CN112392527A - Anti-impact coal mine supporting frame and using method - Google Patents
Anti-impact coal mine supporting frame and using method Download PDFInfo
- Publication number
- CN112392527A CN112392527A CN202011267145.XA CN202011267145A CN112392527A CN 112392527 A CN112392527 A CN 112392527A CN 202011267145 A CN202011267145 A CN 202011267145A CN 112392527 A CN112392527 A CN 112392527A
- Authority
- CN
- China
- Prior art keywords
- block
- sliding
- unit
- fixed
- rod
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
- 239000003245 coal Substances 0.000 title claims abstract description 37
- 238000000034 method Methods 0.000 title claims description 12
- 230000003139 buffering effect Effects 0.000 claims abstract description 56
- 230000000694 effects Effects 0.000 claims description 22
- 230000003014 reinforcing effect Effects 0.000 claims description 14
- 239000003351 stiffener Substances 0.000 claims description 14
- 238000000926 separation method Methods 0.000 claims description 8
- 230000008859 change Effects 0.000 description 8
- 230000009471 action Effects 0.000 description 4
- 229910003460 diamond Inorganic materials 0.000 description 4
- 239000010432 diamond Substances 0.000 description 4
- 230000035939 shock Effects 0.000 description 4
- 229910001294 Reinforcing steel Inorganic materials 0.000 description 3
- 238000010586 diagram Methods 0.000 description 3
- 230000002349 favourable effect Effects 0.000 description 3
- 230000009286 beneficial effect Effects 0.000 description 2
- 239000011435 rock Substances 0.000 description 2
- 230000004075 alteration Effects 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 230000008602 contraction Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000005065 mining Methods 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000005192 partition Methods 0.000 description 1
- 230000004044 response Effects 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
Images
Classifications
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH DRILLING; MINING
- E21D—SHAFTS; TUNNELS; GALLERIES; LARGE UNDERGROUND CHAMBERS
- E21D17/00—Caps for supporting mine roofs
- E21D17/01—Caps for supporting mine roofs characterised by the shape of the cap, e.g. of specified cross-section
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH DRILLING; MINING
- E21D—SHAFTS; TUNNELS; GALLERIES; LARGE UNDERGROUND CHAMBERS
- E21D15/00—Props; Chocks, e.g. made of flexible containers filled with backfilling material
- E21D15/02—Non-telescopic props
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH DRILLING; MINING
- E21D—SHAFTS; TUNNELS; GALLERIES; LARGE UNDERGROUND CHAMBERS
- E21D15/00—Props; Chocks, e.g. made of flexible containers filled with backfilling material
- E21D15/50—Component parts or details of props
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH DRILLING; MINING
- E21D—SHAFTS; TUNNELS; GALLERIES; LARGE UNDERGROUND CHAMBERS
- E21D15/00—Props; Chocks, e.g. made of flexible containers filled with backfilling material
- E21D15/50—Component parts or details of props
- E21D15/54—Details of the ends of props
- E21D15/55—Details of the ends of props of prop heads or feet
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH DRILLING; MINING
- E21D—SHAFTS; TUNNELS; GALLERIES; LARGE UNDERGROUND CHAMBERS
- E21D17/00—Caps for supporting mine roofs
- E21D17/10—Details of mine caps for engaging the tops of pit-props, with or without retaining-plates; Retaining-plates
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E10/00—Energy generation through renewable energy sources
- Y02E10/50—Photovoltaic [PV] energy
Abstract
The invention discloses an anti-impact coal mine support frame which comprises a bottom rod and an inclined strut angle adjusting unit; the top of the bottom rod is provided with two inclined strut height adjusting units through inclined strut angle adjusting units, two sides of the bottom of the ejector rod are respectively and movably connected with the tops of the two inclined struts through hinged supports, the top of the ejector rod is provided with a top supporting unit through a transverse buffering unit, and a vertical buffering unit is arranged between the inner side of the top supporting unit and the transverse buffering unit; the inclined strut angle adjusting unit comprises a strip-shaped groove, a first sliding block, a hydraulic telescopic rod and an adjusting seat, wherein the strip-shaped groove is formed in the bottom rod, and two first sliding blocks are connected to two ends of the strip-shaped groove in a sliding mode respectively. The height can be adjusted in a large size, the height can also be finely adjusted by adjusting the inclination of the inclined strut, so that the supporting strength of the supporting frame is enhanced, impact buffering can be provided in all directions, the buffering sufficiency is ensured, the buffering effect is good, and the supporting of a coal mine is facilitated.
Description
Technical Field
The invention relates to the technical field of coal mine support, in particular to an anti-impact coal mine support frame and a using method thereof.
Background
The support frame is used for supporting in coal mines, however, deep mining is a necessary trend of development of the coal industry, and the composition structure characteristics, deformation and damage characteristics, energy release characteristics and engineering response characteristics of deep coal and rock masses are obviously different from those of shallow parts, so that rock burst disasters are easily induced, and serious underground damage and casualty accidents are caused;
at present, in order to avoid low-pressure impact disasters, supporting frames with impact resistance can be used, but the supporting frames are generally buffered by hydraulic cylinders, the buffering is insufficient, the buffering angle is limited, the impact relieving effect is poor, and the supporting of a coal mine is not facilitated.
Disclosure of Invention
The invention aims to overcome the existing defects and provides an anti-impact coal mine support frame and a using method thereof, which can adjust the height in a large size and also can adjust the inclination of an inclined strut to finely adjust the height, so that the support strength of the support frame is enhanced, impact buffering can be provided in all directions, the buffering sufficiency is ensured, the buffering effect is good, the coal mine support frame is beneficial to supporting, and the problems in the background art can be effectively solved.
