Tension-torsion composite corrugated pipe coupling

Abstract

The invention discloses a tension-torsion composite corrugated pipe coupling, and relates to the technical field of couplings, the tension-torsion composite corrugated pipe coupling comprises a torsion disc, a fixed disc and a fixed shaft, the torsion disc comprises a left torsion disc and a right torsion disc, the left torsion disc, the fixed shaft and the fixed disc form an annular gap at a first annular step, and a plane thrust bearing is arranged in the annular gap; the flexible transmission device is simple in structure, reasonable in design, low in manufacturing difficulty and cost, convenient to install and reliable in operation, is a flexible transmission device with excellent performance, can meet the working condition requirements of stretching and twisting at the same time, is suitable for complex application scenes with stretching and twisting effects at the same time, and is suitable for popularization and application. The device is especially suitable for wide-range popularization when being applied to tensile torsion resistance related tests.

Description

Technical Field

[0001] The invention relates to the technical field of couplings, in particular to a tension-torsion composite bellows coupling. Background Art

[0002] In the field of material mechanical property testing, tensile torsion test occupies a very important position. Through tensile torsion test, key data such as strength and plasticity of materials under tension and torsion can be obtained. These data have extremely important application value and reference significance for design and material selection, development of new materials, procurement and acceptance of materials, quality control of products, safety and evaluation of equipment, etc. In some cases, the results of tensile torsion test are even directly used as an important basis.

[0003] In tensile and torsion testing machines, the bellows coupling is an indispensable and important part of the transmission system. Its main function is to connect two shafts to achieve force transmission and movement of the transmission shaft. However, the traditional bellows coupling has certain limitations. It can only transmit force in two single working conditions, tension or torsion, and cannot operate normally in complex working conditions where tension and torsion exist at the same time. This also limits its use in some complex application scenarios that need to consider both tension and torsion. Summary of the invention

[0004] In view of the problems disclosed in the background technology, the present invention provides a tension-torsion composite bellows coupling.

[0005] To achieve the above object, the present invention provides the following technical solutions:

[0006] A tension-torsion composite bellows coupling, comprising a torsion plate, a fixed plate and a fixed shaft, characterized in that the torsion plate comprises a left torsion plate and a right torsion plate, and shaft holes are arranged in the middle of the left torsion plate and the right torsion plate, and extend toward each other and communicate with each other;

[0007] The shaft hole of the left torsion disk is provided with a first annular step, the shaft hole of the right torsion disk is provided with a second annular step, the fixed shaft includes a shaft shoulder, the fixed shaft penetrates from the shaft hole of the right torsion disk, and extends into the shaft hole of the left torsion disk, and the shaft shoulder is located at the second annular step to be limited, the fixed disk is arranged at the shaft hole of the left torsion disk, is located in the first annular step, and is fixedly connected to the fixed shaft by screws;

[0008] The left torsion plate, the fixed shaft and the fixed plate form a link gap at the first annular step, and a plane thrust bearing is arranged in the link gap. The left torsion plate and the right torsion plate are provided with bellows on their outer sleeves, and the two ends of the bellows are fixedly connected to the left torsion plate and the right torsion plate respectively by screws;

[0009] The above-mentioned tension-torsion composite bellows coupling is characterized in that the fixed shaft is clearance-matched with the inner walls of the shaft holes of the left torsion plate and the right torsion plate;

[0010] The above-mentioned tension-torsion composite bellows coupling is characterized in that the bellows is a metal bellows;

[0011] The above-mentioned tension-torsion composite bellows coupling is characterized in that the fixed disk is provided with a plurality of first screw holes evenly distributed in the circumferential direction, the number of the first screw holes is at least six, and the fixed disk is fixedly connected to one end of the fixed shaft by screws through the first screw holes;

[0012] The above-mentioned tension-torsion composite bellows coupling is characterized in that the left torsion plate and the right torsion plate are both provided with a plurality of second screw holes evenly distributed in the circumferential direction, the number of the second screw holes is at least six, and the left torsion plate and the right torsion plate are respectively fixedly connected to the two ends of the bellows by screws through the second screw holes;

[0013] The above-mentioned tension-torsion composite bellows coupling is characterized in that the planar thrust bearing includes gaskets on both sides, which are a tight ring and a loose ring respectively. The outer edge of the tight ring has a clearance fit with the inner wall of the left torsion disk, and its inner edge has an interference fit with the outer wall of the fixed shaft. The outer edge of the loose ring has a clearance fit with the inner wall of the left torsion disk, and its inner edge has a clearance fit with the outer wall of the fixed shaft.

