A convenient temporary support device for coal mining

Abstract

The present invention belongs to the field of temporary support for coal mines, and specifically is an easy-to-use temporary support device for coal mine mining, comprising two lifting platforms, which are symmetrically arranged, the lifting platforms comprising support platforms, which are horizontally arranged, and two parallel bottom plates are arranged below the support platforms. As the mining machine advances, the support platforms of the lifting platforms in the forward direction sink and no longer support the top coal mine, while the rear lifting platform is kept fixedly supported above and below the coal mine, and then the advancing hydraulic rod is extended to push the front lifting platform forward, and then the front lifting platform supports and fixes the coal mine up and down, and then the rear lifting platform is lowered and fixed, and the rear lifting platform is dragged forward by shortening the advancing hydraulic rod, thereby completing the advancement of the overall temporary support, and the entire process can be completed automatically, and it can be moved relatively simply in a coal mine with limited space.

Description

Technical Field

[0001] The invention belongs to the field of temporary support for coal mines, in particular to a temporary support device for coal mining which is easy to use. Background Art

[0002] When working underground in coal mines, the roof rock may become unstable due to mining activities. The support structure can effectively support the roof, prevent rock collapse, and protect the lives of miners. The support is divided into temporary support and permanent support;

[0003] The main purpose of temporary support is to prevent the collapse of the roof and coal wall during tunnel excavation and ensure the safety of workers. Temporary support devices are usually used in excavation working faces to provide immediate support until permanent support is completed.

[0004] The structure of the traditional temporary support device is relatively simple, and it is often composed of hydraulic equipment and a support platform to temporarily support the top of the coal mine that has just been excavated. However, the excavation of the coal mine is always moving forward, so the support device needs to be continuously moved forward. The movement of the traditional support device often requires the assistance of manual labor or other equipment. However, the space in the coal mine is limited, and manual or equipment-assisted operations are difficult to complete, resulting in a more cumbersome movement process.

[0005] To this end, the present invention provides a temporary support device for coal mining that is easy to use. Summary of the invention

[0006] In order to make up for the deficiencies of the prior art, at least one technical problem raised in the background technology is solved.

[0007] The technical solution adopted by the present invention to solve its technical problems is: the present invention discloses a coal mine mining temporary support device which is easy to use, comprising two lifting platforms, the two lifting platforms are symmetrically arranged, the lifting platforms include a support platform, the support platform is horizontally arranged, two parallel bottom plates are arranged below the support platform, a support frame capable of being extended is installed between the bottom plate and the support platform, and two sets of advancing hydraulic rods are installed between two adjacent support frames. The structure of the traditional temporary support device is relatively simple, and it is often composed of hydraulic equipment and a support platform to temporarily support the top of the coal mine just excavated. However, the excavation of the coal mine is always moving forward, so it is necessary to continuously move the support device forward, and the movement of the traditional support device often requires the assistance of manpower or other equipment, and the space in the coal mine is limited, and the operation assisted by manpower or equipment is difficult to complete, resulting in a relatively cumbersome movement process;

[0008] Through the setting of two lifting platforms, the two lifting platforms are placed at the front end of coal mining, and the support platform is lifted up by the extension of the two support frames, so that the mining equipment can pass through the gap between the two support frames and excavate the front end of the coal mine; as the mining machine moves forward, the support platform of the lifting platform in the forward direction sinks and no longer supports the top coal mine, keeping the rear lifting platform still fixed with the upper and lower parts of the coal mine, and then the hydraulic rod is extended to push the front lifting platform forward, and then the front lifting platform supports and fixes the coal mine up and down, and then the rear lifting platform is lowered and fixed, and the rear lifting platform is dragged forward by shortening the hydraulic rod, thereby completing the advancement of the overall temporary support, and the whole process can be completed by itself, and it can be moved relatively easily in coal mines with limited space.

