Raise boring machine power head

Abstract

A power head of a raise drilling rig comprises a gear box, a transmission component, a drill rod limiting device and a power head connecting component, wherein the drill rod limiting device is fixedly arranged below the gear box, the power head connecting component is installed inside the gear box, the power head connecting component is connected to the gear box through a bearing, the transmission component is sleeved on the power head connecting component, and the transmission component is meshed with the gear of the gear box; the present invention eliminates the traditional slip device, solves the inconvenience of slip loading and unloading and the hidden danger of slip not being fixed; the function of positioning the drill rod is realized by the drill rod limiting device, the power head and the drill rod limiting device are integrated, the drill rod limiting device is coaxial with the main shaft of the power head, and the positioning is accurate; when in use, only one operator is required to operate on the operating table, and whether the drill rod is fixed is determined by the position of the shift block. Compared with slips, the visualization is high and the operation is convenient.

Description

Technical Field

[0001] The invention relates to the technical field of raise boring machine equipment, in particular to a raise boring machine power head. Background Art

[0002] As the core component of the drilling rig, the power head of the raise drilling rig not only provides torque and push-pull force for drilling work, but also serves the function of connecting and disassembling the drill pipe. A complete set of drill pipe disassembly functions includes the following steps: first, fix the lower adjacent drill pipe of the drill pipe to be unloaded with a plug plate, rotate the power head in the opposite direction, loosen the external thread of the drill pipe to be unloaded and the power head thread (loosen 0.5 to 1 circle), then use the slip device to fix the drill pipe to be unloaded, rotate the power head in the opposite direction, disengage the internal thread of the drill pipe to be unloaded from the external thread of the drill pipe adjacent to the lower part, fix the drill pipe to be unloaded with the drill pipe conveying device, then disengage the slip from the drill pipe to be unloaded, rotate the power head until the external thread of the drill pipe to be unloaded is completely disengaged from the power head thread, and the drill pipe conveying device transports the drill pipe to be unloaded away to complete the drill pipe disassembly function. As can be seen from the above, the traditional power head must use the slip device during the drill pipe disassembly process to complete the whole set of actions for drill pipe disassembly.

[0003] The prior art has the following defects: the slip device is large in size and inconvenient to disassemble; the slip is fixed to each other by the inner square and the drill pipe clamp, the operator's vision is blocked, and positioning is inconvenient; during the removal of the drill pipe, manual handling or mechanical devices are required to move the slip, and the above two methods require the operator to assist in the centering and fixation of the slip and the drill pipe; regardless of manual or mechanical movement, the slip is not completely fixed, posing a safety hazard. Summary of the invention

[0004] In view of this, it is necessary to provide a kind of reverse drilling rig power head.

[0005] A power head of a raise drilling rig, comprising a gear box, a transmission component, a drill rod limiting device, and a power head connecting component, wherein the drill rod limiting device is fixedly arranged below the gear box, the power head connecting component is installed inside the gear box, the power head connecting component is connected to the gear box through a bearing, the transmission component is sleeved on the power head connecting component, and the transmission component is meshed with the gear of the gear box;

[0006] The drill rod limiting device comprises a telescopic component, a bracket, a supporting and connecting component, and a fixed limiting component, wherein the supporting and connecting component comprises a supporting plate and a connecting sleeve, the lower end of the connecting sleeve is provided with a square groove, the supporting plate is fixedly arranged at the bottom of the connecting sleeve, the bracket is sleeved on the outside of the connecting sleeve, a spacing is left between the bracket and the connecting sleeve, the lower part of the fixed limiting component is arranged in the square groove on the connecting sleeve, the upper part of the fixed limiting component is located between the bracket and the connecting sleeve, the upper part of the fixed limiting component contacts the inner wall of the bracket, the telescopic component is arranged on the upper part of the connecting sleeve and fixed to the lower part of the gear box, the lower end of the telescopic component is fixedly connected to the bracket, the telescopic component telescopes up and down, and can drive the bracket to move up and down, so that the bracket drives the fixed limiting component to slide along the square groove;

