Locking assembly for connecting foldable steel arches

Abstract

The utility model discloses a locking assembly for connection of a foldable steel arch frame, which comprises a fixed seat, a fixed clamping piece, a locking piece, a locking piece and a locking piece, and is characterized in that the lower part of one end of the fixed seat is fixedly connected with the fixed clamping piece; the movable clamping piece and the fixed clamping piece are oppositely arranged, and the movable clamping piece is detachably installed on the lower portion of the other end of the fixed base through a locking piece; the jacking adjusting assembly is rotationally connected to the middle of the upper end of the fixing base, and the lower end of the jacking adjusting assembly is located in the fixing base; the limiting locking clamping base is connected to the upper portion of the working end of the fixing base in a rotating and adjusting mode through a connecting assembly. In the steel arch mounting or folding process, the stability and safety of the structure are ensured, an operator is helped to fix the end connecting plate of the foldable steel arch when the steel arch is unfolded, the safety problem caused by human intervention is reduced, the protection effect is achieved when the steel arch is mounted and dismounted, and the safety of the steel arch is improved. And structure instability or damage caused by misoperation or negligence is avoided.

Description

Technical Field

[0001] This utility model relates to a locking component, specifically a locking component for connecting foldable steel arch frames, used to temporarily limit and fix two adjacent steel arch frames, belonging to the field of tunnel construction engineering technology. Background Technology

[0002] As is well known, in the field of tunnel construction and underground engineering, steel arch frames are an important support structure, and their installation speed, quality, and stability play a crucial role in the safety and efficiency of tunnel construction. Especially under adverse geological conditions, the installation quality of steel arch frames directly affects the stability of the tunnel structure and the personal safety of construction workers.

[0003] Traditional steel arch frame installation methods typically involve pre-assembling the steel arch frames at the tunnel entrance or within the tunnel work area, based on construction requirements. These components are generally divided into several sections, which are first assembled on the ground to ensure precise connections. During assembly and connection, the steel arch frames are usually connected by bolts or welding to ensure stability and reliability during installation.

[0004] With the development of technology, foldable steel arch frame technology has been gradually applied in recent years. Foldable steel arch frames, through the design of specific hinged structures, allow the steel arch frames to be folded into a smaller volume during transportation and installation, thus facilitating transport and installation. Furthermore, when assembling steel arch frames, it is necessary to secure them together. Existing methods typically involve manually welding the spaced-apart steel arch frames together at a height, which is not only difficult to operate but also poses significant safety hazards. This is especially true when the distance between the steel arch frames and the tunnel surrounding rock is small, making manual operation even more difficult and prone to accidents.

[0005] Furthermore, the traditional method of manually transporting and installing sections one by one is not only slow and time-consuming during tunnel construction, but also extremely difficult and cumbersome due to the limited space inside the tunnel, especially in smaller cross-section tunnels. It also makes it hard to guarantee the quality of the installation. During the installation of the steel arches, temporary supports or wedge-shaped blocks are usually used to secure them and prevent movement. For convenience, several workers often work together on-site, continuously lifting or supporting the steel arches as they are unfolded until the bolts on the connecting plates at the ends of adjacent arches are tightened. This method is time-consuming, labor-intensive, inefficient, and poses significant safety hazards. In short, it is very inconvenient.

[0006] Therefore, the key to solving the above-mentioned technical problems lies in researching a temporary locking component for the auxiliary installation of foldable steel arch frames with high safety and high reliability. Summary of the Invention

[0007] To address the numerous defects and shortcomings in the aforementioned background technology, this utility model has made improvements and innovations, aiming to provide a novel design and simple, reasonable construction that ensures the stability and safety of the structure during the installation or folding of the steel arch frame. Especially during the construction or installation phase, the locking component prevents the steel arch frame from accidentally folding or moving, thereby avoiding potential dangers to operators and the surrounding environment. It also helps operators secure the end connecting plates of the foldable steel arch frame when unfolding it, reducing the complexity of human intervention and associated safety hazards, improving operational efficiency and safety. Furthermore, it reduces installation time, enabling rapid fixation of the foldable steel arch frame during erection, avoiding repeated operations and adjustments, significantly improving efficiency, saving labor costs, and enhancing safety by preventing safety hazards caused by direct human operation.

