A hanging device and method for hanging a concrete flexible form bag behind a support

Abstract

This invention discloses a bag-hanging device and method for flexible concrete mold hanging bags after filling a coal mining frame. The device includes a pneumatic winch and a limiting frame. The pneumatic winch is connected to the limiting frame via a lifting control wire rope, and the limiting frame is connected to a hanging frame via the same wire rope. The hanging frame includes a bag-hanging mechanism, which is equipped with a bag-releasing and shifting mechanism and a bag-unfolding and hanging mechanism, which do not contact each other. The bag-hanging method proposed in this invention allows the flexible mold hanging bags to stand upright by being filled with air columns from the flexible mold frame, eliminating the need for hoisting operations. Simultaneously, its supporting devices and deployment method move the bags towards the goaf by their own weight and rolling motion. Combined with the straightening and shaping operations of related devices, construction personnel do not need to work in the goaf, reducing labor consumption and improving work efficiency and safety.

Description

Technical Field

[0001] This invention belongs to the technical field of coal mine protection, and relates to flexible mold hanging bags, specifically to a hanging bag device and method for filling flexible mold hanging bags with concrete after filling coal mining frames. Background Technology

[0002] Backfilling mining can prevent surface subsidence and its secondary disasters without coal pillars, effectively improving operational safety, increasing coal production, and extending the service life of coal mines. It is commonly used for backfilling along goaf roads and in coal mining operations. Common backfilling methods combining baffles and plastic have drawbacks such as material leakage, inconvenient operation, and difficulty in cleaning after solidification. New flexible mold backfilling technology can effectively solve the problems of filler leakage and environmental issues associated with baffle and plastic methods. However, flexible mold backfilling bags need to be transported to the goaf, suspended at a high position, fully unfolded, and fixed with anchor bolts before backfilling can be carried out. Currently, many aspects of the deployment of backfilling bags—including transportation, unfolding, hanging, and fixing—are still done manually, resulting in high labor costs, high labor intensity, and cumbersome processes. Furthermore, construction workers need to work in the goaf for extended periods, posing significant safety risks. Summary of the Invention

[0003] To address the shortcomings of existing technologies, this invention proposes a bag-hanging device and method for filling flexible concrete mold bags after filling coal mining frames, in order to solve the technical problems of filler leakage and high labor costs in existing technologies.

[0004] To solve the above-mentioned technical problems, the present invention adopts the following technical solution:

[0005] A bag-hanging device for filling flexible concrete mold bags for coal mining supports includes a pneumatic winch and a limiting frame. The pneumatic winch and the limiting frame are independently installed on the rear top beam of the filling hydraulic support. The pneumatic winch is connected to the limiting frame via a lifting control wire rope, and the limiting frame is connected to the hanging frame via the lifting control wire rope.

[0006] The hanging rack includes a bag hanging mechanism, which is equipped with a bag placement and shifting mechanism and a bag unfolding and hanging mechanism, which do not contact each other.

[0007] This invention also protects a method for hanging bags in the flexible concrete mold after filling a coal mining frame, the method employing the bag hanging device described above.

[0008] Compared with the prior art, the present invention has the following beneficial technical effects:

[0009] The present invention proposes a bag-hanging device and method for filling flexible concrete mold bags after filling coal mining frames. The flexible mold bags rely on the air columns of the flexible mold frame to fill the flexible mold bags and stand upright without the need for hoisting operations. This eliminates the cumbersome work of anchoring in the goaf by construction personnel. At the same time, its supporting devices and deployment methods rely on their own gravity to roll and move to the goaf. With the help of related devices for straightening and shaping, construction personnel do not need to work in the goaf, thus reducing labor consumption and improving work efficiency and work safety. Attached Figure Description

[0010] Figure 1 This is a schematic diagram of the hanging bracket.

[0011] Figure 2 This is a schematic diagram of the limiting frame.

[0012] Figure 3 This is a schematic diagram of the structure for the connection between the hanger and the limiting frame.

[0013] Figure 4 This is a schematic diagram of the bag placement and shifting mechanism.

[0014] Figure 5 This is a schematic diagram of the display bag hanging mechanism.

[0015] Figure 6 This is a schematic diagram of the structure of a flexible molded hanging bag before it is inflated and unfolded.

[0016] Figure 7 This is a schematic diagram of a flexible molded hanging bag wound into a bundle without being inflated.

[0017] Figure 8 A schematic diagram of the structure of a flexible mold hanging bag after inflation.

[0018] Figure 9 This is a schematic diagram illustrating the operation of the flexible mold hanging bag device in lifting the flexible mold hanging bag.

[0019] Figure 10 This is a schematic diagram illustrating the operation of the flexible mold hanging bag device in moving the flexible mold hanging bag.

[0020] Figure 11 This is a schematic diagram illustrating the operation of the flexible mold hanging bag device in suspending the flexible mold hanging bag.

[0021] The meanings of the labels in the diagram are as follows: 1-Top beam of the hydraulic support after filling, 2-Pneumatic winch, 3-Limit frame, 4-Lifting control wire rope, 5-Hanging bracket, 6-Flexible mold hanging bag, 7-Rotating filling hydraulic support baffle.

