Stable support for coal mine underground tunneling

Abstract

The utility model relates to the technical field of coal mine underground tunneling protection, and discloses a stable support for coal mine underground tunneling, which comprises a support frame, an adjusting mechanism is arranged on the upper side of the support frame, a warning mechanism is arranged on the side surface of the support frame, and four universal wheels are fixedly connected to the bottom surface of the support frame; the adjusting mechanism comprises a lifting assembly and a protection assembly. The protection assembly is located above the lifting assembly. The lifting assembly comprises a supporting plate and two electric push rods, a through groove is formed in the outer side face of the supporting frame in a penetrating mode, and the electric push rods are located in the through groove. The height of the supporting plate is adjusted through the adjusting mechanism and the lifting assembly through the electric push rod, so that the height of the protection plate and the height of the buffer plate are adjusted, the protection assembly supports the top wall of the coal mine underground roadway through the protection plate, and meanwhile the angle of the protection plate is adjusted through the adjusting plate, so that the device adapts to the coal mine underground roadway top walls with different inclination angles; and the applicability and the supporting effect of the stable support on underground coal mine tunneling are improved.

Description

Technical Field

[0001] The utility model relates to the technical field of underground excavation protection in coal mines, in particular to a stable support for underground excavation in coal mines. Background Art

[0002] Coal mines are areas where humans mine coal resources in coal-rich mining areas. They are generally divided into underground coal mines and open-pit coal mines. When the coal seam is far from the surface, people generally choose to dig tunnels underground to mine coal. This is an underground coal mine. The excavation operation can provide good working conditions for the implementation of underground mining projects, so that mining equipment has enough safe and convenient working space and environment. During the excavation construction, the excavation equipment needs to act on the rock layer or soil, and then continue to move forward and open up space; during the excavation process, it is easy for the rock layer to become unstable or geological changes to occur. In severe cases, it will cause collapse or even greater safety accidents. Therefore, relevant personnel must also do a good job of support construction during excavation to prevent the top of the mine from collapsing and causing injuries.

[0003] According to a Chinese patent, a stable support for underground excavation in coal mines, with the publication number CN218324902U, includes a top guard plate and a sliding rail, a buffer plate is connected to the top of the top guard plate, damping columns are connected between the bottom sides of the buffer plate and the top wall of the top guard plate, the bottom of the buffer plate is hinged with linkage rods on both sides of the damping column, the top of the top guard plate is provided with fixed rods on both sides of the damping column, a slider is slidably sleeved on the fixed rod, the free end of the linkage rod is hinged to the top of the slider, a reset spring is sleeved on the side of the fixed rod close to the damping column, hydraulic telescopic columns are connected to both sides of the bottom of the top guard plate, the bottom of the hydraulic telescopic column is slidably connected to the top of the sliding rail, a plurality of sliding rails are provided, a plurality of sliding rails form a group, and two groups of hydraulic telescopic columns are provided on both sides of the sliding rail. Compared with the prior art, the utility model has the advantages of providing a stable support for underground excavation in coal mines that is convenient to follow the excavation movement and easy to use;

[0004] However, the existing device still has the following problems: the device uses a hydraulic telescopic column to adjust the position of the top guard plate and supports the tunnel top wall through the buffer plate, but the tunnel top walls of different mines have different inclination angles. Only by adjusting the height of the top guard plate, it is impossible to support the tunnel top walls with different inclination angles, resulting in a reduced support effect for underground coal mine excavation. Therefore, a stable support for underground coal mine excavation is proposed. Utility Model Content

[0005] The purpose of the utility model is to provide a stable support for underground excavation in a coal mine to solve the problems raised in the above-mentioned background technology.