In order to achieve the purpose, the invention provides the following technical scheme: an anti-impact coal mine supporting frame comprises a bottom rod, an inclined strut angle adjusting unit, an inclined strut height adjusting unit, an ejector rod, a transverse buffering unit, a vertical buffering unit and a top supporting unit;
the top of the bottom rod is provided with two inclined strut height adjusting units through inclined strut angle adjusting units, two sides of the bottom of the ejector rod are respectively and movably connected with the tops of the two inclined struts through hinged supports, the top of the ejector rod is provided with a top supporting unit through a transverse buffering unit, and a vertical buffering unit is arranged between the inner side of the top supporting unit and the transverse buffering unit;
the inclined strut angle adjusting unit comprises a bar-shaped groove, first sliding blocks, a hydraulic telescopic rod and adjusting seats, the bar-shaped groove is formed in the bottom rod, the two ends of the bar-shaped groove are respectively connected with the first sliding blocks in a sliding mode, the first sliding blocks are respectively fixed with an inclined strut height adjusting unit, the two inclined strut height adjusting units are respectively provided with the adjusting seats, the two adjusting seats are connected through the hydraulic telescopic rod, and the tops of the two adjusting seats are respectively movably connected with the bottoms of the two inclined struts.
Can improve the ejector pin height of locating through diagonal brace height adjustment unit, thereby improve top supporting unit's height, make top supporting unit support to the top in mine hole, diagonal brace angle adjustment unit can change the inclination of diagonal brace, thereby make top supporting unit's height can further be adjusted, and also can cushion partly impact force through hydraulic telescoping rod, can be respectively at horizontal and vertical buffering power that provides through horizontal buffering unit and vertical buffering unit, be favorable to the intensity of strutting and the ability of protecting against shock.
Further, the height adjusting unit for the inclined strut comprises a U-shaped mounting frame, a screw rod, a sliding rod, a hexagonal block and a first movable block, the bottom of the U-shaped mounting frame is fixed on the first sliding block, a vertical sliding rod is fixed on the inner side of the U-shaped mounting frame, the screw rod is connected to the inner side of the U-shaped mounting frame in a rotating mode, the top of the screw rod penetrates through the end portion of the U-shaped mounting frame and is connected with the hexagonal block, a screw hole and a sliding hole are formed in the first movable block respectively, the screw hole and the screw rod are connected in a threaded mode, the sliding hole and the sliding rod are connected in the first movable block in a sliding mode, and an adjusting seat is fixed on. The screw rod can be driven to rotate by twisting the hexagonal block, the first movable block can be driven to move along the sliding rod by the screw rod through the thread effect, and therefore the height of the first movable block is changed to drive the adjusting seat to change the height.
Furthermore, the height adjusting unit of the inclined strut comprises a U-shaped frame, a vertical groove, a vertical sliding block, a hydraulic cylinder and a movable block II, wherein the bottom of the U-shaped frame is fixed on the first sliding block, the vertical groove is formed in the inner side of the U-shaped frame, the bottom of the inner side of the U-shaped frame is fixedly connected with the bottom end of the hydraulic cylinder, the movable block II is fixed at the top end of the hydraulic cylinder, the vertical sliding block is fixed on the side face of the movable block II, the vertical sliding block is connected with the vertical groove in a sliding mode, and an adjusting seat is fixed on the side face of the movable block II. The stability of the up-and-down movement of the second movable block can be improved by the sliding of the vertical groove and the vertical sliding block, and the power for the movement of the second movable block is provided by the hydraulic cylinder.
Further, the transverse buffer unit comprises a guide rod, a first long spring, a second sliding block, a short spring, a separation block and a sliding groove, the sliding groove is formed in the ejector rod, the separation block is fixed in the middle of the sliding groove to separate the sliding groove into two sub grooves, the guide rods are arranged in the two sub grooves of the sliding groove respectively, the middle portions of the two guide rods penetrate through side sliding holes of the two sliding blocks respectively, the second sliding block is connected with the sub grooves in a sliding mode, the first long spring is sleeved at one end, close to the separation block, of each guide rod, and the short spring is sleeved at one end, far away from the separation block, of each guide rod.
The second sliding block can move along the guide rod during movement, so that the first long spring and the second short spring can be driven to generate plastic deformation, and the buffering force for the second sliding block is provided.
Further, top support unit includes inner arc board, stiffener one, stiffener two, outer arc board and reinforcing bar, the both ends of inner arc board respectively with two fixed connection of slider, and the outside of outer arc board is connected through the V-arrangement pole in the outside of inner arc board, and is equipped with the reinforcing bar that improves plastic deformation intensity in the both sides arc wall of inner arc board, the V-arrangement pole comprises stiffener one, stiffener two.
The whole arc structure that is of top supporting unit improves support intensity, and outer arc board plays the guard action, and inner arc board and reinforcing bar can produce plastic deformation and provide the buffering, and the joint strength of outer arc board and inner arc board can be guaranteed to stiffener one, stiffener two.
Further, vertical buffer unit includes pivot, activity down tube, loose axle, telescopic link, extension spring one and arc kickstand, the top of dividing the piece has two activity down tubes that are the V-arrangement and distribute through pivot swing joint, and the top of two activity down tubes is fixed with the arc kickstand respectively, the inboard contact of arc kickstand and interior arc board, the both ends of loose axle swing joint telescopic link are passed through at the middle part of two activity down tubes, extension spring one has been cup jointed on the telescopic link, and the middle part at the activity down tube is fixed connection respectively at the both ends of extension spring one.
When the inner arc board pushed down, two activity down tubes opened because arc bracer and the inboard slip of inner arc board, and the telescopic link can extend this moment, stretches stretching spring one, and stretching spring one has the shrink trend to provide vertical buffering.
Further, the vertical buffer unit comprises a mounting plate, a support block, two vertical rods, a mounting column, two side supports, two transverse rods, a center block, two movable connecting seats, a cylinder body, an end block, two movable supporting columns, two extension springs and a middle spring, the mounting plate is fixed at the top of the support block, the two ends of the top of the mounting plate are respectively movably connected with the bottom ends of the two vertical rods through the support block, the inner sides of the top ends of the two vertical rods are respectively movably connected with the side supports, the side surfaces of the two side supports are respectively fixedly connected with one end of the two transverse rods, the other ends of the two transverse rods are oppositely arranged and respectively connected with the movable connecting seats, the two movable connecting seats are respectively movably connected with the two sides of the center block from top to bottom, the movable supporting columns are connected with the top of the center block, the bottom round holes of, two ends of the second extension spring are fixedly connected with the end block and the inner bottom of the barrel respectively, the top of the barrel is fixedly connected with the inner arc top of the inner arc plate, the middle parts of the inner sides of the two vertical rods are respectively fixed with a mounting column, and two ends of the middle spring are respectively fixedly connected with the mounting columns.
