Underground coal mining protection support convenient to adjust

Abstract

An underground coal mining protection support convenient to adjust comprises a top plate, a bottom plate, positioning supporting rods, a worm gear, a driving connecting rod, mounting supporting sleeves, a shaft rod and a sliding rod, the positioning supporting sleeves are arranged on the two sides of the top plate, the sliding rod is arranged in the middle of the top plate, a plurality of inserting rods are arranged on the lower portion of the bottom plate, an inner fixing vertical plate is arranged on the upper portion of the bottom plate, and outer fixing vertical plates are arranged on the two sides of the bottom plate. The outer fixing vertical plate is connected with the exterior of the positioning supporting sleeve, the interior of the positioning supporting sleeve is connected with the positioning supporting rod through threads, the positioning supporting rod is sequentially connected with the outer fixing vertical plate and the worm wheel, the worm wheel is provided with a position control protruding block, and the positioning supporting rod is provided with a position control groove. The position control protruding block is matched with the position control groove and connected with the position control groove, a fastening protruding rod is arranged at the lower end of the positioning supporting rod, the outer fixing vertical plate is provided with a protruding rod groove, the fastening protruding rod is matched with the protruding rod groove, and the fastening protruding rod is connected with the protruding rod groove.

Description

Technical Field

[0001] The utility model relates to the field of underground protection, in particular to an underground coal mining protection support which is easy to adjust. Background Art

[0002] The existing patent (Announcement No.: CN219327550U) proposes a safety protection bracket for underground coal mines, including a protective top cover, and the bottom of the protective top cover is fixedly installed with fixed blocks on both sides, and the bottom of the fixed block is fixedly installed with a support plate. The utility model sets a ventilation motor to suck the air and dust under the protective top cover into the interior of the cylinder, and then connects to the inside of the water tank through a connecting pipe. The water inside the water tank has a role of settling and adsorbing dust, and the air enters the interior of the filter box through the air guide pipe. However, in this device, "a support column is fixedly installed at the bottom of the support plate," and the support column fixes the height of the protective top cover, and its protection height cannot be adjusted accordingly according to the actual environment underground. The structural flexibility is poor, and there are disadvantages. Summary of the invention

[0003] In view of the above-mentioned deficiencies in the prior art, the utility model provides a support for underground coal seams, protects coal mining working faces, avoids the risks of coal seam collapse, subsidence, etc. caused by the instability between coal and rock, strengthens the safety and stability of the coal mining working faces, ensures safe production, and can adjust its protection height accordingly according to the actual underground environment. It has a flexible structure and strong applicability. It can also reduce the support height of the top plate, shorten the distance between the top plate and the bottom plate, reduce the overall height and volume of the protection bracket, and improve the convenience of transporting the protection bracket underground. It is an easy-to-adjust underground coal mining protection bracket.

[0004] The purpose of this utility model is achieved through the following technical solutions:

[0005] The worm gear is connected to the placement groove, and the outer surface of the worm gear fits the outer fixing vertical plate, and the outer fixing vertical plate is connected to the outer surface of the positioning support sleeve, and the positioning support sleeve is connected to the positioning support rod by a threaded connection inside. The positioning support rod is connected to the outer fixing vertical plate and the worm gear in turn. The worm gear has a positioning protrusion, and the positioning support rod has a positioning groove. The positioning protrusion is adapted to the positioning groove, and the positioning protrusion is connected to the positioning groove. The lower end of the positioning support rod has a fastening protrusion, and the outer fixing vertical plate has a protrusion groove, and the fastening protrusion is adapted to the protrusion groove, and the fastening protrusion is connected to the protrusion groove.

[0006] The utility model describes an external fixed vertical plate with an installation slot, which is adapted to an installation sleeve, which is connected to the installation slot, with fastening plates on both sides of the installation sleeve, and a fastening plate through-hole on the inner side of the external fixed vertical plate, with a fastening plate through-hole, a fastening protrusion with a fastening slot, a fastening plate through-hole, and a fastening slot adapted to the fastening plate, the fastening plate passes through the fastening plate through-hole, and the inner end of the fastening plate is connected to the fastening slot, the external side of the installation sleeve fits the external fixed vertical plate, and the internal side of the installation sleeve fits the driving connecting rod, with worms at both ends of the driving connecting rod, the worms are adapted to the worm wheel, and the worms are connected to the worm wheel.

