A thick seam paste filling interlocking hydraulic prop type leakage-proof paste template device

Abstract

The application provides a thick seam paste filling interlocking hydraulic prop type leakage-proof paste template device, which comprises a base box, a supporting device and a leakage-proof paste template, the supporting device is fixed on the base box, and the leakage-proof paste template is fixed on the rear side of the supporting device. The leakage-proof paste template can replace the flexible bag or the flexible film, and the vertical side pressure of the filling body does not destroy the leakage-proof paste template, the leakage-proof paste template can be repeatedly used, workers are no longer needed to drill holes and install anchor rods on the roof of the goaf, and the flexible bag is no longer needed to be hung, so that the risk of bag breaking and paste spilling and the risk of paste burying can be avoided.

Description

Technical Field

[0001] This invention relates to the field of coal mine support equipment technology, and in particular to a hydraulic prop-type anti-leakage grout template device for filling paste in medium-thick coal seams. Background Technology

[0002] Currently, in the process of underground coal mining, there are instances where mining takes place under villages and other buildings, highways and railways, rivers and lakes, and mountains. To prevent ground subsidence and damage to buildings, after coal mining, it is necessary to fill the area with paste (a flowable slurry made of gangue, fly ash, cement, etc. mixed with water). When filling the paste, there must be supporting baffles on three sides to prevent slurry collapse before the paste filling operation can be carried out. Currently, in the paste filling behind the fully mechanized mining support in medium-thick coal seams, only flexible bags are generally used, which are very expensive and there are currently no substitutes.

[0003] The method of using flexible bags for paste filling in medium-thick coal seams behind fully mechanized mining supports relies entirely on manual labor. The construction process is as follows: workers first drill holes in the roof of the coal seam behind the fully mechanized mining supports using a rock bolt drill, then install anchor cables and hang metal mesh for support and to create a pedestrian passage. Then, holes are drilled in the roof of the coal seam above the goaf to install anchor bolts for hanging flexible bags. The flexible bags are first inflated with air, and then filled with paste. The filled flexible bags are used to hold the paste in place. The entire paste filling process takes too long and is unsafe.

[0004] The use of flexible bags for paste filling behind fully mechanized mining supports has several disadvantages during construction: The construction process is cumbersome, involving drilling holes in the coal seam roof, installing anchor mesh, and installing anchor bolts, resulting in long construction times; high labor intensity for workers; a large number of workers required; high material consumption due to the disposable nature of materials such as anchor cables, metal mesh, anchor bolts, and flexible bags, leading to uneconomical practices and increased production costs; significant safety hazards, as the roof is prone to collapse due to mining activity during drilling, installation of anchor mesh, and installation of anchor bolt bags, potentially causing personal injury to workers; and the flexible bags are prone to rupture or detachment after filling with paste, leading to slurry breaches that could bury workers and make cleanup difficult. In the entire coal mining and filling cycle, the operation is lengthy, inefficient, and yields low output. Summary of the Invention

[0005] The purpose of this invention is to provide an interlocking hydraulic prop-type anti-leakage template device for filling paste in medium-thick coal seams, which can solve the shortcomings of the existing paste filling method using flexible bags behind fully mechanized mining supports.

[0006] According to one objective of the present invention, the present invention provides an interlocking hydraulic prop-type anti-leakage template device for filling medium-thick coal seam paste, comprising a base box, a support device and an anti-leakage template, wherein the support device is fixed on the base box and the anti-leakage template is fixed on the rear side of the support device.

[0007] Furthermore, the support device includes four double-acting hydraulic struts, two top beams, and a shield plate. The four double-acting hydraulic struts are fixed to the base box, the top beams are fixed to the double-acting hydraulic struts, and the shield plate is fixed to the top beams.

[0008] Furthermore, movable beams are movably connected to both ends of the top beam, and a bidirectional top hydraulic cylinder is installed inside the top beam, with both ends of the top hydraulic cylinder connected to the movable beam respectively.

[0009] Furthermore, the anti-leakage template includes an outer template and an inner template, the inner template and the outer template are slidably connected, and the outer template and the inner template are connected by a template hydraulic cylinder.

[0010] Furthermore, the outer template has V-shaped grooves at both ends, and the inner template has both ends locked in the V-shaped grooves.

