Height and hoop diameter adjustable movable supporting frame capable of reducing resistance of trolley air pipe

Abstract

The utility model provides a movable support frame with adjustable height and hoop diameter for reducing the resistance of a trolley air duct, which adopts a modular design and mainly comprises three core components, namely a height-adjustable upright post system, a self-adaptive hoop diameter system and a movable system. The height-adjustable stand column system can freely adjust the supporting height and can meet the requirements of air pipes with various arrangement heights. The self-adaptive hoop diameter system is driven by a hand wheel gear reducing device, operation is easy, and continuous stepless adjustment of the hoop diameter of the air pipe can be achieved. The moving system ensures that the supporting frame flexibly moves and is synchronous with construction. A quick clamping device of the adjustable stand column system and a brake of the moving system can effectively fix the device, and it is ensured that the air pipe is effectively and stably arranged. The device is wide in application range, easy to operate, high in follow-up performance, economical and practical, and capable of effectively solving the problems that in existing tunnel construction engineering, air pipes at the trolley are arranged disorderly, wind resistance is large, the air leakage rate is high, and a rigid supporting frame is poor in operability.

Description

TECHNICAL FIELD

[0001] The utility model relates to the field of tunnel construction ventilation dust fall, especially a movable support frame with adjustable height and hoop diameter for reducing the resistance of trolley air pipe. BACKGROUND

[0002] In the tunnel construction process, a large amount of silica dust and harmful gas is generated, which makes the tunnel construction environment worse, not only damages the health of construction workers and causes safety problems, but also reduces construction efficiency and quality. Therefore, in the complex construction environment of tunnels and underground engineering, effective ventilation measures are the key factors to ensure the safety of construction workers and guarantee construction.

[0003] However, in the tunnel construction site, the air pipe arrangement at the trolley is chaotic, which has become a prominent problem affecting ventilation efficiency. Due to the obstruction of the trolley, the air pipe has to be straight through the trolley. For trolleys without air pipe channels, the air pipe is directly bent and placed on the ground, and then returns to the original height position after passing through the trolley, which leads to chaotic air pipe layout and affects the stability of air flow. At the same time, the problems of insufficient air pipe turning radius, extrusion deformation and excessive joints further aggravate the wind pressure loss, which significantly reduces the effective air volume. Moreover, the bumping of the trolley during movement can cause air pipe leakage, which directly threatens construction safety and personnel health. In addition, although some tunnels are equipped with rigid support frames, the operability is poor, which leads to the lag of air pipe adjustment behind the trolley advancing progress.

[0004] Therefore, in view of these problems, a movable support frame with strong operability, which can reasonably arrange the air pipe at the trolley, solve the problems of air pipe bending and winding, and reduce wind resistance and wind loss, is particularly important. INVENTION CONTENTS

[0005] The utility model aims at providing a movable support frame with adjustable height and hoop diameter for reducing the resistance of trolley air pipe, which aims to solve the problems of chaotic air pipe arrangement, high wind resistance, high air leakage rate and poor operability at the trolley in existing tunnel construction projects, and improve the efficiency of construction ventilation and pollution removal and the construction environment.

[0006] To achieve the above-mentioned purpose, a movable support frame with adjustable height and hoop diameter for reducing the resistance of trolley air pipe comprises an adjustable height column system, the upper end of the adjustable height column system is fixedly connected with an adaptive hoop diameter system, and the lower end is fixedly connected with a moving system; the adaptive hoop diameter system comprises an annular support frame and a variable diameter device, the variable diameter device is installed at the middle position of the bottom of the annular support frame; the annular support frame is composed of a left variable diameter arc-shaped rod and a right variable diameter arc-shaped rod partially overlapping, the bottom surface of the left variable diameter arc-shaped rod is provided with radius adjusting teeth; the variable diameter device can adjust the diameter of the annular support frame.

[0007] Preferably, the height-adjustable column system comprises a telescopic steel pipe structure and a clamping device, the clamping device is arranged outside the telescopic steel pipe structure, and the telescopic steel pipe structure is provided with plug hole positions distributed at equal intervals on each level column.

[0008] Preferably, the bottom of the self-adaptive diameter clamping system is provided with a flat plate, and the two ends and the bottom of the annular support frame are fixed with the flat plate through telescopic support rods and flange plate connection structures respectively.

[0009] Preferably, the inside of the self-adaptive diameter clamping system is wrapped with a rubber lining, and the surface of the rubber lining has anti-skid lines.

[0010] Preferably, the diameter adjusting device comprises a hand wheel, a transmission device and a screw gear, the hand wheel is connected with the transmission device, the screw gear is fixed to the transmission device and engaged with the radius adjusting teeth on the bottom surface of the left diameter adjusting arc-shaped rod.

[0011] Preferably, the moving system comprises a brake device and a universal wheel, and the brake device is installed on the universal wheel.

