Tunnel secondary lining steel bar positioning device

Abstract

The utility model discloses a tunnel secondary lining steel bar positioning device which comprises a plurality of unit main bars, the unit main bars form two rows of outer side main bars and inner side main bars which are distributed in parallel, and transversely-arranged positioning angle steel is arranged outside the outer side main bars and the inner side main bars of the unit main bars. A plurality of notches in one-to-one correspondence with the unit main reinforcements are formed in the corresponding sides of the positioning angle steel, a same locking rod is jointly inserted between the corresponding ends of the positioning angle steel, locking nuts are connected to the outer portions of the two ends of the locking rod, swing rods are arranged at the two ends of the positioning angle steel, and the swing rods are connected with the locking rod. And a reinforcing block clamped with the outer end of the locking rod is arranged at the outer end of the swing rod. According to the tunnel secondary lining steel bar positioning device, secondary lining main steel bars can be stably positioned in the binding and concrete pouring process, longitudinal displacement is avoided, the construction quality is guaranteed, the workload of workers can be reduced, and the construction efficiency is improved.

Description

Technical Field

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

[0002] The secondary lining structure of a tunnel generally consists of two parts: concrete and steel bars. Among them, steel bars are a material used to more firmly connect and support concrete. Steel bars are very important in the secondary lining structure of a tunnel. The addition of steel bars can effectively improve the bearing capacity of concrete, extend its service life, and strengthen the overall structure of the secondary lining, preventing cracks and deformation during the use of the tunnel.

[0003] At present, the main reinforcement is a very important steel material in the construction process of the tunnel secondary lining. It is usually arranged in the concrete in a grid form. However, the precise positioning of the main reinforcement binding has always been a difficulty in construction quality control. The traditional method is to bind and position each main reinforcement in turn, but longitudinal displacement is easy to occur during the binding and concrete pouring process, which fails to meet the quality requirements. In addition, the binding and positioning process is labor-intensive, resulting in low construction efficiency. Utility Model Content

[0004] The purpose of the utility model is to provide a tunnel secondary lining steel bar positioning device to solve the problems raised in the above-mentioned background technology that the current tunnel secondary lining steel bars are prone to longitudinal displacement during the binding and concrete pouring process, fail to meet quality requirements, and the binding and positioning process is labor-intensive, resulting in low construction efficiency.

[0005] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a tunnel secondary lining steel bar positioning device, comprising a unit main bar, wherein the unit main bar is provided with a plurality of outer main bars and inner main bars which are arranged in two rows in parallel, and the outer sides of the outer main bars and the inner main bars of the unit main bars are provided with transversely arranged positioning angle steels, and the corresponding sides of the positioning angle steels are provided with a plurality of notches which correspond to the unit main bars one by one, and the same locking rod is interspersed between the corresponding ends of the positioning angle steels, the outer sides of the two ends of the locking rods are connected with locking nuts, and the two ends of the positioning angle steels are provided with swing rods, and the outer ends of the swing rods are provided with reinforcement blocks which are clamped with the outer ends of the locking rods.

[0006] Preferably, the reinforcement block is vertically distributed at the outer end of the swing rod, and the outer end of the reinforcement block is provided with an arc-shaped bayonet that matches the locking rod structure.

[0007] Preferably, a reinforcing shaft is inserted through the outer end of the reinforcing block via a threaded structure, and sockets that match the outer end structure of the reinforcing shaft are provided on the outer sides of both ends of the positioning angle steel.

[0008] Preferably, the outer sleeve of the reinforcement shaft is provided with a gasket, and the gasket is located in the gap between the reinforcement block and the positioning angle steel.

[0009] Preferably, both ends of the locking rod are provided with threaded structures on the outside, and both upper and lower ends of the positioning angle steel are provided with through holes matching with the locking rod.

[0010] Preferably, the inner wall of the notch is an arc-shaped structure, and the spacing between the notches is the same as the spacing between the unit main ribs.

[0011] Compared with the prior art, the utility model has the following beneficial effects: the tunnel secondary lining steel bar positioning device can firmly position the secondary lining main reinforcement during the binding and concrete pouring process without longitudinal displacement, thereby ensuring the construction quality, and helping to reduce the workload of the staff and improve the construction efficiency. The device is provided with positioning angle steels on both the outer main reinforcement and the inner main reinforcement of the unit main reinforcement. The positioning angle steels can be aligned and clamped on the outside of the unit main reinforcement by using a plurality of slots provided, and the ends of the two positioning angle steels can be firmly connected by means of a locking rod, a locking nut, a swing rod, a reinforcement block and a reinforcement shaft, so as to form a stable positioning structure for the unit main reinforcement. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] Figure 1 This is a schematic diagram of the structure of the second lining steel bar positioning device for a tunnel according to the utility model;

[0013] Figure 2 The utility model is a tunnel secondary lining steel bar positioning device Figure 1 The enlarged structural diagram at A in the middle;

[0014] Figure 3 This is a schematic diagram of the assembly structure of the positioning angle steel of the tunnel secondary lining steel bar positioning device of the utility model;

[0015] Figure 4 The utility model is a schematic diagram of the connection structure between the locking rod and the positioning angle steel of the tunnel secondary lining steel bar positioning device.