[0011] Furthermore, the anti-leakage template also includes a patching device, which includes two L-shaped corner plates. One end of each L-shaped corner plate is hinged to both sides of the inner template. The back of each L-shaped corner plate is also provided with a hinge shaft. The two L-shaped corner plates are connected by a patching hydraulic cylinder. The two ends of the patching hydraulic cylinder are respectively hinged to the hinge shaft on the back of the corresponding L-shaped corner plate.

[0012] Furthermore, flame-retardant and elastic polyurethane strips are fixed to the top of the inner template and the bottom of the outer template.

[0013] Furthermore, a pressure plate is provided on one side of the outer template, and an integrally formed right-angle plate is fixed to the edge of one of the L-shaped corner plates, with the right-angle plate and the L-shaped corner plate being arranged perpendicular to each other.

[0014] Furthermore, the base box is provided with a template bracket, which is hinged to the base box. The bottom of the template bracket is hinged to the outer template, and the other end of the template bracket is connected to the base box through a bracket hydraulic cylinder.

[0015] Furthermore, push-pull hydraulic cylinders are provided between the two ends of the outer template and the base box, the base box is provided with two horizontally arranged anti-backward hydraulic cylinders, and the bottom of the base box is provided with a traction hydraulic cylinder.

[0016] The leak-proof grout template of this invention can replace flexible bags or flexible membranes, and the lateral pressure of the filling body on the vertical surface does not damage the leak-proof grout template. The leak-proof grout template can be reused, and workers no longer need to drill holes in the roof of the goaf to install anchor bolts or hang flexible bags. There is no risk of bag breakage, grout leakage, or people being buried by the paste. Attached Figure Description

[0017] To more clearly illustrate the specific embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the specific embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of the present invention. For those skilled in the art, other drawings can be obtained from these drawings without creative effort.

[0018] Figure 1 This is a schematic diagram of the structure of an embodiment of the present invention;

[0019] Figure 2 This is a schematic diagram of the support device according to an embodiment of the present invention;

[0020] Figure 3 This is a top view of the support device according to an embodiment of the present invention;

[0021] Figure 4 This is a schematic diagram of the structure of the anti-leakage template according to an embodiment of the present invention;

[0022] Figure 5 This is a schematic diagram of the structure of the defect-filling device according to an embodiment of the present invention;

[0023] Figure 6 This is a schematic diagram of the structure of the outer template and the inner template in an embodiment of the present invention;

[0024] Figure 7 This is a schematic diagram of the structure in the non-working state of an embodiment of the present invention.

[0025] In the diagram: 1. Base box; 2. Double-acting hydraulic support; 3. Top beam; 4. Protective plate; 5. Clamp; 6. Movable beam; 7. Top hydraulic cylinder; 8. Outer formwork; 9. Inner formwork; 10. V-shaped slide; 11. Formwork hydraulic cylinder; 12. Polyurethane strip; 13. L-shaped corner plate; 14. Filling hydraulic cylinder; 15. Pressure plate; 16. Right angle plate; 17. Formwork bracket; 18. Bracket hydraulic cylinder; 19. Push-pull hydraulic cylinder; 20. Anti-backward hydraulic cylinder; 21. Traction hydraulic cylinder. Detailed Implementation

[0026] The technical solution of the present invention will be clearly and completely described below with reference to the embodiments. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0027] In the description of this invention, it should be understood that the terms "center," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," and "counterclockwise," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing this invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limiting this invention.

[0028] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of the stated features. In the description of this invention, "a plurality of" means two or more, unless otherwise explicitly specified. Furthermore, the terms "installed," "connected," and "linked" should be interpreted broadly; for example, they may refer to a fixed connection, a detachable connection, or an integral connection; they may refer to a mechanical connection or an electrical connection; they may refer to a direct connection or an indirect connection through an intermediate medium; and they may refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this invention based on the specific circumstances.

[0029] Example 1

[0030] like Figures 1-7 As shown,

[0031] A hydraulically interlocked prop-type anti-leakage grout template device for filling medium-thick coal seam paste includes a base box 1, a support device, and an anti-leakage grout template, wherein:

[0032] The support device includes four double-acting hydraulic props 2, two top beams 3, and a protective plate 4. The four double-acting hydraulic props 2 are fixed with the base box 1. The upper end of the double-acting hydraulic props 2 is connected to the top beams 3. The top beams 3 are equipped with protective plates 4, thus forming an interlocking prop support system.

