Pipe gallery tunnel inverted arch steel bar fixing support

Abstract

The utility model relates to the technical field of underground pipe gallery construction, and discloses a pipe gallery tunnel inverted arch steel bar fixing support which comprises a supporting frame located above an inverted arch steel bar, and the two ends of the supporting frame are used for abutting against the inner side wall of a pipe gallery tunnel. The upper ends of the hanging rods are detachably connected with the supporting frame, and the lower ends of the hanging rods are used for being connected with annular transverse inverted arch steel bars. The supporting frame is erected above the inverted arch steel bars, the lower ends of the hanging rods are connected with the annular transverse inverted arch steel bars, the annular transverse inverted arch steel bars at different positions can be positioned by adjusting the heights of the hanging rods, and due to the fact that the hanging rods can position the annular transverse inverted arch steel bars at the different positions in the transverse direction and the longitudinal direction, the positioning accuracy of the annular transverse inverted arch steel bars is improved. Therefore, the possibility of deformation of the reinforcing steel bars in the middle due to the gravity of the reinforcing steel bars is reduced, and the phenomenon that the reinforcing steel bars are exposed after concrete is poured is avoided.

Description

Technical Field

[0001] The utility model relates to the technical field of underground pipe gallery construction, in particular to a pipe gallery tunnel inverted arch steel bar fixing bracket. Background Art

[0002] In the construction of pipeline tunnels, the invert is a key structural part that bears great pressure. The accuracy and stability of its steel bar arrangement are directly related to the quality of the project. The circular transverse invert steel bars need to be tied at the construction site, and the invert steel bars are prone to warping when connected in sections.

[0003] The patent with the announcement number CN211474139U discloses a pipe gallery tunnel inverted arch steel bar fixing bracket. The patent adds temporary columns to the inverted arch steel bars at the precast end, adds cross steel bars between the upper and lower steel bars, and constructs them in sections in sequence, so as to fix the shape and spatial position of the steel cage on the waterproofing membrane without destroying the inverted arch steel bars, avoid the inverted arch steel bars from warping up, and effectively waterproof. However, the two ends of the upper and lower steel bars in the patent solution are jointly supported by the steel bars and columns reserved outside the casting area. Due to the long casting section, the upper steel bars in the middle are easily deformed under the action of gravity and then fit the waterproofing membrane, resulting in exposed steel bars in the poured concrete, affecting the stability of the concrete structure.

[0004] In view of this, designing a new type of pipe gallery tunnel invert arch steel bar fixing bracket, which can simultaneously position and support multiple parts of the invert arch steel bars of the current pouring section, avoid exposed steel bars after pouring concrete, and improve the stability of the concrete structure, has become a technical problem that technical personnel in this field urgently need to solve. Utility Model Content

[0005] The utility model aims to provide a pipe gallery tunnel inverted arch steel bar fixing bracket to overcome the above-mentioned shortcomings.

[0006] In order to achieve the above purpose, the technical solution of the utility model is:

[0007] The steel bar fixing bracket of the tunnel invert includes:

[0008] A support frame located above the inverted arch reinforcement, with two ends of the support frame being used to abut against the inner wall of the tunnel of the pipe gallery; and

[0009] A plurality of hangers are distributed in a rectangular array, the upper ends of the hangers are detachably connected to the support frame, and the lower ends of the hangers are used to connect to the annular transverse inverted arch reinforcement.

[0010] Furthermore, the support frame comprises:

[0011] A central support frame, wherein both longitudinal sides of the central support frame are hinged with a turning frame;

[0012] Two side support frames are located on both lateral sides of the central support frame, one end of each side support frame is hinged to the central support frame, and the lateral sides of the flip frame are selectively connected to one end of the two side support frames to achieve that the two side support frames are located on the same straight line.

[0013] Furthermore, the central support frame and / or the side support frame are provided with multiple connecting plates along the horizontal direction, and the connecting plates are provided with connecting through holes. The suspension rod is a first bolt, which passes through the connecting through holes and is threadedly connected to two nuts, and the two nuts are respectively located on the upper and lower sides of the connecting plates.