[0009] Preferably, the support frame is composed of folding plate one and folding plate two, the middle parts of folding plate one and folding plate two are rotatably connected by a rotating shaft, the top of the base plate is fixedly connected with a horizontally arranged regulating hydraulic rod, the regulating hydraulic rod is rotatably connected to the bottom of folding plate two, a fixed shaft is rotatably connected between the bottom of folding plate one and the base plate, the top of folding plate one is slidably connected to the bottom of the support platform, and the top of folding plate two is rotatably connected to the bottom of the support platform, and the bottom of folding plate two is rotatably connected to the bottom of the support platform by shortening the regulating hydraulic rod, the bottom of folding plate two will be close to the bottom of folding plate one, and at the same time, the top of folding plate one will be close to the top of folding plate two, and the other ends of folding plate one and folding plate two will be rotated, so that the flat support frame is unfolded upward, and there are four supporting points at the bottom of the support platform, so it can maintain its own levelness, thereby supporting and fixing the coal mine above, thereby realizing the regulating function of rising and sinking the support platform.

[0010] Preferably, the top of the support platform is hollow, and a plurality of rotatable tamping plates are arranged on the top of the support platform. The tamping plates are arc-shaped, and the plurality of tamping plates are staggered and arranged on the top surface of the support platform. The arched portion of the top of the arc-shaped tamping plate fits against the top of the coal mine. In the process of keeping the lifting platform fixed, the plurality of tamping plates are rotated and lifted upward to compact the coal mine on the top. This arrangement allows the coal mine above to remain fixed when the support platform is released and will not loosen easily. At the same time, after the temporary support is transferred, permanent support needs to be built. After the top coal mine is compacted by multiple tamping plates, it is conducive to the subsequent construction of permanent support.

[0011] Preferably, two rotating rods are fixed to the top of the support platform, the tamping plate is rotatably connected to the rotating rods, the bottom of the tamping plate is rotatably connected to two tamping hydraulic rods, and the bottom of the tamping hydraulic rods is rotatably connected to the support platform. Through the extension and shortening of the tamping hydraulic rods, the tamping plate is continuously pushed up to compact the coal mine above, thereby realizing the function of compacting the top surface of the coal mine.

[0012] Preferably, the base plate is composed of a plurality of metal bars, the metal bars are arranged in a long strip shape, the plurality of metal bars are arranged in parallel and equidistantly, and adjacent metal bars are fixedly connected by connecting parts. A reinforcement rod is installed between the two groups of support frames in the support platform. The plurality of metal bars of the base plate are arranged to reduce the friction between the base plate and the ground, and facilitate the movement of the lifting platform. The setting of the reinforcement rod strengthens the strength of the overall supporting structure, and the reinforcement rod will move with the movement of the support platform and will not hinder the mining equipment.

[0013] Preferably, the top of the base plate and the bottom of the support platform are fixedly connected with movable rails, and a sliding groove is provided on the surface of the movable rails. The bottom of the folding plate 2 and the top of the folding plate 1 are slidably engaged with the movable rails through the sliding grooves. The setting of the movable rails and the sliding grooves makes the bottom of the folding plate 2 and the top of the folding plate 1 more stable during the sliding process, reducing the problem of the two deviating to the sides during sliding.

[0014] Preferably, the two ends of the advance hydraulic rod are respectively rotatably connected to the outer sides of the rotating shafts of the two lifting platforms. The advance hydraulic rod is horizontally arranged. The heights of the two lifting platforms will change during the movement and lifting process. The advance hydraulic rod is rotatably connected to the outer sides of the rotating shaft to cooperate with the height changes of the two lifting platforms. The advance hydraulic rod will also tilt appropriately to ensure that the advance hydraulic rod can stably push out or pull the lifting platform.

[0015] Preferably, a plurality of reinforcement chains that can be stretched straight are provided between the two base plates, and the plurality of reinforcement chains are arranged in a staggered manner, and two adjacent reinforcement chains are in an "x" shape in the stretched state. When the factory is temporarily stopped and temporary support is required for long-term placement, the plurality of reinforcement chains can be stretched straight by pulling and arranged in a staggered manner between the two support frames to form a plurality of triangular spaces, thereby ensuring that the stability of the overall lifting platform is enhanced. When the mining equipment needs to pass through, the reinforcement chains are loosened, and under the action of gravity, the reinforcement chains will hang on the ground and will not affect the passage of the mining equipment.

