CN216951077U - Swing motor rear cover locking structure - Google Patents
Swing motor rear cover locking structure Download PDFInfo
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- CN216951077U CN216951077U CN202220521014.8U CN202220521014U CN216951077U CN 216951077 U CN216951077 U CN 216951077U CN 202220521014 U CN202220521014 U CN 202220521014U CN 216951077 U CN216951077 U CN 216951077U
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- gland
- output shaft
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Abstract
The utility model provides a lid locking structure behind swing motor, including the cylinder, be provided with the output shaft along the axial in the cylinder, the outer periphery in the left end of output shaft is provided with the levogyration external screw thread, be provided with first tang on the output shaft on the right side of levogyration external screw thread, the surface of first tang is provided with the dextrorotation external screw thread, be provided with a first through-hole in the back lid, the right-hand member of first through-hole is provided with a second tang, the internal surface of second tang is provided with the dextrorotation internal thread, the dextrorotation internal thread cooperatees with the dextrorotation external screw thread, be provided with the gland in the first through-hole of back lid, be provided with the second through-hole in the gland, the internal surface of second through-hole is provided with the levogyration internal thread, the levogyration internal thread cooperatees with the levogyration external screw thread and makes gland fixed with the output shaft. The utility model realizes the interlocking purpose by utilizing the different rotation directions of the left-handed thread and the right-handed thread, replaces the traditional thread and spline locking structure, has simple and convenient processing and reliable locking, has longer stressed thread at the shaft end and is not easy to break when being impacted by load.
Description
Technical Field
The utility model relates to the field of machinery, in particular to hydraulic machinery, and particularly relates to a rear cover locking structure of a swing motor.
Background
Swing motors are increasingly used in the mechanical sector. In the prior art, a rear cover of a swing motor is connected and fastened with a cylinder barrel through a spline and a thread, the rear cover is placed into the cylinder barrel, the spline is connected with a shaft and is tightly pressed through a gland thread, and finally the spline is fixed and anti-loose through a screw, and the thread is interlocked with the spline.
Disclosure of Invention
The utility model aims to provide a rear cover locking structure of a swing motor, which aims to solve the technical problem that a rear cover of the swing motor in the prior art is easy to break when being subjected to bending moment and axial hydraulic thrust.
The utility model relates to a rear cover locking structure of a swing motor, which comprises a cylinder barrel, wherein an output shaft is axially arranged in the cylinder barrel, a left-handed external thread is arranged on the outer circumferential surface of the left end of the output shaft, a first spigot is arranged on the right side of the left-handed external thread on the output shaft, a right-handed external thread is arranged on the outer surface of the first spigot, a rear cover is arranged at the left end of the cylinder barrel, a first through hole is arranged in the rear cover, a second spigot is arranged at the right end of the first through hole, a right-handed internal thread is arranged on the inner surface of the second spigot, the right-handed internal thread is matched with the right-handed external thread to fix the rear cover with the output shaft, a gland is arranged in the first through hole of the rear cover, a second through hole is arranged in the gland, a left-handed internal thread is arranged on the inner surface of the second through hole, the left-handed internal thread is matched with the left-handed external thread to fix the gland with the output shaft, more than two threaded holes are arranged in the gland along the circumferential direction, any one of the threaded holes is provided with a screw, and the gland is fixed with the rear cover through the screw.
Furthermore, the threaded hole is a counter bore.
Compared with the prior art, the utility model has positive and obvious effect. The rear cover locking structure of the swing motor realizes the interlocking purpose by utilizing the different rotation directions of the left-handed threads and the right-handed threads, replaces the traditional thread and spline locking structure, is simple and convenient to process, is reliable to lock, has longer stressed threads at the shaft end, and is not easy to break when being impacted by load.
Drawings
Fig. 1 is a schematic cross-sectional view of a swing motor rear cover locking structure according to the present invention.
Detailed Description
The present invention will be further described with reference to the drawings and examples, but the present invention is not limited to the examples, and all similar structures and similar variations using the present invention shall fall within the scope of the present invention. The use of the directions of up, down, front, rear, left, right, etc. in the present invention is only for convenience of description and does not limit the technical solution of the present invention.
