A novel support arch frame for weakly cemented soft rock tunnels

Abstract

This utility model discloses a novel support arch frame for weakly cemented soft rock roadways, comprising a lifting mechanism, a spreading mechanism, and a controller. The lifting mechanism is used to change the height of the spreading mechanism, and the spreading mechanism is used to change the width of the arch frame, facilitating adjustment according to the roadway width. The lifting mechanism is located below the spreading mechanism. The lifting mechanism comprises two sets, each including a housing that is a hollow rectangular shell with an open lower section. Sliding sleeves are fixedly connected to both ends of the upper side of the housing. Two vertical rods of a support frame are slidably connected to the sliding sleeves. Electric push rods are fixedly connected to the middle sections of the support frame, and the telescopic rods of the electric push rods are fixedly connected to the housing. This utility model allows the top plate and two side plates to be unfolded and raised, achieving roadway support.

Description

Technical Field

[0001] This utility model relates to the field of support technology, and in particular to a novel support arch frame for weakly cemented soft rock roadways. 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, which facilitates the adjustment of the support frame's height. However, in actual use, when it is necessary to adjust the height of the support frame, it is necessary to pay attention to rotating multiple knobs. During the rotation process, it is impossible to ensure that the knobs rotate consistently, which can cause inconsistencies in height. Multiple adjustments are required, making the overall structure difficult to install, time-consuming, and resulting in low support efficiency and affecting the construction period.

[0005] Therefore, it is necessary to provide a new type of support arch frame for weakly cemented soft rock roadways 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 novel support arch frame for weakly cemented soft rock roadways.

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

[0008] A novel support arch frame for weakly cemented soft rock roadways, comprising a lifting mechanism, a bracing mechanism, and a controller, is characterized by:

[0009] The lifting mechanism is used to change the height of the expansion mechanism, and the expansion mechanism is used to change the width of the arch frame, so as to facilitate adjustment according to the width of the roadway. The lifting mechanism is located at the lower part of the expansion mechanism.

[0010] The lifting mechanism is provided in two sets. The lifting mechanism includes a housing, which is a hollow rectangular housing with an open lower part. The upper two ends of the housing are respectively fixed and connected to the sliding sleeves. The two vertical rods of the support frame are respectively slidably connected to the sliding sleeves. The support frame is respectively fixedly connected to the electric push rods, and the telescopic rod of the electric push rod is fixedly connected to the housing.

[0011] Preferably, the expansion mechanism includes a U-shaped support plate, the U-shaped support plate being movably connected to the end of a reverse lead screw, the reverse lead screw having two sections of threads with opposite helical directions, the end of the reverse lead screw being fixedly connected to a geared motor shaft, the geared motor being fixedly connected to the end of the U-shaped support plate, the two ends of the reverse lead screw being threadedly connected to internal thread blocks, the two internal thread blocks being fixedly connected to the middle of square plates, the two square plates being respectively provided with inclined grooves, the inclined grooves being slidably connected to round shafts, the round shafts being fixedly connected to the upper part of cross-shaped sliders, the cross-shaped sliders being slidably connected to cross-shaped grooves, the cross-shaped grooves being provided on the cross plate of the U-shaped support plate, the lower side of the cross-shaped sliders being fixedly connected to support plates, and the ends of the support plates being fixedly connected to the corresponding support frames.

[0012] Preferably, sleeves are fixedly connected to the upper sides of both ends of the U-shaped support plate, the sleeves are slidably connected to guide rods, the upper ends of the guide rods are fixedly connected to the top plate, the two sides of the top plate are hinged to the side plates, and the lower sides of the side plates are hinged to the upper side of the support frame.

[0013] Preferably, both the top plate and the side plate are arc-shaped plates, and the upper two ends of the top plate are respectively fixedly connected to limit plates.

[0014] Preferably, casters are fixedly connected to the lower side of the support frame.

[0015] Preferably, the controller is electrically connected to the electric push rod and the geared motor via wires.

[0016] Compared with related technologies, the beneficial effects of this utility model are: when the caster is in the lower part of the housing, it can push the device to move in the tunnel; when the caster moves to the middle of the housing, the lower side of the housing contacts the ground, and the housing supports the entire device.

[0017] The side panels swing to both sides, increasing the support area of ​​the top panel and the two side panels. By controlling the geared motor and electric push rod, the arch frame can be erected quickly, reducing time and effort. Similarly, it can be quickly stored, thus reducing space and facilitating transportation. Workers can walk through the space under the arch frame, enhancing its practicality. Attached Figure Description

[0018] Figure 1 This is a three-dimensional illustration of the present invention. Figure 1 .

[0019] Figure 2 This is a three-dimensional illustration of the present invention. Figure 2 .

[0020] Figure 3 This is a schematic diagram of the connection structure between the shell and the sliding sleeve of this utility model after being cut apart and some parts.

