Self-moving conjoined plugging template device for dense filling coal mining method and control method thereof

Abstract

The invention provides a self-moving one-piece plugging template device for a dense filling coal mining method and a control method thereof.The self-moving one-piece plugging template device comprises a moving comprehensive working platform, one-piece templates and a lifting keel pipe, and the one-piece templates and the moving comprehensive working platform are connected through diagonal bracing hydraulic cylinders and connecting hinges; a formwork push-pull hydraulic cylinder is arranged between the lifting keel pipe and the connected formwork, and a self-sealing formwork is arranged at the top end of the lifting keel pipe and hinged to the top of the lifting keel pipe. A lower hydraulic cylinder is arranged at the bottom of the connected template, and an upper hydraulic cylinder is arranged at the top of the lifting keel pipe; a plurality of combined supporting columns are arranged on the movable comprehensive working platform, a telescopic working platform is arranged on the movable comprehensive working platform in a sliding mode, and a telescopic working platform hydraulic cylinder is arranged between the telescopic working platform and the movable comprehensive working platform. Mechanical plugging of the formwork is achieved, the construction process is simplified, material consumption and labor intensity of workers are reduced, and working efficiency and safety are improved.

Description

Technical Field

[0001] The present invention relates to the technical field of coal mining equipment, and particularly to a self - moving integral plugging formwork device for the dense filling coal mining method and its control method. Background Art

[0002] During the coal mining process, plugging operations often require the use of formwork for sealing. Traditional plugging methods mainly rely on manual wall building, supporting formwork, or using auxiliary materials such as wooden boards and plastic woven fabrics. These traditional methods have many disadvantages, such as low construction efficiency, unstable support, high material consumption, high labor intensity of workers, and certain safety risks.

[0003] Existing formwork support methods usually require a large number of single props, wooden boards, bricks and stones, etc. This not only increases the production cost, but also increases the labor intensity of workers. At the same time, there are also problems such as high construction difficulty and the risk of the formwork being washed away by paste. Therefore, there is an urgent need for a new type of formwork support device that is more efficient, safe, and material - saving. Summary of the Invention

[0004] The purpose of the present invention is to provide a self - moving integral plugging formwork device for the dense filling coal mining method and its control method, which replaces the traditional formwork plugging method through hydraulic control and automated operation, significantly improves the construction efficiency, ensures construction safety, reduces material consumption, and lowers the production cost.

[0005] According to the purpose of the present invention, a self - moving integral plugging formwork device for the dense filling coal mining method is provided, including a mobile comprehensive working platform, an integral formwork, and a lifting keel pipe. The integral formwork is connected to the mobile comprehensive working platform through a diagonal support hydraulic cylinder and a connecting hinge. The lifting keel pipe is inserted into the pipe of the integral formwork and moves up and down along the integral formwork. A formwork push - pull hydraulic cylinder is provided between the lifting keel pipe and the integral formwork. A self - sealing formwork is provided at the top of the lifting keel pipe, and the self - sealing formwork is hinged to the top of the lifting keel pipe. A lower hydraulic cylinder is provided at the bottom of the integral formwork, and an upper hydraulic cylinder is provided at the top of the lifting keel pipe. A number of combined props are provided on the mobile comprehensive working platform, and a telescopic working platform is slidably provided on the mobile comprehensive working platform. A telescopic working platform hydraulic cylinder is provided between the telescopic working platform and the mobile comprehensive working platform.

[0006] Further, the lower hydraulic cylinder and the upper hydraulic cylinder are symmetrically arranged at both ends of the bottom of the integral formwork and the top of the lifting keel pipe respectively.

[0007] Further, fixing pin holes and fixing pins are provided on the mobile comprehensive working platform and the telescopic working platform.

[0008] Furthermore, the mobile integrated working platform includes a crawler type, a mine car chassis type, a wheel type or a flat sliding type structure.

[0009] Furthermore, the connected template is composed of a plurality of parallel welded steel square tubes or round tubes. A horizontal square tube is welded to the bottom of the connected template, and the width of the connected template is the same as the width of the filling roadway.

[0010] Furthermore, T-shaped reinforcing ribs are arranged on the inner side of the self-sealing template, and the width of the self-sealing template is the same as the width of the connected template.

[0011] Furthermore, the number of the template push-pull hydraulic cylinders is at least two, and at least two of the template push-pull hydraulic cylinders are symmetrically distributed at both ends of the connected template.

