Tunnel primary support steel arch mounting device

Abstract

The utility model discloses a tunnel primary support steel arch mounting device which comprises an arch groove used for containing a steel arch and a base located below the arch groove. The arch frame groove comprises a sliding block, a clamping plate and a steel arch frame fixing platform, the interior of the steel arch frame fixing platform is of a groove structure, the steel arch frame fixing platform is fixed to a horizontally-arranged first mounting plate, the sliding block is arranged in a groove in the steel arch frame fixing platform in a sliding mode, and the clamping plate is fixed to the end, opposite to the sliding block, of the steel arch frame fixing platform; a steel arch frame to be installed is placed in the groove between the sliding block and the clamping plate, threaded rods are arranged on the clamping plate, the steel arch frame and the sliding block in a penetrating mode, and the position of the sliding block is adjusted by rotating the threaded rods. The device improves the mounting efficiency of the steel arch, reduces the potential safety hazard of construction, improves the construction environment of first-line constructors, and controls the construction cost.

Description

Technical Field

[0001] The utility model belongs to the technical field of tunnel engineering equipment, and in particular relates to a tunnel initial support steel arch frame installation device. Background Art

[0002] At present, the single-side wall method and double-side wall pilot tunnel method used in tunnel construction processes at home and abroad both require the installation of steel arch frames. During construction, they are mainly carried out manually with the help of simple scaffolding. Due to the high intensity of the work, there are certain requirements on the number of workers. At the same time, due to the lack of suitable arch frame transportation equipment, most of the arch frame is transported manually, resulting in low construction efficiency and high safety risks.

[0003] In this embodiment, the tunnel spans are different, and the entrances and exits are small clearance tunnels. The right line of the tunnel is 738.0m long, with two lanes and a clearance of 11.0×5.0m; the left line is 780m long, with an additional climbing lane (three lanes) and a clearance of 14.5m×5.0m; the entrances and exits of the tunnel and the cracks in the rock mass are mainly grade V surrounding rock. The right tunnel of the tunnel is excavated by the circular excavation reserved core soil method, and the left tunnel of the tunnel is excavated by the single side wall method. Although the overall excavation width of the tunnel is large, the net width of the middle guide tunnel is only 3.5m to 4m, and the operating space at the arch position is small, only about 1m, and can only be carried out by manual erection. The operation is labor-intensive, the working time is long, and the efficiency is low. Utility Model Content

[0004] In order to solve the above problems, the utility model proposes a tunnel initial support steel arch frame installation device, which improves the steel arch frame installation efficiency, reduces construction safety hazards, improves the construction environment of front-line construction personnel, and controls construction costs.

[0005] The utility model is realized by the following technical solutions:

[0006] A tunnel initial support steel arch frame installation device, comprising an arch frame groove for placing the steel arch frame, and a base located below the arch frame groove;

[0007] The arch frame groove includes a slider, a clamp, and a steel arch frame fixing platform. The steel arch frame fixing platform is fixed on a horizontally arranged first mounting plate and has a groove inside. The slider is slidably arranged in the groove. The clamp is fixed to the end of the steel arch frame fixing platform opposite to the slider. The steel arch frame to be installed is placed in the groove between the slider and the clamp. Threaded rods are penetrated through the clamp, the steel arch frame and the slider.

[0008] Furthermore, the slider and the clamp are respectively provided with a first threaded hole and a second threaded hole corresponding to the connection hole of the steel arch frame itself, and a crank is provided on one side of the threaded rod, and the threaded rod is passed through the threaded holes corresponding to the slider and the clamp by turning the crank.

[0009] Furthermore, the threaded rod is provided with a nut for locking on the outer side of the sliding block.

[0010] Furthermore, the interior of the groove is in a convex shape, the tops of the slider and the clamping plate extend to the outside of the groove, and the bottom of the slider matches the groove.

[0011] Furthermore, the thickness of the slider is not less than 5 cm.

