CN219888069U - Support device for preventing and controlling coal mine rock burst - Google Patents

Abstract

The utility model relates to the technical field of coal mining equipment, and discloses a bracket device for preventing and controlling rock burst of a coal mine. The quantity of bottom plate is two, all sets up supporting component on every bottom plate. The support assembly includes a crane. The roof-rack is fixed to be set up at the top of two crane. Two lifting driving components are arranged between the two supporting components and connected with the same side end parts of the two lifting frames so as to drive the two lifting frames to move up and down. The support device has the beneficial effects that the support system at the top of the mine channel is reinforced by a simple and reliable structure, so that disaster consequences caused by rock burst can be prevented and treated to a large extent, the height of the support device can be adaptively adjusted according to the distance between the top of the mine channel and the ground, and the application range is wider.

Description

Support device for preventing and controlling coal mine rock burst

Technical Field

The utility model relates to the technical field of coal mining equipment, in particular to a bracket device for preventing and controlling rock burst of a coal mine.

Background

Rock burst generally refers to rock burst. Rock burst refers to a phenomenon that a deep part of underground mining or an area with high structural stress is suddenly damaged in a temporary rock mass. The reason for this is that the strain energy accumulated in the rock mass in the sky is suddenly and yet violently released all the way, causing brittle fracture of the rock mass like an explosion. Along with the gradual development of coal resources in China, the exploitation depth of the coal resources gradually develops from shallow parts to deep parts, and the structural characteristics, deformation damage characteristics, energy release characteristics and engineering response characteristics of deep coal and rock mass are obviously different from those of the shallow parts, so that rock burst disasters are more easily induced, and underground serious damage and casualties are caused. As the mining depth increases, the stress in the coal body increases, and the possibility of rock burst is higher, so that a protective supporting frame is necessary in the coal mining process, and the rock burst is prevented from threatening the life health and safety of operators in the mine pit.

The utility model patent CN215566011U discloses a coal mine rock burst prevention and control supporting structure, which comprises a supporting substrate, wherein a limiting transverse plate is arranged at the top of the supporting substrate and is used for supporting the top of a coal mine tunnel. The bottoms of the two supporting vertical plates are fixedly connected with the supporting base plate respectively, and a movable supporting component is arranged between the two supporting vertical plates. The movable supporting component comprises a movable transverse frame and a supporting vertical frame. One side of the top of the supporting substrate is fixedly connected with a motor, and the output end of the motor is fixedly connected with a threaded vertical rod. The number of the movable transverse frames and the number of the supporting vertical frames are two, connecting lugs are fixedly connected between the two movable transverse frames, threaded holes are formed in the top surfaces of the connecting lugs, and threaded vertical rods penetrate through the threaded holes. Two movable crossbars are kept away from and are connected with the equal fixedly connected with movable horizontal pole of lug one end, and two support erects the frame and are located two movable horizontal pole tops and with movable horizontal pole fixed connection respectively. The top of the supporting vertical frame is fixedly connected with the limiting transverse plate. The structure of the movable supporting component, the structure of the limiting buffer component and the connecting structure between the movable cross rod and the supporting vertical plate in the supporting structure are very complex, and in the process of upward movement of the sliding lug, the force from the limiting cross plate is transmitted to the limiting buffer component and the motor through the supporting vertical frame, the movable cross rod, the movable cross frame and the connecting lug in sequence, so that the motor is easy to damage, the two supporting vertical plates do not share the force from the limiting cross plate, and the force is finally born by the limiting spring in the limiting buffer component, so that the supporting performance of the whole supporting structure is not stable enough.