[0012] Furthermore, the number of the diagonal bracing hydraulic cylinders is at least two, and both ends of the diagonal bracing hydraulic cylinders are respectively hinged to the telescopic working platform and the connected template.

[0013] Furthermore, the combined support includes two hydraulic columns, two guiding steel sleeves and a connecting steel beam. The inner tube of the guiding steel sleeve is connected to the connecting steel beam, and the outer tube of the guiding steel sleeve is welded to the mobile integrated working platform.

[0014] According to another object of the present invention, the present invention provides a control method for the self-mobile connected plugging template device of the above-mentioned dense filling coal mining method, including a plugging stage and a retracting stage, and the steps are as follows:

[0015] S1. Plugging stage:

[0016] S101. Control the telescopic working platform hydraulic cylinder to extend, and push the connected template into the filling roadway opening;

[0017] S102. Control the diagonal bracing hydraulic cylinder to extend, so that the connected template is perpendicular to the coal seam roof and floor;

[0018] S103. Control the template push-pull hydraulic cylinder to extend, lift the lifting keel pipe to the roadway roof, and at the same time the self-sealing template covers the gap;

[0019] S104. Control the lower hydraulic cylinder and the upper hydraulic cylinder to extend and press tightly against the coal wall;

[0020] S105. Sequentially control the hydraulic columns of the combined support to support the roadway roof and floor;

[0021] S2. Retracting stage:

[0022] S201. Operate in reverse, and sequentially retract the upper hydraulic cylinder, the lower hydraulic cylinder, the lifting keel pipe, the diagonal bracing hydraulic cylinder and the telescopic working platform;

[0023] S202, controlling the hydraulic columns of the combined support to retract.

[0024] The technical solution of the present invention realizes the mechanized sealing of the formwork, simplifies the construction process, reduces material consumption and labor intensity of workers, solves the problems existing in the traditional formwork sealing method, such as unstable support, large material consumption, high construction difficulty, and high labor intensity of workers, and at the same time improves work efficiency and safety through hydraulic systems and automatic control. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] In order to more clearly illustrate the specific implementation methods of the present invention or the technical solutions in the prior art, the drawings required for use in the specific implementation methods or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are some implementation methods of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0026] Figure 1 It is a structural schematic diagram of an embodiment of the present invention;

[0027] Figure 2 It is a schematic diagram of the structure when the embodiment of the present invention is used;

[0028] Figure 3 A top view of an embodiment of the present invention;

[0029] Figure 4 It is a structural schematic diagram of a one-piece template and a lifting keel tube according to an embodiment of the present invention;

[0030] Figure 5 For the embodiment of the present invention Figure 3 Cross-sectional view of the middle BB;

[0031] Figure 6 This is a schematic diagram of the structure of a combined support column according to an embodiment of the present invention;

[0032] Figure 7 For the embodiment of the present invention Figure 3 Cross-sectional view of the middle BB;

[0033] In the figure: 1. Mobile integrated working platform; 2. One-piece formwork; 3. Lifting keel pipe; 4. Self-sealing formwork; 5. Formwork push-pull hydraulic cylinder; 6. Telescopic working platform; 7. Telescopic working platform hydraulic cylinder; 8. Diagonal support hydraulic cylinder; 9. Connecting hinge; 10. Lower hydraulic cylinder; 11. Upper hydraulic cylinder; 12. Combined pillar; 1201. Hydraulic column; 1202. Guide steel casing; 1203. Connecting steel beam; 13. Power and operating system; 14. Hydraulic control system; 15. Fixing pin; 16. Fixing pin hole. DETAILED DESCRIPTION

[0034] The technical solution of the present invention will be clearly and completely described below in conjunction with the embodiments. Obviously, the described embodiments are part of the embodiments of the present invention, rather than all of the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present invention without creative work shall fall within the protection scope of the present invention.

[0035] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", etc. indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings. It is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus should not be construed as a limitation of the present invention.

