CN219910791U - Temporary connection device for tunnel supporting arch frame - Google Patents
Temporary connection device for tunnel supporting arch frame Download PDFInfo
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- CN219910791U CN219910791U CN202320927851.5U CN202320927851U CN219910791U CN 219910791 U CN219910791 U CN 219910791U CN 202320927851 U CN202320927851 U CN 202320927851U CN 219910791 U CN219910791 U CN 219910791U
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- 229910000831 Steel Inorganic materials 0.000 description 7
- 239000010959 steel Substances 0.000 description 7
- 238000010276 construction Methods 0.000 description 5
- 230000008901 benefit Effects 0.000 description 4
- 238000006073 displacement reaction Methods 0.000 description 4
- 238000009434 installation Methods 0.000 description 4
- 230000008878 coupling Effects 0.000 description 3
- 238000010168 coupling process Methods 0.000 description 3
- 238000005859 coupling reaction Methods 0.000 description 3
- 238000012545 processing Methods 0.000 description 3
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000004064 recycling Methods 0.000 description 2
- 230000004075 alteration Effects 0.000 description 1
- 238000005452 bending Methods 0.000 description 1
- 238000004891 communication Methods 0.000 description 1
- 125000004122 cyclic group Chemical group 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 210000001503 joint Anatomy 0.000 description 1
- 230000007246 mechanism Effects 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 230000001737 promoting effect Effects 0.000 description 1
- 238000003466 welding Methods 0.000 description 1
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- Lining And Supports For Tunnels (AREA)
Abstract
The utility model provides a temporary connection device for a tunnel supporting arch frame, which comprises: the node connecting pieces are clamped on the ends, with larger distance, of the two node connecting plates, and are detachably connected with the two node connecting plates respectively; the arc limiting plate is arranged on the node connecting piece and is connected with the node connecting piece in a mode of being capable of rotating relative to the node connecting piece. According to the utility model, a circular arch detachable structure is formed among the arch frame sections temporarily during lifting through the node connecting piece; and when the arch frame section is lifted through the arc limiting plate, along with the shaking of the arch frame section, the arc limiting plate rotates on the arc where the arc limiting plate is located, and can rotate to be abutted on the upper flange plate of the arch frame section so as to limit the arch frame section.
Description
Technical Field
The utility model relates to the technical field of tunnel construction, in particular to a temporary connection device for a tunnel supporting arch frame.
Background
Tunnel construction is needed in road, railway and urban underground rail transit, steel arch supporting is a necessary means during tunnel construction, the shape of the steel arch needs to be matched with the cross section shape of a tunnel to be a circular arch, and the integral forming processing of the whole steel arch is very difficult to achieve the purpose of one-time processing due to the large cross section size of the tunnel, so that the transportation difficulty is greatly increased. The arches are all dome-shaped structures formed by connecting a plurality of arch segments end to end.
At present, when the arch centering is lifted through the trolley, the single arch centering sections are lifted respectively, which is time-consuming and labor-consuming and increases the positioning difficulty and the installation difficulty.
Disclosure of Invention
In view of the above, the utility model provides a temporary connection device for a tunnel supporting arch frame, which aims to solve the problems that when the existing arch frame is lifted by a trolley, single arch frame sections are lifted respectively, so that time and labor are wasted, and the positioning difficulty and the installation difficulty are increased.
The utility model provides a temporary connection device for a tunnel supporting arch frame, which is characterized in that a plurality of arch frame sections are arranged on the tunnel supporting arch frame, node connection plates are arranged at the end parts of the arch frame sections, and two node connection plates corresponding to the end parts of two adjacent arch frame sections are opposite and are arranged at an included angle; the temporary connection device includes: the node connecting pieces are clamped on the ends, with larger distance, of the end parts of the two node connecting plates, and are respectively detachably connected with the two node connecting plates, so that a wedge-shaped space is formed between the two node connecting plates, and a circular arch detachable structure is formed between the arch frame sections when the arch frame sections are lifted; the arc limiting plate is arranged on the node connecting piece, and is connected with the node connecting piece in a mode that the arc limiting plate can rotate relative to the node connecting piece and used for swinging along with the arch frame section when the arch frame section is lifted, and the arc limiting plate rotates on an arc where the arc limiting plate is located and can rotate to be abutted to the upper flange plate of the arch frame section so as to limit the arch frame section.