[0016] Preferably, the outer side of the reinforcement chain is sleeved with an adjustable chain that can be rolled up and released, and the adjustable chain and the reinforcement chain are in the same vertical plane. In order to ensure that the loosened reinforcement chain does not coil on the ground, when the reinforcement chain is loosened, the adjustable chain is straightened to pull the entire reinforcement chain into an L shape, and the reinforcement chain at the bottom is straightened and fits the ground. When the reinforcement chain is straightened, the adjustable chain is loosened to ensure that the reinforcement chain can remain straight.

[0017] Preferably, a plurality of electric winding rollers are installed on the inner side of the base plate, and the reinforcement chain and the regulating chain are fixedly connected to the outer side of the electric winding rollers. The release and straightening of the reinforcement chain and the regulating chain are controlled by winding and releasing the electric winding rollers.

[0018] The beneficial effects of the present invention are as follows:

[0019] 1. The invention discloses a temporary support device for coal mining which is easy to use. By setting two lifting platforms, the two lifting platforms are placed at the front end of coal mining. The support platform is lifted up by extending the two support frames, so that the mining equipment passes through the gap between the two support frames and excavates the front end of the coal mine. As the mining machine moves forward, the support platform of the lifting platform in the forward direction sinks and no longer supports the top coal mine, while the rear lifting platform is kept fixedly supported by the upper and lower parts of the coal mine. Then, the advancing hydraulic rod is extended to push the front lifting platform forward, and then the front lifting platform supports and fixes the coal mine up and down, and then the rear lifting platform is lowered and fixed, and the rear lifting platform is dragged forward by shortening the advancing hydraulic rod, thereby completing the advancement of the overall temporary support. Moreover, the whole process can be completed by itself, and it can be moved relatively easily in coal mines with limited space.

[0020] 2. The present invention describes an easy-to-use temporary support device for coal mining. By adjusting the shortening of the hydraulic rod, the bottom of the folding plate two will be close to the bottom of the folding plate one, and the top of the folding plate one will be close to the top of the folding plate two. The other ends of the folding plate one and the folding plate two will rotate, so that the flat support frame will be unfolded upward. There are four supporting points at the bottom of the support platform, so it can maintain its own levelness, thereby supporting and fixing the coal mine above, thereby realizing the control function of the support platform's rise and sinking.

[0021] 3. The present invention discloses a temporary support device for coal mining that is easy to use. A plurality of tamping plates are arranged on the top surface of a support platform. The arched portion of the top of the arc-shaped tamping plates fits against the top of the coal mine. In the process of keeping the lifting platform fixed, the plurality of tamping plates are rotated and lifted up to compact the coal mine on the top. This arrangement allows the coal mine above to remain fixed when the support platform is released and will not loosen easily. At the same time, after the temporary support is transferred, permanent support needs to be built. After the top coal mine is compacted by a plurality of tamping plates, it is conducive to the subsequent construction of permanent support. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] The present invention will be further described below in conjunction with the accompanying drawings.

[0023] Figure 1 is a stereogram of the present invention;

[0024] Figure 2 is a side view of the lifting platform of the present invention;

[0025] Figure 3 is a three-dimensional diagram of the lifting platform of the present invention;

[0026] Figure 4 is a three-dimensional diagram of the support frame and the base plate of the present invention;

[0027] Figure 5is an expanded view of the support frame of the present invention;

[0028] Figure 6 is a three-dimensional diagram of the base plate and the reinforcement chain of the present invention;

[0029] Figure 7 is a three-dimensional diagram of the support platform of the present invention;

[0030] Figure 8 is a three-dimensional diagram of a tamping plate of the present invention;

[0031] Fig. 9 This is a diagram of the straightened state of the reinforced chain of the present invention;

[0032] In the figure: 1. lifting platform; 2. bottom plate; 3. support frame; 4. support platform; 5. advance hydraulic rod; 6. compacting plate; 7. folding plate one; 8. folding plate two; 9. rotating shaft; 10. moving rail; 11. regulating hydraulic rod; 12. reinforcement chain; 13. reinforcement rod; 14. slideway; 15. fixed shaft; 16. regulating chain; 17. rotating rod; 18. compacting hydraulic rod. DETAILED DESCRIPTION

[0033] In order to make the technical means, creative features, objectives and effects achieved by the present invention easy to understand, the present invention is further explained below in conjunction with specific implementation methods.

