Spindle detachable flange structure

Abstract

The utility model discloses a kind of main shaft detachable flange structure, it is related to shaft flange connection technical field, including main shaft and flange, the main shaft is detachably assembled with the flange using split assembly structure, the flange is detachably assembled with the main shaft at one end or both ends of the main shaft, the flange is using fastening bolt connection the main shaft, detachable assembly mode is used between flange and main shaft to replace the mode that traditional flange is welded on the main shaft, flange is removed, and annular piece such as bearing, sealing ring can be assembled, annular piece does not need to be split, make annular piece be assembled on the main shaft as integral type structure, eliminate split face to close, also reduce drip link caused by this structure, since reducing drip link, and for rotating machinery, annular piece split close structure is the link that drip area is largest, therefore, drip, run, leak and other stubborn diseases can be effectively alleviated or controlled, and the ring evaluation level of equipment or construction site can be improved.

Description

Technical Field

[0001] This utility model relates to the field of shaft flange connection technology, specifically a detachable flange structure for a main shaft. Background Technology

[0002] Flanges are typically used to connect the driving and driven ends of the spindle of rotating machinery. Flange connection is the most common spindle connection method used in rotating machinery. Its advantages include simple structure and ease of connection between the two ends. However, its disadvantage is that the bearings and sealing rings between the two flanges must be assembled in separate sections. This separation creates an additional leakage point, which is a major reason why leaks and other persistent problems are difficult to eliminate. Utility Model Content

[0003] The purpose of this utility model is to overcome the shortcomings of the prior art and provide a spindle detachable flange structure to solve the shortcomings of the prior art.

[0004] The purpose of this utility model is achieved through the following technical solution: a spindle detachable flange structure, including a spindle and a flange, wherein the spindle and the flange adopt a split assembly structure, and the flange is detachably assembled at one or both ends of the spindle, and the flange is connected to the spindle by fastening bolts.

[0005] Furthermore, the main shaft is a hollow shaft, and a plurality of first connecting holes are provided through the flange. The plurality of first connecting holes are evenly distributed in a circle around the inner hole of the main shaft. A first mounting hole is provided at the end of the main shaft corresponding to the position of the first connecting hole. The tail of the fastening bolt passes through the first connecting hole and is connected to the first mounting hole.

[0006] Furthermore, the first connecting hole includes a first countersunk hole and a first through hole in sequence along the direction close to the main shaft. The tail of the fastening bolt passes through the first through hole and is threaded into the first mounting hole, while the head of the fastening bolt is located in the first countersunk hole.

[0007] Furthermore, the main shaft is a solid shaft, and one or both ends of the main shaft are coaxially provided with a second mounting hole. The flange is coaxially provided with a second connecting hole, and the tail of the fastening bolt passes through the second connecting hole and is threaded into the second mounting hole.

[0008] Furthermore, the second connecting hole includes a second countersunk hole and a second through hole in sequence along the direction close to the main shaft. The tail of the fastening bolt passes through the second through hole and is threaded into the second mounting hole, while the head of the fastening bolt is located in the second countersunk hole.

[0009] The beneficial effects of this utility model are:

[0010] 1. The flange and spindle adopt a detachable assembly method instead of the traditional flange welding to the spindle. The flange can be removed to install bearings, sealing rings and other ring parts through the spindle. The ring parts do not need to be segmented, so that the ring parts are assembled on the spindle as a whole structure, eliminating the segmented surface.

[0011] 2. By eliminating the ring-shaped segment and the segmented surface joining structure, the leakage caused by this structure is also reduced, thus improving the reliability of the equipment.

[0012] 3. Because the leakage points are reduced, and for rotating machinery, the segmented structure of the ring-shaped part is the point that causes the largest leakage area, the persistent problems of dripping, running, and leaking can be effectively alleviated or controlled, and the environmental impact assessment level of the equipment or construction site can be improved.

[0013] 4. It is a common design practice for through-shaft ring components of rotating machinery to adopt a segmented structure. However, since the technical solution of this application allows through-shaft ring components to be unsegmented, this will change the design concept and bring new design concepts, new structural forms, and new production and installation modes to some rotating machinery. Attached Figure Description

[0014] Figure 1 This is an assembly diagram of Embodiment 2 of the spindle detachable flange structure of this utility model;

[0015] Figure 2 This is a schematic diagram of the flange structure in Embodiment 2 of the present invention, which is a detachable flange structure for a main shaft.

[0016] Figure 3 This is an assembly diagram of Embodiment 3 of the spindle detachable flange structure of this utility model;

[0017] Figure 4 This is a schematic diagram of the flange structure in Embodiment 3 of the present invention, which is a detachable flange structure for a main shaft.