The utility model patent CN114233354U discloses a rock burst protection device for a coal mine, which comprises a positioning assembly, a protection assembly and a stretching assembly, wherein the protection assembly is arranged above the positioning assembly, and the height of the protection assembly is adjusted through the positioning assembly. The positioning assembly comprises an upright post fixedly connected with the bottom end surface of the supporting table, a bottom rod fixedly connected with the upper surface of the bottom plate, and an adjusting plate and an adjusting block which are mutually connected in a sliding manner. A plurality of tooth grooves are distributed on the outer wall of the adjusting plate in a vertical array mode. The regulating block is equipped with the stopper of a pair of L shape structure towards protruding on the face of regulating plate, stopper and regulating plate block, and stopper and the laminating of the both sides wall of regulating block. The surface of the adjusting block facing the adjusting plate is also provided with a first fluted disc which is meshed with the adjusting plate. The first motor is started, the first motor drives the second fluted disc to rotate, the second fluted disc drives the first fluted disc to rotate, and then the meshing of the first fluted disc and the regulating plate drives the regulating block to rise to the height, and the upper part of the regulating block rises to the height with the protection plate through the arrangement of the bottom plate and the supporting table. The total weight of the protection component, the stretching component, the first motor, the rotating rod, the first fluted disc, the second fluted disc, the limiting block and the regulating block in the protection device is only transmitted to the two movable plates through the meshing of the vertical tooth grooves and the first fluted disc, and obviously, the support performance of the whole protection device is not stable enough. In addition, the protection device involves the engagement of the vertical tooth slot with the first tooth disc and the engagement of the first tooth disc with the second tooth disc, which not only results in a complex structure of the device, but also makes the installation and maintenance time and labor consuming.

Disclosure of Invention

First, the technical problem to be solved

In view of the above-mentioned shortcomings and disadvantages of the prior art, the utility model provides a bracket device for preventing and controlling rock burst of a coal mine, which solves the technical problems of complex structure and insufficient stability of support of the existing protective bracket.

(II) technical scheme

In order to achieve the above purpose, the main technical scheme adopted by the utility model comprises the following steps:

in a first aspect, the utility model provides a bracket device for preventing and controlling rock burst of a coal mine, which comprises a bottom plate, a supporting component, a top frame and a lifting driving component; the device is characterized in that the number of the bottom plates is two, and each bottom plate is provided with the supporting component; the support assembly comprises a lifting frame; the top frames are fixedly arranged at the tops of the two lifting frames; two lifting driving assemblies are arranged between the two supporting assemblies and connected with the same side end parts of the two lifting frames so as to drive the two lifting frames to move up and down.

Optionally, the support assembly further comprises a first strut and a second strut; the first support column and the second support column are respectively arranged on two opposite sides of the bottom plate, and the bottom of the first support column is fixedly connected with the upper surface of the bottom plate; the lifting frame is arranged at the top parts of the first support column and the second support column and is in sliding connection with the first support column and the second support column.

Optionally, the lifting driving assembly comprises a bidirectional screw rod, a fixed rod and two supporting rods; the two-way screw rod is arranged in parallel with the fixed rod, and the two support rods are arranged between the two-way screw rod and the fixed rod in a crossing way; the upper ends of the two support rods are rotatably connected with the fixed rod, and the lower ends of the two support rods can be close to or far away from each other along the bidirectional screw rod and can rotate in a vertical plane relative to the bidirectional screw rod; in one of the lifting driving assemblies, two ends of the bidirectional screw are respectively and rotatably connected with the two first support posts, and two ends of the fixed rod are respectively and fixedly connected with the two lifting frames near the end parts of the first support posts; in another lifting driving assembly, two ends of the bidirectional screw rod are respectively and rotatably connected with the two second support posts, and two ends of the fixed rod are respectively and fixedly connected with two ends of the lifting frame, which are close to the second support posts.

Optionally, the lifting driving assembly further comprises a motor; the output end of the motor is fixedly connected with one end of the bidirectional screw rod.

Optionally, the bidirectional screw comprises two thread sections with opposite rotation directions, each thread section is sleeved with a moving block, and the two moving blocks are symmetrically arranged in the length direction of the bidirectional screw; the fixed rod is symmetrically provided with two fixed blocks along the length direction; the upper surface of the moving block and the lower surface of the fixed block are both provided with grooves for accommodating the end parts of the supporting rods, and the end parts of the supporting rods are hinged with the corresponding moving block or the fixed block through pin shafts.

Optionally, the thickness of the middle section of the support rod is smaller than the thickness of the end sections.

