Tunnel large-span middle-step adjustable assembly type temporary cross brace

Abstract

The utility model provides an adjustable assembly type temporary cross brace for a tunnel large-span section middle step, and belongs to the technical field of tunnel exit large-span section middle step construction. The tunnel large-span section middle-step adjustable assembly type temporary cross brace comprises #-shaped modules and lead screw adjusting joints, the #-shaped modules are multiple in number and are installed inwards one by one from the two sides of a middle-step arch foot respectively, the two rows of #-shaped modules are located on the same straight line, and the lead screw adjusting joints are arranged on the two rows of #-shaped modules. The lead screw adjusting joint is arranged between the two rows of #-shaped modules and used for exerting pressure on the #-shaped modules on the two sides so that the cross brace can be integrally and stably connected to a middle step arch foot. The supporting device has the advantages of being convenient to disassemble and assemble, easy to recycle and good in supporting effect.

Description

Technical Field

[0001] The utility model relates to the technical field of middle step construction in a large-span section of a tunnel exit, and in particular to an adjustable assembled temporary cross brace for the middle step in a large-span section of a tunnel. Background Art

[0002] During the construction of the middle step of the large-span section at the tunnel exit, temporary cross braces are used for reinforcement. The temporary cross braces are made of I18 I-beams and assembled with bolts. The units are heavy and difficult to carry and assemble, and the ends of the temporary cross brace units are fixed and difficult to adjust. When they do not match the reserved deformation space, I-beams can only be used to lengthen them, which can easily form weak links and cause safety hazards. At the same time, the assembled I-beams are not easy to dismantle, resulting in a large amount of waste of raw materials. Utility Model Content

[0003] In order to solve the above technical problems, the utility model proposes an adjustable assembled temporary cross brace with steps in a large-span section of a tunnel.

[0004] The technical solution of the utility model is achieved in this way:

[0005] A temporary assembled cross brace with adjustable middle steps in a large-span tunnel section comprises a tic-tac-toe module and a screw adjustment joint. A plurality of tic-tac-toe modules are provided, and the plurality of tic-tac-toe modules are installed one by one inward from both sides of the middle step arch foot, and two rows of tic-tac-toe modules are located in a straight line. The screw adjustment joint is arranged between the two rows of tic-tac-toe modules and is used to apply pressure to the tic-tac-toe modules on both sides so that the cross brace is stably connected to the middle step arch foot as a whole.

[0006] Furthermore, the tic-tac-toe-shaped module is formed by connecting four I-beams end to end in sequence, and the two grooves of the I-beams are distributed up and down.

[0007] Furthermore, both ends of the lead screw adjustment section are detachably connected to the tic-tac-toe module, and two tic-tac-toe modules that are in contact with each other are detachably connected to each other.

[0008] Furthermore, a first connecting plate is fixedly installed at both ends of one side of the tic-tac-toe module, and a second connecting plate is fixedly installed at both ends of the screw adjustment joint. The first connecting plate and the second connecting plate are both provided with through holes for bolts to pass through, and the screw adjustment joint and the tic-tac-toe module and the two tic-tac-toe modules connected to each other are connected by the bolts.

[0009] Furthermore, a groove is provided at the top of one side of the tic-tac-toe module, a locking screw is provided on the tic-tac-toe module, a threaded sleeve at one end of the locking screw is provided with a locking screw sleeve rotatably mounted on the tic-tac-toe module, the locking screw can enter the groove by swinging downward, a positioning ring is provided at one end of the locking screw away from the locking screw sleeve, and a positioning groove for inserting the positioning ring is provided on the inner side surface of the tic-tac-toe module corresponding to the bottom end of the groove.

[0010] Furthermore, a terminal head is fixedly provided at one end of the locking screw away from the locking nut sleeve, the positioning ring is movably sleeved on the locking screw, and the positioning ring is located between the terminal head and the locking nut sleeve.

[0011] Furthermore, a rod sleeve is provided on the movable sleeve of the locking screw, and the rod sleeve is located between the locking screw sleeve and the positioning ring. The two sides of the top of the groove are arranged as outward-expanding inclined surfaces, the width of the groove is arranged to match the outer diameter of the rod sleeve, and the bottom end of the groove is arranged as a semicircular structure matched with the rod sleeve, and when the locking screw is in a horizontal state, the rod sleeve is located at the bottom end of the groove.

[0012] Furthermore, the end head is in a cylindrical structure, a rotating ball is rotatably installed inside the end head, a plug hole is provided on the rotating ball, and through grooves are provided on both sides of the end head.

