A telescopic weakly cemented soft rock roadway supporting structure

Abstract

The utility model discloses a telescopic weak cementation soft rock roadway supporting structure, including unfolding mechanism lifting mechanism and controller, its characterized in that: the upper portion of lifting mechanism is equipped with the unfolding mechanism, lifting mechanism is used for adjusting the height of unfolding mechanism, unfolding mechanism is used for adjusting the support area, lifting mechanism includes two support frames, the upper side middle part screw thread connection lead screw of support frame, the upper end swing joint of lead screw lifts the plate, the upper side fixed connection worm and gear reducer no.

Description

Technical Field

[0001] This utility model relates to the field of tunnel support technology, and in particular to a retractable support structure for weakly cemented soft rock tunnels. Background Technology

[0002] Roadways are various passages drilled between the surface and the ore body, used for ore transportation, ventilation, drainage, pedestrian access, and various necessary preparatory works for new mining operations for metallurgical equipment. When processing underground roadways, it is necessary to reinforce them, especially when the roadway passes through weakly cemented soft rock. Because weakly cemented soft rock is relatively fragile, support devices are needed to provide auxiliary support for the underground roadway.

[0003] According to Chinese patent document CN219865073U, a tunnel support structure includes two sets of adjustment mechanisms. A support mechanism is installed on the top of each of the two sets of adjustment mechanisms. Each support mechanism includes two support frames, each mounted on top of each set of adjustment mechanisms. Support screws are installed at both ends of the bottom of each support frame. Three mounting blocks are installed around the top periphery of each support frame. Two fixing holes are formed through the upper and lower ends of each mounting block. A fixing plate is installed between the bottoms of the mounting blocks of the two support frames. A support plate is installed on the top of the fixing plate. Fixing elements are installed through the upper and lower ends of the mounting blocks and the fixing plate and within the fixing holes. The main viewing surface of the support frame is semi-circular.

[0004] Based on the search of the aforementioned patents and in conjunction with existing tunnel support structures, it was found that when using the aforementioned support structure, a knob is used to raise the support screw and support frame by rotating the knob, making it easy to adjust the support frame height. However, in actual use, when adjusting the support frame height, it is necessary to rotate multiple knobs, and during the rotation process, it is impossible to ensure that the knobs rotate consistently, which can cause inconsistencies in height, requiring multiple adjustments. Furthermore, the support screw bears most of the force during use, which can lead to damage to the support screw, affecting the adjustment adaptability of the support screw, and thus reducing its practicality.

[0005] Therefore, it is necessary to provide a retractable support structure for weakly cemented soft rock tunnels to solve the above-mentioned technical problems. Utility Model Content

[0006] The purpose of this utility model is to address the shortcomings of existing technologies by proposing a retractable support structure for weakly cemented soft rock tunnels.

[0007] To achieve the above objectives, the present invention adopts the following technical solution:

[0008] A retractable support structure for weakly cemented soft rock tunnels, comprising an unfolding mechanism, a lifting mechanism, and a controller, characterized in that:

[0009] The upper part of the lifting mechanism is provided with the unfolding mechanism. The lifting mechanism is used to adjust the height of the unfolding mechanism, and the unfolding mechanism is used to adjust the support area.

[0010] The lifting mechanism includes two support frames. A lead screw is threadedly connected to the upper center of the support frame. A lifting plate is movably connected to the upper end of the lead screw. A worm gear reducer is fixedly connected to the upper side of the lifting plate.

[0011] Preferably, the worm shaft ends of the two worm gear reducers are respectively fixedly connected to the ends of the transmission rods, the worm shaft of one of the worm gear reducers is fixedly connected to the rotating shaft of the motor, the motor is fixedly connected to the housing of the corresponding worm gear reducer, the worm shaft ends of the two worm gear reducers are respectively fixedly connected to the lead screw, the lower ends of the lifting plate are respectively fixedly connected to the guide rods, the guide rods are slidably connected to the guide cylinders, the guide cylinders pass through and are fixedly connected to the upper side of the corresponding support frame, and the lower ends of the guide rods on the same side are respectively fixedly connected to the support plates.