[0022] 301-First U-shaped frame, 302-Second U-shaped frame, 303-First U-shaped side wall, 304-Second U-shaped bottom wall, 305-Pulley cavity, 306-Pulley shaft, 307-Pulley, 308-Lifting control wire rope strip hole, 309-Second U-shaped side wall.

[0023] 501 - Bag hanging mechanism, 502 - Bag placement and shifting mechanism, 503 - Bag display and hanging mechanism.

[0024] 601-Flexible mold bag body, 602-Flexible mold skeleton air column, 603-Air valve, 604-Injection port, 605-Middle hook, 606-Top hook, 607-Bottom winding mandrel, 608-Soft rope.

[0025] 50101-Flexible molded bag lifting frame, 50102-Horizontal beam, 50103-Limiting column, 50104-Lifting ring, 50105-Arched elbow, 50106-Upper crossbeam.

[0026] 50201-Bag release lever seat, 50202-Bag release lever, 50203-Bag release handle, 50204-Limit block, 50205-Bag release hook seat, 50206-Bag release hook, 50207-Bag release hook flipping spring, 50208-Bag release lever lifting spring.

[0027] 50301 - First limiting plate, 50302 - Push-pull rod strip hole, 50303 - Push-pull rod, 50304 - Bag unfolding handle, 50305 - Bag unfolding pressure rod long strip hole, 50306 - Bag unfolding pressure rod, 50307 - Bag unfolding pressure rod seat, 50308 - Bag unfolding hook seat, 50309 - Bag unfolding hook, 50310 - Bag unfolding hook flip spring, 50311 - Second limiting plate.

[0028] 5010101-Square frame, 5010102-Square base, 5010103-Square outer base, 5010104-Bag handle moving hole, 5010105-Limit block hole.

[0029] 5020501-Lower end seat of bag hook, 5020502-Upper end seat of bag hook, 5020601-Bag pressure bar hook, 5020602-Flexible mold bag hook.

[0030] 5030801 - Lower end seat of display bag hook, 5030802 - Upper end seat of display bag hook.

[0031] The specific content of the present invention will be further explained in detail below with reference to the embodiments. Detailed Implementation

[0032] It should be noted that, unless otherwise specified, all devices and components in this invention are based on devices and components known in the prior art.

[0033] In this invention, "behind the frame" refers to the rear part of the filling hydraulic support, and the filling hydraulic support adopts the commonly used filling hydraulic support known in the prior art.

[0034] Following the above technical solutions, specific embodiments of the present invention are given below. It should be noted that the present invention is not limited to the following specific embodiments, and all equivalent modifications made based on the technical solutions of this application fall within the protection scope of the present invention.

[0035] Example:

[0036] This embodiment provides a bag-hanging device for hanging bags in flexible concrete molds after filling coal mining frames, including a pneumatic winch 2 and a limiting frame 3, as shown below. Figure 3 As shown, the pneumatic winch 2 is connected to the limit frame 3 via the lifting control wire rope 4, and the limit frame 3 is connected to the hanger 5 via the lifting control wire rope 4.

[0037] like Figure 1 and Figure 3 As shown, the hanging rack 5 includes a bag hanging mechanism 501, on which a bag placement and shifting mechanism 502 and a bag display and hanging mechanism 503 are respectively provided. The bag placement and shifting mechanism 502 and the bag display and hanging mechanism 503 do not contact each other.

[0038] As a preferred embodiment of this invention, such as Figure 2 As shown, the limiting frame 3 includes a first U-shaped frame 301 and a second U-shaped frame 302 connected invertedly in sequence. The two first U-shaped side walls 303 of the first U-shaped frame 301 are connected to the second U-shaped bottom wall 304 of the second U-shaped frame 302, so that the second U-shaped bottom wall 304 of the first U-shaped frame 301 and the second U-shaped bottom wall 304 of the second U-shaped frame 302 form a pulley cavity 305. The length of the first U-shaped frame 301 is less than the length of the second U-shaped frame 302. A pulley shaft 306 is installed in the pulley cavity 305. The two ends of the pulley shaft 306 are respectively fixedly connected to the inner side walls of the two first U-shaped side walls 303. A pulley 307 is fitted in the middle of the pulley shaft 306. A lifting control wire rope strip hole 308 is opened on the second U-shaped bottom wall 304. The lifting control wire rope strip hole 308 is located directly below the pulley 307.

[0039] As a preferred embodiment of this invention, such as Figure 3 As shown, the pneumatic winch 2 is connected to the pulley 307 via the lifting control wire rope 4, and the lifting control wire rope 4 passes through the lifting control wire rope strip hole 308 and is connected to the bracket 5.

[0040] As a preferred embodiment of this invention, such as Figure 1 and Figure 3As shown, the bag hanging mechanism 501 includes a flexible mold bag hanging lifting frame 50101 with open upper and lower ends. The flexible mold bag hanging lifting frame 50101 includes a square frame 5010101. The bottom of the inner side wall of the square frame 5010101 is fixedly connected to the outer side wall of the square base 5010102 with open upper and lower ends. A square outer base 5010103 is integrally provided on the bottom of the outer side wall on the right side of the short side of the square frame 5010101. The lower surfaces of the square outer base 5010103, the square base 5010102 and the square frame 5010101 are flush.