[0034] like Figures 1 to 9 As shown, a coal mining temporary support device convenient for use according to an embodiment of the present invention comprises two lifting platforms 1, the two lifting platforms 1 are symmetrically arranged, the lifting platforms 1 comprise a support platform 4, the support platform 4 is horizontally arranged, two parallel bottom plates 2 are arranged below the support platform 4, an extendable support frame 3 is installed between the bottom plate 2 and the support platform 4, and two sets of advancing hydraulic rods 5 are installed between two adjacent support frames 3;

[0035] By setting up two lifting platforms 1, the two lifting platforms 1 are placed at the front end of coal mining, and the support platform 4 is lifted up by the extension of the two support frames 3, so that the mining equipment can pass through the gap between the two support frames 3 and excavate the front end of the coal mine; as the mining machine moves forward, the support platform 4 of the lifting platform 1 in the forward direction sinks and no longer supports the top coal mine, keeping the rear lifting platform 1 still fixedly supported by the upper and lower parts of the coal mine, and then the advancing hydraulic rod 5 is extended to push the front lifting platform 1 forward, and then the front lifting platform 1 supports and fixes the coal mine up and down, and then the rear lifting platform 1 is lowered and fixed, and the rear lifting platform 1 is dragged forward by shortening the advancing hydraulic rod 5, thereby completing the advancement of the overall temporary support, and the whole process can be completed by itself, and it can be moved relatively easily in a coal mine with limited space.

[0036] The support frame 3 is composed of a folding plate 1 7 and a folding plate 2 8, the middle parts of the folding plate 1 7 and the folding plate 2 8 are rotatably connected through a rotating shaft 9, a horizontally arranged regulating hydraulic rod 11 is fixedly connected to the top of the bottom plate 2, the regulating hydraulic rod 11 is rotatably connected to the bottom of the folding plate 2 8, a fixed shaft 15 is rotatably connected between the bottom of the folding plate 1 7 and the bottom plate 2, the top of the folding plate 1 7 is slidably connected to the bottom of the support platform 4, and the top of the folding plate 2 8 is rotatably connected to the bottom of the support platform 4;

[0037] During operation, by adjusting the shortening of the hydraulic rod 11, the bottom of the folding plate 2 8 will be close to the bottom of the folding plate 1 7, and the top of the folding plate 1 7 will be close to the top of the folding plate 2 8. The other ends of the folding plates 1 7 and 2 8 will rotate, so that the flat support frame 3 will be unfolded upward. There are four supporting points at the bottom of the support platform 4, so it can maintain its own levelness, thereby supporting and fixing the coal mine above, thereby realizing the control function of the rise and sinking of the support platform 4.

[0038] The top of the support platform 4 is hollow, and a plurality of rotatable tamping plates 6 are arranged on the top of the support platform 4. The tamping plates 6 are arc-shaped, and the plurality of tamping plates 6 are staggered.

[0039] During operation, multiple tamping plates 6 are arranged on the top surface of the support platform 4, and the arched part of the top of the arc-shaped tamping plate 6 fits against the top of the coal mine. While keeping the lifting platform 1 fixed, the multiple tamping plates 6 are rotated and lifted up to compact the coal mine on the top. This arrangement allows the coal mine above to remain fixed when the support platform 4 is released and will not loosen easily. At the same time, after the temporary support is transferred, permanent support needs to be built. After the top coal mine is compacted by multiple tamping plates 6, it is conducive to the subsequent construction of permanent support.

