Pipeline system suitable for filling of lower layer mining regeneration roof

Abstract

The utility model discloses a pipeline system suitable for lower layer mining regenerated roof filling, which is characterized in that a height control mechanism can adjust the height of a filling pipeline in the vertical direction through the extension and retraction of a hydraulic support column in combination with a first height steering ring and a second height steering ring, so that the stability of height adjustment is ensured; when the filling pipeline extends, the extension control mechanism is provided with a hanging buckle on the filling pipeline every time the filling pipeline moves by a certain distance, and the hanging buckle is fixed on an anchoring point by winding a steel wire rope around a pulley block, so that the filling pipeline is prevented from being bent or broken due to an overlong hanging distance, and the extension stability is kept; when the filling steering mechanism needs to steer during filling, the filling head can be driven to steer towards one side or the other side through synchronous extension or retraction of two air cylinders, so that the steering process of filling is realized; therefore, the extension direction is controllable, the height of the pipeline direction can be adjusted, the pipeline direction can be steered, and meanwhile workers can operate conveniently without entering a goaf.

Description

Technical Field

[0001] The utility model relates to a pipeline system suitable for filling of lower layer mining regeneration roof, belonging to the technical field of filling pipelines. Background Art

[0002] As one of the coal mining methods that can efficiently recover thick coal seam resources, lower layer mining has been widely used and promoted in my country. This coal mining process has the advantages of high resource recovery rate and high coal mining efficiency, but there are also some problems that need to be solved. One of the main problems is that the roof of the lower layer tunnel is often the area where the upper layer has been mined out. Due to the huge space left after the mining of the upper layer coal seam, coupled with complex geological conditions such as rock strata fragmentation and water seepage, the stability and safety of the roof of the lower layer tunnel are greatly reduced, which brings great risks to the excavation operation.

[0003] In order to improve this situation, before the excavation of the lower layered tunnel, it is necessary to fill the goaf of the upper layer. After the goaf is filled and solidified, it can not only provide reliable support for the roof of the lower layered tunnel, improve the roof conditions, and thus improve the safety and efficiency of excavation, but also effectively isolate the toxic and harmful gases remaining in the goaf to prevent them from spreading and polluting the excavation working face. However, the current mainstream filling pipeline system still has some shortcomings. Among them, the soft filling pipeline mainly based on high-pressure rubber hose has a certain flexibility and plasticity and can extend into the goaf, but due to the uncontrollable pipeline, the extension is often non-directional. The hard filling pipeline mainly based on steel pipe has controllable extension direction, but has the defect of being unable to turn. Both pipelines have their own shortcomings. In addition, the construction personnel cannot directly enter the goaf to control the pipeline, which restricts the quality and efficiency of the filling operation, resulting in many problems such as uneven filling and short filling distance in the regenerated roof of the lower layered tunnel.

[0004] Therefore, how to provide a new filling pipeline system that not only has controllable extension direction but also can adjust the height and turn the pipeline direction without the need for workers to enter the goaf is a technical problem that the utility model needs to solve. Summary of the invention

[0005] In view of the problems existing in the above-mentioned prior art, the utility model provides a pipeline system suitable for lower layer mining and regenerated roof filling, which not only has controllable extension direction, but also can adjust the height and turn the direction of the pipeline, and at the same time, the staff does not need to enter the goaf.