[0012] Preferably, the unfolding mechanism includes a U-shaped bracket, which is fixedly connected to the upper side of the lifting plate. A slide rail is fixedly connected to the upper part of the U-shaped bracket. Each slide rail is slidably connected to two sliders. A reverse screw is threaded to the sliders. The ends of the reverse screw are movably connected to both ends of the U-shaped bracket. The reverse screw has two sections of threads with opposite helical directions.

[0013] Preferably, one end of the reverse lead screw is fixedly connected to the worm wheel shaft end of the second worm gear reducer, the housing of the second worm gear reducer is fixedly connected to the U-shaped bracket, the worm wheel shaft end of the second worm gear reducer is fixedly connected to the second motor, and the second motor is fixedly connected to the housing of the second worm gear reducer.

[0014] Preferably, the upper side of the slider is hinged to a connecting plate, the upper end of the connecting plate is hinged to a rectangular plate via a pin, the two sides of the rectangular plate are hinged to the rectangular plate via hinges, the lower side of the rectangular plate is fixedly connected to a support column, and the support column is fixedly connected to the lifting plate.

[0015] Preferably, omnidirectional wheels are fixedly installed on the lower side of the support plate, and a rectangular opening is provided on the lower side of the support frame. The external dimensions of the support plate and the omnidirectional wheels are smaller than the size of the rectangular opening.

[0016] Preferably, a controller is fixedly connected to one side of the support frame, and the controller is electrically connected to the first motor and the second motor via wires.

[0017] Compared with related technologies, the beneficial effects of this utility model are: when the caster is at the lower part of the support frame, it can push the device to move in the tunnel; when the caster moves to the middle of the support frame, the lower side of the support frame contacts the ground, and the support frame supports the entire device.

[0018] The rectangular panels can remain unfolded, thereby increasing the support area and allowing for rapid erection, reducing time and effort. Similarly, they can be quickly folded up, further reducing space and facilitating transportation. Workers can walk through the middle of the lifting mechanism, enhancing practicality. Attached Figure Description

[0019] Figure 1 This is a three-dimensional illustration of the present invention. Figure 1 .

[0020] Figure 2 This is a three-dimensional illustration of the present invention. Figure 2 .

[0021] Figure 3 This is a schematic diagram of the worm gear reducer of this utility model after being cut open and connected to some parts.

[0022] Figure 4 This is a schematic diagram of the connection structure of some parts of this utility model.

[0023] In the picture:

[0024] 1: Deployment mechanism; 11: U-shaped bracket; 12: Slide rail; 13: Slider; 14: Reverse lead screw; 15: Connecting plate; 16: Support column; 17: Square plate; 18: Rectangular plate; 19: Worm gear reducer II; 110: Motor II.

[0025] 2: Lifting mechanism, 21. Support frame, 22. Casters, 23. Support plate, 24. Guide rod, 25. Guide cylinder, 26. Lifting plate, 27. Transmission rod, 28. Motor 1, 29. Worm gear reducer 1, 210. Lead screw, 211. Rectangular opening;

[0026] 3: Controller. Detailed Implementation

[0027] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments.

[0028] A retractable support structure for weakly cemented soft rock roadways includes an unfolding mechanism 1, a lifting mechanism 2, and a controller 3. The lifting mechanism 2 is equipped with the unfolding mechanism 1 on its upper part. The lifting mechanism 2 is used to adjust the height of the unfolding mechanism 1, and the unfolding mechanism 1 is used to adjust the support area.

[0029] The lifting mechanism 2 includes two support frames 21. The upper middle part of the support frame 21 is threadedly connected to a lead screw 210. The upper end of the lead screw 210 is movably connected to a lifting plate 26. The upper side of the lifting plate 26 is fixedly connected to a worm gear reducer 29.