[0036] In addition, the terms "first" and "second" are only used for descriptive purposes and cannot be construed as indicating or implying relative importance or implicitly specifying the quantity of the indicated technical features. Thus, the features defined with "first" and "second" may explicitly or implicitly include one or more of the described features. In the description of the present invention, "a plurality of" means two or more unless otherwise specifically defined. In addition, the terms "installation", "connection", and "connection" should be understood in a broad sense. For example, it may be a fixed connection, a detachable connection, or an integral connection; it may be a mechanical connection or an electrical connection; it may be directly connected or indirectly connected through an intermediate medium, and it may be the communication inside two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0037] Embodiment 1

[0038] As Figures 1-7 shown:

[0039] A self - moving combined plugging formwork device for dense filling coal mining method, comprising a mobile integrated working platform 1, a combined formwork 2, a lifting keel pipe 3, a self - sealing formwork 4, a formwork push - pull hydraulic cylinder 5, a telescopic working platform hydraulic cylinder 7, an inclined support hydraulic cylinder 8, a combined support 12 and a hydraulic control system. The device can realize the plugging and strengthening support of the filling roadway. Among them:

[0040] The mobile integrated working platform 1 is a crawler-type platform, which is used to support the installation of components such as templates, hydraulic cylinders and combined pillars. In addition to the crawler-type structure, the mobile integrated working platform 1 can also adopt a working platform in the form of a mine car chassis, wheeled or flat sliding. In this embodiment, a platform with a crawler structure is selected to support the template, telescopic working platform, hydraulic cylinder, combined pillar, valve group, etc.; the operating system includes a driving power and a control system.

[0041] The one-piece formwork 2 is formed by welding a number of steel square tubes or round tubes side by side. The bottom of the one-piece formwork 2 is welded with a horizontal square tube. Its width is consistent with the width of the excavation chamber, and its height is set according to the thickness of the coal seam.

[0042] The lifting keel tube 3 is connected to the self-sealing template 4. The lifting keel tube 3 is used to support the self-sealing template 4. As the lifting keel tube 3 rises and falls, the self-sealing template 4 automatically blocks the gap between the lifting keel tubes 3 to ensure the template sealing effect.

[0043] The lifting keel tube 3 is welded by steel square tubes or round tubes corresponding to the number of the connected formwork 2. The top of the lifting keel tube 3 is welded with the horizontal square tube. There is a gap between the lifting keel tubes 3, and the gap spacing is twice the wall thickness of the steel tube of the connected formwork 2. The lifting keel tube 3 is inserted into the tube of the connected formwork 2, and the height of the lifting keel tube 3 is set according to the thickness of the coal seam.

[0044] The self-sealing template 4 is a naturally drooping steel plate or alloy material plate with T-shaped reinforcement ribs on the inner side. The width of the self-sealing template 4 is consistent with that of the one-piece template 2, and the height of the one-piece template 2 is the same as that of the lifting keel tube 3. The upper part of the self-sealing template 4 is connected to the horizontal square tube on the upper part of the lifting keel tube 3 by a hinge. The self-sealing template 4 rises and falls with the lifting and lowering of the lifting keel tube 3. The function of the self-sealing template 4 is to block the gap between the lifting keel tubes 3.

[0045] The template push-pull hydraulic cylinder 5 is used to promote the extension and retraction of the lifting keel tube 3 to ensure the precise positioning of the template between the roof and floor of the coal seam. The lower end of the cylinder body of the template push-pull hydraulic cylinder 5 is connected to the horizontal square tube at the bottom of the one-piece template 2, and the upper end of the active column of the template push-pull hydraulic cylinder 5 is connected to the square tube at the upper part of the lifting keel tube 3. When the active column of the template push-pull hydraulic cylinder 5 is extended and retracted, it drives the lifting keel tube 3 to move up and down in the square tube of the one-piece template 2. At the same time, the self-sealing template 4 also rises and falls with the lifting of the lifting keel tube 3. The template push-pull hydraulic cylinder 5 is set according to the width of the one-piece template 2. Generally, two to N cylinders can be set, such as Figure 3 As shown, this embodiment is provided with four template push-pull hydraulic cylinders 5.

[0046] The telescopic working platform 6 is arranged above the mobile integrated working platform 1 and is constrained by the U-shaped groove welded on the mobile integrated working platform 1. The telescopic working platform 6 supports the one-piece formwork 2, the lifting keel tube 3, the diagonal bracing hydraulic cylinder 8 and the connecting hinge 9. Under the push and pull of the telescopic working platform hydraulic cylinder 7, the telescopic working platform 6 can move horizontally.

