CN220302536U - Steel shaft, hoisting assembly for hot working steel shaft and hoisting system - Google Patents
Steel shaft, hoisting assembly for hot working steel shaft and hoisting system Download PDFInfo
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- CN220302536U CN220302536U CN202321857726.8U CN202321857726U CN220302536U CN 220302536 U CN220302536 U CN 220302536U CN 202321857726 U CN202321857726 U CN 202321857726U CN 220302536 U CN220302536 U CN 220302536U
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- 229910000831 Steel Inorganic materials 0.000 title claims abstract description 118
- 239000010959 steel Substances 0.000 title claims abstract description 118
- 230000005484 gravity Effects 0.000 claims abstract description 12
- 238000009434 installation Methods 0.000 claims abstract description 6
- 238000003491 array Methods 0.000 claims description 12
- 238000010438 heat treatment Methods 0.000 abstract description 18
- 238000000034 method Methods 0.000 description 10
- 230000009286 beneficial effect Effects 0.000 description 4
- 230000005540 biological transmission Effects 0.000 description 2
- 230000015572 biosynthetic process Effects 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000003754 machining Methods 0.000 description 2
- 238000003466 welding Methods 0.000 description 2
- 229910000851 Alloy steel Inorganic materials 0.000 description 1
- 229910000954 Medium-carbon steel Inorganic materials 0.000 description 1
- 238000004891 communication Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 230000007246 mechanism Effects 0.000 description 1
- 239000000725 suspension Substances 0.000 description 1
- 230000003245 working effect Effects 0.000 description 1
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Abstract
The utility model relates to the field of heat treatment, in particular to a steel shaft, a hoisting assembly for heat processing the steel shaft and a hoisting system. This hoist and mount subassembly includes: the lifting device comprises a lifting ring arranged in the vertical direction, a lifting support extending in the horizontal direction, a first connecting rod extending in the vertical direction and a plurality of bolts. The hoisting support comprises a plurality of vertical through holes, and the vertical through holes are uniformly arranged around the gravity center of the hoisting support. The first end of the first connecting rod is connected with the bottom end of the hanging ring, and the second end is connected with the gravity center of the hanging bracket. The bolts are arranged corresponding to the vertical through holes; the bolt includes: a head and a screw. The size of the head is larger than the diameter of the vertical through hole, and the head is supported on the upper end face of the hoisting support. The screw rod extends along the vertical direction and penetrates through the vertical through hole; the external thread of the screw is an arc thread external thread. The hoisting assembly improves the efficiency, reliability and stability of steel shaft installation while guaranteeing the verticality of the steel shaft, and obviously reduces the risk of stress concentration of the steel shaft.
Description
Technical Field
The utility model relates to the field of heat treatment, in particular to a steel shaft, a hoisting assembly for heat processing the steel shaft and a hoisting system.
Background
Shaft-type parts, such as steel shafts, are widely used in impact-type mechanisms. The requirements for steel shafts generally include: the axial tolerance acting force is large, the impact load resistance is large, the form and position tolerance requirement of the steel shaft is ensured, and the like. The processing technology of the steel shaft comprises heat treatment processing (i.e. hot processing). The hot working process is carried out in a heat treatment furnace, and the verticality of the steel shaft in the heat treatment furnace is required to be ensured, and meanwhile, the uniform heating of the steel shaft is ensured, so that the steel shaft is prevented from being obviously deformed in the hot working process.
In the prior art, when carrying out hot working to the steel axle, the hoist and mount system that adopts includes: a steel shaft provided with a hoisting through hole and a hoisting assembly. The extending direction of the hoisting through hole is perpendicular to the extending direction of the steel shaft. The hoisting assembly comprises a cylindrical pin and a hoisting rope. The cylindric lock runs through hoist and mount through-hole, and the lifting rope is connected respectively at the both ends of cylindric lock. Therefore, the steel shaft can be hoisted in the hot working equipment in a hoisting mode of the hoisting rope. However, this hoist assembly has the following drawbacks: the steel shaft produced based on the hoisting assembly is easy to generate larger stress concentration near the hoisting through hole in the process of stress, so that cracks and even fractures are caused, and the steel shaft structure is invalid.
