CN221002849U - Medium-thickness coal seam paste filling interlocking hydraulic prop type slurry leakage preventing template device - Google Patents

Abstract

The utility model provides a medium-thickness coal seam paste filling interlocking hydraulic prop type slurry leakage prevention template device which comprises a base box, a supporting device and a slurry leakage prevention template, wherein the supporting device is fixed on the base box, and the slurry leakage prevention template is fixed on the rear side of the supporting device. The grout leakage preventing template can replace a flexible bag or a flexible film, the lateral pressure of the vertical face of the filling body does not damage the grout leakage preventing template, the grout leakage preventing template is repeatedly used, workers are not required to punch holes on a goaf roof to install anchor rods and hang the flexible bag, and the risks of bag breaking, grout breaking and paste burying are avoided.

Description

Medium-thickness coal seam paste filling interlocking hydraulic prop type slurry leakage preventing template device

Technical Field

The utility model relates to the technical field of coal mining supporting equipment, in particular to a paste filling interlocking hydraulic prop type paste leakage-proof template device for a medium-thickness coal seam.

Background

At present, in the underground coal mining production process of coal mines, under village and other buildings, highway railways, river courses, lakes and mountains, paste (gangue, fly ash, cement and other water-added and stirred flowable slurry) is required to be filled after coal mining, and when paste is filled, three sides are required to be provided with supporting baffles to prevent paste bursting, so that paste filling operation can be performed.

The paste filling mode of using flexible bags behind the fully mechanized coal mining support for the medium-thickness coal seam of the coal mine is that the paste filling mode is totally dependent on manual work, and the construction process is as follows: the method comprises the steps of drilling holes on a coal seam roof behind a fully-mechanized coal mining support by workers, then installing anchor ropes to hang metal net supports, making pedestrian passages, then drilling holes on the coal seam roof above a goaf, installing anchor rods for hanging flexible bags, firstly inflating the flexible bags to enable the flexible bags to bulge, then filling paste inwards, wherein the flexible bags filled with paste are used for blocking the paste, and the whole paste is too long in filling time and unsafe.

The paste filling mode of using flexible bags behind the fully mechanized mining support has the following defects in the construction process: the construction process is complicated, the roof of the coal seam is perforated, the anchor net is used for supporting and installing the anchor rod, and the construction time is long; the labor intensity of the operation workers is high; the number of workers is large; the materials such as the anchor cable, the metal net, the anchor rod, the flexible bag and the like are all disposable, so the consumption of the materials is large, the materials are uneconomical, and the production cost is increased; the potential safety hazard is large, and in the processes of drilling holes by using the jumbolter, supporting by installing an anchor net and hanging bags by installing the anchor rods, the roof of the coal bed is easily propped up due to the influence of mining, so that personal injury can be caused to operators; after the flexible bag is filled with paste, the easily broken bag or hanging bag is easy to fall off, so that the paste is likely to be broken, and the paste is likely to be buried by people and the cleaning difficulty is high after the paste is broken. In the whole coal mining and filling one cycle process, the working period is long, the work efficiency is low, and the yield is low.

Disclosure of utility model

The utility model aims to provide an interlocking hydraulic prop type slurry leakage prevention template device for filling a medium-thickness coal seam with a paste, which can solve the defect in the operation process of the paste filling mode of using a flexible bag after fully-mechanized mining of a bracket.

According to one object of the utility model, the utility model provides a medium-thickness coal seam paste filling interlocking hydraulic prop type slurry leakage prevention template device, which comprises a base box, a supporting device and a slurry leakage prevention template, wherein the supporting device is fixed on the base box, and the slurry leakage prevention template is fixed on the rear side of the supporting device.

Further, the support device comprises four double-acting hydraulic struts, two top beams and a shield plate, wherein the four double-acting hydraulic struts are fixed on the base box, the top beams are fixed on the double-acting hydraulic struts, and the shield plate is fixed on the top beams.