[0006] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: A stable support for underground excavation in a coal mine, comprising a support frame, an adjustment mechanism is arranged on the upper side of the support frame, a warning mechanism is arranged on the side of the support frame, and four universal wheels are fixedly connected to the bottom surface of the support frame;

[0007] The adjustment mechanism includes a lifting component and a protection component;

[0008] The protection assembly is located above the lifting assembly;

[0009] The lifting assembly includes a support plate and two electric push rods, the outer side of the support frame is provided with a through slot, the electric push rod is located inside the through slot, the bottom surface of the electric push rod is fixedly connected to the bottom surface of the through slot, the top end surface of the output rod of the electric push rod passes through the inner wall of the through slot and extends to the top of the support frame, and the top end surface of the output rod of the electric push rod is fixedly connected to the bottom surface of the support plate;

[0010] The protective assembly includes a protective plate and a buffer plate, wherein the buffer plate is located above the protective plate, and a connecting frame, a rotating rod and three adjustment plates are arranged below the protective plate. A sliding groove is provided on the top surface of the support plate, and a motor, a threaded rod and a slide plate are arranged inside the sliding groove. The bottom surfaces of the three adjustment plates are hinged to the top surface of the slide plate, and the top surfaces of the three adjustment plates are hinged to the bottom surface of the protective plate.

[0011] Preferably, the bottom surface of the connecting frame is fixedly connected to the top surface of the supporting plate, the front end surface of the rotating rod is fixedly passed through the rear side surface of the protective plate and extends to the front side of the protective plate, the front and rear end surfaces of the rotating rod are rotatably connected to the inner side surface of the connecting frame through bearing seats respectively, and the rotating rod facilitates the rotation of the protective plate, thereby realizing the angular deflection of the protective plate.

[0012] Preferably, the bottom surface of the buffer plate is fixedly connected to the top surface of the protective plate. The buffer plate is made of rubber material. The buffer plate can protect the protective plate from impact, and the buffer plate further prevents the top stones from sliding and causing injuries to personnel.

[0013] Preferably, the thread on the left end face of the threaded rod passes through the right side of the skateboard and extends to the left side of the skateboard. The bottom surface of the skateboard is slidably connected to the bottom surface inside the slide groove. The threaded rod can easily drive the skateboard to slide inside the slide groove, thereby facilitating the angle adjustment of the protective plate.

[0014] Preferably, the right side surface of the motor is fixedly connected to the right side surface inside the slide groove, the left end surface of the motor output rod is fixedly connected to the right end surface of the threaded rod, and the left end surface of the threaded rod is rotatably connected to the left side surface inside the slide groove through a bearing seat, and the motor provides power for the rotation of the threaded rod.

[0015] Preferably, the warning mechanism includes a connecting plate, the rear side of the connecting plate is fixedly connected to the front of the support frame, the front of the connecting plate is provided with a placement groove, a warning sign is arranged inside the placement groove, two warning lights are installed on the front of the warning sign, a warning sign is arranged between the two warning lights, and the warning sign and the warning light are used for warning.

[0016] Preferably, a mounting plate is fixedly connected to the front of the warning sign, and the inner wall of the mounting plate is threadedly connected to the inner wall of the connecting plate by bolts. The mounting plate facilitates installation and removal of the warning sign, thereby facilitating replacement of the warning sign.

[0017] Compared with the prior art, the beneficial effects of the utility model are as follows: the stable support for underground coal mine excavation, through the adjustment mechanism, the lifting component uses an electric push rod to adjust the height of the support plate, thereby adjusting the height of the protective plate and the buffer plate, the protective component uses the protective plate to support the top wall of the underground coal mine tunnel, and at the same time the adjustment plate adjusts the angle of the protective plate to adapt to the top wall of the underground coal mine tunnel with different inclination angles, thereby improving the applicability and support effect of the stable support for underground coal mine excavation; through the warning mechanism, the mounting plate facilitates the installation and disassembly of the warning sign, and the warning light and warning sign on the warning sign are convenient for warning the underground coal mine tunnel, avoiding workers from hitting the stable support. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 This is a front cutaway stereoscopic view of the utility model;

[0019] Figure 2 This is a main stereoscopic view of the utility model;

[0020] Figure 3 It is a left-side stereogram of the utility model;

[0021] Figure 4 It is a sectional perspective view of the left side of the rotating rod of the utility model;

[0022] Figure 5 This is a main stereoscopic diagram of the warning sign of the utility model.

