CN216895695U - Lubricating structure for rod and wire connecting shaft - Google Patents
Lubricating structure for rod and wire connecting shaft Download PDFInfo
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- CN216895695U CN216895695U CN202122558648.9U CN202122558648U CN216895695U CN 216895695 U CN216895695 U CN 216895695U CN 202122558648 U CN202122558648 U CN 202122558648U CN 216895695 U CN216895695 U CN 216895695U
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Abstract
The utility model discloses a rod and wire connecting shaft lubricating structure which comprises an external gear shaft sleeve, an internal gear ring, a connecting disc and a speed reducer, wherein the speed reducer comprises a speed reducer box body and an output shaft arranged through a bearing; the inner gear sleeve is arranged on the outer sides of the outer gear shaft sleeve and the output shaft through a gear meshing structure and an involute spline meshing structure, a rotary sealing assembly is arranged between the outer circle of the inner gear sleeve and the reducer box body, a bearing spacer bush is arranged between the end part of the inner side of the inner gear sleeve and a bearing, and a tool withdrawal groove is further formed in the involute spline meshing structure on the inner gear sleeve; the connecting disc is tightly attached to the end part of the output shaft and the step hole on the inner side of the inner gear ring and is closed through a fastener; and a lubricating oil path structure is arranged between the output shaft and the inner gear ring. The transmission shaft is novel in design and reasonable in structure, lubricating oil in the speed reducer box body is led to the transmission position by additionally arranging the lubricating oil way structure, the lubricating effect is improved, heat is dissipated timely, and the service life of the transmission shaft is prolonged.
Description
Technical Field
The utility model belongs to the technical field of transmission, and relates to a lubricating structure for a rod and wire connecting shaft.
Background
The coupling is a very common part in mechanical structures, and is a mechanical part used for coupling two shafts (a driving shaft and a driven shaft) in different mechanisms to rotate together so as to transmit torque. With the increasing situation of steel mills in recent years, cost reduction and efficiency improvement become the development trend of each steel mill, and each rod and wire production line requires efficient and continuous rolling equipment, which also creates a new challenge for related spare part industries. In order to meet the high-efficiency and continuous requirements of field production and reduce the equipment maintenance time, the structure of the transmission equipment needs to be improved;
as shown in fig. 1, the lubrication mode of the end of the speed reducer in the existing transmission shaft is grease lubrication, the transmission shaft needs to be oiled regularly in the using process, a large amount of time and manpower are needed for each maintenance, especially for the transmission shaft which is vertically arranged, maintenance personnel need to oil the frame of the speed reducer, time is consumed, and a falling risk also exists; the other disadvantage of grease lubrication is that the grease lubrication has poor fluidity, and heat generated by the transmission shaft during high-speed operation cannot be dissipated out in time through the grease, so that the grease is often ineffective due to high temperature generated by the high speed of the connecting shaft during high-speed operation, thereby affecting the lubrication of the tooth part.
SUMMERY OF THE UTILITY MODEL
Aiming at the problems of inconvenience in oil filling, easiness in failure of lubricating grease and the like in the existing speed reducer end lubricating mode in the prior art, the utility model provides a rod and wire connecting shaft lubricating structure.
The technical scheme for solving the technical problem of the utility model is as follows:
the utility model relates to a rod and wire connecting shaft lubricating structure, which comprises an external gear shaft sleeve, an internal gear ring, a connecting disc and a speed reducer, wherein the speed reducer comprises a speed reducer box body and an output shaft arranged in the speed reducer box body through a bearing, and the external gear shaft sleeve is arranged at the end part of the output shaft, and is characterized in that: the inner gear ring is sleeved on the outer sides of the outer gear shaft sleeve and the output shaft, a rotary sealing assembly is arranged between the outer circle of the inner gear ring and the reducer box body, a bearing spacer sleeve is arranged between the end part of the inner side of the inner gear ring and a bearing, a gear meshing structure and an involute spline meshing structure are respectively arranged between the inner side of the inner gear ring and the outer sides of the outer gear shaft sleeve and the output shaft, and a tool withdrawal groove is arranged at the position of the involute spline meshing structure; the connecting disc is tightly attached to the end part of the output shaft and the step hole on the inner side of the inner gear ring and is connected with the output shaft and the inner gear ring through fasteners; and a lubricating oil path structure for enabling lubricating oil in the speed reducer box body to flow into the gear meshing structure and the involute spline meshing structure is arranged between the output shaft and the inner gear ring.
