Shaft diameter variable coupling

Abstract

A shaft-diameter-variable coupling belongs to the technical field of mechanical transmission equipment and is used for connecting transmission shafts with different shaft diameters. According to the technical scheme, an outer sleeve connecting disc is arranged outside the rear end of an outer sleeve in a sleeving mode, an inner sleeve is placed in an inner hole of the outer sleeve, a plurality of positioning screw holes are evenly distributed around the circumference of the cylinder wall of the outer sleeve, inner sleeve positioning bolts are connected with the outer wall of the inner sleeve in an abutting mode through the positioning screw holes, and the diameter of an inner hole of the inner sleeve is matched with the outer diameter of a transmission shaft. The connecting long holes are evenly distributed around the circumference of the outer sleeve connecting disc, and the connecting disc fixing bolts are connected with mechanical equipment or an outer sleeve connecting disc of another coupler through the connecting long holes. The universal coupling is simple in structure and convenient to operate, transmission shafts with different shaft diameters can be connected, the coupling becomes a universal coupling, the requirement for customizing different coupling spare parts is reduced, the purchase cost of the spare parts is reduced, quick replacement can be achieved, and the maintenance work efficiency is improved.

Description

Technical Field

[0001] This utility model relates to a coupling with a variable shaft diameter, belonging to the technical field of mechanical transmission equipment. Background Technology

[0002] Couplings are widely used connecting devices for shaft components in various mechanical equipment, such as motors, reducers, rotating shafts, and transmission shafts. In actual mechanical installation and connection, couplings often encounter situations where the two components to be connected have different shaft diameters, coupling connection bore sizes, and bore spacing, resulting in incompatibility or the need for custom-made couplings. Furthermore, in actual production processes, the frequent replacement of various shaft couplings is cumbersome, reducing work efficiency and increasing unnecessary spare parts costs. Therefore, designing a coupling that can adapt to connecting shaft components with different diameters is essential. Utility Model Content

[0003] The technical problem to be solved by this utility model is to provide a variable shaft diameter coupling. This coupling can connect transmission shafts with different shaft diameters to mechanical equipment, or connect two transmission shafts with different shaft diameters into one unit for transmission. This makes the coupling a universal coupling, reduces the need for customized different coupling spare parts, reduces spare parts procurement costs, and allows for quick replacement, thus improving maintenance efficiency.

[0004] The technical solution to the above technical problem is:

[0005] A variable-diameter coupling includes an outer sleeve, an outer sleeve connecting disc, an inner sleeve, inner sleeve positioning bolts, and connecting disc fixing bolts. The outer sleeve is cylindrical, and the outer sleeve connecting disc is an annular ring, fitted onto the rear end of the outer sleeve. The outer sleeve and the outer sleeve connecting disc are integrated. The inner sleeve is cylindrical, and its outer diameter matches the inner diameter of the outer sleeve. The inner sleeve is placed within the inner diameter of the outer sleeve. Positioning screw holes are located on the cylindrical wall of the outer sleeve, with multiple positioning screw holes evenly distributed around the circumference of the outer sleeve's cylindrical wall. The inner sleeve positioning bolts are used for positioning... The screw hole is tightly connected to the outer wall of the inner sleeve. The inner diameter of the inner sleeve matches the outer diameter of the drive shaft. There is a keyway on the inner wall of the inner sleeve along the length of the inner sleeve. The inner sleeve is connected to the drive shaft by the keyway. There are multiple connecting elongated holes on the annular surface of the outer sleeve connecting plate. The multiple connecting elongated holes are evenly distributed around the circumference of the annular surface of the outer sleeve connecting plate. The length direction of the multiple connecting elongated holes coincides with the annular diameter of the outer sleeve connecting plate. Multiple connecting plate fixing bolts are connected to the outer sleeve connecting plate of the mechanical equipment or another coupling through the connecting elongated holes.

[0006] In the aforementioned variable shaft diameter coupling, there are multiple inner sleeves, and the inner diameter of each inner sleeve is matched with the shaft diameter of the different transmission shafts to be connected.

[0007] In the aforementioned variable shaft diameter coupling, the positioning screw holes on the cylindrical wall of the outer sleeve are arranged in two rows, with each row containing four positioning screw holes that are evenly distributed around the circumference of the cylindrical wall of the outer sleeve. The outer wall of the inner sleeve has eight bolt positioning grooves, each arc-shaped, which are respectively aligned with the two rows of positioning screw holes on the outer sleeve. Eight inner sleeve positioning bolts are connected to the bolt positioning grooves on the outer sleeve through the positioning screw holes on the cylindrical wall of the outer sleeve. The inner sleeve positioning bolts have anti-loosening nuts that lock into the cylindrical wall of the outer sleeve.

