CN109356611B - A kind of positioning equipment for annular ribs for tunnel construction - Google Patents

Abstract

The invention provides a positioning device for a circumferential rib for tunnel construction, which comprises a ground surface, two tunnel bodies, two circumferential rib bodies and two fixture bodies, wherein the tops of the circumferential rib bodies are in contact with the top wall inside the tunnel bodies, the bottoms of the two fixture bodies are respectively fixedly connected with the two ends of the bottom of the circumferential rib body, fixing grooves are formed in the two side walls inside the tunnel bodies, threaded grooves are formed in the bottoms of the fixing grooves, and positioning screw pieces are connected with the inner threads of the threaded grooves through threads. This positioning equipment of hoop muscle for tunnel construction, through setting up fixed slot, thread groove, set screw spare, dead lever, fixed orifices and latch segment, the use tools rotates the latch segment, also can manually rotate the latch segment for set screw spare threaded connection is in the inside of thread groove, thereby makes dead lever and fixture body obtain fixing, has reached the effect of the fixed fixture body of being convenient for.

Description

A kind of positioning equipment for annular ribs for tunnel construction

technical field

The invention relates to the technical field of circumferential rib positioning equipment, in particular to a circumferential rib positioning device for tunnel construction.

Background technique

Tunnels are buildings built underground or underwater or in mountains, where railways or roads are laid for motor vehicles to pass. According to its location, it can be divided into three categories: mountain tunnels, underwater tunnels and urban tunnels. In order to shorten the distance and avoid large slopes, it is called a mountain tunnel to pass under a mountain or hill; to pass under a river or a strait, it is called an underwater tunnel; to meet the needs of railways passing through big cities, it is called an underwater tunnel. The underground passages are called urban tunnels. Among the three types of tunnels, the mountain tunnels are the most constructed.

In tunnel engineering, annular ribs need to be used to support the tunnel. During the fixing process of the annular ribs, positioning equipment is required to locate the guide rails for the annular ribs.

At present, the existing positioning equipment for annular bars used in tunnel construction has the following drawbacks;

1) There are defects in the fixation of the circumferential rib positioning equipment, and the circumferential rib cannot be fixed accurately and effectively.

2) Circumferential rib positioning equipment cannot straighten the cable, which makes the cable trend disorderly, which is not conducive to the construction of the tunnel.

3) The stress on the positioning equipment is prone to deviation.

SUMMARY OF THE INVENTION

Aiming at the deficiencies of the prior art, the present invention provides a positioning device for the annular rib for tunnel construction to solve the problem of inconvenient fixation of the existing locating device for the annular rib for tunnel construction proposed in the above-mentioned background art.

In order to achieve the above purpose, the present invention is achieved through the following technical solutions: a positioning device for annular ribs for tunnel construction, comprising ground, a tunnel body, a circumferential rib body and a fixture body, and the top of the annular rib body is connected to the The top wall inside the tunnel body is in contact, the number of the fixture body is two, and the bottoms of the two fixture bodies are respectively fixedly connected with the two ends of the bottom of the annular rib body, and the two side walls inside the tunnel body are both A fixing groove is formed, a threaded groove is formed at the bottom of the fixing groove, a positioning screw is threadedly connected to the inside of the threaded groove, and a fixing rod is fixedly connected to the end of the positioning screw away from the threaded groove. The inside of the body is provided with a fixing hole, and the end of the fixing rod away from the positioning screw piece sequentially penetrates the fixing slot and the fixing hole and extends to the outside of the fixture body, the interior of the fixing rod is provided with a cavity, and the inner cavity of the cavity is A rotating shaft is fixedly connected to the front of the rotating shaft, and the rear end of the rotating shaft is fixedly connected to the back of the inner cavity of the cavity. A rotating plate is movably installed on the surface of the rotating shaft. One end of the reset elastic resisting member away from the rotating plate is fixedly connected to the top wall of the cavity, and the sides of the bottoms of the two rotating plates that are far away from each other are fixedly connected with clamping rods, and the bottom wall of the cavity has an opening. There is a clamping hole, the bottom wall inside the fixing hole is provided with a clamping slot, the end of the clamping rod away from the rotating plate penetrates the clamping hole and extends to the interior of the clamping slot, and the top of the part outside the fixing hole is movable. A screw is connected, and the bottom end of the screw penetrates the top of the fixing rod and extends to the inside of the cavity. A threaded block is threaded on the surface of the part of the screw located in the cavity of the cavity, and the bottom of the threaded block is fixedly connected with a threaded block. A push block, one end of the push block away from the threaded block is in contact with the top of the rotating plate, a sliding rod is fixedly connected to the top wall of the cavity, and a sliding block is movably installed on the surface of the sliding rod, and the sliding block is close to One side of the threaded block is fixedly connected with the side of the threaded block close to the slider through a connecting rod.