The inner arc board pushes down, pushes down the barrel to make the top of activity pillar to the barrel internalization, thereby to two extension spring elongations, let extension spring two provide partly vertical buffer power, the centre block descends moreover, thereby makes two horizontal pole angle changes, thereby drives the angle change between two montants, can exert an influence to middle part spring this moment, can provide another part buffering through the middle part spring.
Further, the vertical buffer unit comprises a support ring, a support block, three corner blocks, a connecting rod, side plates, a buffer sliding column, a sliding ring, a limiting block and a third extension spring, the third extension spring is sleeved in the middle of the buffer sliding column, the two ends of the third extension spring are fixedly connected with the sliding ring respectively, the two sliding rings are slidably connected with the buffer sliding column respectively, the upper side and the lower side of each sliding ring are fixedly provided with the side plates respectively, each side plate is movably connected with one end of the connecting rod respectively, the other ends of the two connecting rods on the upper side are movably connected with the three corner blocks on the upper side, the other ends of the two connecting rods on the lower side are movably connected with the three corner blocks on the lower side, the four connecting rods form a diamond structure, the top of each partition block is fixedly connected with the three corner blocks on the lower side, the three corner blocks on the upper side are, two ends of the buffer sliding column are respectively in threaded connection with a limiting block.
The inner arc plate is pressed downwards to the support ring, at the moment, the connecting rod pushes the two sliding rings to move towards the two ends of the buffering sliding column due to the instability of the diamond structure, at the moment, the three extension springs at the middle parts of the buffering sliding column are driven, the buffering force is provided through the three extension springs, and the buffering force provided by the three transverse extension springs is converted into vertical buffering.
Further, still include the fixed unit in bottom, the fixed unit in bottom includes fixed plate, fixed inserted bar and fixed head, the both ends bottom of sill bar is fixed with the fixed plate of perpendicular to sill bar respectively, it has fixed inserted bar to alternate respectively in the both ends round hole of fixed plate, the top of fixed inserted bar is fixed with the fixed head. The fixed inserted bar fixes the fixed plate at the bottom of the mine, and the fixed head is used for preventing the fixed plate from being separated from the fixation of the fixed inserted bar.
A use method of an anti-impact coal mine supporting frame is characterized by comprising the following steps: comprises the following steps;
the method comprises the following steps: the bottom is fixed, the supporting frame is integrally placed in a coal mine hole, and then the bottom of the supporting frame is fixed in position through a bottom fixing unit;
step two: adjusting the height, namely adjusting the height of the inclined strut by using an inclined strut height adjusting unit to enable a top supporting unit at the top of the supporting frame to contact the top of the coal mine hole;
step three: the contact strength is improved, and the distance between the two diagonal brace height adjusting units is reduced through the diagonal brace angle adjusting units, so that the angles of the two diagonal braces are reduced, the height of the ejector rod is further increased, and the supporting force of the top supporting unit is increased;
step four: provide the impact force degree, use horizontal buffer unit and vertical buffer unit to provide horizontal and vertical buffering respectively to top supporting element can produce plastic deformation and provide protecting against shock effect.
Compared with the prior art, the invention has the beneficial effects that: the anti-impact coal mine support frame and the use method have the following advantages:
1. can improve the ejector pin height of locating through diagonal brace height adjustment unit, thereby improve top supporting unit's height, make top supporting unit support to the top in mine hole, diagonal brace angle adjustment unit can change the inclination of diagonal brace, thereby make top supporting unit's height can further be adjusted, and also can cushion partly impact force through hydraulic telescoping rod, can be respectively at horizontal and vertical buffering power that provides through horizontal buffering unit and vertical buffering unit, be favorable to the intensity of strutting and the ability of protecting against shock.
2. The whole arc structure that is of top supporting unit improves support intensity, and outer arc board plays the guard action, and inner arc board and reinforcing bar can produce plastic deformation and provide the buffering, and the joint strength of outer arc board and inner arc board can be guaranteed to stiffener one, stiffener two.
3. The height can be adjusted in a large size, the height can also be finely adjusted by adjusting the inclination of the inclined strut, so that the supporting strength of the supporting frame is enhanced, impact buffering can be provided in all directions, the buffering sufficiency is ensured, the buffering effect is good, and the supporting of a coal mine is facilitated.
Drawings
FIG. 1 is a schematic structural view of the present invention;
FIG. 2 is an enlarged top view of the present invention;
FIG. 3 is an enlarged view of a portion of FIG. 1;
FIG. 4 is a schematic structural diagram of another embodiment of a height adjustment unit for a diagonal brace according to the present invention;
FIG. 5 is a schematic view of the construction of the inner arc plate and the reinforcing bars of the present invention;
FIG. 6 is a schematic structural diagram of a vertical buffer unit according to a second embodiment of the present invention;
fig. 7 is a schematic structural diagram of a vertical buffer unit according to a third embodiment of the present invention.