[0014] Furthermore, the head of the first bolt is located below the screw rod of the first bolt, and the first bolt is connected to the annular transverse inverted arch reinforcement by binding through the head of the first bolt.

[0015] Furthermore, the left and right sides of the turnover frame are detachably connected to one end of the two side support frames respectively.

[0016] Furthermore, a plurality of telescopic rod assemblies are installed at the other ends of the two side support frames.

[0017] Furthermore, the telescopic rod assembly comprises:

[0018] A movable sleeve fixedly connected to the other end of the side support frame;

[0019] Telescopic rods slidably connected in a one-to-one correspondence within the movable sleeve;

[0020] An anti-skid pad fixedly connected to an end of the telescopic rod away from the side support frame; and

[0021] A brake member is used for selectively fixing the telescopic rod and the movable sleeve.

[0022] Furthermore, the outer wall of the telescopic rod is provided with a plurality of blind holes, and the plurality of blind holes are arranged at intervals along the length direction of the telescopic rod;

[0023] Positioning through holes are arranged on the side wall of the movable sleeve;

[0024] The brake member comprises:

[0025] a brake rod slidably connected to the positioning through hole, the brake rod selectively plugging into one of the blind holes; and

[0026] An elastic member is used to drive the brake rod to move toward the telescopic rod.

[0027] Furthermore, a limiting ring is fixedly connected to the circumferential side of the middle part of the brake rod, the elastic member is a compression spring, the compression spring is sleeved on the circumferential side of the limiting ring, the compression spring and the limiting ring are located inside the movable sleeve, and the two ends of the compression spring are respectively connected to the limiting ring and the inner side wall of the movable sleeve.

[0028] Furthermore, one end of the brake rod away from the limiting ring passes through the through hole and is connected to a handle, and is fixedly connected to a positioning block, and the handle is in a "V"-shaped structure.

[0029] Compared with the prior art, the utility model has at least the following advantages:

[0030] The support frame is erected above the inverted arch steel bars, and the lower end of the hanger is connected to the annular transverse inverted arch steel bars. The height of the hanger is adjusted to position the annular transverse inverted arch steel bars at different positions. Since the hanger can position the annular transverse inverted arch steel bars at different positions in the transverse and longitudinal directions, the possibility of deformation of the steel bars in the middle part due to their own gravity is reduced, thereby solving the problem of exposed steel bars after pouring concrete. BRIEF DESCRIPTION OF THE DRAWINGS

[0031] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative labor.

[0032] Figure 1 This is a structural schematic diagram of the utility model of the pipe gallery tunnel inverted arch steel bar fixing bracket in use state;

[0033] Figure 2 It is a structural schematic diagram of another perspective of the utility model when the utility model tunnel inverted arch steel bar fixing bracket is in use;

[0034] Figure 3 It is a structural schematic diagram of the utility model of the pipe gallery tunnel inverted arch steel bar fixing bracket in the storage state;

[0035] Figure 4 It is a structural schematic diagram of the telescopic rod assembly of the utility model;

[0036] Figure 5 It is a cross-sectional view of the telescopic rod assembly of the utility model;

[0037] Figure 6 For this utility model Figure 5 A partial enlarged view of area A.

[0038] Figure numerals: 1. center support frame; 2. flip frame; 3. side support frame; 4. connecting plate; 5. connecting through hole; 6. first bolt; 7. nut; 8. second bolt; 9. movable sleeve; 10. telescopic rod; 11. anti-slip pad; 12. blind hole; 13. positioning through hole; 14. brake rod; 15. elastic member; 16. limiting ring; 17. handle; 18. positioning block. DETAILED DESCRIPTION

[0039] 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.

[0040] In order to make the above-mentioned objects, features and advantages of the present invention more obvious and easy to understand, the present invention is further described in detail below in conjunction with the accompanying drawings and specific implementation methods.

