Tunnel secondary lining side wall connecting steel bar positioning clamp

Abstract

The utility model discloses a tunnel secondary lining side wall connecting steel bar positioning fixture, which relates to the technical field of tunnel construction equipment, and comprises a mounting plate and a steel bar positioning clamping mechanism, and a transverse movement alignment mechanism is mounted on the upper side of the mounting plate; the steel bar positioning and clamping mechanism comprises angle steel bars, positioning grooves, a U-shaped connecting sleeve and a downward pressing and clamping assembly, two transverse angle steel bars are detachably installed at the front end and the rear end of the upper side of a transverse moving plate in the transverse moving and aligning mechanism respectively, the positioning grooves are transversely formed in each angle steel bar at equal intervals, the bottoms of the positioning grooves are in an arc shape, and the U-shaped connecting sleeve is connected with the U-shaped connecting sleeve through the U-shaped connecting sleeve. Longitudinal U-shaped connecting sleeves are transversely and fixedly connected between the two angle steel bars at equal intervals, and notches are formed in the middles of the two sides of each U-shaped connecting sleeve respectively. According to the tunnel secondary lining side wall connecting reinforcing steel bar positioning fixture, the spacing, the line type and the connecting quality of the reinforcing steel bars are guaranteed, the reinforcing steel bar binding efficiency is improved, the reinforcing steel bar arrangement position is accurate, and effective connection of the upper reinforcing steel bar and the lower reinforcing steel bar is facilitated.

Description

Technical Field

[0001] The utility model relates to the technical field of tunnel construction equipment, in particular to a tunnel secondary lining side wall connecting steel bar positioning fixture. Background Art

[0002] At present, during the tunnel construction process, the reserved steel bars of the tunnel invert secondary lining are long and dense, the steel bar spacing and line type are difficult to control, and the connection between the upper and lower layers of steel bars is not smooth. At the same time, there is an interval between the construction of the invert secondary lining and the secondary lining. The construction joint here is the weak point of the connection between the steel bar project and the concrete project. If the connection steel bars of the tunnel secondary lining side wall are not handled properly, it will seriously affect the quality of the tunnel project. Utility Model Content

[0003] The technical problem to be solved by the utility model is to overcome the existing defects and provide a tunnel secondary lining side wall connecting steel bar positioning fixture, a U-shaped connecting sleeve is set according to the designed spacing, the fixture is installed before the side wall connecting steel bars are fixed, the steel bars are combed and placed in the U-shaped connecting sleeve, the steel bar control quality is improved, the steel bar spacing, line type and connection quality are all guaranteed, the steel bar binding efficiency is improved, the steel bar layout position is accurate, and the effective connection of the upper and lower steel bars is facilitated, which can effectively solve the problems in the background technology.

[0004] To achieve the above purpose, the utility model provides the following technical solution: a tunnel secondary lining side wall connection steel bar positioning fixture, comprising:

[0005] A mounting plate, with a lateral movement alignment mechanism mounted on the upper side;

[0006] The steel bar positioning and clamping mechanism includes an angle steel bar, a positioning groove, a U-shaped connecting sleeve and a downward pressing clamping assembly. The front and rear ends of the upper side of the transverse moving plate in the transverse moving alignment mechanism are respectively detachably installed with two transverse angle steel bars, and each angle steel bar is respectively provided with positioning grooves at equal distances in the transverse direction. The bottom of the positioning groove is arc-shaped, and a longitudinal U-shaped connecting sleeve is fixedly connected with equal distances in the transverse direction between the two angle steel bars. Notches are respectively provided in the middle of both sides of the U-shaped connecting sleeve, and the front and rear ends of the U-shaped connecting sleeve correspond to the positioning grooves on the two angle steel bars respectively, and downward pressing clamping assemblies are installed on the two angle steel bars.

[0007] The mounting plate is used to be installed at the required position. The lateral alignment mechanism can drive the two angle steel bars to move horizontally left and right, so that the U-shaped connecting sleeve can be aligned with the steel bars that need to be positioned and clamped. The steel bars extending out of the second lining side wall are inserted into the corresponding U-shaped connecting sleeve. The shape of the bottom of the positioning groove can provide good support for the bottom of the steel bar. The downward pressing clamping assembly can clamp the steel bar to the bottom of the U-shaped connecting sleeve, ensuring the accurate layout of the steel bar and facilitating the effective connection of subsequent steel bars.

