Shaft-hub connecting device

Abstract

The utility model relates to the field of shaft-hub connecting devices, and discloses a shaft-hub connecting device which comprises a connecting shaft body and two clamping blocks, a hub body is slidably mounted on the surface of the connecting shaft body, and the size specification of the surface of the connecting shaft body is matched with the size specification of the inner wall of the hub body; the bottom ends of the two clamping blocks are fixedly connected with a left rotating ring and a right rotating ring correspondingly, the surfaces of the left rotating ring and the right rotating ring are rotationally installed on the inner wall of the connecting shaft body, clamping grooves are formed in the inner wall of the connecting shaft body and the inner wall of the hub body in a penetrating mode, and the surfaces of the clamping blocks are connected with the inner walls of the clamping grooves in a clamped mode. The clamping blocks are mounted in the clamping grooves in the connecting shaft body and the hub body, the left rotating ring and the right rotating ring are mounted at the bottom ends of the two clamping blocks, and the surfaces of the left rotating ring and the right rotating ring are rotationally connected with the inner wall of the connecting shaft body, so that the clamping blocks are controlled to be clamped with the inner walls of the clamping grooves by means of rotation of the left rotating ring and the right rotating ring in the connecting shaft body; and the condition that the clamping blocks are difficult to fit with the clamping grooves due to abrasion is effectively avoided.

Description

TECHNICAL FIELD

[0001] The present application relates to the field of shaft hub coupling devices, in particular to a shaft hub coupling device. BACKGROUND

[0002] The shaft hub refers to the shaft part connected with the shaft, commonly used in gear, pulley and other mechanical components, its main function is to connect with the shaft, so that the rotating parts (such as gears, cams, shaft couplings, etc.) are positioned and fixed on the shaft, so as to transmit motion and power, the shaft hub is an important connecting component in mechanical transmission, used to fix the rotating parts on the shaft, to ensure the effective transmission of motion and power, the shaft hub has various connection modes with the shaft, including key connection, spline connection, forming connection, expansion sleeve connection, pin connection, set screw connection and interference fit connection, among which, key and spline are the most common connection modes, the shaft hub is widely used in mechanical engineering, especially in equipment requiring accurate transmission of power and motion, such as gearboxes, transmission shafts, etc., the shaft hub is an indispensable part in mechanical transmission, which ensures the positioning and power transmission of rotating parts through various connection modes with the shaft, and its definition and application scenarios make it play an important role in mechanical engineering.

[0003] For the related technologies in the above, the inventors believe that the conventional shaft hub often adopts the connection mode of flat key when connecting, due to insufficient lubrication, improper installation and other factors after installation, the flat key is prone to wear under the vibration of long-time running of the installed equipment, which causes the size of the flat key and the clamping groove in the hub body to be mismatched, affecting the connection effect between the shaft hubs.

[0004] The above information disclosed in the background technology is only used to increase the understanding of the background technology of the present application, therefore, it can include prior art known by those skilled in the art. CONTENT OF THE UTILITY MODEL

[0005] In order to solve the problem of flat key wear affecting use after installation of the shaft hub, the present application provides a shaft hub coupling device.

[0006] The shaft hub coupling device provided by the present application adopts the following technical scheme:

[0007] A shaft hub coupling device, comprising a connecting shaft body and two clamping blocks, the surface of the connecting shaft body is slidably installed with a hub body, and the size specification of the surface of the connecting shaft body is matched with the size specification of the inner wall of the hub body, the bottom end of each of the two clamping blocks is fixedly connected with a left swivel ring and a right swivel ring, the surface of each of the left swivel ring and the right swivel ring is rotatably installed with the inner wall of the connecting shaft body, the inner wall of the connecting shaft body and the hub body is provided with a clamping groove, the surface of the clamping block is clamped with the inner wall of the clamping groove, the centers of the left swivel ring and the right swivel ring are on the same straight line, and the size specification of the surface of the left swivel ring and the right swivel ring is matched with the size specification of the inner wall of the connecting shaft body.

[0008] Preferably, one end of the left rotating ring is fixedly installed with a limiting spring, one end of the limiting spring away from the left rotating ring is fixedly connected with one end of the right rotating ring, and the center of the limiting spring is on the same straight line with the center of the connecting shaft body.

[0009] Preferably, one end of the clamping block is fixedly installed with a fixed block, the inner wall of the clamping groove is provided with a fixed groove matched with the fixed block, and the inner wall of the fixed groove is clamped with the surface of the fixed block.