[0030] The worm shaft ends of the two worm gear reducers 29 are respectively fixedly connected to the ends of the transmission rods 27. The worm shaft of one of the worm gear reducers 29 is fixedly connected to the rotating shaft of the motor 28. The motor 28 is fixedly connected to the housing of the corresponding worm gear reducer 29. The worm shaft ends of the two worm gear reducers 29 are respectively fixedly connected to the lead screws 210. The lower ends of the lifting plate 26 are respectively fixedly connected to the guide rods 24. The guide rods 24 are slidably connected to the guide cylinders 25. The guide cylinders 25 pass through and are fixedly connected to the upper side of the corresponding support frame 21. The lower ends of the guide rods 24 on the same side are respectively fixedly connected to the support plates 23.

[0031] The unfolding mechanism 1 includes a U-shaped bracket 11, which is fixedly connected to the upper side of the lifting plate 26. A slide rail 12 is fixedly connected to the upper part of the U-shaped bracket 11. Each slide rail 12 is slidably connected to two sliders 13. A reverse screw 14 is threadedly connected to the sliders 13. The ends of the reverse screw 14 are movably connected to both ends of the U-shaped bracket 11. The reverse screw 14 has two sections of threads with opposite helical directions.

[0032] One end of the reverse lead screw 14 is fixedly connected to the worm wheel shaft end of the worm gear reducer 19. The housing of the worm gear reducer 19 is fixedly connected to the U-shaped bracket 11. The worm wheel shaft end of the worm gear reducer 19 is fixedly connected to the motor 110. The motor 110 is fixedly connected to the housing of the worm gear reducer 19.

[0033] The upper side of the slider 13 is hinged to a connecting plate 15. The upper end of the connecting plate 15 is hinged to a rectangular plate 18 via a pin. The two sides of the square plate 17 are hinged to the rectangular plate 18. The lower side of the square plate 17 is fixedly connected to a support column 16, which is fixedly connected to the lifting plate 26. The rectangular plate 18 can remain unfolded, thereby increasing the support area and allowing for quick erection, reducing time and effort. Similarly, it can be quickly stored, thus reducing space and facilitating transportation.

[0034] The support plate 23 is fixedly equipped with casters 22 on its lower side. The support frame 21 has a rectangular opening 211 on its lower side. The external dimensions of the support plate 23 and the casters 22 are smaller than the size of the rectangular opening 211. When the casters 22 are located at the lower part of the support frame 21, they can push the device to move in the tunnel. When the casters 22 move to the middle of the support frame 21, the lower side of the support frame 21 contacts the ground, and the support frame 21 provides support for the entire device.

[0035] A controller 3 is fixedly connected to one side of the support frame 21. The controller 3 is electrically connected to the first motor 28 and the second motor 110 via wires.

[0036] Working principle: The initial state of this device is as follows Figure 1 As shown, the support plate 23 is located within the rectangular opening 211, the caster wheel 22 is located at the lower part of the support frame 21, and the rectangular plate 18 is in a retracted state. The device is pushed into the roadway that needs support. The controller 3 is electrically connected to an external power source. The controller 3 controls the motor 28 to drive the worm shaft of the corresponding worm gear reducer 29 to rotate. The worm shaft of the worm gear reducer 29 drives the worm shaft of another worm gear reducer 29 to rotate through the transmission rod 27. This causes the worm shaft ends of the two worm gear reducers 29 to drive the two lead screws 210 to rotate. The lead screws 210 drive the lifting plate 26, guide rod 24, and unfolding mechanism 1 to move upward, so that the caster wheel 22 moves to the middle of the support frame 21. The lower side of the support frame 21 contacts the ground. When the square plate 17 contacts the top of the roadway, the motor 28 is turned off.

[0037] Then, control the rotation of two motors 10. Motors 10 drive the corresponding reverse screws 14 to rotate through worm gear reducers 19. The reverse screws 14 drive the two sliders 13 to slide along the slide rail 12. The sliders 13 drive the connecting plate 15 to swing. The connecting plate 15 drives the two rectangular plates 18 to unfold to both sides. When the rectangular plates 18 contact the side of the roadway, motor 28 is turned off.

[0038] Beneficial effects: When the caster 22 is located at the lower part of the support frame 21, it can push the device to move in the tunnel. When the caster 22 moves to the middle of the support frame 21, the lower side of the support frame 21 contacts the ground, and the support frame 21 provides support for the entire device.