[0012] Furthermore, the steel arch mounting device further comprises a rotating mechanism located below the first mounting plate for controlling the rotation of the arch slot;

[0013] The rotating mechanism includes a rotating platform, a rotating motor, a flange and a second mounting plate. The rotating platform is fixedly connected to the bottom of the first mounting plate, and the rotating motor is connected to the bottom of the rotating platform. The rotating motor is connected to the second mounting plate via a flange arranged at the bottom. The rotating motor drives the arch frame slot to rotate as a whole to ensure accurate positioning during the installation of the steel arch frame.

[0014] Furthermore, the steel arch mounting device further comprises a lifting mechanism located below the second mounting plate for controlling the lifting and lowering of the arch slot;

[0015] The lifting mechanism comprises a hydraulic cylinder, a hydraulic pump and an oil tank. The hydraulic cylinder is fixed between the second mounting plate and the base. The hydraulic cylinder is connected to the hydraulic pump. An oil tank is arranged below the hydraulic pump and is fixed on the base panel.

[0016] Furthermore, the base includes a movable base and walking wheels.

[0017] Furthermore, the travel wheel is also provided with a wheel brake to prevent the device from moving.

[0018] The beneficial effects of the utility model are:

[0019] (1) The steel arch frame installation device proposed by the utility model has a simple structure and is easy to set up. It has low requirements on the use environment. When in use, the arch frame is quickly connected on the lower step, and is directly lifted to the arch top by the lifting system. The arch frame is quickly installed after fine-tuning and rotating through the rotating mechanism;

[0020] (2) The distance between the slider and the clamping plate can be adjusted by changing the position of the slider to support steel arches of different thicknesses;

[0021] (3) Threaded holes are arranged transversely on the upper part of the slider and the clamping plate, and the threaded holes correspond to the connection holes of the arch frame itself. Threaded rods are passed through the threaded holes and connection holes on the clamping plate and the arch frame to prevent the arch frame from slipping during the lifting process;

[0022] (4) The rotary motor can achieve 360-degree rotation to ensure accurate positioning during the installation of the steel arch frame, avoid manual lifting and transportation that affects the safety of construction workers, improve construction efficiency, and save economic costs. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0024] Figure 2 It is a front view of the utility model;

[0025] Figure 3 It is a structural schematic diagram of the arch frame groove and the sliding block in the utility model;

[0026] Figure 4 This is a schematic diagram of the rotating mechanism of the utility model;

[0027] Figure numerals: 1. arch frame groove, 11. slider, 111. first threaded hole, 12. clamp, 121. second threaded hole, 13. threaded rod, 131. crank handle, 14. nut, 15. steel arch frame fixing platform, 16. first mounting plate, 17. groove, 2. rotating mechanism, 21. rotating platform, 22. rotating motor, 23. flange, 24. second mounting plate; 3. lifting mechanism, 31. hydraulic cylinder, 32. hydraulic pump, 33. oil tank; 4. base, 41 mobile base, 42. walking wheel, 421. wheel brake. DETAILED DESCRIPTION

[0028] In order to make the purpose, technical solution and advantages of the embodiments of the present utility model clearer, the technical solution in the embodiments of the present utility model will be clearly and completely described below according to the accompanying drawings.

[0029] Embodiment 1:

[0030] As shown in the figure, a tunnel initial support steel arch frame installation device includes an arch frame groove 1 for placing the steel arch frame, a base 4 located below the arch frame groove 1, the base 4 includes a movable base 41 and a walking wheel 42, and the walking wheel 42 is also provided with a wheel brake 421. The wheel brake can fix the device at a specified position to prevent the device from moving.