[0033] Specifically, the upper part of the base box 1 is provided with four column holes, and the bottoms of the four double-acting hydraulic supports 2 are respectively inserted into the four corresponding column holes of the base box 1. The base box 1 is fixed with a clamp 5 at the position corresponding to the column hole, which can be used to easily fix the double-acting hydraulic supports 2.

[0034] The double-acting hydraulic support 2 is provided with an inlet and a return port, which are connected to the first hydraulic valve through hydraulic pipes. The lifting and lowering of the double-acting hydraulic support 2 is controlled by the first hydraulic valve.

[0035] Two top beams 3 are respectively arranged parallel above the base box 1. The tops of the two double-acting hydraulic supports 2 are respectively connected to the corresponding top beams 3, and the two top beams 3 are connected by a crossbeam. A protective plate 4 is fixed to the top of the two top beams 3. The protective plate 4 is welded from steel plate.

[0036] When fluid is injected into the four double-acting hydraulic supports 2 through the first hydraulic valve, the piston of the double-acting hydraulic support 2 rises and contacts the coal seam roof through the top beam 3 and the shield plate 4 to support the coal seam roof. This eliminates the need for workers to first drill holes with a bolt drill and then install anchor cables and hang metal mesh support on the roof behind the fully mechanized mining support to create a pedestrian passage.

[0037] The top beam 3 is movably connected to the two ends of the movable beam 6. The top beam 3 is equipped with a bidirectional top hydraulic cylinder 7. The pistons at both ends of the top hydraulic cylinder 7 are connected to the movable beam 6 respectively. The top hydraulic cylinder 7 is provided with an inlet hole and a return hole. The inlet hole and the return hole are connected by a hydraulic pipe. A second hydraulic valve is provided on the hydraulic pipe. The extension and retraction of the top hydraulic cylinder 7 are controlled by the second hydraulic valve.

[0038] After the four double-acting hydraulic supports 2 support the coal seam roof, when the second hydraulic valve supplies fluid to the middle inlet of the two top hydraulic cylinders 7, the pistons at both ends of the top hydraulic cylinders 7 extend outward, pushing the movable beams 6 at both ends of the top beam 3 to move outward. This causes one movable beam 6 to press against the upper end of the anti-leakage grout template, and the other movable beam 6 to press against the fully mechanized mining support. The movable beam 6 pressing against the fully mechanized mining support also serves as an advanced support, ensuring the safety of workers operating under the interlocking supports. The other movable beam 6 pressing against the anti-leakage grout template prevents the template from collapsing under the pressure of the grout, ensuring that the entire template mechanism will not retreat due to the large lateral pressure of the grout.

[0039] The anti-leakage formwork includes an outer formwork 8, an inner formwork 9, and a patching device. The outer formwork 8 has V-shaped grooves 10 at both ends, and the inner formwork 9 is fitted into these grooves at both ends. The inner formwork 9 can move up and down relative to the outer formwork 8 along the V-shaped grooves 10. The outer formwork 8 and inner formwork 9 are connected by two hydraulic cylinders 11, which can push the outer formwork 8 and inner formwork 9 to achieve bidirectional extension and retraction. When in use, the outer formwork 8 and inner formwork 9 extend and open to increase the support area; when not in use, they retract and overlap, reducing the area and space occupied, and facilitating movement. This improves the speed and efficiency of formwork erection and the tightness of contact with the coal seam roof and floor. It ensures that the outer formwork 8 contacts the coal seam floor and the inner formwork 9 contacts the coal seam roof.

[0040] The template hydraulic cylinder 11 has an inlet hole and two outlet holes. The inlet hole and outlet holes are connected to hydraulic pipes, which are connected to a third hydraulic valve. The third hydraulic valve controls the extension or contraction of the outer template 8 and the inner template 9, thereby achieving mechanized control of the anti-leakage template.