Preferably, a locking block is fixedly connected to one end of the fixing rod outside the fixture body, and the locking block is V-shaped.

Preferably, the number of the reset elastic resistance members located on the top of one of the rotating plates is two, and the two reset elastic resistance members are both located on the left side of the top of the rotating plate.

Preferably, the bottom end of the sliding rod is fixedly connected with a stopper, and the diameter of the stopper is larger than that of the slider.

Preferably, a fixing seat is fixedly connected to the bottoms of the sides of the two fixture bodies that are close to each other, a fixing pile penetrates through the interior of the fixing seat, and the bottom end of the fixing pile extends to the interior of the ground.

Preferably, a fixing block is fixedly connected to one side of the two fixture bodies that are close to each other, a buffer rod is fixedly connected to the bottom of the fixing block, and a buffer device is fixedly connected to the bottom of the buffer rod. The bottom is fixedly connected to the movable rod, the top of the fixed seat is provided with a stop groove, the interior of the stop groove is movably installed with a stop block, and the top of the stop block passes through the stop groove and is connected with the bottom end of the movable rod. Fixed connection.

Preferably, the buffer device includes a buffer seat and a buffer elastic resistance member, a buffer groove is formed at the top of the buffer seat, the bottom end of the buffer elastic resistance member is fixedly connected with the groove bottom of the buffer groove, and the buffer elastic resistance member The top end of the buffer rod is fixedly connected with the limit block, and the bottom end of the buffer rod extends to the inside of the buffer groove and is fixedly connected with the top of the limit block.

Preferably, an anti-torsion groove is formed on the inner wall of one side of the two retaining grooves away from each other, the bottom of the anti-torsion groove is fixedly connected with a torsion elastic resistance piece, and the torsion elastic resistance piece is far away from the torsion resistance groove. One end is fixedly connected to the side of the stopper.

Compared with the prior art, the beneficial effects of the present invention are:

1. The positioning equipment for the annular ribs used in the tunnel construction is to set the fixing groove, the thread groove, the positioning screw, the fixing rod, the fixing hole and the locking block. The locking block can be rotated with a tool, or the locking block can be manually rotated. The positioning screw is threadedly connected to the inside of the threaded groove, so that the fixing rod and the fixture body are fixed, and the effect of facilitating the fixing of the fixture body is achieved.

2. The positioning equipment of the annular rib for the tunnel construction, by setting the cavity, the rotating shaft, the rotating plate, the reset elastic resistance member, the clamping rod, the clamping hole, the clamping groove, the screw rod, the threaded block, the pushing block, the sliding rod and the sliding block , When fixing the fixed rod, turn the screw, the screw drives the threaded block to move down on the screw, the threaded block drives the push block to move down, the threaded block drives the slider to move down on the sliding rod, the push block pushes the rotating plate, and rotates The plate rotates around the rotating shaft, and the reset elastic resist is compressed. When the clamping rod is aligned with the position of the slot, the screw is rotated in the opposite direction. The inside of the clamping groove makes the fixing of the clamping body more firm, so that the fixing of the annular rib body and the tunnel body is more firm.

3. The positioning equipment of the annular rib for tunnel construction, through the set block, when the slider slides down on the sliding rod, to prevent the sliding block from being separated from the sliding rod, as well as the set fixed seat and fixed pile, so that the fixed seat and the fixed pile can be fixed. The fixing of the seat and the ground is firmer, so that the fixing of the fixture body and the ground is firmer.

4. The positioning equipment of the annular ribs for tunnel construction is equipped with buffer rods, buffer devices, movable rods, buffer seats, buffer elastic resistance parts, buffer grooves and limit blocks. When the fixture body shakes, the buffer rod squeezes. Press the limit plate, the limit plate squeezes the buffer elastic resistance member, and the buffer elastic resistance member is compressed, so that the shaking of the fixture body can be eliminated, and the effect of preventing the fixture body from shaking is achieved.