Optionally, the top of the first pillar and the top of the second pillar are provided with accommodating holes; the two ends of the lifting frame are provided with downward extending plug-in parts which are inserted into the corresponding containing holes and can move up and down in the containing holes; the two ends of the fixing rod are fixedly connected with the plug-in connection parts of the two lifting frames, which are positioned at the same side end parts.

Optionally, a sliding guide structure is arranged between the hole wall of the accommodating hole and the plug-in part.

Optionally, the top frame comprises a plurality of guard bars arranged at intervals from each other.

Optionally, the bracket device further comprises a fixing component; the fixing component comprises a jack which is arranged on the bottom plate in a penetrating mode and an anchor which is inserted into the jack and fixed with the ground.

(III) beneficial effects

The beneficial effects of the utility model are as follows:

1. according to the bracket device for preventing and controlling the rock burst of the coal mine, the supporting components are respectively arranged on the two bottom plates, the two lifting driving components are arranged between the two supporting components, the lifting driving components are connected with the same side end parts of the lifting frames in the two supporting components, and the top frames are fixedly arranged at the tops of the two lifting frames, so that the lifting driving components can drive the top frames to move up and down through the lifting frames, the overall height of the bracket device can be adaptively adjusted according to the distance between the top of a mine channel and the ground, and the application range is wider.

2. According to the utility model, by controlling the rotation direction of the motor, the two support rods which are arranged in a crossing way can be close to or far away from each other in the length direction of the bidirectional screw rod, so that the two support rods drive the fixed rod, the lifting frame and the top frame to move up and down, and the top frame can support the top of a mine tunnel. Meanwhile, the lifting driving assembly is arranged between the two supporting assemblies, and the two-way screw rod, the two supporting rods and the fixing rod in the lifting driving assembly can further support the top frame, so that the supporting system at the top of the mine channel is reinforced by a simple and reliable structure, and disaster results caused by rock burst can be prevented and controlled to a greater extent.

3. Compared with the flat plate-shaped protective frame in the prior art, the top frame comprises a plurality of protective strips which are arranged at intervals, so that the weight of a part which performs lifting movement in the bracket device is reduced as much as possible while the protective effect is ensured, and the support stability of the bracket device is improved.

4. The lifting driving assembly is connected with the same side end parts of the lifting frames in the two supporting assemblies, so that the structural stability of the bracket device in the length direction of the top frame is improved, the top frame is more stable in the up-and-down movement process, and the whole bracket device is more stable in supporting the top frame.

Drawings

FIG. 1 is a schematic diagram of the overall structure of a bracket device for preventing and controlling coal mine rock burst;

FIG. 2 is a schematic diagram illustrating the connection of the support assembly and the base plate in FIG. 1;

fig. 3 is a schematic view of a part of the structure of the lifting driving assembly in fig. 1.

[ reference numerals description ]

1: a bottom plate; 2: a top frame; 3: a lifting frame; 4: a plug-in part; 5: a bidirectional screw; 6: a moving block; 7: a motor; 8: a support rod; 9: a fixed rod; 10: a fixed block; 11: a first support column; 12: a second support; 13: an accommodation hole; 14: a jack; 15: anchoring nails; 16: and a limiting ring.

Detailed Description

The utility model will be better explained by the following detailed description of the embodiments with reference to the drawings. Wherein references herein to "upper", "lower", etc. are made to the orientation of fig. 1.

In order that the above-described aspects may be better understood, exemplary embodiments of the present utility model will be described in more detail below with reference to the accompanying drawings. While exemplary embodiments of the present utility model are shown in the drawings, it should be understood that the present utility model may be embodied in various forms and should not be limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete, and will fully convey the scope of the utility model to those skilled in the art.

Referring to fig. 1-3, the utility model provides a bracket device for preventing and controlling rock burst of a coal mine, which comprises a bottom plate 1, a supporting component, a top frame 2 and a lifting driving component. The number of the bottom plates 1 is two, the two bottom plates 1 are arranged at intervals, and the interval between the two bottom plates 1 can be determined according to the length of the top frame 2. Each base plate 1 is provided with a support assembly. The top frame 2 is fixedly arranged at the top of the two supporting components. The two lifting driving components are arranged between the two supporting components, so that the supporting components drive the top frame 2 to move up and down, and the overall height of the support device is adjusted, so that the height of the support device can be adjusted adaptively according to the distance between the top of a mine tunnel and the ground, and the application range is wider.

