Docking device for realizing staggered folding of adjacent arch frames and arch frame splicing method

Abstract

The present invention discloses a docking device and an arch frame splicing method for realizing staggered folding of adjacent arch frames, comprising a first connecting seat and a second connecting seat, wherein the first connecting seat and the second connecting seat respectively connect two adjacent arch frames, and a mutually rotating connection relationship is formed between the first connecting seat and the second connecting seat, which enables the two adjacent arch frames to be in a folded state or a docked state. During folding and rotation, there is a gap between the first connecting seat and the second connecting seat, which enables the first connecting seat and the second connecting seat to deviate from the rotating surface to drive the adjacent arch frames to fold in staggered layers; during docking and rotation, the first connecting seat and the second connecting seat drive the two to eliminate deflection through mutual rotation cooperation to drive the adjacent arch frames to align. The two adjacent arch frames of the present invention can rotate and revolve around the rotating axis at the same time, so that the folded size of the adjacent arch frames is minimized, which is convenient for transportation; the present invention is provided with a guide correction device, which is conducive to the guide correction of the adjacent arch frames when they are unfolded, and is convenient for fast threading of bolts.

Description

Technical Field

[0001] The invention relates to the field of underground engineering, and in particular to a docking device for realizing staggered folding of adjacent arch frames and an arch frame splicing method. Background Art

[0002] During the tunnel construction process, it is necessary to erect steel arch frames in the excavated rock. The existing construction method is to transport multiple sections of arch steel into the tunnel, and manually install and splice them into a whole steel arch frame. The splicing requires connecting several bolts at the flange plate, and the entire splicing process is completed in the tunnel. The existing arch frame is heavy, and the installation of the steel arch frame mainly relies on manual construction, which is time-consuming and labor-intensive. In addition, the light in the tunnel is weak, and the bolts connecting the flange plates of the two sections of the arch frame become the most difficult, least efficient, and most time-consuming process in the erection process.

[0003] At present, the more advanced steel arch splicing technology is: the steel arch is folded outside the hole and unfolded inside the hole, such as Figure 1 The arch frame 5A, the arch frame 6A and the arch frame 7A are connected by the connecting device 8A and connected outside the hole as follows Figure 1 The folding arch frame is in the state shown and transported to the tunnel. This folding method actually occupies a large space after folding and requires a special transport vehicle for transportation. The comparative document "A folding arch frame" (patent number: 201921201478.5) discloses that "the folding arch frame includes a top arch segment, a left arch segment and a right arch segment; the upper end of the left arch segment is hinged to the left end of the top arch segment, and the upper end of the right arch segment is hinged to the right end of the top arch segment; when the folding arch frame is in the folded state, the lower ends of the left arch segment and the right arch segment are both located on the side of the top arch segment, so that the left arch segment and the right arch segment are The lower ends are both located on the sides of the top arch section, so that the lower ends of the left arch section and the right arch section are misaligned with the vertical plane where the length direction of the top arch section is located. When the folding arch frame is in a folded state, it is convenient to transport. The left arch section and the right arch section in the comparative document are respectively hinged to the top arch section with hinges, and the tail ends of the left arch section and the right arch section are folded to the left and right sides of the top arch section through slight vibration on the hinge axis. However, this scheme is more idealistic. In actual production, it is not possible to cause such a large vertical misalignment of the tail ends of the left arch section and the right arch section only through slight vibration on the hinge axis. The hinges in the comparative document are fixedly connected to the left arch section, the right arch section and the top arch section, and the hinges cannot be disassembled. After the steel arch frame is installed, the hinges will no longer play any role. A tunnel usually requires the erection of thousands of steel arch frames, and each steel arch frame contains multiple hinges. Therefore, the erection cost is greatly increased, resulting in huge waste. When the left arch section, the right arch section and the top arch section in the comparison document are unfolded and connected, there is a certain gap in the hinge articulation method, which causes the center lines of the bolt holes at the connection of the left arch section, the right arch section and the top arch section to be misaligned, making it difficult to thread the bolts in one go, greatly increasing the labor intensity of the workers. Summary of the invention

[0004] The technical problem to be solved by the present invention is to overcome the deficiencies of the prior art and provide a docking device and an arch frame splicing method for realizing staggered folding of adjacent arch frames.