[0013] Furthermore, it also includes an insertion rod capable of passing through the insertion hole, and the through groove is configured to allow the insertion rod to swing axially at the end with the rotating ball as the center.

[0014] Furthermore, the insertion hole is a threaded hole, both ends of the insertion rod are configured as threaded sections that can be threadedly matched with the threaded hole, and the portion of the insertion rod located between the two threaded sections is a bare rod section.

[0015] The utility model has the following beneficial effects:

[0016] The adjustable assembled temporary cross brace in the middle step of the large-span section of the tunnel is easy to install and recycle. It is also equipped with a screw adjustment section. By adjusting the length of the screw adjustment section, the temporary cross brace can be matched with the overall width, so that the temporary cross brace is tightly connected to the arch foot of the middle step to achieve a good force-bearing effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is an overall schematic diagram of Embodiment 1 of the present utility model;

[0018] Figure 2 This utility model Figure 1 A in the enlarged view;

[0019] Figure 3 It is a schematic diagram of a tic-tac-toe module of Example 1 of the utility model;

[0020] Figure 4 It is an overall schematic diagram of Embodiment 2 of the present utility model;

[0021] Figure 5 This utility model Figure 4 The enlarged view of point B in the figure;

[0022] Figure 6 It is a schematic diagram of a tic-tac-toe module of Example 2 of the utility model;

[0023] Figure 7 This utility model Figure 6 The enlarged view of point C in the figure;

[0024] Figure 8 It is a disassembled schematic diagram of the connecting components between two tic-tac-toe-shaped modules in Example 2 of the utility model.

[0025] In the figure: 1. T-shaped module; 2. screw adjustment section; 3. first connecting plate; 4. second connecting plate; 5. through hole; 6. groove; 7. locking screw; 8. locking screw sleeve; 9. positioning ring; 10. positioning groove; 11. end; 12. rod sleeve; 13. rotating ball; 14. jack; 15. through groove; 16. plug rod; 16.1. threaded section; 16.2. bare rod section. DETAILED DESCRIPTION

[0026] The technical solutions in the embodiments of the present invention are described clearly and completely below. Obviously, the described embodiments are only a part of the embodiments of the present invention, not all of them. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0027] like Figures 1 to 3 As shown, in Example 1, an adjustable assembled temporary cross brace for the middle step of a large-span tunnel section includes a tic-tac-toe module 1 and a screw adjustment joint 2. A plurality of tic-tac-toe modules 1 are provided, and the plurality of tic-tac-toe modules 1 are installed one by one inward from both sides of the middle step arch foot, and two rows of tic-tac-toe modules 1 are located in a straight line. The screw adjustment joint 2 is arranged between the two rows of tic-tac-toe modules 1, and is used to apply pressure to the tic-tac-toe modules 1 on both sides so that the cross brace is stably connected to the middle step arch foot as a whole.

[0028] A temporary cross brace is formed by assembling multiple cross-shaped modules 1, and the transportation, installation and recovery of a single cross-shaped module 1 are more convenient. The two rows of cross-shaped modules 1 are pushed outward by the screw adjustment section 2, so that the overall temporary cross brace is tightly connected to the middle step arch foot, achieving a good force effect.

[0029] Specifically, the tic-tac-toe module 1 is formed by connecting four I-beams end to end in sequence, and the two grooves of the I-beams are distributed up and down. The two ends of the lead screw adjustment section 2 are detachably connected to the tic-tac-toe module 1, and the two tic-tac-toe modules 1 that are in contact with each other are detachably connected to each other.

[0030] The first connecting plate 3 is fixedly installed at both ends of one side of the tic-tac-toe module 1, and the second connecting plate 4 is fixedly installed at both ends of the screw adjustment section 2. Through holes 5 for bolts to pass through are provided on the first connecting plate 3 and the second connecting plate 4, and the screw adjustment section 2 and the tic-tac-toe module 1 and the two tic-tac-toe modules 1 connected to each other are connected by bolts. When assembling the temporary cross brace, the first connecting plate 3 and the second connecting plate 4 are both located on the upward side of the tic-tac-toe module 1. In addition, during the assembly process, after the screw adjustment section 2 presses the two rows of tic-tac-toe modules 1 against the middle step arch foot, the bolts are tightened.

