Drilling rig stabilizing device for coal mine roadway support

Abstract

The present application relates to the technical field of drilling rig support, in particular to a coal mine roadway supporting drilling rig stabilizing device, which comprises a rotary table and a drilling device arranged on the top of the rotary table, a support assembly and a sliding assembly are arranged on one side of the jacking rod, and a movable assembly is arranged between the jacking rod and the sliding assembly; the sliding assembly comprises a group of movable balls which can slide under the pushing of the movable assembly, so that the force applied to the jacking rod by the drilling device during drilling is pressed to the movable balls in the direction of the telescopic rod through the connecting rod assembly, the movable balls are always in contact with the inclined surface, the telescopic rod is pushed to move upward and tightly contact with the top of the roadway; under the double stabilization of the hydraulic support leg and the hydraulic jacking rod, the stability of the drilling rig during drilling is further enhanced through the support assembly for auxiliary support, the force applied to the jacking rod during drilling is pressed to the movable balls through the cooperation of the sliding assembly and the movable assembly, the force is converted into the thrust of the movable balls to the support assembly, the telescopic rod is lifted by the movable balls, tightly contacts with the top of the roadway, and the stability of the drilling rig is enhanced.

Description

Technical Field

[0001] This invention relates to the field of drilling rig support technology, specifically a drilling rig stabilization device for coal mine roadway support. Background Technology

[0002] Coal mine drilling rigs are key mechanical equipment used for drilling operations in coal mining. They play an important role in coal mine exploration, ventilation, gas drainage, water injection, and other operations. Maintaining the stability of the drilling rig during drilling is crucial, as its stability directly affects the drilling quality, equipment lifespan, operational safety, and overall efficiency. Instability of the drilling rig can cause drill bit vibration or directional deviation, causing the drilling trajectory to deviate from the designed path. A stable drilling rig can reduce accidents such as drill bit jamming and breakage, and ensure the integrity and continuity of the borehole.

[0003] Currently, some existing drilling rigs rely on hydraulic outriggers at the bottom of the rig to press against the tunnel floor and hydraulic rods at the top of the rig to press against the tunnel ceiling to stabilize the rig. The drill bit is supported and adjusted by a hydraulic rod assembly. When the drill bit is drilling, it rotates and presses against the rock wall. The hydraulic jack is subjected to the reaction force generated during drilling, and the contact pressure between the hydraulic outriggers at the bottom of the rig and the tunnel floor may exceed the bearing capacity of the rock strata, causing the hydraulic outriggers at the bottom of the rig to sink. This may cause the entire drilling rig to sink slightly, loosening the connection between the top of the jack and the tunnel ceiling. As a result, the jack may tilt slightly during drilling, and continued use may affect the overall stability of the drilling rig.

[0004] Therefore, the present invention provides a drilling rig stabilization device for coal mine roadway support that utilizes the reaction force generated during drilling to enhance the stability of the drilling rig. Summary of the Invention

[0005] In view of the problem that the drilling rig may sink during drilling, thereby affecting the original stabilization device, the present invention provides a drilling rig stabilization device for coal mine roadway support.

[0006] The technical solution adopted by the present invention to solve its technical problem is: a drilling rig stabilization device for coal mine roadway support, including a turntable, a drilling tool device is provided on the top of the turntable, a hydraulic adjustment device for adjusting its height and angle is provided at the bottom of the drilling tool device, a set of retractable hydraulic jacks are fixedly installed on both sides of the top of the turntable, a support component and a sliding component are provided on one side of the jacks, and a movable component is provided between the jacks and the sliding component.

[0007] The movable component includes a linkage assembly that changes shape with the height of the drilling device and can automatically return to its original position when there is no external force. The support component includes a set of telescopic rods with an extended end that abuts against the top of the tunnel and a fixed end with an inclined surface at the bottom. The sliding component includes a set of movable balls that can slide under the push of the movable component. When the drilling device is drilling, the force applied to the top rod is squeezed by the linkage assembly towards the telescopic rod, so that the movable balls always abut against the inclined surface, pushing the telescopic rod to move upward and abut against the top of the tunnel.

[0008] Preferably, the support assembly further includes a fixed seat fixedly connected to the top of the turntable, a fixed tube fixedly connected to the top of the fixed seat, a telescopic rod located inside the fixed tube and slidably connected to the fixed tube, a through groove opened on the bottom of the fixed tube facing the drilling device, a set of first sliding grooves opened on the inner side of the fixed tube, a set of sliders opened on the outer side of the telescopic rod, and a second connecting plate ball-jointed on the top of the telescopic rod.