[0005] In order to solve the above technical problems, the present invention adopts the following technical solutions: a docking device for realizing staggered folding of adjacent arch frames, comprising a first connecting seat and a second connecting seat, wherein the first connecting seat and the second connecting seat are respectively connected to two adjacent sections of the arch frame, and a mutual rotation connection relationship is formed between the first connecting seat and the second connecting seat, which can make the two adjacent sections of the arch frame be in a folded state or a docked state. During folding and rotation, there is a gap between the first connecting seat and the second connecting seat that can cause the first connecting seat and the second connecting seat to deviate from the rotating surface to drive the adjacent arch frames to fold in staggered layers; during docking and rotation, the first connecting seat and the second connecting seat drive the two to eliminate deflection through mutual rotation cooperation to drive the adjacent arch frames to align.

[0006] As a further improvement of the above technical solution:

[0007] The gap includes a first gap formed at the rotational connection between the first connecting seat and the second connecting seat in a direction perpendicular to the rotational plane so that the two can deflect in that direction, and a second gap formed at the rotational connection between the first connecting seat and the second connecting seat in a radial direction of the rotational plane to facilitate the deflection of the two.

[0008] The first connecting seat includes a first connecting plate and a first ear plate arranged on the first connecting plate, the second connecting seat includes a second connecting plate and a second ear plate arranged on the second connecting plate, the first connecting plate and the second connecting plate are respectively connected to two adjacent arch frames, the first ear plate and the second ear plate are movably hinged through a hinge column, there is the first gap between the first ear plate and the second ear plate, and there is the second gap between the first ear plate and the hinge column.

[0009] Both side surfaces of the first ear plate are composed of a first inclined surface and a first flat surface, the first inclined surface is close to the first connecting plate, and the spacing between the first flat surfaces on both sides is not less than the maximum spacing between the first inclined surfaces on both sides; the inner side surface of the second ear plate is composed of a second inclined surface and a second flat surface, the second inclined surface is close to the second connecting plate, the spacing between the two second flat surfaces is not greater than the minimum spacing between the two second inclined surfaces, and the spacing between the two second flat surfaces is equal to the spacing between the first flat surfaces on both sides.

[0010] An auxiliary mechanism is arranged in the second gap to facilitate the deflection of the first connecting seat and the second connecting seat and prevent the two from being displaced in the radial direction of the hinge column.

[0011] The auxiliary mechanism comprises a universal ball head shell, the universal ball head shell is sleeved on the hinge column, and the first ear plate and the universal ball head shell form a spherical hinge.

[0012] The auxiliary mechanism is a universal ball joint bearing, which includes an inner sleeve and an outer sleeve. The inner sleeve is fixed on the hinge column, the outer sleeve and the inner sleeve form a spherical hinge, and the outer sleeve is fixedly connected to the first ear plate.

[0013] The first connecting seat and the second connecting seat are provided with a guide correction member for driving the first connecting seat and the second connecting seat to align accurately during the docking process so as to realize automatic correction of two adjacent arch frames.

[0014] The guide correction part includes a guide correction platform and a guide correction hole. The guide correction platform is arranged on the first connecting seat, and the guide correction hole is arranged on the second connecting seat. During the docking process between the first connecting seat and the second connecting seat, the guide correction platform and the guide correction hole cooperate with each other to drive the first connecting seat and the second connecting seat to be precisely aligned and drive the two adjacent arch frames to be automatically corrected.

[0015] The guide correction platform is configured as a wedge-shaped platform, and the guide correction hole is configured as a wedge-shaped hole matching the wedge-shaped platform.

[0016] The first connecting seat forms a fixed connection or a detachable connection with the corresponding arch frame, and the second connecting seat forms a fixed connection or a detachable connection with the corresponding arch frame.

[0017] The present invention also discloses an arch frame splicing method, which is performed using the above-mentioned docking device for realizing staggered folding of adjacent arch frames, and specifically comprises the following steps:

[0018] S1: outside the tunnel, a docking device is installed at the front and rear ends of two adjacent arch frames, and multiple arch frames are hinged through the docking device, so that the multiple arch frames are connected into a folded steel arch frame;

[0019] S2: transporting the folded steel arch frame in step S1 to a predetermined location;

[0020] S3: Use the telescopic boom vehicle to lift the top of the steel arch frame, and use the auxiliary arm to unfold the steel arch frames on the left and right sides;

[0021] S4: Bolts are used to fix the head and tail ends of two adjacent arch frames;

[0022] S5: Complete the arch.