Further, the temporary connection device for a tunnel support arch frame, the node connection member comprises: a top plate; the two rib plates are arranged below the top plate side by side, and the top ends of the two rib plates are connected with the top plate and used for being respectively clamped on two sides of the node connecting plate.
Further, in the temporary connection device for the tunnel supporting arch frame, each rib plate is provided with a mounting hole for being detachably connected to the node connection plate.
Further, the temporary connection device for the tunnel support arch frame is characterized in that a connection hole is formed in the node connection plate, a detachable connection piece is detachably connected to the connection hole, and the detachable connection piece sequentially penetrates through one of the two node connection plates, two rib plates and the other of the two node connection plates, so that detachable connection between the node connection piece and the two node connection plates is achieved.
Further, in the temporary connection device for the tunnel supporting arch frame, the dismounting connection piece is a bolt assembly.
Further, in the temporary connection device for the tunnel supporting arch frame, at least two sliding positioning pieces are arranged at the top of the node connecting piece; the inner wall of the arc-shaped limiting plate is provided with a sliding groove, the sliding groove is arranged along the arc of the arc-shaped limiting plate, and each sliding positioning piece is slidably clamped in the sliding groove.
Further, in the temporary connection device for the tunnel supporting arch frame, the sliding positioning piece is of a spherical structure and is connected with the top of the node connecting piece through a connecting rod.
Further, the temporary connecting device for the tunnel supporting arch frame is characterized in that the sliding groove is further communicated with a connecting rod abdicating groove which is matched with the connecting rod and used for abdicating the connecting rod.
Further, in the temporary connection device for the tunnel supporting arch frame, the circle center of the arc-shaped limiting plate and the node connecting piece are arranged on the same side of the arc-shaped limiting plate.
Further, in the temporary connection device for the tunnel supporting arch frame, the two ends of the node connection plates, which are smaller in distance, are detachably connected through the dismounting connection piece.
According to the temporary connection device for the tunnel supporting arch frame, provided by the utility model, the node connecting pieces are detachably connected with the two node connecting plates, and a wedge-shaped space is formed between the two node connecting plates, so that a circular arch detachable structure is temporarily formed between a plurality of sections of arch frame sections during lifting, namely, the arch frame sections to be installed are temporarily connected, the temporary connection is required to keep the number of the arch frame sections of the whole arch frame to be accurate, and the temporary connection is an integral; and be in through the arc limiting plate when the bow member festival section promotes, along with rocking of bow member festival section, the arc limiting plate is followed rotate on the arc that the arc limiting plate is located, can rotate to the butt be in on the upper flange plate of bow member festival section to spacing the bow member festival section, it leads to wasting time and energy and has increased the problem of location degree of difficulty and installation degree of difficulty to promote single bow member festival section respectively when current bow member is promoted through the platform truck. Compared with the prior art, the temporary connecting device has the following advantages:
1. the temporary connecting device is simple and reasonable in structure, high in practicability, capable of providing good temporary connection for the rigid arch frame, providing a foundation for the trolley lifting arch frame, low in cost and capable of being repeatedly used.
2. This temporary connection device passes the light hole through dismantling connecting piece 4 and realizes the interim spacing flexible coupling between the node connecting plate, can link a plurality of bow member sections as an organic wholely and conveniently promote convenient transportation, makes things convenient for constructor to accurately accomplish the rigid connection of bow member section fast, and the temporary connection structure after the rigid connection can dismantle repetitious recycling according to actual conditions.
3. This temporary connection device limits the angle variation of end plate through being the internode connecting piece of rectangle slot form, and the protection bolt avoids the bolt to bear too big stress, further shares the spacing end plate displacement of stress through the arc limiting plate simultaneously, improves connection structure's life and intensity greatly, reduces the potential safety hazard.
4. The temporary connecting device is simple to connect and dismantle, can effectively improve the construction efficiency of the steel arch, and can be popularized and used.
Drawings
Various other advantages and benefits will become apparent to those of ordinary skill in the art upon reading the following detailed description of the preferred embodiments. The drawings are only for purposes of illustrating the preferred embodiments and are not to be construed as limiting the utility model. Also, like reference numerals are used to designate like parts throughout the figures. In the drawings:
fig. 1 is a front view of a temporary connection device for a tunnel supporting arch frame according to an embodiment of the present utility model;
fig. 2 is a perspective view of a temporary connection device for a tunnel supporting arch frame according to an embodiment of the present utility model;
FIG. 3 is a cross-sectional view of an arcuate stop plate provided in an embodiment of the present utility model;
fig. 4 is a cross-sectional view of a node connection mechanism according to an embodiment of the present utility model.
