Monolithic track bed track bent frame tool for single-track tunnel

Abstract

The utility model provides a single-track tunnel monolithic track bed track bent frame tool which comprises a plurality of bent frames evenly distributed in the extending direction of a tunnel, two limiting stations detachably connected with a guide rail are arranged above each bent frame, the two ends of each bent frame are detachably connected with adjusting blocks respectively, and the adjusting blocks are connected with the adjusting blocks respectively. The end, away from the bent frame, of the adjusting block is fixed to a tunnel arch foot through a horizontal adjusting piece, and a longitudinal adjusting piece corresponding to the tunnel arch bottom is arranged on the adjusting block. The bent frame fixes the guide rails to be constructed through the limiting station, the two guide rails are kept parallel, the horizontal adjusting piece and the longitudinal adjusting piece are arranged on the adjusting blocks at the two ends of the bent frame, adjustment can be conducted in a tunnel according to actual requirements, and therefore space occupation of a traditional guide rail is reduced, and the construction efficiency of a monolithic track bed of a single-track tunnel is improved; it is ensured that track precision meets construction and design requirements, and the purposes of reducing construction cost and improving economic benefits are achieved.

Description

Technical Field

[0001] The utility model belongs to the technical field of tunnel construction, and in particular relates to a track frame tooling for an integral roadbed of a single-track tunnel. Background Art

[0002] In the construction of single-track tunnel track bed, due to the small tunnel space, the existing commonly used construction method mainly uses ordinary transport vehicles and manual labor to transport materials to the tunnel construction area. Due to the limited tunnel space, the processes cannot be carried out synchronously, and the construction efficiency cannot meet the progress requirements. Therefore, it is necessary to provide an improved technical solution to address the shortcomings of the above-mentioned existing technologies. Utility Model Content

[0003] The purpose of the utility model is to overcome the above-mentioned deficiencies in the prior art, and the utility model provides a track frame fixture for an integral roadbed of a single-track tunnel.

[0004] In order to achieve the above purpose, the present invention provides the following technical solutions:

[0005] A single-track tunnel integral track frame fixture, the frame fixture includes multiple frames evenly distributed along the extension direction of the tunnel, two limit stations are provided above each frame, each of which is connected to a guide rail in a detachable manner, and adjustment blocks are respectively connected at both ends of the frame in a detachable manner. The end of the adjustment block away from the frame is fixed to the tunnel arch foot through a horizontal adjustment piece, and a longitudinal adjustment piece corresponding to the tunnel arch bottom is provided on the adjustment block.

[0006] Preferably, the limiting position is a notch adapted to the cross section of the guide rail, and positioning pieces corresponding to the web of the guide rail are provided on both sides of the notch.

[0007] Preferably, a pad that matches the web of the guide rail is provided at the end of the positioning member.

[0008] Preferably, the main body of the regulating block is a box-shaped or groove-shaped structure, and the ends of the regulating block are correspondingly connected to the ends of the rack through connecting plates.

[0009] Preferably, an articulated seat is provided at one end of the adjustment block away from the bent frame, one end of the horizontal adjustment member is hinged to the articulated seat, and the other end is hinged to an anchor at the tunnel arch foot.

[0010] Preferably, the horizontal adjustment member is a flower basket pull rod.

[0011] Preferably, the longitudinal adjustment member is a stud assembled along the longitudinal thread in the middle of the adjustment block.

[0012] Preferably, a plurality of spaced sleepers are provided under each guide rail, and the sleepers are cast as one piece with the tunnel roadbed.

[0013] Preferably, conveyor rails are provided on both sides of the tunnel, and a gantry for lifting the rack tooling is provided on the conveyor rails.

[0014] Beneficial effects: The guide rail to be constructed is fixed by the frame through the limit station, and the two sections of the guide rail are kept parallel. Horizontal adjustment parts and longitudinal adjustment parts are set on the adjustment blocks at both ends of the frame, which can be adjusted in the tunnel according to actual needs, thereby reducing the space occupied by traditional guide rails, improving the overall roadbed construction efficiency of single-track tunnels, ensuring that the track accuracy meets the construction and design requirements, and achieving the purpose of reducing construction costs and improving economic benefits. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] The drawings constituting part of this application are intended to provide a further understanding of the present invention. The exemplary embodiments of the present invention and their descriptions are intended to explain the present invention and do not constitute an improper limitation of the present invention.