In the figure: 1 bottom rod, 2 diagonal brace, 3 diagonal brace angle adjusting unit, 31 strip-shaped groove, 32 sliding block I, 33 hydraulic telescopic rod, 34 adjusting seat, 4 diagonal brace height adjusting unit, 401U-shaped mounting rack, 402 screw rod, 403 sliding rod, 404 hexagonal block, 405 movable block I, 411U-shaped frame, 412 vertical groove, 413 vertical sliding block, 414 hydraulic cylinder, 415 movable block II, 5 ejector rods, 6 transverse buffer unit, 61 guide rod, 62 long spring I, 63 sliding block II, 64 short spring, 65 separating block, 66 sliding chute, 7 vertical buffer unit, 701 rotating shaft, 702 movable diagonal bar, 703 movable shaft, telescopic rod 704, 705 stretching spring I, 706 arc supporting block, 711 mounting plate, 712 supporting block, 713 vertical bar, 714 mounting column, 715 side support, 716 cross bar, 717 central block, 718 movable connecting seat, 719 cylinder, 720, 721 movable column, 722 stretching spring 723, 741 supporting ring, 741, end block, supporting ring, and end block, 742 supporting block, 743 triangle block, 744 connecting rod, 745 side plate, 746 buffer sliding column, 747 sliding ring, 748 limiting block, 749 extension spring III, 8 top supporting unit, 801 inner arc plate, 802 reinforcing rod I, 803 reinforcing rod II, 804 outer arc plate, 805 reinforcing steel bar, 9 hinged support, 10 bottom fixing unit, 101 fixing plate, 102 fixing inserted bar and 103 fixing head.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
In the first embodiment, please refer to fig. 1-3 and fig. 5, the present embodiment provides a technical solution: an anti-impact coal mine supporting frame comprises a bottom rod 1, an inclined strut 2, an inclined strut angle adjusting unit 3, an inclined strut height adjusting unit 4, an ejector rod 5, a transverse buffering unit 6, a vertical buffering unit 7 and a top supporting unit 8;
the top of the bottom rod 1 is provided with two diagonal strut height adjusting units 4 through diagonal strut angle adjusting units 3, two sides of the bottom of the ejector rod 5 are respectively movably connected with the tops of the two diagonal struts 2 through hinged supports 9, the top of the ejector rod 5 is provided with a top supporting unit 8 through a transverse buffering unit 6, and a vertical buffering unit 7 is arranged between the inner side of the top supporting unit 8 and the transverse buffering unit 6;
the diagonal brace angle adjusting unit 3 comprises a strip-shaped groove 31, first sliding blocks 32, a hydraulic telescopic rod 33 and adjusting seats 34, the strip-shaped groove 31 is formed in the bottom rod 1, two ends of the strip-shaped groove 31 are respectively connected with the first sliding blocks 32 in a sliding mode, the first sliding blocks 32 are respectively fixed with diagonal brace height adjusting units 4, the adjusting seats 34 are respectively installed on the two diagonal brace height adjusting units 4, the two adjusting seats 34 are connected through the hydraulic telescopic rod 33, and the tops of the two adjusting seats 34 are respectively movably connected with the bottoms of the two diagonal braces 2.
The hydraulic telescopic rod 33 can stretch out and draw back and can drive two first sliding blocks 32 to slide in the strip-shaped groove 31, so that the distance between the two diagonal brace height adjusting units 4 is changed, the supporting angle of the two diagonal braces 2 is finally changed, and the hydraulic telescopic rod 33 can also provide a part of impact-proof effect.
Can improve the height that ejector pin 5 is located through diagonal brace height adjustment unit 4, thereby improve top supporting unit 8's height, make top supporting unit 8 support to the top in mine hole, diagonal brace angle adjustment unit 3 can change the inclination of diagonal brace 2, thereby make top supporting unit 8's height can further be adjusted, and also can cushion partly impact force through hydraulic telescoping rod 33, can be respectively at horizontal and vertical buffering power that provides through horizontal buffer unit 6 and vertical buffer unit 7, be favorable to the intensity of strutting and the ability of protecting against shock.
The diagonal brace height adjusting unit 4 comprises a U-shaped mounting frame 401, a screw 402, a sliding rod 403, a hexagonal block 404 and a first movable block 405, the bottom of the U-shaped mounting frame 401 is fixed on the first sliding block 32, the inner side of the U-shaped mounting frame 401 is fixed with the vertical sliding rod 403, the inner side of the U-shaped mounting frame 401 is rotatably connected with the screw 402, the top of the screw 402 penetrates through the end of the U-shaped mounting frame 401 and is connected with the hexagonal block 404, the first movable block 405 is provided with a screw hole and a sliding hole respectively, the screw hole on the first movable block 405 is in threaded connection with the screw 402, the sliding hole on the first movable block 405 is in sliding connection with the sliding rod 403, and the side face of the first movable block. The screw 402 can be driven to rotate by twisting the hexagonal block 404, and the screw 402 can drive the first movable block 405 to move along the sliding rod 403 through the screw action, so that the height of the first movable block 405 is changed to drive the adjusting seat 34 to change the height.
The transverse buffer unit 6 comprises a guide rod 61, a first long spring 62, a second sliding block 63, a short spring 64, a separating block 65 and a sliding groove 66, the sliding groove 66 is formed in the ejector rod 5, the separating block 65 is fixed in the middle of the sliding groove 66 to separate the sliding groove 66 into two sub-grooves, the guide rods 61 are arranged in the two sub-grooves of the sliding groove 66 respectively, the middle parts of the two guide rods 61 penetrate through side sliding holes of the two sliding blocks 63 respectively, the second sliding blocks 63 are in sliding connection with the sub-grooves, the first long spring 62 is sleeved at one end, close to the separating block 65, of each guide rod 61, and the short spring 64 is sleeved at one end, far away from the separating block 65.
The second sliding block 63 moves along the guide rod 61 when moving, so that the first long spring 62 and the second short spring 64 are driven to generate plastic deformation, and the buffering force for the second sliding block 63 is provided.
The top supporting unit 8 comprises an inner arc plate 801, a first reinforcing rod 802, a second reinforcing rod 803, an outer arc plate 804 and reinforcing steel bars 805, two ends of the inner arc plate 801 are fixedly connected with two sliding blocks 63 respectively, the outer side of the inner arc plate 801 is connected with the outer side of the outer arc plate 804 through a V-shaped rod, reinforcing steel bars 805 for improving plastic deformation strength are arranged in arc grooves on two sides of the inner arc plate 801, and the V-shaped rod is composed of the first reinforcing rod 802 and the second reinforcing rod 803.
The whole arc structure that is of top support unit 8 improves support intensity, and outer arc board 804 plays the guard action, and inner arc board 801 and reinforcing bar 805 can produce plastic deformation and provide the buffering, and outer arc board 804 and inner arc board 801's joint strength can be guaranteed to stiffener one 802, stiffener two 803.