[0041] Reference Figure 1-2 The utility model provides a fixed support for the inverted arch steel bars of the tunnel of the tunnel, which is used to provide an upward pulling force to the inverted arch steel bars of the tunnel of the tunnel, and can achieve the effect of positioning and supporting the inverted arch steel bars at multiple locations, so as to reduce the deformation of the inverted arch steel bars in the middle position due to their own gravity, thereby reducing the situation of exposed steel bars after the later pouring of concrete. The cross-section of the tunnel of the tunnel is generally circular or horseshoe-shaped. In the utility model, the longitudinal direction along the length of the tunnel of the tunnel is defined as the longitudinal direction, and the transverse direction along the width of the tunnel is defined as the transverse direction. The specific structure of the utility model includes a support frame and a hanger detachably connected to the support frame. The support frame is located above the inverted arch steel bars. By utilizing the characteristics of the cross-section of the tunnel of the tunnel, the two ends of the support frame can be erected on the inner wall of the tunnel of the tunnel. There are a plurality of hangers, which are distributed in a rectangular array. The hangers are arranged in the vertical direction, and the upper ends of the hangers are detachably connected to the support frame. The lower ends of the hangers are used to connect the annular transverse inverted arch steel bars. The transverse inverted arch steel bars are connected to the longitudinal steel bars by binding, and positioning steel bars are welded between the longitudinal steel bars of different layers.

[0042] The support frame is erected above the inverted arch steel bars, and the lower end of the hanger is connected to the annular transverse inverted arch steel bars. The height of the hanger is adjusted to position the annular transverse inverted arch steel bars at different positions. Since the hanger can position the annular transverse inverted arch steel bars at different positions in the transverse and longitudinal directions, the possibility of deformation of the steel bars in the middle part due to their own gravity is reduced, thereby solving the problem of exposed steel bars after pouring concrete.

[0043] It should be noted that after the concrete pouring is completed and the concrete is finally set, the hanging rod exposed outside the concrete needs to be cut. At this time, the support frame can be moved to the next section to be poured, thereby achieving the technical effect of recycling. It should be understood that multiple support frames can be set longitudinally in the same section of the invert concrete pouring section, and the hanging rod should be set according to the actual usage.

[0044] Preferably, in order to facilitate the storage of the support frame, the support frame of the utility model is set as a foldable structure. The support frame includes a central support frame 1, a flip frame 2 and a side support frame 3. Among them: there are two flip frames 2, and the upper end of the flip frame 2 is provided with a connecting ear. The two flip frames 2 are respectively arranged on the longitudinal sides of the central support frame 1, and the flip frame 2 is hinged to the lower end of the central support frame 1 through the connecting ear; there are two side support frames 3, and the two side support frames 3 are respectively located on the lateral sides of the central support frame 1, one end of the side support frame 3 is hinged to the central support frame 1, and the lateral sides of the flip frame 2 are selectively connected to one end of the two side support frames 3, so as to realize that the two side support frames 3 are located on the same straight line.

[0045] In a specific embodiment of the present utility model: the left and right sides of the flip frame 2 are detachably connected to one end of the two side support frames 3 respectively, locking holes are provided at both ends of the flip frame 2, and a threaded hole used in conjunction with the through hole is provided at one end of the side support frame 3. The second bolt 8 passes through the locking hole and is threadedly connected to the threaded hole, so that the flip frame 2 and the side support frame 3 can be fixed.

[0046] Reference Figure 1-2 As shown, the utility model tunnel inverted arch steel bar fixing bracket is in the unfolded state, that is, in the use state. At this time, one end of the side support frame 3 is fixedly connected to the flip frame 2 through the second bolt 8, and the two side support frames 3 and the flip frame 2 are located in the same straight line. At this time, the side support frame 3 can be set up on the inner wall of the tunnel. Figure 3 As shown, the tunnel inverted arch steel bar fixing bracket of the utility model is in a folded state, that is, in an unused state. The folded state can be achieved by removing the second bolt 8 and the suspension rod, and flipping the two flip frames 2 in a direction close to each other, and then flipping the two side support frames 3 in a direction close to each other. By switching between the two forms, the flip frame 2 can be easily transported and erected in the tunnel corridor.

