Arch frame quick positioning tool

Abstract

The utility model provides a quick positioning tool for an arch frame, and belongs to the technical field of tunnel construction. The quick positioning tool for the arch frame comprises a cross beam and connecting plates which are arranged on the top of the cross beam and sequentially distributed in the length direction, the number and the interval of the connecting plates are matched with the arrangement mode of a steel arch in the arch frame, and the connecting plates are in a vertical state. The included angle between the connecting line between the tops of every two adjacent connecting plates and the horizontal plane is matched with the inclination angle of the tunnel longitudinal slope. The device has the advantages of being high in arch frame installation efficiency, low in cost and high in precision.

Description

Technical Field

[0001] The utility model relates to the technical field of tunnel construction, and particularly relates to a rapid positioning tool for an arch frame. Background Art

[0002] In the case of full-process large machine matching construction in a railway inclined shaft, restricted by the adverse factor of a small cross-section, it is impossible to assemble the arch frame in advance outside the tunnel, resulting in a long process time and affecting the logistics organization inside the tunnel. To shorten the erection process time, reduce the erection personnel, and improve the erection efficiency, it is necessary to quickly and accurately assemble the arch frame near the heading face. In view of this, the present application provides a rapid positioning tool for an arch frame. Content of the Utility Model

[0003] To solve the above technical problems, the utility model proposes a rapid positioning tool for an arch frame.

[0004] The technical solution of the utility model is realized as follows:

[0005] A rapid positioning tool for an arch frame includes a cross beam and connecting plates arranged in sequence along the length direction on the top of the cross beam. The number and spacing of the connecting plates are both adapted to the arrangement mode of a steel arch in the arch frame. The connecting plates are in a vertical state, and the included angle between the connection line between the tops of two adjacent connecting plates and the horizontal plane is adapted to the inclination angle of the tunnel longitudinal slope.

[0006] Further, a telescopic support assembly is connected to the bottom of the connecting plate, and the bottom end of the telescopic support assembly supports on the cross beam. Among them, the telescopic support assembly includes a telescopic pillar and a telescopic adjustment structure. One telescopic pillar is arranged at each of the four corners of the lower surface of the connecting plate. The telescopic adjustment structure includes a lead screw and a nut sleeve. The top end of the rotating lead screw is rotatably connected to the center position of the connecting plate, and the nut sleeve is threadedly sleeved on the bottom end of the lead screw.

[0007] Further, the telescopic pillar includes an upper pillar and a lower column sleeve. The bottom end of the upper pillar is inserted into the lower column sleeve. A plurality of first positioning holes are equidistantly arranged on the upper pillar. A first through hole is arranged on the surface of the lower column sleeve. A "C"-shaped first positioning pin is provided corresponding to each telescopic support assembly. One end of the first positioning pin simultaneously passes through the first through holes of the two lower column sleeves on the same side.

[0008] Further, a beam sleeve is connected to the bottom end of the telescopic support assembly. The bottom ends of the telescopic pillar and the nut sleeve are both fixedly connected to the top surface of the beam sleeve. The beam sleeve is slidably sleeved on the top of the cross beam.

[0009] Furthermore, the crossbeam is provided with a plurality of second positioning holes equidistantly along its length direction, the beam sleeve is provided with a plurality of second through holes, and the second through holes are penetrated by second positioning pins.

[0010] Furthermore, the ends of the first positioning pin and the second positioning pin are both configured to be threaded rods, and the ends of the first positioning pin and the second positioning pin are both threadedly connected with positioning nuts.

[0011] Furthermore, both ends of the crossbeam are provided with leveling legs, wherein the leveling legs include a pad and a support bolt rotatably mounted on the top surface of the pad, and a threaded sleeve is installed on the crossbeam, and the support bolt is threadedly inserted into the threaded sleeve.

[0012] Furthermore, through slots are provided at both ends of the crossbeam near the end positions, and the leveling legs are located in the through slots.

[0013] Furthermore, mutually adaptable plug blocks and slots are provided at the tops of both ends of the beam, and the distance between the first positioning holes at both ends of the beam and the end of the beam is half of the distance between the two first positioning holes.