[0041] The anti-leakage template of this invention can replace flexible bags or flexible membranes, and the lateral pressure of the filling body on the vertical surface does not damage the anti-leakage template. The anti-leakage template can be reused, eliminating the need for workers to drill holes in the roof of the goaf to install anchor bolts and hang flexible bags. There is no risk of bag breakage and slurry collapse or people being buried by the paste. It achieves reuse, eliminates the risk of people being buried by slurry collapse, ensures worker safety, reduces material input, and lowers the cost of raw coal production.

[0042] Since the outer template 8 is wider than the inner template 9, after the inner template 9 extends upward, the two edges of the inner template 9 are not aligned with the two edges of the outer template 8, forming a gap. The missing part is filled with a gap-filling device until it is flush with the edge of the outer template 8. No other auxiliary materials are needed, which realizes mechanized gap filling, which is convenient and quick, and makes the adjacent anti-leakage templates seamlessly connected.

[0043] Flame-retardant and elastic polyurethane strips 12 are fixed to the top of the inner template 9 and the bottom of the outer template 8. The polyurethane strips 12 enhance the contact density between the anti-leakage template and the coal seam roof or floor, achieving the goal of preventing leakage of grout at the coal seam roof and floor. In this embodiment, the polyurethane strips 12 can also be made of flame-retardant rubber or other polymer materials with flame-retardant properties.

[0044] Specifically, the gap-filling device includes two L-shaped corner plates 13. One end of each L-shaped corner plate 13 is hinged to both sides of the inner template 9. The back of each L-shaped corner plate 13 is also provided with a hinge shaft. The two L-shaped corner plates 13 are connected by a gap-filling hydraulic cylinder 14, with both ends of the cylinder hinged to the hinge shafts on the back of the corresponding L-shaped corner plate 13. The gap-filling hydraulic cylinder 14 can rotate the two L-shaped corner plates 13 relative to the inner template 9, thereby locking one end of each L-shaped corner plate 13 at both ends of the inner template 9. This compensates for the insufficient width of the inner template 9 intersecting with the width of the outer template 8, preventing gaps caused by uneven edges between the inner and outer templates 9 and 8. The L-shaped corner plate 13 of the filling device can be made of manganese steel plate, cast steel plate, cast iron plate, alloy plate or polymer material plate, etc. The filling hydraulic cylinder 14 is also provided with an inlet hole and two outlet holes. The inlet hole and outlet holes are respectively connected to hydraulic pipes. The hydraulic pipes are connected to the fourth hydraulic valve. The extension and retraction of the filling hydraulic cylinder 14 are controlled by the fourth hydraulic valve, thereby controlling the retraction or extension of the filling device.

[0045] In order to enable multiple sets of anti-leakage template devices to work together, a pressure plate 15 is provided on the left side of the anti-leakage template. The pressure plate 15 is used to press down the adjacent anti-leakage template on the left side, so as to achieve a seamless connection between the adjacent square anti-leakage templates. This ensures that there are no gaps between the anti-leakage templates, that is, no flexible membrane or PC woven cloth is needed, and no paste slurry is leaked.

[0046] Specifically, the pressure plate 15 is fixed to the left side of the outer template 8. The pressure plate 15 on the outer template 8 can press against the left side of the adjacent outer template 8, thereby achieving a seamless connection between the outer templates 8. In this embodiment, the pressure plate 15 and the outer template 8 can be directly welded together, or the pressure plate 15 and the outer template 8 can be designed to be rotatably connected and their rotation can be controlled by a hydraulic cylinder.

[0047] To achieve seamless connection between the inner formwork 9, an integrally formed right angle plate 16 is fixed to the edge of the L-shaped corner plate 13 on the left side. The right angle plate 16 and the L-shaped corner plate 13 are set perpendicular to each other. After the L-shaped corner plate 13 is placed in place by the filling hydraulic cylinder 14, the right angle plate 16 is parallel to the inner formwork 9. When installing the anti-leakage formwork device, the right angle plate 16 can be used to press on the left side of the adjacent inner formwork 9, thus achieving seamless connection between the inner formwork 9.

[0048] The base box 1 is a box structure welded from steel plates. The base box 1 adopts the base box 1 structure. The base box 1 has a large contact area with the coal seam floor and a large load-bearing capacity, which makes the support device and the anti-leakage template highly stable and will not sink into the coal seam floor. The base box 1 has a large friction with the coal seam floor, which can withstand the lateral pressure after the paste is filled.