Detailed Description
Exemplary embodiments of the present disclosure will be described in more detail below with reference to the accompanying drawings. While exemplary embodiments of the present disclosure are shown in the drawings, it should be understood that the present disclosure may be embodied in various forms and should not be limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete, and will fully convey the scope of the disclosure to those skilled in the art. It should be noted that, without conflict, the embodiments of the present utility model and features of the embodiments may be combined with each other. The utility model will be described in detail below with reference to the drawings in connection with embodiments.
Referring to fig. 1 to 2, a preferred structure of a temporary connection device for a tunnel support arch according to an embodiment of the present utility model is shown. As shown in the figure, the tunnel supporting arch frame is provided with a plurality of arch frame sections 1, the end parts of each arch frame section 1 are respectively provided with a node connecting plate 11, and two node connecting plates 11 corresponding to the end parts of two adjacent arch frame sections 1 are opposite and are arranged at an included angle. Specifically, in the dome-shaped structure formed by connecting the arch segments 111 end to end, two end portions of the arch segments 1 are respectively provided with a node connecting plate 11, each node connecting plate 11 is arranged at an included angle with the tangential direction of the arch segment 1, when two adjacent arch segments 1 are in butt joint, each node connecting plate 11 is arranged at an included angle, and the distance between each node connecting plate 11 is gradually increased from the end portion close to the center of the arch segment 1 to the end portion far away from the center of the arch segment 1, as shown in fig. 1, from bottom to top.
As shown in fig. 1 and 2, the temporary connection device includes: the joint connector 2 and the arc limiting plate 3; wherein,,
the node connecting pieces 2 are clamped on the ends (top ends shown in fig. 1) with larger distances from the ends of the two node connecting plates 11, and the node connecting pieces 2 are respectively detachably connected with the two node connecting plates 11, so that a wedge-shaped space is formed between the two node connecting plates 11, and a circular arch detachable structure is temporarily formed between the arch segments 11 during lifting. Specifically, the two node connection plates 11 can be detachably connected through the node connection piece 2, so that a wedge-shaped space is formed between the two node connection plates 11, and a circular arch-shaped detachable structure is temporarily formed between the arch segments 1 during lifting, so that the whole lifting is facilitated. Wherein, the adjacent arch frame sections 1 are connected end to end through the node connecting plates 11 to form a complete arch frame. In this embodiment, the ends (the bottom ends as shown in fig. 1) of the two node connecting plates 11 with a larger distance from the ends can be detachably connected by the detachable connecting piece 4, so as to realize the connection of the two ends between the two node connecting plates 11, and further ensure the connection stability between the two node connecting plates 11. The detachable connecting piece 4 can be a bolt assembly, so that detachable connection and fixation between the two node connecting plates 11 can be realized; the downside of two node connection boards 11 is connected through two dismantlement connecting pieces 4, and the upside of two node connection boards 11 is provided with node connection piece 2 and is connected through two dismantlement connecting pieces 4, dismantlement connecting pieces 4 pass the upper portion and the node connection piece 2 of two node connection boards 11 simultaneously, form wedge space between two adjacent node connection boards 11.
The arc limiting plate 3 is arranged on the node connecting piece 2, and the arc limiting plate 3 is connected with the node connecting piece 2 in a mode of being capable of rotating relative to the node connecting piece 2 and is used for swinging along with the arch frame section 1 when the arch frame section 1 is lifted, and the arc limiting plate 3 rotates on an arc where the arc limiting plate 3 is located and can rotate to be abutted to the upper flange plate 12 of the arch frame section 1 so as to limit the arch frame section 1. Specifically, the arc limiting plate 3 is disposed on the node connecting piece 11, so that the arc limiting plate 3 spans over the two node connecting pieces 11 and can be inscribed with the node connecting pieces 11, and the circle center of the arc limiting plate 3 can be used as a rotation point for rotating, so that when the dome-shaped detachable structure is integrally lifted, the arc limiting plate 3 can be rotated to one end (the left end as shown in fig. 1) to be abutted on the upper flange plate 12 of the left arch segment 1, so that the left arch segment 1 is limited, that is, the arc limiting plate 3 can limit at least one arch segment 1, so as to ensure the stability of the dome-shaped detachable structure integrally lifted. The circle center of the arc-shaped limiting plate 3 and the node connecting piece 2 are arranged on the same side (the lower side shown in fig. 1) of the arc-shaped limiting plate 3, and the arc-shaped limiting plate 3 and the node connecting piece 2 are connected in a sliding mode so that rotation of the arc-shaped limiting plate 3 can be achieved through sliding.