[0006] In order to achieve the above-mentioned purpose, the technical solution adopted by the utility model is: a pipeline system suitable for filling the regenerated roof in the lower layer mining, including a height control mechanism, an extension control mechanism and a filling steering mechanism;

[0007] The height control mechanism includes a hydraulic support, a first height steering ring and a first fixed frame, the hydraulic support is vertically fixed on a horizontal plane, the first fixed frame is fixedly installed on the extended end of the hydraulic support, the extended end can drive the first fixed frame to move up and down, the first height steering ring is symmetrically provided with a rotating shaft on both sides, the first height steering ring is installed on the first fixed frame through the rotating shaft, and the first height steering ring can rotate relative to the first fixed frame with the rotating shaft as the center;

[0008] The extension control mechanism includes a load-bearing bracket, a second height turning ring, a second fixed frame and a pulley block. The load-bearing bracket is placed vertically on a horizontal plane, the second fixed frame is fixedly installed in the middle of the load-bearing bracket, rotating shafts are symmetrically arranged on both sides of the second height turning ring, the second height turning ring is installed on the second fixed frame through the rotating shaft, the second height turning ring can rotate relative to the second fixed frame with the rotating shaft as the center, and the rotation direction of the second height turning ring is the same as that of the first height turning ring; the pulley is assembled on the top of the load-bearing bracket, the pulley block is composed of a plurality of independently rotating pulleys arranged side by side, and each pulley is equipped with a wire rope;

[0009] The filling steering mechanism includes a filling pipeline and a steering mechanism. The filling pipeline is a rigid pipeline, one end of which passes through the second height steering ring and the first height steering ring in sequence. A plurality of suspension buckles are installed on the filling pipeline, each of which is fixedly connected to one end of a steel wire rope, and the other end of the steel wire rope is fixedly connected to an anchor point to maintain the extension stability of the filling pipeline; the steering mechanism includes a filling head, a filling frame, a pressure control hose and two cylinders. The filling frame is fixedly installed at the other end of the filling pipeline, and the filling head is located in the middle of the filling frame. One end of the head is connected to the other end of the filling pipeline through a connecting hose, and the other end of the filling head is provided with a slurry outlet for grouting into the goaf; two connecting plates are fixedly installed on the side of the filling head, and the two connecting plates are respectively located on both sides of the filling head, and the two cylinders are respectively located on both sides of the filling head, and the tail ends of the cylinder barrels of the two cylinders are movably connected to the filling frame through hinges, and the ends of the piston rods of the two cylinders are respectively movably connected to the two connecting plates; the pressure control hose is respectively connected to the two cylinders, and is used to control the synchronous extension or retraction of the piston rods of the two cylinders;

[0010] When the filling pipeline and the filling head need to be adjusted in height in the vertical direction, the extended end of the hydraulic strut drives the first height steering ring and the second height steering ring to rotate synchronously, so that the filling pipeline and the filling head can be adjusted in height; when the filling head needs to be turned, the piston rods of the two cylinders are controlled to extend or retract synchronously, so that the filling head is driven by the two piston rods to turn to one side or the other.

[0011] Furthermore, a camera is installed next to the slurry outlet, which can take real-time images of the front of the slurry outlet and feed them back to the display screen through a signal line. Adding a camera can view the situation in front of the grouting port in real time, and adjust the height and steering of the filling head according to the situation.

[0012] Furthermore, the suspension buckle is an 8-shaped structure composed of a first mounting hole and a second mounting hole, wherein the first mounting hole is used for the filling pipeline to pass through and be tightened and fixed by bolts, and the second mounting hole is used for the signal line and the pressure control hose to pass through and be tightened and fixed by bolts. In this way, the filling pipeline, signal line and pressure control hose can be fixedly installed, which is convenient for stability during filling and extension.

[0013] Furthermore, the plurality of suspension buckles are installed on the filling pipeline at equal intervals, so as to better maintain the stability of the filling pipeline when it is extended.

[0014] Furthermore, the first height turning ring and the second height turning ring are both provided with a clamp, and when the filling pipeline is not extended, the filling pipeline is clamped and fixed relative to the first height turning ring and the second height turning ring respectively by the clamp. The clamp can keep the filling pipeline relatively fixed when it is not extended, and when it needs to be extended, the clamp is loosened to facilitate the extension of the filling pipeline.