[0009] Preferably, the first slide groove is spirally arranged, and the slider is adapted to and slidably connected to the first slide groove.

[0010] Preferably, the sliding assembly further includes a guide groove on the top of the fixed seat, a push rod is fixedly connected to the side of the movable ball away from the inclined plane, a locking block is fixedly connected to the bottom of the push rod, and a second sliding groove is also provided on the top of the fixed seat, with the locking block slidably connected to the second sliding groove.

[0011] Preferably, the top of the fixed base, the bottom of the second slide groove, and the bottom of the guide groove are all inclined.

[0012] Preferably, the movable component further includes a fixed rod that is ball-jointed with the linkage assembly, a set of connecting members is rotatably connected to the linkage assembly, and a set of tension springs is fixedly connected between the two connecting members.

[0013] Preferably, the linkage assembly consists of a pair of first links and a pair of second links, and the whole is quadrilateral in shape. The connector is located between the first links and the second links. Both the first links and the second links are rotatably connected to the connector. The end of the first link away from the second link is connected to the fixed rod ball joint, and the end of the second link away from the first link is connected to the push rod ball joint.

[0014] Preferably, the fixed cylinder of the push rod is slidably connected to a movable collar, which is fixedly connected to the fixed rod.

[0015] Preferably, the bottom of the turntable is rotatably connected to a frame, and a set of hydraulic outriggers are fixedly installed at the bottom of the frame.

[0016] Preferably, the ball joint at the top of the push rod has a first connecting plate.

[0017] The beneficial effects of this invention are:

[0018] (1) The drilling rig stabilization device for coal mine roadway support described in this invention, under the dual stabilization of hydraulic outriggers and hydraulic jacks, further enhances the stability of the drilling rig during drilling through the support components used for auxiliary support. The force applied to the jacks during drilling is transformed into the thrust of the jacks on the support components by the cooperation of the sliding components and the movable components to squeeze the movable ball, so that the telescopic rod is lifted by the movable ball and pressed against the top of the roadway, thereby enhancing the stability of the drilling rig.

[0019] (2) The drilling rig stabilization device for coal mine roadway support described in this invention has an inclined setting of the guide groove and the second slide groove, which increases the included angle between the connecting rod assembly and the guide groove, making it easier for the push rod and the movable ball to be pushed by the connecting rod assembly.

[0020] (3) The drilling rig stabilization device for coal mine roadway support described in this invention has a tension spring that keeps the two points of the connecting rod assembly suspended in the air close together, so that the connecting rod assembly can generate a thrust on the push rod no matter how it is deformed, and pushes the movable ball to always press against the inclined surface at the bottom of the telescopic rod. Attached Figure Description

[0021] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0022] Figure 1 This is a schematic diagram of the overall structure of the present invention;

[0023] Figure 2 This is a schematic diagram showing the connection between the support component and the drilling tool provided by the present invention;

[0024] Figure 3 An exploded view of the connection between the support assembly and the top rod provided by the present invention;

[0025] Figure 4 A schematic diagram of the structure of the support component provided by the present invention;

[0026] Figure 5 for Figure 4 Enlarged view of point A;

[0027] Figure 6 This is an exploded view of the connection between the support component and the sliding component provided by the present invention;

[0028] Figure 7 This is a schematic diagram of the sliding component structure provided by the present invention;

[0029] Figure 8 This is a schematic diagram showing the connection between the sliding component and the moving component provided by the present invention;

[0030] Figure 9 This is a schematic diagram of the linkage assembly provided by the present invention;

[0031] Figure 10This is a schematic diagram showing the connection between the connector and the tension spring provided by the present invention.

[0032] In the diagram: 1. Frame; 2. Turntable; 3. Drilling tool assembly; 4. Hydraulic adjustment device; 5. Movable collar; 6. Hydraulic outrigger; 7. Top rod; 71. First connecting plate; 8. Support assembly; 81. Fixed seat; 82. Fixed pipe; 821. Through groove; 822. First slide groove; 83. Telescopic rod; 831. Slider; 84. Inclined surface; 85. Second connecting plate; 9. Sliding assembly; 91. Movable ball; 92. Push rod; 93. Second slide groove; 94. Guide groove; 95. Locking block; 10. Movable assembly; 101. Fixed rod; 102. Linkage assembly; 1021. First link; 1022. Second link; 103. Connector; 104. Tension spring. Detailed Implementation

[0033] To make the technical means, creative features, objectives and effects of this invention easier to understand, the invention will be further described below in conjunction with specific embodiments.

