A tunnel corrugated steel plate primary support structure

Abstract

The application belongs to the technical field of tunnel primary support, in particular to a tunnel corrugated steel plate primary support structure, which comprises a corrugated steel plate; a first fixed plate, a second fixed plate, a third fixed plate and a fourth fixed plate are fixedly connected to the four walls of the corrugated steel plate respectively; the first fixed plate and the second fixed plate are symmetrically arranged; the third fixed plate and the fourth fixed plate are symmetrically arranged; a pair of symmetrically distributed clamping columns are fixedly connected to the outer side wall of the third fixed plate; a pair of symmetrically distributed first grooves are formed in the outer side wall of the clamping column; a clamping block is fixedly connected to the groove bottom of the first groove through a spring; the clamping block is limited in the first groove through a limiting piece; a first insertion groove is formed in the position of the fourth fixed plate relative to the clamping column; the problems that a large number of corrugated steel plates need to be assembled, alignment operation and assembly by using specific tools are needed every time, a large amount of splicing time is wasted, and the bolt sliding occurs in the bolt installation process are solved.

Description

TECHNICAL FIELD

[0001] The present application belongs to the technical field of tunnel primary support, in particular to a tunnel corrugated steel plate primary support structure. BACKGROUND

[0002] The corrugated steel plate is formed by pressing the plane steel plate surface into a corrugated shape. The processed corrugated steel plate is welded or bolted into a pipe section, which not only increases the overall stiffness and bearing capacity of the pipe section, but also has the characteristics of rigidity and flexibility. Its mechanical properties are much better than those of flat plate materials under the same conditions. It has gradually been applied to highway engineering, railway engineering and underground engineering industries, and has great advantages in replacing traditional structure forms.

[0003] In the prior art, the corrugated steel plate is combined into a ring shape by high-strength bolts, and then the tunnel is primary supported. However, when the corrugated steel plate is spliced by high-strength bolts, it needs to be aligned in turn, and then a special tool is needed to install the bolt to combine the corrugated steel plates two by two. Since a large number of corrugated steel plates need to be assembled when the corrugated steel plates are combined into a ring-shaped support mechanism, alignment operation and assembly with a special tool are needed each time, which wastes a lot of splicing time. In addition, the bolt may slip during installation, which may cause unstable assembly during installation and lead to safety accidents.

[0004] Therefore, the present application provides a tunnel corrugated steel plate primary support structure. SUMMARY

[0005] In order to make up for the shortcomings of the prior art and solve at least one technical problem proposed in the background art.

[0006] The technical scheme adopted by the present application to solve its technical problems is: a tunnel corrugated steel plate initial support structure, comprising a corrugated steel plate; a first fixed plate, a second fixed plate, a third fixed plate and a fourth fixed plate are fixedly connected to the four walls of the corrugated steel plate respectively; the first fixed plate and the second fixed plate are symmetrically arranged; the third fixed plate and the fourth fixed plate are symmetrically arranged; a pair of symmetrically distributed clamping columns are fixedly connected to the outer side wall of the third fixed plate; a pair of symmetrically distributed first grooves are formed in the outer side wall of the clamping column; a clamping block is fixedly connected to the bottom of the first groove through a spring; the clamping block is limited in the first groove by a limiting piece; a first insertion slot is formed in the position of the fourth fixed plate relative to the clamping column; a pair of distributed second insertion slots are formed in the side wall of the fourth fixed plate, and the first insertion slot and the second insertion slot are the same size, and a first clamping groove is formed in the inner wall of the first insertion slot and the second insertion slot, and the first clamping groove is arranged in a ring shape; in the prior art, the corrugated steel plate is combined into a ring shape by high-strength bolts, and then the tunnel is initially supported, but when the high-strength bolts are used for splicing, they need to be aligned in turn, and then special tools are needed to install the bolts to combine the corrugated steel plates two by two, because a large number of corrugated steel plates need to be assembled when the corrugated steel plates are combined into a ring-shaped support mechanism, and the alignment operation and the assembly with special tools are needed each time, which wastes a lot of splicing time, and the bolt installation process may cause the bolt to slip, which may cause the assembly to be unstable during installation, leading to safety accidents, therefore, when the corrugated steel plates are spliced, the adjacent corrugated steel plates are combined in an interleaved manner, so the first insertion slot and the second insertion slot are provided, and when the adjacent corrugated steel plates are spliced, one clamping column is inserted into the second insertion slot of the adjacent corrugated steel plate, and then the other clamping column is inserted into the first insertion slot of the next corrugated steel plate, and then after the clamping column is clamped into the first insertion slot or the second insertion slot, the fixing state of the clamping block is released by the limiting piece, so that the clamping block is clamped into the first clamping groove under the action of the spring force, thereby fixing the adjacent corrugated steel plates, and the first insertion slot and the second insertion slot are provided, which not only facilitates the interleaved arrangement of the adjacent corrugated steel plates, but also facilitates the splicing and insertion, only the clamping column needs to be pushed into the first insertion slot or the second insertion slot, which is simple and convenient to operate, avoids the use of special tools, and also avoids safety accidents caused by bolt slipping, and the first clamping groove is arranged in a ring shape when the operation is performed, which facilitates the clamping of the clamping block into the first clamping groove, avoids the influence of the curvature of the corrugated steel plate on the clamping of the clamping block into the first clamping groove, ensures the fixing effect of the adjacent corrugated steel plates, and after the corrugated steel plates are spliced, a layer of concrete is injected between the ring-shaped corrugated steel plate support and the tunnel surface, thereby facilitating the support treatment.