[0023] As a further improvement of the above technical solution:

[0024] The step S1 also includes a step of pre-aligning the head and tail ends of two adjacent arch frames outside the tunnel.

[0025] The step S4 also includes removing and recycling the detachable docking device for reuse.

[0026] Compared with the prior art, the advantages of the present invention are:

[0027] 1. The two adjacent arch frames of the present invention can rotate and revolve around the rotation axis at the same time, so that the two adjacent arch frames are staggered and folded, so that the folded size is minimized and it is easy to transport.

[0028] 2. The present invention is provided with two guiding correction devices, which are beneficial to the guiding correction of two adjacent arch frames when they are extended, so that the bolt holes on the arch frames can be positioned efficiently and accurately, which is convenient for fast threading of bolts.

[0029] 3. The docking device of the present invention can be detachably connected to two adjacent arch frames, which is convenient for disassembly and reuse, thus greatly saving costs. BRIEF DESCRIPTION OF THE DRAWINGS

[0030] Figure 1 It is a schematic diagram of arch folding in the prior art;

[0031] Figure 2 It is a schematic diagram of folding a multi-section arch frame of the present invention;

[0032] Figure 3 It is a schematic diagram of folding adjacent arch frames of the present invention;

[0033] Figure 4 is a schematic diagram of a guide correction member according to Embodiment 1 of the present invention;

[0034] Figure 5 is a schematic diagram of a second gap in Embodiment 1 of the present invention;

[0035] Figure 6 is a schematic diagram of an auxiliary mechanism of Embodiment 2 of the present invention;

[0036] Figure 7 It is a schematic diagram of the auxiliary mechanism of Example 3 of the present invention.

[0037] Figure 8 is a schematic diagram of a guide correction member according to Embodiment 4 of the present invention;

[0038] Fig. 9 is a flow chart of Embodiment 1 of the splicing method of the present invention;

[0039] Fig.10 It is a flow chart of Example 2 of the splicing method of the present invention.

[0040] The numbers in the figure represent: 1. first connecting seat; 11. first connecting plate; 12. first ear plate; 121. first inclined surface; 122. first flat surface; 2. second connecting seat; 21. second connecting plate; 22. second ear plate; 221. second inclined surface; 222. second flat surface; 3. arch; 4. gap; 41. first gap; 42. second gap; 5. hinged column; 6. auxiliary mechanism; 61. universal ball head shell; 62. inner sleeve; 63. outer sleeve; 7. guide correction part; 71. guide correction table; 72. guide correction hole. DETAILED DESCRIPTION

[0041] The present invention will be further described in detail below in conjunction with the accompanying drawings and specific embodiments. For the sake of convenience, the transverse direction is defined as the direction in which the central axis of the hinge column 5 points, and the longitudinal direction of the flange is defined as the direction in which the central axis of the hinge column 5 points. Figure 3 The Y-line direction shown is parallel to the flange connection surface of the arch frame and perpendicular to the central axis of the hinged column 5.

[0042] Docking device embodiment 1:

[0043] like Figures 2 to 5 As shown, a docking device for realizing staggered folding of adjacent arches in this embodiment comprises a first connecting seat 1 and a second connecting seat 2, wherein the first connecting seat 1 and the second connecting seat 2 are respectively connected to two adjacent arches 3, and a mutually rotating connection relationship is formed between the first connecting seat 1 and the second connecting seat 2, which enables the two adjacent arches 3 to be in a folded state or a docked state. During folding and rotation, a gap 4 exists between the first connecting seat 1 and the second connecting seat 2, which enables the first connecting seat 1 and the second connecting seat 2 to deviate from the rotating surface to drive the adjacent arches 3 to fold in staggered layers; during docking and rotation, the first connecting seat 1 and the second connecting seat 2 drive the two to eliminate deflection through mutual rotation cooperation to drive the adjacent arches 3 to align. Figure 1 As shown, the existing arch frame folding can only fold the two lower arch frames to the inner side of the upper arch frame section. This folding method actually occupies a large space after folding and requires a special transport vehicle for transportation. Figure 2-5As shown, when the present invention is folded and rotated, there is a gap 4 between the first connecting seat 1 and the second connecting seat 2, which can make it deviate from the rotating plane to drive the adjacent arch frames to fold in staggered layers. The two adjacent arch frame sections can rotate relative to each other, and one of the arch frames is folded to the inner side of the other arch frame section. At this time, one of the arch frames revolves around their hinge axis away from the original rotation plane, and the angle between the hinge ends of the first connecting seat 1 and the second connecting seat 2 will also change. The setting of the gap 4 provides conditions for the angle change, so that the two arch frames are folded in staggered layers at one end away from the hinge axis. At this time, the folded size of the arch frame is the smallest (the staggered folding of two adjacent arch frames is equivalent to a torsionally deformable iron wire. The iron wire is folded and twisted at the folding point so that the two ends are staggered and folded together, while in the comparative document "A folding arch frame", two adjacent arch frames cannot revolve around the hinge point). The present invention solves the transportation difficulties in the prior art, and the setting of the gap 4 facilitates the rapid unfolding of the arch frame. The most difficult, least efficient and most time-consuming process in erecting a frame in a tunnel is to connect several bolts at the flange plates of two arch frames. When the existing arch frames are unfolded and connected, there is no device to align the two adjacent arch frames, and manual alignment is required, which greatly increases the labor intensity of the workers. When the first connecting seat 1 and the second connecting seat 2 are connected and rotated, the first connecting seat 1 and the second connecting seat 2 are driven to eliminate deflection through mutual rotation cooperation to drive the adjacent arch frames to align, which solves the problem of the centers of the bolt holes on the two adjacent flanges not being aligned and greatly reduces the labor intensity of the workers.

[0044] In this embodiment, the gap 4 includes a first gap 41 formed at the rotational connection of the first connection seat 1 and the second connection seat 2 in the direction perpendicular to the rotation plane so that the two can deflect in the direction, and a second gap 42 provided at the rotational connection of the first connection seat 1 and the second connection seat 2 in the radial direction of the rotation plane so that the two can deflect. When two adjacent arches rotate relative to each other and need to be staggered and folded, the first connection seat 1 and the second connection seat 2 rotate away from the original rotation plane with the hinge axis, and the angle between the hinge ends of the first connection seat 1 and the second connection seat 2 will also change. At this time, the hinge center axes of the first connection seat 1 and the second connection seat 2 are not in the same straight line. The setting of the first gap 41 and the second gap 42 allows the angle between the hinge ends of the first connection seat 1 and the second connection seat 2 to change and the hinge center axes to be not in the same straight line, so that the two adjacent arches can rotate around the hinge axis and be staggered and folded.

[0045] In this embodiment, the first connecting seat 1 includes a first connecting plate 11 and a first ear plate 12 arranged on the first connecting plate 11, the second connecting seat 2 includes a second connecting plate 21 and a second ear plate 22 arranged on the second connecting plate 21, the first connecting plate 11 and the second connecting plate 21 are respectively connected to two adjacent arch frames 3, the first ear plate 12 and the second ear plate 22 are hinged through the hinge column 5 to form a movable hinge, a first gap 41 is provided between the first ear plate 12 and the second ear plate 22, and a second gap 42 is provided between the first ear plate 12 and the hinge column 5. The first ear plate 12 and the second ear plate 22 rotate around the hinge column 5. When two adjacent arch frames rotate relative to each other and need to be staggered and folded, the first ear plate 12 and the second ear plate 22 rotate with the hinge column 5 away from the original rotation plane, and the angle between the hinge ends of the first ear plate 12 and the second ear plate 22 will also change. At this time, the hinge end of the first ear plate 12 will slowly approach the second ear plate 22. The first gap 41 is set to allow the angle between the hinge ends of the first ear plate 12 and the second ear plate 22 to change. The hinge center axes of the first ear plate 12 and the second ear plate 22 are not in the same straight line. The setting of the second gap 42 allows the hinge center axes of the first ear plate 12 and the second ear plate 22 to be not in the same straight line.

