CN114856634A - Rotary support rod device - Google Patents
Rotary support rod device Download PDFInfo
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- CN114856634A CN114856634A CN202210493353.4A CN202210493353A CN114856634A CN 114856634 A CN114856634 A CN 114856634A CN 202210493353 A CN202210493353 A CN 202210493353A CN 114856634 A CN114856634 A CN 114856634A
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- support rod
- assembly
- brace
- upright
- rod
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- 238000007789 sealing Methods 0.000 claims description 2
- 230000002787 reinforcement Effects 0.000 claims 1
- 238000000034 method Methods 0.000 abstract description 22
- 230000008569 process Effects 0.000 abstract description 20
- 229910000831 Steel Inorganic materials 0.000 description 3
- 230000003014 reinforcing effect Effects 0.000 description 3
- 239000010959 steel Substances 0.000 description 3
- 230000009471 action Effects 0.000 description 2
- 230000005484 gravity Effects 0.000 description 2
- 238000011900 installation process Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 238000010276 construction Methods 0.000 description 1
- 238000006073 displacement reaction Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 230000007246 mechanism Effects 0.000 description 1
- 230000000750 progressive effect Effects 0.000 description 1
- 238000010008 shearing Methods 0.000 description 1
- 230000007704 transition Effects 0.000 description 1
- 238000003466 welding Methods 0.000 description 1
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Classifications
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- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21D—SHAFTS; TUNNELS; GALLERIES; LARGE UNDERGROUND CHAMBERS
- E21D11/00—Lining tunnels, galleries or other underground cavities, e.g. large underground chambers; Linings therefor; Making such linings in situ, e.g. by assembling
- E21D11/04—Lining with building materials
- E21D11/10—Lining with building materials with concrete cast in situ; Shuttering also lost shutterings, e.g. made of blocks, of metal plates or other equipment adapted therefor
- E21D11/102—Removable shuttering; Bearing or supporting devices therefor
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- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21D—SHAFTS; TUNNELS; GALLERIES; LARGE UNDERGROUND CHAMBERS
- E21D11/00—Lining tunnels, galleries or other underground cavities, e.g. large underground chambers; Linings therefor; Making such linings in situ, e.g. by assembling
- E21D11/40—Devices or apparatus specially adapted for handling or placing units of linings or supporting units for tunnels or galleries
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- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21D—SHAFTS; TUNNELS; GALLERIES; LARGE UNDERGROUND CHAMBERS
- E21D15/00—Props; Chocks, e.g. made of flexible containers filled with backfilling material
- E21D15/14—Telescopic props
- E21D15/16—Telescopic props with parts held together by positive means, with or without relative sliding movement when the prop is subject to excessive pressure
- E21D15/24—Telescopic props with parts held together by positive means, with or without relative sliding movement when the prop is subject to excessive pressure with axial screw-and-nut, rack-and-worm, or like mechanism
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- Engineering & Computer Science (AREA)
- Mining & Mineral Resources (AREA)
- Structural Engineering (AREA)
- Life Sciences & Earth Sciences (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Geochemistry & Mineralogy (AREA)
- Geology (AREA)
- Architecture (AREA)
- Civil Engineering (AREA)
- Mechanical Engineering (AREA)
- Mutual Connection Of Rods And Tubes (AREA)
Abstract
The invention discloses a rotary type support rod device which is used for supporting a portal frame, wherein two sides of the portal frame are oppositely provided with two upright posts; the rotary type stay bar device comprises: one end of the support rod component is rotatably connected to one of the upright columns, and the support rod component can rotate to a position vertical to the upright column; and a fixing assembly for fixing the stay bar assembly to a position perpendicular to the column and supporting the column. In the process of supporting the portal by using the rotary type stay bar device provided by the invention, the frequent carrying and mounting processes of the stay bar device are avoided, the use process of the stay bar device is simplified, and the process of supporting and releasing the portal is more convenient.
Description
Technical Field
The invention relates to the technical field of tunnel construction equipment, in particular to a rotary type support rod device.
