Bevel gear transmission shaft structure

Abstract

A bevel gear transmission shaft structure comprises a bevel gear and a transmission shaft, and the bevel gear is connected with a mounting shaft sleeve coaxial with the bevel gear; the outer side of the mounting shaft sleeve is rotationally connected with a threaded connection shaft sleeve; a key groove is formed in the transmission shaft; the key groove is connected with a connecting key; an inserting groove corresponding to the connecting key is formed in the mounting shaft sleeve; the outer side of the bevel gear is connected with a threaded step in threaded connection with the threaded connection shaft sleeve. The transmission shaft is inserted into the installation shaft sleeve by rotating the threaded connection shaft sleeve, and the connection keys are inserted into the corresponding insertion grooves in the same direction. The transmission shaft can be rotated out of the installation shaft sleeve only by reversely rotating the threaded connection shaft sleeve, the transmission shaft is convenient to disassemble, and the bevel gear and the transmission shaft are not prone to being damaged due to the disassembly mode.

Description

Technical Field

[0001] The utility model relates to the technical field of machine tool gear transmission, and particularly relates to a bevel gear transmission shaft structure. Background Art

[0002] A bevel gear, also known as a conical gear, is an industrial product used for transmission between intersecting shafts; compared with cylindrical gears, it can change the transmission direction; many existing bevel gears are connected to the transmission shaft by a clamping method. For example, for the driven bevel gear of a binder with the publication number of CN220378825U, the transmission shaft of this patent is connected by clamping its own transmission shaft block on the connecting shaft of the bevel gear. Although this connection method is not easy to slip, it is very inconvenient to disassemble. To ensure a relatively stable connection between the bevel gear and the transmission shaft, the bevel gear and the transmission shaft are generally clamped tightly. Therefore, when disassembling, it is often necessary to knock them with other objects to separate the two. This knocking disassembly method is likely to damage the bevel gear or the transmission shaft. Content of the Utility Model

[0003] The utility model aims to solve the technical problem of providing a bevel gear transmission shaft structure that is not easily damaged during disassembly for the bevel gear and the transmission shaft.

[0004] To solve the above technical problem, the technical solution of a bevel gear transmission shaft structure of the utility model is as follows:

[0005] It includes a bevel gear and a transmission shaft. An installation shaft sleeve coaxial with itself is connected to the bevel gear; a threaded connection shaft sleeve is rotatably connected to the outside of the installation shaft sleeve; a keyway is provided on the transmission shaft; a connection key is connected to the keyway; a plug slot corresponding to the connection key is provided on the installation shaft sleeve; a threaded step threadedly connected to the threaded connection shaft sleeve is connected to the outside of the bevel gear; the transmission shaft is inserted into the installation shaft sleeve by rotating the threaded connection shaft sleeve, and the connection key is inserted into the corresponding plug slot in the same direction.

[0006] Keyways are provided on both the upper and lower sides of the transmission shaft; connection keys are connected in both keyways, and plug slots corresponding to the connection keys are respectively provided on the upper and lower sides of the inside of the corresponding installation shaft sleeve.

[0007] The connection key is connected to the transmission shaft by bolts.

[0008] A limiting device for limiting the rotation of the threaded connection bushing is connected to the threaded connection bushing; the limiting device includes a plug rod, a spring and an outer rod sleeve; an installation groove is formed in the threaded connection bushing; a sliding hole is formed at the bottom of the installation groove of the threaded connection bushing; a plug hole corresponding to the plug rod is formed in the bevel gear; the plug rod is slidably connected in the sliding hole, and one end of the plug rod is connected with a connection block, and the other end passes through the sliding hole and is inserted into the plug hole; one end of the spring is welded to the connection block, and the other end is welded to the bottom wall of the installation groove of the threaded connection bushing; the outer rod sleeve is sleeved on the connection block, and the outer rod sleeve is slidably connected to the installation groove; a lifting rod is connected to the outer end of the outer rod sleeve.

[0009] A threaded connection hole is formed in the side of the bottom end of the plug rod; a through hole corresponding to the threaded connection hole is formed in the side of the threaded connection bushing; when the plug rod is not inserted into the plug hole, the plug rod is connected to the threaded connection bushing through a connection bolt; the bottom end of the connection bolt passes through the through hole and is threadedly connected to the threaded connection hole.

[0010] Four limiting devices evenly distributed on the outer side of the threaded connection bushing are connected to the threaded connection bushing.

[0011] A limiting rotating ring coaxial with the installation bushing is connected to the outside of the installation bushing; the threaded connection bushing is rotatably connected to the limiting rotating ring.