Disclosure of Invention
In order to solve the technical problems that the steel shaft produced by the existing hoisting assembly is easy to have larger stress concentration near the hoisting through hole in the process of stress, so that cracks and even breaks are caused and the steel shaft structure is invalid, the utility model provides the technical scheme that:
in one aspect, a hoist assembly for hot working a steel shaft is provided. This a hoist and mount subassembly for hot working steel shaft includes: the lifting device comprises a lifting ring arranged in the vertical direction, a lifting support extending in the horizontal direction, a first connecting rod extending in the vertical direction and a plurality of bolts. The hoisting support comprises a plurality of vertical through holes, and the vertical through holes are uniformly arranged around the gravity center of the hoisting support. The first end of the first connecting rod is connected with the bottom end of the hanging ring, and the second end of the first connecting rod is connected with the gravity center of the hanging bracket. The bolts are arranged corresponding to the vertical through holes; wherein, the bolt includes: a head and a screw. The size of the head is larger than the diameter of the vertical through hole, and the head is supported on the upper end face of the hoisting support. The screw rod extends along the vertical direction and penetrates through the vertical through hole; the external thread of the screw is an arc thread external thread, and the screw is configured to be in threaded connection with the steel shaft through the arc thread external thread.
Optionally, the lifting bracket is disc-shaped; the plurality of vertical through holes form at least one group of vertical through hole annular arrays around the circle center of the hoisting support; the diameter of the vertical through hole annular array is smaller than that of the hoisting support.
Optionally, the plurality of vertical through holes form a plurality of groups of vertical through hole annular arrays around the circle center of the hoisting bracket; the diameters of two adjacent groups of vertical through hole annular arrays in the plurality of groups of vertical through hole annular arrays are arranged in a gradient mode, so that a preset distance is reserved between any two adjacent vertical through holes.
Optionally, the hoisting bracket further comprises: the first mounting portion, the at least one annular mounting portion and the plurality of connecting portions. The first mounting portion is connected with the second end of the first connecting rod. The plurality of vertical through holes are uniformly distributed on the annular mounting part; the first mounting portion is located at a center of the annular mounting portion, and the plurality of connection portions are configured to connect the first mounting portion and the annular mounting portion and extend the first mounting portion and the annular mounting portion in a horizontal direction.
Optionally, the annular mounting part is a plurality of annular mounting parts; the diameters of any two adjacent annular mounting parts are arranged in a gradient manner, so that a preset distance is reserved between any two adjacent vertical through holes.
Optionally, the first mounting portion has a disc shape.
Optionally, the connecting portion is linear, and the connecting portion extends in a radial direction of the annular mounting portion.
In another aspect, a steel shaft is provided. The steel shaft comprises a lifting hole. The hoisting hole is positioned at one end part of the extending direction of the steel shaft and extends along the extending direction of the steel shaft; an internal thread is arranged in the lifting hole, and the internal thread of the lifting hole is an arc thread internal thread; the lifting hole is configured to be in threaded connection with the lifting assembly through the circular arc thread internal thread.
Optionally, the thread form angle of the circular arc thread internal thread is any value of 30-60 degrees.
In yet another aspect, a hoisting system for hot working a steel shaft is provided. This a hoist and mount system for hot working steel shaft includes: the hoisting assembly and the steel shaft.
The utility model has the advantages or beneficial effects that:
1. according to the hoisting assembly for the hot-working steel shaft, provided by the utility model, the steel shaft and the hoisting assembly can be fast, conveniently and stably fixed through the mutual matching of the bolts and the hoisting holes of the steel shaft. Meanwhile, the perpendicularity of the steel shaft can be guaranteed, and further the heating uniformity of the surface of the steel shaft is improved, and the heat treatment depth is improved.
2. The hoisting assembly for the hot-working steel shaft can improve the efficiency and reliability of the installation of the steel shaft and the stability of a hoisting structure while guaranteeing the perpendicularity of the steel shaft.
3. According to the utility model, the hoisting hole is positioned at one end part of the extending direction of the steel shaft and extends along the extending direction of the steel shaft, so that the risk of stress concentration of the steel shaft in the working process can be remarkably reduced, and the structural reliability and the service life of the steel shaft are improved. The lifting hole adopts an arc thread structure, so that the working procedure of finish machining of the lifting hole can be omitted, and the cost is saved; on the other hand, the arc thread structure avoids the formation of the sharp angle of the lifting hole, is beneficial to the release of residual stress of the steel shaft and reduces the risk of stress concentration. Therefore, the utility model solves the technical problems that the steel shaft produced by the existing hoisting assembly is easy to have larger stress concentration near the hoisting through hole in the process of being stressed, so that cracks and even breaks are caused, and the structure of the steel shaft is invalid.