[0014] The utility model has the following beneficial effects:

[0015] (1) By using this arch frame rapid positioning tooling, the construction progress task is ensured while the full process of large-scale machine operation is fully realized.

[0016] (2) The use of this arch frame rapid positioning tooling can significantly reduce costs and increase efficiency, mainly in reducing process cycle time, avoiding excessive consumption of connecting steel bars and mesh, and reducing the number of construction workers.

[0017] (3) The quick positioning tooling parts of the arch frame are easy to purchase and manufacture, with low cost and high efficiency. The materials can be reused and are low-carbon and environmentally friendly.

[0018] (4) By using the arch frame rapid positioning tool, the safety factor of the initial support operation is improved, and the time that construction workers are exposed to the open excavation surface is greatly reduced. The traditional assembly and installation time is 2.5 hours. After the integrated arch frame precise positioning tool is used, the installation time of the arch frame is reduced to 1.8 hours.

[0019] (5) By using the rapid positioning tooling of the arch frame, the construction error caused by human factors is reduced, and the quality of the initial support construction is significantly improved. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 It is an overall schematic diagram of the utility model arch frame rapid positioning tooling;

[0021] Figure 2 This utility model Figure 1A in the enlarged view;

[0022] Figure 3 This utility model Figure 1 The enlarged view of point B in the figure;

[0023] Figure 4 This utility model Figure 1 The enlarged view of point C in the figure;

[0024] Figure 5 This utility model Figure 1 Side view of.

[0025] In the figure: 1, cross beam; 2, connecting plate; 3, lead screw; 4, threaded sleeve; 5, upper support; 6, lower column sleeve; 7, first positioning hole; 8, first positioning pin; 9, beam sleeve; 10, second positioning hole; 11, second positioning pin; 12, positioning nut; 13, pad; 14, support bolt; 15, threaded sleeve; 16, through groove; 17, plug block; 18, slot. 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 5 As shown, the present embodiment provides an arch frame rapid positioning tool, comprising a crossbeam 1 and connecting plates 2 arranged on the top of the crossbeam 1 and distributed in sequence along the length direction, the number and spacing of the connecting plates 2 are adapted to the arrangement of a steel arch in the arch frame, the connecting plates 2 are in a vertical state, and the angle between the line between the tops of two adjacent connecting plates 2 and the horizontal plane is adapted to the inclination angle of the longitudinal slope of the tunnel.

[0028] The application of the arch frame rapid positioning tooling of the above embodiment is mainly used to realize the rapid and precise pre-assembly of the arch frame at the face, and ensure the precise docking of the upper and lower arch frames when using the assembly trolley for installation.

[0029] The specific implementation steps are as follows:

[0030] Step 1: Pre-connection of arch waist and arch frame

[0031] Transport the arch frame to the face, and use the arch frame to quickly locate the tooling to pre-assemble the arch frame at the waist. During installation, pay attention to clean up the debris at the two connecting plates and use bolts to connect them firmly. After the bolt connection is completed, conduct on-site measurement and verification, and install the connecting steel bars after verification. The connecting steel bars are installed by welding to ensure that the arch frame is not deformed by external forces during installation, doubly ensuring the assembly accuracy. After the connecting steel bars are installed, the mesh is installed, and the mesh installation is also connected by welding. After the assembly is completed, remove the positioning device and place the arch frame on the side wall.

[0032] Step 2: Pre-connection of arch frame

[0033] Since one arch frame is composed of three sections, the arch frame is pre-installed and connected in sections. After the connection is completed, it is placed on the arch frame assembly trolley operating platform. Two sets of arch frame quick positioning tools are used for positioning and reinforcement to ensure that the arch frame can be accurately connected with the waist arch frame.

[0034] Step 3: Installation of the whole ring arch

[0035] The arch frame is lifted to the designed position using the arch frame assembly trolley, and two construction workers are deployed on the auxiliary hanging baskets on both sides to connect the arch frame. After the connection is completed, the recheck measurement is carried out, and after the installation is in place, the connection steel bars are used to connect the reserved connection steel bars of the upper circulation primary support.