[0041] As a preferred embodiment of this invention, such as Figure 1 As shown, a bag handle moving hole 5010104 is provided on the side wall of the front side of the long side of the square frame 5010101, and a limit block hole 5010105 is provided on the base wall of the left side of the short side of the square base 5010102. The handle moving hole 5010104 and the limit block hole 5010105 are connected to each other.

[0042] As a preferred embodiment of this invention, such as Figure 1 and Figure 3 As shown, the bag hanging mechanism 501 also includes two horizontal beams 50102. The two ends of the horizontal beams 50102 are vertically and fixedly connected to the inner sidewalls of the long side of the square frame 5010101. The horizontal beams 50102 are located above the square base 5010102 and do not contact the square base 5010102.

[0043] As a preferred embodiment of this invention, such as Figure 1 and Figure 3 As shown, the middle parts of the two horizontal beams 50102 are vertically connected to one end of the two limiting columns 50103 respectively. Two lifting rings 50104 are respectively provided at the intersection of the two limiting columns 50103 and the two horizontal beams 50102. The two lifting rings 50104 are arranged horizontally symmetrically. The other end of the limiting column 50103 is provided with an arc-shaped elbow 50105, which is fixedly connected to the middle part of the upper crossbeam 50106.

[0044] As a preferred embodiment of this invention, such as Figure 1 As shown, the lifting control wire rope 4 passes through the lifting control wire rope strip hole 308 and is connected to two lifting rings 50104 respectively to achieve the lifting of the bracket 5.

[0045] As a preferred embodiment, the horizontal outer diameter between the two limiting columns 50103 is equal to the inner diameter of the second U-shaped frame 302.

[0046] As a preferred embodiment of this invention, such as Figure 1 , Figure 3 and Figure 4 As shown, the bag placement and shifting mechanism 502 includes a bag placement pressure bar seat 50201. The lower end of the bag placement pressure bar seat 50201 is fixedly installed on the base wall on the left side of the short side of the square base 5010102. The upper end of the bag placement pressure bar seat 50201 is hinged to one end of the bag placement pressure bar 50202 via a pin. The other end of the bag placement pressure bar 50202 is hinged to one end of the bag placement handle 50203 via a pin. A limit block 50204 is provided in the middle of the bag placement handle 50203. The limit block 50204 can move within the handle moving hole 5010104 and the limit block hole 5010105 by the up and down swing of the other end of the bag placement handle 50203.

[0047] In this embodiment, the second U-shaped sidewall 304 of the second U-shaped frame 302 is used to constrain the horizontal left and right position of the hanger 5; the upper crossbeam 50106 and the second U-shaped bottom wall contact each other to constrain the vertical up and down position of the hanger 5; the arc-shaped bend 50105 facilitates the docking of the limiting frame 3 and the hanger 5. When the lifting control wire rope 4 is tensioned, the limiting column 50103 and the upper crossbeam 50106 can increase the stability of the hanger 5.

[0048] As a preferred embodiment of this invention, such as Figure 4 As shown, the bag placement and shifting mechanism 502 also includes a bag placement hook seat 50205. The bag placement hook seat 50205 includes a lower bag placement hook seat 5020501 and an upper bag placement hook seat 5020502 connected vertically. The width of the lower bag placement hook seat 5020501 is greater than the width of the upper bag placement hook seat 5020502. The lower bag placement hook seat 5020501 is also fixedly installed on the base wall on the left side of the short side of the square base 5010102. The bag placement hook seat 50205 is located between the bag placement pressure bar seat 50201 and the limiting block hole 5010105. The upper bag placement hook seat 5020502 is hinged to the bag placement hook 50206 by a pin. The bag placement hook 50206 contains... The device includes a bag-feeding pressure bar hook 5020601 and a flexible mold bag-hanging hook 5020602 connected in sequence. The upper end seat 5020502 of the bag-feeding hook is hinged to the bag-feeding pressure bar hook 5020601 by a pin, so as to realize the rotation of the flexible mold bag-hanging hook 5020602. The lower end seat 5020501 of the bag-feeding hook is connected to one end of the bag-feeding hook flipping spring 50207. The other end of the bag-feeding hook flipping spring 50207 can press against the bag-feeding pressure bar hook 5020601 to realize the flipping of the bag-feeding pressure bar hook 5020601. The bag-feeding hook flipping spring 50207 is located between the side wall on the left side of the short side of the square frame 5010101 and the upper end seat 5020502 of the bag-feeding hook.

[0049] As a preferred embodiment of this invention, such as Figure 1 , Figure 3 and Figure 4As shown, the bag placement and shifting mechanism 502 also includes a bag placement pressure rod lifting spring 50208. One end of the bag placement pressure rod lifting spring 50208 is connected to the base wall on the left side of the short side of the square base 5010102. The other end of the bag placement pressure rod lifting spring 50208 can press against the bag placement pressure rod 50202 to lift the bag placement pressure rod 50202. The bag placement pressure rod lifting spring 50208 is located between the bag placement hook seat 50205 and the limiting block hole 5010105, so that the flexible mold hanging bag hook 5020602 can realize the hooking and unhooking of the flexible mold hanging bag 6.