[0047] Reference Figure 2, a plurality of connecting plates 4 are arranged along the horizontal direction on the central support frame 1 and / or the side support frame 3, and a connecting through hole 5 is arranged on the connecting plate 4, and the suspension rod is a first bolt 6, and the first bolt 6 passes through the connecting through hole 5 and is threadedly connected with two nuts 7, and the two nuts 7 are respectively located at the upper and lower sides of the connecting plate 4. By setting two nuts 7, the first bolt 6 can be bidirectionally locked and the height of the first bolt 6 can be adjusted. In a specific embodiment of the utility model, the head of the first bolt 6 is located below the screw rod of the first bolt 6, and the first bolt 6 is connected to the annular transverse inverted arch reinforcement by binding through its head.

[0048] Refer again Figure 1-2 A plurality of telescopic rod assemblies are installed at the other ends of the support frames 3 on both sides. The telescopic rod assemblies can achieve a telescopic effect and can be erected on the inner walls of tunnels of different sizes. The arrangement of the telescopic rod assemblies is beneficial to increasing the scope of application of the utility model.

[0049] Reference Figure 4-6 The telescopic rod assembly includes a movable sleeve 9, a telescopic rod 10, an anti-skid pad 11 and a brake. Among them: one end of the movable sleeve 9 is fixedly connected to the other end of the side support frame 3, and the other end of the movable sleeve 9 is provided with an opening; the telescopic rod 10 is provided one-to-one with the movable sleeve 9, and the telescopic rod 10 is slidably connected with the movable sleeve 9, and the telescopic rod 10 can be embedded in the movable sleeve 9 or pass through the movable sleeve 9; the anti-skid pad 11 is fixedly connected to the end of the telescopic rod 10 away from the side support frame 3; the brake is used to selectively realize the fixing of the telescopic rod 10 and the movable sleeve 9.

[0050] Specifically, the outer wall of the telescopic rod 10 is provided with a plurality of blind holes 12, and the plurality of blind holes 12 are arranged at equal intervals along the length direction of the telescopic rod 10; a positioning through hole 13 is arranged on the side wall of the movable sleeve 9. The brake member includes a brake rod 14 and an elastic member 15, the brake rod 14 is slidably connected in the positioning through hole 13, and the brake rod 14 is selectively plugged into one of the blind holes 12; the elastic member 15 is used to drive the brake rod 14 to move toward the telescopic rod 10.

[0051] A limit ring 16 is fixedly connected to the middle circumference of the brake rod 14, and the elastic member 15 is a compression spring, which is sleeved on the circumference of the limit ring 16. The compression spring and the limit ring 16 are located inside the movable sleeve 9, and the two ends of the compression spring are respectively connected to the inner wall of the limit ring 16 and the movable sleeve 9.

[0052] Optionally, the end of the brake rod 14 away from the limiting ring 16 passes through the through hole and is connected to a handle 17, and is fixedly connected to a positioning block 18, and the handle 17 is in a "V"-shaped structure. By pressing the handle 17, the positioning block 18 moves upward, and the brake rod 14 can be disengaged from the blind hole 12. At this time, the telescopic rod 10 can slide in the movable sleeve 9. When the position of the telescopic rod 10 in the movable sleeve 9 is adjusted, the handle 17 is stopped, and the brake rod 14 moves downward under the action of the compression spring and is embedded in one of the blind holes 12 again to achieve the locking of the telescopic rod 10 and the movable sleeve 9, thereby achieving the telescopic effect of the telescopic rod 10.

[0053] In the description of the present invention, it should be understood that the terms "longitudinal", "lateral", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside" and "outside" etc., indicating orientations or positional relationships, are based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present invention.

[0054] The embodiments described above are only descriptions of the preferred methods of the present invention, and are not intended to limit the scope of the present invention. Without departing from the design spirit of the present invention, various modifications and improvements made to the technical solutions of the present invention by ordinary technicians in this field should fall within the protection scope determined by the claims of the present invention.