Background
In tunnel engineering machinery, a steel mould trolley is used for tunnel lining, the mechanical structure of the steel mould trolley mainly comprises a walking mechanism, a portal frame, a template system and the like, and a template is supported on the portal frame through a screw rod. The portal of the steel mould trolley is subjected to larger lateral pressure when being recovered, and the structural rigidity and stability are usually ensured by arranging a bracing structure; and after the time is recovered, the opposite-bracing structure needs to be disassembled so as to facilitate vehicle traffic.
Among the prior art, prop structure weight greatly, need many people to lift the installation, after using up, need dismantle the transportation through the cooperation of the back manpower of equipment, it is inconvenient to use, and need dismantle repeatedly, and on-the-spot workman's intensity of labour and risk are great.
In summary, a need exists in the art for a support rod device that is convenient to use.
Disclosure of Invention
In view of the above, an object of the present invention is to provide a rotary brace apparatus, which is rotatably mounted to a vertical column, and can fix a brace assembly to a position perpendicular to the vertical column by a fixing assembly when the vertical column needs to be supported; when the support needs to be removed, the support rod assembly is rotated to the non-support position only by removing the connection of the fixing assembly, so that the frequent carrying and installation processes of the support rod device are avoided, the use process of the support rod device is simplified, and the process of supporting and removing the support for the door frame is more convenient.
In order to achieve the above purpose, the invention provides the following technical scheme:
a rotary type support rod device is used for supporting a portal frame, and two upright posts are oppositely arranged on two sides of the portal frame; the rotary brace apparatus includes:
one end of the support rod component is rotatably connected to one of the upright columns, and the support rod component can be rotated to a position vertical to the upright columns;
a fixing assembly for fixing the stay bar assembly to a position perpendicular to the column and supporting the column.
Optionally, the brace bar assembly comprises a first brace bar and a second brace bar; one end of the first support rod is rotatably connected to one of the upright columns, one end of the second support rod is rotatably connected to the other upright column, and the first support rod and the second support rod are oppositely arranged;
the fixing assembly is used for connecting the first support rod and the second support rod and enabling the first support rod and the second support rod to be perpendicular to the upright post.
Optionally, the strut assembly comprises a third strut, and one end of the third strut is rotatably connected to one of the columns; the fixing component is used for connecting the third support rod and the other upright column so as to fix the third support rod to a position vertical to the upright column.
Optionally, the fixing component comprises a screw component, a first flange and a second flange which is matched and connected with the first flange,
the screw assembly is arranged at the other end of the first support rod in a telescopic manner, the second flange is fixedly arranged at the other end of the second support rod, and the first flange is arranged at the telescopic end of the screw assembly;
the screw rod component is arranged on the first support rod, and the first support rod is provided with a threaded hole matched with the screw rod component.
Optionally, the screw assembly comprises:
one end of the first screw rod is provided with threads, and the other end of the first screw rod is provided with a shaft collar connected with the support rod assembly;
the sealing ring is sleeved at one end of the first screw rod, which is provided with the threads;
the first flange plate is arranged at one end, provided with the threads, of the first screw rod.
Optionally, the fixing component comprises a clamping portion and a clamping groove which is matched with the clamping portion in clamping or releasing;
the joint portion set up in the vaulting pole subassembly, the draw-in groove set up in the vaulting pole subassembly or the stand.
Optionally, the strut assembly is of a rod-shaped structure, and a round chamfer is arranged on the lower end face of one end of the strut assembly, which is rotatably connected with the upright post.
Optionally, the end face of the strut assembly rotatably connected with the upright column is provided with a limiting end plate, and the limiting end plate is located on the upper portion of the round chamfer.
Optionally, a reinforcing plate is arranged at one end of the strut assembly, which is rotatably connected with the upright post.
Optionally, a pin shaft is arranged at one end of the stay bar assembly connected with the upright column, so that the stay bar assembly rotates around the pin shaft relative to the upright column;
the central axis of the pin shaft is positioned at the lower part of the central axis of the stay bar component.
In the process of using the rotary type stay bar device provided by the invention, when a portal frame needs to be supported, the stay bar component is rotated to a position vertical to the upright post and is fixed through the fixing component, so that the stay bar component is kept at the position vertical to the upright post and supports the upright post; when the support to the portal needs to be removed, the fixing of the support rod assembly is removed through the fixing assembly, the support rod assembly is made to rotate to a position which is not perpendicular to the stand column under the action of gravity or external force, the position can be parallel to the stand column or a position with a certain included angle, the fixing of the support rod assembly is removed, and the stand column is not supported by the support rod assembly.