[0008] To solve the above problems and achieve the above-mentioned invention objectives, this utility model provides a locking assembly for connecting foldable steel arch frames, achieved through the following design structure and the following technical solution:

[0009] A locking assembly for connecting foldable steel arch frames includes a locking mechanism for temporarily locking and limiting a first steel arch frame (7) and a second steel arch frame (8), the locking assembly comprising:

[0010] A fixing base (1) is fixedly connected to a fixing clip (11) at the lower part of one end of the fixing base (1);

[0011] The movable card assembly (2) is arranged opposite to the fixed card assembly (11) and is detachably installed on the lower part of the other end of the fixed base (1) by means of the locking member (3);

[0012] The tightening adjustment component (4) is rotatably connected to the upper middle part of the fixed base (1), and the lower end of the tightening adjustment component (4) is located inside the fixed base (1).

[0013] Limit locking seat (5) is connected to the upper part of the working end of the fixed seat (1) by rotating and adjusting the connecting component (6).

[0014] Preferably, the fixing base (1) and the fixing fastener (11) are integrally formed;

[0015] A mounting base (12) for installing a limit locking bracket (5) and a connecting component (6) is provided symmetrically and outwardly at the upper part of the working end of the fixed base (1);

[0016] A locking limit hole (13) for the locking member (3) to pass through is provided at the lower middle position of the other end of the fixed base (1). The locking limit hole (13) is a bolt hole.

[0017] A mounting hole (14) is provided at the upper middle part of the fixed base (1) for the tightening adjustment assembly (4) to pass through. The mounting hole (14) is a bolt hole.

[0018] Preferably, a limiting baffle (15) is also provided on the fixed base (1), and the limiting baffle (15) extends downward and is connected to the opposite end of the mounting base (12).

[0019] Preferably, the fixing fastener (11) is an L-shaped plate-shaped component, and a first anti-slip pad (111) matching it is provided on the inner surface of the L-shaped plate-shaped component;

[0020] The mounting base (12) is open at one end and has an L-shaped structure. Mounting and fixing holes are provided on both the front and back sides of the L-shaped mounting base (12).

[0021] Preferably, the movable locking component (2) is an L-shaped plate-shaped component, and a locking connection hole (21) for the locking component (3) to pass through is provided on the front and back sides of the L-shaped plate-shaped component. The locking connection hole (21) is a bolt hole.

[0022] Preferably, a second anti-slip pad (22) is provided on the inner surface of the movable latch (2) to match it.

[0023] Preferably, the locking member (3) includes:

[0024] The locking rod (31) passes through the locking connection hole (21) and the locking limit hole (13) from the outside to the inside and is then connected to the fixing seat (1) as a whole.

[0025] Locking handle (32) is connected to the free end of locking rod (31).

[0026] Preferably, the locking rod (31) is a screw rod or a lead screw with an external thread section;

[0027] The locking handle (32) is disc-shaped, T-shaped, or star-shaped.

[0028] Preferably, the clamping adjustment assembly (4) includes:

[0029] The clamping rod (41) is a screw or lead screw with an external thread section on its outer wall;

[0030] The clamping handle (42) is connected to one end of the clamping rod (41);

[0031] A tightening head (43) is connected to the other end of a tightening rod (41), wherein,

[0032] The clamping head (43) is a round or square plate-shaped component. The round or square plate-shaped component and the clamping rod (41) are detachably connected or directly processed into an integral structure.

