Jacking device for arch frame installation

Abstract

The utility model discloses a jacking device for arch frame installation, which comprises a jacking moving device composed of a movable inner plug rod and a fixed outer plug rod, the movable inner plug rod is inserted into the inner side of the fixed outer plug rod, the bottom end of the fixed outer plug rod is fixedly connected with a base, and the top end of the movable inner plug rod is fixedly connected with a jacking device. The bottom of the jacking device is in lap joint with the top end of the fixed outer plug rod. An electric chain block used for controlling the movable inner plug rod to ascend and descend relative to the fixed outer plug rod is arranged at the position, close to the top end, of the side wall of the fixed outer plug rod. According to the steel arch jacking device, the operation intensity of manual installation of the steel arch is greatly reduced, and the steel arch needing to be installed can be jacked to a designated installation position.

Description

Technical Field

[0001] The utility model belongs to the technical field of tunnel engineering, and particularly relates to a jacking device for arch installation. Background Technique

[0002] As an important part of infrastructure construction, tunnel engineering plays a crucial role in urban traffic and economic development. Due to the complex geological conditions of tunnel engineering, in the process of engineering design and construction, the initial support structure is of utmost importance and plays an important role in ensuring the stability of tunnel surrounding rock. Among them, the steel arch is an important part of the initial support, which plays a role in supporting and strengthening the surrounding rock during the tunnel construction process and can improve the stability of the initial support structure. However, during the installation process of the steel arch, due to the narrow space and complex environment in the tunnel, as well as the large volume and heavy weight of the steel arch itself and other factors, its installation has always been a complex and time-consuming task.

[0003] The traditional installation process of tunnel steel arches usually relies on manual operation. Construction workers need to carry each arch unit to the heading face and then splice them manually. This method has a high labor intensity for workers, large physical consumption, high installation difficulty, low construction efficiency, and often requires a large amount of time and manpower to complete the arch installation process. In addition, due to the complex construction environment in the tunnel, there are certain safety hazards in on-site construction. Content of the Utility Model

[0004] The purpose of the utility model is to provide a jacking device for arch installation, which greatly reduces the operation intensity of manual installation of steel arches and can jack the steel arch to be installed to the specified installation position.

[0005] The technical solution adopted by the utility model is that the jacking device for arch installation includes a jacking and moving device composed of a movable inner plug rod and a fixed outer plug rod. The movable inner plug rod is inserted into the inner side of the fixed outer plug rod. The bottom end of the fixed outer plug rod is fixedly connected with a base, and the top end of the movable inner plug rod is fixedly connected with a top support device. The bottom of the top support device is lapped with the top end of the fixed outer plug rod.

[0006] An electric chain hoist for controlling the lifting movement of the movable inner plug rod relative to the fixed outer plug rod is arranged at a position near the top end on the side wall of the fixed outer plug rod.

[0007] The utility model is further characterized in that

[0008] A bearing block is fixedly connected to the side wall of the fixed outer plug rod, and the electric chain hoist is fixed to the bottom of the bearing block.

[0009] The side wall of the fixed outer plug rod is axially provided with a travel slit. A moving plate is fixedly connected to the position of the movable inner plug rod relative to the travel slit. A round hole is opened in the part of the moving plate passing through the fixed outer plug rod. The chain of the electric chain hoist is connected to the moving plate through the round hole.

[0010] The jacking device includes an L-shaped fixed bottom support. The outer side of the long side of the fixed bottom support is fixedly connected to the movable inner plug rod. The jacking device further includes a movable bottom support that cooperates with the fixed bottom support to form a U shape;

[0011] A plurality of pin holes are opened at the bottom of the jacking device. The plurality of pin holes are evenly distributed along the long side of the fixed bottom support. The pin holes pass through the movable bottom support and the fixed bottom support.

[0012] Circular holes are opened at the four corner positions of the base.

[0013] The beneficial effects of the present utility model are as follows:

[0014] (1) The jacking device for arch installation of the present utility model fixes the steel arch to be installed through the jacking device, and then realizes the lifting movement of the jacking device through the electric chain hoist, thereby completing the jacking operation of the steel arch. At the same time, the overall device has a low manufacturing cost and is easy to operate. In actual use, the labor intensity of workers shoulder-carrying and hand-lifting the steel arch can be greatly reduced, and the device can be installed and disassembled at any time, achieving recycling, which greatly saves the construction cost.