[0008] The aforementioned variable shaft diameter coupling has four connecting elongated holes on the annular surface of the outer sleeve connecting disc, which are evenly distributed around the circumference of the annular surface of the outer sleeve connecting disc.

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

[0010] The outer sleeve and inner sleeve of this utility model are detachably connected, and multiple inner sleeves with different inner diameters can be connected to drive shafts with different shaft diameters respectively; the outer sleeve connecting plate can be connected to mechanical equipment or another coupling to achieve the purpose of power transmission; the bolt positioning groove on the outer wall of the inner sleeve can prevent the inner sleeve positioning bolt from sliding, ensuring that the inner sleeve and outer sleeve are firmly connected.

[0011] This utility model has a simple structure and is easy to operate. It can connect transmission shafts with different shaft diameters, making the coupling a universal coupling. This reduces the need for customized coupling spare parts, lowers spare parts procurement costs, and allows for quick replacement, thus improving maintenance efficiency. Attached Figure Description

[0012] Figure 1 This is a schematic diagram of the structure of this utility model;

[0013] Figure 2 This is a structural diagram of the outer sleeve;

[0014] Figure 3 yes Figure 2 Side view;

[0015] Figure 4 This is a schematic diagram of the inner sleeve structure;

[0016] Figure 5 yes Figure 4 Side sectional view;

[0017] Figure 6This is a schematic diagram of the usage state of this utility model.

[0018] The markings in the diagram are as follows: outer sleeve 1, outer sleeve connecting plate 2, inner sleeve 3, inner sleeve positioning bolt 4, anti-loosening nut 5, connecting plate fixing bolt 6, positioning screw hole 7, connecting elongated hole 8, keyway 9, bolt positioning groove 10, drive shaft 11. Detailed Implementation

[0019] This utility model consists of an outer sleeve 1, an outer sleeve connecting plate 2, an inner sleeve 3, an inner sleeve positioning bolt 4, an anti-loosening nut 5, and a connecting plate fixing bolt 6.

[0020] Figure 1 , 2 As shown in Figure 3, the outer sleeve 1 is a cylindrical body, and the outer sleeve connecting plate 2 is a circular ring. The outer sleeve connecting plate 2 is fitted onto the outer rear end of the outer sleeve 1, and the outer sleeve 1 and the outer sleeve connecting plate 2 are connected as one unit.

[0021] The outer sleeve 1 has positioning screw holes 7 on its cylindrical wall. There are two rows of positioning screw holes 7, which are parallel to each other around the outer wall of the outer sleeve 1. There are four positioning screw holes 7 in each row. The four positioning screw holes 7 are evenly distributed around the circumference of the cylindrical wall of the outer sleeve 1. The inner sleeve positioning bolt 4 is connected to the inner sleeve 3 by the positioning screw holes 7.

[0022] The outer sleeve connecting plate 2 has four connecting elongated holes 8 on its annular surface. The four connecting elongated holes 8 are evenly distributed around the circumference of the annular surface of the outer sleeve connecting plate 2. The length direction of the four connecting elongated holes 8 coincides with the diameter of the annular surface of the outer sleeve connecting plate 2. Multiple connecting plate fixing bolts 6 are connected to the outer sleeve connecting plate 2 of mechanical equipment or another coupling through the four connecting elongated holes 8.

[0023] Figure 1 , 4 As shown in Figure 5, the inner sleeve 3 is a cylindrical body. The outer diameter of the inner sleeve 3 matches the inner diameter of the outer sleeve 1. The inner sleeve 3 is placed in the inner hole of the outer sleeve 1. The inner diameter of the inner sleeve 3 matches the outer diameter of the drive shaft 11. There is a keyway 9 on the inner wall of the inner sleeve 3 along the length direction of the inner sleeve 3. The inner sleeve 3 is connected to the drive shaft 11 by a key through the keyway 9.

[0024] The outer wall of the inner sleeve 3 has eight bolt positioning grooves 10, each arc-shaped. These grooves correspond to the two rows of positioning screw holes 7 on the outer sleeve 1. The inner sleeve positioning bolts 4 are tightened into the bolt positioning grooves 10 on the outer wall of the inner sleeve 3 through the positioning screw holes 7. These grooves prevent the inner sleeve positioning bolts 4 from slipping, ensuring a secure connection between the inner sleeve 3 and the outer sleeve 1. The inner sleeve positioning bolts 4 have anti-loosening nuts 5 that lock into the cylindrical wall of the outer sleeve 1, preventing them from loosening.