When the inner arc plate 801 is pressed downwards, the two movable inclined rods 702 are opened due to the fact that the arc supporting blocks 706 and the inner side of the inner arc plate 801 slide, at the moment, the telescopic rods 704 can stretch to stretch the first stretching springs 705, and the first stretching springs 705 have a contraction trend, so that vertical buffering is provided.
Still include bottom fixed unit 10, bottom fixed unit 10 includes fixed plate 101, fixed inserted bar 102 and fixed head 103, and the both ends bottom of sill bar 1 is fixed with the fixed plate 101 of perpendicular to sill bar 1 respectively, and the fixed inserted bar 102 has been alternate respectively in the both ends round hole of fixed plate 101, and the top of fixed inserted bar 102 is fixed with fixed head 103. The fixing plunger 102 fixes the fixing plate 101 to the bottom of the mine shaft, and the fixing head 103 is used to prevent the fixing plate 101 from being detached from the fixing of the fixing plunger 102.
A use method of an anti-impact coal mine supporting frame is characterized by comprising the following steps: comprises the following steps;
the method comprises the following steps: bottom fixing, namely integrally placing the support frame in a coal mine hole, and then fixing the position of the bottom of the support frame through a bottom fixing unit 10;
step two: adjusting the height, namely adjusting the height of the diagonal brace 2 by using a diagonal brace height adjusting unit 4 to enable a top supporting unit 8 at the top of the supporting frame to contact the top of the coal mine hole;
step three: the contact strength is improved, and the distance between the two diagonal brace height adjusting units 4 is reduced through the diagonal brace angle adjusting unit 3, so that the angles of the two diagonal braces 2 are reduced, the height of the ejector rod 5 is further improved, and the supporting force of the top supporting unit 8 is improved;
step four: providing impact force, providing lateral and vertical cushioning using lateral cushioning elements 6 and vertical cushioning elements 7, respectively, and top support element 8 can be plastically deformed to provide impact resistance.
In the second embodiment, referring to fig. 4, the present embodiment provides a technical solution: an impact-resistant coal mine support frame, the structure of the embodiment is substantially the same as that of the first embodiment, and the differences are that: the height adjusting unit 4 of the inclined strut comprises a U-shaped frame 411, a vertical groove 412, a vertical sliding block 413, a hydraulic cylinder 414 and a movable block II 415, wherein the bottom of the U-shaped frame 411 is fixed on the sliding block I32, the vertical groove 412 is formed in the inner side of the U-shaped frame 411, the bottom of the inner side of the U-shaped frame 411 is fixedly connected with the bottom end of the hydraulic cylinder 414, the movable block II 415 is fixed at the top end of the hydraulic cylinder 414, the vertical sliding block 413 is fixed on the side face of the movable block II 415, the vertical sliding block 413 is connected with the vertical groove 412 in a sliding mode, and an adjusting seat 34 is fixed on.
The stability of the up-and-down movement of the second movable block 415 can be improved by the sliding of the vertical groove 412 and the vertical sliding block 413, and the power for the movement of the second movable block 415 is provided by the hydraulic cylinder 414.
In the third embodiment, referring to fig. 6, the present embodiment provides a technical solution: an impact-resistant coal mine support frame, the structure of the embodiment is substantially the same as that of the first embodiment, and the differences are that: the vertical buffer unit 7 comprises a mounting plate 711, a supporting block 712, vertical rods 713, a mounting column 714, side supporting seats 715, cross rods 716, a central block 717, movable connecting seats 718, a cylinder 719, an end block 720, movable supporting columns 721, a second extension spring 722 and a middle spring 723, the mounting plate 711 is fixed at the top of the separating block 65, two ends of the top of the mounting plate 711 are respectively movably connected with the bottom ends of the two vertical rods 713 through the supporting block 712, the inner sides of the top ends of the two vertical rods 713 are respectively and movably connected with the side supporting seats 715, the side surfaces of the two side supporting seats 715 are respectively and fixedly connected with one end of the two cross rods 716, the other ends of the two cross rods 716 are oppositely arranged and respectively connected with the movable connecting seats 718, the two movable connecting seats 718 are respectively and movably connected with two sides of the central block 717 up and down, the top of the central, the part of the movable support 721 located in the cylinder 719 is sleeved with a second extension spring 722, two ends of the second extension spring 722 are fixedly connected with the end block 720 and the bottom of the inner side of the cylinder 719 respectively, the top of the cylinder 719 is fixedly connected with the inner arc top of the inner arc plate 801, the middle parts of the inner sides of the two vertical rods 713 are respectively fixed with a mounting column 714, and two ends of a middle spring 723 are respectively fixedly connected with the mounting columns 714.
The inner arc plate 801 pushes down, pushes down the barrel 719, so that the top of the movable support 721 moves towards the inside of the barrel 719, stretches the second extension spring 722, allows the second extension spring 722 to provide a part of vertical buffering force, and the central block 717 descends, so that the two cross rods 716 change in angle, so as to drive the angle change between the two vertical rods 713, and at the moment, the middle spring 723 is influenced, and the other part of buffering can be provided through the middle spring 723.
In a fourth embodiment, referring to fig. 7, the present embodiment provides a technical solution: an impact-resistant coal mine support frame, the structure of the embodiment is substantially the same as that of the first embodiment, and the differences are that: the vertical buffer unit 7 comprises a support ring 741, a support block 742, triangular blocks 743, connecting rods 744, side plates 745, buffer sliding columns 746, sliding rings 747, limit blocks 748 and three extension springs 749, the middle parts of the buffer sliding columns 746 are sleeved with the three extension springs 749, two ends of the three extension springs 749 are respectively and fixedly connected with the sliding rings 747, the two sliding rings 747 are respectively and slidably connected with the buffer sliding columns 746, the upper and lower sides of the sliding rings 747 are respectively and fixedly provided with the side plates 745, each side plate 745 is respectively and movably connected with one end of a connecting rod 744, the other ends of the two connecting rods 744 on the upper side are movably connected with the triangular blocks 743 on the upper side, the other ends of the two connecting rods 744 on the lower side are movably connected with the triangular blocks 743 on the lower side, the four connecting rods 744 form a diamond structure, the top of the separation block 65 is fixedly connected with the triangular blocks 743 on the lower side, the top of the support ring 741 is connected with the inner arc top of the inner arc plate 801, and two ends of the buffer sliding column 746 are respectively in threaded connection with a limiting block 748.