Example 1
As shown in figure 1, the utility model relates to a rear cover locking structure of a swing motor, which comprises a cylinder barrel 1, an output shaft 2 is arranged in the cylinder barrel 1 along the axial direction, a left-handed external thread 3 is arranged on the outer circumferential surface of the left end of the output shaft 2, a first stop 4 is arranged on the right side of the left-handed external thread 3 on the output shaft 2, a right-handed external thread 5 is arranged on the outer surface of the first stop 4, a rear cover 6 is arranged at the left end of the cylinder barrel 1, a first through hole is arranged in the rear cover 6, a second stop 8 is arranged at the right end of the first through hole, a right-handed internal thread 9 is arranged on the inner surface of the second stop 8, the right-handed internal thread 9 is matched with the right-handed external thread 5 to fix the rear cover 6 and the output shaft 2, a gland 10 is arranged in the first through hole of the rear cover 6, a second through hole is arranged in the gland 10, a left-handed internal thread 11 is arranged on the inner surface of the second through hole, the left-handed internal thread 11 is matched with the left-handed external thread 3 to fix the gland 10 and the output shaft 2, more than two threaded holes are formed in the gland 10 along the circumferential direction, a screw 12 is arranged in each threaded hole, and the gland 10 is fixed with the rear cover 6 through the screws 12.
Furthermore, the threaded hole is a counter bore.
Specifically, the cylinder barrel 1, the output shaft 2, the left-hand external thread, the left-hand internal thread and the like in the embodiment all adopt known schemes in the prior art, and those skilled in the art know the schemes and are not described herein again.
The working principle of the embodiment is as follows:
after the rear cover 6 is screwed into the cylinder barrel 1 rightwards, the pressing cover 10 is screwed down leftwards, and finally the screw 12 is screwed down.
The utility model realizes the interlocking purpose by utilizing the different rotation directions of the left-handed thread and the right-handed thread, replaces the traditional thread and spline locking structure, has simple and convenient processing and reliable locking, has longer stressed thread at the shaft end and is not easy to break when being impacted by load.
When the tilt cylinder piston gear sleeve slides to the root part leftwards, the rear cover 6 can be tightened by friction. If the rear cover 6 is loosened during loaded operation, the rear cover moves back anticlockwise and right rubs against the gland 10, and the gland 10 is tightened rightwards due to the anticlockwise friction of the rear cover 6 because the gland 10 is a left-handed thread; furthermore, since the gland 10 is fixed to the rear cover 6 by the screw 12, if the gland 10 is loosened to the left, the gland 10 rotates clockwise, and the rear cover 6 is tightened to the right by the bolt, so that the rear cover 6 and the gland 10 are interlocked.
The above embodiment is designed for the swing cylinder when the cylinder teeth are left-handed threads, and if the cylinder teeth are right-handed threads, the thread directions of the rear cover 6 and the gland 10 can be changed.
Claims (2)
1. The utility model provides a lid locking structure behind swing motor which characterized in that: comprises a cylinder barrel (1), an output shaft (2) is axially arranged in the cylinder barrel (1), a left-hand external thread (3) is arranged on the outer circumferential surface of the left end of the output shaft (2), a first spigot (4) is arranged on the right side of the left-hand external thread (3) on the output shaft (2), a right-hand external thread (5) is arranged on the outer surface of the first spigot (4), a rear cover (6) is arranged at the left end of the cylinder barrel (1), a first through hole is arranged in the rear cover (6), a second spigot (8) is arranged at the right end of the first through hole, a right-hand internal thread (9) is arranged on the inner surface of the second spigot (8), the right-hand internal thread (9) is matched with the right-hand external thread (5) to fix the rear cover (6) and the output shaft (2), a gland (10) is arranged in the first through hole of the rear cover (6), a second through hole is arranged in the gland (10), and a left-hand internal thread (11) is arranged on the inner surface of the second through hole, the left-handed internal thread (11) is matched with the left-handed external thread (3) to fix the gland (10) with the output shaft (2), more than two threaded holes are formed in the gland (10) along the circumferential direction, a screw (12) is respectively arranged in any one threaded hole, and the gland (10) is fixed with the rear cover (6) through the screw (12).
2. The swing motor rear cover locking structure according to claim 1, wherein: the threaded hole is a counter bore.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202220521014.8U CN216951077U (en) | 2022-03-11 | 2022-03-11 | Swing motor rear cover locking structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202220521014.8U CN216951077U (en) | 2022-03-11 | 2022-03-11 | Swing motor rear cover locking structure |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN216951077U true CN216951077U (en) | 2022-07-12 |
Family
ID=82295890
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202220521014.8U Active CN216951077U (en) | 2022-03-11 | 2022-03-11 | Swing motor rear cover locking structure |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN216951077U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116538166A (en) * | 2023-06-25 | 2023-08-04 | 江苏恒立液压股份有限公司 | Large-load swing oil cylinder with single-side output torque and manufacturing method thereof |
-
2022
- 2022-03-11 CN CN202220521014.8U patent/CN216951077U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116538166A (en) * | 2023-06-25 | 2023-08-04 | 江苏恒立液压股份有限公司 | Large-load swing oil cylinder with single-side output torque and manufacturing method thereof |
| CN116538166B (en) * | 2023-06-25 | 2023-10-24 | 江苏恒立液压股份有限公司 | Large-load swing oil cylinder with single-side output torque and manufacturing method thereof |
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