[0050] In this embodiment, when the bag-releasing pressure bar 50202 presses down on the bag-releasing hook 50206, the flexible mold hanging bag hook 5020602 hooks the flexible mold hanging bag 6 so that the flexible mold hanging bag 6 will not fall off. When the bag-releasing pressure bar 50202 releases the bag-releasing hook 50206, the bag-releasing hook 50206 rotates around the upper end seat 5020502 of the bag-releasing hook, causing the flexible mold hanging bag 6 to disengage.

[0051] In this embodiment, the bag-releasing pressure bar lifting spring 50208 can lift the bag-releasing pressure bar 50202 in its natural state, causing it to loosen the bag-releasing hook 50206 and release the flexible mold hanging bag 6.

[0052] In this embodiment, the limiting block 50204 is restricted by the limiting block hole 5010105, which can constrain the bag release handle 50203 to compress the bag release lever lifting spring 50208 and the bag release hook flipping spring 50207, so that the bag release lever 50202 presses down on the bag release hook 50206, ensuring that the flexible mold hanging bag 6 does not disengage. When the limiting block 50204 moves upward in the handle moving hole 5010104, the bag release lever lifting spring 50208 pushes up the bag release lever 50202, and the bag release hook flipping spring 50207 flips the bag release hook 50206, releasing the flexible mold hanging bag 6.

[0053] As a preferred embodiment of this invention, such as Figure 1 , Figure 3 and Figure 5 As shown, the bag hanging mechanism 503 includes a first limiting plate 50301, which is integrally formed with the left side wall of the short side of the square frame 5010101. The length of the first limiting plate 50301 is less than the length of the short side wall of the square frame 5010101. The rear end face of the first limiting plate 50301 is flush with the rear end face of the left side wall of the short side of the square frame 5010101. The first limiting plate 50301 and the bag placement and shifting mechanism 502 are located on the same side of the square frame 5010101.

[0054] As a preferred embodiment of this invention, such as Figure 1 , Figure 3 and Figure 5As shown, a push-pull rod slot 50302 is provided on the first limiting plate 50301. One end of the push-pull rod 50303 is installed in the push-pull rod slot 50302. One end of the push-pull rod 50303 passes through the push-pull rod slot 50302. One end of the push-pull rod 50303 is hinged to the bag unfolding handle 50304 by a pin. The push-pull rod 50303 does not contact the bag unfolding pressure rod seat 50201.

[0055] As a preferred embodiment of this invention, such as Figure 1 , Figure 3 and Figure 5 As shown, the bag hanging mechanism 503 also includes a second limiting plate 50311. The lower end of the second limiting plate 50311 is fixedly installed on the base wall of the square outer base 5010103, and the upper end of the second limiting plate 50311 is provided with a long strip hole 50305 for the bag pressing rod.

[0056] As a preferred embodiment of this invention, such as Figure 1 , Figure 3 and Figure 5 As shown, the other end of the push-pull rod 50303 is hinged to one end of the bag-spreading pressure rod 50306 via a pin. The bag-spreading pressure rod 50306 passes through the elongated hole 50305 and can move horizontally left and right within the elongated hole 50305. The other end of the bag-spreading pressure rod 50306 is hinged to the upper end of the bag-spreading pressure rod seat 50307 via a pin. The lower end of the bag-spreading pressure rod seat 50307 is fixedly installed on the base wall of the square outer base 5010103. The bag-spreading pressure rod seat 50307 is located on the side near the handle moving hole 5010104.

[0057] As a preferred embodiment of this invention, such as Figure 1 , Figure 3 and Figure 5 As shown, the display bag hanging mechanism 503 also includes a display bag hook seat 50308. The display bag hook seat 50308 includes a lower display bag hook seat 5030801 and an upper display bag hook seat 5030802 connected vertically. The width of the lower display bag hook seat 5030801 is greater than the width of the upper display bag hook seat 5030802. The lower display bag hook seat 5030801 is fixedly installed on the base wall of the square outer base 5010103. The upper display bag hook seat 5030801... 2. The bag hook 50309 is hinged to the bag hook 50309 by a pin. The lower end seat 5030801 of the bag hook is connected to one end of the bag hook flipping spring 50310. The other end of the bag hook flipping spring 50310 can press against the bag hook 50309 to realize the flipping of the bag hook 50309. The bag hook seat 50308 is located between the second limit plate 50311 and the bag pressure bar seat 50307, ​​so that the bag hook 50309 can realize the hooking and unhooking of the flexible mold hanging bag 6.

[0058] In this embodiment, the bag unfolding handle 50304 hangs down in its natural state, which can restrain the push-pull rod 50303 to prevent it from shifting. When the bag unfolding handle 50304 is pulled up, the bag unfolding handle 50304 and the push-pull rod 50303 are coaxial, and the bag unfolding handle 50304 can make the push-pull rod 50303 move synchronously.

[0059] In this embodiment, the first limiting plate 50301 is used to constrain the push-pull rod 50303, so that the push-pull rod 50303 moves along a preset path direction and distance; the second limiting plate 50311 is used to constrain the bag unfolding pressure rod 50306, so that 50306 moves along a preset path direction and distance.

[0060] In this embodiment, the bag spreading rod 50306 and the push-pull rod 50303 are hinged by a pin. When the push-pull rod 50303 moves, the bag spreading rod 50303 moves horizontally within the elongated hole 50305 of the bag spreading rod.