The inner arc plate 801 is pressed downwards to press towards the support ring 741, at the moment, due to the instability of the diamond structure, the connecting rod 744 pushes the two sliding rings 747 to move towards the two ends of the buffering sliding column 746, at the moment, the three extension springs 749 in the middle of the buffering sliding column 746 are driven to extend, the three extension springs 749 provide buffering force, and the buffering force provided by the three extension springs 749 in the transverse direction is converted into vertical buffering.
It should be noted that the hydraulic telescopic rod 33 and the hydraulic cylinder 414 disclosed in the above embodiments can be freely selected by a person having ordinary skill according to actual situations, the hydraulic telescopic rod 33 and the hydraulic cylinder 414 are connected to an external hydraulic source through a hydraulic pipeline and a buffer solenoid valve, the external hydraulic source controls the extension and retraction of the hydraulic telescopic rod 33 and the hydraulic cylinder 414 through the hydraulic pipeline and the buffer solenoid valve by a method commonly used in the prior art, and other parts of the present invention that are not detailed are conventional technologies known by the person having ordinary skill in the art.
Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.
Claims (10)
1. An impact-resistant coal mine support frame, which is characterized in that: the device comprises a bottom rod (1), an inclined strut (2), an inclined strut angle adjusting unit (3), an inclined strut height adjusting unit (4), an ejector rod (5), a transverse buffer unit (6), a vertical buffer unit (7) and a top support unit (8);
the top of the bottom rod (1) is provided with two diagonal brace height adjusting units (4) through diagonal brace angle adjusting units (3), two sides of the bottom of the ejector rod (5) are respectively movably connected with the tops of the two diagonal braces (2) through hinged supports (9), the top of the ejector rod (5) is provided with a top supporting unit (8) through a transverse buffering unit (6), and a vertical buffering unit (7) is arranged between the inner side of the top supporting unit (8) and the transverse buffering unit (6);
the diagonal brace angle adjusting unit (3) comprises a strip-shaped groove (31), a first sliding block (32), a hydraulic telescopic rod (33) and an adjusting seat (34), the strip-shaped groove (31) is formed in the bottom rod (1), two ends of the strip-shaped groove (31) are respectively connected with the first sliding block (32) in a sliding mode, the first sliding block (3) is respectively fixed with a diagonal brace height adjusting unit (4), the two diagonal brace height adjusting units (4) are respectively provided with the adjusting seat (34), the two adjusting seats (34) are connected through the hydraulic telescopic rod (33), and the tops of the two adjusting seats (34) are respectively movably connected with the bottoms of the two diagonal braces (2).
2. An impact-resistant coal mine support frame as claimed in claim 1, wherein: the height adjusting unit (4) of the inclined strut comprises a U-shaped mounting frame (401), a screw rod (402), a sliding rod (403), a hexagonal block (404) and a movable block (405), the bottom of the U-shaped mounting frame (401) is fixed on the first sliding block (32), the inner side of the U-shaped mounting frame (401) is fixed with the vertical sliding rod (403), the inner side of the U-shaped mounting frame (401) is rotatably connected with the screw rod (402), the top of the screw rod (402) penetrates through the end portion of the U-shaped mounting frame (401) and is connected with the hexagonal block (404), the movable block (405) is provided with a screw hole and a sliding hole, the screw hole in the movable block (405) is in threaded connection with the screw rod (402), the sliding hole in the movable block (405) is in sliding connection with the sliding rod (403), and the side face of the movable block (405) is fixed with an adjusting seat (.
3. An impact-resistant coal mine support frame as claimed in claim 1, wherein: the height adjusting unit (4) of the inclined strut comprises a U-shaped frame (411), a vertical groove (412), a vertical sliding block (413), a hydraulic cylinder (414) and a movable block II (415), the bottom of the U-shaped frame (411) is fixed on the sliding block I (32), the vertical groove (412) is formed in the inner side of the U-shaped frame (411), the bottom end of the hydraulic cylinder (414) is fixedly connected to the bottom of the inner side of the U-shaped frame (411), the movable block II (415) is fixed to the top end of the hydraulic cylinder (414), the vertical sliding block (413) is fixed to the side face of the movable block II (415), the vertical sliding block (413) is connected with the vertical groove (412) in a sliding mode, and an adjusting seat (34) is fixed to the side face of the movable block II (415.
4. An impact-resistant coal mine support frame as claimed in claim 1, wherein: the transverse buffer unit (6) comprises a guide rod (61), a first long spring (62), a second sliding block (63), a short spring (64), a separating block (65) and a sliding groove (66), wherein the sliding groove (66) is formed in the ejector rod (5), the separating block (65) is fixed in the middle of the sliding groove (66) so as to separate the sliding groove (66) into two separating grooves, guide rods (61) are respectively arranged in the two separating grooves of the sliding groove (66), the middle parts of the two guide rods (61) respectively penetrate through side sliding holes of the two sliding blocks (63), the sliding blocks (63) are in sliding connection with the separating grooves, the first long spring (62) is sleeved at one end, close to the separating block (65), of the guide rod (61), and the short spring (64) is sleeved at one end, far away from the separating block (65), of the guide rod (61).
5. An impact-resistant coal mine support frame as claimed in claim 4, wherein: top supporting unit (8) include inner arc board (801), stiffener (802), stiffener two (803), outer arc board (804) and reinforcing bar (805), the both ends of inner arc board (801) respectively with two slider two (63) fixed connection, and the outside of outer arc board (804) is connected through the V-arrangement pole in the outside of inner arc board (801), and is equipped with reinforcing bar (805) that improve plastic deformation intensity in the both sides arc wall of inner arc board (801), the V-arrangement pole comprises stiffener one (802), stiffener two (803).