[0016] In the figure: 1. Main reinforcement of the unit; 2. Positioning angle steel; 3. Notch; 4. Locking rod; 5. Locking nut; 6. Rocker arm; 7. Reinforcement block; 8. Reinforcement shaft; 9. Socket; 10. Bushing; 11. Arc bayonet. DETAILED DESCRIPTION

[0017] 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.

[0018] See also Figure 1-3The utility model provides a technical solution: a tunnel secondary lining steel bar positioning device, comprising a unit main bar 1, the unit main bar 1 is a longitudinal main bar of the tunnel secondary lining and is also welded with a plurality of transverse main bars and reinforcing bars, the unit main bar 1 is provided with a plurality of outer main bars and inner main bars which are parallelly distributed in two rows, the outer side of the outer main bar and the inner side of the unit main bar 1 are both provided with transversely arranged positioning angle steels 2, the positioning angle steels 2 can be provided with a plurality of positioning angle steels 2 according to actual needs and arranged at appropriate positions at the binding place of the unit main bar 1, a plurality of notches 3 corresponding to the unit main bar 1 are opened on the corresponding side of the positioning angle steels 2, the positioning angle steels 2 can be processed and manufactured using the existing angle steels in the tunnel steel bar processing plant, and a suitable number of notches 3 are opened along the longitudinal direction according to the spacing of the unit main bar 1 The slot 3, the inner wall of the slot 3 is an arc-shaped structure, and the spacing between the slots 3 is the same as the spacing between the unit main reinforcements 1, and the same locking rod 4 is inserted between the corresponding ends of the positioning angle steels 2, and the outsides of both ends of the locking rod 4 are connected with locking nuts 5, and the two ends of the positioning angle steel 2 are rotatably connected with a swing rod 6 through a rotating shaft, and the outer end of the swing rod 6 is welded and fixed with a reinforcement block 7 that is clamped with the outer end of the locking rod 4. In this structure, when the outer main reinforcement and the inner main reinforcement of the unit main reinforcement 1 are tied together, the two positioning angle steels 2 can be placed at appropriate positions on the outside of the two sides thereof, and the positioning angle steel 2 can clamp a plurality of slots 3 one by one on the outside of the unit main reinforcement 1, and then the locking rod 4 is inserted into the corresponding ends of the two positioning angle steels 2 and the locking nuts 5 are fixed. The two ends of the locking rod 4 are turned into the outside to lock, and the swing rod 6 can be rotated at the end of the positioning angle steel 2 to clamp the reinforcement block 7 with the outer end of the locking rod 4 to reinforce the connection between the two ends of the locking rod 4 and the positioning angle steel 2, so that the two positioning angle steels 2 can form a stable positioning effect on the unit main reinforcement 1 as a whole, so that the unit main reinforcement 1 does not produce longitudinal displacement, which solves the problem that the unit main reinforcement 1 is prone to longitudinal displacement during the binding and pouring of concrete, resulting in failure to meet quality requirements, and makes the operation process of positioning the unit main reinforcement 1 more labor-saving for the staff, reduces the workload of binding and positioning the unit main reinforcement 1, and is conducive to improving the efficiency of construction. The reinforcement block 7 is vertically distributed at the outer end of the swing rod 6, and the outer end of the reinforcement block 7 is provided with a locking rod 4 structure, the inner wall of the arc bayonet 11 can be bonded with a magnetic sheet, when the swing rod 6 of this structure drives the reinforcement block 7 to rotate at the end of the positioning angle steel 2, the reinforcement block 7 can engage the arc bayonet 11 at the position corresponding to the end of the locking rod 4 to achieve a more stable clamping, and the magnetic sheet on the inner wall of the arc bayonet 11 can improve the firmness of the reinforcement block 7 during clamping, the outer end of the reinforcement block 7 is also interspersed with a reinforcement shaft 8 through a threaded structure, and the outer sides of the two ends of the positioning angle steel 2 are provided with a socket 9 that is consistent with the outer end structure of the reinforcement shaft 8. After the reinforcement block 7 of this structure is clamped with the locking rod 4, the reinforcement shaft 8 can pass through the outer end of the reinforcement block 7 and extend into the interior of the socket 9, so that the reinforcement shaft 8 can lock the reinforcement block 7.To further ensure the firmness of the reinforcement block 7 when it is clamped on the outer end of the locking rod 4, the outer sleeve of the reinforcement shaft 8 is provided with a cushion sleeve 10, and the cushion sleeve 10 is located in the gap between the reinforcement block 7 and the positioning angle steel 2. The cushion sleeve 10 of this structure can play a supporting role in the gap between the reinforcement block 7 and the positioning angle steel 2 to ensure the stability of the connection between the reinforcement shaft 8 and the positioning angle steel 2. The outer ends of the locking rod 4 are provided with threaded structures, and the upper and lower ends of the positioning angle steel 2 are provided with through holes that match the locking rod 4. The locking rod 4 of this structure can be connected to the ends of the positioning angle steel 2 by passing the two ends through the through holes on the positioning angle steel 2 and using the threaded structure to connect the locking nut 5 to achieve the effect of docking the ends of the positioning angle steel 2.