[0007] Preferably, the limiting piece comprises a first cavity and a second cavity; the third fixed plate is provided with the first cavity; the side wall of the first cavity is provided with a pulling plate through a spring, the pulling plate is provided with a limiting rod, and the limiting rod extends into the first groove; the side wall of the clamping block close to the pulling plate is provided with a limiting groove; a pair of first moving plates are slidably connected in the first cavity, and the first moving plates are connected through a connecting column; the pulling plate and the first moving plates are connected through a first thin rope, and the first thin rope is guided through a guide wheel; the side wall of the first fixed plate is provided with a second groove, and the second groove is provided with a pull ring; a group of the first moving plates are arranged on the pull ring through a second thin rope, and the second thin rope is guided through the guide wheel in the first cavity; when the limiting of the clamping block needs to be released, the second thin rope is pulled through the pull ring to drive a group of the first moving plates to move, the movement of the first moving plates pulls the pulling plate through the first thin rope, the movement of the pulling plate releases the end of the limiting rod from the limiting groove, thereby releasing the fixation of the clamping block, allowing the clamping block to be clamped into the first clamping groove, and the limiting rod is arranged to prevent the corrugated steel plate from being damaged during transportation, and the clamping block is located in the first groove.

[0008] Preferably, the end of the limiting rod is arc-shaped; the side wall of the clamping block close to the first groove is provided with a first arc surface; during work, the pull ring is affected by the external environment, the fixation of the clamping block is released, and the clamping block extends out of the first groove, so the end of the limiting rod is arc-shaped, and the side wall of the clamping block close to the first groove is provided with a first arc surface, which can facilitate the pushing effect of the clamping block on the first arc surface, and facilitate the pushing of the clamping block into the first groove.

[0009] Preferably, a group of second moving plates are slidably connected in the first cavity, and the second moving plates are connected by connecting columns; one end of the second moving plates is rotatably connected to the pull ring by a connecting rod, and the other end is connected to the second moving plates by a second thin rope; a group of third grooves are formed in the side wall of the first fixed plate; a pushing block is fixed in the third groove by a spring, and fourth grooves are formed in the two side walls of the pushing block; a positioning block is fixed in the fourth groove by a spring; the fourth grooves are connected to each other by a first through groove, and the positioning block is connected to the second moving plate by a third thin rope; the third thin rope is guided to move by the guide wheels in the first through groove and the second cavity; a fifth groove is formed in the position of the third groove relative to the second fixed plate, and positioning grooves are formed in the two side walls of the fifth groove; during operation, in order to ensure the supporting force of the corrugated steel plate, a group of third grooves are formed in the first fixed plate on the ring-shaped layer of the corrugated steel plate, and after the clamping column is clamped into the first and second insertion grooves, the first and second fixed plates are mutually adhered when the ring-shaped first fixed plate and the second fixed plate are mutually adhered, the pull ring is completely loosened at this time, the pushing block enters the fifth groove, and the positioning block and the positioning groove are in the same horizontal plane at this time, the positioning block is clamped into the positioning groove under the action of the spring force, and the ring-shaped corrugated steel plate is fixed, which can avoid the situation that the adhesion surface of the ring-shaped corrugated steel plate has small supporting force, utilize the support of the pushing block to avoid the place becoming a weak force, and utilize the fixing effect of the positioning block to avoid the loosening of the mutually fixed corrugated steel plate, thereby further improving the installation efficiency.

[0010] Preferably, the end of the positioning block is a right-angled trapezoidal end, and the trapezoidal slope of the positioning block faces the opening of the third groove; during operation, when the pull ring is released, the positioning block is first pushed outward, and then the end of the positioning block and the inner wall of the third groove are mutually adhered, and in order to avoid the situation that the end of the positioning block is clamped into the adhesion interface of the first and second fixed plates when the pushing block is subjected to the spring force, the end of the positioning block is a right-angled trapezoidal end, and the trapezoidal slope can avoid the situation of being stuck, so as to ensure that the pushing block enters the fifth groove and ensure the fixed supporting effect of the pushing block.

[0011] Preferably, the positioning block is provided with a group of sixth grooves on the side wall near the bottom of the third groove; the positioning groove is provided with a group of seventh grooves on the side wall near the opening of the fifth groove; the seventh groove is rotatably connected with a rotating rod through a rotating shaft on the side wall, and one end of the rotating rod is fixedly connected to the bottom of the seventh groove through an elastic sheet; during operation, when the positioning block enters the positioning groove, the side wall of the positioning block will push the end of the rotating rod to move into the seventh groove, thereby pressing the elastic sheet and allowing the rotating rod to be in a horizontal position, facilitating the entry of the positioning block; after the positioning block is completely entered, the end of the rotating rod will be clamped into the sixth groove under the action of the elastic sheet, thereby limiting the positioning block and allowing the positioning block to be in a locked state, so that the installed corrugated steel plate is in a fixed state and is not affected by the external environment.