[0039] The rectangular plate 18 can remain unfolded, thereby increasing the support area and allowing for quick erection, reducing time and effort. Similarly, it can be quickly folded up, thus reducing space and facilitating transportation. Workers can walk through the middle of the lifting mechanism 2, enhancing its practicality.

[0040] The above description is only a preferred embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. Any equivalent substitutions or changes made by those skilled in the art within the technical scope disclosed in the present utility model, based on the technical solution and the inventive concept of the present utility model, should be included within the protection scope of the present utility model.

Claims

1. A retractable support structure for weakly cemented soft rock tunnels, comprising an unfolding mechanism (1), a lifting mechanism (2), and a controller (3), characterized in that: The lifting mechanism (2) is provided with the unfolding mechanism (1) on its upper part. The lifting mechanism (2) is used to adjust the height of the unfolding mechanism (1), and the unfolding mechanism (1) is used to adjust the support area. The lifting mechanism (2) includes two support frames (21). The upper middle part of the support frame (21) is threaded with a screw rod (210). The upper end of the screw rod (210) is movably connected to a lifting plate (26). The upper side of the lifting plate (26) is fixedly connected to a worm gear reducer (29).

2. The retractable weakly cemented soft rock tunnel support structure according to claim 1, characterized in that, The worm shaft ends of the two worm gear reducers (29) are respectively fixedly connected to the ends of the transmission rod (27). The worm shaft of one of the worm gear reducers (29) is fixedly connected to the rotating shaft of the motor (28). The motor (28) is fixedly connected to the housing of the corresponding worm gear reducer (29). The worm shaft ends of the two worm gear reducers (29) are respectively fixedly connected to the lead screw (210). The lower ends of the lifting plate (26) are respectively fixedly connected to the guide rod (24). The guide rod (24) is slidably connected to the guide cylinder (25). The guide cylinder (25) passes through and is fixedly connected to the upper side of the corresponding support frame (21). The lower ends of the guide rod (24) on the same side are respectively fixedly connected to the support plate (23).

3. The retractable weakly cemented soft rock tunnel support structure according to claim 2, characterized in that, The unfolding mechanism (1) includes a U-shaped bracket (11), which is fixedly connected to the upper side of the lifting plate (26). The upper part of the U-shaped bracket (11) is fixedly connected to a slide rail (12). Each slide rail (12) is slidably connected to two sliders (13). A reverse screw (14) is threadedly connected to the sliders (13). The ends of the reverse screw (14) are movably connected to both ends of the U-shaped bracket (11). The reverse screw (14) has two sections of threads with opposite spiral directions.

4. The retractable weakly cemented soft rock tunnel support structure according to claim 3, characterized in that, One end of the reverse lead screw (14) is fixedly connected to the worm wheel shaft end of the worm gear reducer II (19). The housing of the worm gear reducer II (19) is fixedly connected to the U-shaped bracket (11). The worm wheel shaft end of the worm gear reducer II (19) is fixedly connected to the motor II (110). The motor II (110) is fixedly connected to the housing of the worm gear reducer II (19).

5. The retractable weakly cemented soft rock tunnel support structure according to claim 4, characterized in that, The upper side of the slider (13) is hinged to the connecting plate (15), the upper end of the connecting plate (15) is hinged to the rectangular plate (18) by a pin, the two sides of the square plate (17) are hinged to the rectangular plate (18) by hinges, the lower side of the square plate (17) is fixedly connected to the support column (16), and the support column (16) is fixedly connected to the lifting plate (26).

6. The retractable weakly cemented soft rock tunnel support structure according to claim 2, characterized in that, The support plate (23) is fixedly installed with casters (22) on the lower side, and the support frame (21) has a rectangular opening (211) on the lower side. The external dimensions of the support plate (23) and the casters (22) are smaller than the size of the rectangular opening (211).

7. The retractable weakly cemented soft rock tunnel support structure according to claim 4, characterized in that, A controller (3) is fixedly connected to one side of the support frame (21), and the controller (3) is electrically connected to the first motor (28) and the second motor (110) through wires.

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