[0019] Working principle: When using the tunnel secondary lining steel bar positioning device, first, when the outer main reinforcement and the inner main reinforcement of the unit main reinforcement 1 are tied, the positioning angle steels 2 are arranged at appropriate positions on the outside of the two sides, and the positioning angle steels 2 are engaged with the outside of the unit main reinforcement 1 one by one using a plurality of notches 3, and then the two ends of the locking rod 4 are passed through the perforations on the positioning angle steel 2 and the locking nuts 5 are turned into the locking nuts 5 at both ends of the locking rod 4 through the threaded structure until the locking nuts 5 are turned into a position that fits the outer wall of the positioning angle steel 2 for tightening, and then the swing rod 6 is swung at the end of the positioning angle steel 2 in turn, and the swing rod 6 can drive the reinforcement block 7 to rotate until the reinforcement block 7 engages the arc-shaped bayonet 11 at the corresponding position of the end of the locking rod 4, and then the reinforcement shaft 8 is passed through the outer end of the reinforcement block 7 and extends into the interior of the insertion hole 9, and then the reinforcement block 7 can be firmly connected to the outer end of the locking rod 4, and the locking rod 4 will firmly connect the two positioning angle steels 2, so that the two positioning angle steels 2 will form a firm positioning for the unit main reinforcement 1 as a whole, thereby completing a series of work.

[0020] Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art may still modify the technical solutions described in the aforementioned embodiments, or make equivalent substitutions for some of the technical features therein. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention shall be included in the protection scope of the present invention.

Claims

1. A tunnel secondary lining reinforcement positioning device, comprising a unit main reinforcement (1), wherein the unit main reinforcement (1) is provided with a plurality of outer main reinforcements and inner main reinforcements arranged in two rows and distributed in parallel, and characterized in that: The outer sides of the outer main reinforcement and the inner main reinforcement of the unit main reinforcement (1) are both provided with transversely arranged positioning angle steels (2), and the corresponding side of the positioning angle steels (2) is provided with a plurality of notches (3) corresponding to the unit main reinforcement (1), and the corresponding ends of the positioning angle steels (2) are both interspersed with a common locking rod (4), the outer sides of both ends of the locking rod (4) are both connected with locking nuts (5), and the two ends of the positioning angle steel (2) are both provided with swing rods (6), and the outer ends of the swing rods (6) are provided with reinforcement blocks (7) clamped with the outer ends of the locking rods (4).

2. The tunnel secondary lining steel bar positioning device according to claim 1 is characterized in that: The reinforcement block (7) is vertically distributed at the outer end of the swing rod (6), and the outer end of the reinforcement block (7) is provided with an arc-shaped bayonet (11) that matches the structure of the locking rod (4).

3. The tunnel secondary lining steel bar positioning device according to claim 2 is characterized in that: The outer end of the reinforcement block (7) is also penetrated by a reinforcement shaft (8) via a threaded structure, and the outer sides of both ends of the positioning angle steel (2) are provided with insertion holes (9) that match the outer end structure of the reinforcement shaft (8).

4. The tunnel secondary lining steel bar positioning device according to claim 3 is characterized in that: The outer sleeve of the reinforcement shaft (8) is provided with a gasket (10), and the gasket (10) is located in the gap between the reinforcement block (7) and the positioning angle steel (2).

5. The tunnel secondary lining steel bar positioning device according to claim 1, characterized in that: The exterior of both ends of the locking rod (4) is provided with a threaded structure, and the upper and lower ends of the positioning angle steel (2) are provided with through holes that match the locking rod (4).

6. The tunnel secondary lining steel bar positioning device according to claim 1, characterized in that: The inner wall of the notch (3) is an arc-shaped structure, and the spacing between the notches (3) is the same as the spacing between the unit main ribs (1).

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