Further, two ends of the top beam are movably connected with movable beams, a top hydraulic cylinder with two-way action is arranged in the top beam, and two ends of the top hydraulic cylinder are respectively connected with the movable beams.

Further, the anti-leakage template comprises an outer template and an inner template, wherein the inner template is in sliding connection with the outer template, and the outer template is connected with the inner template through a template hydraulic cylinder.

Further, the left end and the right end of the outer template are provided with V-shaped sliding grooves, and the two ends of the inner template are clamped in the V-shaped sliding grooves.

Further, the leakage-proof formwork further comprises a gap filling device, the gap filling device comprises two L-shaped angle plates, one ends of the two L-shaped angle plates are respectively hinged to two sides of the inner formwork, the back of the two L-shaped angle plates is further provided with a hinge shaft, the two L-shaped angle plates are connected through a gap filling hydraulic cylinder, and two ends of the gap filling hydraulic cylinder are respectively hinged to the hinge shafts on the back of the corresponding L-shaped angle plates.

Further, a flame-retardant elastic polyurethane strip is fixed at the top of the inner template and the bottom of the outer template.

Further, a pressing plate is arranged on one side of the outer die plate, an integrally formed right angle plate is fixed on the edge of the L-shaped angle plate, and the right angle plate and the L-shaped angle plate are mutually perpendicular.

Further, a template bracket is arranged on the base box and is hinged with the base box, the bottom of the template bracket is hinged with the outer template, and the other end of the template bracket is connected with the base box through a bracket hydraulic cylinder.

Further, a push-pull hydraulic cylinder is further arranged between the two ends of the outer die plate and the base box, the base box is provided with two anti-reversing hydraulic cylinders which are horizontally arranged, and the bottom of the base box is provided with a traction hydraulic cylinder.

According to the technical scheme, the grout leakage preventing template can replace a flexible bag or a flexible film, the lateral pressure of the vertical face of the filling body is not damaged to the grout leakage preventing template, the grout leakage preventing template is reused, workers are not required to punch holes on the goaf roof to install anchor rods and hang the flexible bag, and the risks of bag breaking, grout breaking and paste burying are avoided.

Drawings

In order to more clearly illustrate the embodiments of the present utility model or the technical solutions in the prior art, the drawings that are needed in the description of the embodiments or the prior art will be briefly described, and it is obvious that the drawings in the description below are some embodiments of the present utility model, and other drawings can be obtained according to the drawings without inventive effort for a person skilled in the art.

FIG. 1 is a schematic diagram of an embodiment of the present utility model;

FIG. 2 is a schematic view of a supporting device according to an embodiment of the present utility model;

FIG. 3 is a top view of a support device according to an embodiment of the present utility model;

FIG. 4 is a schematic view of a pulp leakage preventing template according to an embodiment of the present utility model;

FIG. 5 is a schematic diagram of a device for repairing defects according to an embodiment of the present utility model;

FIG. 6 is a schematic diagram of the structure of an outer template and an inner template according to an embodiment of the present utility model;

fig. 7 is a schematic structural diagram of the present utility model in a non-working state.

In the figure: 1. a base box; 2. a double acting hydraulic prop; 3. a top beam; 4. a shielding plate; 5. a kalant; 6. a movable beam; 7. a top hydraulic cylinder; 8. an outer template; 9. an inner template; 10. v-shaped sliding grooves; 11. a template hydraulic cylinder; 12. polyurethane strips; 13. an L-shaped angle plate; 14. supplementing the hydraulic cylinder; 15. a pressing plate; 16. a right angle plate; 17. a template bracket; 18. a bracket hydraulic cylinder; 19. a push-pull hydraulic cylinder; 20. an anti-reversing hydraulic cylinder; 21. and (5) a traction hydraulic cylinder.

Detailed Description

The technical solutions of the present utility model will be clearly and completely described in connection with the embodiments, and it is apparent that the described embodiments are some embodiments of the present utility model, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.

In the description of the present utility model, 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", "counterclockwise", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings are merely for convenience in describing the present utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be configured and operated in a specific orientation, and thus should not be construed as limiting the present utility model.