[0015] Compared with the prior art, the utility model adopts a combination of a height control mechanism, an extension control mechanism and a filling steering mechanism, wherein the height control mechanism can adjust the height of the filling pipeline in the vertical direction through the extension and contraction of the hydraulic support, combined with the first height steering ring and the second height steering ring, and the second height steering ring is used as the rotation center fulcrum, and the filling pipeline is a rigid pipe, which ensures the stability of the height adjustment; when the filling pipeline is extended, the extension control mechanism is equipped with a suspension buckle on the filling pipeline for each movement of a certain distance, and the suspension buckle is connected to one end of the wire rope, and the other end of the wire rope is fixed on a stable anchor point after passing through one of the pulleys of the pulley group, so as to ensure that the filling pipeline will not bend or break due to the long suspension distance, and maintain the stability of the extension; when the filling needs to be turned, the filling steering mechanism can drive the filling head to turn to one side or the other side through the synchronous extension or retraction of two cylinders to realize the filling steering process; therefore, the utility model not only has controllable extension direction, but also can adjust and turn the pipeline direction in height, and at the same time, the staff can operate conveniently without entering the goaf. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0017] Figure 2 It is a structural schematic diagram of the extension control mechanism in the utility model;

[0018] Figure 3It is a structural schematic diagram of the height control mechanism in the utility model;

[0019] Figure 4 It is a schematic diagram of the structure of the filling head and two cylinders in the utility model;

[0020] Figure 5 It is a schematic diagram of the spraying direction of the filling head when the piston rods of the two cylinders in the utility model are extended;

[0021] Figure 6 It is a schematic diagram of the spraying direction of the filling head when the piston rods of the two cylinders are retracted in the utility model;

[0022] Figure 7 It is a schematic diagram of the layout of the camera in the utility model;

[0023] Figure 8 It is a structural schematic diagram of the suspension buckle in the utility model.

[0024] In the figure: 1-height control mechanism; 2-extension control mechanism; 3-filling steering mechanism; 101-hydraulic support; 102-first height steering ring; 201-load-bearing bracket; 202-second height steering ring; 203-pulley block; 301-filling pipeline; 302-suspension buckle; 302-1-first mounting hole; 302-2-second mounting hole; 303-steering mechanism; 303-1-filling frame; 303-21-piston rod; 303-22-cylinder; 303-3-filling head; 303-31-slurry outlet; 303-32-camera; 303-4-connecting hose; 303-5-hinge. DETAILED DESCRIPTION

[0025] The utility model will be further described below.

[0026] like Figure 1 As shown, the utility model comprises a height control mechanism 1, an extension control mechanism 2 and a filling steering mechanism 3;

[0027] like Figure 3 As shown, the height control mechanism 1 includes a hydraulic support 101, a first height steering ring 102 and a first fixed frame. The hydraulic support 101 is vertically fixed on a horizontal plane. The first fixed frame is fixedly installed at the extended end of the hydraulic support 101. The extended end can drive the first fixed frame to move up and down. The first height steering ring 102 is symmetrically provided with rotating shafts on both sides. The first height steering ring 102 is installed on the first fixed frame through the rotating shaft, and the first height steering ring 102 can rotate relative to the first fixed frame with the rotating shaft as the center.

[0028] like Figure 2As shown, the extension control mechanism 2 includes a load-bearing bracket 201, a second height turning ring 202, a second fixed frame and a pulley block 203. The load-bearing bracket 201 is placed vertically on a horizontal plane, the second fixed frame is fixedly installed in the middle of the load-bearing bracket 201, and rotating shafts are symmetrically arranged on both sides of the second height turning ring 202. The second height turning ring 202 is installed on the second fixed frame through the rotating shaft. The second height turning ring 202 can rotate relative to the second fixed frame with the rotating shaft as the center, and the rotation direction of the second height turning ring 202 is the same as the rotation direction of the first height turning ring 102; the pulley block 203 is installed on the top of the load-bearing bracket 201, and the pulley block 203 is composed of a plurality of independently rotating pulleys arranged side by side, and each pulley is equipped with a wire rope;