[0012] Preferably, the end of each of the pair of positioning blocks is respectively provided with a first magnetic block and a second magnetic block; the first magnetic block and the second magnetic block are attracted to each other; during operation, the first magnetic block and the second magnetic block on the adjacent positioning blocks are in an attractive state when the positioning blocks enter the positioning groove, which can accelerate the movement of the two positioning blocks into the positioning groove and offset the blocking force of the elastic sheet on the rotating rod.

[0013] Preferably, the seventh groove is provided with a rounded corner at the corner; the end of the rotating rod is slidingly connected to the rounded corner arc surface of the seventh groove; during operation, the corner of the seventh groove is provided with a rounded corner, and when the end of the rotating rod is clamped into the sixth groove, the other end of the rotating rod is slidingly connected to the rounded corner arc surface, the horizontal surface of the seventh groove limits the rotating rod, which can avoid the situation that the rotating rod is shaken back and forth by the external environment, and ensures the stability of the clamping position of the rotating rod.

[0014] Preferably, the cross section of the second groove is circular; a pair of first sliding grooves are arranged on the inner wall of the second groove symmetrically about the pull ring; a pair of second sliding grooves are arranged on the inner wall of the second groove symmetrically about the pull ring; the first sliding grooves and the second sliding grooves are cross-shaped, and the length of the second sliding grooves is greater than that of the first sliding grooves; the first sliding grooves and the second sliding grooves are connected to each other through an annular groove arranged on the inner wall of the second groove; a pair of symmetrically distributed sliding columns are fixed to the pull ring; during operation; when the clamping post enters the first insertion groove and the second insertion groove, the pull ring moves back and forth in the first sliding groove through the sliding columns, thereby moving the pull plate back and forth, and when the pull plate is pulled, the push block and the positioning block are pulled to move towards the square bottom of the third groove and the fourth groove, so that the situation of being stuck does not occur, and the clamping block is conveniently clamped into the first clamping groove, but the state of the push block and the positioning block is not affected, when the push block and the positioning block need to enter the fifth groove, the sliding column of the pull ring is first slid in the first sliding groove, then aligned in the annular groove, and then enters the annular groove, and then enters the second sliding groove, and then the pull ring is released, at this time, the push block and the positioning block move, and the pull ring is released, so that the movement state of the pull plate is not affected, through the arrangement of the pull ring, the corrugated steel plate can be fixed in different states, and the operation is simple and convenient.

[0015] Preferably, a group of rollers are arranged on the trapezoidal slope of the positioning block; during operation, a group of rollers are arranged on the trapezoidal slope of the positioning block, which can facilitate the movement of the positioning block, reduce the friction between the trapezoidal slope of the positioning block and the adjacent interfaces of the first fixed plate and the second fixed plate, and facilitate installation.

[0016] The beneficial effects of the present application are as follows:

[0017] 1. The tunnel corrugated steel plate primary support structure can be operated simply and conveniently by pushing the clamping post into the first insertion groove or the second insertion groove, special tools are not required, and safety accidents caused by bolt thread stripping can be avoided, the first clamping groove is annular during operation, the clamping block can be conveniently clamped into the first clamping groove, the arc degree of the corrugated steel plate does not affect the clamping of the clamping block into the first clamping groove, the fixing effect of adjacent corrugated steel plates is guaranteed, and the annular corrugated steel plate support and the tunnel surface are injected with a concrete layer after the corrugated steel plates are spliced, thereby facilitating support.

[0018] 2. The tunnel corrugated steel plate primary support structure can be operated simply and conveniently by pushing the clamping post into the first insertion groove or the second insertion groove, special tools are not required, and safety accidents caused by bolt thread stripping can be avoided, the first clamping groove is annular during operation, the clamping block can be conveniently clamped into the first clamping groove, the arc degree of the corrugated steel plate does not affect the clamping of the clamping block into the first clamping groove, the fixing effect of adjacent corrugated steel plates is guaranteed, and the annular corrugated steel plate support and the tunnel surface are injected with a concrete layer after the corrugated steel plates are spliced, thereby facilitating support. BRIEF DESCRIPTION OF DRAWINGS

[0019] The application will be further described below with reference to the accompanying drawings.