[0047] The telescopic working platform hydraulic cylinder 7 is fixed to the middle part of the mobile integrated working platform 1, the cylinder end on the mobile integrated working platform 1 is hingedly connected to the mobile integrated working platform 1, the live column end on the mobile integrated working platform 1 is hingedly connected to the middle part of the telescopic working platform 6, and the telescopic working platform 6 is pushed and pulled by the telescopic working platform hydraulic cylinder 7 to move horizontally, ensuring the stability of the template on the work platform.

[0048] The diagonal support hydraulic cylinder 8 is used to support the joint formwork 2 so that the joint formwork 2 is stably connected to the coal seam floor. The diagonal support hydraulic cylinder 8 can be provided in two to N numbers according to the width of the joint formwork 2. Figure 3 As shown, in the present embodiment, the number of the diagonal bracing hydraulic cylinders 8 is two, the lower end of the cylinder body of the diagonal bracing hydraulic cylinder 8 is hingedly connected to the telescopic working platform 6, the upper end of the movable column of the diagonal bracing hydraulic cylinder 8 is hingedly connected to the connected formwork 2, and the telescopic support and retraction of the diagonal bracing hydraulic cylinder 8 supports and retracts the entire formwork.

[0049] The connecting hinge 9 is used to connect the telescopic working platform 6 and the one-piece template 2. The two ends of the connecting hinge 9 are respectively hingedly connected to the telescopic working platform 6 and the one-piece template 2. The connecting hinge 9 can be provided with two to N numbers according to the width of the one-piece template 2. Figure 3 As described, in this embodiment, the number of connecting hinges 9 is two, and the two connecting hinges 9 are used to connect the telescopic working platform 6 and the one-piece formwork 2, and to support and retract the entire formwork.

[0050] A lower hydraulic cylinder 10 is provided at both ends of the bottom of the connected formwork 2. The two lower hydraulic cylinders 10 are respectively installed at both ends of the horizontal square tube at the bottom of the connected formwork 2. The lower hydraulic cylinders 10 are used to support the coal wall of the coal mining tunnel, strengthen the supporting strength of the connected formwork 2, and prevent it from retreating.

[0051] An upper hydraulic cylinder 11 is respectively provided at the two ends of the top of the lifting keel pipe 3. The two upper hydraulic cylinders 11 are respectively installed at the two ends of the horizontal square tube at the top of the lifting keel pipe 3. The upper hydraulic cylinder 11 is used to support the coal wall of the coal mining tunnel, strengthen the supporting strength of the lifting keel pipe 3 and the self-sealing template 4, and prevent backward movement.

[0052] The combined support 12 is composed of hydraulic columns 1201, guide steel sleeves 1202 and connecting steel beams 1203, which can support the entire formwork system. The combined support 12 can be set from two to N according to the required support strength, such as Figure 3As shown in the figure, in this embodiment, five combined supports 12 are provided on the mobile integrated working platform 1, and the five combined supports 12 are used to support the mobile integrated working platform 1.

[0053] As Figure 7 shown, each group of combined supports 12 includes two hydraulic columns 1201, two guiding steel sleeves 1202 and one connecting steel beam 1203. The upper movable columns of the two hydraulic columns 1201 are connected to the connecting steel beam 1203. There are two guiding steel sleeves 1202 (square or circular) between the connecting steel beam and the mobile integrated working platform 1. The upper ends of the inner tubes of the two guiding steel sleeves 1202 are connected to the connecting steel beam 1203, and the lower ends of the outer tubes of the two guiding steel sleeves are welded to the mobile integrated working platform 1. The function of the two guiding steel sleeves is to support the two hydraulic columns and also be used as guiding tubes, so that the lower ends of the two hydraulic columns are separated from the roadway floor, facilitating the overall movement of the mobile integrated working platform 1.

[0054] The function of the power and control system 13 of the mobile integrated working platform is to provide power for the entire mobile integrated working platform and control the movement of the platform. The power can be selected from electricity, diesel engines, winches, etc.

[0055] The hydraulic control system 14 includes a hydraulic valve group. The hydraulic valve group can use single-chip valves, combined valves or solenoid valves. In this embodiment, a total of ten valve groups F1 to F10 are provided. Through the hydraulic valve groups F1 to F10, various hydraulic cylinders are controlled, such as the formwork push-pull hydraulic cylinder 5, the diagonal brace hydraulic cylinder 8 and the combined support 12, etc., to realize operations such as the support and retraction of the integral formwork 2.

