Transmission shaft structure stable in operation

Abstract

The utility model discloses a transmission shaft structure stable in operation, which comprises a connecting sleeve, a shaft rod, a shaft sleeve, a main shaft tube and a clamping piece, the shaft sleeve is sleeved on the outer side of the main shaft tube, and two bearings are arranged between the shaft sleeve and the main shaft tube; the spindle pipe is sleeved with an inner limiting pipe, an outer limiting pipe and a corrugated gasket, one end of the inner limiting pipe is connected with an inner ring of the first bearing, and the other end of the inner limiting pipe is connected with an inner ring of the second bearing through the corrugated gasket in a compressed state; the two ends of the outer limiting pipe are connected with the outer rings of the two bearings correspondingly. One end of the clamping piece is inserted into the main shaft pipe and connected with the shaft rod, and the other end of the clamping piece is located on the outer side of the main shaft pipe. The shaft rod is provided with a step structure, the shaft rod is sleeved with a spring, and the spring is pressed between the step structure and the main shaft pipe. According to the utility model, the corrugated gasket and the spring are arranged, and the spring is allowed to move axially, so that the movement can be controlled and limited by additionally arranging the corrugated gasket, and the axial stability is further improved.

Description

Technical Field

[0001] The utility model relates to the technical field of grinders, and specifically relates to a transmission shaft structure with stable operation. Background Art

[0002] In modern life, the care and beautification of nails are increasingly valued by people. As a commonly used nail care tool, the performance of a nail grinding machine directly affects the user experience. However, there are many problems in the existing transmission shaft structure of nail grinding machines during actual use.

[0003] The traditional transmission shaft of a nail grinding machine usually adopts a relatively simple design, with insufficient structural stability and easy to shake during high-speed rotation. Since nail grinding requires high precision, the shaking of the transmission shaft will cause the movement trajectory of the grinding head on the nail surface to be unstable, thus affecting the grinding effect. For example, the grinding may be uneven, with some areas being over-ground and some areas being under-ground, unable to meet the requirements of users for fine nail grinding.

[0004] In addition, during the use of a nail grinding machine, due to the wear of the grinding rod or the inapplicability of the installed grinding rod, the grinding rod needs to be frequently replaced. When replacing the grinding rod of the traditional nail grinding machine, a protective structure at the clamping end of the transmission shaft of the grinding machine is required for replacement, resulting in the problem of inconvenient replacement of the grinding rod. Summary of the Utility Model

[0005] The purpose of the utility model is to provide a transmission shaft structure with stable operation, aiming to improve the problems of insufficient structural stability of the transmission shaft of the traditional nail grinding machine, easy to shake during high-speed rotation, unable to ensure fine grinding of nails, and inconvenient replacement of the grinding rod.

[0006] The utility model is realized as follows: A transmission shaft structure with stable operation includes a connecting sleeve, and also includes a shaft rod, a shaft sleeve, a main shaft tube, and a clamping member. One end of the shaft rod is connected to the motor rotating shaft through the connecting sleeve, and the other end of the shaft rod is inserted into the main shaft tube; the shaft sleeve is sleeved outside the main shaft tube, and two bearings are installed between the shaft sleeve and the main shaft tube; an inner limiting tube, an outer limiting tube, and a corrugated gasket are sleeved outside the main shaft tube. One end of the inner limiting tube is connected to the inner ring of the first bearing, and the other end is connected to the inner ring of the second bearing through a corrugated gasket in a compressed state; both ends of the outer limiting tube are respectively connected to the outer rings of the two bearings; one end of the clamping member is inserted into the main shaft tube and connected to the shaft rod, and the other end of the clamping member is located outside the main shaft tube; a stepped structure is arranged on the shaft rod, and a spring is sleeved on the shaft rod, and the spring is pressed between the stepped structure and the main shaft tube.

[0007] Further, the clamping member is integrally in a circular tube shape, and a plurality of opening and closing slits are uniformly arranged along the circumferential direction at one end of the clamping member far from the shaft rod, and the grinding rod is inserted into the clamping member.

[0008] Further, a conical portion is provided at one end of the clamping member far from the shaft rod, the opening and closing slits penetrate through the conical portion, and a conical bayonet matching the conical portion is provided at one end of the main shaft tube through which the clamping member passes. Under the action of the spring, the conical bayonet squeezes the conical portion, so that the opening and closing slits are closed to clamp the grinding rod.

