Folding hinge structure, folding lagging jack and multi-truss folding lagging jack

Abstract

The utility model relates to the technical field of folding lagging jacks, and provides a folding hinge structure, a folding lagging jack and a multi-truss folding lagging jack, the folding hinge structure comprises a first connecting piece and a second connecting piece, the first connecting piece is rotatably connected with the second connecting piece through a hinge shaft, and a ratchet wheel is fixed on the first connecting piece; the axis of the ratchet wheel coincides with the axis of the hinge shaft, the second connecting piece is rotationally connected with a pawl matched with the ratchet wheel, an elastic piece used for driving the pawl to reset is arranged between the pawl and the second connecting piece, through cooperation of the ratchet wheel, the pawl and the elastic piece, one-way rotation of the adjacent arch sections is achieved, and shaking of the adjacent arch sections in the folding installation process is avoided; and the stability and the safety of the structure are improved.

Description

Technical Field

[0001] The utility model relates to the technical field of folding arch frames, and in particular to a folding hinge structure, a folding arch frame and a plurality of folding arch frames. Background Art

[0002] A folding arch is a support structure that can be quickly assembled and disassembled. It is usually used to build temporary buildings or venues, and is also commonly used in tunnel construction. This arch structure can be constructed by connecting multiple arch sections and connectors of the same or different lengths to form a stable arch frame. In the prior art, the connectors are mostly hinges, and bolts are usually required to connect the ends of the arch sections to fix the hinges. Since the weight of a single arch section is large, during the closing and installation process, the unfixed arch section is prone to shaking due to the hinge itself being movable, which poses a safety hazard. Utility Model Content

[0003] The purpose of the utility model is to provide a folding hinge structure, a folding arch frame and multiple folding arch frames, which solve the above-mentioned technical problems, avoid shaking during the closing and installation of adjacent arch sections, and improve the stability and safety of the structure.

[0004] The embodiment of the utility model is realized through the following technical scheme: a folding hinge structure, including a first connecting member and a second connecting member, the first connecting member is rotatably connected to the second connecting member through a hinge shaft, a ratchet is fixed on the first connecting member, the axis of the ratchet coincides with the axis of the hinge shaft, a pawl cooperating with the ratchet is rotatably connected to the second connecting member, and an elastic member for driving the pawl to reset is provided between the pawl and the second connecting member.

[0005] Furthermore, a toggle handle for adjusting the rotation of the ratchet is provided on the ratchet.

[0006] Furthermore, the pawl is connected to the second connecting member through a connecting bolt, and the elastic member is sleeved on the connecting bolt.

[0007] Furthermore, a first fixing hole is formed on the pawl, a second fixing hole is formed on the second connecting member, the elastic member is a torsion spring, one end of the elastic member is passed through the first fixing hole, and the other end is passed through the second fixing hole.

[0008] Preferably, the first connecting member and the second connecting member each include two fastened clamping plates, each clamping plate is provided with two clamping blocks for clamping the edge of the arch segment, and a reinforcing rib is provided between the two clamping blocks on the same clamping plate.

[0009] A folding arch frame comprises a plurality of arch sections, at least two adjacent arch sections are connected by the folding hinge structure.

[0010] A multi-frame folding arch frame comprises a plurality of arch frames which are arranged at intervals, and at least one of the arch frames is the above-mentioned folding arch frame.

[0011] The utility model has at least the following advantages and beneficial effects: through the cooperation of the ratchet, the pawl and the elastic member, the one-way rotation of adjacent arch sections is achieved, the shaking of adjacent arch sections during the closing and installation process is avoided, and the stability and safety of the structure are improved. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] In order to more clearly illustrate the technical solutions of the embodiments of the utility model, the drawings required for use in the embodiments will be briefly introduced below. It should be understood that the following drawings only show certain embodiments of the utility model and therefore should not be regarded as limiting the scope. For ordinary technicians in this field, other relevant drawings can be obtained based on these drawings without paying creative work.