[0016] Figure 1 This is a schematic diagram of the connection between the rack and the guide rail in the specific embodiment provided by the utility model;

[0017] Figure 2 This is a schematic diagram of the guide rail positioning state in a specific embodiment provided by the present utility model;

[0018] Figure 3 This is a simplified structural diagram of the adjustment block in a specific embodiment provided by the utility model;

[0019] Figure 4 This is a schematic diagram of the assembly of the longitudinal adjustment member in the specific embodiment provided by the utility model;

[0020] Figure 5 for Figure 2 Enlarged view of point A in the middle;

[0021] Figure 6 for Figure 2 Enlarged view of point B in the middle.

[0022] In the figure: 1. Frame; 2. Guide rail; 3. Sleeper; 4. Gantry; 5. Roadbed; 6. Longitudinal adjustment piece; 7. Horizontal adjustment piece; 8. Adjustment block; 9. Articulated seat; 10. Assembly block; 11. Spacer block. DETAILED DESCRIPTION

[0023] The following is a clear and complete description of the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field are within the scope of protection of the present invention.

[0024] In the description of the present invention, the terms "longitudinal", "transverse", "upper", "lower", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", etc., indicating directions or positional relationships, are based on the directions or positional relationships shown in the accompanying drawings. They are only for the convenience of describing the present invention and do not require that the present invention must be constructed and operated in a specific direction. Therefore, they should not be understood as limitations on the present invention. The terms "connected" and "connected" used in the present invention should be understood in a broad sense. For example, they can be fixed connections or detachable connections; they can be directly connected or indirectly connected through intermediate components. For ordinary technicians in this field, the specific meanings of the above terms can be understood according to specific circumstances.

[0025] The present invention will be described in detail below with reference to the accompanying drawings and in combination with embodiments. It should be noted that, in the absence of conflict, the embodiments and features in the embodiments of the present invention can be combined with each other.

[0026] like Figure 1-6 As shown, a single-track tunnel integral roadbed 5 track frame fixture, each cycle guide rail 2 is installed and positioned by a group of frame 1 fixtures, and the frame 1 fixture corresponding to a cycle guide rail 2 includes multiple frames 1 evenly distributed along the extension direction of the tunnel, and the frame 1 is any one of I-beams, channel steels or square steels. The length of each frame 1 is greater than the spacing between the two guide rails 2 of the roadbed 5 track, and two limit stations that are respectively connected to the guide rails 2 in a detachable manner are provided above the frame 1. The limit stations are used to clamp and fix the guide rails 2 to limit the track gauge between the guide rails 2. Adjustment blocks 8 are respectively connected to the two ends of the frame 1 in a detachable manner. The end of the adjustment block 8 away from the frame 1 is fixed to the tunnel arch foot by a horizontal adjustment member 7. The horizontal adjustment member 7 is used to adjust the guide rail 2 in the horizontal direction to ensure that the guide rail 2 is laid along the preset path. A longitudinal adjustment member 6 corresponding to the tunnel arch bottom is provided on the adjustment block 8, which can adjust the guide rail 2 longitudinally to ensure that the guide rail 2 is laid according to the preset elevation.

[0027] In an optional embodiment, the limit station is a notch that is adapted to the cross-section of the guide rail 2. The notch is a directional opening that is open at the top. Positioning members corresponding to the webs of the guide rail 2 are provided on both sides of the notch. The positioning members fix the webs on both sides of the guide rail 2 along the length direction of the rack 1. The width of the notch can be larger than the guide rail 2, so that the spacing of the guide rail 2 can be adjusted by the positioning members.