[0009] Further, an internal thread structure is provided at one end of the clamping member connected to the shaft rod, an external thread structure is provided at one end of the shaft rod inserted into the main shaft tube, and the external thread structure of the shaft rod is threadedly installed in the internal thread structure of the clamping member.

[0010] Further, a cross-shaped hole is provided in the connecting sleeve, and cross-shaped insertion rod structures are provided at one ends of the motor rotating shaft and the shaft rod far from the main clamping member, and the cross-shaped insertion rod structures of the motor rotating shaft and the shaft rod are both inserted into the cross-shaped hole of the connecting sleeve.

[0011] Further, a second sealing ring installation groove is provided on the outer wall of the rod body of the shaft rod near the cross-shaped insertion rod structure, a second shock-absorbing sealing rubber ring is provided in the second sealing ring installation groove, and the second sealing ring installation groove is inserted into the connecting sleeve.

[0012] Further, a sleeve is sleeved on one end of the main shaft tube connected to the spring, the main shaft tube and the sleeve are fixedly connected, the sleeve is simultaneously sleeved on the spring and the shaft rod, a limiting ring is provided on the shaft rod, and there is a gap between the sleeve and the limiting ring when the clamping member clamps the grinding rod; a first sealing ring installation groove is provided on the outer wall of the rod body of the shaft rod located in the sleeve, a first shock-absorbing sealing rubber ring is provided in the first sealing ring installation groove, and the first shock-absorbing sealing rubber ring is pressed between the sleeve and the shaft rod.

[0013] Further, a first installation through hole for the main shaft tube to pass through is provided at one end of the shaft sleeve, a shaft sleeve cover is provided at the other end of the shaft sleeve, the shaft sleeve cover is threadedly connected to the shaft sleeve, and a second installation through hole for the sleeve to pass through is provided on the shaft sleeve cover.

[0014] Further, a push tube is sleeved on the main shaft tube, the push tube includes a circular tube portion, the circular tube portion passes through the first installation through hole of the shaft sleeve, one end of the circular tube portion located inside the shaft sleeve is connected to the inner ring of the bearing, and a retaining ring portion is provided on the outer wall of the sleeve body of the circular tube portion located inside the shaft sleeve, the cross section of the retaining ring portion is in an L shape, the retaining ring portion cannot pass through the first installation through hole of the shaft sleeve, and an L-shaped retaining ring structure matching the retaining ring portion is provided at one end of the shaft sleeve provided with the first installation through hole.

[0015] Furthermore, a third sealing ring installation groove is provided on the shaft sleeve cover, and a third shock-absorbing sealing rubber ring is provided in the third sealing ring installation groove; a fourth sealing ring installation groove is provided on the outer wall of the shaft sleeve away from the shaft sleeve cover, and a fourth shock-absorbing sealing rubber ring is provided in the fourth sealing ring installation groove.

[0016] Compared with the prior art, the beneficial effects of the utility model are:

[0017] 1. The utility model is provided with a corrugated gasket and a spring, and the spring has the dual effects of shock absorption and automatic pushing of the main shaft tube to clamp the clamping piece and the grinding rod. The spring itself allows axial movement, and the addition of a corrugated gasket helps to control and limit this movement, thereby improving axial stability, so that when the motor of the nail grinding machine drives the grinding rod to rotate at high speed, it is not easy to shake, which can effectively ensure fine grinding of the nails.

[0018] 2. When the spring undergoes compression and expansion cycles, the corrugated gasket helps to evenly distribute the applied load, prevent local stress concentration, and help to increase the service life of the utility model.

[0019] 3. The utility model is provided with a push tube, which is fixedly connected to the spindle tube. When the grinding rod needs to be replaced, the push tube is pushed, and the push tube drives the spindle tube to compress the spring, so that the conical bayonet of the spindle tube completely disengages from the conical part of the clamping piece, so that the opening and closing seam of the clamping piece is completely opened, and the grinding rod can be replaced very conveniently. After the replacement is completed, the push tube is released, and under the action of the spring, the conical bayonet of the spindle tube squeezes the conical part again, so that the opening and closing seam is closed to clamp the grinding rod.