[0061] In this embodiment, if the bag-spreading pressure bar 50303 does not press the rear of the bag-spreading hook 50309, the bag-spreading hook 50309 will not flip under the action of the bag-spreading hook flipping spring 50310. If the bag-spreading pressure bar 50303 presses the rear of the bag-spreading hook 50309, the bag-spreading hook 50309 will not flip and can bear the weight.

[0062] In this embodiment, when the flexible mold hanging bag 6 is detached, the bag unfolding pressure rod 50303 moves horizontally to the right, and the bag unfolding pressure rod 50303 loosens the rear of the bag unfolding hook 50309. Under the combined action of gravity and the unfolding hook flipping spring 50310, the flexible mold hanging bag 6 reliably disengages from the top, increasing the reliability of the flexible mold hanging bag 6 unfolding.

[0063] As a preferred embodiment, the pneumatic winch 2 and the limiting frame 3 are independently installed on the top beam 1 of the hydraulic filling support, and the top beam 1 of the hydraulic filling support is fixedly connected to the pneumatic winch 2 and the limiting frame 3 by bolts.

[0064] As a preferred embodiment of this invention, such as Figures 6 to 8 As shown, the flexible mold hanging bag 6 includes a flexible mold bag body 601, and a flexible mold skeleton air column 602 is installed inside the flexible mold bag body 601. The flexible mold skeleton air column 602 makes the flexible mold bag body 601 into a cuboid shape. Each surface of the flexible mold bag body 601 except the bottom surface is provided with an air valve 603, and the air valve 603 is connected to the flexible mold skeleton air column 602.

[0065] As a preferred embodiment of this invention, such as Figures 6 to 8As shown, a grouting port 604 is provided at the upper middle position of the front facade of the flexible molded bag body 601. Two middle hooks 605 and two top hooks 606 are also provided on the front facade of the flexible molded bag body 601. The two top hooks 606 are located above the two middle hooks 605. The two middle hooks 605 and the two top hooks 606 are arranged horizontally symmetrically with the grouting port 604 as the axis. The two middle hooks 605 and the two top hooks 606 correspond to each other vertically. The grouting port 604 is located below the two middle hooks 605.

[0066] As a preferred embodiment of this invention, such as Figures 6 to 8 As shown, bottom winding mandrels 607 are provided on the left and right sides of the bottom of the rear facade of the flexible molded bag body 601. The bottom winding mandrels 607 are used to wind the uninflated flexible molded bag body 601 into a cylindrical shape.

[0067] As a preferred embodiment of this invention, such as Figures 6 to 8 As shown, the air valve 603 on the front facade of the flexible molded bag 601 is located on the upper left side of the front facade of the flexible molded bag 601, and the air valve 603 on the rear facade of the flexible molded bag 601 is located on the upper right side of the rear facade of the flexible molded bag 601. The air valves 603 on the front facade and the air valves 603 on the rear facade of the flexible molded bag 601 are arranged diagonally.

[0068] As a preferred embodiment of this invention, such as Figures 6 to 8 As shown, the air valve 603 on the left side of the flexible molded bag body 601 is located in the upper middle part of the left side of the flexible molded bag body 601, and the air valve 603 on the right side of the flexible molded bag body 601 is located in the upper middle part of the right side of the flexible molded bag body 601. The air valves 603 on the left side and the right side of the flexible molded bag body 601 are symmetrically arranged.

[0069] As a preferred embodiment of this invention, such as Figures 6 to 8 As shown, the air valve 603 on the upper surface of the flexible molded bag body 601 is located in the middle left side of the upper surface of the flexible molded bag body 601.

[0070] As a preferred embodiment of this invention, such as Figures 6 to 8 As shown, the front facade of the flexible molded bag body 601 is connected to the middle hook 605 and the top hook 606 respectively by soft ropes 608.

[0071] In this embodiment, the air valve 603 is used to control the start and stop of air inflation, the grouting port 604 is connected to the grouting pipe for injecting concrete paste, and the length of the soft rope 608 is set as needed.

[0072] As a preferred embodiment, a bag hanging method for filling the flexible concrete mold bag after filling the coal mining frame adopts the bag hanging device described above.

[0073] In this embodiment, the method specifically includes the following steps:

[0074] Step 1: Roll the flexible plastic hanging bag into a bundle:

[0075] Step 1.1, as follows Figure 6 As shown, the flexible molded bag body 601 of the flexible molded hanging bag 6 is unfolded into a cuboid shape.

[0076] Step 1.2, as follows Figure 7 As shown, starting from the bottom winding mandrel 607, the flexible molded bag body 601 is wound into a bundle along the rear vertical surface, so that the bottom winding mandrel 607 is located in the center of the flexible molded bag body 601 roll, and the middle hook 605 and the top hook 606 are located on the outer surface of the flexible molded bag body 601 roll.

[0077] Step 2, Lifting the flexible molded hanging bag:

[0078] Step 2.1: As Figure 9 As shown, the hanging frame 5 is lowered using the pneumatic winch 2 and the lifting control wire rope 4;

[0079] Step 2.2: First, hang the top hook 606 from Step 1.2 on the flexible molded bag hook 5020602, and then hang the middle hook 605 from Step 1.2 on the unfolding bag hook 50309 to ensure that the flexible molded bag body 601 is in the correct position after unfolding.