[0020] Figure 1 is a splicing forming diagram of the corrugated steel plate;

[0021] Figure 2 is a perspective view of the corrugated steel plate;

[0022] Figure 3 is a sectional view of the corrugated steel plate;

[0023] Figure 4 is Figure 3 is an enlarged view of a portion A in FIG. 1;

[0024] Figure 5 is Figure 4 is an enlarged view of a portion B in FIG. 1;

[0025] Figure 6 is Figure 3 is an enlarged view of a portion C in FIG. 1;

[0026] Figure 7 is Figure 6 is an enlarged view of a portion D in FIG. 1;

[0027] Figure 8 is Figure 4 is an enlarged view of a portion E in FIG. 1;

[0028] Figure 9 is Figure 3 is an enlarged view of a portion F in FIG. 1;

[0029] Figure 10 is Figure 9 is a sectional view of a portion G-G in FIG. 1;

[0030] Figure 11 is a planar splicing diagram of the corrugated steel plate;

[0031] Figure 12 is a partial sectional view of the positioning block;

[0032] In the figure: 1, corrugated steel plate; 11, first fixed plate; 12, second fixed plate; 13, third fixed plate; 14, fourth fixed plate; 15, first insertion slot; 16, second insertion slot; 17, first clamping groove; 18, clamping column; 19, first recess; 191, clamping block; 2, first cavity; 21, second cavity; 22, first moving plate; 23, first string; 25, pull ring; 26, second recess; 27, limiting groove; 28, pull plate; 29, limiting rod; 291, second string; 3, second moving plate; 31, third string; 32, third recess; 33, positioning block; 34, fourth recess; 35, push block; 36, fifth recess; 37, positioning groove; 4, sixth recess; 41, rotating rod; 42, seventh recess; 43, elastic sheet; 44, first magnetic block; 45, second magnetic block; 46, first sliding groove; 47, annular groove; 48, second sliding groove; 49, sliding column; 5, roller. DETAILED DESCRIPTION

[0033] In order to make the technical means, creative features, purposes and effects realized by the present application easy to understand, the present application is further described below in combination with specific embodiments.

[0034] Example one

[0035] As Figures 1 to 11The tunnel corrugated steel plate initial support structure disclosed by the embodiment of the application comprises a corrugated steel plate 1; first, second, third and fourth fixed plates 11, 12, 13 and 14 are respectively fixedly connected to the walls around the corrugated steel plate 1; the first fixed plate 11 and the second fixed plate 12 are symmetrically arranged; the third fixed plate 13 and the fourth fixed plate 14 are symmetrically arranged; a pair of symmetrically distributed clamping columns 18 are fixedly connected to the outer side wall of the third fixed plate 13; a pair of symmetrically distributed first recesses 19 are formed in the outer side wall of the clamping column 18; a clamping block 191 is fixedly connected to the bottom of the first recess 19 through a spring; the clamping block 191 is limited in the first recess 19 through a limiting piece; a first insertion slot 15 is formed in the position of the fourth fixed plate 14 relative to the clamping column 18; a pair of symmetrically distributed second insertion slots 16 are formed in the side wall of the fourth fixed plate 14, and the first insertion slot 15 and the second insertion slot 16 are of the same size; first clamping slots 17 are formed in the inner walls of the first insertion slot 15 and the second insertion slot 16, and the first clamping slots 17 are annularly arranged.In the prior art, corrugated steel plates 1 are spliced into a ring shape by high-strength bolts to initially support the tunnel, but when splicing with high-strength bolts, the bolts need to be aligned in turn and then installed with special tools to combine two corrugated steel plates 1. When the corrugated steel plates 1 are combined into a ring-shaped support mechanism, a large number of corrugated steel plates 1 need to be assembled, and each time alignment and assembly with special tools are required, which wastes a lot of splicing time, and the bolt installation process may cause the bolt to slip, which may cause unstable assembly during installation and lead to safety accidents. Therefore, when the corrugated steel plates 1 are spliced, the adjacent corrugated steel plates 1 are combined in an interleaved manner, so the first insertion slot 15 and the second insertion slot 16 are provided, and when the adjacent corrugated steel plates 1 are spliced, one side of the clamping column 18 is inserted into the second insertion slot 16 of the adjacent corrugated steel plate 1, and the other clamping column 18 is inserted into the first insertion slot 15 of the next corrugated steel plate 1. Then, after the clamping column 18 is clamped into the first insertion slot 15 or the second insertion slot 16, the limiting piece releases the fixed state of the clamping block 191, allowing the clamping block 191 to be clamped into the first clamping slot 17 under the action of the spring force, thereby fixing the adjacent corrugated steel plates 1. At the same time, the first insertion slot 15 and the second insertion slot 16 are provided, which not only facilitates the interleaved arrangement of the adjacent corrugated steel plates 1, but also facilitates splicing and insertion. Only the clamping column 18 needs to be pushed into the first insertion slot 15 or the second insertion slot 16, which is simple and convenient to operate, avoids the use of special tools, and also avoids safety accidents caused by bolt slipping. At the same time, the first clamping slot 17 is provided in a ring shape, which facilitates the clamping of the clamping block 191 into the first clamping slot 17, avoids the influence of the curvature of the corrugated steel plate 1 on the clamping of the clamping block 191 into the first clamping slot 17, ensures the fixing effect of the adjacent corrugated steel plates 1, and facilitates the support treatment after the corrugated steel plates 1 are spliced. The annular corrugated steel plate 1 support and the tunnel face are injected with a concrete layer, thereby facilitating support treatment.