[0014] Technical effects and advantages of the present invention:

[0015] The present invention discloses a tension-torsion composite bellows coupling, which relates to the technical field of couplings, and comprises a torsion plate, a fixed plate and a fixed shaft. The torsion plate comprises a left torsion plate and a right torsion plate. The left torsion plate, the fixed shaft and the fixed plate form a link gap at the first annular step, and a plane thrust bearing is arranged in the link gap. The outer sleeves of the left torsion plate and the right torsion plate are provided with bellows. The present invention has a simple structure, a reasonable design, a low manufacturing difficulty and cost, is easy to install and reliable in operation. It is a flexible transmission device with excellent performance, which can meet the working requirements of tension and torsion at the same time, and is suitable for complex application scenarios where tension and torsion exist at the same time, especially in the application of tension and torsion related tests, and is suitable for large-scale promotion. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a schematic diagram of the present invention.

[0017] Figure 2 It is a left view of the present invention.

[0018] Among them, the figure markings are as follows: 1. torsion plate; 2. fixed plate; 3. fixed shaft; 4. left torsion plate; 5. right torsion plate; 6. shaft hole; 7. first annular step; 8. second annular step; 9. shaft shoulder; 10. link gap; 11. plane thrust bearing; 12. bellows; 13. first screw hole; 14. second screw hole; 15. tightening ring; 16. loose ring. DETAILED DESCRIPTION

[0019] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0020] Example 1

[0021] As shown in the figure, the present embodiment discloses a tension-torsion composite bellows coupling, which can simultaneously meet the requirements of tension and torsion working conditions. Specifically, the tension-torsion composite bellows coupling comprises a torsion plate 1, a fixed plate 2 and a fixed shaft 3, wherein the torsion plate 1 comprises a left torsion plate 4 and a right torsion plate 5, and the middle parts of the left torsion plate 4 and the right torsion plate 5 are both provided with shaft holes 6, which extend toward each other and are connected;

[0022] A first annular step 7 is provided at the shaft hole 6 of the left torsion disk 4, and a second annular step 8 is provided at the shaft hole 6 of the right torsion disk 5. The fixed shaft 3 is used to transmit axial tensile force and torsional force, and includes a shaft shoulder 9. The fixed shaft 3 penetrates from the shaft hole 6 at the right torsion disk 5, and extends into the shaft hole 6 at the left torsion disk 4, and the shaft shoulder 9 is located at the second annular step 8 to be limited. The fixed disk 2 is arranged at the shaft hole 6 of the left torsion disk 4, located in the first annular step 7, and is fixedly connected to the fixed shaft 3 by screws;

[0023] When the tension-torsion composite bellows coupling is used, it is connected to the main shaft of the testing machine through the flange hole provided on the torsion plate 1;

[0024] In addition, the left torsion plate 4, the fixed shaft 3 and the fixed plate 2 form a link gap 10 at the first annular step 7, and a plane thrust bearing 11 is arranged in the link gap 10, so that the fixed plate 2 can still rotate freely when bearing the axial tensile force, which can effectively reduce the axial displacement and shaking. The left torsion plate 4 and the right torsion plate 5 are provided with a bellows 12 on the outer sleeve, and the two ends of the bellows 12 are fixedly connected to the left torsion plate 4 and the right torsion plate 5 by screws respectively;

[0025] At the same time, the fixed shaft 3 is clearance-matched with the inner wall of the shaft hole 6 of the left torsion plate 4 and the right torsion plate 5, and the bellows 12 is a metal bellows, which is a flexible, compressible metal tube with good elasticity and deformation ability, and can be used to buffer the changing input torque;

[0026] In order to improve the installation stability and structural stability and effectively realize the force transmission, a plurality of first screw holes 13 uniformly distributed in the circumference are provided on the fixed disk 2, the number of the first screw holes 13 is at least six, the fixed disk 2 is fixedly connected to one end of the fixed shaft 3 by screws through the first screw holes 13, and a plurality of second screw holes 14 uniformly distributed in the circumference are provided on the left torsion disk 4 and the right torsion disk 5, the number of the second screw holes 14 is at least six, and the left torsion disk 4 and the right torsion disk 5 are fixedly connected to the two ends of the bellows 12 by screws through the second screw holes 14;

[0027] In addition, the planar thrust bearing 11 includes gaskets on both sides, which are a tight ring 15 and a loose ring 16. The outer edge of the tight ring 15 has a clearance fit with the inner wall of the left torsion plate 4, and its inner edge has an interference fit with the outer wall of the fixed shaft 3. The outer edge of the loose ring 16 has a clearance fit with the inner wall of the left torsion plate 4, and its inner edge has a clearance fit with the outer wall of the fixed shaft 3.