[0031] like Figures 4 to 8 As shown, in Example 2, a groove 6 is provided at the top of one side of the tic-tac-toe module 1, a locking screw 7 is provided on the tic-tac-toe module 1, one end of the locking screw 7 is threadedly sleeved with a locking screw sleeve 8 rotatably mounted on the tic-tac-toe module 1, the locking screw 7 can enter the groove 6 by swinging downward, a positioning ring 9 is provided at one end of the locking screw 7 away from the locking screw sleeve 8, and a positioning groove 10 for inserting the positioning ring 9 is provided on the inner side surface of the tic-tac-toe module 1 corresponding to the bottom end of the groove 6.

[0032] When assembling two tic-tac-toe modules 1, the locking screw 7 on one of the tic-tac-toe modules 1 is rotated downward and enters the grooves 6 of the two tic-tac-toe modules 1. When the locking screw 7 is rotated to a horizontal state, the locking screw 7 is rotated so that the positioning ring 9 enters the positioning groove 10 and fixes the two tic-tac-toe modules 1.

[0033] The end of the locking screw 7 away from the locking screw sleeve 8 is fixedly provided with an end cap 11, and the positioning ring 9 is movably sleeved on the locking screw 7, and the positioning ring 9 is located between the end cap 11 and the locking screw sleeve 8. The locking screw 7 is driven to rotate by applying a rotational force to the end cap 11. In the process of the end cap 11 driving the locking screw 7 to rotate, the positioning ring 9 can rotate relative to the locking screw 7 and the end cap 11 as a whole, thereby reducing the influence of the end cap 11 and the overall rotation of the locking screw 7 on the positioning ring 9 when the end cap 11 is squeezed into the positioning groove 10.

[0034] A rod sleeve 12 is provided on the movable sleeve of the locking screw 7, and the rod sleeve 12 is located between the locking screw sleeve 8 and the positioning ring 9. The two sides of the top of the groove 6 are arranged to be outward-expanded inclined surfaces, the width of the groove 6 is arranged to be adapted to the outer diameter of the rod sleeve 12, and the bottom end of the groove 6 is arranged to be a semicircular structure adapted to the rod sleeve 12, and when the locking screw 7 is in a horizontal state, the rod sleeve 12 is located at the bottom end of the groove 6.

[0035] In the process of splicing two tic-tac-toe modules 1, the notch of the groove 6 is in an outward expansion structure, so that the locking screw 7 has a guiding effect on the tic-tac-toe module 1 when it rotates into the groove 6, and the two tic-tac-toe modules 1 can be automatically aligned after the locking screw 7 enters the groove 6. In the process of the locking screw 7 entering the groove 6, the rod sleeve 12 reduces the friction between the locking screw 7 and the groove 6 by rolling on the inner wall of the groove 6, so that the locking screw 7 is easier to enter the groove 6, reducing the difficulty of operation.

[0036] After applying the above method, since the tic-tac-toe module 1 has a certain weight, it is rather laborious and inconvenient to align the two tic-tac-toe modules 1 by manually lifting them. Then, by rotating the locking screw 7 downward into the groove 6 and utilizing the guiding effect of the groove 6 on the locking screw 7, the alignment function of the two tic-tac-toe modules 1 can be achieved more conveniently.

[0037] The end 11 is a cylindrical structure, and a rotating ball 13 is rotatably installed inside the end 11. The rotating ball 13 is provided with a socket 14 through which the plug rod 16 can pass. Through grooves 15 are provided on both sides of the end 11. After the plug rod 16 passes through the socket 14, the bottom end of the plug rod 16 is overlapped on the well-shaped module 1, and then the plug rod 16 is pulled with the bottom end of the plug rod 16 as a fulcrum, which makes it easier to move the well-shaped module 1, making the splicing and alignment operation of the two well-shaped modules 1 more convenient and labor-saving. After the locking screw 7 enters the groove 6 and is in a horizontal state, the force arm formed by the plug rod 16 makes it easier to drive the locking screw 7 to rotate and lock the two well-shaped modules 1.

[0038] The insertion hole 14 is a threaded hole, and the top of the insertion rod 16 is set to a threaded section 16.1 that can be threadedly matched with the threaded hole, and the other part of the insertion rod 16 is a smooth rod section 16.2. After the bottom end of the insertion rod 16 passes through the insertion hole 14, the insertion rod 16 is in a state where the smooth rod section 16.2 faces upward by rotating the locking screw 7. In the process of pulling the insertion rod 16 to make the two well-shaped modules 1 close together, the threaded section 16.1 can prevent the insertion rod 16 from being pulled upward from the end 11, so as to ensure that it can be used as a stable fulcrum to move the well-shaped module 1. In the process of pulling the insertion rod 16, the insertion hole 14 is displaced on the smooth rod section 16.2, and the position of the insertion hole 14 on the smooth rod section 16.2 can be adjusted more conveniently according to the actual position of the well-shaped module 1, which is more convenient to operate. After the two tic-tac-toe modules 1 are close together and the locking screw 7 enters the groove 6 and is in a horizontal state, the threaded section 16.1 is moved away from the end 11 by rotating the locking screw 7. In this way, the insertion rod 16 can be frequently inserted into or withdrawn from the socket 14 in a relatively convenient manner during the process of pulling the insertion rod 16 to drive the locking screw 7 to rotate.