[0036] The "fast and accurate" positioning tooling of the arch frame assembly trolley uses semi-finished products on site for processing and production. It is low-cost and effective, solving the key problems in the construction process of large-scale supporting equipment. While reducing the number of construction personnel and reducing costs, the process time is reasonably controlled and the quality of on-site construction is significantly improved.

[0037] A telescopic support assembly is connected to the bottom of the connecting plate 2, and the bottom end of the telescopic support assembly is supported on the cross beam 1, wherein the telescopic support assembly includes a telescopic support column and a telescopic adjustment structure, and a telescopic support column is arranged at each of the four corners of the lower surface of the connecting plate 2. The telescopic adjustment structure includes a lead screw 3 and a thread sleeve 4. The top end of the rotating lead screw 3 is rotatably connected to the center position of the connecting plate 2, and the thread sleeve 4 is threadedly sleeved on the bottom end of the lead screw 3.

[0038] By adjusting the height of the connecting plate 2 through the telescopic support assembly, the angle between the top connection line of two adjacent connecting plates 2 and the horizontal plane can be adjusted to meet the needs of tunnel construction operations with different longitudinal slope angles. At the same time, by synchronously adjusting the overall height of all connecting plates 2, it can also be applied to the needs of tunnels with the same longitudinal slope angle but different heights.

[0039] The telescopic support column includes an upper support column 5 and a lower column sleeve 6. The bottom end of the upper support column 5 is inserted into the lower column sleeve 6. A plurality of first positioning holes 7 are equidistantly arranged on the upper support column 5. A first through hole is arranged on the surface of the lower column sleeve 6. Corresponding to each telescopic support component, a "C"-shaped first positioning pin 8 is provided. One end of the first positioning pin 8 simultaneously passes through the first through holes of the two lower column sleeves 6 on the same side.

[0040] By directly rotating the lead screw 3, the height of the connecting plate 2 can be adjusted. After the height of the connecting plate 2 is adjusted, the two ends of the first positioning pin 8 are respectively inserted into the first positioning holes 7 on the corresponding side to fix the height of the connecting plate 2. At this time, the lead screw 3 also has a fixing effect on the connecting plate 2 through the threaded cooperation with the lead screw sleeve 4.

[0041] The bottom end of the telescopic support component is connected with a beam sleeve 9. The bottom ends of the telescopic support column and the lead screw sleeve 4 are both fixedly connected to the top surface of the beam sleeve 9. The beam sleeve 9 is slidably sleeved on the top of the cross beam 1. By using the displacement of the beam sleeve 9 along the length direction on the cross beam 1, the distance between two adjacent connecting plates 2 can be adjusted.

[0042] A plurality of second positioning holes 10 are equidistantly arranged on the cross beam 1 along its length direction. A plurality of second through holes are arranged on the beam sleeve 9, and a second positioning pin 11 is inserted through the second through holes. When moving the beam sleeve 9 in the length direction of the cross beam 1, the second positioning pin 11 is first pulled out from the second positioning hole 10. After the position of the beam sleeve 9 is adjusted, the second positioning pin 11 is reinserted into the corresponding second positioning hole 10 after passing through the second through hole.

[0043] The ends of the first positioning pin 8 and the second positioning pin 11 are both set in the shape of a threaded rod, and positioning nuts 12 are threadedly connected to the ends of the first positioning pin 8 and the second positioning pin 11. By using the positioning nuts 12 to fix the first positioning pin 8 and the second positioning pin 11 respectively, the first positioning pin 8 and the second positioning pin 11 can be prevented from falling off, improving the stability.

[0044] Leveling legs are arranged at both ends of the cross beam 1. Among them, the leveling leg includes a backing plate 13 and a support bolt 14 rotatably installed on the top surface of the backing plate 13. A threaded sleeve 15 is installed on the cross beam 1, and the support bolt 14 is threadedly inserted into the threaded sleeve 15. By setting the leveling legs, during the erection of the arch waist, the heights of both ends of the cross beam 1 are adjusted to achieve the leveling effect of the cross beam 1.

[0045] Through grooves 16 are arranged at both ends of the cross beam 1 near the end positions. The leveling legs are located in the through grooves 16. When the leveling legs are in the shortest state, they are stored in the through grooves 16 to prevent the leveling legs from interfering with the normal placement of the cross beam 1.

