Coupling mounting structure with limiting function

Abstract

The utility model relates to a coupler mounting structure with a limiting function, which comprises a spacing shaft, the spacing shaft is connected with a flange through a first stretching limiting structure and a second stretching limiting structure, and a diaphragm and a compression limiting structure are arranged between the spacing shaft and the flange; the first stretching limiting structure comprises a first flange mounting hole and a first spacing hole; a connecting boss is arranged on the flange, and the first flange mounting hole is formed in the connecting boss; a spacing boss is arranged on the spacing shaft, and the first spacing hole is formed in the spacing boss; a first diaphragm bushing is mounted in the first flange mounting hole, first bolts are mounted in the first diaphragm bushing and the first spacing hole, and a first diaphragm bushing limiting boss extending out of the first flange mounting hole is arranged on the outer side of the first diaphragm bushing. When the coupler is subjected to axial pressure stress and tensile stress, the diaphragm cannot be damaged due to deformation exceeding, the interval shaft can be prevented from flying out, and operation of a unit is protected.

Description

Technical Field

[0001] The utility model belongs to the technical field of diaphragm couplings and relates to a coupling installation structure with a limiting function. Background Art

[0002] Diaphragm couplings are widely used in the fluid machinery industry and in professional fields such as pumps, fans, and compressors. The function of a diaphragm coupling is to connect the drive shaft and the driven shaft, thereby transmitting torque from the drive side to the driven side. However, in the application of the coupling, it is often found that due to the axial movement of the drive shaft or the driven shaft, the coupling bears additional stress during operation, resulting in a shortened service life of the coupling and easy damage to the diaphragm and bolts. Summary of the invention

[0003] The utility model aims to provide a coupling installation structure with a limiting function, which can solve the above-mentioned problem, prevent the spacing shaft from flying out, and protect the operation of the unit.

[0004] According to the technical solution provided by the utility model: a coupling mounting structure with a limiting function includes a spacing shaft, the spacing shaft is connected to the flange through a first stretching limiting structure and a second stretching limiting structure, and a diaphragm and a compression limiting structure are arranged between the spacing shaft and the flange; the first stretching limiting structure includes a first flange mounting hole and a first spacing hole; a connecting boss is arranged on the flange, and the first flange mounting hole is located on the connecting boss; a spacing boss is arranged on the spacing shaft, and the first spacing hole is located on the spacing boss; a first diaphragm bushing is installed in the first flange mounting hole, a first bolt is installed in the first diaphragm bushing and the first spacing hole, and a first diaphragm bushing limiting boss extending out of the first flange mounting hole is arranged on the outer side of the first diaphragm bushing, A first axial tensile gap is left between the first diaphragm bushing limiting boss and the connecting boss; the axial tensile limiting structure includes a second flange hole and a second interval mounting hole, the second flange hole and the second interval mounting hole are respectively arranged on the connecting boss and the interval boss, the second diaphragm bushing is installed in the second interval mounting hole, and the second bolt is installed in the second diaphragm bushing and the second flange hole; a second diaphragm bushing limiting boss extending out of the second interval mounting hole is provided on the inner side of the second diaphragm bushing, and an axial tensile gap is left between the second diaphragm bushing limiting boss and the interval boss; the compression limiting structure includes an interval boss and a flange limiting surface, the flange limiting surface is arranged on the inner end surface of the flange, and a compression gap is left between the interval boss and the flange limiting surface.

[0005] As a further improvement of the utility model, the diaphragm portion is located between the first diaphragm bushing and the spacing shaft; the diaphragm portion is located between the second diaphragm bushing and the connecting boss.

[0006] As a further improvement of the utility model, the first bolt passes through the first spacing hole, the diaphragm, and the first diaphragm bushing in sequence and then is connected to the nut.

[0007] As a further improvement of the utility model, the second bolt passes through the second diaphragm bushing, the diaphragm, and the second flange hole in sequence and then is connected to the nut.

[0008] As a further improvement of the utility model, a safety step is provided on the flange, and both ends of the spacer shaft are located at the outer periphery of the safety step.

[0009] The positive effects of this application are:

[0010] When the coupling of the utility model is subjected to axial compressive stress and tensile stress, the diaphragm will not be damaged due to excessive deformation, and the spacer shaft can be prevented from flying out, thereby protecting the operation of the unit. BRIEF DESCRIPTION OF THE DRAWINGS

[0011] Figure 1 It is a sectional view of the overall structure of the utility model.

[0012] Figure 2 for Figure 1 A magnified schematic diagram of area A in the middle.