[0039] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A temporary cross brace with adjustable steps in a large-span tunnel, characterized in that: The invention comprises a tic-tac-toe module (1) and a screw adjustment section (2), wherein a plurality of the tic-tac-toe modules (1) are provided, and the plurality of tic-tac-toe modules (1) are installed one by one from both sides of the middle step arch foot inwards, and two rows of tic-tac-toe modules (1) are located in a straight line. The screw adjustment section (2) is arranged between the two rows of tic-tac-toe modules (1) and is used to apply pressure to the tic-tac-toe modules (1) on both sides so that the cross brace is stably connected to the middle step arch foot as a whole.

2. The adjustable step assembled temporary cross brace in a large-span tunnel according to claim 1 is characterized in that: The tic-tac-toe-shaped module (1) is formed by connecting four I-beams end to end in sequence, and the two grooves of the I-beams are distributed up and down.

3. The adjustable step assembled temporary cross brace in a large-span tunnel according to claim 1 is characterized in that: The two ends of the screw adjustment section (2) are detachably connected to the tic-tac-toe-shaped module (1), and the two tic-tac-toe-shaped modules (1) that are in contact with each other are detachably connected to each other.

4. The adjustable step assembled temporary cross brace in a large-span tunnel according to claim 3 is characterized in that: A first connecting plate (3) is fixedly mounted on both ends of one side of the tic-tac-toe module (1), and a second connecting plate (4) is fixedly mounted on both ends of the lead screw adjustment section (2). Through holes (5) for bolts to pass through are provided on the first connecting plate (3) and the second connecting plate (4), and the lead screw adjustment section (2) and the tic-tac-toe module (1) and the two tic-tac-toe modules (1) connected to each other are connected via the bolts.

5. The adjustable step assembled temporary cross brace in a large-span tunnel according to claim 1 is characterized in that: A groove (6) is provided at the top of one side of the tic-tac-toe module (1); a locking screw (7) is provided on the tic-tac-toe module (1); a locking screw sleeve (8) is threadedly sleeved at one end of the locking screw (7) and rotatably mounted on the tic-tac-toe module (1); the locking screw (7) can enter the groove (6) by swinging downward; a positioning ring (9) is provided at one end of the locking screw (7) away from the locking screw sleeve (8); and a positioning groove (10) for inserting the positioning ring (9) is provided on the inner side surface of the tic-tac-toe module (1) corresponding to the bottom end of the groove (6).

6. The adjustable step assembled temporary cross brace in a large-span tunnel according to claim 5, characterized in that: An end (11) is fixedly provided at one end of the locking screw (7) away from the locking screw sleeve (8); the positioning ring (9) is movably sleeved on the locking screw (7), and the positioning ring (9) is located between the end (11) and the locking screw sleeve (8).

7. The adjustable step assembled temporary cross brace in a large-span tunnel according to claim 6, characterized in that: The movable sleeve on the locking screw (7) is provided with a rod sleeve (12), and the rod sleeve (12) is located between the locking screw sleeve (8) and the positioning ring (9). The two sides of the top of the groove (6) are arranged to be outward-expanding inclined surfaces, the width of the groove (6) is arranged to be compatible with the outer diameter of the rod sleeve (12), and the bottom end of the groove (6) is arranged to be a semicircular structure compatible with the rod sleeve (12), and when the locking screw (7) is in a horizontal state, the rod sleeve (12) is located at the bottom end of the groove (6).

8. The step-adjustable assembled temporary cross brace in a large-span tunnel according to claim 6 is characterized in that: The end head (11) is in a cylindrical structure, a rotating ball (13) is rotatably mounted inside the end head (11), a plug hole (14) capable of being passed through by an insertion rod (16) is provided on the rotating ball (13), and through grooves (15) are provided on both sides of the end head (11).

9. The step-adjustable assembled temporary cross brace in a large-span tunnel according to claim 8, characterized in that: The insertion hole (14) is a threaded hole, the top end of the insertion rod (16) is configured as a threaded section (16.1) capable of threadably matching the threaded hole, and the rest of the insertion rod (16) is a bare rod section (16.2).

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