As a further improvement of the technical scheme of the utility model, the lubricating oil path structure comprises a plurality of axial oil holes and radial oil holes which are correspondingly formed in the inner gear ring, one end of each axial oil hole is communicated with the gear meshing structure, and the other end of each axial oil hole is communicated with the speed reducer box body; one end of each radial oil hole is communicated with the corresponding axial oil hole, and the other end of each radial oil hole is communicated with the tool withdrawal groove.
Optionally, the lubricating oil path structure includes a plurality of axial oil holes and radial oil holes correspondingly formed in the inner gear ring, one end of each axial oil hole leads to the gear meshing structure, and the other end leads to the speed reducer box; one end of each radial oil hole is communicated with the corresponding axial oil hole, and the other end of each radial oil hole is communicated with the involute spline meshing structure.
Optionally, a plurality of radial through holes are drilled in the bearing spacer sleeve, an annular groove is formed in the inner circle of the bearing spacer sleeve, and each radial through hole is located in the annular groove; the inner gear ring and the output shaft are respectively provided with a plurality of corresponding 7-shaped oil holes and U-shaped oil holes, one end of each 7-shaped oil hole is communicated with the gear meshing structure, the other end of each 7-shaped oil hole is communicated with the corresponding U-shaped oil hole at the tool withdrawal groove, and the other end of each U-shaped oil hole is communicated with the annular groove of the bearing spacer.
Optionally, a plurality of radial through holes are drilled in the bearing spacer sleeve, an annular groove is formed in the inner circle of the bearing spacer sleeve, and each radial through hole is located in the annular groove; the inner gear ring and the output shaft are provided with several corresponding "7" -shaped oil holes and "U" -shaped oil holes, one end of each "7" -shaped oil hole leads to the gear engagement structure, the other end is communicated with the corresponding "U" -shaped oil hole at the involute spline engagement structure, and the other end of the "U" -shaped oil hole is communicated with the annular groove of the bearing spacer.
Optionally, a plurality of radial through holes are drilled in the bearing spacer sleeve, an annular groove is formed in the inner circle of the bearing spacer sleeve, and each radial through hole is located in the annular groove; the tail end of an external spline of an output shaft in the involute spline meshing structure is positioned at the inner circle of the bearing spacer; a plurality of corresponding 7-shaped oil holes are formed in the inner gear ring, one end of each 7-shaped oil hole is communicated with the gear meshing structure, and the other end of each 7-shaped oil hole is communicated with the tool withdrawal groove.
Optionally, a plurality of radial through holes are drilled in the bearing spacer sleeve, an annular groove is formed in the inner circle of the bearing spacer sleeve, and each radial through hole is located in the annular groove; the tail end of an external spline of an output shaft in the involute spline meshing structure is positioned at the inner circle of the bearing spacer; a plurality of corresponding 7-shaped oil holes are formed in the inner gear ring, one end of each 7-shaped oil hole is communicated with the gear meshing structure, and the other end of each 7-shaped oil hole is communicated with the involute spline meshing structure.
Compared with the prior art, the utility model has novel design, reasonable and various structure, and adopts the lubricating oil to replace grease lubrication by additionally arranging the lubricating oil path structure between the output shaft of the speed reducer and the inner gear ring and leading the lubricating oil in the box body of the speed reducer into the positions of the gear meshing structure and the involute spline meshing structure, thereby changing the traditional mode of injecting lubricating oil, greatly reducing the work of maintaining and injecting the lubricating oil for the transmission shaft and improving the lubricating effect of the tooth part of the transmission shaft.