[0040] The top of the support platform 4 is fixedly connected with two rotating rods 17, the tamping plate 6 is rotatably connected to the rotating rods 17, the bottom of the tamping plate 6 is rotatably connected to two tamping hydraulic rods 18, and the bottom of the tamping hydraulic rods 18 is rotatably connected to the support platform 4;

[0041] During operation, the tamping plate 6 is continuously pushed up by extending and shortening the tamping hydraulic rod 18, and the coal mine above is compacted, thereby realizing the function of compacting the top surface of the coal mine.

[0042] The bottom plate 2 is composed of a plurality of metal strips, which are arranged in a long strip shape, and are arranged in parallel and equidistantly. Adjacent metal strips are fixedly connected by connecting pieces. A reinforcing rod 13 is installed between the two groups of support frames 3 in the support platform 4.

[0043] During operation, multiple metal strips of the base plate 2 are arranged to reduce the friction between the base plate 2 and the ground, facilitating the movement of the lifting platform 1. The setting of the reinforcement rod 13 strengthens the strength of the overall supporting structure, and the reinforcement rod 13 will move with the movement of the support platform 4 and will not hinder the mining equipment.

[0044] The top of the bottom plate 2 and the bottom of the support platform 4 are both fixedly connected with a movable rail 10, and a slide groove 14 is provided on the surface of the movable rail 10, and the bottom of the folding plate 2 8 and the top of the folding plate 1 7 are both slidably engaged with the movable rail 10 through the slide groove 14;

[0045] During operation, the arrangement of the movable rail 10 and the slide groove 14 makes the bottom of the second folding plate 8 and the top of the first folding plate 7 more stable during the sliding process, thereby reducing the problem of the two deviating to the sides during sliding.

[0046] The two ends of the advancing hydraulic rod 5 are respectively rotatably connected to the outer sides of the rotating shafts 9 of the two lifting platforms 1, and the advancing hydraulic rod 5 is arranged horizontally;

[0047] During operation, the height of the two lifting platforms 1 will change during the movement and lifting process. The advancing hydraulic rod 5 is rotated and connected to the outside of the rotating shaft 9 to cooperate with the height change of the two lifting platforms 1. The advancing hydraulic rod 5 will also tilt appropriately to ensure that the advancing hydraulic rod 5 can stably push out or pull the lifting platform 1.

[0048] A plurality of stretched reinforcing chains 12 are arranged between the two bottom plates 2. The plurality of reinforcing chains 12 are arranged in a staggered manner, and two adjacent reinforcing chains 12 are in an "x" shape in a stretched state.

[0049] During operation, when the factory is temporarily stopped and temporary support is needed for long-term placement, multiple reinforcement chains 12 can be straightened by pulling and arranged alternately between the two support frames 3 to form multiple triangular spaces to ensure that the stability of the overall lifting platform 1 is enhanced. When the mining equipment needs to pass through, the reinforcement chains 12 are loosened. Under the action of gravity, the reinforcement chains 12 will hang on the ground and will not affect the passage of the mining equipment.

[0050] The outer side of the reinforcement chain 12 is sleeved with a regulating chain 16 that can be rolled up and released, and the regulating chain 16 and the reinforcement chain 12 are in the same vertical plane;

[0051] During operation, in order to ensure that the loosened reinforcement chain 12 does not get tangled on the ground, when the reinforcement chain 12 is loosened, the regulating chain 16 is straightened, and the entire reinforcement chain 12 is pulled into an L shape, and the bottom reinforcement chain 12 is straightened and fits the ground. When the reinforcement chain 12 is straightened, the regulating chain 16 is loosened to ensure that the reinforcement chain 12 can remain straight.

[0052] A plurality of electric winding rollers are installed on the inner side of the bottom plate 2, and the reinforcement chain 12 and the regulating chain 16 are both fixedly connected to the outer side of the electric winding rollers;

[0053] During operation, the release and straightening of the reinforcement chain 12 and the regulating chain 16 are controlled by winding and releasing the electric winding roller.