[0025] Figure 6 As shown, in use, the two drive shafts 11 have different diameters, and can be connected by two couplings. Each of the two drive shafts 11 is connected to one of the two couplings. The inner diameter of the inner sleeve 3 of each coupling matches the diameter of the two drive shafts 11. After the two couplings are connected to the two drive shafts 11, the two outer sleeve connecting discs 2 are connected through the connecting elongated holes 8 and the connecting disc fixing bolts 6, thus achieving the purpose of connecting the two drive shafts 11.

[0026] An embodiment of this utility model is as follows:

[0027] The outer sleeve 1 has a length of 250mm, an outer diameter of 220mm, an inner diameter of 160mm, and a positioning screw hole 7 with a diameter of 20mm.

[0028] The outer diameter of the outer sleeve connecting plate 2 is 600mm, the inner diameter is 220mm, the thickness is 50mm, and the length of the connecting long hole 8 is 145mm and the width is 26mm.

[0029] The inner sleeve 3 has a length of 250mm, an outer diameter of 220mm, an inner diameter of 160mm, and a keyway 9 has a width of 24mm and a depth of 9mm.

[0030] The inner sleeve positioning bolt 4 has a diameter of 20mm and a length of 70mm;

[0031] The diameter of the connecting plate fixing bolt 6 is 24mm and the length is 85mm.

Claims

1. A variable shaft diameter coupling, characterized by: It includes outer sleeve (1), outer sleeve connecting disc (2), inner sleeve (3), inner sleeve positioning bolt (4), connecting disc fixing bolt (6), outer sleeve (1) is a cylindrical body, outer sleeve connecting disc (2) is a ring, outer sleeve connecting disc (2) is sleeved on the outer end of outer sleeve (1), outer sleeve (1) and outer sleeve connecting disc (2) are connected into one, inner sleeve (3) is a cylindrical body, the outer diameter of inner sleeve (3) matches the inner hole diameter of outer sleeve (1), inner sleeve (3) is placed in the inner hole of outer sleeve (1), the cylindrical body wall of outer sleeve (1) has positioning screw hole (7), a plurality of positioning screw holes (7) are evenly distributed around the circumference of the cylindrical body wall of outer sleeve (1), inner sleeve positioning bolt (4) is connected tightly with the outer wall of inner sleeve (3) through positioning screw hole (7), the inner hole diameter of inner sleeve (3) matches the outer diameter of transmission shaft (11), the inner wall of inner sleeve (3) has key groove (9) along the length direction of inner sleeve (3), inner sleeve (3) is connected with transmission shaft (11) through key groove (9), the ring disc surface of outer sleeve connecting disc (2) has a plurality of connecting long holes (8) respectively, a plurality of connecting long holes (8) are evenly distributed around the circumference of the ring disc surface of outer sleeve connecting disc (2), the length direction of a plurality of connecting long holes (8) respectively coincides with the diameter of the ring of outer sleeve connecting disc (2), a plurality of connecting disc fixing bolts (6) are connected with the outer sleeve connecting disc (2) of mechanical equipment or another coupling through connecting long holes (8) respectively.

2. A variable shaft diameter coupling as claimed in claim 1, wherein: The inner sleeve is a plurality, the inner hole diameters of a plurality of inner sleeves (3) respectively match the shaft diameters of different transmission shafts (11) to be connected.

3. The variable shaft diameter coupling of claim 1, wherein: The positioning screw holes (7) on the cylindrical body wall of outer sleeve (1) are two rows, the two rows of positioning screw holes (7) respectively surround the outer wall of outer sleeve (1) in parallel, each row of positioning screw holes (7) is four, four positioning screw holes (7) are evenly distributed around the circumference of the cylindrical body wall of outer sleeve (1), the outer wall of inner sleeve (3) has eight bolt positioning grooves (10) respectively, the bolt positioning grooves (10) are circular arcs, eight bolt positioning grooves (10) are opposite to the two rows of positioning screw holes (7) of outer sleeve (1) respectively, eight inner sleeve positioning bolts (4) are connected tightly with the bolt positioning grooves (10) of the outer wall of inner sleeve (3) through the positioning screw holes (7) of the cylindrical body wall of outer sleeve (1) respectively, the inner sleeve positioning bolts (4) have lock nuts (5) locked with the cylindrical body wall of outer sleeve (1).

4. The variable shaft diameter coupling of claim 1, wherein: The ring disc surface of outer sleeve connecting disc (2) has four connecting long holes (8) respectively, four connecting long holes (8) are evenly distributed around the circumference of the ring disc surface of outer sleeve connecting disc (2).

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