Furthermore, the terms "first," "second," and the like, are used for descriptive purposes only and are not to be construed as indicating or implying a relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defining "a first" or "a second" may explicitly or implicitly include one or more of the described features. In the description of the present utility model, the meaning of "a plurality" is two or more, unless explicitly defined otherwise. Furthermore, the terms "mounted," "connected," "coupled," and "connected" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communication between two elements. The specific meaning of the above terms in the present utility model will be understood in specific cases by those of ordinary skill in the art.

Example 1

As shown in figures 1-7 of the drawings,

The utility model provides a medium-thickness coal seam lotion fills interlocking hydraulic prop formula leak protection thick liquid template device, includes base case 1, strutting arrangement and leak protection thick liquid template, wherein:

The supporting device comprises four double-acting hydraulic support posts 2, two top beams 3 and a shield plate 4, wherein the four double-acting hydraulic support posts 2 take a base box 1 as a fixing part, the upper ends of the double-acting hydraulic support posts 2 are connected with the top beams 3, and the shield plate 4 is arranged on the upper parts of the top beams 3, so that a chain support post supporting system is formed.

Specifically, the upper portion of the base box 1 is provided with four column holes, and the bottoms of the four double-acting hydraulic struts 2 are respectively inserted into the four corresponding column holes of the base box 1. A clamping flange 5 is fixed on the base box 1 corresponding to the position of the column hole, and the double-acting hydraulic prop 2 can be conveniently fixed through the clamping flange 5.

The double-acting hydraulic prop 2 is respectively provided with a liquid inlet hole and a liquid return hole, the liquid inlet hole and the liquid return hole are connected with a first hydraulic valve through a hydraulic pipe, and the lifting of the double-acting hydraulic prop 2 is controlled through the first hydraulic valve.

The two top beams 3 are respectively arranged above the base box 1 in parallel, the tops of the two double-acting hydraulic struts 2 are respectively connected with the corresponding top beams 3, and the two top beams 3 are connected through a cross beam. A shield plate 4 is fixed at the top of the two top beams 3, and the shield plate 4 is welded by a steel plate.

When the liquid is injected into the four double-acting hydraulic supports 2 through the first hydraulic valve, the movable columns of the double-acting hydraulic supports 2 are lifted, and are contacted with the coal seam roof through the top beam 3 and the shield plate 4 to support the coal seam roof, so that workers do not need to drill holes on the roof behind the fully-mechanized coal mining support by using an anchor rod drilling machine, and then the anchor rope is installed to hang a metal net for supporting, so that a pedestrian passage is formed.

The two ends of the top beam 3 are movably connected with movable beams 6, a top hydraulic cylinder 7 with two-way functions is arranged in the top beam 3, movable columns at the two ends of the top hydraulic cylinder 7 are respectively connected with the movable beams 6, a liquid inlet hole and a liquid return hole are arranged on the top hydraulic cylinder 7, the liquid inlet hole and the liquid return hole are connected through a hydraulic pipe, a second hydraulic valve is arranged on the hydraulic pipe, and the expansion and the contraction of the top hydraulic cylinder 7 are controlled through the second hydraulic valve.

When four double-acting hydraulic supports 2 support the coal seam roof, through the second hydraulic valve to the middle feed liquor hole of two top pneumatic cylinders 7, the movable column at the both ends of top pneumatic cylinder 7 outwards stretches out to promote the movable beam 6 at the both ends of back timber 3 outwards to remove and stretch out, make one movable beam 6 prop up the upper end of leak protection thick liquid template, another movable beam 6 prop up the fully mechanized coal mining support. The movable beam 6 of the fully-mechanized coal mining support is supported, and the safety of workers under the interlocking support is ensured. The other movable beam 6 props against the paste leakage preventing template, so that the template can be prevented from being propped down by the pressure of paste, and the whole template mechanism is ensured not to retreat due to the large lateral pressure of the paste.