[0008] Furthermore, the downward pressure clamping assembly includes a fixing plate 1, a sliding column, a pressure rod, an arc clamping plate, a clamping stud, a knob and a fixing plate 2. Two fixing plates 1 are arranged between the two ends of the two angle steel bars. The two fixing plates 1 are respectively fixedly connected to the bottom ends of the two sliding columns. The middle parts of the two angle steel bars are respectively fixedly connected to the two ends of the fixing plate 2. The fixing plate 2 is threadedly connected to the bottom end of the clamping stud. The sliding holes at the two ends of the pressure rod are slidably connected to the two sliding columns. The screw hole in the middle of the pressure rod is threadedly connected to the clamping stud. The top end of the clamping stud is fixedly connected with a knob. The bottom of the pressure rod is provided with an arc clamping plate at a position corresponding to the middle of the U-shaped connecting sleeve. By turning the clamping stud clockwise through the knob, the threaded action of the clamping stud and the pressure rod can drive the pressure rod to rise along the sliding column, allowing the arc clamping plate to leave the U-shaped connecting sleeve. After the steel bar is inserted into the U-shaped connecting sleeve, the clamping stud is turned counterclockwise through the knob, and the pressure rod descends along the sliding column. The pressure rod extends into the notches on both sides of the U-shaped connecting sleeve, and the arc clamping plate clamps the steel bar to the bottom of the U-shaped connecting sleeve. The U-shaped connecting sleeve is used to keep the steel bar straight and prevent the steel bar from shifting during construction.

[0009] Furthermore, the downward clamping assembly further includes a disassembly bolt, and the position of the pressure rod corresponding to the arc clamping plate is interspersed with the disassembly bolt, and the bottom end of the disassembly bolt is threadedly connected to the top of the corresponding arc clamping plate. With the help of the disassembly bolt, the arc clamping plate can be detachably installed, which is convenient for replacing the arc clamping plate.

[0010] Further, the transverse alignment mechanism includes a transverse plate, a transverse groove, a transverse slider, a control block, a transverse groove, a transverse stud and a twist head. The mounting plate is provided with a transverse groove, in which a transverse slider is transversely slidably connected, the top of the transverse slider is fixedly connected to the bottom of the transverse plate, the mounting plate is provided with a transverse groove, in which a transverse stud is rotatably connected, the transverse stud is threadedly connected to a threaded hole on the control block, the top of the control block is fixedly connected to the bottom of the transverse plate, and one end of the transverse stud is fixedly connected to the twist head. The transverse groove and the transverse slider cooperate to guide and limit the transverse plate, and the twist head drives the transverse stud to rotate clockwise, and the threaded action of the transverse stud and the control block can drive the transverse plate to move to the left along the transverse groove, and the twist head drives the transverse stud to rotate counterclockwise, and the transverse plate moves to the right along the transverse groove, so that the U-shaped connecting sleeve can be aligned with the steel bar.

[0011] Furthermore, bolts are included, and countersunk holes are respectively opened at both ends of the angle steel bar, and bolts are inserted into the countersunk holes, and the bottom ends of the bolts are threadedly connected to the upper side of the transverse plate. The bolts can realize the detachable fixing of the ends of the diagonal steel bar to the transverse plate.

[0012] Furthermore, it also includes a pad, each bolt passes through a through hole on the pad, and the pad is located between the transverse plate and the angle steel bar. If the height of the U-shaped connecting sleeve is not enough to align with the steel bar, the angle steel bar can be raised by padding with pads of different thicknesses.

[0013] Furthermore, it also includes a fixing seat and a fixing hole, wherein the four corners of the mounting plate are fixedly connected with the fixing seat, and the fixing seat is provided with a fixing hole, and a mounting bolt is inserted into the fixing hole, and the fixing seat can be fixed by the mounting bolt, thereby fixing the mounting plate.

[0014] Furthermore, it also includes a concrete blocking assembly, and the rear side of the mounting plate is detachably mounted with the concrete blocking assembly, which can prevent concrete from entering between the transverse plate and the angle steel bar during construction.

[0015] Furthermore, the concrete blocking assembly includes a slot, a concrete baffle and a plug rod, wherein two slots are provided on the rear side of the mounting plate, and two plug rods are fixedly connected to the front bottom of the concrete baffle, and the two plug rods are respectively plugged into the two slots. The slot and the plug rod cooperate to install the concrete baffle to the rear side of the mounting plate, so as to prevent concrete from entering between the transverse plate and the angle steel bar during construction, wherein the top surface of the concrete baffle is flush with the upper side of the angle steel bar.