[0046] In this embodiment, both sides of the first ear plate 12 are composed of a first inclined surface 121 and a first flat surface 122, the first inclined surface 121 is close to the first connecting plate 11, and the distance between the first flat surfaces 122 on both sides is not less than the maximum distance between the first inclined surfaces 121 on both sides; the inner side of the second ear plate 22 is composed of a second inclined surface 221 and a second flat surface 222, the second inclined surface 221 is close to the second connecting plate 21, the distance between the two second flat surfaces 222 is not greater than the minimum distance between the two second inclined surfaces 221, and the distance between the two second flat surfaces 222 is equal to the distance between the first flat surfaces 122 on both sides. Figure 4 and 5As shown, the first ear plate 12 is provided with an inclined surface of a spatial angle, the inner side surface of the second ear plate 22 is provided with an inclined surface of a spatial angle, the distance between the first straight surfaces 122 of the first ear plate 12 is A, the distance between the second straight surfaces 222 of the second ear plate 22 is B, A=B, the spacing between the two second straight surfaces 222 is not greater than the minimum spacing between the two second inclined surfaces 221, that is, the spacing between the two second straight surfaces 222 can be equal to or less than the minimum spacing between the two second inclined surfaces 221, when the spacing between the two second straight surfaces 222 is equal to the minimum spacing between the two second inclined surfaces 221, When the minimum spacing between the inclined surfaces 221 is reached, there is a gap between the first ear plate 12 and the second ear plate 22, otherwise, the two adjacent arches cannot be staggered and folded. The spacing between the first flat surfaces 122 on both sides is not less than the maximum spacing between the first inclined surfaces 121 on both sides, indicating that the spacing between the first flat surfaces 122 can be equal to or greater than the maximum spacing between the first inclined surfaces 121. When the spacing between the first flat surfaces 122 is equal to the maximum spacing between the first inclined surfaces 121, there is a gap between the first ear plate 12 and the second ear plate 22, otherwise, the two adjacent arches cannot be staggered and folded. When the two adjacent arches are unfolded and fitted, the first flat surface 122 of the first ear plate 12 rotates to contact the second flat surface 222 of the second ear plate 22. Since A=B, the second ear plate 22 and the first ear plate 12 form a guide correction along the axial direction of the hinge column 5, so that the two adjacent arches are aligned along the axial direction of the hinge column 5, that is, the deflection effect caused by the first gap 41 is eliminated, so that the two adjacent arches can be quickly connected by bolts.

[0047] In this embodiment, the first connecting seat 1 and the second connecting seat 2 are provided with a guide correction member 7 for driving the first connecting seat 1 and the second connecting seat 2 to accurately align during the docking process to achieve automatic correction of two adjacent arch frames 3. In some cases, in order to save processing costs, the first connecting seat 1 and the second connecting seat 2 will not be fine-machined, that is, there will be a processing error between the two, the plane positioning may not be accurate, and it is not possible to accurately ensure that the bolt holes on the two adjacent arch frames are coaxial. At this time, the guide correction member 7 is set to perform a second guide correction on the two adjacent arch frames. When the first connecting seat 1 and the second connecting seat 2 are rotated to a certain angle, the guide correction member 7 performs the guide correction.

[0048] In this embodiment, the guide correction member 7 includes a guide correction platform 71 and a guide correction hole 72. The guide correction platform 71 is arranged on the first connecting seat 1, and the guide correction hole 72 is arranged on the second connecting seat 2. During the docking process between the first connecting seat 1 and the second connecting seat 2, the guide correction platform 71 and the guide correction hole 72 cooperate with each other to drive the first connecting seat 1 and the second connecting seat 2 to accurately align and drive the two adjacent arch frames 3 to automatically correct. When the first connecting seat 1 and the second connecting seat 2 rotate to a certain angle, the guide correction platform 71 contacts the guide correction hole 72, and the dimension of the guide correction platform 71 along the axial direction of the hinge column 5 is equal to the inner diameter of the guide correction hole 72 along the axial direction of the hinge column 5, so that the guide correction platform 71 cooperates with the guide correction hole 72 to guide and correct the two adjacent arch frames along the axial direction of the hinge column 5.

[0049] In this embodiment, the guide correction platform 71 is set as a rectangular platform, and the guide correction hole 72 is set as a rectangular hole that matches the rectangular platform. The dimension of the guide correction platform 71 along the axial direction of the hinge column 5 is equal to the inner diameter of the guide correction hole 72 along the axial direction of the hinge column 5, and the dimension of the guide correction platform 71 perpendicular to the axial direction of the hinge column 5 is smaller than the inner diameter of the guide correction hole 72 in this direction, so that the guide correction platform 71 can be smoothly inserted into the guide correction hole 72 and guide and correct the two adjacent arches along the axial direction of the hinge column 5.