[0010] Preferably, the inner wall of the left rotating ring and the right rotating ring is fixedly connected with a connecting frame, the surface of the connecting frame is clamped with a fixed bolt, and the surface of the fixed bolt is rotatably installed with the inner wall of the connecting shaft body.

[0011] Preferably, the surface of the connecting frame is provided with a plurality of limiting grooves, the inner wall of the limiting groove is clamped with a fixed disc, the inner wall of the fixed disc is movably connected with the surface of the fixed bolt, and the center of the fixed disc is on the same straight line with the center of the fixed bolt.

[0012] Preferably, one end of the fixed bolt is fixedly installed with a rotating disc, one end of the rotating disc is movably connected with one end of the connecting shaft body, and the center of the rotating disc is on the same straight line with the center of the fixed bolt.

[0013] Preferably, one end of the rotating disc is movably installed with a fixed ring, one end of the fixed ring is matched with the size specification of the inner wall of the connecting shaft body, the size specification of the surface of the fixed ring is interference fit with the size specification of the inner wall of the connecting shaft body, and the fixed ring is a rubber ring.

[0014] In summary, the present application has the following beneficial technical effects:

[0015] 1. By installing the clamping block in the clamping groove in the connecting shaft body and the hub, the bottom end of the two clamping blocks is installed with the left rotating ring and the right rotating ring, so as to rotate in the connecting shaft body by means of the left rotating ring and the right rotating ring, control the clamping of the clamping block and the inner wall of the clamping groove, effectively avoid the situation that the clamping block is difficult to fit with the clamping groove due to wear, install the limiting spring between the left rotating ring and the right rotating ring, so as to keep the clamping block clamped with the inner wall of the clamping groove by means of the limiting spring, install the fixed block at one end of the clamping block, clamp the surface of the fixed block with the fixed groove in the hub, so as to keep the clamping block clamped with the clamping groove by means of the fixed block and the fixed groove, effectively improve the fixing effect of the device; compared with the prior art, thereby improving the connection effect of the shaft hub;

[0016] 2. Connecting brackets can also be installed on the surfaces of the left and right rotating rings. The surfaces of the connecting brackets are fitted with fixing bolts to secure the left and right rotating rings. Fixing discs are mounted on the surfaces of the fixing bolts, with one end engaging with a limiting groove on the surface of the connecting bracket. This enhances the fixing effect of the fixing bolts on the connecting brackets. A rotating disc is mounted on one end of the fixing bolt, allowing for easy control of bolt rotation, facilitating installation and disassembly. A rubber fixing ring is mounted on one end of the rotating disc to increase friction between the rotating disc and the connecting shaft, effectively improving the device's performance. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the overall structure of a hub connection device according to an embodiment of the application;

[0018] Figure 2 This is a schematic diagram of the card block structure in an embodiment of the application;

[0019] Figure 3 This is a side view of the embodiment of the application.

[0020] Figure 4 This is a schematic diagram of the structure at point A in the embodiment of the application.

[0021] Explanation of reference numerals in the attached drawings: 1. Connecting shaft; 2. Hub; 3. Locking block; 4. Left rotating ring; 5. Right rotating ring; 6. Locking groove; 7. Limiting spring; 8. Fixing block; 9. Fixing groove; 10. Connecting bracket; 11. Fixing bolt; 12. Limiting groove; 13. Fixing disc; 14. Rotating disc; 15. Fixing ring. Detailed Implementation

[0022] The following is in conjunction with the appendix Figure 1 —4. This application will be described in further detail.

[0023] This application discloses a shaft-hub connection device, referring to... Figure 1 - Figure 2 The assembly includes a connecting shaft 1, which is inserted into a hub 2. A locking block 3 is installed in a slot 6 within the connecting shaft 1 and hub 2. A left-hand rotating ring 4 and a right-hand rotating ring 5 are installed at the bottom of each locking block 3. The surfaces of the left-hand rotating ring 4 and the right-hand rotating ring 5 are rotatably connected to the inner wall of the connecting shaft 1, allowing the locking block 3 to engage with the inner wall of the slot 6 via the rotation of the left-hand rotating ring 4 and the right-hand rotating ring 5. This facilitates the connection between the connecting shaft 1 and the hub 2, ensuring effective transmission of motion and power, improving the connection effect between the shaft and hub, and effectively preventing wear of the locking block 3 that makes it difficult to fit into the slot 6.