With continued reference to fig. 1 and 3, the node connection 2 comprises: a top plate 21 and two rib plates 22; wherein, two rib plates 22 are arranged side by side below the top plate 21 (with respect to the position shown in fig. 3), and the top ends of the two rib plates 22 (with respect to the position shown in fig. 3) are connected to the top plate 21, so as to be respectively clamped on two sides (left and right sides as shown in fig. 1) of the two node connection plates 11. Specifically, two rib plates 22 may be disposed side by side and spaced below the top plate 21 along the length direction of the top plate 21, and the top ends of the rib plates 22 may be connected to the bottom wall of the top plate 21 to form an approximately pi-shaped structure. The top plate 21 and the two rib plates 22 may be integrally formed, or may be connected by other connection methods, which is not limited in this embodiment. The two rib plates 22 can be symmetrically and fixedly connected to the bottom end surface of the top plate 21, and the node connecting piece 2 is in a channel steel shape.
In this embodiment, each rib 22 is provided with a mounting hole for detachably connecting to the node connecting plate 11. Specifically, the detachable connection between the rib plate 22 and the node connecting plates 11 can be realized through the parts arranged at the mounting holes, and further the detachable connection between the two node connecting plates 11 can be realized. The two rib plates 22 are provided with mounting holes for the detachable connecting piece 4 to pass through. The design through node connecting piece 2 has shared the connection stress of part node connecting plate 11 and dismantlement connecting piece 4, avoids dismantlement connecting piece 4 damage excessively, provides double protection spacing, fully guarantees temporary connection stability and security between the node connecting plate 11. The dismounting connecting piece 4 sequentially passes through one of the two rib plates 22, the two node connecting plates 11, and the other of the two rib plates 22, and the two rib plates 22 limit the two node connecting plates 11.
In this embodiment, the node connecting plate 11 is provided with a connecting hole, and the detachable connecting piece 4 is detachably connected to the connecting hole, and the detachable connecting piece 4 sequentially passes through one of the two rib plates 22, the two node connecting plates 11, and the other of the two rib plates 22, so as to realize the detachable connection between the node connecting piece 2 and the two node connecting plates 11. Specifically, the detachable connection member 4 may be a bolt assembly, and a bolt rod thereof may sequentially pass through one of the two rib plates 22, the two node connection plates 11, and the other one of the two rib plates 22, so as to realize detachable connection between the node connection member 2 and the two node connection plates 11. Wherein, offer on the node connecting plate 11 and have upper side dismantlement connecting piece 4 first connecting hole that passes, offer on the node connecting plate 11 and supply the downside to dismantle the second connecting hole that connecting piece 4 passed, first connecting hole and second connecting hole are the unthreaded hole and the aperture is greater than the external diameter through this fenestrate dismantlement connecting piece 4, and two dismantlement connecting pieces 4 all coupling nut. Because the arch is arch, then when promoting, the lower extreme of adjacent node connecting plate 11 will contact the roof pressure, and the upper end can separate and form a wedge space, so the length that is located the dismantlement connecting piece 4 of below is less than the dismantlement connecting piece 4 that is located the top, accomplishes the temporary connection to two arch segments 1 through two dismantlement connecting pieces 4, and temporary connection is non-rigid connection, safe and reliable promotes safety, makes things convenient for later stage rigid connection node connecting plate 11.
With continued reference to fig. 3 and 4, the top of the node connection 2 is provided with at least two sliding retainers 23; the inner wall of the arc-shaped limiting plate 3 is provided with a sliding groove 31 which is arranged along the arc of the arc-shaped limiting plate 3, and each sliding positioning piece 23 is slidably clamped in the sliding groove 31. Specifically, two sliding positioning members 23 may be respectively disposed at two ends (left and right ends as shown in fig. 1) of the top plate 21 in the length direction, and a through-length sliding groove 31 may be disposed in the arc-shaped limiting plate 3 along the radian direction thereof, so as to guide the rotation of the arc-shaped limiting plate 3 through the cooperation between the sliding groove 31 and the two sliding positioning members 23.