[0054] During operation, the two lifting platforms 1 are set up to place the two lifting platforms 1 at the front end of the coal mine, and the support platform 4 is lifted up by the extension of the two support frames 3, so that the mining equipment can pass through the gap between the two support frames 3 and excavate the front end of the coal mine; as the mining machine moves forward, the support platform 4 of the lifting platform 1 in the forward direction sinks and no longer supports the top coal mine, so that the rear lifting platform 1 is still fixedly supported by the upper and lower parts of the coal mine, and then the advancing hydraulic rod 5 is extended to push the front lifting platform 1 forward, and then the front lifting platform 1 supports and fixes the coal mine up and down, and then the rear lifting platform 1 is lowered and fixed, and the rear lifting platform 1 is dragged forward by shortening the advancing hydraulic rod 5, thereby completing the advancement of the overall temporary support, and the whole process can be completed by itself, and it can be moved relatively easily in a coal mine with limited space;

[0055] By adjusting the shortening of the hydraulic rod 11, the bottom of the folding plate 2 8 will be close to the bottom of the folding plate 1 7, and the top of the folding plate 1 7 will be close to the top of the folding plate 2 8, and the other ends of the folding plate 1 7 and the folding plate 2 8 will rotate, so that the flat support frame 3 will be unfolded upward. There are four supporting points at the bottom of the support platform 4, so it can maintain its own level, so as to support and fix the coal mine above, thereby realizing the control function of the rise and sinking of the support platform 4;

[0056] A plurality of tamping plates 6 are arranged on the top surface of the support platform 4, and the arched part of the top of the arc-shaped tamping plates 6 is in contact with the top of the coal mine. In the process of keeping the lifting platform 1 fixed, the plurality of tamping plates 6 are rotated and lifted up, so as to compact the coal mine on the top upwards. This arrangement allows the coal mine above to remain fixed when the support platform 4 is unfixed, and will not loosen easily. At the same time, after the temporary support is transferred, a permanent support needs to be built. After the top coal mine is compacted by a plurality of tamping plates 6, it is conducive to the subsequent construction of permanent support.

[0057] By extending and shortening the tamping hydraulic rod 18, the tamping plate 6 is continuously pushed up to compact the coal mine above, thereby achieving the function of tamping the top surface of the coal mine;

[0058] The arrangement of multiple metal strips on the bottom plate 2 reduces the friction between the bottom plate 2 and the ground, facilitating the movement of the lifting platform 1. The setting of the reinforcement rod 13 strengthens the strength of the overall support structure, and the reinforcement rod 13 moves with the movement of the support platform 4, and will not hinder the mining equipment;

[0059] The arrangement of the movable rail 10 and the slide groove 14 makes the bottom of the second folding plate 8 and the top of the first folding plate 7 more stable during the sliding process, reducing the problem of the two deviating to the sides during sliding;

[0060] During the movement and lifting process of the two lifting platforms 1, the height will change. The advancing hydraulic rod 5 is connected to the outside of the rotating shaft 9 and rotates to match the height change of the two lifting platforms 1. The advancing hydraulic rod 5 will also tilt appropriately to ensure that the advancing hydraulic rod 5 can stably push out or pull the lifting platform 1.

[0061] When the factory is temporarily stopped and temporary support is needed for long-term placement, multiple reinforcement chains 12 can be pulled straight and arranged alternately between the two support frames 3 to form multiple triangular spaces to ensure that the stability of the entire lifting platform 1 is enhanced. When the mining equipment needs to pass through, the reinforcement chains 12 are loosened. Under the action of gravity, the reinforcement chains 12 will hang on the ground and will not affect the passage of the mining equipment.

[0062] In order to ensure that the loosened reinforcement chain 12 will not be coiled on the ground, when the reinforcement chain 12 is loosened, the adjustment chain 16 is straightened, and the entire reinforcement chain 12 is pulled into an L shape, and the bottom reinforcement chain 12 is straightened and fits the ground. When the reinforcement chain 12 is straightened, the adjustment chain 16 is loosened to ensure that the reinforcement chain 12 can remain straightened;

[0063] The release and straightening of the reinforcement chain 12 and the regulating chain 16 are controlled by the winding and releasing of the electric winding roller.