[0020] 4. The utility model is provided with a plurality of shock-absorbing sealing rubber rings, which can reduce the vibration generated between two parts that are matched and connected to each other, and further improve the stability of the utility model during operation. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 It is a three-dimensional structural schematic diagram of the utility model;

[0022] Figure 2 It is the front view of the utility model;

[0023] Figure 3 yes Figure 2 AA section view;

[0024] Figure 4 It is a three-dimensional structural schematic diagram of the utility model when the shaft sleeve is removed;

[0025] Figure 5 It is a three-dimensional structural schematic diagram of the shaft rod of the utility model;

[0026] Figure 6It is a three-dimensional structural schematic diagram of the clamping member of the present utility model;

[0027] Figure 7 It is a three-dimensional structural schematic diagram of the bushing cover of the present utility model;

[0028] Figure 8 It is a cross-sectional view of the connection position between the push tube and the bushing of the bushing cover of the present utility model.

[0029] In the figure: 1, inner limiting tube; 2, connecting sleeve; 3, shaft rod; 301, step structure; 302, external thread structure; 303, cross insert rod structure; 304, first sealing ring installation groove; 305, second sealing ring installation groove; 4, bushing; 401, fourth sealing ring installation groove; 5, main shaft tube; 6, clamping member; 601, opening and closing seam; 602, tapered portion; 7, outer limiting tube; 8, corrugated gasket; 9, bearing; 10, grinding rod; 11, spring; 12, sleeve; 13, limiting ring; 14, first shock-absorbing sealing rubber ring; 15, second shock-absorbing sealing rubber ring; 16, bushing cover; 1601, third sealing ring installation groove; 17, push tube; 1701, round tube portion; 1702, retaining ring portion; 18, third shock-absorbing sealing rubber ring; 19, fourth shock-absorbing sealing rubber ring. Detailed implementation manners

[0030] In the present utility model, unless otherwise clearly defined and limited, terms such as "installation", "connection", "linkage", "fixation" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or integrated; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium, and it can be the internal communication of two components or the interaction relationship between two components. For those of ordinary skill in the art, the specific meanings of the above terms in the present utility model can be understood according to specific circumstances.

[0031] The following will be further described in conjunction with the accompanying drawings and specific embodiments:

[0032] A drive shaft structure with stable operation, such as Figures 1-4As shown, it includes a connecting sleeve 2, a shaft rod 3, a shaft sleeve 4, a main shaft tube 5 and a clamping member 6. The shaft sleeve 4 is sleeved outside the main shaft tube 5, and two bearings 9 are installed between the shaft sleeve 4 and the main shaft tube 5. The inner diameter of the bearing 9 is the same as the outer diameter of the main shaft tube 5, and the outer diameter of the bearing 9 is the same as the inner diameter of the shaft sleeve 4. An inner limiting tube 1, an outer limiting tube 7 and a corrugated gasket 8 are sleeved outside the main shaft tube 5. The inner diameter of the outer limiting tube 7 is the same as the outer diameter of the main shaft tube 5, the outer diameter of the inner limiting tube 1 is the same as the inner diameter of the shaft sleeve 4, and the inner diameter of the outer limiting tube 7 is greater than the outer diameter of the inner limiting tube 1. One end of the inner limiting tube 1 is connected to the inner ring of the first bearing 9, and the other end is connected to the inner ring of the second bearing 9 through the corrugated gasket 8 in a compressed state. Both ends of the outer limiting tube 7 are connected to the outer rings of the two bearings 9. Therefore, the inner limiting tube 1 is used to limit the inner ring of the bearing 9, which can effectively prevent the two bearings 9 from moving in the opposite direction and affecting the coaxial effect. The outer limiting tube 7 is used to limit the outer ring of the bearing 9.