[0056] At corresponding positions on the mobile integrated working platform 1, the U-shaped groove and the telescopic working platform 6, fixed pin holes 16 with the same diameter are provided. The fixed pin holes 16 are used to insert fixed pins 15. The function of the fixed pin 15 is to fix the telescopic working platform 6 on the mobile integrated working platform 1. When the telescopic working platform 6 is pushed in place, the fixed pin 15 is inserted into the corresponding fixed pin hole 16 to prevent the entire formwork system from retreating when stressed.

[0057] The self-propelled integral plugging formwork device of the present invention is used in the fully mechanized unit dense filling coal mining method, realizing the mechanized plugging of the formwork, simplifying the construction process, reducing material consumption and the labor intensity of workers. It solves many problems existing in the traditional formwork plugging method, such as unstable support, large material consumption, high construction difficulty, large labor intensity of workers, etc. At the same time, it improves work efficiency and safety through the hydraulic system and automatic control.

[0058] The self - moving and connected plugging formwork device of the present invention is used independently. After the excavation of one filling face is completed, the two mobile integrated working platforms 1 are respectively moved to both ends of the filling chamber through the power and control system 13, and the connected formwork 2 is supported at the filling roadway opening to realize the mechanical plugging of the filling roadway.

[0059] When plugging the filling roadway, the working steps of the present invention are as follows:

[0060] First, operate F1 to inject emulsion into the telescopic working platform hydraulic cylinder 7. The piston rod of the telescopic working platform hydraulic cylinder 7 extends out of the cylinder body to push the telescopic working platform 6 to move, and push the entire connected formwork 2 (including the lifting keel pipe 3, self - sealing formwork 4, etc.) into the filling chamber opening.

[0061] Second, operate F2 to inject emulsion into the inclined strut hydraulic cylinder 8. The piston rod of the inclined strut hydraulic cylinder 8 extends out of the cylinder body to push the connected formwork 2 perpendicular to the coal seam roof and floor.

[0062] Third, operate F3 to inject emulsion into the formwork push - pull hydraulic cylinder 5. The piston rod of the formwork push - pull hydraulic cylinder 5 extends out of the cylinder body to push the lifting keel pipe 3 to extend from the connected formwork 2 until it reaches the coal seam roof. At the same time, the self - sealing formwork 4 also rises as the lifting keel pipe 3 extends, covering the lifting keel pipe 3 to block the gap between the lifting keel pipes 3.

[0063] Fourth, operate F4 to inject emulsion into the two lower hydraulic cylinders 10 of the connected formwork 2. The piston rods of the lower hydraulic cylinders 10 extend out of the cylinder bodies to support on the left and right coal ribs, strengthening the support strength at the lower part of the formwork.

[0064] Fifth, operate F5 to inject emulsion into the two upper hydraulic cylinders 11 at the top of the lifting keel pipe 3. The piston rods of the upper hydraulic cylinders 11 extend out of the cylinder bodies to support on the left and right coal ribs, strengthening the support strength at the upper part of the formwork.

[0065] The above five steps complete the plugging of the filling chamber.

[0066] Sixth, operate F6 to inject emulsion into the hydraulic columns of the combined support 12. The cylinder bodies of the hydraulic columns of the combined support 12 move downward until they reach the roadway floor, and then continue to inject liquid. The piston rods of the hydraulic columns rise under the action of the emulsion pressure until they reach the roadway roof. At the same time, the inner pipes of the two guide steel sleeves also extend upward. Continue to inject liquid until the support strength is reached. Repeat the operations of F7, F8, F9, and F10 to make the other several combined supports 12 all reach the support strength.

[0067] Through the operations of the above steps, the plugging and strengthening support of the backfilled roadway are completed, making the connected formwork 2, lifting keel pipes 3, self-sealing formwork 4, and mobile integrated working platform more stable and firm, ensuring that the entire connected formwork and mobile integrated working platform mechanism will not be washed away due to the large impact force during paste filling. Subsequently, the paste filling work can be carried out.

[0068] The use of the self-propelled mobile connected plugging formwork device of the present invention is simple and easy to operate, the system is simple, and the plugging effect is good, saving time and improving efficiency. Workers can control the actions of various hydraulic cylinders by operating the hydraulic valve group in a safe environment with support, realizing the support of the formwork, reducing physical labor, reducing the number of operators, the construction process is simple, without the need for single props and heavy physical labor for formwork erection, ensuring the safety of workers, the formwork erection and sealing are fast, improving efficiency, increasing the raw coal output, reducing the use of plugging auxiliary materials, and reducing the raw coal cost.