[0033] Preferably, the limiting locking seat (5) includes:

[0034] A connecting post (51) is provided at its upper end with a connecting post connecting surface;

[0035] The locking component (52) has one end connected to the middle of the connecting surface of the connecting column. The connecting end of the locking component (52) has a through-hole for connecting shaft. The lower part of the locking component (52) has an inwardly inclined slot, which is L-shaped in general.

[0036] The connection component (6) includes:

[0037] Connecting shaft (61) is used to rotatably connect the locking member (52) to the mounting base (12) by passing through the connecting shaft connecting hole;

[0038] Torsion spring (62) is symmetrically sleeved on both ends of connecting shaft (61), and one end of the elastic arm of torsion spring (62) is in contact with the connecting surface of connecting column, and the other end of the elastic arm of torsion spring (62) is in contact with the inner wall of the corresponding end of mounting base (12).

[0039] The beneficial effects of this utility model compared with the prior art are:

[0040] 1. This utility model features a novel design and a simple and reasonable structure, ensuring the stability and safety of the structure during the installation or folding of the steel arch frame. Especially during the construction or installation phase, the locking components prevent accidental folding or movement of the steel arch frame, thus avoiding potential dangers to operators and the surrounding environment.

[0041] 2. The temporary locking component of this utility model can help operators fix the end connecting plate of the foldable steel arch frame when unfolding the steel arch frame, reducing the complexity of human intervention, improving operation efficiency, reducing installation time, and achieving rapid fixation of the foldable steel arch frame during the construction process. This avoids repeated operations and adjustments, which can significantly improve efficiency, save labor costs, and improve safety, avoiding safety hazards caused by direct human operation.

[0042] 3. The temporary locking component of this utility model can effectively increase the stability of the structure when locking certain parts of the foldable steel arch frame. This is especially important when constructing in windy or other unstable environments, to prevent the steel arch frame from tilting or collapsing due to external forces or unstable factors.

[0043] 4. The temporary locking component of this utility model plays a protective role during the installation and disassembly of the steel arch frame, avoiding structural instability or damage due to improper operation or negligence. During disassembly, the temporary locking component also provides a clear locking mark to ensure that the operator does not miss the steps at critical nodes, thereby reducing the risk of misoperation.

[0044] 5. This utility model is easy to install and dismantle. During installation or dismantling, the construction personnel only need to snap the locking component of the above-designed structure onto the foldable I-beam and tighten or loosen the locking and fixing components through the locking parts and the top tightening adjustment components. The operation is convenient and simple and does not require professional operation.

[0045] 6. This utility model is equipped with a torsion spring, which can provide a stable locking force when the steel arch frame is folded or unfolded. Through the elastic action of the torsion spring, it can ensure that the locking component can quickly restore and fix a certain position of the foldable steel arch frame when needed, thereby preventing accidental movement or deformation and ensuring the stability of the structure.

[0046] 7. The design of the torsion spring in this utility model allows it to automatically return to its original position when the locking component is released. That is, when the operator unlocks or needs to adjust the steel arch frame, the torsion spring can automatically drive the locking component back to its initial state, reducing human intervention, simplifying the operation process, and improving work efficiency;

[0047] 8. The exterior of this utility model is coated with anti-rust paint and a waterproof layer, which can prevent rusting and extend the service life of the entire device. It is environmentally friendly and saves resources. At the same time, the exterior of the device is coated with a self-luminous fluorescent material, which can clearly mark the location of the laying device at night or in dark indoor or underground construction environments. It can effectively play a safety warning role, improve visibility, make it easy for people to identify, and increase safety in construction and life. Attached Figure Description

[0048] The specific embodiments of this utility model will be further described in detail below with reference to the accompanying drawings, wherein:

[0049] Figure 1 This is one of the schematic diagrams showing the usage state of this utility model;

[0050] Figure 2 This is the second schematic diagram of the usage state of this utility model;

[0051] Figure 3 This is the third schematic diagram of the usage state of this utility model;