[0024] Reference Figure 2The limiting spring 7 is installed between the left rotating ring 4 and the right rotating ring 5, so that the limiting spring 7 extrudes the left rotating ring 4 and the right rotating ring 5 to keep the clamping block 3 clamped with the inner wall of the clamping groove 6, thereby ensuring the limiting effect of the clamping block 3 on the clamping groove 6. One end of the clamping block 3 is provided with the fixed block 8, and the surface of the fixed block 8 is clamped with the fixed groove 9 in the hub body 2, so as to keep the clamping block 3 clamped with the clamping groove 6 by means of the fixed block 8 and the fixed groove 9, thereby effectively improving the fixing effect of the device, thereby avoiding the disconnection of the connecting shaft body 1 from the hub body 2.

[0025] With reference to Figure 2 Figure 4 The connecting frame 10 is installed on the surface of the left rotating ring 4 and the right rotating ring 5, the surface of the connecting frame 10 is provided with the fixed bolt 11, the fixed bolt 11 is threadedly connected with the inner wall of the connecting shaft body 1, so as to fix the left rotating ring 4 and the right rotating ring 5 on the surface of the connecting frame 10 by means of the fixed bolt 11, thereby fixing the position of the clamping block 3, avoiding the deformation of the limiting spring 7 caused by the pressure on the clamping block 3, and the deviation of the clamping block 3. The surface of the fixed bolt 11 is provided with the fixed disc 13, one end of the fixed disc 13 is clamped with the limiting groove 12 on the surface of the connecting frame 10, so as to improve the fixing effect of the connecting frame 10 by means of the fixed disc 13 and the limiting groove 12, thereby avoiding the slippage between the fixed bolt 11 and the connecting frame 10, and affecting the fixing effect of the clamping block 3. One end of the fixed bolt 11 is provided with the rotating disc 14, the surface of the rotating disc 14 is connected with one end of the connecting shaft body 1, so as to rotate the rotating disc 14 to control the fixed bolt 11, thereby facilitating the installation and disassembly of the staff, and being more convenient during maintenance. One end of the rotating disc 14 is provided with the fixed ring 15 made of rubber, the surface of the fixed ring 15 is connected with one end of the connecting shaft body 1, so as to improve the friction between the rotating disc 14 and the connecting shaft body 1 by means of the fixed ring 15, thereby improving the stability of the fixed bolt 11 at one end of the rotating disc 14.

[0026] The implementation principle of the hub coupling device is that the clamping block 3 is installed in the clamping groove 6 in the connecting shaft body 1 and the hub body 2, the bottom end of the two clamping blocks 3 is provided with the left rotating ring 4 and the right rotating ring 5, the surface of the left rotating ring 4 and the right rotating ring 5 is rotationally connected with the inner wall of the connecting shaft body 1, so as to rotate the left rotating ring 4 and the right rotating ring 5 in the connecting shaft body 1 to control the clamping block 3 to be clamped with the inner wall of the clamping groove 6, thereby effectively avoiding the difficulty in matching the clamping block 3 with the clamping groove 6 caused by the wear of the clamping block 3. The limiting spring 7 is installed between the left rotating ring 4 and the right rotating ring 5, so that the limiting spring 7 extrudes the left rotating ring 4 and the right rotating ring 5 to keep the clamping block 3 clamped with the inner wall of the clamping groove 6, thereby ensuring the limiting effect of the clamping block 3 on the clamping groove 6. One end of the clamping block 3 is provided with the fixed block 8, and the surface of the fixed block 8 is clamped with the fixed groove 9 in the hub body 2, so as to keep the clamping block 3 clamped with the clamping groove 6 by means of the fixed block 8 and the fixed groove 9, thereby effectively improving the fixing effect of the device, thereby avoiding the disconnection of the connecting shaft body 1 from the hub body 2. ​