[0028] To summarize, the tension-torsion composite bellows coupling disclosed in the present invention has a simple structure, reasonable design, low manufacturing difficulty and cost, easy installation, and reliable operation. It is a flexible transmission device with excellent performance that can simultaneously meet the working requirements of tension and torsion, and is suitable for complex application scenarios where tension and torsion exist at the same time, especially in applications related to tension and torsion resistance tests.

[0029] In the description of the present invention, unless otherwise clearly specified and limited, the terms "set", "install", "connect", "connect", and "fix" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0030] The standard parts used in the present invention can all be purchased from the market, and the special-shaped parts can all be customized according to the description and the drawings.

[0031] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A tension-torsion composite bellows coupling, comprising a torsion plate (1), a fixed plate (2) and a fixed shaft (3), characterized in that: The torsion plate (1) comprises a left torsion plate (4) and a right torsion plate (5), wherein the middle parts of the left torsion plate (4) and the right torsion plate (5) are both provided with shaft holes (6) and extend in opposite directions and communicate with each other; The shaft hole (6) of the left torsion disk (4) is provided with a first annular step (7), the shaft hole (6) of the right torsion disk (5) is provided with a second annular step (8), the fixed shaft (3) comprises a shaft shoulder (9), the fixed shaft (3) penetrates from the shaft hole (6) of the right torsion disk (5), and extends into the shaft hole (6) of the left torsion disk (4), and the shaft shoulder (9) is located at the second annular step (8) to be limited, the fixed disk (2) is arranged at the shaft hole (6) of the left torsion disk (4), is located in the first annular step (7), and is fixedly connected to the fixed shaft (3) by screws; The left torsion disc (4), the fixed shaft (3) and the fixed disc (2) form a link gap (10) at the first annular step (7), and a plane thrust bearing (11) is arranged in the link gap (10). The left torsion disc (4) and the right torsion disc (5) are provided with a bellows (12) on their outer sleeves, and the two ends of the bellows (12) are fixedly connected to the left torsion disc (4) and the right torsion disc (5) by screws respectively.

2. The tension-torsion composite bellows coupling according to claim 1, characterized in that: The fixed shaft (3) is clearance-matched with the inner walls of the shaft holes (6) of the left torsion disc (4) and the right torsion disc (5).

3. The tension-torsion composite bellows coupling according to claim 1, characterized in that: The bellows (12) is a metal bellows.

4. The tension-torsion composite bellows coupling according to claim 2, characterized in that: The fixing plate (2) is provided with a plurality of first screw holes (13) evenly distributed in the circumferential direction, the number of the first screw holes (13) is at least six, and the fixing plate (2) is fixedly connected to one end of the fixing shaft (3) by means of screws via the first screw holes (13).

5. The tension-torsion composite bellows coupling according to claim 4, characterized in that: The left torsion plate (4) and the right torsion plate (5) are both provided with a plurality of second screw holes (14) evenly distributed in the circumferential direction, and the number of the second screw holes (14) is at least six. The left torsion plate (4) and the right torsion plate (5) are respectively fixedly connected to the two ends of the corrugated pipe (12) by screws through the second screw holes (14).

6. A tension-torsion composite bellows coupling according to any one of claims 1 to 5, characterized in that: The planar thrust bearing (11) comprises gaskets on two sides, namely a tight ring (15) and a loose ring (16); the outer edge of the tight ring (15) is in clearance fit with the inner wall of the left torsion plate (4), and the inner edge thereof is in interference fit with the outer wall of the fixed shaft (3); the outer edge of the loose ring (16) is in clearance fit with the inner wall of the left torsion plate (4), and the inner edge thereof is in clearance fit with the outer wall of the fixed shaft (3).

Images