Drawings
FIG. 1 is a schematic structural view of a reducer end of a conventional propeller shaft;
fig. 2 is a schematic structural view of a reduction gear end of a propeller shaft according to embodiment 2;
fig. 3 is a schematic structural view of the reduction gear end of the propeller shaft of embodiment 3;
fig. 4 is a schematic structural view of the reduction gear end of the propeller shaft of embodiment 4;
FIG. 5 is a schematic structural view of a reduction gear end of a propeller shaft according to embodiment 5;
fig. 6 is a schematic structural view of the reduction gear end of the propeller shaft of embodiment 6;
fig. 7 is a schematic structural view of the reduction gear end of the propeller shaft of embodiment 7;
in the figure: 1. external tooth axle sleeve, 2, ring gear, 3, connection pad, 4, output shaft, 5, rotary seal subassembly, 6, bearing spacer, 7, lubricating oil circuit structure, 8, gear engagement structure, 9, speed reducer, 10, involute spline engagement structure, 11, fastener, 12, bearing, 13, speed reducer box, 14, tool withdrawal groove, 15, axial oilhole, 16, radial oilhole, 17, "7" font oilhole, 18, "U" shape oilhole, 19, transmission shaft.
Detailed Description
The technical solution in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention. Unless defined otherwise, technical or scientific terms used herein shall have the ordinary meaning as understood by one of ordinary skill in the art to which this disclosure belongs. The present invention is not described in detail, but is known to those skilled in the art.
Example 1:
as shown in fig. 1 to 7, the rod and wire connecting shaft lubricating structure of the present invention comprises an external gear shaft sleeve 1, an internal gear ring 2, a connecting disc 3, an output shaft 4, a rotary sealing assembly 5, a bearing spacer 6 and a speed reducer 9, wherein the speed reducer 9 comprises a speed reducer box 13 and the output shaft 4 arranged in the speed reducer box 13 through a bearing 12, and the external gear shaft sleeve 1 is correspondingly arranged at the end position of the output shaft 4; the inner gear ring 2 is sleeved on the outer sides of the external gear shaft sleeve 1 and the output shaft 4, a rotary sealing assembly 5 for preventing lubricating oil in the speed reducer box 13 from overflowing is arranged between the outer circle of the inner gear ring and the speed reducer box 13, a bearing spacer 6 is arranged between the end part of the inner side of the inner gear ring and a bearing 12, a gear meshing structure 8 and an involute spline meshing structure 10 are respectively arranged between the inner side of the inner gear ring and the outer side of the external gear shaft sleeve 1 and the outer side of the output shaft 4, and a tool withdrawal groove 14 is arranged at the position of the involute spline meshing structure 10; the connecting disc 3 is tightly attached to the end part of the output shaft 4 and a step hole on the inner side of the inner gear ring 2 and is combined with the output shaft 4 and the inner gear ring 2 through a fastener 11; in the structure, the gear meshing structure 8 is that the outer side of the external gear shaft sleeve 1 and the inner circle of the inner gear ring 2 are respectively provided with the external gear and the internal gear which are matched with each other and are meshed with each other to form a meshing structure, and the involute spline meshing structure 10 is that the outer side of the output end and the inner side of the inner gear ring 2 are respectively provided with the external spline and the internal spline which are matched with each other and form a meshing structure; and a lubricating oil path structure 7 for enabling lubricating oil in the speed reducer box body 13 to flow into the gear meshing structure 8 and the involute spline meshing structure 10 is arranged between the output shaft 4 and the inner gear ring 2, namely, the lubricating oil in the speed reducer box body 13 is respectively sent to the two transmission positions of the gear meshing structure 8 and the involute spline meshing structure 10 through the lubricating oil path structure 7 at a gap formed between the inner gear ring 2 and the bearing 12, and the two meshing structures are respectively lubricated and cooled.
Example 2:
on the basis of the embodiment 1, as shown in fig. 2, the lubricating oil path structure 7 includes a plurality of axial oil holes 15 and radial oil holes 16 correspondingly formed in the inner gear ring 2, one end of each axial oil hole 15 is communicated with the gear meshing structure 8 and a gap formed between the inner gear ring 2 and the outer gear sleeve 1, and the other end is communicated with the reducer box 13; one end of each radial oil hole 16 is communicated with the corresponding axial oil hole 15, and the other end is communicated with the tool withdrawal groove 14. Through the structure, lubricating oil in the speed reducer box body 13 can be delivered to the gear meshing structure 8 through the axial oil hole 15, and meanwhile, after the lubricating oil in the axial oil hole 15 flows into the tool withdrawal groove 14 through the radial oil hole 16, the involute spline meshing structure 10 is lubricated.