5. The positioning equipment for the annular rib for tunnel construction is provided with a stop groove, a stop block, an anti-torsion groove and a torsional elastic resistance piece. When the fixture body is subjected to horizontal vibration or various stresses, the movable rod will be squeezed. Press the stop block, the stop block squeezes the torsion elastic resistance piece, and the torsion elastic resistance piece is compressed, so that the clamp body is subjected to horizontal vibration or various stresses to be eliminated, preventing the clamp body from being twisted and affecting the clamp. The effect of the body fixing the annular rib body.

Description of drawings

Fig. 1 is the structural representation of the present invention;

Fig. 2 is an enlarged view of the partial structure of part A in Fig. 1 of the present invention;

3 is a cross-sectional view of the connection structure of the buffer device and the fixed seat of the present invention;

Figure 4 is a side view of the locking block of the present invention.

In the figure: 1 ground, 2 tunnel body, 3 annular rib body, 4 clamp body, 5 fixed groove, 6 thread groove, 7 set screw, 8 fixed rod, 9 fixed hole, 10 cavity, 11 shaft, 12 Rotating plate, 13 reset elastic resistance parts, 14 clamping rod, 15 clamping hole, 16 clamping slot, 17 screw rod, 18 threaded block, 19 pushing block, 20 sliding rod, 21 sliding block, 22 locking block, 23 block, 24 Fixed seat, 25 fixed pile, 26 fixed block, 27 buffer rod, 28 buffer device, 29 movable rod, 30 stop groove, 31 stop block, 32 buffer seat, 33 buffer elastic resistance piece, 34 buffer groove, 35 limit Blocks, 36 anti-torsion grooves, 37 torsion elastic anti-parts.

Detailed ways

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, but not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