[0052] Figure 4 This is the fourth schematic diagram of the usage state of this utility model;

[0053] Figure 5 This is the fifth schematic diagram of the usage state of this utility model;

[0054] Figure 6 yes Figure 5 A magnified schematic diagram of the structure at position A shown;

[0055] Figure 7 This is the sixth schematic diagram of the usage state of this utility model;

[0056] Figure 8 yes Figure 7 A magnified schematic diagram of the local structure at position B shown;

[0057] Figure 9 This is the seventh schematic diagram of the usage state of this utility model;

[0058] Figure 10 yes Figure 9 A magnified schematic diagram of the local structure at position C shown;

[0059] Figure 11 This is one of the schematic diagrams of the overall assembly structure of this utility model;

[0060] Figure 12 This is the second schematic diagram of the overall assembly structure of this utility model;

[0061] Figure 13 This is an exploded view of the overall structure of this utility model;

[0062] Figure 14 This is an exploded view of another design structure of this utility model;

[0063] Figure 15 This is the sixth schematic diagram of the usage state of this utility model;

[0064] In the figure, the numbers are: 1—fixed seat, 11—fixed fastener, 111—first anti-slip pad, 12—mounting seat, 13—locking limit hole, 14—mounting hole, 15—limiting baffle.

[0065] 2—Modular clip assembly; 21—Locking connection hole; 22—Second anti-slip pad;

[0066] 3—Locking component, 31—Locking rod, 32—Locking handle;

[0067] 4—Tightening adjustment assembly, 41—Tightening rod, 42—Tightening handle, 43—Tightening head;

[0068] 5—Limit locking seat,

[0069] 6—Connecting assembly; 61—Connecting shaft; 62—Torsion spring;

[0070] 7—First steel arch frame;

[0071] 8—Second steel arch frame. Detailed Implementation

[0072] To make the technical means, inventive features, objectives, and effects of this utility model readily understandable, the technical solution of this utility model will be further described in detail below with reference to the accompanying drawings and specific embodiments. It should be noted that, unless otherwise specified, the embodiments and features in the embodiments of this application can be combined with each other. The present utility model will now be described in detail with reference to the accompanying drawings and embodiments.

[0073] Example 1

[0074] like Figures 1 to 13 A locking assembly for connecting foldable steel arch frames is shown, comprising a locking component for temporarily locking and limiting the first and second steel arch frames, characterized in that the locking assembly includes:

[0075] The fixed base has a fixed locking component fixedly connected to the lower part of one end;

[0076] The movable clip assembly is positioned opposite to the fixed clip assembly and is detachably installed on the lower part of the other end of the fixed base by a locking component;

[0077] The clamping adjustment component is rotatably connected to the upper middle part of the fixed base, and the lower end of the clamping adjustment component is located inside the fixed base;

[0078] The limit locking seat is connected to the upper part of the working end of the fixed seat by rotating and adjusting the connecting component.

[0079] In this utility model, the fixed seat is connected to the end of the first steel arch frame through a movable locking part and a tightening adjustment part, and the non-rotating end of the limiting locking seat is used to contact and lock the end of the second steel arch frame.

[0080] Furthermore, the fixing base and the fixing fastener are integrally formed;

[0081] A mounting base for installing a limit locking bracket and connecting components is provided symmetrically and outwardly at the upper part of the working end of the fixed base;

[0082] A locking limit hole is provided at the lower middle position of the other end of the fixed base for the locking component to pass through. The locking limit hole is a bolt hole.

[0083] A mounting hole is provided at the upper center of the fixed base for the tightening adjustment assembly to pass through. The mounting hole is a bolt hole.

[0084] Specifically, such as Figure 14 As shown, a limiting baffle is also provided on the fixed base, and the limiting baffle extends downward and is connected to the opposite end of the mounting base.

[0085] In this utility model, the limiting baffle and the fixing seat are integrally formed.