The anti-leakage template comprises an outer template 8, an inner template 9 and a gap filling device, wherein V-shaped sliding grooves 10 are formed in the left end and the right end of the outer template 8, the two ends of the inner template 9 are clamped in the V-shaped sliding grooves 10, the inner template 9 can move up and down relative to the outer template 8 along the V-shaped sliding grooves 10, the outer template 8 and the inner template 9 are connected through two template hydraulic cylinders 11, the outer template 8 and the inner template 9 can be pushed to realize bidirectional expansion through the two template hydraulic cylinders 11, the outer template 8 and the inner template 9 stretch out and expand to increase the template supporting area when in use, and the outer template 8 and the inner template 9 retract and overlap when not in use, so that the area is reduced, the occupied space is reduced, and the anti-leakage template is convenient to move; the speed and the efficiency of the vertical formwork and the degree of connection with the top and bottom plates of the coal seam are improved; the outer template 8 is contacted with the coal seam bottom plate, and the inner template 9 is contacted with the coal seam top plate.

The template hydraulic cylinder 11 is provided with a liquid inlet hole and two liquid outlet holes, the liquid inlet hole and the liquid outlet holes are respectively connected with a hydraulic pipe, the hydraulic pipe is connected with a third hydraulic valve, and the extension or contraction of the outer template 8 and the inner template 9 is controlled and controlled through the third hydraulic valve, so that the mechanized control of the slurry leakage prevention template is realized.

The slurry leakage preventing template can replace a flexible bag or a flexible film, the vertical side pressure of the filling body does not damage the slurry leakage preventing template, the slurry leakage preventing template is repeatedly used, workers are not required to punch holes on a goaf roof to install anchor rods and hang the flexible bag, the risks of bag breaking, slurry breaking and paste burying are avoided, repeated use is realized, slurry breaking and burying are avoided, safety of workers is ensured, material investment is reduced, and raw coal production cost is reduced.

Because the width of the outer template 8 is larger than that of the inner template 9, after the inner template 9 stretches out upwards, the edges of the two sides of the inner template 9 are not aligned with the edges of the outer template 8 to form gaps, the missing parts are filled to be flush with the edges of the outer template 8 by using a gap filling device, other auxiliary materials are not used, the gap is filled mechanically, convenience and quickness are realized, and the adjacent slurry leakage prevention templates are connected in a seamless mode.

The top of the inner template 9 and the bottom of the outer template 8 are fixed with flame-retardant elastic polyurethane strips 12, and the contact compactness of the slurry-leakage-preventing template and the coal seam roof or floor can be enhanced through the polyurethane strips 12, so that the purpose of no leakage of paste slurry at the coal seam roof and floor is realized. In this embodiment, the polyurethane strip 12 may also be made of flame retardant rubber or other polymer materials with flame retardant function.

Specifically, the deficiency supplementing device comprises two L-shaped angle plates 13, one ends of the two L-shaped angle plates 13 are respectively hinged to two sides of the inner formwork 9, the back parts of the two L-shaped angle plates 13 are also provided with hinge shafts, the two L-shaped angle plates 13 are connected through deficiency supplementing hydraulic cylinders 14, and two ends of the deficiency supplementing hydraulic cylinders 14 are respectively hinged to the hinge shafts at the back parts of the corresponding L-shaped angle plates 13. The two L-shaped angle plates 13 and the inner template 9 can be driven to rotate through the deficiency supplementing hydraulic cylinder 14, so that one end of the L-shaped angle plate 13 is clamped at two ends of the inner template 9, the defect that the width of the inner template 9 is intersected with the width of the outer template 8 is overcome through the L-shaped angle plate 13, and gaps formed by uneven edges of two sides of the inner template 9 and the outer template 8 are avoided. The L-shaped angle plate 13 of the supplementing device can be made of a manganese steel plate, a cast steel cast iron plate, an alloy plate or a high polymer material plate, and the like, the supplementing hydraulic cylinder 14 is also provided with a liquid inlet hole and two liquid outlet holes, the liquid inlet hole and the liquid outlet hole are respectively connected with a hydraulic pipe, the hydraulic pipe is connected with a fourth hydraulic valve, and the fourth hydraulic valve is used for controlling the expansion and the contraction of the supplementing hydraulic cylinder 14, so that the supplementing device is controlled to be retracted or expanded.