[0016] Furthermore, it also includes an end protection mechanism, and the upper sides of both ends of the mounting plate are respectively installed with end protection mechanisms. If concrete falls into the transverse groove and the transverse slide groove during construction, it will affect the movement of the transverse slide block and the control block. Therefore, the end protection mechanism is set to prevent the concrete from falling into the transverse groove and the transverse slide groove during construction.

[0017] Compared with the prior art, the utility model has the following beneficial effects: the second lining side wall connecting steel bar positioning fixture of the tunnel has the following advantages:

[0018] 1. The mounting plate is used to be installed at the required position. The lateral alignment mechanism can drive the two angle steel bars to move horizontally left and right, so that the U-shaped connecting sleeve can be aligned with the steel bars that need to be positioned and clamped. The steel bars extending from the second lining side wall are inserted into the corresponding U-shaped connecting sleeve. The shape of the bottom of the positioning groove can provide good support for the bottom of the steel bar. Pressing down the clamping assembly can clamp the steel bar to the bottom of the U-shaped connecting sleeve to ensure the accurate layout of the steel bar and facilitate the effective connection of the subsequent steel bars.

[0019] 2. Set the U-shaped connecting sleeve according to the designed spacing, install the clamp before fixing the side wall connecting steel bars, comb the steel bars so that they are located in the U-shaped connecting sleeve, improve the quality of steel bar control, ensure the steel bar spacing, line shape, and connection quality, and improve the efficiency of steel bar binding. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 It is a schematic diagram of the structure of the utility model;

[0021] Figure 2 For this utility model Figure 1 A schematic diagram of the partially enlarged structure at center A;

[0022] Figure 3 For this utility model Figure 1 A schematic diagram of the partially enlarged structure at B in the middle;

[0023] Figure 4 This is a schematic diagram of the rear side upward structure of the utility model;

[0024] Figure 5 It is a schematic diagram of the local structure of the utility model.

[0025] In the figure: 1 mounting plate, 2 transverse alignment mechanism, 21 transverse plate, 22 transverse slide groove, 23 transverse slider, 24 control block, 25 transverse groove, 26 transverse stud, 27 twist head, 3 steel bar positioning clamping mechanism, 31 angle steel bar, 32 positioning groove, 33 U-shaped connecting sleeve, 34 fixing plate one, 35 slide column, 36 pressure rod, 37 disassembly bolt, 38 arc clamping plate, 39 clamping stud, 310 knob, 311 fixing plate two, 4 end protection mechanism, 41 slot, 42 arch protection cover, 43 block, 5 fixing seat, 6 fixing hole, 7 slot, 8 concrete baffle, 9 plug rod, 10 bolt, 11 pad. DETAILED DESCRIPTION

[0026] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0027] For example, see Figures 1 to 5 , the utility model provides a technical solution: a tunnel secondary lining side wall connection steel bar positioning fixture, comprising a mounting plate 1 and a steel bar positioning clamping mechanism 3;

[0028] A lateral movement alignment mechanism 2 is installed on the upper side of the mounting plate 1;

[0029] It also includes a fixing seat 5 and a fixing hole 6. The four corners of the mounting plate 1 are respectively fixedly connected with the fixing seat 5, and the fixing seat 5 is provided with a fixing hole 6. The fixing hole 6 is interspersed with a mounting bolt, and the fixing seat 5 can be fixed by the mounting bolt, thereby fixing the mounting plate 1.

[0030] The steel bar positioning and clamping mechanism 3 includes an angle steel bar 31, a positioning groove 32, a U-shaped connecting sleeve 33 and a downward pressing clamping assembly. Two transverse angle steel bars 31 are detachably installed at the front and rear ends of the upper side of the transverse plate 21 in the transverse alignment mechanism 2. Positioning grooves 32 are opened on each angle steel bar 31 at equal distances in the transverse direction. The bottom of the positioning groove 32 is arc-shaped. A longitudinal U-shaped connecting sleeve 33 is fixedly connected with equal distances in the transverse direction between the two angle steel bars 31. Notches are opened in the middle of both sides of the U-shaped connecting sleeve 33. The front and rear ends of the U-shaped connecting sleeve 33 correspond to the positioning grooves 32 on the two angle steel bars 31, and downward pressing clamping assemblies are installed on the two angle steel bars 31.