[0007] Beneficial effects:

[0008] 1. The utility model roof supports the underground coal seam, protects the coal mining working face, avoids the risks of coal seam collapse and subsidence caused by the instability between coal and rock, strengthens the safety and stability of the coal mining working face, and ensures safe production.

[0009] 2. The utility model supports the bottom of the roof with an external fixed vertical plate, and controls the vertical lifting and lowering of the roof support height through the linkage between the worm, worm wheel, positioning support rod and positioning support sleeve, so as to meet the protection support needs of different coal mining environments, and at the same time, the roof is expanded outward to strengthen the strength of the bottom plate and the top plate to the outside to prevent the collapse and subsidence of the coal seam, improve the protection effect of the underground coal seam, and form a protection area under the roof to improve the safety of underground coal mining operations. When the roof is lowered to the maximum, the distance between the roof and the bottom plate can be shortened, the overall height and volume of the protective bracket can be reduced, and the convenience of transporting the protective bracket underground can be improved.

[0010] 3. The mounting support sleeve of the utility model provides a mounting fulcrum for the worm and its driving mechanism, and the fastening clamping plate it has increases the connecting fulcrum between the outer fixed vertical plate and the fastening protruding rod, and limits the position of the positioning support rod to keep its longitudinal height unchanged and perform axial rotation to avoid its disengagement and movement, which would affect the linkage effect between the components. The limiting clamping plate on the inner side of the limiting vertical plate increases the connecting fulcrum between the inner fixed vertical plate and the sliding rod, preventing the sliding rod from disengaging from the inner fixed vertical plate when rising, thereby improving the structural stability.

[0011] 4. The utility model supports the underground coal seam, protects the coal mining face, avoids the risks of coal seam collapse, subsidence and the like caused by the instability between coal and rock, strengthens the safety and stability of the coal mining face, ensures safe production, and can conveniently adjust its protection height according to the actual underground environment. It has a flexible structure and strong applicability. By lowering the support height of the top plate and reducing the distance between the top plate and the bottom plate, the overall height and volume of the protective bracket are reduced, thereby improving the convenience of transporting the protective bracket underground. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] Figure 1The utility model is a schematic diagram of the structure of an underground coal mining protective support that is easy to adjust.

[0013] Figure 2 This is a cross-sectional view of an easily adjustable underground coal mining protective support structure described in the utility model.

[0014] Figure 3 This is a cross-sectional view of the positioning support rod driving structure described in the utility model.

[0015] Figure 4 This is a schematic diagram of the installation support sleeve structure described in the utility model.

[0016] Figure 5 It is a cross-sectional view of the fastening convex rod limiting structure described in the utility model.

[0017] Figure 6 This is a schematic diagram of the bottom plate structure described in the utility model.

[0018] Figure 7 It is a cross-sectional view of the connection structure of the slide rod, the inner fixed vertical plate and the mounting support sleeve described in the utility model.

[0019] Figure 8 This is a cross-sectional view of the positioning support rod driving structure described in the utility model.

[0020] Fig. 9 This is a schematic diagram of the top plate structure described in the utility model.

[0021] Fig.10 This is an exploded view of the worm gear drive structure described in the utility model.

[0022] Fig.11 The utility model Figure 2 A magnified view of the local structure. DETAILED DESCRIPTION

[0023] The utility model is further described in detail below according to the accompanying drawings and embodiments:

[0024] Embodiment 1:

[0025] An adjustable underground coal mining protection support, comprising a top plate 01, a bottom plate 02, a positioning support rod 05, a worm gear 08, a driving connecting rod 10, a mounting support sleeve 11, a shaft rod 14, and a sliding rod 26. The top plate 01 has positioning support sleeves 04 on both sides, and a sliding rod 26 in the middle of the top plate 01. The top plate 01 supports the underground coal seam, protects the coal mining working face, avoids the risks of coal seam collapse and subsidence caused by the instability between coal and rock, strengthens the safety and stability of the coal mining working face, and ensures safe production. The bottom of the bottom plate 02 has a plurality of plug rods 03, the top of the bottom plate 02 has an inner fixed vertical plate 31, and the bottom of the bottom plate 02 has an outer fixed vertical plate 33 on both sides. The outer fixed vertical plate 33 has a placement groove 19, The placement groove 19 is adapted to the worm gear 08, and the worm gear 08 is connected to the placement groove 19. The outside of the worm gear 08 fits the external fixed vertical plate 33, and the external fixed vertical plate 33 is connected to the outside of the positioning support sleeve 04. The inside of the positioning support sleeve 04 is connected to the positioning support rod 05 by a thread. The positioning support rod 05 is sequentially connected to the external fixed vertical plate 33 and the worm gear 08. The worm gear 08 has a positioning protrusion 06, and the positioning support rod 05 has a positioning groove 07. The positioning protrusion 06 is adapted to the positioning groove 07, and the positioning protrusion 06 is connected to the positioning groove 07. The lower end of the positioning support rod 05 has a fastening protrusion 20, and the external fixed vertical plate 33 has a protrusion groove 21. The fastening protrusion 20 is adapted to the protrusion groove 21, and the fastening protrusion 20 is connected to the protrusion groove 21.

[0026] Embodiment 2:

[0027] The utility model described in the external fixed vertical plate 33 has a mounting slot 25, the mounting slot 25 is adapted to the mounting support sleeve 11, the mounting support sleeve 11 is connected to the mounting slot 25, the mounting support sleeve 11 has fastening card plates 22 on both sides, the inner side of the external fixed vertical plate 33 has a fastening card plate through hole 23, the fastening protrusion 20 has a fastening card slot 24, the fastening card plate through hole 23, the fastening card slot 24 is adapted to the fastening card plate 22, the fastening card plate 22 passes through the fastening card plate through hole 23, the inner end of the fastening card plate 22 is connected to the fastening card slot 24, the external side of the mounting support sleeve 11 fits the external fixed vertical plate 33, the internal side of the mounting support sleeve 11 fits the driving connecting rod 10, the driving connecting rod 10 has a worm 09 at both ends, the worm 09 is adapted to the worm wheel 08, the worm 09 The worm gear 08 is connected to the external fixed vertical plate 33 to support the bottom of the roof 01, and the supporting height of the roof 01 is controlled by the linkage between the worm 09, the worm gear 08, the positioning support rod 05 and the positioning support sleeve 04. While meeting the protective support needs of different coal mining environments, the roof 01 is expanded outward to reinforce the external tightening force of the bottom plate 02 and the roof 01 to prevent coal seam collapse and subsidence, improve the protection effect of the underground coal seam, and form a protection area at the bottom of the roof 01 to improve the safety of underground coal mining operations. When the roof 01 is reduced to the maximum, the distance between the roof 01 and the bottom plate 02 can be shortened, the overall height and volume of the protective support can be reduced, and the convenience of transporting the protective support underground can be improved.

[0028] Embodiment 3:

[0029] The utility model described in the installation support sleeve 11 has inner through holes 12 on both sides, and the outer fixed vertical plate 33 has an outer through hole 13. The inner through hole 12 and the outer through hole 13 are adapted to the shaft rod 14. The shaft rod 14 passes through the outer through hole 13 and the inner through hole 12 in sequence. The shaft rod 14 is connected to the driving connecting rod 10. The driving connecting rod 10 has a docking slot 18 at both ends. The shaft rod 14 has a docking plug rod 17, and the docking plug rod 17 is adapted to the docking slot 18. The docking plug rod 17 is connected to the docking slot 18. The shaft rod 14 is divided into a driving shaft rod 141 and a supporting shaft rod 142. The outer end of the driving shaft rod 141 is connected to the motor 15, and the motor 15 is connected to the outer fixed vertical plate 33. The supporting shaft The outer end of the rod 142 has an outer circular plate 16, and the outer circular plate 16 is in contact with the outer fixed vertical plate 33. The mounting sleeve 11 provides an installation fulcrum for the worm 09 and its driving mechanism, and the fastening clamping plate 22 it has increases the connection fulcrum between the outer fixed vertical plate 33 and the fastening protruding rod 20, and limits the position of the positioning support rod 05, so that it maintains the longitudinal height unchanged and rotates axially to avoid its disengagement and movement, which affects the linkage effect between the components. The limiting clamping plate 28 on the inner side of the limiting vertical plate 27 increases the connection fulcrum between the inner fixed vertical plate 31 and the sliding rod 26, preventing the sliding rod 26 from disengaging from the inner fixed vertical plate 31 when rising, thereby improving the structural stability.

