Self-walking large-diameter raise boring machine

Abstract

A self-walking large-diameter raise boring machine belongs to the technical field of mining machinery and comprises a crawler chassis assembly, the crawler chassis assembly comprises a chassis frame, a main machine assembly is hinged to one end of the chassis frame, a power assembly is fixedly mounted at the other end of the chassis frame, and a groove is formed in the upper surface of the chassis frame. A groove is formed in the bottom plate, a pitching oil cylinder hinge seat is fixedly arranged on the side wall of the groove or the bottom plate, the pitching oil cylinder hinge seat is lower than the upper surface of the chassis frame, the pitching oil cylinder hinge seat is connected with the main machine assembly through a pitching oil cylinder, and an inclined supporting beam is detachably connected between the chassis frame and the top of the main machine assembly. The space occupied by the pitching oil cylinder on the upper surface of the chassis frame is reduced so as to reduce the height of the main machine assembly when the main machine assembly is folded, the inclined supporting beam can support the main machine assembly in an inclined state, the supporting rigidity and stability of the main machine assembly in inclined drilling work are improved, the inclined supporting beam is of a detachable structure, and the influence on the folding of the main machine assembly can be avoided.

Description

Technical Field

[0001] The utility model relates to the technical field of mining machinery, in particular to a self-propelled large-diameter raise drill. Background Art

[0002] A raise drill is a shaft excavation machine that uses rotary drilling to break rocks and form holes, and can also expand the holes in reverse. In order to facilitate the transfer of the raise drill and enable it to have the ability to move independently, the raise drill is currently mostly installed as a whole on a traveling mechanism.

[0003] Currently, a crawler-type walking mechanism (such as publication number CN105888543B) is commonly used in raise boring rigs. The crawler-type walking mechanism is connected to the crawler assembly through a chassis frame. The chassis frame is used to install the raise boring rig to achieve the ability of autonomous movement of the raise boring rig, and the outrigger assembly is used to achieve positioning and horizontal adjustment to ensure the stability of the entire machine during the drilling process.

[0004] Existing underground mines generally have limited space for haulage tunnels. Self-propelled shaft drills with an excavation diameter of about 3 meters are limited by the structure of the traveling mechanism (the pitch cylinder articulated seat is set on the surface of the chassis frame). The overall dimensions (especially the height dimension) of the shaft drill are close to or have reached the size limit that the underground mine haulage tunnel can bear. Increasing the dimensions to improve processing capacity and work efficiency is no longer possible. Larger shaft drills (excavation diameters of more than 3 meters) are difficult to move on their own in underground mine tunnels. They need to be repeatedly disassembled, transported, and reassembled, and towed and transported by tractors, which is time-consuming, labor-intensive, and has high transfer costs. In addition, specific projects require the drilling of inclined holes. The main body of the existing self-propelled shaft drill is tilted mainly by the support of the pitch cylinder, which has poor rigidity and stability, making it difficult to ensure construction quality. Utility Model Content

[0005] In order to solve the technical problems existing in the above-mentioned background technology, that the existing small and medium-sized shaft drilling rigs are limited by the overall structure of their walking mechanisms, and when improving their working capacity (excavation diameter of more than 3 meters), they cannot meet the requirements of autonomous walking in existing underground mine transportation tunnels, and the support rigidity and stability of the main machine during tilt construction are poor, the utility model provides a self-propelled large-diameter shaft drilling rig.