1-4, the present invention provides a technical solution: a positioning device for a circumferential rib for tunnel construction, comprising a ground 1, a tunnel body 2, a circumferential rib body 3 and a fixture body 4, and the circumferential rib body The top of 3 is in contact with the top wall inside the tunnel body 2, the number of fixture bodies 4 is two, and the bottoms of the two fixture bodies 4 are respectively fixedly connected with the two ends of the bottom of the annular rib body 3. Inside the tunnel body 2 The two side walls are provided with fixed grooves 5, the bottom of the fixed groove 5 is provided with a threaded groove 6, the interior of the threaded groove 6 is threadedly connected with a positioning screw 7, and the end of the positioning screw 7 away from the threaded groove 6 is fixedly connected with a fixed Rod 8, the interior of the fixture body 4 is provided with a fixing hole 9, and the end of the fixing rod 8 away from the positioning screw 7 passes through the fixing slot 5 and the fixing hole 9 in turn and extends to the outside of the fixture body 4, and the locking block is rotated with a tool. 22, so that the positioning screw 7 is threadedly connected to the inside of the threaded groove 6, so that the fixing rod 8 and the fixture body 4 are fixed, and the end of the fixing rod 8 located outside the fixture body 4 is fixedly connected with a locking block 22, locking The block 22 is V-shaped, and the locking block 22 can also be manually rotated, which is convenient for fixing. When the locking block 22 is fixed, the end of the locking block 22 away from the tunnel wall is V-shaped. The locking block 22 can be used for cable routing , so that the cables for tunnel construction can be fixed, and the arrangement of the cables is convenient. The interior of the fixing rod 8 is provided with a cavity 10, the front of the cavity 10 is fixedly connected with a rotating shaft 11, and the rear end of the rotating shaft 11 is connected to the cavity. 10 The back of the inner cavity is fixedly connected, the surface of the rotating shaft 11 is movably installed with a rotating plate 12, and the sides of the tops of the two rotating plates 12 away from each other are fixedly connected with a reset elastic resistance member 13. At this time, the reset elastic resistance member 13 is in its original state. In the long state, the end of the reset elastic resistance member 13 away from the rotating plate 12 is fixedly connected to the top wall of the inner cavity of the cavity 10. The number of the reset elastic resistance member 13 located on the top of one rotating plate 12 is two, and the two reset elastic resistance members are The parts 13 are located on the left side of the top of the rotating plate 12 to prevent the elastic resistance parts 13 from losing elastic deformation. A card hole 15 is opened, a card slot 16 is formed on the bottom wall of the fixed hole 9 , the end of the card rod 14 away from the rotating plate 12 penetrates the card hole 15 and extends to the inside of the card groove 16 , and the fixed rod 8 is located outside the fixed hole 9 . A screw 17 is movably connected to the top of the part, and the bottom end of the screw 17 movably penetrates the top of the fixing rod 8 and extends to the interior of the cavity 10. The surface of the part of the screw 17 located in the inner cavity of the cavity 10 is threaded with a threaded block 18. The bottom of the block 18 is fixedly connected with a push block 19, and one end of the push block 19 away from the threaded block 18 is in contact with the top of the rotating plate 12. The top wall of the inner cavity of the cavity 10 is fixedly connected with a sliding rod 20, and the surface of the sliding rod 20 is movably installed There is a slider 21. The side of the threaded block 18 close to the slider 21 is fixedly connected with the side of the threaded block 18 close to the slider 21 through a connecting rod. When the fixing rod 8 is fixed, the screw 17 is rotated, and the screw 17 drives the threaded block 18. Move down on screw 17, thread The block 18 drives the push block 19 to move down, the threaded block 18 drives the slider 21 to move down on the slide bar 20, the push block 19 pushes the rotating plate 12, the rotating plate 12 rotates around the rotating shaft 11, and the reset elastic resistance member 13 is compressed , when the clamping rod 14 is aligned with the position of the clamping slot 16, the screw 17 is reversely rotated, the screw 17 drives the threaded block 18 to move upward on the screw 17, and the reset elastic resistance member 13 is reset, so that the clamping rod 1 is stuck in the clamping slot 16. Inside, the bottom end of the slide bar 20 is fixedly connected with a stopper 23, the diameter of the stopper 23 is larger than that of the slider 21, when the slider 21 slides down on the slide bar 20, the slider 20 is prevented from being separated from the slide bar 21. A fixing seat 24 is fixedly connected to the bottom of the side of the two fixture bodies 4 that are close to each other. A fixing pile 25 runs through the interior of the fixing seat 24, and the bottom end of the fixing pile 25 extends to the interior of the ground 1, so that the fixing seat 24 is more firmly fixed with the ground 1, so that the fixing of the fixture body 4 and the ground 1 is more firm, and the sides of the two fixture bodies 4 that are close to each other are fixedly connected with a fixing block 26, and the bottom of the fixing block 26 is fixedly connected with a The buffer rod 27, the bottom of the buffer rod 27 is fixedly connected to the buffer device 28, the bottom of the buffer device 28 is fixedly connected to the movable rod 29, the top of the fixed seat 24 is provided with a stop groove 30, and the interior of the stop groove 30 is movably installed with a stop block 31. The top end of the stop block 31 protrudes out of the stop groove 30 and is fixedly connected with the bottom end of the movable rod 29. The buffer device 28 includes a buffer seat 32 and a buffer elastic resistance member 33. The top of the buffer seat 32 is provided with a buffer groove 34. The bottom end of the resisting member 33 is fixedly connected to the bottom of the buffer groove 34 , the top end of the buffering elastic resisting member 33 is fixedly connected to the limit block 35 , and the bottom end of the buffer rod 27 extends to the inside of the buffer groove 34 and is connected with the limit block 35 . The top is fixedly connected. When the clamp body 4 shakes, the buffer rod 27 squeezes the limit plate 35, the limit plate 35 squeezes the buffer elastic resistance member 33, and the buffer elastic resistance member 33 is compressed, so that the clamp body 4 is The shaking is eliminated, and the purpose of preventing the fixture body 4 from shaking is achieved. The inner wall of the side of the two retaining grooves 30 away from each other is provided with an anti-torsion groove 36, and the bottom of the anti-torsion groove 36 is fixedly connected with a torsion elastic resistance member 37. The end of the torsional elastic resist 37 away from the anti-torsion groove 36 is fixedly connected to the side of the stop block 31. When the fixture body 4 is subjected to horizontal vibration or various stresses, the movable rod 29 squeezes the stop block 31, The stopper 31 squeezes the torsional elastic resistance member 37, and the torsional elastic resistance member 37 is compressed, so that the clamp body 4 is subjected to horizontal vibration or various stresses to be eliminated, preventing the clamp body 4 from being twisted and affecting the clamp. The main body 4 is for the purpose of fixing the annular rib body 3 .