[0080] Step 2.3: As Figure 9 As shown, the pneumatic winch 2 is started to lift the flexible molded bag 601 in step 2.2 until the upper crossbeam 506 contacts the inner wall of the second U-shaped bottom wall 304, and the bag-laying hook flip spring 50207, the bag-laying pressure rod lifting spring 50208, and the bag-unfolding hook flip spring 50310 are all in the pressed state.

[0081] Step 3, flexible mold hanging bag placement and relocation:

[0082] like Figure 10 As shown, rotating the bag release handle 50203 raises the other end of the bag release lever 50202, causing the bag release hook 50206 to flip, and the middle hook ring 605 to fall off the flexible mold bag hook 5020602. Under the action of gravity, the flexible mold bag body 601 in step 2.3 unfolds and moves towards the goaf under the action of rotating the filling hydraulic support baffle 7.

[0083] Step 4: Hanging the flexible molded hanging bag

[0084] Step 4.1: As Figure 8 and Figure 11 As shown, when the air inflator is connected, the air valve 603 on the flexible mold bag 601 in step three is inflated, and the flexible mold skeleton air column 602 begins to expand and unfold, so that the flexible mold bag 601 unfolds into a rectangular flexible mold hanging bag 6.

[0085] Step 4.2: Hold the flexible mold hanging bag 6 from Step 4.1 in the goaf area, and inject concrete grout through the grouting port 604. After the grout is half full, rotate the bag unfolding handle 50304. The bag unfolding handle 50304 pushes the push-pull rod 50303, causing the bag unfolding pressure rod 50306 to move to the right and unfold the bag hook 50309. The top hook ring 606 disengages from the bag unfolding hook 50309 and stands upright. Continue grouting until full.

[0086] Step 4.3: After the flexible mold hanging bag 6 in step 4.2 is detached from the hanging frame 5, the bag placement handle 50203 and the bag unfolding handle 50304 are reset, so that the bag placement hook flipping spring 50207, the bag placement pressure bar lifting spring 50208 and the bag unfolding hook flipping spring 50310 are in their natural state.

[0087] Step 4.4: The pneumatic winch 2 controls the hanging frame 5 to fall. The operation is completed, and the next round of operation begins.

[0088] In step three of this embodiment, the position of the hanging frame 5 remains stable due to the constraint of the limiting frame 3 and the lifting control wire rope 4. In step three, the hanging frame 5 can simultaneously perform the combined operation of unfolding the flexible mold hanging bag 6 and moving it towards the goaf area, completing the operation synchronously. The action time is short, and no special mechanism is required, overcoming the shortcomings of commonly used methods that require telescopic or rotary mechanisms. The device after bag placement and movement is as follows... Figure 10 As shown.

[0089] In step four of this embodiment, the flexible mold hanging bag 6, after being moved, is suspended by the unfolding hook 50309 in an uninflated state and cannot fall. However, after being fully unfolded, it is in a drooping state. At this time, the inflation pipe is connected, and the air valve 603 on the flexible mold bag body 601 begins to inflate. Due to the gas pressure, the flexible mold skeleton air column 602 begins to expand until the flexible mold bag body 601 is fully unfolded into a cuboid shape, the shape of which is as follows. Figure 8 and Figure 11 As shown.

[0090] In step four of this embodiment, the filling hydraulic support baffle 7 is rotated to keep the flexible mold hanging bag 6 in the goaf area. Then, the bag unfolding handle 50304 is manipulated to push the push-pull rod 50303 to release the bag unfolding pressure rod 50306 and unfolding belt hook 50309. The unfolding belt hook 50309 is released from the constraint and rotates. At this time, the flexible mold hanging bag 6 is completely independent of the hanging frame 5 and does not need to be fixed with anchor bolts to maintain its shape.