[0006] The technical solution of this utility model is as follows:

[0007] The utility model provides a self-propelled large-diameter shaft drilling rig, comprising a crawler chassis assembly, the crawler chassis assembly comprising a chassis frame, leg assemblies being installed at both end corners of the chassis frame, a main engine assembly being hingedly connected to one end of the chassis frame, and a power assembly being fixedly installed at the other end, a groove being provided on the upper surface of the chassis frame, a pitch cylinder articulated seat being fixedly provided on the side wall or bottom plate of the groove, the groove causing the pitch cylinder articulated seat to sink and be lower than the upper surface of the chassis body, thereby reducing the space occupied by the pitch cylinder on the upper surface of the chassis frame, thereby reducing the height of the main engine assembly when the machine is retracted, thereby ensuring that the overall height of the shaft drilling rig meets the requirements of underground mine tunnels. While meeting the walking requirements, it is also possible to adaptively increase the specifications of the main machine assembly (excavation diameter of more than 3 meters) to improve its walking ability, without repeated disassembly, transportation, and reinstallation, which reduces costs. The pitch cylinder articulated seat is connected to the main machine assembly through the pitch cylinder, and a number of groups of oblique support articulated seats are fixed on the upper surface of the chassis frame. An oblique support beam is detachably connected between the oblique support articulated seat and the top of the main machine assembly, and the two ends of the oblique support beam are respectively connected to the main machine assembly and the crawler chassis assembly, thereby supporting the main machine assembly in a tilted state, improving the supporting stiffness and stability of the main machine assembly during oblique drilling work, and ensuring construction quality.

[0008] Preferably, the main engine assembly includes a main engine drive reduction gearbox fixedly mounted on the propulsion cylinder, a drive head and an upper and lower unloading rod assembly are installed at the lower part of the propulsion cylinder, the propulsion cylinder is vertically arranged, and the bottom of the propulsion cylinder is fixedly connected to the main engine base, and the main engine base forms a triangular hinged structure with the chassis frame and the pitch cylinder. The main engine drive reduction gearbox is also slidably mounted on the guide column through a sliding guide sleeve, and the guide column and the propulsion cylinder jointly play a guiding role in propulsion and lifting.

[0009] Preferably, there are two pitch cylinders and two guide columns, the two propulsion cylinders are fixedly connected by a cross beam, and the upper ends of the two guide columns are fixedly connected by a connecting plate. The cross beam and the connecting plate enhance the firmness and stability of the connection, and the connecting plate is used for detachable connection with the oblique support beam to utilize the oblique support beam to provide oblique support to the main engine assembly.

[0010] Preferably, the main engine drive reduction gearbox includes two hydraulic motors, and the output ends of the two motors are respectively fixedly connected to a small gear. A large gear is rotatably provided at the center position of the main engine drive reduction gearbox, and the large gear is engaged with two small gears on both sides of it. The large gear is fixedly connected to the drive head. The two hydraulic motors are driven simultaneously or separately, and can realize switching between high torque output working state and high speed output working state according to actual working conditions.

[0011] Preferably, two oppositely arranged shoe plates are connected to the bottom of the main body base, one end of the shoe plate is hinged to the main body base, and the other end of the shoe plate is connected to the main body base through an angle adjustment mechanism. A number of bolt holes are provided at intervals along the length direction of the shoe plate, and the shoe plate can be locked and fixed to the ground by bolts to ensure the stability of the drilling rig when working.

[0012] Preferably, an inverted L-shaped track fixing seat is fixed on both side walls of the chassis frame, and a number of bolt holes are opened on the horizontal and vertical surfaces of the track fixing seat. The track fixing seat is connected to the walking track, and is connected to the walking track through two perpendicular connecting surfaces, which increases the contact area and the connection points, effectively improving the connection stability and firmness between the walking track and the chassis frame.

[0013] Preferably, the oblique support beam is a telescopically adjustable inclined structure, which has the ability to adjust its length. By using oblique support hinge seats in different positions, the main engine assembly can be adjusted at multiple angles.

[0014] Preferably, the powertrain includes a powertrain chassis, on which a shell is detachably mounted, and on which a fuel engine hydraulic pump group, an electric motor hydraulic pump group, a hydraulic control valve group, a hydraulic oil heat exchanger, an auxiliary hydraulic oil tank, an electronic control cabinet group and a power supply cabinet group are fixed, and a main hydraulic oil tank and a fuel tank are embedded inside the powertrain chassis, and the main hydraulic oil tank is connected to the auxiliary hydraulic oil tank, which facilitates the installation and disassembly of power components, saves installation space, and makes the overall structure more compact.