[0049] The base box 1 is provided with a template bracket 17, which is hinged to the base box 1. The bottom of the template bracket 17 is hinged to the outer template 8. The other end of the template bracket 17 is connected to the base box 1 through the bracket hydraulic cylinder 18. The template bracket 17 makes the erection and recycling of the anti-leakage template more convenient and flexible.

[0050] Push-pull hydraulic cylinders 19 are also provided between the two ends of the outer template 8 and the base box 1. The base box 1 is also provided with two horizontally arranged anti-backward hydraulic cylinders 20. When the piston of the anti-backward hydraulic cylinder 20 extends outward after the injection of liquid, it pushes against the bottom of the fully mechanized mining support. Due to the large horizontal pushing force, the entire template device will not back down and will be more stable.

[0051] The bottom of the base box 1 is equipped with a traction hydraulic cylinder 21 for moving the base box 1. After a round of filling (coal seam roof support, formwork, filling, solidification, and formwork removal) is completed, the traction hydraulic cylinder 21 uses the fully mechanized mining support as the point of force to move the entire template device forward, realizing hydraulic mechanical operation.

[0052] When using this invention:

[0053] The first step is to inject fluid into the four double-acting hydraulic supports 2 through hydraulic pipes, so that the double-acting hydraulic supports 2 are raised and the shield plate 4 is in contact with the coal seam roof, forming a supporting force on the coal seam roof;

[0054] The second step is to inject fluid into the hydraulic cylinder 18 of the support frame through the hydraulic pipe and lower the template support frame 17.

[0055] The third step is to inject liquid into the push-pull hydraulic cylinder 19 through the hydraulic pipe to make the anti-leakage template stand upright, with the anti-leakage template perpendicular to the top and bottom plates of the coal seam.

[0056] The fourth step is to inject fluid into the hydraulic cylinder 11 of the template through the hydraulic pipe, so that the inner template 9 and the outer template 8 extend upward and downward, and the inner template 9 and the outer template 8 are in contact with the top and bottom plates of the coal seam respectively.

[0057] The fifth step is to inject fluid into the filling hydraulic cylinder 14 through the hydraulic pipe to unfold the filling device and fill in the missing part of the inner template 9.

[0058] The sixth step is to inject fluid into the top hydraulic cylinder 7 through the hydraulic pipe, so that the movable beam 6 of the double-acting hydraulic support 2 extends out. The two movable beams 6 at one end press against the anti-leakage template, and the two movable beams 6 at the other end press against the upper part of the fully mechanized mining support.

[0059] Step 7: Inject fluid into the anti-backward hydraulic cylinder 20 through the hydraulic pipe, causing the two horizontal anti-backward hydraulic cylinders 20 on the base box 1 to extend and press against the lower part of the fully mechanized mining support; when the second anti-leakage template is erected, the pressing edge of the anti-leakage template presses on the first anti-leakage template, and the pressing edge overlaps with the anti-leakage template to achieve a seamless connection; the following steps are repeated until all anti-leakage templates are erected, and then filling is carried out;

[0060] Step 8: After the filling material has solidified, reverse the operation of the above system. Finally, use the traction hydraulic cylinder 21 connected to the bottom of the fully mechanized mining support to pull the interlocked hydraulic support type anti-leakage template device forward to start the next cycle.

[0061] This invention differs from the instability of hydraulic single props and the bulkiness of fully mechanized mining supports. It provides strong support for the coal seam roof and covers a large area. It is operated by hydraulic valves through hydraulic pipelines, making it convenient, flexible, robust, stable, safe, and reliable. It achieves mechanization and saves a significant amount of manpower.

[0062] This invention fills the gap in mechanized templates for filling medium-thick coal seams with paste, realizing the mechanization of paste filling templates for medium-thick coal seams and laying the foundation for future intelligent operations. It allows the device to directly support the coal seam roof, eliminating the need for workers to drill holes behind the fully mechanized mining supports, install anchor cables, and hang metal mesh for support, creating pedestrian walkways. The elimination of manual drilling eliminates the risk of roof collapse, ensuring safety; the elimination of anchor cables and metal mesh support saves significant amounts of materials, reducing raw coal production costs; it shortens support time; and it reduces the number of workers and alleviates their labor intensity.