[0069] After the filling is completed using the self-propelled mobile connected plugging formwork device of the present invention, after the paste material begins to set, the formwork and the mobile integrated working platform are retracted, and the steps are as follows:

[0070] First step, operate F5 to inject emulsion into the two upper hydraulic cylinders 11 at the top of the lifting keel pipe 3. The piston rods of the upper hydraulic cylinders 11 retract into the cylinder bodies, and the piston rods leave the coal ribs on the left and right.

[0071] Second step, operate F4 to inject emulsion into the two lower hydraulic cylinders 10 at the bottom of the connected formwork 2. The piston rods of the lower hydraulic cylinders 10 retract into the cylinder bodies, and the piston rods leave the coal ribs on the left and right.

[0072] Third step, operate F3 to inject emulsion into the formwork push-pull hydraulic cylinder 5. The piston rod of the formwork push-pull hydraulic cylinder 5 retracts into the cylinder body, and the retracted piston rod drives the lifting keel pipe 3 to retract towards the connected formwork 2, causing the lifting keel pipe 3 to leave the coal seam roof until it retracts into the connected formwork 2. At the same time, the self-sealing formwork 4 also drops as the lifting keel pipe 3 retracts until it returns to its original position.

[0073] Fourth step, operate F2 to inject emulsion into the diagonal bracing hydraulic cylinder 8. The piston rod of the diagonal bracing hydraulic cylinder 8 retracts into the cylinder body, and the retracted piston rod drives the connected formwork 2 to tilt inward with the connecting hinge 9 as the fulcrum, separating the overall formwork from the initially set paste and leaving the floor until the overall formwork is reset.

[0074] Fifth step, operate F1 to inject emulsion into the telescopic working platform hydraulic cylinder 7. The piston rod of the telescopic working platform hydraulic cylinder 7 retracts into the cylinder body, and the retracted piston rod drives the telescopic working platform 6 to move inward, separating the entire connected formwork 2 (including the lifting keel pipe 3, self-sealing formwork 4, etc.) from the filling chamber opening.

[0075] Step 6: Operate F6, F7, F8, F9, and F10 respectively to retract the pistons of the hydraulic columns of the combined support 12 downward. At the same time, the inner tubes of the two guide steel sleeves also retract downward. When the connecting steel beam falls back to the top of the guide steel sleeve, the cylinder body of the hydraulic column retracts upward until the bottom end of the cylinder body of the hydraulic column leaves the roadway floor; the above is a complete filling cycle.

[0076] When filling by the coal seam unit mining method, the present invention solves the problems that a large amount of manual labor is currently required to set up templates using materials such as single props, wooden boards, and plastic woven fabrics (geotextiles), or to block with masonry walls. It realizes the mechanized blocking of the template, solves the problems of difficult blocking and difficult removal of templates with wooden boards and masonry, solves the problem of too long blocking time with wooden templates and masonry, realizes that there is no risk of the wooden template being washed away by the paste during filling, no risk of difficult operation and the risk of the prop falling and hitting people, and ensures the safety of the operating workers.

[0077] The present invention no longer requires a large number of materials such as single props, wooden boards, and masonry, reduces the production cost of raw coal, shortens the support time, reduces the number of operating personnel, and can reduce the labor intensity of workers; the present invention realizes the repeated cyclic use of equipment. The combined template blocking device replaces materials such as single props, wooden boards, and masonry, prevents slurry from burying people, ensures the safety of workers, reduces material consumption, saves material costs, and reduces production costs.

[0078] The present invention realizes that the template blocking device is simple and easy to operate, the system is simple, and the sealing effect is good. There is no trouble of the paste washing away the template during filling, saving time, improving efficiency, being convenient and flexible, firm and stable, safe and reliable; it realizes the high speed, high efficiency, and the degree of contact with the coal seam roof and floor when setting up the template; the use of the device of the present invention makes the operation of workers simple and fast during operation. One person can operate the equipment, which can liberate coal miners from heavy physical labor, shorten the working cycle time of paste filling in the unit mining chamber, increase coal output, reduce the comprehensive cost, and improve the economic benefits of the enterprise.