[0007] The power head connecting component includes a center tube, a floating sleeve, inner and outer spline sleeves, and a cover plate. A limiting connecting piece is fixedly arranged at the lower end of the center tube. The inner and outer spline sleeves are sleeved on the limiting connecting piece. The upper parts of the inner and outer spline sleeves are sleeved on the outside of the lower end of the transmission component. The lower parts of the inner and outer spline sleeves are inserted into the connecting sleeve and fixed. The floating sleeve is arranged below the limiting connecting piece and is located inside the inner and outer spline sleeves. The cover plate is fixedly arranged below the inner and outer spline sleeves to fix the inner and outer spline sleeves, the floating sleeve and the limiting connecting piece.

[0008] Preferably, the fixed limiting component includes a shift block and a torsion bearing slider, the torsion bearing slider is arranged in a square groove on the connecting sleeve, the shift block is located between the bracket and the connecting sleeve, the middle part of the shift block is connected to the outer wall pin of the connecting sleeve, the upper part of the shift block contacts the inner wall of the bracket, and the lower end of the shift block is connected to the torsion bearing slider pin.

[0009] Preferably, the shift block is C-shaped, one side of the shift block having an arcuate surface contacts the inner wall of the bracket, and pin holes are provided in the middle and lower part of the shift block.

[0010] Preferably, a fixed connection groove is provided on the upper portion of the inner wall of the connecting sleeve, and a circular hole for the drill rod to pass through is opened in the middle position of the supporting plate.

[0011] Preferably, an annular groove is provided on the outer wall of the bracket, a connector is fixedly provided inside the annular groove, the upper end of the connector is pin-connected to the lower end of the telescopic component, and the connector is arranged at 180° to each other.

[0012] Preferably, the inner and outer spline sleeves are stepped, and the upper diameter of the inner and outer spline sleeves is smaller than the lower diameter of the inner and outer spline sleeves, so that a positioning platform is formed in the middle position of the inner wall of the inner and outer spline sleeves, and the upper part of the inner wall of the inner and outer spline sleeves is provided with an upper inner spline, and the lower part of the inner wall of the inner and outer spline sleeves is provided with a lower inner spline, and the lower part of the outer wall of the inner and outer spline sleeves is provided with a first outer spline, and the first outer spline is engaged with the fixed connecting groove on the inner wall of the connecting sleeve, and a threaded hole is provided on the bottom surface of the inner and outer spline sleeves, and a connecting recess is provided on the bottom surface of the inner and outer spline sleeves, and the connecting recess extends upward along the inner wall of the inner and outer spline sleeves.

[0013] Preferably, a second external spline is provided on the outer wall of the floating sleeve, the second external spline is meshed with the lower internal spline provided on the lower part of the inner wall of the inner and outer spline sleeves, a positioning boss is provided in the middle position of the lower surface of the floating sleeve, a limiting boss is provided in the middle position of the upper surface of the floating sleeve, a tapered threaded hole is provided in the middle position of the positioning boss, and the tapered threaded hole passes through the floating sleeve.

[0014] Preferably, bolt holes are provided on the cover plate, a connecting boss is provided in the middle of the upper surface of the cover plate, a through hole is provided in the middle of the connecting boss, the through hole matches the positioning boss on the lower surface of the floating sleeve, so that the cover plate can be mounted on the positioning boss.

[0015] Preferably, the interior of the central tube is hollow, and a fastener is further provided on the upper portion of the central tube, and the fastener is threadedly connected to the central tube.

[0016] Preferably, the transmission component includes a main shaft and a transmission gear. The main shaft is sleeved on the center tube, the main shaft is connected to the gear box through a bearing, the lower end of the main shaft is meshed with the upper internal spline on the inner wall of the inner and outer spline sleeves, the transmission gear is sleeved on the main shaft, and the rotating gear is meshed with the gear box.