[0034] Example: Figures 1-10 As shown, the present invention discloses a drilling rig stabilization device for coal mine roadway support, used to provide stable support for the drilling tool device 3. It includes a turntable 2, with the drilling tool device 3 mounted on top of the turntable 2. A hydraulic adjustment device 4 for adjusting the height and angle of the drilling tool device 3 is mounted on the bottom of the turntable 2. A set of retractable hydraulic jacks 7 are fixedly installed on both sides of the top of the turntable 2. A support component 8 and a sliding component 9 are mounted on one side of each jack. A movable component 10 is provided between the jacks 7 and the sliding component 9. The movable component 10 includes components that change height according to the drilling tool device 3. The linkage assembly 102 is capable of automatically restoring its shape when there is no external force. The support assembly 8 includes a set of telescopic rods 83 with a telescopic end that abuts against the top of the tunnel when extended and a slope 84 provided at the bottom of the fixed end. The sliding assembly 9 includes a set of movable balls 91 that can slide under the push of the movable assembly 10. When the drilling device 3 is drilling, the force applied to the top rod 7 is squeezed by the linkage assembly 102 to move the movable balls 91 closer to the telescopic rods 83, so that the movable balls 91 always abut against the slope 84, pushing the telescopic rods 83 to move upward and abut against the top of the tunnel.

[0035] In this embodiment, the tunnel surface is first treated to ensure it is as flat as possible. The tracked drilling rig is then moved to a suitable position in the tunnel. The four hydraulic outriggers 6, two jacks 7, and the telescopic rod 83 are extended. The telescopic rod 83 is electrically or hydraulically controlled. The hydraulic outriggers 6 rest against the tunnel surface, while the jacks 7 and the telescopic rod 83 rest against the tunnel roof to maintain the stability of the drilling rig. The tension spring 104 needs to be inspected and replaced regularly. The control center at the tail of the drilling rig controls the turntable 2, the hydraulic adjustment device 4, the hydraulic outriggers 6, the jacks 7, and the telescopic rod 83. The drilling tool device 3 is... Before drilling, control the hydraulic adjustment device 4 and the rotary table 2 to adjust the height and angle of the drilling tool device 3 to the required position. At this time, the movable collar 5 slides on the outer wall of the top rod 7. When the drilling tool device 3 rotates and the top rod 7 tilts slightly, the tension spring 104 always pulls the connecting rod assembly 102, so that the end of the connecting rod assembly 102 opposite to the fixed rod 101 always presses against the push rod 92, thereby pushing the push rod 92 together with the movable ball 91 to press against the inclined surface 84 at the bottom of the telescopic rod 83, pushing the telescopic rod 83 upward, strengthening the tightness between the telescopic rod 83 and the top of the tunnel, making the drilling rig more stable.

[0036] Specifically, such as Figure 1 and Figure 2 As shown, the bottom of the turntable 2 is rotatably connected to the frame 1, and a set of hydraulic support legs 6 are fixedly installed at the bottom of the frame 1; the top of the top rod 7 has a ball joint with a first connecting plate 71.

[0037] In this embodiment, before drilling, the drilling rig is stabilized by hydraulic outriggers 6 and top rod 7. The drilling tool device 3 is supported by hydraulic adjustment device 4. During adjustment, the movable collar 5 slides on the fixed cylinder of the top rod 7. The force generated by the drilling tool device 3 during drilling and the weight of the drilling rig itself may cause the drilling rig to sink slightly, which will affect the tightness between the first connecting plate 71 at the top of the top rod 7 and the second connecting plate 85 at the top of the telescopic rod 83 and the tunnel top. Since the first connecting plate 71 and the top rod 7 and the second connecting plate 85 and the telescopic rod 83 are both ball joints, the first connecting plate 71 and the second connecting plate 85 will not completely separate from the tunnel top. During drilling, the ball joint will automatically adjust the connection between the two and the tunnel top, so as not to completely separate.