[0015] Preferably, the auxiliary hydraulic oil tank is higher than the fuel engine hydraulic pump group and the electric motor hydraulic pump group, which can ensure that when the hydraulic pump is working, the hydraulic oil can be smoothly injected into the pump from the oil tank without forming air bubbles in the pump due to the low position of the oil tank, thereby avoiding the generation of bubbles and reducing pressure fluctuations.

[0016] Preferably, a hydraulic lifting unit is fixedly installed on one end of the chassis frame away from the main machine assembly, and a hydraulic manipulator is fixedly installed on one side of the main machine assembly. The hydraulic manipulator can be installed interchangeably on the left and right sides of the main machine assembly, thereby improving the degree of automation of the skydrilling rig and reducing labor intensity.

[0017] It can be seen from the above technical solutions that the advantages of the present invention are:

[0018] 1. A groove is provided on the upper surface of the chassis frame, and a number of pitch cylinder articulated seats are fixedly provided on the side walls or bottom plates of the groove. The groove causes the pitch cylinder articulated seats to sink and be lower than the upper surface of the chassis body, reducing the space occupied by the pitch cylinder on the upper surface of the chassis frame, so as to reduce the height of the main engine assembly when the machine is retracted. While ensuring that the overall height of the shaft drilling rig meets the requirements of walking in underground mine tunnels, the specifications of the main engine assembly can be adaptively increased to improve its walking ability, eliminating the need for repeated disassembly, transportation, and reassembly, thereby reducing costs. An oblique support beam is detachably connected between the chassis frame and the main engine assembly. The oblique support beam is used to support the main engine assembly in an inclined state, thereby improving the support stiffness and stability of the main engine assembly during inclined drilling work and ensuring construction quality. The oblique support beam is a detachable structure, which can avoid affecting the height of the main engine assembly when it is retracted.

[0019] 2. The oblique support beam is a telescopically adjustable inclined structure with the ability to adjust its length. Combined with the use of oblique support hinge seats in different positions, the inclination of the main engine assembly can be adjusted at multiple angles.

[0020] 3. The auxiliary hydraulic oil tank is higher than the fuel engine hydraulic pump group and the electric motor hydraulic pump group, which can ensure that when the hydraulic pump is working, the hydraulic oil can be smoothly injected into the pump from the oil tank without forming air bubbles in the pump due to the low position of the oil tank, thereby avoiding the generation of bubbles and reducing pressure fluctuations. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] In order to more clearly illustrate the technical solution of the present invention, the following is a brief introduction to the drawings required for the description. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0022] Figure 1 Schematic diagram of the overall structure of a self-propelled large-diameter raise boring rig according to one or more embodiments of the present invention;

[0023] Figure 2 Schematic diagram of the positional relationship between the crawler chassis assembly and the power assembly according to one or more embodiments of the present invention;

[0024] Figure 3 This is a schematic structural diagram of a chassis frame according to one or more embodiments of the present invention;

[0025] The components represented by the reference numerals in the figure are:

[0026] 1. Mainframe assembly; 2. Mainframe drive reduction gearbox; 3. Drive head and loading and unloading rod assembly; 4. Propulsion cylinder; 5. Guide column; 6. Mainframe base; 7. Mainframe base hinge seat; 8. Crossbeam; 9. Connecting plate; 10. Sliding guide sleeve; 11. Boot plate; 12. Angle adjustment mechanism; 13. Crawler chassis assembly; 14. Walking crawler track; 15. Chassis frame; 16. Outrigger; 17. Pitching cylinder; 18. Track fixing seat; 19. , pitch cylinder articulated seat; 20. Oblique support beam; 21. Powertrain; 22. Powertrain chassis; 23. Fuel engine hydraulic pump group; 24. Electric motor hydraulic pump group; 25. Hydraulic control valve group; 26. Hydraulic oil heat exchanger; 27. Main hydraulic oil tank; 28. Auxiliary hydraulic oil tank; 29. ​​Fuel tank; 30. Electric control cabinet group; 31. Power supply cabinet group; 32. Casing; 33. Hydraulic manipulator; 34. Hydraulic lifting unit. DETAILED DESCRIPTION

[0027] In order to make the purpose, features, and advantages of the present invention more obvious and easy to understand, the technical solutions of the present invention will be clearly and completely described below in conjunction with the drawings in the specific embodiments. Obviously, the embodiments described below are only part of the embodiments of the present invention, not all of them. Based on the embodiments in this patent, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of this patent.