[0029] The filling steering mechanism 3 includes a filling pipeline 301 and a steering mechanism 303. The filling pipeline 301 is a rigid pipeline, one end of which passes through the second height steering ring 202 and the first height steering ring 102 in sequence. A plurality of suspension buckles 302 are installed on the filling pipeline 301. Each suspension buckle 302 is fixedly connected to one end of a steel wire rope, and the other end of the steel wire rope is fixedly connected to an anchor point. The plurality of suspension buckles 302 are installed at equal intervals on the filling pipeline 301, which can better maintain the stability of the filling pipeline 301 when it is extended. The steering mechanism 303 includes a filling head 303-3, a filling frame 303-1, a pressure control hose and two cylinders. The filling frame 303-1 is fixedly installed at the other end of the filling pipeline 301. The filling head 303-3 is located in the middle of the filling frame 303-1. One end of the filling head 303-3 is connected to the other end of the filling pipeline 301 through a connecting hose 303-4. The other end of the filling head 303-3 is provided with a slurry outlet 303-31 for grouting into the goaf; Figure 7 As shown, a camera 303-32 is installed next to the grout outlet 303-31. The camera 303-32 can take real-time images in front of the grout outlet 303-31 and feed them back to the display screen through a signal line. Adding the camera 303-32 can check the situation in front of the grouting port in real time, and adjust the height and steering of the filling head 303-3 according to the situation; Figure 4 As shown, two connecting plates are fixedly installed on the side of the filling head 303-3, and the two connecting plates are respectively located on both sides of the filling head 303-3. The two cylinders are respectively located on both sides of the filling head 303-3. The tail ends of the cylinder barrels 303-22 of the two cylinders are movably connected to the filling frame 303-1 through hinges, and the ends of the piston rods 303-21 of the two cylinders are respectively movably connected to the two connecting plates; the pressure control hoses are respectively connected to the two cylinders to control the piston rods 303-21 of the two cylinders to extend or retract synchronously, as shown in FIG. Figure 5 and 6 As shown;

[0030] When the filling pipeline 301 and the filling head 303-3 need to be adjusted in height in the vertical direction, the extended end of the hydraulic support 101 drives the first height steering ring 102 and the second height steering ring 202 to rotate synchronously, so that the filling pipeline 301 and the filling head 303-3 can be adjusted in height; when the filling head 303-3 needs to be turned, the piston rods 303-21 of the two cylinders are controlled to extend or retract synchronously, so that the filling head 303-3 is driven by the two piston rods 303-21 to turn to one side or the other.

[0031] As an improvement of the utility model, Figure 8 As shown, the suspension buckle 302 is an 8-shaped structure composed of a first mounting hole 302-1 and a second mounting hole 302-2, wherein the first mounting hole 302-1 is used to allow the filling pipeline 301 to pass through and be tightened and fixed by bolts, and the second mounting hole 302-2 is used to allow the signal line and the pressure control hose to pass through and be tightened and fixed by bolts. In this way, the filling pipeline 301, the signal line and the pressure control hose can all be fixedly installed, which is convenient for stability during filling and extension.

[0032] As another improvement of the utility model, the first height turning ring 102 and the second height turning ring 202 are both equipped with a clamp, and when the filling pipeline 301 is not extended, the clamp is used to clamp and fix the filling pipeline 301 to the first height turning ring 102 and the second height turning ring 202. The clamp can keep the filling pipeline 301 relatively fixed when it is not extended, and the clamp is loosened when it needs to be extended to facilitate the extension of the filling pipeline 301.

[0033] The hydraulic support 101, load-bearing support 201, pulley block 203, cameras 303-32, clamps and cylinders are all existing components and can be directly purchased in the market.