[0028] In an optional embodiment, the positioning member is preferably a bolt, and positioning plates perpendicular to the length direction of the rack 1 are provided on both sides of the notch, and screw holes are provided on the positioning plates. The bolts are assembled on the positioning plates along the length direction of the rack 1, and the end of the positioning member is rotatably connected to a pad 11 that is adapted to the web of the guide rail 2. The shape of the pad 11 is adapted to the web of the guide rail 2, so that the upper and lower wing plates of the guide rail 2 can be blocked for longitudinal positioning.

[0029] After the track bed 5 is constructed, the locking of the positioning piece is released, and then the bent frame 1 is removed and the guide rail 2 of the next cycle is constructed.

[0030] The main body of the adjustment block 8 is a box-shaped or groove-shaped structure. Specifically, the outer contour of the cross section of the adjustment block 8 is adapted to the rack 1. The end of the adjustment block 8 is connected to the end of the rack 1 through a connecting plate. Accordingly, the end of the rack 1 is provided with a corresponding connecting plate, and the connecting plates at the ends of the rack 1 and the adjustment block 8 are fixed by bolts.

[0031] In an optional embodiment, an articulated seat 9 is provided at one end of the adjustment block 8 away from the frame 1. The articulated seat 9 includes a base plate fixed to the end of the adjustment block 8 and two articulated plates extending parallel to the length direction of the adjustment block 8. One end of the horizontal adjustment member 7 extends into the articulated seat 9 and is hinged through a hinge shaft, and the other end is hinged to an anchor at the tunnel arch foot, and the anchor is fixed to the bottom of the tunnel by embedded bolts or anchor bolts.

[0032] The horizontal adjustment member 7 is a basket pull rod, including an adjustment stud and a screw tube. One end of the two adjustment studs is respectively provided with a reaming hole for hinge connection, and the other end is correspondingly connected to the two ends of the screw, and the threads at the two ends of the screw are opposite to each other.

[0033] In an optional embodiment, the longitudinal adjustment member 6 is a stud and is assembled in the middle of the adjustment block 8 along the longitudinal thread.

[0034] Optionally, a longitudinally extending assembly block 10 is fixed to the middle of the adjustment block 8. The assembly block 10 is fixed to the adjustment block 8 by welding, and the stud is threadedly assembled into the assembly block 10. In this embodiment, the main body of the adjustment block 8 is a square trough with an opening facing downward, which is welded from three steel plates. A sealing steel plate is provided below the end of the adjustment block 8 near the bent frame 1. Where the sealing steel plate extends to the longitudinal adjustment member 6, an inner support plate corresponding to the sealing steel plate is provided inside the adjustment block 8. The inner support plate is used to weld and secure the assembly block 10.

[0035] Optionally, the assembly block 10 is a solid structure, and the shape of the assembly block 10 is adapted to the inner cavity of the adjustment block 8. A screw hole extending longitudinally is provided in the middle. The side of the assembly block 10 close to the rack 1 is hinged to the inside of the assembly block 10 through a hinge shaft, and an adjusting bolt extending along the length direction of the adjustment block 8 is provided on the hinge seat 9. After passing through the hinge seat 9, the adjusting bolt abuts against the side of the assembly block 10 away from the rack 1. The adjusting bolt is used to fix the assembly block 10 to maintain its angle. A plurality of locking holes are provided on the side wall of the adjustment block 8. After passing through the locking holes, a plurality of locking bolts abut against the side wall of the assembly block 10 to assist in locking the angle of the longitudinal adjustment member 6. Furthermore, the angle of the assembly block 10 can be fine-tuned. Specifically, adjusting bolts corresponding to the assembly block 10 are provided above and on the sides of the adjustment block 8, so that the assembly block 10 is driven by the adjusting bolts in the up and down directions to adjust or limit the angle. The angle of the assembly block 10 can be fine-tuned by adjusting the locking bolts, so that the longitudinal adjustment member 6 maintains longitudinal contact with the tunnel floor, and a waist-shaped hole corresponding to the stud is provided on the upper wall of the adjustment block 8 to meet the needs of the stud angle change.