[0012] The technical effects that can be achieved by the present utility model are as follows: When installing the bevel gear drive shaft structure of the present utility model, the threaded connection bushing is threadedly connected to the threaded step, and then the threaded connection bushing is rotated to insert the drive shaft into the installation bushing, and the connection key is inserted into the corresponding insertion slot in the same direction. At this time, the drive shaft is installed. When the drive shaft rotates, the bevel gear is driven to rotate through the connection key. When disassembling, only the threaded connection bushing needs to be rotated in the reverse direction to rotate the drive shaft out of the installation bushing. The disassembly is relatively convenient, and this disassembly method is not easy to damage the bevel gear and the drive shaft. Description of the Drawings

[0013] The following further describes the present utility model in detail in conjunction with the drawings and specific embodiments:

[0014] Figure 1 is a structural schematic diagram of a bevel gear drive shaft structure of the present utility model;

[0015] Figure 2 is Figure 1 an enlarged view of part A of

[0016] Figure 3 is a sectional view of a bevel gear drive shaft structure of the present utility model;

[0017] Figure 4 is Figure 3Enlarged view of part B;

[0018] Figure 5 is Figure 4 Enlarged view of part C;

[0019] Figure 6 Schematic structural diagram when connected by connecting bolts;

[0020] Figure 7 Exploded view of a bevel gear drive shaft structure of the present utility model;

[0021] Figure 8 is Figure 7 Enlarged view of part D. Specific embodiments

[0022] The present utility model will be further described in detail below with reference to the accompanying drawings.

[0023] Refer to Figures 1 to 8 .

[0024] A bevel gear drive shaft structure includes a bevel gear 1 and a drive shaft 2. An installation shaft sleeve 3 coaxial with itself is connected to the bevel gear 1. A threaded connection shaft sleeve 4 is rotatably connected to the outside of the installation shaft sleeve 3. Specifically, a limiting rotating ring 31 coaxial with itself is connected to the outside of the installation shaft sleeve 3, and the threaded connection shaft sleeve 4 is rotatably connected to the limiting rotating ring 31; a keyway 5 is provided on the drive shaft 2, a connection key 6 is connected to the keyway 5, and a plug-in slot 7 corresponding to the connection key 6 is provided on the installation shaft sleeve 3; specifically, keyways 5 are provided on both the upper and lower sides of the drive shaft 2, connection keys 6 are connected in both keyways 5, and plug-in slots 7 corresponding to the connection keys 6 are respectively provided on the upper and lower sides inside the corresponding installation shaft sleeve 3; more specifically, the connection key 6 is connected to the drive shaft 2 by bolts; a threaded step 8 threadedly connected to the threaded connection shaft sleeve 4 is connected to the outside of the bevel gear 1; the drive shaft 2 is inserted into the installation shaft sleeve 3 by rotating the threaded connection shaft sleeve 4, and the connection key 6 is inserted into the plug-in slot 7 corresponding to itself in the same direction.

[0025] In the connection between the drive shaft 2 and the bevel gear 1 of the present utility model, the threaded connection shaft sleeve 4 is threadedly connected to the threaded step 8, and then the threaded connection shaft sleeve 4 is rotated to insert the drive shaft 2 into the installation shaft sleeve 3, and the connection key 6 is inserted into the plug-in slot 7 corresponding to itself in the same direction (refer to Figure 3 , 4 ), at this time the installation of the drive shaft 2 is completed. During transmission, the drive shaft 2 drives the bevel gear 1 to rotate through the connection key 6.

[0026] Preferably, a limiting device for limiting the rotation of the threaded connection bushing 4 is connected to the threaded connection bushing 4. Through this limiting device, the relative rotation between the threaded connection bushing 4 and the bevel gear 1 is prevented, thereby preventing loosening between the transmission shaft 2 and the bevel gear 1. Specifically, the limiting device includes a plugging rod 11, a spring 12, and an outer rod sleeve 13. An installation groove 14 is formed on the threaded connection bushing 4, and a sliding hole 15 is formed at the bottom of the installation groove 14 of the threaded connection bushing 4. A plugging hole 16 corresponding to the plugging rod 11 is formed on the bevel gear 1. The plugging rod 11 is slidably connected in the sliding hole 15, and a connection block 17 is connected to one end of the plugging rod 11, and the other end passes through the sliding hole 15 and is plugged into the plugging hole 16. One end of the spring 12 is welded to the connection block 17, and the other end is welded to the bottom wall of the installation groove 14 of the threaded connection bushing 4. The outer rod sleeve 13 is sleeved on the connection block 17, and the outer rod sleeve 13 is slidably connected to the installation groove 14. A lifting rod 18 is connected to the outer end of the outer rod sleeve 13. Specifically, a threaded connection hole 21 is formed on the side of the bottom end of the plugging rod 11, and a through hole 22 corresponding to the threaded connection hole 21 is formed on the side of the threaded connection bushing 4. When the plugging rod 11 is not plugged into the plugging hole 16, the plugging rod 11 is connected to the threaded connection bushing 4 through a connection bolt 23. The bottom end of the connection bolt 23 passes through the through hole 22 and is threadedly connected to the threaded connection hole 21. Preferably, four limiting devices are evenly distributed on the outer side of the threaded connection bushing 4 and connected to the threaded connection bushing 4.