In this embodiment, the sliding positioning member 23 has a spherical structure, and is connected to the top of the node connecting member 2 through a connecting rod 24; as shown in fig. 4, the sliding groove 31 is further connected to a link-rod yielding groove 32, which is adapted to the connecting rod 24, and is used for yielding the connecting rod 24. Specifically, the center positions of the two sides of the top end surface of the top plate 21 are connected with sliding positioning pieces 23 through connecting rods 24, and the bottom end surface of the arc-shaped limiting plate 3 is provided with sliding grooves 31 and connecting rod abdicating grooves 32 which are matched with the sliding positioning pieces 23 and the connecting rods 24 to slide respectively.
When the arch frame is lifted, the sliding positioning piece 23 slides back and forth in the sliding groove 31 along with the shaking of the top plate 21, so that the relative displacement between the node connecting plates 11 is limited, the dismounting connecting pieces 4 and the node connecting pieces 2 are further protected, and the connecting structure can be recycled for a plurality of times. The inner side of the arc limiting plate 3 is positioned above the arch frame section 1, when the arc limiting plate 3 slides to the limit position, the arc limiting plate 3 contacts with the jacking arch frame section 1 to avoid separating from the sliding groove 31, and the arc limiting plate 3 directly contacts with the arch frame section 1 to achieve the purpose of limiting the displacement of the arch frame section 1.
When the temporary connecting device is used, each arch segment 1 is firstly processed and completed through bending I-steel in a processing factory, then the arch segments 1 are transported to a trolley, connecting and dismounting connecting pieces 4 are firstly connected and dismounted, then node connecting pieces 2 are connected and dismounted, a plurality of arch segments 1 are connected end to end, the arch reaches a designed lining position under the lifting of the trolley, after the contact between the node connecting plates 11 is adjusted, the node connecting plates 11 are welded, the rigid connection of the arch segments 1 is completed, namely, the temporary connection can be gradually replaced by the modes of welding, high-strength bolt connection and the like after the arch segments arrive at the arch mounting position, the arch is finally mounted, and after the rigid connection is completed, the four dismounting connecting pieces 4 and the node connecting pieces 2 are sequentially dismounted for cyclic reuse.
In summary, the temporary connection device for the tunnel supporting arch frame provided in this embodiment is detachably connected with two node connection plates 11 through the node connection piece 2, and a wedge-shaped space is formed between the two node connection plates 11, so that a circular arch detachable structure is temporarily formed between the arch frame segments 11 during lifting, that is, the arch frame segments to be installed are temporarily connected, the temporary connection is required to keep the number of arch frame segments of the whole arch frame to be accurate, and the preliminary connection is an integral; and when lifting the arch frame section 1 through the arc limiting plate 3, along with rocking of the arch frame section 1, the arc limiting plate 3 rotates on the arc where the arc limiting plate 3 is located, and can rotate to be abutted on the upper flange plate 12 of the arch frame section 1 so as to limit the arch frame section 1, and the problems that time and labor are wasted, positioning difficulty and installation difficulty are increased due to the fact that a single arch frame section is lifted respectively when an existing arch frame is lifted through a trolley are solved. Compared with the prior art, the temporary connecting device has the following advantages:
1. the temporary connecting device is simple and reasonable in structure, high in practicability, capable of providing good temporary connection for the rigid arch frame, providing a foundation for the trolley lifting arch frame, low in cost and capable of being repeatedly used.
2. This temporary connection device passes the light hole through dismantling connecting piece 4 and realizes the interim spacing flexible coupling between the node connecting plate, can link a plurality of bow member sections as an organic wholely and conveniently promote convenient transportation, makes things convenient for constructor to accurately accomplish the rigid connection of bow member section fast, and the temporary connection structure after the rigid connection can dismantle repetitious recycling according to actual conditions.
3. This temporary connection device limits the angle variation of end plate through being the internode connecting piece of rectangle slot form, and the protection bolt avoids the bolt to bear too big stress, further shares the spacing end plate displacement of stress through the arc limiting plate simultaneously, improves connection structure's life and intensity greatly, reduces the potential safety hazard.
4. The temporary connecting device is simple to connect and dismantle, can effectively improve the construction efficiency of the steel arch, and can be popularized and used.
It should be noted that, in the description of the present utility model, terms such as "upper," "lower," "left," "right," "inner," "outer," and the like indicate directions or positional relationships based on the directions or positional relationships shown in the drawings, which are merely for convenience of description, and do not indicate or imply that the apparatus or elements must have a specific orientation, be constructed and operated in a specific orientation, and thus should not be construed as limiting the present utility model.