Claims

1. A bag-hanging device for filling flexible concrete mold bags after filling coal mining frames, comprising a pneumatic winch (2) and a limiting frame (3), characterized in that, The pneumatic winch (2) is connected to the limit frame (3) via the lifting control wire rope (4), and the limit frame (3) is connected to the hanger (5) via the lifting control wire rope (4); The hanging rack (5) includes a bag hanging mechanism (501), and the bag hanging mechanism (501) is respectively provided with a bag placement and shifting mechanism (502) and a bag unfolding and hanging mechanism (503). The bag placement and shifting mechanism (502) and the bag unfolding and hanging mechanism (503) do not contact each other. The limiting frame (3) includes a first U-shaped frame (301) and a second U-shaped frame (302) connected vertically inverted. The two first U-shaped sidewalls (303) of the first U-shaped frame (301) are connected to the second U-shaped bottom wall (304) of the second U-shaped frame (302), so that a pulley cavity (305) is formed between the second U-shaped bottom wall (304) of the first U-shaped frame (301) and the second U-shaped bottom wall (304) of the second U-shaped frame (302). The length of the first U-shaped frame (301) is less than 1 / 3 of the second U-shaped frame (302). The length of the second U-shaped frame (302) is such that a pulley shaft (306) is installed in the pulley cavity (305), and the two ends of the pulley shaft (306) are respectively fixedly connected to the inner sidewalls of the two first U-shaped sidewalls (303). A pulley (307) is fitted in the middle of the pulley shaft (306). A lifting control wire rope strip hole (308) is opened on the bottom wall (304) of the second U-shaped frame. The lifting control wire rope strip hole (308) is located directly below the pulley (307). The pneumatic winch (2) is connected to the pulley (307) via the lifting control wire rope (4), and the lifting control wire rope (4) passes through the lifting control wire rope strip hole (308) and is connected to the bracket (5); The bag hanging mechanism (501) includes a flexible mold bag lifting frame (50101) with open upper and lower ends. The flexible mold bag lifting frame (50101) includes a square frame (5010101). The bottom of the inner side wall of the square frame (5010101) is fixedly connected to the outer side wall of the square base (5010102) with open upper and lower ends. A square outer base (5010103) is integrally provided on the bottom of the outer side wall on the right side of the short side of the square frame (5010101). The lower surfaces of the square outer base (5010103), the square base (5010102) and the square frame (5010101) are flush. The square frame (5010101) has a bag handle moving hole (5010104) on the side wall of the front side of the long side, and a limit block hole (5010105) is provided on the base wall of the left side of the short side of the square base (5010102). The handle moving hole (5010104) and the limit block hole (5010105) are connected to each other. The bag hanging mechanism (501) also includes two horizontal beams (50102). The two ends of the horizontal beams (50102) are vertically and fixedly connected to the inner sidewalls of the long side of the square frame (5010101). The horizontal beams (50102) are located above the square base (5010102) and do not contact the square base (5010102). The middle part of the two horizontal beams (50102) is vertically connected to one end of the two limiting columns (50103). Two lifting rings (50104) are respectively provided at the junction of the two limiting columns (50103) and the two horizontal beams (50102). The two lifting rings (50104) are arranged horizontally symmetrically. An arc-shaped elbow (50105) is provided at the other end of the limiting column (50103). The arc-shaped elbow (50105) is fixedly connected to the middle part of the upper crossbeam (50106). The lifting control wire rope (4) passes through the lifting control wire rope strip hole (308) and is connected to two lifting rings (50104) respectively to realize the lifting of the bracket (5); The horizontal outer diameter between the two limiting columns (50103) is equal to the inner diameter of the second U-shaped frame (302); The bag placement and shifting mechanism (502) includes a bag placement pressure bar seat (50201). The lower end of the bag placement pressure bar seat (50201) is fixedly installed on the base wall on the left side of the short side of the square base (5010102). The upper end of the bag placement pressure bar seat (50201) is hinged to one end of the bag placement pressure bar (50202) through a pin. The other end of the bag placement pressure bar (50202) is hinged to one end of the bag placement handle (50203) through a pin. A limit block (50204) is provided in the middle of the bag placement handle (50203). The limit block (50204) can move in the handle moving hole (5010104) and the limit block hole (5010105) by swinging up and down at the other end of the bag placement handle (50203). The bag placement and shifting mechanism (502) further includes a bag placement hook seat (50205), which includes a lower bag placement hook seat (5020501) and an upper bag placement hook seat (5020502) connected vertically. The width of the lower bag placement hook seat (5020501) is greater than the width of the upper bag placement hook seat (5020502). The lower bag placement hook seat (5020501) is also fixedly installed on the base wall on the left side of the short side of the square base (5010102). The bag placement hook seat (50205) is located between the bag placement pressure bar seat (50201) and the limiting block hole (5010105). The upper bag placement hook seat (5020502) is hinged to the bag placement hook (50206) by a pin. The bag placement hook (50206) The device includes a bag-feeding pressure bar hook (5020601) and a flexible mold bag-hanging hook (5020602) connected in sequence. The upper end seat (5020502) of the bag-feeding hook is hinged to the bag-feeding pressure bar hook (5020601) through a pin to realize the rotation of the flexible mold bag-hanging hook (5020602). The lower end seat (5020501) of the bag-feeding hook is connected to one end of the bag-feeding hook flipping spring (50207). The other end of the bag-feeding hook flipping spring (50207) can press against the bag-feeding pressure bar hook (5020601) to realize the flipping of the bag-feeding pressure bar hook (5020601). The bag-feeding hook flipping spring (50207) is located between the side wall on the left side of the short side of the square frame (5010101) and the upper end seat (5020502) of the bag-feeding hook. The bag placement and shifting mechanism (502) also includes a bag placement pressure rod lifting spring (50208). One end of the bag placement pressure rod lifting spring (50208) is connected to the base wall on the left side of the short side of the square base (5010102). The other end of the bag placement pressure rod lifting spring (50208) can press against the bag placement pressure rod (50202) to lift the bag placement pressure rod (50202). The bag placement pressure rod lifting spring (50208) is located between the bag placement hook seat (50205) and the limiting block hole (5010105), so that the flexible mold hanging bag hook (5020602) can realize the hooking and unhooking of the flexible mold hanging bag (6). The bag hanging mechanism (503) includes a first limiting plate (50301), which is integrally formed with the side wall on the left side of the short side of the square frame (5010101). The length of the first limiting plate (50301) is less than the length of the side wall on the short side of the square frame (5010101). The rear end face of the first limiting plate (50301) is flush with the rear end face of the side wall on the left side of the short side of the square frame (5010101). The first limiting plate (50301) and the bag placement and shifting mechanism (502) are located on the same side of the square frame (5010101). The first limiting plate (50301) has a push-pull rod slot (50302) and one end of the push-pull rod (50303) is installed in the push-pull rod slot (50302). One end of the push-pull rod (50303) passes through the push-pull rod slot (50302) and is hinged to the bag unfolding handle (50304) by a pin. The push-pull rod (50303) does not contact the bag unfolding pressure bar seat (50201). The bag hanging mechanism (503) further includes a second limiting plate (50311). The lower end of the second limiting plate (50311) is fixedly installed on the base wall of the square outer base (5010103). The upper end of the second limiting plate (50311) is provided with a long strip hole (50305) for the bag pressing rod. The other end of the push-pull rod (50303) is hinged to one end of the bag-spreading rod (50306) via a pin. The bag-spreading rod (50306) passes through the elongated hole (50305) of the bag-spreading rod and can move horizontally left and right within the elongated hole (50305). The other end of the bag-spreading rod (50306) is hinged to the upper end of the bag-spreading rod seat (50307) via a pin. The lower end of the bag-spreading rod seat (50307) is fixedly installed on the base wall of the square outer base (5010103). The bag-spreading rod seat (50307) is located on the side near the handle moving hole (5010104). The aforementioned bag hanging mechanism (503) further includes a bag hook seat (50308), which includes a lower bag hook seat (5030801) and an upper bag hook seat (5030802) connected vertically. The width of the lower bag hook seat (5030801) is greater than the width of the upper bag hook seat (5030802). The lower bag hook seat (5030801) is fixedly installed on the base wall of the square outer base (5010103), and the upper bag hook seat (5030802) is fixedly installed on the base wall of the square outer base (5010103). The bag hook (50309) is hinged to the pin shaft. The lower end seat (5030801) of the bag hook is connected to one end of the bag hook flip spring (50310). The other end of the bag hook flip spring (50310) can press against the bag hook (50309) to realize the flip of the bag hook (50309). The bag hook seat (50308) is located between the second limit plate (50311) and the bag pressure bar seat (50307), so that the bag hook (50309) can realize the hooking and unhooking of the flexible mold hanging bag (6).