[0027] The left and right rotating rings 4 and 5 are surface-mounted on the connecting frame 10, the fixing bolts 11 are surface-mounted on the connecting frame 10, the fixing bolts 11 are threadedly connected with the inner wall of the connecting shaft body 1, so that the left and right rotating rings 4 and 5 on the surface of the connecting frame 10 are fixed by the fixing bolts 11, thereby fixing the position of the clamping block 3, avoiding the situation that the clamping block 3 is offset due to the deformation of the limiting spring 7 caused by the pressure on the clamping block 3, the surface of the fixing bolt 11 is surface-mounted with the fixing disc 13, one end of the fixing disc 13 is clamped with the limiting groove 12 on the surface of the connecting frame 10, so as to improve the fixing effect of the connecting frame 10 by the fixing disc 13 and the limiting groove 12, avoiding the sliding between the fixing bolt 11 and the connecting frame 10 affecting the fixing effect of the clamping block 3, one end of the fixing bolt 11 is installed with the rotating disc 14, the surface of the rotating disc 14 is connected with one end of the connecting shaft body 1, so as to rotate the rotating disc 14 to control the rotation of the fixing bolt 11, thereby facilitating the installation and disassembly of the staff, and being more convenient during maintenance, one end of the rotating disc 14 is installed with the fixing ring 15 made of rubber material, the surface of the fixing ring 15 is connected with one end of the connecting shaft body 1, so as to improve the friction between the rotating disc 14 and the connecting shaft body 1 by the fixing ring 15, thereby improving the stability of the fixing bolt 11 at one end of the rotating disc 14.

[0028] The above are preferred embodiments of the present application, which do not limit the protection scope of the present application, therefore: any equivalent changes made on the structure, shape, principle of the present application shall be covered within the protection scope of the present application.

Claims

1. A shaft hub coupling device comprising a coupling shaft body (1) and two clamping blocks (3), characterized in that: The surface of the connecting shaft body (1) is slidingly installed with a hub body (2), and the size specification of the surface of the connecting shaft body (1) is adapted to the size specification of the inner wall of the hub body (2), the bottom end of each of the two clamping blocks (3) is fixedly connected with a left swivel ring (4) and a right swivel ring (5), the surface of each of the left swivel ring (4) and the right swivel ring (5) is rotatably installed with the inner wall of the connecting shaft body (1), and the inner wall of the connecting shaft body (1) and the hub body (2) is penetrated with a clamping groove (6).

2. A hub coupling device according to claim 1, wherein: The surface of the clamping block (3) is clamped with the inner wall of the clamping groove (6), the center of the left swivel ring (4) and the right swivel ring (5) is on the same straight line, and the size specification of the surface of the left swivel ring (4) and the right swivel ring (5) is adapted to the size specification of the inner wall of the connecting shaft body (1).

3. A hub coupling device as claimed in claim 1, wherein: One end of the left swivel ring (4) is fixedly installed with a limiting spring (7), one end of the limiting spring (7) away from the left swivel ring (4) is fixedly connected with one end of the right swivel ring (5), and the center of the limiting spring (7) is on the same straight line with the center of the connecting shaft body (1).

4. A hub coupling device as claimed in claim 1, wherein: One end of the clamping block (3) is fixedly installed with a fixed block (8), the inner wall of the clamping groove (6) is provided with a fixed groove (9) adapted to the fixed block (8), and the inner wall of the fixed groove (9) is clamped with the surface of the fixed block (8).

5. A hub coupling device as claimed in claim 1, wherein: The inner wall of each of the left swivel ring (4) and the right swivel ring (5) is fixedly connected with a connecting frame (10), the surface of the connecting frame (10) is clamped with a fixed bolt (11), and the surface of the fixed bolt (11) is rotatably installed with the inner wall of the connecting shaft body (1).

6. A hub coupling device as claimed in claim 5, wherein: The surface of the connecting frame (10) is provided with a plurality of limiting grooves (12), the inner wall of each of the limiting grooves (12) is clamped with a fixed disc (13), the inner wall of the fixed disc (13) is movably connected with the surface of the fixed bolt (11), and the center of the fixed disc (13) is on the same straight line with the center of the fixed bolt (11).

7. A hub coupling device as claimed in claim 5, wherein: One end of the fixed bolt (11) is fixedly installed with a rotating disc (14), one end of the rotating disc (14) is movably connected with one end of the connecting shaft body (1), and the center of the rotating disc (14) is on the same straight line with the center of the fixed bolt (11).

8. A hub coupling device according to claim 7, wherein: One end of the rotating disc (14) is movably installed with a fixed ring (15), one end of the fixed ring (15) is adapted to the size specification of the inner wall of the connecting shaft body (1), and the size specification of the surface of the fixed ring (15) is interference fit with the size specification of the inner wall of the connecting shaft body (1), and the fixed ring (15) is a rubber ring.

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