Compared with the prior art, in the process of supporting the portal frame by using the rotary type support rod device, the frequent carrying and installing processes of the support rod device are avoided, the using process of the support rod device is simplified, and the process of supporting and releasing the portal frame is more convenient.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the provided drawings without creative efforts.
FIG. 1 is a top view of a first embodiment of a rotational brace apparatus of the present invention;
FIG. 2 is a side view of a first embodiment of a rotational brace apparatus of the present invention;
fig. 3 is a side view of a first brace of the rotary brace apparatus of fig. 1;
fig. 4 is a top view of a first brace of the rotary brace apparatus of fig. 1;
FIG. 5 is a partial cross-sectional view of a second brace of the rotary brace apparatus of FIG. 1;
fig. 6 is a top view of a second brace of the rotary brace apparatus of fig. 1;
FIG. 7 is a side view of an embodiment of a screw assembly provided by the present invention;
FIG. 8 is a schematic cross-sectional view taken along line A-A of FIG. 7;
FIG. 9 is a schematic side view of an embodiment of a strut mount provided in accordance with the present invention;
FIG. 10 is a schematic cross-sectional view taken along line B-B of FIG. 9;
FIG. 11 is a schematic view of the rotary brace apparatus of FIG. 1 being used to support a base frame;
FIG. 12 is a top view of a second embodiment of a rotational brace apparatus of the present invention;
fig. 13 is a top view of a third embodiment of a rotational brace apparatus provided in the present invention.
In FIGS. 1-13:
the structure comprises a pin shaft 1, a first support rod 2, a fastener 3, a screw assembly 4, a second support rod 5, a support rod seat 6, a limit end plate 7, a reinforcing plate 8, a sleeve 9, a square tube 10, a first flange 11, a first rib plate 12, a nut 13, a second rib plate 14, a first screw rod 15, a seal ring 16, a third rib plate 17, a bottom plate 18, an ear plate 19, a stand column 20, a portal frame 21, a rotary support rod device 22, a second screw rod 23, a top plate 24, a perforated plate 25 and a third support rod 26.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
The core of the invention is to provide a rotary type support rod device which can be rotatably arranged on an upright post, and when the upright post needs to be supported, a support rod component can be fixed to a position vertical to the upright post through a fixing component; when the support needs to be removed, the support rod assembly is rotated to the non-support position only by removing the connection of the fixing assembly, so that the frequent carrying and installation processes of the support rod device are avoided, the use process of the support rod device is simplified, and the process of supporting and removing the support for the door frame is more convenient.
Please refer to fig. 1 to fig. 13.
The specific embodiment discloses a rotary type support rod device 23, which is used for supporting a portal 21, wherein two sides of the portal 21 are oppositely provided with two upright posts 20; the rotary stay device 23 includes:
a stay bar assembly, one end of which is rotatably connected to one of the upright posts 20, the stay bar assembly being rotatable to a position perpendicular to the upright posts 20;
a fixing assembly for fixing the stay bar assembly to a position perpendicular to the column 20 and supporting the column 20.
It should be noted that the number of the stay bars in the stay bar assembly needs to be determined according to actual situations, and may be one, or two or more. When the number of the support rods is multiple, each support rod in the support rod assembly can be connected into an integral rod-shaped structure or disassembled into at least two parts which are independent from each other.
In the process of using the rotary type stay bar device 23 provided by the present embodiment, when the gantry 21 needs to be supported, the stay bar assembly is rotated to a position perpendicular to the upright post 20, and is fixed by the fixing assembly, so that the stay bar assembly is maintained at the position perpendicular to the upright post 20 and supports the upright post 20; when the support of the gantry 21 needs to be released, the fixing of the strut assembly is released through the fixing assembly, so that the strut assembly rotates to a position which is not perpendicular to the upright column 20 under the action of gravity or external force, and can be a position which is parallel to the upright column 20 or has a certain included angle, the fixing of the strut assembly is released, and the strut assembly does not support the upright column 20.