To sum up, the positioning equipment for the annular rib for tunnel construction uses a tool to rotate the locking block by setting the fixing groove 5, the threaded groove 6, the positioning screw 7, the fixing rod 8, the fixing hole 9 and the locking block 22. 22, the locking block 22 can also be manually rotated, so that the positioning screw 7 is threadedly connected to the inside of the threaded groove 6, so that the fixing rod 8 and the fixture body 4 are fixed, and the effect of facilitating the fixing of the fixture body 4 is achieved.

At the same time, by setting the cavity 10, the rotating shaft 11, the rotating plate 12, the reset elastic resistance member 13, the clamping rod 14, the clamping hole 15, the clamping groove 16, the screw rod 17, the threaded block 18, the push block 19, the sliding rod 20 and the sliding block 21. When fixing the fixed rod 8, rotate the screw 17, the screw 17 drives the threaded block 18 to move down on the screw 17, the threaded block 18 drives the push block 19 to move down, and the threaded block 18 drives the slider 21 on the sliding rod 20 Move downward, the push block 19 pushes the rotating plate 12, the rotating plate 12 rotates around the rotating shaft 11, and the reset elastic resistance member 13 is compressed. Drive the threaded block 18 to move upward on the screw 17, and reset the elastic resistance member 13 to reset, so that the clamping rod 14 is stuck in the interior of the clamping groove 16, so that the fixing of the clamping body 4 is more firm, so that the annular rib body 3 and the tunnel body are fixed. 2 is more firmly fixed.

In addition, through the provided stopper 23, when the slider 21 slides down on the sliding rod 20, the sliding block 20 is prevented from being separated from the sliding rod 21, and the fixed seat 24 and the fixed pile 25 are provided, so that the fixed seat 24 is connected to the ground. 1 is more firmly fixed, so that the fixture body 4 and the ground 1 are more firmly fixed.

In addition, by providing the buffer rod 27, the buffer device 28, the movable rod 29, the buffer seat 32, the buffer elastic resistance member 33, the buffer groove 34 and the limit block 35, when the fixture body 4 shakes, the buffer rod 27 squeezes the limit. The position plate 35 and the limit plate 35 squeeze the buffer elastic resistance member 33, and the buffer elastic resistance member 33 is compressed, so that the shaking of the fixture body 4 is eliminated, and the effect of preventing the fixture body 4 from shaking is achieved.

In addition, by providing the stop groove 30 , the stop block 31 , the anti-torsion groove 36 and the torsion elastic resistance member 37 , when the clamp body 4 is subjected to horizontal vibration or various stresses, the movable rod 29 presses the stop block 31 , the stopper 31 squeezes the torsional elastic resistance member 37, and the torsional elastic resistance member 37 is compressed, so that the clamp body 4 is subjected to horizontal vibration or various stresses to be eliminated, preventing the clamp body 4 from twisting and affecting the clamping The main body 4 has the effect of fixing the annular rib body 3 .

It should be noted that, in this document, relational terms such as first and second are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any relationship between these entities or operations. any such actual relationship or sequence exists. Moreover, the terms "comprising", "comprising" or any other variation thereof are intended to encompass a non-exclusive inclusion such that a process, method, article or device that includes a list of elements includes not only those elements, but also includes not explicitly listed or other elements inherent to such a process, method, article or apparatus.

Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, and substitutions can be made in these embodiments without departing from the principle and spirit of the invention and modifications, the scope of the present invention is defined by the appended claims and their equivalents.

Claims (8)