[0031] The downward clamping assembly includes a fixing plate 1 34, a sliding column 35, a pressure rod 36, an arc clamping plate 38, a clamping stud 39, a knob 310 and a fixing plate 2 311. Two fixing plates 1 34 are arranged between the two ends of the two angle steel bars 31. The two fixing plates 1 34 are respectively fixedly connected to the bottom ends of the two sliding columns 35. The middle parts of the two angle steel bars 31 are respectively fixedly connected to the two ends of the fixing plate 2 311. The fixing plate 2 311 is threadedly connected to the bottom end of the clamping stud 39. The sliding holes at both ends of the pressure rod 36 are slidably connected to the two sliding columns 35. The screw hole in the middle part of the pressure rod 36 is threadedly connected to the clamping stud 39. The top end of the clamping stud 39 is fixedly connected with a knob 310. The bottom of the pressure rod 36 is provided with an arc clamping plate 38 at a position corresponding to the middle part of the U-shaped connecting sleeve 33. By turning the clamping stud 39 clockwise through the knob 310, the threaded action of the clamping stud 39 and the pressure rod 36 can drive the pressure rod 36 to rise along the sliding column 35, allowing the arc clamping plate 38 to leave the U-shaped connecting sleeve 33. After the steel bar is inserted into the U-shaped connecting sleeve 33, the clamping stud 39 is turned counterclockwise through the knob 310, and the pressure rod 36 descends along the sliding column 35. The pressure rod 36 extends into the notches on both sides of the U-shaped connecting sleeve 33, and the arc clamping plate 38 clamps the steel bar to the bottom of the U-shaped connecting sleeve 33. With the help of the U-shaped connecting sleeve 33, the steel bar is kept straight and the steel bar is prevented from shifting during construction.

[0032] The pressing clamping assembly further includes a disassembly bolt 37, which is inserted into the position of the pressing rod 36 corresponding to the arc clamping plate 38, and the bottom end of the disassembly bolt 37 is threadedly connected to the top of the corresponding arc clamping plate 38. With the help of the disassembly bolt 37, the arc clamping plate 38 can be detachably installed, which is convenient for replacing the arc clamping plate 38.

[0033] The transverse alignment mechanism 2 includes a transverse plate 21, a transverse sliding groove 22, a transverse slider 23, a control block 24, a transverse groove 25, a transverse stud 26 and a twist head 27. A transverse sliding groove 22 is provided on the mounting plate 1, and a transverse slider 23 is transversely slidably connected in the transverse sliding groove 22. The top of the transverse slider 23 is fixedly connected to the bottom of the transverse plate 21. A transverse groove 25 is provided on the mounting plate 1, and a transverse stud 26 is rotatably connected in the transverse groove 25. The transverse stud 26 is threadedly connected to the threaded hole on the control block 24. The top of the control block 24 is fixedly connected to the bottom of the transverse plate 21, and one end of the transverse stud 26 is fixedly connected to the twist head 27. The transverse sliding groove 22 and the transverse sliding block 23 cooperate to guide and limit the transverse plate 21. The transverse stud 26 is driven to rotate clockwise by the twist head 27. The threaded action of the transverse stud 26 and the control block 24 can drive the transverse plate 21 to move to the left along the transverse sliding groove 22. The transverse stud 26 is driven to rotate counterclockwise by the twist head 27, and the transverse plate 21 moves to the right along the transverse sliding groove 22, so that the U-shaped connecting sleeve 33 can be aligned with the steel bar.

[0034] The angle steel bar 31 also includes bolts 10. Counterbores are respectively provided at both ends of the angle steel bar 31. The counterbores are provided with bolts 10. The bottom ends of the bolts 10 are threadedly connected to the upper side of the transverse plate 21. The bolts 10 can realize the detachable fixing of the ends of the angle steel bar 31 to the transverse plate 21.

[0035] It also includes a spacer 11, each bolt 10 passes through a through hole on the spacer 11, and the spacer 11 is located between the transverse plate 21 and the angle steel bar 31. If the height of the U-shaped connecting sleeve 33 is not enough to align the steel bar, the angle steel bar 31 can be raised by padding with spacers 11 of different thicknesses.