Compared with the prior art, in the process of supporting the portal 21 by using the rotary type support rod device 23 provided by the invention, frequent carrying and mounting processes of the support rod device are avoided, the using process of the support rod device is simplified, and the process of supporting and releasing the portal 21 is more convenient.
In a particular embodiment, as shown in fig. 1, 2, 11, the strut assembly comprises a first strut 2 and a second strut 5; the mounting heights of the first support rod 2 and the second support rod 5 are the same, one end of the first support rod 2 is rotatably connected to one upright post 20, one end of the second support rod 5 is rotatably connected to the other upright post 20, and the first support rod 2 and the second support rod 5 are oppositely arranged;
the fixing component is used for connecting the first support rod 2 and the second support rod 5, and enabling the first support rod 2 and the second support rod 5 to be perpendicular to the upright post 20.
The first support rod 2 and the second support rod 5 are rotatably connected to the upright post 20 through a pin shaft 1 and a support rod seat 6, and a sleeve 9 shown in fig. 3 and 5 is arranged at the pin shaft 1; as shown in fig. 9 and 10, the stay bar seat 6 includes a third rib plate 17, a bottom plate 18, and an ear plate 19, and in the use process, when the upright post 20 needs to be supported, as shown in fig. 11, the first stay bar 2 and the second stay bar 5 are both rotated to the position perpendicular to the upright post 20, and the first stay bar 2 and the second stay bar 5 are connected by the fixing component, so that the upright post 20 is supported by the first stay bar 2 and the second stay bar 5.
Preferably, the first support rod 2 and the second support rod 5 are both hollow tubes, and may be square tubes 10 or circular tubes.
As shown in fig. 3, the brace rod assembly is of a rod-shaped structure, and the lower end surface of one end of the brace rod assembly, which is rotatably connected with the upright post 20, is provided with a round chamfer, the round chamfer is located at an included angle between the side surface of the first brace rod 2 facing the upright post 20 and the lower end surface of the first brace rod 2 facing the ground, and an included angle between the side surface of the second brace rod 5 facing the upright post 20 and the lower end surface of the second brace rod 5 facing the ground; in this embodiment, the rounded corners are provided to make the rotation of the first brace 2 and the second brace 5 relative to the upright 20 smoother, and avoid the end portions from affecting the rotation of the first brace 2 and the second brace 5 relative to the upright 20, preferably, both the first brace 2 and the second brace 5 can rotate to an angle parallel to the upright 20.
In a specific embodiment, a limiting end plate 7 is disposed on an end surface of the strut assembly rotatably connected to the upright column 20, the limiting end plate 7 is located on an upper portion of the circular chamfer, specifically, the limiting end plate 7 may be disposed on end surfaces of the first strut 2, the second strut 5 and the third strut 26 facing the upright column 20, where the third strut 26 is the strut assembly in fig. 12, as shown in fig. 3, the limiting end plate 7 is disposed on an end surface of the first strut 2 facing the upright column 20, and during the rotation of the first strut 2 relative to the upright column 20, the end plate may limit a rotation angle of the first strut 2 relative to the upright column 20, so as to avoid the rotation transition of the first strut 2, and preferably, when the limiting end plate 7 contacts the upright column 20, the first strut 2 is exactly perpendicular to the upright column 20.
In a specific embodiment, a pin 1 is arranged at one end of the strut assembly connected with the upright column 20, so that the strut assembly rotates around the pin 1 relative to the upright column 20; as shown in fig. 5, the central axis of the pin shaft 1 is located below the central axis of the strut assembly, and the central axis of the pin shaft 1 and the central axis of the strut assembly have a height difference, and the central axis of the pin shaft 1 is located below the central axis of the strut assembly, in the state shown in fig. 11, when the rotary strut device 23 is in the support state, the first strut 2 receives a counterclockwise rotation moment in the direction shown in fig. 11, and meanwhile, the setting of the limiting end plate 7 can prevent the first strut 2 from rotating upward, therefore, the central axis of the pin shaft 1 located below the central axis of the strut assembly can enable the support force to play a locking effect on the strut assembly, prevent the strut assembly from rotating downward, and improve the stability of the support state.