In order to realize the mutual cooperation of multiunit leak protection thick liquid template device and use, be equipped with a clamp plate 15 on the left side of leak protection thick liquid template, push down the adjacent leak protection thick liquid template that is located left side through clamp plate 15, realize the seamless connection between the adjacent square leak protection thick liquid template, realized not having the gap between the leak protection thick liquid template, do not need flexible membrane or PC to weave the cloth promptly, do not leak the thick liquid yet.

Specifically, the pressing plate 15 is fixed on the left side of the outer die plate 8, and the pressing plate 15 on the outer die plate 8 can press on the left side of the adjacent outer die plate 8, so that the mutual seamless connection of the outer die plates 8 is realized. In this embodiment, the pressing plate 15 and the outer die plate 8 may be directly welded and fixed, and the pressing plate 15 and the outer die plate 8 may be designed to be rotationally connected and controlled to rotate by a hydraulic cylinder.

In order to realize the mutual seamless connection of the inner templates 9, an integrally formed right angle plate 16 is fixed at the edge of the L-shaped angle plate 13 positioned at the left side, the right angle plate 16 and the L-shaped angle plate 13 are mutually perpendicular, when the L-shaped angle plate 13 is placed in place through the deficiency filling hydraulic cylinder 14, the right angle plate 16 is parallel to the inner templates 9, and when the slurry leakage preventing template device is installed, the right angle plate 16 can be pressed at the left side of the adjacent inner templates 9, so that the mutual seamless connection of the inner templates 9 is realized.

The base case 1 is a case body structure formed by welding steel plates, the base case 1 adopts a base case 1 structure, the contact area between the base case 1 and a coal bed bottom plate is large, the base case 1 is large in bearing capacity, the supporting device and the slurry leakage preventing template are high in stability and cannot sink into the coal bed bottom plate, the friction force between the base case 1 and the coal bed bottom plate is large, and the lateral pressure after the paste is filled can be propped.

The base box 1 is provided with the template bracket 17, the template bracket 17 is hinged with the base box 1, the bottom of the template bracket 17 is hinged with the outer template 8, the other end of the template bracket 17 is connected with the base box 1 through the bracket hydraulic cylinder 18, and the template bracket 17 can enable the support and recovery of the slurry leakage prevention template to be more convenient and flexible.

Push-pull hydraulic cylinders 19 are further arranged between the two ends of the outer template 8 and the base box 1, the base box 1 is further provided with two anti-reversing hydraulic cylinders 20 which are horizontally arranged and are horizontally unidirectional, when the movable columns of the anti-reversing hydraulic cylinders 20 extend outwards after liquid injection, the movable columns prop against the bottom of the fully-mechanized mining support, and the whole template device cannot be retreated backwards and is more stable due to high horizontal plane top force.

The bottom of the base box 1 is provided with a traction hydraulic cylinder 21 for moving the base box 1, when one round of filling (supporting, formwork supporting, filling, solidifying and formwork collecting) is finished, the traction hydraulic cylinder 21 takes a fully-mechanized mining support as an acting point, and the whole template device moves forwards, so that the hydraulic mechanical operation is realized.