[0028] In a typical embodiment of the present invention, Figure 1-Figure 3 As shown, a self-propelled large-diameter raise boring rig is proposed, comprising: a mainframe assembly 1, a crawler chassis assembly 13, and a power assembly 21. The mainframe assembly 1 is hinged to one end of the crawler chassis assembly 13. A pitching cylinder 17 is hinged to the crawler chassis assembly 13. One end of the pitching cylinder 17 is hinged to the crawler chassis assembly 13, and the other end of the pitching cylinder 17 is hinged to the mainframe assembly 1. The mainframe assembly 1 is driven to rotate by the pitching cylinder 17 to change the tilt angle of the mainframe assembly 1, thereby realizing the vertical, retracted, and tilted states of the machine. Adjust and switch, wherein the retracted state is used for the self-propelled movement of the entire machine, and the upright and tilted states are used for drilling or reaming holes with the drilling rig. The crawler chassis assembly 13 can also be detachably installed with an oblique support component, and the two ends of the oblique support component are respectively hinged to the top of the main machine assembly 1 and the crawler chassis assembly 13, thereby supporting the main machine assembly 1 in the tilted state, improving the support stiffness and stability of the main machine assembly 1 during the oblique drilling work, and ensuring the construction quality. The power assembly 21 is fixedly installed on the end of the crawler chassis assembly 13 away from the main machine assembly 1.

[0029] The main engine assembly 1 includes a main engine drive reduction box 2, a drive head and loading and unloading rod assembly 3, a thrust cylinder 4, a guide column 5 and a main engine base 6. The drive head and loading and unloading rod assembly 3 is fixedly mounted on the lower part of the main engine drive reduction box 2, and is used to drive the drill pipe, cutter head rotation and drill pipe loading and unloading operations; there are two thrust cylinders 4. When the machine is erected, the two thrust cylinders 4 are vertically arranged opposite to each other, and the main engine drive reduction box 2 is fixedly mounted on the two thrust cylinders 4 and can move synchronously with the thrust and lifting actions of the thrust cylinders 4; the main engine drive reduction box 2 includes two low-speed, high-torque hydraulic motors, two small gears and a large gear. The output ends of the two motors are respectively fixedly connected to a small gear. A large gear is rotatably provided at the center position of the main engine drive reduction box 2, and the large gear is engaged with the two small gears on both sides of it. The large gear is fixedly connected to the drive head, and is used to provide the high torque and speed output required for drilling and reaming of the drilling rig.

[0030] In this embodiment, the main engine drives the reduction gearbox 2 with a freewheel function, which can switch the two hydraulic motors to the synchronous mode or the follow-up mode. In the synchronous mode, the hydraulic oil is evenly supplied to the two hydraulic motors, and the two hydraulic motors rotate and output at the same time, so as to realize the high torque output of the main engine driven reduction gearbox and ensure the large torque required for the cutter head to expand the hole; when switched to the follow-up mode, the hydraulic oil is mainly supplied to a single hydraulic motor, and the other hydraulic motor follows the rotation, so as to realize the high speed output of the main engine driven reduction gearbox and accelerate the drilling speed.