[0086] Furthermore, such as Figure 13 As shown, the locking element includes:

[0087] The locking rod passes through the locking connection hole and the locking limit hole from the outside to the inside and is then connected to the fixed base as a whole.

[0088] The locking handle is connected to the free end of the locking lever.

[0089] Furthermore, such as Figures 12 to 14 As shown, the limiting locking seat includes:

[0090] A connecting column, the upper end of which is provided with a connecting column connecting surface;

[0091] The locking component has one end connected to the middle of the connecting surface of the connecting column. The connecting end of the locking component has a through-hole for connecting shaft. The lower part of the locking component has an inwardly inclined slot, which is L-shaped in overall structure.

[0092] The connection component includes:

[0093] A connecting shaft is used to rotatably connect the locking element to the mounting base by passing through a connecting shaft connection hole;

[0094] A torsion spring is symmetrically sleeved at both ends of the connecting shaft, with one end of the torsion spring abutting against the connecting surface of the connecting column, and the other end of the torsion spring abutting against the inner wall of the corresponding end of the mounting base.

[0095] Before use, a locking assembly for connecting foldable steel arches in the above-described design structure needs to be installed as a backup.

[0096] This embodiment 1 illustrates the specific implementation method using the installation and use of two steel arch frames:

[0097] Before use, the inner ends of the first steel arch frame and the second steel arch frame are rotatably connected together.

[0098] When using:

[0099] Step 1: The operator first installs this utility model on the outer end of the first steel arch frame, and on the outer side of the end that contacts the second steel arch frame;

[0100] During installation, the operator first adjusts the clamping head by holding the clamping handle, so that the clamping head is tightly against the inner wall of the fixed seat;

[0101] Then, the operator attaches the fixing seat to the upper side edge of the first steel arch frame;

[0102] Next, the operator attaches the movable locking assembly to the other side of the outer end of the first steel arch frame and aligns the locking connection hole with the locking limit hole. Then, the movable locking assembly is locked into the locking limit hole of the fixed base by the locking device; the limit baffle is used to limit the left and right movement of the movable locking assembly.

[0103] Finally, the operator rotates the clamping handle, which in turn causes the clamping rod, which is fixedly connected to it, to rotate within the mounting hole. This causes the clamping head, which is fixedly connected to the lower end of the clamping rod, to gradually clamp and connect with the top surface of the first steel arch frame, thus completing the installation of this utility model on the outer end of the first steel arch frame.

[0104] Step 2: Deploy the first and second steel arch frames; during use, the hoisting equipment holds the second steel arch frame, and the first steel arch frame gradually unfolds under the action of gravity. During the unfolding process, the limiting locking seat at the end of the first steel arch frame begins to move towards the outer end of the second steel arch frame.

[0105] Step 3: The limit locking seat automatically locks the connecting plate at the end of the second steel arch frame; with the assistance of another operator, rotate the first steel arch frame so that it and the second steel arch frame are in contact. When the outer ends of the two steel arch frames are unfolded to the predetermined position, the connecting plate at the end of the second steel arch frame first abuts against the connecting column. As the two steel arch frames gradually unfold, the connecting plate at the end of the second steel arch frame rotates along the connecting shaft against the connecting column until the non-connecting end of the connecting column is pressed into the mounting seat. At the same time, during the rotation of the connecting column, the connecting column drives the lock fixedly connected to it. The stop member overcomes the elastic effect of the torsion spring and gradually engages with the connecting plate at the end of the second steel arch frame through the slot on the locking member; after the two steel arch frames are fully deployed, the limiting locking seat automatically locks the connecting plate at the end of the second steel arch frame; due to the matching and engaging design of the slot on the locking member and the connecting plate, the slot can immediately engage the connecting plate and fix the outer end position under the action of gravity; the limiting locking seat automatically locks at the contact position of the connecting plates at the ends of the two steel arch frames, ensuring a stable connection between the connecting plate at the end of the second steel arch frame and the limiting locking seat at the outer end of the first steel arch frame.