[0015] (2) The width of the jacking device of the jacking device for arch installation of the present utility model can be adjusted by inserting pins into different pin holes, so as to adapt to steel arches of different sizes. The electric chain hoist can easily lift and lower the height of the installation and docking of the steel arch. Only 2 people are required to complete the installation work of the steel arch, reducing the number of construction personnel by 1 / 3 compared with traditional manual installation. Description of the Drawings

[0016] Figure 1 is a schematic structural diagram of the jacking device for arch installation of the present utility model;

[0017] Figure 2 is a schematic structural diagram of the jacking device in the jacking device for arch installation of the present utility model;

[0018] Figure 3 is a schematic structural diagram of the base in the jacking device for arch installation of the present utility model;

[0019] Figure 4 is a schematic diagram of the use of the present utility model in a tunnel.

[0020] In the figure, 1. Jacking device, 11. Pin hole, 12. Fixed bottom support, 13. Movable bottom support, 2. Jacking and moving device, 21. Movable inner plug rod, 22. Fixed outer plug rod, 23. Stroke seam, 24. Moving plate, 25. Electric chain hoist, 3. Bearing block, 4. Base, 41. Circular hole, 5. Tunnel bench, 6. Steel arch frame. Detailed implementation mode

[0021] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative work shall fall within the protection scope of the present invention.

[0022] Embodiment 1

[0023] The jacking device for arch frame installation of the present invention, as Figure 1 shown, includes a jacking and moving device 2 composed of a movable inner plug rod 21 and a fixed outer plug rod 22. The movable inner plug rod 21 is inserted into the inner side of the fixed outer plug rod 22. The bottom end of the fixed outer plug rod 22 is fixedly connected to a base 4. The top end of the movable inner plug rod 21 is fixedly connected to a jacking device 1. The bottom of the jacking device 1 is lapped with the top end of the fixed outer plug rod 22.

[0024] That is, when the movable inner plug rod 21 moves telescopically relative to the fixed outer plug rod 22, it can drive the jacking device 1 to realize lifting and lowering movements. The jacking device 1 is used to fix the steel arch frame 6 to be installed. When the jacking device 1 makes a lifting and lowering movement, it drives the steel arch frame 6 to perform a jacking operation.

[0025] Furthermore, an electric chain hoist 25 for controlling the lifting and lowering movement of the movable inner plug rod 21 relative to the fixed outer plug rod 22 is arranged at a position near the top end on the side wall of the fixed outer plug rod 22. The electric chain hoist 25 is connected to the movable inner plug rod 21. When it is necessary to perform a rising operation, the electric chain hoist 25 is started for a retracting operation, and the movable inner plug rod 21 is pulled upward by the chain of the electric chain hoist 25; when it is necessary to perform a lowering operation, the electric chain hoist 25 gradually releases the chain, and the movable inner plug rod 21 moves downward under the action of its own gravity.

[0026] The device of the present invention has a simple structure and is very convenient to operate. During actual use, it can greatly reduce the labor intensity of workers shoulder-lifting and hand-lifting the steel arch frame 6, and the device can be installed and disassembled at any time, achieving recycling, which greatly saves the construction cost.

[0027] Embodiment 2

[0028] The jacking device for arch frame installation of the utility model includes a top support device 1, a jacking and moving device 2, a bearing device and a bottom device. The jacking and moving device 2 includes a movable inner plug rod 21 and a fixed outer plug rod 22 which are inserted into each other. The bottom of the fixed outer plug rod 22 is welded and fixed on the bottom device. The bottom device is a rectangular base 4. The bearing device is welded and fixed on the upper part of the fixed outer plug rod 22. The top support device 1 is welded and fixed on the top of the jacking and moving device 2.

[0029] Specifically, as Figure 2 shown, the top support device 1 includes an L-shaped fixed bottom support 12. The outer side of the long side of the fixed bottom support 12 is fixedly connected to the movable inner plug rod 21. The top support device 1 further includes a movable bottom support 13 which cooperates with the fixed bottom support 12 to form a U shape.

[0030] In the actual installation of the steel arch frame 6, there will be steel arch frames 6 of different sizes. In order to make the top support device 1 adaptable to steel arch frames 6 of different sizes and avoid the operation steps of replacing the top support device 1, a number of pin holes 11 are opened at the bottom of the top support device 1. The number of pin holes 11 is evenly distributed along the long side of the fixed bottom support 12. The pin holes 11 pass through the movable bottom support 13 and the fixed bottom support 12. When it is necessary to adjust the fixed width of the top support device 1, the movable bottom support 13 is pulled along the long side of the fixed bottom support 12 to re-match the pin holes 11 on the movable bottom support 13 and the fixed bottom support 12. When the movable bottom support 13 and the fixed bottom support 12 are adjusted to an appropriate position, a pin is inserted into the pin hole 11 to complete the adjustment of the height of the top support device 1, so as to meet the installation requirements of steel arch frames 6 of different models on site.