Example 3:
on the basis of the embodiment 1, as shown in fig. 3, the lubricating oil path structure 7 includes a plurality of axial oil holes 15 and radial oil holes 16 correspondingly formed in the inner gear ring 2, one end of each axial oil hole 15 leads to the gear meshing structure 8 and is communicated with a gap formed between the inner gear ring 2 and the outer gear sleeve 1, and the other end leads to the reducer box 13; one end of each radial oil hole 16 is communicated with the corresponding axial oil hole 15, and the other end of each radial oil hole is communicated with the involute spline meshing structure 10. In this embodiment, the position of the radial oil hole 16 in embodiment 2 is moved to the involute spline meshing structure 10, and the internal spline of the ring gear 2 is drilled and communicated with the corresponding axial through hole 15, so that the lubricating oil in the speed reducer box 13 can be delivered to the gear meshing structure 8 through the axial oil hole 15, and the lubricating oil in the axial oil hole 15 flows into the involute spline meshing structure 10 through the radial oil hole 16, and the lubricating oil can be distributed on the whole spline meshing part by utilizing the gap between the tooth top, the tooth side and the tooth root of the spline.
Example 4:
on the basis of the embodiment 1, as shown in fig. 4, a plurality of radial through holes are drilled in the bearing spacer 6, and an annular groove is formed in the inner circle of the bearing spacer, each radial through hole is located in the annular groove, so that the lubricating oil in the reducer box body 13 flows into the annular groove through the radial through hole; the inner gear ring 2 and the output shaft 4 are respectively provided with a plurality of corresponding 7-shaped oil holes 17 and U-shaped oil holes 18, one end of each 7-shaped oil hole 17 is communicated with the gear meshing structure 8 and is communicated with a gap formed by the inner gear ring 2 and the outer gear shaft sleeve 1, the other end of each 7-shaped oil hole is communicated with the corresponding U-shaped oil hole 18 at the tool withdrawal groove 14, and the other end of each U-shaped oil hole 18 is communicated with an annular groove of the bearing spacer 6. When the lubricating oil-distributing device is used, lubricating oil in a speed reducer box body 13 enters an annular groove through a radial through hole in a bearing spacer 6 and then enters a U-shaped oil hole 18 to enter a tool withdrawal groove 14, a part of lubricating oil enters a gear meshing structure 8 through a 7-shaped oil hole 17 in an inner gear ring 2, and the other part of lubricating oil is in the tool withdrawal groove 14 and can be distributed on the whole spline meshing part by utilizing the gaps among the tooth tops, the tooth sides and the tooth roots of the splines in an involute spline meshing structure 10.
Example 5:
on the basis of embodiment 1, as shown in fig. 5, a plurality of radial through holes are drilled in the bearing spacer 6, and an annular groove is formed in the inner circle of the bearing spacer, each radial through hole is located in the annular groove, so that lubricating oil in the reducer box body 13 flows into the annular groove through the radial through hole; the inner gear ring 2 and the output shaft 4 are respectively provided with a plurality of corresponding 7-shaped oil holes 17 and U-shaped oil holes 18, one end of each 7-shaped oil hole 17 is communicated with the gear meshing structure 8 and is communicated with a gap formed by the inner gear ring 2 and the external gear shaft sleeve 1, the other end of each 7-shaped oil hole is communicated with the corresponding U-shaped oil hole 18 at the involute spline meshing structure 10, and the other end of each U-shaped oil hole 18 is communicated with an annular groove of the bearing spacer 6. In this embodiment, the other end of the "7" -shaped oil hole 17 in embodiment 4 is communicated with the corresponding "u" -shaped oil hole 18 at the relief groove 14, instead, the oil hole is communicated with the involute spline engagement structure 10, through the above structure, the lubricating oil in the speed reducer case 13 enters the annular groove through the radial through hole on the bearing spacer 6 and then enters the "u" -shaped oil hole 18, then a part of the lubricating oil enters the gear engagement structure 8 through the "7" -shaped oil hole 17 of the ring gear 2, and the other part of the lubricating oil utilizes the gap between the tooth top, tooth side and tooth root of the spline in the involute spline engagement structure 10, so that the lubricating oil can be distributed over the entire spline engagement part.