[0036] The limiting piece comprises a first cavity 2 and a second cavity 21; the third fixed plate 13 is provided with the first cavity 2; the side wall of the first cavity 2 relative to the clamping column 18 is provided with a pulling plate 28 fixed by a spring, the pulling plate 28 is provided with a limiting rod 29, and the limiting rod 29 extends into the first groove 19; the clamping block 191 is provided with a limiting groove 27 on the side wall close to the pulling plate 28; the first cavity 2 is slidably connected with a pair of first moving plates 22, and the first moving plates 22 are connected by a connecting column; the pulling plate 28 and the first moving plate 22 are connected by a first thin rope 23, and the first thin rope 23 is guided by a guide wheel; the side wall of the first fixed plate 11 is provided with a second groove 26, and the second groove 26 is provided with a pull ring 25; a group of the first moving plates 22 are arranged on the pull ring 25 by a second thin rope 291, and the second thin rope 291 is guided by the guide wheel in the first cavity 2; when it is necessary to release the limiting of the clamping block 191, the second thin rope 291 is pulled by the pull ring 25 to drive a group of the first moving plates 22 to move, the first moving plates 22 move to pull the pulling plate 28 by the first thin rope 23, the pulling plate 28 moves to make the end of the limiting rod 29 separate from the limiting groove 27, thereby releasing the fixing of the clamping block 191, so that the clamping block 191 can be clamped into the first clamping groove 17, and meanwhile, the limiting rod 29 can be arranged to prevent the clamping block 191 from being damaged when the corrugated steel plate 1 is transported, and the clamping block 191 can be clamped into the first clamping groove 17.

[0037] The end of the limiting rod 29 is arc-shaped; the side wall close to the first groove 19 of the clamping block 191 is provided with a first arc surface; during work, the pull ring 25 is affected by the external environment, the fixing of the clamping block 191 is released, and the clamping block 191 extends out of the first groove 19, therefore, the end of the limiting rod 29 is arc-shaped, and the side wall close to the first groove 19 of the clamping block 191 is provided with a first arc surface, so that the clamping block 191 can be conveniently pushed into the first groove 19.

[0038] A group of second moving plates 3 are slidably connected in the first cavity 2, and a group of second moving plates 3 are connected through connecting columns; one end of a group of second moving plates 3 is rotatably connected to the pull ring 25 through a connecting rod, and the other end is connected to a group of second moving plates 3 through a second thin rope 291; a group of third grooves 32 are formed in the side wall of the first fixed plate 11; a push block 35 is fixed in the third groove 32 through a spring, and fourth grooves 34 are formed in the two side walls of the push block 35; a positioning block 33 is fixed in the fourth groove 34 through a spring; a pair of fourth grooves 34 are connected to each other through a first through groove, and the positioning block 33 is connected to the second moving plate 3 through a third thin rope 31; the third thin rope 31 moves in a guided manner through the guide wheels in the first through groove and the guide wheels in the second cavity 21; a fifth groove 36 is formed in the position of the third groove 32 relative to the second fixed plate 12, and positioning grooves 37 are formed in the two side walls of the fifth groove 36; during work, in order to ensure the supporting force of the corrugated steel plate 1, a group of third grooves 32 are formed in the first fixed plate 11 on one layer of the annular corrugated steel plate 1, after the clamping column 18 is clamped into the first insertion groove 15 and the second insertion groove 16, when the first fixed plate 11 and the second fixed plate 12 of the annular ring are mutually adhered, the pull ring 25 is completely loosened at this time, the push block 35 enters the fifth groove 36, and at the same time, the positioning block 33 and the positioning groove 37 are in the same horizontal plane, at this time, the positioning block 33 is clamped into the positioning groove 37 under the action of the spring force, thereby completing the fixation of the annular corrugated steel plate 1, avoiding the situation that the supporting force of the adhering surface of the annular corrugated steel plate 1 is small, using the support of the push block 35 to avoid this place becoming a weak force, and using the fixation effect of the positioning block 33 to avoid the loosening of the mutually fixed corrugated steel plate 1, and further improving the installation efficiency.

[0039] The end of the positioning block 33 is a right-angled trapezoidal end, and the trapezoidal slope of the positioning block 33 faces the opening of the third groove 32; during work, when the pull ring 25 is released, the positioning block 33 is first pushed outward, and then the end of the positioning block 33 and the inner wall of the third groove 32 are mutually adhered, at this time, in order to avoid the situation that the end of the positioning block 33 is clamped into the adhering interface of the first fixed plate 11 and the second fixed plate 12 when the push block 35 is subjected to the spring force, the end of the positioning block 33 is set as a right-angled trapezoidal end, and the trapezoidal slope can avoid the situation of being stuck, ensuring that the push block 35 enters the fifth groove 36 and ensuring the fixation and support effect of the push block 35.