The utility model is used when in use:

The first step, injecting liquid into the four double-acting hydraulic struts 2 through hydraulic pipes to lift the double-acting hydraulic struts 2, and firmly connecting the shield plate 4 with the coal seam roof to form supporting force for the coal seam roof;

secondly, injecting liquid into a bracket hydraulic cylinder 18 through a hydraulic pipe, and putting down a template bracket 17;

Thirdly, injecting liquid into the push-pull hydraulic cylinder 19 through a hydraulic pipe, erecting a slurry leakage prevention template, wherein the slurry leakage prevention template is vertical to the roof and the floor of the coal seam;

Fourthly, injecting liquid into a template hydraulic cylinder 11 through a hydraulic pipe to enable an inner template 9 and an outer template 8 to extend upwards and downwards, wherein the inner template 9 and the outer template 8 are respectively connected with a coal seam roof and a coal seam floor;

fifthly, injecting liquid into the deficiency supplementing hydraulic cylinder 14 through a hydraulic pipe, expanding the deficiency supplementing device, and supplementing the deficiency part of the inner template 9;

Step six, injecting liquid into the top hydraulic cylinder 7 through a hydraulic pipe to enable the movable beams 6 of the support of the double-acting hydraulic prop 2 to extend out, wherein two movable beams 6 at one end prop against the leakage-proof formwork, and two movable beams 6 at the other end prop against the upper part of the fully-mechanized mining support;

Seventh, liquid is injected into the anti-reversing hydraulic cylinder 20 through a hydraulic pipe, so that the two horizontal anti-reversing hydraulic cylinders 20 on the base box 1 extend out to prop against the lower part of the fully-mechanized mining support; when the second slurry-leakage-preventing template is supported, the pressing edge of the slurry-leakage-preventing template is pressed on the first slurry-leakage-preventing template, and the pressing edge is overlapped with the slurry-leakage-preventing template to realize seamless connection; and then analogizing is performed until the support of the slurry leakage prevention template is completely finished, and filling is performed;

and eighth step, after the filling body is solidified, the system is reversely operated, and finally, the interlocking hydraulic prop type slurry leakage preventing template device is pulled forwards by a traction hydraulic cylinder 21 connected to the bottom of the fully-mechanized mining support to carry out the next cycle.

The hydraulic single prop is different from instability of the hydraulic single prop, is also different from heaviness of a fully mechanized mining support, has high supporting strength on a coal seam roof, has large supporting area, is operated by a hydraulic valve through a hydraulic pipeline, and is convenient, flexible, firm, stable, safe, reliable, mechanized and saving a large number of personnel.

The utility model fills the blank of the mechanized template for filling the paste in the medium-thickness coal seam, realizes the mechanization of the mechanized template for filling the paste in the medium-thickness coal seam, and lays a foundation for the next step of intelligent operation; the device directly supports the coal seam roof, workers do not need to drill holes with the jumbolter firstly and then install the anchor cable to hang a metal net for supporting on the roof behind the fully-mechanized coal mining support, and a pedestrian passageway is formed. No manual drilling is needed, the risk of roof collapse of the coal seam roof is avoided, and safety is ensured; the anchor cable is not used for hanging a metal net for supporting, so that the material quantity is large, and the production cost of raw coal is reduced; the support time is shortened; reduces the labor intensity of workers.

The utility model realizes the repeated recycling of equipment, replaces flexible bags and flexible films with the interlocking strut type slurry leakage prevention template device, avoids the bag breaking and slurry burying, ensures the safety of workers, reduces the material consumption, saves the material cost and reduces the production cost; the template device is convenient and flexible, firm and stable, safe and reliable.

The utility model realizes no leakage of paste slurry, the left side of the paste slurry leakage prevention template is provided with a pressing plate 15, no gap exists between the templates, namely, no flexible film or PC woven cloth is needed, and no paste slurry is leaked; the upper end and the lower end of the template are embedded with flame-retardant elastic polyurethane strips, so that the contact compactness between the template and the top and bottom plates of the coal bed is enhanced, and paste slurry is not leaked at the top and bottom plates of the coal bed; the quick speed, the paste efficiency and the solidity of the vertical template with the top and bottom plates of the coal seam are realized; the device is contracted and overlapped, the occupied space is reduced, and the device is convenient and flexible to use and move under the conditions of underground coal mine and narrow space of a coal face.