[0106] Step 4: Adjust the position and confirm that the limit locking bracket is fixed; After the locking part is fastened to the connecting plate at the end of the second steel arch frame, the operator can slightly adjust the outer ends of the two steel arch frames to ensure that the limit locking bracket is completely fixed and the connecting plate at the end of the second steel arch frame no longer moves. At this time, the outer end is stable and does not need to be pushed by hand. This avoids the problem of having to tighten the screws before removing the manual labor, which is time-consuming and laborious.

[0107] Step 5: Reinforcing the connection between the first and second steel arch frames: Once the limit locking seat is locked, a crane is used in conjunction with a suspended platform to connect the two steel arch frames. Operators reinforce the connecting plates at the ends of the second and first steel arch frames using screws or bolts. The screws further ensure a secure connection between the two connecting plates, achieving a stable connection between the first and second steel arch frames and enhancing the overall structural strength.

[0108] Step six, dismantling work; after the two connecting plates at the ends of the first and second steel arch frames are connected, this utility model can be dismantled.

[0109] During use, when the two steel arch frames need to be retracted, they are placed on the ground using hoisting equipment. Operators first loosen the fastening screws on the first and second steel arch frames. Then, some operators hold the first steel arch frame still while others pull on the non-connecting end of the second steel arch frame, causing it to move towards the first steel arch frame to close. At this time, the connecting plate at the end of the second steel arch frame pulls the locking device outwards. Then, when the connecting plate at the end of the second steel arch frame disengages from the locking device, the limit locking seat quickly resets under the elastic action of two torsion springs. Finally, the first and second steel arch frames are securely connected together using locking tools, thus completing the rapid retraction of the two steel arch frames.

[0110] Example 2

[0111] This embodiment 2 is the same as embodiment 1, except that, as Figure 14 As shown, the fixing fastener is an L-shaped plate-like component, and a first anti-slip pad that matches it is provided on the inner surface of the L-shaped plate-like component.

[0112] The mounting base is open at one end and has an L-shaped structure. Mounting and fixing holes are provided on both the front and back sides of the L-shaped mounting base.

[0113] During use, a matching anti-slip pad is provided on the inner surface of the fixing fastener. The anti-slip pad is located at the connection point between the fixing fastener and the first steel arch frame. The protective pad is a rubber pad with several anti-slip protrusions, which are granular or annular. Therefore, during use, it can increase the friction between the fixing fastener and the first steel arch frame, making the fastening connection more stable and reliable. At the same time, it also plays a protective role, ensuring the integrity of the overall structure of the fixing fastener and the first steel arch frame, and extending the service life.

[0114] The specific usage is the same as in Example 1, and will not be repeated here.

[0115] Example 3

[0116] This embodiment 3 is the same as the other embodiments, except that, as Figure 13 and Figure 14 As shown, the movable locking component is an L-shaped plate-like structure. Locking connection holes, which are bolt holes, are provided on the front and back sides of the L-shaped plate-like structure to allow locking components to pass through.

[0117] Specifically, such as Figure 14 As shown, a second anti-slip pad that matches the inner surface of the movable locking component is provided.

[0118] In this invention, a matching anti-slip pad is provided on the inner surface of the movable locking component. The anti-slip pad is located at the connection point between the movable locking component and the first steel arch frame. The protective pad is a rubber pad with several anti-slip protrusions, which are granular or annular protrusions. Therefore, the friction between the movable locking component and the first steel arch frame is increased, making the locking connection more stable and reliable. At the same time, it also plays a protective role, ensuring the integrity of the overall structure of the movable locking component and the first steel arch frame, and extending the service life.

[0119] Example 4

[0120] This embodiment 4 is the same as the other embodiments, except that, as Figure 13 and Figure 14 As shown, the locking rod is a screw or lead screw with an external thread section;

[0121] The locking handle is disc-shaped, T-shaped, or star-shaped.