[0040] The positioning block 33 is provided with a group of sixth grooves 4 on the side wall near the bottom of the third groove 32; the positioning groove 37 is provided with a group of seventh grooves 42 on the side wall near the opening of the fifth groove 36; the seventh groove 42 is rotationally connected with a rotating rod 41 through a rotating shaft on the side wall, and one end of the rotating rod 41 is fixedly connected with the bottom of the seventh groove 42 through an elastic sheet 43; during operation, when the positioning block 33 enters the positioning groove 37, the side wall of the positioning block 33 will push the end of the rotating rod 41 to move into the seventh groove 42, thereby extruding the elastic sheet 43, so that the rotating rod 41 is in a horizontal position, facilitating the entry of the positioning block 33; after the positioning block 33 completely enters, the end of the rotating rod 41 will be clamped into the sixth groove 4 under the action of the elastic sheet 43, thereby limiting the positioning block 33, so that the positioning block 33 is in a locked state, and the installed corrugated steel plate 1 is in a fixed state and will not be affected by the external environment.

[0041] A first magnetic block 44 and a second magnetic block 45 are respectively arranged in the end of a pair of positioning blocks 33; the first magnetic block 44 and the second magnetic block 45 attract each other; during operation, because a first magnetic block 44 and a second magnetic block 45 are respectively arranged on a pair of positioning blocks 33, when the positioning block 33 enters the positioning groove 37, the first magnetic block 44 and the second magnetic block 45 on the adjacent positioning block 33 will be in an attractive state, which can accelerate the movement of the two towards the positioning groove 37, and offset the blocking force of the elastic sheet 43 on the rotating rod 41.

[0042] The seventh groove 42 is provided with a rounded corner at the corner; the end of the rotating rod 41 is slidingly connected with the rounded corner arc surface of the seventh groove 42; during operation, the corner of the seventh groove 42 is provided with a rounded corner, and when the end of the rotating rod 41 is clamped into the sixth groove 4, because the other end of the rotating rod 41 is slidingly connected with the rounded corner arc surface, the horizontal surface of the seventh groove 42 will limit the rotating rod 41, which can avoid the situation that the rotating rod 41 is shaken back and forth by the external environment, and ensure the clamping stability of the rotating rod 41.

[0043] The second groove 26 is circular in cross section; a pair of first sliding grooves 46 are formed on the inner wall of the second groove 26 and symmetrically distributed about the pull ring 25; a pair of second sliding grooves 48 are formed on the inner wall of the second groove 26 and symmetrically distributed about the pull ring 25; the first sliding grooves 46 and the second sliding grooves 48 are cross-distributed, and the length of the second sliding grooves 48 is greater than that of the first sliding grooves 46; the first sliding grooves 46 and the second sliding grooves 48 are in communication with each other through an annular groove 47, and the annular groove 47 is arranged on the inner wall of the second groove 26; the pull ring 25 is fixedly connected with a pair of symmetrically distributed sliding columns 49; during operation; when the clamping post 18 enters the first insertion slot 15 and the second insertion slot 16, at this time, the pull ring 25 moves back and forth in the first sliding groove 46 through the sliding column 49, thereby moving the pull plate 28 back and forth, and when the pull plate 28 is pulled, at this time, the push block 35 and the positioning block 33 are pulled to move towards the square bottom of the third groove 32 and the fourth groove 34, and the situation of being stuck does not occur, and the clamping block 191 is conveniently clamped into the first clamping slot 17, but the state of the push block 35 and the positioning block 33 is not affected, when it is needed to make the push block 35 and the positioning block 33 enter the fifth groove 36, at this time, the sliding column 49 of the pull ring 25 is slid in the first sliding groove 46, then is aligned in the annular groove 47, enters the annular groove 47, and is loosened, at this time, the push block 35 and the positioning block 33 are moved, and the pull ring 25 is not fixed, and the moving state of the pull plate 28 is not affected, through the arrangement of the pull ring 25, the corrugated steel plate 1 can be fixed in different states, and the operation is simple and convenient.

[0044] Example two

[0045] As Figure 12 shown, comparative example one, wherein another embodiment of the present application is: a group of rollers 5 are arranged on the trapezoidal inclined surface of the positioning block 33; during operation, a group of rollers 5 are arranged on the trapezoidal inclined surface of the positioning block 33, which can facilitate the movement of the positioning block 33 by arranging the rollers 5, reduce the friction between the trapezoidal inclined surface of the positioning block 33 and the adjacent interfaces of the first fixed plate 11 and the second fixed plate 12, and facilitate installation.