[0038] Specifically, such as Figures 3-10As shown, the support assembly 8 also includes a fixed base 81 fixedly connected to the top of the turntable 2. A fixed tube 82 is fixedly connected to the top of the fixed base 81. A telescopic rod 83 is located inside the fixed tube 82 and is slidably connected to the fixed tube 82. A through groove 821 is opened on the bottom of the fixed tube 82 facing the drilling device 3. A set of first sliding grooves 822 is opened on the inner side of the fixed tube 82. A set of sliders 831 is opened on the outer side of the telescopic rod 83. A second connecting plate 85 is ball-jointed on the top of the telescopic rod 83. The first sliding groove 822 is spirally arranged. The sliders 831 are adapted to the first sliding groove 822 and are slidably connected. The sliding assembly 9 also includes a guide groove 94 opened on the top of the fixed base 81. A push rod 92 is fixedly connected to the side of the movable ball 91 away from the inclined surface 84. A locking block 95 is fixedly connected to the bottom of the push rod 92. A second sliding groove 93 is also opened on the top of the fixed base 81. The locking block 95 is slidably connected to the second sliding groove 93. The top of the fixed base 81 The bottom of the second slide groove 93 and the bottom of the guide groove 94 are both inclined; the movable component 10 also includes a fixed rod 101 that is ball-jointed with the connecting rod assembly 102. A set of connecting members 103 are rotatably connected to the connecting rod assembly 102, and a set of tension springs 104 are fixedly connected between the two connecting members 103; the connecting rod assembly 102 consists of a pair of first connecting rods 1021 and a pair of second connecting rods 1022, and the whole is in a quadrilateral shape. The connecting member 103 is located between the first connecting rod 1021 and the second connecting rod 1022. The first connecting rod 1021 and the second connecting rod 1022 are both rotatably connected to the connecting member 103. The end of the first connecting rod 1021 away from the second connecting rod 1022 is ball-jointed with the fixed rod 101, and the end of the second connecting rod 1022 away from the first connecting rod 1021 is ball-jointed with the push rod 92; a movable collar 5 is slidably connected to the fixed cylinder of the push rod 7, and the movable collar 5 is fixedly connected to the fixed rod 101.

[0039] In this embodiment, when the movable collar 5 fitted on the top rod 7 pushes the top rod 7 towards the support assembly 8 during drilling, the quadrilateral structure formed by the connecting rod assembly 102 adapts to the height of the movable collar 5. One end of the two first connecting rods 1021 is ball-jointed with the fixed rod 101, and the other end is rotatably connected to the connecting member 103. One end of the two second connecting rods 1022 is rotatably connected with the connecting member 103, and the other end is ball-jointed with the push rod 92. The two connecting members 103 are located at the two suspended points of the quadrilateral. There is a certain distance between the horizontal positions of the fixed rod 101 and the push rod 92. From the side view of the drilling rig, it can be seen that the connecting rod assembly 102 is always in an inclined state. Under the action of the two connecting members 103 and the tension spring 104, the connecting rod assembly 102 is tilted. The two connecting parts 103 drive the two suspended points of the quadrilateral linkage assembly 102 to always be close to each other. The movable collar 5 is fixedly connected to the telescopic end of the vertical hydraulic rod of the hydraulic adjustment device 4. Its height position is controlled by the hydraulic adjustment device 4. After the hydraulic rod stops telescopic, its height position is fixed. Therefore, in conjunction with the movable assembly 10, the second connecting rod 1022 pushes the push rod 92 together with the movable ball 91 to squeeze the inclined surface 84 of the telescopic rod 83. The arc surface of the guide groove 94 is adapted to the movable ball 91. The guide groove 94 has a small inclination angle. When the movable ball 91 moves to squeeze the inclined surface 84, it can still push the telescopic rod 83 upward. When the telescopic rod 83 is pushed up, the slider 831 on its fixed end surface slides in the first sliding groove 822 on the inner wall of the fixed tube 82 to maintain the stability of the telescopic rod 83.

[0040] In this embodiment, as Figure 4 As shown, both the first groove 822 and the slider 831 are spirally arranged. Without affecting their limiting stability, the first groove 822 is dispersed. Compared with the circumferential groove, the weak points of the fixed tube 82 are more concentrated, forming a stress concentration zone. The spirally arranged first groove 822 disperses the weak points to various parts of the tube wall, avoiding stress concentration, and ensuring the stability of the telescopic rod 83 when it moves.

[0041] In this embodiment, as Figure 7 As shown, the top of the fixed seat 81, the second slide groove 93, and the bottom of the guide groove 94 are all inclined. The horizontal height of the fixed rod 101 is always higher than the horizontal height of the push rod 92. The inclined setting increases the angle between the connecting rod assembly 102 and the bottom of the guide groove 94, which is conducive to pushing the push rod 92 together with the movable ball 91 to move, lifting the telescopic rod 83 and pressing it against the top of the roadway. At the same time, the support assembly 8 can provide certain support for the top rod 7.