[0033] As Figure 3 , Figure 7 and Figure 8 As shown, one end of the shaft sleeve 4 is provided with a first installation through hole for the main shaft tube 5 to pass through. The other end of the shaft sleeve 4 is open, and a shaft sleeve cover 16 is threadedly installed at the open end of the shaft sleeve 4. A push tube 17 is also sleeved on the main shaft tube 5. The push tube 17 is fixedly connected to the main shaft tube 5. The push tube 17 includes a circular tube portion 1701. The circular tube portion 1701 passes through the first installation through hole of the shaft sleeve 4. One end of the circular tube portion 1701 located inside the shaft sleeve 4 is connected to the inner ring of the bearing 9. Therefore, the circular tube portion 1701 of the push tube 17 also has the function of limiting the bearing 9 and can push the bearing 9 at the same time. A retaining ring portion 1702 is provided on the outer wall of the sleeve body of the circular tube portion 1701 of the bearing 9 located inside the shaft sleeve 4. The cross section of the retaining ring portion 1702 is L-shaped, and the retaining ring portion 1702 cannot pass through the first installation through hole of the shaft sleeve 4. An L-shaped retaining ring structure adapted to the retaining ring portion 1702 is provided at one end of the shaft sleeve 4 provided with the first installation through hole. A third sealing ring installation groove 1601 is provided on the shaft sleeve cover 16, and a third shock-absorbing sealing rubber ring 18 is provided in the third sealing ring installation groove 1601. A fourth sealing ring installation groove 401 is provided on the outer wall of the end of the shaft sleeve 4 away from the shaft sleeve cover 16, and a fourth shock-absorbing sealing rubber ring 19 is provided in the fourth sealing ring installation groove 401.

[0034] As Figure 1 , Figure 3 and Figure 5As shown, the connecting sleeve 2 is used to connect the nail grinding machine motor and the shaft rod 3, so that the nail grinding machine motor and the shaft rod 3 rotate synchronously. A cross-shaped hole is provided in the connecting sleeve 2, and cross-shaped plug rod structures 303 are provided at one ends of the motor rotating shaft and the shaft rod 3 connected to the connecting sleeve 2. The cross-shaped plug rod structures 303 of the motor rotating shaft and the shaft rod 3 are inserted into the cross-shaped hole of the connecting sleeve 2. The other end of the shaft rod 3 is inserted into the main shaft tube 5, and one end of the clamping member 6 is inserted into the main shaft tube 5 and is connected to the shaft rod 3. An internal thread structure is provided at one end of the clamping member 6 connected to the shaft rod 3, and an external thread structure 302 is provided at one end of the shaft rod 3 inserted into the main shaft tube 5. The external thread structure 302 of the shaft rod 3 is threadedly installed in the internal thread structure of the clamping member 6, so that the shaft rod 3 and the clamping member 6 rotate synchronously. The clamping member 6 is used to clamp the grinding rod 10. Therefore, the nail grinding machine motor can drive the grinding rod 10 to rotate synchronously. A step structure 301 is provided on the shaft rod 3, and a spring 11 is sleeved on the shaft rod 3. The spring 11 is pressed between the step structure 301 and the main shaft tube 5.

[0035] As Figure 3 , Figure 4 and Figure 6 shown, the clamping member 6 is integrally tubular, and the end of the clamping member 6 away from the shaft rod 3 is located outside the main shaft tube 5. Three opening and closing slits 601 are uniformly provided along the circumferential direction at the end of the clamping member 6 away from the shaft rod 3, and the grinding rod 10 is inserted into the clamping member 6. A tapered portion 602 is provided at the end of the clamping member 6 away from the shaft rod 3. The opening and closing slits 601 penetrate through the tapered portion 602. A conical bayonet adapted to the tapered portion 602 is provided at one end of the main shaft tube 5 through which the clamping member 6 passes. Under the action of the spring 11, the conical bayonet squeezes the tapered portion 602, so that the opening and closing slits 601 are closed to clamp the grinding rod 10.

[0036] As Figure 1 , Figure 3 and Figure 6 shown, a sleeve 12 is sleeved on one end of the main shaft tube 5 connected to the spring 11. The main shaft tube 5 and the sleeve 12 are fixedly connected. A second installation through hole for the sleeve 12 to pass through is provided on the shaft sleeve cover 16. The sleeve 12 is simultaneously sleeved on the spring 11 and the shaft rod 3. A limiting ring 13 is provided on the shaft rod 3. When the clamping member 6 clamps the grinding rod 10, there is a gap between the sleeve 12 and the limiting ring 13. This section of the gap leaves space for the pushing tube 17 to drive the main shaft tube 5 to compress the spring 11, for replacing the grinding rod 10. When the sleeve 12 touches the limiting ring 13, the conical bayonet of the main shaft tube 5 completely disengages from the tapered portion 602 of the clamping member 6, so that the opening and closing slits 601 of the clamping member 6 are completely opened. At this time, the grinding rod 10 can be replaced very conveniently. After the replacement is completed, the pushing tube 17 is loosened. Under the action of the spring 11, the conical bayonet of the main shaft tube 5 squeezes the tapered portion 602 again, so that the opening and closing slits 601 are closed to clamp the grinding rod 10.