[0027] When the limiting device of the present utility model is in use (refer to Figure 5 ), at this time, the bottom end of the plugging rod 11 passes through the sliding hole 15 and is plugged into the plugging hole 16. The threaded connection bushing 4 and the bevel gear 1 cannot rotate relative to each other. The threaded connection bushing 4 is limited, and it is not easy for the bevel gear 1 and the transmission shaft 2 to become loose. When the bevel gear 1 and the transmission shaft 2 need to be disassembled, first pull the lifting rod 18 outwards to pull the outer rod sleeve 13 outwards to Figure 6 the state. At this time, the spring 12 is stretched, and the plugging rod 11 leaves the plugging hole 16. To prevent the spring 12 from restoring its original state and inserting the plugging rod 11 into the plugging hole 16 again, a connection bolt 23 is provided. The bottom end of the connection bolt 23 passes through the through hole 22 and is threadedly connected to the threaded connection hole 21. At this time, the limiting device fails, and the threaded connection bushing 4 and the bevel gear 1 can rotate relative to each other. By rotating the threaded connection bushing 4, the threaded step 8 on the transmission shaft 2 is disengaged from the threaded connection bushing 4, and the connection key 6 is disengaged from the plugging groove 7. Finally, the transmission shaft 2 can be taken out of the threaded connection bushing 4. Its disassembly is convenient, and this disassembly method is not easy to damage the transmission shaft 2 and the bevel gear 1.

Claims

1. A bevel gear transmission shaft structure, comprising a bevel gear (1) and a transmission shaft (2), characterized in that: The bevel gear (1) is connected to a mounting sleeve (3) coaxial with the bevel gear (1); the mounting sleeve (3) is rotatably connected to a threaded connecting sleeve (4) on its outer side; the transmission shaft (2) is provided with a keyway (5); the keyway (5) is connected to a connecting key (6); the mounting sleeve (3) is provided with a plug-in slot (7) corresponding to the connecting key (6); the bevel gear (1) is connected to a threaded step (8) threadedly connected to the threaded connecting sleeve (4) on its outer side; the transmission shaft (2) is inserted into the mounting sleeve (3) by rotating the threaded connecting sleeve (4), and the connecting key (6) is inserted into the plug-in slot (7) corresponding to the bevel gear (1) in the same direction.

2. A bevel gear transmission shaft structure according to claim 1, characterized in that: The transmission shaft (2) is provided with key slots (5) on both upper and lower sides; both key slots (5) are connected with connecting keys (6), and the corresponding mounting sleeve (3) is provided with plug-in slots (7) corresponding to the connecting keys (6) on both upper and lower sides.

3. A bevel gear transmission shaft structure according to claim 2, characterized in that: The connecting key (6) is connected to the transmission shaft (2) via bolts.

4. The bevel gear transmission shaft structure according to claim 1, characterized in that: The threaded connection sleeve (4) is connected to a limiting device for limiting itself so as to prevent itself from rotating; the limiting device comprises a plug-in rod (11), a spring (12) and an outer rod sleeve (13); a mounting groove (14) is provided on the threaded connection sleeve (4); a sliding hole (15) is provided at the bottom of the mounting groove (14) of the threaded connection sleeve (4); a plug-in hole (16) corresponding to the plug-in rod (11) is provided on the bevel gear (1); the plug-in rod (11) is slidably connected to the The plug-in rod (11) is inserted into the sliding hole (15), and one end of the plug-in rod (11) is connected to the connecting block (17), and the other end passes through the sliding hole (15) and is inserted into the plug-in hole (16); one end of the spring (12) is welded to the connecting block (17), and the other end is welded to the bottom wall of the mounting groove (14) of the threaded connecting sleeve (4); the outer rod sleeve (13) is sleeved on the connecting block (17), and the outer rod sleeve (13) is slidably connected to the mounting groove (14); the outer end of the outer rod sleeve (13) is connected to a lifting rod (18).

5. A bevel gear transmission shaft structure according to claim 4, characterized in that: A threaded connection hole (21) is formed on the side of the bottom end of the plug-in rod (11); a through hole (22) corresponding to the threaded connection hole (21) is formed on the side of the threaded connection sleeve (4); when the plug-in rod (11) is not inserted into the plug-in hole (16), the plug-in rod (11) is connected to the threaded connection sleeve (4) via a connecting bolt (23); the bottom end of the connecting bolt (23) passes through the through hole (22) and is threadedly connected to the threaded connection hole (21).

6. A bevel gear transmission shaft structure according to claim 4 or 5, characterized in that: The threaded connection sleeve (4) is connected to four limit devices which are evenly distributed on the outer side of the threaded connection sleeve (4).

7. The bevel gear transmission shaft structure according to claim 1, characterized in that: The outer side of the installation sleeve (3) is connected to a limiting swivel ring (31) coaxial with the installation sleeve; the threaded connection sleeve (4) is rotatably connected to the limiting swivel ring (31).

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