[0017] The present invention adopts the above technical scheme, and its beneficial effects are: the invention includes a gear box, a transmission component, a drill rod limiting device, and a power head connecting component, the drill rod limiting device is fixedly arranged below the gear box, the power head connecting component is installed inside the gear box, the power head connecting component is connected to the gear box through a bearing, the transmission component is sleeved on the power head connecting component, and the transmission component is meshed with the gear of the gear box; compared with the prior art, the present invention has the following advantages: it eliminates the traditional cava device, solves the inconvenience of loading and unloading the cava and the hidden dangers of the cava not being fixed; the function of positioning the drill rod is realized by the drill rod limiting device, the power head and the drill rod limiting device are integrated, the drill rod limiting device is coaxial with the main shaft of the power head, and the positioning is accurate; when in use, only one operator is needed to operate at the operating table, and whether the drill rod is fixed is determined by the position of the shift block. Compared with the cava, it has a high degree of visualization and is easy to operate. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a schematic diagram of the structure of the present invention.

[0019] Figure 2 It is a structural schematic diagram of the drill rod limiting device of the present invention.

[0020] Figure 3 for Figure 2 Schematic diagram of the cross-sectional structure.

[0021] Figure 4 It is a schematic structural diagram of the connection between the supporting connection component and the fixed limiting component of the present invention.

[0022] Figure 5 It is a schematic structural diagram of the supporting connection component of the present invention.

[0023] Figure 6 It is a structural schematic diagram of the bracket of the present invention.

[0024] Figure 7 It is a structural schematic diagram of the shift block of the present invention.

[0025] Figure 8 It is a schematic structural diagram of the power head connecting parts of the present invention.

[0026] Fig. 9 for Figure 8 Schematic diagram of the cross-sectional structure.

[0027] Fig.10 It is a structural schematic diagram of the connection between the power head connecting component and the main shaft and the drill rod of the present invention.

[0028] Fig.11 It is a structural schematic diagram of the inner and outer spline sleeves of the present invention.

[0029] Fig.12 It is a structural schematic diagram of the floating sleeve of the present invention.

[0030] Fig.13 It is a structural schematic diagram of the cover plate of the present invention.

[0031] In the figure: drill rod limiting device 01, telescopic component 11, bracket 12, annular groove 121, connector 122, supporting connecting component 13, supporting plate 131, connecting sleeve 132, square groove 133, fixed connecting groove 134, round hole 135, fixed limiting component 14, shift block 141, torsion slider 142, pin hole 143, power head connecting component 02, central tube 21, limiting connector 211, fastener 212, floating sleeve 2 2. Second external spline 221, positioning boss 222, limiting boss 223, tapered threaded hole 224, internal and external spline sleeves 23, positioning platform 231, upper internal spline 232, lower internal spline 233, first external spline 234, threaded hole 235, connecting recess 236, cover plate 24, bolt hole 241, connecting boss 242, through hole 243, transmission component 03, main shaft 31, transmission gear 32, drill rod 04, gear box 05. DETAILED DESCRIPTION

[0032] Please see Figures 1 to 13 The embodiment of the present invention provides a power head of a raise drilling rig, comprising a gear box 05, a transmission component 03, a drill rod limiting device 01, and a power head connecting component 02. The drill rod limiting device 01 is fixedly arranged below the gear box 05, the power head connecting component 02 is installed inside the gear box 05, the power head connecting component 02 is connected to the gear box 05 through a bearing, the transmission component 03 is sleeved on the power head connecting component 02, and the transmission component 03 is meshed with the gear of the gear box 05;