[0037] AsFigure 3 and Figure 5 As shown in Figure 5 , a first sealing ring mounting groove 304 is provided on the outer wall of the rod body of the shaft rod 3 located in the sleeve 12. A first shock-absorbing sealing rubber ring 14 is provided in the first sealing ring mounting groove 304, and the first shock-absorbing sealing rubber ring 14 is pressed between the sleeve 12 and the shaft rod 3. A second sealing ring mounting groove 305 is provided on the outer wall of the rod body of the shaft rod 3 near the cross-shaped plug rod structure 303. A second shock-absorbing sealing rubber ring 15 is provided in the second sealing ring mounting groove 305. The second sealing ring mounting groove 305 is inserted into the connecting sleeve 2, so the second shock-absorbing sealing rubber ring 15 is also located in the connecting sleeve 2.

[0038] Principle of stable operation: The present utility model is provided with a corrugated gasket 8 and a spring 11. The spring 11 has a dual effect of shock absorption and automatically pushing the main spindle tube 5 to clamp the clamping member 6 and the grinding rod 10. The spring 11 itself allows axial movement. By adding the corrugated gasket 8, it helps to control and limit this movement, thereby improving the axial stability. In this way, when the motor of the nail grinding machine drives the grinding rod 10 to rotate at a high speed, it is not easy to generate shaking, and it can effectively ensure the fine grinding of the nails. When the spring 11 undergoes compression and expansion cycles, the corrugated gasket 8 helps to evenly distribute the applied load, prevent local stress concentration, and contribute to improving the service life of the present utility model.

[0039] The present utility model is provided with a push tube 17, and the push tube 17 is fixedly connected to the main spindle tube 5. When the grinding rod 10 needs to be replaced, push the push tube 17. The push tube 17 drives the main spindle tube 5 to compress the spring 11, and the conical bayonet of the main spindle tube 5 completely disengages from the conical part 602 of the clamping member 6, so that the opening and closing seam 601 of the clamping member 6 is completely opened. At this time, the grinding rod 10 can be very conveniently replaced. After the replacement is completed, release the push tube 17. Under the action of the spring 11, the conical bayonet of the main spindle tube 5 presses the conical part 602 again, so that the opening and closing seam 601 is closed to clamp the grinding rod 10.

[0040] In addition, the present utility model is provided with a plurality of shock-absorbing sealing rubber rings. The shock-absorbing sealing rubber rings can reduce the vibration generated between two components that are matched and connected to each other, and further improve the stability of the present utility model during operation.

[0041] The above is only the preferred embodiment of the present utility model and is not used to limit the present utility model. For those skilled in the art, the present utility model can have various changes and modifications. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present utility model shall be included in the protection scope of the present utility model.

Claims

1. A drive shaft structure with stable operation, including a connecting sleeve (2), characterized in that, It also includes a shaft rod (3), a shaft sleeve (4), a main shaft tube (5) and a clamping member (6). One end of the shaft rod (3) is connected to the motor rotating shaft through a connecting sleeve (2), and the other end of the shaft rod (3) is inserted into the main shaft tube (5); the shaft sleeve (4) is sleeved outside the main shaft tube (5), and two bearings (9) are installed between the shaft sleeve (4) and the main shaft tube (5); an inner limiting tube (1), an outer limiting tube (7) and a corrugated gasket (8) are sleeved outside the main shaft tube (5). One end of the inner limiting tube (1) is connected to the inner ring of the first bearing (9), and the other end is connected to the inner ring of the second bearing (9) through a corrugated gasket (8) in a compressed state; both ends of the outer limiting tube (7) are connected to the outer rings of the two bearings (9); one end of the clamping member (6) is inserted into the main shaft tube (5) and is connected to the shaft rod (3), and the other end of the clamping member (6) is located outside the main shaft tube (5); a stepped structure (301) is provided on the shaft rod (3), and a spring (11) is sleeved on the shaft rod (3), and the spring (11) is pressed between the stepped structure (301) and the main shaft tube (5).

2. A stable-running drive shaft structure according to claim 1, characterized in that The clamping member (6) is integrally tubular. A plurality of opening and closing slits (601) are uniformly arranged along the circumferential direction at the end of the clamping member (6) away from the shaft rod (3), and the grinding rod (10) is inserted into the clamping member (6).