Preferably, the end of the strut assembly rotatably connected to the upright post 20 is provided with a reinforcing plate 8, which can improve the deformation resistance and the stability of the supporting state.
As shown in fig. 7 and 8, the fixing component comprises a screw component 4, a first flange 11 and a second flange which is matched and connected with the first flange 11,
the screw assembly 4 is arranged at the other end of the first support rod 2 in a telescopic manner, the second flange is fixedly arranged at the other end of the second support rod 5, and the first flange is arranged at the telescopic end of the screw assembly 4;
screw rod assembly 4 is installed in first vaulting pole 2, and first vaulting pole 2 is provided with the screw hole with screw rod assembly 4 complex.
As shown in fig. 5, a nut 13, a first rib plate 12 and a second rib plate 14 are welded at one end of the second stay bar 5 facing the first stay bar 2, a first screw 15 in the screw assembly 4 can be connected with the nut 13 in a matching manner, a push journal structure is arranged at the end part of the nut 13, and a shaft shoulder is connected with the end surface of the first rib plate 12 facing the nut 13, so that the shearing force borne by a welding seam can be effectively avoided. The screw assembly 4 includes: a first screw 15 having a thread formed at one end thereof and a collar formed at the other end thereof to be connected to a stay bar assembly or a pillar 20;
a seal ring 16, which is sleeved on one end of the first screw 15 provided with threads;
the first flange 11 is provided at the end of the first screw 15 provided with a thread.
It should be noted that, when the brace rod assembly is provided with only one third brace rod 26, one of the screw rod assembly 4 and the second flange plate may be mounted on the upright post 20, and the other may be mounted on the third brace rod 26; when the brace assembly comprises a first brace 2 and a second brace 5, one of the screw assembly 4 and the second flange may be mounted to the first brace 2 and the other to the second brace 5.
After first vaulting pole 2 and second vaulting pole 5 all rotated the position of perpendicular to stand 20 in the in-process of using, revolve the screw rod of twisting in the screw rod subassembly 4, make the screw rod screwed one end stretch out to make the screw rod be connected with nut 13 in the second vaulting pole 5, until first vaulting pole 2 and second vaulting pole 5 with stand 20 top tight support, through fastener 3 with first ring flange 11 and second ring flange fastening connection, avoid first vaulting pole 2 and second vaulting pole 5 to appear deformation or displacement etc. and influence support stability.
In one embodiment, as shown in fig. 12, the brace assembly includes a third brace 26, one end of the third brace 26 being pivotally connected to one of the uprights 20; the fixing assembly is adapted to be connected to the third brace 26 and another upright 20 so that the third brace 26 is fixed to a position perpendicular to the upright 20. The fixing component comprises a clamping part and a clamping groove which is matched with the clamping part for clamping or releasing; the joint portion sets up in vaulting pole subassembly, and the draw-in groove sets up in stand 20. Wherein the joint portion is a second screw 23 connected to the third stay bar 26, the end portion of the second screw 23 is provided with the joint portion, and the clamping groove is arranged on the top plate 24 of the upright post 20.
In the use process, when the portal 21 needs to be supported, the third support rod 26 is rotated to the position vertical to the upright post 20, and the second screw rod 23 is screwed out until the clamping part is in matched clamping connection with the clamping groove, so that the third support rod 26 supports the upright post 20. This particular embodiment may be applicable to the case of a smaller support distance.
In a specific embodiment, as shown in fig. 13, the stay bar assembly includes a first stay bar 2 and a second stay bar 5, the first stay bar 2 is provided with a second screw 23, an end of the second screw 23 is provided with a clamping portion, and one end of the second stay bar 5 facing the first stay bar 2 is provided with a perforated plate 25.
The references to "first", "second" and "third" in the first stay 2, the second stay 5 and the third stay 26, the first screw 15 and the second screw 23, and the first rib 12, the second rib 14 and the third rib 17 in the present specification are only for distinguishing the difference of the positions, and are not in sequence.
The embodiments in the present description are described in a progressive manner, each embodiment focuses on differences from other embodiments, and the same and similar parts among the embodiments are referred to each other. Any combination of all embodiments provided by the present invention is within the scope of the present invention, and will not be described herein.