[0012] The beneficial effects of the utility model are as follows:

[0013] 1. Strong adaptability, the diameter clamping range can be adjusted through the diameter adjusting device, and the air pipe of different diameters can be applied;

[0014] 2. The rubber wear-resistant layer inside the self-adaptive diameter clamping system can protect the air pipe, reduce the damage caused by the movement of the trolley, and reduce the air pipe loss;

[0015] 3. High overall operation efficiency, the time for position adjustment of the air pipe can be shortened. DRAWINGS

[0016] In order to more clearly illustrate the technical scheme of the embodiments of the utility model, the following will briefly introduce the drawings needed to be used in the description of each component system, and obviously, the drawings in the following description are only some embodiments of the utility model, and for those skilled in the art, other drawings can also be obtained according to these drawings without creative labor.

[0017] Figure 1 It is the overall structure schematic diagram of the utility model;

[0018] Figure 2 It is the enlarged schematic diagram of the moving system of the utility model;

[0019] Figure 3 It is the height-adjustable column system diagram of the utility model;

[0020] Figure 4 It is the self-adaptive diameter clamping system diagram of the utility model;

[0021] Figure 5 The variable diameter device of the utility model.

[0022] The reference signs are as follows: 1-height adjustable column system, 2-self-adapting hoop diameter system, 3-moving system, 4-telescopic support rod, 5-rectangular reinforcing frame, 6-fixed reinforcing bar, 7-brake device, 8-omni-directional wheel, 9-fixed thread, 10-connection plate, 11-spiral structure, 12-telescopic steel pipe structure, 13-bolt hole position, 14-clamping device, 15-left variable diameter arc-shaped rod piece, 16-flange plate connection structure, 17-variable diameter device, 18-flat plate, 19-hand wheel, 20-transmission device, 21-right variable diameter arc-shaped rod piece, 22-annular support frame, 23-screw gear. DETAILED DESCRIPTION

[0023] In order to make the purpose, technical scheme and advantages of the present application more clear, the present application is further described in detail below with reference to the drawings and examples.

[0024] According to Figures 1 to 5 As shown in the figure, the utility model provides a kind of adjustable height, hoop diameter movable support frame for reducing trolley air pipe resistance, including adjustable height column system 1, adjustable height column system 1 upper end is fixedly connected with self-adapting hoop diameter system 2, and lower end is fixedly connected with moving system 3;Self-adapting hoop diameter system 2 includes annular support frame 22 and variable diameter device 17, and variable diameter device 17 is installed in annular support frame 22 bottom middle position;Annular support frame 22 is partly overlapped and is formed by left variable diameter arc-shaped rod piece 15 and right variable diameter arc-shaped rod piece 21, and the bottom surface of left variable diameter arc-shaped rod piece 15 is equipped with radius adjusting tooth;Variable diameter device 17 can be adjusted to annular support frame 22;

[0025] Specifically, self-adapting hoop diameter system 2, adjustable height column system 1 and moving system 3 are sequentially fixedly connected from top to bottom;Self-adapting hoop diameter system is composed of aluminum alloy variable diameter arc-shaped rod piece annular support frame 22, and fixed reinforcing bar 6 is used to connect into receiving device between frame, for fixing air pipe, wherein left variable diameter arc-shaped rod piece 15 is equipped with radius adjusting tooth, and hoop diameter stepless adjustment can be realized by rotating hand wheel 19;Adjustable height column system 1 adopts three-stage telescopic steel pipe structure, and each column is made of Q235B steel pipe with wall thickness of 4mm, and support frame height can be adjusted;Moving system 3 includes rectangular reinforcing frame 5 welded by Q235 reinforcing bar with diameter of Φ40mm, and four corners of rectangular reinforcing frame 5 bottom are connected with omni-directional wheel 8 by spiral structure 11, and moving and fixing of support frame can be realized by moving system 3.

[0026] As Figure 3As shown, the height-adjustable column system 1 includes a telescopic steel pipe structure 12 and a clamping device 14, the clamping device 14 is wrapped outside the telescopic steel pipe structure 12, and the telescopic steel pipe structure 12 is provided with plug hole positions 13 distributed at equal intervals on each level of the column;

[0027] Specifically, the adjacent hole positions on the telescopic steel pipe structure 12 are spaced 50mm apart, and accurate height positioning of ±5cm can be achieved; by pulling out the plug, stretching or compressing the column to the target height, inserting the plug into the aligned plug hole position 13 after the target height is reached, and using the clamping device 14 to assist in fixing, the stability of the column can be ensured, and accurate positioning of the support frame height can be achieved.

[0028] As shown in Figure 1 , Figure 4 As shown, the bottom of the adaptive hoop diameter system 2 is provided with a flat plate 18, and the two ends and the bottom of the annular support frame 22 are fixed with the flat plate 18 through the telescopic support rod 4 and the flange connection structure 16 respectively; the inside of the adaptive hoop diameter system 2 is wrapped with a rubber lining, and the surface of the rubber lining has anti-skid lines;

[0029] Specifically, the flat plate 18 is fixed with the height-adjustable column system 1 through 4 groups of bolts to ensure the overall stability of the support frame, so as to fix and place the air pipe and avoid shaking of the air pipe; wherein the inside of the adaptive hoop diameter system 2 is wrapped with a 5mm thick neoprene rubber wear-resistant layer with a Shore hardness of 60±5, and anti-skid lines are processed on the surface of the wear-resistant layer, so that the annular support frame 22 can be as closely fitted with the air pipe as possible to avoid the air pipe from slipping down, which can not only reduce the vibration noise of the air pipe, but also prevent the wear of the pipe wall, and can adapt to the high humidity environment in the tunnel.