[0021] Figure 4 This is a schematic diagram of the connection structure between the U-shaped support plate of this utility model and some of its components after cross-section. Figure 1 .

[0022] Figure 5 For the present utility model Figure 4 Enlarged view of a portion of point A in the middle.

[0023] Figure 6 This is a schematic diagram of the connection structure between the U-shaped support plate of this utility model and some of its components after cross-section. Figure 2 .

[0024] In the picture:

[0025] 1: Lifting mechanism; 11: Housing; 12: Sliding sleeve; 13: Support frame; 14: Electric push rod; 15: Casters.

[0026] 2: Expansion support mechanism, 21. U-shaped support plate, 22. Reverse lead screw, 23. Internal thread block, 24. Sleeve, 25. Guide rod, 26. Top plate, 27. Square plate, 28. Limiting plate, 29. Side plate, 210. Gear motor, 211. Inclined groove, 212. Round shaft, 213. Cross-shaped slider, 214. Support plate, 215. Cross-shaped slide groove; 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 novel support arch frame for weakly cemented soft rock roadways includes a lifting mechanism 1, a spreading mechanism 2, and a controller 3. The lifting mechanism 1 is used to change the height of the spreading mechanism 2, and the spreading mechanism 2 is used to change the width of the arch frame, so as to facilitate adjustment according to the width of the roadway. The lifting mechanism 1 is located at the lower part of the spreading mechanism.

[0029] The lifting mechanism 1 is provided in two sets. The lifting mechanism 1 includes a housing 11, which is a hollow rectangular housing with an open lower part. The upper two ends of the housing 11 are respectively fixedly connected to the sliding sleeves 12. The two vertical rods of the support frame 13 are respectively slidably connected to the sliding sleeves 12. The middle part of the support frame 13 is respectively fixedly connected to the electric push rods 14. The telescopic rod of the electric push rods 14 is fixedly connected to the housing 11.

[0030] The expansion mechanism 2 includes a U-shaped support plate 21, which is movably connected to the end of a reverse lead screw 22. The reverse lead screw 22 has two sections of threads with opposite helical directions. The end of the reverse lead screw 22 is fixedly connected to the shaft of a reduction motor 210. The reduction motor 210 is fixedly connected to the end of the U-shaped support plate 21. The two ends of the reverse lead screw 22 are respectively threaded to internal thread blocks 23. The two internal thread blocks 23 are respectively fixedly connected to the middle of square plates 27. The two square plates 27 are respectively provided with inclined grooves 211. The inclined grooves 211 are slidably connected to round shafts 212. The round shafts 212 are respectively fixedly connected to the upper part of cross-shaped sliders 213. The cross-shaped sliders 213 are slidably connected in cross-shaped grooves 215. The cross-shaped grooves 215 are set on the horizontal plate of the U-shaped support plate 21. The lower side of the cross-shaped sliders 213 is respectively fixedly connected to support plates 214. The ends of the support plates 214 are respectively fixedly connected to the corresponding support frames 13.

[0031] Sleeves 24 are fixedly connected to the upper sides of both ends of the U-shaped support plate 21. The sleeves 24 are slidably connected to guide rods 25. The upper ends of the guide rods 25 are fixedly connected to top plates 26. The top plates 26 are hinged to side plates 29 on both sides. The lower sides of the side plates 29 are hinged to the upper side of the support frame 13.

[0032] The swinging of the side panels 29 to both sides increases the support area of ​​the top plate 26 and the two side panels 29. By controlling the reduction motor 210 and the electric push rod 14, the arch frame can be erected quickly, reducing time and effort. Similarly, it can be quickly stored, thus reducing space and facilitating transportation. Workers can walk through the space under the arch frame, enhancing its practicality.

[0033] Both the top plate 26 and the side plate 29 are arc-shaped plates, and the upper ends of the top plate 26 are respectively fixedly connected to the limiting plates 28.

[0034] Casters 15 are fixedly connected to the lower side of the support frame 13.

[0035] When the caster 15 is located at the lower part of the housing 11, it can push the device to move in the tunnel. When the caster 15 moves to the middle of the housing 11, the lower side of the housing 11 contacts the ground, and the housing 11 provides support for the entire device.

[0036] The controller 3 is electrically connected to the electric push rod 14 and the geared motor 210 via wires.