The support assembly comprises a first leg 11, a second leg 12 and a lifting frame 3. The first support 11 and the second support 12 are respectively arranged on two opposite sides of the bottom plate 1, and the bottoms of the first support 11 and the second support 12 are fixedly connected with the upper surface of the bottom plate 1. The lifting frame 3 is provided on top of the first and second struts 11 and 12 and is slidably connected to the first and second struts 11 and 12. More specifically, the top of each of the first and second struts 11 and 12 is provided with a receiving hole 13. The two ends of the lifting frame 3 are provided with downward extending plug-in parts 4, and the plug-in parts 4 are inserted into corresponding accommodating holes 13 and can move up and down in the accommodating holes 13. In order to make the sliding of the lifting frame 3 in the receiving hole 13 smoother, a sliding guide structure, such as a slider and guide groove assembly, which is common in the mechanical field, is preferably provided between the wall of the receiving hole 13 and the plug-in portion 4. The present utility model is not particularly limited to the sliding guide structure, and any structure capable of realizing the sliding guide function between the wall of the receiving hole 13 and the plugging portion 4 is within the scope of the present utility model.

The top frame 2 is fixedly arranged at the top of the two lifting frames 3. The top frame 2 in this embodiment includes a plurality of guard bars arranged at intervals from each other to reduce the weight of the portion of the rack device that moves up and down while securing the guard effect as much as possible, thereby increasing the support stability of the rack device. Two lifting driving components are arranged between the two supporting components and are connected with the same side end parts of the two lifting frames 3 so as to drive the two lifting frames 3 to move up and down, thereby driving the top frame 2 to move up and down and realizing the adjustment of the overall height of the bracket device. The support device in this embodiment is simple and reasonable in structure, convenient operation sets up two lift drive assemblies and two supporting components, and with the homonymy end connection of the crane in lift drive assembly and the two supporting components, has increased the ascending structural stability of support device in roof-rack length direction for the in-process that the roof-rack reciprocated is more steady, also makes whole support device more firm to the support of roof-rack.

The lifting driving assembly comprises a bidirectional screw 5, a fixed rod 9 and two supporting rods 8. The bidirectional screw 5 is arranged in parallel with the fixed rod 9 and is positioned in the same vertical plane. Specifically, in one of the lifting drive assemblies, two ends of the bidirectional screw 5 are respectively and rotatably connected with the two first struts 11, and two ends of the fixing rod 9 are respectively and fixedly connected with the plug-in parts 4 of the two lifting frames 3, which are close to the first struts 11. In the other lifting driving assembly, two ends of the bidirectional screw 5 are respectively and rotatably connected with the two second support posts 12, and two ends of the fixing rod 9 are respectively and fixedly connected with the plug-in connection parts 4 of the two lifting frames 3, which are close to the second support posts 12. The two support rods 8 are arranged between the bidirectional screw 5 and the fixed rod 9 in an X-shaped cross manner, the upper ends of the two support rods 8 are rotationally connected with the fixed rod 9, the lower ends of the two support rods 8 can be close to or far away from each other along the bidirectional screw 5, and the two support rods can rotate in a vertical plane relative to the bidirectional screw 5. In order to avoid interference of the two support rods 8 in the up-and-down process, the thickness of the middle section of the support rod 8 may be designed to be smaller than the thickness of the two end sections thereof.

More specifically, the bidirectional screw 5 includes two threaded sections with opposite rotation directions, each threaded section is sleeved with one moving block 6, and the two moving blocks 6 are symmetrically arranged in the length direction of the bidirectional screw 5. The fixing rod 9 is symmetrically provided with two fixing blocks 10 along its length direction. Grooves for accommodating the end parts of the support rods 8 are formed in the upper surface of the moving block 6 and the lower surface of the fixed block 10, and the end parts of the support rods 8 are hinged with the corresponding moving block 6 or fixed block 10 through pin shafts.