[0013] Figure 1-Figure 2 It includes flange 1, diaphragm 4, spacer shaft 6 and the like. DETAILED DESCRIPTION

[0014] It should be noted that, in the absence of conflict, the embodiments and features in the embodiments of the present invention can be combined with each other. The present invention will be described in detail below with reference to the accompanying drawings and in combination with the embodiments.

[0015] In order to enable those skilled in the art to better understand the solution of the utility model, 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 of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work should fall within the scope of protection of the utility model.

[0016] It should be noted that the terms "first", "second", etc. in the specification and claims of the utility model and the above-mentioned drawings are used to distinguish similar objects, and are not necessarily used to describe a specific order or sequence. It should be understood that the data used in this way can be interchanged where appropriate, so as to describe the embodiments of the utility model described herein. In addition, similar terms such as "including" and "having" mean that in addition to those contents already listed in "including" and "having", other contents that have not been listed can also be "included" and "having"; for example, a process, method, system, product or device that can include a series of steps or units is not necessarily limited to those steps or units that have been clearly listed, but can include other steps or units that are not clearly listed or inherent to these processes, methods, products or devices.

[0017] Due to the angle of the drawing, some components may not be drawn, but their positions and connection relationships can be partially understood based on the text expression.

[0018] like Figure 1 As shown, the utility model is a coupling installation structure with a limiting function, including a spacing shaft 6, the spacing shaft 6 is connected to the flange 1 through a first stretching limiting structure and a second stretching limiting structure, and a diaphragm 4 and a compression limiting structure are provided between the spacing shaft 6 and the flange 1.

[0019] The first stretching limiting structure includes a first flange mounting hole and a first spacing hole; a connecting boss 1-1 is provided on the flange 1, and the first flange mounting hole is located on the connecting boss 1-1; a spacing boss 6-1 is provided on the spacing shaft 6, and the first spacing hole is located on the spacing boss 6-1; a first diaphragm bushing 3-1 is installed in the first flange mounting hole, a first bolt 5-1 is installed in the first diaphragm bushing 3-1 and the first spacing hole, and the diaphragm 4 is partially located between the first diaphragm bushing 3-1 and the spacing shaft 6. A first diaphragm bushing limiting boss 3-11 extending out of the first flange mounting hole is provided on the outside of the first diaphragm bushing 3-1, and a first axial stretching gap X1 is left between the first diaphragm bushing limiting boss 3-11 and the connecting boss 1-1.

[0020] The first bolt 5 - 1 passes through the first spacing hole, the diaphragm 4 , and the first diaphragm bushing 3 - 1 in sequence and then connects with the nut 2 .

[0021] The axial stretching limiting structure includes a second flange hole and a second spacing mounting hole, which are respectively arranged on the connecting boss 1-1 and the spacing boss 6-1, the second diaphragm bushing 3-2 is installed in the second spacing mounting hole, the second bolt 5-2 is installed in the second diaphragm bushing 3-2 and the second flange hole, and the diaphragm 4 is partially located between the second diaphragm bushing 3-2 and the connecting boss 1-1. The second diaphragm bushing 3-2 is provided with a second diaphragm bushing limiting boss 3-21 extending out of the second spacing mounting hole on the inner side, and an axial stretching gap X2 is left between the second diaphragm bushing limiting boss 3-21 and the spacing boss 6-1.

[0022] The second bolt 5 - 2 passes through the second diaphragm bushing 3 - 2 , the diaphragm 4 , and the second flange hole in sequence and then connects with the nut 2 .

[0023] The first stretching limit structure and the second stretching limit structure are arranged at intervals. The first axial stretching gap X1 and the axial stretching gap X2 are at the same distance, ensuring that the coupling is evenly stressed when stretched.

[0024] The compression limiting structure includes a spacing boss 6-1 and a flange limiting surface 1-2. The flange limiting surface 1-2 is arranged on the inner end surface of the flange 1. A compression gap X3 is left between the spacing boss 6-1 and the flange limiting surface 1-2.

[0025] A safety step 1-3 is provided on the flange 1, and both ends of the spacing shaft 6 are located outside the safety step 1-3. When the diaphragm 4 and the first bolt 5-1 and the second bolt 5-2 in the diaphragm coupling fail, both sides of the spacing shaft 6 will be suspended on the safety step 1-3 to prevent the spacing shaft 6 from flying out, thus protecting the unit from running.

[0026] In this embodiment, the first stretching limit structure and the second stretching limit structure are connected to the flange 1 on both sides of the spacing shaft 6, the left flange 1 is connected to the driven component, and the right flange 1 is connected to the active component. The first stretching limit structures on the left and right sides are staggered, and the second stretching limit structures on the left and right sides are staggered.