4. The lifting support comprises a plurality of vertical through holes, and the vertical through holes are uniformly arranged around the gravity center of the lifting support. The bolts correspond to the vertical through holes, so that the fixing of a plurality of steel shafts and the hoisting assembly can be completed simultaneously, the batch heat treatment of the steel shafts is facilitated, the efficiency of the heat treatment of the steel shafts is improved, and the space utilization rate of the heat processing equipment is improved on the premise that the heat treatment effect of the steel shafts is guaranteed.
Drawings
The utility model and its features, aspects and advantages will become more apparent from the detailed description of non-limiting embodiments with reference to the following drawings. Like numbers refer to like parts throughout. The drawings are not intended to be drawn to scale, emphasis instead being placed upon illustrating the principles of the utility model.
FIG. 1 is a schematic structural view of a hoisting system for hot working a steel shaft according to some embodiments of the utility model;
FIG. 2 is a schematic structural view of a hoist assembly for hot working a steel shaft according to some embodiments of the present utility model;
FIG. 3 is a schematic view of a lifting bracket according to some embodiments of the utility model;
FIG. 4 is a schematic view of a lifting bracket according to further embodiments of the present utility model;
FIG. 5 is a schematic structural view of a steel shaft according to some embodiments of the present utility model;
fig. 6 is an enlarged partial cross-sectional view of the area a of fig. 5.
Detailed Description
It should be noted that, in the case of no conflict, the embodiments and features in the embodiments may be combined with each other. It is noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of exemplary embodiments in accordance with the present application.
It will be understood that the terms "comprises" and/or "comprising," when used in this specification, specify the presence of stated features, steps, operations, devices, components, and/or groups thereof.
The terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," "outer," and the like, as used herein, refer to an orientation or positional relationship based on that shown in the drawings, merely for convenience of description and to simplify the description, and do not denote or imply that the devices or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus are not to be construed as limiting the utility model.
The terms "first," "second," "third," and the like, as used herein, are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.
Unless specifically stated or limited otherwise, the terms "mounted," "connected," and "coupled" should be construed broadly, as if they were fixedly connected, detachably connected, or integrally connected, for example; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communication between two elements. The specific meaning of the above terms in the present utility model will be understood in specific cases by those of ordinary skill in the art.
The following description of the technical solutions according to the embodiments of the present utility model refers to the accompanying drawings, which are included to illustrate only some embodiments of the utility model, and not all embodiments. Accordingly, the following detailed description of the embodiments of the utility model, as presented in the figures, is not intended to limit the scope of the utility model, as claimed, but is merely representative of selected embodiments of the utility model. All other embodiments, which can be made by a person skilled in the art without making any inventive effort, are intended to fall within the scope of the present utility model.
In some embodiments, a hoist assembly 100 for hot working a steel shaft is provided, as shown in fig. 1-4, comprising: the lifting device comprises a lifting ring 1, a lifting bracket 2, a first connecting rod 3 and a plurality of bolts 4. The lifting ring 1 is arranged in the vertical direction, and the lifting assembly 100 is suspended in the hot working equipment through the lifting ring 1. The lifting frame 2 extends in a horizontal direction. The lifting bracket 2 comprises a plurality of vertical through holes 21, and the vertical through holes 21 are uniformly arranged around the gravity center of the lifting bracket 2. The first connecting rod 3 extends along the vertical direction, the first end of the first connecting rod 3 is connected with the bottom end of the lifting ring 1, and the second end of the first connecting rod 3 is connected with the gravity center of the lifting support 2. The bolts 4 are disposed corresponding to the vertical through holes 21. The bolt 4 includes: a head 41 and a screw 42. The head 41 has a size larger than the diameter of the vertical through hole 21, and the head 41 is supported on the upper end surface of the hanging bracket 2. The screw 42 extends in the vertical direction and penetrates through the vertical through hole 21; the external threads of the screw 42 are circular arc thread external threads, and the screw 42 is configured to be screwed with the steel shaft 200 through the circular arc thread external threads.