Claims

1. A steel bar fixing bracket for an inverted arch of a pipe gallery tunnel, characterized in that: include: A support frame located above the inverted arch reinforcement, with two ends of the support frame being used to abut against the inner wall of the pipe gallery tunnel; as well as A plurality of suspension rods distributed in a rectangular array, wherein the upper ends of the suspension rods are detachably connected to the support frame, and the lower ends of the suspension rods are used to connect to the annular transverse inverted arch reinforcement; The support frame comprises: A central support frame (1), wherein both longitudinal sides of the central support frame (1) are hingedly connected with a turning frame (2); Two side support frames (3) are located on both lateral sides of the central support frame (1), one end of each side support frame (3) is hinged to the central support frame (1), and the lateral sides of the flip frame (2) are selectively connected to one end of each side support frame (3) to ensure that the two side support frames (3) are located on the same straight line.

2. The pipe gallery tunnel inverted arch steel bar fixing bracket according to claim 1 is characterized in that: The central support frame (1) and / or the side support frame (3) are provided with a plurality of connecting plates (4) in a horizontal direction, the connecting plates (4) are provided with connecting through holes (5), the suspension rod is a first bolt (6), the first bolt (6) passes through the connecting through holes (5) and is threadedly connected to two nuts (7), and the two nuts (7) are respectively located on the upper and lower sides of the connecting plate (4).

3. The pipe gallery tunnel inverted arch steel bar fixing bracket according to claim 2 is characterized in that: The head of the first bolt (6) is located below the screw rod of the first bolt (6), and the first bolt (6) is connected to the annular transverse inverted arch reinforcement by binding through its head.

4. The pipe gallery tunnel inverted arch steel bar fixing bracket according to claim 3 is characterized in that: The left and right sides of the turnover frame (2) are respectively detachably connected to one end of the two side support frames (3).

5. The pipe gallery tunnel inverted arch steel bar fixing bracket according to claim 1, characterized in that: A plurality of telescopic rod assemblies are installed at the other ends of the two side support frames (3).

6. The pipe gallery tunnel inverted arch steel bar fixing bracket according to claim 5, characterized in that: The telescopic rod assembly comprises: A movable sleeve (9) fixedly connected to the other end of the side support frame (3); Telescopic rods (10) slidably connected in a one-to-one correspondence within the movable sleeve (9); an anti-slip pad (11) fixedly connected to an end of the telescopic rod (10) away from the side support frame (3); and A brake component for selectively fixing the telescopic rod (10) and the movable sleeve (9).

7. The pipe gallery tunnel inverted arch steel bar fixing bracket according to claim 6, characterized in that: The outer wall of the telescopic rod (10) is provided with a plurality of blind holes (12), and the plurality of blind holes (12) are arranged at intervals along the length direction of the telescopic rod (10); A positioning through hole (13) is arranged on the side wall of the movable sleeve (9); The brake member comprises: a brake rod (14) slidably connected to the positioning through hole (13), the brake rod (14) selectively plugging into one of the blind holes (12); and An elastic member (15), wherein the elastic member (15) is used to drive the brake rod (14) to move toward the telescopic rod (10).

8. The pipe gallery tunnel inverted arch steel bar fixing bracket according to claim 7, characterized in that: A limiting ring (16) is fixedly connected to the middle circumference of the brake rod (14); the elastic member (15) is a compression spring, which is sleeved on the circumference of the limiting ring (16); the compression spring and the limiting ring (16) are located inside the movable sleeve (9), and the two ends of the compression spring are respectively connected to the limiting ring (16) and the inner side wall of the movable sleeve (9).

9. The pipe gallery tunnel inverted arch steel bar fixing bracket according to claim 8, characterized in that: One end of the brake rod (14) away from the limiting ring (16) passes through the through hole and is connected to a handle (17), and is fixedly connected to a positioning block (18), wherein the handle (17) is in a "V"-shaped structure.

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