Furthermore, it should be noted that, in the description of the present utility model, unless explicitly specified and limited otherwise, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be either fixedly connected, detachably connected, or integrally connected, for example; 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 can be understood by those skilled in the art according to the specific circumstances.
It will be apparent to those skilled in the art that various modifications and variations can be made to the present utility model without departing from the spirit or scope of the utility model. Thus, it is intended that the present utility model also include such modifications and alterations insofar as they come within the scope of the appended claims or the equivalents thereof.
Claims (10)
1. A temporary connection device for a tunnel supporting arch frame is characterized in that,
the tunnel supporting arch frame is provided with a plurality of arch frame sections, the end parts of each arch frame section are provided with node connecting plates, and two node connecting plates corresponding to the end parts of two adjacent arch frame sections are opposite and are arranged at an included angle;
the temporary connection device includes:
the node connecting pieces are clamped on the ends, with larger distance, of the end parts of the two node connecting plates, and are respectively detachably connected with the two node connecting plates, so that a wedge-shaped space is formed between the two node connecting plates, and a circular arch detachable structure is formed between the arch frame sections when the arch frame sections are lifted;
the arc limiting plate is arranged on the node connecting piece, and is connected with the node connecting piece in a mode that the arc limiting plate can rotate relative to the node connecting piece and used for swinging along with the arch frame section when the arch frame section is lifted, and the arc limiting plate rotates on an arc where the arc limiting plate is located and can rotate to be abutted to the upper flange plate of the arch frame section so as to limit the arch frame section.
2. The temporary connection device for a tunnel support arch according to claim 1, wherein the node connection comprises:
a top plate;
the two rib plates are arranged below the top plate side by side, and the top ends of the two rib plates are connected with the top plate and used for being respectively clamped on two sides of the node connecting plate.
3. The temporary connection device for tunnel supporting arches according to claim 2, characterized in that,
and each rib plate is provided with a mounting hole for being detachably connected to the node connecting plate.
4. The temporary connection device for tunnel supporting arch according to claim 3, wherein,
the connecting plate is provided with a connecting hole, and the connecting hole is detachably connected with a disassembly connecting piece, and the disassembly connecting piece sequentially penetrates through one of the two connecting plates, the two rib plates and the other of the two connecting plates so as to realize the detachable connection between the connecting piece and the two connecting plates.
5. The temporary connection device for a tunnel support arch according to claim 4, wherein the detachable connection is a bolt assembly.
6. The temporary connection device for a tunnel support arch according to any one of claims 1 to 5, wherein,
at least two sliding positioning pieces are arranged at the top of the node connecting piece;
the inner wall of the arc-shaped limiting plate is provided with a sliding groove, the sliding groove is arranged along the arc of the arc-shaped limiting plate, and each sliding positioning piece is slidably clamped in the sliding groove.
7. The temporary connection device for tunnel supporting arch according to claim 6, wherein,
the sliding positioning piece is of a spherical structure and is connected with the top of the node connecting piece through a connecting rod.
8. The temporary connection device for tunnel supporting arch according to claim 7, wherein,
the sliding groove is also communicated with a connecting rod abdicating groove which is matched with the connecting rod and used for abdicating the connecting rod.
9. The temporary connection device for a tunnel support arch according to any one of claims 1 to 5, wherein,
the circle center of the arc limiting plate and the node connecting piece are arranged on the same side of the arc limiting plate.
10. The temporary connection device for a tunnel support arch according to any one of claims 1 to 5, wherein,
the two ends of the node connecting plates, which are smaller in distance, are detachably connected through a detaching connector.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320927851.5U CN219910791U (en) | 2023-04-23 | 2023-04-23 | Temporary connection device for tunnel supporting arch frame |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320927851.5U CN219910791U (en) | 2023-04-23 | 2023-04-23 | Temporary connection device for tunnel supporting arch frame |
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| Publication Number | Publication Date |
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| CN219910791U true CN219910791U (en) | 2023-10-27 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202320927851.5U Active CN219910791U (en) | 2023-04-23 | 2023-04-23 | Temporary connection device for tunnel supporting arch frame |
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| Country | Link |
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| CN (1) | CN219910791U (en) |
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- 2023-04-23 CN CN202320927851.5U patent/CN219910791U/en active Active
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