[0063] This invention enables the repeated use of equipment. The interlocking pillar-type anti-leakage template device replaces flexible bags and flexible films, preventing bag breakage and grout burial, ensuring worker safety, reducing material consumption, saving material costs, and lowering production costs. The template device is convenient, flexible, sturdy, stable, safe, and reliable.

[0064] This invention achieves zero leakage of slurry paste. An additional pressure plate 15 is added to the left side of the leak-proof template, eliminating gaps between templates and preventing slurry leakage even without the use of flexible membranes or PC woven fabric. Flame-retardant and elastic polyurethane strips are inlaid at both ends of the template, enhancing the contact density with the coal seam roof and floor, thus preventing slurry leakage even at the coal seam roof and floor. It achieves rapid template erection, high slurry paste production efficiency, and excellent contact with the coal seam roof and floor. The device also features shrinkable and overlapping design, reducing space requirements and making it convenient and flexible to use and move in confined spaces such as underground coal mines and coal mining faces.

[0065] The use of the device of this invention makes it simple and quick for workers to operate during operations. One person can operate the equipment, which can liberate coal miners from heavy physical labor, reduce the number of workers in the coal mining face, shorten the working cycle time of mining and backfilling paste, increase coal production, reduce overall costs, and improve the economic benefits of enterprises.

[0066] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, and not to limit them; although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some or all of the technical features; and these modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of the present invention.

Claims

1. A thick seam paste filling interlocked hydraulic prop type leakage-proof paste template device, characterized in that, The application relates to a formwork support device, which comprises a base box, a supporting device and a leakage-proof formwork, wherein the supporting device is fixed on the base box, and the leakage-proof formwork is fixed on the rear side of the supporting device; the leakage-proof formwork comprises an outer formwork and an inner formwork, the inner formwork and the outer formwork are slidingly connected, and the outer formwork and the inner formwork are connected through a formwork hydraulic cylinder; V-shaped sliding grooves are arranged at the left and right ends of the outer formwork, and the two ends of the inner formwork are clamped in the V-shaped sliding grooves; the leakage-proof formwork further comprises a gap-filling device, the gap-filling device comprises two L-shaped angle plates, one end of each of the two L-shaped angle plates is hingedly connected to the two sides of the inner formwork, the back of each of the two L-shaped angle plates is further provided with a hinging shaft, the two L-shaped angle plates are connected through a gap-filling hydraulic cylinder, and the two ends of the gap-filling hydraulic cylinder are respectively hingedly connected to the hinging shafts at the backs of the corresponding L-shaped angle plates; polyurethane strips with fire resistance and elasticity are fixed on the top of the inner formwork and the bottom of the outer formwork; one side of the outer formwork is provided with a pressing plate, the edge of one of the L-shaped angle plates is fixed with an integrally-formed right-angle plate, and the right-angle plate and the L-shaped angle plate are arranged perpendicularly to each other; the supporting device comprises four double-acting hydraulic supports, two top beams and a sheltering plate, the four double-acting hydraulic supports are fixed on the base box, the top beams are fixed on the double-acting hydraulic supports, and the sheltering plate is fixed on the top beams.

2. The medium thick seam paste filling interlocked hydraulic prop type leakage-proof paste template device according to claim 1, characterized in that, Two movable beams are movably connected to the two ends of the top beam, and a bidirectional top hydraulic cylinder is arranged in the top beam and connected to the movable beams.

3. The medium thick seam paste filling interlocked hydraulic prop type leakage-proof slurry template device according to claim 1, characterized in that, A formwork bracket is arranged on the base box and hingedly connected to the base box, the bottom of the formwork bracket is hingedly connected to the outer formwork, and the other end of the formwork bracket is connected to the base box through a bracket hydraulic cylinder.

4. The medium thick seam paste filling interlocked hydraulic prop type leakage-proof slurry template device according to claim 3, characterized in that, A push-pull hydraulic cylinder is further arranged between the two ends of the outer formwork and the base box, two horizontally-arranged anti-reverse hydraulic cylinders are arranged in the base box, and a traction hydraulic cylinder is arranged at the bottom of the base box.

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