[0033] The drill rod limiting device 01 includes a telescopic component 11, a bracket 12, a supporting and connecting component 13, and a fixed limiting component 14. The supporting and connecting component 13 includes a supporting plate 131 and a connecting sleeve 132. A square groove 133 is provided at the lower end of the connecting sleeve 132, wherein the number of the square grooves 133 is at least three, and the square grooves 133 are evenly distributed along the circumferential direction of the connecting sleeve 132. The supporting plate 131 is fixedly arranged at the bottom of the connecting sleeve 132, and a circular hole 135 for the drill rod to pass through is opened in the middle position of the supporting plate 131. The bracket 12 is sleeved on the outside of the connecting sleeve 132, and a spacing is left between the bracket 12 and the connecting sleeve 132. The number of the fixed limiting components 14 corresponds to the number of the square grooves 133, that is, the number of the fixed limiting components 14 is the same as the number of the square grooves 133. The lower part of the fixed limiting component 14 is arranged in the square groove 133 on the connecting sleeve 132, and the upper part of the fixed limiting component 14 is located between the bracket 12 and the connecting sleeve 132. The upper part of the fixed limiting component 14 contacts the inner wall of the bracket 12. The telescopic component 11 is arranged on the upper part of the connecting sleeve 132 and fixed to the lower part of the gear box 05. The lower end of the telescopic component 11 is fixedly connected to the bracket 12, wherein the telescopic component 11 is one of a hydraulic cylinder, a pneumatic telescopic cylinder, and an electric telescopic cylinder. The vertical reciprocating motion of the telescopic component 11 can drive the bracket 12 to move up and down, so that the bracket 12 drives the fixed limiting component 14 to slide along the square groove 133, thereby realizing accurate limiting of the drill rod and realizing flexible limiting of the drill rod.

[0034] The power head connecting component 02 includes a center tube 21, a floating sleeve 22, inner and outer spline sleeves 23, and a cover plate 24. A limiting connection piece 211 is fixedly provided at the lower end of the center tube 21. The inner and outer spline sleeves 23 are sleeved on the limiting connection piece 211. The upper parts of the inner and outer spline sleeves 23 are sleeved on the outside of the lower end of the transmission component 03. The lower parts of the inner and outer spline sleeves 23 are inserted into the connecting sleeve 132 and fixed. The floating sleeve 22 is arranged below the limiting connection piece 211 and is located inside the inner and outer spline sleeves 23. The cover plate 24 is fixedly arranged below the inner and outer spline sleeves 23 to fix the inner and outer spline sleeves 23, the floating sleeve 22 and the limiting connection piece 211.

[0035] Please see Figures 2 to 7The fixed limiting component 14 includes a shift block 141 and a torsion slider 142. The torsion slider 142 is arranged in the square groove 133 on the connecting sleeve 132. The shift block 141 is located between the bracket 12 and the connecting sleeve 132. The shift block 141 is in a C shape. The middle and lower parts of the shift block 141 are provided with pin holes 143. The pin hole 143 provided in the middle part of the shift block 141 is connected with the outer wall pin shaft of the connecting sleeve 132. The lower part of the shift block 141 is provided with a pin hole 143. The pin hole 143 in the upper part is connected with the pin shaft of the torsion slider 142. The side of the arc-shaped surface of the shift block 141 contacts the inner wall of the bracket 12. When the bracket 12 moves up and down, the bracket 12 drives the shift block 141 to rotate, so that the shift block 141 can push the torsion slider 142 to slide along the square groove 133 on the connecting sleeve 132, so that the torsion slider 142 clamps and fixes the drill rod, thereby realizing accurate positioning of the drill rod and flexible positioning of the drill rod.

[0036] The upper part of the inner wall of the connecting sleeve 132 is provided with a fixed connecting groove 134, which can facilitate the connection and fixation of the connecting sleeve 132 and the power head of the raise drilling rig.

[0037] An annular groove 121 is formed on the outer wall of the bracket 12. A connector 122 is fixedly disposed inside the annular groove 121, and the upper end of the connector 122 is pin-connected to the lower end of the telescopic component 11. The connector 122 is disposed at 180 degrees opposite to each other.

[0038] Please see Figures 9 to 11 The inner and outer spline sleeves 23 are stepped, and the upper diameter of the inner and outer spline sleeves 23 is smaller than the lower diameter of the inner and outer spline sleeves 23, so that a positioning platform 231 is formed in the middle position of the inner wall of the inner and outer spline sleeves 23. During the installation process, the positioning platform 231 is just stuck on the limiting connector 211, which can play a role in limiting and positioning.