[0013] Figure 1 A structural schematic diagram of a folding hinge structure provided by the utility model;

[0014] Figure 2 Another structural schematic diagram of a folding hinge structure provided by the utility model;

[0015] Figure 3 A cross-sectional view of a folding hinge structure provided by the utility model;

[0016] Figure 4 A schematic diagram of the installation of a folding hinge structure provided by the utility model;

[0017] Icons: 1-arch frame, 10-arch segment, 2-first connecting piece, 21-splint, 22-clamping block, 220-slot, 23-reinforcement rib, 3-second connecting piece, 30-second fixing hole, 4-hinge shaft, 5-ratchet, 51-ratchet, 6-pawl, 60-first fixing hole, 61-toggle handle, 7-elastic piece, 8-connecting bolt. DETAILED DESCRIPTION

[0018] In order to make the purpose, technical scheme and advantages of the embodiments of the utility model clearer, the technical scheme in the embodiments of the utility model will be clearly and completely described below in conjunction with the drawings in the embodiments of the utility model. Obviously, the described embodiments are part of the embodiments of the utility model, not all of the embodiments. Generally, the components of the embodiments of the utility model described and shown in the drawings here can be arranged and designed in various different configurations.

[0019] Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the present invention to be protected, but merely represents selected embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0020] Embodiment 1

[0021] like Figure 1-4 As shown, in this embodiment, a folding hinge structure is mainly disclosed, which is suitable for connecting adjacent folding arch sections. The structure is simple and reliable. Its main structure includes a first connecting member 2 and a second connecting member 3. The first connecting member 2 and the second connecting member 3 are respectively connected to adjacent arch sections 10. The arch section 10 is usually made of I-beams. The first connecting member 2 is rotatably connected to the second connecting member 3 through a hinge shaft 4. A ratchet 5 is fixed to the first connecting member 2. The axis of the ratchet 5 coincides with the axis of the hinge shaft 4. A ratchet 6 cooperating with the ratchet 5 is rotatably connected to the second connecting member 3. A pawl 6 for driving the ratchet 5 is provided between the pawl 6 and the second connecting member 3. The elastic member 7 for resetting the claw 6. It should be noted that the first connecting member 2 and the second connecting member 3 are both installed on the inner arch side of the arch segment 10. Due to the cooperation between the ratchet 5 and the pawl 6, the adjacent arch segments 10 can only rotate unidirectionally in the direction of unfolding and docking until the ends of the adjacent arch segments 10 just touch each other, and the folding and closing direction is limited by the ratchet 5 and the pawl 6, which avoids shaking during the closing and installation process to cause injuries and improves the stability and safety of the structure. When the adjacent arch segments 10 are unfolded and docked in place, the adjacent arch segments 10 are fixed by bolts, and then the hinge structure can be removed for reuse.

[0022] Furthermore, in the specific implementation, Figure 1 , 3 As shown, the pawl 6 provided in the embodiment of the utility model is provided with a toggle handle 61 for adjusting the rotation of the pawl 6. When the hinge structure needs to be folded, the toggle handle 61 can be toggled to rotate the pawl 6 so that the pawl 6 is released from the ratchet wheel 5, thereby realizing the folding and adjustment of the hinge structure.

[0023] Furthermore, in the specific implementation, Figure 1-3As shown, the above-mentioned pawl 6 provided in the embodiment of the utility model is connected to the second connecting member 3 by a connecting bolt 8, and the elastic member 7 is sleeved on the connecting bolt 8; specifically, a first fixing hole 60 is opened on the pawl 6, and a second fixing hole 30 is opened on the second connecting member 3, and the elastic member 7 is a torsion spring, one end of the elastic member 7 is passed through the first fixing hole 60, and the other end is passed through the second fixing hole 30. The ratchet 5 rotates, driving the pawl 6 to swing, so that the elastic member 7 is first deformed by force to store power, and then restores the deformation to provide power for the pawl 6 to reset. It should be noted that the first fixing hole 60 and the second fixing hole 30 can both be horizontal through holes parallel to each other, which is convenient for the installation of the elastic member 7. In addition, the elastic member 7 can also be a spiral spring. The specific structure and arrangement of the spiral spring are well known to those skilled in the art and will not be repeated here.

[0024] Furthermore, in the specific implementation, Figure 1-3 As shown, the first connecting member 2 and the second connecting member 3 provided in the embodiment of the utility model both include two fastened clamps 21, each clamp 21 is provided with two clamping blocks 22 for clamping the edge of the arch segment 10, and a reinforcing rib 23 is provided between the two clamping blocks 22 on the same clamp 21 to play a structural reinforcement role. Specifically, the clamping blocks 22 are welded to the inner side of the clamp 21, and the two clamps 21 are fastened and connected by bolts to achieve a tight connection to the arch segment 10.