In some embodiments, a steel shaft 200 is provided. As shown in fig. 5 to 6, the steel shaft 200 includes a hoist hole 5. The hoist hole 5 is located at one of the end portions of the extension direction of the steel shaft 200 and extends in the extension direction of the steel shaft 200. An internal thread 51 is arranged in the lifting hole 5, and the internal thread 51 of the lifting hole 5 is an arc thread internal thread; the lifting hole 5 is configured to be screwed with the lifting assembly 100 by means of the circular arc thread internal thread 51.
Based on the hoisting assembly 100 and the steel shaft 200 for hot working the steel shaft, the bolt 4 and the hoisting hole 5 of the steel shaft 200 can be matched with each other, namely, the circular arc external thread and the circular arc internal thread are matched for threaded connection, so that the steel shaft 200 and the hoisting assembly 100 can be stably fixed. Thus, the steel shaft 200 is easily installed in a hot working apparatus (e.g., a hot working furnace) by the hoist assembly 100 quickly, conveniently, and stably. Meanwhile, since the hanging ring 1 and the first connecting rod 3 are vertically disposed, the hanging bracket 2 is horizontally disposed, and the vertical through hole 21 is extended in the vertical direction, when the bolt 4 is installed in the vertical through hole 21, it is ensured that the screw 42 of the bolt 4 is extended in the vertical direction. Therefore, the perpendicularity of the steel shaft 200 in threaded connection with the screw rod 42 can be guaranteed, and further the heating uniformity of the surface of the steel shaft is improved, and the heat treatment depth is improved. Compared with the existing hoisting assembly comprising the cylindrical pin and the hoisting ropes, the hoisting assembly needs to be adjusted to ensure that the lengths of the hoisting ropes at two ends of the cylindrical pin are consistent, and the perpendicularity of the steel shaft can be guaranteed. The hoisting assembly 100 and the steel shaft 200 for hot working the steel shaft provided in the foregoing embodiments can improve the efficiency and reliability of the installation of the steel shaft 200 and increase the stability of the hoisting structure while guaranteeing the perpendicularity of the steel shaft 200 through the threaded connection manner.
Unlike the extending direction of the hoist through hole in the prior art, which is perpendicular to the extending direction of the steel shaft, in the above embodiment, the hoist hole 5 is located at one of the end portions of the extending direction of the steel shaft 200 and extends along the extending direction of the steel shaft 200, and the above arrangement can significantly reduce the risk of stress concentration of the steel shaft 200 during operation, thereby improving the structural reliability and service life of the steel shaft 200.
In the embodiment, the lifting hole 5 adopts an arc thread structure, which is different from other threads, so that the working procedure of finish machining the lifting hole can be omitted, and the cost can be saved; on the other hand, the arc thread structure avoids the formation of the sharp angle of the lifting hole, and when the internal stress acts on the thread structure, the arc thread is more beneficial to stress transmission compared with other threads, so that the risk of stress concentration can be reduced. Therefore, the circular arc thread structure is advantageous for the residual stress release of the steel shaft 200 during the heat treatment; in the working process of the steel shaft 200, the arc thread structure is beneficial to the transmission of stress of the steel shaft 200, and the risk of stress concentration is reduced.
In the above embodiment, the lifting bracket 2 includes the plurality of vertical through holes 21, and the vertical through holes 21 are uniformly disposed around the center of gravity of the lifting bracket 2. The bolts 4 are disposed corresponding to the vertical through holes 21. Therefore, a plurality of steel shafts 200 to be subjected to heat treatment can be connected to the bolts 4 through circular arc threads at the same time, so that the fixing of the plurality of steel shafts 200 and the hoisting assembly 100 is completed, the batch heat treatment of the steel shafts 200 is facilitated, and the efficiency of the heat treatment of the steel shafts 200 and the space utilization rate of the heat processing equipment are improved on the premise that the heat treatment effect of the steel shafts 200 is ensured.
When the hoisting assembly 100 for hot working the steel shaft is actually used, the steel shaft 200 can be uniformly distributed on the hoisting support 2 according to the number and the counterweight of the steel shaft 200, so that the whole extending direction of the hoisting support 2 is ensured to be along the horizontal direction, and the higher space utilization rate is realized while the hot working effect of the steel shaft 200 is ensured.