[0034] First, the utility model is placed outside the goaf to be filled, and then the filling pipeline 301 and the steering mechanism 303 are partially extended into the goaf. The camera 303-32 captures the image in front of the slurry outlet 303-31 and feeds it back to the display screen through the signal line. The staff determines the required grouting filling position according to the internal situation of the goaf displayed. After determination, the filling pipeline 301 is transported and extended into the goaf. During the extension process, in order to ensure that the filling pipeline 301 does not bend or break due to the long suspension distance, a suspension is installed on the filling pipeline 301 every time it moves a certain distance. The hook 302 is provided, and the suspension hook 302 is connected to one end of the steel wire rope. The other end of the steel wire rope is passed around one of the pulleys of the pulley block 203 and then fixed on a stable anchor point. The pulley block 203 and the steel wire rope can maintain the stability of the suspension of the filling pipeline 301 during the extension process. In the subsequent extension process, before the extension movement, each fixed steel wire rope is first removed from its respective anchor point, and then the filling pipeline 301 is extended. At this time, the length of each steel wire rope is increased by sliding the pulley block 203. When the extension position of this stage is reached, each steel wire rope is fixed on the anchor point respectively.

[0035] When the filling pipeline 301 and the filling head 303-3 need to be adjusted in height in the vertical direction, each fixed steel wire rope is removed from its respective anchor point, and the extended end of the hydraulic support 101 is controlled to be extended and retracted. At this time, the retractable end drives the first height steering ring 102 to move up and down, thereby driving one end of the filling pipeline 301 to move up and down, and the first height steering ring 102 can rotate relative to the extended end of the hydraulic support 101 during the up and down movement. The up and down movement of one end of the filling pipeline 301 drives the second height steering ring 202 to rotate synchronously, wherein the second height steering ring 202 acts as a rotation center fulcrum, so that the other end of the filling pipeline 301 and the filling head 303-3 move up and down for height adjustment. After completion, each steel wire rope is fixed to the anchor point respectively;

[0036] When the filling head 303-3 needs to be turned horizontally, the pressure control hose is connected to the air compressor and the vacuum pump through the three-way valve. According to the direction in which the filling head 303-3 needs to be turned, if the piston rod 303-21 needs to be extended synchronously, the air compressor is started to inject high-pressure gas into the pressure control hose, and then the high-pressure gas enters the two cylinders 303-22 to push the two piston rods 303-21 to be extended synchronously. At this time, the filling head 303-3 is driven by the two piston rods 303-21 to turn in the required direction, and the air supply is stopped and maintained when the required direction is reached; if the piston rods 303-21 need to be retracted synchronously, the vacuum pump is started to exhaust air into the pressure control hose, and then the gas is extracted from the two cylinders 303-22. At this time, the two piston rods 303-21 are retracted synchronously under the influence of the external atmospheric pressure. At this time, the filling head 303-3 is driven by the two piston rods 303-21 to turn in the required direction, and the air extraction is stopped and maintained when the required direction is reached; the turning of filling and grouting is achieved in this way.

[0037] The camera 303-32 takes real-time images during the extension process, so that the staff can adjust the steering and height, as well as determine the extension position, until the required filling position is reached; finally, the filling pipeline 301 is connected to the grouting pump, and grouting is injected into the filling pipeline 301. At this time, the slurry is sprayed from the slurry outlet 303-31 to the filling position through the filling pipeline 301 and the filling head 303-3, thereby realizing grouting filling of the goaf.

[0038] The above is only a preferred embodiment of the present invention. It should be pointed out that for ordinary technicians in this technical field, several improvements and modifications can be made without departing from the principle of the present invention. These improvements and modifications should also be regarded as the protection scope of the present invention.