[0027] The working principle of the utility model is:

[0028] When the coupling is subjected to tensile stress, the direction of the axial force is to pull the coupling to both sides, and the diaphragm 4 is partially pulled outward by the second diaphragm bushing 3-2, and the diaphragm 4 is partially stationary between the first diaphragm bushing 3-1 and the spacing boss 6-1, and the diaphragm 4 is deformed. The first diaphragm bushing limiting boss 3-11 approaches the connecting boss 1-1, and the second diaphragm bushing limiting boss 3-21 approaches the spacing boss 6-1. When the axial force is large enough, the first diaphragm bushing limiting boss 3-11 contacts the connecting boss 1-1, and the second diaphragm bushing limiting boss 3-21 contacts the spacing boss 6-1, and the deformation of the diaphragm 4 remains unchanged. When the coupling is subjected to axial compressive stress, the diaphragm 4 will not be damaged due to excessive deformation.

[0029] When the coupling is subjected to compressive stress, the axial force is directed to squeeze the coupling toward the middle, and the first diaphragm bushing 3-1 and the connecting boss 1-1 jointly squeeze the diaphragm 4, while the spacing boss 6-1 and the flange limit surface 1-2 are constantly approaching each other. When the axial force is large enough, the spacing boss 6-1 and the flange limit surface 1-2 are flat. At this time, the axial force increases again, and the deformation of the diaphragm 4 remains unchanged. When the coupling is subjected to axial compressive stress, the diaphragm 4 will not be damaged due to excessive deformation.

[0030] It is understood that the above embodiments are merely exemplary embodiments used to illustrate the principles of the present invention, but the present invention is not limited thereto. For those skilled in the art, various modifications and improvements can be made without departing from the spirit and essence of the present invention, and these modifications and improvements are also considered to be within the scope of protection of the present invention.

Claims

1. A coupling installation structure with a limiting function, comprising a spacing shaft (6), characterized in that: The spacing shaft (6) is connected to the flange (1) via a first stretching limiting structure and a second stretching limiting structure, and a diaphragm (4) and a compression limiting structure are provided between the spacing shaft (6) and the flange (1); the first stretching limiting structure comprises a first flange mounting hole and a first spacing hole; a connecting boss (1-1) is provided on the flange (1), and the first flange mounting hole is located on the connecting boss (1-1); a spacing boss (6-1) is provided on the spacing shaft (6), and the first spacing hole is located on the spacing boss (6-1); a first diaphragm bushing (3-1) is installed in the first flange mounting hole, a first bolt (5-1) is installed in the first diaphragm bushing (3-1) and the first spacing hole, a first diaphragm bushing limiting boss (3-11) extending out of the first flange mounting hole is provided on the outside of the first diaphragm bushing (3-1), and a first axial tension gap is left between the first diaphragm bushing limiting boss (3-11) and the connecting boss (1-1). The axial stretching limit structure comprises a second flange hole and a second interval mounting hole, the second flange hole and the second interval mounting hole are respectively arranged on the connecting boss (1-1) and the interval boss (6-1), the second diaphragm bushing (3-2) is installed in the second interval mounting hole, and the second bolt (5-2) is installed in the second diaphragm bushing (3-2) and the second flange hole; the inner side of the second diaphragm bushing (3-2) is provided with a second diaphragm bushing limit boss (3-21) extending out of the second interval mounting hole, and an axial stretching gap (X2) is left between the second diaphragm bushing limit boss (3-21) and the interval boss (6-1); the compression limit structure comprises the interval boss (6-1) and a flange limit surface (1-2), the flange limit surface (1-2) is arranged on the inner end surface of the flange (1), and a compression gap (X3) is left between the interval boss (6-1) and the flange limit surface (1-2).

2. The coupling installation structure with a limiting function according to claim 1, characterized in that: The diaphragm (4) is partially located between the first diaphragm bushing (3-1) and the spacing shaft (6); and the diaphragm (4) is partially located between the second diaphragm bushing (3-2) and the connecting boss (1-1).

3. The coupling installation structure with a limiting function according to claim 1, characterized in that: The first bolt (5-1) passes through the first spacing hole, the diaphragm (4), and the first diaphragm bushing (3-1) in sequence and is then connected to the nut (2).

4. The coupling installation structure with a limiting function according to claim 1, characterized in that: The second bolt (5-2) passes through the second diaphragm bushing (3-2), the diaphragm (4), and the second flange hole in sequence and is then connected to the nut (2).

5. The coupling installation structure with a limiting function according to claim 1, characterized in that: A safety step (1-3) is provided on the flange (1), and both ends of the spacer shaft (6) are located on the outer periphery of the safety step (1-3).

Images