[0042] Working principle: During use, before drilling, the hydraulic outriggers 6, top rod 7, and telescopic rod 83 are extended. The hydraulic outriggers 6 abut against the roadway surface, and the first connecting plate 71 at the top of the top rod 7 and the second connecting plate 85 at the top of the telescopic rod 83 abut against the roadway top, thus fixing the drilling rig. The hydraulic adjustment device 4 and the rotary table 2 are controlled to determine the height and angle of the drilling tool device 3. The reaction force generated by the drilling tool device 3 during drilling is applied to the top rod 7. When the height of the drilling tool device 3 is adjusted, the four-sided connecting rod assembly 102 and the tension spring 104 have already made adaptive deformation according to the height of the movable collar 5. At the same time, the two connecting parts 103 are brought closer to each other under the action of the tension spring 104, so that the connecting rod assembly 102 always presses against the push rod 92, pushing the telescopic rod 83 upward, strengthening the tightness between the second connecting plate 85 at the top of the telescopic rod 83 and the roadway top, making the drilling rig more stable.

[0043] The foregoing has shown and described the basic principles, main features, and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of the invention. Various changes and modifications can be made to the invention without departing from its spirit and scope, and all such changes and modifications fall within the scope of protection claimed by the present invention. The scope of protection of the present invention is defined by the appended claims and their equivalents.

Claims

1. A drilling rig stabilization device for coal mine roadway support, comprising a rotary table, a drilling tool device mounted on the top of the rotary table, a hydraulic adjustment device for adjusting the height and angle of the drilling tool device mounted on the bottom of the drilling tool device, and a set of retractable hydraulic jacks fixedly installed on both sides of the top of the rotary table, characterized in that: A support component and a sliding component are provided on one side of the top rod, and a movable component is provided between the top rod and the sliding component; The movable component includes a linkage assembly that changes shape with the height of the drilling device and can automatically return to its original position when there is no external force. The support component includes a set of telescopic rods with an extended end that abuts against the top of the tunnel and a fixed end with an inclined surface at the bottom. The sliding component includes a set of movable balls that can slide under the push of the movable component. When the drilling device is drilling, the force applied to the top rod is squeezed by the linkage assembly towards the telescopic rod, so that the movable balls always abut against the inclined surface, pushing the telescopic rod to move upward and abut against the top of the tunnel.

2. The drilling rig stabilization device for coal mine roadway support according to claim 1, characterized in that: The support assembly also includes a fixed seat fixedly connected to the top of the turntable, a fixed tube fixedly connected to the top of the fixed seat, a telescopic rod located inside the fixed tube and slidably connected to the fixed tube, a through groove opened on the bottom of the fixed tube facing the drilling device, a set of first sliding grooves opened on the inner side of the fixed tube, a set of sliders opened on the outer side of the telescopic rod, and a second connecting plate ball-jointed on the top of the telescopic rod.

3. The drilling rig stabilization device for coal mine roadway support according to claim 2, characterized in that: The first slide groove is spirally arranged, and the slider is adapted to the first slide groove and slidably connected.

4. The drilling rig stabilization device for coal mine roadway support according to claim 2, characterized in that: The sliding assembly also includes a guide groove on the top of the fixed base, a push rod is fixedly connected to the side of the movable ball away from the inclined plane, a locking block is fixedly connected to the bottom of the push rod, and a second sliding groove is also provided on the top of the fixed base, with the locking block slidably connected to the second sliding groove.

5. The drilling rig stabilization device for coal mine roadway support according to claim 4, characterized in that: The top of the fixed base, the bottom of the second slide groove, and the bottom of the guide groove are all inclined.

6. The drilling rig stabilization device for coal mine roadway support according to claim 1, characterized in that: The movable component also includes a fixed rod that is ball-jointed with the linkage assembly. A set of connecting members is rotatably connected to the linkage assembly, and a set of tension springs is fixedly connected between the two connecting members.

7. The drilling rig stabilization device for coal mine roadway support according to claim 6, characterized in that: The linkage assembly consists of a pair of first links and a pair of second links, and is generally quadrilateral in shape. The connector is located between the first links and the second links. Both the first links and the second links are rotatably connected to the connector. The end of the first link away from the second link is connected to the fixed rod ball joint, and the end of the second link away from the first link is connected to the push rod ball joint.

8. The drilling rig stabilization device for coal mine roadway support according to claim 6, characterized in that: The fixed cylinder of the push rod is slidably connected to a movable collar, which is fixedly connected to the fixed rod.

9. The drilling rig stabilization device for coal mine roadway support according to claim 1, characterized in that: The bottom of the turntable is rotatably connected to a frame, and a set of hydraulic support legs are fixedly installed at the bottom of the frame.

10. The drilling rig stabilization device for coal mine roadway support according to claim 1, characterized in that: The top ball joint of the top rod has a first connecting plate.

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