2. The bag-hanging device for the flexible formwork bag of the coal mining frame as described in claim 1, characterized in that, The pneumatic winch (2) and the limiting frame (3) are respectively installed independently on the rear top beam (1) of the filling hydraulic support. The rear top beam (1) of the hydraulic support is fixedly connected to the pneumatic winch (2) and the limiting frame (3) by bolts.

3. The bag-hanging device for filling the flexible concrete mold bag after filling the coal mining frame as described in claim 1, characterized in that, The flexible mold hanging bag (6) includes a flexible mold bag body (601), and a flexible mold skeleton air column (602) is installed inside the flexible mold bag body (601). The flexible mold skeleton air column (602) makes the flexible mold bag body (601) rectangular. Each surface of the flexible mold bag body (601) except the bottom surface is provided with an air valve (603), and the air valve (603) is connected to the flexible mold skeleton air column (602). The flexible mold bag body (601) has a grouting port (604) located at the upper middle part of the front facade. The flexible mold bag body (601) also has two middle hooks (605) and two top hooks (606) respectively. The two top hooks (606) are located above the two middle hooks (605). The two middle hooks (605) and the two top hooks (606) are arranged horizontally symmetrically with the grouting port (604) as the axis. The two middle hooks (605) and the two top hooks (606) are respectively vertically corresponding. The grouting port (604) is located below the two middle hooks (605). Bottom winding mandrels (607) are provided on the left and right sides of the bottom of the rear facade of the flexible molded bag body (601). The bottom winding mandrels (607) are used to wind the uninflated flexible molded bag body (601) into a cylindrical shape.

4. The bag-hanging device for filling the flexible concrete mold bag after filling the coal mining frame as described in claim 3, characterized in that, The air valve (603) on the front facade of the flexible molded bag body (601) is located on the upper left side of the front facade of the flexible molded bag body (601), and the air valve (603) on the rear facade of the flexible molded bag body (601) is located on the upper right side of the rear facade of the flexible molded bag body (601). The air valve (603) on the front facade of the flexible molded bag body (601) and the air valve (603) on the rear facade of the flexible molded bag body (601) are arranged diagonally. The air valve (603) on the left side of the flexible molded bag body (601) is located in the upper middle part of the left side of the flexible molded bag body (601), and the air valve (603) on the right side of the flexible molded bag body (601) is located in the upper middle part of the right side of the flexible molded bag body (601). The air valve (603) on the left side of the flexible molded bag body (601) and the air valve (603) on the right side of the flexible molded bag body (601) are symmetrically arranged. The air valve (603) on the upper surface of the flexible molded bag body (601) is located in the middle left side of the upper surface of the flexible molded bag body (601); The front facade of the flexible molded bag body (601) is connected to the middle hook (605) and the top hook (606) respectively by soft rope (608).

5. A method for hanging bags for flexible concrete molds after filling coal mining frames, wherein the method employs the bag hanging device for hanging bags for flexible concrete molds after filling coal mining frames as described in any one of claims 1 to 4.

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