[0030] Embodiment 4:

[0031] The utility model has a limit plate 27 on the upper part of the mounting support sleeve 11, the limit plate 27 is connected to the inner fixed plate 31, and the inner fixed plate 31 has slideways 32 on both sides, the slideways 32 are adapted to the slide rod 26, the slide rod 26 is connected to the slideway 32, and the slide rod 26 slides in the slideway 32. The slide bar 26 has a limiting slide groove 30, and limiting card plate perforations 29 are provided on both sides of the inner fixed vertical plate 31. The inner side of the limiting vertical plate 27 has a limiting card plate 28. The limiting card plate 28 is adapted to the limiting card plate perforations 29 and the limiting slide groove 30. The limiting card plate 28 passes through the limiting card plate perforations 29, and the inner end of the limiting card plate 28 is connected to the limiting slide groove 30. This device supports the underground coal seam and protects the coal mining working face to avoid the risks of coal seam collapse and subsidence caused by the instability between coal and rock, strengthens the safety and stability of the coal mining working face, ensures safe production, and can adjust its protection height accordingly according to the actual underground environment. It has a flexible structure and strong applicability. By lowering the support height of the top plate 01 and reducing the distance between the top plate 01 and the bottom plate 02, the overall height and volume of the protection bracket are reduced, thereby improving the convenience of transportation of the protection bracket underground.

[0032] Embodiment 5:

[0033] Installation steps: first, insert the worm gear 08 into the placement groove 19 and place it in the external fixed vertical plate 33, then connect the positioning support rod 05 to the external fixed vertical plate 33 and the worm gear 08 in sequence, until the fastening protrusion 20 is embedded in the protrusion groove 21, and the control protrusion 06 is embedded in the control groove 07, and the fastening card plate through hole 23 corresponds to the position of the fastening card slot 24, then place the top plate 01 on the upper part of the bottom plate 02, and the positioning support sleeve 04 and the slide rod 26 are respectively embedded in the external fixed vertical plate 33 and the slideway 32, the positioning support sleeve 04 is sleeved on the outside of the positioning support rod 05 and is connected to it through threads for positioning, the limiting slide groove 30 corresponds to the position of the limiting card plate through hole 29, then place the driving connecting rod 10 into the installation support sleeve 11, and then place the installation support sleeve 11 into the installation card slot 25, and with The outer fixed vertical plates 33 are fixedly connected, and the fastening card plate 22 passes through the fastening card plate through-hole 23 and is embedded in the fastening card slot 24. The inner through-hole 12 corresponds to the outer through-hole 13 in position. The worm 09 on both sides corresponds to the worm wheels 08 on both sides and is connected. The inner surface of the limiting vertical plate 27 fits with the outer surface of the inner fixed vertical plate 31. The limiting card plate 28 passes through the limiting card plate through-hole 29 and is embedded in the limiting slide groove 30. Then the shaft rod 14 passes through the outer through-hole 13 and the inner through-hole 12 in turn, and is fixedly connected with the driving connecting rod 10, and the docking rod 17 is embedded in the docking slot 18. The inner surface of the outer circular plate 16 fits with the outer fixed vertical plate 33. Finally, the motor 15 is installed and fixed to the outside of the outer fixed vertical plate 33, and is drivingly connected with the driving shaft rod 141 to complete the installation.

[0034] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. It should be pointed out that a person skilled in the art can make several improvements and modifications without departing from the technical principle of the present invention, and these improvements and modifications should also be regarded as within the protection scope of the present invention.