In some embodiments, the lifting ring 1 and the first connecting rod 3 are fixed by welding.
In some embodiments, the lifting bracket 2 and the first connecting rod 3 are fixed by welding.
In some embodiments, steel shaft 200 includes, but is not limited to, medium carbon steel (e.g., 45 steel), low alloy steel (e.g., 20 Cr).
In some embodiments, as shown in fig. 6, the profile angle α of the circular arc thread internal thread 51 is any value from 30 ° to 60 °.
In some embodiments, as shown in fig. 6, the small diameter d1 of the circular-arc thread internal thread 51, the large diameter d2 of the circular-arc thread internal thread 51, and the circular-arc radius R of the circular-arc thread internal thread 51 may be set according to practical situations.
In some embodiments, as shown in fig. 1, the lifting support 2 is disc-shaped. The plurality of vertical through holes 21 form at least one group of vertical through hole annular arrays around the circle center of the hoisting bracket 2; the diameter of the vertical through hole annular array is smaller than that of the hoisting support. The disc size of the lifting bracket 2 can be set according to the inner cavity size of the hot working equipment.
In some embodiments, as shown in fig. 4, a plurality of vertical through holes 21 form a plurality of groups of vertical through hole annular arrays around the center of the lifting bracket 2; the diameters of two adjacent groups of the annular arrays of vertical through holes in the plurality of groups of annular arrays of vertical through holes are arranged in a gradient manner, so that a preset interval is reserved between any two adjacent groups of vertical through holes 21. Thereby, the suspension density of the steel shaft 200 to be heat-worked can be appropriately increased, thereby improving the efficiency of the heat-working treatment.
In some embodiments, as shown in fig. 1-3, the lifting bracket 2 comprises: a first mounting portion 22, at least one annular mounting portion 23 and a plurality of connecting portions 24. The first mounting portion 22 is connected to the second end of the first connecting rod 3. The plurality of vertical through holes 21 are uniformly distributed on the annular mounting portion 23. The first mounting portion 22 is located at the center of the annular mounting portion 23, and the plurality of connection portions 24 are configured to connect the first mounting portion 22 and the annular mounting portion 23, and extend the first mounting portion 22 and the annular mounting portion 23 in the horizontal direction. Therefore, compared with the whole disc-shaped lifting support 2, through the arrangement, the material consumption is saved, and the cost is reduced; on the other hand, on the premise of ensuring the function of the hoisting support 2, the weight of the hoisting support 2 is reduced, and the convenience of the hoisting system 300 is improved; in still another aspect, a window for observation is formed among the first mounting portion 22, the annular mounting portion 23 and the plurality of connecting portions 24, so that an observation view angle of the hoisting assembly 100 is further expanded, and convenience in mounting operation of the steel shaft 200 is improved.
In some embodiments, as shown in fig. 4, the annular mounting portion 23 is a plurality; the diameters of any adjacent two annular mounting portions 23 are arranged in a gradient manner so that a preset interval is provided between any adjacent two vertical through holes 21.
In some embodiments, as shown in fig. 1, the first mounting portion 22 is disc-shaped. Thus, the first mounting portion 22 is regular in shape and easy to process; meanwhile, the center of gravity of the horizontally arranged disc is stable, so that the installation position of the steel shaft 200 can be adjusted according to the number of the steel shafts 200 and the counterweight, and the assembly convenience of the hoisting system 300 for hot working the steel shafts is improved.
In some embodiments, as shown in fig. 1, the connection portion 24 is linear, and the connection portion 24 extends in a radial direction of the annular mounting portion 23. Thus, the shape of the connecting portion 24 is regular, and the processing is easy; meanwhile, the gravity center of the hoisting support 2 is stable, the installation position of the steel shaft 200 can be adjusted according to the number of the steel shafts 200 and the counterweight, and the assembly convenience of the hoisting system 300 for hot working the steel shafts is improved.
In some embodiments, a hoisting system 300 for hot working a steel shaft is provided. As shown in fig. 1, a hoisting system 300 for hot working a steel shaft includes: the foregoing hoist assembly 100 and steel shaft 200. The advantages of the hoisting system 300 for hot working steel shafts include the advantages of the hoisting assembly 100 and the steel shaft 200, and thus are not described in detail herein.