[0031] The arch frame slot 1 includes a slider 11, a clamping plate 12, and a steel arch frame fixing platform 15. The steel arch frame fixing platform 15 has a groove 17 inside and is fixed on a horizontally arranged first mounting plate 16. The slider 11 has a thickness of not less than 5 cm and has a relatively large strength. The slider 11 is slidably arranged in the groove 17 inside the steel arch frame fixing platform 15. The clamping plate 12 is fixed at the end of the steel arch frame fixing platform 15 opposite to the slider. The groove 17 has a convex structure inside. The tops of the slider 11 and the clamping plate 12 can extend to the outside of the groove, and the bottom of the slider 11 matches the groove. The distance between the slider 11 and the clamping plate 12 can be changed by the position of the slider 11 to adapt to steel arch frames of different thicknesses;

[0032] The center of the slider 11 and the clamping plate 12 are respectively provided with a first threaded hole 111 and a second threaded hole 121 for the threaded rod 13 to pass through; the steel arch frame to be installed is placed in the groove between the slider 11 and the clamping plate 12 on the top of the steel arch frame fixing platform 14; then the threaded rod 13 passes through the first threaded hole 111, the steel arch frame, and the second threaded hole 121 in sequence, so as to fix the steel arch frame and prevent the arch frame from slipping during the lifting process; the end of the threaded rod 13 is provided with a crank 131, and the threaded rod 13 is passed through the corresponding threaded holes of the slider and the clamping plate by turning the crank 131. A nut block 14 for locking is provided at the outer end of the slider 11 for further fixing.

[0033] Furthermore, a rotating mechanism 2 for controlling the rotation of the arch slot 1 is provided below the first mounting plate 16;

[0034] The rotating mechanism 2 includes a rotating platform 21, a rotating motor 22, a flange 23 and a second mounting plate 24. The rotating platform 21 is fixedly connected to the bottom of the first mounting plate 16, the rotating motor 22 is connected to the bottom of the rotating platform 21, the bottom of the rotating motor 22 is fixedly connected to the flange 23, and the flange 23 is fixedly connected to the second mounting plate 24. The rotating motor 22 drives the arch frame slot to rotate as a whole, and the arch frame slot 1 can be rotated 360° to adjust the angle, so as to ensure the accurate positioning of the steel arch frame during installation and improve construction efficiency.

[0035] Furthermore, the steel arch installation device also includes a lifting mechanism 3 located below the second installation plate 24 for controlling the lifting of the arch slot 1;

[0036] The lifting mechanism 3 includes a hydraulic cylinder 31, a hydraulic pump 32 and an oil tank 33. Four hydraulic cylinders 31 are fixedly connected between the top of the mobile base 41 and the second mounting plate 24. The hydraulic cylinder 31 is connected to the hydraulic pump 32. An oil tank 33 is arranged below the hydraulic pump 32 and is fixed on the base 41. The lifting system 3 drives the hydraulic pump 32 to make the hydraulic cylinder 31 rise, and the second mounting plate 24 is driven up and down by the telescopic movement of the hydraulic cylinder 31, so that the arch frame slot 1 moves up and down, and the steel arch frame is lifted to a corresponding height.

[0037] The working principle and use process of this patent are as follows:

[0038] After the blasting excavation of the middle guide tunnel is completed, the debris from the heading face is transported in time, the road is leveled after completion, the dangerous rocks on the heading face are cleared, and the initial concrete is sprayed in time. The arch frame is connected to the outside of the middle guide tunnel, and the arch frame is directly lifted by the arch frame groove 1. The threaded rod 13 passes through the first threaded hole 111, the steel arch frame, and the second threaded hole 121 in sequence to fix the arch frame, and then the lifting mechanism 3 is started to lift the arch frame to the heading face of the middle guide tunnel, and the position of the arch frame is fine-tuned by controlling the rotating mechanism 2. After completion, the bolts are manually connected and rotated with a wrench to reinforce. After the arch frame is installed and connected, the anchor construction team enters the site to start the anchor operation.