The rotary brace apparatus provided by the present invention is described in detail above. The principles and embodiments of the present invention are explained herein using specific examples, which are presented only to assist in understanding the method and its core concepts. It should be noted that, for those skilled in the art, it is possible to make various improvements and modifications to the present invention without departing from the principle of the present invention, and those improvements and modifications also fall within the scope of the claims of the present invention.
Claims (10)
1. A rotary support rod device is used for supporting a door frame (21), two upright posts (20) are oppositely arranged on two sides of the door frame (21); characterized in that the rotary brace bar device comprises:
a stay bar assembly, one end of which is rotatably connected to one of the upright posts (20), the stay bar assembly being rotatable to a position perpendicular to the upright post (20);
a fixing assembly for fixing the stay bar assembly to a position perpendicular to the column (20) and supporting the column (20).
2. The rotating brace apparatus of claim 1 wherein the brace assembly comprises a first brace (2) and a second brace (5); one end of the first support rod (2) is rotatably connected to one of the upright columns (20), one end of the second support rod (5) is rotatably connected to the other upright column (20), and the first support rod (2) and the second support rod (5) are oppositely arranged;
the fixing component is used for connecting the first support rod (2) and the second support rod (5) and enabling the first support rod (2) and the second support rod (5) to be perpendicular to the upright post (20).
3. The rotating brace apparatus of claim 1 wherein said brace assembly comprises a third brace (26), one end of said third brace (26) being pivotally connected to one of said uprights (20); the fixing component is used for connecting the third support rod (26) and the other upright post (20) so as to fix the third support rod to a position vertical to the upright post (20).
4. The rotating brace apparatus of claim 2 wherein the securing assembly comprises a threaded rod assembly (4), a first flange (11) and a second flange cooperatively connected with the first flange (11),
the screw assembly (4) is arranged at the other end of the first support rod (2) in a telescopic manner, the second flange is fixedly arranged at the other end of the second support rod (5), and the first flange is arranged at the telescopic end of the screw assembly (4);
the screw rod assembly (4) is installed on the first support rod (2), and the first support rod (2) is provided with a threaded hole matched with the screw rod assembly (4).
5. The rotary brace apparatus of claim 4 wherein the screw assembly (4) comprises:
a first screw (15) with a thread at one end and a collar at the other end connected with the stay bar component;
the sealing ring (16) is sleeved at one end of the first screw rod (15) provided with the threads;
the first flange plate (11) is arranged at one end, provided with the threads, of the first screw rod (15).
6. The rotary brace apparatus of claim 1 wherein the fixing component comprises a clamping portion and a clamping groove which is matched with the clamping portion to be clamped or released;
the clamping portion is arranged on the support rod assembly, and the clamping groove is arranged on the support rod assembly or the upright post (20).
7. The rotating brace bar device of claim 1 wherein the brace bar assembly is a rod-shaped structure, and the lower end surface of one end of the brace bar assembly rotatably connected with the upright (20) is provided with a round chamfer.
8. The rotary brace rod device as recited in claim 7, characterized in that the end surface of the brace rod assembly rotatably connected with the upright (20) is provided with a limit end plate (7), and the limit end plate (7) is positioned at the upper part of the round chamfer.
9. The rotating brace apparatus of claim 7 wherein the end of the brace assembly that is rotatably connected to the upright (20) is provided with a reinforcement plate (8).
10. The rotary brace apparatus as claimed in any one of claims 1 to 9 wherein one end of the brace assembly connected to the upright (20) is provided with a pin (1) to allow the brace assembly to rotate relative to the upright (20) about the pin (1);
the central axis of the pin shaft (1) is positioned at the lower part of the central axis of the stay bar component.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210493353.4A CN114856634A (en) | 2022-05-07 | 2022-05-07 | Rotary support rod device |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210493353.4A CN114856634A (en) | 2022-05-07 | 2022-05-07 | Rotary support rod device |
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| CN114856634A true CN114856634A (en) | 2022-08-05 |
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| CN202210493353.4A Pending CN114856634A (en) | 2022-05-07 | 2022-05-07 | Rotary support rod device |
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