[0050] In this embodiment, the first connection seat 1 is detachably connected to the corresponding arch frame 3, and the second connection seat 2 is detachably connected to the corresponding arch frame 3. Compared with the existing hinge-type articulated device fixedly connected to the two sections of the arch frame 3, the docking device of the present invention adopts a detachable connection. After the adjacent arch frames are docked and fixed, the docking device of the present invention can be reused, which greatly reduces the use cost.

[0051] Docking device embodiment 2:

[0052] like Figure 6 As shown, a second embodiment of the docking device for realizing staggered folding of adjacent arch frames of the present invention is basically the same as the docking device of Example 1, with the only difference being that an auxiliary mechanism 6 is provided in the second gap 42 to facilitate the deflection of the first connecting seat 1 and the second connecting seat 2 and prevent the two from being displaced in the radial direction of the hinge column 5. The auxiliary mechanism 6, combined with the special side settings of the first ear plate 12 and the second ear plate 22 and / or the guide correction member 7, can eliminate the deflection effect caused by the first gap 41 and the second gap 42, so as to accurately ensure that the docking bolt holes are coaxial when two adjacent arch frames are docked.

[0053] In this embodiment, the auxiliary mechanism 6 includes a universal ball head shell 61, which is fixedly mounted on the hinge column 5, and the first ear plate 12 is spherically hinged with the universal ball head shell 61. The second gap 42 in the embodiment 1 is changed into a universal ball head shell 61, which is fixedly connected to the hinge column 5, and the first ear plate 12 is spherically hinged with the universal ball head shell 61, so that the first ear plate 12 can rotate around the universal ball head shell 61 in a certain space.

[0054] In some embodiments, especially when the second gap 42 affects the final perforation docking of the docking bolts, the auxiliary mechanism 6 can be a boss-hole structure similar to the guide correction member 7, except that its guide correction direction is changed from the axial direction of the hinge column 5, i.e., the lateral direction, to the longitudinal direction of the flange.

[0055] Docking device embodiment 3:

[0056] like Figure 7 As shown, a third embodiment of the docking device for realizing staggered folding of adjacent arch frames of the present invention is basically the same as the docking device of Example 1, with the only difference being that an auxiliary mechanism 6 is provided in the second gap 42 to facilitate the deflection of the first connecting seat 1 and the second connecting seat 2 and prevent the two from being displaced in the radial direction of the hinge column 5. The auxiliary mechanism 6, combined with the special side settings of the first ear plate 12 and the second ear plate 22 and / or the guide correction member 7, can eliminate the deflection effect caused by the first gap 41 and the second gap 42, so as to accurately ensure that the docking bolt holes are coaxial when two adjacent arch frames are docked.

[0057] In this embodiment, the auxiliary mechanism 6 is a universal ball joint bearing, which includes an inner sleeve 62 and an outer sleeve 63. The inner sleeve 62 is fixed on the hinge column 5, and the outer sleeve 63 forms a spherical hinge with the inner sleeve 62. The outer sleeve 63 is fixedly connected to the first ear plate 12. The second gap 42 in the embodiment 1 is changed into an inner sleeve 62 and an outer sleeve 63. The outer sleeve 63 is fixedly connected to the first ear plate 12. When the first ear plate 12 revolves, it revolves with the outer sleeve 63. The outer sleeve 63 forms a spherical hinge with the inner sleeve 62. Therefore, the first ear plate 12 fixedly connected with the outer sleeve 63 can revolve around the inner sleeve 62 in a certain space.

[0058] Docking device embodiment 4:

[0059] like Figure 8As shown, the fourth embodiment of the docking device for realizing the staggered folding of adjacent arch frames of the present invention is basically the same as the docking device of Example 1, and the only difference is that the guide correction platform 71 is set as a wedge-shaped platform, and the guide correction hole 72 is set as a wedge-shaped hole that matches the wedge-shaped platform. The guide correction platform 71 is set as a wedge-shaped platform, and the guide correction hole 72 is set as a wedge-shaped hole that matches the wedge-shaped platform. The cooperation between the wedge-shaped platform and the wedge-shaped hole is conducive to the guide correction platform 71 quickly entering the guide correction hole 72.