[0046] Working principle: corrugated steel plate 1 will be spliced by high strength bolt combination into ring shape, and then the tunnel is supported initially, but when splicing with high strength bolt, it is necessary to align in turn, and then a special tool is needed to install the bolt to combine the corrugated steel plate 1 by two, because a large number of corrugated steel plates 1 are needed when combining the corrugated steel plate 1 into ring-shaped supporting mechanism, and the alignment operation and the assembly with special tool are needed every time, which wastes a lot of splicing time, and the bolt slipping occurs in the bolt installation process, which is easy to cause unstable assembly in the installation process and lead to safety accidents. Therefore, when splicing the corrugated steel plate 1, the adjacent corrugated steel plates 1 are combined in staggered combination, so the first insertion slot 15 and the second insertion slot 16 are arranged, and when splicing the adjacent corrugated steel plates 1, one side of the clamping column 18 is inserted into the second insertion slot 16 of the adjacent corrugated steel plate 1, and then the other clamping column 18 is inserted into the first insertion slot 15 of the next corrugated steel plate 1, and then after the clamping column 18 is clamped into the first insertion slot 15 or the second insertion slot 16, the fixing state of the clamping block 191 is released by the limiting piece, so that the clamping block 191 is clamped into the first clamping slot 17 under the action of the spring force, thereby fixing the adjacent corrugated steel plates 1, and the first insertion slot 15 and the second insertion slot 16 are arranged, which can facilitate the staggered arrangement of the adjacent corrugated steel plates 1 and facilitate splicing insertion, only the clamping column 18 needs to be pushed into the first insertion slot 15 or the second insertion slot 16, which is simple and convenient to operate, avoids the use of special tools, and can also avoid the safety accidents caused by bolt slipping. At the same time, the first clamping slot 17 is arranged in a ring shape during operation, which can facilitate the clamping of the clamping block 191 into the first clamping slot 17, avoid the influence of the arc degree of the corrugated steel plate 1 on the clamping of the clamping block 191 into the first clamping slot 17, and ensure the fixing effect of the adjacent corrugated steel plates 1; when the limiting of the clamping block 191 is needed to be released, the pull ring 25 moves back and forth in the first sliding groove 46 through the slide column 49, pulls the second thin rope 291 to drive a group of first moving plates 22 to move, the first moving plate 22 moves to pull the pulling plate 28 through the first thin rope 23, the pulling plate 28 moves to separate the end of the limiting rod 29 from the limiting slot 27, thereby releasing the fixing of the clamping block 191, so that the clamping block 191 can be clamped into the first clamping slot 17, and the limiting rod 29 is arranged, which can prevent the clamping block 191 from being damaged during the transportation of the corrugated steel plate 1, and after the clamping block 191 is clamped into the first clamping slot 17;The pull ring 25 will be affected by the external environment, and the fixing of the clamping block 191 will be released, and the clamping block 191 will be extended out of the first groove 19. For this, the limiting rod 29 is provided with an arc-shaped end, and the side wall of the clamping block 191 close to the first groove 19 is provided with a first arc-shaped surface. The clamping block 191 can conveniently push the first arc-shaped surface to push the clamping block 191 into the first groove 19; in order to ensure the supporting force of the corrugated steel plate 1, a group of third grooves 32 are arranged on the first fixing plate 11 on the one layer of the annular corrugated steel plate 1. After the clamping column 18 is clamped into the first insertion groove 15 and the second insertion groove 16, when the first fixing plate 11 and the second fixing plate 12 of the annular ring are mutually adhered, the slide rod 49 of the pull ring 25 is first slid in the first sliding groove 46, and then is aligned in the annular groove 47, and then is entered into the annular groove 47, and then is entered into the second sliding groove 48, the pull ring 25 is loosened, the pushing block 35 is entered into the fifth groove 36, and the positioning block 33 and the positioning groove 37 are in the same horizontal plane. At this time, the positioning block 33 will be clamped into the positioning groove 37 under the action of the spring force, thereby completing the fixing of the annular corrugated steel plate 1, avoiding the case that the supporting force of the adhering surface of the annular corrugated steel plate 1 is small, using the support of the pushing block 35 to avoid the case that this place becomes a weak force, and using the fixing effect of the positioning block 33 to avoid the case that the mutually fixed corrugated steel plate 1 is loose, and further improving the installation efficiency; when the positioning block 33 is entered into the positioning groove 37, the side wall of the positioning block 33 will push the end of the rotating rod 41 to move into the seventh groove 42, thereby extruding the elastic sheet 43, and the rotating rod 41 is in a horizontal position, facilitating the entry of the positioning block 33. After the positioning block 33 is completely entered, the end of the rotating rod 41 will be clamped into the sixth groove 4 under the action of the elastic sheet 43, thereby limiting the positioning block 33, so that the installed corrugated steel plate 1 is in a dead state and will not be affected by the external environment.

[0047] The above-mentioned front, rear, left, right, up and down are based on the drawings in the specification Figure 1 The front of the device facing the observer is defined as the front, the left side of the observer is defined as the left, and the like.

[0048] In the description of the present application, it should be understood that the terms "center", "longitudinal", "transverse", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer" and the like indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present application and simplifying the description, and therefore cannot be understood as indicating or implying that the devices or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as limiting the scope of protection of the present application.

[0049] The above shows and describes the basic principles, main features and advantages of the present application. Those skilled in the art should understand that the present application is not limited to the above-mentioned embodiments, and the above-mentioned embodiments and descriptions in the specification are only to illustrate the principles of the present application. Without departing from the spirit and scope of the present application, various changes and improvements can be made to the present application, and these changes and improvements all fall within the scope of the claimed present application. The scope of protection of the present application is defined by the appended claims and their equivalents.