[0064] The above shows and describes the basic principles, main features and advantages of the present invention. It should be understood by those skilled in the art that the present invention is not limited to the above embodiments. The above embodiments and descriptions are only for explaining the principles of the present invention. Without departing from the spirit and scope of the present invention, the present invention may have various changes and improvements, which fall within the scope of the present invention. The scope of protection of the present invention is defined by the attached claims and their equivalents.

Claims

1. A convenient temporary support device for coal mining, characterized in that: The invention comprises two lifting platforms (1), the two lifting platforms (1) are symmetrically arranged, the lifting platforms (1) comprise a support platform (4), the support platform (4) is horizontally arranged, two bottom plates (2) arranged in parallel are arranged below the support platform (4), a support frame (3) capable of being extended is installed between the bottom plate (2) and the support platform (4), and two sets of advancing hydraulic rods (5) are installed between two adjacent support frames (3); The support frame (3) is composed of a folding plate 1 (7) and a folding plate 2 (8), the middle parts of the folding plate 1 (7) and the folding plate 2 (8) are rotatably connected via a rotating shaft (9), a horizontally arranged regulating hydraulic rod (11) is fixedly connected to the top of the bottom plate (2), the regulating hydraulic rod (11) is rotatably connected to the bottom of the folding plate 2 (8), a fixed shaft (15) is rotatably connected between the bottom of the folding plate 1 (7) and the bottom plate (2), the top of the folding plate 1 (7) is slidably connected to the bottom of the support platform (4), and the top of the folding plate 2 (8) is rotatably connected to the bottom of the support platform (4); A plurality of reinforcement chains (12) capable of being stretched straight are arranged between the two bottom plates (2), the plurality of reinforcement chains (12) being arranged in a staggered manner, and two adjacent reinforcement chains (12) being in an "x" shape in a stretched straight state; The outer side of the reinforcement chain (12) is sleeved with a regulating chain (16) capable of being rolled up and released, and the regulating chain (16) and the reinforcement chain (12) are located in the same vertical plane; A plurality of electric winding rollers are installed on the inner side of the bottom plate (2), and the reinforcement chain (12) and the regulating chain (16) are both fixedly connected to the outer sides of the electric winding rollers.

2. A convenient-to-use temporary support device for coal mining according to claim 1, characterized in that: The top of the support platform (4) is hollow, and a plurality of rotatable tamping plates (6) are arranged on the top of the support platform (4); the tamping plates (6) are arc-shaped, and the plurality of tamping plates (6) are arranged in a staggered manner.

3. A convenient-to-use temporary support device for coal mining according to claim 2, characterized in that: Two rotating rods (17) are fixedly connected to the top of the support platform (4), the tamping plate (6) is rotatably connected to the rotating rods (17), the bottom of the tamping plate (6) is rotatably connected to two tamping hydraulic rods (18), and the bottom of the tamping hydraulic rods (18) is rotatably connected to the support platform (4).

4. The convenient-to-use temporary support device for coal mining according to claim 3 is characterized in that: The bottom plate (2) is composed of a plurality of metal strips, the metal strips are arranged in a long strip shape, the plurality of metal strips are arranged in parallel and equidistantly, adjacent metal strips are fixedly connected by connecting pieces, and a reinforcing rod (13) is installed between the two groups of support frames (3) in the support platform (4).

5. The convenient-to-use temporary support device for coal mining according to claim 4 is characterized in that: The top of the bottom plate (2) and the bottom of the support platform (4) are both fixedly connected with a movable rail (10), and a sliding groove (14) is provided on the surface of the movable rail (10), and the bottom of the folding plate 2 (8) and the top of the folding plate 1 (7) are both slidably engaged with the movable rail (10) through the sliding groove (14).

6. A convenient-to-use temporary support device for coal mining according to claim 5, characterized in that: Both ends of the advancing hydraulic rod (5) are rotatably connected to the outer sides of the rotating shafts (9) of the two lifting platforms (1), respectively, and the advancing hydraulic rod (5) is arranged horizontally.

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