[0079] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit them; although the present invention has been described in detail with reference to the foregoing embodiments, those of ordinary skill in the art should understand that they can still modify the technical solutions recorded in the foregoing embodiments, or perform equivalent replacements on some or all of the technical features; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the scope of the technical solutions of the embodiments of the present invention.

Claims

1. Self - moving connected plugging formwork device for dense filling coal mining method, characterized in that, It includes a mobile integrated working platform, a connected template, and a lifting keel pipe. The connected template is connected to the mobile integrated working platform through a diagonal bracing hydraulic cylinder and a connecting hinge. The lifting keel pipe is inserted into the pipe of the connected template and can move up and down along the connected template. A template push-pull hydraulic cylinder is provided between the lifting keel pipe and the connected template. A self-sealing template is provided at the top of the lifting keel pipe, and the self-sealing template is hinged to the top of the lifting keel pipe. A lower hydraulic cylinder is provided at the bottom of the connected template, and an upper hydraulic cylinder is provided at the top of the lifting keel pipe. A number of combined supports are provided on the mobile integrated working platform, and a telescopic working platform is slidably provided on the mobile integrated working platform. A telescopic working platform hydraulic cylinder is provided between the telescopic working platform and the mobile integrated working platform.

2. The self - moving and connected plugging template device for the dense filling coal mining method according to claim 1, wherein The lower hydraulic cylinder and the upper hydraulic cylinder are symmetrically arranged at both ends of the bottom of the connected template and the top of the lifting keel pipe respectively.

3. The self - moving connected plugging formwork device for the dense filling coal mining method according to claim 1, characterized in that, Fixed pin holes and fixed pins are provided on the mobile integrated working platform and the telescopic working platform.

4. The self - moving and connected plugging formwork device for the dense filling coal mining method according to claim 1, characterized in that, The mobile integrated working platform includes a crawler type, a mine car chassis type, a wheel type or a flat sliding type structure.

5. The self - moving connected plugging formwork device for the dense filling coal mining method according to claim 1, characterized in that, The connected template is composed of a number of parallel welded steel square pipes or round pipes. A horizontal square pipe is welded at the bottom of the connected template, and the width of the connected template is the same as the width of the filling roadway.

6. The self - moving and connected plugging formwork device for the dense filling coal mining method according to claim 1, wherein T-shaped reinforcing ribs are provided on the inner side of the self-sealing template, and the width of the self-sealing template is the same as the width of the connected template.

7. The self - moving integral plugging formwork device for the dense filling coal mining method according to claim 1, wherein, The number of the template push-pull hydraulic cylinders is at least two, and at least two of the template push-pull hydraulic cylinders are symmetrically distributed at both ends of the connected template.

8. The self - moving connected plugging template device for the dense filling coal mining method according to claim 1, characterized in that, The number of the diagonal bracing hydraulic cylinders is at least two, and both ends of the diagonal bracing hydraulic cylinders are respectively hinged to the telescopic working platform and the connected template.

9. The self - moving and connected plugging formwork device for the dense filling coal mining method according to claim 1, characterized in that, The combined support includes two hydraulic columns, two guide steel sleeves and a connecting steel beam. The inner pipe of the guide steel sleeve is connected to the connecting steel beam, and the outer pipe of the guide steel sleeve is welded to the mobile integrated working platform.

10. The control method of the self - moving and connected plugging template device for the dense filling coal mining method according to any one of claims 1 - 9, characterized in that, It includes a plugging stage and a retracting stage, and the steps are as follows: S1. Plugging stage: S101. Control the telescopic working platform hydraulic cylinder to extend, and push the connected template into the filling roadway opening. S102. Control the diagonal bracing hydraulic cylinder to extend, so that the connected template is perpendicular to the coal seam roof and floor. S103. Control the template push-pull hydraulic cylinder to extend, lift the lifting keel pipe to the roadway roof, and at the same time the self-sealing template covers the gap. S104. Control the lower hydraulic cylinder and the upper hydraulic cylinder to extend and press tightly against the coal wall. S105. Control the hydraulic columns of the combined support to support the roadway roof and floor in turn. S2. Retracting stage: S201. Operate in reverse, and retract the upper hydraulic cylinder, the lower hydraulic cylinder, the lifting keel pipe, the diagonal bracing hydraulic cylinder and the telescopic working platform in turn. S202. Control the hydraulic columns of the combined support to retract.

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