Claims

1. A tunnel corrugated steel plate initial support structure, characterized in that: Includes a corrugated steel plate (1); a first fixing plate (11), a second fixing plate (12), a third fixing plate (13), and a fourth fixing plate (14) are respectively fixed to the four sides of the corrugated steel plate (1); the first fixing plate (11) and the second fixing plate (12) are symmetrically arranged; the third fixing plate (13) and the fourth fixing plate (14) are symmetrically arranged; a pair of symmetrically distributed locking posts (18) are fixed to the outer side wall of the third fixing plate (13); a pair of symmetrically distributed first grooves (19) are opened on the outer side wall of the locking posts (18); the first grooves (19) A locking block (191) is fixed to the bottom of the groove by a spring; the locking block (191) is limited in the first groove (19) by a limiting member; the fourth fixing plate (14) is provided with a first insertion groove (15) at the position of the locking post (18); a pair of distributed second insertion grooves (16) are provided on the side wall of the fourth fixing plate (14), and the first insertion groove (15) and the second insertion groove (16) are the same size. A first locking groove (17) is provided on the inner wall of the first insertion groove (15) and the second insertion groove (16), and the first locking groove (17) is arranged in a ring. The limiting component includes a first cavity (2) and a second cavity (21); the third fixing plate (13) has a first cavity (2) inside; a pull plate (28) is fixedly connected to the side wall of the first cavity (2) relative to the locking post (18) by a spring, a limiting rod (29) is fixedly connected to the pull plate (28), and the limiting rod (29) extends into the first groove (19); a limiting groove (27) is opened on the side wall of the locking block (191) near the pull plate (28); a pair of first moving plates (22) are slidably connected inside the first cavity (2). The first movable plates (22) are connected by connecting columns; the pull plate (28) and the first movable plates (22) are connected by a first thin rope (23), and the first thin rope (23) is guided by a guide wheel; a second groove (26) is provided on the side wall of the first fixed plate (11), and a pull ring (25) is provided in the second groove (26); a set of the first movable plates (22) are set on the pull ring (25) by a second thin rope (291), and the second thin rope (291) is guided by a guide wheel in the first cavity (2); The end of the limiting rod (29) is an arc-shaped end; the locking block (191) has a first arc-shaped surface on the side wall near the first groove (19).

2. The tunnel corrugated steel plate initial support structure according to claim 1, characterized in that: A set of second movable plates (3) are slidably connected inside the first cavity (2), and the set of second movable plates (3) are connected to each other by connecting columns; one end of the set of second movable plates (3) is rotatably connected to the pull ring (25) by a connecting rod, and the other end is connected to the set of second movable plates (3) by a second thin rope (291); a set of third grooves (32) are provided on the side wall of the first fixed plate (11); a push block (35) is fixed in the third groove (32) by a spring, and a fourth groove (34) is provided on the two side walls of the push block (35). The fourth groove (34) is fixed to a positioning block (33) by a spring; a pair of fourth grooves (34) are connected to each other by a first through groove, and the positioning block (33) is connected to each other by a third thin rope (31) and a second moving plate (3); the third thin rope (31) is guided to move by a guide wheel in the first through groove and a guide wheel in the second cavity (21); the second fixed plate (12) has a fifth groove (36) at a position relative to the third groove (32), and positioning grooves (37) are provided on both sides of the fifth groove (36).

3. The initial support structure for a tunnel corrugated steel plate according to claim 2, characterized in that: The end of the positioning block (33) is a right-angled trapezoidal end, and the trapezoidal inclined surface of the positioning block (33) faces the opening of the third groove (32).

4. The initial support structure for a tunnel corrugated steel plate according to claim 3, characterized in that: The positioning block (33) has a set of sixth grooves (4) on the side wall near the bottom of the third groove (32); the positioning groove (37) has a set of seventh grooves (42) on the side wall near the opening of the fifth groove (36); the seventh groove (42) has a rotating rod (41) rotatably connected to the side wall of the seventh groove (42) by a rotating shaft, and one end of the rotating rod (41) is fixed to the bottom of the seventh groove (42) by an elastic sheet (43).

5. The tunnel corrugated steel plate initial support structure according to claim 4, characterized in that: A first magnetic block (44) and a second magnetic block (45) are respectively provided in the end of the pair of positioning blocks (33); the first magnetic block (44) and the second magnetic block (45) attract each other.

6. The tunnel corrugated steel plate initial support structure according to claim 5, characterized in that: The corner of the seventh groove (42) is rounded; the end of the rotating rod (41) is slidably connected to the rounded arc surface of the seventh groove (42).

7. The initial support structure for a tunnel corrugated steel plate according to claim 6, characterized in that: The second groove (26) has a circular cross section; a pair of first grooves (46) symmetrically distributed about the pull ring (25) are provided on the inner wall of the second groove (26); a pair of second grooves (48) symmetrically distributed about the pull ring (25) are provided on the inner wall of the second groove (26); the first grooves (46) and the second grooves (48) are arranged in a cross shape, and the length of the second groove (48) is greater than that of the first groove (46); the first grooves (46) and the second grooves (48) are connected to each other through an annular groove (47), and the annular groove (47) is provided on the inner wall of the second groove (26); a pair of symmetrically distributed sliding columns (49) are fixed on the pull ring (25).

8. The tunnel corrugated steel plate initial support structure according to claim 3, characterized in that: A set of rollers (5) are provided on the trapezoidal inclined surface of the positioning block (33).

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