[0036] When in use, the mounting plate 1 is used to be installed at the required position, and the transverse alignment mechanism 2 can drive the two angle steel bars 31 to move horizontally left and right, so that the U-shaped connecting sleeve 33 can be aligned with the steel bars that need to be positioned and clamped, and the steel bars extending out of the second lining wall are inserted into the corresponding U-shaped connecting sleeve 33. The shape of the bottom of the positioning groove 32 can provide good support for the bottom of the steel bar. Pressing down the clamping assembly can clamp the steel bar to the bottom of the U-shaped connecting sleeve 33, ensuring that the steel bar is laid out accurately and facilitating the effective connection of the subsequent steel bars.

[0037] For example 2, please refer to Figures 1 to 5 The utility model provides a technical solution: a positioning fixture for connecting steel bars of the second lining side wall of a tunnel. The structure of this embodiment is roughly the same as that of the first embodiment, except that:

[0038] It also includes a concrete blocking assembly, which is detachably mounted on the rear side of the mounting plate 1. The concrete blocking assembly can prevent concrete from entering between the transverse plate 21 and the angle steel bar 31 during construction.

[0039] The concrete blocking assembly includes a slot 7, a concrete baffle 8 and an insertion rod 9. Two slots 7 are provided on the rear side of the mounting plate 1. Two insertion rods 9 are fixedly connected to the front bottom of the concrete baffle 8. The two insertion rods 9 are respectively plugged into the two slots 7. The slots 7 and the insertion rods 9 cooperate to install the concrete baffle 8 to the rear side of the mounting plate 1 to prevent concrete from entering between the transverse plate 21 and the angle steel bar 31 during construction, wherein the top surface of the concrete baffle 8 is flush with the upper side of the angle steel bar 31.

[0040] For example 3, please refer to Figures 1 to 5 The utility model provides a technical solution: a positioning fixture for connecting steel bars of the second lining side wall of a tunnel. The structure of this embodiment is roughly the same as that of the second embodiment, except that:

[0041] The mounting plate 1 also includes an end protection mechanism 4, which is respectively installed on the upper sides of both ends of the mounting plate 1. If concrete falls into the transverse groove 25 and the transverse slide groove 22 during construction, it will affect the movement of the transverse slide block 23 and the control block 24. Therefore, the end protection mechanism 4 is provided to prevent concrete from falling into the transverse groove 25 and the transverse slide groove 22 during construction.

[0042] The end protection mechanism 4 includes a slot 41, an arched protective cover 42, and a block 43. The front and rear sides of both ends of the mounting plate 1 are respectively provided with slots 41, and the upper sides of both ends of the mounting plate 1 are respectively provided with arched protective covers 42. The inner sides of both ends of the arched protective covers 42 are respectively integrally formed with blocks 43, and the blocks 43 are connected to the corresponding slots 41. The width of the slot 41 is greater than the block 43, so that the arched protective cover 42 can be adjusted left and right to adapt to the displaced transverse plate 21. The arched protective cover 42 is fixed to the end of the mounting plate 1 with the help of the block 43 and the slot 4. In order to facilitate the installation of the arched protective cover 42, the arched protective cover 42 and the block 43 are both made of rubber material, so that the block 43 can be inserted into the slot 41 after the arched protective cover 42 is deformed, and the arched protective cover 42 covers the transverse groove 25 and the transverse slide groove 22 to prevent concrete from entering the transverse groove 25 and the transverse slide groove 22.

[0043] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device.

[0044] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A tunnel secondary lining side wall connection steel bar positioning fixture, characterized in that: include: A mounting plate (1) having a lateral movement alignment mechanism (2) mounted on its upper side; The steel bar positioning and clamping mechanism (3) comprises an angle steel bar (31), a positioning groove (32), a U-shaped connecting sleeve (33) and a downward pressing clamping assembly. The front and rear ends of the upper side of the transverse moving plate (21) in the transverse moving alignment mechanism (2) are respectively detachably mounted with two transverse angle steel bars (31). Positioning grooves (32) are respectively arranged at equal distances in the transverse direction on each angle steel bar (31). The bottom of the positioning grooves (32) is in the shape of an arc. A longitudinal U-shaped connecting sleeve (33) is fixedly connected at equal distances in the transverse direction between the two angle steel bars (31). Notches are respectively arranged in the middle of the two sides of the U-shaped connecting sleeve (33). The front and rear ends of the U-shaped connecting sleeve (33) respectively correspond to the positioning grooves (32) on the two angle steel bars (31). The downward pressing clamping assembly is mounted on the two angle steel bars (31).