[0039] An upper inner spline 232 is provided at the upper part of the inner wall of the inner and outer spline sleeve 23, and the upper inner spline 232 is used to connect with the main shaft 31, and a lower inner spline 233 is provided at the lower part of the inner wall of the inner and outer spline sleeve 23. A first outer spline 234 is provided at the lower part of the outer wall of the inner and outer spline sleeve 23, and the first outer spline 234 is used to cooperate with the drill rod limiting device 01, wherein the first outer spline 234 is engaged with the fixed connection groove 134 on the inner wall of the connection sleeve 132. A threaded hole 235 is provided on the bottom surface of the inner and outer spline sleeve 23, and a connecting concave platform 236 is provided on the bottom surface of the inner and outer spline sleeve 23, and a connecting boss 242 extends upward along the inner wall of the inner and outer spline sleeve 23. The cover plate 24 is provided with a bolt hole 241, and a connecting boss 242 is provided in the middle of the upper surface of the cover plate 24. The connecting boss 242 is inserted into the connecting recess 236 on the bottom surface of the inner and outer spline sleeves 23, which can play a limiting role. The bolt is inserted into the bolt hole 241 and screwed into the threaded hole 235, so that the cover plate 24 and the inner and outer spline sleeves 23 can be fixed. A through hole 243 is provided in the middle of the connecting boss 242, and the through hole 243 matches the positioning boss 222 on the lower surface of the floating sleeve 22, so that the cover plate 24 can be sleeved on the positioning boss 222.

[0040] Please see Fig. 9 , Fig.12 The outer wall of the floating sleeve 22 is provided with a second external spline 221, which is engaged with a lower internal spline 233 provided at the lower part of the inner wall of the internal and external spline sleeve 23. A positioning boss 222 is provided at the middle position of the lower surface of the floating sleeve 22, and a limiting boss 223 is provided at the middle position of the upper surface of the floating sleeve 22. A tapered threaded hole 224 is provided at the middle position of the positioning boss 222, and the tapered threaded hole 224 passes through the floating sleeve 22. The tapered threaded hole 224 is used to install the drill rod 04.

[0041] The center tube 21 is hollow inside, so that water for cooling the drill rod 04 can flow through the center. A fastener 212 is also provided on the upper part of the center tube 21, and the fastener 212 is threadedly connected to the center tube 21. The fastener 212 can be used to position the main shaft 31.

[0042] The transmission component 03 includes a main shaft 31 and a transmission gear 32. The main shaft 31 is mounted on the center tube 21. The main shaft 31 is connected to the gear box 05 through a bearing. The lower end of the main shaft 31 is meshed with the upper internal spline 232 on the inner wall of the internal and external spline sleeves 23. The transmission gear 32 is mounted on the main shaft 31, and the rotating gear 32 is meshed with the gear box 05.

[0043] What is disclosed above is only a preferred embodiment of the present invention, which certainly cannot be used to limit the scope of rights of the present invention. A person skilled in the art can understand that all or part of the processes of the above embodiments and equivalent changes made according to the claims of the present invention still fall within the scope of the invention.

Claims

1. A power head of a raise drilling rig, characterized in that: It includes a gear box, a transmission component, a drill rod limit device, and a power head connecting component. The drill rod limit device is fixedly arranged below the gear box, the power head connecting component is installed inside the gear box, the power head connecting component is connected to the gear box through a bearing, the transmission component is sleeved on the power head connecting component, and the transmission component is meshed with the gear of the gear box; The drill rod limiting device comprises a telescopic component, a bracket, a supporting and connecting component, and a fixed limiting component, wherein the supporting and connecting component comprises a supporting plate and a connecting sleeve, the lower end of the connecting sleeve is provided with a square groove, the supporting plate is fixedly arranged at the bottom of the connecting sleeve, the bracket is sleeved on the outside of the connecting sleeve, a spacing is left between the bracket and the connecting sleeve, the lower part of the fixed limiting component is arranged in the square groove on the connecting sleeve, the upper part of the fixed limiting component is located between the bracket and the connecting sleeve, the upper part of the fixed limiting component contacts the inner wall of the bracket, the telescopic component is arranged on the upper part of the connecting sleeve and fixed to the lower part of the gear box, the lower end of the telescopic component is fixedly connected to the bracket, the telescopic component telescopes up and down, and can drive the bracket to move up and down, so that the bracket drives the fixed limiting component to slide along the square groove; The power head connection component includes a center tube, a floating sleeve, inner and outer spline sleeves, and a cover plate. A limited connection piece is fixedly arranged at the lower end of the center tube. The inner and outer spline sleeves are sleeved on the limited connection piece. The upper parts of the inner and outer spline sleeves are sleeved on the outside of the lower end of the transmission component. The lower parts of the inner and outer spline sleeves are inserted into the connecting sleeve and fixed. The floating sleeve is arranged below the limited connection piece and is located inside the inner and outer spline sleeves. The cover plate is fixedly arranged below the inner and outer spline sleeves, fixing the inner and outer spline sleeves, the floating sleeve and the limited connection piece. Fixed; the fixed limiting component includes a shift block and a torsion slider, the torsion slider is arranged in the square groove on the connecting sleeve, the shift block is located between the bracket and the connecting sleeve, the middle part of the shift block is connected to the outer wall pin of the connecting sleeve, the upper part of the shift block contacts the inner wall of the bracket, and the lower end of the shift block is connected to the pin of the torsion slider; an annular groove is provided on the outer wall of the bracket, and a connecting head is fixedly arranged inside the annular groove, the upper end of the connecting head is connected to the lower end pin of the telescopic component, and the connecting head is arranged at 180° opposite to each other.