[0046] The tops of both ends of the crossbeam 1 are provided with plug blocks 17 and slots 18 that are adapted to each other, and the distance between the first positioning holes 7 at both ends of the crossbeam 1 and the end of the crossbeam 1 is half the distance between the two first positioning holes 7. By inserting the plug block 17 on the crossbeam 1 of one arch frame rapid positioning tool into the slot 18 on the crossbeam 1 of another arch frame rapid positioning tool, the two butted arch frame rapid positioning tools can be effectively calibrated to facilitate the expanded use of the arch frame rapid positioning tool.

[0047] 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 quick positioning tool for an arch frame, characterized in that: It includes a cross beam (1) and connecting plates (2) arranged in sequence along the length direction on the top of the cross beam (1). The number and spacing of the connecting plates (2) are both adapted to the arrangement mode of a steel arch in the arch frame. The connecting plates (2) are in a vertical state, and the included angle between the connection line between the tops of two adjacent connecting plates (2) and the horizontal plane is adapted to the inclination angle of the tunnel longitudinal slope.

2. The arch frame rapid positioning tool according to claim 1 is characterized in that: A telescopic support assembly is connected to the bottom of the connecting plate (2), and the bottom end of the telescopic support assembly is supported on the cross beam (1). Among them, the telescopic support assembly includes a telescopic column and a telescopic adjustment structure. One telescopic column is arranged at each of the four corners of the lower surface of the connecting plate (2). The telescopic adjustment structure includes a lead screw (3) and a lead screw sleeve (4). The top end of the lead screw (3) is rotatably connected to the central position of the connecting plate (2), and the lead screw sleeve (4) is threadedly sleeved on the bottom end of the lead screw (3).

3. The arch frame rapid positioning tool according to claim 2, characterized in that: The telescopic column includes an upper column (5) and a lower column sleeve (6). The bottom end of the upper column (5) is inserted into the lower column sleeve (6). A plurality of first positioning holes (7) are equidistantly arranged on the upper column (5). A first through hole is formed on the surface of the lower column sleeve (6). For each telescopic support assembly, a "C"-shaped first positioning pin (8) is provided. One end of the first positioning pin (8) simultaneously passes through the first through holes of the two lower column sleeves (6) on the same side.

4. The arch frame rapid positioning tool according to claim 3, characterized in that: A beam sleeve (9) is connected to the bottom end of the telescopic support assembly. The bottom ends of the telescopic column and the lead screw sleeve (4) are both fixedly connected to the top surface of the beam sleeve (9). The beam sleeve (9) is slidably sleeved on the top of the cross beam (1).

5. The arch frame rapid positioning tool according to claim 4, characterized in that: A plurality of second positioning holes (10) are equidistantly arranged on the cross beam (1) along its length direction. A plurality of second through holes are formed on the beam sleeve (9), and a second positioning pin (11) passes through the second through holes.

6. The arch frame rapid positioning tool according to claim 5, characterized in that: The ends of the first positioning pin (8) and the second positioning pin (11) are both set in a threaded rod shape, and positioning nuts (12) are threadedly connected to the ends of the first positioning pin (8) and the second positioning pin (11).

7. The arch frame rapid positioning tool according to claim 4, characterized in that: Leveling legs are arranged at both ends of the cross beam (1). Among them, the leveling leg includes a backing plate (13) and a support bolt (14) rotatably installed on the top surface of the backing plate (13). A threaded sleeve (15) is installed on the cross beam (1), and the support bolt (14) is threadedly inserted into the threaded sleeve (15).

8. The arch frame rapid positioning tool according to claim 7, characterized in that: Through grooves (16) are formed at positions near the ends of both ends of the cross beam (1), and the leveling legs are located in the through grooves (16).

9. The arch frame rapid positioning tool according to claim 7, characterized in that: Insert blocks (17) and slots (18) that are mutually adapted are arranged at the tops of both ends of the cross beam (1), and the distance between the first positioning hole (7) at both ends of the cross beam (1) and the end of the cross beam (1) is half of the distance between two first positioning holes (7).

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