3. A stable-running drive shaft structure according to claim 2, characterized in that, A conical portion (602) is provided at the end of the clamping member (6) away from the shaft rod (3), and the opening and closing slits (601) penetrate through the conical portion (602). A conical bayonet adapted to the conical portion (602) is provided at the end of the main shaft tube (5) through which the clamping member (6) passes. Under the action of the spring (11), the conical bayonet squeezes the conical portion (602) so that the opening and closing slits (601) are closed to clamp the grinding rod (10).

4. A drive shaft structure with stable operation according to claim 3, characterized in that, An internal thread structure is provided at the end of the clamping member (6) connected to the shaft rod (3), and an external thread structure (302) is provided at the end of the shaft rod (3) inserted into the main shaft tube (5). The external thread structure (302) of the shaft rod (3) is threadedly installed in the internal thread structure of the clamping member (6).

5. A drive shaft structure with stable operation according to claim 1, characterized in that, A cross-shaped hole is provided in the connecting sleeve (2). Cross-shaped plug rod structures (303) are provided at the ends of the motor rotating shaft and the shaft rod (3) away from the main clamping member (6). The cross-shaped plug rod structures (303) of the motor rotating shaft and the shaft rod (3) are inserted into the cross-shaped hole of the connecting sleeve (2).

6. The stable-running transmission shaft structure according to claim 5, characterized in that, A second sealing ring installation groove (305) is provided on the outer wall of the rod body of the shaft rod (3) near the cross-shaped plug rod structure (303). A second shock-absorbing sealing rubber ring (15) is provided in the second sealing ring installation groove (305), and the second sealing ring installation groove (305) is inserted into the connecting sleeve (2).

7. A stable-running drive shaft structure according to claim 1, characterized in that, A sleeve (12) is sleeved on one end of the main shaft tube (5) connected to the spring (11). The main shaft tube (5) and the sleeve (12) are fixedly connected. The sleeve (12) is simultaneously sleeved on the spring (11) and the shaft rod (3). A limiting ring (13) is arranged on the shaft rod (3). When the clamping member (6) clamps the grinding rod (10), there is a gap between the sleeve (12) and the limiting ring (13). A first sealing ring installation groove (304) is arranged on the outer wall of the rod body of the shaft rod (3) located in the sleeve (12). A first shock-absorbing sealing rubber ring (14) is arranged in the first sealing ring installation groove (304). The first shock-absorbing sealing rubber ring (14) is pressed between the sleeve (12) and the shaft rod (3).

8. A stable-running drive shaft structure according to claim 7, characterized in that, One end of the shaft sleeve (4) is provided with a first installation through hole for the main shaft tube (5) to pass through. The other end of the shaft sleeve (4) is provided with a shaft sleeve cover (16). The shaft sleeve cover (16) is threadedly connected to the shaft sleeve (4). The shaft sleeve cover (16) is provided with a second installation through hole for the sleeve (12) to pass through.

9. A drive shaft structure with stable operation according to claim 8, characterized in that, A push tube (17) is sleeved on the main shaft tube (5). The push tube (17) includes a circular tube part (1701). The circular tube part (1701) passes through the first installation through hole of the shaft sleeve (4). One end of the circular tube part (1701) located inside the shaft sleeve (4) is connected to the inner ring of the bearing (9). A retaining ring part (1702) is arranged on the outer wall of the sleeve body of the circular tube part (1701) located inside the shaft sleeve (4). The cross section of the retaining ring part (1702) is L-shaped. The retaining ring part (1702) cannot pass through the first installation through hole of the shaft sleeve (4). An L-shaped retaining ring structure adapted to the retaining ring part (1702) is arranged at one end of the shaft sleeve (4) provided with the first installation through hole.

10. A drive shaft structure with stable operation according to claim 8, characterized in that, A third sealing ring installation groove (1601) is arranged on the shaft sleeve cover (16). A third shock-absorbing sealing rubber ring (18) is arranged in the third sealing ring installation groove (1601). A fourth sealing ring installation groove (401) is arranged on the outer wall of one end of the shaft sleeve (4) away from the shaft sleeve cover (16). A fourth shock-absorbing sealing rubber ring (19) is arranged in the fourth sealing ring installation groove (401).

Images