2. The raise boring machine power head according to claim 1, characterized in that: The shift block is C-shaped, one side of the shift block having an arc surface contacts the inner wall of the bracket, and pin holes are arranged in the middle and lower part of the shift block.

3. The power head of the raise boring machine according to claim 1, characterized in that: A fixed connection groove is arranged on the upper part of the inner wall of the connecting sleeve, and a round hole for the drill rod to pass through is opened in the middle position of the supporting plate.

4. The power head of the raise boring machine according to claim 1, characterized in that: The inner and outer spline sleeves are stepped, and the upper diameter of the inner and outer spline sleeves is smaller than the lower diameter of the inner and outer spline sleeves, so that a positioning platform is formed in the middle position of the inner wall of the inner and outer spline sleeves, and the upper part of the inner wall of the inner and outer spline sleeves is provided with an upper inner spline, and the lower part of the inner wall of the inner and outer spline sleeves is provided with a lower inner spline. The lower part of the outer wall of the inner and outer spline sleeves is provided with a first outer spline, and the first outer spline is engaged with the fixed connecting groove on the inner wall of the connecting sleeve. A threaded hole is opened on the bottom surface of the inner and outer spline sleeves, and a connecting recess is provided on the bottom surface of the inner and outer spline sleeves, and the connecting recess extends upward along the inner wall of the inner and outer spline sleeves.

5. The raise boring machine power head according to claim 1, characterized in that: A second external spline is arranged on the outer wall of the floating sleeve, and the second external spline is meshed with the lower internal spline arranged at the lower part of the inner wall of the inner and outer spline sleeves. A positioning boss is arranged in the middle position of the lower surface of the floating sleeve, and a limiting boss is arranged in the middle position of the upper surface of the floating sleeve. A tapered threaded hole is arranged in the middle position of the positioning boss, and the tapered threaded hole passes through the floating sleeve.

6. The power head of the raise boring machine according to claim 1, characterized in that: The cover plate is provided with bolt holes, a connecting boss is arranged in the middle of the upper surface of the cover plate, a through hole is arranged in the middle of the connecting boss, the through hole matches the positioning boss on the lower surface of the floating sleeve, so that the cover plate can be mounted on the positioning boss.

7. The power head of the raise boring machine according to claim 6, characterized in that: The interior of the central tube is hollow, and a fastener is also arranged on the upper part of the central tube, and the fastener is threadedly connected to the central tube.

8. The power head of the raise boring machine according to claim 1, characterized in that: The transmission component includes a main shaft and a transmission gear. The main shaft is sleeved on the central tube. The main shaft is connected to the gear box through a bearing. The lower end of the main shaft is meshed with the upper internal splines on the inner walls of the inner and outer spline sleeves. The transmission gear is sleeved on the main shaft, and the rotating gear is meshed with the gear box.

Images