[0023] In the figure: support frame 1, adjustment mechanism 2, electric push rod 201, support plate 202, protective plate 203, buffer plate 204, connecting frame 205, rotating rod 206, motor 207, threaded rod 208, slide plate 209, adjustment plate 210, warning mechanism 3, connecting plate 301, warning sign 302, mounting plate 303, warning light 304, universal wheel 4. DETAILED DESCRIPTION

[0024] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0025] Embodiment 1

[0026] See also Figure 1 - Figure 5 The utility model provides a technical solution: a stable support for underground excavation in a coal mine, comprising a support frame 1, an adjustment mechanism 2 is arranged on the upper side of the support frame 1, a warning mechanism 3 is arranged on the side of the support frame 1, and four universal wheels 4 are fixedly connected to the bottom surface of the support frame 1;

[0027] The adjustment mechanism 2 includes a lifting component and a protection component;

[0028] The protection assembly is located above the lifting assembly;

[0029] The lifting assembly includes a support plate 202 and two electric push rods 201. A through slot is formed on the outer side of the support frame 1. The electric push rods 201 are located inside the through slot. The bottom surface of the electric push rods 201 is fixedly connected to the bottom surface of the through slot. The top surface of the output rod of the electric push rod 201 passes through the inner wall of the through slot and extends to the top of the support frame 1. The top surface of the output rod of the electric push rod 201 is fixedly connected to the bottom surface of the support plate 202.

[0030] The protection component includes a protection plate 203 and a buffer plate 204. The buffer plate 204 is located above the protection plate 203. A connecting frame 205, a rotating rod 206 and three adjustment plates 210 are arranged below the protection plate 203. A slide groove is provided on the top surface of the support plate 202. A motor 207, a threaded rod 208 and a slide plate 209 are arranged inside the slide groove. The bottom surfaces of the three adjustment plates 210 are hinged to the top surface of the slide plate 209. The top surfaces of the three adjustment plates 210 are hinged to the bottom surface of the protection plate 203. The bottom surface of the connecting frame 205 is fixedly connected to the top surface of the support plate 202. The front end surface of the rotating rod 206 is fixedly passed through the rear side surface of the protection plate 203 and extends to the front side of the protection plate 203. The front and rear end surfaces of the rotating rod 206 are rotatably connected to the inner side surface of the connecting frame 205 through the bearing seat respectively. The bottom surface of the buffer plate 204 is fixedly connected to the top surface of the protection plate 203. The buffer plate 204 adopts rubber The left end face of the threaded rod 208 is made of rubber, and the thread penetrates the right side of the slide plate 209 and extends to the left side of the slide plate 209. The bottom surface of the slide plate 209 is slidably connected to the bottom surface of the inside of the slide groove, the right side of the motor 207 is fixedly connected to the right side of the inside of the slide groove, and the left end face of the output rod of the motor 207 is fixedly connected to the right end face of the threaded rod 208. The left end face of the threaded rod 208 is rotatably connected to the left side of the inside of the slide groove through the bearing seat. Through the adjustment mechanism 2, the lifting assembly uses the electric push rod 201 to adjust the height of the support plate 203, thereby adjusting the height of the protective plate 203 and the buffer plate 204. The protective assembly uses the protective plate 203 to support the top wall of the underground tunnel of the coal mine. At the same time, the adjusting plate 210 adjusts the angle of the protective plate 203 to adapt to the top wall of the underground tunnel of the coal mine with different inclination angles, thereby improving the applicability and support effect of the stable support for underground excavation of the coal mine.

[0031] Embodiment 2

[0032] On the basis of the first embodiment, the preferred embodiment of the present invention is a stable support for underground excavation in a coal mine. Figure 2 , Figure 3 and Figure 5 As shown: the warning mechanism 3 includes a connecting plate 301, the rear side of the connecting plate 301 is fixedly connected to the front of the support frame 1, a placement groove is opened through the front of the connecting plate 301, a warning sign 302 is arranged inside the placement groove, two warning lights 304 are installed on the front of the warning sign 302, a warning sign is arranged between the two warning lights 304, a mounting plate 303 is fixedly connected to the front of the warning sign 302, the inner wall of the mounting plate 303 is threadedly connected to the inner wall of the connecting plate 301 by bolts, and the mounting plate 303 is convenient for the installation and disassembly of the warning sign 302 through the warning mechanism 3, and the warning light 304 and the warning sign on the warning sign 302 serve as a warning to the underground tunnels of the coal mine to prevent workers from hitting the stable support.