[0031] The bottom of the propulsion cylinder 4 is fixedly mounted on the main engine base 6, and is used to provide the propulsion force and propulsion stroke required for drilling, and the lifting force and lifting stroke required for reaming. The two propulsion cylinders 4 are fixedly connected by a crossbeam 8 to enhance the firmness and stability of the connection through the crossbeam 8; there are two guide columns 5, and the two guide columns 5 are vertically opposite to each other, and the guide column 5 is located on one side of the propulsion cylinder 4. The bottom of the guide column 5 is fixedly mounted on the main engine base 6, and the upper ends of the two guide columns are fixedly connected by a connecting plate 9. The main engine drive reduction box 2 is fixedly connected to the sliding guide sleeve 10, and the main engine drive reduction box 2 is slidably mounted on the guide column 5 through the sliding guide sleeve 10. The guide column 5 and the propulsion cylinder 4 jointly play a guiding role in propulsion and lifting.

[0032] A hinge mechanism is fixedly provided on one side of the main frame base 6, which is used to be hinged to the crawler chassis assembly 13 and the pitch cylinder 17 respectively to form a triangular hinge structure. The pitch cylinder 17 can be extended and retracted to operate the main frame assembly 1 to stand up and retract the machine; the bottom of the main frame base 6 is also connected to two shoe plates 11 with adjustable angles. The two shoe plates 11 are arranged opposite to each other, and one end of the shoe plate 11 is hinged to the main frame base 6, and the other end of the shoe plate 11 is connected to the main frame base 6 through an angle adjustment mechanism 12 for adjusting the inclination angle between the shoe plate 11 and the main frame base 6. In this embodiment, the angle adjustment mechanism 12 is a double-headed left-hand and right-hand screw structure. A number of bolt holes are provided on the shoe plate 11 along its length. When working, the shoe plate 11 can be locked and fixed to the ground by bolts to ensure the stability of the drilling rig when it is working.

[0033] like Figure 1 As shown, a hydraulic manipulator 33 is fixedly installed on one side of the main machine base 6. It has the functions of grabbing, lifting, lowering, and rotating the drill rod. It can replace manual operation, grab the drill rod from the drill rod storage position and accurately send it to the main machine drive head position of the well drilling rig, or accurately take the drill rod out from the main machine drive head position and put it back to the drill rod storage position. The clamping cylinder of the hydraulic manipulator 33 is equipped with a hydraulic lock and an accumulator to ensure stable and reliable grasping of the drill rod and prevent it from falling.

[0034] like Figure 2 As shown, the crawler chassis assembly 13 includes a walking crawler 14, a chassis frame 15 and a leg assembly. The walking crawler 14 can be detachably mounted on both sides of the chassis frame 15. The leg assembly is fixedly mounted at the corners at both ends of the chassis frame 15. The chassis frame 1 is composed of a chassis body and a crawler fixing seat 18. The chassis body is in an I-shape as a whole. There is a mounting hole at each end corner of the chassis body. A leg 16 is installed in each mounting hole. The crawler fixing seat 18 is fixedly set on the side walls of the chassis body vertical beam for walking. For the installation of the crawler track 14, the crawler track fixing seat 18 is an inverted L-shaped structure, which contains a perpendicular horizontal plane and a vertical plane. The horizontal plane is located above the vertical plane. A number of bolt holes are opened on the horizontal plane and the vertical plane, which are connected to the walking crawler track 14 by bolt connection. The connection with the walking crawler track 14 through two perpendicular connecting surfaces increases the contact area and the connection points, effectively improving the connection stability and firmness between the walking crawler track 14 and the chassis body. The walking crawler track 14 includes a walking hydraulic motor.

[0035] Since the chassis body is in an I-shape, when the walking tracks 14 are installed on both sides of the chassis body, the width of the chassis body can be maintained without increasing the overall dimensions (width), thereby ensuring that the overall width of the shaft drill meets the requirements for traveling in underground mine tunnels.