Example 6:
on the basis of embodiment 1, as shown in fig. 6, a plurality of radial through holes are drilled on the bearing spacer 6, and an annular groove is formed in the inner circle of the bearing spacer, each radial through hole is located in the annular groove, so that lubricating oil in the reducer box body 13 flows into the annular groove through the radial through hole; the tail end of an external spline of the output shaft 4 in the involute spline meshing structure 10 is positioned at the inner circle of the bearing spacer 6, namely, when the output shaft 4 is processed, the external spline of the output shaft 4 is extended to the inner circle position of the bearing spacer 6; the inner gear ring 2 is provided with a plurality of 7-shaped oil holes 17, one end of each 7-shaped oil hole 17 is communicated with the gear meshing structure 8 and communicated with a gap formed by the inner gear ring 2 and the outer gear shaft sleeve 1, and the other end of each 7-shaped oil hole is communicated with the tool withdrawal groove 14. When the lubricating oil is used, lubricating oil in the speed reducer box body 13 firstly enters the position of the involute spline meshing structure 10 through the annular groove of the bearing spacer 6, then enters the tool withdrawal groove 14, then flows into the 7-shaped oil hole 17, and finally flows to the position of the gear meshing structure 8.
Example 7:
on the basis of embodiment 1, as shown in fig. 7, a plurality of radial through holes are drilled in the bearing spacer 6, and an annular groove is formed in the inner circle of the bearing spacer, each radial through hole is located in the annular groove, so that lubricating oil in the reducer box body 13 flows into the annular groove through the radial through hole; the tail end of an external spline of the output shaft 4 in the involute spline meshing structure 10 is positioned at the inner circle of the bearing spacer 6, namely, when the output shaft 4 is processed, the external spline of the output shaft 4 is extended to the inner circle position of the bearing spacer 6; a plurality of 7-shaped oil holes 17 are formed in the inner gear ring 2, one end of each 7-shaped oil hole 17 is communicated with the gear meshing structure 8 and communicated with a gap formed by the inner gear ring 2 and the outer gear shaft sleeve 1, and the other end of each 7-shaped oil hole is communicated with the involute spline meshing structure 10. In this embodiment, that is, the other end of the "7" -shaped oil hole 17 in embodiment 6 is moved to the position of the involute spline meshing structure 10, and when the bearing spacer 6 is applied, the lubricating oil in the speed reducer case 13 firstly enters the position of the involute spline meshing structure 10 through the annular groove of the bearing spacer 6, and then flows to the position of the gear meshing structure 8 through the "7" -shaped oil hole 17.
The above description is only for the preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any changes or substitutions that can be easily conceived by those skilled in the art within the technical scope of the present invention are also included in the scope of the present invention. Therefore, the protection scope of the present invention shall be subject to the protection scope defined by the claims.
Claims (7)
1. The utility model provides a stick wire rod spiale lubricating structure, it includes external tooth axle sleeve (1), ring gear (2), connection pad (3) and speed reducer (9), this speed reducer (9) including speed reducer box (13) and through output shaft (4) of bearing (12) setting in this speed reducer box (13), external tooth axle sleeve (1) sets up in output shaft (4) tip position department, its characterized in that: the inner gear ring (2) is sleeved on the outer sides of the outer gear shaft sleeve (1) and the output shaft (4), a rotary sealing component (5) is arranged between the outer circle of the inner gear ring and a speed reducer box body (13), a bearing spacer bush (6) is arranged between the end part of the inner side of the inner gear ring and a bearing (12), a gear meshing structure (8) and an involute spline meshing structure (10) are respectively arranged between the inner side of the inner gear ring and the outer side of the outer gear shaft sleeve (1) and the outer side of the output shaft (4), and a tool withdrawal groove (14) is arranged at the position of the involute spline meshing structure (10); the connecting disc (3) is tightly attached to the end part of the output shaft (4) and a step hole on the inner side of the inner gear ring (2) and is combined with the output shaft (4) and the inner gear ring (2) through a fastener (11); and a lubricating oil path structure (7) for enabling lubricating oil in the speed reducer box body (13) to flow into the gear meshing structure (8) and the involute spline meshing structure (10) is arranged between the output shaft (4) and the inner gear ring (2).