6. An impact-resistant coal mine support frame as claimed in claim 5, wherein: vertical buffer unit (7) include pivot (701), activity down tube (702), loose axle (703), telescopic link (704), extension spring (705) and arc kicking block (706), there are two activity down tube (702) that are the V-arrangement and distribute at the top of separation piece (65) through pivot (701) swing joint, and the top of two activity down tube (702) is fixed with arc kicking block (706) respectively, the inboard contact of arc kicking block (706) and inner arc board (801), the both ends of loose axle (703) swing joint telescopic link (704) are passed through to the middle part of two activity down tube (702), extension spring (705) have been cup jointed on telescopic link (704), and the middle part of fixed connection respectively at the middle part of activity down tube (702) at the both ends of extension spring (705).
7. An impact-resistant coal mine support frame as claimed in claim 5, wherein: the vertical buffer unit (7) comprises a mounting plate (711), a support block (712), vertical rods (713), mounting columns (714), side supporting seats (715), transverse rods (716), a central block (717), movable connecting seats (718), a barrel (719), an end block (720), movable struts (721), two extension springs (722) and a middle spring (723), the mounting plate (711) is fixed at the top of the separation block (65), two ends of the top of the mounting plate (711) are respectively movably connected with the bottom ends of the two vertical rods (713) through the support block (712), the inner sides of the top ends of the two vertical rods (713) are respectively and movably connected with the side supporting seats (715), the side surfaces of the two side supporting seats (715) are respectively and fixedly connected with one end of the two transverse rods (716), the other ends of the two transverse rods (716) are oppositely arranged and respectively connected with the movable connecting seats (718), the two movable connecting seats (718) are respectively and movably connected with the, the top of center block (717) is connected with movable support column (721), the bottom round hole of barrel (719) and connection end block (720) are passed at the top of movable support column (721), the part that movable support column (721) are located barrel (719) has cup jointed extension spring two (722), the both ends of extension spring two (722) are the inboard bottom of fixed connection end block (720) and barrel (719) respectively, the inboard arc top of the inside arc board (801) of top fixed connection of barrel (719), the inboard middle part of two montants (713) is fixed with erection column (714) respectively, the both ends of middle part spring (723) are fixed connection erection column (714) respectively.
8. An impact-resistant coal mine support frame as claimed in claim 5, wherein: the vertical buffer unit (7) comprises a support ring (741), a support block (742), triangular blocks (743), connecting rods (744), side plates (745), buffer sliding columns (746), sliding rings (747), a limiting block (748) and a third extension spring (749), the third extension spring (749) is sleeved in the middle of the buffer sliding columns (746), two ends of the third extension spring (749) are respectively and fixedly connected with the sliding rings (747), the two sliding rings (747) are respectively and slidably connected with the buffer sliding columns (746), the upper side and the lower side of each sliding ring (747) are respectively and fixedly provided with the side plates (745), each side plate (745) is respectively and movably connected with one end of a connecting rod (744), the other ends of the two connecting rods (744) on the upper side are movably connected with the triangular blocks (743) on the upper side, the other ends of the two connecting rods (744) on the lower side are movably connected with the triangular blocks (743) on the lower side, the top of the separation block (65) is fixedly connected with a triangular block (743) on the lower side, the triangular block (743) on the upper side is fixedly connected with an oval supporting ring (741), a supporting block (742) is fixed on the inner side of the supporting ring (741), the top of the supporting ring (741) is connected with the inner arc top of the inner arc plate (801), and two ends of the buffering sliding column (746) are respectively in threaded connection with a limiting block (748).
9. An impact-resistant coal mine support frame as claimed in claim 1, wherein: still include bottom fixed unit (10), bottom fixed unit (10) include fixed plate (101), fixed inserted bar (102) and fixed head (103), the both ends bottom of sill bar (1) is fixed with fixed plate (101) of perpendicular to sill bar (1) respectively, fixed inserted bar (102) have been alternate respectively in the both ends round hole of fixed plate (101), the top of fixed inserted bar (102) is fixed with fixed head (103).
10. An impact-resistant coal mine support frame as claimed in any one of claims 1 to 9 in a method of use, wherein: comprises the following steps;
the method comprises the following steps: bottom fixing, namely integrally placing the support frame in a coal mine hole, and then fixing the position of the bottom of the support frame through a bottom fixing unit (10);
step two: adjusting the height, namely adjusting the height of the diagonal brace (2) by using a diagonal brace height adjusting unit (4) to enable a top supporting unit (8) at the top of the supporting frame to contact the top of the coal mine hole;
step three: the contact strength is improved, the distance between the two diagonal brace height adjusting units (4) is reduced through the diagonal brace angle adjusting unit (3), so that the angles of the two diagonal braces (2) are reduced, the height of the ejector rod (5) is further improved, and the supporting force of the top supporting unit (8) is improved;
step four: impact strength is provided, horizontal and vertical cushioning is provided by using the horizontal cushioning unit (6) and the vertical cushioning unit (7), respectively, and the top supporting unit (8) can generate plastic deformation to provide an impact-proof effect.