[0036] The leg assembly includes four legs 16. There are four mounting holes at the corners of both ends of the chassis body. A leg 16 is installed in each mounting hole. The legs 16 are vertically arranged to support the chassis frame 15 as a whole. The legs 16 are structures such as hydraulic jacks and hydraulic cylinders. The four legs can adjust the telescopic length of each leg 16 individually, or any two legs 16 can be combined to adjust the telescopic length together. When working, the legs 16 are supported on the working plane. By adjusting the telescopic length of the specified leg 16, the overall height of the chassis frame 15 is lifted and its levelness is adjusted, thereby lifting the overall height of the drilling rig and adjusting the levelness of the drilling rig, and maintaining the balance and stability of the drilling rig when it is working.

[0037] like Figure 3 As shown, a mainframe base hinge seat 7 is fixedly provided at one end of the chassis body for hinge connection with the hinge mechanism on the mainframe base 6. A groove is provided on the upper surface of the vertical beam of the chassis body. The groove is close to the working end of the chassis body (i.e., the end for installing the mainframe assembly 1; the other end of the chassis body is the control end for installing the powertrain 21). A pitch cylinder hinge seat 19 is fixed on the side wall or bottom plate of the groove by welding or the like. The setting of the groove makes the pitch cylinder hinge seat 19 sink downward, and the pitch cylinder hinge seat 19 is lower than the chassis body. The upper surface of the base frame is used to connect the pitch cylinder 17, which is used to connect to the hinge mechanism on the main frame base 6. The arrangement of the pitch cylinder hinge seat 19 reduces the space occupied by the pitch cylinder 17 on the upper surface of the chassis body, so as to reduce the height of the main frame assembly 1 when the machine is folded. While ensuring that the overall height of the shaft drilling rig meets the requirements of walking in underground mine tunnels, it can also adaptably increase the specifications of the main frame assembly 1 (excavation diameter of more than 3 meters) to improve its walking ability, eliminating the need for repeated disassembly, transportation, and reassembly, thereby reducing costs.

[0038] Several groups of oblique support hinge seats are welded and fixed to the chassis body. The groups of oblique support hinge seats are spaced apart along the length direction of the chassis body. The oblique support hinge seats are located on the side of the pitch cylinder hinge seat 19 away from the main machine assembly 1. In this embodiment, two groups are provided, and each group contains two oppositely arranged oblique support hinge seats for connection with the oblique support beam 20. The oblique support beam 20 is a telescopically adjustable oblique-pull structure. The oblique support beam 20 is used to connect with the connecting plate 9 on the main machine assembly 1 to support the main machine assembly 1 when oblique hole excavation is carried out, thereby ensuring the stability of the main machine assembly 1 and realizing multi-angle adjustment of the inclination of the main machine assembly.

[0039] The oblique support beam 20 is detachably connected to the chassis frame 15. When oblique drilling is not required, the oblique support beam 20 is not installed to avoid affecting the main machine assembly 1. When oblique drilling is required, the oblique support beam 20 is installed to meet the requirements of large angle adjustment of the main machine assembly 1. When small angle adjustment is required, it is only necessary to adjust the length of the oblique support beam 20 itself. The angle adjustment range is wider and the applicability is stronger. By setting the oblique support beam 20, the rigidity and stability of the main machine assembly 1 are improved, and drilling deviation is prevented.

[0040] like Figure 1 and Figure 2 As shown, the powertrain 21 includes a powertrain chassis 22, a fuel engine hydraulic pump group 23, an electric motor hydraulic pump group 24, a hydraulic control valve group 25, a hydraulic oil heat exchanger 26, a main hydraulic oil tank 27, an auxiliary hydraulic oil tank 28, a fuel tank 29, an electric control cabinet group 30, a power supply cabinet group 31 and a casing 32. The end of the chassis frame 15 away from the main assembly 1 is provided with a horizontal connecting surface and a vertical connecting surface, and a plurality of bolt holes are provided on the horizontal connecting surface and the vertical connecting surface of the end of the chassis frame 15. The powertrain chassis 22 is fixedly connected to the horizontal connecting surface and the vertical connecting surface of the end of the chassis frame 15 by bolt connection to form a whole. The fuel engine hydraulic pump group 23 is installed and fixed on the powertrain chassis 22, mainly used to The traveling hydraulic motor on the traveling track 14 provides traveling hydraulic power, and can also be switched to provide hydraulic power to the hydraulic components of the main machine assembly 1 and other hydraulic components through a hydraulic control valve; the electric motor hydraulic pump group 24 is mounted and fixed on the powertrain chassis 22, and is mainly used to provide hydraulic power to the hydraulic components of the main machine assembly 1, and can also be switched to provide hydraulic power to the hydraulic components in the traveling track 14 and other hydraulic components through a hydraulic control valve; the hydraulic control valve group 25 is mounted and fixed on the powertrain chassis 22, and is mainly used to control and adjust the hydraulic system and hydraulic components. In other embodiments, the hydraulic control valve group 25 can use a hydraulically controlled operating valve with a handle, and the hydraulically controlled valve group can be manually operated when the electronic control does not respond.