In this embodiment, lift drive assembly sets up between two supporting component, and two screw rods, two spinal branch vaulting poles and dead lever in the lift drive assembly can carry out further support to the roof-rack to simple reliable structure has strengthened the support system at ore deposit top, thereby can prevent and treat the disaster result that rock burst brought to a great extent.

The lifting drive assembly further comprises a motor 7. The output end of the motor 7 is fixedly connected with one end of the bidirectional screw rod 8. Specifically, the motor 7 is fixedly mounted on the outer surface of the first support 11 or the second support 12, and the output end of the motor 7 penetrates through the side wall of the first support 11 or the second support 12 and is fixedly mounted with one end of the bidirectional screw 5.

The bracket device of the embodiment further comprises a fixing component, wherein the fixing component is used for firmly installing the bracket device on the mine road ground. Specifically, the fixing assembly includes a plurality of insertion holes 14 penetrating through the base plate 1, and anchors 15 for being inserted into the insertion holes 14 and fixed to the ground. A limiting ring 16 is fixedly arranged at the top end of the anchor 15.

The working process of the bracket device for preventing and controlling the rock burst of the coal mine is as follows: when the support device is used, constructors move the support device into a mine channel to be supported, two bottom plates 1 are stably placed on the ground, the anchor nails 15 are nailed into the ground by using knocking tools, and the support device can be integrally fixed, so that the support device is convenient to install. At this time, the two motors 7 are simultaneously started, so that the two motors 7 simultaneously drive the two bidirectional screws 5 to rotate. Because two screw thread sections on the bidirectional screw rod 5 rotate to the opposite directions, when the bidirectional screw rod 5 rotates positively, the two moving blocks 6 are close to each other, the two moving blocks 6 drive the lower ends of the two supporting rods 8 to be close to each other, and simultaneously the two supporting rods 8 rotate in a vertical plane, so that the upper ends of the two supporting rods 8 generate upward thrust to the fixed rod 9, and the fixed rod 9 drives the lifting frame 3 and the top frame 2 to move upwards, so that the top frame 2 can support the top of a mine tunnel. When the bidirectional screw 5 reversely rotates, the two moving blocks 6 are far away from each other, the upper ends of the two supporting rods 8 generate downward pulling force on the fixed rods 9, and the fixed rods 9 drive the lifting frame 3 and the top frame 2 to move downwards, so that the top frame 2 can return to the initial position. The support device is convenient to operate, the support system at the top of the mine channel is reinforced by a simple and reliable structure, so that disaster consequences caused by rock burst can be prevented and treated to a large extent, the height of the support device can be adaptively adjusted according to the distance between the top of the mine channel and the ground, and the application range is wider.

In the description of the present utility model, it should be understood that 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 number of technical features indicated. Thus, a feature defining "a first" or "a second" may explicitly or implicitly include one or more such feature. In the description of the present utility model, the meaning of "a plurality" is two or more, unless explicitly defined otherwise.

In the present utility model, unless explicitly specified and limited otherwise, the terms "mounted," "connected," "secured," and the like are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally formed; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium; may be a communication between two elements or an interaction between two elements. The specific meaning of the above terms in the present utility model can be understood by those of ordinary skill in the art according to the specific circumstances.

In the present utility model, unless expressly stated or limited otherwise, a first feature is "on" or "under" a second feature, which may be in direct contact with the first and second features, or in indirect contact with the first and second features via an intervening medium. Moreover, a first feature "above," "over" and "on" a second feature may be a first feature directly above or obliquely above the second feature, or simply indicate that the first feature is higher in level than the second feature. The first feature being "under", "below" and "beneath" the second feature may be the first feature being directly under or obliquely below the second feature, or simply indicating that the first feature is level lower than the second feature.

In the description of the present specification, the terms "one embodiment," "some embodiments," "examples," "particular examples," or "some examples," etc., refer to particular features, structures, materials, or characteristics described in connection with the embodiment or example as being included in at least one embodiment or example of the present utility model. In this specification, schematic representations of the above terms are not necessarily directed to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples. Furthermore, the different embodiments or examples described in this specification and the features of the different embodiments or examples may be combined and combined by those skilled in the art without contradiction.