Priority Applications (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210491672.1A CN114718613A (en) | 2020-11-13 | 2020-11-13 | Using method of coal mine supporting frame |
| CN202210491645.4A CN114718612A (en) | 2020-11-13 | 2020-11-13 | Coal mine supporting frame |
| CN202011267145.XA CN112392527B (en) | 2020-11-13 | 2020-11-13 | Anti-impact coal mine supporting frame and using method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011267145.XA CN112392527B (en) | 2020-11-13 | 2020-11-13 | Anti-impact coal mine supporting frame and using method |
Related Child Applications (2)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202210491645.4A Division CN114718612A (en) | 2020-11-13 | 2020-11-13 | Coal mine supporting frame |
| CN202210491672.1A Division CN114718613A (en) | 2020-11-13 | 2020-11-13 | Using method of coal mine supporting frame |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN112392527A true CN112392527A (en) | 2021-02-23 |
| CN112392527B CN112392527B (en) | 2022-08-16 |
Family
ID=74600188
Family Applications (3)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202210491672.1A Withdrawn CN114718613A (en) | 2020-11-13 | 2020-11-13 | Using method of coal mine supporting frame |
| CN202011267145.XA Expired - Fee Related CN112392527B (en) | 2020-11-13 | 2020-11-13 | Anti-impact coal mine supporting frame and using method |
| CN202210491645.4A Withdrawn CN114718612A (en) | 2020-11-13 | 2020-11-13 | Coal mine supporting frame |
Family Applications Before (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202210491672.1A Withdrawn CN114718613A (en) | 2020-11-13 | 2020-11-13 | Using method of coal mine supporting frame |
Family Applications After (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202210491645.4A Withdrawn CN114718612A (en) | 2020-11-13 | 2020-11-13 | Coal mine supporting frame |
Country Status (1)
| Country | Link |
|---|---|
| CN (3) | CN114718613A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113756853A (en) * | 2021-07-31 | 2021-12-07 | 山东省煤田地质规划勘察研究院 | Deep well soft rock stratum rock burst protector |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE2644999A1 (en) * | 1976-10-06 | 1978-04-13 | Gewerk Eisenhuette Westfalia | Powered mine shield guide linkage - has guide pins in socket guides with spring loading to serve both skids forming split shield floor base |
| CN209308718U (en) * | 2019-01-05 | 2019-08-27 | 亢燕卿 | A kind of supporting coal mine underworkings device |
| CN111022091A (en) * | 2019-12-05 | 2020-04-17 | 中铁隧道集团三处有限公司 | Multi-angle supporting rod for tunnel preliminary bracing |
| CN210919095U (en) * | 2019-09-11 | 2020-07-03 | 孙磊 | Arched shock-absorbing support frame structure for coal mine tunnel |
| CN210948746U (en) * | 2019-09-26 | 2020-07-07 | 天津吉达尔重型机械科技有限公司 | Mine roof supporting structure |
| CN211258660U (en) * | 2019-12-12 | 2020-08-14 | 张建国 | Strutting arrangement for coal mine operation |
| CN211422682U (en) * | 2020-01-13 | 2020-09-04 | 师占峰 | Mining tunneling shield support for coal mine |
-
2020
- 2020-11-13 CN CN202210491672.1A patent/CN114718613A/en not_active Withdrawn
- 2020-11-13 CN CN202011267145.XA patent/CN112392527B/en not_active Expired - Fee Related
- 2020-11-13 CN CN202210491645.4A patent/CN114718612A/en not_active Withdrawn
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE2644999A1 (en) * | 1976-10-06 | 1978-04-13 | Gewerk Eisenhuette Westfalia | Powered mine shield guide linkage - has guide pins in socket guides with spring loading to serve both skids forming split shield floor base |
| CN209308718U (en) * | 2019-01-05 | 2019-08-27 | 亢燕卿 | A kind of supporting coal mine underworkings device |
| CN210919095U (en) * | 2019-09-11 | 2020-07-03 | 孙磊 | Arched shock-absorbing support frame structure for coal mine tunnel |
| CN210948746U (en) * | 2019-09-26 | 2020-07-07 | 天津吉达尔重型机械科技有限公司 | Mine roof supporting structure |
| CN111022091A (en) * | 2019-12-05 | 2020-04-17 | 中铁隧道集团三处有限公司 | Multi-angle supporting rod for tunnel preliminary bracing |
| CN211258660U (en) * | 2019-12-12 | 2020-08-14 | 张建国 | Strutting arrangement for coal mine operation |
| CN211422682U (en) * | 2020-01-13 | 2020-09-04 | 师占峰 | Mining tunneling shield support for coal mine |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113756853A (en) * | 2021-07-31 | 2021-12-07 | 山东省煤田地质规划勘察研究院 | Deep well soft rock stratum rock burst protector |
Also Published As
| Publication number | Publication date |
|---|---|
| CN112392527B (en) | 2022-08-16 |
| CN114718613A (en) | 2022-07-08 |
| CN114718612A (en) | 2022-07-08 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN208122858U (en) | A kind of Tunnel Engineering fender bracket | |
| CN112392527B (en) | Anti-impact coal mine supporting frame and using method | |
| CN201262093Y (en) | Pre/post-positioned caving coal cap stand | |
| CN103758543A (en) | Temporary advanced support device | |
| CN106948851A (en) | A kind of alley hydraulic support | |
| CN213836357U (en) | Highway construction is with interception buffer structure of prevention massif rockfall | |
| CN112963169A (en) | Tunnel excavation large deformation strong support device | |
| CN212052288U (en) | Road and bridge damping support | |
| CN1170052C (en) | Top protecting support | |
| CN208996498U (en) | Damping arched door support frame | |
| CN207970458U (en) | A kind of landing gear structure of aviation helicopter model aeroplane | |
| CN208633859U (en) | A kind of Anti-knocking monomer hydraulic bracket | |
| CN207348601U (en) | A kind of mobile guardrail of bridge construction | |
| CN216381461U (en) | Adjustable supporting system for mine foundation pit | |
| CN210216463U (en) | Safe type side slope passive protection network | |
| CN217710292U (en) | Supporting and damping device for bridge | |
| CN210637096U (en) | Combine and adopt working face end dysmorphism supporting equipment | |
| CN205422757U (en) | Face -end support's back timber subassembly and face -end support | |
| CN214614109U (en) | Steel shotcrete oblique angle wood wedge base | |
| CN205533944U (en) | Shock -absorbing seat for mining machine | |
| CN111576908B (en) | Constructional engineering frame roof beam reinforcing apparatus | |
| CN213014341U (en) | Pile foundation reinforcing apparatus for road and bridge | |
| CN219865060U (en) | Roadway support structure | |
| CN220299235U (en) | Support frame for transporting wind power generation blade slurry | |
| CN212535653U (en) | Coal mining machine for coal mine |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| TA01 | Transfer of patent application right | ||
| TA01 | Transfer of patent application right |
Effective date of registration: 20220729 Address after: 719000 Da Chang Han Xiang Liu Jia Liang Cun, Fugu County, Yulin City, Shaanxi Province Applicant after: Fugu Yifeng Coal Mine Co.,Ltd. Address before: 261400 No.132 Dengjia village, Zhuqiao Town, Laizhou City, Yantai City, Shandong Province Applicant before: Yin Chunmin |
|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20220816 |