[0037] Working principle: The initial state of this device is as follows Figure 1 As shown, the two side plates 29 are in a retracted state, and the casters 15 extend from the lower part of the housing 11 to push the device into the tunnel that needs support. The controller 3 is electrically connected to an external power source. The controller 3 controls the geared motor 210 to drive the reverse screw 22 to rotate. The reverse screw 22 drives the two square plates 27 to move closer to each other through the internal thread block 23. The inclined grooves 211 on the two square plates 27 push the round shaft 212 to move away from each other. The round shaft 212 drives the cross-shaped slider 213 to slide along the cross-shaped groove 215. The cross-shaped slider 213 drives the support frame 13 to move further away from each other through the support plate 214. The support frame 13 drives the side plates 29 to swing. The side plates 29 drive the top plate 26 to move upward. The top plate 26 drives the guide rod 25 to move upward along the sleeve 24. When the side plates 29 are in contact with the limiting plate 28, the control geared motor 210 stops rotating, and the side plates 29 swing to both sides, increasing the support area of ​​the top plate 26 and the two side plates 29.

[0038] Then, the controller 3 controls the extension rod of the electric push rod 14 to extend and drive the housing 11 to move downward. The sliding sleeve 12 slides along the support frame 13, so that the caster 15 moves to the middle of the housing 11. The lower side of the housing 11 contacts the ground and stops moving. The reverse force causes the support frame 13 to move upward. The support frame 13 drives the expansion mechanism 2 to move upward. When the top plate 26 contacts the top of the roadway, the electric push rod 14 is turned off.

[0039] Beneficial effects: When the caster 15 is located at the lower part of the housing 11, it can push the device to move in the tunnel. When the caster 15 moves to the middle of the housing 11 and the lower side of the housing 11 contacts the ground, the housing 11 provides support for the entire device.

[0040] The swinging of the side plate 29 to both sides increases the support area of ​​the top plate 26 and the two side plates 29. By controlling the reduction motor 210 and the electric push rod 14, the arch frame can be erected quickly, reducing time and effort. Similarly, it can be quickly stored, thereby reducing space and facilitating transportation. Workers can walk through the space under the arch frame, enhancing its practicality.

[0041] 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 novel support arch frame for weakly cemented soft rock roadways, comprising a lifting mechanism (1), a support mechanism (2), and a controller (3), characterized in that: The lifting mechanism (1) is used to change the height of the expansion mechanism (2), and the expansion mechanism (2) is used to change the width of the arch frame, so as to facilitate adjustment according to the width of the roadway. The lifting mechanism (1) is located at the lower part of the expansion mechanism. The lifting mechanism (1) is provided in two sets. The lifting mechanism (1) includes a housing (11). The housing (11) is a hollow rectangular housing with an open lower part. The upper two ends of the housing (11) are respectively fixedly connected to the sliding sleeve (12). The two vertical rods of the support frame (13) are respectively slidably connected to the sliding sleeve (12). The middle part of the support frame (13) is respectively fixedly connected to the electric push rod (14). The telescopic rod of the electric push rod (14) is fixedly connected to the housing (11).

2. The novel support arch frame for weakly cemented soft rock roadways according to claim 1, characterized in that, The expansion mechanism (2) includes a U-shaped support plate (21), which is movably connected to the end of a reverse lead screw (22). The reverse lead screw (22) has two sections of threads with opposite helical directions. The end of the reverse lead screw (22) is fixedly connected to the shaft of a reduction motor (210), which is fixedly connected to the end of the U-shaped support plate (21). Both ends of the reverse lead screw (22) are threadedly connected to internal thread blocks (23), and the two internal thread blocks (23) are fixedly connected to the middle of a square plate (27). The square plate (27) is provided with inclined grooves (211), and a round shaft (212) is slidably connected in the inclined groove (211). The round shaft (212) is fixedly connected to the upper part of the cross-shaped slider (213). The cross-shaped slider (213) is slidably connected in the cross-shaped groove (215). The cross-shaped groove (215) is set on the horizontal plate of the U-shaped support plate (21). The lower side of the cross-shaped slider (213) is fixedly connected to the support plate (214). The ends of the support plate (214) are fixedly connected to the corresponding support frame (13).

3. The novel support arch frame for weakly cemented soft rock roadways according to claim 2, characterized in that, The upper sides of the two ends of the U-shaped support plate (21) are respectively fixedly connected to sleeves (24), the sleeves (24) are slidably connected to guide rods (25), the upper ends of the guide rods (25) are respectively fixedly connected to top plate (26), the two sides of the top plate (26) are respectively hinged to side plates (29), and the lower side of the side plates (29) is respectively hinged to the upper side of the support frame (13).

4. The novel support arch frame for weakly cemented soft rock roadways according to claim 3, characterized in that, Both the top plate (26) and the side plate (29) are arc-shaped plates, and the upper ends of the top plate (26) are respectively fixedly connected to limit plates (28).

5. The novel support arch frame for weakly cemented soft rock roadways according to claim 4, characterized in that, The support frame (13) is fixedly connected to the caster (15) on the lower side.

6. The novel support arch frame for weakly cemented soft rock roadways according to claim 2, characterized in that, The controller (3) is electrically connected to the electric push rod (14) and the geared motor (210) via wires.

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