The device provided by the utility model is simple and quick to operate by workers during operation, and can be operated by one person, so that coal mining workers can be liberated from heavy physical labor, workers in a coal mining working face can be reduced, the working cycle time for mining and filling paste can be shortened, the coal yield can be improved, the comprehensive cost can be reduced, and the economic benefit of enterprises can be improved.

Finally, it should be noted that: the above embodiments are only for illustrating the technical solution of the present utility model, and not for limiting the same; although the utility model has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical scheme described in the foregoing embodiments can be modified or some or all of the technical features thereof can be replaced by equivalents; such modifications and substitutions do not depart from the spirit of the utility model.

Claims (10)

1. The utility model provides a medium-thickness coal seam lotion fills interlocking hydraulic prop formula leak protection thick liquid template device which characterized in that, includes base case, strutting arrangement and leak protection thick liquid template, strutting arrangement fixes on the base case, leak protection thick liquid template is fixed strutting arrangement's rear side.

2. The medium thickness coal seam paste filled interlocking hydraulic prop type slurry leakage prevention formwork device according to claim 1, wherein the supporting device comprises four double acting hydraulic props, two top beams and a shield plate, the four double acting hydraulic props are fixed on the base box, the top beams are fixed on the double acting hydraulic props, and the shield plate is fixed on the top beams.

3. The medium-thickness coal seam paste filling interlocking hydraulic prop type slurry leakage prevention template device according to claim 2, wherein movable beams are movably connected to two ends of the top beam, a top hydraulic cylinder with a bidirectional effect is arranged in the top beam, and two ends of the top hydraulic cylinder are respectively connected with the movable beams.

4. The medium-thickness coal seam paste filling interlocking hydraulic prop type slurry leakage prevention template device according to claim 1, wherein the slurry leakage prevention template comprises an outer template and an inner template, the inner template is connected with the outer template in a sliding mode, and the outer template is connected with the inner template through a template hydraulic cylinder.

5. The medium-thickness coal seam paste filling interlocking hydraulic prop type slurry leakage prevention template device according to claim 4, wherein the left end and the right end of the outer template are provided with V-shaped sliding grooves, and the two ends of the inner template are clamped in the V-shaped sliding grooves.

6. The medium-thickness coal seam paste filling interlocking hydraulic prop type slurry leakage prevention template device according to claim 5, wherein the slurry leakage prevention template further comprises a gap filling device, the gap filling device comprises two L-shaped corner plates, one ends of the two L-shaped corner plates are respectively hinged to two sides of the inner template, the back parts of the two L-shaped corner plates are also provided with hinge shafts, the two L-shaped corner plates are connected through gap filling hydraulic cylinders, and two ends of the gap filling hydraulic cylinders are respectively hinged to the hinge shafts on the back parts of the corresponding L-shaped corner plates.

7. The medium-thickness coal seam paste filling interlocking hydraulic prop type slurry leakage prevention formwork device according to claim 6, wherein flame-retardant elastic polyurethane strips are fixed at the top of the inner formwork and the bottom of the outer formwork.

8. The medium-thickness coal seam paste filling interlocking hydraulic prop type slurry leakage prevention template device according to claim 7, wherein a pressing plate is arranged on one side of the outer template, an integrally formed rectangular plate is fixed on the edge of one L-shaped corner plate, and the rectangular plate and the L-shaped corner plate are mutually perpendicular.

9. The medium-thickness coal seam paste filling interlocking hydraulic prop type slurry leakage prevention template device according to claim 8, wherein a template bracket is arranged on the base box and is hinged with the base box, the bottom of the template bracket is hinged with the outer template, and the other end of the template bracket is connected with the base box through a bracket hydraulic cylinder.

10. The medium-thickness coal seam paste filling interlocking hydraulic prop type slurry leakage prevention template device according to claim 9, wherein a push-pull hydraulic cylinder is further arranged between two ends of the outer template and the base box, two horizontally arranged anti-reversing hydraulic cylinders are arranged in the base box, and a traction hydraulic cylinder is arranged at the bottom of the base box.