[0031] Embodiment 3

[0032] On the basis of Embodiment 2, in the jacking device for arch frame installation of this embodiment, the bearing device includes a bearing block 3 fixed on the upper part of the fixed outer plug rod 22. The bearing block 3 is made of a steel plate with dimensions of 10×10×1 cm. An electric chain hoist 25 is fixed at the bottom of the bearing block 3.

[0033] Further, in order to improve the stability of the movable inner plug rod 21 when moving up and down, a travel slot 23 is axially opened on the side wall of the fixed outer plug rod 22. A moving plate 24 is fixedly connected at the position of the movable inner plug rod 21 relative to the travel slot 23. A round hole is opened in the part of the moving plate 24 passing through the fixed outer plug rod 22. The chain of the electric chain hoist 25 is connected to the moving plate 24 through the round hole. When the movable inner plug rod 21 moves up and down, on the one hand, the travel slot 23 provides the moving path space for the movable inner plug rod 21, and on the other hand, the position of the fixed outer plug rod 22 relative to the travel slot 23 limits and fixes the moving plate 24, improving the stability of the movable inner plug rod 21 when moving.

[0034] Further, as Figure 3As shown, circular holes 41 are provided at the four circumferential corner positions of the base 4. During actual use, as Figure 4 shown, place the device of the present utility model at the corresponding position of the tunnel bench 5, and fix it on the tunnel bench 5 with steel bars passing through the circular holes 41 to ensure the stability of the device during the installation process of the steel arch 6.

[0035] During the use of the present utility model, first adjust the jacking device 1 to adapt to the width of the steel arch 6, then insert the steel arch 6 into the U-shaped groove of the jacking device 1, start the electric hoist 25 to contract the chain, drive the movable inner plug rod 21 to move upward, and realize the jacking operation of the steel arch 6. When the steel arch 6 moves to the position to be installed, stop the electric hoist 25; after the worker completes the installation and fixation of the steel arch 6, start the electric hoist 25 to loosen the chain, and the movable inner plug rod 21 resets under the action of gravity.

Claims

1. Jacking device for arch installation, characterized in that, The jacking and moving device (2) includes a movable inner plug rod (21) and a fixed outer plug rod (22). The movable inner plug rod (21) is inserted into the inner side of the fixed outer plug rod (22). The bottom end of the fixed outer plug rod (22) is fixedly connected to a base (4). The top end of the movable inner plug rod (21) is fixedly connected to a jacking device (1). The bottom of the jacking device (1) is lapped with the top end of the fixed outer plug rod (22). An electric chain hoist (25) for controlling the lifting movement of the movable inner plug rod (21) relative to the fixed outer plug rod (22) is arranged at a position close to the top end on the side wall of the fixed outer plug rod (22).

2. The jacking device for arch support installation according to claim 1, characterized in that, A bearing block (3) is fixedly connected to the side wall of the fixed outer plug rod (22). The electric chain hoist (25) is fixed to the bottom of the bearing block (33).

3. The jacking device for arch support installation according to claim 1 or 2, characterized in that, A travel slot (23) is axially formed on the side wall of the fixed outer plug rod (22). A moving plate (24) is fixedly connected to the position of the movable inner plug rod (21) relative to the travel slot (23). A round hole is formed in the part of the moving plate (24) passing through the fixed outer plug rod (22). The chain of the electric chain hoist (25) is connected to the moving plate (24) through the round hole.

4. The jacking device for arch support installation according to claim 1, characterized in that, The jacking device (1) includes an L-shaped fixed bottom support (12). The outer side of the long side of the fixed bottom support (12) is fixedly connected to the movable inner plug rod (21). The jacking device (1) further includes a movable bottom support (13) that cooperates with the fixed bottom support (12) to form a U shape. A plurality of pin holes (11) are formed at the bottom of the jacking device (1). The plurality of pin holes (11) are evenly distributed along the long side of the fixed bottom support (12). The pin holes (11) pass through the movable bottom support (13) and the fixed bottom support (12).

5. The jacking device for arch support installation according to claim 1, characterized in that, Circular holes (41) are formed at the four corner positions of the base (4).

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