[0039] This patent can be used when the operating space at the arch position is small and the erection machine cannot be used for erection operations, solving the problems of high labor intensity, low efficiency and high risk of manual erection in the existing technology. In addition, the device described in this patent is small, and the device can be quickly installed or disassembled, which is flexible and convenient and does not occupy the cycle time; the arch frame is quickly connected on the lower step and directly lifted to the arch, and can be fine-tuned and rotated to achieve the rapid installation of the middle guide hole arch frame, which speeds up the cycle time while reducing the work intensity and number of workers. At the same time, due to mechanical operation, only simple manual cooperation is required, which reduces the risk of workers being injured when manually erecting the frame.

[0040] It should be noted that although the utility model is described through the above embodiments, the utility model can also have other multiple embodiments. Without departing from the spirit and scope of the utility model, it is obvious that those skilled in the art can make various corresponding changes and deformations to the utility model, but these changes and deformations should all fall within the scope of protection of the attached claims of the utility model and their equivalents.

Claims

1. A tunnel initial support steel arch installation device, characterized in that: It comprises an arch frame groove (1) for placing a steel arch frame, and a base (4) located below the arch frame groove (1); The arch frame groove (1) comprises a slider (11), a clamping plate (12), and a steel arch frame fixing platform (15); the steel arch frame fixing platform (15) is fixed on a horizontally arranged first mounting plate (16) and has a groove (17) inside; the slider (11) is slidably arranged in the groove (17); the clamping plate (12) is fixed to an end of the steel arch frame fixing platform (15) opposite to the slider; the steel arch frame to be installed is placed in the groove between the slider (11) and the clamping plate (12); and the clamping plate (12), the steel arch frame and the slider (11) are penetrated by a threaded rod (13); The steel arch installation device also includes a rotating mechanism (2) located below the first installation plate (16) for controlling the rotation of the arch slot (1), the rotating mechanism (2) including a rotating platform (21), a rotating motor (22), a flange (23) and a second installation plate (24), the rotating platform (21) and the bottom of the first installation plate (16) are fixedly connected, the rotating motor (22) is connected to the bottom of the rotating platform (21), the rotating motor (22) is connected to the second installation plate (24) via the flange (23) provided at the bottom, and the rotating motor (22) drives the arch slot to rotate as a whole, so as to ensure accurate positioning during the installation of the steel arch; The steel arch mounting device further comprises a lifting mechanism (3) located below the second mounting plate (24) for controlling the lifting of the arch slot (1), the lifting mechanism (3) comprising a hydraulic cylinder (31), a hydraulic pump (32) and an oil tank (33), the hydraulic cylinder (31) being fixedly located between the second mounting plate (24) and the base, the hydraulic cylinder (31) being connected to the hydraulic pump (32), an oil tank (33) being arranged below the hydraulic pump (32) and being fixed on a panel of the base (4).

2. The tunnel initial support steel arch installation device according to claim 1 is characterized by: The slider (11) and the clamping plate (12) are respectively provided with a first threaded hole (111) and a second threaded hole (121) corresponding to the connection hole of the steel arch frame itself, and a crank (131) is provided on one side of the threaded rod (13), and the threaded rod (13) is passed through the corresponding threaded holes of the slider and the clamping plate by turning the crank (131).

3. The tunnel initial support steel arch installation device according to claim 2 is characterized in that: The threaded rod (13) is located outside the slider (11) and is provided with a nut (14) for locking.

4. The tunnel initial support steel arch installation device according to claim 1 is characterized by: The groove (17) is in a convex structure, the tops of the slider (11) and the clamping plate (12) extend to the outside of the groove, and the bottom of the slider (11) matches the groove.

5. A tunnel initial support steel arch installation device according to claim 1 or 4, characterized in that: The thickness of the sliding block (11) is not less than 5 cm.

6. The tunnel initial support steel arch installation device according to claim 1, characterized in that: The base (4) comprises a movable base (41) and running wheels (42).

7. The tunnel initial support steel arch installation device according to claim 6 is characterized by: The travel wheel (42) is also provided with a wheel brake (421) for preventing the device from moving.

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