dry friction forces in opposite directions are also generated, further increasing the ability to convert kinetic energy into heat energy or other energy that can be dissipated. Through the above-mentioned combined measures, the suppression of the structural vibration of the bevel gear 1 is accelerated.

[0069] The parent-child damping ring proposed in the present application has a simple structure and high damping efficiency. It has high reliability even after a long working time. It is also easy to process, manufacture, assemble, and disassemble for inspection, and has low maintenance costs. It can be widely used in vibration suppression of high-speed, high-load, and thin arc bevel gears, and can also be extended to vibration suppression of other rotor structures.

[0070] The above is only a specific implementation of the present application, but the protection scope of the present application is not limited thereto. Any changes or substitutions that can be easily thought of by a person skilled in the art within the technical scope disclosed in the present application should be included in the protection scope of the present application. Therefore, the protection scope of the present application shall be based on the protection scope of the claims.

Claims

1. A multiple dry friction damping ring for gear vibration reduction, wherein a damping ring mounting groove is provided on the web of the bevel gear, characterized in that: The parent-child damping ring comprises: An outer damping ring, which is in the shape of an open ring as a whole, and has an inner convex opening section including at least two outer damping ring holes and an outer damping ring flexible section providing elastic deformation, and two adjacent inner convex opening sections form a groove at the outer damping ring flexible section, and an outer damping ring wedge is provided on one of the outer damping ring flexible sections; An inner damping ring, wherein the inner damping ring is in the shape of an annular ring with an opening as a whole, and an outward convex opening section including at least two inner damping ring holes and an inner damping ring flexible section providing elastic deformation are spaced apart on the annular main body of the inner damping ring, two adjacent outward convex opening sections form a groove at the inner damping ring flexible section, and an inner damping ring wedge is provided on one of the inner damping ring flexible sections; Damping column; When in use, the inner damping ring is nested on the inner side of the outer damping ring, the outward convex opening section of the inner damping ring is installed in the groove formed by the two adjacent inward convex opening sections of the outer damping ring, and the inward convex opening section of the outer damping ring is installed in the groove formed by the two adjacent outward convex opening sections of the inner damping ring, and the damping column is installed in the outer damping ring hole and the inner damping ring hole. When the bevel gear vibrates, the vibration energy of the bevel gear is converted into the kinetic energy of the damping column and the friction energy consumed by the collision between the inner and outer damping rings.

2. The multiple dry friction damping ring for gear vibration reduction according to claim 1, characterized in that: The damping ring installation groove has a baffle, and the length of the baffle can prevent the damping columns in the outer damping ring hole and the inner damping ring hole from flowing out.

3. The multiple dry friction damping ring for gear vibration reduction according to claim 1, characterized in that: The outer damping ring hole and the inner damping ring hole are in any shape of rectangle, ellipse or circle.

4. The multiple dry friction damping rings for gear vibration reduction according to claim 1, characterized in that: The inwardly convex opening section and the outwardly convex opening section are any one of a trapezoidal shape, a rectangular shape or a semicircular shape.

5. The multiple dry friction damping ring for gear vibration reduction according to claim 1, characterized in that: The diameter of the damping column is equal to the diameter of the outer damping ring hole or the inner damping ring hole.

6. The multiple dry friction damping ring for gear vibration reduction according to claim 1 or 5, characterized in that: The damping column is a metal column or a metal rubber column.

7. The multiple dry friction damping rings for gear vibration reduction according to claim 1, characterized in that: It also includes a disassembly nail and a reinforced locking plate for installing and disassembling the outer damping ring and the inner damping ring. The disassembly nail includes a nail tail, a push rod integral with the nail tail, and a push head located at the front end of the push rod, wherein the nail head is conical, gradually increasing from the front end to the rear end of the nail head, and the rear end diameter of the nail head is larger than the diameter of the push rod, and a notch is provided on the push rod along the length direction, and the notch divides the push rod and the nail head into two halves.

8. The multiple dry friction damping ring for gear vibration reduction according to claim 7, characterized in that: When installing and removing the outer damping ring and the inner damping ring by means of the disassembly pins and the reinforced locking plates shown, outer damping ring disassembly holes penetrating the inner wall are provided on the inner wall of the outer damping ring hole on both sides of the wedge of the outer damping ring and / or inner damping ring disassembly holes penetrating the inner wall are provided on the inner wall of the inner damping ring hole on both sides of the wedge of the inner damping ring, and the outer damping ring and / or the inner damping ring are placed in the damping ring installation groove by means of the disassembly pins penetrating into the outer damping ring disassembly holes and / or the inner damping ring disassembly holes to control the bending of the outer damping ring and / or the inner damping ring.

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