[0030] As shown in Figure 5 By rotating the hand wheel 19 to drive the transmission device 20, the screw gear 23 can be driven to rotate, and the left variable-diameter arc-shaped rod 15 meshing with the screw gear 23 can be moved radially, so that the annular support frame 22 can realize stepless adjustment of the hoop diameter, and the air pipe with different diameters can be fixed.

[0031] As shown in Figure 2 The moving system 3 is equipped with a brake device 7 and a universal wheel 8, the brake device 7 is installed on the universal wheel 8, which can improve the stability and moving ability of the support frame, wherein when the brake torque is greater than or equal to 15N·m, the overall anti-overturning coefficient of the support frame can reach more than 1.5 times of the safety capacity.

[0032] The working principle of the utility model is as follows: when the tunnel construction is pushed forward, first loosen the brake device 7, push the support frame to the new working position, fix the column to the required working height by the plug, adjust the hand wheel 19 to make the rubber lining fully contact with the outer wall of the air pipe, and complete the stable placement of the air pipe, then open the brake device 7 to fix the whole support frame, the whole process can be completed independently by one person, and the ventilation system does not need to be interrupted.

[0033] Specifically, the complete support frame assembled by the above technical scheme can adapt to various tunnel sections from horseshoe shape to rectangle, while ensuring that the force around the air pipe is uniform, and the buffer wear-resistant layer is made of wear-resistant rubber material, which can effectively absorb the vibration energy of the air pipe. Through the utility model, the problems of disordered air pipe arrangement, winding damage and large wind loss at the trolley in the tunnel can be improved, the ventilation efficiency in the hole is improved, the air quality in the hole is improved, the physical health of the construction personnel is protected, and a more comfortable environment is provided for the on-site construction personnel.

[0034] The utility model and its implementation mode are described above, and this description is not restrictive, and the embodiment shown in the drawings is only one of the embodiments of the utility model, and the actual structure is not limited thereto. In summary, if a person skilled in the art is inspired thereby, without departing from the creative purpose of the utility model, similar structural modes and embodiments are not creatively designed, which should belong to the protection scope of the utility model.

Claims

1. An adjustable height, adjustable diameter mobile support frame for reducing the resistance of a trolley air hose, comprising an adjustable height column system (1), characterized in that, The adjustable height column system (1) is fixedly connected with the adaptive hoop diameter system (2) at the upper end and fixedly connected with the moving system (3) at the lower end. The adaptive hoop diameter system (2) comprises a ring-shaped support frame (22) and a variable diameter device (17), and the variable diameter device (17) is installed at the middle position of the bottom of the ring-shaped support frame (22). The ring-shaped support frame (22) is composed of a left variable diameter arc-shaped rod (15) and a right variable diameter arc-shaped rod (21) partially overlapped, and the bottom surface of the left variable diameter arc-shaped rod (15) is provided with radius adjusting teeth. The variable diameter device (17) can adjust the diameter of the ring-shaped support frame (22).

2. The height and diameter adjustable mobile support frame for reducing the resistance of the wind pipe of the trolley according to claim 1, characterized in that, The adjustable height column system (1) comprises a telescopic steel pipe structure (12) and a clamping device (14), the clamping device (14) is wrapped around the outside of the telescopic steel pipe structure (12), and each level of the column of the telescopic steel pipe structure (12) is provided with plug hole positions (13) distributed at equal intervals.

3. The height and diameter adjustable mobile support frame for reducing the resistance of the trolley air hose according to claim 1, wherein, The bottom of the adaptive hoop diameter system (2) is provided with a flat plate (18), and the two ends and the bottom of the ring-shaped support frame (22) are fixedly connected with the flat plate (18) through the telescopic support rods (4) and the flange plate connection structure (16) respectively.

4. The height and diameter adjustable mobile support frame for reducing the resistance of the dolly air hose according to claim 3, wherein, The inside of the adaptive hoop diameter system (2) is wrapped with a rubber gasket, and the surface of the rubber gasket has anti-skid lines.

5. The height adjustable, diameter clamping, mobile support frame for reducing the resistance of the wind pipe of the trolley according to claim 1, characterized in that, The variable diameter device (17) comprises a hand wheel (19), a transmission device (20) and a screw gear (23), the hand wheel (19) is connected with the transmission device (20), the screw gear (23) is fixed to the transmission device (20) and engaged with the radius adjusting teeth on the bottom surface of the left variable diameter arc-shaped rod (15).

6. The height adjustable, diameter clamping, mobile support frame for reducing the resistance of the wind pipe of the trolley according to claim 1, characterized in that, The moving system (3) comprises a brake device (7) and a universal wheel (8), and the brake device (7) is installed on the universal wheel (8).

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