[0033] When in use, move the universal wheel 4 to move the support frame 1 to the working area, turn on the electric push rod 201, the output rod of the electric push rod 201 extends and drives the connected support plate 202 to move upward, thereby causing the protective plate 203 to move upward; turn on the motor 207, the output rod of the motor 207 drives the connected threaded rod 208 to rotate, the threaded rod 208 drives the slide plate 209 to slide to the right inside the slide groove, and the slide plate 209 drives the connected adjustment plate 210 to move to the right, so that the adjustment plate 210 pulls the protective plate 203 to deflect downward, thereby causing the protective plate 203 to support the top wall of the lane at different inclination angles; turn on the warning light 304, and the warning light 304 has a warning effect; when the warning sign 302 needs to be removed for maintenance, turn the bolt to remove the mounting plate 303 from the connecting plate 301, thereby removing the warning sign 302 from the inside of the placement slot.

[0034] Although the embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A stable support for underground coal mine excavation, comprising a support frame (1), characterized in that: An adjustment mechanism (2) is arranged on the upper side of the support frame (1), a warning mechanism (3) is arranged on the side of the support frame (1), and four universal wheels (4) are fixedly connected to the bottom surface of the support frame (1); The adjusting mechanism (2) comprises a lifting component and a protection component; The protection assembly is located above the lifting assembly; The lifting assembly comprises a support plate (202) and two electric push rods (201); a through slot is formed through the outer side surface of the support frame (1); the electric push rods (201) are located inside the through slot; the bottom surface of the electric push rods (201) is fixedly connected to the bottom surface of the through slot; the top end surface of the output rod of the electric push rod (201) passes through the inner wall of the through slot and extends to the top of the support frame (1); the top end surface of the output rod of the electric push rod (201) is fixedly connected to the bottom surface of the support plate (202); The protection component comprises a protection plate (203) and a buffer plate (204), wherein the buffer plate (204) is located above the protection plate (203), and a connecting frame (205), a rotating rod (206) and three adjustment plates (210) are arranged below the protection plate (203); a sliding groove is provided through the top surface of the support plate (202), and a motor (207), a threaded rod (208) and a slide plate (209) are arranged inside the sliding groove; the bottom surfaces of the three adjustment plates (210) are hinged to the top surface of the slide plate (209), and the top surfaces of the three adjustment plates (210) are hinged to the bottom surface of the protection plate (203).

2. A stable support for underground coal mine excavation according to claim 1, characterized in that: The bottom surface of the connecting frame (205) is fixedly connected to the top surface of the support plate (202); the front end surface of the rotating rod (206) is fixedly passed through the rear side surface of the protective plate (203) and extends to the front side of the protective plate (203); the front and rear end surfaces of the rotating rod (206) are rotatably connected to the inner side surface of the connecting frame (205) through the bearing seat respectively.

3. The stable support for underground coal mine excavation according to claim 1 is characterized by: The bottom surface of the buffer plate (204) is fixedly connected to the top surface of the protection plate (203), and the buffer plate (204) is made of rubber material.

4. The stable support for underground coal mine excavation according to claim 1 is characterized in that: The left end surface of the threaded rod (208) is threadedly connected through the right side surface of the slide plate (209) and extends to the left side of the slide plate (209). The bottom surface of the slide plate (209) is slidably connected to the inner bottom surface of the slide groove.

5. The stable support for underground coal mine excavation according to claim 1 is characterized by: The right side surface of the motor (207) is fixedly connected to the right side surface inside the slide slot, the left end surface of the output rod of the motor (207) is fixedly connected to the right end surface of the threaded rod (208), and the left end surface of the threaded rod (208) is rotatably connected to the left side surface inside the slide slot via a bearing seat.

6. The stable support for underground coal mine excavation according to claim 1 is characterized by: The warning mechanism (3) comprises a connecting plate (301), the rear side of the connecting plate (301) is fixedly connected to the front of the support frame (1), the front of the connecting plate (301) is provided with a placement groove, a warning sign (302) is arranged inside the placement groove, two warning lights (304) are installed on the front of the warning sign (302), and a warning mark is arranged between the two warning lights (304).

7. A stable support for underground coal mine excavation according to claim 6, characterized in that: The front of the warning sign (302) is fixedly connected to a mounting plate (303), and the inner wall of the mounting plate (303) is threadedly connected to the inner wall of the connecting plate (301) via bolts.

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