[0041] The hydraulic oil heat exchanger 26 is fixedly mounted on the powertrain chassis 22, and is mainly used to maintain a safe low temperature of the hydraulic oil through heat exchange. A water-cooled heat exchanger is preferably used. The main hydraulic oil tank 27 is embedded and fixed inside the powertrain chassis 22, and is used to provide hydraulic oil for the drilling rig storage and cool the hydraulic oil. The auxiliary hydraulic oil tank 28 is fixed above the power unit chassis 22 and is higher than the position of the fuel engine hydraulic pump group 23 and the electric motor hydraulic pump group 24. The auxiliary hydraulic oil tank 28 is connected to the main hydraulic oil tank 27 and is used for oil return, filtering, exhaust, regulating liquid level fluctuations, cooling hydraulic oil, and preventing the hydraulic pump from sucking air. The fuel tank 29 is embedded and fixed inside the powertrain chassis 22 to provide fuel to the fuel engine.

[0042] The electric control cabinet group 30 is fixedly installed on the powertrain chassis 22 and is used to integrate and install low-voltage electric control components to provide electric control functions for the drilling rig; the electric control cabinet group 30 contains a wireless transceiver, which can be used to send and receive signals from the wireless remote control to remotely control the various actions of the drilling rig; the power supply cabinet group 31 is used to integrate and install high-voltage power supply components to provide working power for the drilling rig; the outer shell 32 is detachably installed around and above the powertrain chassis 22, adopting a modular and detachable design to protect the various components of the powertrain 21.

[0043] It is understandable that the pitch cylinder 17, the support legs 16 and other cylinder structures in this embodiment can all be installed with hydraulic balancing valves to achieve smooth cylinder movement.

[0044] like Figure 1 As shown, a hydraulic lifting unit 34 is fixedly installed at one end of the chassis frame 15 away from the main assembly 1. The hydraulic lifting unit 34 is fixedly installed on the powertrain chassis 22 and is used to assist in carrying and lifting drill bits, drill rods, stabilizer bars, tools, consumables, auxiliary equipment, etc., to reduce the labor burden. The hydraulic lifting unit 34 is an existing hydraulic crane structure. The hydraulic lifting unit 34 is fixedly installed at the tail of the chassis frame 15, specifically at the rear position of the powertrain chassis 22.

[0045] The above description of the disclosed embodiments will enable one skilled in the art to implement or use the present invention. Various modifications to these embodiments will be readily apparent to one skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the present invention. Therefore, the present invention is not limited to the embodiments shown herein but is intended to conform to the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A self-propelled large-diameter raise boring rig comprising: A crawler chassis assembly (13) is characterized in that the crawler chassis assembly (13) includes a chassis frame (15), leg assemblies are installed at the corners of both ends of the chassis frame (15), one end of the chassis frame (15) is hinged to the main machine assembly (1), and the other end is fixedly installed with a power assembly (21), a groove is provided on the upper surface of the chassis frame (15), a pitch cylinder articulated seat (19) is fixed on the side wall or bottom plate of the groove, the pitch cylinder articulated seat (19) is lower than the upper surface of the chassis frame (15), the pitch cylinder articulated seat (19) is connected to the main machine assembly (1) through the pitch cylinder (17), a plurality of groups of oblique support articulated seats are fixed on the upper surface of the chassis frame (15), and an oblique support beam (20) is detachably connected between the oblique support articulated seat and the top of the main machine assembly (1).