[0018] In the diagram, 1-spindle, 2-flange, 3-fastening bolt, 4-first mounting hole, 5-first countersunk hole, 6-first through hole, 7-second mounting hole, 8-second countersunk hole, 9-second through hole. Detailed Implementation

[0019] Example 1

[0020] like Figures 1 to 4As shown, a detachable flange structure for a main shaft includes a main shaft 1 and a flange 2. The main shaft 1 and flange 2 adopt a split assembly structure. One or both ends of the main shaft 1 are detachably equipped with flange 2. The flange 2 is connected to the main shaft 1 by fastening bolts 3. Through structural innovation, the flange 2 at one or both ends of the main shaft 1 adopts a detachable structure. When connecting the driving end and the driven end, the flange 2 is first removed, and then the bearing, sealing ring and other annular parts are assembled onto the main shaft 1 through the shaft to realize the assembly of the annular parts with the main shaft 1. Then the flange 2 is connected to the main shaft 1. Finally, the flange at the driving end is connected to the flange at the driven end to realize power transmission. The bearing and sealing annular parts between the two flanges 2 of the main shaft 1 can be assembled through the shaft without being split, thereby eliminating the leakage caused by the split surface, improving the reliability of the equipment, and is effective and feasible. It has become one of the effective measures to eradicate the stubborn problems of dripping, running and leaking, and achieve the purpose of improving the environmental impact assessment level. Moreover, this technical solution can also change the design concept of some rotating machinery. In practice, the flange 2 is fitted with a torque transmission structure at the shaft end of the spindle. The torque transmission structure adopts a key and keyway assembly structure or a pin sleeve structure to withstand the tangential load when the spindle transmits torque. With the key and keyway assembly structure, the flange 2 is installed on the spindle 1 by sleeve, and the positioning is completed by the cooperation of the key and keyway. Finally, the connection is completed by fastening bolts.

[0021] Example 2

[0022] Based on Example 1, such as Figure 1 and Figure 2 As shown, the spindle 1 is a hollow shaft, and multiple first connecting holes are opened through the flange 2. The multiple first connecting holes are evenly distributed circumferentially around the inner hole of the spindle 1. The end of the spindle 1 is provided with a first mounting hole 4 corresponding to the position of the first connecting hole. The tail of the fastening bolt 3 passes through the first connecting hole and is connected to the first mounting hole 4. The first connecting hole includes a first countersunk hole 5 and a first through hole 6 in sequence along the direction close to the spindle 1. The tail of the fastening bolt 3 passes through the first through hole 6 and is threaded into the first mounting hole 4. The head of the fastening bolt 3 is located in the first countersunk hole 5. When the spindle 1 is a hollow shaft, multiple first mounting holes 4 are evenly distributed around the inner hole of the spindle 1. The connection between the spindle 1 and the flange 2 is completed by multiple fastening bolts 3. Since the spindle 1 is hollow, the fastening bolts 3 cannot be concentric with the spindle 1. In order to ensure connection stability and uniform force distribution, multiple circumferentially distributed fastening bolts 3 are used for connection so that the fastening bolts 3 can bear the axial load borne by the spindle 1.

[0023] Example 3

[0024] Based on Example 1, such as Figure 3 and Figure 4As shown, the spindle 1 is a solid shaft. One or both ends of the spindle 1 are coaxially provided with a second mounting hole 7. The flange 2 is coaxially provided with a second connecting hole. The tail of the fastening bolt 3 passes through the second connecting hole and is threaded into the second mounting hole 7. The second connecting hole includes a second countersunk hole 8 and a second through hole 9 in sequence along the direction close to the spindle 1. The tail of the fastening bolt 3 passes through the second through hole 9 and is threaded into the second mounting hole 7. The head of the fastening bolt 3 is located in the second countersunk hole 8. Since the spindle 1 is a solid shaft, the connection between the spindle 1 and the flange 2 can be completed by a single coaxial fastening bolt 3. This ensures connection stability and uniform force distribution while reducing the number of fastening bolts 3. The second countersunk hole 8 can hide the fastening bolt 3 and prevent the fastening bolt 3 from protruding and causing interference.

Claims

1. A spindle detachable flange structure, comprising a spindle (1) and a flange (2), characterized in that, The spindle (1) and the flange (2) adopt a split assembly structure. The flange (2) is detachably assembled at one or both ends of the spindle (1). The flange (2) is connected to the spindle (1) by fastening bolts (3).

2. The spindle detachable flange structure according to claim 1, characterized in that, The main shaft (1) is a hollow shaft. Multiple first connecting holes are provided through the flange (2). The multiple first connecting holes are evenly distributed around the inner hole of the main shaft (1). A first assembly hole (4) is provided at the end of the main shaft (1) corresponding to the position of the first connecting hole. The tail of the fastening bolt (3) passes through the first connecting hole and is connected in the first assembly hole (4).

3. The spindle detachable flange structure according to claim 2, characterized in that, The first connecting hole includes a first countersunk hole (5) and a first through hole (6) in sequence along the direction close to the main shaft (1). The tail of the fastening bolt (3) passes through the first through hole (6) and is threaded into the first mounting hole (4). The head of the fastening bolt (3) is located in the first countersunk hole (5).

4. The spindle detachable flange structure according to claim 1, characterized in that, The main shaft (1) is a solid shaft. One or both ends of the main shaft (1) are coaxially provided with a second assembly hole (7). The flange (2) is coaxially provided with a second connecting hole. The tail of the fastening bolt (3) passes through the second connecting hole and is threaded into the second assembly hole (7).

5. The spindle detachable flange structure according to claim 4, characterized in that, The second connecting hole includes a second countersunk hole (8) and a second through hole (9) in sequence along the direction close to the main shaft (1). The tail of the fastening bolt (3) passes through the second through hole (9) and is threaded into the second mounting hole (7). The head of the fastening bolt (3) is located in the second countersunk hole (8).

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