1. The utility model provides a positioning equipment of hoop muscle for tunnel construction, includes ground (1), tunnel body (2), hoop muscle body (3) and fixture body (4), its characterized in that: the top of the hoop reinforcement body (3) is in contact with the top wall of the inside of the tunnel body (2), the number of the fixture bodies (4) is two, the bottoms of the two fixture bodies (4) are respectively and fixedly connected with the two ends of the bottom of the hoop reinforcement body (3), two side walls of the inside of the tunnel body (2) are respectively provided with a fixed groove (5), the bottom of each fixed groove (5) is provided with a thread groove (6), the inside of each thread groove (6) is in threaded connection with a positioning screw piece (7), one end, far away from the thread groove (6), of each positioning screw piece (7) is fixedly connected with a fixed rod (8), the inside of each fixture body (4) is provided with a fixed hole (9), one end, far away from the positioning screw piece (7), of each fixed rod (8) sequentially penetrates through the fixed grooves (5) and the fixed holes (9) and extends to the outside of, the cavity (10) is formed in the fixing rod (8), the rotating shaft (11) is fixedly connected to the front surface of the inner cavity of the cavity (10), the rear end of the rotating shaft (11) is fixedly connected with the back surface of the inner cavity of the cavity (10), the rotating plates (12) are movably mounted on the surface of the rotating shaft (11), the elastic restoring pieces (13) are fixedly connected to one sides of the tops of the two rotating plates (12) far away from each other, one ends of the elastic restoring pieces (13) far away from the rotating plates (12) are fixedly connected with the top wall of the inner cavity of the cavity (10), clamping rods (14) are fixedly connected to one sides of the bottoms of the two rotating plates (12) far away from each other, clamping holes (15) are formed in the bottom wall of the inner cavity of the cavity (10), clamping grooves (16) are formed in the bottom wall of the inner cavity of the fixing hole (9), and one ends of the clamping rods (14) far away from the rotating plates, the utility model discloses a fixing device for a motor vehicle, including dead lever (8), cavity (10), screw rod (17), bottom fixedly connected with promotion piece (19) of screw rod (17), the top swing joint that dead lever (8) are located the outside part of fixed orifices (9) has screw rod (17), the bottom activity of screw rod (17) runs through the top of dead lever (8) and extends to the inside of cavity (10), the surface thread that screw rod (17) are located the part of cavity (10) inner chamber installs screw block (18), the bottom fixedly connected with of screw block (18) promotes piece (19), promote the top contact of the one end that screw block (18) were kept away from in piece (19) and rotor plate (12), the roof fixedly connected with slide bar (20) of cavity (10) inner chamber, the surface activity of slide bar (20) installs slider (21), one side of the screw block (18) that slider (21) are close to.

2. The apparatus for positioning the circumferential rib for tunnel construction according to claim 1, wherein: the fixing rod (8) is located at one end outside the fixture body (4) and is fixedly connected with a locking block (22), and the locking block (22) is V-shaped.

3. The apparatus for positioning the circumferential rib for tunnel construction according to claim 1, wherein: the number of the reset elastic resisting pieces (13) positioned at the top of one rotating plate (12) is two, and the two reset elastic resisting pieces (13) are positioned at the left side of the top of the rotating plate (12).

4. The apparatus for positioning the circumferential rib for tunnel construction according to claim 1, wherein: the bottom end of the sliding rod (20) is fixedly connected with a stop block (23), and the diameter of the stop block (23) is larger than that of the sliding block (21).

5. The apparatus for positioning the circumferential rib for tunnel construction according to claim 1, wherein: the fixture comprises two fixture bodies (4), wherein a fixing seat (24) is fixedly connected to the bottom of one side, close to each other, of each fixture body, a fixing pile (25) penetrates through the inside of each fixing seat (24), and the bottom end of each fixing pile (25) extends to the inside of the ground (1).

6. The apparatus for positioning a circumferential rib for tunnel construction according to any one of claims 5, wherein: two equal fixedly connected with fixed block (26) in one side that fixture body (4) are close to each other, the bottom fixedly connected with buffer beam (27) of fixed block (26), bottom fixed connection buffer (28) of buffer beam (27), bottom fixed connection movable rod (29) of buffer (28), locking groove (30) have been seted up at the top of fixing base (24), the inside movable mounting of locking groove (30) has stop block (31), stop block (31) top wear out locking groove (30) and with the bottom fixed connection of movable rod (29).

7. The apparatus for positioning the circumferential bead for tunnel construction according to claim 6, wherein: buffer (28) are including buffer seat (32) and the anti piece of buffering elasticity (33), buffer slot (34) are seted up at the top of buffer seat (32), the bottom of the anti piece of buffering elasticity (33) and the tank bottom fixed connection of buffer slot (34), the top fixedly connected with stopper (35) of the anti piece of buffering elasticity (33), the bottom of buffer lever (27) extend to the inside of buffer slot (34) and with the top fixed connection of stopper (35).

8. The apparatus for positioning the circumferential bead for tunnel construction according to claim 6, wherein: an anti-torsion groove (36) is formed in the inner wall of one side, away from each other, of each of the two stop grooves (30), a torsion elastic anti-part (37) is fixedly connected to the groove bottom of each anti-torsion groove (36), and one end, away from each anti-torsion groove (36), of each torsion elastic anti-part (37) is fixedly connected with the side face of each stop block (31).

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