[0122] In addition, in this invention, a protective sleeve that matches the locking handle is also provided. The protective sleeve is a rubber sleeve, and several integral rubber protective protrusions are provided on the outer surface of the rubber sleeve. These rubber protective protrusions are granular or annular protrusions.

[0123] In this embodiment 4, the purpose of setting the locking handle in the shape of a disc, a T, or a multi-pointed star is to facilitate the operation of the workers by hand, so as to prevent the risk of slipping and improve the safety and efficiency of the construction. In addition, since a protective cover is provided on the hand part of the locking handle, it can protect the operator's hands from wear and tear during long-term work, thus ensuring the safety of the construction.

[0124] Example 5

[0125] This embodiment 5 is the same as the other embodiments, except that the clamping adjustment assembly includes:

[0126] The clamping rod is a screw or lead screw with an external thread section on its outer wall;

[0127] The clamping handle is connected to one end of the clamping rod;

[0128] A tightening head, connected to the other end of a tightening rod, wherein...

[0129] The clamping head is a round or square plate-shaped component, and the round or square plate-shaped component and the clamping rod are detachably connected or directly processed into an integral structure.

[0130] In this utility model, in order to ensure that there is no risk of loss of parts during use, the clamping head and clamping rod are directly processed into an integral structure.

[0131] The overall shape and structure of the tightening handle are the same as those of the locking handle.

[0132] Meanwhile, in this utility model, a protective sleeve that matches the grip handle is also provided. The protective sleeve is a rubber sleeve, and several integrated rubber protective protrusions are provided on the outer surface of the rubber sleeve. The rubber protective protrusions are granular or annular protrusions. Therefore, since a protective sleeve is provided on the grip part of the grip handle, it can protect the operator's hands from wear and tear due to long-term work and ensure construction safety.

[0133] Furthermore, in this invention, the outer surface of the locking component is provided with an injection molding layer, a rust-proof layer, a waterproof layer, and a warning layer in sequence from the inside to the outside, and the warning layer is coated with fluorescent powder.

[0134] Specifically, a wear-resistant polymer material is injection molded onto the injection-molded layer; the anti-rust layer includes an epoxy zinc-rich primer and a chlorinated rubber topcoat, as well as an epoxy micaceous iron oxide intermediate coat located between the epoxy zinc-rich primer and the chlorinated rubber topcoat; the waterproof layer is a polyurethane waterproof coating; and the warning layer is a reflective warning tape, reflective film, or reflective paint of a single color or a mixture of multiple colors.

[0135] Other uses are the same as in other embodiments, and will not be repeated here.

[0136] Meanwhile, in this utility model, all connections referred to are fixed connections, movable connections, or detachable connections. Among them, fixed connections are welded connections or directly processed into an integral structure; movable connections, detachable connections, or split structures are hinged connections, internal and external threaded connections, bayonet connections, plug-in sleeves, bolt assembly connections, or screw connections.

Claims

1. A locking assembly for the connection of foldable steel arches, comprising a locking assembly for the temporary locking of a first steel arch (7) and a second steel arch (8), characterized in that, The locking assembly comprises: A fixed seat (1), one end of the fixed seat (1) is fixedly connected with a fixed clamping piece (11); A movable clamping piece (2), the movable clamping piece (2) is oppositely arranged with the fixed clamping piece (11) and is detachably installed on the other end of the lower part of the fixed seat (1) through a locking piece (3); A tightening adjusting assembly (4), the tightening adjusting assembly (4) is rotatably connected to the upper end of the fixed seat (1), and the lower end of the tightening adjusting assembly (4) is located inside the fixed seat (1); A limiting locking clamping seat (5), the limiting locking clamping seat (5) is rotatably adjusted and connected to the working end of the upper part of the fixed seat (1) through a connecting assembly (6).