2. The self-propelled large-diameter raise boring rig according to claim 1, characterized in that: The main engine assembly (1) includes a main engine drive reduction box (2) fixedly arranged on the propulsion cylinder (4), a drive head and an upper and lower rod assembly (3) are installed at the lower part of the main engine drive reduction box (2), the propulsion cylinder (4) is vertically arranged, and the bottom of the propulsion cylinder (4) is fixedly connected to the main engine base (6). When the machine is erected, the main engine base (6) forms a triangular hinge structure with the chassis frame (15) and the pitch cylinder (17), and the main engine drive reduction box (2) is also slidably sleeved on the guide column (5) through a sliding guide sleeve (10).

3. The self-propelled large-diameter raise boring rig according to claim 2, characterized in that: There are two pitch cylinders (17) and two guide columns (5), the two propulsion cylinders (4) are fixedly connected via a crossbeam (8), the upper ends of the two guide columns (5) are fixedly connected via a connecting plate (9), and the connecting plate (9) is detachably connected to the oblique support beam (20).

4. The self-propelled large-diameter raise boring rig according to claim 2, characterized in that: The main engine driving reduction box (2) includes two hydraulic motors, and the output ends of the two motors are respectively fixedly connected to a small gear. A large gear is rotatably provided at the center position of the main engine driving reduction box (2), and the large gear is engaged with two small gears on both sides thereof. The large gear is fixedly connected to the driving head, and the two hydraulic motors are driven simultaneously or individually.

5. The self-propelled large-diameter raise boring rig according to claim 2, characterized in that: The bottom of the main engine base (6) is connected to two oppositely arranged shoe plates (11), one end of the shoe plate (11) is hinged to the main engine base (6), and the other end of the shoe plate (11) is connected to the main engine base (6) through an angle adjustment mechanism (12), and a plurality of bolt holes are provided on the shoe plate (11) at intervals along its length direction.

6. The self-propelled large-diameter raise boring rig according to claim 1, characterized in that: An inverted L-shaped crawler mounting seat (18) is fixed on both side walls of the chassis frame (15), and a plurality of bolt holes are provided on the horizontal and vertical surfaces of the crawler mounting seat (18), and the crawler mounting seat (18) is connected to the walking crawler (14).

7. The self-propelled large-diameter raise boring rig according to claim 1, characterized in that: The oblique support beam (20) is a telescopically adjustable inclined structure.

8. The self-propelled large-diameter raise boring rig according to claim 1, characterized in that: The powertrain (21) includes a powertrain chassis (22), a housing (32) is detachably mounted on the powertrain chassis (22), a fuel engine hydraulic pump group (23), an electric motor hydraulic pump group (24), a hydraulic control valve group (25), a hydraulic oil heat exchanger (26), an auxiliary hydraulic oil tank (28), an electric control cabinet group (30) and a power supply cabinet group (31) are fixedly mounted on the powertrain chassis (22), a main hydraulic oil tank (27) and a fuel tank (29) are embedded in the powertrain chassis (22), and the main hydraulic oil tank (27) is connected to the auxiliary hydraulic oil tank (28).

9. The self-propelled large-diameter raise boring rig according to claim 8, characterized in that: The auxiliary hydraulic oil tank (28) is higher than the fuel engine hydraulic pump group (23) and the electric motor hydraulic pump group (24).

10. The self-propelled large-diameter raise boring rig according to claim 1, characterized in that: A hydraulic lifting unit (34) is fixedly mounted on one end of the chassis frame (15) away from the main machine assembly (1), and a hydraulic manipulator (33) is fixedly mounted on one side of the main machine assembly (1). The hydraulic manipulator (33) can be interchangeably mounted on both sides of the main machine assembly (1).

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