2. The rod-wire connecting shaft lubricating structure according to claim 1, wherein: the lubricating oil path structure (7) comprises a plurality of axial oil holes (15) and radial oil holes (16) which are correspondingly formed in the inner gear ring (2), one end of each axial oil hole (15) is communicated with the gear meshing structure (8), and the other end of each axial oil hole is communicated with the speed reducer box body (13); one end of each radial oil hole (16) is communicated with the corresponding axial oil hole (15), and the other end is communicated with the tool withdrawal groove (14).
3. The rod-wire connecting shaft lubricating structure according to claim 1, wherein: the lubricating oil path structure (7) comprises a plurality of axial oil holes (15) and radial oil holes (16) which are correspondingly formed in the inner gear ring (2), one end of each axial oil hole (15) is communicated with the gear meshing structure (8), and the other end of each axial oil hole is communicated with the speed reducer box body (13); one end of each radial oil hole (16) is communicated with the corresponding axial oil hole (15), and the other end of each radial oil hole is communicated with the involute spline meshing structure (10).
4. The rod-wire connecting shaft lubricating structure according to claim 1, wherein: a plurality of radial through holes are drilled in the bearing spacer bush (6), an annular groove is formed in the inner circle of the bearing spacer bush, and each radial through hole is located in the annular groove; the inner gear ring (2) and the output shaft (4) are respectively provided with a plurality of corresponding 7-shaped oil holes (17) and U-shaped oil holes (18), one end of each 7-shaped oil hole (17) leads to the gear meshing structure (8), the other end of each 7-shaped oil hole is communicated with the corresponding U-shaped oil hole (18) at the tool withdrawal groove (14), and the other end of each U-shaped oil hole (18) is communicated with an annular groove of the bearing spacer (6).
5. The rod-wire connecting shaft lubricating structure according to claim 1, wherein: a plurality of radial through holes are drilled in the bearing spacer bush (6), an annular groove is formed in the inner circle of the bearing spacer bush, and each radial through hole is located in the annular groove; the inner gear ring (2) and the output shaft (4) are respectively provided with a plurality of corresponding 7-shaped oil holes (17) and U-shaped oil holes (18), one end of each 7-shaped oil hole (17) leads to the gear meshing structure (8), the other end of each 7-shaped oil hole is communicated with the corresponding U-shaped oil hole (18) at the involute spline meshing structure (10), and the other end of each U-shaped oil hole (18) is communicated with the annular groove of the bearing spacer sleeve (6).
6. The rod-wire connecting shaft lubricating structure according to claim 1, wherein: a plurality of radial through holes are drilled in the bearing spacer bush (6), an annular groove is formed in the inner circle of the bearing spacer bush, and each radial through hole is located in the annular groove; the tail end of an external spline of the output shaft (4) in the involute spline meshing structure (10) is positioned at the inner circle of the bearing spacer bush (6); a plurality of corresponding 7-shaped oil holes (17) are formed in the inner gear ring (2), one end of each 7-shaped oil hole (17) is communicated with the gear meshing structure (8), and the other end of each 7-shaped oil hole is communicated with the tool withdrawal groove (14).
7. The rod and wire connecting shaft lubricating structure according to claim 1, wherein: a plurality of radial through holes are drilled in the bearing spacer bush (6), an annular groove is formed in the inner circle of the bearing spacer bush, and each radial through hole is located in the annular groove; the tail end of an external spline of the output shaft (4) in the involute spline meshing structure (10) is positioned at the inner circle of the bearing spacer bush (6); a plurality of corresponding 7-shaped oil holes (17) are formed in the inner gear ring (2), one end of each 7-shaped oil hole (17) is communicated with the gear meshing structure (8), and the other end of each 7-shaped oil hole is communicated with the involute spline meshing structure (10).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122558648.9U CN216895695U (en) | 2021-10-22 | 2021-10-22 | Lubricating structure for rod and wire connecting shaft |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122558648.9U CN216895695U (en) | 2021-10-22 | 2021-10-22 | Lubricating structure for rod and wire connecting shaft |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN216895695U true CN216895695U (en) | 2022-07-05 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202122558648.9U Active CN216895695U (en) | 2021-10-22 | 2021-10-22 | Lubricating structure for rod and wire connecting shaft |
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| Country | Link |
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| CN (1) | CN216895695U (en) |
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2021
- 2021-10-22 CN CN202122558648.9U patent/CN216895695U/en active Active
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