The foregoing description is only of the preferred embodiments of the present utility model and is not intended to limit the scope of the utility model, and all equivalent structural changes made by the present utility model and the accompanying drawings, or direct or indirect application in other related technical fields, are included in the scope of the present utility model.
Claims (10)
1. A hoisting assembly for hot working a steel shaft, comprising:
a hanging ring arranged along the vertical direction;
the hoisting support extends along the horizontal direction and comprises a plurality of vertical through holes, and the vertical through holes are uniformly arranged around the gravity center of the hoisting support;
the first connecting rod extends along the vertical direction, the first end of the first connecting rod is connected with the bottom end of the hanging ring, and the second end of the first connecting rod is connected with the gravity center of the hanging bracket; and
the bolts are arranged corresponding to the vertical through holes; wherein, the bolt includes:
the size of the head is larger than the diameter of the vertical through hole, and the head is supported on the upper end face of the hoisting bracket; and
the screw rod extends along the vertical direction and penetrates through the vertical through hole; the external thread of the screw is an arc thread external thread, and the screw is configured to be in threaded connection with the steel shaft through the arc thread external thread.
2. The sling assembly of claim 1, wherein the sling mount is disc-shaped; the plurality of vertical through holes form at least one group of vertical through hole annular arrays around the circle center of the hoisting support; the diameter of the vertical through hole annular array is smaller than that of the hoisting support.
3. The lifting assembly of claim 2, wherein the plurality of vertical through holes form a plurality of groups of annular arrays of vertical through holes around a center of the lifting bracket; the diameters of two adjacent groups of vertical through hole annular arrays in the plurality of groups of vertical through hole annular arrays are arranged in a gradient mode, so that a preset distance is reserved between any two adjacent vertical through holes.
4. A lifting assembly according to any one of claims 1 to 3, wherein the lifting bracket further comprises:
the first installation part is connected with the second end of the first connecting rod;
the plurality of vertical through holes are uniformly distributed on the annular mounting part; and
and a plurality of connection parts, the first mounting part being located at the center of the annular mounting part, the plurality of connection parts being configured to connect the first mounting part with the annular mounting part and extend the first mounting part with the annular mounting part in a horizontal direction.
5. The hoist assembly of claim 4, wherein the annular mounting portion is a plurality of; the diameters of any two adjacent annular mounting parts are arranged in a gradient manner, so that a preset distance is reserved between any two adjacent vertical through holes.
6. The hoist assembly of claim 4, wherein the first mounting portion is disc-shaped.
7. The hoist assembly of claim 6, characterized in that the connection portion is rectilinear and extends radially of the annular mounting portion.
8. A steel shaft, comprising:
the hoisting hole is positioned at one end part of the extending direction of the steel shaft and extends along the extending direction of the steel shaft; an internal thread is arranged in the lifting hole, and the internal thread of the lifting hole is an arc thread internal thread; the lifting hole is configured to be in threaded connection with the lifting assembly through the circular arc thread internal thread.
9. The steel shaft according to claim 8, wherein the thread form angle of the circular arc thread internal thread is any value of 30 ° to 60 °.
10. A hoisting system for hot working a steel shaft, comprising:
the hoist assembly of any one of claims 1 to 7, and
a steel shaft, the steel shaft comprising:
the hoisting hole is positioned at one end part of the extending direction of the steel shaft; an internal thread is arranged in the lifting hole, and the internal thread of the lifting hole is an arc thread internal thread; the lifting hole is configured to be in threaded connection with the lifting assembly through the circular arc thread internal thread.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321857726.8U CN220302536U (en) | 2023-07-14 | 2023-07-14 | Steel shaft, hoisting assembly for hot working steel shaft and hoisting system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321857726.8U CN220302536U (en) | 2023-07-14 | 2023-07-14 | Steel shaft, hoisting assembly for hot working steel shaft and hoisting system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN220302536U true CN220302536U (en) | 2024-01-05 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202321857726.8U Active CN220302536U (en) | 2023-07-14 | 2023-07-14 | Steel shaft, hoisting assembly for hot working steel shaft and hoisting system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN220302536U (en) |
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2023
- 2023-07-14 CN CN202321857726.8U patent/CN220302536U/en active Active
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