[0060] Docking device embodiment 5:

[0061] The fifth embodiment of the docking device for realizing staggered folding of adjacent arches of the present invention is basically the same as the docking device of Example 1, with the only difference being that the first connecting seat 1 forms a fixed connection with the corresponding arch 3, and the second connecting seat 2 forms a fixed connection with the corresponding arch 3.

[0062] Splicing method embodiment 1:

[0063] like Fig. 9 As shown, the arch frame splicing method of this embodiment is performed using the docking device in the above 1-4 embodiments, and specifically includes the following steps:

[0064] S1: outside the tunnel, a docking device is installed at the front and rear ends of two adjacent arch frames 3, and multiple arch frames 3 are hinged by the docking device, so that the multiple arch frames 3 are connected into a folded steel arch frame;

[0065] S2: transporting the folded steel arch frame in step S1 to a predetermined location;

[0066] S3: Use the telescopic boom vehicle to lift the top of the steel arch frame, and use the auxiliary arm to unfold the steel arch frames on the left and right sides;

[0067] S4: Install bolts to fix the head and tail ends of two adjacent arch frames 3;

[0068] S5: Complete the arch.

[0069] In this embodiment, before step S1, a step of pre-aligning the head and tail ends of two adjacent arch frames 3 outside the tunnel is also included, and the docking device of the present invention is installed after the alignment.

[0070] In this embodiment, step S4 also includes removing and recycling the detachable docking device for reuse.

[0071] Splicing method embodiment 2:

[0072] like Fig.10As shown, the second embodiment of the arch frame splicing method of the present invention is performed using the docking device embodiment 5 of embodiment 5, which is basically the same as the method of splicing method example 1, with the only difference being that: in step S1, the docking device is fixedly installed at the head and tail ends of two adjacent arch frames 3 outside the tunnel, and the multiple arch frames 3 are hinged by the docking device, so that the multiple arch frames 3 are connected into a folded steel arch frame; the disassembly work of the docking device in step S4 is omitted.

[0073] Although the present invention has been disclosed as above with preferred embodiments, it is not intended to limit the present invention. Any technician familiar with the art can make many possible changes and modifications to the technical solution of the present invention by using the technical content disclosed above without departing from the scope of the technical solution of the present invention, or modify it into an equivalent embodiment of equivalent changes. Therefore, any simple modification, equivalent change and modification made to the above embodiments according to the technical essence of the present invention without departing from the content of the technical solution of the present invention should fall within the scope of protection of the technical solution of the present invention.

Claims

1. A docking device for realizing staggered folding of adjacent arch frames, Features: The invention comprises a first connecting seat (1) and a second connecting seat (2), wherein the first connecting seat (1) and the second connecting seat (2) are respectively connected to two adjacent arch frames (3), and a mutually rotating connection relationship is formed between the first connecting seat (1) and the second connecting seat (2) so that the two adjacent arch frames (3) are in a folded state or a docked state. When folding and rotating, there is a gap (4) between the first connecting seat (1) and the second connecting seat (2) so that the first connecting seat (1) and the second connecting seat (2) can deviate from the rotating surface to drive the adjacent arch frames (3) to fold in different layers. When docking and rotating, the first connecting seat (1) and the second connecting seat (2) are driven to eliminate the deflection through mutual rotation cooperation to drive the two to The first connecting seat (1) and the second connecting seat (2) are provided with a guide correction member (7) for driving the first connecting seat (1) and the second connecting seat (2) to accurately align the two adjacent arches (3) during the docking process, so as to realize automatic correction of the two adjacent arches (3); the guide correction member (7) comprises a guide correction platform (71) and a guide correction hole (72); the guide correction platform (71) is arranged on the first connecting seat (1), and the guide correction hole (72) is arranged on the second connecting seat (2); during the docking process of the first connecting seat (1) and the second connecting seat (2), the guide correction platform (71) and the guide correction hole (72) 2) cooperate with each other to drive the first connecting seat (1) and the second connecting seat (2) to accurately align and drive the two adjacent arch frames (3) to automatically align, the guide correction platform (71) is set as a rectangular platform, and the guide correction hole (72) is set as a rectangular hole that matches the rectangular platform; the first connecting seat (1) includes a first connecting plate (11) and a first ear plate (12) arranged on the first connecting plate (11), the second connecting seat (2) includes a second connecting plate (21) and a second ear plate (22) arranged on the second connecting plate (21), and both side surfaces of the first ear plate (12) are composed of a first inclined surface (121) and a first flat surface (122). The first ear plate (22) is composed of a second inclined surface (221) and a second flat surface (222), the first inclined surface (121) is close to the first connecting plate (11), and the spacing between the first flat surfaces (122) on both sides is not less than the maximum spacing between the first inclined surfaces (121) on both sides; the inner side surface of the second ear plate (22) is composed of a second inclined surface (221) and a second flat surface (222), the second inclined surface (221) is close to the second connecting plate (21), the spacing between the two second flat surfaces (222) is not greater than the minimum spacing between the two second inclined surfaces (221), and the spacing between the two second flat surfaces (222) is equal to the spacing between the first flat surfaces (122) on both sides.