[0025] Preferably, if Figure 1 , 4 As shown, the spacing between the two clamping plates 21 of the first connecting member 2 is the same as the spacing between the two clamping plates 21 of the second connecting member 3, the first connecting member 2 and the second connecting member 3 overlap alternately, and the first connecting member 2 and the second connecting member 3 have the same structure, which is convenient for production and manufacturing; the clamping blocks 22 are each provided with a clamping groove 220, and the sum of the depths of the clamping grooves 220 on two adjacent clamping blocks 22 of all clamping arch sections 10 is the same. It should be noted that due to the alternating overlapping arrangement of the first connecting member 2 and the second connecting member 3, there will be a deviation in the opening positions of the clamping grooves 220 of the first connecting member 2 and the clamping grooves 220 of the second connecting member 3, and the deviation value is the thickness of the clamping plate 21, so that the clamping blocks 22 of the first connecting member 2 and the second connecting member 3 can clamp the arch section 10 to achieve the abutment between the bottom of the clamping groove 220 and the edge of the arch section 10, thereby ensuring the stability of the connection.

[0026] In addition, such as Figure 3 As shown, the ratchet 5 includes a plurality of ratchet teeth 51 evenly arranged along the outer circumference. The ratchet teeth 51 of different sizes cooperate with the pawl 6 to adjust the angle of each rotation of the first connecting member 2 and the second connecting member 3.

[0027] Embodiment 2

[0028] In this embodiment, a folding arch frame is disclosed, including multiple arch segments 10, at least two adjacent arch segments 10 are connected by the folding hinge structure in embodiment one, and the multiple arch segments 10 are unfolded to form a stable arch frame as a whole, thereby improving the load-bearing capacity of the entire structure, facilitating installation, and improving construction efficiency.

[0029] Embodiment 3

[0030] In this embodiment, a multi-frame folding arch frame is disclosed, including arch frames 1, which are arranged at intervals. At least one arch frame 1 is the folding arch frame in Example 2. It should be noted that connecting rods are provided between adjacent arch frames 1, and the connecting rods are connected and fixed to adjacent arch frames 1 by bolt connection or welding. The installation position of the connecting rods should avoid the above-mentioned folding hinge structure to avoid interference.

[0031] The above are only preferred embodiments of the present invention and are not intended to limit the present invention. For those skilled in the art, the present invention may be subject to various modifications and variations. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. A folding hinge structure, characterized in that: The invention comprises a first connecting member (2) and a second connecting member (3), wherein the first connecting member (2) is rotatably connected to the second connecting member (3) via a hinge shaft (4), a ratchet (5) is fixed to the first connecting member (2), the axis of the ratchet (5) coincides with the axis of the hinge shaft (4), a pawl (6) cooperating with the ratchet (5) is rotatably connected to the second connecting member (3), and an elastic member (7) for driving the pawl (6) to reset is provided between the pawl (6) and the second connecting member (3).

2. A folding hinge structure according to claim 1, characterized in that: The ratchet pawl (6) is provided with a toggle handle (61) for adjusting the rotation of the ratchet pawl (6).

3. A folding hinge structure according to claim 1, characterized in that: The ratchet pawl (6) is connected to the second connecting member (3) via a connecting bolt (8), and the elastic member (7) is sleeved on the connecting bolt (8).

4. A folding hinge structure as claimed in claim 3, characterized in that: The pawl (6) is provided with a first fixing hole (60), the second connecting member (3) is provided with a second fixing hole (30), the elastic member (7) is a torsion spring, one end of the elastic member (7) is inserted into the first fixing hole (60), and the other end of the elastic member (7) is inserted into the second fixing hole (30).

5. A folding hinge structure according to claim 1 or 4, characterized in that: The first connecting member (2) and the second connecting member (3) each comprise two fastened clamping plates (21), each of the clamping plates (21) being provided with two clamping blocks (22) for clamping the edge of the arch segment (10), and a reinforcing rib (23) being provided between the two clamping blocks (22) on the same clamping plate (21).

6. A folding arch, characterized in that: It comprises a plurality of arch segments (10), wherein at least two adjacent arch segments (10) are connected by a folding hinge structure according to any one of claims 1 to 5.

7. A multi-frame folding arch frame, comprising a plurality of arch frames (1), wherein the arch frames (1) are arranged at intervals, and characterized in that: At least one arch (1) is a folding arch as claimed in claim 6.

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