Claims

1. A pipeline system suitable for filling the lower layer mining regeneration roof, characterized in that: It includes a height control mechanism, an extension control mechanism and a filling steering mechanism; The height control mechanism includes a hydraulic support, a first height steering ring and a first fixed frame, the hydraulic support is vertically fixed on a horizontal plane, the first fixed frame is fixedly installed on the extended end of the hydraulic support, the extended end can drive the first fixed frame to move up and down, the first height steering ring is symmetrically provided with a rotating shaft on both sides, the first height steering ring is installed on the first fixed frame through the rotating shaft, and the first height steering ring can rotate relative to the first fixed frame with the rotating shaft as the center; The extension control mechanism includes a load-bearing bracket, a second height turning ring, a second fixed frame and a pulley block. The load-bearing bracket is placed vertically on a horizontal plane, the second fixed frame is fixedly installed in the middle of the load-bearing bracket, rotating shafts are symmetrically arranged on both sides of the second height turning ring, the second height turning ring is installed on the second fixed frame through the rotating shaft, the second height turning ring can rotate relative to the second fixed frame with the rotating shaft as the center, and the rotation direction of the second height turning ring is the same as that of the first height turning ring; the pulley is assembled on the top of the load-bearing bracket, the pulley block is composed of a plurality of independently rotating pulleys arranged side by side, and each pulley is equipped with a wire rope; The filling steering mechanism includes a filling pipeline and a steering mechanism. The filling pipeline is a rigid pipeline, one end of which passes through the second height steering ring and the first height steering ring in sequence. A plurality of suspension buckles are installed on the filling pipeline, each of which is fixedly connected to one end of a steel wire rope, and the other end of the steel wire rope is fixedly connected to an anchor point to maintain the extension stability of the filling pipeline; the steering mechanism includes a filling head, a filling frame, a pressure control hose and two cylinders. The filling frame is fixedly installed at the other end of the filling pipeline, and the filling head is located in the middle of the filling frame. One end of the head is connected to the other end of the filling pipeline through a connecting hose, and the other end of the filling head is provided with a slurry outlet for grouting into the goaf; two connecting plates are fixedly installed on the side of the filling head, and the two connecting plates are respectively located on both sides of the filling head, and the two cylinders are respectively located on both sides of the filling head, and the tail ends of the cylinder barrels of the two cylinders are movably connected to the filling frame through hinges, and the ends of the piston rods of the two cylinders are respectively movably connected to the two connecting plates; the pressure control hose is respectively connected to the two cylinders, and is used to control the synchronous extension or retraction of the piston rods of the two cylinders; When the filling pipeline and the filling head need to be adjusted in height in the vertical direction, the extended end of the hydraulic strut drives the first height steering ring and the second height steering ring to rotate synchronously, so that the filling pipeline and the filling head can be adjusted in height; when the filling head needs to be turned, the piston rods of the two cylinders are controlled to extend or retract synchronously, so that the filling head is driven by the two piston rods to turn to one side or the other.

2. The pipeline system suitable for lower layer mining and regeneration roof filling according to claim 1 is characterized in that: A camera is installed next to the pulp outlet, and the camera can take real-time images in front of the pulp outlet and feed them back to the display screen through a signal line for display.

3. The pipeline system suitable for lower layer mining and regeneration roof filling according to claim 1 is characterized in that: The suspension buckle is an 8-shaped structure consisting of a first mounting hole and a second mounting hole, wherein the first mounting hole is used for the filling pipeline to pass through and be tightened and fixed by bolts, and the second mounting hole is used for the signal line and the pressure control hose to pass through and be tightened and fixed by bolts.

4. The pipeline system suitable for lower layer mining and regeneration roof filling according to claim 1 is characterized in that: The plurality of suspension buckles are installed on the filling pipeline at equal intervals.

5. The pipeline system suitable for lower layer mining and regeneration roof filling according to claim 1 is characterized in that: The first height turning ring and the second height turning ring are both provided with clamps, and when the filling pipeline is not extended, the filling pipeline is clamped and fixed relative to the first height turning ring and the second height turning ring respectively through the clamps.

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