Claims

1. An adjustable underground coal mining protection support, characterized in that : comprising a top plate (01), a bottom plate (02), a positioning support rod (05), a worm gear (08), a driving connecting rod (10), a mounting support sleeve (11), a shaft rod (14), and a sliding rod (26), wherein the top plate (01) has positioning support sleeves (04) on both sides, the top plate (01) has a sliding rod (26) in the middle, the bottom plate (02) has a plurality of insertion rods (03) at the bottom, the bottom plate (02) has an inner fixed vertical plate (31) at the top, the bottom plate (02) has outer fixed vertical plates (33) on both sides, the outer fixed vertical plate (33) has a placement groove (19), the placement groove (19) and The worm wheel (08) is adapted to the worm wheel (08), the worm wheel (08) is connected to the placement groove (19), the outside of the worm wheel (08) is fitted to the external fixed vertical plate (33), the external fixed vertical plate (33) is connected to the outside of the positioning support sleeve (04), the inside of the positioning support sleeve (04) is connected to the positioning support rod (05) through a thread, the positioning support rod (05) is connected to the external fixed vertical plate (33) and the worm wheel (08) in sequence, the worm wheel (08) has a control block (06), the positioning support rod (05) has a control groove (07), the control block (06) is adapted to the control groove (07), the control block (06) is connected to the control block The groove (07) is provided at the lower end of the positioning support rod (05), the outer fixed vertical plate (33) has a convex rod groove (21), the fastening convex rod (20) is adapted to the convex rod groove (21), and the fastening convex rod (20) is connected to the convex rod groove (21); the outer fixed vertical plate (33) has an installation card groove (25), the installation card groove (25) is adapted to the installation support sleeve (11), the installation support sleeve (11) is connected to the installation card groove (25), the installation support sleeve (11) has fastening card plates (22) on both sides, and the inner side of the outer fixed vertical plate (33) has fastening card plate through holes (22) 3), the fastening protruding rod (20) has a fastening slot (24), the fastening card plate through hole (23), the fastening slot (24) is adapted to the fastening card plate (22), the fastening card plate (22) passes through the fastening card plate through hole (23), the inner end of the fastening card plate (22) is connected to the fastening slot (24), the outer portion of the mounting support sleeve (11) is fitted to the outer fixed vertical plate (33), the inner portion of the mounting support sleeve (11) is fitted to the driving connecting rod (10), the driving connecting rod (10) has a worm (09) at both ends, the worm (09) is adapted to the worm wheel (08), and the worm (09) is connected to the worm wheel (08);The mounting sleeve (11) has inner holes (12) on both sides, and the outer fixed vertical plate (33) has an outer hole (13). The inner hole (12) and the outer hole (13) are adapted to the shaft rod (14). The shaft rod (14) passes through the outer hole (13) and the inner hole (12) in sequence. The shaft rod (14) is connected to the driving connecting rod (10). Both ends of the driving connecting rod (10) have docking slots (18). The shaft rod (14) has a docking plug rod (17). The docking plug rod (17) is adapted to the docking slot (18). The docking plug rod (17) is connected to the docking slot (18). The shaft rod (14) is divided into a driving shaft rod (141) and a supporting shaft rod (142). The outer end of the driving shaft rod (141) is connected to the motor (15). The motor (15) is connected to the outer fixed vertical plate (33). The outer end of the supporting shaft rod (142) has an outer circular plate ( 16), the outer circular plate (16) is fitted to the outer fixed vertical plate (33); the upper part of the mounting support sleeve (11) is provided with a limit vertical plate (27), the limit vertical plate (27) is connected to the inner fixed vertical plate (31), and the inner fixed vertical plate (31) has slideways (32) on both sides, the slideways (32) are adapted to the slide rod (26), the slide rod (26) is connected to the slideways (32), and the slide rod (26) slides in the slideways (32); The slide bar (26) has a limiting slide groove (30), both sides of the inner fixed vertical plate (31) have limiting card plate perforations (29), the inner side of the limiting vertical plate (27) has a limiting card plate (28), the limiting card plate (28) is adapted to the limiting card plate perforations (29) and the limiting slide groove (30), the limiting card plate (28) passes through the limiting card plate perforations (29), and the inner end of the limiting card plate (28) is connected to the limiting slide groove (30). ;

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