[0036] In an optional embodiment, a plurality of spaced sleepers 3 are provided under each guide rail 2. The sleepers 3 are prefabricated concrete parts and have embedded reinforcement bars fixed to the roadbed 5. The sleepers 3 and the tunnel roadbed 5 are cast as one.

[0037] There are conveyor rails on both sides of the tunnel, and there are gantries 4 on the conveyor rails for lifting the rack 1. There are multiple gantries 4, which are evenly distributed and lift the rack 1. Then, the rack 1 is lifted to the designated position and cast. After the casting is completed, the rack 1 is removed to install the next cycle guide rail 2.

[0038] During the specific construction, according to the tunnel track layout, the spacing between each track frame 1 is 6.25m, and multiple track frames 1 are assembled. The construction length of each cycle is adapted to the length of the corresponding guide rail 2. After the track bed 5 is cured for 24 hours, the track frames 1 can be removed and recycled. The specific operation is as follows:

[0039] Each track frame 1 is assembled at a dedicated site outside the tunnel. The track bed 5 reinforcement can be pre-fabricated outside the tunnel, transported inside the tunnel for lashing, and then transported by truck. The track frame 1 is lifted by a gantry crane and transported to the laying site for rough positioning. Multiple track frames are connected to form a track and then fine-tuned. When the track frame 1 meets the required accuracy, the longitudinal adjustment members 6 and horizontal adjustment members 7 are tightened. Centralized mixing is performed using an existing mixing system, transported by concrete tankers, pumped into molds by concrete pumps, and compacted with insert-type high-frequency vibrators. After the track bed 5 concrete has been cured for 24 hours, the track frame 1 is removed for the next construction cycle. Data measurement is performed using a fine-tuning measurement system composed of a total station and a track inspection trolley system.

[0040] The above are only preferred embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principles of the present invention are within the scope of protection of the pending claims of the present invention.

Claims

1. A track frame fixture for a single-track tunnel integral roadbed, characterized in that: The rack tooling includes multiple racks evenly distributed along the extension direction of the tunnel. Two limit stations are provided above each rack, which are respectively connected to the guide rails in a detachable manner. The two ends of the rack are respectively connected to adjustment blocks in a detachable manner. The end of the adjustment block away from the rack is fixed to the tunnel arch foot through a horizontal adjustment piece, and a longitudinal adjustment piece corresponding to the tunnel arch bottom is provided on the adjustment block.

2. The single-track tunnel integral roadbed track frame fixture according to claim 1 is characterized in that: The limiting position is a notch adapted to the cross section of the guide rail, and positioning pieces corresponding to the web of the guide rail are provided on both sides of the notch.

3. The single-track tunnel integral roadbed track frame fixture according to claim 2 is characterized in that: The end of the positioning piece is provided with a pad which is matched with the web of the guide rail.

4. The single-track tunnel integral roadbed track frame fixture according to claim 1, characterized in that: The main body of the regulating block is a box-shaped or groove-shaped structure, and the ends of the regulating block are correspondingly connected to the ends of the rack through connecting plates.

5. The single-track tunnel integral roadbed track frame fixture according to claim 4 is characterized in that: An end of the adjustment block away from the bent frame is provided with a hinge seat, one end of the horizontal adjustment piece is hinged to the hinge seat, and the other end is hinged to an anchor piece at the tunnel arch foot.

6. The single-track tunnel integral roadbed track frame fixture according to claim 5, characterized in that: The horizontal adjustment member is a flower basket pull rod.

7. The single-track tunnel integral track bed rail frame fixture according to claim 4, characterized in that: The longitudinal adjustment member is a stud assembled along the longitudinal thread in the middle of the adjustment block.

8. The single-track tunnel integral roadbed track frame fixture according to claim 1, characterized in that: A plurality of spaced sleepers are provided under each guide rail, and the sleepers are cast as one with the tunnel roadbed.

9. The single-track tunnel integral track bed rail frame fixture according to claim 1, characterized in that: Conveyor rails are provided on both sides of the tunnel, and a gantry for lifting the rack tooling is provided on the conveyor rails.

Images