2. A locking assembly for a steel arch connection as claimed in claim 1, wherein, The fixed seat (1) and the fixed clamping piece (11) are integrally formed; A mounting seat (12) is symmetrically and outwardly arranged on the working end of the upper part of the fixed seat (1) and is used for mounting the limiting locking clamping seat (5) and the connecting assembly (6); A locking limiting hole (13) is arranged in the middle position of the other end of the lower part of the fixed seat (1) and is used for the locking piece (3) to pass through, and the locking limiting hole (13) is a bolt hole; An installation hole (14) is arranged in the middle position of the upper end of the fixed seat (1) and is used for the tightening adjusting assembly (4) to pass through, and the installation hole (14) is a bolt hole.

3. A locking assembly for foldable steel arch connection according to claim 2, wherein, A limiting baffle (15) is further arranged on the fixed seat (1) and is downwardly extended and connected to the other end of the mounting seat (12).

4. A locking assembly for foldable steel arch connection according to claim 2, wherein, The fixed clamping piece (11) is an L-shaped plate-shaped body member, and a first anti-slip pad (111) is arranged on the inner surface of the L-shaped plate-shaped body member. One end of the mounting seat (12) is arranged in an open manner, the mounting seat (12) is an L-shaped structure, and a mounting fixed hole is arranged through the front and back surfaces of the L-shaped mounting seat (12).

5. A locking assembly for foldable steel arch connection according to claim 1, wherein, The movable clamping piece (2) is an L-shaped plate-shaped body member, and a locking connecting hole (21) is arranged through the front and back surfaces of the vertical surface of the L-shaped plate-shaped body member and is used for the locking piece (3) to pass through, and the locking connecting hole (21) is a bolt hole.

6. A locking assembly for foldable steel arch connection according to claim 5, wherein, A second anti-slip pad (22) is arranged on the inner surface of the movable clamping piece (2).

7. A locking assembly for foldable steel arch connection according to claim 1, wherein, The locking piece (3) comprises: A locking rod (31), the locking rod (31) sequentially passes through the locking connecting hole (21) and the locking limiting hole (13) from the outside to the inside and is connected with the fixed seat (1) as a whole; A locking handle (32), the locking handle (32) is connected to the free end of the locking rod (31).

8. A locking assembly for foldable steel arch connection according to claim 7, wherein, The locking rod (31) is a screw rod or a lead screw with an external thread segment on the outer wall; The locking handle (32) is a disc-shaped, T-shaped or multi-angle star-shaped.

9. A locking assembly for foldable steel arch connection according to claim 1, wherein, The tightening adjusting assembly (4) comprises: A tightening rod (41), the tightening rod (41) is a screw rod or a lead screw with an external thread segment on the outer wall; A tightening handle (42), the tightening handle (42) is connected to one end of the tightening rod (41); A tightening head (43), the tightening head (43) is connected to the other end of the tightening rod (41), and The top pressing head (43) is a circular or square plate-shaped member, which is detachably connected with the top pressing rod (41) or directly processed into an integral structure.

10. A locking assembly for foldable steel arch connection according to claim 1, wherein, The limiting and locking clamping seat (5) comprises: A connecting column (51) is provided with a connecting column connecting surface at the upper end; A locking member (52) is connected at the middle of the connecting column connecting surface, and the connecting end of the locking member (52) is provided with a connecting shaft connecting hole, and the lower part of the locking member (52) is inwardly provided with an inclined clamping groove, which is an L-shaped structure as a whole; The connecting assembly (6) comprises: A connecting shaft (61) is used to rotate and connect the locking member (52) in the mounting seat (12) through the connecting shaft connecting hole; A torsional spring (62) is symmetrically sleeved at both ends of the connecting shaft (61), and one end of the torsional spring (62) is elastically connected with the connecting column connecting surface, and the other end of the torsional spring (62) is elastically connected with the corresponding end inner wall of the mounting seat (12).

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