While embodiments of the present utility model have been shown and described above, it will be understood that the above embodiments are illustrative and not to be construed as limiting the utility model, and that alterations, modifications, substitutions and variations may be made in the above embodiments by those skilled in the art within the scope of the utility model.

Claims (10)

1. A bracket device for preventing and controlling coal mine rock burst comprises a bottom plate, a supporting component, a top frame and a lifting driving component; the device is characterized in that the number of the bottom plates is two, and each bottom plate is provided with the supporting component; the support assembly comprises a lifting frame; the top frames are fixedly arranged at the tops of the two lifting frames; two lifting driving assemblies are arranged between the two supporting assemblies and connected with the same side end parts of the two lifting frames so as to drive the two lifting frames to move up and down.

2. A support device for coal mine rock burst control as claimed in claim 1, wherein: the support assembly further includes a first leg and a second leg; the first support column and the second support column are respectively arranged on two opposite sides of the bottom plate, and the bottom of the first support column is fixedly connected with the upper surface of the bottom plate; the lifting frame is arranged at the top parts of the first support column and the second support column and is in sliding connection with the first support column and the second support column.

3. A support device for coal mine rock burst control as claimed in claim 2, wherein: the lifting driving assembly comprises a bidirectional screw rod, a fixed rod and two supporting rods; the two-way screw rod is arranged in parallel with the fixed rod, and the two support rods are arranged between the two-way screw rod and the fixed rod in a crossing way; the upper ends of the two support rods are rotatably connected with the fixed rod, and the lower ends of the two support rods can be close to or far away from each other along the bidirectional screw rod and can rotate in a vertical plane relative to the bidirectional screw rod; in one of the lifting driving assemblies, two ends of the bidirectional screw are respectively and rotatably connected with the two first support posts, and two ends of the fixed rod are respectively and fixedly connected with the two lifting frames near the end parts of the first support posts; in another lifting driving assembly, two ends of the bidirectional screw rod are respectively and rotatably connected with the two second support posts, and two ends of the fixed rod are respectively and fixedly connected with two ends of the lifting frame, which are close to the second support posts.

4. A support device for coal mine rock burst control as claimed in claim 3, wherein: the lifting driving assembly further comprises a motor; the output end of the motor is fixedly connected with one end of the bidirectional screw rod.

5. A support device for coal mine rock burst control as claimed in claim 3, wherein: the bidirectional screw comprises two thread sections with opposite rotation directions, each thread section is sleeved with a moving block, and the two moving blocks are symmetrically arranged in the length direction of the bidirectional screw; the fixed rod is symmetrically provided with two fixed blocks along the length direction; the upper surface of the moving block and the lower surface of the fixed block are both provided with grooves for accommodating the end parts of the supporting rods, and the end parts of the supporting rods are hinged with the corresponding moving block or the fixed block through pin shafts.

6. A support device for coal mine rock burst control as claimed in claim 3, wherein: the thickness of the middle section of the supporting rod is smaller than that of the end part.

7. A support device for coal mine rock burst control as claimed in claim 3, wherein: the top parts of the first support column and the second support column are provided with accommodating holes; the two ends of the lifting frame are provided with downward extending plug-in parts which are inserted into the corresponding containing holes and can move up and down in the containing holes; the two ends of the fixing rod are fixedly connected with the plug-in connection parts of the two lifting frames, which are positioned at the same side end parts.

8. A support device for coal mine rock burst control as claimed in claim 7, wherein: a sliding guide structure is arranged between the hole wall of the accommodating hole and the plug-in part.

9. A support device for coal mine rock burst control as claimed in claim 1, wherein: the top frame includes a plurality of guard bars spaced apart from each other.

10. A support device for coal mine rock burst control as claimed in claim 1, wherein: the bracket device also comprises a fixing component; the fixing component comprises a jack which is arranged on the bottom plate in a penetrating mode and an anchor which is inserted into the jack and fixed with the ground.