2. The docking device for realizing staggered folding of adjacent arches according to claim 1, Features: The gap (4) comprises a first gap (41) formed at the rotational connection of the first connection seat (1) and the second connection seat (2) in a direction perpendicular to the rotational plane so that the two can deflect in that direction, and a second gap (42) formed at the rotational connection of the first connection seat (1) and the second connection seat (2) in a radial direction of the rotational plane so that the two can deflect.

3. The docking device for realizing staggered folding of adjacent arch frames according to claim 2, Features: The first connecting plate (11) and the second connecting plate (21) respectively connect two adjacent arch frames (3); the first ear plate (12) and the second ear plate (22) are movably hinged via a hinge column (5); the first gap (41) is provided between the first ear plate (12) and the second ear plate (22); and the second gap (42) is provided between the first ear plate (12) and the hinge column (5).

4. The docking device for realizing staggered folding of adjacent arches according to claim 3, Features: An auxiliary mechanism (6) is provided in the second gap (42) to facilitate the deflection of the first connecting seat (1) and the second connecting seat (2) and to prevent the two from being displaced in the radial direction of the hinge column (5).

5. The docking device for realizing staggered folding of adjacent arches according to claim 4, Features: The auxiliary mechanism (6) comprises a universal ball head shell (61), the universal ball head shell (61) is sleeved on the hinge column (5), and the first ear plate (12) and the universal ball head shell (61) form a spherical hinge.

6. The docking device for realizing staggered folding of adjacent arches according to claim 4, Features: The auxiliary mechanism (6) is a universal ball joint bearing, the universal ball joint bearing comprising an inner sleeve (62) and an outer sleeve (63), the inner sleeve (62) being sleeved on the hinge column (5), the outer sleeve (63) and the inner sleeve (62) forming a spherical hinge, and the outer sleeve (63) being fixedly connected to the first ear plate (12).

7. The docking device for realizing staggered folding of adjacent arches according to any one of claims 1 to 6, Features: The first connection seat (1) forms a fixed connection or a detachable connection with the corresponding arch frame (3), and the second connection seat (2) forms a fixed connection or a detachable connection with the corresponding arch frame (3).

8. A method for splicing an arch frame, It is characterized in that The method is carried out using the docking device for realizing staggered folding of adjacent arch frames according to any one of claims 1 to 7, which specifically comprises the following steps: S1: outside the tunnel, a docking device is installed at the front and rear ends of two adjacent arch frames (3), and multiple arch frames (3) are hingedly connected through the docking device, so that the multiple arch frames (3) are connected to form a folded steel arch frame; S2: transporting the folded steel arch frame in step S1 to a predetermined location; S3: Use the telescopic boom vehicle to lift the top of the steel arch frame, and use the auxiliary arm to unfold the steel arch frames on the left and right sides; S4: Install bolts to fix the front and rear ends of two adjacent arch frames (3); S5: Complete the arch.

9. The arch splicing method according to claim 8, Features: Before step S1, the step of pre-aligning the head and tail ends of two adjacent arch frames (3) outside the tunnel is also included.

10. The arch splicing method according to claim 8, Features: The step S4 also includes removing and recycling the detachable docking device for reuse.

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