2. A tunnel secondary lining side wall connection steel bar positioning fixture according to claim 1, characterized in that: The pressing clamping assembly comprises a fixing plate 1 (34), a sliding column (35), a pressing rod (36), an arc clamping plate (38), a clamping stud (39), a knob (310) and a fixing plate 2 (311). Two fixing plates 1 (34) are arranged between the two ends of the two angle steel bars (31). The two fixing plates 1 (34) are respectively fixedly connected to the bottom ends of the two sliding columns (35). The middle parts of the two angle steel bars (31) are respectively fixedly connected to the fixing plate 2. The two ends of the pressure rod (36) are connected to the bottom end of the clamping stud (39) by threading on the second fixing plate (311), the sliding holes at the two ends of the pressure rod (36) are slidably connected to the two sliding posts (35), the screw hole in the middle of the pressure rod (36) is threadedly connected to the clamping stud (39), the top of the clamping stud (39) is fixedly connected with a knob (310), and the bottom of the pressure rod (36) is provided with an arc clamping plate (38) at a position corresponding to the middle of the U-shaped connecting sleeve (33).

3. A tunnel secondary lining side wall connection steel bar positioning fixture according to claim 2, characterized in that: The downward pressing clamping assembly also includes a disassembly bolt (37), and a disassembly bolt (37) is inserted into a position on the pressing rod (36) corresponding to the arc clamping plate (38), and the bottom end of the disassembly bolt (37) is threadedly connected to the top of the corresponding arc clamping plate (38).

4. A tunnel secondary lining side wall connection steel bar positioning fixture according to claim 1, characterized in that: The transverse alignment mechanism (2) comprises a transverse plate (21), a transverse sliding groove (22), a transverse slider (23), a control block (24), a transverse groove (25), a transverse stud (26) and a twisting head (27); the mounting plate (1) is provided with a transverse sliding groove (22); the transverse slider (23) is transversely slidably connected in the transverse sliding groove (22); the top of the transverse slider (23) is fixedly connected to the bottom of the transverse plate (21); the mounting plate (1) is provided with a transverse groove (25); the transverse stud (26) is rotatably connected in the transverse groove (25); the transverse stud (26) is threadedly connected to a threaded hole on the control block (24); the top of the control block (24) is fixedly connected to the bottom of the transverse plate (21); one end of the transverse stud (26) is fixedly connected to the twisting head (27).

5. The steel bar positioning fixture for connecting the secondary lining side wall of a tunnel according to claim 1, characterized in that: It also includes bolts (10). Countersunk holes are respectively opened at both ends of the angle steel bar (31). Bolts (10) are inserted into the countersunk holes. The bottom end of the bolt (10) is threadedly connected to the upper side of the transverse plate (21).

6. A tunnel secondary lining side wall connection steel bar positioning fixture according to claim 5, characterized in that: It also includes a cushion block (11), each bolt (10) passes through a through hole on the cushion block (11), and the cushion block (11) is located between the transverse plate (21) and the angle steel bar (31).

7. The second lining side wall connecting steel bar positioning fixture of a tunnel according to claim 1, characterized in that: It also comprises a fixing seat (5) and a fixing hole (6); the four corners of the mounting plate (1) are respectively fixedly connected to the fixing seat (5), and the fixing hole (6) is opened on the fixing seat (5).

8. The steel bar positioning fixture for connecting the secondary lining side wall of a tunnel according to claim 1, characterized in that: It also comprises a concrete blocking component, and the rear side of the mounting plate (1) is detachably mounted with the concrete blocking component.

9. A tunnel secondary lining side wall connection steel bar positioning fixture according to claim 8, characterized in that: The concrete blocking assembly comprises a slot (7), a concrete baffle (8) and an insertion rod (9); the rear side of the mounting plate (1) is provided with two slots (7); the front bottom of the concrete baffle (8) is fixedly connected with two insertion rods (9); the two insertion rods (9) are respectively plugged into the two slots (7).

10. The second lining side wall connecting steel bar positioning fixture of a tunnel according to claim 1, characterized in that: It also comprises an end protection mechanism (4), and the end protection mechanisms (4) are respectively installed on the upper sides of both ends of the mounting plate (1).

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